WO2012008713A2 - Solid state relay - Google Patents

Abstract

The present invention relates to a solid state relay, and the solid state relay of the present invention comprises: a solid state relay circuit board (20) in which output power terminals (24) are formed two times more than the input power terminals (23), and two control power units (26) for supplying power to a relay circuit are formed in such a manner that an electric connection is performed to enable two output power terminals to be matched with one input power terminal, wherein said two control power units are controlled to be matched with each of the two output power terminals which are connected to the one input power terminal; an upper cover (10) which protects said circuit board;and a heat sink (30) which has TRIAC insertion holes (32) for accommodating TRIACs that are combined in a vertical direction on said relay circuit board, and has a plurality of heat radiation ribs (34, 35). The invention enables the solid state relay to be detachably attached to an electronic device in a secure and easy manner with an operation lever, by allowing: heat radiation first and second ribs (41, 42) combined with a rail (50-1), to be formed on the lower part of a heat radiation structure of a lower case (40-1); and heat radiation third and fourth ribs (43, 44), which are heat radiation ribs (41, 42) whereby said first and second ribs (41, 42) are detachably mounted on the rail (50-1) by an operation lever (60).

Description

Solid state relay

The present invention relates to a contactless relay, and more particularly, to a structure of a contactless relay for opening and closing a circuit between an external power supply and an external load by a triac switching operation.

The present invention also relates to a contactless relay detachable structure, and more particularly, to a contactless relay detachable structure in which a contactless relay can be easily and reliably detached from an electrical device.

In general, the solid state relay uses a semiconductor switching element such as TRIAC to compensate for the shortcomings of the conventional mechanical mark relay, and it has high reliability, low noise, fast response, small size, and no vibration compared to the magnet relay. It has excellent features.

1 is a schematic diagram of a structure in which an input power terminal and an output power terminal are 1: 1 as an example of a conventional solid-state relay circuit diagram.

Referring to Fig. 1, control power supply units for single and three phases are shown for DC and AC, respectively. When an AC signal is input, a DC conversion circuit is provided to apply a DC voltage signal to the photocoupler.

The solid-state relay has a photo coupler 22 and a triac (TRIAC) in which the light emitting element and the light receiving element are paired. The light emitting device is driven by a DC voltage, and the light receiving device is electrically insulated so as to output an electrical electric signal in association with the ON state of the light emitting device.

In the single phase, the output power terminals T correspond to the input power terminals L, and in the three phases, the output power terminals U, V, and W correspond to the input power terminals R, S, and T, respectively. That is, R corresponds to U, S corresponds to V, and T corresponds to W.

In order to install a number of contactless relays in a narrow place, it is necessary to use a plurality of contactless relays, which is limited in space. It was not difficult to install a contactless relay on a terminal rail.

In addition, the disadvantage that the efficacy of the contactless relay is degraded due to the heat generated in the triac also had in the conventional contactless relay.

In general, solid state relays use semiconductor switching elements such as TRIACs (TRIACs) to compensate for the shortcomings of conventional mechanical magnet relays.They are more reliable, lower noise, faster response, smaller and vibration free than magnet relays. It has excellent features such as.

     Triac is a bi-directional device in which PNPN thyristors are connected in parallel and in parallel. The operation mode is different depending on the applied voltage, and the triac is designed and manufactured to have uniform characteristics in each operation mode. Cool by means.

     5 is a view for explaining a conventional contactless relay.

     As shown in Fig. 5, in the conventional solid-state relay, after the lead wire of the triac 1 is fastened to the circuit board 10 by a soldering or the like method, the lead wire is bent at 90 degrees to the triac 1. One surface of is in contact with the lower case 2. One surface that is in close contact with the triac (1) is the surface that generates the most heat, the lower case (2) formed by die casting or the like to form a flat surface in contact with one surface of the triac (1) to perform a heat sink. Specifically, the triac (1) is fixed by applying heat-dissipating powder, grease, or the like to the triac contact portion (3), and after the triac (1) and the lower case (2) are fastened with screws (4), The space 5 between the circuit board 10 and the lower case 2 in which the vice 1 is located is filled with resin such as epoxy having adhesiveness and heat resistance to form a contactless relay.

     However, in the conventional solid-state relay, the lifting phenomenon occurs in the triac contact portion 3 when the screw 4 is fastened in the manufacturing process, and the resin filled therein soaks in the triac 1 and the lower case 2. There is a problem that the heat radiation efficiency is lowered because it interferes with the adhesion.

