JP2000208116A - Storage structure of battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce liquid amount of a battery entering a printed wiring board and suppress damage of electronic parts. SOLUTION: Each openings of a upper case 2 and a lower case 3 are bonded to form a case 1. A printed wiring board 6 and a first storage case 8 having terminals 10, 11 at an end surface thereof are fixed with the upper case 2. One end of the terminals 10, 11 faces inside of the case 8, and another end of that are connected with the board 6. A second storage case 17 forming a battery containing part 18 is integrally formed with the case 3. Butt end faces 8a, 17a joining each other are formed in the cases 8, 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal formed by a conductive wire between an electrode of a battery housed in a battery housing in a housing and a printed wiring board provided in the housing. The present invention relates to a battery storage structure connected via a battery.

[0002]

2. Description of the Related Art In this type of battery storage structure, terminals formed of conductive wires are provided in a battery storage portion in order to reduce the size and thickness. As this battery housing structure, there is one disclosed in JP-A-10-270008. The one disclosed herein includes an upper case and a lower case, and a housing is formed by joining the open ends of the two cases, and a battery storage case and a printed wiring board are provided in the upper case. The battery storage case has a substantially U-shaped cross section and has an opening on one surface, and an end surface of the opening is provided with a terminal formed of a conductive wire, and one end of the terminal is connected to the battery storage case. The electrode of the battery is connected. The other end is led out from the opening to the printed wiring board side, is connected to a terminal portion of the printed wiring board, and is provided at the opening of the battery storage case with a lid that allows the opening to be opened and closed.

[0003]

However, in the above-described conventional battery housing structure, when the terminal is connected to the printed wiring board, one end of the terminal faces the battery housing case and the other end is printed wiring. In order to lead out to the board, it is necessary to open the battery housing case so as not to interpose a member for shielding between the open end of the battery housing case and the printed wiring board. In addition, the structure is such that the open end of the battery storage case and the end surface of the printed wiring board are close to each other. For this reason,
When the liquid leaks from the battery, the liquid penetrates into the printed wiring board through a gap between the opening end of the battery storage case and the lid, thereby causing a problem of short-circuiting the circuit and impairing the function of the mounted electronic components. . Further, when the lid is opened, a gap is formed between the opening end of the battery storage case and the lower case where a foreign matter such as a driver can be inserted, so that electronic components on the printed wiring board may be damaged. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to reduce the amount of battery liquid entering a printed wiring board and to minimize damage to electronic components. It is to provide a storage structure.

[0005]

In order to achieve this object, a battery housing structure according to the present invention comprises a housing formed by joining open ends of two boxes to each other, and a housing provided in the housing. A battery housing having an opening, a lid for opening and closing the opening of the battery housing, a terminal provided on the battery housing, and formed of a conductive wire having one end in contact with a battery electrode; And a printed wiring board attached to one of the two boxes, the other end of which is connected to the battery housing portion, so that the terminal is mounted and covers a part of the battery in the longitudinal direction. A first storage case provided in one box, and a second storage case formed integrally with the other box so as to cover the remaining part of the battery and shield the space between the printed wiring board and the first storage case. And these first Beauty second storage case, is provided with a butt end face to be joined together by joining the two boxes. Therefore, the amount of the liquid leaking from the battery entering the printed wiring board side by the second storage case is reduced. In addition, the space between most of the battery housing and the printed wiring board is shielded by the second housing.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of the battery housing structure according to the present invention viewed from the bottom side, FIG. 2 is a view taken in the direction of the arrow II in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. In FIG. 1, a housing denoted by reference numeral 1 is composed of an upper case 2 and a lower case 3, both of which have an opening on one side. The housing 1 is fastened to each other by screws so as to join open ends thereof. Is formed.

[0007] A battery housing 1 of the upper case 2 which will be described later.
As shown in FIG. 3 and FIG. 4,
The mounting base 5 is provided integrally. Reference numeral 6 denotes a printed wiring board, which is attached to the upper case 2 through a stud 7 (see FIG. 4) protruding from the upper case 2 so as to cover an opening of the upper case 2, and corresponds to a battery housing 18. Is provided with a rectangular notch 6a.

[0008] Reference numeral 8 denotes a first storage case, which is fixed to the upper case 2 by being screwed to the mounting base 5 described above. The first storage case 8 has an opening at the rear in addition to the upper part, and the opening end has a cross-section formed in a crank shape as shown in FIG.
A terminal 10 on the negative electrode side and a terminal 11 on the positive electrode side are fitted and fixed to the upper end surface of the upright wall 8b opposite to the butted end surface 8a. The terminal 10 on the negative electrode side and the terminal 11 on the positive electrode side are both bent at a right angle, the base end is connected to the printed wiring board 6 by soldering, and the terminal 10 formed on the other end.
a, 11a are located on the inner surface of the standing wall 8b.

