JPH0424741Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a junction block for a wire harness (hereinafter simply referred to as a junction block) that is installed in the middle part of a wire harness installed in an automobile, etc. More specifically, it relates to the locking structure of the cover in the juncture block.

``Prior art'' In general, a junction block is locked by covering the junction block body (hereinafter simply referred to as the body), which centrally houses branch circuits using fuses and bus bars, and the cover can be removed when necessary. As shown in Fig. 3, the cover lock structure has a base fixed to the side wall of the main body 2, and a tongue-like piece that stands parallel to the side wall of the main body 2 with a gap 7 in between. Consisting of a locking piece 4 of a thin plate spring body and a locking claw 3 protruding downward from the side wall of the cover 1, the locking claw 3 is inserted into the gap 7 between the locking piece 4 and the main body 2, and the locking A structure in which the claw 3 is fitted into the locking hole 5 of the locking piece 4 to lock the cover 1 onto the main body 2 is often used.

``Problems to be solved by the invention'' According to the conventional structure described above, when the cover 1 is covered and locked onto the main body 2, it is necessary to accurately determine the relative position of the cover 1 and the main body 2 both in the front, back, left and right directions. At the same time, the locking claw 3 is located at a step 6 on the peripheral wall of the main body 2.
(a step formed on the main body 2 to receive the lower end of the cover 1).
Covering workability is unfavorable, and in addition, cover 1
When removing the cover 1, it is necessary to pull the upper end of the locking piece 4 outward with one hand and simultaneously pull up the cover 1 with the other hand. There are disadvantages such as damage to the

The purpose of the present invention is to solve the above-mentioned conventional difficulties.

``Means for Solving the Problems'' That is, the present invention is ``means to engage the locking hole of the tongue-like locking piece provided on the peripheral wall of the juncture block body with the locking claw provided on the peripheral wall of the cover. In the junction block that locks the cover by
The locking pawl is provided with a bulge at the center of the lower end of the locking plate, and the locking plate is provided with guide ridges in the vertical direction for receiving and guiding the left and right side edges of the locking piece. The lower end of the guide ridge is formed into a tapered guide slope whose slope faces the peripheral wall of the juncture block body and whose terminal end is at the same position or below the lower end of the locking pawl, and further includes: A gap for receiving the locking plate is provided between the locking piece and the peripheral wall of the juncture block main body.

"Example" and "Operation" Hereinafter, a detailed explanation will be given based on an example. Referring to FIGS. 1 and 2 showing one embodiment, a side wall 8 of the main body 2 has a base fixed to the main body 2 and extending upwardly in the form of a cantilever, and a space 7 between the side wall 8 and the side wall 8. A tongue-shaped locking piece 4 made of a metal thin plate spring body is provided upright, and a locking hole 5 is bored in the center of the locking piece 4. A locking plate 10 is formed on the side wall 9 of the cover 1, and is bored downward from the lower edge 9' of the side wall 9. At the lower center end of the locking plate 10, a locking plate 10 is formed.
When the cover 1 is properly attached to the main body 2, a locking pawl 3 is provided which fits into the locking hole 5 of the locking piece 4 in a non-returning manner. A pair of guide ridges 11A and 11B are provided in the vertical direction to sandwich and receive both side edges of the locking piece 4 when the cover 1 is attached to the main body 2. The lower ends of the guide ridges 11A and 11B are formed into a tapered guide slope 13 whose slope faces the main body 2, and the terminal end 13' of the guide slope 13 is connected to the lower end 3' of the locking pawl 3. It is located at the same position or below the lower end 3' of the locking claw 3.

Then, when the above cover 1 is attached to the main body 2, the locking plate 10 of the cover 1 is inserted into the gap 7 on the side of the main body 2, and the locking claw 3 is fitted into the locking hole 5 of the locking piece 4. In addition, the guide ridges 11A, 11 of the locking plate 10
B receives both side edges of the locking piece 4, so that the cover 1 is covered and locked onto the main body 2.

According to the junction block of the present invention having the above structure, when the cover 1 is attached to the main body 2, the guide ridges 11A and 11B provided on both sides of the locking pawl 3 sandwich the locking piece 4 of the main body 2. In addition, the lower ends of the guide ridges 11A and 11B are provided with tapered guide slopes 13 whose slopes face the main body 2, so that even if the main body 2 has a protruding part such as a step 6, ,
The locking pawl 3 does not interfere with the step 6, etc., and the locking pawl 3 can be smoothly slid into the gap 7 of the main body 2, and the locking pawl 3 and the locking hole 5 can be fitted and locked. Therefore, the work of covering the cover 1 becomes extremely easy.

When removing the cover 1, as shown in FIG. acts as the center of rotation,
The locking piece 4 is secured by the locking plate 10 of the rotated cover 1.
is forcibly displaced outward and the engagement between the locking pawl 3 and the locking hole 5 is released, and at the same time, a component force is generated to push up the locking plate 10 due to the flexural reaction force of the locking piece 4. The cover 1 rises upward semi-automatically, and the removal operation of the cover 1 can be performed extremely easily and accurately with one hand.

``Effects of the Invention'' As described above, the junction block of the present invention has the practical effect of making the operation of attaching and detaching the cover 1 extremely simple and accurate, and improving the workability and reliability of opening and closing the cover.

[Brief explanation of the drawing]

Fig. 1: Shows a juncture block according to an embodiment of the present invention, A is a perspective view thereof, B is an enlarged front view showing the locking structure of the cover, Fig. 2: Fig. 1
FIG. 3 is a front view showing the operation of the embodiment; FIG. 3 is a front view showing the cover lock structure of the conventional junction block; Main symbols: 1...cover, 2...junction block body, 3...locking claw, 4...locking piece,
5... Locking hole, 6... Step, 7... Gap, 10...
...Locking plate, 11A, 11B...Guiding ridge, 13...
...Guiding slope.

Claims (1)

[Scope of utility model registration request] In a juncture block in which a locking hole of a tongue-shaped locking piece provided on the peripheral wall of the juncture block body is engaged with a locking claw provided on the peripheral wall of the cover to lock the cover, the locking The pawl is raised at the center of the lower end of the locking plate, and the locking plate is provided with a pair of guide ridges for receiving the left and right side edges of the locking piece, and the lower end of the guide ridge is The slope faces the peripheral wall of the juncture block body,
and is formed in a tapered guide slope whose terminal end is at the same position as or below the lower end of the locking pawl,
Furthermore, a junction block for a wire harness is characterized in that a gap is provided between the locking piece and the peripheral wall of the junction block main body to receive the locking plate.