KR102130324B1 - Assembly and chair with the same - Google Patents

Abstract

An assembly for a chair and a chair to which it is applied, a body coupled to an upper part of a leg of a chair, a pair of supports formed extending forward from both sides of the body and connected to a lower surface of the seat, and rear and upward from both sides of the body It is formed by bending and providing a configuration including a pair of connecting frames that are axially coupled to both side surfaces of the body and the seat, respectively, and adjusting the inclination by rotating the seat and the backrest backward by using the elastic force of the support and the connecting frame. So that it can be tilted.

Description

Assembly for chair and chair to which it is applied{ASSEMBLY AND CHAIR WITH THE SAME}

The present invention relates to an assembly for a chair and a chair to which the chair is applied, and more particularly, to an assembly for a chair for tilting the seat in the front-rear direction using the elasticity of the support for supporting the seat and a chair to which the chair is applied.

The chair is largely composed of a seat, a leg, and a backrest, and is used for a user to sit and perform various tasks. If you have to sit for a long time, it is important to choose the right chair for you. In consideration of these points, it is also equipped with a function to adjust the height of the seat plate or the angle of the backrest. Nevertheless, when sitting in a chair for a long time, the posture is fixed, so it is easy to cause pain or deformation of the body. As a more advanced function, chairs employing various methods, such as technology in which the backrest is tilted in various directions, are being developed.

For example, Patent Document 1 to Patent Document 4 below discloses a chair configuration to which a tilting technique is applied.

Patent Document 1 induces correct sitting habits including a leg frame, a frame for armrests connected to one side of the leg frame, a backrest, a frame for armrests and a backrest, and a tilting member for a frame that guides the backrest to tilt, Disclosed is a frame-type chair configuration that minimizes factors such as back pain.

In Patent Document 2, in a tilting chair having a main shaft, a back frame, and a torsion bar, a torsion adjustment block that is movably installed inside the main shaft and a stopper of the torsion adjustment block are accommodated inside, and the torsion formed in the main shaft It describes a configuration that includes an adjustment groove and improves the comfort required by various users by adjusting the torsional elastic force of the torsion bar according to the movement of the torsion adjustment block.

Patent Document 3 is provided in the tilting support frame connected to the seat plate of the chair and crossing the lower part of the seat plate, the armrest connecting the tilting support rod and the chair back plate, and the tilting support rod are provided inside, but the tilting rotation frame is connected A configuration of a torsion bar spring assembly that is tilted when the user tilts the back of the back while sitting on the chair seat is described.

Patent Document 4 includes a tilting control unit that limits the maximum tilting angle to a plurality of stages during a tilting operation to adjust the inclination of the seat and the backrest, and extends the control lever installed at the front of the body forward and rotates it to rotate to make the elastic member An assembly configuration for a chair that controls a user's tension and adjusts strength during a tilting operation of a seat and a backrest is described.

Republic of Korea Patent Registration No. 10-1412406 (announced on June 27, 2014) Republic of Korea Patent Registration No. 10-1426546 (announced on August 14, 2014) Republic of Korea Patent Registration No. 10-1960336 (announced on March 20, 2019) Republic of Korea Patent Registration No. 10-1902770 (announced on October 1, 2018)

However, Patent Documents 1 to 3 have a problem that the user cannot effectively tilt the seat plate and the backrest according to the body shape or posture, as only the backrest is tilted in the front-rear direction while the seat plate is fixed.

In addition, the assembly of the chair according to the prior art is applied with a torsion bar or spring for tilting motion of the seat plate and backrest, and additional parts such as an adjustment bolt for adjusting elastic force during the tilting motion must be applied.

Due to this, the assembly of the chair according to the prior art has a problem in that the structure is complicated, the workability is reduced during the manufacturing operation, and the manufacturing cost is increased.

An object of the present invention is to solve the problems as described above, for a chair capable of tilting operation to adjust the inclination of the seat and the backrest by using the user's weight applied to the seat and the elastic force of the assembly supporting the seat. It is to provide an assembly and a chair to which it is applied.

