JPH109470A - Clamp in pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a pipe joint to make its required installation space narrower, and simplify the opening and closing operation of a clamp using a lever action and its operation directional ability by forming a clamp for the pipe joint composed of a male and a female pipe into a special shape and using it for a female joint pipe. SOLUTION: A projecting part to protrude toward a peripheral outside is formed at the branching point of each arm of a clamp formed of an elastic body, and the required part of each arm protruding in about U-shape from the projecting part is bent toward a peripheral inside to a required angle and mutually opposed, and the clamp is engaged on a female joint pipe suitable to the above shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener for a joint portion in a pipe joint for fluid or the like.

[0002]

2. Description of the Related Art Conventionally, there are various types of fittings and fittings for pipe fittings using a bearing as a fitting,
Alternatively, a U-shaped locking piece is mainly used. (For example, Japanese Utility Model Publication No. 61-32887. Japanese Utility Model Application Publication No. 61-57226)
No.).

[0003]

In the case of a conventional fastener having a bearing, the shape thereof is large in structure, and the joint is separated by moving the separation sleeve back and forth in the axial direction to form a U-shape. All of the locking pieces have an operating direction in order to move the protrusion of the locking piece back and forth in the vertical axis direction. Especially, in the case of the locking piece, when the joint is attached to a flexible hose, twisting, etc. As a result, the direction of the operation convex portion of the locking piece changes, and therefore, there are many problems in mounting and operating both in a narrow installation space, for example, in a flow hose of a motorcycle.

[0004]

At the bifurcation point of each arm formed of an elastic body, a projecting portion projecting outward is formed, and a required portion of each arm projecting in a substantially U-shape from the projecting portion is formed around the projecting portion. Turn it inward at the required angle to face it.

[0005] In addition, a required portion and a tip of each arm are turned inward at a required angle toward the inside of the circumference to be opposed to each other.

Further, required portions of the arms are opposed to each other substantially in parallel.

[0007] Also, required portions of the respective arms are opposed to each other substantially in parallel, and the ends thereof are rolled inwardly at a required angle.

The female pipe is provided with notch grooves penetrating the inner and outer diameters and facing each other at a required angle, each stopper arm is engaged with the outer periphery of the non-notch groove portion, and each locking arm is bridged over each notch groove. A part of each locking arm protrudes into the female tube and is locked.

Further, an outer peripheral groove is provided on the outer periphery of the female pipe, and a notch groove penetrating the inner and outer diameters and facing at a required angle is provided in the outer peripheral groove, and each stopper arm is engaged with a valley peripheral diameter portion of the non-notched groove portion. The locking arms are extended over and locked in the respective notched grooves, and a part of each locking arm projects and locks into the female pipe.

Further, a sleeve which engages with the outer periphery of the cutout groove of the female pipe and a required outer periphery of the outer peripheral groove, slidably rotates, and engages with the stopper to rotate continuously is covered by the stopper.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A stopper according to the present invention is formed of thin spring steel having an applied strength, and has a projection 1 protruding outward at the branch point of each arm. The required parts of the arms that come out are turned inward at the required angle to face each other.

[0012] Further, the tip of each arm is turned inward at a required angle to inward.

Further, required portions of the respective arms projecting in a substantially U-shape from the protrusion 1 are opposed to each other substantially in parallel.

Further, the ends of the respective arms are turned to the inner side at a required angle to face each other.

The female pipe 4 is provided with notch grooves 5 penetrating the inner and outer diameters and facing each other at a required angle, and each stopper arm 2 is engaged with an outer peripheral portion of the notch groove 5 having no notch. Each locking arm 3 is bridged and engaged with each notch groove 5, and a part of each locking arm 3 is locked while projecting through each notch groove 5 into the female pipe 4.

Further, an outer peripheral groove 9 is provided on the outer periphery of the female pipe 4, and a notch groove 5 which penetrates the inner and outer diameters at a predetermined angle is provided in the outer peripheral groove 9, and a valley peripheral portion having no notch groove 5 is provided. Then, each stopper arm 2 is engaged, each locking arm 3 is bridged and engaged with each notch groove 5, and a part of each locking arm 3 is inserted into the female pipe 4 through each notch groove 5. Locked in a protruding state,

A sleeve 6 which engages with the outer periphery of the cutout groove 5 of the female pipe 4 and a required portion of the outer periphery of the outer peripheral groove, slidably rotates, and engages with the stopper to rotate continuously, is used as a stopper. Lay it down.

