JPS6033578Y2 - Device to prevent rattling of terminals in connectors - Google Patents

Description

[Detailed description of the invention] The present invention is aimed at preventing rattling of the terminals in connectors, particularly in connectors in which a housing houses a fuse terminal formed by connecting the top ends of a pair of opposing female terminals with a fusible conductor. Regarding equipment.

Conventionally, in this type of connector, a lance C cut and raised from a female terminal constituting a fuse terminal a is press-fitted and engaged with a locking step e protruding from the inner wall of a housing d, as shown in Fig. 1A. To prevent the terminal from coming out, a locking plate f is formed on the female terminal like a mouth, and the locking plate f is press-fitted into a groove g recessed in the inner wall of the housing to prevent the terminal from wobbling. It has been proposed that

However, especially in the case of the above-mentioned opening, a locking piece larger than the width of the terminal is required, which causes problems such as an increase in the size of the housing and a need for a special press-fitting jig.

The present invention has been developed with the above points in mind, and its purpose is to provide a connector that is easy to insert into a housing and that can reliably prevent rattling of the terminals and the abnormal noise caused by this. There is something to do.

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

In FIG. 2, reference numeral 1 denotes a fuse terminal, and the top ends of a pair of female terminals 2, 2 facing each other are connected by a fusible conductor 3.

The female terminal 2 is provided with elastic clamping arms 2c on both sides of a base plate 2a formed by cutting and raising a lance 2b to form an electrical contact part 2□ for a tab-shaped male terminal (not shown), and is attached to the top end of the base plate 2a. A fusible conductor connection portion 2□ is formed.

Reference numeral 4 designates a housing made of synthetic resin, in which a fusible conductor housing chamber 41 for the fuse terminal 3 is formed in the upper part, and two housing chambers 4° for the electrical contact portion 21 of the female terminal 2 are formed in the lower part.

A locking step portion 4b for locking the lance 2b is protruded from the inner wall 4a of the storage chamber 4□.

5 is a transparent cover for the housing 4.

The above structure is the same as the conventional one, and when the electrical contact part 21 of the female terminal 2 is inserted into the housing chamber 4□, the lance 2b engages with the locking step part 4b, as shown in FIG. Although extraction is prevented, the present invention has the following configuration.

That is, the fusible conductor connection part 2□ and the electrical contact part 2□ of the female terminal 2
A U-shaped frame piece 2d is provided between the two, and a spacer 6 is also provided.

This spacer 6 has an insertion groove 6b for the frame piece 2d formed at both ends of a rectangular plate 6a, and an inverted square or semicircular slit 6C formed at the longitudinal side edge.

Although the slits 6c are provided on both sides in the illustrated example, one side may be omitted.

And, corresponding to the slit 6, c of this spacer 6,
A protrusion 4d is vertically provided on the inner wall 4c of the fusible conductor storage chamber 41 of the housing 4, and a guiding slope 4dt is formed in the upper half of the protrusion 4d.

Although the spacer 6 may be made of the same material as the housing 4, it is preferably made of a harder material with insulating properties such as a harder synthetic resin or ceramics.

Also, the dimension between the protrusions 4d and 4d is 1. is made slightly larger than the dimension 1□ between the slits 6c and 6c of the spacer 6, as shown in FIG.

Next, assembly of the fuse terminal 1 and insertion into the housing 4 will be explained.

First, insert the frame pieces 2d of the female terminals 2 into the insertion holes i6b on both sides of the spacer 6, temporarily fasten the two female terminals 2, 2, and then insert the fusible into the fusible conductor connection part 2□ at the top end. The conductor 3 is joined by spot welding or the like, and the fuse terminal 1 is assembled.

Note that the fusible conductor 3 may be inserted after being inserted into the housing.

Next, the fuse terminal 1 is inserted through the slit 6c of the spacer 6 along the protrusion 4d on the inner wall of the housing.

In this case, since the guide slope 4d□ is formed in the front half of the protrusion 4d, it can enter very smoothly.

When the pressure is applied further, the resistance becomes large because the dimension 1□ between the protrusions 4d and 4d and the dimension 12 between the slits 6c and 6c are 11>1°, but the spacer 6 is made of a harder material than the protrusion 4d. Therefore, a part of the protrusion 4d is shaved off, and the spacer 6 is fixed to the fusible conductor 4□ with the protrusion 4d biting into the slit 6c.

As a result, the fuse terminal 1 is securely locked by the lance 2b and the spacer 6, as shown in FIG.
Since it is fixed, rattling of the terminal and generation of abnormal noise due to rattling are prevented.

As described above, the present invention provides a spacer for temporarily fixing the female terminal constituting the fuse terminal, a slit in the spacer, and an easy insertion into the slit in the inner wall of the housing. Sound generation can be reliably prevented.

Furthermore, since the female terminals can be temporarily fixed using the spacer, it becomes easy to determine the terminal pitch and to join the fusible conductor.

[Brief explanation of the drawing]

Fig. 1 A and A are explanatory diagrams of a conventional example, Fig. 2 is an exploded perspective view showing an embodiment of the present invention, and Fig. 3 is a spacer 6.
FIG. 4 is an explanatory diagram showing the mutual dimensions of the housing 4 and the fusible conductor accommodating chamber 4 □, and FIG. 4A and FIG. 1...Fuse terminal, 2...Female terminal,
3... Fusible conductor, 4... Fuse, 6
・・・・・・Spacer, 4d・・・Protrusion, 6c・
...Protrusion.

Claims (1)

[Scope of utility model registration request] A fuse terminal is formed by connecting the top ends of a pair of opposing female terminals with a fusible conductor, and a fusible conductor accommodating chamber for the fuse terminal is provided in the upper part of the interior, and a accommodating chamber for the electrical contact part of the female terminal is provided in the lower part of the interior. In the connector consisting of the formed housing, a U-shaped frame piece is provided between the fusible conductor connection part and the electrical contact part of the female terminal, and insertion grooves for the broken piece are formed at both ends, and the lengthwise direction A device for preventing rattling of a terminal in a connector, characterized in that a spacer is provided with a vertical slit on a side edge, and a protrusion corresponding to the slit is provided on the inner wall of the fusible conductor storage chamber of the housing. .