     On the other hand, conventionally, the secondary heat dissipation structure 6 is manufactured and used separately to effectively dissipate heat conducted to the lower case 2. That is, after fixing the contactless relay by applying a heat-dissipating powder or heat-dissipating grease to the attachment surface (7) of the secondary heat dissipation structure (6), by fastening the contactless relay with a screw (9) through the fastening hole (8), In use, it emits heat generated by the triac (1). However, both the lower case 2 and the secondary heat dissipation structure 6 of the contactless relay are metal structures formed by die casting, etc., and the contact surface is inadequate due to the unevenness of the flat plate and the horizontal mismatch. There is a problem that the heat radiation efficiency is lowered.

     In addition, the conventional solid-state relay is assembled by the user and the installer (producer) due to the inflow of foreign matter to the attachment surface (7), poor fastening of the screw (4) when assembling the contactless relay and the secondary heat dissipation structure (6). There is a problem that the adhesiveness is lowered to not properly release the high temperature heat.

     In addition, the conventional solid-state relay conducts high temperature heat generated by the triac 1 to the lower case 2, and conducts heat of the lower case 2 to the secondary heat dissipation structure 6 to discharge to the outside. In this way, the higher the temperature, there is a problem in that the secondary heat dissipation structure 6 having a larger area than the lower case 2 of the contactless relay.

     As described above, the conventional solid-state relay does not have high heat dissipation efficiency in structure, and there is a problem in that the heat dissipation efficiency is not maximized, such as a complicated manufacturing process for heat dissipation and a decrease in adhesion in the manufacturing process.

     Therefore, the present applicant has filed a patent application of the contactless relay of Patent Registration No. 10-0972447 in order to solve the above problems, and the gist of the technology is that the circuit board 110 is a resistor, a diode, a triac (TRIAC, A substrate on which circuit elements such as a 111 and a triode AC switch are formed, and opens and closes a circuit between an external power supply and an external load by a triac switching operation. The triac 111 is formed to extend in the vertical direction on the lower surface of the circuit board 110. That is, unlike the conventional triac triangular (1) is bent at 90 ° to form a circuit board 10, as shown in Figure 5, the triangular triac 111 according to the first embodiment of the present invention is bent It is formed perpendicular to the circuit board 110 in a shape extending in the vertical direction. Accordingly, by maximizing the area of the triac 111 inserted into the lower case 130, the high temperature conductive heat dissipation rate generated in the triac is also maximized, so that a heat sink size smaller than the prior art can be used. It is possible to switch at a temperature higher than the ambient temperature when using a solid state relay, so that the cost of the installation area can be reduced.

     The triac 111 inserts the lead wire 112 into the triac fixing hole 113 and fixes the lead wire 112 by soldering to form the circuit board 110. In addition, unlike the conventional resin filled with epoxy and the triac 111 can not be separated, the first embodiment of the present invention does not fill the resin, the triac in the circuit board 110 by the method of removing the solder 111 can be easily removed. As described above, since the triac 111 may be detached from the circuit board 110, when the triac 111 or the circuit board 110 is damaged, only the triac 111 or only the circuit board 110 is separated and replaced. It is possible to reduce the repair cost, and solve the problem of environmental pollution caused by breaking the entire contactless relay separately from the external circuit when the triac 111 or the circuit board 110 is damaged in the related art. Therefore, the contactless relay of the present invention has an environmentally friendly structure. In addition, the replacement of the triac 111 or the circuit board 110 is further facilitated by the fastening slider 136 described later.

     The upper case 120 is made of a polymer resin material and is formed on the upper side of the circuit board 110. In addition, the upper case 120 has an input / output terminal 121 connected to the circuit board 110. An external power source or an external load is connected to the input / output terminal 121. In this way, the upper case 120 connects the circuit board 110 and the external circuit and functions as a cover for protecting the circuit board 110 from the outside.

     The lower case 130 is made of a metal material for heat dissipation, and is formed below the circuit board 110. Preferably, aluminum is extruded to form the lower case 130. The lower case 130 is fastened to the upper case 120 to accommodate the circuit board 110 and protect it from the outside.

     The lower case 130 may include a triac insertion hole 131 into which the triac 111 is inserted, and a lifting prevention tool 132 which prevents the triac 111 from being lifted within the triac insertion hole 131. By forming a plurality of heat dissipation ribs 133 extending laterally or downwardly, the heat dissipation ribs 133 are used as heat dissipation means for dissipating heat generated in the triac 111 to the outside.

     The triac insertion hole 131 is formed in a groove shape in accordance with the shape of the triac 111 so that the triac 111 extending in the vertical direction is sufficiently inserted into the upper portion of the lower case 130.

     The lifting prevention tool 132 includes a first lifting prevention plate 132a and a second lifting prevention plate 132b each of which is detached from the triac insertion hole 131. The first lifting plate 132a is in close contact with one surface of the triac 111 (also called the front surface of the triac), and the second lifting plate 132b is the other side of the triac 111 (also referred to as the rear surface of the triac) Close to Specifically, the first lifting plate 132a, the triac 111 and the second lifting plate 132b are inserted together in the triac insertion hole 131, the screw 135 is fastened through the fastening hole 134 ), The first lifting plate 132a is pressed, and the first lifting plate 132a, the triac 111, and the second lifting plate 132b are brought into close contact with each other and fixed.

