JPH0438152Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a composite connector, and more specifically, a connector for connecting a composite cable in which a plurality of electrical control core wires are attached to a fluid introduction tube. , when the inspection TV camera inside the sewer pipe is connected to the ground main unit, and the inspection TV camera is attached with an interference removal device that uses air pressure, etc.
The present invention relates to a connector useful for connecting to the device.

[Conventional technology]

Although not particularly shown, conventional connectors for connecting composite cables have a structure in which the gas introduction pipe of the cable side connector and the gas introduction pipe of the equipment side connector are connected via an elastic member such as a rubber bushing.

[Problem that the invention attempts to solve]

However, with a connection structure using only elastic members such as rubber bushings, there may be variations in the hardness of the elastic members, and there may be changes over time due to wear, deformation, etc., resulting in loss of airtightness and poor reliability. There was a problem.

The present invention was developed in view of these conventional problems, and its purpose is to ensure that the fluid introduction tube of the composite cable has a stable and reliable airtight state under any usage environment. The object of the present invention is to provide a composite connector that can be connected.

[Means for solving problems]

For this purpose, the present invention is a connector for connecting a composite cable in which a plurality of electric control core wires 101 are attached on a fluid introduction tube 102, and includes a plug and a receptacle, and the plug is a fluid introduction tube for the composite cable. A fluid introduction pipe 2 having a funnel-shaped portion 3 to which a tube 102 is connected, and a plurality of electrical control core wires 101 of a composite cable arranged concentrically with the fluid introduction pipe 2 via insulators 6 and 7. The receptacle has a plurality of socket contacts 15 to be connected, and the receptacle includes a pipe 31 that fits tightly with the fluid introduction pipe 2 of the plug, and a pipe 31 that is wrapped around the pipe 31 so that when the plug is tightly fitted with the fluid introduction pipe 2, the receptacle has a funnel. an elastic sealing member 34 that is hermetically pressed in the radial and axial directions by the shaped portion 3;
The socket contact 15 of the plug is arranged on the concentric circle of the pipe 31 with insulators 37 and 38 interposed therebetween.
A plurality of pin contacts 49 are wound around the pipe 31 and are installed between the insulators 37 and 38, and are compressed when the plug is fitted to the funnel of the fluid introduction pipe 2 of the plug. The structure is characterized by a resilient member 48 that maintains the pressed state between the shaped portion 3 and the elastic sealing member 34.

[Effect]

The composite connector of the present invention includes a plug and a receptacle, and a composite cable having a plurality of electrical control core wires 101 on a fluid (air) introduction tube 102 is connected to the plug.

That is, the fluid introduction tube 102 is hermetically connected to the fluid (air) introduction pipe 2 via the clamp joint 4 and the tightening clamp 5, and the electrical control core wire 101 is soldered to the soldered portion 16 of the socket contact 15. An electrical connection is then made, and the plug is mated and connected to a receptacle on the side of a power unit using a pneumatic system.

The plug and receptacle are inserted into the fitting portion 32 of the pipe 31 while the plug-side fluid introduction pipe 2 pushes the receptacle-side pipe 31 slightly forward against the elasticity of the spring 48. The fitting part 17 of the butt contact 15 is connected by fitting contact with the receptacle side pin contact 49, and the shell 3 of the connecting nut 20
0, the composite cable is completely connected, and the fluid introduction pipe 2 on the plug side and the pipe 31 on the receptacle side are connected to the O ring 34 and the funnel shape of the fluid introduction pipe 2 by the spring 48. As a result of the press-contact condition between the part 3 and the triangular groove in the radial and axial directions being reliably maintained, there is no air leakage even when high-pressure air is sent through the tube 102 of the composite cable, resulting in stable reliability. The connection is maintained in a highly airtight state.

Hereinafter, embodiments of the present invention will be described based on the drawings.

The proposed connector consists of a plug shown in Figure 1 and a second
It is equipped with the receptacle shown in the figure.

