JP4701073B2 - Structure of slide plate in pipe joint - Google Patents

Description

The present invention relates to a structure of a slide plate in a pipe joint that eliminates spot welding and riveting processes in the assembly process of the pipe joint, thereby improving the productivity of the pipe joint and reducing the cost of parts.

Conventionally, as a first example of this type of pipe joint, there is a technique disclosed in Utility Model Registration No. 3018876 Utility Model Publication shown in FIG. To explain this, the pipe joint 1 includes a sleeve 12 that covers the outer periphery of the pipe, a casing 2 that covers the outer periphery of the sleeve 12, and fastens the sleeve 12 to the outer periphery of the pipe; The grip ring 5 is disposed between the flange 4 provided at the three edges and the sleeve 12, and when the pipe is tightened by the casing 2, the grip ring 5 that bites into the outer periphery of the pipe and fixes the pipe in the pipe joint 1. It consists of a ring fixed inside. The end portions 2a and 2b of the casing 2 arranged to face each other are provided with tongue pieces 6a and 6b extending from the end portions 2a and 2b, respectively. The tongue pieces 6a and 6b are formed in the semicircular arc shape. The bracket 4 is formed by folding back to the outside of the flange 4 and fixing its tip to the outer periphery of the flange 4 to form a part of an arc inscribed in the rod washer 7a.

A rod-shaped washer 7a provided with two holes having an inner diameter slightly larger than the outer diameter of the bolts 9, 9 is provided in the bracket 8 formed between the outer periphery of the tongue piece 6a and one end of the flange 4. In a bracket 8 formed between the outer periphery of the other end of the flange 4 and the tongue piece 6b, a bar nut 7b having a screw hole for screwing with the bolts 9, 9 is supported. The brackets 8 and 8 are provided with openings 10 and 10 through which the bolts 9 and 9 are inserted into the rod-shaped washers 7a and the rod nuts 7b. The bolts 9 and 9 are inserted into the rod washer 7a and the rod nut 7b, and screwed into the rod washer 7a and the rod nut 7b. In this way, the brackets 8 and 8 supporting the rod-shaped washer 7a and the rod nut 7b are crushed by a punch or the like to form an indentation portion, and the inner walls of the brackets 8 and 8 are the rod-shaped washer 7a and rod. The rod washer 7a and the rod nut 7b supported in the brackets 8 and 8 are prevented from being displaced in the brackets 8 and 8 so as to be in pressure contact with the nut 7b.

Further, the tip portions of the bolts 9 and 9 may be formed in a conical shape or a head cone shape that gradually changes in cross section in the tip direction, and a screw hole of a rod nut 7b into which the bolts 9 and 9 are inserted. In the vicinity of the inlet, a counterbore-shaped counterbore for guiding the tip of the bolts 9 and 9 into the screw hole of the bar nut 7b is formed. Further, on the inner peripheral surface of one end of the flange 4 forming the casing 2 or the inner peripheral surface of the casing 2, as shown in FIG. 5, a slide plate 11 that is curved with substantially the same curvature as the inner periphery of the casing 2. One end is fixed by spot welding, rivet parts, or the like. This slide plate 11 covers the end 2a, 2b of the casing 2 from the inner periphery of the casing 2 when the casing 2 is closed. The end is a free end, and is disposed at a position that slides with the inner periphery of the other end of the flange 4 forming the casing 2 as the casing 2 is opened and closed.

Further, flanges 4 projecting in the center direction of the casing 2 are provided at the peripheral edges of the both end openings 3 and 3 of the casing 2, and the slide plate 11 and the protection plate fixed to the inner peripheral surface of the flange 4 are also provided. A similar flange 4 is formed, and the flange 4 that is continuous over the entire inner peripheral edge of the opening is formed even when the end portions 2a and 2b of the casing 2 are separated from each other. The casing 2 may have a configuration in which the flange 4 is connected by the hinge, and the substantially cylindrical casing 2 is formed by facing the end portions 2a and 2b of the single flange 4 formed as shown in this example. In addition, by providing one or a plurality of cutouts on the flanges protruding from the peripheral edges 3 and 3 of the opening 2 of the casing 2, the casing 2 can be configured to be openable and closable between the ends 2a and 2b. it can. A cylindrical sleeve 12 is disposed in the casing 2.