     Here, the first lifting plate 132a and the second lifting plate 132b are preferably made of aluminum. Since aluminum has ductility, the first lifting plate 132a and the second lifting plate 132b are easily deformed by the pressure of the screw 135. Accordingly, the triac 111, the first lifting prevention plate 132a and the second lifting prevention plate 132b are completely adhered without lifting, the triac insertion hole 131 and the first lifting prevention plate 132a. And the second lifting plate 132b is also completely in contact without lifting. Therefore, the heat radiation efficiency by floating can be prevented from falling. In particular, the other surface of the triac 111 may be the surface where heat is most generated during the switching operation, and the thermal conductivity of the triac 111 to the lower case 130 may be improved by the second lifting plate 132b made of aluminum.

     The plurality of heat dissipation ribs 133 extends laterally or downwardly of the lower case 130. Since heat generated in the triac 111 is conducted to the lower case 130 and released to the outside, the heat dissipation area of the lower case 130 can be widened by the heat dissipation ribs 133, thereby improving heat dissipation efficiency of the contactless relay. Can be improved. In addition, the heat dissipation ribs 133 may be designed and formed to extend in a straight line shape or to extend in a curved manner, in consideration of their heat dissipation efficiency.

     In addition, the lower case 130 forms a fastening means for fastening and fixing the circuit board 110. Preferably, as shown in Figures 3 and 4, by forming the fastening slider 136 on the lower case 130, the circuit board 110 can be easily fastened to the lower case 130, such as repair and disassembly Can be easily removed if needed.

     In addition, the lower case 130 forms at least one of a fastening hole 137 or a fastening ring 138. The solid-state relay is a means for opening and closing an electrical connection between an external power source and an external load. Since the contactless relay is used in a small electric device or the like, a fastening means for mounting is required. Accordingly, in the first embodiment of the present invention, by forming at least one of the fastening hole 137 or the fastening ring 138 in the lower part of the lower case 130, the contactless relay is connected to the electrical device, that is, the external fixture. Can be tightened.

     In addition, the lower case 130 may be formed of an insulator by performing an insulating coating, thereby preventing damage such as static electricity to the triac 111 inserted into the triac insertion hole 131, and receiving the circuit board 110. It can be insulated from the outside.

Meanwhile, in the first embodiment of the present invention, three input / output terminals 121 are formed on each of the left and right sides of the upper case 120 so as to be used when the external power source is a three-phase AC power source. As a single-phase AC solid state relay, two input / output terminals 121 are formed on each of the left and right sides of the upper case 120 so that the external power source can be used as a single phase AC power source. Applicable In addition, the above contactless relays can be used when the external power source is a direct current. That is, the contactless relay of the present invention may be any contactless relay such as direct current, single phase alternating current, or three phase alternating current.

     However, all of the above-mentioned prior arts have a method of fastening a relay to an electric device by drilling a hole in the panel and processing a screw pitch step to assemble a heat sink with an electric device, that is, an external fixture by screwing, or to a panel assembly product made of a separate metal. Since the heat sink is assembled by screw or compression assembly, the manufacturing cost is expensive, and the work was complicated and difficult.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to reduce the manufacturing cost of the contactless relay by using only one contactless relay for the use of two contactless relay, the installation work of the installer To provide a contactless relay that can facilitate the.

Another object of the present invention is to provide a contactless relay for increasing the heat dissipation efficiency of the triac, easily fixing the circuit board to the heat sink, and easily and stably fixing the heat sink to the terminal block rail.

In addition, the present invention has been made to solve the above problems, it is to provide a contactless relay detachable structure that can be reliably and easily attached to a contactless relay to the electrical device using the operation lever.

In order to achieve the above object of the present invention, the present invention provides a contactless relay having a photocoupler and a triac,

The output power supply terminal 24 is formed twice as much as the input power supply terminal 23, and the control power supply unit 26 providing power to the relay circuit is formed in two, so that two output power supply terminals correspond to one input power supply terminal. A contactless relay circuit board 20 electrically connected to each other to control the two control power supply units to correspond to each of the two output power terminals connected to one input power terminal; An upper cover 10 protecting the circuit board; And a heat sink 30 having a triac insertion hole 32 for receiving a triac vertically coupled to the relay circuit board, and having a plurality of heat dissipation ribs 34 and 35.

Preferably, the triacs 31 are arranged in a row at different positions to correspond to the positions of the output power terminals, and two triac insertion holes 32 for inserting the triacs are provided.

