JPH10321202A - Mounting structure for battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of battery capable of more efficiently performing the mounting work of a battery by comprising a lead electrode provided with spring parts in the part connected to the battery and the part connected to a conductor, and providing a casing member provided with a surface for pressing the battery to deflect the spring parts of the lead electrode and pressing the part connected to the conductor of the lead electrode to the conductor. SOLUTION: When a casing body member 12 is put on an casing member 11, a battery 14 is pressed by the bottom surface 18 of a dent 17 to deflect intermediate spring parts 24, 29 of a lead electrode, connecting parts 23, 28 with a conductor thereof are pressed to the conductor 16 of a printed wiring board 13 and closely fitted to the conductor 16 to electrically connect the battery 14 to the printed wiring board 13. The movement of the battery 14 is arrested by the dent 17 of the casing body member 12 to prevent the battery 14 and the lead electrode from being horizontally shifted, and even if a vibration or impact is added to a body, the connecting parts 23, 28 of the lead electrode are never shifted from the conductor 16. Thus, only by putting the casing body member 12, the battery can be mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery mounting structure, and more particularly, to a pager, a cellular phone,
The present invention relates to a battery mounting structure suitable for mounting a memory backup battery in an IC memory card or the like.

[0002]

2. Description of the Related Art As shown in FIG. 4, for example, a backup battery used for a pager or an IC card has lead electrodes b and c soldered to a negative electrode surface and an anode surface of a battery a. Is mounted on a conductor on a printed wiring board and soldered to the conductor.

[0003]

However, in such a battery mounting structure, the connection between the conductor and the lead electrode is performed by soldering, and the connection is performed manually, which requires considerable labor. . In addition, when measuring the current of a circuit, accurate current measurement cannot be performed if a battery is mounted.Therefore, the battery must be mounted after the measurement, that is, part of the assembly process after the inspection process. Therefore, efficient production cannot be performed.

[0004] It is an object of the present invention to provide an improved battery mounting structure capable of performing a battery mounting operation more efficiently.

[0005]

In order to achieve the above object, a battery mounting structure according to the present invention is arranged in two housing members and an internal space formed by the housing members, and includes one housing. A printed wiring board fixed to the member, and a battery arranged in the internal space by connecting a lead electrode to the conductor of the printed wiring board, wherein the lead electrode has a portion electrically connected to the battery and a conductor. A part having a spring property is provided between the part and the part to be electrically connected, the housing member pushes the battery, the part having the spring property of the lead electrode is bent, and the part electrically connected to the conductor in the lead electrode is formed into the conductor. It has a pressing surface.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the battery mounting structure of the present invention, the battery is mounted by arranging the battery on a printed wiring board with the connection portion of the lead electrode to the battery positioned on a conductor, and fixing the printed wiring board. This is achieved by covering another housing member on the housing member that has been used. When the housing member is covered, the battery is pushed by the surface of the housing member,
The lead electrode bends and comes into close contact with the conductor, and electrical connection between the lead electrode and the conductor is made. When it is necessary to remove the battery as in the case of measuring the current of a printed wiring board, the battery can be separated from the printed wiring board simply by removing the housing member, and the battery can be re-mounted by simply covering the housing member. Can be embedded. For this reason, not only does the soldering work not be required for mounting the battery, but also the work for incorporating the battery can be performed before the step requiring the removal of the battery.

In the battery mounting structure according to the present invention, the lead electrode includes a portion having a spring property between a portion in contact with the battery and a portion in contact with the conductor. Press the battery, flex the lead electrode,
A recess for pressing the lead electrode against the conductor may be provided, and the position of the battery may be fixed by the recess, so that the displacement of the lead electrode from the conductor may be more reliably prevented. Further, a groove is provided in a portion of the lead electrode electrically connected to the conductor, so that the pressing force against the printed wiring board is increased, and the lead electrode and the conductor are bent more freely along the conductor, so that the lead electrode and the conductor are more firmly adhered. You may do so.

