JPH0630584U - Through-head - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pipe-passing head that saves labor for cutting the tip of a pipe for inserting a sheath pipe, requires an extra length for cutting, and improves workability of inserting the sheath pipe. [Constitution] A conical portion 1 whose diameter gradually decreases as it reaches the tip.
The connecting cylindrical tube 2 fitted to the end of the insertion pipe B with respect to the sheath tube C was continuously provided at the base of the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe head that facilitates insertion of a pipe into a sheath pipe in a sheath pipe header construction method based on the principle that the shortest distance is taken as a pipe path from the header to each water tap.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 4, the tip b of the pipe a was cut obliquely with respect to the pipe axis to form a pipe head, which was easily inserted into the sheath pipe.

[0003]

[Problems to be solved by the device]

 In the conventional pipe passing head, it takes a lot of time to cut the tip of the pipe, and the pipe must be cut again at a right angle in order to connect the pipe to a joint or the like. Therefore, an extra length for cutting is required. Also, if the tip is slanted with respect to the pipe axis, there is a direction in which the pipe is pushed when inserting it into the sheath pipe, and work efficiency is poor.

The present invention has been proposed in view of the above-mentioned problems of the prior art. The purpose of the present invention is to save the labor of cutting the tip of the pipe and to provide an extra length for the cutting, which is suitable for the sheath tube. The point is to provide a through-hole head with improved insertion workability.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the through-pipe head according to the present invention has a large-diameter side base portion of a conical portion whose diameter gradually decreases toward the tip, and is connected to the end portion of the sheath pipe inserting pipe. It is configured by connecting tubular tubes in series.

[0006]

[Action]

 According to the present invention, as described above, the tip of the sheath tube inserting pipe in the through-pipe head is configured by attaching the conical portion whose diameter gradually decreases toward the tip, so that the tip of the pipe slides. And the insertion into the sheath tube is facilitated.

[0007]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. Reference numeral A denotes a pipe head, and a connecting cylindrical pipe 2 fitted at the end of the sheath pipe inserting pipe B is connected to the large-diameter side base of the conical portion 1 whose diameter gradually decreases toward the tip. A retaining ring 3 is fitted on the tubular tube 2. In the figure, 4 is a locking step portion provided at the base of the conical portion 1 for the sheath tube insertion pipe B.

Since the illustrated embodiment is configured as described above, the through pipe head A is fitted on the end portion of the sheath pipe insertion pipe B. At this time, by fitting the diameters of the pipe head A and the sheath pipe insertion pipe B together, the pipe head A can be attached to the pipe B only. According to the embodiment shown in the drawings, by attaching the through pipe head A to the tip of the sheath tube insertion pipe B, the tip of the pipe B becomes slippery, and as shown in FIG. Pipe work is easily performed. Further, since this inserting work is performed only by pushing the pipe head A, the pipe head A does not come off. Furthermore, if the pipe head is removed after pipe passage, the joints and the like can be directly connected. Yes, the pipe head is also ready for reuse.

[0009]

[Effect of device]

 As described above, in the pipe passing head according to the present invention, the connecting cylindrical pipe fitted to the end portion of the sheath pipe inserting pipe is continuously provided to the base portion of the conical portion whose diameter gradually decreases toward the tip. Since the conical portion makes the tip end of the sheath tube insertion pipe slippery, the workability at the time of inserting into the sheath tube is improved. Also, by removing the pipe head after pipe connection, it is possible to connect the joints without cutting the pipe tip, saving the labor of cutting the pipe and the extra length of the cut. Become.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional side view showing an exploded view of an embodiment of a conduit head according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a vertical cross-sectional view showing a use state of the through-pipe head according to the present invention.

FIG. 4 is a partial side view of a conventional structure.

[Explanation of symbols]

 A through pipe head B sheath pipe insertion pipe C sheath pipe 1 conical portion 2 connecting cylinder pipe 3 retaining ring 4 locking step

Claims (1)

[Scope of utility model registration request] 1. A connecting cylindrical tube fitted to an end of a sheath tube inserting pipe is continuously provided on a large-diameter side base portion of a conical portion whose diameter gradually decreases toward the tip. And through head.