JPH07183013A - Battery accommodation structure - Google Patents

Abstract

PURPOSE:To provide battery accommodation structure in which a battery can be mounted on a printed circuit board without use of a battery holder, which makes unnecessary a reduction in the number of mounting components on the printed circuit board. CONSTITUTION:A printed circuit board 80 is screwed to a main body case 60 and cover 70 is fixed to the case 60. A guide 72 of the cover 70 is positioned in a specified position so as to come in contact with terminal plates 84, 85 of a coin battery 90. A space is formed between the guide 72 and the printed circuit board 80. The coin battery 90 is mounted in such a way that the battery 90 is aslant inserted into the guide 72 from the direction of arrow E, and a cover 100 is slid in the direction of arrow D so that a bulge 104 of the cover 100 presses the upper surface of the battery 90 and an anode surface 93 in the bottom is fit to a contact 85a of the anode terminal plate 85 and a cathode terminal 91 to the cathode terminal plate 91. Since the battery 90 is inserted from the direction of arrow E, force to deform the terminal plate 84 is not applied. When the cover 100 is removed, one end of the battery 90 is floated by the spring action of the contact 85a to be easily taken out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery storage structure suitable for portable electronic equipment such as a selective call receiver.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show a battery storage structure in a conventional selective call receiver. The casing of this receiver is composed of a main body case 10 and a cover 20 that covers the opening 11 of the main body case 10. A printed wiring board unit 30 is attached to the main body case 10. A battery holder having a coin-shaped battery 40 stored in the opening 21 of the cover 20.
50 is inserted.

The battery holder 50 has a recess 51 for accommodating the coin battery 40, and the cathode surface 41 of the coin battery 40 inserted in the recess 51 has a cathode terminal plate 52 provided on the bottom surface of the recess. It contacts the contact spring 52a. Further, on both side surfaces of the holder 50, there are provided pawls 54 and 55 which are fitted with engaging portions (not shown) of the cover 20 when the holder 50 is inserted into the cover 20 through the opening 21. A contact portion 52b integrally formed with the cathode terminal plate 52 is provided on the side surface.

The printed wiring board unit 30 is constructed by mounting various electronic parts such as a switch 32 on both front and back surfaces of the printed wiring board 31, and as shown in FIG. A spring terminal 34 that comes into contact with the contact portion 52b of the battery holder 50 and a spring terminal 35 that comes into contact with the anode surface 42 of the coin-shaped battery 40 when inserted into the side opening 21 are provided at predetermined positions.

Therefore, by inserting the battery holder 50 through the opening 21 of the case 20 and mounting the battery holder 50 in the housing, the cathode and the anode of the coin battery 40 are electrically connected to the printed wiring board 21. Connected.

However, according to this conventional structure, when the battery holder 50 is taken out of the housing for battery replacement or the like, the contact portion 52b or the contact spring 52a is often touched by the hand, and the contact portion 52b or the contact portion 52b is contacted. Poor contact may occur due to oil, dust, etc. attached to the spring 52a.
Further, since the cathode side of the coin-shaped battery 40 is connected to the printed wiring board via the two contact portions of the cathode terminal plate 52 and the spring terminal 34, contact failure is likely to occur from that surface as well. Furthermore, in the battery holder 50, the claws 54 and 55 which are parts to be fitted to the case side are easily broken, and when the claws 54 and 55 are broken, the entire holder 50 including the cathode terminal plate 52 must be replaced. So it wasn't economical.

On the other hand, in order to solve the above-mentioned inconvenience, when the printed wiring board 31 itself is provided with a battery case and the coin type battery is directly accommodated in the battery case, the printed wiring board 31 is Since the space of other electronic components that can be mounted on the printed wiring board 31 is reduced by the amount occupied by the battery case to be attached, the printed wiring board becomes large, and therefore the electronic device itself becomes large. There was a problem of doing.

[0008]

As described above, in the battery storage structure described above, the battery holder housing the battery is housed in the equipment casing, so that the contacts provided on the battery holder are not oiled. In addition, dust and the like are likely to adhere, and the number of contacts is large, so that a contact failure is likely to occur. There is also a problem that the claw of the battery holder provided for engaging the battery holder with the housing is easily broken. On the other hand, if the battery housing case is attached to the printed wiring board in the housing, there is a problem that other electronic parts that can be mounted on the printed wiring board are reduced by the amount of the battery housing case occupied in the printed wiring board. there were.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an electronic component that can mount a battery on a printed wiring board without using a battery holder and can be mounted on the printed wiring board is provided. An object is to provide a battery storage structure that does not need to be reduced.

