WO1996027217A1

WO1996027217A1 - Antenna mounting device

Info

Publication number: WO1996027217A1
Application number: PCT/JP1996/000421
Authority: WO
Inventors: Hirotsugu Imahigashi
Original assignee: Nippon Antena Kabushiki Kaisya
Priority date: 1995-02-28
Filing date: 1996-02-23
Publication date: 1996-09-06
Also published as: JP2751146B2; DE69625295T2; EP0758802A1; EP0758802B1; DE69625295D1; JPH08237014A; EP0758802A4

Abstract

An antenna mounting device for facilitating a mounting operation without a risk of falling-off nut. A washer (4) is rotatably secured to a nut (5) by caulking a ring-like rib formed on one side of the nut (5). A spacer (7) having a fit-in piece is press fitted in the washer (4) having a U-shaped cross section. Thus, the nut (5), washer (4) and spacer (7) are integrated into a nut with a washer. When this nut with a washer is set on a lower surface of a base-screw portion (3-1), the fit-in piece fits in a slit (3-4) formed in the base-screw portion (3-1), whereby the nut with a washer is prevented from falling off.

Description

Description Antenna mounting device Technical field

The present invention relates to an antenna mounting device, and is particularly suitable for application to an automobile antenna. Background art

Conventionally, an antenna mounting device as shown in FIG. 10 has been proposed as an antenna mounting device for mounting an automobile antenna.

In FIG. 10, an antenna (not shown) is mounted on the bottom plate 115, and a slit 119 is formed on a screw 118 protruding from the lower surface thereof. This bottom plate 1 15 faces the thin plate 1 17 forming the roof of the car, etc., via the buffering intermediate element 1 16, and the screw 1 18 becomes the thin plate 1 1 1 It is inserted into the formed mounting hole.

The nut 1 21 is screwed into the screw 1 18, and the disk 1 20 is rotatably fixed to the negative surface of the nut 1 2 1. This fixing is performed by a ring-shaped band 124 partially cut away. That is, a ring-shaped groove 1 14 is formed on the upper inner surface of the nut 1 21, and a first ring formed on the outer periphery of the band 124 engaged with the ring-shaped groove 1 14. The outer periphery of the through-hole formed in the disk 120 is sandwiched between the projections and the second ring-shaped projections formed on the projections, so that the nuts 122 can rotate. Disk 120 is fixed.

Also, it fits into the slit 119 formed in the axial direction of the screw Γ18 A tongue piece 122 is formed on the disk 120, and the tongue piece 122 protrudes in the circumferential direction.

Then, after the disc 120 is rotatably integrated with the nut 121, the tongue piece 122 is fitted to the slit 119 formed on the screw 118, and the nut is fitted. The bottom plate 115 is firmly fixed to the thin plate 117 by screwing the plate 121 into the screw 118. In this case, the teeth 123 formed on the upper end of the disk 120 bite into the lower surface of the thin plate 117. In addition, by fitting the tongue piece 122 into the slit 119, the disk 120 is prevented from rotating against the bottom plate 115 even when the nut 121 is rotated. ing.

Further, a notch is provided outside the position of the tongue piece 122 in the disk 120, and the feeder line connected to the antenna element passes through the hollow portion formed inside the screw 118, and It is pulled out in the direction of 橫 from the notch formed in 120.

In addition, the upper surface of the nut 12 1 is inclined so as to become lower from the inside toward the outside, and an inclination corresponding to this inclination is formed on the lower surface of the disk 120, so that the nut 12 1 Disc 120 centering on 1 is occurring.

However, since the thin and elastic band 124 between the nut 121 and the disk 120 is rotatably fixed, the centering of the disk 120 with respect to the nut 121 is not possible. It will be difficult. In order to solve this problem, the nuts 121 and the discs 120 are conventionally provided with an inclination as described above, but there is a problem that such processing increases the cost. Was.

Also, since the tongue piece 122 formed on the disk 120 is formed by punching out a press, the tongue piece 122 can be formed to have the same width as the slit 119. As a result, play occurs between the disk 120 and the slit 119, and the protrusion of the bottom plate 115 formed opposite the toothed portion 123 of the disk 120. However, there has been a problem that the position with respect to is shifted.

Furthermore, since the power supply line is cut out of the metal plate and pulled out from the cutout formed in the disk 120, there is a problem that the power supply line is easily damaged.

Furthermore, when the nut 121 is set on the bottom plate 115 so that the nut 121 is screwed into the screw 118, the tongue piece 122 is attached to the screw slit 119. Since the fitting is performed with play, there is a problem that if the user releases the nut 12 1 during the assembling operation, the nut 12 1 drops and the assembling operation becomes difficult.

In the case of (2), it is considered that the elastic band 1 2 4 is used to temporarily fix the nut 1 2 1 and the disk 1 2 0.The band 1 2 0 is considered to be a nut 1 2 1 Since the disk is fixed to the disk 120 and has elasticity toward the outside, it is difficult to perform temporary fixing that requires elasticity toward the inside.

Therefore, an object of the present invention is to provide an antenna mounting device that facilitates centering between a nut and a washer.

Another object of the present invention is to provide an antenna mounting device that does not cause backlash between the pusher and the antenna base during mounting.

Still another object of the present invention is to provide an antenna mounting device capable of pulling out a cable in a lateral direction without damaging the cable.

Still another object of the present invention is to provide an antenna mounting device in which a nut is temporarily fixed to a base screw portion during an assembling operation and does not drop. Disclosure of the invention

In order to achieve the above object, an antenna mounting device according to the present invention includes a base and a screw portion, which protrudes downward from an antenna base and has a screw formed on an outer periphery thereof and a slit formed in the axial direction thereof, A nut having a ring-shaped rib on one surface and a through hole through which the ring-shaped rib provided on the nut can be formed is formed. A washer which is shaped like a letter, and which is mounted on the washer and formed into a body, and which is formed with a fitting piece that fits into the slit provided on the base screw portion. The ring-shaped rib is inserted through the through hole formed in the washer, and the ring-shaped rib is caulked, so that the nut is rotatably fixed to the nut. The A nut with a washer integrated by attaching the spacer to the locker is set on the base screw portion such that the spacer faces the lower surface of the antenna base, and the fitting is performed. By fitting the mating piece into the slit, the integrated nut with a washer is prevented from dropping from the base / thread portion.

Further, in the antenna mounting device, an engagement groove formed in an engagement piece protruding from an outer periphery of the spreader is engaged with a notch formed in the washer, and the The souser is press-fitted and integrated.

Further, the fitting piece is formed so as to have elasticity in a forked shape, and a ridge is formed at a portion that comes into contact with the slit.

Furthermore, the upper edge of the fitting piece is lower than the upper surface of the stirrer. δ is formed.

According to the present invention, the fitting piece is fitted so as to be in close contact with the slit. A nut with a washer comprising an integrated nut, a washer, and a spacer is temporarily fixed to the slit. Is what you can do. Accordingly, the workability of screwing the nut with a washer from below into the base screw portion protruding from the lower surface of the antenna base is improved, and the play of the washer with respect to the antenna / base can be eliminated.

Further, the cable can be protected by the spacer. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a diagram showing a side view and a bottom view of an assembled antenna mounting device of the present invention, and FIG. 2 is a diagram showing a configuration of a washer in the antenna mounting device of the present invention. FIG. 3 is a diagram showing a configuration of a nut in the antenna mounting device of the present invention. FIG. 4 is a diagram showing a configuration of a soother in the antenna mounting device of the present invention. Fig. 6 is a view showing a configuration of an antenna base in the antenna mounting device of the present invention. Fig. 6 is a development view of the antenna mounting device of the present invention. Fig. 7 is a pusher in the antenna mounting device of the present invention. FIG. 8 is a top view and a side view of a nut with a washer in which a nut, a nut, and a spacer are integrated. FIG. 8 is a diagram showing a configuration of a modified example of the spacer in the antenna mounting device of the present invention. FIG. Scan Bae in antenna mounting device - a diagram showing the configuration of another modification of the The first 0 is a diagram showing a configuration of a conventional antenna mounting device. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 (a) is a side view of the assembled antenna mounting device of the present invention. It is shown in the figure, but a part of it is broken. The bottom view is shown in (b).

