JPS5834564A - Battery connecting mechanism for electronic apparatus - Google Patents

Abstract

PURPOSE:To reduce the cost of the contact members, and facilitate assembly of an electronic apparatus by reducing the number of the work processes by enabling a plural number of batteries to conduct with each other by use of one contact member having elastic springs. CONSTITUTION:In the figure, the symbol 12 represents a small electronic apparatus such as an electronic table computer. The symbols 13 and 14, respectively, are an over and an under case which consist of formed plastic members constituting the outer frame of the apparatus 12, and are connected to each other so that they can be detached. The symbol 20 represents a short-circuit contact member made of a conductive body such a metallic elastic body, and is positioned and fixed on the outer case 14. The member 20 has a pair of springs 20a and 20b. The springs 20a and 20b conduct with the positive electrodes of batteries 7 and 8 by touching them with elastic pressure. At the same time, the springs 20a and 20b applies pressure to the contacts between ends of contact members 18 and 19, and the negative electrodes of the batteries 7 and 8.

Description

[Detailed description of the invention] The present invention relates to a battery connection mechanism for electronic equipment.

Conventionally, the battery connection mechanism commonly used in small electronic devices such as electronic desktop calculators (hereinafter referred to as calculators) is as shown in Figure 1, which will be briefly explained below. . In Figure 1, 1 is a calculator, 2.
Reference numerals 3 denote an upper case and a lower case, respectively, which constitute the outer frame of the battery 41, 3a and 3b are battery storage sections provided in the lower case 3, and 4 is a battery storage section 3m, which is removably attached to cover the top of 3b. It is a battery cover. The upper case 2, lower case 3, and battery cover 4 are each made of a plastic molded product, and the interior formed by these parts houses various electronic parts for configuring the functional tube of the calculator. Needless to say, there are no 4. Reference numeral 5 denotes a printed wiring board on which electronic components such as the arithmetic element L8I of the calculator 1 are mounted, and is fixed to the upper case 2 with screws 6. 7 and 8 Batteries such as mercury batteries that supply power to the electronic components on the printed wiring board 5 are stored in the battery compartments 3m and 3b, respectively, and are printed via the battery contacts described below. It is electrically connected to the wiring board 5.

9.1lfi is a contact member made of a metal elastic conductor Q, and 10 is a short-circuit contact member made of the same material. One end of the contact member 9 is brought into electrical contact with the positive electrode of the battery 8 under elastic pressure, and the other end is connected and fixed on the printed wiring board 1j5. The short circuit contact member 10 has one end connected to the battery 7.
The other end is fixed to the upper case 2 or the lower case 3 in contact conduction with the positive electrode of the battery 8 with elastic compression, and the other end is connected with the negative electrode of the battery 8 with elastic compression. Therefore, batteries 7 and 8 are connected in series by this short-circuit contact member. One end of the contact member 11 is in contact with the negative electrode of the battery 7 through elastic compression, and the other end is connected and fixed on the printed wiring board 5 .

In the conventional battery connection mechanism configured as described above, it is necessary to use a relatively expensive metal material with high spring elasticity so that all of the contact members 9, 10, and 110 can make stable electrical contact. In addition, it is necessary to perform heat treatment to remove internal stress generated during bending of the contact.

In addition, the battery cover 3, which is a component for sealing the openings of the battery compartments 3a and 3b, is structurally essential and increases the number of 69s products. When replacing the battery, a locking structure that can be easily attached to and detached from the lower case 3 is required, which results in a complicated shape, and also prevents the contact member 11 from suppressing the battery 7 and the battery 8.
In order to receive a force that opposes the suppression of the short-circuit contact member 10, it is necessary to consider mechanically sufficient g1 degree including the locking structure to the case. Furthermore, when replacing the battery, after inserting a new battery, it is necessary to insert and lock the battery cover 3t into the case while pressing it against the battery with a force that counters the pressure of the contact member, resulting in poor operability. I have a meeting.

The present invention was made in order to solve the problems of the conventional art described above.The purpose of the present invention is to be able to reduce the number of parts through a simple structure, and to use materials that are inexpensive and require fewer processing steps. It is an object of the present invention to provide a battery connection mechanism for electronic equipment that facilitates assembly work and also enables cost reduction of the product.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a sectional view showing a battery connection mechanism according to an embodiment of the present invention, in which 12 is a small electronic device such as a calculator (hereinafter referred to as the device), and 13 and 14 are the outer frames of the device L, respectively. An upper case and a lower case are made of plastic moldings and are separably locked to each other. The internal space formed by the upper case 13 and the lower case 14 is surrounded by a plurality of walls 11C extending inward from the upper case 13, and is provided with memory battery storage parts 15a and 15b. Batteries 7.8 are stored inside.
Reference numeral 16 denotes a printed wiring board on which electronic components of the device 12 are mounted, and is fixed to the upper case 13 with screws 17. Reference numerals 18 and 19 denote contact members made of a conductive material, one end of which is connected and fixed on the glint wiring board 16, and the other end is located in the battery storage portion 15b so as to be in contact with the glass electrode of the battery 8. Furthermore, one end of the contact member 19 is similarly connected and fixed on the printed wiring board 16, and the other end is located in the battery storage portion 15a so as to be in contact with the negative electrode of the battery 7.

