JP5457242B2 - Pipe connection device - Google Patents

Description

  The present invention relates to a connecting device that connects pipe materials or connects a shaft body other than a pipe material to a pipe material, and more particularly, to a connecting device that can firmly connect pipe materials without welding or screwing.

  Structures in which pipes are connected to each other are used in various fields such as containers for transporting automobile parts, other transport products, packaging members, building base materials, and assembly furniture.

  Generally, the structure for connecting the pipes is generally a screwing structure as described in Patent Document 1 below, or a structure for welding metal pipes. However, the connection structure by screwing can connect pipe materials only at the same location, and cannot move a connection location freely. On the other hand, although the connection structure by welding can set a connection place comparatively freely, it cannot be decomposed | disassembled easily but it was difficult to decompose | disassemble and reuse in the transportation field | area.

  In the structural material connecting device described in Patent Document 2 below, structural materials having T grooves on the surface are connected by a connecting piece. Engaging pieces are integrally provided on the connecting pieces, and the structural members are connected by fitting the engaging pieces into the T-grooves. However, this connecting device can be applied only to a special structural material having a T-groove, and cannot be adapted to a connecting structure of ordinary pipe materials having a square or round cross section.

  In Patent Document 3 and Patent Document 4 below, a fastening member or a locking member formed of an elastic body that enters the inside of the pipe material is used. When the bolt that penetrates the tightening member or the locking member is tightened, the length of the tightening member or the locking member contracts and expands toward the outer peripheral side, and the pipe material is held from the inside. However, this connecting device requires an operation of inserting a tightening member or a locking member into the tube material and tightening the bolt from the end side of the tube material. Therefore, as described in Patent Document 3 and Patent Document 4, it can be used as a connector that joins the end portions of the pipe materials, but it cannot be used as a connecting portion that connects the pipe materials in a T-shape.

JP 2005-36840 A JP 2003-13919 A Japanese Patent Laid-Open No. 5-280514 JP-T-2005-517130

  The present invention solves the above-described conventional problems, and provides a pipe connecting device that can freely select a connection place between a pipe and a shaft, and can firmly connect the pipe and the shaft. It is aimed.

  It is another object of the present invention to provide a pipe connecting device that can vertically connect one pipe or an end of a plurality of pipes to an intermediate portion of a shaft.

The pipe connection device of the present invention includes a holding frame portion attached to an outer periphery of a shaft body, a mechanism support portion fixed to the holding frame portion, an elastic body support portion extending from the mechanism support portion, An elastic holding body supported by the elastic body supporting portion, and a compression member that extends from the mechanism supporting portion to the end of the elastic holding body through the inside of the elastic supporting portion,
The mechanism support part is provided with a compression mechanism that pulls the compression member and compresses the elastic holding body, and the compression mechanism can be operated from the outside of the mechanism support part. tubing to be attached to part is than also Ru held from the inside by compressed the elastic holding member.

  The pipe connecting device of the present invention has a holding frame portion mounted on a shaft body, a mechanism support portion is fixed to the holding frame portion, and an elastic holding body is contracted by operating a compression mechanism provided on the mechanism support portion. ing. Therefore, a so-called T-shaped connection in which the end portion of the pipe material is vertically connected to the middle of the shaft body is possible. The shaft body may be a pipe material or a solid shaft. When the shaft body is a pipe material, it is also possible to connect the pipe material with a pipe material having a different cross-sectional shape or a different size.

In the above configuration, the compression mechanism may include a wedge member that pulls in the compression member, and a fixing member that fixes the wedge member in a state where the compression member is retracted.

As a result , the holding frame portion is attached to the shaft body, and after fixing the mechanism support portion to the holding frame portion, the elastic holding body is moved by moving the fixing member constituted by a bolt or the like from the outside of the mechanism support portion. It becomes possible to compress and hold a pipe material.

The present invention further relates to the holding frame part and the mechanism supporting portion is what is removable via the detaching mechanism.