To explain the structure of the plug, a pipe 2 arranged in the direction of the central axis of the insert shell 1 introduces fluid (air), and a funnel-shaped part 3 is provided at its front end (the side that fits with the receptacle). At the same time, a clamp joint 4 to which a tube 102 for introducing fluid (air) in the composite cable is externally connected is coaxially connected to the screw hole at the rear end, and furthermore, the clamp joint 4 is threadedly connected to the tube 102 for introducing fluid (air) in the composite cable. A tightening clamp 5 is screwed to tighten the connecting portion of the tube 102.

Insulators 6 and 7 are placed on the concentric circle of the fluid introduction pipe 2.
However, the inner step 8 of one of the insulators 6 is locked to the outer step 10 of the fluid introduction pipe 2, and the outer step 9 is locked to the inner step 11 of the insert shell 1. Inner peripheral stepped portion 12 of insulator 7
is disposed so as to be locked to the outer circumferential step 13 of the fluid introduction pipe 2, and is fixed by a retaining ring 14 attached to the rear end of the insulator 7.

In the axial direction of the insulators 6 and 7, a fluid introduction pipe 2 is provided.
A plurality of socket contacts 15 surround the socket contacts 15, with their soldered portions 16 protruding slightly outward from the insulator 7, and fitting portions 17 with mating pin contacts.
facing inside the insulator 6 and provided with means for preventing movement in the axial direction and means for preventing rotation in the radial direction. A plurality of electrical control core wires 101 are electrically connected to each other by soldering.

An O-ring 19 is wound around the outer step 18 of the insert shell 1, and a connecting nut 20 is provided by a retaining ring 21, and a rear shell 23 is connected to the rear end of the insert shell 1 via a gasket 22. are coaxially screwed together, and a tightening nut 27 is screwed onto the rear end of the rear shell 23 via a washer 24, a gasket 25, and a washer 26, and by tightening the tightening nut 27 against the rear shell 23, the gasket is tightened. 25
This allows the composite cable to be tightened to complete the connection.

Next, the structure of a receptacle that fits into the plug according to the above structure will be explained based on FIG. 2.

In the same figure, a pipe 31 arranged in the direction of the central axis of the shell 30 is a fluid (air) introduction pipe, and a small-diameter fitting that tightly fits with the plug-side fluid introduction pipe 2 is provided on the plug-fitting side. The fitting part 32 is integrally formed with an O-ring 34 as a resilient sealing member wound around the base groove 33 of the fitting part 32. A clamp joint 35 having a tightening clamp 36 is screwed onto the side).

Insulators 37 and 38 are placed on the concentric circle of the pipe 31.
On the other hand, the inner circumferential step 39 of the insulator 38 is engaged with the outer circumferential step 40 of the pipe 31, and the outer circumferential step 41 is engaged with the inner circumferential step 42 of the shell 30. It is fixed by a retaining ring 43 attached to the front end of the object 37, and
A space 4 formed between the outer step 44 of the pipe 31 and the washer 46 of the inner step 45 of the insulator 37
7 is provided with a spring 48 that is wound around the outer periphery of the pipe 31 and serves as a resilient member, and the resilient force of the spring 48 prevents the O-ring 34 from being temporarily hardened due to hardness, etc. when mating with the plug. Even if there are variations, the pressure contact between the O-ring 34 and the funnel-shaped portion 3 of the plug-side fluid introduction pipe 2 due to the triangular groove in the radial and axial directions is maintained well, and the plug-side fluid introduction pipe and receptacle side pipe 3
1 are connected in a stable, reliable and airtight manner.

In the axial direction of the insulators 37 and 38, a plurality of pin contacts 49 that surround the pipe 31 and come into fitting contact with the plug-side contacts 15 are provided with means for preventing movement in the axial direction and means for preventing rotation in the radial direction. At the same time, an O-ring 52 is fixed in a front end circumferential groove 51 of a flange 50 for attaching to a panel or the like in the shell 30.

Next, to explain the connection procedure between the connector according to the above configuration and the composite cable (hereinafter simply referred to as cable), first, the tightening nut 27, washer 26, gasket 25,
After extrapolating the washer 24 and rear shell 23 onto the cable in this order and cutting out the sheath 100,
An electrical control core wire (hereinafter simply referred to as core wire) 101 is cut leaving a predetermined length, and then a pipe 103 is inserted into the fluid introduction tube 102 in the center of the cable to the end of the tube 102.