Preferably, it includes a leaf spring 40 is inserted into the triac insertion hole 32 to closely contact the side of the triac insertion hole.

Preferably, the heat dissipation ribs are formed with a hook hole insertion groove 37 that can be inserted into the elastic hook hole 52 of the terminal block rail 50, the elastic hook hole 52 is the hook hole insertion groove ( An elastic fixing plate 38 for tightly fixing to 37 is provided.

The present invention relates to a contactless relay detachable structure, which is a contactless relay detachable structure for opening and closing a circuit between an external power supply and an external load by a switching operation of a triac (TRIAC), wherein the contactless relay is a circuit in which a triac is formed. The upper case 30-1 protecting the upper portion of the substrate 20-1, the circuit board 20-1, and installed at the lower portion of the circuit board 20-1 is coupled to the upper case 30-1. Consists of a lower case 40-1, the lower case 40-1 is a contactless relay detachable structure in which the heat dissipation structure that dissipates the heat of the triac is separated or integrally formed. The first and second ribs 41 and 42, which are heat dissipating ribs coupled to the rail 50-1, are formed in the lower part of the heat dissipating structure, The third and fourth ribs 43 and 44, which are heat dissipating ribs, are formed on the outer side of the two ribs 41 and 42, and the first and second ribs 41 and 42 are operated by the operating lever 60 to form a rail 50. It is characterized in that it is mounted detachably to -1).

As described above, the contactless relay of the present invention has the effect of using two contactless relays as one contactless relay by using two output power terminals for one input power terminal. As a result, only one contactless relay can be used where two contactless relays are required, thereby reducing the manufacturing cost of the contactless relay and improving work efficiency at the time of installation.

In addition, in the present invention, a plurality of wrinkles are formed in the heat dissipation ribs, and the triac is fixed to the side of the triac insertion hole by the leaf spring, thereby increasing the heat dissipation efficiency of the heat generated by the triac, 10) Since the fastening slide grooves for inserting the grooves are formed at both sides, the circuit board can be easily fastened to the heat sink.

In addition, the hanger insertion groove 37 and the elastic fixing plate 38 formed in the heat sink is provided, there is an advantage that the heat sink can be easily and stably fixed to the terminal block rail.

In addition, the present invention has a remarkable effect that it is possible to reliably and easily attach and detach the contactless relay to the electric machine by only one operation by one hand using the operation lever.

1 is a circuit diagram of a conventional solid state relay, in which an input power terminal and an output power terminal are 1: 1.

2 is a schematic diagram of a relay circuit having two output power terminals at one input power terminal according to a preferred embodiment of the present invention.

3 is a schematic perspective view of a contactless relay, in accordance with a preferred embodiment of the present invention.

4 is a partial cross-sectional schematic view of a contactless relay, in accordance with a preferred embodiment of the present invention.

5 is a cross-sectional view of a conventional solid-state relay

Figure 6 is an exploded perspective view of another conventional contactless relay

Figure 7 is a perspective view of the contactless relay detachable structure of the present invention

8 is a front view of a contactless relay detachable structure of the present invention

9 is a right side view of a solid state relay of the present invention.

10 is a plan view of a solid state relay of the present invention

Figure 11 is a bottom view of a solid state relay of the present invention.

12 is a state in which the solid-state relay of the present invention is mounted on a rail

Fig. 13 is an operation view in which a solid state relay of the present invention is mounted on a rail;

14 is an operation of the contact-free relay of the present invention is separated from the rail

15 is a perspective view of a solid state relay rail of the present invention

16 is a perspective view of a solid state relay operating lever of the present invention

17 is a plan view of a solid state relay operating lever of the present invention

18 is a side view of a solid state relay operating lever of the present invention

19 is an operation of the contactless relay detachable structure of a second embodiment of the present invention

20 is a view showing a projection formed on the heat sink portion of the contactless relay of the present invention

<Explanation of symbols for main parts of the drawings>

10: top cover

20: relay circuit board

21: Triac 22: Port Coupler

23: input power terminal 24: output power terminal

26: control power supply 27: alarm terminal

30: heat sink

32: triac insertion hole 34, 35: heat dissipation rib

36: Hanging hole insertion groove 37: Fixing plate insertion groove

38: elastic fixing plate 39: projection

50: terminal rail 52: elastic hook

20-1: Circuit Board 30-1: Upper Case

40-1: lower case 41, 42, 43, 44: 1st, 2, 3, 4 rib

45: rail coupling groove 46: fixing groove

50-1: Rail 51: First upper end

52-1: second upper end 60: operation lever

61: turning

70: operation lever 71: operation lever groove

80: triac

Hereinafter, with reference to the accompanying drawings, it will be described in more detail the contactless relay of the present invention.