Thereby, since a holding frame part can be mounted | worn in the free location of a shaft, the connection location of a shaft and a pipe material can be selected now freely.

In the above configuration, the attachment / detachment mechanism is provided with a retaining protrusion having a plurality of cylindrical portions and a retaining flange portion extending in the radial direction of the cylindrical portion from the retaining protrusion, The mechanism support part is formed with a fitting hole that fits into the cylindrical part of the latching protrusion and a notch part having an opening dimension wider than the fitting hole.

  Alternatively, in the attachment / detachment mechanism, a male screw portion is provided in the holding frame portion, and a female screw portion to be screwed to the male screw portion is provided in the mechanism support portion.

  In the present invention, a separation part is formed in a part of the holding frame part, the attachment / detachment mechanism is provided across the separation part, and when the mechanism support part is attached via the attachment / detachment mechanism, The holding frame portion is fastened to the shaft body by the attachment force.

  When the holding frame portion is fastened to the shaft body with an attaching force when the mechanism support portion is attached via the attachment / detachment mechanism, a special mechanism is not required for fixing the holding frame to the shaft body.

  In the present invention, it is preferable that the mechanism support portion is provided with a rotation stop member that fits into the hole of the holding frame portion.

  In the present invention, the elastic body support portion has a taper portion whose cross-sectional area decreases as it moves away from the mechanism support portion, and a metal member that presses the tube material when compressed is compressed on the elastic support body. It can be configured as provided.

  Furthermore, this invention can be comprised as an elastic material and the metal member press-contacted to the outer surface of the said shaft body are provided inside the said holding frame part.

  As described above, when an elastic material and a metal member are used in combination, the tube material can be firmly held from the inside by the elastic holding body, and the holding frame body can be firmly fixed to the shaft body in a state where it is difficult to be displaced. Become.

  The pipe connecting device of the present invention can firmly fix the end of the pipe in a vertical direction to the middle of the pipe or the solid shaft. Moreover, the connection position of the pipe material can be freely selected.

  Therefore, structures of various shapes can be assembled in a short time. In addition, since it can be easily disassembled, it can be reused when used as a transportation product or a packaging member.

The perspective view which shows the structure which connects two pipe materials using the connecting device of embodiment of this invention, The perspective view which shows a holding frame part and the attachment / detachment mechanism provided in this, The perspective view which shows the attachment / detachment mechanism provided in the connection member and its mechanism support part, (A) is an exploded perspective view of the coupling device, (B) is an enlarged perspective view showing a metal member mounted inside the elastic holding body, Longitudinal sectional view of the coupling device, (A) (B) is the perspective view which shows the structure of the rotation stop mechanism which has a rotation stop member according to operation | movement, (A) is a perspective view of the holding frame part provided with the attachment / detachment mechanism of the second embodiment, (B) is a front view showing a state in which the holding frame part is attached to the shaft body, (A) (B) is the side view which shows the attachment / detachment apparatus of 2nd Embodiment according to operation | movement,

  In FIG. 1, the connecting device 10 according to the embodiment of the present invention is attached to the middle part of the first tube 1 that is a shaft body, and the end 2 a of the second tube 2 is connected by the connecting device 10. And the edge part 3a of the 3rd pipe material 3 is connected. The first tube material 1, the second tube material 2, and the third tube material 3 are square tube materials having a square cross-sectional shape, and have the same dimensions. The 1st pipe material 1, the 2nd pipe material 2, and the 3rd pipe material 3 are mutually connected at right angle.

  Each of the pipes 1, 2, and 3 is made of metal, and is used, for example, as a skeleton of a container when packing relatively large parts, or as a spacer positioned between the parts inside the container. It can also be used as a skeleton such as a shelf installed in a factory. Alternatively, pipes made of synthetic resin can be used for any or all of the pipes 1, 2, and 3 and can be used as shelves on which relatively lightweight articles are placed, as well as simple furniture. You can also

  The connecting device 10 is provided with a holding frame portion 11 that is attached to the outer periphery of the first tube 1 that is a shaft body. The holding frame portion 11 is formed of a metal plate or a synthetic resin material.