Note that the contact members 18 and 19 are connected to -S of the wall 13C, respectively.
Through the notches provided in the battery compartments 15m and 15b
It extends inward. Reference numeral 20 denotes a short-circuit contact member made of a conductor such as a metal elastic body, and is positioned and locked on the lower case 14. This short circuit contact member 20 has a pair of spring parts 20
a, the shape has 20 bt, of which the spring part is 20 m
The spring part 20b contacts and conducts with the glass electrode of the battery γ with elastic pressure, and applies pressure to the contact between one end of the contact member 19 and the negative electrode of the battery 7 due to its own elastic deformation. The contact member 1 conducts contact with the negative electrode with elastic compression, and also due to its own elastic deformation.
8 and the glass electrode of the battery 8 is suppressed. Therefore, the short circuit contact member 20 simply connects the battery 7 with [1'
It not only has the function of short-circuiting 1tlB, but also has the function of short-circuiting the other contacts, that is, the contact member 18, the battery 8, and the contact member 1.
It has the function of providing suppression for electrical contact between the battery 9 and the battery 7.

Next, the locking structure between the short-circuit contact member 20 and the lower case 14 will be explained using the exploded perspective view of FIG. 3.

The lower case 14 has a series of locking claws 14a for the short-circuit contact member 20, and the short-circuit contact member 200 is arranged in the locking claw 14m for the short-circuit contact member 20.
The short-circuit contact member 20 is locked and fixed by the engagement of the base parts. A short circuit contact member 2 is located approximately in the center of the locking claw 14m.
A positioning hole 20C is drilled at a position corresponding to the short circuit contact member 20KFs, and the positioning hole 20C is formed at a position corresponding to the short circuit contact member 20KFs so that the positioning hole 14b is positioned immediately before the 0 is pressed and locked. Therefore, the short circuit contact member 2 is moved in the direction of the arrow from the position of the lower case 14 and the short circuit contact member 2o shown in FIG.
When the short-circuiting contact member 2° is further pushed down after aligning the positioning hole 200 with the positioning groove 14b at 0f, the two pairs of locking claws 14m facing each other bend in the direction of spreading outward, and the elasticity is reduced. The base of the am contact member 20 also bends in the radial direction due to the pile force from the slope of the locking claw 14m, so the edge of the short-circuiting contact member 20 crosses over the tip of the locking claw 14m and is in the state shown in 2nd Ill. It is locked at.

Furthermore, in the embodiment of the present invention described above, the battery 7,
8 is a contact member 18 which is suppressed by the short-circuit contact member 20.
．． 19, the shape and material of the contact members 18 and 19 need only be able to electrically contact the batteries 7 and 8, and may be elastic or not. There's no need to prepare. Further, the battery replacement is performed by separating the upper case 13 and the lower case 14 from each other.

Since the present invention is constructed and operates as described above, it provides the following excellent effects.

The contact member with spring elasticity only needs to be a single part, and the other contact members do not necessarily need to be made of elastic materials, allowing the use of inexpensive materials and eliminating the need for heat treatment, which reduces the cost of contact members. This makes it possible to reduce the amount of processing required, and to simplify assembly. In addition, by eliminating the need for a battery cover, the number of components can be reduced, and there is no need for a complicated structure associated with the battery cover, making it easier to assemble the product and achieving better performance. . Furthermore, battery replacement is also done by separating the casings from each other, so there is no need for a battery cover. It is extremely easy to operate.

Incidentally, in the above embodiment of the present invention, a structure using two batteries was explained, but the number of batteries used is not necessarily limited to two, and in the machine 11 using three or more batteries, t
The configuration according to the present invention can be easily implemented.Brief explanation: A sectional view showing a conventional example of the 111th power expansion connection mechanism, 2nd W.
JFi A cut W showing an embodiment of the battery connection mechanism according to the present invention
3 are perspective views showing one structure of the short-circuit contact member in the above embodiment.

Here, 12... Finely wrinkled electronic equipment, 13... Upper case, 14... Lower case, 15 m, 15b... Battery storage section, 16... Printed wiring board, 18. 19... Contact Member 20: A short-circuit contact member.

Agent Patent Attorney Yasushi Otsuka Tokusugi'
：j1H゛(``・ Figure 1 □ Figure 2 □ Figure 3 ≦

Claims (1)

[Claims] In an electronic device having an outer frame consisting of two mutually detachable casings, a battery accommodating portion for accommodating at least one battery is provided within the outer frame, and a battery accommodating portion is provided in one of the casings. A connecting means is provided to connect to one electrode of the battery housed in the battery, and a conductive elastic body is provided to the other housing to connect to the other electrode of the battery, and when the two housings are combined, A battery connection mechanism for an electronic device, characterized in that the elasticity of the conductive elastic body causes the battery to be connected to the connection means of the other housing under pressure.