2 is a schematic diagram of a relay circuit having two output power terminals at one input power terminal according to a preferred embodiment of the present invention. 2 is one example and is not necessarily limited thereto.

Referring to FIG. 2, the output power supply terminal 24 is formed twice as much as the input power supply terminal 23, and the control power supply unit 26 providing power to the relay circuit is formed in two, and the output power supply terminal 24 is connected to one input power terminal. Two output power terminals are electrically connected, and the two control power units are configured to correspond to each of the two output power terminals connected to one input power terminal.

The terminals of the control power supply unit are composed of (+,-, +), and two control power supply units are configured by using the-terminal in common.

Two output power terminals are electrically connected to one input power terminal. That is, in the single phase, two output power terminals T1 and T2 are electrically connected to one input power terminal L, and in the three phase, the output power terminals U1 and U2 are electrically connected to the input power terminal R. The output power terminals V1 and V2 are electrically connected to the input power terminal S, and the output power terminals W1 and W2 are electrically connected to the input power terminal T, respectively.

In the figure of FIG. 2, when the photocoupler 22 and the triac 21 are configured by the same number of output power terminals, that is, when there are two output power terminals on a single phase, the photocoupler and the triac are also output on two and three phases, respectively. The six power supply terminals constituted a circuit including six photocouplers and six triacs, but the present invention is not limited thereto. The triac 21 may be connected in parallel to connect the triac 21 to the number of input power terminals 23. You can also configure the same number. That is, a circuit can be constructed by using three triacs in one phase and three phases.

As described above, in the present invention, the number of input power terminals corresponding to the output power terminals is reduced, the material cost is reduced, the utilization of space is increased, and the contactless relay which improves the efficiency of the input power wiring connection work of the installer is provided. As a solid state relay, two phases (single phase and three phase) can be used as a contactless relay with multiple functions that can be used individually or in common.

3 is a schematic perspective view of a contactless relay, in accordance with a preferred embodiment of the present invention.

The contactless relay of the present invention basically provides a contactless relay circuit board 20, an upper cover 10 which covers and protects the circuit board, and dissipates heat generated from a triac of the circuit board and simultaneously discharges heat generated from the triac of the circuit board. A metal heat sink 30 for fixing is provided.

3 and 4, circuit components other than the triac and power terminals are omitted for simplicity. The photo coupler is mounted as shown in FIG.

As described in relation to FIG. 2, the contactless relay circuit board 20 has an output power supply terminal 24 formed twice as much as the input power supply terminal 23, and the control power supply unit 26 for supplying power to the relay circuit is provided. Two input power terminals are electrically connected to one input power terminal so as to correspond to each other, and the two control power units are configured to correspond to each of the two output power terminals connected to one input power terminal.

When the upper cover 10 covers the circuit board, a hole corresponding to the terminal is formed so that the input power terminal, the output power terminal and the control power terminal can be externally connected.

The heat sink 30 has a plurality of heat dissipation ribs 34 and 35 to dissipate heat generated from the triac 21 and serves to couple the relay to the terminal block rail 50. The heat sink is made of metal and is preferably produced by extrusion molding.

Fastening slide grooves for inserting the circuit board 10 are formed at both sides in the upper side of the heat sink, and a triac insertion hole for inserting the triac 21 formed perpendicular to the circuit board 20 in the lower portion therebetween ( 32) is formed. As shown, the triacs 21 are arranged in a row at different positions to correspond to the positions of the output power terminals, and the triac insertion holes 32 for inserting the triacs have two, but are not limited thereto. If the number of triacs 21 is the same as the number of input power terminals, one triac insertion hole 32 may be used.

Triac 21 should be in close contact with the side of the triac insertion port (32). This is to increase the heat dissipation effect. To this end, in the present invention, the leaf spring 40 is preferably inserted as shown. The leaf spring 40 is to close the triac to the side of the triac insertion port by the elastic force.

The heat dissipation plate 30 has side heat dissipation ribs 34 and lower heat dissipation ribs 35, which are for dissipating triac's heat, in order to increase heat dissipation efficiency of the heat dissipation ribs, preferably as shown in Fig. A plurality of wrinkles are formed on the surface of the ribs.

4 is a partial cross-sectional schematic view of a contactless relay according to a preferred embodiment of the present invention, where (a) is a view before fixing to the terminal block rail, (b) shows a state fixed to the terminal block rail.

Referring to FIG. 4, the triac is fixed to the side of the triac insertion hole by using the leaf spring 40, and is fixed to the terminal block rail 50 by using a lower heat dissipation rib.

The heat dissipation rib is provided with a hook hole insertion groove 37 that can be inserted into the elastic hook hole 52 of the terminal block rail 50, and the elastic hook hole 52 closely contacts the hook hole insertion groove 37. An elastic fixing plate 38 for fixing is provided.

