JPH11312504A - Mounting structure for battery holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To position a terminal without using a fixing jig to be mounted to a battery holder, to mount and fix the battery holder in matching with it, and to easily remove and restore the battery holder. SOLUTION: An insertion channel opened toward a board 4 side, and fitting claw 14 fitted to the board 4, when a battery holder 1 is mounted are provide in the battery holder 1. Thermals 2, 3 are constituted of the first contacts 23, 33 contacting with a battery 50 elastically, crimps 21, 31 inserted from the board 4 side into the insertion hole to be fixed, and the second contacts 22, 32 pressed to lands 41, 42 which are provided in the board 4, when the battery holder is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a battery holder for holding a coin-type battery or the like used in electronic equipment.

[0002]

2. Description of the Related Art FIG. 5 shows a mounting structure of a battery holder used for an electronic device having a coin-type battery or the like, for example, a transmitter, (a) is a perspective view showing an exploded state of the mounting structure of the battery holder, and (b). Is a cross-sectional view of the battery holder with the battery installed,
(C) is a perspective view showing a plus terminal and a minus terminal.

[0003] The mounting structure of this battery holder is a structure in which a printed wiring board 4 on which a plus terminal 2 and a minus terminal 3 are mounted by soldering and a battery 50 are loaded into the battery holder 1. The battery holder 1 is provided with claws 14 having elasticity for mounting the printed wiring board 4, and ribs 1a and 1b for covering and holding the plus terminal 2 and the minus terminal 3 mounted on the printed wiring board 4, respectively. I have. Further, an opening 19 and a loading guide rib 17 for loading the battery 50, and a projection 15 and a projection 16 for preventing the battery 50 from dropping after being loaded are provided. The battery holder 1 is made of a thermoplastic resin or the like.

[0004] The positive terminal 2 is a positive electrode surface 5 of the battery 50.
1, three contacts 23 which are in contact with each other while being elastically pressed and electrically connected thereto, contacts 22 which are connected and soldered to lands 41 provided on the printed wiring board 4, and solder which is assembled to the printed wiring board 4. A mounting end 24 to be attached and fixed is provided. The positive terminal 2 is formed of a metal plate having elasticity.
Is distorted when loaded, and its elastic reaction force maintains contact with the positive electrode surface 51 of the battery 50.

The negative terminal 3 is connected and soldered to at least two contacts 33 which are in contact with and electrically connected to the negative electrode surface 52 of the battery 50 while being elastically pressed, and lands 42 provided on the printed wiring board 4. And a mounting end 34 that is assembled and fixed to the printed wiring board 4 by soldering. The negative terminal 3 is formed of an elastic metal plate. The contact 33 is distorted when the battery 50 is loaded, and the contact with the negative electrode surface 52 of the battery 50 is maintained by the elastic reaction force. You.

The printed wiring board 4 constitutes an electric circuit (not shown) on which various electronic components are mounted. The printed circuit board 4 is provided with a plus electrode land 41 and a minus electrode land 42, and has a contact 22 of the plus terminal 2 and a minus terminal 3. The contacts 32 are soldered and electrically connected and fixed. Further, a cutout 43 is provided for pressing and fitting the elastic loading claw 14 provided on the battery holder 1.
The printed wiring board 4 is formed of an epoxy resin or the like.

First, the mounting structure of the battery holder is assembled by positioning the mounting end 24 of the plus terminal 2 and the mounting end 34 of the minus terminal 3 on the printed wiring board 4 by using a jig or the like, and then assembling the plus terminal. 2 and the contact 32 of the negative terminal 3 are connected to the land 4 of the printed wiring board 4.
1 and 42, respectively. Next, the elastic loading claw 14 provided on the battery holder 1 is pressed and fitted into the cutout 43 of the printed wiring board 4, and
The mounted printed wiring board 4 is mounted on the substrate.
In this state, the battery 50 is inserted from the loading opening 19 and loaded and fixed. This battery 50 is, as shown in FIG.
The battery 50 is inserted from the loading opening 19 in the direction of the position of the minus terminal 3, and the contact 33 provided on the minus terminal 3 and the contact 23 provided on the plus terminal 2 are respectively distorted and enter the lower side of the projection 15. After being pushed in as described above, the battery 50 is pressed against the side surface A by the reaction force of the contact 33 provided on the minus terminal 3 and assembled. In this pressed state, the battery 50 is supported and supported by the projections 15 and 16 to prevent the battery 50 from falling off and the like and is fixed.

