JP4931446B2 - Joint body connection means - Google Patents

Description

  The present invention relates to a joint body connecting means for watertightly connecting an insertion port of another fluid pipe to a receiving port of one fluid pipe.

  The connecting means of the conventional joint body is composed of saddles that are respectively hooked to the outer surfaces of the insertion port and the receiving port, and a pulling member that engages both ends of each saddle. By operating this drawing member, the receiving port and the insertion port are relatively drawn in the tube axis direction to connect the joint body (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 55-39190 (first page, FIG. 2)

  In Patent Literature 1, the saddle constituting the connecting means of the joint body has an inner diameter that is substantially the same diameter as the outer diameter of the insertion opening, and an inner curved portion that has an arc length corresponding to a substantially half circumference of the outer surface of the insertion opening. The saddle having such a configuration is inserted into the outer surface of the insertion opening from one direction, and the receiving opening and the insertion opening are drawn together by a drawing member.

  However, in order to insert the saddle in Patent Document 1 into the outer surface of the insertion port from one direction, the saddle only has an inner curved portion having an arc length corresponding to at most a half circumference of the outer surface of the insertion port. Even if the outer surface of the insertion slot is pressed and held by the pressing portions formed at both ends of the portion, it is only possible to press the outer surface along the outer surface of about half a circle at most, so that stable pressing and holding can be secured. In some cases, there was a difference between the insertion port and the receiving port.

  In addition, when the saddle is formed in a ring-shaped body so that it can be inserted over the entire outer surface of the insertion slot, a space for inserting such a saddle is required, and the insertion slot is configured. When the piping part to be carried out is buried in the ground or disposed in a narrow place, the above-mentioned work for securing the space is required.

  The present invention has been made paying attention to such a problem, and can be inserted into the insertion port from one direction, can be stably pressed and held, and the joint body that draws the insertion port and the receiving port without deviation. An object is to provide a connection means.

In order to solve the above-mentioned problem, the joint body connection means according to claim 1 of the present invention is a joint body connection means for watertightly connecting the insertion port of the other fluid pipe to the receiving port of one fluid pipe. And a part of the outer surface of the receiving port is formed in a bulging portion that bulges outward along the circumferential direction,
An insertion port fixing member fixed to the outer surface of the insertion port along the circumferential direction, and a flange formed on one end side of the insertion port are engaged with the bulging portion of the receiving port, and the other end side is engaged with the insertion port fixing member. And a drawing member that draws the receiving port and the insertion port relatively in the tube axis direction in at least two locations that are positioned substantially symmetrically with respect to the tube axis,
The insertion hole fixing member has an inner curved portion that is substantially the same diameter as the outer diameter of the insertion port and has an arc length exceeding at least a half circumference of the outer surface of the insertion port, and the insertion port at both ends of the inner curved portion. A pressing portion that presses and holds the outer surface, and at least a substantially central portion in the circumferential direction of the inner curved portion of the insertion port fixing member, and a protrusion,
Further, the inner curved portion has a divided structure engaged at a fulcrum portion formed in a radially outer direction of the protrusion at the approximate center in the circumferential direction, and in the divided inner curved portion constituting the divided structure A bolt is provided on the opposite side to the both ends of the inner curved portion, and the inner curved portion is configured to be rotatable around the fulcrum portion by screwing the bolt.
According to this feature, it rotates around the fulcrum so as to open both ends of the divided inner curved portion having a divided structure, and both ends are spaced apart from the outer diameter of the insertion port, and the insertion port fixing member is After surrounding in the circumferential direction of the insertion slot, by turning around the fulcrum part formed radially outward of the protrusion so as to close both ends of the divided inner curved part, it exceeds the half circumference of the outer surface of the insertion slot the spigot securing member comprises an inner curved portion of the arc length can be inserted from one direction to the spigot, is brought into contact with the protrusion on the outer surface of the spigot, the division-entrant portion around the fulcrum by threadedly inserted bolts The insertion port fixing member can be stably pressed and held on the outer surface of the insertion port by rotating and pressing the pressing portions at both end portions of the divided inner curved portion. In addition, it is possible to draw the receiving port and the insertion port without shifting with respect to the tube axis direction by using a drawing member configured in at least two positions positioned substantially symmetrically with respect to the tube axis. Furthermore, the internal music part which has a division structure can be rotated around a fulcrum part using a general purpose volt | bolt.

The connection means for a joint body according to claim 2 of the present invention is the connection means for a joint body according to claim 1, wherein the pressing portion turns the inner curved portion to turn the pipe shaft. It moves forward and backward, and presses and holds the outer surface of the insertion opening.
According to this feature, by rotating the inner curved portion, the pressing portion advances and retreats toward the tube axis, so that the outer surface of the insertion opening can be reliably pressed and held.

