JPH02236975A - Cable connector holding mechanism - Google Patents

Abstract

PURPOSE:To enable smooth engagement and facilitate an incorporating work by providing a holding piece which is elastically engaged with the draw-down portion of a connector, and disposing a releasing means for releasing the holding piece from a stepped portion. CONSTITUTION:Upon pushing a cable connector 40, the holding piece 21 of a holding member is elastically engaged with the draw-down portion 42 of the cable connector 40, and further, the distal surface of the holding piece 21 is locked in the stepped portion 41A of the cable connector so as to prevent the cable connector from being pulled out. In the case of pulling the cable connector out of an insulative block, the pulling portions 34, 34 of a releasing member 30 are pulled backward by a finger. The holding piece 21 of the holding member is gradually extended at the slope portion 32B of the widening projection 32 of the releasing member so as to be widened at the maximum at a wide portion 32A. Therefore, the stepped portion 41A of the cable connector is released from the holding piece 21 of the holding member so that the cable connector can be pulled out backward.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application) The present invention releasably holds a coaxial cable connector or power cable connector in place within an insulator block for connection to a phase connector. The present invention relates to a connector holding mechanism for the purpose of the present invention.

[Conventional technology]

Conventionally, such a cable connector holding mechanism is disclosed in Japanese Patent Application Laid-open No. 198071/1983. This conventional holding mechanism includes a cable connector in which a first stepped portion having a larger diameter than other portions is provided in a predetermined portion of the outer peripheral surface, and a terminal receiving hole having second and third stepped portions. an insulator block into which a connector is inserted from one end of the large insulator block; a holding member disposed between the second and third step portions and having elasticity so as to expand in the radial direction when the first step portion passes; , which is a cylindrical member that is movable in the axial direction so as to spread the holding member in the radial direction when the connector is inserted and held in the hole and is pulled out. With such a holding structure, the connector can be pulled out from the connector insertion direction side without the need for a special extraction tool. The connector can be pulled out, and the connector can be taken out from the insulator block in a state where it is fitted and connected to the mating connector, making it convenient in its own way.

[Problem to be solved by the invention]

However, with the conventional connector retaining structure as described above. has the following problems.

■ Because there is a large clearance between the outer diameter of the cylindrical member for expanding the retaining ring (retaining member) and the inner diameter of the terminal receiving hole into which the cylindrical member is inserted, the insulation of the cable will deteriorate when the cable connector is held in the terminal receiving hole. The weight of the external part of the body block or the external force acting on it causes the connector to be held at an angle within the main body, and the connector is held against the cylindrical member (when attempting to pull out, the cylindrical member is slid). The cable cannot be pulled out smoothly, which reduces work efficiency.This is especially noticeable when the cable is stretched forcibly (see Figure 6).Also, when connecting the connector, Even if an attempt is made to fit the connector with a mating connector in an inclined state, there is a risk that the fitting will not be smooth and the tips of the connectors will bump into each other.

■ The cylindrical member for expanding the retaining ring needs to be movably assembled into the constricted middle part of the connector, so the exterior of the connector must be divided into two parts and the exteriors must be welded together, making this work extremely difficult. , the cost was high.

■ The wall thickness of the cylindrical member is thin due to spatial constraints.
In addition, the flange provided on the cylindrical member for the pushing operation must be made small, making the pushing operation difficult.

■ Since the cylindrical member slides on the outer conductor of the connector, it can cause problems such as damaging the surface of the outer conductor or peeling off the plating. An object of the present invention is to provide a cable connector holding mechanism that solves these problems.

[Means to solve the problem]

According to the present invention, the above objects include: a cable connector having a contact portion for contacting a mating connector at the front, a constricted portion having a stepped portion in the middle, and a connecting portion for connecting a cable at the rear; An insulator block comprising a holding member for holding the constriction of the cable connector and a release member for releasing the holding member in an insulating housing that receives the cable connector, wherein the insulating housing can be penetrated in the front and rear directions. A connector accommodation hole;
An opening facing upward and a sliding surface extending in the front-rear direction are formed, and the holding member has a through hole formed at a position coaxial with the connector receiving hole when the holding member is assembled into the opening of the insulating housing from above. , and a holding piece for elastically engaging with the fin portion of the connector, and a releasing member for sliding on the sliding surface to release the holding piece from engagement with the stepped portion. This is achieved in that the slide part with the release means has a sharp shape.

[Effect]

According to the cable connector holding mechanism of the present invention, when assembling the connector, the holding piece engages with the stepped portion of the connector by inserting the connector into the connector receiving hole of the insulator block. When holding the connector and pulling out the connector, by sliding the slide part, the step part and the holding piece are released from the engagement state by the releasing means, and the connector can be easily pulled out.