A sleeve 12 is made of an elastic material such as synthetic rubber, and is formed in a cylindrical shape having an outer diameter substantially the same as the inner periphery of the casing 2 described above. The outer periphery of the sleeve 12 is formed flat to ensure good adhesion with the inner peripheral surface of the casing 2. The inner peripheral surface of the sleeve 12 is formed in an uneven shape. The concave-convex shape of the inner peripheral surface of the sleeve 12 undulates at the center thereof, and the sleeve 12 is a tongue that is folded back toward the inner center of the sleeve 12 in the vicinity of the openings at both ends of the sleeve 12. A projecting portion is formed on the inner periphery of the sleeve 12 in a substantially trapezoidal shape in the distal direction of the tongue-shaped portion. Reference numeral 5 denotes a grip ring. The grip ring 5 has an annular shape whose center is inclined in the inward direction of the pipe joint 1, and a plurality of teeth 5a are formed at equal intervals on the inner periphery thereof. Yes. The teeth 5a are formed by making a substantially L-shaped cut from the inner periphery of the annular ring and slightly raising a portion surrounded by the cut.

The grip ring 5 has a C-shape with one end cut out, and an auxiliary plate extending one cut-out end is fixed to the cut-out portion, and the other end of the auxiliary plate is fixed. Is slidably brought into contact with the side surface of the other notch end to form the endless ring. The grip ring 5 formed in this way is inserted between the flange 4 of the casing 2 and the open end of the sleeve 12 arranged in the casing 2. When inserting the grip ring 5, it is preferable to place a ring formed by bending a metal wire or the like in a C shape between the grip ring 5 and the flange 4 of the casing 2. By inserting the ring in this way, play in the casing 2 of the grip ring 5 can be prevented.

Conventionally, as a second example of this type of pipe joint, there is a technique disclosed in Japanese Patent Publication No. 1-54600. To explain this, when the casing as a housing is in its attached state, both ends are supported inside thereof, and a substantially C-shaped cross section housing, that is, a slide plate as a bridging member having substantially the same cross sectional shape as the casing. I have. The slide plate is fixed to the inside of one end by, for example, spot welding, and the casing and the slide plate are made of stainless steel.
Registration No. 3018876 Utility Model Gazette Japanese Patent Publication No. 1-54600

In assembling the pipe joint in the above-mentioned conventional technology, in particular, the process of spot welding or riveting one end of the slide plate described above is not only a long process time but also a work by skilled workers. This is not suitable for mass production. In addition, there is a problem that the maintenance of the facilities is troublesome.
Further, when removing the pipe (pipe) inserted / arranged from the casing from the pipe joint or casing, the free end of the slide plate described above is deformed or distorted in the inner (center) direction of the casing. Further, there is a problem in that it is difficult to remove the slide plate from the pipe joint, and it is not easy to replace the deformed or distorted slide plate.
The problem to be solved by the present invention is to solve the problems described in the background art described above.

The structure of the slide plate in the pipe joint according to the present invention eliminates the need to fix one end of the slide plate to the inner peripheral surface of the casing or the inner peripheral surface of one end of the flange by spot welding or riveting. A plurality of protrusions having a simple configuration on the outer peripheral surface of the substantially arc-shaped slide plate that comes into contact with and engages with the inner peripheral surface of a casing having a substantially C-shaped section in a pipe joint, a substantially V-shaped section, etc. The groove is formed, the spot welding and riveting steps are omitted in the assembly process of the pipe joint, the productivity of the pipe joint is improved, the cost of parts is reduced, and the pipe joint is connected to this. To provide a pipe joint that allows easy removal and replacement of a slide plate even when the slide plate is deformed without deforming or distorting the substantially arc-shaped slide plate when removing a pipe (pipe). For the purpose It is those, next configuration, established from the means.

That is, according to the first aspect of the present invention, a casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tube tightening by the casing A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery, and a bracket that is formed between the outer periphery of one end and the other end of the flange and is integrally disposed with the casing. , A rod washer and a rod nut, which are respectively inserted through the bracket, and a plurality of fastening bolts which are inserted in a direction perpendicular to the rod washer and the rod nut and tighten the casing having a substantially C-shaped cross section. A plurality of ridges are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section. A plurality of transverse grooves having a predetermined length to be engaged are formed on the outer peripheral surface, and a substantially arc-shaped slide plate is movably disposed on the inner peripheral surface of the substantially C-shaped casing. .

