JPS6025665A - Clamping tool for piping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe tightening tool that is particularly effective for tightening threaded connections of in-wall pipes in water pipes, gas pipes, and the like.

In houses, buildings, etc., pipe wrenches, pliers, and the like have conventionally been used to tighten various screw connections that require airtightness in hard pipes such as water pipes, gas pipes, and air-conditioning pipes. However, the mounting ends for connecting water faucets, gas hooks, etc. to in-wall piping must be dimensioned to fit the wall surface to avoid unsightliness, and for this reason, nipples, sockets, etc. are usually attached to in-wall piping. However, it is difficult to use the pipe wrench or pliers described above to firmly tighten these connecting pipes to the base pipe, and it has been difficult to tighten the connecting pipes by screwing them. In addition, the loose tightening force may lead to accidents such as gas leaks, and it has been very difficult to complete the piping construction as described above.

The tool of the present invention was developed as a result of solving these drawbacks, and consists of a threaded rod body and a handle.
It is characterized by having a threaded portion loosely engaged with the thread of the pipe to be tightened at the tip of the threaded rod body, and a roller bearing contact surface provided at the base of the threaded portion.

The tool of the present invention will be explained in detail below with reference to one drawing.

FIG. 1 is a partially cutaway side view of an in-wall water pipe, and FIG. 2 is a partially cut-away side view of an in-wall gas pipe. FIG. 3 is a partially cutaway side view of the male tightening tool, and FIG. 4 is a partially cutaway side view of the female tightening tool.

In the in-wall water pipe in Figure 1, there is an elbow (2) in the riser pipe (1).
) with pliers, etc., and expose it from one side of the wall (3) to the other piping hole (4).

A short double-threaded pipe (5) with threaded taps on both sides of the pipe and a double-threaded socket (6) are screwed into this elbow (2), and the faucet (7) is connected to this socket (6). It is not easy to tightly tighten and fix the screws between the elbow (2) and the double threaded pipe (5) and between the double threaded pipe (5) and the double threaded socket (6). Previously, the socket had a square hole in the middle and was tightened with an internal screwdriver, but this required a special socket and was expensive.

The tool of the present invention shown in Fig. 3 is useful for such in-wall piping, and consists of a threaded rod body (11) and a handle (12), and the tip of the threaded rod body (11) is used to attach cotton to the piping. For example, a male thread is cut as a threaded portion (13) that is loosely engaged with the screw of the double-threaded socket (6) shown in FIG.
4) is a tightening tool provided with the abutment surface (15). The roller bearing (14) is attached to the collar (of the threaded rod body (11)).
16) and the C-shaped stopper shaft (17). Handle (1
For 2), various shapes of conventionally known screw-in handles can be used, and the example shown in FIG. 3 is a sliding bar, but in addition,
Fixed T-shape, ratchet lever, hex wrench, etc. can be selected freely.

Figure 2 shows an in-wall gas piping.In the case of gas piping, as with water piping, screw the elbow (2) into the riser pipe (1) with pliers, etc., and insert it from one side of the wall (3) to the other piping hole ( 4) Peek into. For this elbow (2), a short double-threaded pipe (5) with tapped threads on both sides of the pipe.
), the male threads of the double-threaded pipes are exposed from the wall (3), and the gas hook (8) is screwed into this. In such a case, it is preferable to use a tightening tool having a female thread for the threaded portion (13) as shown in FIG. 4. The female thread of the threaded portion (13) also needs to be a female thread with a slightly larger diameter so that it can be loosely engaged with the threads of the double threaded pipe (5) shown in FIG. Furthermore, this threaded part (1
3), the contact surface (15) of the roller bearing (14) is attached to the base of the roller bearing (14).
) will be established.

The roller bearing (14) is fitted into the stepped protrusion at the tip of the threaded rod body (11), and is fixed integrally with the threaded rod body (11) with a caulking pin (19) with the female threaded pipe (18) covered on the outside. The handle (12) is also number 31 in this case! l
This is the same sliding rod as above, but a shallow retaining groove (20) is cut in the middle part, and this part is processed to be fixed with a butterfly screw (21) screwed into the threaded hole at the other end of the threaded rod (11). There is.

When tightening the double-threaded socket (6) or double-threaded pipe (5) in the wall using the tightening tool shown in Figure 3 or Figure 4, insert the threaded part (13) against the thread of the pipe to be tightened. Handle (12
) until the end face of the double-threaded socket or double-threaded pipe comes into contact with the contact surface (15) of the roller bearing (14), and then turn the handle (12) with even stronger force to tighten the elbow ( 2) Each part including the connection part is completely screwed. After tightening, remove the handle (12
) in the opposite direction, the tightening tool will return the screw without any difficulty. This is the loose threaded part (13) that is the structure of the present invention.
This is due to the tightening of pipes, etc. at the abutment surface (15) of the roller bearing (14).In addition to the wall surface shown in the example above, efficiency of general piping work and reliable pipe tightening are 1.
This was achieved by these configurations of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an in-wall water pipe, and FIG. 2 is a partially cut-away side view of an in-wall gas pipe. FIG. 3 is a partially cutaway side view of the male tightening tool, and FIG. 4 is a partially cutaway side view of the female tightening tool. (5) Double threaded pipe (6) Double threaded socket (11) Threaded rod body (12) Handle (13) Threaded portion (14) Roller bearing (15) Roller bearing contact surface and above Applicant Sohei Shirakami Agent Patent Attorney Hirozo Mori

Claims (1)

[Claims] 1 Consists of a threaded rod body (11) and a handle (12),
The threaded rod body (11) has a threaded portion (13) that loosely engages with the thread of the pipe to be tightened at the tip, and a contact surface (15) for a roller bearing (14) at the base of the threaded portion. Features a piping tightening tool.