JP2001053519A - Antenna fixing device for radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the antenna fixing device of radio equipment, capable of easily fixing an antenna. SOLUTION: This antenna 29 is inserted from an open part 27 formed in a U shape at an antenna insertion part 26, inserted to projections 12 for holding parallel bend parts 11 with positioning projections 13 for performing the positioning of a bracket vertical direction as guides and fixed by the elasticity. Then, it is fixed by soldering at the open part 27. Thus, the antenna 29 is fixed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna fixing device for a wireless device such as a wireless device for automatic meter reading in a wireless automatic meter reading system.

[0002]

2. Description of the Related Art A conventional wireless device for automatic meter reading is shown in FIGS. FIG. 9 is a front view showing a state where the wireless device is attached to the gas meter, and FIG. 10 is a side view thereof. FIG. 11 is a view showing a wireless device, and FIG.
FIG. 2B is a side view thereof. FIG. 12 is an exploded perspective view showing an antenna fixing device of the wireless device, and FIG. 13 is a perspective view showing an assembled state thereof.

[0003] As shown in FIGS. 9 and 10, the wireless device for automatic meter reading has a wireless device 1 on the front of a gas meter 100.
01 is arranged.

[0004] As shown in FIGS. 11 to 13, a radio device 101 has a built-in linear antenna 1 and a gas meter 100.
Is fixed to the terminal block 2 and the wiring board 3 which are connected to the terminal board 2. A linear power supply line 4 is fixed to the antenna 1 by soldering, and is housed and fixed in a case 5.
A cover 6 is attached and fixed from the lower part of the front surface.

[0005] The antenna 1 is formed in a U shape, and one end thereof is further bent in an R shape to form an end 1a. With respect to the wiring board 3, two posts 7 are fixed to the wiring board 3 with post mounting screws 8 and the like, and a slot 7a is formed on the opposite side, and the insertion portion 1b of the antenna 1 is inserted into the slot 7a. 1c is inserted and fixed with an adhesive or the like.

The end 1a of the antenna 1 is inserted into the insertion hole 3a of the wiring board 3, and is fixed by soldering.
The other end of the power supply wire 4 having one end inserted into the substrate insertion hole 3b and fixed by soldering is fixed to the R-shaped portion of the antenna 1 by soldering at the soldering portion 9.

[0007] The antenna 1 receives power supply from the power supply line 4 and wirelessly communicates data such as meter reading data to a separate parent device.

[0008]

In order to mount and fix the antenna 1, in order for the insertion portions 1b and 1c of the antenna 1 bent in a U-shape to fit into the slit 7a of the post 7, The slot 7a of the post 7 needs to be parallel in accordance with the shape of the antenna 1, and the rotational positioning adjustment of the post 7 requires a lot of trouble.

Further, in order to fix the antenna 1, it was necessary to fix the slit 7a of the post 7 with an adhesive or the like.

Further, the power supply wire 4 is
When soldering to the R-shaped portion of the antenna, positioning and holding were necessary, and workability was very poor.

The present invention has been made in view of such a conventional point, and does not require adjustment of the rotation direction of the post. Further, the present invention provides a power supply wire mounting structure which requires positioning and holding as described above. Another object of the present invention is to provide an antenna fixing device for a wireless device in which an antenna can be easily fixed.

[0012]

According to the present invention, there is provided an antenna fixing device for a wireless device, wherein a bracket for fixing an antenna is mounted on a wiring board, and a support fitting serving both as a power supply portion of the antenna and an end of the antenna is mounted on the wiring board. The antenna is inserted into the antenna insertion portion of the support bracket and can be fixed by soldering.

With this configuration, the antenna can be easily fixed to the bracket, and if the antenna and the antenna insertion portion are soldered, the fixing of the antenna can be completed.

Here, the support fitting is bent into an L-shape, and the width of the board insertion portion for attaching to the wiring board in the support fitting is changed stepwise to form an end of a stepped portion. The supporting bracket can be fixed to the wiring board by inserting the end of the attached portion into the mounting hole of the wiring board and then twisting.

By thus bending the support fitting into an L-shape, the support fitting can be stably mounted on the wiring board without falling when it is mounted on the wiring board, and by twisting the end of the stepped portion. The support fitting can be easily fixed to the wiring board.

Further, the antenna insertion portion of the support bracket may have an elongated hole into which the antenna is inserted, and may be inclined.

With such a configuration, the reliability of the soldering of the antenna can be improved.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the following drawings, the same symbols indicate the same or corresponding parts.

(First Embodiment) First, an antenna fixing device of a wireless device according to a first embodiment of the present invention will be described.

