JPS5937975Y2 - Cord connector contact fixing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a contact fixing device for a cord connector.

A conventional cord connector has a narrow diameter portion 1 of a contact 1 with a narrow diameter portion 1a formed in the middle, as shown in FIGS. 1 to 3.
The slit 2a of the truncated conical nylon bushing 2 is spread out against the elastic force and fixed as shown in FIG.

3 is a disk made of an insulating material and provided with a predetermined number of through holes 3a.

4 is a cylinder made of an insulating material, and has a through hole 4a opposite to the through hole 3a, and a conical hole 4a with an enlarged inner end of the through hole 4a.
', the outer diameter of the end surface of the conical hole 4a' is made larger than the outer diameter of the through hole 3a, the through holes 3a and 4a of the disk 3 and the cylinder 4 are aligned and abut, and fitted into the casing 5, and the stop is made. Fix together with ring 6.

Then, the contact 1 assembled as shown in FIG. 2 is pressed and inserted through the through hole 3a of the disc 3.

Since the rear part of the nylon bushing 2 has a larger diameter than the tip 3a of the through hole 3a, it is pressed by the tip 3a' and is displaced inward against its own elasticity to pass through. The elasticity causes the nylon bushing 2 to expand to its original state, and the bottom of the nylon bushing 2 is brought into contact with and locked to the outer periphery of the front surface of the through hole 3a.

However, since it uses nylon bushings, it has the disadvantage that it cannot be used at high temperatures.

Therefore, it was considered to use a bushing made of phosphor bronze instead of nylon, but as shown in Figure 4, there was a large amount of deformation when bushing 2' was attached to contact 1, and the insertion force was large, causing damage to the disc, so it could not be put to practical use. There wasn't.

The present invention involves cutting the center of a metal disk such as phosphor bronze, and attaching a metal engagement plate with a number of cone-shaped bullet pieces with pointed tips to the through-hole abutment area between the insulating disk and the cylinder. The contact is engaged and fixed, and the contact is inserted into the through hole, and the tip of the engagement plate spring piece is engaged and fixed to the narrow diameter part in the middle of the contact by its elasticity, thereby eliminating the drawbacks of the conventional method.

5 to 7 show an embodiment of the present invention.

Reference numeral 10 is a disk made of an insulating material, provided with a predetermined number of through holes 10a, and a seat hole 1 having a larger diameter than the through hole 10a at the inner end of each through hole 10a.
0a' is formed.

Reference numeral 11 denotes an engagement plate made of phosphor bronze, which is formed into a conical shape with a large number of bullet pieces 11a that are cut and raised at the center and have sharp tips.

Reference numeral 12 denotes a cylinder made of an insulating material, and has a through hole 12a opposite to the through hole 10a, and the inner end of the through hole 12a is an enlarged conical hole 12a', and the outer diameter of the end surface of the conical hole 12a' is The diameter is smaller than the outer diameter of the engagement plate 11, the engagement plate 11 is fitted into the seat hole 10a' of the disc 10, the bullet piece 11a is directed forward, the cylinder 12 is brought into contact with the disc 10, and the reverse holes 10a and 12a are aligned. The elastic piece 11a of the engagement plate 11 is inserted into the conical hole 12a', and is clamped and fixed at the bottom of the conical hole 12a'.
The step part 12b of the cylinder 12 is engaged with the intermediate step part 13a of the housing 13, and the outer periphery of the disk 10 is connected to the stop ring 1.
4 and locks the whole thing together.

15 is a contact having a narrow diameter portion 15a formed in the middle thereof.

This contact 15 is inserted through the through hole 10a of the disk 10, and the bullet piece 11a is expanded against its elasticity and press-fitted, and its own elasticity engages the tip of the bullet piece 11a with the narrow diameter part and prevents it from coming out. That's what I do.

According to the present invention, an engagement plate having a conical shape with a large number of bullet pieces cut out at the center and pointed at the tip is engaged and fixed in a through-hole abutting part between a disk made of an insulating material and a cylinder, and the bullet pieces are passed through. Since it engages with the narrow middle diameter part of the contact inserted into the hole, it can be used at high temperatures, the insertion force is small, and workability is good, and the contact is reliably engaged without damaging the disk or cylinder. be able to.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the contact and bushing of the first comparative example of the prior art, Fig. 2 is a front view of the contact and bushing shown in Fig. 1 assembled, and Fig. 3 is a front view of the entire conventional device. 4
The figures are explanatory diagrams sequentially showing the assembly of the contact and bushing of a second comparative example of the prior art, Fig. 5 is a front view of the contact of an embodiment of the present invention, Fig. 6 is a perspective view of the engagement plate, and Fig. 7 is the invention of the present invention. It is a front sectional view of the whole. 10...Disc, 10a...Through hole, 10
a'... Seat hole, 11... Engagement plate, 11
a...Bullet piece, 12...Cylinder, 12a.
...Through hole, 12a'...Conical hole, 13.
...Housing.

Claims (1)

[Scope of utility model registration request] A predetermined number of through holes are formed in a disk made of insulating material, a seat hole with a larger diameter than the through hole is formed at the inner end of each through hole, the center is cut out, and a number of bullet pieces with sharp tips are formed into a conical shape. A metal engagement plate formed in a shape was fitted into the seat hole with the bullet facing forward, a through hole opposite the through hole was provided in a cylinder made of an insulating material, and the inner end of the through hole was expanded. A conical hole is formed, and the outer diameter of the end surface of the conical hole is smaller than the outer diameter of the engagement plate.The cylinder and disk are brought into contact with each other to match the through holes, and the outer periphery is covered with a casing to form an integral body. A contact fixing device for a cord connector, in which a contact having a narrow diameter portion is inserted through a disc through hole, and the tip of a bullet engages with a stepped portion at the end of a narrow diameter portion.