JPH0110102Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flexible pipe end face processing tool.

Conventionally, Japanese Patent Publication No. 56-17172 is known as a cutting surface flaring device for a spiral metal flexible pipe.

However, this flaring device had many drawbacks as follows. That is, the internal receiving fitting that is directly fitted onto the flexible pipe and the external hollow cylindrical body into which the internal receiving fitting is inserted are completely separate members, and are configured to be disassembled and attached to and removed from the flexible pipe. Because of this, parts may be dropped before or after work, causing them to be lost or damaged.

Since the external hollow cylindrical body with the internal thread is a one-piece body that cannot be swung open and closed, for example, if there is a gap between the lower end surface of the external thread of the tightening nut and the distal end surface of the flexible tube, flaring may be required. It is also necessary to tighten any gaps that are not directly related to the nut in order to screw the external threaded part of the nut. Furthermore, after flaring, the tightening nut cannot be removed unless the threaded area is rotated in the opposite direction, resulting in extremely low work efficiency.

Since there are many parts, it is difficult to hold and handle by hand.
Work efficiency is even worse.

Since the external hollow cylindrical body has no protruding parts or levers, it is easy to rotate when rotating the tightening nut (the external hollow cylindrical body must be gripped firmly by hand or fixed to other parts with a vice, etc.) ).

The purpose of this invention is to solve these problems, to enable easy and quick sealing surface processing without requiring any skill, to reduce the number of parts, to make handling easier, and to prevent parts from falling or being lost. do. The purpose is to create a beautiful, smooth and uniform sealing surface so that no fluid leakage occurs.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIGS. 1 to 4, reference numeral 1 designates a flexible pipe used as a pipe for water supply, hot water supply, etc., and is formed into a bellows-like shape with alternating peaks 2 and troughs 3. The material generally used is metal such as stainless steel. A flexible pipe end surface processing tool 30 for processing this includes a pipe holder 5 for holding and fixing the pipe 1, and an end surface pressing tool 7 for pressing and crushing the end surface 6 of the pipe 1 to be processed.

Generally, as shown in FIG. 6, the end of the flexible pipe 1 is formed by flattening the two peaks 2 in the front and back.
A smooth end surface 6 must be formed to ensure a sealed state when crimped onto the sealing member 8, and furthermore, the outer diameter must be smaller than the original outer diameter of the peak 2 due to being flattened. It is necessary to increase the size and form a locking outer flange 11 on which the cap nut 9 is locked. (Note 10 is a male plug into which the cap nut 9 is screwed.) In this way, the flexible pipe end face processing tool according to the present invention is used to form the hooking outer flange 11 and the smooth end face 6 for sealing. However, in the illustrated example, the pipe holder 5 includes a pair of clamping halves 13, 1 having a processed recess 12 with a semicircular cross-sectional shape.
3 are pivotally connected to each other by a pivot shaft 14 so as to be able to swing open and close, and each of the clamping halves 13 has a gripping rod 15 protruding outward. When the clamping halves 13, 13 are closed, the gripping rods 15, 15 are close to each other and are approximately parallel to each other. Further, a gripping portion 16 is fixed to the middle or the tip of the gripping rod 15 in a covering manner using an elastic material such as rubber.

Specifically, the machined recess 12 having a semicircular cross section of each of the clamping half bodies 13 has a central portion 3 in which the peak portion 2 of the flexible pipe 1 is held in a fitted manner.
A book groove 17 is formed, and in FIG. 2, a large diameter portion with a stepped portion 18 is formed above the central small diameter portion 20 of the groove 17. is a female threaded portion 19 from the upper end to the vicinity of the stepped portion 18. Further, a pipe insertion side large diameter portion 22 is formed below the small diameter portion 20 and has a stepped portion 21 . The central small diameter portion 20 corresponds to the protruding position of the gripping rod 15.

If the clamp is moved from the imaginary line in FIG. 1 or the open state shown in FIGS. 2 and 3 to the solid line in FIG. 1 or the closed state shown in FIG. A small-diameter hole portion into which the pipe 1 is tightly fitted is formed, and a female threaded hole with a continuous spiral thread is formed in the female threaded portions 19, 19. In addition, large diameter part 2
Large-diameter play holes are formed at 2 and 22.

However, the pipe holder 5 in such a closed state
a pressing body 24 having a male threaded portion 23 that screws into the female threaded hole formed in the female threaded portion 19;
A male threaded portion 2 protrudes from the pressing body 24.
Lever body 25 installed perpendicular to the axis of No. 3
Thus, the end face pressing tool 7 is constructed. Specifically, a hole 26 is provided in a part of the pressing body 24 in a direction perpendicular to the axis, and the body 25a of the lever body 25 is inserted into the hole 26 so as to be slidable in the axial direction. In addition to caulking the tip of the portion 25a to prevent it from coming off,
A grip part 16 made of an elastic material such as rubber is fixed to the other end. Moreover, the end surface of the male threaded portion 23 is a pressing end surface 27 that presses and crushes the processed end surface 6 of the flexible pipe 1 held in the groove 17 (as shown in FIGS. 3 and 5). .