According to the invention of claim 2, when the casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tightening of the pipe by the casing, A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery; a bracket formed between the outer periphery of one end and the other end of the flange and disposed integrally with the casing; A rod washer and a rod nut that are respectively inserted through the bracket, and a plurality of fastening bolts that are inserted in a direction perpendicular to the rod washer and the rod nut and tighten the casing having a substantially C-shaped cross section. In the constructed pipe joint, a plurality of lateral grooves having a predetermined length are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section. A plurality of stages of ridges that if formed on the outer peripheral surface, characterized in that has a substantially arc-shaped sliding plate which is movably disposed on the inner peripheral surface of the substantially C-shaped cross section of the casing.

According to the invention described in claim 3, when the casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tightening of the pipe by the casing, A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery; a bracket formed between the outer periphery of one end and the other end of the flange and disposed integrally with the casing; A rod-shaped washer and a rod nut that are respectively inserted through the bracket, and a plurality of tightening bolts that are disposed so as to be inserted perpendicularly to the rod-shaped washer and the rod nut and tighten the casing having a substantially C-shaped cross section. In the constructed pipe joint, a plurality of substantially mountain-shaped ridges are formed on one side and the other side of the inner peripheral surface of the substantially C-shaped cross section of the casing, A plurality of steps of a substantially V-shaped or U-shaped transverse groove having a predetermined length that engages with the elongated protrusion is formed on the outer peripheral surface, and is movably disposed on the inner peripheral surface of the substantially C-shaped casing. It has a substantially arc-shaped slide plate.

According to a fourth aspect of the present invention, in the first, second or third aspect of the invention, the left and right end walls of the plurality of steps and the predetermined length of the lateral groove have the substantially arc-shaped slide plate. It becomes the stopper of.

According to the invention of claim 5, in the invention of claim 1, 2, or 3, the casing having a substantially C-shaped cross section and the curvature of the substantially arc-shaped slide plate are substantially the same. Features.

Since the structure of the slide plate in the pipe joint according to the present invention has the above configuration, the following effects are obtained.

That is, according to the first aspect of the present invention, a casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tube tightening by the casing A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery, and a bracket that is formed between the outer periphery of one end and the other end of the flange and is integrally disposed with the casing. , A rod washer and a rod nut, which are respectively inserted through the bracket, and a plurality of fastening bolts which are inserted in a direction perpendicular to the rod washer and the rod nut and tighten the casing having a substantially C-shaped cross section. A plurality of ridges are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section. A plurality of transverse grooves having a predetermined length to be engaged are formed on the outer peripheral surface, and a substantially arc-shaped slide plate is movably disposed on the inner peripheral surface of the substantially C-shaped casing. The structure of the slide plate in the pipe joint is provided.
Since such a structure is adopted, a plurality of predetermined lateral grooves are formed by forming a plurality of ridges on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section and engaging with the ridges. Is formed on the outer peripheral surface and a movable substantially arc-shaped slide plate is provided, so that the spot welding and riveting steps are omitted in the assembly process of the pipe joint, and the productivity of the pipe joint is improved and the parts are combined. This has the effect of reducing costs. Further, when the pipe (pipe) connected to the pipe joint is removed from the pipe joint, even if the slide plate is deformed without deforming or distorting the substantially arc-shaped slide plate, the removal and replacement of the slide plate is also possible. There is an effect that becomes easy.

According to the invention of claim 2, when the casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tightening of the pipe by the casing, A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery; a bracket formed between the outer periphery of one end and the other end of the flange and disposed integrally with the casing; A rod washer and a rod nut that are respectively inserted through the bracket, and a plurality of fastening bolts that are inserted in a direction perpendicular to the rod washer and the rod nut and tighten the casing having a substantially C-shaped cross section. In the constructed pipe joint, a plurality of lateral grooves having a predetermined length are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section. A plurality of ridges having a predetermined length are formed on the outer peripheral surface, and a substantially arc-shaped slide plate is movably disposed on the inner peripheral surface of the substantially C-shaped casing. The structure of the slide plate in the pipe joint is provided.
Since it has such a configuration, a plurality of lateral grooves formed in a row on one and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section are formed, and a plurality of predetermined length protrusions that engage with the lateral grooves are formed. Since a substantially arc-shaped slide plate that is formed on the outer peripheral surface and is movable is provided, spot welding and riveting steps are omitted in the assembly process of the pipe joint, and the productivity of the pipe joint is improved and the parts cost is reduced. There is an effect of aiming at reduction. Further, when the pipe (pipe) connected to the pipe joint is removed from the pipe joint, even if the slide plate is deformed without deforming or distorting the substantially arc-shaped slide plate, the removal and replacement of the slide plate is also possible. There is an effect that becomes easy.

