JPH08112777A - Method and device for fitting soft pipe - Google Patents

Abstract

PURPOSE: To perform fitting work to a joint fitting part by ensuring strong fitting force with a soft pipe, by its hardness, left as placed in a rewound curved condition, by pulling an upper end of a lever rod, and drawing into a fit mounting part the soft pipe brought into contact with the fit mounting part. CONSTITUTION: A soft pipe R is brought into contact with a sleeve 4, inserting the soft pipe R, and taken into a receiving frame by fitting from sideward a fitting pipe holder 2. Then, a branch end of a lever rod 1 is brought into two-point contact with a back part C of a soft pipe fit mounting part B astride a joint pipe P, to connect a connector stop part 13 and a stop lever 22 by a connector 3. Next, when the lever rod 1 is pulled, the receiving frame is tilted to firmly hold the soft pipe R, further to pull the stop lever 22 through the connector 3 by the stop part 13 with a support point C serving as the operating point, so as to draw the soft pipe R into the sleeve 4. Here by displacing a fitting position of the receiving frame and further by repeating an operation of pulling the lever rod 1, the soft pipe R is fitted on the sleeve 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible pipe and a metal pipe which cannot be directly thread-cut into a pipe, such as a straight metal pipe and a polyethylene pipe which bridges the metal pipe in a bent portion of a pipe system. Or for connecting joints of flexible pipes and flexible pipes,
The present invention relates to a method and a device for fitting a flexible pipe into a joint fitting portion, which is curved due to winding during transportation and is difficult to fit into the joint fitting portion.

[0002]

2. Description of the Related Art Conventionally, in a connecting joint for a bridging pipe by a flexible pipe, a sleeve provided on the joint body is inserted into the flexible pipe, a tightening ring is fitted on the outer surface of the flexible pipe, and the tightening ring is formed according to the progress of screwing of the cap nut. The flexible tube is configured to be clamped and fixed to the sleeve, but since the long flexible tube is curved and hardened by winding during transportation, it is easy to insert the sleeve provided in the joint body into the flexible tube. Needs a fair amount of power.

In particular, when the diameter of the fitted flexible tube becomes 30 to 50 mm, it is soaked in hot water to be softened, one end is brought into contact with the sleeve of the connection joint, and the other end is tapped with a hammer to push it in.
When the both ends have a flexible pipe fitting joint structure, a great deal of labor is required, such as fitting the soft pipes soaked in hot water to soften them and fitting them from both sides.

[0004]

As described above, the work of inserting the flexible pipe by only the human hands involves extra work such as immersing the flexible pipe in hot water and correcting the curved pipe. Further, the flexible pipe is extended in the inserting direction. There is a problem that a large work area is required because a hammer is hit.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances and intends to cope with the situation. A strong fitting force, which cannot be obtained by manual labor, is secured by the force of the lever, and the hardness of the flexible pipe is Is designed to be able to be fitted into the joint fitting portion in a wound and curved state.

That is, a fulcrum is sought at the back of the flexible pipe fitting portion by using a bifurcated lever rod which can secure a fulcrum across the joint pipe, and a holding portion for holding the flexible pipe on the upper part of the bifurcated branch portion of the lever rod. By constructing a force point that acts like a seesaw by fixing the end of the connecting material that connects the upper end of the body, a strong retraction force is applied to the holding body that holds the flexible tube with the joint body sandwiched. I was able to do it.

[0007]

The fitting pipe housing frame in which the side of the frame body, which is slightly larger than the outer diameter of the fitting pipe, is opened, fits loosely from the side of the flexible pipe to be the fitting pipe, and inserts this inside the frame. Although it is pulled in, the connecting body fastening rod at the upper end is pulled by the pulling of the lever rod, the whole housing frame is inclined, and the inner edge of the frame upper and lower is crimped to the upper and lower outer peripheral surfaces of the flexible pipe, The bending force acts on the bending direction of the flexible tube, and the flexible tube is gripped and acts as a pulling force to the fitting portion.

When the lever is pulled back, the crimping of the frame to the outer peripheral surface of the flexible tube is immediately released. Therefore, by shifting the fitting position of the frame by the pulling width of the lever and repeating the pulling operation, The bending and the fitting of the flexible pipe are simultaneously performed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 is a lever rod body, and the tip side has a bifurcated structure capable of securing a fulcrum across the joint pipe P, and its branch ends 11, 11
Is a fulcrum by abutting two points on the back portion C of the flexible pipe fitting portion B set in the joint A.

Since the fulcrum contact portions of the branch ends 11, 11 of the lever rod 1 are formed in a spherical shape and the inner portion of the bifurcated structure which is in contact with the joint pipe P is formed in a curved shape, the operation of the lever rod 1 is facilitated. At the same time, the sliding contact surfaces of the joint pipe P and the like that are in contact with each other are not damaged.

A connecting body fastening portion 13 such as a wire is provided at an upper position of the bifurcating branch portion 12 of the lever rod 1, and the upper ends of the lever rod 1 and the fitting pipe holding body 2 are connected by a connecting body 3 such as a wire. It is designed to be connected.