  As shown in FIG. 2, the holding frame portion 11 has a back plate portion 12, side plate portions 13 and 14, and front plate portions 15a and 15b. The front plate portion 15 a and the front plate portion 15 b are separated from each other by the separation portion 16. The back plate 12 and the side plate 13 are bent through an obtuse angle that is slightly larger than a right angle, and the back plate 12 and the side plate 14 are also bent through an obtuse angle that is slightly larger than a right angle. The side plate portion 13 and the front plate portion 15a are bent through an obtuse angle that is a right angle or slightly larger than a right angle, and the side plate portion 14 and the front plate portion 15b are also bent through an obtuse angle that is slightly greater than a right angle or a right angle. And it is elastically deformable so that the obtuse angle becomes a right angle.

  The elastic material 17 is attached from the inner surface of the side plate portion 13 to the inner surface of the front plate portion 15a, and the elastic material 17 is attached from the inner surface of the side plate portion 14 to the inner surface of the front plate portion 15b. The elastic members 17, 17 are formed of a synthetic resin material that can be elastically contracted, such as urethane resin. A metal member 18 is embedded in the elastic member 17 inside the side plate portion 13. The metal member 18 is formed by bending a metal plate into a U-shape, and its edge portions 18 a and 18 a are exposed on the inner surface 17 a of the elastic material 17. Similarly, a metal member 18 is embedded in the elastic member 17 on the inner side of the side plate portion 14, and its edge portions 18 a and 18 a are exposed on the inner surface 17 a of the elastic member 17.

  The connecting member 30 is detachably attached to the outer surface of the front plate portions 15 a, 15 a of the holding frame portion 11 and the outer surface of the side plate portion 13 by the attachment / detachment mechanism 20.

  The attachment / detachment mechanism 20 has latching protrusions 21 and 21 that protrude integrally from the front plate portion 15 a and the front plate portion 15 b of the holding frame portion 11. Each latching protrusion 21 has a cylindrical portion 22, and further has a latching flange portion 23 that projects outward in the radial direction of the cylindrical portion 22. One latching projection 21 is formed integrally with the front plate portion 15a, and the other latching projection 21 is formed integrally with the front plate portion 15b. As shown in FIG. 2, since the front plate portion 15a and the front plate portion 15b are separated by the separation portion 16, the pair of latching protrusions 21 and 21 are separated from each other.

  The connecting member 30 shown in FIG. 3 is assembled from a metal material by sheet metal processing and welding. Or the whole is formed with the synthetic resin material. As the synthetic resin material, polycarbonate resin or ABS resin having high strength is used. The surface of the back plate portion 32 of the mechanism support portion 31 is a flat surface. The back plate portion 32 is formed with a fitting hole 24 constituting the attaching / detaching mechanism 20 and notches 25 and 25 having opening sizes wider than the fitting hole 24 at two locations on the outer periphery of the fitting hole 24. Has been. The curvature of the inner edge of the fitting hole 24 substantially matches the curvature of the outer peripheral surface of the cylindrical portion 22 of the latching protrusion 21 provided in the holding frame portion 11. The notch 25 is opened to a size that allows the hook flange 23 to pass therethrough.

  The holding frame portion 11 shown in FIG. 2 is inserted through the outer peripheral surface of the first tube material 1, and the holding frame portion 11 is arranged at an arbitrary position of the first tube material 1. The connecting member 30 is rotated 90 degrees from the posture shown in FIG. 3 so that the upper surface 33 of the mechanism support portion 31 faces sideways, and the back plate portion 32 of the mechanism support portion 31 is moved to the front plate portion of the holding frame portion 11. Installed at 15a and 15a. At this time, the latching flange portions 23, 23 constituting one side of the attaching / detaching mechanism 20 are intervened in the notches 25, 25 constituting the other side, and the connecting member 30 is rotated 90 degrees. The posture is returned so that the upper surface 33 faces upward. By this rotation, as shown in FIG. 5, the back plate portion 32 of the connecting member 30 intervenes in the gap between the front plate portions 15a and 15a and the latching flange portions 23 and 23, and the fitting hole 24 is It fits on the outer peripheral surface of the cylindrical portion 22 of the latching protrusion 21.