Another object of the present invention is to provide an assembly for a chair and a chair to which the chair is applied, which simplifies the structure of an assembly capable of tilting the seat and the backrest, minimizes the number of parts, and provides a slim design.

Another object of the present invention is to provide an assembly for a chair capable of locking a tilting motion as required and a chair to which it is applied.

In order to achieve the above object, the chair assembly according to the present invention is a body coupled to the upper part of the leg of the chair, a pair of supports formed extending forward from both sides of the body and connected to the lower surface of the seat and the The user's weight applied to the seat portion and the elastic force of the support frame and the connection frame are used, including a pair of connection frames that are bent from both sides of the body to the rear and upward and are axially coupled to both side surfaces and the seat portion of the body. It is characterized in that the tilting operation to adjust the inclination by rotating the seat portion and the backrest.

In addition, in order to achieve the object as described above, a chair to which an assembly for a chair according to the present invention is applied includes an assembly for a chair, and a pair of supports and a body supporting a seat portion in the assembly for a chair, and a backrest are connected. It characterized in that the tilting operation for adjusting the inclination of the seat portion and the backrest using the elastic force of the connection frame and the locking or releasing the tilting operation.

As described above, according to the assembly for a chair according to the present invention and a chair to which the chair is applied, the user's weight applied to the seat portion and the seat portion using the elastic force of the injection molded support and the connection frame using a material made of synthetic resin material And the effect of being able to tilt the backrest to the rear is obtained.

In addition, according to the present invention, by removing parts such as a torsion bar or spring for a tilting operation according to the prior art, it is possible to minimize the number of parts, improve workability during assembly work, and reduce the manufacturing cost.

In addition, according to the present invention, the effect that the tilting strength can be adjusted during the tilting operation of the seat and the backrest according to the weight of the user is obtained.

In addition, according to the present invention, the structure of the chair assembly is simplified, and an effect that a chair assembly of a slim design can be implemented in terms of design is obtained.

1 is a perspective view of a chair with an assembly for a chair according to a preferred embodiment of the present invention,
Figure 2 is a perspective view of the chair shown in Figure 1 from a different angle,
3 is a perspective view of an assembly for a chair according to a preferred embodiment of the present invention,
Figure 4 is an exploded perspective view of the chair assembly shown in Figure 3,
Figure 5 is a cross-sectional view of the AA' line shown in Figure 3,
Figure 6 is a plan view of the chair assembly shown in Figure 3,
7 to 9 is an operation state diagram illustrating a tilting operation of the chair is applied to the chair assembly according to an embodiment of the present invention.

Hereinafter, an assembly for a chair and a chair to which the chair is applied according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In this specification, the direction in which the backrest is installed around the seat is referred to as the'rear' of the chair, and the opposite direction is referred to as the'front' of the chair.

In addition, the tilt adjustment operation of the seat and the backrest is called a'tilting operation'.

Accordingly, terms indicating directions such as'left','right','upper' and'downward' are defined to indicate respective directions based on the front and rear.

First, a configuration of a chair to which an assembly for a chair according to a preferred embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2.

1 is a perspective view of a chair to which a chair assembly according to a preferred embodiment of the present invention is applied, and FIG. 2 is a perspective view showing the chair shown in FIG. 1 from a different angle.

2 is an exploded state of the seat.

Chair 10 is applied to the chair assembly according to a preferred embodiment of the present invention, as shown in Figures 1 and 2, the user is seated seat 11, the seat is provided under the seat and a plurality of wheels attached It is installed on the lower portion of the leg portion 12, the seat portion 11, the backrest 13 and the seat portion 11, and the height of the seat portion 11 is adjusted and the seat portion 11 and the backrest ( 13) a tilting operation to adjust the inclination of the chair and includes an assembly 14 for locking or releasing the tilting operation.

Both sides of the backrest 13 are provided with armrests 19 for supporting the user's arms, and headrests (not shown) for supporting the user's head may be mounted on the top of the backrest 13.