When describing the method of fastening, in a state in which one heat dissipation rib is attached to the elastic hanger 52 on one side of the terminal block rail 50, the other heat dissipation rib portion is pushed toward the terminal block rail, and the other elastic hanger 52 on the other side. Is fixed by hooking the hook insertion groove 37. At this time, the elastic fixing plate 38 is configured to push with an elastic force so that the elastic hanger 52 inserted into the hanger inserting groove 37 does not escape. However, the present invention is not limited to the fastening method shown in the figure, and the number of elastic fixing plates may be two, or the number of hooking groove inserts may be fastened in various ways.

The present invention relates to a contactless relay detachable structure, which is a contactless relay detachable structure for opening and closing a circuit between an external power supply and an external load by a switching operation of a triac (TRIAC), wherein the contactless relay is a circuit in which a triac is formed. The upper case 30-1 protecting the upper portion of the substrate 20-1, the circuit board 20-1, and installed at the lower portion of the circuit board 20-1 is coupled to the upper case 30-1. Consists of a lower case 40-1, the lower case 40-1 is a contactless relay detachable structure in which the heat dissipation structure that dissipates the heat of the triac is separated or integrally formed. The first and second ribs 41 and 42, which are heat dissipating ribs coupled to the rail 50-1, are formed in the lower part of the heat dissipating structure, The third and fourth ribs 43 and 44, which are heat dissipating ribs, are formed on the outer side of the two ribs 41 and 42, and the first and second ribs 41 and 42 are operated by the operating lever 60 to form a rail 50. It is characterized in that it is mounted detachably to -1).

     In addition, the rail 50-1 has a channel shape in cross section, and a rail coupling groove 45 is formed in the first rib 41 so that the first upper end 51 of the rail 50-1 is formed on the rail. Removably coupled to the coupling groove 45, the second upper portion 52-1 of the rail (50-1) is detachably coupled to the second rib 42 by the operation lever 60,

The operation lever 60 is installed in the lateral direction of the heat dissipation structure of the lower case 40-1, and an operation lever passage hole is formed at a side of the fourth rib, which is a heat dissipation rib formed on the outer side of the second rib and the second rib. When the operation lever 60 moves forward in the lateral direction of the lower case 40-1 heat dissipation structure, the second end of the rail 50-1 having the front end of the operation lever 60 coupled to the lower end of the second rib 42 is provided. The lower end of the upper end portion 52-1 is supported, and when the operation lever 60 is retracted, the front end portion of the operation lever 60 is separated from the second upper end portion of the rail 50-1, and thus the rail 50-1. The lower case 40-1 is characterized in that it is separated from the heat dissipation structure.

     In addition, a serrated protrusion 61 is formed at a lower portion of the handle of the operating lever 60, and a sawtooth fixing groove 46 is formed on the upper surface of the fourth rib 44. A plurality of the projections 61 are formed so as to correspond to each other, and the protrusion 61 of the operation lever is detachably fixed to the fixing groove 46 of the fourth rib 44.

     In addition, the rail 50-1 has a channel shape in cross section, and a rail coupling groove 45 is formed in the first rib 41 so that the first upper end 51 of the rail 50-1 is coupled to the rail. Removably coupled to the groove 45, the second upper portion 52-1 of the rail (50-1) is detachably coupled to the second rib (42),

The operating lever 70 has a spiral portion formed in the body, and is installed in a side direction of the lower case 40-1 heat dissipation structure, and is operated on a side surface of the fourth rib which is a heat dissipation rib formed on the outer side of the second rib and the second rib. The lever passage hole is formed, and when the operating lever is rotated in the operating lever groove 71 and advanced along the spiral in the lateral direction of the lower case, the front end of the operating lever 70 is coupled to the lower end of the second rib 42. When the lower portion of the second upper end of the rail (50-1) is to be supported, and the operating lever 70 is rotated in the opposite direction as when moving forward from the operating lever groove 71, the operating lever 70 ) Is disengaged from the second upper end of the rail (50-1), characterized in that the rail (50-1) is separated from the lower case (40-1) heat dissipation structure.

