JPH03230472A - Battery contact - Google Patents

Abstract

PURPOSE:To prevent the reverse connection of a battery and simplify the assembling work by providing a coil spring which crosses nearly the center section in contact with a positive electrode and forms a coupling bent section coupled with an insulating member, and constituting a battery contact with only the coil spring and the insulating member. CONSTITUTION:A coil spring 7 and an insulating member 8 are coupled via a one-end section 7a, a coupling projection 8c, and a coupling groove 8d to form a battery contact. The positive electrode 3a of a battery 3 passes the insertion hole 8a of the insulating member 8, the wire rod of the one-end section 7a of the coil spring 7 crosses the center section of the winding kept in contact with the positive electrode 3a, and the electric contact state can be formed via the wire rod crossing the center section. The negative electrode 3b of the battery 3 is brought into contact with the contact face 8b of the insulating member 8 and can not pass the one-end section 7a side of the coil spring 7, thus no electrical contact state is formed, and reverse connection can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a battery contact for preventing reverse connection of batteries used in equipment using batteries.

BACKGROUND OF THE INVENTION Conventionally, battery contacts for preventing reverse connection of batteries are shown in FIG. 4(a), (b), (c) or FIG. 5(a).
), (b), and (c) have been put into practical use.

As is clear from the exploded perspective view of FIG. 4(a), the battery contact shown in FIG. 2, and is completed as shown in the perspective view shown in FIG. 2(b). As is clear from the sectional view of the operating state shown in 11i9(c), the leaf spring 1 contacts only the positive electrode 3a of the battery 3, that is, the negative electrode 3b of the battery 3 contacts the insulating member 2. This abutment prevents contact with the leaf spring 1, thereby preventing reverse connection of the battery 3.

As is clear from the exploded perspective view of FIG. 5(a), the battery contact shown in FIG.
A sheet metal 5 formed by a cutting die and a drawing die engaged with the
Furthermore, it is composed of an insulating member 6 that is engaged with the sheet metal 5, and includes a caulking portion 5a of the sheet metal 5 and one end portion 4a of the coil spring 4.
After caulking, the protrusion 5b of the sheet metal 5 and the engaging portion 6a of the insulating member 6 are fitted together, thereby completing the structure as shown in the perspective view shown in FIG. 5(b). Similarly to the example shown in FIG. 4, as is clear from the sectional view of the used state shown in FIG. By coming into contact with the insulating member 6, the negative electrode 3b is prevented from coming into contact with the sheet metal 5, and therefore, reverse connection of the battery 3 is prevented.

Problems to be Solved by the Invention As mentioned above, the conventional example shown in Figs. 4 and 5 can prevent reverse connection of batteries, but a detailed study of its structure shows that it still has problems. It has the following problems.

In other words, in the conventional example described above, since the leaf spring 1 and the sheet metal 5 are used, it is necessary to prepare a special mold for forming them, which has the problem of increasing the cost of the battery contact. are doing.

Furthermore, the conventional example shown in FIG. 5 requires mechanical and electrical connection between the coil spring 4 and the sheet metal 5, and has the problem of increasing costs due to increased assembly work.

The present invention was made in consideration of the above-mentioned problems, and an object of the present invention is to provide a battery contact that does not use a leaf spring or the like that requires a special mold, and that can simplify assembly work and reduce costs. shall be.

Means for Solving the Problems A battery contact according to the present invention is formed by winding a wire, at one end of which the wire crosses approximately the center of the winding, and has a plurality of locking bends. a coil spring formed as shown in FIG.
It is composed of an insulating member that controls the positional relationship between the coil spring and the battery.

Function: Since the battery contact according to the present invention has the above-described configuration, electrical connection with only the positive electrode of the battery can be established by simply engaging the coil spring and the insulating member using the locking bent portion and the engaging means. Contact will be possible.

That is, there is no need to use a sheet metal or the like that requires a special mold, and the assembly work is also simplified, which is extremely advantageous in reducing costs.

EXAMPLES Hereinafter, examples of battery contacts according to the present invention will be described.

FIG. 1 is an exploded perspective view showing an embodiment of a battery contact according to the present invention, and FIG. 2 is a perspective view of the same embodiment.

As is clear from FIGS. 1 and 2, the battery contact according to the present invention does not have a metal plate 5 and is insulated from the coil spring 7, unlike the conventional example shown in FIG. It is composed of only member 8.

The coil spring 7 is formed by winding a suitable wire, and in this embodiment, the wire crosses the winding center O at one end 7a, and has a plurality of locking bends,
For example, the locking bent portion 7b.