According to the invention described in claim 3, when the casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, sleeves disposed in the casing, and tightening of the pipe by the casing, A grip ring in which a tube is fixed in the sleeve and a plurality of blades are formed on the inner periphery; a bracket formed between the outer periphery of one end and the other end of the flange and disposed integrally with the casing; A rod washer and a rod nut that are respectively inserted through the bracket, and a plurality of fastening bolts that are inserted in a direction perpendicular to the rod washer and the rod nut and tighten the casing having a substantially C-shaped cross section. In the constructed pipe joint, a plurality of substantially mountain-shaped ridges are formed on one side and the other side of the inner peripheral surface of the substantially C-shaped cross section of the casing, A plurality of steps of a substantially V-shaped or U-shaped transverse groove having a predetermined length that engages with the elongated protrusion is formed on the outer peripheral surface, and is movably disposed on the inner peripheral surface of the substantially C-shaped casing. The present invention provides a structure of a slide plate in a pipe joint characterized by having a substantially arc-shaped slide plate.
Because of such a configuration, a plurality of ridges are formed on one side and the other side of the inner circumferential surface of the casing having a substantially C-shaped cross section. A plurality of predetermined length cross-sectional substantially V-shaped or U-shaped transverse grooves are formed on the outer peripheral surface, and a movable substantially arc-shaped slide plate is provided. There is an effect that the stop process is omitted, the productivity of the pipe joint is improved, and the cost of parts is reduced. Further, when the pipe (pipe) connected to the pipe joint is removed from the pipe joint, even if the slide plate is deformed without deforming or distorting the substantially arc-shaped slide plate, the removal and replacement of the slide plate is also possible. There is an effect that becomes easy.

According to a fourth aspect of the present invention, the left and right end walls of the plurality of steps and the predetermined length of the lateral groove serve as stoppers for the substantially arc-shaped slide plate. Or the structure of the slide plate in the pipe joint of 3 is provided.
With such a configuration, the substantially arc-shaped slide plate can be controlled to rotate within a predetermined range on the inner peripheral surface of the casing having a substantially C-shaped cross section. Even when the pipe diameter is shortened due to deformation or distortion, there is an effect that the pipe (pipe) connected to the pipe joint can be easily removed.

According to a fifth aspect of the present invention, the pipe joint according to the first, second or third aspect, wherein the substantially C-shaped casing and the substantially arcuate slide plate have substantially the same curvature. The structure of the slide plate is provided.
With such a configuration, the substantially arc-shaped slide plate can be slidably rotated on the inner peripheral surface of the casing having a substantially C-shaped cross section, and the casing (pipes) can be quickly tightened and loosened. This has the effect of facilitating the desorption work.

Embodiments of a slide plate structure in a pipe joint according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG.1 and FIG.3 is a side view which shows the structure of the pipe joint which concerns on this invention.
In explaining the structure of the slide plate in the pipe joint according to the present invention, the pipe joint B will be described first. The sleeve for covering the outer periphery of a pipe (not shown) to be inserted and installed in the pipe joint B. 13, a casing 14 having, for example, a substantially C-shaped cross section that covers the outer periphery of the sleeve 13 and fastens the sleeve 13 to the outer periphery of the pipe, and a flange 16 and a sleeve provided at the edges of both ends 15 of the casing 14 13, a grip ring 17 that bites into the outer periphery of the pipe and fixes the pipe in the pipe joint B when the pipe (pipe) is tightened by the casing 14, and a ring that fixes the grip ring 17 in the casing 14 (see FIG. Not shown). The ends 16a and 16b of the flange 16 arranged in opposition to each other are folded back to the outside of the casing 14 and their tips are fixed on the outer periphery of the casing 14 so as to inscribe the rod-shaped nut 18 and the rod-shaped washer 19. A desired number of brackets 20 are formed in pairs.