[0018]

1 (a) and 1 (b), each locking arm 3.3, which is located in a U-shape from a locking projection 1 and is located in front of a required portion of each locking arm 2.2, is required to face inward. Face each other at an angle. FIG.
In the embodiment shown in (a) and (b), the female pipe 4 is provided with a notch groove 5.5 penetrating the inner and outer diameters and facing each other at a required angle, and each stopper arm 2. 2 is engaged, and each locking arm 3.3 is bridged and locked in each notch groove 5.5,
A part of each locking arm 3.3 is inserted into each female groove 4 through each notch groove 5.5.
It is locked while protruding inside. 3 (a) and 3 (b), a notch groove 5.5 is formed in the outer circumferential groove 9 provided on the outer circumference of the female pipe 4 so as to penetrate the inner and outer diameters and face each other at a required angle. The stop arm 2.2 is engaged with the valley peripheral diameter portion of the outer peripheral groove, and each lock arm 3.3 is bridged and locked in the notch groove 5.5, and each lock arm 3.3 is locked. Are locked in such a manner that a part of them protrudes into the female tube through each notch groove 5.5. In the implementation shown in FIG. FIG. 10 is a view in which the stopper projection 1 of the embodiment is rotated in the direction of the arrow, and by rotation, one locking arm 3 is opened with one end A of the female tube cutout groove 5 as a fulcrum, and The stop arm 3 opens with one end B as a fulcrum, and the stopper projection 1
When it is released, it returns to the state shown in Fig. 2.3 due to elasticity. In addition, when rotated in the opposite direction, C.I. 2. Each locking arm with D as a fulcrum
3 opens. In the embodiment shown in FIG. 5, the female pipe 4 engages with the outer periphery of the notch groove 5.5 and a required part of the outer periphery of the outer peripheral groove 9 to smoothly rotate, and engages with the stopper to continuously rotate. The sleeve 6 is covered on the stopper. In the embodiment shown in FIG. 6, each of the locking arms 3.3 at a required portion of each of the stopper arms 2.2 projecting in a substantially U-shape from the stopper projection 1 is turned inward at a required angle, and furthermore, Bend the tip of the arm inward. In the embodiment shown in FIG.
5.5 notch grooves penetrating the inner and outer diameters and facing each other at a required angle
Is provided, the stopper arm 2.2 is engaged with the outer peripheral portion without the notch groove, each locking arm 3.3 is bridged over each notch groove 5.5, and each locking arm 3.3 is A part of the arm is engaged so as to protrude into the female tube through each notch groove 5.5, and the inwardly curved portion of each arm tip is engaged with the outer peripheral portion of the female tube 4. FIG. 8 shows that each of the locking arms 3.3, which is ahead of a required portion of each of the stopper arms 2.2 that protrudes in a substantially U-shape from the stopper projection 1, is opposed substantially in parallel. FIG. 9 shows the stopper projection 1.
From the required part of each stopper arm 2.2 which comes out in a substantially U-shape from
The locking arms 3.3 are opposed substantially parallel to each other, and the ends of the arms are bent inward. FIG. FIG. 9 is a diagram showing the engagement between the male pipe 7 and the female pipe 4 and the locking arm 3.3, in which the male pipe 7 is inserted into the female pipe 4 and each of the locking arms 3.3 is inserted into the male pipe engaging groove 8; Locks and connects each tube. FIG. FIG. 6 is a diagram showing the engagement between the male pipe 7 and the female pipe 4 and the engagement between the locking arm 3.3 and the sleeve 6. The locking arm 3.3 of the stopper covering the sleeve 6 is engaged with the engagement groove 8 of the male pipe. It stops and connects each pipe.

[0019]

The present invention is embodied in the form described above and has the following effects.

Mainly, by using a small fitting formed of an elastic material having a required strength for a pipe joint for a constant-pressure fluid, the joint is reduced in size to save space.

Each of the arms is bent substantially in a triangular shape by fitting a stopper having each locking arm bent inward into a notch groove provided in the female pipe so as to match the bending angle of the locking arm. Each locking arm is opened by turning the stopper projection by a small amount by leverage without locking because the notch groove and female tube are locked by holding the female tube with elastic force, returning to the holding shape when released. Further, when the ends of the locking arms are bent inward, the holding state is further improved.

Further, a stopper for a pipe joint is formed of an elastic wire, an elastic steel plate, or a resin material in the shape described above, and the joint can be separated by rotating the stopper a small amount to the left or right. Further, a sleeve for engaging the stopper and rotating the stopper is provided on the female pipe, thereby improving operability.

When the locking arms are arranged in parallel, the holding portion is provided longer, so that the holding state is further improved.

Further, when a stopper is fitted into an outer peripheral groove provided in the female pipe, a lateral displacement at the time of opening / closing operation can be eliminated, and the operation can be further stabilized.

In addition, by covering the sleeve which engages with the stopper and the female pipe so as to interlock with each other, the stopper is completely prevented from falling off, and the opening operation can be performed by the minute left and right rotation of the sleeve. Improve the quality.

[0026]

[Brief description of the drawings]

FIG. 1a is a front view of a stopper according to the present invention.

FIG. 1b is a side view of the fastener of the present invention.

FIG. 2a shows the engagement of the female member with the stopper according to the present invention, wherein the female tube is a sectional view and the stopper is a front view.

FIG. 2b is a side view showing the engagement between the stopper and the female pipe according to the present invention.

FIG. 3a shows the engagement between the stopper and the female outer peripheral groove of the present invention, wherein the female pipe and the outer peripheral groove are sectional views and the stopper is a front view.

FIG. 4 is a sectional view showing the female pipe when the stopper of the present invention is rotated, and the stopper is a front view.

