KR102125434B1 - Clamp For Gripping Standing Type Sleeve - Google Patents

Abstract

The present invention relates to a clamp for gripping a standing pipe. The clamp for gripping a standing pipe comprises: a ring body (3) to grip a pipe (P) inserted and installed into a through hole (T) of a wall (W) at a top portion of the through hole (T); a lining (5) mounted on the ring body (3) to be interposed between the ring body (3) and the pipe (P) when gripping the pipe (P) by the ring body (3); and a coupler (7) to tighten the ring body (3) with respect to the pipe (P) when gripping the pipe (P), and loosen the ring body (3) from the pipe (3) when releasing the pipe (P). The lining (5) is coupled to the ring body (3) to be snap-detached/attached. Therefore, since the lining is interposed between the pipe and the ring body for gripping the pipe, gripping power for the pipe can be increased. Since the lining can be snap-detached/attached to the inner circumferential surface of the ring body, the assembly convenience and efficiency of the lining can be greatly improved. Since a nut receiving end and a bolt fixing end of the coupler arranged on rotating ends of a first and a second body unit are arranged and separated from each other, an eyebolt and a nut can be further tightened while the pipe is gripped. Therefore, the gripping power of the ring body with respect to the pipe can be increased.

Description

Clamp for gripping the standing conduit{Clamp For Gripping Standing Type Sleeve}

The present invention relates to a clamp for gripping a granular conduit, and more particularly, when installing various conduits through a horizontally arranged wall such as a slab of a building, the conduit can be firmly fixed against the through-hole of the wall through which the conduit passes. It relates to a clamp for gripping the granulated conduit.

In general, in a multi-layered building such as a building or apartment, granular piping is installed to connect each floor. During the construction of the building, piping pipes penetrate the slab walls of each floor so that they can be easily installed as granulated piping. Through-holes are formed in the slabs.

Therefore, since a conduit such as a granular pipe inserted into the through hole of the slab needs to be fixed to the slab, various types of clamps can be used for this. As one example, the clamp shown in FIG. 1 with reference numeral 101 (registered utility model 20-0446654) is largely made of a ring body 103, a lining 105, and a fastener 107.

Here, the ring body 103 forms a base of the clamp 101, has a circular cross-sectional shape to grip the conduit, and ends of the first and second body parts 111 and 112 are hinged so as to be opened or closed. It is connected by the branch 113. In addition, the lining 105 is mounted on the inner circumferential surfaces of the first and second torso parts 111 and 112 to increase the gripping force of the conduits by the first and second torso parts 111 and 112. In addition, fasteners 107 are provided at the other ends of the first and second body parts 111 and 112 to tighten or loosen the first and second body parts 111 and 112, and the fasteners 107 are again bolt fixing ends ( 121), a bolt 123, a nut 125, and a nut receiving end 127.

Therefore, the nut 125 is released from the bolt 123, the bolt 123 is removed from the bolt fixing end 121 and the nut receiving end 127 of the fastener 107, and then the hinge portion 113 is centered. After placing the conduits in the ring body 103 by opening the first and second torso parts 111 and 112, the first and second torso parts 111 and 112 are narrowed to the bolt fixing end 121 and the nut receiving end 127. When the bolt 123 and the nut 125 are fastened, the conduit is gripped and fixed by the lining 105.

However, this conventional clamp 101 is double-folded so that the lining 105 has a U-shape on the cross-section, and the lining 105 is elastically resilient on the first and second torso parts 111 and 112 by forcing fit. As it is inserted, there is a problem in that the lining 105 is detached from the first and second body parts 111 and 112 and disassembled and assembled accordingly.

In addition, since the fastener 107 must be fastened or released whenever the conduit is gripped or released by the ring body 103, the bolt 123 and the nut 125 are fixed to the bolt 121 and the nut receiving end ( It is separated from 127), therefore, the gripping operation of the conduit by the bolt 123 and the nut 125 is cumbersome, and there is also a problem that the bolt 123 or the nut 125 may be lost.

In particular, the bolt 123 or the nut 125 is in close contact with the bolt fixing end 121 and the nut receiving end 127 at the time of fastening, thereby maintaining the gripping state of the conduit by the first and second body parts 111 and 112. , After the bolt fixing end 121 and the nut receiving end 127 are in contact, the first and second body parts 111 and 112 cannot be held against the conduit, and thus the gripping force on the conduit cannot be further increased. There was also.