Next, the tightening clamp 5 of the clamp joint 4 is removed and inserted into the tube 102, and the clamp joint 4 is
While pushing the pipe 103 further into the tube 102 at the rear end, push the rear end of the clamp joint 4 into the tube 102, then tighten the tightening clamp 5 to fix the tube 102, and then tighten the core wire 101. Solder the soldered portion 16 of the socket contact 15 built into the insert shell 1, then screw the rear shell 23 into the thin insert shell 1, and then attach the washer 24 and gasket 25.
After inserting the washer 26 into the real shell 23, the tightening nut 27 is fully tightened into the rear shell 23 to complete the cable connection.

After connecting the cable in this way, if the plug is fitted into the receptacle attached to the panel etc. A and the connecting nut 20 is screwed onto the shell 30, the core wire 101 can be connected as shown in FIG. The tube 102 is electrically connected to the pin contact 49 through the socket contact 15, and at the same time, the tube 102 is connected to the pipe 31 through the pipe 2 in a completely airtight state.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the plug-side fluid introduction pipe 2 is provided with the funnel-shaped part 3, and the receptacle-side pipe 31 that fits tightly with the pipe 2 has an elastic part. An O-ring 34 as a sealing member is wrapped around the space 4 between the pipe 31 and the insulators 37 and 38.
7 is provided with a spring 48 that is wound around the pipe 31 and serves as a resilient member, so that the spring 48 is pushed forward and compressed when the plug to which the composite cable is connected is fitted to the receptacle. Due to the elastic force, the pressure contact between the O-ring 34 and the fluid introduction pipe funnel 3 due to the triangular grooves in the radial and axial directions is maintained well and stably under any usage environment of the composite cable. The connection is maintained in a highly reliable airtight state.

More specifically, when the present connector is used in an environment where heat resistance and abrasion resistance are required, instead of an elastic sealing member (O-ring 34) having physical properties that meet these usage conditions, In addition, when sending a considerable amount of high-pressure fluid, an elastic sealing member (O-ring 34) is used in conjunction with the elastic member (spring 48), but even in such a case, the elastic sealing member (O-ring 34) is replaced. Due to the action of the resilient member (spring 48), even if there are variations in hardness etc. in the elastic sealing member (O-ring 34), these are corrected by the action of the resilient member (spring 48), making it stable. The connection can be made reliably in a highly reliable airtight state, and the effects obtained by the present invention are remarkable.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a half-longitudinal cross-sectional view of a plug, Fig. 2 is a half-longitudinal cross-sectional view of a receptacle, and Fig. 3 shows a connection between a composite cable and a plug and a receptacle. It is a half-longitudinal cross-sectional view showing a state in which the ... plug, ... receptacle, ... composite cable, 2 ... fluid introduction pipe, 3 ... funnel-shaped part, 6, 7 ... insulator, 15 ... socket contact, 31 ... pipe, 34 ... Elastic sealing member (O ring), 37, 38...insulator,
48... Resilient member (spring), 49... Pin contact, 101... Electric control core wire, 102...
...Fluid introduction tube.

Claims (1)

[Scope of utility model registration request] A connector for connecting a composite cable with a plurality of electrical control core wires attached to a fluid introduction tube, comprising a plug and a receptacle, the plug comprising:
A fluid introduction pipe having a funnel-shaped portion to which a fluid introduction tube of the composite cable is connected is connected to a plurality of electrical control core wires of the composite cable arranged on a concentric circle of the fluid introduction pipe via an insulator. The receptacle has a plurality of socket contacts that are tightly fitted with the fluid introduction pipe of the plug, and the receptacle is wrapped around the pipe and has a funnel-shaped portion when tightly fitted with the fluid introduction pipe of the plug. an elastic sealing member that is hermetically pressed in the radial and axial directions; a plurality of pin contacts that are disposed on a concentric circle of the pipe with an insulator interposed therebetween and that make fitting contact with the socket contacts of the plug; wrapped around a pipe and installed between the insulator,
A composite connector comprising: a resilient member that is compressed when fitted with the plug to maintain a pressure contact between the funnel-shaped portion of the fluid introduction pipe of the plug and the resilient sealing member.