[Means for Solving the Problems]

In the storage structure according to the first aspect of the invention, the main body case to which the printed wiring board is attached, and the opening for inserting the battery attached to the main body case so as to cover the printed wiring board. And a cover provided with a guide portion for guiding the battery inserted through this opening and positioning it at a predetermined position of the printed wiring board, and a battery provided at the printed wiring board and positioned at the predetermined position. It comprises an anode terminal in contact with the anode, a cathode terminal in contact with the cathode of the battery, and a battery lid attached to the cover so as to cover the opening of the cover.

In the storage structure according to the second invention, in the first invention, a coin-shaped battery is used as the battery, and the battery lid is attached to the cover while pressing the coin-shaped battery toward the printed wiring board. It is composed.

[0012]

In the first aspect of the invention, since the guide portion for positioning the battery at a predetermined position on the printed wiring board is provided on the cover side, other electronic parts are mounted between the printed wiring board and the guide portion. It becomes possible to provide a space that can be used, and electronic parts can be arranged in the vicinity of the guide portion of the printed wiring board.

In the second aspect of the invention, since the battery lid is attached to the case in a state in which the coin-shaped battery is pressed toward the printed wiring board, the electrode surface of the coin-shaped battery is printed by mounting the battery lid. It can be brought into close contact with the terminals provided on the plate.

[0014]

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 6 are views showing a first embodiment, FIG. 1 is an exploded perspective view of a selective calling receiver, FIG. 2 is an external view of the selective calling receiver, and FIG. 3 is a battery taken out from the selective calling receiver. 2 is a perspective view showing a state, FIG. 4 is a sectional view taken along the line AA of FIG. 2, FIG. 5 is a sectional view taken along the line BB of FIG. 2, and FIG. 6 is a sectional view taken along the line CC of FIG.
It is a line sectional view.

The electronic device according to the present invention is a selective call receiver. As shown in FIG. 1, the casing of this receiver is a main body case.
A cover for covering the shoe 60 and the opening 61 of the body case 60.
The printed wiring board unit 80 is attached to the main body case 60, and the cover 70 is provided with an opening 71 for inserting the coin-shaped battery 90.
The battery lid 100 that covers the opening 71 is detachably attached to 0.

The printed wiring board unit 80 is constructed by mounting switches 81 and other electronic components 82 on both front and back surfaces of the printed wiring board 83.
On the surface side of 3, the anode terminal plate 8 for contacting with the battery peripheral surface 91a, which is one of the anode surfaces 91 of the coin battery 90.
4 and a cathode terminal plate 85 for making contact with the bottom surface of the battery, which is the cathode surface 93. Both terminal plates 84, 85
Are arranged on the printed wiring board 83 so as to come into contact with the respective electrode surfaces 91a, 93 of the coin-shaped battery 90 inserted from the opening 71 of the cover 70, and the anode terminal plate 8
4 is formed of a leaf spring so that the tip end side can move in the direction of the arrow, and the cathode terminal plate 85 has a contact portion 85a that is elastic in the vertical direction in FIG. Further, as shown in FIGS. 4 and 5, the electronic components 82 mounted on both front and back surfaces of the printed wiring board 83 are densely mounted on all areas of the printed wiring board 83 except both terminal boards 84 and 85. ing.

The cover 70 has a guide portion 72 formed at the opening 71. As shown in FIG. 6, the guide portion 72 is formed in a curved shape along the peripheral surface 91 a of the coin battery 90, and the coin battery 90 has the guide portion 7.
It is positioned at a predetermined position of the printed wiring board 83 which can be guided by 2 and come into contact with both the terminal boards 84 and 85.

As shown in FIG. 5, the battery lid 100 has ridges 101 formed on both side surfaces, which engage with grooves 74 formed on both side edges of the opening 71 of the cover 70. And the groove 74
Is inserted into the opening 71 from the direction of the arrow D shown in FIG. 1, and is attached to the cover 70 in a state of covering the opening 71. As shown in FIG. 4, a projection 102 that engages with a recess 75 formed on the cover 70 side is provided at the tip of the cover 70, and the battery lid in the direction of coming out of the cover 70 is provided. The movement of 100 causes the projection 1 to engage with the recess 75.
Blocked with 02. Further, a curved bulge 104 for pressing the coin-shaped battery 90 is formed on the surface of the battery lid 100 facing the printed wiring board 83.