At one corner of the lower case 3, a rectangular opening 15 is formed. At the front end of the opening 15, a mounting piece 16 projects in the horizontal direction. A notch 16a is provided. Reference numeral 17 denotes a second storage case, which is formed integrally with the lower case 3 downward from the lower ends of both sides of the opening 15 and has a substantially U-shaped cross section.
The front side is open, and this open end has a butted end face 17a, and the bridging terminal 19 is attached to the rear end 17b. As shown in FIG. 2, at one end of the bridging terminal 19, a positive electrode terminal portion 19a is formed so as to face the terminal portion 10a of the negative electrode side terminal 10 described above.
At the other end, a negative terminal portion 19b is formed so as to face the terminal portion 11a of the positive terminal 11 described above.

In such a configuration, as shown in FIG. 1, the second storage case 17 of the lower case 3 is fitted into the notch 6a of the printed wiring board 6, so that the opening of the lower case 3 and the upper case 2 and the two cases 2 and 3 are fastened to each other by screws. When the two cases 2 and 3 are fastened to each other, as shown in FIGS. 2 and 3, the butting surfaces 8a and 17a of the first and second storage cases 8 and 17 are joined to each other.
17 forms a battery storage section 18 having an open top only. Two batteries 20,
20 is a terminal portion 10a of the terminal 10 on the negative electrode side and a bridging terminal 19
And between the terminal 11a of the terminal 11 on the positive electrode side and the negative terminal 19b of the bridging terminal 19. The cover 22 is placed over the opening of the battery storage section 18, and the elastic engagement piece 22 a of the cover 22 is
By engaging with the notch 16a of the
8 are closed.

[0011] The battery storage section 18 thus formed is
Second storage case 17 integrally formed with lower case 3
Thereby, as shown in FIG. 4, the space between the printed wiring board 6 is shielded. Therefore, even if the battery liquid leaks from the battery 20, this liquid only flows out to the printed wiring board 6 side from the gap between the upper end of the first storage case 8 and the lid 22, and the battery storage section 18 Does not flow out to the printed wiring board 6 side from the second storage case 17 covering most of the above. For this reason, the amount of the liquid leaked from the battery to the printed wiring board 6 side is reduced by the second storage case 17, so that the amount of occurrence of the short circuit of the circuit on the printed wiring board 6 is reduced. Instead, it is possible to minimize the deterioration of the functions of the mounted electronic components. Further, since the generation of a gap between the battery housing portion 18 and the printed wiring board 6 in which foreign matter can be inserted can be minimized, destruction of electronic components can be prevented as much as possible, and dust and water are prevented from being printed on the printed wiring board 6 side. Intrusion can be prevented as much as possible.

In the present embodiment, the housing 1 is formed by the two cases 2 and 3. However, the lower case 3 may be formed by a flat lid member. Also, the battery storage unit 1
Although the case where two batteries 20 are housed in the battery 8 has been described, one battery may be housed, and in that case, the terminal 1 on the positive electrode side may be housed.
Two first storage cases 8 are required in order to separately take out the terminal 1 and the terminal 10 on the negative electrode side from both ends of the battery storage unit 18. In addition, three or more batteries 20 may be stored. In the case of an odd number, two first cases 8 are required. In the case of an even number, the first case 8 is one. Individuals are fine.

[0013]

As described above, according to the present invention, the amount of the liquid leaked from the battery to the printed wiring board side is reduced by the second storage case, so that the circuit on the printed wiring board is reduced. In addition to the reduction in the amount of short circuit, the deterioration of the function of the mounted electronic component can be suppressed as much as possible. In addition, since the generation of a gap between the battery housing and the printed wiring board where foreign matter can be inserted is minimized, destruction of electronic components can be prevented as much as possible, and dust and water enter the printed wiring board side. Can be prevented as much as possible.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a battery housing structure according to the present invention viewed from a bottom surface side.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Upper case, 3 ... Lower case, 6
... Printed wiring board, 8 ... First storage case, 8a, 17
a: Butt end face, 10: Negative terminal, 11: Positive terminal, 17: Second storage case part, 18: Battery storage part,
19: bridging terminal, 20: battery, 22: lid.

Continued on the front page F term (reference) 4E360 AA02 AB02 AB13 AB42 AB54 AB59 BA08 BB04 BC03 BC04 BC06 BD03 EA18 EB04 EC05 EC11 ED02 ED12 ED23 FA08 FA12 GA03 GA04 GA07 GA22 GA29 GA33 GB99 5H020 AS14 CC12 CC24 DD02 DD20 KK11

Claims (1)

[Claims] 1. A housing formed by joining open ends of two boxes to each other, a battery housing provided in the housing and having an opening, a lid for opening and closing the opening of the battery housing, A terminal formed of a conductive wire that is provided in the battery housing and has one end in contact with a battery electrode; and a printed wiring board connected to the other end of the terminal and connected to one of the two boxes. In the battery housing structure, a first battery housing is provided in the one box so that the terminal is attached and covers a part of the battery in a longitudinal direction.
And a second storage case formed integrally with the other box so as to cover the remaining part of the battery and shield the space between the printed wiring board and the first and second storage cases. A battery housing structure, wherein the housing case has a butted end face joined to each other by joining the two boxes.