JPH028385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a through terminal provided on a metal plate.

2. Description of the Related Art Conventionally, a through terminal provided in a metal plate body such as a metal housing has a structure shown in FIG. 1. This through terminal includes a hollow male insulator 1 having a cylindrical part 12 that can be fitted into a through hole provided in a metal plate 7 and has a flange 11 at one end, and a male insulator 1 that protrudes from the through hole. It has a recess that can fit into the cylindrical portion 12 and a female insulator 2 having a through hole at the center of the bottom of the recess.

The material of the male and female insulators 1 and 2 is made of highly insulating resin such as epoxy, phenol, PBT, and PPS.

To attach the male insulator 1 to the plate 7, apply adhesive 10 to the stepped surface of the flange 11 of the male insulator 1, and insert the cylindrical part 12 into the through hole from the inside of the casing. The cylindrical part 12 is bonded to the plate 7 and the adhesive 10 is also applied to the surface where the female insulator 2 contacts the cylindrical body.
The insulators 1 and 2 are fixed with the plate 7 in between by fitting the recesses into the insulators 1 and 2. Next, pass the lug terminal 3 through the screw 5 through the through holes of the insulators 1 and 2, pass the washer 6 on the outside of the housing, fit the nut 8, decide the direction of the lug terminal 3, tighten it, and then tighten the two washers 6. and screw washer 9
This was done by threading the nut 8' through the hole.

This conventional structure has a large number of parts,
Since adhesive is applied to prevent the rotation of the insulators 1, 2 and the lug terminals 3, the lug terminals 3 and lead wires 4 cannot be connected until the adhesive 10 dries and is completely fixed. Moreover, there are also drawbacks such as over-applying the adhesive 10 and causing the adhesive to protrude from the outer periphery of the insulator.

The present invention can restrict the rotation of the insulator and terminal,
The purpose of the present invention is to provide a through terminal that can be installed efficiently without using adhesive.

Examples will be described below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention showing a through terminal according to the present invention and a part of a plate of a metal casing, and FIG. 3 is an exploded perspective view thereof. In the figure, the front left side is the outside of the housing.

This through terminal consists of a male insulator 20, a female insulator 30, a terminal 40, an elastic plate 50, and an eyelet 60. The male insulator 20 integrally includes a polygonal (regular octagonal in the figure) cylindrical portion 22 and a collar 21 at one end thereof, and the central through hole 23 has an inner diameter through which the eyelet 60 can be inserted. The female insulator 30 is a cylindrical body, and has a polygonal (eg, regular octagonal) recess 31 with a required depth that can fit into the cylindrical portion 22 of the male insulator 20 on one end surface in the axial direction. The other end face is provided with a circular recess, and the bottom thereof is provided with a rectangular recess 32 that fits into the base 41 of the terminal 40, and a through hole 33 is bored in the center of the bottom of the recesses 31 and 32. . Male/female insulators 20 and 3
Materials for 0 are epoxy, phenol, PBS,
Made of highly insulating resin such as PPS. The terminal 40 is a metal plate bent into an L shape, and a through hole 42 is provided in a base 41 that is a fixed part. The elastic plate 50 is a ring-shaped rubber plate that substantially matches the end surface of the female insulator 30 on the recess 31 side. A polygonal through hole 71 into which the polygonal cylindrical portion 22 of the male insulator 20 can be inserted is formed in the plate 70 of the metal housing.

The through terminal is assembled as follows. First, insert the cylindrical portion 22 of the male insulator 20 into the polygonal through hole 71 from the right back side of the plate 70 (inside the housing).
The cylindrical portion 22 is fitted into the plate body 70 and then protrudes from the plate body 70.
Fit the elastic plate 50 into the elastic plate 50, fit the recess 31 of the female insulator 30 over it, and place the base 41 of the terminal 40 in the recess 32 of the female insulator 30 with the connecting part in the required direction (in the figure, vertically and with the base on the right side), and furthermore, an eyelet 60 is inserted into the through hole communicating with the through holes 23, 33 of both insulators 20, 30 and the through hole 42 of the terminal 40, for example. It is inserted from the body 20 side and caulked along the periphery of the through hole 42.

At this time, since the plate 70, the male insulator 20, and the female insulator 30 each have slight warpage, distortion, etc., the elastic plate 50 is placed between the plate 70 and the female insulator 30. When these are caulked without being inserted, the male insulator 20 made of the resin described above,
The female insulator 30 exceeds its elastic limit and is more likely to chip or crack.

Therefore, as described above, the elastic plate 50 is replaced by the plate 7.
0 and the female insulator 30, the elastic plate 50 is appropriately deformed, and damage to the male insulator 20 and the female insulator 30 can be prevented.

Since the through terminal has such a structure, the plate 7
Even if there is slight play between the regular octagonal through hole 71 and the cylindrical portion 22, or between the cylindrical portion 22 and the recess 31, the rotation range of the terminal 40 can be limited to less than 90°, and the elastic plate 50 By inserting eyelet 6
This prevents damage to the insulators 20 and 30 during the caulking work, and also prevents the terminal 40 from rotating due to the rotation of the insulator 30, and since only the caulking work is required, it can be efficiently attached to the plate 70. . In addition, the number of parts is small and the cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view showing the structure of a conventional feedthrough terminal, FIG. 2 is an assembled perspective view of an embodiment of the feedthrough terminal of the present invention, and FIG. 3 is an exploded perspective view. 1, 20: male insulator, 2, 30: female insulator, 11, 21: flange, 22: polygonal cylindrical part,
23, 33, 42: through hole, 31: polygonal recess,
32: Square recess, 40: Terminal, 41: Base, 5
0: Elastic board, 60: Eyelet, 7, 70: Board, 7
1: Polygonal through hole.

Claims (1)

[Scope of utility model registration request] A hollow male insulator having an L-shaped terminal with a through hole at its base and a cylindrical part that can be penetrated into a polygonal through hole provided in a metal plate to be attached and has a flange at one end. and a polygonal recess on one surface into which the cylindrical portion protruding from the polygonal through hole can fit, a recess on the other surface into which the base of the terminal can fit, and a through hole in the center of the bottom of these recesses. an elastic plate inserted between an end face of the female insulator and the metal plate, and a through hole in which the male/female insulator and the terminal communicate with each other; A feed-through terminal characterized by consisting of a caulked eyelet.