FIG. 5 shows the engagement of the stopper, the female tube and the sleeve of the present invention, wherein the female tube and the sleeve are sectional views and the stopper is a front view.

FIG. 6a is a front view of the stopper of the present invention in which the tips of the locking arms are bent inward.

FIG. 6b is a side view in which the tip of each locking arm of the fastener of the present invention is bent inward.

FIG. 7 shows the engagement between the female pipe and the stopper in which the tip of each locking arm of the stopper of the present invention is bent inward, wherein the female pipe is a sectional view and the stopper is a front view.

FIG. 8a is a front view in which respective locking arms of the fastener of the present invention are opposed in parallel.

FIG. 8b is a side view in which the locking arms of the fastener of the present invention face in parallel.

FIG. 9a is a front view of the fastener of the present invention in which the tips of the parallel opposing locking arms are bent inward.

FIG. 9b is a side view of the stopper according to the present invention in which the ends of the parallel opposing locking arms are bent inward.

FIG. 10 is a cross-sectional view showing the engagement between the fastener of the present invention, a male pipe, and a female pipe.

FIG. 11 is a cross-sectional view showing engagement of the fastener of the present invention, a male pipe, a female pipe, and a sleeve.

[Description of Signs] 1 Stopper protrusion 6 Sleeve 2 Stopper arm 7 Male pipe 3 Locking arm 8 Locking groove 4 Female pipe 9 Outer circumferential groove 5 Notch groove

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[Procedure amendment]

[Submission date] August 30, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a front view of a fastener according to the present invention, wherein (a) is a front view,
(B) is a side view.

FIGS. 2A and 2B show the engagement between the fastener and the female pipe of the present invention, and FIG.
The stopper is a front view, and the female pipe is a sectional view. (B) is a side view.

FIG. 3 shows the engagement between the stopper of the present invention and the outer circumferential groove of the female pipe,
(A) A stopper is a front view, and a female pipe and an outer peripheral groove are sectional views. (B) is a side view.

FIG. 4 is a cross-sectional view of the female pipe when the stopper of the present invention is rotated, and the stopper is a front view.

FIG. 5 shows the engagement of the stopper, the female tube and the sleeve of the present invention, wherein the female tube and the sleeve are sectional views and the stopper is a front view.

FIGS. 6A and 6B are diagrams in which a tip of each locking arm of the fastener of the present invention is bent inward, FIG. 6A is a front view, and FIG. 6B is a side view.

FIG. 7 shows the engagement of the female tube with the stopper in which the tip of each locking arm of the stopper of the present invention is bent inward, wherein the female tube is a sectional view and the stopper is a front view.

FIGS. 8A and 8B are diagrams in which respective locking arms of the fastener of the present invention are opposed in parallel, (a) is a front view, and (b) is a side view.

9A and 9B are diagrams in which the ends of each of the locking arms of the stopper of the present invention that face in parallel are bent inward, FIG. 9A is a front view, and FIG.
Is a side view.

FIG. 10 is a cross-sectional view showing the engagement of the stopper, the male pipe, and the female pipe according to the present invention.

FIG. 11 is a cross-sectional view showing engagement of the stopper, the male pipe, the female pipe, and the sleeve according to the present invention.

[Description of Signs] 1 Stopper projection 2 Stopper arm 3 Locking arm 4 Female pipe 5 Notch groove 6 Sleeve 7 Male pipe 8 Locking groove 9 Outer peripheral groove

Claims (7)

[Claims] 1. A projecting portion projecting outward from a periphery is formed at a branch point of each arm formed of an elastic body, and a required portion of each arm, which is substantially U-shaped from the projecting portion, is formed at a required angle inside the periphery. A fastener in a pipe joint that is opposed to each other. 2. The fitting according to claim 1, wherein a required portion of each arm and a distal end are turned inward at a required angle toward the inside of the circumference to face each other. 3. The fitting according to claim 1, wherein required portions of the arms are substantially parallel and opposed to each other. 4. A required portion of each arm is opposed substantially in parallel,
2. The fitting according to claim 1, wherein the distal end is rounded inward at a required angle. 5. A female pipe is provided with a notch groove penetrating the inner and outer diameters and facing each other at a required angle, each stopper arm is engaged with the outer periphery of the non-notch groove part, and each locking arm is fitted in each notch groove. A stopper in a pipe joint which is suspended and locked, and a part of each locking arm protrudes into the female pipe and is locked. 6. An outer peripheral groove is provided on the outer periphery of the female pipe, and a notch groove which penetrates the inner and outer diameters and opposes at a required angle is provided in the outer peripheral groove,
Each stopper arm was engaged with the valley peripheral diameter portion of the non-notched groove portion, each locking arm was bridged over each notched groove and locked, and a part of each locking arm was projected and locked into the female pipe. A fastener according to claim 5. 7. A sleeve that engages with the outer periphery of the notch groove of the female pipe 4 and a required portion of the outer periphery of the outer peripheral groove and that is slidably rotated and engaged with the stopper to be continuously rotated is covered by the stopper. A fastener in a pipe joint according to any one of claims 1 to 6.