Further, a rod-shaped washer 19 having a hole having an inner diameter slightly larger than the outer diameter of the tightening bolt 21 is supported in the brackets 20 and 20, and a rod-shaped member having a screw hole to be screwed with the tightening bolt 21. A nut 18 is supported. The brackets 20 and 20 have holes 20a and 20a through which the tightening bolts 21 are inserted into the rod-shaped nuts 18 and the rod-shaped washers 19. The holes 20a and 20a are used for the tightening. The bolt 21 is inserted into the rod-shaped washer 19 and screwed into the rod-shaped nut 18. Thus, the brackets 20 and 20 supported by the rod-shaped nut 18 and the rod-shaped washer 19 crush the outer wall with, for example, a punch or the like to form the indented portions 20b and 20b, and the inner walls of the brackets 20 and 20 are the rod-shaped members. The washer 19 and the rod-shaped nut 18 are pressed against each other to prevent the rod-shaped washer 19 and the rod-shaped nut 18 supported in the brackets 20 and 20 from being displaced in the brackets 20 and 20.

The sleeve 13 is made of an elastic material such as synthetic rubber, and is formed in a cylindrical shape having an outer diameter substantially the same as the inner periphery of the casing 14 described above. The outer periphery of the sleeve 13 is flat to ensure good adhesion with the inner peripheral surface of the casing 14. The inner peripheral surface of the sleeve 13 is formed in an uneven shape, for example. The uneven shape of the inner peripheral surface of the sleeve 13 is undulated in the center portion. Reference numeral 17 denotes a grip ring. The grip ring 17 has an annular shape whose center is inclined in the inward direction of the pipe joint B, and a plurality of blades 17a are formed at equal intervals on the inner periphery thereof. Yes. The blade 17a is formed by making a cut 17b in a substantially L shape or V shape from the inner periphery of the annular grip ring 17, and slightly raising a portion surrounded by the cut 17b. The blade 17a has a cutting edge on one end surface of the upper surface thereof. The grip ring 17 formed in this way is inserted between the flange 16 of the casing 14 and the open end of the sleeve 13 disposed in the casing 14.

In this case, as shown in FIG. 1, the inner circumferential surface of the casing 14 having the substantially C-shaped cross section has, for example, a plurality of steps on one side and the other side of the folded portion D on the outer side of the casing 14, that is, 2 Step ridges 22 are formed. These ridges 22 are substantially mountain-shaped, and are formed from the outer peripheral surface of the casing 14 having a substantially C-shaped cross section by pressing or projecting with a die. Further, the protrusions 22 may be formed by forming a protrusion on the inner peripheral surface of the casing 14 having a substantially C-shaped cross section by welding means or the like. Then, the substantially arc-shaped slide plate 23 shown in FIG. 2 is inserted / inserted so as to close the upper opening E shown in FIG. Deploy. The slide plate 23 is configured to be in contact with the inner peripheral surface of the casing 14 having a substantially C-shaped cross section and to be rotatable, and has a relatively long predetermined length L on the outer peripheral surface, that is, a two-step cross section approximately V. The letter-shaped or U-shaped lateral grooves 23a are formed by pressing or molding using, for example, pressing means from the outer peripheral surface. The substantially V-shaped or U-shaped transverse grooves 23a are movably engaged with the protrusions 22. The transverse grooves 23a... Having a substantially V-shaped or U-shaped cross section have a function of compensating for the lack of strength because the slide plate 23 is thin.

In addition, a substantially arc-shaped slide plate 23 that is curved with substantially the same curvature as the inner periphery of the casing 14 is slidably disposed on a part of the outer periphery of the sleeve 13 attached to the inner periphery of the casing 14. The slide plate 23 is disposed at a position that slides with the inner periphery of the flange 16 that forms the casing 14 as the casing 14 is opened and closed. Further, flanges 16 projecting toward the center of the casing 14 are provided at both ends of the casing 14, and a similar flange 23 b is formed on the slide plate 23 fixed to the inner peripheral surface of the flange 16. is doing. A cylindrical sleeve 13 is disposed in the casing 14.

Next, the operation | movement etc. based on embodiment of the structure of the slide plate in the pipe joint which concerns on this invention are demonstrated.

