JPH03214576A - Cable holding structure of connector - Google Patents

Abstract

PURPOSE:To provide sufficient pull stop effect by forming a retaining metal piece through consolidated molding furnished with a means to grasp a cable in such a way that the cable is held weak inside of a connector case at one end and that any external force impressed to the cable is absorbed outside of the case at the other end. CONSTITUTION:A retaining metal piece 5 holds a cable 3 in two places at the ends, and in the case 2 of a connector 1 the retaining metal piece 5 is prevented from slipping off certainly by appropriate means. Outside of the case 2, on the other hand, there is no restriction on the dia. of the cable 3, so that the cable 3 is grasped perfectly from above a protection sheath 33 which has not undergone stripping process, wherein the parts concerned are formed in a single piece structure. Inside of the case 2, the periphery of the cable 3 is grasped weak so as not to damage the insulated core wire 31, while an external force applied to the cable 3 is absorbed perfectly outside of the case 2 to provide protection so that the force is not transmitted to the wired part of the core wire 31. Thereby the cable is free from risk of being damaged, and a sufficient pull stop effect is obtained.

Description

[Detailed Description of the Invention] [Summary] A cable holding structure for a connector of a cable with a connector used for circuit connection in an electronic device, which does not damage the cable and has a sufficient tension-stopping effect. A cable holding structure for wiring a flexible cable to a connector, in which one end weakly grips the cable inside the connector case and prevents it from coming off in the case. The cable is configured to consist of an integrally molded holding fitting, which is provided with means for holding the cable and at the other end is provided with a means for gripping and holding the cable so as to absorb an external force applied to the cable outside the case.

[Industrial application field]

The present invention relates to a cable holding structure for a connector in a cable with a connector used for circuit connection in an electronic device.

Recent developments in electronic components are remarkable, including semiconductors, circuit components, connectors, printed boards, and wiring materials.

For this reason, devices are becoming increasingly smaller and more densely packaged.

Multi-core cables are used for circuit connections within and between equipment racks, and cables with connectors are often used, with both ends connected to connectors.There is a strong demand for these cables to be smaller and more dense while improving their electrical performance. It's been happening.

[Conventional technology]

Figure 3 shows the configuration of a conventional example, and Figures 4 (a) to (C)
Figure 1 shows an example of conventional cable terminal processing.

When manufacturing a cable with a connector, as shown in Figure 3, make sure that the cable 3 does not pull out from the connector 1.
When the C-ring-shaped clamp fitting 55 is gripped and attached to the cable 3 and this part is stored in the clamp socket 21 of the connector 1, the protruding pawl 56 bent outward at the end of the clamp fitting 55 will be inserted into the clamp socket. It is caught inside the cable 21 to prevent the cable 3 from coming off.

In this case, the cable 3 having a larger outer diameter than the cable insertion port 22 of the connector 1 undergoes terminal processing in the order of (a) to (C) as shown in FIG.

In Figure (a), the protective jacket 33 of the cable 3 and the shielding layer 32 consisting of the conductor fiber braid are peeled off and cut to reduce the outer diameter, and in Figure O: 1), this removed part is made into a heat-shrinkable material. protection tube 34
As shown in Figure (C), the clamp fitting 55 is attached to the narrowed outer diameter portion by gripping it.

[Problem to be solved by the invention]

However, in the case of the thick cable 3 shown in FIG. 4, when the protective jacket 33 and shielding layer 32 are peeled off, the insulated core wires 31 gathered under the wound layer of the thin insulating film 35 are bundled. If the clamp fitting 55 is gripped with strong force, the insulation coating may be damaged at the tightened portion of the insulated core wire 3, which may cause a short circuit or disconnection between the insulated core wires 31.

■ For this reason, if you protect it with insulating tape, etc., the outer diameter will become thicker and it will be difficult to store it.

■ If you continue to weaken your grip, the tension on the cable 3 will be incomplete.

There were problems such as.

SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a cable holding structure that does not damage the cable and has a sufficient tension-stopping effect.

[Means to solve the problem]

The above purpose is to provide a cable holding structure for wiring a flexible cable 3 to a connector l, as shown in FIG.
Hold cable 3 weakly inside case 2, and
It consists of an integrally molded holding fitting 5, which is provided with a means for holding the cable 3 so that it does not come off, and a means for gripping and holding the cable 3 at the other end so as to absorb an external force applied to the cable 3 from outside the case 2. , is achieved by the cable holding structure of the connector of the present invention.

[For production]

That is, the holding fitting 5 holds the cable 3 at two places on both ends, and inside the case 2 of the connector I, a means is mainly provided to prevent the holding fitting 5 from coming off, and on the outside of the case 2,
Since there is no restriction on the thickness of the cable 3, the cable 3 can be completely gripped and held from above the protective jacket 33 which has not been peeled off, and the holding fitting 5 has each part integrally molded. It serves a purpose.