KR 20-0446654

The present invention is proposed to solve the problems of the conventional clamp as described above, and in installing various conduits through a horizontally arranged wall such as a slab of a building, a conduit installed through a wall through a through hole The purpose is to provide a clamp that can be securely fixed to the wall.

In addition, in providing the above clamp, there is another object to enable more convenient and quick mounting of the lining that grips the conduit to increase the gripping force of the clamp against the conduit.

In addition, while the attachment and detachment of the lining to the ring body as described above is convenient and quick, it is another object to make the forming of the lining for this also simpler and easier.

In addition, by increasing the gripping force for the conduit of the ring body by allowing the first and second body parts of the ring body for gripping the conduit to be held against the conduit by means of fasteners disposed at the respective rotating ends of the body. The purpose.

In order to achieve this object, the present invention is a ring body for holding a conduit installed in the through hole of the wall in the upper portion of the through hole; A lining mounted on the ring body to be interposed between the ring body and the conduit when the conduit is gripped with the ring body; And a fastener for clamping the ring body against the conduit when gripping the conduit and releasing the ring body against the conduit when gripping and releasing the conduit, wherein the lining is detachably attached to the ring body. Provided is a clamp for gripping a granular conduit that is possibly coupled.

In addition, the ring body, the first and second torso curved in a circular arc shape to engage the conduit; First and second flange portions protruding in the radial direction and extending in the circumferential direction, respectively, along the first and second body portions; And a hinge portion hinge-joining the other ends of the first and second body portions such that one end of the first and second body portions pivots and pivots around the other ends of each other to grip or release the conduit. It is preferably made.

In addition, the lining includes a fitting protrusion protruding outwardly on an outer circumferential surface in contact with the first and second body parts, and the ring body has the fitting protrusion when assembling the lining on the inner circumferential surfaces of the first and second body parts. It is preferable to include a fitting hole penetrated into the first and second body parts so as to be elastically coupled in a snap manner.

In addition, the fitting protrusion protrudes outward from the outer circumferential surface of the lining in a direction perpendicular to the line connecting the center of the hinge pin of the hinge part and the center of curvature of the first and second body parts, and when inserted into the fitting hole, the fitting hole It is preferable that a locking jaw having an inclined surface protrudes on the opposite side to be elastically deformed by, and that an undercut avoidance hole is penetrated in a portion facing the locking jaw so that an undercut does not occur due to the locking jaw during molding. .

In addition, when the lining is coupled to the first and second torso portions, it is preferable to include a seating projection protruding radially outwardly at the top of the outer circumferential surface so as to span the top edge surfaces of the first and second torso portions, respectively. .

In addition, the fastener, the first and second torso protruding radially outward on the outer circumferential surface of any one of the rotating ends, a bolt fixing end on which a hinge pin is rotatably fitted; An eye bolt pivotally coupled to the bolt fixing end to fit the hinge pin on the ring; A nut receiving end protruding radially outward from the outer peripheral surface of the other of the first and second body parts so as to face the bolt fixing end, and having a through hole through which the eye bolt passes; And a nut that is fastened to the eyebolt passing through the through hole to be supported by the nut receiving end, and that tightens or loosens the first and second body parts against the conduit.

Further, it is preferable that the first and second flange portions overlap each other to form a contact surface extending in a circumferential direction with the other one of the rotating ends of the first or second flange portions when the conduit is gripped.

In addition, it is preferable that the first and second flange portions come into contact with each other so that when the conduit is gripped, the rotating ends of the first or second flange portions form a contact surface extending in the axial direction.

According to the clamp for grasping the granular conduit of the present invention, when installing various conduits through a wall that is horizontally disposed in a building, the conduit inserted in the through hole of the wall is gripped by a clamp mounted around the through hole of the upper surface of the wall and fixed to the wall Thus, the conduit can be securely fixed to the wall.

In addition, when fixing the conduit with a clamp as above, since the lining between the ring body and the conduit for gripping the conduit is interposed, the gripping force for the conduit can be increased, and for this purpose, the lining mounted on the inner circumferential surface of the ring body is snapped to the inner circumferential surface of the ring body Since it can be detached in such a way, the assembly convenience and efficiency of the lining can be further improved.