After the assembly of the pipe joint B described above is completed, for example, one and the other pipes (pipes) are inserted and installed from both ends 15 and 15 of the casing 14 in the pipe joint B. Then, for example, the bolt heads 21a and 21a of the two fastening bolts 21 and 21 are rotated by a screwdriver tool (not shown) or the like, and the fastening bolts 21 and 21 are laterally moved into the rod-shaped nut 18 and the rod-shaped washer 19. Enter in the insertion direction. At this time, the fastening bolts 21 and 21 are screwed with the rod-shaped nut 18. Thus, the rod-shaped washer 19 and the rod-shaped nut 18 operate so as to approach each other in accordance with the screwing operation of the tightening bolts 21 and 21, and pull the brackets 20 and 20 disposed opposite to each other. To do. Thereby, it operates so as to close the upper opening E of the casing 14 having a substantially C-shaped section, and the tube diameter of the casing 14 having a substantially C-shaped section is reduced. At this time, the ridges 22, 22 formed on the inner peripheral surface of the casing 14 on the one side and the other side, for example, in two stages, are guided to the left side of the slide plate 23, for example, in the two-stage horizontal groove 23 a. -Moves in the right direction, that is, in the direction of reducing the tube diameter of the casing 14 having a substantially C-shaped cross section. If the tube diameter of the casing 14 having a substantially C-shaped cross section is reduced, the cutting edge of the blade 17a of the grip ring 17 bites into the outer peripheral surface of the pipe (pipe) in which the blade is inserted and installed, and the pipe (pipe) is The pipe joint B is firmly connected. The lateral grooves 23a ... serve as a reinforcement and guide.

When the pipe joint B is opened, that is, when having the upper opening E of the casing 14 having a substantially C-shaped cross section as shown in FIG. 1, the two-stage ridges 22, 22 on the one side and the other side The ridges 22 and 22 are located in the left and right end walls 23b and 23c of the two-stage lateral grooves 23a and 23a of the slide plate 23. The left and right end walls 23b and 23c function as stoppers and restrict the movement of the protrusions 22 and 22. This sets the degree of the upper opening E of the casing 14 having a substantially C-shaped cross section, opens the pipe joint B, and sets the opening required for removing the pipe (pipe) to be inserted and installed in the pipe joint B. Control. Therefore, when it is desired to increase the degree of opening of the pipe joint B, the length of the predetermined length L of the lateral grooves 23a and 23a formed on the outer peripheral surface of the slide plate 23 is preferably increased.

For example, when one and the other pipes (pipes) are removed from both ends 15 and 15 of the casing 14 in the pipe joint B, the bolt heads 21a and 21a of the two fastening bolts 21 and 21 are screwed. (Not shown) or the like, the clamping bolts 21 and 21 are pulled out of the bar nut 18 and the bar washer 19 by rotating in the reverse direction to the above, and the casing 14 having the substantially C-shaped cross section is opened as shown in FIG. The piping (pipe) can be removed.

Next, an example of the structure of the slide plate in the pipe joint according to the present invention will be described.

This embodiment is a modification of the above-described embodiment although not shown in the drawings. The inner peripheral surface of the casing 14 having the substantially C-shaped cross section described above is arranged on one side and the other side of the folded portion D outside the casing 14. A lateral groove having a plurality of steps, that is, two steps is formed on the side. The lateral groove is formed by pressing or molding a relatively long V-shaped or U-shaped lateral groove having a predetermined length L, for example, by pressing means from the outer peripheral surface. A slide plate 23 is provided. The slide plate 23 is configured to be in contact with the inner peripheral surface of the casing 14 having a substantially C-shaped cross section and to be rotatable. The slide plate 23 is movably engaged with the lateral groove and is disposed on the outer peripheral surface. For example, a plurality of substantially mountain-shaped steps, that is, two-step ridges are formed. The substantially mountain-shaped protrusions are produced by pressing or molding using a pressing means or the like from the inner peripheral surface of the slide plate 23.

The operation of the embodiment related to the structure of the slide plate 23 and the casing 14 having a substantially C-shaped cross section, the other configuration related to the pipe joint B, and the like are the same as those in the configuration example of the above-described embodiment. Is omitted.