     The present invention is described in detail by the accompanying drawings as follows. 5 is a cross-sectional view of a conventional contactless relay, FIG. 6 is an exploded perspective view of another conventional contactless relay, FIG. 7 is a perspective view of a contactless relay detachable structure of the present invention, and FIG. 8 is a front view of a contactless relay detachable structure of the present invention. 9 is a right side view of the contactless relay of the present invention, FIG. 10 is a plan view of the contactless relay of the present invention, FIG. 11 is a bottom view of the contactless relay of the present invention, and FIG. 12 is a contactless relay of the present invention mounted on a rail. 13 is an operation diagram in which the contactless relay of the present invention is mounted on a rail, FIG. 14 is an operation view in which the contactless relay of the present invention is separated from the rail, and FIG. 15 is a perspective view of the contactless relay rail of the present invention. 16 is a perspective view of a solid state relay operating lever of the present invention, FIG. 17 is a plan view of a solid state relay operating lever of the present invention, FIG. 18 is a side view of a solid state relay operating lever of the present invention, and FIG. 19 is a second embodiment of the present invention. Contact relay detachable structure operation diagram, Figure 20 Diagram a projection formed on the heat sink portion of the solid state relay of the invention.

     The present invention relates to a contactless relay detachable structure for opening and closing a circuit between an external power supply and an external load by a switching operation of a triac. The solid-state relay is installed on the circuit board 20-1 on which the triac is formed, the upper case 30-1 protecting the upper portion of the circuit board 20-1, and the lower portion of the circuit board 20-1. And consists of a lower case 40-1 coupled with the upper case 30-1. The lower case has a heat dissipation structure formed integrally with or below the lower case.

     In addition, first and second ribs 41 and 42, which are heat dissipation ribs coupled to the rail 50-1, are formed below the heat dissipation structure of the lower case 40-1. The first. Outside the two ribs 41 and 42, third and fourth ribs 43 and 44, which are heat dissipating ribs, are formed concentrically. Therefore, the first and second ribs 41 and 42 are detachably mounted to the rail 50-1 by the operation lever 60.

     The rail 50-1 has a channel shape in cross section, and a rail coupling groove 45 is formed in the first rib 41 so that a first upper end of the rail 50-1 is in the rail coupling groove 45. Removably coupled to. In addition, a second upper end of the rail 50-1 is detachably coupled to the second rib 42 by the operation lever 60. The operation lever 60 is installed in the lateral direction of the heat dissipation structure of the lower case 40-1, and an operation lever passage hole is formed at a side of the fourth rib, which is a heat dissipation rib formed on the outer side of the second rib and the second rib. When the control lever moves forward in the lateral direction of the lower case, the front end of the control lever 60 supports the lower part of the second upper end of the rail 50-1 coupled to the lower end of the second rib 42. When 60 is retracted, the leading end of the operating lever 60 is separated from the second upper end of the rail 50-1, so that the rail 50-1 is separated from the heat dissipation structure of the lower case 40-1.

     A serrated protrusion 61 is formed on the lower surface of the handle of the operating lever 60, and the serrated fixing groove 46 corresponds to the serrated protrusion 61 on the upper surface of the fourth rib 44. In this case, a plurality of protrusions 61 of the operating lever are detachably fixed to the fixing groove 46 of the fourth rib 44. Since the operation lever is made of polybutylene terephthalate, the material of the operation lever is elastic, so that it is easily detachable from the toothed projection and the fixing groove. The tip of the control lever is sharply formed so that when the control lever is moved forward or backward, the control lever leading end is easily coupled to or detached from the lower portion of the rail that is the rail.

     On the other hand, as another embodiment of the present invention, the rail 50-1 has a channel-shaped cross section, and the first rib 41 has a rail coupling groove 45 formed therein, so The upper end portion is detachably coupled to the rail coupling groove 45, and the second upper end portion of the rail 50-1 is detachably coupled to the second rib 42 by the operation lever 70. The control lever is bent in one direction so that the handle portion can be caught in the operation lever groove. When the operation lever is rotated, the handle portion is inserted into the operation lever groove to move forward or continue rotation or rotate in another direction. It is caught by the control lever groove and is separated from the control lever groove and retreats backward.

     Therefore, the manipulation lever 70 has a spiral portion formed in the body, is installed in the lateral direction of the lower case 40-1, the operation lever on the side of the fourth rib, which is a heat dissipation rib formed on the outer side of the second rib and the second rib. The through hole is formed, and when the operating lever rotates in the operating lever groove 71 to advance along the spiral in the lateral direction of the lower case heat dissipation structure, the leading end of the operating lever 70 is formed at the lower end of the second rib 42. The lower portion of the second upper end of the rail 50-1 to be coupled is supported. And when the operating lever 70 is rotated in the opposite direction as when moving forward from the operating lever groove 71 and retracted along the helix, the leading end of the operating lever 70 is separated from the second upper end of the rail 50-1. Rail 50-1 is separated from the lower case 40-1 heat dissipation structure.

     Therefore, the present invention can reliably and easily attach and detach a contactless relay to an electrical device by using the operation lever, it can effectively respond to shock and vibration.

On the other hand, the present invention can form a projection 39 in the heat sink portion in contact with the leaf spring to prevent the flow of the leaf spring.

And the leaf spring can be used by copper plating to increase the thermal conductivity.

Claims (8)

In a solid state relay with a photocoupler and a triac, The output power supply terminal 24 is formed twice as much as the input power supply terminal 23, and the control power supply unit 26 providing power to the relay circuit is formed in two, so that two output power supply terminals correspond to one input power supply terminal. A contactless relay circuit board 20 electrically connected to each other to control the two control power supply units to correspond to each of the two output power terminals connected to one input power terminal; An upper cover 10 protecting the circuit board; And a heat sink (30) having a triac insertion hole (32) for receiving triacs coupled vertically on the relay circuit board and having a plurality of heat dissipation ribs (34, 35). Contact relay. The method of claim 1, The triac 31 is arranged in a row at different positions to correspond to the position of the output power terminal, the triac insertion hole for inserting the triac 32 is characterized in that it comprises two. The method according to claim 1 or 2, And a leaf spring (40) inserted into the triac insertion hole (32) to closely contact the side of the triac insertion hole. The method according to claim 1 or 2, The heat dissipation rib is provided with a hook hole insertion groove 37 that can be inserted into the elastic hook hole 52 of the terminal block rail 50, and the elastic hook hole 52 closely contacts the hook hole insertion groove 37. Solid state relay, characterized in that the elastic fixing plate 38 is fixed. A contactless relay detachable structure for opening and closing a circuit between an external power supply and an external load by a triac switching operation, wherein the contactless relay is a circuit board 20-1 or a circuit board 20- triac formed with a triac. The upper case 30-1 to protect the upper portion of 1), and the lower case 40-1 is installed in the lower portion of the circuit board 20-1 and coupled to the upper case 30-1, The lower case 40-1 has a contactless relay detachable structure in which a heat dissipation structure for dissipating triac heat is separated or integrally formed. The lower case 40-1 has a lower portion of the heat dissipation structure with a rail 50-1. First and second ribs 41 and 42, which are combined heat dissipation ribs, are formed. The third and fourth ribs 43 and 44, which are heat dissipating ribs, are formed on the outer side of the two ribs 41 and 42, and the first and second ribs 41 and 42 are operated by the operating lever 60 to form a rail 50. -1) contactless relay detachable structure, characterized in that detachably mounted The rail 50-1 has a channel shape in cross section, and a rail coupling groove 45 is formed in the first rib 41 so that the first upper end 51 of the rail 50-1 is formed. ) Is detachably coupled to the rail coupling groove 45, and the second upper end 52-1 of the rail 50-1 is detachably attached to the second rib 42 by the operation lever 60. Combined, The operation lever 60 is installed in the lateral direction of the heat dissipation structure of the lower case 40-1, and an operation lever passage hole is formed at a side of the fourth rib, which is a heat dissipation rib formed on the outer side of the second rib and the second rib. When the operation lever 60 moves forward in the lateral direction of the lower case 40-1 heat dissipation structure, the second end of the rail 50-1 having the front end of the operation lever 60 coupled to the lower end of the second rib 42 is provided. The lower end of the upper end portion 52-1 is supported, and when the operation lever 60 is retracted, the front end portion of the operation lever 60 is separated from the second upper end portion of the rail 50-1, and thus the rail 50-1. Solid state relay detachable structure, characterized in that separated from the lower case (40-1) heat dissipation structure The toothed projection 61 is formed in the lower portion of the handle of the operating lever 60, and the serrated fixing groove 46 is formed on the upper surface of the fourth rib 44. Since a plurality of protrusions 61 are formed to correspond to the protrusions 61, the solid state relay detachable structure is characterized in that the protrusions 61 of the operation lever are detachably fixed to the fixing grooves 46 of the fourth ribs 44. The rail 50-1 has a channel-shaped cross section, and a rail coupling groove 42 is formed in the first rib 41 so that the first upper end 51 of the rail 50-1 has a channel shape. ) Is detachably coupled to the rail coupling groove 42, and the second upper end 52-1 of the rail 50-1 is detachably attached to the second rib 42 by the operation lever 70. Combined, The operating lever 70 has a spiral portion formed in the body, and is installed in a side direction of the lower case 40-1 heat dissipation structure, and is operated on a side surface of the fourth rib which is a heat dissipation rib formed on the outer side of the second rib and the second rib. The lever passage hole is formed, and when the operating lever is rotated in the operating lever groove 71 and advanced along the spiral in the lateral direction of the lower case, the front end of the operating lever 70 is coupled to the lower end of the second rib 42. When the lower portion of the second upper end of the rail (50-1) is to be supported, and the operating lever 70 is rotated in the opposite direction as when moving forward from the operating lever groove 71, the operating lever 70 ) Is detached from the second upper end of the rail (50-1), so that the rail (50-1) is separated from the lower case (40-1) heat dissipation structure

Images