In addition, the structure of the fitting projection for assembling the lining to the ring body as above can be optimized through a locking jaw or an inclined surface, and the fitting projection can be molded in the above form when forming the lining through an undercut evasion hole. Therefore, it is possible to easily and efficiently manufacture the lining having the fitting protrusions at a low cost while being able to conveniently and efficiently remove and attach the lining to the ring body.

In addition, since the bolt fixing end and the nut receiving end of the fastener disposed at the rotation end of each of the first and second torso portions of the ring body that grips the conduit are disposed at intervals from each other, the first and second torso in the state where the conduit is gripped It is possible to further tighten the eyebolt and nut so that the rotation end of each of the parts is closer, thereby increasing the gripping force of the ring body against the conduit.

1 is an exploded perspective view showing a conventional clamp.
Figure 2 is a perspective view showing a clamp for gripping a conduit according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of Figure 2;
4 is a longitudinal sectional view showing the clamp of FIG. 2 fixed to a wall.
FIG. 5 is a partial excerpt front view showing another embodiment of the first and second trunk rotational units illustrated in FIG. 2.
Figure 6 is a cross-sectional view of Figure 2;
7 is an enlarged perspective view of a portion A of FIG. 6,

Hereinafter, a clamp for gripping a granular conduit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The clamp of the present invention, as shown by reference numeral 1 in Figure 2, is made of a ring body (3), lining (5), and fasteners (7).

Here, first, the ring body 3 is a part constituting the base of the clamp 1, as shown in FIGS. 2 to 4, a conduit installed through a horizontally arranged wall W such as a slab of a building As it is coupled to (P), the conduit P is fixed on the wall W around the through-hole T through which the conduit P passes while holding the conduit P so as to fix the conduit P against the wall W. .

To this end, the ring body 3 is composed of the first and second body parts 11 and 12, the first and second flange parts 13 and 14, and the hinge part 15 again.

Here, the first and second torso portions 11 and 12 are parts constituting the body of the ring body 3, and as shown in FIGS. 2 to 4, conduits P interposed in the middle while facing each other. It is formed in a semi-cylindrical shape to be able to engage, and has a curved longitudinal section in a shape close to a semicircular arc. In addition, the first and second torso portions 11 and 12 are connected to each other through the hinge portion 15, which will be described later, so as to engage the conduit P as described above, so that each other end is closed. Or, as it is opened, the conduit P is gripped or released.

In addition, the first and second flange portions 13 and 14 are parts that allow the ring body 3 to be seated on the wall W, as shown in FIGS. 2 to 4, the first and second 2 Bars extending in the circumferential direction along the body parts 11 and 12, respectively, the first and second body parts 11 and 12 are projected radially to the lower or lower outer circumferential surfaces. Accordingly, the first and second flange portions 13 and 14 are connected to each other so as to be rotatable by the hinge portions 15 like the first and second body portions 11 and 12. In addition, preferably, the fixing hole 17 is penetrated at a position spaced 90 degrees in the circumferential direction from the hinge portion 15, and the first and second flange portions 13 and 14 are provided with the fixing hole 17. It is fixed to the wall (W) by a fixing bolt (not shown) coupled to the wall (W) through.

At this time, the first and second flange portions 13 and 14, as shown in FIGS. 2 and 3, when gripping the conduit P, that is, when the clamp 1 is closed, the respective rotating ends overlap each other. It can be closed. To this end, the rotating ends of the first or second flange portions 13 and 14 overlap each other to form a contact surface F extending in the circumferential direction. In this case, of course, the pivoting end may be bent so that at least one of the first or second flange portions 13 and 14 forms a contact surface F with the other.

On the other hand, the first or second flange portion (13,14) is another embodiment, as shown in Figure 5, when gripping the conduit (P) may be closed by contacting each of the rotating end with each other. In this case, the rotating ends of the first or second flange portions 13 and 14 form a contact surface F extending in the axial direction of the ring body 3, as shown.

In addition, as described above, the hinge part 15 is a means for connecting the first and second body parts 11 and 12 so as to be rotatable with each other. As shown in FIGS. 2 and 3, the first part And each of the other ends, that is, the fixed ends are hingedly coupled by the hinge pins 19 so that each of the second body parts 11 and 12 faces each other, that is, the pivoting end is pivotable. Accordingly, the first and second trunk portions 11 and 12 pivot or pivot on the respective fixed ends, that is, the hinge portion 15, to grip or release the conduit P.

The lining 5 is a means for increasing the gripping performance of the ring body 3 with respect to the conduit P, and as shown in FIGS. 2 to 4, the ring body 3, that is, the first and second body parts 11 ,12) Removably mounted on the inner circumferential surface, when the conduit P is gripped by the ring body 3, it is interposed between the ring body 3 and the conduit P. In particular, it is preferable that the lining 5 is made of a synthetic resin material, so that the ring body 3 is not directly gripped by the ring body 3 of the metal material, so that the ring body 3 makes the conduit P more effective. It can be gripped.

At this time, the lining (5) is a snap coupled to the ring body (3) for easy assembly. The coupling structure can be variously modified. In this embodiment, as shown in FIGS. 2 to 4 as such a snap coupling structure, the fitting protrusion 21 and the fitting hole 23 are provided.

Here, the fitting projection 21 is a projection that is snap-coupled to the first and second torso portions 11 and 12, as shown, lining abutting the inner circumferential surfaces of the first and second torso portions 11 and 12 It is formed to protrude outward on the outer peripheral surface of (5). Therefore, the fitting protrusion 21 is snap-coupled to the fitting hole 23 of the lining 5 when the lining 5 is assembled to the first and second trunk portions 11 and 12. In addition, the fitting hole 23 is a hole through the first and second body parts 11 and 12 to fit the fitting protrusion 21 as above, as shown, the first and second body parts 11 When assembling the lining (5) on the inner circumferential surface of the (12), the fitting projections (21) can be elastically coupled in a snap, and as a result, the lining (5) is attached to the first and second body parts (11,12) Allow it to snap.

In particular, the lining 5 in this embodiment is designed to facilitate mold separation while minimizing the number of molds used for molding when molding with synthetic resin or the like. To this end, first, the fitting projection 21 is shown in FIGS. 2 and 3 and FIGS. 6 and 7, the center of the hinge pin 19 of the hinge portion 15 and the first and second body portions 11, The direction of the arrow (S) forming a right angle with the line connecting the center of curvature of 12), that is, in the direction in which the upper and lower or right and left molds are separated when forming the lining 5, protrudes outward from the outer circumferential surface of the lining 5. In addition, the fitting protrusion 21 is a snap protrusion that is snap-coupled to the fitting hole 23, and can be elastically deformed by the fitting hole 23 when inserted into the fitting hole 23, as shown enlarged in FIG. 7. When the locking jaw 25 protrudes to the opposite side so as to be deformed, for example, as shown in FIG. 7, when the locking jaw 25 protrudes outside the center of the lining 5, the fitting protrusion 21 has a fitting hole 23 When it is pushed inward, it bends inward toward the center of the lining 5, ie upwards on the drawing. Conversely, when the locking jaw 25 protrudes inward with respect to the center of the lining 5, the fitting protrusion 21 is extended outward to be away from the center of the lining 5 when snapping. However, in any case, the fitting protrusion 21 is formed with an inclined surface 27 at the edge opposite to the direction of deformation of the leading edge, thereby reducing the resistance with the edge of the fitting hole 23 when being pushed into the fitting hole 23.

In addition, the lining 5 is formed to form the fitting protrusion 21 as above, so that an undercut does not occur due to the locking jaw 25, as shown in FIG. 7, the body portion facing the locking jaw 25 The undercut evasion hole 29 is penetrated in a direction parallel to the fitting protrusion 21. Therefore, the lining 5 is formed by forming part of the upper or lower mold to pass through the undercut evasion hole 29 to form the locking jaw 25, so that the upper and lower molds alone do not generate undercut due to the locking jaw 25. Can be.

On the other hand, the lining (5), as shown in Figures 2 to 4, the outer circumferential surface of the seating projections 31 projecting radially outward, the seating projections 31, the lining 5 is the first and second When coupled to the inner circumferential surfaces of the body parts 11 and 12, the first and second body parts 11 and 12 are applied to the upper edge surfaces of each of the first and second body parts to directly load the lining when gripping the conduit P Transfer to the second body portion (11,12).

The fastener 7 is a means for clamping or releasing the ring body 3 to grip or release the ring body 3 with respect to the conduit P, as shown in FIGS. 2, 3, and 6 When holding (P), the ring body (3) is clamped against the conduit (P), and conversely, when the gripping of the conduit (P) is released, the ring body (3) is released from the conduit (P). To this end, the fastener 7 can be manufactured in various gripping structures, as shown in this embodiment, the bolt fixing end 41, the eye bolt 43, the nut receiving end 45, and the nut 47 ).

Here, the bolt fixing end 41 is a portion for fixing the bolt used for fastening of the fastener 7, as shown in Figures 2 and 3, the first and second body parts (11,12) ) Is formed by protruding radially outward on the outer peripheral surface of any one of the rotating ends. In particular, the bolt fixing end 41 extends vertically along the axis of the ring body 3 at the tip portion, and is preferably configured to be able to rotate and securely hinge the hinge pin 49 by being rounded. In addition, the eye bolt 43 is a bolt with a ring 51 on the head, as shown, the ring 51 is fitted into the hinge pin 19 of the bolt fixing end 41, the hinge pin ( 19) is pivotably fixed to the bolt fixing end (41). In addition, the nut receiving end 45 is a means for supporting the nut 47 that is fastened to the upper eye bolt 43, as shown, as shown in the first and second body parts facing the bolt fixing end 41 ( 11,12) projecting radially outward from the outer circumferential surface of the other. However, the nut receiving end 45 is formed by cutting the groove 53 in the outer edge portion so that the end of the eye bolt 43 can be pivoted and fitted. In addition, it is preferable to form a bent end 55 with the outer end folded toward the nut 47 so that the nut 47 fastened to the eye bolt 43 does not deviate outward. Finally, the nut 47 is a part that makes a screw connection with the eye bolt 43, and when fastened with the eye bolt 43 as described above, the first and second body parts 11 and 12 are conduited ( By pressing toward the P) to allow the conduit (P) to be gripped by the first and second torso (11,12), as shown, supported by the nut receiving end (45), the fastening is released At this time, the gripping of the conduit P by the first and second trunk portions 11 and 12 is released.

Now, the operation of the clamp for gripping the granular conduit according to the preferred embodiment of the present invention will be described.

As shown in FIG. 4, in order to install a conduit P through a horizontally arranged wall W such as a slab of a building, a through hole T formed through the wall W is necessarily required. In addition, after inserting and arranging the conduit P in the through hole T, the conduit P must be fixed to the wall W, that is, the through hole T. Accordingly, the conduit P is gripped by the clamp 1 mounted around the through hole T on the upper surface of the wall W while being fitted in the through hole T, as shown in FIG.

To this end, the clamp 1 is released from the fastening of the eyebolt 43 and the nut 47 of the fastener 7 shown in FIG. 2, and the ring body 3 has first and second body parts 11, 12) is rotated around the hinge portion 15 so that the gaps.

As such, the clamps 1 are placed on the wall W to surround the conduit P and the lining 5 is in contact with the outer circumferential surface of the conduit with the first and second trunk portions 11 and 12 open. It closes.

Then, rotate the eye bolt 43 around the hinge pin 49, and insert it into the fastening groove 53 of the nut receiving end 45. The nut 47 is fastened to the tip of the eye bolt 43. Then, when the nut 47 is tightened against the eyebolt 43, the bolt fixing end 41 and the nut receiving end 45 are close to each other, and the first and second torso portions 11 and 12 are closed. The outer circumferential surface of the conduit P is pressed, and as a result, the gripping force for gripping the conduit P through the lining 5 is increased. That is, the eye bolt 43 and the nut 47 are connected to the first and second torso portions 11 and 12 to not only grip the conduit P by the ring body 3, but also to fix the bolt end 41 ) And the nut receiving end (45) are open, so the amount of tightening of the eye bolt (43) and the nut (47) can be increased or decreased, so that the first and second body parts (11, 12) of the conduit (P) It is possible to increase or decrease the gripping force.

Finally, by fixing the fixing bolts to the wall W through the fixing holes 17 to fix the first and second flange portions 13 and 14 to the upper surface of the wall W, a series of clamp 1 installation processes Is completed.

Conversely, when dismantling the conduit P, the clamp 1 may be separated from the conduit P in the reverse order from above, and detailed description thereof will be omitted.

On the other hand, since the ring body 3 and the lining 5 are detachably snapped through the fitting protrusion 21 and the fitting hole 23, the ring body 3, that is, the first and second body parts 11 and 12 The lining 5 can be quickly and easily removed and combined.

DESCRIPTION OF SYMBOLS 1 Clamp for holding a granular conduit 3 Ring body
5: lining 7: fastener
11, 12: first and second body parts 13, 14: first and second flange parts
15: hinge part 19: hinge pin
21: fitting projection 23: fitting hole
25: locking jaw 27: slope
29: undercut avoidance ball 31: seating jaw
41: bolt fixing step 43: eye bolt
45: nut receiving end 47: nut
49: hinge pin 51: ring
53: fastening groove 55: bending end
F: Contact surface P: Conduit
T: Through W: Wall

Claims (8)

A ring body (3) for holding a conduit (P) inserted into and installed in the through hole (T) of the wall (W) in the upper portion of the through hole (T);
When the conduit (P) is gripped by the ring body (3), the lining (5) mounted on the ring body (3) to be interposed between the ring body (3) and the conduit (P); And
When holding the conduit (P), the ring body (3) is clamped against the conduit (P), and when releasing the conduit (P), the ring body (3) is loosened against the conduit (P) (7);
The ring body (3),
First and second trunk portions 11 and 12 curved in an arc shape to engage the conduit P;
First and second flange portions 13 and 14 protruding in the radial direction and extending in the circumferential direction, respectively, along the first and second body portions 11 and 12; And
The first and second torso portions 11 and 12 are rotated pivotally around the other ends of the first and second torso portions 11 and 12 to grip or release the conduit P, 12) comprises a hinge portion (15) that hinge-couples the other end;
The lining (5) includes a fitting projection (21) protruding outwardly on the outer circumferential surface contacting the first and second body parts (11, 12),
The ring body (3) is the first and second torso so that the fitting protrusion (21) is elastically coupled in a snap manner when assembling the lining (5) on the inner circumferential surfaces of the first and second body parts (11, 12). It includes a fitting hole (23) penetrated through the portion (11,12),
The fitting protrusion 21 is formed in the direction perpendicular to the line connecting the center of the hinge pin 19 of the hinge portion 15 and the centers of curvature of the first and second trunk portions 11 and 12. Protruding outward from the outer circumferential surface, the locking jaw 25 having an inclined surface 27 on the opposite side is deformed to be elastically deformed by the fitting hole 23 when inserted into the fitting hole 23, and
The lining (5) is a clamp for gripping the granular conduit, characterized in that an undercut evasion hole (29) passes through a portion facing the locking jaw (25) so that an undercut does not occur due to the locking jaw (25) during molding. . delete delete delete The method according to claim 1,
The lining (5) is radially outward at the top of the outer circumferential surface so as to span the top edge surfaces of each of the first and second body parts (11, 12) when coupled to the first and second body parts (11, 12). Clamp for gripping the granular conduit, characterized in that it comprises a protruding seating projection (31). The method according to claim 1,
The fastener (7),
A bolt fixing end 41 that protrudes radially outwardly to the outer circumferential surface of any one of the first and second body parts 11 and 12, and the hinge pin 19 is rotatably fitted on one side;
Eye bolt 43 is pivotally coupled to the bolt fixing end 41 so as to fit the hinge pin 19 to the ring 51;
The first and second torso portions 11 and 12 are projected radially outwardly to face the bolt fixing end 41 at the other circumferential circumferential surface, and the eyebolt 43 is passed through at one side. Nut receiving end (45) is formed with a groove (53); And
Is fastened to the eye bolt 43 passing through the fastening groove 53 so as to be supported by the nut receiving end 45, the first and second torso (11,12) with respect to the conduit (P) A clamp for gripping a granular conduit, comprising: a tightening or loosening nut (47). The method according to claim 1,
When the conduit (P) is gripped, the first and second flange portions (13, 14) have one of the rotating ends of the first or second flange portions (13, 14) extending in the circumferential direction with the other one. Clamp for gripping a granular conduit, characterized in that they overlap each other to form a contact surface (F). The method according to claim 1,
The first and second flange portions 13 and 14 form a contact surface F at which the rotating ends of the first or second flange portions 13 and 14 extend in the axial direction when the conduit P is gripped. Clamp for gripping the granular conduit, characterized in that it is in contact with each other.

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