In FIG. 1 (a), reference numeral 1 denotes an antenna case in which an antenna element 2 is mounted and in which a duplexer, an amplifier, a multiplexer, and the like are built. The antenna element 3 that can be received is made of a die cast, etc., and a metal antenna base whose lower surface is in contact with an attached body such as a car roof, and 4 is a plurality of protrusions 3 provided on the lower surface of the antenna base 3. — 3 has a projection 4-3 at its upper end, and has a U-shaped cross section, and has a U-shaped cross section. The protruding nut screwed into the base screw part 3-1, the tip 6 is connected to the antenna element 2 and provided on the base screw part 3-1 as shown in Fig. 1 (b). Cable drawn laterally from slit 3-4 .

In addition, in FIG. 1 (b), it can be seen that the engagement pieces formed on the spacer 7 are fitted to the slits 3_4. The antenna base 3 has an elliptical bottom surface.

As described below, the nut 4 is rotatably fixed to the nut 5, and a spacer 7 is mounted in the nut 4, and the nut 5, the nut 4, and the spacer 7 are attached. Are integrated into a nut with a washer.

Also, as described above, the antenna case 1 is attached to the attached body by sandwiching the attached body between the dish 4 and the antenna base 3. In this case, the base / screw part 3-1 is inserted into a mounting hole provided in the mounted body.

Next, Fig. 2 shows the structure of the washer constituting the antenna mounting device, Fig. 3 shows the structure of the nut 5, Fig. 4 shows the structure of the spacer 7, and Fig. 4 shows the structure of the antenna base 3. Figure 5 shows. FIG. 2 (a) is a top view of the washer 4, and FIG. 2 (b) is a cross-sectional view taken along line AA. As shown in the figure, the washer 4 has a plurality of, for example, four pointed projections 43 at the upper end, and a through hole through which a ring-shaped rib formed on a nut 5 described later can be inserted on the bottom surface. A hole 414 is formed, and a cutout 411 with which the spacer 7 is engaged is formed on the side surface.

In addition, the protrusions 413 are for securing the ground to the mounting portion.

FIG. 3 (a) is a half sectional view of the nut 5, and FIG. 3 (b) is a top view of the nut. As shown in these figures, the nut 5 has a ring-shaped rib 5-1 that is inserted into the through hole 414 formed in the aforementioned washer 4 on one surface, and has a hexagonal outer periphery. A nut screw portion 5-2 screwed to the base screw portion 3-1 is formed on the inner periphery thereof.

Next, FIG. 4 (a) is a top view of the sensor 7, FIG. 4 (b) is a cross-sectional view taken along line BB, FIG. 4 (c) is a bottom view, and FIG. ) Is a cross-sectional view taken along line CC.

As shown in these figures, the spacer 7 is provided with an insertion hole through which the base and screw portion 3-1 can be inserted at the center, and a fitting piece 7-1 protrudes into the insertion hole. The fitting piece 7-1 is formed in a forked shape, and the forked portion has elasticity to resist compression. The fitting piece 7-1 is fitted to a slit 3-4 formed on the base 'screw portion 3-1. Engagement pieces 7-4 are provided so as to extend from the engagement pieces 7-1 to the opposite side and protrude from the outer periphery, and the engagement pieces 7-4 are formed with washers 4 on both sides. An engagement groove 7-2 is provided in which the edge of the cutout portion 4-1 engages. '' Furthermore, the cross section of the mating piece 7-1 to one side of the engaging piece 7-4 The cable holding groove 7-3 is formed in a semicircular shape and is inclined so as to become gradually lower toward the outer periphery.

