JPH0145101Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a terminal cover that protects a tab terminal and is engaged and locked therewith.

[Conventional technology]

Terminal boxes such as fuse blocks and junction blocks are generally equipped with a cover to protect the tab terminal and prevent incorrect insertion, and are provided with a locking means to prevent it from falling out.

To explain this more specifically with reference to drawings, in FIG. 6, a is a terminal box, b is its cover, and box a is provided with a peripheral wall d surrounding a plurality of tab terminals c protruding from the surface thereof. There is. The cover b has a lock arm f provided with a lock pawl e, and a peripheral wall d corresponding to the arm f.
A locking groove g is formed in a bulging manner to lock the box a and the cover b and prevent them from falling off.
Further, the cover b has a positioning protrusion h on its outer periphery, and a guide groove j is provided on the peripheral wall d.

When the above-mentioned cover b is not connected to a wire harness connector, etc., it is locked by fitting its lock arm f and protrusion h into grooves g and j, but the cover itself has a complicated shape, and its exterior In addition, since it has a locking means such as a lock arm f, it becomes large in size, and the shape of the box surrounding wall d to which it is fitted also becomes complicated and large.

[Problem that the invention attempts to solve]

An object of the present invention is to solve the above-mentioned problems and provide a terminal cover that is simple in structure, suitable for reduction in size and weight, and that can reliably prevent the terminal cover from falling off from the terminal box.

[Means to solve the problem]

In order to achieve the above purpose, in this invention,
A terminal cover is attached to a pair of tab terminals that protrude from a terminal box such as a fuse block in a state where they face each other with a gap between them, and a U-shape is formed inside the terminal cover at a position corresponding to the gap. The present invention is characterized in that a pair of elastic retaining plates are provided facing each other via the connecting base, and the elastic retaining plates are provided with a locking protrusion that engages with the tab terminal.

[Effect]

In the terminal cover of the present invention, an elastic retaining plate (retaining wall) provided inside the terminal cover is bent by the entry of the tab terminal, and the corresponding hole or recess of the terminal is formed into a locking protrusion of the retaining plate (retaining wall). When it reaches this point, it returns elastically, and the locking protrusion engages with the hole or recess, and they are locked together. That is, the terminal cover directly engages and locks the tab terminal.

As a result, the peripheral wall d, lock arm f, lock groove g, etc. that surround the conventional tab terminal are no longer required, so the structure of the terminal box and terminal cover is simplified and can be made smaller and lighter, contributing to cost reduction. do.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIGS. 1 to 4, reference numeral 1 denotes a fuse block, a junction block, etc.; Two rows of tab terminals 4 protrude in parallel, facing each other with a gap between them. The hole 3 may be formed as a recess by stamping or the like.

Reference numeral 5 denotes a terminal cover made of plastic, and has an accommodating portion 6 therein for accommodating four groups of tab terminals facing each other. In this storage chamber 6, there are two terminal holding chambers 7 at appropriate intervals as shown in the figure.
The chamber 7 is provided with a pair of holding plates 9 facing each other with a U-shaped connecting base 8 interposed therebetween. The holding plate 9 is formed to have elasticity, and has the holes 3 on its outer surface.
A locking protrusion 10 is provided to protrude and engage with. Locking protrusion 1
The shape of the tab terminal 0 is a hemispherical shape in the illustrated example, but it may be in the shape of an inverted triangular hook or the like as long as it can fit into the hole 3 and lock the tab terminal. In addition, 11 is a terminal approach path between the holding plate 9 and the inner wall of the cover, and 12 is a cavity having a bottom part 13. By changing the formation position of this cavity 12, the terminal cover to be attached can be selectively used. .

5A to 5C show the operating state of the terminal cover 5. That is, when the cover 5 is attached to the terminal box 1, the tab terminal 4 is attached to the approach path 1.
1 along the retaining plate 9 (A), and locking protrusion 10
The holding plate 9 is elastically bent inward by contacting the holding plate 9 (b). Proceeding further, when the hole 3 reaches the locking protrusion 10, the holding plate 9 elastically returns, the protrusion 10 engages with the hole 3, and both are locked. Locking protrusion 10
If it is hemispherical as shown, the cover 5 is removable.

[Effect of idea]

As described above, the present invention provides a terminal cover that is attached to a pair of tab terminals that protrude from a terminal box such as a fuse block in a state where they face each other with a space between them. A pair of elastic retaining plates facing each other via a U-shaped connecting base are provided at positions corresponding to the U-shaped connecting base, and a locking protrusion that engages with the tab terminal is provided on the elastic retaining plates. To reduce the size and weight of a terminal cover by manufacturing a terminal cover with a simple structure in which a locking mechanism can be provided by utilizing the idle space inside the terminal to protect the tab terminal and prevent it from falling off. be able to.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the cover of the present invention, Fig. 2 is a top view thereof, and Fig. 3 is a -
A line sectional view, FIG. 4 is a - line sectional view of FIG. 2,
Figures 5A to 5C are cross-sectional views showing the operating state, and Figure 6
The figure is a perspective view of a conventional example. 1... Fuse box, 3... Hole, 4... Tab terminal, 5, 5'... Terminal cover,
7... Terminal holding chamber, 9... Holding plate, 9'...
...retaining wall, 10...locking protrusion.

Claims (1)

[Scope of utility model registration request] A terminal cover is attached to a pair of tab terminals that protrude from a terminal box such as a fuse block in a state where they face each other with a gap between them, and a U-shape is formed inside the terminal cover at a position corresponding to the gap. 1. A terminal cover comprising: a pair of elastic retaining plates facing each other via a connecting base; and a locking protrusion that engages with the tab terminal on the elastic retaining plates.