JP2537268Y2 - Contact box structure of battery box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact terminal structure in a battery box for storing dry batteries.

[0002]

2. Description of the Related Art Conventionally, as a contact terminal structure of a battery box of this kind, there is known a technique described in Japanese Utility Model Application No. 63-186054.

This prior art is intended to prevent the battery from being inserted in the anode coil spring contact piece with which the anode of the battery comes in contact. The configuration is shown in FIGS.
As shown in FIG.
A shallow groove 3 is formed on the bottom surface of the recess 2 so as to extend along the contact-side starting end 5 bent radially at one end of the coil spring contact piece 4. The insulating plate 1 and the coil spring contact piece 4 press the contact-side starting end 5 into the shallow groove 3 on the front surface side of the insulating plate 1, and the distal end coil portion of the coil spring contact piece 4 from the back side of the insulating plate 1. 6 are assembled by pressing and holding them. In the figure, reference numeral 7 denotes a battery, and reference numeral 8 denotes an anode of the battery.

[0004]

However, in such a conventional technique, the insulating plate 1 for receiving the anode 8 of the battery 7 is plate-shaped, and the concave side wall of the recess 2 surrounds the battery anode 8. Therefore, the stored battery 7 may rattle, and if the battery 7 vibrates, the
However, there is a problem that the wire is detached from the insulating plate 1. In addition, since the insulating plate 1 is sandwiched and connected to the contact side starting end 5 of the coil spring contact piece 4 by the tip coil portion 6, the vibration of the battery 7 and the impact of the battery box as described above may be caused. However, there is a problem that it is easily detached from the spring coil contact piece 4 in the direction of the arrow shown in FIG.

The present invention has been made in view of such a conventional problem, and has a contact terminal structure of a battery box which prevents rattling and lateral displacement of a battery and has high use durability. It is to gain.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a receiving member having a receiving space for receiving a protruding portion of an anode terminal of a battery, and a coil having a contact end at one end radially bent inward in a wound direction. In the contact terminal structure of a battery box, a spring-shaped conductive wire having elasticity is coupled to a receiving space of the receiving member such that a contact end on one end side of the conductive wire is located. The receiving member has a substantially cylindrical shape, and a coil portion on one end side of the conductive wire is wound around the outer peripheral surface, and a concave groove for tightening is formed around the coil,
A solution to this problem is that a notch is formed in a peripheral wall of the receiving member so that a contact end on one end side of the conductive wire can be inserted into the receiving space inside the receiving member.

[0007]

The substantially cylindrical receiving member fits the projecting portion of the battery anode terminal into the receiving space, and the projecting portion (battery anode)
Has the effect of preventing the radially outward deviation of. Also,
The coil formed at one end of the conductive wire is wound around the concave groove formed on the outer peripheral surface of the receiving member, and has an effect of preventing the receiving member from detaching from the conductive wire by being tightened.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below based on embodiments shown in the drawings.

1 to 4 show this embodiment. FIG. 1 is a perspective view showing the entire contact terminal structure of the present embodiment. In the figure, reference numeral 10 denotes a contact terminal of the battery box, which comprises an anode terminal portion 11 and a cathode terminal portion 12. The present invention relates to a contact terminal configuration of the anode terminal portion 11.

The anode terminal portion 11 includes a coil spring-shaped conductive wire 13 and a substantially cylindrical receiving member 14. The conductive wire 13 has elasticity, and its free end is bent toward the coil inside in the coil winding radial direction to form a contact end 13A.

The receiving member 14 is formed of an insulating material, for example, a resin material. On the outer peripheral wall of the receiving member 14, a concave groove 14a is formed along the circumferential direction.
A flange 14b protruding outward is formed at the upper portion of 4a to form a flange, and a bulging portion 14c bulging outward is formed at a lower portion of the concave groove 14a. Further, one notch 14d cut out upward from the lower end edge is formed in the lower portion of the peripheral wall of the receiving member 14. The width dimension of the notch 14d is
Is slightly longer than the radial direction. Also, the receiving member 14
As shown in FIG. 4, a cylindrical hole 14e penetrating through in the axial direction is a receiving space in which the anode terminal 15A of the battery 15 is fitted, and the inner diameter of the cylindrical hole 14e is slightly longer than the diameter of the anode terminal 15A. At the same time, the upper peripheral wall of the opening of the cylindrical hole 14e has a tapered portion 14f so that the anode terminal 15A of the battery 15 can be easily guided into the receiving space.

As shown in FIG. 4, the conductive wire 13 and the receiving member 14 are assembled by inserting the contact end 13A of the conductive wire 13 into the notch 14d of the receiving member 14 as shown in FIG. The recessed groove 14 of the receiving member 14 engages the distal end coil portion 13B of the conductive wire 13 circling from the bent portion 13A.
a, and a tight coupling structure is obtained by tightening with the tip coil portion 13b. In order to tighten the distal end coil portion 13B in the concave groove 14a in this way, when forming the coil spring-shaped conductive wire 13 in advance, the diameter of the distal end coil portion 13B is set to be shorter than the diameter of the concave groove 14a. You should keep it. FIG. 3 shows the conductive wire 1
FIG. 5 is a side view showing a state where the receiving member 3 and the receiving member 14 are assembled.

Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various design changes are possible.

For example, as shown in a modified example shown in FIG. 5, the receiving member 14 may be formed as a bottomed cylindrical body, and a cutout 14d may be formed in a side wall.

In the above embodiment, the contact terminal 10 has been described as an example in which the anode terminal portion 11 and the cathode terminal portion 12 are integrally formed. However, the present invention is applied to a contact terminal including only the anode terminal portion 11. Alternatively, the present invention may be applied to a contact terminal having a large number of terminal portions.

[0016]

As is apparent from the above description, according to the present invention, it is possible to prevent rattling and lateral displacement of the battery, and to increase the durability in use.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention.

FIG. 2 is a perspective view showing a receiving member according to the embodiment of the present invention.

FIG. 3 is a side view of the embodiment according to the present invention.

FIG. 4 is a partial cross-sectional view showing a use state of the embodiment according to the present invention.

FIG. 5 is a perspective view showing a modification of the present invention.

FIG. 6 is an exploded perspective view of a conventional example.

FIG. 7 is a sectional view showing a use state of a conventional example.

[Explanation of symbols]

10 contact terminal, 13 conductive wire, 13A contact end, 1
3B: tip coil portion, 14: receiving member, 14a: concave groove,
14d: Notch, 15: Battery, 15A: Anode terminal.

Claims (1)

(57) [Scope of request for utility model registration] 1. A receiving member having a receiving space for receiving a protruding portion of an anode terminal of a battery, and a coil spring-shaped resilient conductive wire having a contact end on one end side bent inward in a radial direction. And a contact terminal structure of the battery box, wherein the receiving member has a substantially cylindrical shape, in a receiving space of the receiving member, so that a contact end on one end side of the conductive wire is located. A coil portion on one end side of the conductive wire is wound around the outer peripheral surface to form a groove for tightening, and a contact end portion on one end side of the conductive wire is formed on a peripheral wall of the receiving member inside the receiving member. A notch which can be inserted into said receiving space.