In this embodiment, the backrest 13 is coupled to a pair of connecting frames 40 extending rearwardly and upwardly from both sides of the chair assembly 14, and the seating portion 11 during the tilting operation of the seating portion 11 Together, they can be tilted backwards.

In addition, the armrest 19 may be formed to extend forward from the top of each extension frame 40.

A cylinder 15 that extends and contracts to adjust the height of the seat portion 11 may be installed on the upper portion of the leg portion 12.

As shown in FIG. 2, the seat portion 11 includes a seat plate 16 disposed to be tiltable on the upper portion of the assembly 14, a coupling plate 17 detachably coupled to a lower portion of the seat plate 16, and A cushion 18 covering the upper surface of the seat plate 16 and each side wall may be included.

A space is formed on the lower surface of the seat plate 16 so as to engage the coupling plate 18, and an inclined portion 161 may be formed at an edge of the lower surface of the seat plate 16 to be inclined toward the inside of the seat plate 16 (FIG. 5).

And the coupling plate 17 may be formed with a slightly larger area than the lower surface of the seat plate 16.

Here, the seat plate 16 is made of a synthetic resin material such as plastic, and the coupling plate 17 may be coupled to the lower surface of the seat plate 16 while elastically deforming the inclined portion 161 to the outside.

Therefore, the present invention can be coupled to the seat plate or detachable from the seat plate by elastically deforming the inclined portion formed on the lower edge of the seat plate, without having to provide separate bonding structures such as engaging projections and engaging grooves.

In particular, the present invention can be combined with the binding plate to the seat plate in one operation by using the elastic deformation of the inclined portion, or can easily detach the bonding plate from the seat plate.

Next, a configuration of a chair assembly according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

3 is a perspective view of an assembly for a chair according to a preferred embodiment of the present invention, FIG. 4 is an exploded perspective view of the assembly for a chair shown in FIG. 3, FIG. 5 is a cross-sectional view taken along line AA′ shown in FIG. 3, 6 is a plan view of the chair assembly shown in FIG. 3.

3 and 6 show a state in which the seating plate is coupled to the upper surface of the chair assembly, and FIG. 5 is shown in a state where the seating plate is coupled to the upper surface of the chair assembly.

Chair assembly 14 according to a preferred embodiment of the present invention, as shown in Figures 3 to 6, the body 20 coupled to the top of the cylinder 15, extending forward from both sides of the body 20 Formed and connected to the lower surface of the seat portion 11, the pair of support 30 and the body 20 are formed to be bent rearward and upward from both sides, and are axially coupled to both side surfaces of the body 20 and the seat portion 11, respectively. It includes a pair of connecting frame 40.

And the chair assembly 14 according to a preferred embodiment of the present invention is a control lever 50 and a tilting operation to adjust the height of the seat 11 by pressing the opening and closing pins provided at the top of the cylinder 15 downward. A locking part 60 to be locked may be further included.

The body 20 is formed in a hexahedron shape having a substantially rectangular cross section when viewed from the top, and a coupling cylinder 21 to which the upper end of the cylinder 15 is coupled may be provided at the center of the body 20.

The coupling cylinder portion 21 is formed in a substantially cylindrical shape, and protrudes upward and downward around the body 20, and a space may be formed at the center of the coupling cylinder portion 21 so that the upper end of the cylinder 14 can be coupled. .

The control lever 50 may be rotatably coupled to one side of the coupling cylinder 21 in the vertical direction.

The adjustment lever 50 is axially coupled to one side of the coupling cylinder 21, and can rotate in the vertical direction according to the user's operation.

Accordingly, when the user pulls the outer end of the adjustment lever 50 upward, the inner end of the adjustment lever 50 rotates downward about the shaft 51 to lower the opening/closing pin provided at the top of the cylinder 15. Pressure.

Accordingly, while the closed state of the cylinder 15 is released, the height of the seat portion 11 can be adjusted.