To explain how to use the end face processing tool 30 configured as described above, firstly, the method shown in FIGS.
As shown in the figure, insert the two peaks 2, 2 from the end face 6 of the flexible pipe 1 deeper than the stepped part 18,
Fit the third to fifth peak parts 2 into the grooves 17 of the small diameter part 20, and then insert the male threaded part 23 of the pressing body 24 of the end presser 7 into the pipe holder 5. The half circumferential portion of the female threaded portion 19 is screwed together.
After that, hold the gripping rod 15 in your hand and swing it around the pivot shaft 14 to hold the gripping halves 13 and 1 of the pipe holder 5.
3 is closed, the state shown in Fig. 4 is achieved, and the entire circumference of the pipe 1 is securely held in the small diameter portion 20, and the male threaded portion 23 is securely held all around the circumference by the female threaded hole formed by the female threaded portions 19, 19. It is in a screwed state. Therefore, as shown by arrow A in the figure, if the lever body 25 of the pressing tool 7 is grasped and rotated with the other hand, and the pressing body 24 is screwed into the female threaded hole and pushed in, the pressing end surface 27 is directly pressed. Being strongly pressed by the processed end surface 6 of the pipe 1, the two peaks 2, 2 are flattened to form a hooking outer flange 11 and a smooth end surface for sealing. As shown in FIG. 5, by holding the gripping rods 15, 15 and opening the clamping halves 13, 13, the end of the pipe 1 and the pressing body 24 can be quickly and easily processed.
can be removed.

It should be noted that the present invention is of course not limited to the illustrated embodiment, and the number of grooves 17 in the small diameter portion 20 can be freely increased or decreased. , 13 in a closed state is preferably added separately. Furthermore, the number of peaks 2 to be crushed to form the outer hooking flange 11 can be increased or decreased, and can be changed depending on the purpose, type and size of the seal, etc.

As described in detail above, the present invention provides a machined recess 12 having a semicircular cross-sectional shape and a small diameter portion 20.
A pair of clamping halves 13, 13 formed by the above are pivotally connected to each other by a pivot shaft 14 so as to be able to swing open and close, and the peak portion 2 of the flexible pipe 1 is attached to the small diameter portion 20 of the processed recess 12. Concave groove 17 in which ... is held in a fitted manner
At the same time, a female threaded portion 19 is formed in the large diameter portion of the processed recess 12 above the small diameter portion 20, and a clamping rod 15 is formed in at least one of the pair of clamping halves 13, 13. A pipe holder 5 protruding outward; a male threaded portion 23 screwed into the female threaded hole formed by the female threaded portion 19 in the pipe holder 5 in the closed state;
An end surface pressing tool 7 consisting of a pressing body 24 having a pressing end surface 27 that presses the end surface 6 to be processed of the flexible pipe 1 held at . Because it is constructed from the following, it is possible to easily and quickly process the end face of flexible pipes in all types of piping work, such as water supply work for shower pots and solar systems, without requiring any skill at all, and improving work efficiency. A remarkable improvement was achieved, and the processed end surface 6 to which the sealing member came into pressure contact was smooth and beautiful, and the fluid sealing performance was also significantly improved. In particular, when compared with the conventional method disclosed in Japanese Patent Publication No. 56-17172, etc., the following significant unique effects are achieved.

The concave groove 17 into which the peaks 2 of the flexible pipe 1 are fitted and the female threaded part 19 can be split into halves and swing open around the pivot shaft 14, so that the pipe 1 can be easily and quickly installed and removed. At the same time, in the open state of the clamping halves 13, 13,
The male threaded portion 2 of the end pressing tool 7 is attached to the end surface 6 of the pipe 1.
Fit the pipe 1 into the groove 17 so that the pressing end surface 27 of the pressing tool 7 comes into contact with the pipe 1, and screw the male threaded part 23 of the pressing tool 7 into the female threaded part 19 of one of the clamping halves 13. By rotating the pressing tool 7 with the holder 5 in the closed state, the outer hook flange 11 can be formed on the pipe 1 with the minimum screw dimension. ,
When the clamping halves 13, 13 are opened, the pressing tool 7 can be removed by moving in the direction orthogonal to the axis without screwing the male threaded portion 23 back. Therefore, the working efficiency of this processing tool is significantly improved (compared to the conventional method).

Since the concave groove 17 and the female threaded portion 19 are both formed on the pair of clamping halves 13, 13, there are no small parts that fall unexpectedly, which prevents the loss of parts and also prevents damage to the parts. Not only can this be done, but it is also easy to handle.

Hold the gripping rod 15 and lever body 25 with your hands,
It can give you strong power. There is no need to fix the pipe holder 5 with a vise or the like, and the work can be easily done with both hands.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a plan view showing the disassembled state, Fig. 3 is a plan view explaining how to use, Fig. 4 is a plan view showing the state in the middle of processing, Fig. 5 is a plan view showing the state immediately before completion of processing, and Fig. 6 FIG. 2 is a partially sectional front view showing an example of how to use the pipe. 1...Flexible pipe, 2...Mountain part, 5...
...Pipe holder, 6... End face to be processed, 7... End face presser, 12... Machining recess, 13... Holding half,
14... Pivoting shaft, 15... Gripping rod, 17... Concave groove, 19... Female threaded portion, 20... Small diameter portion, 23...
...Male thread portion, 24...Press body, 25...Lever body, 27...Press end surface.

Claims (1)

[Claims for Utility Model Registration] A pair of clamping halves 13, 13 each having a semicircular cross-sectional shape and a machined recess 12 having a small diameter portion 20 are swung around a pivot shaft 14. The small diameter portion 20 of the processed recess 12 is pivotably connected to be openable and closable.
A concave groove 17 is formed in which the peak portions 2 of the flexible pipe 1 are fitted and held, and a female threaded portion 19 is formed in the large diameter portion of the machined recess 12 above the small diameter portion 20. and a pair of the above-mentioned clamping halves 1
A pipe holder 5 having a clamping rod 15 protruding outward from at least one of the pipe holders 3 and 13, and a pipe holder 5 that is screwed into a female threaded hole formed by the female threaded portion 19 in the pipe holder 5 in the closed state. a pressing body 24 having a male threaded portion 23 and a pressing end surface 27 that presses the processed end surface 6 of the flexible pipe 1 held in the groove 17; A flexible pipe end face processing tool comprising: an end face pressing tool 7 comprising a lever body 25;