〔Example〕

Next, embodiments of the present invention will be described in detail based on FIGS. 1 and 2 of the accompanying drawings.

FIG. 1 is an exploded perspective view of a cable connector holding mechanism according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the principle of operation.

The insulator block 1 mainly includes an insulating housing IO, a holding member 20, and a release member 30.

The insulating housing 10 is made of an insulating material such as a plastic material, and has one or more connector receiving holes 1l.
is formed to penetrate the block in the front-rear direction (left-right direction in FIG. 1). The connector housing hole 11 is divided into a front hole 11A and a rear hole 11B, each of which is formed on the same axis with a front wall portion 16A and a rear wall portion 16B.

Since this connector receiving hole directly contacts and guides the cable connector 40, its hole diameter is determined so that the clearance between it and the cable connector is extremely small. An opening l2 that can be penetrated in the vertical direction is formed between the front wall part 16A and the rear wall part 16B to receive a holding member 20, which will be described later. A groove 12A that receives a flange 22 of a holding member 20, which will be described later, is formed at the rear of the opening l2 and extends vertically. On the upper and lower surfaces of the insulating housing 10 are slide surfaces 13.on which a release member 30, which will be described later, is slid back and forth after insertion. 13 are formed. Note that the sliding surface 13 formed on the rear wall portion 16B has tapered portions 13B formed on the upper and lower surfaces to facilitate insertion when the release member 30 is inserted into the insulating housing 10 from the rear. ing.

The above sliding surface 13. 13, a receiving groove 1 is provided on the front surface thereof to receive a width expanding protrusion 32 of a release member 30, which will be described later.
4. 14 are provided on the upper and lower surfaces.

The holding member 20 is also molded from an insulating material such as a plastic material like the insulating housing 10, and has a conical cylindrical holding piece 21 with a slot 23 in front thereof, and an angular flange 22 behind it. It is integrally formed. The flange 22 is provided with a through hole 22A for passing the connector therethrough.

The release member 30 is also molded from an insulating material such as a plastic material like the insulating housing IO, and its front part is a slide part 31.31 divided into an upper part and a lower part. A width expanding protrusion 32 for expanding the holding piece 21 of the holding member 20 is formed inside the holding member 31 . The widening projection 32 has a wide front portion 32A.
, the middle part is an inclined part 32B, and the rear part is a narrow part 32C. At the rear of the slide part, there is provided an operating part 33 that connects the two slide parts 31.31, and at the upper and lower parts of the operating part 33, locking parts 34.34 are provided for engaging and pulling fingers. It is being Furthermore, the operation unit 33 includes a tensioning tool (
Two tool tensioning parts 35 and 35 are formed at the top and bottom, each having a hole 35A for inserting and pulling a tool (not shown). A through hole 36 for passing a connector therethrough is formed in the intermediate portion of the tool pulling portion 35.35.

The cable connector 40 has a coaxial cable or a power cable 50 connected to it, and has a contact part 4l for contacting a mating connector at the front part, a constricted part 42 in the middle, and a cable 50 at the rear part. A connecting portion 43 is formed to connect the two. The constricted portion 42 is the stepped portion 4
1A and a tapered portion 42^ bound the contact portion 41 and the connecting portion 43, respectively. A rear end portion 43^ having a large diameter is provided at the rear portion of the connecting portion 43.

Next, a procedure for assembling the insulator block 1 constructed as described above will be explained based on FIG. 1.

(1) First, the holding member 20 is inserted into the opening l2 of the insulating housing 10 from above as shown in FIG.

(2) Next, the release member 30 is inserted from the rear of the insulating housing 10 into the sliding surface 13 of the insulating housing 10. 13 to complete the assembly of the insulator block 1. During insertion, the widening protrusion 32.
B, 13B, and is further guided by the slide portion 31.B.
31, and then returns to its original shape to form the receiving groove 14. It can be stored in 14.

Further, the procedure for inserting and extracting the cable connector 40 into the insulator block 1 assembled in this way will be explained based on FIG. 2.

■ First, insert the cable connector 40 in FIG. 2 (8) from the rear of the insulator block l, and push it in while expanding the holding pieces 21 of the holding member 20 at the contact portion 41 (see FIG. 2 (B)). ).

■ If you continue to push in the cable connector 40,
As shown in FIG. 2(C), the holding piece 21 of the holding member elastically engages with the constricted part 42 of the cable connector, and the distal end surface of the holding piece 21 is brought into contact with the stepped part 42 of the cable connector.
1A to prevent the cable connector from coming off. Further, the large-diameter rear end portion 43A of the cable connector comes into contact with the rear end surface of the insulating housing 10 to prevent the cable connector from moving further. This completes the assembly of the insulator block and cable connector.