An embodiment of the battery mounting structure of the present invention will be described below with reference to FIGS.

FIG. 1 shows a part of a pager in which the battery mounting structure is incorporated. Reference numerals 11 and 12 denote housing members constituting a case or housing of the pager, 13 denotes a printed wiring board on which an electric circuit is mounted,
Reference numeral 14 denotes a battery for backing up a memory on the printed wiring board.

The housing member 11 has a shallow box shape with an open top, and a boss 15 for receiving the printed wiring board 13 is provided on the bottom surface. The housing member 12 has a shallow box shape with an open lower surface, and covers the upper opening of the housing member 11 and forms a sealed space together with the housing member 11. 12 and fastened to the housing member 11 by screws or the like. The printed wiring board 13 is placed on the boss 15 of the housing member 11 and housed in the internal space of the housing, and is fixed to the boss 15 by a screw.

The battery 14 is for backing up the memory of the pager, and has a lead electrode connected to the conductor 16 on the printed wiring board 13 and is incorporated in the internal space of the housing. 2 and 3 show the details of the battery 14. The battery 14 is a cylindrical battery, a so-called button battery. The lead electrode 21 is made of a narrow and elongated metal plate, and has a connection portion 23 with the conductor 16 of the printed wiring board 13 and a connection portion 22 with the battery 14 at both ends. Connection part 22
Has a generally inverted L-shape, as best shown in FIG. One side 22a of the L-shape contacts the anode surface of the battery 14 and the other side contacts the peripheral surface of the battery 14, respectively.
The side 22 a is soldered to the anode surface of the battery 14.
The connection portion 23 is arranged in parallel with the side 22a constituting the connection portion 22 and outside the side 22a. An intermediate portion 24 connects these connecting portions 22,23. The lead electrode 26 is also made of a metal plate having a narrow width and an elongated shape.
And a connection portion 28 of the printed wiring board 13 for connection with the conductor 16. Connection 27 is brought into contact with the cathode surface of battery 14 and is soldered to battery 14. The connection part 28 is parallel to the connection part 27 and the lead electrode 21.
Are located in the same plane as the connecting portion 23 and outside the connecting portion 27, and the intermediate portion 29
7, 28 are connected. For this reason, the intermediate portions 24 and 29 of the respective lead electrodes 21 and 26 are inclined.
When the battery 14 is pushed from above, it can flex. Further, a groove 31 is formed in the connection portion 23 of the lead electrode 21.
However, a groove 32 is provided in the connection portion 28 of the lead electrode 26, and these connection portions 23 and 28 are forked.

As shown in FIG. 1, the housing member 12 constituting the housing is provided with a recess 17 into which the battery 14 fits. The recess 17 is provided on a boss 19 formed integrally with the housing member 12. The recess 17 has a cylindrical shape, and the distance D between the bottom surface 18 and the surface of the printed wiring board 13 on the housing member side is the distance between the anode surface of the battery 14 and the connection portions 23 and 28 of the lead electrodes 21 and 26. It is configured to be smaller than H. Battery 14 has lead electrodes 21 and 26
Is brought into contact with the conductor 16 of the printed wiring board 13 and is fitted into the recess 17 together with the connection portion 22 of the lead electrode 21.

In this pager, the battery 14 is mounted, for example, by disposing the printed wiring board 13 on the housing member 11 and screwing it to the boss 15 of the housing member 11, and then connecting the connection portions 23 and 28 to the conductor 16. The battery 14 is placed on the printed wiring board 13 by contact, the battery 14 is fitted into the recess 17, and the housing member 12 is covered on the housing member 11,
2 by screwing it to the housing member 11 or by fitting the battery 14 and the recess 17 of the housing member 12 so that the housing member 12 covers the housing member 11 and the housing member 12 is attached to the housing member 11. This is done by screwing.