The connection means for a joint body according to claim 3 of the present invention is the connection means for a joint body according to claim 1 or 2, wherein the flange portion of the attracting member is connected to the bulging portion of the receiving port. It is characterized by being formed in a substantially U shape so that it can be surrounded.
According to this feature, the substantially U-shaped flange is surrounded by the bulging portion of the receiving port, so that the substantially U-shaped flange is hooked to the outer end side of the receiving port. It is possible to relatively separate the mouth and the insertion opening.

The joint body connecting means according to claim 4 of the present invention is the joint body connecting means according to any one of claims 1 to 3, wherein the attraction member has a rack and pinion structure. It is characterized by that.
According to this feature, the attracting member can be configured at low cost by using a general-purpose rack and pinion structure.

The joint body connecting means according to claim 5 of the present invention is the joint body connecting means according to any one of claims 1 to 4, wherein the joint body connecting means is at least in the circumferential direction of the inner curved portion of the insertion port fixing member. A projecting portion that bulges inward toward the tube axis is formed at a substantially central portion.
According to this feature, the outer surface of the insertion port protrudes by causing the protrusion to contact the outer surface of the insertion port and fixing the insertion port fixing member to the outer surface of the insertion port by the pressing portions at both ends of the inner curved portion. It is stably held at three points of the part and the pressing part.

The joint body connecting means according to claim 6 of the present invention is the joint body connecting means according to any one of claims 1 to 5, wherein the pressing portion has a predetermined width dimension in the tube axis direction. It is characterized by that.
According to this feature, since the pressing portion has a predetermined width dimension in the tube axis direction, the insertion port is reliably pressed along the tube axis, and the insertion port fixing member is displaced in the tube axis direction. Can be prevented.

The joint body connecting means according to claim 7 of the present invention is the joint body connecting means according to any one of claims 1 to 6, wherein the pressing portion is substantially the same as the outer diameter of the insertion slot. It is characterized by having a radiused portion.
According to this feature, since the pressing portion has a rounded portion having substantially the same diameter as the outer diameter of the insertion port, the insertion port is reliably pressed along the circumferential direction, and the insertion port fixing member is in the circumferential direction. Can be prevented.

The joint body connecting means according to claim 8 of the present invention is the joint body connecting means according to any one of claims 1 to 7, wherein the pressing portion is softer than the outer surface of the insertion slot. It is characterized by being covered with a soft material.
According to this feature, since the pressing portion is covered with a soft material that is softer than the outer surface of the insertion port, the outer surface of the insertion port can be prevented from being damaged when the pressing unit presses the insertion port.

  Examples of the present invention will be described below.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a plan view showing an overall image of a joint body connecting means in an embodiment of the present invention. FIG. 2 is a front view similar to FIG. FIG. 3 is a side view showing a situation in which the connecting means is inserted. FIG. 4 is a side view showing a state in which the connecting means is inserted. FIG. 5 is a partial cross-sectional view showing a state in which the receiving port and the insertion port are connected.

  As shown in FIGS. 1 and 2, the joint body according to the present invention has a watertight connection between the receiving port 5 of the straight pipe 2 as one fluid pipe and the insertion port 12 of the straight pipe 11 as the other fluid pipe. To connect to. In addition, fluid such as water and sewage or gas flows down in the fluid pipe.

  The joint body includes a receiving port 5 formed at the end of the straight tube 2, an insertion port 12 formed at the end of the straight tube 11 inserted into the inner surface of the receiving port 5, and the receiving port 5. And a bolt 9 as a fixing member for the insertion opening 12. Further, in the vicinity of the outer end of the receiving port 5, a part of the outer surface is formed in a bulging portion 5 a that bulges outward along the circumferential direction.

  Further, as shown in FIG. 5, bolt holes 5 b are formed at substantially equal intervals in the circumferential direction on the outer peripheral surface of the bulging portion 5 a of the receiving port 5, so that the tube shaft extends from the outside of the straight pipe 2. A bolt 9 is formed as a fixing member between the receiving port 5 and the insertion port 12 screwed in a direction orthogonal to C.

  A fixing claw 10 is provided at the tip of the bolt 9. The fixed pawl 10 is housed in a recess formed in the inner surface of the receiving port 5 along the circumferential direction.

  Next, as shown in FIG. 1 and FIG. 2, the connection means between the receiving port 5 and the insertion port 12 will be described. The connection unit in the present invention is fixed to the outer surface of the insertion port 12 along the circumferential direction. The insertion port fixing member 16 and the flange portion 17a formed on one end side are engaged with the bulging portion 5a of the receiving port 5 and the other end side is engaged with the insertion port fixing member 16, and the receiving port 5 and the insertion port 12 is mainly composed of a drawing member 17 that draws 12 in the direction of the tube axis C relatively.