As an example of a structure different from the mounting structure of the conventional battery holder shown in FIG. 5 described above, a plus terminal 2 and a minus terminal 3 are positioned and embedded in a battery holder using a precision mold and integrally molded. There are also examples. In this structure, the battery holder 1 in which the plus terminal 2 and the minus terminal 3 are integrally molded is directly mounted on the printed wiring board 4,
Contact 22 of plus terminal 2 and contact 3 of minus terminal 3
2 are fixed to the lands 41 and 42 of the printed wiring board 4 by soldering.

[0009]

As described above, conventionally, the plus terminal 2 and the minus terminal 3 are directly positioned on the printed wiring board 4 using a jig or the like and then fixed by soldering. It was difficult to remove and the work efficiency was poor. Further, when the printed wiring board 4 is mounted on the battery holder 1, the negative terminal 3 which is generated due to the difficulty of the above-mentioned operation is used.
When the printed wiring board 4 is inserted into the battery holder 1 and pressed, the minus terminal 3 may be distorted when the printed wiring board 4 is inserted into the battery holder 1 and the battery 50 may be unstable due to misalignment between the battery and the printed wiring board 4. . Further, another structure example (plus terminal 2 and minus terminal 3) described in the section of the prior art.
Is molded integrally with the case 1).
To the printed wiring board 4 and press the battery holder 1
After the plus terminal 2 and the minus terminal 3 are soldered and fixed to the printed wiring board 4, the battery holder 1 cannot be removed alone when a failure such as a contact failure occurs. 3 had to be removed from each other, and there was a drawback that the battery holder 1 was difficult to reuse. The object of the present invention is to eliminate the above disadvantages,
By changing the shape of the battery holder 1, the battery can be more securely mounted, and the battery holder 1 can be easily removed.

[0010]

In order to achieve the above object, according to the present invention, in the mounting structure of the battery holder, the battery holder is provided with an insertion groove opened toward the substrate side, and the mounting of the battery holder. A mounting claw that sometimes engages with the substrate, the terminal is a first contact that elastically contacts the battery, a crimping device that is pressed into the insertion groove from the substrate side and fixed, and the battery. And a second contact pressed against a land provided on the substrate when the holder is mounted.

The crimping element has elasticity, and when pressed into the insertion groove, is distorted by the shape of the groove, and is held and fixed in the groove by elastic force. It is characterized by being. Further, the second contact has elasticity, and when the battery holder is mounted, the second contact is pressed against a land provided on the substrate by an elastic force and is electrically connected. It is. In addition, a land provided on the substrate,
The portion where the second contact is pressed is further soldered.

[0012]

Embodiments of the present invention will be described with reference to the drawings. 1A and 1B show an embodiment of the present invention, showing a mounting structure of a battery holder, wherein FIG. 1A is a plan view, FIG. 1B is a cross-sectional view, and FIG.
FIG. 4B is a sectional view of the plus terminal, taken along line BB in FIG. 4B, and FIG. 4D is a sectional view of the minus terminal, taken along line CC in FIG. 2 is a perspective view of the battery mounting structure in an exploded state, FIG. 3 is a cross-sectional view when the battery is mounted, and FIG. 4 is a perspective view of a plus terminal and a minus terminal. The embodiment shown in FIGS. 1 to 4 is an example in which the present invention is applied to a mounting structure of a battery holder used for a transmitter of an automobile wireless door lock.

The mounting structure of this battery holder includes a plus terminal 2 electrically connected to a plus electrode surface 51 of a battery 50 and a minus terminal 3 electrically connected to a minus electrode surface 52 of the battery 50 shown in FIG. Installed battery holder 1
And a printed wiring board 4 on which various electronic components are mounted (not shown), and a battery 50. The battery holder 1 is for pressing and inserting the elastic mounting claw 14 for loading the printed wiring board 4 and the crimping member 21 of the plus terminal 2 shown in FIG. 1 (the groove 11 is open to the printed wiring board 4 side) and FIG.
(D) Positioned groove 12 for pressing and inserting the crimping element 31 of the minus terminal 3 from the printed wiring board 4 side and fixing the groove (the groove 12 is open to the printed wiring board 4 side). , And pressing ribs 13a, 13b, 1
3c, 13d and opening 1 for loading battery 50
9, a loading guide rib 17, projections 15 and 16 for preventing the battery 50 from dropping after being loaded, and a hole 18 a for soldering the contact 22 of the plus terminal 2 to the land 41 of the printed wiring board 4. And a notch 18b for soldering the contact 32 of the negative terminal 3 to the land 42 of the printed wiring board 4.
The battery holder 1 is made of a thermoplastic resin or the like.