It is a perspective view which shows the structural example of the cross-sectional substantially C-shaped casing applied to the structure of the pipe joint which concerns on this invention. It is a perspective view of the principal part showing the example of composition of the slide board built in the casing of the section of the shape of an approximately C character applied to the pipe joint concerning the present invention, and this casing. It is a side view which shows embodiment in the pipe joint which concerns on this invention. It is sectional drawing seen from the arrow AA line direction of FIG. It is a side view of the principal part which shows the structural example of the pipe joint in a prior art. It is the whole side view which shows the structural example of the pipe joint in a prior art.

Explanation of symbols

13 Sleeve 14 Casing with substantially C-shaped cross section 15 End opening 16 of casing with substantially C-shaped cross section Flange 16a End of flange 16b End of flange 17 Grip ring 17a Grip ring blade 17b Grip ring cut 18 Rod nut 19 Rod washer 20 Bracket 20a Bracket opening 20b Bracket indentation 21 Clamping bolt 21a Clamping bolt head 22 Casing protrusion 23 having a substantially C-shaped section Slide plate 23a Slide plate lateral groove 23b Left end of slide plate lateral groove Wall 23c Right end wall B of the lateral groove of the slide plate B Pipe joint D Folding portion E outward of the casing Upper opening L of the casing having a substantially C-shaped cross section Predetermined length of the lateral groove

Claims (5)

A casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, a sleeve disposed in the casing, and when the pipe is clamped by the casing, the pipe is fixed in the sleeve A grip ring formed with a plurality of blades on the circumference, a bracket formed between the outer circumferences of one end and the other end of the flange and disposed integrally with the casing, and inserted into the bracket. In a pipe joint composed of a rod washer and a rod nut, and a plurality of fastening bolts that are arranged so as to pass through the rod washer and the rod nut in a vertical direction and tighten the casing having a substantially C-shaped cross section. A plurality of stepped ridges are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section, and a plurality of stepped lateral grooves engaging with the ridges are formed on the outer peripheral surface. Formed, the structure of in the slide plate to the pipe joint being characterized in that has a substantially arc-shaped sliding plate which is movably disposed on the inner peripheral surface of the substantially C-shaped cross section of the casing. A casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, a sleeve disposed in the casing, and when the pipe is clamped by the casing, the pipe is fixed in the sleeve A grip ring formed with a plurality of blades on the circumference, a bracket formed between the outer circumferences of one end and the other end of the flange and disposed integrally with the casing, and inserted into the bracket. In a pipe joint composed of a rod washer and a rod nut, and a plurality of fastening bolts that are arranged so as to pass through the rod washer and the rod nut in a vertical direction and tighten the casing having a substantially C-shaped cross section. A plurality of stepped lateral grooves having a predetermined length are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section. Formed, the structure of in the slide plate to the pipe joint being characterized in that has a substantially arc-shaped sliding plate which is movably disposed on the inner peripheral surface of the substantially C-shaped cross section of the casing. A casing having a substantially C-shaped cross section, flanges provided at both opening edges of the casing, a sleeve disposed in the casing, and when the pipe is clamped by the casing, the pipe is fixed in the sleeve A grip ring formed with a plurality of blades on the circumference, a bracket formed between the outer circumferences of one end and the other end of the flange and disposed integrally with the casing, and inserted into the bracket. In a pipe joint composed of a rod washer and a rod nut, and a plurality of fastening bolts that are arranged so as to pass through the rod washer and the rod nut in a vertical direction and tighten the casing having a substantially C-shaped cross section. A plurality of substantially mountain-shaped ridges are formed on one side and the other side of the inner peripheral surface of the casing having a substantially C-shaped cross section, and a plurality of tiers engaging with the substantially mountain-shaped ridges are formed. A transverse groove having a constant-length substantially V-shaped or U-shaped was formed on the outer peripheral surface, and a substantially arc-shaped slide plate movably disposed on the inner peripheral surface of the substantially C-shaped cross-section of the casing was provided. The structure of a slide plate in a pipe joint characterized by 4. A slide in a pipe joint according to claim 1, wherein left and right end walls in the plurality of steps and a predetermined length of lateral groove serve as stoppers for the substantially arc-shaped slide plate. The structure of the board. 4. The structure of a slide plate in a pipe joint according to claim 1, wherein the substantially C-shaped casing and the substantially arc-shaped slide plate have substantially the same curvature.

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