  By the force of attaching the connecting member 30 by the attaching / detaching mechanism 20, the front plate portions 15a, 15b of the holding frame portion 11 approach each other and the side plate portions 13, 14 approach each other, and the back plate portion 12, the side plate portions 13, 14 and Are substantially perpendicular, and the side plate portions 13 and 14 and the front plate portions 15a and 15b are substantially perpendicular. Then, the holding frame portion 11 is mounted so as to be fastened to the outer peripheral portion of the first tube material 1 via the elastic members 17 and 17.

  At this time, the elastic members 17, 17 are contracted and deformed and pressed against the surface of the first tube 1, and the holding frame portion 11 is caused by frictional resistance between the surface of the first tube 1 and the elastic members 17, 17. However, it is firmly fixed to the first tube 1 so as not to move easily in the axial direction. Further, the edge portions 18 a and 18 a of the metal members 18 and 18 embedded in the elastic members 17 and 17 are pressed so as to be engaged with the surface of the first tube material 1, and the holding frame portion 11 and the first tube material 1 are The fixing strength of is increased.

  As shown in FIG. 2, a pair of latching protrusions 21 constituting the attachment / detachment mechanism 20 are also provided on the outer surface of the side plate portion 13 of the holding frame portion 11. And the connection member 30 shown in FIG. 3 is attached to the outer surface of the side-plate part 13 so that attachment or detachment is possible.

  It should be noted that the attachment / detachment mechanism 20 is also provided on the outer surface of the other side plate portion 14 and the outer surface of the back plate portion 12 of the holding frame portion 11 so that the connecting member 30 can be detachably attached.

  As shown in FIGS. 3 and 6, a rotation stop mechanism 26 is provided on the mechanism support portion 31 of the connecting member 30. A switching hole 34 is formed through the upper surface 33 of the mechanism support portion 31. The switching hole 34 has a forward portion 34a and a restricting portion 34b continuously formed in a bowl shape. A hole 32 a is opened in the back plate portion 32 of the mechanism support portion 31. The anti-rotation mechanism 26 is provided with an anti-rotation member 27 protruding from the hole 32 a inside the mechanism support portion 31. The rotation stop member 27 is a metal pin, and is supported by a thrust support portion provided inside the mechanism support portion 31 so as to be movable back and forth in the axial direction. A compression coil spring 28 is mounted on the outer periphery of the rotation stop member 27, and the rotation stop member 27 is biased in a direction protruding from the hole 32 a by the elastic force of the compression coil spring 28.

  An operation portion 29 is fixed to the rotation stop member 27, and the operation portion 29 is located inside the switching hole 34. When the connecting member 30 is separated from the holding frame portion 11, as shown in FIG. 6, the rotation preventing member 27 is retracted into the hole 32a, and the operation portion 29 is hooked on the restricting portion 34b. As shown in FIGS. 1 and 5, after the mechanism support portion 31 is mounted on the holding frame portion 11, when the operation portion 29 is removed from the restriction portion 34 b and moved to the advance portion 34 a, the rotation prevention member 27 is compressed. The spring 28 protrudes from the hole 32a due to the elastic force. As shown in FIG. 2, the positioning hole 19 is opened in the holding frame portion 11, and the rotation stopper member 27 is fitted in the positioning hole 19. As a result, as shown in FIGS. 1 and 5, the connection member 30 is prevented from rotating carelessly from the holding frame portion 11 because the rotation of the connection member 30 is restricted with the upper surface 33 of the mechanism support portion 31 facing upward. Can be prevented.