The positive terminal 2 is connected to a battery 50 as shown in FIG.
The three contacts 23 which are in contact with the positive electrode surface 51 while being elastically pressed and are electrically connected, and the contacts 22 which are connected and soldered to the lands 41 positioned and provided on the printed wiring board 4. , And the groove 11 of the battery holder 1
Crimping element 2 having a C-shaped cross section for pressing and inserting into the
1 is provided. This C-shaped crimp 21 is shown in FIG.
As shown in (c), the shape before the insertion is as shown by a dotted line. However, when the insertion is made by pressing into the groove 11 positioned in the battery holder 1, the grooves 11 a and 11 b are as shown by solid lines in the figure. And it is clamped and fixed by the elastic reaction force. In addition to the method of soldering and fixing the contact 22 to the printed wiring board 4, a method of pressing and distorting the contact 22 having elasticity, making the contact by the elastic reaction force, and electrically connecting the contact 22 is also possible. is there. At this time, if the contact 22 is provided with at least two divided contacts and held in contact therewith, occurrence of poor contact and the like is suppressed, and more safety is provided. The positive terminal 2 is formed of an elastic metal plate or the like.

The negative terminal 3 is, as shown in FIG.
The two contacts 33 are electrically connected to the negative electrode surface 52 while being pressed elastically, and the contact 32 is soldered to a land 42 positioned and provided on the printed wiring board 4. And a crimping element 31 having a U-shaped cross section for pressing and inserting from the printed wiring board 4 side into the groove 12 of the battery holder 1 and fixing the same.
As shown in FIG. 1D, when the U-shaped crimping element 31 is pressed and inserted into the positioned groove 12 of the battery holder 1,
Projections 13a, 13 for pressing the U-shaped crimping element 31
Since b, 13c and 13d are provided in the battery holder 1, the U-shaped crimping element 31 is distorted and held and fixed by the elastic reaction force. In addition to the method in which the contact 32 is fixed to the printed wiring board 4 by soldering, a method in which the contact 32 is pressed and distorted, brought into contact with the elastic reaction force, and electrically connected is also possible. If at least two divided contacts are provided and held in contact with the contacts 32, the occurrence of poor contact or the like is suppressed, and more safety is provided. The minus terminal 3 is formed of an elastic metal plate or the like.

As shown in FIG. 2, the printed wiring board 4 forms an electric circuit (not shown) on which various electronic components are mounted.
A positive electrode land 41 and a negative electrode land 42 are provided in a positioned manner, and a contact 22 provided on the positive terminal 2 and a contact 32 provided on the negative terminal 3 are fixed to the lands 41 and 42 by soldering. Alternatively, the contacts 22 provided on the plus terminal 2 and the contacts 32 provided on the minus terminal 3 are pressed against the lands 41 and 42 of the printed wiring board 4 at the time of press-fitting with the battery holder 1, and come into contact with the elastic reaction force. Electrical connection. Also, a notch 4 for pressing and fitting the mounting claw 14 provided on the battery holder 1.
3 are provided. And this printed wiring board 4
Is formed of an epoxy resin or the like.

In assembling the mounting structure of the present battery holder, first, the crimping member 21 of the plus terminal 2 and the crimping member 31 of the minus terminal 3 are inserted into the groove 11 and the groove 12 of the battery holder 1 positioned.
Is pressed from the printed wiring board 4 side, and each crimping element is distorted, and the plus terminal 2 and the minus terminal 3
Hold and fix. Next, the battery holder 1 in the fixed state is pressed against the printed wiring board 4, and the mounting claws 14 are fitted into the cutouts 43 and pressed and mounted. In this press-fit state, the contact 22 of the plus terminal 2 is already aligned with the land 41 of the printed wiring board 4 and the contact 32 of the minus terminal 3 is aligned with the land 42 of the printed wiring board 4. The contacts are respectively fixed by soldering. Alternatively, the contact 22 of the plus terminal 2 and the contact 32 of the minus terminal 3 come into contact with the lands 41 and 42 while being elastically pressed, and are electrically connected and fixed by an elastic reaction force due to the pressing strain. You may. Next, battery 5
0 is inserted through the loading opening 19 and loaded and fixed.

