JPS585373Y2 - Oil-proof and waterproof connector for coated flexible conduit - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oil-proof and waterproof connector for a flexible electrical conduit that is coated with a synthetic resin or the like.

Recently, synthetic resin (vinyl, etc.) or rubber has been added to the outer periphery of flexible conduits to protect the wires inserted into flexible conduits (flexible tubes, class 2 flexible tubes, etc.) from oil, water, dust, etc. Recently, flexible tubes coated with such materials have come into widespread use.

However, the current situation is that there is no definitive product for the connectors on both ends used during installation, and users are having a hard time.

The present invention does not rely on the conventional method of cutting part of the synthetic resin (vinyl, etc.) covering on the surface of the flexible tube, but instead assembles the cut parts as they are without cutting them and completely fixes them into one piece. The structure is such that a tightening nut or the like is pushed into the end of the flexible tube, and then a pawl is provided on the surface in contact with the inner periphery of the flexible tube of the double cylindrical body to be screwed into the inner circumferential spiral of the flexible tube, and the head is tightened. An in-collar made of an elastic material baked along the outer periphery of the end is screwed onto the inner circumference of the flexible tube so that the claws are engaged with the inner circumference of the flexible tube, and the inner wall of the double cylinder body sandwiches the end of the flexible tube. Push the part into the fitting body,
Tightening is done by screwing together the inner thread of the nut and the outer thread of the joint body.

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

In FIG. 1, the connector basically consists of a joint body 2, a lock nut 3, an inner collar 1, an umbrella ring 5, and a cap nut 4.
, the bag nut 4 is the same as the known one, but the in collar 1, which is important in the present invention, is a double cylinder body 7 made of metal and having a U-shaped cross section, as shown in FIGS. The cylinder wall 7a of the double cylinder body 7, which is in contact with the inner peripheral spiral 13 of the flexible tube 6, is provided with a pawl 9 that screws into the inner peripheral spiral 13 of the flexible tube 6, and the opening side end of the double cylinder body 7 An elastic ring 8 made of rubber or synthetic resin is baked around the outer part through a portion 10.

Then, the cap nut 4 and the umbrella ring 5 are pushed into the outer periphery of the cut flexible tube end covered with vinyl 14 or the like.
Next, the in-collar 1 is inserted from the head rubber portion 8 of the in-collar 1 so that the end of the flexible tube is sandwiched between the cylindrical walls 7a and 7b of the double cylindrical body 7, and the claw 9 is attached to the inner circumference of the flexible tube in a spiral manner. The connector is screwed in such a way that they fit together, the opposite side of the rubber part 8 is pushed into the inside of the joint body 2, and the internal thread 11 of the cap nut 4 and the external thread 12 of the main body 2 are screwed together to assemble the connector as a whole.

Since the present invention is constructed in this way, that is,
Since it is shaped like a double cylinder, it can be assembled without peeling off the vinyl covering of the flexible tube, which simplifies the process, and the claws provided on the tube bite into the inner circumferential spiral of the flexible tube. Therefore, it is stable, and in other words, it is effective in oil-proofing, waterproofing, and dust-proofing by tightening by baking the elastic body.

Another advantage is that the number of parts is small, and management and assembly are completely fixed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an assembled front view of the upper half of the assembly, FIG. 2 is a side view of the inner collar, and FIG. 3 is a front upper half of the inner collar. In the drawing, 1 is an inner collar, 2 is a joint body, 3 is a lock nut, 4 is a tightening nut, 5 is an umbrella ring, 6 is a flexible tube, 7 is a double cylinder body, and 7a and 7b are inside the double cylinder body. wall, 8
9 is the elastic body, 9 is the pawl, 10 is the seizing part, 11 is the inner thread of the nut for tightening, 12 is the outer thread of the joint body, 13 is the inner peripheral spiral of the flexible tube, and 14 is the coating. .

Claims (1)

[Scope of utility model registration request] Tightening is done by pushing a nut or the like into the end of the flexible tube, and then providing a pawl on the surface that touches the inner periphery of the double-cylindrical flexible tube to screw into the inner spiral of the flexible tube, and attaching a pawl to the outer periphery of the head end. Screw in the inner collar, which is made by baking an elastic material along the inner circumference of the flexible tube, so that the claws are engaged with the screws on the inner circumference of the flexible tube, and so that the inner walls of the double cylinder sandwich the ends of the flexible tube, and connect the ends. Oil-proof and waterproof connector for coated flexible conduit that is pushed into the body and tightened by screwing together the inner thread of the nut and the outer thread of the fitting body.