  As shown in FIGS. 3, 4 </ b> A, and 5, the connecting member 30 is provided with an elastic body support portion 35 that extends forward from the mechanism support portion 31. The elastic body support portion 35 is made of metal, and is similarly fixed to the metal mechanism support portion 31 by welding or screwing means. Alternatively, the elastic body support portion 35 and the mechanism support portion 31 may be integrally formed of a synthetic resin material.

  A base end portion on the mechanism support portion 31 side of the elastic body support portion 35 is a fitting portion 35a. The outer surface of the fitting portion 35a is substantially the same as the shape of the inner surface of the second tube material 2, and as shown in FIG. 5, the end portion 2a of the second tube material 2 is a large gap on the outer surface of the fitting portion 35a. It is installed without leaving a gap.

  The elastic body support part 35 has a taper part 35b continuous with the fitting part 35a. The taper portion 35b has a quadrangular cross section, and has a shape in which the cross-sectional area gradually decreases as the distance from the mechanism support portion 31 increases.

  As shown in FIGS. 1, 4 </ b> A, and 5, an elastic holding body 36 is attached to the outer periphery of the elastic body support portion 35. The elastic holding body 36 is formed of a synthetic rubber material such as urethane resin and has a cubic shape. A mounting hole 36 a that opens toward the mechanism support portion 31 is formed in the elastic holder 36. The mounting hole 36 a is a tapered hole whose inner surface follows the outer surface of the tapered portion 35 b of the elastic body support portion 35. A mounting hole 36a is mounted on the outer periphery of the tapered portion 35b.

  As shown in FIGS. 4 and 5, a pair of metal members 37 are embedded in the elastic holder 36. As shown in FIG. 4B, the metal member 37 is formed by bending a metal plate. The metal member 37 has a sliding plate portion 37a and bent plate portions 37b and 37c bent from the front and rear edge portions of the sliding plate portion 37a. The sliding plate portion 37 a is exposed in the mounting hole 36 a of the elastic holding body 36. The leading edge portions 37d and 37e of the bent plate portions 37b and 37c are exposed on the outer surface of the elastic holder 36. As shown in FIG. 4B, the shape of the tip edge portion is such that the tip has a sharp blade like the tip edge portion 37d, or the tip has a zigzag tooth like the tip edge portion 37e. It is preferable to make it easy to bite into the inner surface of the tube material 2.

  As shown in FIGS. 4A and 5, a pressing plate 38 is installed at the tip of the elastic holder 36. The pressing plate 38 is formed of a metal plate, and a rectangular hole 38a is opened at the center.

  As shown in FIG. 5, a compression mechanism 40 is provided inside the mechanism support portion 31 of the connecting member 30. The connecting member 30 is provided with a compression member 41 penetrating the mechanism support portion 31, the elastic body support portion 35, and the elastic holding body 36. The compression member 41 is a shaft member made of metal and having a rectangular cross section. The compression member 41 is inserted into a sliding hole 31 a that opens to the front of the mechanism support portion 31, sliding holes 35 c and 35 d that open to the front and rear of the elastic body support portion 35, and a center hole 36 b of the elastic holder 36. Yes. Further, the compression member 41 is inserted into the hole 38 a of the pressing plate 38, and the distal end portion 41 a of the compression member 41 is fixed to a fixing member 39 installed outside the pressing plate 38.

  Inside the mechanism support portion 31, a drawing protrusion 42 is fixed to the base portion of the compression member 41. The compression mechanism 40 has a wedge member 43. The wedge member 43 is supported so as to be able to move up and down without rotating inside the mechanism support portion 31, and the wedge member 43 can be advanced and retracted in a direction orthogonal to the pulling direction of the compression member 41.

  A bolt 44 as a fixing member is rotatably connected to the upper end of the wedge member 43. A nut 46 is fixed to the upper end of the mechanism support portion 31, and the bolt 44 is screwed to the nut 46. Or the internal thread part may be carved in the inside of the mechanism support part 31, and the volt | bolt 44 may be screwed by the said internal thread part.