There are various methods used in the past to prevent it from coming off inside, such as hooking a protruding spigot or a protruding pawl inside the receptacle, fitting it into an embossing, or tightening it with a screw.

A commonly used gripping means is a partially open C-ring or a connected O-ring that is clamped in a predetermined position.

In the present invention, inside the case 2, the outer diameter part of the cable 3 is gripped weakly to the extent that the insulated core wire 31 is not damaged, and outside the case 2, the cable 3 is gripped completely, and the cable 3 is gripped completely. Completely absorbs external force and insulated core wire 31
This protects the wiring from being transmitted.

Thus, it is desirable to provide a cable holding structure that does not damage the cable and has sufficient tension-retaining action.

〔Example〕

The present invention will be specifically described below with reference to embodiments shown in the drawings. The same reference numerals indicate the same objects throughout the figures. FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2(a) to 2(C) show cable terminal processing according to an embodiment of the present invention.

In this embodiment, regarding the same connector 1 as the conventional example described above,
This is applied to the same cable 3 which is thicker than the cable insertion port 22.

As shown in Fig. 2, etc., the retainer 5 is made of a brass plate, and has a C ring 51 at one end and a protruding claw 5 bent outward.
3, and has a somewhat larger C ring 52 at the other end, and both are integrally connected by a narrow band.

The cable 3, which is thicker than the cable insertion port 22, is
), the protective jacket 33 made of vinyl chloride and the shielding layer 32 made of copper chloride are peeled off and cut, and this part is covered and protected with a heat-shrinkable protective tube 34 as shown in FIG. 3(b).

Align the narrowed part and the original outer diameter part of the cable 3 with the relative position of the cable insertion port 22 of the case 2 and the clamp socket 21, as shown in the same figure (C),
The rings 51 and 52 are clamped to grip and fix the holding fitting 5. At this time, the narrowed part has a protruding claw 53.
The ring 51 tightens the protective core wire 31 with a weak predetermined force so as not to damage it, and the C-ring 52 on the opposite side strongly grips the portion where the protective tube 34 covers the cable 3 and holds the holding fitting 5 to the cable 3. to be fixed to.

As shown in FIG. 1, the cable 3 whose terminal has been treated is inserted through the cable insertion port 22 of the case 2 of the connector 1, the protective core wire 31 is wired to the terminal of the connector 1, and then the C-ring 51 at the tip is inserted. When the grip portion of the cable 3 is stored in the clamp socket 21 and the case 2 is closed, the protruding claw 53 is caught inside the cable insertion port 22, absorbing external forces such as tension and compression applied to the cable 3, and closing the case 2. This function protects the connecting portion of the protective core wire 31 without affecting it.

The above embodiment shows an example, and the shapes and mechanisms of each part are not limited to those described above. For example, the shape of the gripping part may be in the form of an O-ring instead of a C-ring, the narrow band part connecting the C-rings together may be a plurality of thin bands, and the protruding pawl 53 may be used as a fixing means for the cable 3. Although the mechanism is such that it is hooked into the case 2, a mechanism that is inserted into a screw or a pin-shaped body may be used, and a fixing mechanism that matches the structure of the case 2 of the connector 1 may be used.

Although the cable 3 is an example of a multicore cable with a shielding layer 32, it is clear that the cable 3 is not limited to this.

〔Effect of the invention〕

As described above, the present invention provides a cable holding structure that does not damage the cable and has a sufficient tension-stopping effect.
Not only can it be provided at a low cost, but also by replacing the connector that is already in use with one that includes a holding fitting, high reliability can be achieved, and the effect is remarkable.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a cable terminal treatment of an embodiment of the present invention, Fig. 3 is a block diagram of a conventional example, and Fig. 4 is a cable of a conventional example. This is terminal processing. In the figure, 1 is a connector, 2 is a case, 3 is a cable, 5 is a holding fitting, 21 is a clamp socket, 22 is a cable insertion port, 31 is a protective core wire,
32 is a shielding layer, 33 is a protective jacket, 34 is a protective tube, 35 is an insulating film, 51.52 is a C ring, 53
．． 56 is a protruding pawl, and 55 is a clamp fitting. Preparation of a cable according to an embodiment of the present invention 1 Termination of a cable as an example of one of the most important examples in Mikami 1 Fig. 3 Terminal treatment of a cable as an example of an unconventional example

Claims (1)

[Claims] A cable holding structure for wiring a flexible cable (3) to a connector (1), wherein the cable is attached to one end of the cable inside a case (2) of the connector (1). (3) is provided with a means for weakly gripping the cable (3) and holding it in the case (2) to prevent it from coming off; A cable holding structure for a connector comprising an integrally molded holding fitting (5) provided with means for gripping and holding the cable (3).