JP2013084384A - Battery holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a battery terminal to be hardly dropped off from a substrate even when the battery terminal receives a drop impact.SOLUTION: Battery terminals 14, 15 being as a portion to which a battery 10 functioning as a power supply of an electronic key 1 is installed are mounted on a substrate 11. The plus side battery terminal 14 of these is fixed to the substrate 11 at its root part by a solder. A pair of impact absorption parts 19, 19 having a spring property are formed on the root part of the battery terminal 14 by cutting the same parts. The impact absorption parts 19 prevent an impact load from being applied to a solder attachment part 16 by absorbing the impact load if the impact load in a direction from the battery 10 to the solder attachment part 16 applies to the battery terminal 14 upon occurrence of the impact.

Description

  The present invention relates to a battery holder that holds a battery in an electrical contact state.

  Conventionally, a battery holder 81 as shown in FIG. 5 is provided in an electronic key that moves a battery as a drive source (see Patent Document 1). In this type of battery holder 81, a battery terminal 84 that holds a battery (button battery) 83 in an electrical contact state is mounted on the mounting surface of the substrate 82. The battery terminal 84 is attached and fixed to the substrate 82 by, for example, solder.

JP 2005-240380 A

  By the way, when the electronic key is accidentally dropped from the hand, an impact load Fk applied from the battery 83 to the battery terminal 84 is generated in a direction toward the soldering portion 85 of the battery terminal 84 depending on the direction of the impact generation. Sometimes it ends up. As described above, when the load of the impact load Fk is directed to the soldering portion 85, the soldering portion 85 is peeled off, and the battery terminal 84 may fall off the substrate 82.

  An object of the present invention is to provide a battery holder that can make it difficult to drop the battery terminal from the substrate even when a drop impact is applied to the battery terminal.

  In order to solve the above problems, in the present invention, in a battery holder in which a battery is attached to a battery terminal and the battery is set in an electrically connected state, the substrate to which the battery terminal is attached includes A fixing portion is provided as a mounting portion of the battery terminal, and an impact absorbing portion capable of absorbing an impact load applied to the fixing portion from the battery when an impact occurs is provided integrally or separately with the battery terminal. And

  According to the configuration of the present invention, for example, when a drop impact is applied to the battery holder, even if an impact load is generated from the battery toward the fixing portion of the battery terminal, the impact load is absorbed by the impact absorbing portion. For this reason, since it becomes difficult for an impact load to reach an adhering part, possibility that the adhering part of a battery terminal will peel off from a board | substrate will become low. Therefore, even if an impact load is applied from the battery to the battery terminal, it is possible to make it difficult for the battery terminal to fall off the substrate.

  The gist of the present invention is that the impact absorbing portion is a member having conductivity and capable of electrically connecting the battery to the battery terminal. According to this configuration, since the shock absorbing portion does not affect the battery attachment, the degree of freedom of battery attachment is increased.

  The gist of the present invention is that the impact absorbing portion is integrally formed with the battery terminal by changing the shape of the battery terminal. According to this configuration, since the impact absorbing portion is an integral part of the battery terminal, it is highly effective in reducing the number of parts.

  The gist of the present invention is that the fixing portion is a soldering portion in which a member is fixed by solder. According to this configuration, the solder is easy to fix, but may fall off, but since the impact absorbing part ensures a drop-off preventing effect, the battery terminal can be easily attached and the battery terminal can be dropped off. It is possible to achieve both prevention and prevention.

  In the present invention, the impact absorbing portion includes a thin base portion standing from the fixing portion, and an impact support piece that is formed wider than the root portion and absorbs an impact load applied from the battery. This is the summary. According to this configuration, it is possible to absorb an impact load applied from the battery to the battery terminal with a simple structure.

  According to the present invention, even when a drop impact is applied to the battery terminal, it is possible to make it difficult for the battery terminal to fall off the substrate.

The disassembled perspective view of the electronic key in one Embodiment. The side view of a battery and a battery terminal part. The state diagram when an impact load is applied from the battery to the impact absorbing portion. The perspective view which shows the shape of the shock absorption part of another example. The perspective view which shows the structure of the conventional battery terminal.

Hereinafter, an embodiment of a battery holder in which the present invention is embodied in an electronic key will be described with reference to FIGS.
As shown in FIG. 1, the vehicle electronic key 1 is a key that transmits an ID signal to a vehicle (not shown) wirelessly and performs key collation with the vehicle. The electronic key 1 includes a wireless key that performs ID collation using communication from the electronic key 1 side as a trigger, and a smart key that performs ID collation using communication from the vehicle side as a trigger. If wireless ID verification is established between the electronic key 1 and the vehicle, locking / unlocking of the vehicle door, engine starting, etc. are permitted / executed.

