JPS6191885A - Contact locker for cable connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a contact retaining device for a cable connector.

(Prior art) Conventionally, a crack 1α is formed in the axial direction of a truncated cone as shown in Fig. 8.
As shown in Fig. 9, a plastic retainer 1 formed with a plastic retainer 1 is fitted into the annular groove 2α between the contacts 2, and during assembly, the retainer 1 is radially contracted and passed through the small diameter portion of the through hole of the feed edge member, and the outer surface of the small diameter portion is Although the bottom of the retainer 1 expanded in stages was locked to prevent it from coming off, it had drawbacks such as poor assembly workability, poor heat resistance, and difficulty in achieving dimensional accuracy.

(Purpose) The present invention is designed to improve assembly workability by sandwiching a contact retainer between two insulating cylinders in advance and inserting it into the contact later to prevent it from coming off. The purpose is to make it easier to achieve accuracy.

(Structure) In order to achieve the above object, the present invention aligns and abuts the through holes of two insulating cylindrical bodies having a large number of through holes into which contacts are inserted, and a large diameter hole concentric with the through hole abutting part. A contact retainer is formed by making a cut in the tip of a square tube and forming a claw part bent inward and a straight claw part, and the contact retainer is assembled into a large diameter hole. The contact is inserted into the matching hole while expanding outward against the force, and the contact is fixed at the position where the large diameter part passes through the claw part, so that the claw part is locked with the stepped part. It is characterized by: The following will be explained in detail based on examples. 10.11 is an insulating cylinder in which a large number of through holes 10α, 11α are formed in the axial direction into which a large number of contacts 12 are inserted. A hole 14 is formed. Reference numeral 15 denotes a contact retainer, which has six slits 15a formed in parallel in the longitudinal direction of a rectangular metal plate as shown in FIGS. Every other section is bent inward at a predetermined angle to form a bent shape 15b, and the other every other section is left straight to form a straight claw 15c.

The contact retainer 15 is fitted and clamped into the large diameter hole 14, the straight claws 15C are engaged with the tip wall 141Z of the large diameter hole 14, and the bent die 15h projects into the through hole 11fZ. 1.6 and 17 are insulating cylinders in which a large number of through holes 16α and 172 are formed in the axial direction into which a large number of male contacts 18 are inserted. A large diameter hole 19 is formed, and a contact retainer 15 similar to that described above is fitted and clamped in the same manner as described above. 20
is a male contact that connects through hole 1 to through hole 16a as shown in Figure 5.
When inserted toward 712, the flange 20a expands the bending mold 15b as shown in FIG. 6, and when it passes through the bending mold 15b, the bending mold 15b returns to its original position as shown in FIG. 7 by its own elasticity after the flange 20a. It locks onto the end face and prevents the male contact 20 from coming off to its original position. The tip of the male contact 20 projects forward from the narrow hole portion 17α' of the through hole 17a. 21 is a female contact, and the large diameter part 21α is the contact retainer 15 as described above.
When the female contact 21 passes through, the bending die 15h engages with the rear end surface of the large diameter portion 214, and prevents the female contact 21 from coming off to its original position.

The insulating cylinder 10.11 is attached to the plug shell 22 with a nut 2.
3, the insulating cylinders 16 and 17 are integrally fixed to the receptacle 24 with a tightening nut 25, the male contact 2o is fitted into the female contact 21, and the plug shell 22 and the receptacle 24 are connected with the connecting nut 26. are connected together. Reference numeral 27 denotes a multi-core cable, and each separate core 27α is connected to each female contact 21.

(Effects) According to the present invention, the through holes of two insulating cylinders each having a large number of through holes into which contacts are inserted are brought into contact with each other, and concentric large-diameter holes are formed in the through hole abutting portions. A contact retainer with a cut in the tip of the cylinder and a claw part bent inward and a straight claw part is fitted into a large diameter hole, and the large diameter part of the contact pushes the claw part out against its elasticity. Insert the contact into the matching hole while expanding it in the opposite direction, fix the contact at the position where the large diameter part passes through the claw part, and the claw part locks on the stepped part, so please prepare two pieces in advance. Since the contact retainer is sandwiched between the insulating cylinders and the contacts can be inserted later to prevent them from coming off, assembly work is easy, it is heat resistant, and since it is a square cylinder, it is easy to achieve dimensional accuracy.

[Brief explanation of the drawing]

Fig. 1 is a front half-cut front view of an embodiment of the present invention, Fig. 2 is a side view of the contact retainer shown in Fig. 1, and Fig. 3 is an A of Fig. 2.
-A front sectional view, Figure 4 is a developed plan view of Figure 2, Figures 5 to 7 are explanatory diagrams of the operation of locking the contact retainer and male contact in Figure 1, and Figure 8 is a conventional contact A perspective view of a retainer, and FIG. 9 is a cutaway front view of a main part of a conventional product attached to a male contact. 10.11, 15.16... Insulating cylinder, 10α, 11
α, 15a, 16α...through hole, 14.19...
Large diameter part, 15... Contact retainer, 15α...
Slit, 15b...bent type, 15c...straight claw, 2o...male contact, 20α...flange,
21...Female contact, 21α...Large diameter part.

Claims (1)

[Claims] The through holes of two insulating cylinders each having a large number of through holes into which contacts are inserted are brought into contact with each other, a concentric large-diameter hole is formed in the contact part of the through holes, and a cut is made at the tip of the square cylinder. A contact retainer with a claw part bent inward and a straight claw part is fitted into a large diameter hole, and the large diameter part of the contact expands the claw part outward against its elasticity. A cable connector contact retaining device in which a contact is inserted into a matching through hole, the contact is fixed at a position where the large diameter part passes through the claw part, and the claw part is locked to the step part.