FIG. 5 (b) is a bottom view of the antenna base 3, and FIG. 5 (a) is a cross-sectional view taken along the line DD. A base screw part 3-1 with a screw formed on the outer periphery is formed so as to protrude downward from the lower surface of the antenna base 3, and a slit 3-4 having a rectangular cross section is formed in the axial direction. It has been done. A cable insertion hole 3-2 communicating with the slit 3-4 is provided on the lower surface of the antenna base 3. Further, for example, four protrusions 3-3 are formed on the lower surface of the antenna base 3, and the protrusions 3-3 are formed at positions opposed to the protrusions 4-13 formed at the upper end of the pusher 4. Have been. Further, on the lower surface of the antenna base 3, a fixing screw insertion hole 3-5 for inserting a fixing screw for fixing the antenna case 1 to the antenna base 3 is formed.

Next, FIG. 6 is a development view in which the antenna case 1 is attached to the attachment body 8 by attaching the nut 5, the washer 4, and the spacer 7 to the base screw portion 3-1.

As shown in this figure, first, the base screw section 3-1 is inserted into the mounting hole formed in the mounting body 8, and the mounting body 8 is brought into contact with the lower surface of the base screw section 3-1. At this time, the cable 6 is pulled out laterally through the cable insertion hole 3-2 and the slit 3-4. The nut 5 is screwed into the base screw portion 3-1. At this time, the ring-shaped rib 5-1 formed in the nut 5 is inserted into the through hole 4-4 formed in the force washer 4. By being swaged, the washer 4 is made rotatable about the nut 5. Further, a nut with a washer is provided in which a spacer 7 is mounted in the washer 4 and integrated.

FIG. 7 shows a state in which the nut is provided with a “washer”. Fig. 7 (a) is a top view, and (b) is a side view.

As shown in these figures, the spacer 7 is press-fitted into a cacher 4 having a U-shaped cross section, and at this time, engagement grooves formed on both sides of the engagement pieces 7-4. The notch 411 formed in the washer 4 is inserted into the notch 7-2 so that the edge of the notch 41 is engaged. In this case, the opposed upper edge of the washer 4 may be swaged before the press-fitting, so that the press-fitted spacer 7 is hard to be detached.

When the spacer 7 side of the nut with a washer thus set is set on the lower end surface of the base screw section 3-1, the slot 3-4 of the base 'screw section 3-1 is slotted. The fitting piece 7-1 of the spacer 7 is inserted so that the fitting piece 7-1 is slightly deformed inward. Since the fitting piece 7-1 has elasticity as described above, this fitting prevents the nut with a washer from falling off from the base-screw part 3-1.

In this state, when the nut 5 is rotated and the nut 5 is screwed into the base screw portion 3-1, since the washer 4 is integrated with the spacer 7, the fitting piece 7 is formed. — Ascended by the action of 1 to ascend while maintaining the same position. When the protrusion 4-3 formed on the upper end of the washer 4 bites into the lower surface of the attached body 8, the attached body 8 is sandwiched by the antenna base 3 and the nut with the washer. The antenna case 1 including the element 2 can be attached.

Also, at this time, the projections 4 and 13 bite into the lower surface of the attached body 8 to ensure grounding, and the cable 6 is held by the cable holding grooves 7-3 so that the cable 6 is not scratched in the lateral direction. Drawn to.