The fitting tube holding body 2 is provided with a connecting body fastening rod 22 on an upper portion of a fitting pipe housing frame 21 which is open to the side, and a lever rod 1 is provided.
The connection body 3 from is fixed. Reference numeral 31 is a fastener that adjusts the connecting length of a connecting body such as a wire and detaches from the fastening rod.

The fitting tube holding body 2 is loosely fitted from the side of the flexible tube R, which serves as a fitting tube, and the fitting tube holding body 2 is held in the housing frame 21, and the lever rod 1 holds the connecting body fastening rod 22. When the container is pulled, the entire housing frame tilts, and the inner edges of the upper and lower frames are flexible pipes R
The upper and lower outer peripheral surfaces are crimped and fixed. The inner side of the housing frame 21 is formed in a curved shape similar to the inner part of the bifurcated structure of the lever rod 1 so as not to damage the sliding contact surface of the flexible tube R which is in contact therewith. It should be noted that this fitting tube holding body is only one embodiment, and needless to say, it may have a fitting tube holding structure corresponding to the pulling of the lever rod 1.

The joint body A into which the flexible tube R is fitted has a sleeve 4 into which the flexible tube R is inserted on the tip side and a cap nut 5 on the outside thereof.
A screwing portion 41 that is screwed with is provided, and a joint pipe P made of a flexible pipe or a metal pipe is mounted on the rear end side.

First, the flexible tube R is brought into contact with the sleeve 4 into which the flexible tube R is inserted, the fitting tube holding body 2 is fitted from the side, and the flexible tube R is inserted into the housing frame 21. Next, the branch end 11 of the lever rod 1,
11 is straddled over the joint pipe P and abuts on the back portion C of the flexible pipe fitting portion B at two points to connect the coupling body fastening portion 13 and the fastening rod 22 by the coupling body 3.

When the lever rod 1 is pulled, the housing frame 21 is inclined and holds the flexible pipe R, and further, the fastening portion 13 pulls the fastening rod 22 via the connecting body 3 as the point of action of the fulcrum C. The flexible tube R is pulled into the sleeve 4. Therefore, by shifting the fitting position of the housing frame 21 and further repeating the pulling operation of the lever rod 1,
The flexible tube R is attached to the sleeve 4.

Reference numeral 6 denotes a tightening ring, which is provided with tapered edges at the front and rear, and the tightening ring 6 is inserted in the gap between the threaded portion and the flexible pipe R inserted into the sleeve 4 as the cap nut 5 advances. Of the flexible nut R is pushed between the tapered hole provided inside the front end of the cap nut 5 and the outer diameter of the flexible pipe R, so that the flexible pipe R is outside. It is fixed by tightening from the diameter.

[0018]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the force of the lever secures a strong fitting input which cannot be obtained by manual work when inserting the flexible tube into the sleeve or the like, and depending on the hardness of the flexible tube. Since fitting work into the fitting fitting part can be performed while the winding and bending state is maintained, wasteful labor and work can be largely omitted.

[Brief description of drawings]

FIG. 1 is an overall side view with a notched cross section of a main part showing a relationship between a flexible pipe fitting device according to the present invention, a cap nut, a tightening ring, and a joint body before inserting a flexible pipe and tightening a cap nut.

FIG. 2 is a front view of the lever lever showing the relationship between the lever lever and the joint body.

FIG. 3 is a front view of the fitting tube showing the relationship between the fitting tube holding body and the fitting tube.

[Explanation of symbols]

 1 Lever lever main body 11 Lever lever branch end 12 Lever lever bifurcated branch 13 Lever lever joint body fastening part 2 Fitting tube holding body 21 Fitting tube housing frame 22 Fitting body fastening rod 3 Connection body 31 Connection Body stopper 4 Sleeve 41 Threaded part to be screwed with cap nut 5 Cap nut 6 Tightening ring A Joint body B Flexible pipe fitting part C Back of flexible pipe fitting part P Joint pipe / Flexible pipe / Metal pipe R Fitting Incorporated pipe / flexible pipe

Claims (3)

[Claims] 1. An end portion of a connecting body for connecting an upper end of a fitting pipe holding body is fixed to an upper portion of a branch portion of a bifurcated lever rod straddling a joint pipe, and a joint is attached to a back portion of a flexible pipe fitting portion. Stretching the flexible pipe that is in contact with the fitting portion by pulling the upper end of the lever lever with the connecting point of the connecting body as the point of action and pulling the upper end of the lever lever into contact with the branch end of the bifurcated lever lever. Flexible tube fitting method characterized by 2. A bifurcated lever rod that straddles the joint pipe and a holding body that holds the fitting pipe. The connecting body fastening portion and the fitting pipe holding body that are provided at an upper position of the lever rod branching portion. Flexible pipe fitting device with upper end connected by a connecting body 3. A fitting pipe holding body in which a connecting body fastening rod such as a wire is provided at an upper end of a fitting pipe housing frame in which a side of a frame body slightly larger than an outer diameter of the fitting pipe is opened. The flexible pipe fitting device according to claim 2, which is configured as a holding pipe holding rod.