  The housing 2 of the electronic key 1 is formed by assembling a first housing 3 and a second housing 4 made of resin. A key plate 5 having a key groove is attached and fixed to the first housing 3 on the main body side.

  An electronic component unit 6 for operating the electronic key 1 as a wireless key is housed inside the housing 2. The case 7 of the electronic component unit 6 is made of, for example, resin, and is formed by a case main body 8 that has a bottomed box shape and a lid portion 9 that closes an opening of the case main body 8. The case 7 of this example functions as a battery holder that houses a battery 10 that serves as a power source for the electronic key 1. For example, a button battery is used as the battery 10.

  Inside the case 7 is stored a substrate 11 on which various electrical components of the electronic component unit 6 are mounted. On the mounting surface of the substrate 11, an IC (Integrated Circuit) 12 that controls the communication operation of the electronic key 1, a battery terminal 13 that holds a battery 10 that is a power source of the electronic key 1 in an electrically connected state, and the like are mounted. . The battery terminal 13 includes a + side battery terminal 14 connected to the + side of the battery 10 and a − side battery terminal 15 connected to the − side of the battery 10. It becomes an electrical contact part. These terminals 14 and 15 are mounted on the substrate 11 by solder or the like, for example.

  As shown in FIGS. 1 and 2, the + side battery terminal 14 has a substantially plate-shaped soldering portion 16 that is a mounting portion by soldering to the substrate 11 at the base and a pair of buttons that support the button battery 10 from the side surface side. Arm portions 17 and 17 are formed. In the case of this example, of the pair of arm portions 17, 17, the front side in the drawing of FIG. 1 is the left arm portion 17 a and the back side of the drawing in FIG. 1 is the right arm portion 17 b. The left arm portion 17a and the right arm portion 17b are formed symmetrically in the width direction (Y-axis direction in FIG. 1). These arm portions 17a and 17b position the battery 10 with respect to the battery terminal 13 by pressing the battery 10 from both sides. The + side battery terminal 14 is mounted on the substrate 11 with the back surface of the soldering portion 16 serving as a solder surface. A support piece 18 for supporting the battery 10 from above is formed at the tip of each arm portion 17a, 17b. Note that the soldering portion 16 corresponds to a fixing portion.

  As shown in FIGS. 1 to 3, the base of each of the arms 17 a and 17 b extends from the battery 10 to the + side battery terminal 14 in the direction of the soldering portion 16 (the direction of the white arrow in FIG. 3). Shock absorbing portions 19 and 19 for absorbing the impact load F are formed, respectively. The pair of impact absorbing portions 19, 19 has a spring property by providing a notch portion 20 having a substantially T shape in top view at a location where an impact load F in the direction of the soldering portion 16 from the battery 10 is applied to the + side battery terminal 14. It is formed as a member having an elastic deformation.

  Each of the shock absorbing portions 19, 19 is formed with a thin base portion 21 erected upward from the soldering portion 16 and larger in the width direction (Y-axis direction in FIG. 3) than the root portion 21. An impact support piece 22 that receives an impact load F in the direction of the soldering portion 16 applied from the battery 10 to the + side battery terminal 14 and a positioning piece 23 that supports the battery 10 from above are provided. The impact support piece 22 is a wide wall erected in the YZ plane direction of FIG. The pair of impact absorbing portions 19 and 19 can be bent and deformed along the plane direction of the substrate 11 (the XY plane direction in FIG. 1) with the root portion 21 as a fulcrum.

  As shown in FIGS. 1 and 2, the negative battery terminal 15 is formed with a plate-shaped base portion 24 and a pair of flexible portions 25 and 25. The negative battery terminal 15 is mounted on the substrate 11 with the back surface of the base 24 as the soldering portion 16. When the battery 10 is set in the battery terminal 13, the negative battery terminal 15 contacts the negative terminal of the battery 10 with the flexible portions 25 and 25 being bent. For this reason, the flexible portions 25 and 25 push the battery 10 upward, and the upper surface of the battery 10 is pressed against the support piece 18 and the positioning piece 23, and the positioning state of the battery 10 is ensured.

Next, the operation of the battery terminal 13 of this example will be described with reference to FIG.
As shown in FIG. 3, when the impact load F is applied from the battery 10 to the positive side battery terminal 14 in the direction of the soldering portion 16 when the electronic key 1 is dropped, the shock absorbing portions 19, 19 form the root portion 21. The impact load F is absorbed by taking a shape change that elastically deforms at the fulcrum. For this reason, since the impact load F does not reach the soldering portion 16 directly, a load (stress) that causes the soldering portion 16 to be peeled off is hardly applied to the soldering portion 16. Therefore, it is possible to make it difficult for the + side battery terminal 14 to drop off due to the impact load F.