FIGS. 1 to 3 show the configuration of the first embodiment. FIG. 1A is a front view of a wireless device according to this embodiment, and FIG. 1B is a side view thereof. FIG. 2 is an exploded perspective view showing an antenna fixing device of the wireless device in this embodiment, and FIG. 3 is a perspective view showing an assembled state thereof.

As shown in these figures, in this embodiment, the wireless device is disposed, for example, as a wireless device for automatic meter reading on the front surface of the gas meter, and includes a wiring board 28, a bracket 10 for fixing an antenna 29, and an antenna support. A metal fitting 21, a case 5 that covers these, a terminal block 2,
It is composed of a cover 6 and the like, so that the antenna can be easily attached with one touch.

That is, the antenna 29 is attached to the bracket 10.
1 for holding the antenna parallel bent portion 11
2 and a positioning projection 13 for positioning in the vertical direction. The protrusion 12 is provided with a groove into which the antenna parallel bent portion 11 is fitted, and the positioning protrusion 13 is provided with a groove for positioning the antenna 29.

Further, the wiring board 2 is mounted on the bracket 10.
8 so that it can be inserted into the insertion holes 14 and 15 and fixed.
Plate-shaped left and right mounting portions 19 and 20 having mounting feet 17 and 18 having hook portions 16 are integrally formed with the projections, that is, the projections 12, the positioning projections 13, and the like.

The antenna support metal fitting 21 which also serves as a power supply portion and an antenna end includes a power supply terminal 22 and an antenna end 2.
3, the insertion holes 24, 2 and 2 of the wiring board 28 are provided in the board insertion portion at the tip of the power supply terminal portion 22 and the antenna end portion 23.
5 are formed, respectively. The antenna insertion part 26 bent at a right angle from the power supply terminal part 22 has an open part 27 processed into a U-shape, and the antenna can be inserted from the open part 27.
The antenna support 21 is fixed to the wiring board 28 by soldering.

The antenna 29 has an antenna parallel bent portion 11 formed into a U-shape, and one end is bent into a crank shape.

Next, the operation of the embodiment configured as described above will be described.

With respect to the insertion holes 14 and 15 of the wiring board 28,
The mounting feet 17, 18 of the bracket 10 are inserted, and the plate-shaped left and right mounting portions 19, 20 are elastically fixed.

On the other hand, the antenna support metal fittings 21 which also serve as the power supply section and the antenna end are provided with the insertion holes 24 and 25 of the wiring board 28.
The convex portions 22a and 23a are inserted into the holes and fixed by soldering.

Since the antenna insertion portion 26 has an open portion 27 formed in a U-shape, the antenna 29 is inserted from the open portion 27 and the positioning protrusion 13 for positioning the bracket in the vertical direction is guided. It can be inserted into the protrusion 12 for holding the parallel bent portion 11 with one touch, and can be fixed by its elasticity.

In this state, the antenna 29 is functioning as an antenna by receiving power from the support fitting 21 which also serves as a feeding section by fixing the antenna support fitting 21 to the U-shaped open portion 27 by soldering. Will be.

As described above, according to this embodiment, the bracket 10 for positioning and fixing the antenna 29 is provided.
Can be attached to the wiring board 28 with one touch, and the workability of assembly can be improved. Further, since the positioning and fixing of the antenna 29 can be performed by inserting the antenna 29 into the bracket 10 with one touch, the assembling workability can be improved.

(Second Embodiment) Next, a second embodiment of the present invention will be described.

The antenna support 21 having the above configuration
In this case, when soldering to the wiring board 28, it was necessary to hold it by hand to prevent it from falling down.

Therefore, in the second embodiment, the antenna support bracket 21 is connected to the power supply terminal 22 such that the power supply terminal 22 is perpendicular to the antenna end 23, that is, in the same direction as the antenna insertion portion 26. Part 22 and antenna insertion part 26
Between the power supply terminal 22 and the antenna end 2
3 is bent in an L-shape.

By bending the power supply terminal portion 22 at a right angle to the antenna end portion 23, that is, in the same direction as the antenna insertion portion 26, it is possible to prevent the power supply terminal portion 22 from falling down when mounted on the wiring board 28. Therefore, the stability at the time of mounting on the board is increased, and fixing by soldering can be performed without holding by hand, so that the workability of soldering is greatly improved.

(Third Embodiment) Next, a third embodiment of the present invention will be described.

In this embodiment, the width of the board insertion portion for attaching the power supply terminal portion 22 and the antenna end portion 23 of the antenna support bracket 21 to the wiring board 28 in the antenna support bracket 21 is changed stepwise so that the end of the stepped portion can be formed. It was done.

That is, the width of the board insertion portion for attaching the power supply terminal portion 22 and the antenna end portion 23 to the wiring board 28 is once narrowed in the middle and then widened at the front end, so that the end portion of the stepped portion is formed. It is what it was.