  As shown in FIGS. 1 and 5, in the state where the connecting member 30 is fixed to the holding frame portion 11 via the attaching / detaching mechanism 20 and the rotation of the connecting member 30 is stopped by the rotation stopping mechanism 26, the second The tube material 2 can be attached to the connecting member 30.

  As shown in FIG. 5, when the bolt 44 that is a fixing member is raised and the wedge member 43 is raised, no pulling force acts on the compression member 41, so that the compression member is compressed by the elastic restoring force of the elastic holder 36. 41 has moved to the right in FIG. In addition, when the 2nd pipe material 2 is not mounted | worn, the compression member 41 may be urged | biased in the illustration right direction with the force of a spring so that the compression member 41 may be moved positively in the illustration right direction. .

  The end portion 2a of the second pipe member 2 is attached to the outer periphery of the connecting member 30, and the tip portion of the pipe member 2 is fitted to the outer periphery of the fitting portion 35a at the base end of the elastic body support portion 35. The tip is brought into close contact with the mechanism support portion 31. When the bolt 44 which is a fixing member of the compression mechanism 40 is tightened and the wedge member 43 is lowered, the drawing protrusion 42 is drawn to the left side of FIG. 5 by the wedge inclined portion 43a. When the compression member 41 is pulled, the pressing plate 38 moves leftward together with the compression member 41, and the elastic holding body 36 is compressed by the pressing plate 38. Since the tapered portion 35b of the elastic body supporting portion 35 and the tapered mounting hole 36a of the elastic holding body 36 are fitted, the elastic holding body 36 expands toward the outer periphery as it is compressed. And the 2nd pipe material 2 is hold | maintained with the elastic holding body 36 from the inner side.

  As shown in FIGS. 4 and 5, when the metal members 37, 37 are embedded in the elastic holding body 36, the sliding plate portion 37 a of the metal members 37, 37 is moved when the elastic holding body 36 is compressed. Then, the outer surface of the tapered portion 35 b of the elastic body support portion 35 slides in the left direction in the figure, and the leading edge portions 37 d and 37 e of the metal members 37 and 37 are pressed against the inner surface of the tube material 2. Since the blades are formed so that the front edge portions 37d and 37e of the metal members 37 and 37 can be easily bitten into the inner surface of the pipe material 2, the pipe material 2 is firmly fixed by this biting.

  In particular, as shown in FIG. 5, when the leading edge portions 37d and 37e of the metal members 37 and 37 extend obliquely to the left in the drawing so as to face the insertion direction of the second pipe member 2, the leading edge portions 37d and 37d 37e becomes easy to bite into the inner surface of the tube material 2, and the effect of preventing the tube material 2 from coming off can be further enhanced.

  As shown in FIG. 5, when the bolt 44 is tightened to the maximum extent, the pull-in protrusion 42 is in contact with the wedge inclined portion 43 a of the wedge member 43. Since the urging force in the right direction in the figure is constantly acting on the compression member 41 by the elastic restoring force of the elastic holding body 36, the wedge member 43 is pushed upward by this urging force, and the bolt 44 and the nut 46 are loosened. Is prevented.

  The end portion 3a of the third pipe 3 shown in FIG. 1 is also connected to the connecting member 30 in the same manner. The second tubular material 2 and the third tubular material 3 can be fixed to the middle part of the first tubular material 1 in a T-shape, and the mounting position of the holding frame 11 is changed, so that the second tubular material 2 and the third tubular material 3 The pipe 3 can be fixed at an arbitrary position of the first pipe 1.

  Moreover, if the latching protrusion part 21 which comprises the attachment / detachment mechanism 20 is provided in the several places of the outer surface of the holding frame part 11, the number of the pipe materials to connect can be set freely. For example, it is possible to connect both the first tube material 1 and the second tube material 2, further connect the third tube material 3, or connect only the first tube material 1. The structure using can be assembled freely.