On the other hand, when the user cancels the pulling operation of the adjusting lever 50, as the opening/closing pin of the cylinder 15 moves upward, the inner end of the adjusting lever 50 rises, and the cylinder 15 expands and contracts. Is fixed, and the seat 11 is maintained at an adjusted height.

On the other hand, a fixed block 22 that protrudes upward through the through hole 171 formed in the coupling plate 17 may be formed on the rear upper surface of the body 20.

6, the fixed block 22 is in contact with the rear end of the rotating bar 62 of the locking portion 60 to be described below and serves to lock the tilting operation of the chair assembly 14.

And the fixing block 22, as shown in Figure 5, prevents the front rotation of the seat portion 11, the width of the front-rear direction of the through hole 171 to the rear rotatable distance during the tilting operation of the seat portion 11 It functions as limited.

When the front end of the seat portion 11 descends and rotates forward, the user's posture may become unstable as the user's weight is pushed forward.

Therefore, the rear surface of the fixing block 22 is disposed in contact with the rear end of the through-hole 171, thereby preventing the front rotation of the seat 11.

On the other hand, the fixed block 22 is separated from the rear end of the through-hole 171 when the seat portion 11 and the backrest 13 are rotated backward and tilted.

And the fixed block 22, when the seat portion 11 and the backrest 13 continuously rotates to the rear and contacts the front end of the through hole 171, the seat portion 11 and the backrest 13 are no longer rearward. It is supported to prevent rotation by limiting the rotatable distance.

The pair of support 30 may be formed to extend forward and upward from both sides of the body 20, respectively.

The body 20 and the pair of supports 30 may be integrally injection molded using a material made of synthetic resin material such as plastic so that elastic deformation is possible.

In addition, each support 30 may be provided as a curved plate having a curved surface that is convex forward with a predetermined curvature when viewed from the side.

The first shaft 31 may be coupled to the front end of each support 30 so that the front end of the coupling plate 17 of the seat 11 can be axially rotated.

The pair of connecting frames 40 may be formed to be bent toward the rear and upward so as to be approximately''' in cross section when viewed from the side.

The connection frame 40 may be injection molded using a material made of synthetic resin material such as plastic so that elastic deformation is possible.

On the front end of each connecting frame 40, upwardly convex coupling protrusions 41 are formed, and on each coupling protrusion 41, a second shaft rotatably coupling the rear end of the coupling plate 17 of the seat 11 42 can be installed.

In addition, a third shaft 43 that rotatably couples the front end portion and the body 20 of each connection frame 40 to the inner surface of the front end portion of each connection frame 40 may be installed.

Therefore, the coupling plate 17 uses the elastic force of the body 20 and the connecting frame 40 in a state where the front end and the lower end are coupled to the first shaft 31 and the second shaft 42, respectively, during the tilting operation. It can rotate backwards.

In addition, the connecting frame 40 is connected to the connecting frame 40 in a state in which the front end portion is coupled to the rear end portion and the body 20 of the coupling plate 17 by the second shaft 42 and the third shaft 43 during the tilting operation. ) Can be rotated in the front-rear direction using the elastic force.

Here, the second shaft 42 may rotate around the third shaft 42 according to a direction in which the coupling plate 17 tilts.

So, the backrest 13 coupled to the pair of connection frames 40 can rotate in the front-rear direction together with the connection frames 40.

On the other hand, the locking unit 60 is installed by the user's operation in the left and right direction to move linearly reciprocating lever 61 and the rotation lever 62 is installed to be rotatable in the left and right direction by the movement of the operation lever 61 ).

The leading end of the rotating bar 62 is connected to the inner end of the operating lever 61, and a fixing bolt 65 fixed to the upper surface of the coupling plate 17 may be fastened to the central portion of the rotating bar 62.

Here, the fixing bolt 65 functions as a hinge shaft so that the rotating bar 62 can rotate.

And the connection protrusion 63 is projected upward toward the inner surface of the inner end of the operation lever 50, and the coupling hole 64 to which the connection protrusion 63 is coupled may be formed at the front end of the rotating bar 62. .