  As described above, in the case of the present example, a pair of impact absorbing portions that can absorb the impact load F by elastic deformation by cutting out a portion where the impact load F in the direction of the soldering portion 16 is applied from the battery 10 in the + side battery terminal 14. 19 and 19 were provided. For this reason, when the electronic key 1 is dropped, the impact load F applied to the positive side battery terminal 14 from the battery 10 toward the soldering portion 16 is difficult to reach the soldering portion 16 directly. Therefore, it is possible to improve the anti-drop impact performance at the battery terminal 14.

According to the configuration of the present embodiment, the following effects can be obtained.
(1) By providing a notch in the vicinity of the base of the positive side battery terminal 14, a spring-type impact absorbing portion 19 capable of absorbing an impact load F in a direction from the battery 10 toward the soldering portion 16 when an impact occurs is provided. . For this reason, even if an impact load F is generated in the direction from the battery 10 toward the soldering portion 16 when an impact occurs, it can be absorbed by the impact absorbing portion 19. Therefore, since the impact load F does not easily reach the soldering portion 16, the soldering portion 16 is difficult to peel off from the substrate 11. Therefore, it is possible to make it difficult for the + side battery terminal 14 to fall off the substrate 11 when an impact occurs.

  (2) Since the notch is provided in the positive battery terminal 14 and the impact absorbing portion 19 is provided, the impact absorbing portion 19 also serves as a member that functions as an electrical contact having conductivity. Therefore, since the impact absorbing portion 19 does not affect the attachment of the battery 10, the degree of freedom of attachment of the battery 10 is increased.

  (3) Since the notch is provided in the positive battery terminal 14 and the shock absorbing part 19 is provided, the shock absorbing part 19 is formed as an integral part of the positive battery terminal 14. Therefore, the effect is high in reducing the number of parts.

  (4) When solder is used for fixing the positive side battery terminal 14 to the substrate 11, the solder is easy to fix, but may be dropped. Therefore, in the present example, the impact absorbing portion 19 formed on the + side battery terminal 14 secures the effect of preventing the + side battery terminal 14 from falling off. The positive side battery terminal 14 can be prevented from falling off.

  (5) The shape of the impact absorbing portion 19 is a shape having a thin base portion 21 and an impact support piece 22 that supports the peripheral surface of the battery 10. For this reason, the impact absorbing portion 19 applied in the direction from the battery 10 toward the soldering portion 16 can be more effectively absorbed with a simple structure.

Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
-The shock absorption part 19 is not limited to providing a pair symmetrically. As shown in FIG. 4, the base of the positive side battery terminal 14 may be cut from a lateral position so as to have a single large impact support piece 22.

The impact load applied from the battery 10 to the positive side battery terminal 14 in the device width direction may be received by the inner wall surface of the case 7.
The impact absorbing portion 19 may have a shape in which the upper positioning piece 23 is omitted.

The shape of the impact absorbing portion 19 is not limited to the configuration described in the embodiment, and can be changed as appropriate.
The shock absorbing portion 19 is not limited to being integrally formed with the battery terminal 14, and may be formed as a separate body and attached to the battery terminal 14, for example.

The battery 10 is not limited to a button battery, and may be changed to other types.
-You may make + and-of the battery terminals 14 and 15 reverse to embodiment.
The battery terminals 14 and 15 are not limited to the shapes described in the embodiment, and can be changed as appropriate.

The method for fixing the battery terminals 14 and 15 to the substrate 11 is not limited to solder, and can be changed to other methods such as welding.
-The battery holder of this example is not limited to being applied to the electronic key 1, but can be applied to other apparatuses and devices.

  DESCRIPTION OF SYMBOLS 10 ... Battery (button battery), 11 ... Board | substrate, 13 ... Battery terminal, 14 ... + side battery terminal, 15 ...-side battery terminal, 16 ... Soldering part as an adhering part, 19 ... Shock absorption part, 21 ... Root Part, 22 ... impact support piece, F ... impact load.

Claims (5)

In a battery holder that is set in a state where the battery is attached to the battery terminal and the battery is electrically connected,
The substrate to which the battery terminal is attached is provided with a fixing portion to be a mounting portion of the battery terminal, and an impact absorbing portion capable of absorbing an impact load applied to the fixing portion from the battery when an impact is generated, A battery holder characterized by being provided integrally or separately with the battery terminal. 2. The battery holder according to claim 1, wherein the impact absorbing portion is a member having conductivity and capable of electrically connecting the battery to the battery terminal. The battery holder according to claim 1, wherein the impact absorbing portion is integrally formed with the battery terminal by changing a shape of the battery terminal. The battery holder according to claim 1, wherein the fixing part is a soldering part in which a member is fixed by solder. The impact absorbing portion includes a thin base portion standing from the fixing portion, and an impact support piece that is formed wider than the root portion and absorbs an impact load applied from the battery. The battery holder according to any one of claims 1 to 4.

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