  Moreover, the 1st pipe material 1 can also be made into a solid prism. Moreover, the 2nd pipe material 2 and the 3rd pipe material 3 can be made into the prism of a center axis | shaft, and only the edge parts 2a and 3a which are a connection part can also be made into a cylindrical shape. It is also possible to use a tube having a circular cross section.

  Since the connection strength between the pipes can be increased, the structure of the pipes can be used as a packing member such as a container. Further, after use, the bolts 44 can be loosened to separate the pipe materials, so that the pipe materials can be reused, and the holding frame portion 11 and the connecting member 30 can also be reused.

  In the above-described embodiment, the holding frame 11 can be firmly fixed to the tube 1 by tightening the first tube 1 with only the elastic member 17 without providing the metal member 18 in the holding frame 11. . Similarly, it is possible to adopt a structure in which the metal members 37 are not provided inside the elastic holder 36.

  The holding frame portion 111 of the second embodiment shown in FIG. 7A includes a back plate portion 12, side plate portions 13 and 14, and front plate portions 15a and 15b in the same manner as the holding frame portion 11 shown in FIG. The elastic material 17 is provided inside.

  Male screw portions 121 constituting the attaching / detaching mechanism 120 are provided on the side plate portions 13 and 14 and the front plate portions 15a and 15b of the holding frame portion 111. The male screw portion 121 attached to the front plate portions 15a and 15b is separated, and half of the male screw portion 121 is fixed to the front plate portions 15a and 15b, respectively. The male screw portion 121 is a taper screw whose pitch circle is slightly reduced as the distance from the holding frame portion 111 increases. An internal thread portion is provided on the back plate portion 32 of the mechanism support portion 31 of the connecting member 30 attached to the holding frame portion 111.

  As shown in FIG. 7B, the holding frame portion 111 is attached to the first tube material 1, and the male screw portion 121 provided on the front plate portions 15a and 15b is provided on the mechanism support portion 31 of the connecting member 30. When the female screw part is fitted and tightened, the holding frame part 111 is fastened to the first pipe member 1 via the elastic member 17 and is firmly fixed to the first pipe member 1. Also in this case, the holding frame portion 111 can be firmly fixed to the first pipe member 1 by embedding the metal member 18 in the elastic member 17. In addition, a plurality of positioning holes 19 are formed in the holding frame portion 111, and the rotation stopping member 27 is fitted into the positioning holes 19 when the connecting member 30 assumes a desired posture.

  In the compression mechanism 140 of the second embodiment shown in FIG. 8, a wedge member 143 is supported inside the mechanism support portion 31 so as to be able to advance and retract in the vertical direction. The wedge member 143 has a wedge inclined portion 143a and a restricting portion 143b below the wedge inclined portion 143a. Outside the mechanism support portion 31, a fixed recess 143 c is formed in the wedge member 143. Further, a fixing member 144 is fixed to the upper surface of the mechanism support portion 31 so as to be rotatable in the left-right direction.

  As shown in FIG. 8A, when the wedge member 143 is raised, the pull-in protrusion 42 provided on the base of the compression member 41 is restricted against the restricting portion 143b. At this time, the elastic holder 36 has been restored, and the compression member 41 has moved to the right side in the figure.

  As shown in FIG. 8B, when the wedge member 143 is pushed downward by using a tool, the compression member 41 is drawn to the left side by the wedge inclined portion 143a, the elastic holding body 36 is compressed, and the pipe member 2 is compressed. It is held from the inside. At this time, the wedge member 143 is pushed upward by the elastic restoring force of the elastic holding body 36, but the compression holding state of the elastic holding body 36 is maintained by fitting the fixing member 144 into the fixing recess 143c of the wedge member 143. it can.

  In addition, the compression mechanism of this invention is not restricted to what uses a wedge member. For example, a rotation cam that rotates around the compression member 41 is provided inside the mechanism support portion 31, and an operation member that rotates the rotation cam so that the pull-in protrusion 42 is pulled by the rotation cam is provided in the mechanism support portion 31. It may protrude outward from the side portion.