The above-mentioned receiver is assembled by body case 60.
Screw the printed wiring board unit 80 onto the
This is done by fitting the cover 70 to the sleeve 60 with a claw fitting and a screw. Now, as shown in FIGS. 5 and 6, the guide portion 72 of the cover 70 is positioned at a predetermined position for guiding the coin battery 90 so that it can contact both the terminal plates 84 and 85. The guide portion 72 and the printed wiring board 83
A gap is formed between the printed wiring board 83 and the printed wiring board 83, and the circuit component 82 can be mounted near the guide portion 72 as described above.

To mount the coin-shaped battery 90 on the receiver, first, as shown in FIG. 1, the coin-shaped battery 90 is slightly tilted and inserted into the guide portion 72 from the direction of arrow E, and then the battery lid is attached.
This is done by attaching 100 to the cover 70 from the direction of arrow D. When the battery lid 100 is slid in the direction of the arrow D along the groove 101 of the cover 70, the bulging portion 104 of the battery lid 100 presses the upper surface of the coin-shaped battery 90, and thus the cathode surface 93 which is the bottom surface. Is the cut point 8 of the cathode terminal plate 85
5a, and the degree of adhesion of the anode surface 91a to the anode terminal plate 84 is also improved. Since the coin battery 90 is inserted into the housing from the direction of arrow E, the anode terminal plate 8
No force is applied by the coin battery 90 to deform the 4.

When the coin battery 90 is taken out, as shown in FIG. 3, when the battery lid 100 is removed, the one end 90a side of the coin battery 90 is slightly moved by the spring force of the cut point 85a of the cathode terminal plate 85. Since it floats up, it can be taken out by putting a finger on the concave portion 77 formed in the guide portion 72. still,
When the other end 90b side of the coin battery 90 is pressed, one end 90
Since the floating amount on the a side also increases, the battery 90 can be taken out more easily.

FIG. 7 is a diagram showing a second embodiment of the present invention. This example shows a case in which the present invention is applied to a cylindrical battery 90A. A printed wiring board 83A attached to the main body case 60A has an anode terminal 84 for contacting an anode 91 of the battery 90A and the battery 90A. Is provided with a cathode terminal spring 85 that comes into contact with the cathode 93 of FIG.
A guide portion 72 for positioning the battery 90A inserted from 1 between the terminals 84 and 85 is provided. 1
00A is a battery lid that covers the opening 71 of the cover 70A. Also in this example, the electronic components 82 can be mounted in high density on the printed wiring board 83A in all regions except both terminals 84 and 85.

[0023]

As described above, in the first aspect of the invention, since the guide portion which plays the role of the battery case is provided on the cover side, the electronic parts are also provided in the area of the printed wiring board near the guide portion. It is possible to mount the components, and therefore it is not necessary to reduce the number of electronic components that can be mounted on the printed wiring board while forming the battery case corresponding to the inside of the housing.

Further, in the second invention, since the coin type battery can be directly mounted on the printed wiring board, in addition to the effect of the first invention, the number of contacts is smaller than that of the conventional storage structure using the battery holder. It also has the effect of reducing the number of contacts and making it difficult for insulating materials such as grease and dust to adhere to the contacts.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electronic device according to a first embodiment of the present invention.

FIG. 2 is an assembled perspective view of the electronic device of FIG.

3 is an assembled perspective view of the electronic device of FIG.

4 is a cross-sectional view taken along the line AA of FIG.

5 is a sectional view taken along line BB of FIG.

6 is a cross-sectional view taken along the line CC of FIG.

FIG. 7 is an exploded perspective view of an electronic device according to a second embodiment of the present invention.

FIG. 8 is an exploded perspective view of a conventional electronic device.

FIG. 9 is an assembled perspective view of a conventional electronic device.

[Explanation of symbols]

60 ……… Main body case 70 ……… Cover 71 ……… Opening 72 ……… Guide part 83 ……… Printed wiring board 84 ……… Anode terminal 85 ……… Cathode terminal 90 ……… Coin Shaped battery 91 ………… Anode surface 93 ………… Cathode surface 100 …… Battery lid

Claims (2)

[Claims] 1. A main body case to which a printed wiring board is attached, and the main body case so as to cover the printed wiring board.
A cover provided with a slot for inserting a battery and provided with a guide portion for guiding the battery inserted through the opening and positioning it at a predetermined position of the printed wiring board; and the printed wiring board. An anode terminal that is in contact with the anode of the battery and that is in contact with the cathode of the battery, and a battery lid that is attached to the cover so as to cover the opening of the cover. A battery storage structure characterized by being provided. 2. The battery according to claim 1, wherein the battery is a coin battery, and the battery lid is attached to the cover in a state of pressing the coin battery toward the printed wiring board. Battery storage structure.