JPH0228619Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jack plate provided with a jack on which terminals such as relays are mounted.

As a conventional example of a jack plate, there is one shown in FIGS. 1 and 2.

That is, a plurality of through holes 2 are formed in a honeycomb shape at predetermined intervals in a rectangular jack base plate 1. As shown in FIG. Elastic jacks 3 are inserted into each of these through holes 2, and a terminal (not shown) such as a relay is attached to one end of each of these jacks 3 (upper part in FIG. 1). A plug-in terminal (first terminal) for a lead wire (not shown) is attached to the other end (lower part in FIG. 1).

On the upper surface of the jack base plate 1 is a jack top plate 4.
A hole 5 is formed in the top plate 4 for the jack, corresponding to the through hole 2, into which a terminal such as a relay is inserted. In addition, the base plate for the jack 1
A pair of protrusions 6A and 6B are formed on the bottom of the terminal 6A and 6B in parallel to each other, and a terminal cover 7 is fitted between these protrusions 6A and 6B so as to be able to slide vertically in the vertical direction in FIG. This terminal cover 7 is formed with a lead wire insertion hole 8 corresponding to the through hole 2 and into which the insertion terminal is inserted.

In addition, protrusions 9 are formed on both side walls of the terminal cover 7, and by supporting the protrusions 9 with terminal cover holders 10 fixed to the jack base plate 1 with bolts 10A, the terminal cover 7 is formed. This prevents the jack from falling off the jack base plate 1.

11 is a lip formed on the top plate 4 for the jack to prevent the jack 3 from coming off upward in FIG. 1;
12 is a member that prevents the jack 3 from coming off downward in FIG. 1, 13 is a screw for sealing the lock position of a locking mechanism (not shown), and 14 is fixed to a guide rod and panel to facilitate relay insertion. It is a guide rod that acts as a screw.

By the way, when the plug-in terminal is attached to the jack 3, the terminal cover 7 is held in a predetermined position by the protrusions 6A and 6B so that the terminal cover 7 does not slide down and can be slid in the vertical direction in FIG. It is held by the frictional force of . By aligning the through holes 2 of the jack base plate 1 and the wiring insertion holes 8 of the terminal cover 7, it is possible to easily attach the plug-in terminals to the jack 3 and to check the quality of the connection. Makes confirmation easy. Furthermore, after inserting the plug-in terminal, by sliding the terminal cover 7 in the vertical direction in FIG. It is fixed to the inner wall of the hole 8 to prevent the plug-in terminal from coming off from the jack 3 even if the lead wire is accidentally pulled.

In such conventional jack boards, a synthetic resin with good insulation is used for the jack base plate 1 and the terminal cover 7, but the terminal cover 7 in particular is used to facilitate the installation of plug-in terminals. In view of the fact that flexibility is required for the lock mechanism and that a certain level of strength is required for the lock mechanism, vinyl chloride or nylon (polyamide) is used as the material.
However, since vinyl chloride and nylon have thermoplastic properties, the dimensions of the terminal cover 7 tend to be distorted, making it difficult to attach the terminal cover 7 between the protrusions 6A and 6B of the jack base plate 1, especially in high temperature and high humidity conditions. It was hot.

The present invention was developed in view of these conventional problems, and includes a protrusion that clamps the mounting portion of the jack base plate so that the terminal cover can slide freely in a predetermined direction along the surface of the jack base plate. A deformable portion is formed on the other end side of the jack base plate, and an elastically deformable deformable portion is formed on either the other end side of the jack base plate or the terminal cover side wall. On the other hand, a protrusion is formed in the protrusion by abutting the deformation part in a predetermined range in the sliding direction to elastically deform the deformation part and elastically urging the terminal cover on the protrusion.

The present invention will be explained below based on an embodiment shown in FIGS. 3 and 4. Incidentally, the same elements as those in the conventional example are given the same reference numerals as in FIGS. 1 and 2, and the explanation thereof will be omitted, and only the different parts will be explained.