The coupling hole 64 may be formed in a long hole shape so that the rotating bar 62 can rotate around the fixing bolt 65 in the state where the connecting protrusion 63 is coupled.

Therefore, the locking unit 60, when the user pulls the operation lever 61 to the left when viewed from the outside of the seat portion 11, as shown in Figure 5, the inner end of the operation lever 61 and the rotating end connected to the rotating bar (62) The rear end portion rotates toward the inside of the seat portion 11 around the fixing bolt 65.

As described above, when the rear end of the rotating bar 62 rotates and contacts the fixed block 22 formed on the body 20, the seating portion 11 and the backrest 13 are locked so that the tilting operation is impossible.

Next, a tilting operation method of a chair to which a chair assembly according to a preferred embodiment of the present invention is applied will be described in detail with reference to FIGS. 7 to 9.

7 to 9 are operation state diagrams illustrating a tilting operation of a chair to which a chair assembly is applied according to a preferred embodiment of the present invention.

FIG. 7 shows a normal state in which the user's weight is not applied to the seat, and FIG. 8 shows a state in which the user's weight is applied to the seat and the seat is rotated backward by a certain angle. The tilted state is shown by rotating the seat and the back toward the rear.

First, in a state in which the user is not seated on the seat portion 11 and the user's weight is not normally applied, as shown in FIG. 7, the body 20 constituting the chair assembly 14 and a pair of supports Due to the elasticity of the 30 and the connecting frame 40, the seat portion 11 is arranged in a horizontal state or in a slightly rotated state.

At this time, the connecting frame 40 is disposed to be inclined toward the front at a predetermined angle, for example, about 15° to 20° as it goes upward.

When the user is seated in the seat 11, as the user's weight is applied to the seat 11, the body 20, the support 30 and the connecting frame 40 are centered on the cylinder 15, respectively. It is elastically deformed to face the anterior downward and posterior downward.

At this time, as the fixing block 22 protruding from the upper surface of the body 20 comes into contact with the rear end of the through hole 171 of the coupling plate 17, forward rotation of the seat 11 is prevented.

On the other hand, the connecting frame 40 is rotated at a certain angle, for example, about 5° to 10°, toward the rear downward about the third axis 43 which axially couples the body 20 and the connecting frame 40, thereby Therefore, the rear end of the seat 11 can also be rotated downward by about 5° to 10°.

Along with this, the present invention can adjust the tilting strength during the tilting operation of the seat and the back according to the weight of the user applied to the seat.

On the other hand, when the user presses the rear end of the seat 11 downward or presses the backrest 13 backward, the seat 11 is downward about the third shaft 43, as shown in FIG. 9. Rotate, and the connecting frame 40 coupled with the backrest 13 also rotates toward the rear.

At this time, the support 30 is a state coupled to the front end of the seat portion 11 and the first shaft 31, so that it is elastically deformed to rotate upward.

As described above, the present invention can tilt the seat portion and the backrest in the front-rear direction using the weight of the user and the elastic force of the injection-molded body and the connection frame using a material made of synthetic resin.

Accordingly, the present invention can remove parts such as torsion bars or springs for tilting operation according to the prior art, thereby minimizing the number of parts, improving workability during assembly, and reducing manufacturing costs.

In addition, the present invention simplifies the structure of the assembly for a chair, and can realize a chair assembly of a slim design in terms of design.

Although the invention made by the present inventors has been described in detail according to the above-described embodiments, the present invention is not limited to the above-described embodiments, and it is needless to say that various modifications can be made without departing from the gist thereof.

The present invention is applied to an assembly for a chair that uses a user's weight and elasticity of the assembly itself to tilt the seat and back to the rear and a chair technology to which the chair is applied.

10: chair 11: seat
12: leg 13: back
14: chair assembly 15: cylinder
16: Seat plate 17: Combination plate
18: cushion 19: armrest
20: body 21: joint tube
22: Fixed block
30: support 31: first axis
40: connecting frame 41: engaging projection
42,43: 2nd, 3rd axis
50: adjustable lever 51: shaft
60: locking section 61: operating lever
62: rotating bar 63: connecting projection
64: coupling hole 65: fixing bolt

Claims (9)

Body coupled to the upper leg of the chair,
A pair of support formed extending forward from both sides of the body and connected to the lower surface of the seat and
It includes a pair of connecting frames that are bent from both sides of the body to the rear and upward and are axially coupled to both sides and the seat of the body,
The pair of supports are injection-molded integrally with the body using a material made of synthetic resin so as to be elastically deformable by rotation in the front-rear direction of the seat portion,
The pair of support is provided with a curved plate having a convex forward surface,
A backrest is coupled to the upper portion of the pair of connection frames,
The connection frame is injection molded using a material made of synthetic resin so that elastic deformation is possible by the weight of the used car and the rear rotation of the backrest applied to the seat when the user is seated,
Assembly for a chair characterized in that the user's weight applied to the seat portion and the elastic force of the support and the connecting frame rotate the seat portion and the backrest to adjust the inclination by adjusting the tilt. According to claim 1,
Adjustment lever to adjust the height of the seat by pressing the opening and closing pin provided on the top of the cylinder downward and
Further comprising a locking portion for locking the tilting operation of the seat and backrest,
The body is provided with a coupling cylinder to which the upper end of the cylinder is coupled,
The adjustment lever is axially coupled to one side of the coupling cylinder portion, the chair assembly characterized in that rotatably installed in the vertical direction. delete According to claim 2,
The front end of each support is rotatably coupled by the front end of the seat and the first axis,
An upper convex coupling protrusion is formed at the front end of the pair of connection frames,
The engaging protrusion has a second shaft rotatably engaging the rear end of the seat and the engaging protrusion,
The assembly for a chair, characterized in that a third shaft is rotatably coupled to the body and the engaging projection. delete According to claim 2,
A fixed block is protruded upward in the center of the body,
The fixing block protrudes upward through a through hole formed in a lower surface of the seat portion, and when a tilting operation of the seat portion, the rotatable distance of the seat portion is limited to the width in the front-rear direction of the through hole, and prevents the front portion of the seat portion from rotating. Chair assembly characterized in that the. The method of claim 6,
The locking portion is a control lever installed to be able to move in a linear reciprocation in the left and right direction of the seat portion and
It includes a rotating bar rotatably installed in the left and right direction by the movement of the operation lever,
A fixed block is protruded upward in the center of the body,
The rotating bar is rotated by a user's manipulation, and the chair assembly is characterized in that it is in contact with the fixed block to lock the tilting operation of the seat and the backrest. Claim 1, claim 2, claim 4, comprising the chair assembly according to any one of claims 6 and 7,
The pair of supports connecting the body of the chair assembly and the lower surface of the seat portion is injection-molded integrally with the body using a material made of synthetic resin so as to be elastically deformable by rotation in the front-rear direction of the seat portion, and the convex forward surface It is prepared as a curved plate having a
A pair of connecting frames, which are axially coupled to both sides of the body and the tide, respectively, is made of synthetic resin material so that it can be elastically deformed by the weight of the used car and the rear rotation of the backrest applied to the seat when the user is seated. Injection molding
A chair with an assembly for a chair characterized by locking or releasing the tilting operation and the tilting operation of adjusting the inclination of the seat and the back using the elastic force of the pair of support frames and the body, and the connection frame to which the back is connected. . The method of claim 8,
The seat portion is a seat plate disposed on the upper surface of the assembly for the chair to enable tilting operation,
The coupling plate detachably coupled to the lower portion of the seat plate and
Includes a cushion covering the upper surface of the seat plate and each side wall,
An inclined portion is formed at an edge of the lower surface of the seat plate to be inclined toward the inside of the seat plate,
The coupling plate is a chair with an assembly for a chair characterized in that it can be deformed and detached from the inclined portion by one operation while elastically deforming the inclined portion formed on the lower surface of the seat plate.

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