JPS5919320Y2 - Contact terminal structure of battery compartment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of the contact terminal structure of a battery accommodating part of a portable communication device, etc., and particularly relates to a contact terminal structure of a battery accommodating part that facilitates and securely attaches and secures a contact terminal piece. It is something.

BACKGROUND OF THE INVENTION Usually, a battery accommodating portion of a portable communication device or the like is provided with a battery contact terminal for electrically connecting the battery to a printed circuit board or the like.

Conventional contact terminals are simply attached to the terminal retaining part of the battery compartment without any modification, so differences in terminal board thickness may create gaps between the terminal and the printed circuit board, resulting in contact with the circuit board. There was some variation.

If there is such variation in contact, the soldering joint area between the terminal and the printed circuit board or the like will change, and the strength with which the terminal is attached by soldering will vary, resulting in failures such as soldering.

An object of the present invention is to provide a contact terminal structure for a battery accommodating portion that prevents the occurrence of such troubles.

According to the present invention, a battery includes a battery contact terminal provided in a terminal engaging portion of a battery housing portion of a portable communication device, etc., and electrically connected to a circuit of a printed circuit board mounted on the portable communication device, etc. In the contact terminal structure of the accommodating part, the contact terminal has an elastic structure, and the contact terminal is attached to the contact terminal so that the contact strength between the end of the printed circuit board and the end of the contact terminal is approximately constant. A contact terminal structure for a battery accommodating part is obtained, which is characterized in that it is provided with a pressing part that presses the wall surface of the retaining part.

The present invention will be described in detail below with reference to the drawings.

Figure 1 is a perspective view of a portable communication device with a conventional battery housing, Figures 2a and b are cross-sectional views of a conventional battery housing and an enlarged sectional view of essential parts, and Figure 3 is a diagram of a conventional contact terminal. FIG.

A battery accommodating portion 2 is provided in a housing 1 of the portable communication device.

The battery accommodating portion 2 is made of resin or the like, and includes terminal holding portions 3a and 3b to which battery contact terminals 4 and 5 are attached.

The contact terminal 4 is connected to the printed circuit board 6 at the protruding end 8 in the shape of an abbreviation.
and are electrically connected by soldering.

When the protruding end 8 is hooked onto the printed circuit board 6 and attached, a gap is created between the wall surface 9 of the terminal holding part 3a and the contact terminal 4, so the contact area between the printed circuit board 6 and the protruding end 8 is is not constant.

Therefore, it is difficult to maintain a constant bonding strength near the protruding end portion 8, and problems such as soldering in this portion are likely to occur.

Fig. 4 is an exploded perspective view of the battery accommodating section according to the present invention. Fig. 5a
and b are a sectional view and a perspective view of essential parts of an embodiment of the present invention.

A protruding tongue piece 7 is formed on the battery contact terminal 41, and the terminal 41 itself is made of an elastic material and has a leaf spring shape.

Insert the contact terminal 41 into the retaining part 3a of the battery housing part 2,
When inserted, the protruding tongue piece 7 is pressed by the wall surface 9 of the engaging part 3a, and the tip-shaped part 8 is tilted forward by this pressing action.

When the contact terminal 41 is further inserted into the engaging portion 3a in this state, the terminal 41 is receiving a forward bending force when the L-shaped portion 8 comes out to the bottom surface of the printed circuit board 6, so the printed circuit board 6
pressed to the side.

FIG. 6 is a perspective view of another embodiment of the present invention.

The portion 10 of the battery accommodating portion 2 that engages with the terminal retaining portion 3a is formed into a substantially dogleg shape, so that the contact strength between the printed circuit board 6 and the tip portion 8 is constant due to the elasticity of the terminal 41'. .

As explained above, according to the present invention, the L-shaped portion 8 is always easily and reliably attached to the printed circuit board 6 due to the spring pressure of the dogleg shape such as the protruding tongue piece 7 or the terminal 41'. A contact terminal structure with easy soldering work and less variation in mounting strength can be obtained.

In particular, in the embodiment shown in FIG. 5, the strain caused by the spring deflection of the terminal 41 due to the attachment and detachment of the battery is absorbed around the protruding tongue piece 7, so that an ideal structure is obtained in which almost no stress is applied to the soldering part. .

[Brief explanation of drawings]

Fig. 1 is a perspective view of a portable communication device with a normal battery storage section;
Figures 2a and b are cross-sectional views of a conventional battery accommodating part and an engaging part; Figure 3 is a perspective view of a conventional contact terminal; Figure 4 is an exploded perspective view of the battery accommodating part according to the present invention; Figures a and b are a sectional view and a perspective view of essential parts of an embodiment of the present invention, and Fig. 6 is a perspective view of another embodiment of the present invention. In the figure, 1... Housing, 2...
Battery accommodating part, 3a, 3b... Contact terminal holding part,
4, 41.41', 5... Contact terminal, 6...
...Printed circuit board, 7...Protruding tongue piece,
8... L-shaped tip, 9... Wall surface of the engaging portion, 10... Dog-shaped portion.

Claims (3)

[Scope of utility model registration request] (1) A battery housing containing a battery contact terminal that is electrically connected to a circuit on a printed circuit board mounted on the portable communication device, etc., provided in the terminal holding part of the battery storage section of the portable communication device, etc. In the contact terminal structure of the above, the contact terminal has an elastic structure, and the contact terminal is provided with the terminal fitting so that the contact strength between the end of the printed circuit board and the end of the contact terminal is approximately constant. A contact terminal structure for a battery accommodating part, characterized in that a pressing part is provided for pressing a wall surface of a joint part. (2) A contact terminal structure for a battery accommodating portion according to claim 1, wherein the pressing portion is provided with a protruding tongue piece. (3) A contact terminal structure for a battery accommodating portion according to claim 1, wherein the pressing portion has a dogleg shape.