As shown in FIG. 3, the battery 50 is inserted from the loading opening 19 in the direction of the minus terminal 3, and the contact 33 provided on the minus terminal 3 and the plus terminal 2 are provided.
After the contacts 23 provided on the negative terminal 3 are distorted and pushed into the lower side of the projection 15, the battery 50 is placed on the side A of the battery holder 1 by the reaction force of the contact 33 provided on the minus terminal 3. Pressed and assembled. In this pressed state, the battery 50 is supported and supported by the projections 15 and 16 to prevent the battery 50 from falling off and the like and is fixed.

[0019]

As described above, according to the present invention, according to the present invention, in the mounting structure of the battery holder, the crimping element of the terminal is inserted from the side of the substrate into the insertion groove provided in the battery holder. The terminal is pressed and inserted, distorted, fixed by its elastic force, and the terminal can be accurately positioned and fixed to the battery holder without using a jig or the like. Also, by mounting the battery holder to the substrate in the fixed state, the second contact of the terminal is aligned and soldered to the land, or is aligned and pressed and fixed, and the electrical contact is made. , The work efficiency is good, there is no variation in position, the terminals are not distorted when the battery is loaded, and the battery can be loaded more reliably. Further, in the mounting structure of the battery holder in which the terminal mounted on the battery holder is pressed and fixed to the substrate and electrically contacted, the terminal is replaced when the battery holder is replaced or a failure occurs in the contact portion of the terminal. The battery holder can be simply pulled out upward and removed without removing the soldering of the substrate and the board.

[Brief description of the drawings]

1A and 1B show a mounting structure of a battery holder according to an embodiment of the present invention, wherein FIG. 1A is a plan view, FIG. 1B is a cross-sectional view, and FIG.
Sectional drawing, (d) is CC sectional drawing.

FIG. 2 is a perspective view showing a disassembled state of a mounting structure of a battery holder.

FIG. 3 is a sectional view when a battery is mounted.

FIG. 4 is a perspective view showing a plus terminal and a minus terminal.

FIG. 5 shows a mounting structure of a conventional battery holder, and (a)
Is a perspective view showing an exploded state, (b) is a sectional view when a battery is mounted, and (c) is a perspective view showing a plus terminal and a minus terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Battery holder 2 ... Positive terminal 3 ... Negative terminal 4 ... Board 11 ... Groove for inserting a positive terminal 12 ... Groove for inserting a negative terminal 14 ... Claw for mounting 19 ..Battery loading opening 21 ... Crimper 22 ... Second contact 23 ... First contact 31 ... Crimper 32 ... Second contact 33 ... First contact Child 41 ・ ・ ・ Plus land 42 ・ ・ ・ Minus land 43 ・ ・ ・ Cut mounting case 50 ・ ・ ・ Battery 51 ・ ・ ・ Plus electrode surface 52 ・ ・ ・ Minus electrode surface

Claims (4)

[Claims] 1. A terminal elastically contacting a battery is fixed to a battery holder, the battery holder is mounted on a substrate, and a part of the fixed terminal is mounted on a land provided on the substrate. In the mounting structure of the battery holder electrically connected to the battery holder, the battery holder is provided with an insertion groove opened toward the substrate side, and a mounting claw that engages with the substrate when mounting the battery holder. The terminal is a first contact that resiliently contacts the battery, a crimp that is pressed and inserted into the insertion groove from the substrate side, and is pressed against a land provided on the substrate when the battery holder is mounted. A battery holder mounting structure comprising: 2. The crimping element has elasticity, and when pressed into the insertion groove, is distorted by the shape of the groove, and is held and fixed in the groove by elastic force. The mounting structure of the battery holder according to claim 1, wherein: 3. The second contact has elasticity, and when the battery holder is mounted, the second contact is pressed against a land provided on the substrate by an elastic force to be electrically connected. The mounting structure of the battery holder according to claim 1. 4. The mounting structure for a battery holder according to claim 1, wherein a portion formed by pressing the second contact on a land provided on the substrate is further soldered.