FIGS. 4, 5, and 6 show examples in which the board insertion portion of the antenna support is changed stepwise to form a stepped end.

With such a shape, the wiring board 2
8, the antenna support bracket 33 can be temporarily fixed to the wiring board 28 by, for example, twisting the end 34 of the antenna support bracket 33 shown in FIGS. Is also possible.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described.

FIG. 4 is an exploded perspective view showing an antenna fixing device of the wireless device according to this embodiment, and FIG. 5 is a perspective view showing an assembled state thereof. FIG. 6 is an enlarged perspective view showing an antenna support which is a main part thereof. Furthermore,
7 and 8 are for explaining the operation of the fourth embodiment in comparison with the first and second embodiments.
8 shows a soldered portion of the antenna support in the first and second embodiments, and FIG. 8 shows a soldered portion of the antenna support in the fourth embodiment. 7 and 8, (a) is a perspective view thereof, and (b) is a side view thereof.

In the first and second embodiments, as shown in FIG. 7, the antenna insertion portion 26 is processed into a U-shape and soldered to the antenna 29 there. 27, the entire periphery of the antenna 29 cannot be filled with the solder 40.

Therefore, in the fourth embodiment, as shown in FIGS. 4 to 6, the antenna insertion portion 32 is inclined by about 45 ° and the insertion hole is also made to be the elongated hole 35, as shown in FIG. Therefore, the contact length between the antenna 29 and the elongated hole 35 as an insertion hole is increased, so that the solder 41 spreads over the entire insertion hole, and soldering can be performed reliably.

[0045]

As described above, according to the antenna fixing device of the wireless device of the present invention, the antenna can be easily fixed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a wireless device according to a first embodiment of the present invention, where (a) is a front view and (b) is a side view.

FIG. 2 is an exploded perspective view showing the antenna fixing device of the wireless device according to the first embodiment of the present invention.

FIG. 3 is an exemplary perspective view showing an assembled state of the antenna fixing device of the wireless device shown in FIG. 2;

FIG. 4 is an exploded perspective view showing an antenna fixing device of a wireless device according to a fourth embodiment of the present invention.

FIG. 5 is an exemplary perspective view showing an assembled state of the antenna fixing device of the wireless device shown in FIG. 4;

FIG. 6 is an enlarged perspective view showing an antenna support according to a fourth embodiment;

FIGS. 7A and 7B are views showing a soldered portion of the antenna support in the first and second embodiments, wherein FIG. 7A is a perspective view and FIG. 7B is a side view.

FIGS. 8A and 8B are views showing a soldering portion of an antenna support according to a fourth embodiment, wherein FIG. 8A is a perspective view thereof and FIG.
Is its side view.

FIG. 9 is a front view showing a state where a conventional wireless device is attached to a gas meter.

FIG. 10 is a side view of the wireless device shown in FIG. 9;

11A and 11B are views showing a conventional wireless device, wherein FIG. 11A is a front view thereof, and FIG. 11B is a side view thereof.

FIG. 12 is an exploded perspective view showing an antenna fixing device of a conventional wireless device.

13 is a perspective view showing an assembled state of the antenna fixing device of the conventional wireless device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Terminal block 5 ... Case 6 ... Cover 10 ... Bracket 11 ... Antenna parallel bending part 12 ... Projection 13 ... Positioning protrusion 14, 15 ... Insertion hole 16 ... Hook part 17, 18 ... Mounting feet 19, 20 ... Mounting part 21 ... Antenna support bracket 22 ... Feeding terminal 23 ... Antenna end 22a, 23a ... Protrusion 24,25 ... Insertion hole 26 ... Antenna insertion part 27 ... Opening part 28 ... Wiring board 29 ... Antenna 30 ... Feeding terminal Part 31: Antenna end 32: Antenna insertion part 33: Antenna support bracket 34: End 35: Slot 40, 41: Solder

Claims (3)

[Claims] A bracket for fixing an antenna is attached to a wiring board, and a support fitting serving both as a power supply section and an antenna end of the antenna is attached to the wiring board, and the antenna is inserted into an antenna insertion section of the support fitting. An antenna fixing device for a wireless device, wherein the device can be inserted and fixed by soldering. 2. The antenna fixing device for a wireless device according to claim 1, wherein said support bracket is bent into an L-shape, and a width of a board insertion portion of said support bracket for attaching to said wiring board. Is changed step by step to form a stepped end, and the support bracket can be fixed to the wiring board by inserting the stepped end into a mounting hole of the wiring board and then twisting. An antenna fixing device for a wireless device. 3. The antenna fixing device for a wireless device according to claim 1, wherein the antenna insertion portion of the support bracket has a long hole into which an antenna is inserted, and is inclined. An antenna fixing device for a wireless device.