JP2601863Y2 - Lock structure of terminal connection nut - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connecting nut locking structure for connecting a pair of terminals, such as a fusible ring, mounted on an electric connection box with bolts.

[0002]

2. Description of the Related Art A conventional locking structure of a terminal connection nut is as follows.
As shown in the perspective view of FIG. 2, a terminal connection nut 4 is mounted on a pair of nut mounting grooves 3 formed back to back on an electric junction box main body 1 via a partition wall 2.
The structure is such that it is locked by locking projections 6 fixedly provided on both surfaces. In the fusible ring, terminals forming a pair are arranged on the pair of terminal connection nuts 4 and connected to the nuts 4 by fastening bolts (not shown).

[0003]

However, as shown in the longitudinal sectional view of FIG. 3, the locking projection 6 fixed when the nut 4 for terminal connection is passed through the partition wall 2 is required.
Need to be bent to the opposite side, which requires a lot of work for locking. Further, even if the partition wall 2 is bent, the locking projections 6 are rubbed against the terminal connection nuts 4 so that the nuts 4 are easily dropped off. Further, as shown in FIG.
The efficient method in which the nuts 4 are aligned back to back and locked at one time was not applicable because the locking projections 6 hindered.

[0004]

SUMMARY OF THE INVENTION The present invention provides a terminal connecting nut locking structure which solves the above problems.
The configuration is such that a pair of nut mounting grooves are formed back-to-back on the electrical junction box main body via a partition wall, and two terminal connection nuts mounted on each of the pair of nut mounting grooves are provided on both sides of the partition wall. In the locking structure of the terminal connection nut which is locked by the provided locking projections, the locking projections are provided in a lance shape recessed by an external force.

In the present invention, the lance-shaped locking projection is
Protruding from the partition wall and easily recessed by external force,
A projection that returns to its original shape when external force is removed, and has the same principle as, for example, a handbag clasp. The partition wall having the lance-shaped locking projection can be easily formed by injection molding. The partition wall is made of any elastic plastic material such as nylon resin.

[0006]

In the locking structure of the present invention, the locking projection of the partition wall is of a lance shape which is easily depressed by an external force. Therefore, when locking the nut for terminal connection, the locking projection moves with the movement of the nut. It is easily recessed, so that there is no need to bend the partition wall at the time of locking, and the locking operation is easy. Further, it is possible to insert the two nuts back to back and insert them at the same time, thereby improving the working efficiency. Also, the locking projection is not cut off by the nut, and the nut is reliably locked.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments. 1A to 1C are longitudinal sectional views showing an embodiment of the locking structure of the present invention. A pair of nut mounting grooves 3 formed back to back on the electrical junction box main body 1 with a partition wall 2 interposed therebetween
The terminal connection nuts 4 are inserted back to back. The partition wall 2 has an upper portion where the nut 4 is fixed,
The lance-shaped locking projections 5 are thinned by the thickness of the lance-shaped locking projections 5, and the lance-shaped locking projections 5 are provided from the boundary where the thickness changes to the thinner partition wall side (FIG. 1A). The nut 4
When the nut moves upward and comes into contact with the lance-shaped locking projection 5, the locking projection 5 is recessed (see FIG. 2B), and when the nut 4 passes over the locking projection 5, the locking projection 5 returns to its original shape. And the nut 4 is locked (FIG. 3C).

[0008]

As described above, in the locking structure of the present invention, the locking projection is provided in a lance shape recessed by external force.
The locking operation is easy, and the projections are not scraped during locking, so that the nut is prevented from falling off. Furthermore, two nuts can be locked at the same time, and the locking operation is made more efficient.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a locking structure according to the present invention.

FIG. 2 is a perspective view of a conventional locking structure.

FIG. 3 is an explanatory longitudinal sectional view of a conventional locking structure.

FIG. 4 is a perspective view of two nuts aligned back to back.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connection box main body 2 Partition wall 3 Nut mounting groove 4 Terminal connection nut 5 Lance-shaped locking projection 6 Fixed locking projection

Claims (1)

(57) [Scope of request for utility model registration] A pair of nut mounting grooves are formed back to back on an electric junction box main body via a partition wall, and two terminal connection nuts mounted in each of the pair of nut mounting grooves are connected to both sides of the partition wall. A locking structure for a terminal connection nut, wherein the locking protrusion is provided in a lance shape recessed by an external force.