  In any case, it is possible to connect the end portion of the other pipe material to the middle part of the first pipe material 1 vertically by providing the mechanism support portion 31 in the connecting member 30 and providing the compression mechanism therein. Become.

DESCRIPTION OF SYMBOLS 1 1st pipe material 2 2nd pipe material 3 3rd pipe material 10 Connecting device 11 Holding frame part 15a, 15b Front plate part 16 Separation part 17 Elastic material 18 Metal member 20 Attachment / detachment mechanism 21 Engagement protrusion part 22 Cylindrical part 23 Stop flange portion 24 Fitting hole 25 Notch portion 26 Anti-rotation mechanism 27 Anti-rotation member 30 Connection member 31 Mechanism support portion 35 Elastic body support portion 35b Taper portion 36 Elastic holder 37 Metal member 38 Press plate 40 Compression mechanism 41 Compression member 42 Pull-in projection 43 Wedge member 44 Bolt 111 which is a fixing member Holding frame portion 120 Attachment / detachment mechanism 121 Male screw portion 140 Compression mechanism 143 Wedge member 144 Fixing member

Claims (7)

A holding frame part attached to the outer periphery of the shaft body, a mechanism support part fixed to the holding frame part, an elastic body support part extending from the mechanism support part, and an elastic support body supported by the elastic body support part And a compression member that extends from the mechanism support part through the inside of the elastic support part to the end of the elastic holding body,
The mechanism support part is provided with a compression mechanism that pulls the compression member and compresses the elastic holding body, and the compression mechanism can be operated from the outside of the mechanism support part. The pipe member attached to the part is held from the inside by the compressed elastic holding body ,
The holding frame part and the mechanism support part are detachable via an attachment / detachment mechanism,
In the attachment / detachment mechanism, the holding frame portion is provided with a latching projection having a plurality of cylindrical portions, and a latching flange portion extending from the latching projection in the radial direction of the cylindrical portion, and the mechanism support portion And a fitting hole for fitting into the cylindrical portion of the latching protrusion, and a notch having a larger opening dimension than the fitting hole. . A holding frame part attached to the outer periphery of the shaft body, a mechanism support part fixed to the holding frame part, an elastic body support part extending from the mechanism support part, and an elastic support body supported by the elastic body support part And a compression member that extends from the mechanism support part through the inside of the elastic support part to the end of the elastic holding body,
The mechanism support part is provided with a compression mechanism that pulls the compression member and compresses the elastic holding body, and the compression mechanism can be operated from the outside of the mechanism support part. The pipe member attached to the part is held from the inside by the compressed elastic holding body,
The holding frame part and the mechanism support part are detachable via an attachment / detachment mechanism,
In the attachment / detachment mechanism, the holding frame portion is provided with a male screw portion, and the mechanism support portion is provided with a female screw portion to be screwed to the male screw portion. 3. The pipe connection device according to claim 1, wherein the compression mechanism includes a wedge member that retracts the compression member, and a fixing member that fixes the wedge member in a state where the compression member is retracted. 4. A separation part is formed in a part of the holding frame part, and the attachment / detachment mechanism is provided across the separation part, and when the mechanism support part is attached via the attachment / detachment mechanism, The pipe connection device according to any one of claims 1 to 3 , wherein the holding frame portion is fastened to the shaft body. The pipe connection device according to any one of claims 1 to 4 , wherein the mechanism support portion is provided with a rotation stop member that fits into the hole of the holding frame portion. The elastic body support portion has a taper portion whose cross-sectional area becomes smaller as the distance from the mechanism support portion increases, and the elastic holding body is provided with a metal member that presses against the tube material when compressed. The pipe connecting device according to any one of claims 1 to 5 . The pipe connecting device according to any one of claims 1 to 6 , wherein an elastic material and a metal member that press-contacts the outer surface of the shaft body are provided inside the holding frame portion.

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