JPH1026277A - Clamp for pipe body and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the clamp which can be applied to a connector main body inserting a bar like body such as a pipe body, a bar body and the like thereto so as to be mounted in such a way that it can be taken out, and can firmly hold the bar like body even when violent pulling force is applied the inserted bar like body. SOLUTION: This is a clamp which is engaged with the fitting part 15 at the outer circumference of a connector main body 10 for letting a bar like body be inserted, and allows the bar like body to be mounted to/demounted from the connector main body 10. An engaged part 20A is formed into a shape covering the fitting part 15, a locking pawl 22 is provided for the inner circumferential surface of the engaged part 20A wherein the aforesaid pawl is projected to the insertion part of the bar like body by way of the stopping hole 17 of the fitting part 15, its structure is so formed as to be capable of removing the bar like body by expanding the diameter, and furthermore the engaged part 20A comprises the fitting part 15 is covered and held in a shape by a shape retaining member 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in fasteners (generally referred to as clips, hereinafter also referred to as clips) for holding rods such as pipes and rods. Automotive fuel piping and fuel
The present invention relates to a fastener applied to a connector used for connection with an elbow.

[0002]

2. Description of the Related Art First, the inventor of the present invention has proposed a fuel supply system for automobiles.
L pipe (hereinafter simply referred to as pipe) and fuel hose
To improve the connector for connection of the cable, invented a connector which is easy to insert and remove the tube, and which can reduce the outer diameter of the connector body and which is convenient for assembling into an automobile. No. 107541). In this connector, the tube inserted into the insertion portion is disengaged by operating a clip fitted to the connector body, and the tube is used for clip operation in association with the fitting portion of the connector body. It has a feature in that it can be engaged and disengaged.

[0003] The connector of the prior invention connects the hose and the tube in a communicating manner. FIG. 17 shows the tube connecting side of the connector body 310 of the prior invention, and a clip 320 for attaching to this connecting side. The tube insertion portion 312 of the connector body 310 has an inner diameter into which the tube 30 can be inserted, and a clip fitting portion 315 on the outer periphery of the tube insertion portion 312 has a stopper hole 317 formed therethrough. The clip 320 is made of a synthetic resin and has opposite ends, and is formed in a ring shape whose diameter is expanded and urged to a reduced diameter that can be attached to the clip fitting portion 315, and the stopper hole is formed in the inner peripheral surface of the ring. Inserted into 317 and inserted into tube 30
There is provided a locking claw 322 for locking the lock. The tube 30 has a retaining projection 31 on the insertion side of the tube insertion portion 312.

That is, as shown in FIG. 18, when the tube 30 is inserted into the tube insertion portion 312, the front surface of the retaining projection 31 comes into contact with the tapered surface of the rear surface 322B of the locking claw 322, and When 30 is further inserted, the front surface of the retaining protrusion 31 pushes the locking claw 322 outward and raises the locking claw 322, and as shown in FIG.
The retaining projection 31 is inserted in front of the locking claw 322, and the tube 30 is inserted. The inserted tube 30 does not normally come off because the rear surface of the retaining projection 31 engages with the front surface 322A of the locking claw 322.

When the inserted tube 30 is to be removed from the connector 301, the clip 320 is expanded by operating the two tabs 321 of the clip 320 close to each other, and the locking claw 322 is retracted outward to remove the tube. The stopper projection 31 can be passed through, and the tube 30 can be easily removed. In the connector 301 of the prior invention, since the clip 320 is fitted on the outer periphery of the tube insertion portion 312 of the connector body 310, the outer diameter of the connector body 310 can be reduced.

[0006]

However, although the connector 301 of the prior invention does not hinder normal use,
When an excessive force is applied to the tube 30 inserted into the connector 301 in the pulling-out direction (the direction of the arrow P in FIG. 19), the clip 32
The clip 320 is opened because the tapered surface of the locking pawl 322 faces the direction of the stop hole 317, and the tube 30 may be detached from the connector 301. Therefore, the present invention is an improvement on the clip. Further, the present invention is not limited to the above-described connector clip, and is also applicable to a clip for detachably inserting a rod-shaped body such as a tube or a rod into the connector body. .

An object of the present invention is to apply the present invention to a connector body in which a rod-shaped body such as a tube or a rod is removably inserted, so that the rod-shaped body can be removed even if an excessive pulling force acts on the inserted rod-shaped body. An object of the present invention is to provide a fastener which does not come off.

[0008]

According to a first aspect of the present invention, there is provided a fastener according to the first aspect, wherein the fastener is fitted to a fitting portion on an outer periphery of a connector body for inserting a rod-shaped body. A fastener for attaching and detaching the rod-like body, wherein an attachment part is formed in a shape covering the fitting part, and a stopper hole of the fitting part is formed on an inner peripheral surface of the attachment part in the insertion part of the rod-like body. A locking claw that protrudes therethrough and locks the rod-shaped body is provided, and has a structure in which the rod-shaped body can be removed by a diameter-enlarging operation, and the attached portion is held by the shape holding member in a shape covering the fitting portion. It is characterized by becoming.

According to the first aspect of the present invention, the shape is held by the shape holding member that can cover the fitting portion, and the fastener does not open. For this reason, when an excessive pulling force acts on the inserted rod, the rod does not come off.

According to a second aspect of the present invention, there is provided a fastener according to the first aspect, wherein the shape retaining member has a linear shape or a band shape, and the peripheral portion of the fitting portion covering the fitting portion. It is characterized by being arranged on a surface via fixing means.

The shape of the fastener according to the second aspect is maintained by a linear or band-shaped shape holding member disposed on the peripheral surface of the adherend.

According to a third aspect of the present invention, there is provided the fastener according to the first aspect, wherein the shape retaining member has a linear shape or a band shape, and the thickness of the attached portion that covers the fitted portion. It is characterized in that it is embedded along the adhered portion in the thickness.

According to the fastener of the third aspect, the fastener including the linear or belt-shaped shape holding member can be easily obtained by insert molding of a synthetic resin. This fastener has a good appearance because the shape retaining member is not exposed.

As the shape holding member, a metal wire having high rigidity, a band-shaped metal plate having high rigidity, or a member having shape holding properties such as a spring wire or a band spring urged in a predetermined ring shape is adopted.

[0015]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. Clip 20 of the present embodiment
Is a fuel feed tube 30 and a hose for an automobile.
This is a case where the present invention is applied to the connector 1 used for connection of 40. It should be noted that the clip 1 for connecting the pipe 30 as in the case of this embodiment is usually also referred to as a pipe (pipe) holder. FIG. 1 shows a cylindrical connector body 10 for forming the connector 1 and a ring-shaped clip 20 for retaining the tube 30 in the connector body 10.

As shown in FIG. 5C, the tubular body 30 is provided with a flange-shaped retaining projection 31 on the outer surface on the insertion side. The retaining projection 31 has a tapered tapered front surface (front end side) 31A, and a rear surface 31B formed as an upright surface serving as a locking surface.

As shown in FIGS. 1 and 5, the connector body 10 has a hose connecting portion 11 for connecting a hose 40 at one end, and a retaining projection at the other end. It has a tube insertion part 12 into which a tube 30 provided with 31 is inserted. A predetermined portion on the inlet side of the tube insertion portion 12 has a large diameter into which the retaining projection 31 can be inserted, and the inside has a small diameter into which the tip of the tube 30 can be inserted. The inner part of the tube insertion part 12 communicates with the small-diameter through-hole part 13 of the hose connection part 11. An O-ring 14A for tight contact with the inserted tube 30 is inserted and fixed to the large-diameter back side of the tube insertion portion 12 by a stopper member 14B.

An outer peripheral portion on the inlet side of the tube insertion portion 12 is a clip.
As shown in FIG. 1 and FIG. 5, the clip fitting portion 15 is formed to be thin with respect to the central portion, and the outer peripheral portion on the inlet side is directed radially outward from the clip fitting portion 15. A protruding flange-shaped stop edge 16 is provided. Stop edge 16
Is approximately the same as the thickness of the clip 20. At a predetermined opposing position in the clip fitting portion 15, a stopper hole 17 of a locking claw 22 described later penetrates, and a peripheral surface close to the stopper hole 17 has a predetermined depth and gradually becomes shallow and leads to the peripheral surface The holding groove 18 (see FIGS. 1 and 6) is recessed. The vicinity of the stop hole 17 and the holding groove 18 is a small circumferential surface portion 15A as shown in FIGS. The connector body 10 of this embodiment is integrally formed of a synthetic resin having high strength, for example, 12 nylon blended with glass fiber.

As shown in FIGS. 1 and 2, the clip 20 has a convex shape in which one side of the opposite end is cut away from each other, and has a diameter slightly smaller than or equal to the outer circumference of the clip fitting portion 15 of the connector body 10. And formed of a synthetic resin having elasticity capable of expanding the diameter. That is, the clip 20 of the present example is formed in a ring shape whose protruding tip portions can be inserted into each other, and a knob portion 21 formed to be bent outward is provided at one of the tip portions. The thickness of the ring-shaped portion of the clip 20 is formed so that it does not become thicker than the large-diameter portion of the connector body 10 when fitted to the thin portion of the connector body 10. clip
The ring-shaped portion covering the clip fitting portion 15 of 20 is a fitting portion 20A.

At a predetermined position on the inner peripheral surface of the clip 20, a locking claw 22 that is inserted into each of the stopper holes 17 of the body 10 and protrudes from the tube insertion portion 12 protrudes. As shown in FIG. 5 (b), the locking claw 22 of the clip 20 has a front surface 22A having an upright shape capable of locking the rear surface 31B of the retaining projection 31, and the rear surface 22B of the locking claw 22 is a tube. The rear side of the body 30 that allows the insertion of the retaining projection 31 is formed as an open tapered surface. Further, as shown in FIG. 6B, the side surface of the locking claw 22 in the rotation direction (the direction of the arrow Q) of the clip 20 is an inclined surface 22C which rides over the stop hole 17, and the opposite side surface is the stop hole 17. The contact surface is an upright surface 22E. The protruding length of the locking claw 22 is set to a length that can lock the retaining protrusion 31 of the tube 30 in the tube insertion portion 12. In addition, the clip 20 of this example is formed of synthetic resin, for example, 12 nylon,
The knob 21 can be rotated around the clip fitting portion 15 by operating the knob portion 21.

As shown in FIG. 2A, the outer peripheral surface of the clip 20, that is, the center of the width of the attached portion 20A, is attached to the attached portion 20A.
A mounting groove 23 is formed along the groove, and as shown in FIG. 2 (b), a shape holding member 24 made of a ring-shaped rigid wire having a diameter slightly smaller than the inner diameter of the clip 20 is fitted into the mounting groove 23. You.
This rigid wire has a large shape-retaining property and is hardly spread or reduced in a ring shape. The mounting state of the shape holding member 24 in the mounting groove 23 is as shown in FIGS. 3 and 4, and the shape holding member 24 mounted in the mounting groove 23 does not come off.

As shown in FIG. 1, the clip 20 is attached to the connector body 10 with the front face 22A of the locking claw 22 facing the clip fitting portion 15 of the connector body 10, and The stop claws 22 are arranged to be easily inserted into the stop holes 17. After that, open both ends of the clip 20 with an appropriate jig to make the diameter of the clip 20 sufficiently large.
Can be inserted into the clip fitting portion 15. The large-diameter clip 20 is inserted into the clip fitting portion 15 until its front end surface contacts the stepped wall of the connector body 10, and the stop hole 17 and the locking claw 22
After that, the diameter expanding operation by the jig is released, the diameter is reduced by the elastic force of the clip 20 itself and the shape holding member 24, and the locking claw 22 is engaged with the locking hole 17 (FIG. 5).
(A) and FIG. 6 (a)).

Next, the retaining projection 31 side of the tube 30 is inserted into the tube insertion portion 12 of the connector 1. The front surface 31A of the retaining projection 31 of the inserted tube 30 contacts the rear surface 22B of the locking claw 22. (See FIG. 5) The front surface 31A of the stopper projection 31 which is pointed forward by the pushing of the tube 30 becomes the rear surface of the locking claw 22 whose rear is open.
In order to spread 22B, the clip 20 is pushed out through the locking claw 22, and when the retaining protrusion 31 of the tube 30 gets over the locking claw 22, the locking claw 22 returns into the tube insertion portion 12. , Clip 20
Returns to the state where it is fitted to the clip fitting portion 15. (FIG. 5
(Refer to the tube 30 shown by the imaginary line in (a).) The insertion portion of the tube 30 and the connector body 10 are sealed by the O-ring 14A.
A predetermined hose is connected to the hose connecting portion 11 of the connector body 10.
Is connected. The tube 30 can be easily connected to the connector body 10 by pushing it into the tube insertion portion 12.

On the other hand, when the tube 30 connected to the connector 1 is to be removed, when the knob 21 of the clip 20 is pushed in the circumferential direction, the locking claw 22 is moved to the inclined surface 22 as shown in FIG.
By C, the clip 20 goes over the peripheral surface portion 15A of the clip fitting portion 15, engages with the holding groove 18, and the clip 20 is held in an expanded state. That is, the locking claw 22 of the clip 20 is
Since the tube 30 is further removed, the attached tube 30 can be easily removed. Connector 1 with tube 30 removed
By pressing the knob 21 with respect to the clip 20 in the holding state, the tube 30 can be returned to a state in which the tube 30 can be inserted again.

That is, in the connector 1 in the state shown in FIG. 7, by continuously pushing the knob portion 21 in the direction of arrow Q, the locking claw 22 of the clip 20 in the holding mode is slid, and the clip fitting portion 15 is inserted from the holding groove 18. Through the outer peripheral surface of the clip fitting portion 15, as shown in FIG.
22 may be engaged with stop hole 17. When the locking claw 22 is engaged with the stop hole 17, the tube 30 can be inserted into the connector 1 by inserting the tube 30 into the tube insertion portion 12.

When the tube 30 inserted into the connector 1 is strongly pulled out, the shape of the clip 1 is held by the shape holding member 24.
Are not opened, and the insertion of the tube 30 is maintained. Also,
Even if the connector 1 to which the tube 30 is inserted is placed at a high temperature of, for example, 40 ° C., and the tube 30 is pulled out strongly, the shape retaining member 24 retains the shape of the clip 20.
Did not open, and the insertion of the tubular body 30 was maintained.

The above-mentioned clip 20 is rotated around the clip fitting portion 15 by pushing the knob portion 21, and
Is retracted from the stop hole 17, but the clip of the present invention is not limited to this. The clip is a tube
The present invention is not limited to the 30 insertions / wears, but may be used for attaching / detaching a rod.

For example, the clip 120 shown in FIGS.
Is made of synthetic resin, and the clip fitting portion 115 of the connector body 110 is
When the clip 120 is fitted, the locking claw 122 protrudes into the clip insertion portion 115 through the stopper hole 117, and the clip 120 is expanded in diameter by operating the two knobs 121 closer to each other, so that the locking claw 122 is inserted into the clip fitting portion 115. It has a structure to be retracted into the stop hole 117. Clip 120 covering clip fitting part 115 Covering part 120A
A linear shape holding member 24 is fitted in the mounting groove 23 on the outer periphery of the device.

Clip fitting portion of cylindrical connector body 110
After the clip 120 is attached to the pipe 115, the locking claw 122 is retracted by operating the knob 121, and the pipe 30 having the retaining projection 31 is provided.
Alternatively, a rod (not shown) can be inserted into the connector main body 110, and the locking claw 122 of the clip 120 can be projected through the stop hole 117 so that the tube 30 or the rod can be inserted in a retaining shape. . When a force in the pull-out direction acts on the inserted tube body 30 or the rod body, the shape holding member 24 disposed on the adherend 120A is applied.
However, since the diameter of the adherend 120A is prevented, the inserted tube 30 or rod does not come off.

The shape holding member in the above-described embodiment.
24 is a rigid metal ring-shaped wire rod for attaching parts 20A and 120A
Although they are fixed to the adherends 20A and 120A by fitting them to 23 and 123, the means for fixing the shape holding member 24 can be made appropriately as shown in FIGS.

FIG. 11 shows a linear shape holding member 24 having a bent front end portion, together with a bent piece 24A, and a mounting groove 23 of an attachment portion 20A.
It shows the case where it fixes to. Deposited part 20 by bent piece 24A
Easy to install and remove from A.

FIG. 12 shows that the linear shape holding member 24 is
A case in which it is locked and fixed to an L-shaped locking claw 25 protruding from A.

FIG. 13 shows a case in which the linear shape holding member 24 is locked and locked by a locking claw 26 having an upper opening.

FIG. 14 shows a belt-shaped shape holding member 24 attached to the adherend 20.
A case where it is fixed to A is shown. A retaining recess 24B is formed on the tip end side of the shape holding member 24 to form an uneven shape. The mounting groove 23 is formed in a groove shape in which the shape holding member 24 can be mounted, and the shape holding member 24 is mounted and fixed. 23A is a shape holding member
It is a locking part corresponding to the locking recess 24B of 24 and has a retaining function.

FIG. 15 is a view similar to FIG.
Is fixed to the adherend 20A. A fitting claw 24C provided on the shape retaining member 24 is fitted to a locking pin 27 having a retaining head that protrudes from the attached portion 20A, and
A shape holding member 24 is held on the outer peripheral surface of A.

The clips shown in FIGS.
Reference numeral 220 denotes a linear or band-shaped shape holding member 24 within the thickness of the adherend 220A. 28 is a lightening hole. The shape holding member 24 can be obtained by arranging the shape holding member 24 in a molding die for obtaining the clip 220 and performing insert molding of a synthetic resin. The clip 220 also has good shape retention, and can prevent the tube 30 or the rod inserted into the clip 220 from being pulled out.

[0037]

According to the fastener according to the first to third aspects of the present invention, since the attachment portion is held by the shape holding member in a shape covering the fitting portion, the fastener is inserted into the connector body. Even if an unreasonable pulling force is applied to the attached rod-shaped body, the adhered portion is not easily opened because the shape is maintained and the adhered portion is not opened. The operation of inserting the tube and removing the inserted tube can be performed by predetermined means.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fastener according to an embodiment of the present invention together with a connector main body.

FIGS. 2A and 2B are component diagrams of the fastener of the embodiment, wherein FIG. 2A is a perspective view of a fastener main body, and FIG. 2B is a perspective view of a shape holding member.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view of the fastener taken along a mounted shape retaining member.

FIG. 5A is a sectional view of a connector to which a fastener is applied,
(B) is a cross-sectional view of the fastener, and (C) is a shape view of the distal end side of the tubular body.

6A is an enlarged sectional view taken along the line VI-VI of FIG. 5, and FIG. 6B is an enlarged sectional view of the locking claw.

FIG. 7 is an operation explanatory view of the fastener of FIG. 6;

FIG. 8 is an operation explanatory view of the fastener of FIG. 6;

FIG. 9 is a diagram illustrating a main part of a fastener and a connector body according to another embodiment.

FIG. 10 is a side view of the fastener of FIG. 9;

FIG. 11 is a view showing another embodiment of the attachment means of the linear shape holding member.

FIG. 12 is another view of the attachment means of the linear shape holding member.

FIG. 13 is another view of the mounting means of the linear shape holding member.

FIG. 14 is another view showing the attaching means of the band-shaped shape holding member.

FIG. 15 is another view of the attaching means of the band-shaped shape holding member.

FIG. 16 (a) is another view of the fastener. (B) It is sectional drawing of a fastener (a).

FIG. 17 is a perspective view showing a conventional fastener and a mounting side of a conventional connector.

FIG. 18 is a sectional view of a main part of a conventional connector when a pipe is inserted thereinto.

FIG. 19 is an operation explanatory diagram when a force in a pulling direction acts on the inserted pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 10 Connector main body 12 Tube insertion part 15 Clip fitting part 17 Stop hole 20 Clip 20A Covering part 21 Knob part 22 Locking claw 23 Mounting groove 24 Shape holding member 30 Tube

Claims (3)

[Claims] 1. A fastener for fitting a rod-shaped body into a fitting portion on an outer periphery of a connector body for attaching and detaching the rod-shaped body to and from the connector body, wherein the fitting covers the fitting portion. A fitting portion is formed, and a locking claw that protrudes through an insertion hole of the rod-like body through a fitting hole of the fitting portion and locks the rod-like body is provided on an inner peripheral surface of the adhered portion, and a diameter increasing operation is performed. A fastener characterized in that it has a structure from which a rod-shaped body can be removed, and wherein an attachment portion is held by a shape holding member in a shape covering the fitting portion. 2. The fastening according to claim 1, wherein the shape maintaining member has a linear shape or a band shape, and is disposed on a peripheral surface of the attached portion covering the fitted portion via fixing means. Utensils. 3. A shape maintaining member having a linear shape or a band shape, wherein the shape maintaining member is embedded along a thickness of the attached portion covering the fitted portion along the attached portion. The fastener according to claim 1.