(2) Next, when pulling out the cable connector from the insulator block, first hook your finger on the tension part 34, 34 of the release member 30 and pull it backward. Then, the holding piece 21 of the holding member is attached to the widening projection 3 of the release member as shown in FIG. 2(D).
It gradually widens at the inclination i1 portion 32B of No. 2 and reaches its maximum at the wide portion 32A. As a result, the stepped portion 41A of the cable connector
Since the holding member is disengaged from the holding piece 21, the cable connector can be pulled out rearward.

The hole 35A in the operation part 33 for inserting and pulling a tensioning jig (not shown) allows a finger to be pulled on the tensioning part of the release member when a plurality of insulator blocks are vertically assembled with high density. At that time, a tension jig can be inserted into the hole 35^ and the tension cable connector can be removed.

Next, the second aspect of the present invention. An embodiment will be described based on FIG.

In the previous embodiment, the release member was moved in the direction of pulling it out from the insulating housing when the cable connector was removed, but this embodiment shows that it is possible to move the release member in the opposite direction.

In this embodiment, the holding member 50 is formed of a flange (front wall portion) in which a holding piece 51 has a slot 53 . At the base of the holding piece 51, that is, at the four corners of the front wall, protruding pins 55 are formed integrally with the holding piece.

On the other hand, release grooves 63.63 are formed on the sides of the upper and lower slide parts 61.62 of the release member 60. The release groove 6
3 is the deepest at the front (right) end and is the holding member 50
is located within the constriction 42 of the cable connector 40, and becomes shallower toward the rear (left) end, pushing the pin 55 outward to the side and pushing the holding piece 51.51 laterally. It is designed to expand elastically.

In this embodiment, as shown in FIG. 5(A). As shown in FIG. 5(B), when the cable connector 40 is inserted from the rear, the holding pieces 51 and 51 are expanded by the contact portion 41, and the holding pieces 51 are engaged with the constricted portion 42 as shown in FIG. 5(C). become.

Next, when pulling out the cable connector, when the release member 60 is pushed in from the rear, the bin 55 is removed from the release member 60.
0 rides on the shallow part of the release groove 63, the holding pieces 51, 51 are elastically expanded, and the cable connector is released from the holding member. In this state, the cable connector can be removed.

FIG. 4 shows a third embodiment. In this embodiment, bottles 55^, 55A are press-fitted into holes 54A, 54A penetrating vertically in the four corners of the front wall of the holding piece 51A of the holding member 50A, and both ends thereof protrude from the top and bottom surfaces. This allows the bottle 55A to be made of a more wear-resistant material.

[Effects of the Invention] The cable connector retention mechanism of the present invention provides the following effects.

■ The clearance between the outer diameter of the cable connector and the connector accommodation hole in the insulating housing can be made small, so the connector will not tilt in the connector accommodation hole, and the tips will not collide with each other when mating with a mating connector. This eliminates the need for smooth fitting and connection.

■ Since there is no need to integrate the cylindrical member into the fin of the connector, there is no need to divide the exterior of the connector into two, no welding work is required, and the number of parts is reduced.
Therefore, the cost will be lower.

(2) The slide portion of the release member can be made sufficiently thick, so it has strong mechanical strength, and the tension portion can also be made sufficiently large, making the tension operation easy.

- Since the sliding portion does not slide on the exterior of the connector, it does not damage the exterior surface of the connector or cause problems such as peeling off the plating.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of the first embodiment of the present invention, Figure 2 (A
) to (D) are cross-sectional views sequentially showing the operating principle of the device in FIG. 1, FIG. 3 is an exploded perspective view of the second embodiment, and FIG. 4 is an exploded perspective view of the holding member of the third embodiment. , Fig. 5(A)-(
D) is a cross-sectional view showing the operating principle of the device shown in FIG. 4 in order, and FIG. 6 is a front view showing a part of the conventional device in use.

Claims (2)

[Claims] (1) A cable connector that has a contact part for contacting a mating connector at the front, a constricted part with a stepped part in the middle, and a connection part for connecting the cable at the rear, and an insulating housing that receives the cable connector. An insulator block having a holding member for holding the constriction of the cable connector therein and a release member for releasing the holding member, wherein the insulating housing has a connector receiving hole that can be penetrated in the front and back;
An opening facing upward and a sliding surface extending in the front-rear direction are formed, and the holding member has a through hole formed at a position coaxial with the connector receiving hole when the holding member is assembled into the opening of the insulating housing from above. , and a holding piece for elastically engaging the constricted portion of the connector, and a releasing member for sliding the sliding surface to release the holding piece from engagement with the stepped portion. A cable connector holding mechanism characterized in that a sliding portion having a means is formed. (2) The cable connector holding mechanism according to claim (1), wherein the release member has a hooking means for hanging an appropriate tool for sliding movement on the end face in the sliding direction.