JPH034106Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a conduit joint used for connecting conduit pipes such as a coupling or a connector.

[Prior art] Conventionally, this type of conduit joint has had through-holes protruding from both ends of the joint body into which rivets or screws can be pushed, or a ring has been tightened with a cap nut. However, in the case of the former, the disassembly work required to remove the connected conduit tubes is extremely troublesome, while in the case of the latter, the number of parts increases, making the work even more complicated. It had drawbacks such as being extremely expensive.

[Problems to be solved by the invention] This invention was devised in order to solve the above-mentioned drawbacks of conventional products, and is a joint for conduit pipes that has a small number of parts and that allows easy connection and removal of conduit pipes. We aim to provide the following.

[Means for solving the problem] This invention was devised in view of the above, and includes threading a thread along the circumferential direction on the outer peripheral surface near the end of the short pipe, and threading the thread along the circumferential direction on the inner peripheral surface of the open end. A joint body having an outwardly expanding tapered wall formed thereon, and an open end of an annular ring formed by threading a screw that engages with the above-mentioned thread on the inner circumferential surface.An open end of the short pipe on the inner circumferential surface. A plurality of elastic locking pieces are provided with a gap smaller than the wall thickness, and a plurality of elastic locking pieces extend inward in a folded manner, and each of the locking pieces has a free end portion that engages the locking pieces toward the center. It consists of a ring body with a protruding mating protrusion, and the ring body is coupled by screwing a screw into the thread of the joint body, and is engaged with the inner wall surface of the annular ring by tightening the ring body. The open end of the short pipe provided with the inclined wall is received in the small gap between the short pipe and the free end of the short pipe, and the engaging protrusion on the free end of the short pipe is pushed out toward the center, and when the tightening is released, it returns to its original state. The above-mentioned conventional drawbacks are solved by providing a joint for electric conduit which is characterized in that it is configured to be able to

[Example] Hereinafter, an example of this invention shown in the drawings will be described. Fig. 1 is a partially cutaway exploded front view showing an example of this invention, and A in the figure is a joint body, Threads 2 extending in the circumferential direction are respectively screwed onto the outer circumferential surface near the open end of the short pipe 1, and inclined walls 3 each forming an outwardly expanding tapered shape are formed on the inner circumferential surface of the open end. .

B is the ring body, and the above-mentioned thread 2 is provided on the inner peripheral surface.
A plurality of locking pieces 6 are formed on the inner circumferential surface of one end so that a gap a smaller than the wall thickness of the end of the short pipe 1 is formed. is provided in a folded manner facing inward.
An engaging protrusion 7 is provided at the tip of each of the locking pieces 6 to project toward the center at a substantially right angle.

These joint body A and ring body B have threads 3
are connected by screwing the screw 4 into the short tube 1, and when further tightened, the locking piece 6 is projected inward at the open end of the short tube 1, and an engaging protrusion 7 is provided at the free end of the tip.
It is designed so that it can protrude toward the center.

By the way, the inner peripheral surface of the short pipe 1 is made large enough to allow the insertion of the conduit C made of corrugated pipe to be connected, and the locking piece 6 facing inward is attached to the conduit C made of corrugated pipe to be connected. In order to ensure smooth insertion, the joint body A and the ring body B are screwed together, and the engagement protrusion 7 at the free end thereof is formed so as not to protrude toward the center before being further tightened. The virtual circumference formed by connecting the tips of the engaging protrusions 7 of each locking piece is formed to be substantially larger than the outer diameter of the electric conduit.

[Effects of the invention] As is clear from the above, the conduit joint of this invention has a thread extending in the circumferential direction on the outer peripheral surface near the end of the short pipe, and an outwardly expanding taper on the inner peripheral surface of the open end. The inner circumferential surface of the opening end of the ring is made up of a joint body with a slanted wall forming a shape, and a screw threaded onto the inner circumferential surface to be screwed into the above-mentioned thread. A plurality of elastic locking pieces are provided with a small gap and extend inward in a folded manner, and the free end of each locking piece is provided with an engaging protrusion pointing toward the center. The ring body is connected by screwing a screw into the thread of the joint body, and by tightening the ring body, the inner wall surface of the annular ring and the locking piece are connected to each other by tightening the ring body. The open end of the short tube provided with the inclined wall is received in the small gap, and the engaging protrusion at the free end of the tip protrudes toward the center, while being returned to its original state when the tightening is released. Therefore, in use, as shown in Figures 3 and 4, when the ring body B is unscrewed, the conduit C that is to be connected to the joint body A is inserted into the joint body A. (Fig. 4), then rotate the ring body B and tighten the screw 4 into the thread 2.
The open end of the short pipe 1 cuts into the gap and presses the locking piece 6 toward the center of the short pipe 1, and the engagement protrusion 7 formed at the tip of the locking piece 6 is inserted into the valley of the conduit C made of corrugated pipe. It will be locked. In addition, when removing the conduit C, all that is required is to release the screw, and the engagement protrusion 7 locked in the valley of the conduit C is automatically detached and released by the restoring force of the locking piece. becomes.

Therefore, in the joint for conduit of this invention, the connection and removal of the conduit is repeatedly performed by tightening and loosening the ring body B to the joint body A, and in particular, when the conduit is inserted into and removed from the joint body, the connection and removal of the conduit is performed repeatedly. Stop piece 6
Since the engaging protrusion 7 is set back from the outer periphery of the conduit and does not become an obstruction, work efficiency is significantly improved, and economical efficiency is also improved since the number of parts consists only of the joint body A and the ring body B. It is something that can be done.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway exploded front view showing one embodiment of this invention, Fig. 2 is an end view of the ring body which is the same member, Fig. 3 is a partially cutaway front view showing the same as the above in use. FIG. 4 is an enlarged cross-sectional view of the main parts showing the state in which the same as above is used. A...Joint body, B...Ring body, 1...Short pipe, 2...Thread, 3...Slanted wall, 4...Screw, 5
... Circular ring, 6 ... Locking piece, 7 ... Engagement protrusion.

Claims (1)

[Scope of utility model registration request] This is a conduit joint that connects a conduit C made of a corrugated pipe with continuous troughs on the outer circumferential surface between a joint body A and a ring body B. The ring body B has a thread 2 threaded along the circumferential direction on the outer circumferential surface, and an inclined wall 3 tapering outwardly on the inner circumferential surface of the opening end.
A plurality of gaps a smaller than the wall thickness of the open end of the short pipe 1 are provided on the inner circumferential surface of the open end of a circular ring 5 formed by screwing the screw 4 that is screwed with the thread 2 on the inner circumferential surface. A locking piece 6 having elasticity is provided inwardly in a folded manner, and a locking protrusion 7 is provided at the tip end of each locking piece 6 to protrude toward the center. The ring body B is connected by screwing the screw 4 into the thread 2 of the joint body A, and by tightening the ring body, the small gap between the inner wall surface of the ring 5 and the locking piece 6 is closed. Insert the open end of the short pipe 1 provided with the inclined wall 3 into the inside of the conduit a, and make the engaging protrusion 7 at the free end of the locking piece protrude toward the center and engage the trough on the outer circumferential surface of the conduit. While combining and restraining,
A conduit joint which can be returned to its original state by releasing the tightening and can release the connection by releasing the engagement.