It is formed by molding the above-mentioned wire material so as to have a substantially S-shape having 7C.

In addition to the above-mentioned substantially S-shape, the shape of the one end portion 7a is
For example, although not shown, it goes without saying that various shapes such as the number 3 or the shape of a sea star can be adopted, and the position where the wire crosses the end portion 7a does not have to be exactly at the center of the winding. There is no problem as long as it is in a position where it can be contacted, and it is needless to elaborate that it may be formed, for example, so as to cross approximately the center of the winding where it can come into contact with the positive electrode of the battery. .

The insulating member 8 in this embodiment includes, for example, an insertion hole 8a through which the positive electrode of a battery (not shown) passes, and a contact surface 8b that abuts against the negative electrode of the battery to prevent the passage thereof, that is, it has a substantially cylindrical shape, and furthermore, One end 7 of the coil spring 7
For example, as shown in the figure, an appropriate engagement protrusion 8c that contacts and locks the above-mentioned locking bends 7b, 7c is inserted into the locking bends 7b, 7c so that the locking bends 7b, 7c can be directly engaged with the locking bends 7b, 7c. It is formed with an engaging means consisting of an engaging groove 8d.

The battery contact according to the present invention includes the coil spring 7 and the insulating member 8, the above-mentioned one end 7a, the engagement protrusion 8C1 and the engagement groove 8d.
By engaging with each other through , it is completed as shown in Fig. 1. In this embodiment, the locking bent portions 7b and 7C of the one end 7a are connected to the engaging groove 8d by the engaging protrusion 8C.
It is needless to mention in detail that the engagement is achieved by abutting and fitting into the coil spring 7, that is, by utilizing the elastic force of the coil spring 7.

On the other hand, the relationship between the battery contact and the battery electrode according to the present invention is as follows:
As is clear from the sectional view shown in FIG. 3 for explaining the state of use, the positive electrode 3a of the battery 3 passes through the insertion hole 8a of the insulating member 8, and the coil spring 7 As described above, the wire at one end 7a crosses approximately the center of the winding where it can come into contact with the positive electrode 3a.

A relationship is established in which electrical contact can be formed via a wire rod that crosses this approximately central portion.

However, an electrical contact state is formed with the negative electrode 3b of the battery 3 because the negative electrode 3b contacts the contact surface 8b of the insulating member 8 and cannot pass through to the one end 7a side of the coil spring 7 described above. There isn't.

That is, the battery contact according to the present invention can reliably prevent reverse connection of the battery, as in the conventional example described above.

Effects of the Invention The battery contact according to the present invention has a coil spring having a structure at one end that is provided with an engaging bent part that traverses a substantially central part that can contact the positive electrode of the battery and that engages with an insulating member. Consisting only of coil springs and insulating materials, it not only prevents reverse connection of the battery, but also reduces the number of parts, which simplifies assembly work. Also, since no sheet metal is used, mold costs can be reduced. As a result, it has the effect of being able to be manufactured at extremely low cost, in other words, it has the effect of significantly reducing costs.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the battery contact according to the present invention, FIG. 2 is a perspective view of the same embodiment, FIG. 3 is a sectional view for explaining the usage state of the embodiment, and FIG. Figures (a), (b)
), (c) and FIGS. 5(a), (b), and (C) show conventional examples of battery contacts that prevent reverse connection of batteries.
(a) is an exploded perspective view, (b) is a completed perspective view, and (C) is a sectional view for explaining the state of use.

Claims (3)

[Claims] (1) A coil spring formed by winding a wire rod, the wire rod crossing approximately the center of the winding at one end thereof, and having a plurality of locking bent portions; A battery contact comprising an engaging means that engages with a locking bent portion of the coil spring, and an insulating member that is engaged with the one end and controls the positional relationship between the coil spring and the battery. (2) a coil spring formed of a wire and having a structure that crosses approximately the center of one end so as to be able to contact the positive electrode of the battery; and a coil spring that is engaged with the one end and allows the positive electrode of the battery to pass through; A battery contact that prevents reverse connection of the battery, comprising an insulating member that prevents the negative electrode of the battery from passing through by coming into contact with it. (3) The engagement means includes an engagement groove into which the locking bent portion of the coil spring is inserted and an engagement protrusion that abuts the locking bent portion, and the engagement between the coil spring and the insulating member is caused by the engagement of the coil spring with the insulating member. The battery contact according to claim 1, which is made using elastic force.