When the housing member 12 is fixed, the battery 14 is pushed by the bottom surface 18 of the recess 17 and the lead electrode 2 is pressed.
The intermediate portions 24, 29 of the first and second 26 are bent, and the connection portions 23,
28 is pressed against the conductor 16 and closely adheres to the conductor 16, so that the battery 14 and the printed wiring board 13 are electrically connected. At this time, since the movement of the battery 14 is prevented by the recess 17 of the housing member 12, the battery 14 and the lead electrodes 21 and 26 do not shift in the horizontal direction, and even if vibration or impact is applied to this pager, The connection portions 23 and 28 of the lead electrodes 21 and 26 do not shift from the conductor 16. Further, in this battery mounting structure, the connection portions 23, 2 of the lead electrodes 21, 26, which are in contact with the printed wiring board 13,
8 are formed bifurcated by the grooves 31 and 32, the pressing force per unit area of the connection portions 23 and 28 against the printed wiring board 13 is increased, and the connection portion 2
3 and 28 can be bent freely along the conductor 16, so that even if the lead electrodes 21 and 26 with low molding accuracy and the printed wiring board 13 with low surface accuracy of the conductor 16 pass the inspection, the lead electrodes 21 and 26 can be bent. 26, the connecting portions 23 and 28 are firmly adhered to the conductor 16, and the lead electrodes 21 and 26 and the conductor 1
6 can be reliably connected.

After the printed wiring board 13 and the battery 14 are assembled in the housing in this manner, the current of the circuit of the printed wiring board 13 is measured, and the measurement is performed with the battery 14 removed. In the battery mounting structure according to the present invention, the battery 14 can be separated from the printed wiring board 13 simply by removing the housing member 12. This can be performed simply by fitting the housing member 12 into the recess 17, covering the housing member 12 on the housing member 11, and screwing the housing member 12 to the housing member 11.

[0016]

As described above, the battery mounting structure of the present invention can be mounted by simply placing the battery on the printed wiring board and covering the housing member with the battery. Since the soldering operation is not required, and the battery can be incorporated before the step requiring the removal of the battery such as the inspection step, and the product assembling operation can be performed efficiently, the battery mounting cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of a battery mounting structure of the present invention.

FIG. 2 is a plan view of a battery.

FIG. 3 is a side view of a battery.

FIG. 4 is a perspective view of a battery in a conventional battery mounting structure.

[Explanation of symbols]

 11, 12 ... housing member 13 ... printed wiring board 16 ... conductor of printed wiring board 18 ... pressing surface of housing member 14 ... battery 21, 26 ... battery lead electrode 22, 27 ... connection part with battery 23, 28 ... Connecting parts with conductors 24,29 ... Parts with spring properties

Claims (3)

[Claims] 1. A printed wiring board arranged in an internal space formed by two housing members, a housing member, and fixed to one of the housing members, and a lead electrode connected to a conductor of the printed wiring board. A battery mounting structure including the battery disposed in the internal space, wherein the lead electrode includes a portion having a spring property between a portion electrically connected to the battery and a portion electrically connected to the conductor; A mounting structure for a battery, comprising a surface where a member presses a battery, deflects a resilient portion of a lead electrode, and presses a portion of the lead electrode electrically connected to a conductor against the conductor. 2. A printed wiring board disposed in an inner space formed by two housing members, a housing member, and fixed to one of the housing members, and a lead electrode connected to a conductor of the printed wiring board. A battery mounting structure including the battery disposed in the internal space, wherein the lead electrode includes a portion having a spring property between a portion electrically connected to the battery and a portion electrically connected to the conductor; A mounting structure for a battery, comprising: a member for engaging a battery, bending a resilient portion of a lead electrode, and pressing a portion of the lead electrode electrically connected to the conductor against the conductor. 3. The battery mounting structure according to claim 1, wherein a portion of the lead electrode electrically connected to the conductor is formed with a groove to form a fork.