Further, since the fitting pieces 7-1 are fitted so as to be in close contact with the slits 3-4, it is possible to eliminate play in the rotation direction of the pusher 4 with respect to the antenna base 3. Therefore, formed on the lower surface of antenna base 3 The protrusion 3-3 formed on the lower surface of the pusher 4 and the antenna base 3 does not fall off from the protrusion 3-3 formed on the lower surface of the antenna 4 without being dislodged from the surface of the protrusion 4-13 formed on the pusher 4. Thereby, the attached body 8 can be reliably held. If the tips of the projections 4-13 are shifted with respect to the projections 3-3, the attachment body 8 will be deformed if the attachment body 8 is a roof of an automobile formed of a thin plate. Become like

In addition, centering of the washer 4 can be performed simultaneously with high accuracy.

As described above, the antenna mounting device of the present invention temporarily fixes a nut with a hash, which is composed of the integrated nut 5, the hash 4, and the gapr 7, to the slit 3-4. Therefore, the workability of screwing the nut with a washer into the base and screw portion 3-1 protruding from the lower surface of the antenna base 3 from below can be improved.

Next, the configuration of the spacer 7 in a modified example of the antenna mounting device of the present invention is shown in FIG. In this modified example, thin ridges 7-5 are provided on both sides (particularly, the tip is preferable) of the bifurcated fitting piece 7-1. The protruding ridge 7-5 is to make the fitting piece 7-1 come into strong contact with the slit 3-4 when the fitting piece 7-1 is fitted into the slit 3-4. . Therefore, the fitting force of the fitting piece 7-1 to the slit 3-4 can be improved. As a result, the accuracy of the dimensions of the fitting piece 7-1 can be reduced.

FIG. 9 shows a configuration of a spacer 7 in still another modified example of the antenna mounting device of the present invention. In this modification, the upper end surface of the bifurcated fitting piece 7-1 is formed lower by d than the upper end face of the spacer 7 _c . The upper end face is opposite to the base screw section 3-1, and the nut with a washer is set on the base screw section 3-1. Even if the fitting piece 7-1 and the slit 3-4 are misaligned, the spacer 7 is inserted into the base ネジ screw part 3-1 by the distance d. The nut with a washer can be rotated without coming off the lower end surface of the base screw section 3-1. Therefore, the fitting piece 7-1 can be easily fitted to the slit 314.

Note that the spacer 7 is made of resin, the washer 4 is made by pressing a metal plate, and the nut 5 is made of metal.o Industrial use is possible. Sex

Since the present invention is configured as described above, the fitting piece of the spacer integrated with the washer is fitted into the slit without generating play, and the rotation of the washer is reliably prevented. And the center will not shift.

In addition, since the fitting piece is fitted so as to be in close contact with the slit and temporarily fixed, the workability when mounting the antenna can be improved. In addition, the cable is retained by the cable retaining groove, so that the cable is protected.

Claims

The scope of the claims

1. A base screw part projecting downward from the antenna base and having a screw and its axial heslit formed on the outer periphery,

A nut screwed into the base screw portion and having a ring-shaped rib on one surface;

A through-hole formed in the nut, through which the ring-shaped rib can be inserted, and having a U-shaped cross section;

A spacer which is attached to the washer and integrated therewith, and which is provided with a fitting piece which fits into the slit provided in the base screw portion;

The ring-shaped rib is inserted into the through hole formed in the washer, and the ring-shaped rib is swaged to fix the washer to the nut so as to be rotatable. A nut with a washer integrated by mounting a spacer is set on the base screw portion such that the spacer faces the lower surface of the antenna base. An antenna mounting device, wherein a fitting piece fits into the slit so that the integrated nut with a washer does not drop from the base / thread portion.

2. An engagement groove formed in an engagement piece protruding from the outer periphery of the souser is engaged with a notch formed in the washer, and the souser is press-fitted into the washer. The antenna mounting device according to claim 1, wherein the antenna mounting device is integrated.

3. The antenna mounting according to claim 1, wherein the fitting piece is formed to have a bifurcated elasticity, and a ridge is formed at a portion in contact with the slit. apparatus.

4. The upper edge of the fitting piece is formed lower than the upper surface of the spacer. The antenna mounting device according to claim 1, wherein: