JPH09242937A - Locking member of pipe joint and locking structure of the pipe joint which uses the locking member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking member of a pipe joint which can lock the pipe joint by the locking member having a very simple structure to prevent idle run, facilitate positioning of a mounting position for a support member, and facilitate mounting and dismounting of an apparatus connected to the pipe joint for the purpose of adjustment and inspection and provide a locking structure of the pipe joint which uses the locking member. SOLUTION: In a condition in which a pipe joint 14 is held by a clamp member 20 for a support member 16 by bringing the pipe joint 14 which is provided in a joint part of various pipes 12 which are arranged and connected and is provided with a circular arc face into close proximity with the support member 16 arranged in the vicinity of the pipe joint 14, a locking member 38 of the pipe joint 14 is arranged and nipped between the pipe joint 14 and the support member 16 to prevent idle run of the pipe joint 14 for the support member 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe for preventing the pipe joint from idling with respect to the support member in a state where the pipe joint provided on the joint portion of various pipes is clamped on the support member. The present invention relates to a joint detent member and a pipe joint detent structure using the same.

[0002]

2. Description of the Related Art Conventionally, in the case of piping various pipes on site, the mutual end portions of the pipes are spliced together by pipe joints or extended, or the pipe joints provided at the end portions of the pipes are used. Connect other devices,
The pipe joint is positioned and fixed to a supporting member such as a rectangular frame rod provided in advance. For example, in a flexible tube for a sprinkler that is piped in an above-ceiling space, in order to connect a sprinkler head to its end side, a pipe joint is connected to the end of the flexible tube, and this pipe joint is clamped to a support member. The sprinkler head is connected to the pipe joint so that the tip end surface of the sprinkler head is directed to the room side from the hole formed in the ceiling plate.

These pipe joints and sprinkler heads are
When installing in the space above the ceiling, adjust the positioning of the pipe joint or remove the sprinkler head from the pipe joint,
It is necessary to install, adjust and inspect the sprinkler head so that when the sprinkler head is detached from the pipe joint, the pipe clamp clamped to the support member does not rotate together, for example, as shown in FIG.
As shown in (a), one corner surface of a pipe joint formed to have a polygonal cross section is brought into contact with a support member,
As shown in (a), a pipe joint having a tooth profile formed on the outer peripheral surface is brought into contact with a supporting member, or as shown in FIG. 13 (c), a vertical groove having an arcuate cross section is provided on the outer peripheral surface. While the vertical groove surface of the pipe joint is brought into contact with the support member, each pipe joint is positioned and fixed under a strong pressure by the clamp member, and the pipe joint is prevented from idling with respect to the support member.

[0004]

However, the pipe joint having a polygonal cross section as shown in FIG. 13A has a drawback that the manufacturing cost becomes high. Further, a pipe joint having a tooth-shaped vertical groove formed on the outer peripheral surface as shown in FIG. 13A can be manufactured at low cost, but the vertical groove is not easily bitten into the support member.
The pipe joint rotates together when the sprinkler head is rotated and removed, and the sprinkler head cannot be removed from the pipe joint, making maintenance and inspection difficult. Further, as shown in FIG. 13C, the pipe joint provided with the vertical groove having an arcuate cross section has a complicated shape, and thus the manufacturing cost is high.
Further, in the pipe joints of FIGS. 13A and 13C, there is a problem that the degree of freedom in setting the relative position of the pipe joint in the axial direction of the pipe joint is low, and positioning and fixing are troublesome. .

The present invention has been made in view of the above conventional problems, and an object thereof is to provide a pipe joint in the state where the pipe joint is held near a support member by a clamp member. By disposing the anti-rotation member in the gap with the support member, (1) the pipe joint can be locked by the anti-rotation member having an extremely simple structure, and idling can be prevented. (2) The degree of freedom of the mounting position of the pipe joint with respect to the support member is high, and positioning is easy. (3) To provide a detent member for easily adjusting and removing devices connected and coupled to a pipe joint and a detent structure for a pipe joint using the detent member.

[0006]

In order to solve the above problems, the invention according to claim 1 provides a pipe joint 1 having an arcuate surface 42 provided at the joint portion of various pipes 12 that are piped.
4 in the state of being brought close to the support member 16 arranged in the vicinity of the pipe joint 14 and arranged so as to embrace the pipe joint 14 with respect to the support member 16 by the clamp member 20, It is sandwiched between the supporting member 16 and
It is composed of a pipe joint rotation stop member 38 for preventing the pipe joint 14 from idling with respect to the support member 16.

According to the second aspect of the present invention, the detent member 38 has a first abutment surface 40 which abuts the support member 16 and a second abutment surface 4 which abuts the pipe joint 14.
2 may be provided.

According to the third aspect, the second abutment surface 42 may be provided with at least two ridges or claw pieces 46 that come into contact with the arc surface 13 of the pipe joint 14. Good.

According to the fourth aspect, the second abutment surface 42 of the detent member 38 is the arc surface 13 of the pipe joint 14.
The arcuate concave surface 44 may be in close contact with.

According to the fifth aspect, the rotation stopping member 38 may be formed in a substantially trapezoidal shape in a plan view.

According to the sixth aspect, the second abutment surface 42 of the detent member 38 is the arc surface 13 of the pipe joint 14.
And a claw piece 46 that comes into line contact with the
The portion of the fitting surface 42 other than the claw piece 46 may be formed so as to be recessed so as not to come into close contact with the arc surface 13 of the pipe joint 14 at a gap 48.

According to a seventh aspect, the pipe joint 14
A tooth profile 52 may be engraved on the arcuate surface 13 and the second abutment surface 42 of the rotation stopping member 38 may be provided with a stop tooth profile 54 that meshes with the tooth profile 52.

According to the eighth aspect, the detent member 38 may be made of a soft member 56.

According to a ninth aspect of the present invention, the detent member 38 is arranged such that the contact surface of the support member 16 with respect to the support member 16 is tangential to the arc surface 13 of the pipe joint 14. The support member 16 and the arcuate surface 13 of the pipe joint 14 in this state are in contact with both the arcuate surface 13 of the pipe joint 14 and the support member 16 in the gaps 60, 60 on both sides of the tangent line 58 of the arcuate surface 13 of the pipe joint 14. It may be the wire-shaped frame members 62, 62 arranged so as to be in contact with each other.

According to a tenth aspect of the invention, the detent member 38 has locking pieces 70, 70 projecting from both sides of the upper part of the detent member 38 and engaged with the clamp member 20 so as to straddle the clamp member 20. It may be provided.

Next, the present invention according to claim 11 relates to a pipe joint 14 provided on the joint portion of various pipes 12 provided with pipes and having an arcuate surface 13, and a support arranged near the pipe joint 14. The member 16 and the pipe joint 14 in close proximity to the support member 16
And a clamp member 20 that is fixed to the support member 16 on the opposite side of the pipe joint 14 and is fixed by a clamp 18 that holds the pipe joint 14 and the support member 1.
6, a pipe joint anti-rotation structure 10 in which a pipe joint anti-rotation member 38 for preventing idling of the pipe joint 14 with respect to the support member 16 is sandwiched and arranged.

According to a twelfth aspect, the pipe joint 1
A tooth profile 52 is formed on the outer peripheral surface of the pipe 4, and a stop tooth profile 54 that engages with the tooth profile 52 on the outer peripheral surface of the pipe joint 14 is formed on the contact surface 42 of the rotation stopping member 38 with the pipe joint 14. It may be done after that.

According to a thirteenth aspect, the pipe joint 1
A soft member 56 may be circumferentially provided on the outer peripheral surface of No. 4 or the contact surface 42 of the anti-rotation member 38.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION A detent member for a pipe joint according to the present invention is a support member having a pipe joint provided with an arcuate surface provided at a joint portion of various pipes arranged in the vicinity of the pipe joint. The pipe joint and the supporting member are sandwiched between the pipe joint and the support member in a state of being disposed so as to be close to the support member and held by the clamp member with respect to the support member. The detent member is fixed to the support member using an adhesive or the like. Then, the pipe joint can be reliably positioned and fixed with respect to the support member by pressing the pipe joint to the anti-rotation member while tightening the pipe joint to the support member side with the clamp member. Also, when attaching or detaching other device parts connected to this pipe joint for adjustment or inspection, it is possible to prevent idling of the support member of the pipe joint, and to adjust and check other device parts connected to the pipe joint. It can be done easily. The detent member may not be fixed to the support member with an adhesive or the like, but the pipe joint may be fastened to the detent member with a clamp member in a state where the detent member is in contact with the support member. Even in this case, the pipe joint can be reliably positioned and fixed to the support member, and the idle rotation of the pipe joint can be prevented.

The detent member has a first abutment surface that abuts on the support member and a second abutment surface that abuts on the pipe joint side. The first abutment surface is formed as a flat surface so as to be in close contact with the side wall surface of the support member formed of a square frame rod, and the second abutment surface is arranged in a direction intersecting with the support member. It is formed into an arcuate concave surface that comes into close contact with the arcuate surface on the outer circumference of the joint. When a force for rotating the pipe joint acts on the pipe joint while the pipe joint is fastened to the support member 16 by the clamp member, the whirl-stop member 38 tries to move in the rotation direction, but the chevron portion on the end side of the arc concave surface is formed. Due to the wedge action and the tightening pressure of the clamp member, the pipe joint 14 becomes unrotatable and is reliably prevented from rotating. Further, the first contact surface of the rotation preventing member does not move in close contact with the side wall surface of the supporting member, and is stably held. Further, the first and second contact surfaces may be formed in a rough surface shape in order to increase frictional resistance with respect to the circular arc surfaces of the support member and the pipe joint.

The detent member is formed of metal, hard synthetic resin, hard rubber or the like into a substantially trapezoidal shape in plan view, and a first contact surface for contacting the support member is provided on the bottom side of the trapezoidal shape. A second contact surface is provided on the upper side for contacting the arc surface of the pipe joint. The second contact surface is provided with a ridge or a claw piece that abuts at least two points on the arc surface of the pipe joint. When a rotational force is applied to the pipe joint, the bumps or claws of the detent member are caught in the direction in which the pipe joint rotates, and a large frictional force acts on the arc surface of the pipe joint and the detent member to ensure the pipe joint. It can prevent idling.

Further, the second fitting surface of the rotation preventing member has a claw piece which comes into line contact with the arc surface of the pipe joint, and the portion other than the claw of the second fitting surface is the arc of the pipe joint. It may be formed so as to be recessed so as not to come into close contact with the surface at a distance. When a force for rotating the pipe joint is applied, the claw piece that comes into line contact with the pipe joint is caught in the bite into the recessed side of the second abutment surface, and the pipe joint and the detent member are formed. It is possible to reliably prevent the idling of the pipe joint while the frictional resistance of is greatly working.

A tooth profile may be engraved on the arcuate surface of the pipe joint, and a stop tooth profile that meshes with the tooth profile may be provided on the second abutment surface of the anti-rotation member. These tooth profiles and stop tooth profiles can be inexpensively formed by knurling, and the mutual engagement of these tooth profiles can prevent the pipe joint from turning around. The tooth profile of the pipe joint is provided on the entire circumferential surface or at the portion joined to the rotation preventing member. Further, the locking teeth of the rotation stopping member may be provided on the entire second contact surface or on both end sides.

Further, the detent member may be formed of a soft member. Although the anti-rotation member may be entirely formed of a soft member, the soft member is coated along the second contact surface because it is necessary to increase the frictional resistance with the pipe joint. As the soft member, rubber, vinyl or the like is used by adhesion. The outer peripheral surface of the pipe joint may be an arcuate surface, but it may be provided with a tooth profile to increase frictional resistance with the soft member. As a result, when the rotational force acts on the pipe joint, the soft member of the anti-rotation member that comes into contact with the arcuate surface of the pipe joint is compressed, mutual friction resistance is increased, and the idle rotation of the pipe joint can be effectively prevented. . In addition, a soft member is provided around the outer peripheral surface of the pipe joint,
The engagement surface of the anti-rotation member may be provided with a stop tooth shape that engages with the soft member of the pipe joint. Even in this case, even if a rotational force acts on the pipe joint, the retaining teeth formed on the abutment surface of the rotation preventing member are engaged so as to bite into the soft member on the outer peripheral surface of the pipe joint to prevent the idle rotation of the pipe joint. Can be effectively prevented.

Further, the anti-rotation member is brought into contact with the support member such that the contact surface of the support member is tangential to the arc surface of the pipe joint, and in this state, the support member and the pipe are brought into contact with each other. It may be composed of a wire-shaped frame member arranged in the gap on both sides of the tangent to the arc surface of the joint so as to contact both the arc surface of the pipe joint and the supporting member. The wire frame member can be easily bent,
In addition, it is lightweight and can be manufactured at low cost, making it easy to carry to the site and improving construction efficiency.

Further, the anti-rotation member may be provided with locking pieces which are provided on both sides of an upper portion of the anti-rotation member and which are engaged with the clamp member so as to straddle the clamp member. The detent member can be attached to the clamp member in a drop shape from above the gap between the pipe joint and the support member.
There is no need to bond the contact surface to the support member, and it can be easily installed.

Next, the rotation stopping structure of the pipe joint of the present invention is as follows.
A pipe joint provided in the joint portion of various pipes provided with an arcuate surface, a support member arranged in the vicinity of the pipe joint, and a circulation member so as to hold the pipe joint in close proximity to the support member. And a clamp member fixed on the opposite side of the pipe joint with a clamp abutting against the support member. Further, between the pipe joint and the support member, a whirl-stop member of the pipe joint for preventing idling of the pipe joint with respect to the support member is sandwiched and arranged. As a result, the pipe joint can be reliably positioned and fixed to the support member, and the pipe joint idles with respect to the support member when other device parts connected to the pipe joint are detached for adjustment or maintenance points. Without having to adjust the other device parts connected to the pipe joint, maintenance and inspection can be done easily.

As the clamp member, a metal band band formed in a substantially U shape in a plan view, or a U-clip in the shape of a wire is used, and as a tightening member, a member formed in a wedge shape in side view, or , Tightening bolts may be used. As the support member, for example, a rectangular frame rod for suspending and supporting the ceiling plate can be used in the space above the ceiling, and the rotation preventing member is fixed to the side wall surface of the rectangular frame rod with an adhesive or the like. The pipe joint may be fastened to the rotation preventing member with the clamp member in a state where the rotation preventing member is simply brought into contact with the side wall surface of the square frame rod.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a detent member for a pipe joint will be described below while explaining a detent structure for a pipe joint according to the present invention with reference to the accompanying drawings. 1 and 2 show a detent structure 10 for the pipe joint. In the figure, a pipe joint detent structure 10 is provided in a joint portion of various pipes 12 that are piped, and is arranged in the vicinity of the pipe joint 14 having an arc surface 13 on an outer peripheral surface thereof. Support member 16
And is circulated so as to hold the pipe joint 14 which is brought close to the support member 16, and the support member 16 is provided on the opposite side of the pipe joint 14.
Clamp member 2 fixed to the tightening tool 18 abutting on the
0.

In FIG. 1, a union 22 provided at an end portion of a sprinkler flexible tube 12a piped in a space C above the ceiling is connected to an upper end side of a pipe joint 14, and a sensing element is provided at a lower end of the pipe joint 14. The sprinkler equipment is shown in which the sprinkler head 24 in which the above are installed is screwed and connected. The pipe joint 14 is formed of metal or the like into a tubular shape. A male screw (not shown) is formed on the outer periphery of the upper end of the pipe joint 14 so that the union 22 on the flexible tube 12a side is screwed, and a female screw for screwing and fixing the sprinkler head 24 is further formed on the inner peripheral face of the lower end side. Has been formed. A sprinkler head 24 is screwed to the end of the sprinkler flexible tube 12a via a pipe joint 14 so as to be able to stand upright.

The support member 16 is composed of, for example, a rectangular frame rod which is installed substantially horizontally in the space C behind the ceiling for suspending and supporting the ceiling plate 26. The pipe joint 14 is vertically positioned on the support member 16 and is fixed by a clamp member 20 so that the height position of the sprinkler head 24 at the lower end can be simultaneously positioned. As shown in FIGS. 1 and 2, the clamp member 20 is made of a metal strip plate, and is formed as a strip band 28 that is bent into a substantially U shape in plan view so as to hold the pipe joint 14. Both ends of the band band 28 are divided into a forked band frame 30 so that the band member 28 can be inserted into the support member 16. At an end of the bifurcated band frame 30, a hook 32 is bent toward the inner surface facing the hook 32 and is engaged with the fastening tool 18.
32 is provided. The tightening tool 18 is made of a rigid metal plate or the like, and is formed in a U-shaped vertical frame 34 in plan view. Both side plates 36, 36 of the vertical frame 34 are shown in FIG.
As shown in, the width is reduced in a wedge shape from the upper end to the lower end.

As a result, the hooks 3 at the end portions of the forked band frames 30 and 30 at both ends of the band band 28 holding the pipe joint 14 are held.
The vertical frame 34 is pushed downward while the two and 32 are attached to the both side plates 36, 36 of the vertical frame 34 which is abutted on the support member 16 in a cross shape on the opposite side of the pipe joint 14. The pipe joint 1 is formed by the wedge action of both side plates 36, 36 of the mold 34.
4 is fastened in the direction of the support member 16. In addition, the clamp member 20 is not necessarily limited to the band band, for example,
Alternatively, the two U-shaped rods may be engaged with the pipe joint to penetrate the abutting plate that is in contact with the support member, and a male screw may be formed on the protruding portion of the U-shaped rod to fasten the nut.

Then, the pipe joint 14 and the support member 1
A pipe stop member 38 for preventing the idle rotation of the pipe joint is sandwiched and arranged between 6 and 6.
An adhesive or the like is applied to the surface of the supporting member 16 that is to be attached to the supporting member 16 and is fixed to the supporting member. The detent member 38 may be simply brought into contact with the support member 16 without being fixed with an adhesive. In the pipe joint detent structure 10, the clamp member 2
When the pipe joint 14 is tightened to the support member 16 at 0, the pipe joint 1
4 is in a state of being pressed against the rotation preventing member 38, and the pipe joint 14 can be reliably positioned and fixed without being unstable and moving with respect to the support member 16 due to this pressure. Also, when other device parts connected to the pipe joint 14, for example, the sprinkler head 24 connected to the flexible hose 12a via the pipe joint 14 are attached or detached for adjustment or inspection, the device is pressed against the detent member 38. The pipe joint 14 does not run idle, and for example, the sprinkler head 24 connected to the pipe joint 14 can be surely attached / detached in the space C above the ceiling to easily perform adjustments, inspections, and the like.

As shown in FIGS. 2 and 3, the detent member 38 sandwiched between the pipe joint 14 and the support member 16 is made of metal,
The block body is made of a hard synthetic resin, a hard rubber or the like, and has a first contact surface 40 that contacts the support member 16 and a second contact surface 42 that contacts the pipe joint 14 side. ing. As shown in FIG. 3, the first abutment surface 40 is formed as a flat surface that is in close contact with the side wall surface 16a of the support member 16 formed of a square frame rod, and the second abutment surface 42 is a support member. 1
6 is formed on a circular arc concave surface 44 that comes into close contact with the circular arc surface 13 on the outer circumference of the pipe joint 14 that is arranged in the direction intersecting with 6.

As a result, the pipe joint 14 is attached to the clamp member 2
In the state where it is fastened to the support member 16 at 0,
For example, when a force that rotates in the direction of arrow P shown in FIG. 2 and FIG. 4 acts, the anti-rotation member 38 is caused by the frictional resistance between the arc surface 13 of the pipe joint 14 and the arc concave surface 44 of the anti-rot member 38.
Try to move together in the direction of arrow P, but since the pipe joint 14 is clamped by the clamp member 20, the arcuate concave surface 44 and the arcuate surface 13 are tightened more strongly, and at the same time, the frictional force also increases, so that It will prevent co-rotation. In the embodiment, the arcuate surface of the pipe joint 14 and the arcuate concave surface 44 of the detent member 38 are in close contact with each other,
The anti-rotation effect is only required if there is a shortest distance h between the circumferential surface of the pipe joint 14 and the support member 16 and two contact points on both sides other than this shortest distance. Therefore, in the present embodiment, the pipe joint 14 and the detent member 38 are in contact with each other by surface contact, but as will be described later, the pipe joint 14 and the anti-rotation member 38 are attached only at two locations H1 and H2 on both sides, and the central portion is depressed. It may be formed so as to be spaced apart and not in contact with each other. Here, in the embodiment, as described above, the wedge effect of the end portion E of the arcuate concave surface 44 and the tightening pressure by the clamp member prevent the pipe joint 14 from rotating and reliably prevent rotation. In addition, the first contact surface 40 of the detent member 38 and the support member 16
Due to the frictional resistance with the side wall surface 16a, the detent member 38 is stably held without moving with respect to the support member 16. In addition, the first and second contact surfaces 40 and 42 are the support members 1
6 and the pipe joint 14 may be formed in a rough surface to increase the frictional resistance to the contact surface.

The anti-rotation member 38 has a substantially trapezoidal shape in a plan view, and is formed to have a height in close contact with the side wall surface 16a of the support member 16. A first contact surface 40 for contacting the support member 16 is provided on the bottom side of the substantially trapezoidal shape, and a second contact surface 40 for contacting the arc surface 13 on the outer periphery of the pipe joint 14 is provided on the upper side of the substantially trapezoidal shape. A surface 42 is provided. As a result, since the detent member 38 is formed in a substantially trapezoidal shape in a plan view, the first abutment surface 40 on the support member 16 abuts more than the second abutment surface 42 on the arcuate surface 13 of the pipe joint 14. A large area can be taken and frictional force can be increased to reliably prevent rotation.
Moreover, since the shape structure is simple, it can be arranged in a stable state between the supporting member 16 and the supporting member 16 and the pipe joint 14.
It never leaves the gap between. Further, since it has a simple structure, the manufacturing cost is low and it can be easily used while being carried on site.

Next, in FIG. 5, the pipe joint 14 and the support member 1 are shown.
A rotation stopping member 3 according to another embodiment sandwiched between
8 is shown. In the following description of the embodiment, the same members as those of the previous embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The detent member 38 of this embodiment includes a first contact surface 40 that contacts the support member 16 and a second contact surface 42 that contacts the arc surface 13 of the pipe joint 14. On the mounting surface 42 side, there are provided at least two claw pieces 46, 46 or bumps that abut on the circular arc surface 13 of the pipe joint 14. This pipe joint 14 is held by the clamp member 20 as in the previous embodiment, and the clamp member 2 is held.
0 is locked to a wedge-shaped tightening tool 18 that is in contact with the support member 16 on the opposite side of the pipe joint 14.

As a result, for example, when a force for rotating the pipe joint 14 acts in the direction of arrow P in FIG. 5, of the claw pieces 46, 46 contacting the arc surface 13 of the pipe joint 14 at two points. A force is exerted that causes one of the claw pieces 46 to be wound in the direction of the arrow P in which the pipe joint 14 rotates. Pipe fitting 14 at the same time
Is clamped to the support member 16 by the clamp member 20, so that the claw piece 46 that comes into line contact with the arc surface 13 of the pipe joint 14 is caught in the bite shape to increase the frictional resistance. It is possible to reliably prevent idling of the pipe joint 14 with respect to 16. Further, when a force for rotating the pipe joint 14 in the direction opposite to the arrow P in FIG.
The other claw piece 46 is wound in the direction opposite to the arrow P, and the idle rotation of the pipe joint 14 can be similarly prevented. In addition, although the claw pieces 46, 46 that are in contact with the circular arc surface 42 of the pipe joint 14 at two locations are shown in FIG. 5, the present invention is not limited to this, and the contact portions at two locations H1 and H2 on both sides. As long as there is such a protrusion, it is possible to sufficiently prevent idling even in the case of a ridge having an R-shaped non-sharpened end instead of a sharply sharpened claw-like tip.

As shown in FIG. 5, the second detent member 38
The contact surface 42 has claw pieces 46, 46 that come into line contact with the arc surface 13 of the pipe joint 14, and the second contact surface 42.
The portions other than the claw pieces 46, 46 are formed into a concave surface 50 that does not come into close contact with the arc surface 13 of the pipe joint 14 with a gap 48. Arc surface 13 of this pipe joint 14
By forming the concave surface 50 that does not adhere to the second
When the force for rotating the pipe joint 14 is applied, the claw pieces 46, 46 of the contact surface 42 have an arc surface 1 of the pipe joint 14 of the claw piece 46.
It becomes possible to sharply cut into 3
It is possible to reliably prevent the idle rotation.

Next, in the embodiment shown in FIG. 6, the tooth profile 52 is engraved on the arc surface 13 of the pipe joint 14, and the second contact surface 42 of the rotation preventing member 38 is engaged with the tooth profile 52. A locking tooth profile 54 is provided. Depending on the materials of the pipe joint 14 and the detent member 38, mutual frictional resistance may be small, and the end side of the arcuate concave surface 44 of the detent member 38, the claw piece 46, etc. may not be drawn in the rotational direction of the pipe joint 14. . For this purpose, the tooth profile 52 is formed on the circular arc surface 13 of the pipe joint 14 by using, for example, a knurl, and at the same time, the locking tooth profile 54 that meshes with the tooth profile 52 is also formed on the circular arc concave surface 44 of the detent member 38 by the knurl. When the whirl-stop member 38 is sandwiched between the pipe joint 14 and the support member 16, the tooth profile 52 of the circular arc surface 13 of the pipe joint 14 and the tooth profile 54 provided on the circular arc concave surface 44 of the whirl-stop member 38 are The idle rotation of the pipe joint 14 can be reliably prevented while engaging.
In the figure, the detent member 38 has its second contact surface 42.
Although the stop tooth profile 54 is provided on the entire surface of the circular arc concave surface 44, the present invention is not limited to this, and the stop tooth profile 54 may be provided on a part of both ends of the circular arc concave surface 44, for example.

In the embodiment shown in FIG. 7, the soft member 5
A detent member 38 formed of 6 is shown. As the soft member 56, for example, rubber, soft synthetic resin, or the like is used. Then, along the arcuate concave surface 44 of the rotation preventing member 38, the soft member 56 is adhered in a covering shape by an arbitrary thickness. Thereby, the arc surface 13 of the pipe joint 14
Then, the soft member 56 bonded along the arcuate concave surface 44 of the detent member 38 is joined. Then, when the rotational force acts on the pipe joint 14, the soft member 5 bonded to the arcuate concave surface 44.
The end E side of 6 is compressed in the rotational direction of the pipe joint 14 of the pipe joint 14 and the friction resistance is increased while the pipe joint 14 and the rotation preventing member 38 are in surface contact with each other under a strong pressure, so that the support member 16 of the pipe joint 14 with respect to the support member 16. It is possible to effectively prevent idling.

The arcuate surface 13 of the pipe joint 14 has a tooth profile 5
2 may be provided to increase the contact resistance of the detent member 38 with the soft member 56. In the embodiment in which the tooth profile 52 and the locking tooth profile 54 are occluded, it is necessary to manage the dimensions of the occlusal teeth. Instead of this, in the present embodiment, the tooth profile and the soft member are simply joined in a compressed state, and no trouble is required. Further, instead of laying the soft member 56 along the arcuate concave surface 44 of the whirl-stop member 38, the whirl-stop member 38 may be entirely made of a slightly hardened soft member 56.

In the embodiment shown in FIG. 8, a soft member 56 is provided around the arcuate surface 13 of the pipe joint 14, and a claw piece provided on the soft member 56 on the side of the second fitting surface 42 of the detent member 38. Four
6, 46 are engaged. In the present embodiment, the clamp member 20 tightens the pipe joint 14 toward the support member 16, and at the same time, the claw pieces 46 and 46 of the detent member 38 are inserted into the soft member 56 on the outer periphery of the pipe joint 14. Even if a rotational force acts on the pipe joint 14 in this state, the claw piece 46 causes the soft member 5 to move.
6 is inserted, the frictional resistance between the soft member 56 and the claw piece 46 is increased, and the idling of the pipe joint 14 can be prevented. By providing a tooth profile that engages with the soft member 56 on the second abutment surface 42 instead of the claw piece 46, it is possible to similarly prevent the twisting.

In FIGS. 9, 10 and 11, the support member 16 is brought into contact with the pipe joint 14 so that the contact surface of the support member 16 and the arcuate surface 13 of the pipe joint 14 are tangential to each other. Within the gaps 60, 60 on both sides of a tangent line 58 that abuts the support member 16 and the arcuate surface 13 of the pipe joint 14 in the longitudinal direction, and contact both the arcuate surface 42 of the pipe joint 14 and the support member 16. A wire-shaped frame member 62 arranged so as to be in contact with each other,
A detent member 38 formed of 62 is shown. In the figure, the frame members 62 and 6 arranged in parallel in the vertical direction.
The upper end of 2 is a V-shaped frame 6 formed by bending in the horizontal direction.
It is serially installed in 4. Further, L-shaped frames 66, 66 are bent upward at the lower ends of the frame members 62, 62, and are fastened to the band bands 28, 28 of the clamp member 20 at the upper ends of the L-shaped frames 66, 66. The hooks 68, 68 are bent.

As a result, the V-shaped frame 64 is mounted on the support member 16 by inserting the frame members 62, 62 from above on both sides of the vertical tangent line 58 where the pipe joint 14 and the support member 16 contact each other. Further, hooks 68, 68 at the upper ends of the L-shaped frames 66, 66 are attached to the band bands 28, 28. At this time, the frame members 62 and 62 are arranged on both sides of the vertical tangent line 58 between the pipe joint 14 and the support member 16 by the spring biasing action of the L-shaped frames 66 and 66. When the pipe joint 14 is about to rotate, one of the frame members 62, 62 is caught in the gap between the pipe joint 14 and the support member 16 to cause mutual frictional resistance between the pipe joint 14 and the detent member 38. Is increased, and the idling of the pipe joint 14 can be reliably prevented. Further, the frame member can be manufactured at a low cost by using a wire or the like as a material, and can be easily mounted on the contact surface between the pipe joint and the support member while being lightweight and easily carried.

In the embodiment shown in FIG. 12, the detent member 38 is provided.
The anti-rotation member 38 having locking pieces 70, 70 projectingly provided on both sides of the upper part of the above and engaging with the clamp member 20 so as to straddle the clamp member 20 is shown. In the figure, the detent member 38 is fixed to the front side of a support plate 72 that can be inserted like a drop into the clamp member 20 that holds the pipe joint 14 in a substantially U shape, and the upper ends of both side ends of the support plate 72 are fixed. Locking pieces 70, 70 project horizontally from the position. As a result, the detent member 38 is dropped from above the gap between the pipe joint 14 and the support member 16 together with the support plate 72, and the locking pieces 20, 20 are attached to and supported by the clamp member 20 while the detent member 38 is supported. Can be easily installed.

As described above, according to the present invention, the pipe joint 14 is provided at the joint portion of various pipes connected to the pipe and the support member 16 arranged in the vicinity of the pipe joint 14 by the clamp member 20. In the tightened state, the rotation stop member 38 is sandwiched between the pipe joint 14 and the support member 16 to prevent the pipe joint from idling. The pipe joint 14 can be reliably fixed and positioned in a state where the pipe joint 14 connected to various pipes that have been piped is locked to the support member 16 by the clamp member 20. In addition, when adjusting various equipment parts connected to the pipe joint 14 or attaching and detaching for maintenance and inspection, the pipe joint 14 can be easily removed from the pipe joint 14 without idling. The adjustment or maintenance inspection can be easily performed.

[0048]

According to the detent member for a pipe joint according to claim 1 of the present invention, a pipe joint having an arcuate surface provided on the joint portion of various pipes connected to the pipe joint is provided near the pipe joint. In a state where it is arranged so as to embrace this pipe joint with respect to the supporting member by the clamp member in the vicinity of the arranged supporting member,
The clamp member is sandwiched between the pipe joint and the support member to prevent the pipe joint from idling with respect to the support member, and thus the pipe joint connected to various pipes connected to the support member is clamped to the support member. When the sprinkler head is connected to the sprinkler pipe joint, for example, if the sprinkler head is connected to the sprinkler head, adjust the sprinkler head, or install or remove it during maintenance or inspection. Sometimes it can be easily detached from the pipe joint, and the sprinkler head can be easily adjusted or maintained.

According to a second aspect of the present invention, the detent member has a first abutment surface abutting against the support member and a second abutment surface abutting against the pipe joint side. As a result, at the time of various operations such as applying rotation to the pipe joint, the rotating operation or force is used to apply a large rotational tightening force and frictional force to the pipe joint with the support member as a base, so that the pipe joint is It is possible to reliably prevent the idling of the pipe joint with respect to the support member while stably holding and holding the support member against the support member.

According to a third aspect of the present invention, the second fitting surface is provided with at least two ridges or claws which are in contact with the circular arc surface of the pipe joint, thereby rotating the pipe joint. Even if force is applied, a ridge or a claw piece abuts on the two circular arc surfaces of the pipe joint, and a force that causes the abutting portion to be wound in the direction in which the pipe joint rotates is generated. As a result of a large frictional force acting on the arcuate surface of the pipe joint and the anti-rotation member, the idle rotation of the pipe joint with respect to the support member can be reliably prevented.

According to a fourth aspect of the present invention, the second contact surface of the detent member is an arc concave surface that comes into close contact with the arc surface of the pipe joint. Since the arcuate concave surfaces come into close contact with each other, the sliding surface area increases, and when the rotational force acts on the pipe joint, the detent member also moves in the same direction, so that the wedge effect of the arcuate concave face can surely prevent idling of the pipe joint.

According to the fifth aspect, since the detent member is formed in a substantially trapezoidal shape in plan view, the detent member is formed in a substantially trapezoidal shape in plan view. Since the contact surface can be made large and the shape and structure are simple, it can be sandwiched and arranged in a stable state with the supporting member, and it is not easily separated from these gaps. Further, since it has a simple structure, the manufacturing cost is low and it can be easily used while being carried on site.

According to a sixth aspect of the present invention, the second abutment surface of the detent member has a claw piece that comes into line contact with the arc surface of the pipe joint, and the claw piece of the second abutment surface is provided. The parts other than are formed so as to be spaced from the arc surface of the pipe joint so as not to come into close contact with each other, so that even if a force for rotating the pipe joint is applied, the pipe joint comes into linear contact. It is possible to reliably prevent the idling of the pipe joint while the abutting claw pieces act so as to bite into the arc surface of the pipe joint.

According to a seventh aspect of the present invention, a tooth profile is formed on the arcuate surface of the pipe joint, and a stop tooth profile that meshes with the tooth profile is provided on the second abutment surface of the detent member. As a result, the tooth profile on the arc surface of the pipe joint engages with the tooth profile on the second attachment surface of the anti-rotation member to reliably prevent idling rotation of the pipe joint.

According to the eighth aspect, since the detent member is made of a soft member, the contact portion of the detent member contacting the arc surface of the pipe joint is compressed in the rotation direction of the pipe joint. The pipe joint and the anti-rotation member easily come into surface contact with each other, whereby the frictional resistance is increased and the idling of the pipe joint with respect to the support member can be effectively prevented.

According to a ninth aspect, the detent member is brought into contact with the support member such that the contact surface of the support member is tangential to the arc surface of the pipe joint, and In this state, the wire-like frame member is arranged so as to be in contact with both the circular arc surface of the pipe joint and the supporting member in the space on both sides of the tangent line of the circular arc surface of the pipe joint with the supporting member. The frame members arranged on both sides of the tangential contact portion between the pipe joint and the support member can be caught in the gap between the pipe joint and the support member, which are about to rotate, to prevent the pipe joint from idling. Further, the frame member can be manufactured at a low cost by using a wire or the like as a material, is lightweight and can be easily mounted on the contact surface between the pipe joint and the support member while being easily carried.

According to a tenth aspect of the present invention, the detent member is provided with projecting pieces on both sides of the upper part of the detent member and is provided with locking pieces that are engaged with the clamp member so as to straddle the clamp member. Since the locking pieces are provided on both ends of the upper portion of the rotation preventing member, the work of mounting the rotation preventing member between the pipe joint and the support member can be easily performed.

Next, according to the pipe joint detent structure according to claim 11, a pipe joint having an arcuate surface provided in the joint portion of various pipes arranged and a pipe joint arranged in the vicinity of the pipe joint. A clamp member which is fixed to the support member on the opposite side to the support member with a clamp, and a pipe for preventing idling of the pipe joint with respect to the support member is provided between the pipe joint and the support member. Since the detent member of the joint is arranged so as to be sandwiched, the pipe joint fixed to the pipe joint jointed to various pipes is fixedly positioned in the state where the clamp member is locked to the support member, for example, If the sprinkler head is connected to the sprinkler pipe joint, the sprinkler head can be easily removed from the pipe joint during adjustment or installation / removal during maintenance / inspection. Or it can be easily performed maintenance and inspection.

According to a twelfth aspect, a tooth profile is formed on the outer peripheral surface of the pipe joint, and a tooth surface of the pipe joint engages with the tooth profile of the pipe joint. By forming the locking tooth profile, the tooth profile of the pipe joint is engaged with the locking tooth profile of the abutment surface of the anti-rotation member, and the idle rotation of the pipe coupling can be reliably prevented.

According to the thirteenth aspect, a soft member is provided around the outer peripheral surface of the pipe joint or the contact surface of the anti-rotation member, so that the soft member is provided around the outer peripheral surface of the pipe joint. It is possible to prevent idle rotation of the pipe joint by engaging the soft member with a tooth profile of the fitting surface of the anti-rotation member, a claw piece or the like. Further, the tooth profile of the arc surface of the pipe joint engages with the soft member provided around the fitting surface of the rotation preventing member, and when the rotational force acts on the pipe joint, the soft member is compressed in the rotational direction by the tooth profile and friction is generated. Resistance is increased, and idling of the pipe joint with respect to the support member can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a front view of a rotation preventing structure for a pipe joint according to an embodiment of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a perspective view of a detent member.

FIG. 4 is an enlarged arrow view taken along the line AA of FIG.

FIG. 5 is an explanatory plan view showing the engagement between the circular arc surface of the pipe joint and the claw piece of the rotation preventing member.

FIG. 6 is an explanatory plan view showing the engagement between the arcuate surface of the pipe joint and the tooth shape of the detent member.

FIG. 7 is an explanatory plan view in which a soft member is arranged on a surface of the rotation preventing member that is attached to the pipe joint.

FIG. 8 is an explanatory plan view showing a state in which a soft member is arranged on the outer peripheral surface of the pipe joint and the claw pieces of the rotation stopping member are engaged with each other.

FIG. 9 is a perspective view of a detent member made of a wire-shaped frame member.

FIG. 10 is a perspective view of a state in which a detent member formed of a frame member is mounted between the pipe joint and the support member.

11 is an explanatory plan view in which the detent member shown in FIG. 8 is arranged on the joint surface between the pipe joint and the support member.

FIG. 12 is a perspective explanatory view of a detent member in which a locking piece is engaged so as to straddle a clamp member.

FIG. 13 is an explanatory plan view showing a state in which a plurality of conventional pipe joints are fixed to a support member.

[Explanation of symbols]

 10 Pipe Stopping Structure 12 Pipes 13 Arc Surface 14 Pipe Joint 16 Supporting Member 18 Tightening Tool 20 Clamping Member 38 Rotation Stopping Member 40 First Contact Surface 42 Second Contact Surface 44 Arc Concave Surface 46 Claw Piece 48 Spacing 52 Tooth profile 54 Stop tooth profile 56 Soft member 58 Tangent line 60 Gap 62 Frame member 70 Locking piece

Claims (13)

[Claims] 1. A pipe joint having an arcuate surface provided at a joint portion of various pipes arranged in a pipe is brought close to a support member arranged in the vicinity of the pipe joint, and a clamp member is provided for the support member. A whirl-stop member for a pipe joint, which is sandwiched between the pipe joint and the support member in a state in which the pipe joint is arranged so as to embrace, and which prevents the idle rotation of the pipe joint with respect to the support member. 2. The pipe joint according to claim 1, wherein the detent member has a first abutment surface that abuts on the support member, and a second abutment surface that abuts on the pipe joint side. Non-rotating member. 3. The whirl-stop member for a pipe joint according to claim 1, wherein a protrusion or a claw piece that abuts at least two points on the arc surface of the pipe joint is provided on the second fitting surface side. . 4. The anti-rotation member for a pipe joint according to claim 2, wherein the second contact surface of the anti-rotation member is an arcuate concave surface that comes into close contact with the arcuate surface of the pipe joint. 5. The detent member for a pipe joint according to claim 1, wherein the detent member is formed in a substantially trapezoidal shape in plan view. 6. The second fitting surface of the detent member has a claw piece that comes into line contact with the arc surface of the pipe joint, and the portion of the second fitting surface other than the claw piece is the pipe joint. 6. The detent member for a pipe joint according to claim 2, wherein the detent member is formed so as to be recessed so as not to come into close contact with the circular arc surface. 7. A tooth profile is engraved on the arcuate surface of the pipe joint, and a stop tooth profile that engages with this tooth profile is provided on the second abutment surface of the detent member. Alternatively, the rotation preventing member for a pipe joint according to any one of 5 above. 8. The detent member for a pipe joint according to claim 1, wherein the detent member is a soft member. 9. The anti-rotation member is brought into contact with the support member such that the contact surface of the support member is tangential to the arc surface of the pipe joint, and in this state, the support member and the pipe are in contact with each other. The wire fitting frame member according to claim 1, wherein the wire fitting frame member is arranged in a space on both sides of a tangent line of the arc surface of the fitting so as to abut both of the arc surface of the fitting and the supporting member. Stop member. 10. The anti-rotation member is provided with projecting pieces on both sides of the upper part of the anti-rotation member, and is provided with a locking piece that engages so as to straddle the clamp member. Non-rotating member for pipe joints. 11. A pipe joint provided in a joint portion of various pipes provided with an arcuate surface, a support member arranged in the vicinity of the pipe joint, and a pipe joint held close to the support member. A clamp member that is rotated around to have a clamp member that is in contact with a support member on the opposite side of the pipe joint and that is fixed to the support member between the pipe joint and the support member. A rotation preventing structure for a pipe joint, in which rotation preventing members for the pipe joint for preventing idling of the pipe joint are sandwiched and arranged. 12. A tooth profile is formed on an outer peripheral surface of the pipe joint, and a stop tooth profile that meshes with a tooth profile of the outer peripheral surface of the pipe joint is formed on a surface of the rotation preventing member that is in contact with the pipe joint. The pipe joint detent structure according to claim 11, which is formed. 13. A soft member is provided around the outer peripheral surface of the pipe joint or the contact surface of the anti-rotation member.
The rotation stopping structure for a pipe joint according to any one of 0 to 12.