JPS5821480Y2 - Electrical connectors for battery electrodes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an electrical connector for battery electrodes made of a conductive metal plate.

Electric connectors for battery electrodes manufactured by punching and bending conductive metal plates instead of lead castings are disclosed in Japanese Patent Publication No. 46-8915 and Japanese Utility Model Publication No. 51-192.
The one shown in Publication No. 36 is publicly known.

One of these known techniques includes forming a contact plate portion with an aperture that engages a battery electrode with a slot communicating with the aperture;
The contact pressure against the battery electrode in the opening is obtained by tightening and deforming the contact plate in the groove, but the contact plate is held flat against the flat surface of the plate with a large elastic modulus. Since the deformation is attempted in the opposite direction, a relatively large tightening force is required, and the tightening has drawbacks such as the tendency to cause permanent deformation of the aperture.

Another known technique is to form the electrode gripping portion of the electrical connector into a substantially cylindrical shape, and to provide a flange portion on the electrode gripping portion so that the electrical connector can be easily removed from the battery electrode when replacing the battery. Although the repulsion force can be used effectively when removing the connector, a larger tightening force is sometimes required to tighten it, and it also applies to the electrical connector. External forces can cause the electrical connector to rotate relative to the battery electrode or be pulled out of the battery electrode, easily damaging a good electrical connection.Furthermore, during manufacturing, the electrode grip part must be bent. It has the disadvantage that it is difficult to form a shape that matches the outer peripheral surface of the battery electrode.

The present invention was developed in view of the above points, and is a conductive metal plate that allows good electrical connection with battery electrodes to be obtained with a relatively small tightening force, and that does not cause connection failure due to external force. An object of the present invention is to provide an electrical connector for battery electrodes consisting of:

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the electrical connector 1 is integrally formed by punching and bending a conductive metal plate, and has a wire connecting portion 2 on the negative side and an electrode gripping portion 3 on the other side. ing.

Reference numeral 4 denotes a central substrate portion that connects the wire connecting portion 2 and the electrode gripping portion 3, and the substrate portion is provided with an insertion hole 5 for a tightening bolt.

Further, reinforcing bent portions 6 are provided on the upper and lower sides thereof so as to rise from the substrate portion.

The wire connecting portion 2 is formed into a substantially U-shape, and is adapted to connect the conductor of the battery cable by crimping, as shown in FIG.

The electrode gripping part 3 is formed into a substantially cylindrical shape that is tapered so as to match the outer peripheral surface of the truncated conical battery electrode when the electrical connector 1 is tightened and fixed to the battery electrode.
A plurality of grooves 7 are provided on the inner peripheral surface of the electrode gripping portion in the longitudinal direction of the battery electrode.

Further, a slit 8 is provided in a direction perpendicular to the groove 7, passing through the midsection of the electrode gripping portion.

The provision of the grooves 7 and slits 8 is the key point of the present invention.

In order to facilitate the removal of the electrical connector from the battery electrode, it is preferable that the electrode gripping part 3 is provided with a flange part 9 to provide an appropriate repulsive force, but this is not the point of the present invention.

Reference numeral 10 denotes a tightening plate portion extending from the electrode gripping portion 3, and the tightening base portion is formed to face the substrate portion 4,
Further, an insertion hole 11 is provided so as to coincide with the insertion hole 5 of the tightening bolt.

Reference numeral 12 denotes reinforcing bent portions formed on the upper and lower sides of the tightening plate portion 10, which are also used to prevent rotation of the tightening nut.

Some of the bent portions 6 and 12 can be omitted.

Figure 4 shows the state of use, where 13 is the battery body, 1
4 is a battery electrode, 15 is a battery cable connected to the electrical connector 1, and 16 and 17 are bolts and nuts for tightening.

To attach the electrical connector 1 to the battery electrode 14, first insert the bolt 16 into the tightening bolt insertion holes 5 and 11,
After temporarily fastening with the nut 17, fit the electrode grip part 3 tightly to the battery electrode 14, and then tighten the bolt and nut l-16.
, 17 to fix the tightening.

FIG. 5 is a diagram showing the state of engagement between the battery electrode and the electrode gripping portion.

As shown in the figure, the groove 7 of the electrode gripping part 3 is formed so that when the electrical connector 1 is tightened to the battery electrode 14, the groove 7 of the electrode gripping part 3
into the outer peripheral surface of the electrical connector 1 and the battery electrode 1.
This is effective in obtaining a good electrical connection with 4.

Furthermore, since the groove 7 is provided in the longitudinal direction of the battery electrode 14, even if a force that rotates the electrical connector is applied to the battery electrode, it is possible to effectively prevent the electrical connector from slipping. Unlike the conventional method, there is no possibility of loosening of electrical connectors or connection failures caused by this.

On the other hand, when the electrical connector 1 is fastened to the battery electrode 14, the corner 8a of the slit 8 of the electrode gripping part 3 bites into the battery electrode 14, and in combination with the biting of the groove 7, the electrical connection is made even better. .

Furthermore, since the slit 8 is provided perpendicular to the longitudinal direction of the battery electrode 14, it is possible to effectively prevent the electrical connector from being removed from the battery electrode.

In addition, since a slit is provided in the wide electrode gripping part, whereas conventional electrical connectors require a large clamping force, the electrical connector of the present invention can be tightened with a relatively small clamping force. can.

Even though the tightening force is small, the battery electrode and the electrical connector contact over a wide range in the longitudinal direction of the battery electrode, so even if the surface of the battery electrode is irregular, localized overheating can occur. can be avoided.

Furthermore, by providing the slit 8, the electrode gripping part 3 can be easily bent, and the electrode gripping part can be formed into a desired shape that matches the outer peripheral surface of the battery electrode.

As explained above, the electrical connector according to the present invention has a plurality of grooves in the longitudinal direction of the battery electrode on the inner circumferential surface of the electrode gripping part, and a slit extending in a direction perpendicular to the grooves and passing through the electrode gripping part. As a result, a good electrical connection with the battery electrode can be obtained with a relatively small tightening force, and a reliable fixation that will not loosen due to external force can be achieved. The difficulty of can be solved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of an electrical connector according to the present invention;
2 is a plan view of the same, FIG. 3 is a front view of the same, FIG. 4 is a perspective view showing a state of use, and FIG. 5 is a sectional view showing a state of engagement between a battery electrode and an electrode gripping portion. DESCRIPTION OF SYMBOLS 1...Electrical connector, 2...Wire connection part, 3...Electrode grip part, 4...Base part,
7...Groove, 8...Slit, 10...
...Tightening plate part, 14...Battery electrode.

Claims (1)

[Scope of utility model registration request] It is made of a conductive metal plate, and includes a central board part, a wire connection part formed on one side of the board part, an electrode grip part formed in a substantially cylindrical shape on the other side of the board part, and an extension from the electrode grip part. and a clamping plate portion formed to face the substrate portion, and a plurality of grooves are provided in the inner circumferential surface of the electrode gripping portion in the longitudinal direction of the battery electrode, and further perpendicular to the grooves. An electrical connector for a battery electrode, characterized in that a slit in the direction is provided to penetrate the electrode gripping part.