In the figure, on the bottom of a jack base plate 20 into which the jack 3 is inserted, a pair of protrusions 6A and 6B are arranged side by side with a predetermined gap, as in the prior art. One protrusion 6B is formed with a protrusion 21 that protrudes toward the other protrusion 6A, and this protrusion 21 is formed in a tapered shape whose protrusion ratio gradually increases toward the jack base plate 1. There is.

Furthermore, an arch-shaped deformed portion 23 made of an elastic material is formed protrudingly on the side wall of the terminal cover 22, which is mounted between the pair of protrusions 6A and 6B, and faces the protrusion 21. The deformable portion 23 is formed to extend in the sliding direction of the terminal cover 22,
It comes into contact with the protrusion 21 in a predetermined range in the sliding direction and is elastically deformed by a predetermined amount, and this elastic force elastically urges the terminal cover 22 toward the protrusion 6A. Here, a pair of protrusions 6A,
The main body dimension of the terminal cover 22 in the longitudinal direction is formed to be slightly smaller than the distance between the inner walls 6B.

According to the jack board having such a structure, the terminal cover 22 is supported by the elastic force of the deformable portion 23 on the jack base plate 21, so the terminal cover 22 is made of thermoplastic vinyl chloride, nylon, etc. Even if the terminal cover 22 expands and contracts due to
The elongation of the terminal cover 22 in the longitudinal direction can be absorbed by the deformation of the deformable portion 23, thereby avoiding the problem that the terminal cover 22 cannot be attached to the jack base plate 20. Furthermore, since the deformable portion 23 extends in the sliding direction, even if the terminal cover 22 cannot be held between the protrusions 6A and 6B due to dimensional deviation, the deformable portion 23 and the protrusion 21 can be elastically engaged. Then attach the terminal cover 22 to the jack base plate 2.
Since the terminal cover 22 can be slid while being locked at 0, the first terminal of the jack can be efficiently fixed in the middle, and the terminal can be connected well.

As explained above, in the present invention, either the terminal cover or the jack base plate is provided with an elastically deformable deformable portion, and the other is provided with a protrusion that elastically deforms the deformable portion. Even if a dimensional error occurs, this dimensional error can be absorbed by the deformation of the deformable portion, so even if a thermoplastic material is selected, the terminal cover can be attached to the jack base plate. In addition, the terminal cover is held between the protruding parts of the jack base plate so that it can slide freely in a predetermined direction, and the deformed part and the protruding part are brought into contact within a predetermined range in the sliding direction, so that dimensional deviations can be avoided. Even when the terminal cover cannot be held between the protruding parts, the elastic engagement between the deformed part and the protruding part allows the terminal cover to slide while being locked to the jack base plate, thereby making it possible to secure the terminal cover to the jack base plate. connection can be improved.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional jack plate, FIG. 2 is a bottom view of the same, FIG. 3 is a front view of an embodiment of the present invention, and FIG. 4 is a bottom view of the same. 2...Through hole, 3...Jack, 6A, 6B...
... protrusion, 10 ... terminal cover holder, 20 ... jack base plate, 21 ... protrusion, 23 ... deformation part.

Claims (1)

[Scope of utility model registration request] The base plate for the jack has a plurality of through holes into which a jack is mounted, one end for connecting a terminal, and the other end for connecting a lead wire, and a lead wire insertion hole corresponding to the through hole. A jack plate comprising a terminal cover that is detachably held by a mounting portion on the other end side of the jack of a base plate, wherein the terminal cover is slidably held in a predetermined direction along the plate surface of the jack base plate. A protruding portion is formed on the other end of the jack base plate to constitute the mounting portion, and the protrusion is elastically deformed on either the other end side of the jack base plate or the terminal cover side wall. a protrusion that contacts the deformable portion in a predetermined range in the sliding direction to elastically deform the deformable portion and elastically urges the terminal cover toward the protrusion; A jack board characterized by: