CN105074308A

CN105074308A - Tube-fastening structure

Info

Publication number: CN105074308A
Application number: CN201480013869.8A
Authority: CN
Inventors: 泷本伸二
Original assignee: Toyox Co Ltd
Current assignee: Toyox Co Ltd
Priority date: 2013-03-13
Filing date: 2014-03-13
Publication date: 2015-11-18
Anticipated expiration: 2034-03-13
Also published as: SG11201506993TA; TWI573948B; JPWO2014142226A1; JP5641552B1; TW201447158A; CN105074308B; HK1213036A1; WO2014142226A1; MY172693A

Abstract

The present invention prevents marring of the outer surface of a tube while reliably preventing pull-out with a simple structure regardless of diameter-constricting deformation of the tube. Even if the clip body (2) is moved along the outer surface (A1) of a tube (A) into which a nipple (1) is inserted, the tip surface (41d) of a bent section (41) does not strike the outer surface (A1) of the tube (A). The clip body (2), with the diameter expanded using manipulator parts (3) thereof, is moved toward a locking flange (12) of the nipple (1). When the bent section (41) of the hook (4) rides over the locking flange (12) in the axial direction, the diameter of the clip body (2) undergoes diameter-constricting deformation elastically by releasing the diameter expansion of the clip body using the operating parts (3) and as a result, the tip surface (41d) of the bent section (41) enters an engaging groove (13) of the nipple (1). At the same time, the bent section (41) engages with the locking flange (12) in the axial direction and becomes immovable. Even if subsequently the clip body (2) digs into the outer surface (A1) of the tube (A) or the tube (A) undergoes diameter-constricting deformation in association with aged deterioration, the bent section (41) moves radially inward along the locking flange (12) and the engagement of the two is maintained.

Description

Pipe fastening structure

Technical field

The present invention relates to a kind of by clip by flexible pipe or pipe etc. can the body of resiliently deformable relative to the pipe fastening structure of joint anticreep.

Background technique

In the past, have following structure as this kind of pipe fastening structure, the clip that the flexible pipe be embedded on an end of pipeline is clamping from periphery undergauge by it was integrally formed with: circular clamping section, can clamp flexible pipe from periphery; And the hook of L-shaped, to extend vertically and circumferentially from the axial end portion of circular clamping section, the loudspeaker nut being arranged at pipeline is provided with the breach of L-shaped, circumferentially rotate after the hook of L-shaped being inserted into vertically the breach of L-shaped, snap into thus and make cannot move vertically each other (such as referenced patent document 1).

Further, also have following structure, it possesses: clamping section, is formed by bar-shape sheet material so that C word shape is bending; Engagement portion (card complex hole, raised line rib, recessed bar groove), adjoins with clamping section and is formed; Engaged part (engaging protrusion, recessed bar groove, raised line rib), arranged by the outer circumferential face of the pipeline of intercalation adjoins with the front end of flexible pipe at flexible pipe, the engagement portion of clamping section is made to be sticked in the engaged part of pipeline from radial outside, thus engagement portion and the radial direction concavo-convex chimeric (such as referenced patent document 2) of engaged part along flexible pipe.

Conventional art document

Patent documentation

Patent documentation 1: Japanese Patent Publication 2010-169175 publication

Patent documentation 2: Japanese Patent Publication 2006-57798 publication

Summary of the invention

The technical task that invention will solve

From the beginning, by synthetic resin or the shaping body with flexual flexible pipe or pipe etc. of rubber elastomeric material, there is following character: internal diameter and external diameter or wall thickness easily produce the character of size error during fabrication; If clamped from periphery by clip etc., then clamp the elastic material compressive strain at position and cause the incision of clip etc.The elastic material that the amount of compressive strain is suitable by this incision is kept out of the way and the character of bulging deformation to the position adjacent with clamping position; Along with Long-Time Service, the thinning and character of necking deformation of wall thickness; And because of the slight scuffing of outer surface crackly character.

But, in this pipe fastening structure in the past, when patent documentation 1, due to the hook of L-shaped and the breach of L-shaped snap into can be circumferentially in rotary moving, if therefore in use flexible pipe rotates and distortion, then the hook of L-shaped and flexible pipe together in the circumferential occurrence positions depart from, thus easily to offset with the engaging of the breach of L-shaped.

Especially, operating personnel is circumferentially fully not in rotary moving by the hook of L-shaped and when not engaging completely with the breach of L-shaped, the hook of L-shaped is more prone to offset from the breach of L-shaped.In this condition, if flexible pipe is stretched, then flexible pipe together comes off from pipeline and clip, there is the problem that the intensity that comes off declines.

And, when patent documentation 2, for following structure, even if that is, be cut into the outer circumferential face of flexible pipe along with the clamping based on clamping section, or along with changing the necking deformation and clamping section that cause year in year out for further necking deformation by flexible pipe, engagement portion is also supported by engaged part and is difficult to move to radially inner side, and therefore clamping section cannot necking deformation swimmingly, thus, between the outer circumferential face and the inner peripheral surface of clamping section of flexible pipe, form gap, thus clamping force declines.

Especially, when external diameter is less than standard-sized flexible pipe because of foozle in use, easily between the outer circumferential face and the inner peripheral surface of clamping section of flexible pipe, gap is produced further.In this condition, if flexible pipe is stretched, then flexible pipe comes off between clamping section and pipeline, there is the problem that the intensity that comes off declines.

In addition, when patent documentation 2, if the elastic material that the amount being cut into the outer circumferential face of flexible pipe along with the clamping based on clamping section is suitable is kept out of the way and bulging deformation to the position adjacent with clamping position, then clamping section is integral inclined, thus also there is engagement portion easily from the problem of engaged part skew.

The present invention addresses this is that as problem, and its object is the scuffing of the outer surface prevented body, and simultaneously no matter body whether necking deformation, all realizes reliable anticreep etc. with simple structure.

For the means of technical solution problem

In order to realize this object, the present invention possesses: inipple, and being inserted into can the body of resiliently deformable; Gripper body, between described inipple, clip described body also can along the elastomeric radial of clamping; The operation unit of resiliently deformable, is arranged at described gripper body; And hook, be highlighted and be arranged at described gripper body, described inipple has: inserting part, is inserted into described body; Locking flange, is arranged at the end of described inserting part; And engagement groove, clip the opposition side that described locking flange is arranged at described inserting part, described hook has flexing portion, described locking flange is crossed vertically along with the radial deformation of described gripper body by described flexing portion, the front-end face in described flexing portion is configured on the axially-extending line of the inner peripheral surface of described gripper body, and is configured to radially to clip space portion between described locking flange and described engagement groove opposed.

Invention effect

There is the present invention of preceding feature, even if move gripper body along the outer surface of the body being inserted with inipple, the front-end face in flexing portion also can not with the exterior surface of body.Gripper body is made to keep the state of expanding distortion to move towards the locking flange of inipple by operation unit, thus after the flexing portion of hook crosses locking flange vertically, the expanding of gripper body is removed by operation unit, gripper body elasticity necking deformation thus, the front-end face in flexing portion utilizes this elasticity necking deformation and enters into the engagement groove of inipple, and flexing portion engages vertically with locking flange and becomes and cannot move simultaneously.Then, though body along with gripper body relative to the incision of the outer surface of body or year in year out change and necking deformation, flexing portion also moves along locking flange to radially inner side, thus maintain both fastening state.

Therefore, it is possible to prevent the scuffing of the outer surface to body, simultaneously no matter body whether necking deformation, can both realize reliable anticreep with simple structure.

Its result, the hook of L-shaped and the breach of L-shaped are circumferentially with can the structure in the past that engages of mode in rotary moving, even if or clamping section for the necking deformation along with flexible pipe necking deformation, also supported by engaged part due to engagement portion and be difficult to move to radially inner side, if and the position bulging deformation adjacent with clamping position on the outer circumferential face of flexible pipe along with the clamping based on clamping section, then clamping section tilt and engagement portion easily from engaged part skew structure in the past, compared with above-mentioned two kinds of structures, can through the intensity that comes off of long term maintenance excellence, and can prevent by the accident caused that comes off of body.

Accompanying drawing explanation

Fig. 1 is the integrally-built explanatory drawing of the pipe fastening structure represented involved by embodiments of the present invention, Fig. 1 (a) is plan view, Fig. 1 (b) is along the longitudinal section side view of Fig. 1 (a) (1B)-(1B) line, and Fig. 1 (c) is along the longitudinal section plan view of Fig. 1 (b) (1C)-(1C) line.

Fig. 2 is the stereogram of decomposing state, Fig. 2 (a) is overall stereogram, Fig. 2 (b) is the stereogram from observing clip in the other direction, Fig. 2 (c) is the stereogram of the expanding state representing clip, and Fig. 2 (d) is from the stereogram observed in the other direction under the expanding state of clip.

Fig. 3 represents that body is relative to the stereogram of the connection operation of inipple and side view, Fig. 3 (a) be inipple is inserted into body before stereogram, Fig. 3 (b) is the side view of this state, Fig. 3 (c) be inipple is inserted into body after stereogram, Fig. 3 (d) is the side view of this state, Fig. 3 (e) rotates the stereogram after clip, and Fig. 3 (f) is the side view of this state.

Fig. 4 is the stereogram amplifying the variation representing clip.

Fig. 5 is the amplification stereogram amplifying another variation representing clip.

Fig. 6 is the longitudinal section plan view of the variation representing inipple.

Fig. 7 is the longitudinal section plan view of another variation representing inipple.

Embodiment

Below, with reference to the accompanying drawings embodiments of the present invention are described in detail.

As shown in Fig. 1 ~ Fig. 5, the pipe fastening structure involved by embodiments of the present invention is, after the inipple 1 of joint B is inserted into the connecting end portion of body A, is realized the anticreep of the connecting end portion of body A by clip C relative to inipple 1.

That is, after joint B is inserted into body A, become body A cannot be moved along its direction F that comes off relative to inipple 1 by clip C fastening (link).

Describe in detail, the pipe fastening structure involved by embodiments of the present invention possesses constitutive requirements main as follows: the inipple 1 of joint B, and being inserted into can the body A of resiliently deformable; The gripper body 2 of clip C, between inipple 1, clip body A also can along the elastomeric radial of clamping; The operation unit 3 of resiliently deformable, is arranged at gripper body 2; And hook 4, be highlighted and be arranged at gripper body 2.

Body A has flexual soft material shaping such as flexible pipe or pipe etc. by the soft synthetic resins such as such as vinyl chloride, silicone rubber, other rubber etc., preferably its outer surface A1 and inside surface A 2 smooth.

As the concrete example of body A, as shown in FIG. 1 to 3, the flexible pipe of single layer structure is used.

And, as other examples although not shown, but the stacked flexible pipe (flexible hose) spirally buried underground by many or synthetic resin braided wires (reinforced wire) also can be used between its transparent or opaque skin and internal layer as mesosphere; Or, the banded stiffener that to use synthetic resin system or metal cross section be rectangle etc. and the wire stiffener that cross section is circle etc. spirally reel and all-in-one-piece spiral reinforced hose (Vohran flexible pipe) or spiral reinforced hose that metal wire rod or hard resin wire rod are spirally buried underground etc. as mesosphere.

Joint B end side axially has inipple 1.

Inipple 1 is formed to have the roughly cylindric of the external diameter roughly the same with the internal diameter of body A by not flexible rigid materials such as metal or hard resin such as such as brass, or is formed the thinner cylindrical shape of wall thickness by carrying out punch process or other shaping operation to the sheet material be made up of deformable rigid materials such as such as stainless steels.

In addition, the locking flange 12 of the inserting part 11 outer circumferential face of inipple 1 with the connecting end portion being inserted into body A, the end being formed on inserting part 11 and clip the engagement groove 13 that locking flange 12 is arranged at the axially opposite side (with the direction F reciprocal intercalation direction G that comes off) of inserting part 11.

Locking flange 12 is preferably, and radially gives prominence to and is formed ring-type, have the notch part 12a that the flexing portion 41 (the second blade of a sword side 12d) of hook 4 described later can be made to extend axially through at the outer circumferential face of inipple 1.As shown in FIG. 1 to 3, notch part 12a is preferably formed as concavity in the mode making its bottom surface be configured to the depth as shallow of the inner bottom surface than engagement groove 13.Further, as other examples although not shown, but also the bottom surface of notch part 12a can be formed as concavity in the mode more shallow than illustrated example, or notch part 12a be formed as concavity.

In addition, preferably the notch part 12a of at least more than one (one or more) is partially formed as concavity along the circumference of locking flange 12.

Engagement groove 13 is circumferentially formed adjacent with locking flange 12, and is configured to darker and more shallow than the outer circumferential face of inipple 1 than the overhang of locking flange 12.

Clip C has the gripper body 2 of periphery, the hook 4 for making the operation unit 3 of gripper body 2 resiliently deformable and at least more than one (one or more) be arranged at axial one end of gripper body 2 that are configured to the connecting end portion covering body A.

Gripper body 2 by by the banded material be made up of metal or other elastic materials of the elasticity repulsive force excellences such as spring steel with circular bending and formed, having can the inner peripheral surface 2a of radially resiliently deformable.

What become gripper body 2, the circumferential both ends or one end of circular bending banded material are provided with operation unit 3, and be configured to by making operation unit 3 overcome the spring force of gripper body 2 and circumferentially move, making circular banded material radially resiliently deformable and make the internal diameter of gripper body 2 expanding.

In the example shown in Fig. 1 ~ Fig. 3, gripper body 2 and hook 4 are integrally formed, thus hook 4 also can resiliently deformable.

Further, as other examples although not shown, but also gripper body 2 and hook 4 can be formed separately and to be fixed by deposition or its and integrated.Now preferably hook 4 also by can the material of resiliently deformable be formed.

When not carrying out the undergauge of move operation to operation unit 3, as shown in Fig. 2 (a), (b) and Fig. 3 (a), (b), the internal diameter of gripper body 2 is configured to be substantially equal to or to be slightly less than the external diameter of the body A under the original state not being inserted with inipple 1.As shown in Fig. 1 (a) ~ (c) and Fig. 3 (e), (f), under the coupled condition of periphery being configured to cover the body A being inserted with inipple 1, be configured to the external diameter being less than body A, thus the connecting end portion radially clipping body A between inserting part 11 carries out elastic clamping.

And, when making operation unit 3 circumferentially movement expanding, as shown in Fig. 2 (c), (d) and Fig. 3 (c), (d), the internal diameter of gripper body 2 is configured to not only to be greater than the external diameter of the body A under the original state not being inserted with inipple 1, is even also greater than the external diameter of the body A being inserted with inipple 1.Thus, gripper body 2 inner peripheral surface 2a and be inserted with inipple 1 body A outer surface A1 between produce gap, thus relative to being inserted with the outer surface A1 of body A of inipple 1, can make the gripper body 2 of clip C vertically and circumference move freely.

As the concrete example of clip C, as shown in Fig. 1 ~ Fig. 5, have: becoming a pair operation unit 3 formed by warpage respectively with the circumferential two ends of circular bending banded material of gripper body 2, the penetration hole 2b be formed throughout an operation unit 3 from circumference one end of banded material and to be formed in circumferential the other end of banded material with another operation unit 3 continuously and in penetration hole 2b can the movable part 2c of circumferentially movement.

When not being the undergauge caused by the operation of operation unit 3, as shown in Fig. 2 (a), (b) and Fig. 3 (a), (b), be configured to penetration hole 2b and movable part 2c overlaps each other in the axial direction, operation unit 3 is separated from each other.As shown in Fig. 2 (c), (d) and Fig. 3 (c), (d), by instrument or finger etc., two operation units 3 clamped and make its movement close to each other, movable part 2c moves swimmingly in penetration hole 2b thus, thus reduces and expanding distortion with the lap of penetration hole 2b.Further, be configured to by the clamping from this expanding state releasing operation portion 3, and by the spring force necking deformation of gripper body 2.

Further, as other examples although not shown, but also only can form operation unit 3 in the long side direction one end of the banded material becoming gripper body 2, or change the shape of penetration hole 2b and movable part 2c or operation unit 3.

One or more hook 4 so that the axial one end in gripper body 2, a circumferential part to be integrally formed to axial and radial outstanding mode, or is integrally fixed.Hook 4 extends along the locking flange 12 of inipple 1 to radial direction, and has the flexing portion 41 can crossing locking flange 12 along with the radial deformation of gripper body 2 vertically.

Flexing portion 41 has the first jut 41a that the first blade of a sword side 12b along locking flange 12 extends to radial outside, from the front end of the first jut 41a along the blade of a sword outer surface 12c of locking flange 12 to axially extended cylindrical portion 41b and from the front end of cylindrical portion 41b along the second jut 41c that the second blade of a sword side 12d of locking flange 12 extends towards the engagement groove 13 of inipple 1 to radially inner side.

The second jut 41c in flexing portion 41 is configured to, be inserted with the movement vertically of the outer surface A1 of the body A of inipple 1 along with the expanding distortion with respect to gripper body 2 and cross locking flange 12 vertically, and entering into engagement groove 13 along with the necking deformation of gripper body 2 thereafter.

In addition, the second jut 41c in flexing portion 41 has the front-end face 41d opposed diametrically with the inner bottom surface of the engagement groove 13 of inipple 1.Under the front-end face 41d of the second jut 41c is configured to the state of engagement groove 13 that the second jut 41c enters into inipple 1 at the necking deformation along with gripper body 2, with radially to clip space portion S between locking flange 12 and engagement groove 13 respectively opposed.

In the example shown in Fig. 2 (a) ~ (d), the front-end face 41d of the second jut 41c is configured to the inner peripheral surface 2a of gripper body 2 in the axial direction in roughly the same shape.

Further, as other examples although not shown, but also the front-end face 41d of the second jut 41c can be configured to than the inner peripheral surface 2a of gripper body 2 axially-extending line more by radial outside concavely.

Space portion S is formed by being divided the first space S 1 of being formed between the cylindrical portion 41b in flexing portion 41 and the blade of a sword outer surface 12c of locking flange 12 and being divided the second space S2 formed between the second jut 41c and the inner bottom surface of engagement groove 13 in flexing portion 41.When being clamped in the body A necking deformation between the inserting part 11 of inipple 1 by gripper body 2, with its in linkage, the cylindrical portion 41b in flexing portion 41 is close towards the blade of a sword outer surface 12c of locking flange 12, simultaneously, the second jut 41c in flexing portion 41 is close towards the inner bottom surface of engagement groove 13, thus the second jut 41c in flexing portion 41 can be made to move along the second blade of a sword side 12d of locking flange 12 to radially inner side.

And be preferably, in flexing portion 41, between the first jut 41a and the second jut 41c, be formed in the rotation space 41e that axially width is wider than the locking flange 12 of inipple 1, and make the second jut 41c along the second blade of a sword side 12d of locking flange 12 and engagement groove 13 in rotary moving.

And, in the pipe fastening structure involved by embodiments of the present invention, by process sequence, body A is described relative to the connecting means of joint B.

First, under the original state shown in Fig. 3 (a), by body A inserted through after the gripper body 2 to clip C, the inipple 1 of joint B is inserted into the connecting end portion of body A.In the example shown in Fig. 3 (a), be pressed into the connecting end portion of body A along intercalation direction G relative to the inipple 1 of joint B.

In the initial condition, as shown in Fig. 3 (b), the operation unit 3 of clip C is not moved operation, and therefore gripper body 2 is by undergauge.Now, when being set to roughly the same with the external diameter of body A by the internal diameter of gripper body 2, the inner peripheral surface 2a of gripper body 2 slides along the outer surface A1 of body A, therefore, it is possible to insert clip C swimmingly.

And, when the internal diameter of gripper body 2 is configured to the external diameter being slightly less than body A, the operation unit 3 of clip C is made the expanding distortion of gripper body 2 near moving, gap is produced thus, therefore, it is possible to insert clip C swimmingly between the inner peripheral surface 2a of gripper body 2 and the front-end face 41d in flexing the portion 41 and outer surface A1 of body A.

Then, as shown in Fig. 3 (c), (d), make gripper body 2 keep the state of expanding distortion that gripper body 2 and hook 4 are moved along intercalation direction G in the mode that the locking flange 12 with inipple 1 is close by the operation unit 3 of clip C, make the flexing portion 41 (the second jut 41c) of hook 4 cross locking flange 12 vertically thus.

Be configured to as follows in illustrated example: the front-end face 41d be configured to the second jut 41c of the inner peripheral surface 2a of gripper body 2 in the axial direction in roughly the same shape is moved along intercalation direction G, can not contact with the bottom surface of notch part 12a and move smoothly through vertically thus, thus cross locking flange 12 like a cork.

And, as other examples although not shown, but also can change to as follows: make the entirety of hook 4 or at least flexing portion 41 (the second jut 41c) local elastic deformation and moving along intercalation direction G, the front-end face 41d of the second jut 41c strides across the bottom surface of the notch part 12a being formed as concavity in the mode more shallow than illustrated example thus, thus makes the flexing portion 41 (the second jut 41c) of hook 4 cross locking flange 12 vertically.

In addition, if the amount of deformation of gripper body or hook 4 is comparatively large, then without the need to notch part 12a is formed as concavity.

Along with this moves, the flexing portion 41 of hook 4 is along after intercalation direction G crosses locking flange 12, as shown in Fig. 3 (e), (f), if operation unit 3 is on the contrary mobile and remove the expanding distortion of gripper body 2, then gripper body 2 elasticity necking deformation and sandwich between the inipple 1 of joint B and clamp the connecting end portion of body A.

Meanwhile, the front-end face 41d in flexing portion 41 enters into the engagement groove 13 of inipple 1.

Thus, the second jut 41c in flexing portion 41 engages along the direction F that comes off with the second blade of a sword side 12d of locking flange 12 and becomes and cannot move.Therefore, the connecting end portion of body A is by inipple 1 anticreep of clip C relative to joint B, thus body A is reliably connected to joint B.

Pipe fastening structure involved by this embodiments of the present invention, arrange in the preparatory process of clip C in the connecting end portion of body A relative to the inipple 1 being inserted with joint B, even if moved to intercalation direction G by the outer surface A1 of gripper body 2 along body A, the front-end face 41d in flexing portion 41 also can not collide with the outer surface A1 of body A.Therefore, it is possible to prevent the scuffing of the outer surface A1 to body A.

Then, make gripper body 2 keep the state of expanding distortion to move towards the locking flange 12 of inipple 1 by operation unit 3, thus the flexing portion 41 of hook 4 is along after intercalation direction G cross locking flange 12, removes the expanding of gripper body 2 by operation unit 3.Thus, gripper body 2 elasticity necking deformation, the front-end face 41d in flexing portion 41 utilizes this elasticity necking deformation and enters into the engagement groove 13 of inipple 1.Meanwhile, flexing portion 41 (the second jut 41c) engages vertically with locking flange 12 (the second blade of a sword side 12d) and becomes and cannot move.

After by clip C the connecting end portion of body A being connected and fixed on joint B, even if the connecting end portion of body A along with gripper body 2 relative to the incision of the outer surface A1 of body A or year in year out change and necking deformation, the second jut 41c in flexing portion 41 also moves along the second blade of a sword side 12d of locking flange 12 to radially inner side, thus the fastening state both maintaining.

Thus, whether necking deformation in the connecting end portion of no matter body A, can both realize reliable anticreep.

Therefore, it is possible to through the intensity that comes off of long term maintenance excellence, and can prevent by the accident caused that comes off of body A.

Especially, as shown in the example of the figure, the locking flange 12 of inipple 1 has the notch part 12a that the flexing portion 41 of hook 4 can be made to extend axially through, when flexing portion 41 has the width rotation space 41e wider than locking flange 12, as shown in Fig. 3 (c), notch part 12a along locking flange 12 makes the flexing portion 41 (the second jut 41c) of hook 4 extend axially through, and locking flange 12 is crossed in flexing portion 41 (the second jut 41c) vertically thus.

In addition, when notch part 12a is formed as concavity in the mode of the depth as shallow than engagement groove 13, even if do not carry out making inadequate close movement of the operation unit 3 of clip C and by operation excessively expanding for gripper body 2, locking flange 12 also can be crossed by the flexing portion 41 (the second jut 41c) of hook 4.If in the clamping in this moment releasing operation portion 3, then along with the rotation process of gripper body 2, even if that hook 4 is not in rotary moving along locking flange 12 (the second blade of a sword side 12d), the front-end face 41d in flexing portion 41 also can enter into the engagement groove 13 of inipple 1, thus flexing portion 41 (the second jut 41c) engages vertically with locking flange 12 (the second blade of a sword side 12d) and becomes and cannot move.

Therefore, even if the expanding amount of deformation of the gripper body 2 caused by operation unit 3 is less, it also can be made relative to the reliably anticreep engaging of locking flange 12.

Then, as shown in Fig. 3 (e), preferably further rotation process carried out to gripper body 2 and makes hook 4 in rotary moving along locking flange 12 (the second blade of a sword side 12d), thus flexing portion 41 (the second jut 41c) being moved to the position of intact oral area 12a in locking flange 12 (the second blade of a sword side 12d).

In this case, flexing portion 41 (the second jut 41c) more reliably engages in the axial direction with locking flange 12 (the second blade of a sword side 12d), thus can improve integrity.

And, when being configured to more be formed by radial outside mode concavely than the axially-extending line of the inner peripheral surface 2a of gripper body 2 with the front-end face 41d of the second jut 41c by hook 4, the front-end face 41d of the second jut 41c separates further with the outer surface A1 of body A.

Thereby, it is possible to reliably prevent the scuffing of the outer surface A1 to body A caused by the front-end face 41d of the second jut 41c.

In addition, when the flexing portion 41 (the second jut 41c) being configured to hook 4 is by the entirety of hook 4 or local elastic deformation and when crossing locking flange 12, as shown in Fig. 3 (e), without the need to carrying out rotation process further to gripper body 2.

[embodiment 1]

Then, with reference to the accompanying drawings various embodiments of the present invention are described.

As shown in FIG. 1 to 3, in this embodiment 1, in the inserting part 11 of inipple 1, the opposed position of body A is radially being clipped with the end 2d of gripper body 2, circumferentially be provided with annular recessed portion 11a, described gripper body 2 is located relative to locking flange 12 vertically by hook 4, and described annular recessed portion 11a is radially chimeric with the body A clamped by gripper body 2.

In the example shown in Fig. 1 ~ Fig. 3, inserting part 11 is formed with multiple annular recessed portion 11a, and be configured in annular recessed portion 11a any one is radially opposed with the end 2d being configured in the opposition side of hook 4 in gripper body 2 on the direction F that comes off of body A.

Describe in detail, as annular recessed portion 11a, multiple (a pair) groove 11b separates predetermined distance vertically respectively and is formed, and be configured to the first paragraph portion 11c configured relative to the direction F that comes off of tube body A most in these grooves 11b, the ora terminalis as the end 2d of gripper body 2 is radially opposed.

In addition, the first paragraph portion 11c that in groove 11b, the direction F that comes off of most tube body A configures radially almost holds up with right angle from the inner bottom surface of groove 11b.In these grooves 11b, along the opposite direction of the direction F that comes off, namely body A is tilt towards the mode that intercalation direction G is expanding gradually with the inner bottom surface from groove 11b relative to the second segment portion 11d that the intercalation direction G of inipple 1 is configured respectively.

Thus, body A is clamped towards inserting part 11 by the gripper body 2 comprising movable part 2c, and along annular recessed portion 11a resiliently deformable, therefore the inside surface A 2 of body A is chimeric with annular recessed portion 11a, thus the end 2d of the opposition side of the hook 4 of gripper body 2 engages vertically with the first paragraph portion 11c of groove 11b.

Further, as other examples although not shown, but also can form more than one or three annular recessed portion 11a on inserting part 11, and it is radially opposed with the end 2d of gripper body 2 that these section of portion is configured to.

According to the pipe fastening structure involved by this embodiments of the invention 1, make the gripper body 2 elasticity necking deformation of being located vertically relative to the locking flange 12 of inipple 1 by hook 4, to clip body A radially chimeric with the annular recessed portion 11a (first paragraph portion 11c) of inserting part 11 for the end 2d of gripper body 2 thus, and therefore the inside surface A 2 of body A increases further relative to the surface friction drag vertically of the inserting part 11 of inipple 1.

Therefore, it is possible to make body A more be difficult to come off from inipple 1.

Its result, has the advantage that can realize body A and improve further relative to the intensity that comes off of inipple 1.

Especially, in the example shown in Fig. 1 ~ Fig. 3, on the banded material becoming gripper body 2, run through individually with penetration hole 2b and offer card complex hole 2e.

Card complex hole 2e is configured to, and it is opposed that a part and the first paragraph portion 11c that the inner bottom surface from groove 11b is radially almost holded up with right angle of its peritreme clip body A.

The shape of card complex hole 2e is not limited to illustrated example, also can change.

Thus, as shown in Fig. 1 (a) ~ (c) and Fig. 3 (e), (f), by the clamping of gripper body 2, the peritreme of card complex hole 2e is cut into the outer surface A1 of the body A being inserted with inipple 1, thus the surface friction drag of outer surface A1 and gripper body 2 is increased, simultaneously, it is radially chimeric with the first paragraph portion 11c of annular recessed portion 11a that the part of the peritreme of card complex hole 2e clips body A, and therefore the inside surface A 2 of body A increases further relative to the surface friction drag vertically of the inserting part 11 of inipple 1.

Further, as other examples, as shown in Figure 4, card complex hole 2e can be there is no yet.

In addition, in the example shown in Fig. 1 ~ Fig. 3, axially another side, the tool engagement portion 14 that the such as instrument such as spanner or spanner (not shown) that is formed with respectively engages and the joint 15 for being connected to other tube connection ports (not shown) be made up of another machine or another body etc. is more leaned on than engagement groove 13 in inipple 1.

As tool engagement portion 14, be formed with hexagon nut.

When being established internal thread quarter at the inner peripheral surface of tube connection ports of the other machines or other bodys etc. that are connected to joint B, joint 15 is carved and establishes the outside thread corresponding with it, and when being established outside thread quarter at the outer circumferential face of this tube connection ports, carving and establishing the internal thread corresponding with it.In illustrated example, carve and be provided with outside thread as joint 15.

Further, as other examples although not shown, but also inipple 1 and joint B can be formed separately, and inipple 1 and joint B are detachably installed.

In addition, also the inipple 1 of joint B can be connected with other machines or other bodys and make these electric connections by joint 15.

Especially, when the gripper body 2 of joint B and clip C and hook 4 are formed by conductive materials such as metals, under the coupled condition of body A and joint B, the hook 4 of the gripper body 2 contacted with the outer surface A1 of body A is contacted with the locking flange 12 of inipple 1, therefore the state that becomes with inipple 1 or other machines or other body electric connections via gripper body 2 of the outer surface A1 of body A.

Moreover, when arranging at the outer surface A1 of body A the conductive part or outermost surface that are made up of conductive material in order to remove the electrostatic that occurs in the transfer of the fluid passed through in body A, can by the electrostatic that occurs in the transfer of fluid from the outer surface A1 of body A through gripper body 2 on inipple 1 side joint ground.Thereby, it is possible to provide a kind of pipe fastening structure of excellent in safety.

And, when by as joint 15 be threadedly connected to other tube connection ports time, according to the screw-in situation of joint 15, the notch part 12a of locking flange 12 is likely configured in the angle that operating personnel is difficult to observe.

Therefore, in the example in the figures, locking flange 12 circumferentially forms multiple (a pair) notch part 12a respectively every predetermined distance.

, as other examples although not shown, but on locking flange 12, also circumferentially can form the notch part 12a of more than three respectively every predetermined distance further.

[embodiment 2]

As shown in Figure 5, this embodiment 2 is following structure, circumferentially multiple hook 4 is set respectively every predetermined distance in axial one end of gripper body 2, locking flange 12 circumferentially forms notch part 12a that is identical with the quantity of hook 4 or its above quantity respectively every predetermined distance, this structure is different from the embodiment 1 shown in Fig. 1 ~ Fig. 4, and structure is in addition identical with the embodiment 1 shown in Fig. 1 ~ Fig. 4.

In the example as shown in fig. 5, in axial one end of gripper body 2, a pair hook 4 is circumferentially formed as opposed with a pair notch part 12a being formed at locking flange 12 every predetermined distance.

, as other examples although not shown, but also circumferentially can form the hook 4 of more than three respectively every predetermined distance in axial one end of gripper body 2 further.

According to the pipe fastening structure involved by this embodiments of the invention 2, gripper body 2 is circumferentially very balancedly engaged by the locking flange 12 of multiple hook 4 relative to inipple 1, thus can prevent gripper body 2 loosening relative to the locking flange 12 of inipple 1.

Thus, compared with the embodiment 1 shown in Fig. 1 ~ Fig. 4, the clamping undertaken by gripper body 2 is more stable, and then through the intensity that comes off of long term maintenance excellence, can have the advantage that can prevent by the accident caused that comes off of body A.

In addition, in the example as shown in fig. 5, the banded material becoming gripper body 2 runs through and has offered card complex hole 2e, but be not limited thereto, in the same manner as the example shown in Fig. 4, also can there is no card complex hole 2e.

[embodiment 3]

As is seen in fig. 6 or fig. 7, this embodiment 3 is following structure, in the inserting part 11 of inipple 1, be provided with annular seal 16 radially clipping the opposed position of body A with gripper body 2, described gripper body 2 is located relative to locking flange 12 vertically by hook 4, described annular seal 16 radially crimps with the inside surface A 2 of the body A clamped by gripper body 2, embodiment 1 shown in this structure from Fig. 1 ~ Fig. 4 or the embodiment shown in Fig. 52 different, the embodiment 2 shown in structure in addition with the embodiment 1 shown in Fig. 1 ~ Fig. 4 or Fig. 5 is identical.

In the example shown in Fig. 6, inserting part 11 is formed with annular convex 11e, and is embedded with annular seal 16 with its outer circumference end from the mode that the outer circumferential face of inserting part 11 is outstanding at annular convex 11e.The equipping position of annular convex 11e and annular seal 16 carries out contraposition in the mode radially overlapping with the banded material of the gripper body 2 of being located vertically relative to locking flange 12 by hook 4.

Describe in detail, with the recessed locking groove 11f of ring-type on annular convex 11e, annular seal 16 is embedded into the inside of locking groove 11f, being retained as from the mode that the outer circumferential face local of annular convex 11e is outstanding with the outer circumference end of annular seal 16 thus cannot to moving axially.

As annular seal 16, preferably use by such as by the elastomers such as rubber form can the liner 16a that forms of the O type circle etc. of resiliently deformable.It is opposed with the movable part 2c etc. at the axial substantial middle position being configured at gripper body 2 that liner 16a is configured to radially to clip body A.

In the example shown in Fig. 7, relative to the multiple annular recessed portion 11a being formed at inserting part 11, bury multiple (a pair) annular seal 16 with respective outer circumference end underground from the mode that the inner bottom surface of groove 11b is outstanding.The equipping position of annular convex 11e and annular seal 16 carries out contraposition in the mode radially overlapping with the banded material of the gripper body 2 of being located vertically relative to locking flange 12 by hook 4.

Describe in detail, with the recessed locking groove 11f of ring-type in the groove 11b of each annular recessed portion 11a, annular seal 16 is embedded into the inside of each locking groove 11f, being retained as from the mode that the inner bottom surface local of groove 11b is outstanding with the outer circumference end of annular seal 16 thus cannot to moving axially.

As annular seal 16, preferably use by such as by the elastomers such as rubber form can the liner 16b that forms of the O type circle of resiliently deformable.It is opposed with the axial two-end part of gripper body 2 that multiple (a pair) liner 16b is configured to radially to clip body A.

According to the pipe fastening structure involved by this embodiments of the invention 3, make the gripper body 2 elasticity necking deformation of being located vertically relative to the locking flange 12 of inipple 1 by hook 4, the inside surface A 2 of body A is compressed by annular seal 16 (outer circumference end of liner 16a, 16b) brute force thus, thus the inside surface A 2 of body A is adjacent to annular seal Final 16 power.

Therefore, can the reliably inside surface A 2 of sealed tube body A and the inserting part 11 of inipple 1 by the suitable clamping of gripper body 2.

Its result, by means of only suitably grip clamp main body 2, just than the embodiment 2 shown in the embodiment 1 shown in Fig. 1 ~ Fig. 4 or Fig. 5, more can prevent the disengaging with body A, even if especially as the inside surface A 2 of the body A due to Long-Time Service such as synthetic resin flexible pipe, because of permanent strain, elasticity repulsive force declines, annular seal 16 is also powerful continues the internal surface being crimped on body, therefore can not produce gap, can connect through long term maintenance without the pipe arrangement departed from.

Thus, tool has the following advantages: even have flexual body A as synthetic resin flexible pipe etc., and the position that the state that also can connect with pipe arrangement for a long time at the indoor tube of such as house etc. is placed is used as piping material.

In addition, in the example shown in Fig. 6, an annular seal 16 is configured with in the mode that the axial substantial middle position with gripper body 2 is radially opposed, in the example shown in Fig. 7, multiple (a pair) annular seal 16 is configured with in the mode that the axial two-end part with gripper body 2 is opposed, but be not limited thereto, also can change to as follows: configure annular seal 16 in the mode opposed with the position beyond the axial substantial middle position or axial two-end part of gripper body 2, or the annular seal 16 of configuration more than three quantity.

Symbol description

A-body, A2-internal surface, 1-inipple, 11-inserting part, 11a-annular recessed portion, the locking flange of 12-, 12a-notch part, 13-engagement groove, 2-gripper body, 2a-inner peripheral surface, 2d-end, 3-operation unit, 4-hook, 41-flexing portion, 41d-front-end face, 41e-rotation space, 16-annular seal, S-space portion.

Claims

1. a pipe fastening structure, is characterized in that, possesses:

Inipple, it is inserted into can the body of resiliently deformable;

Gripper body, it clips described body and can along the elastomeric radial of clamping between described inipple;

The operation unit of resiliently deformable, it is arranged at described gripper body; And

Hook, it is highlighted and is arranged at described gripper body,

Described inipple has: inserting part, and it is inserted into described body; Locking flange, it is arranged at the end of described inserting part; And engagement groove, it clips the opposition side that described locking flange is arranged at described inserting part,

Described hook has flexing portion, and described locking flange is crossed vertically along with the radial deformation of described gripper body by described flexing portion,

The front-end face in described flexing portion is configured on the axially-extending line of the inner peripheral surface of described gripper body, and is configured to radially to clip space portion between described locking flange and described engagement groove opposed.

2. pipe fastening structure according to claim 1, is characterized in that,

The described locking flange of described inipple has the notch part that the described flexing portion of described hook can be made to extend axially through, and described flexing portion has the width rotation space wider than described locking flange.

3. pipe fastening structure according to claim 1 and 2, is characterized in that,

In the described inserting part of described inipple, the opposed position of described body is radially being clipped with the end of described gripper body, circumferentially be provided with annular recessed portion, described gripper body is located relative to described locking flange vertically by described hook, and described annular recessed portion is radially chimeric with the described body clamped by described gripper body.

4. the pipe fastening structure according to claim 1,2 or 3, is characterized in that,

In the described inserting part of described inipple, annular seal is being provided with the position that described gripper body radially clips described body opposed, described gripper body is located relative to described locking flange vertically by described hook, and described annular seal radially crimps with the internal surface of the described body clamped by described gripper body.