  As shown in FIGS. 3 and 4, the insertion port fixing member 16 has an inner curved portion 16 d that is substantially the same diameter as the outer diameter of the insertion port 12 and has an arc length exceeding the half circumference of the outer surface of the insertion port 12; Pressing portions 18 and 18 that press and hold the outer surface of the insertion opening 12 at both end portions 16e and 16e of the inner curved portion 16d are provided.

  Furthermore, the inner curved portion 16d has a divided structure that is divided into a divided inner curved portion 16d ′ and a divided inner curved portion 16d ″ that are engaged by a fulcrum portion 16c formed substantially at the center in the circumferential direction. The fulcrum portion 16c is configured to be rotatable.

  Further, as described above, the inner curved portion 16d having the divided structure is screwed around the rotation axis D of the general-purpose bolt 16f screwed into the nut 16g, so that the respective divided inner curved portions 16d ′ and 16d ″ are It can be rotated around the fulcrum 16c.

  By doing so, the both ends 16e and 16e of the inner music part 16d having a divided structure divided into the divided inner music part 16d ′ and the divided inner music part 16d ″ are rotated around the fulcrum part 16c so as to open. After moving the both ends 16e, 16e far away from the outer diameter of the insertion slot 12 and surrounding the insertion slot fixing member 16 in the circumferential direction of the insertion slot 12, both ends 16e, 16e of the inner curved part 16d By rotating around the fulcrum portion 16c so as to close the insertion port, the insertion port fixing member 16 including the inner curved portion 16d having an arc length exceeding the half circumference of the outer surface of the insertion port 12 can be inserted into the insertion port 12 from one direction. By pressing the pressing portions 18 and 18 at both end portions 16e and 16e of the inner curved portion 16d, the insertion port fixing member 16 can be stably pressed and held on the outer surface of the insertion port 12.

  In addition, the inner curved portion 16d having the divided structure divided into the divided inner curved portion 16d ′ and the divided inner curved portion 16d ″ by using the general-purpose bolt 16f can be used as a fulcrum at low cost. It can be rotated around the portion 16c.

  Further, the pressing portions 18 and 18 move back and forth toward the tube axis C by rotating the inner curved portion 16d, and press and hold the outer surface of the insertion opening 12. By doing in this way, the press parts 18 and 18 can press-hold the outer surface of the insertion port 12 reliably.

  Further, the pressing portion 18 has a predetermined width dimension in the tube axis C direction, and the insertion port 12 extends along the circumferential direction of the outer surface of the insertion port 12 at two locations separated by a predetermined length in the tube axis C direction. Claw portions 18a and 18a as rounded portions having substantially the same diameter as the outer diameter. Thus, since the pressing part 18 has a predetermined width dimension in the tube axis C direction, the insertion port 12 is reliably pressed along the tube axis C, and the insertion port fixing member 16 is in the tube axis C direction. Can be prevented.

  In addition, since the pressing portion 18 has a claw portion 18a as a rounded portion having substantially the same diameter as the outer diameter of the insertion opening 12, the insertion opening 12 is reliably pressed along the circumferential direction, and the insertion opening is fixed. The member 16 can be prevented from shifting in the circumferential direction. In particular, the claw portion 18a as a rounded portion having the same diameter as the outer diameter of the insertion opening 12 is formed at two locations separated by a predetermined length in the direction of the tube axis C, so that the pressing force is applied to the claw portion 18a. Since it can concentrate on a front-end | tip, the shift | offset | difference of the pipe axis C direction and circumferential direction which were mentioned above can be prevented effectively. Note that the rounded portion is not particularly required to be formed in the claw portion 18a, and may be formed in the rounded portion over the entire surface of the pressing portion 18, for example.

  The pressing portion 18 described above may be covered with a soft material (not shown) that is softer than the outer surface of the insertion opening 12. By doing in this way, when the press part 18 presses the insertion port 12, it can prevent damaging the outer surface of the insertion port 12. FIG.

  Further, a protrusion 16 a that bulges inward toward the tube axis C and is softer than the outer surface of the insertion opening 12 is formed at a substantially central portion in the circumferential direction of the inner curved portion 16 d of the insertion opening fixing member 16. Yes. By doing in this way, while making the protrusion part 16a softer than the outer surface of the insertion port 12 contact | abut to the outer surface of the insertion port 12, it inserts by the press parts 18 and 18 in the both ends 16e and 16e of the inner curved part 16d. By fixing the fixing member 16 to the outer surface of the insertion opening 12, the outer surface of the insertion opening 12 is stably held at the three points of the protruding portion 16 a and the pressing portions 18 and 18. Further, since the protrusion 16a is softer than the outer surface of the insertion opening 12, even if the protrusion 16a contacts the outer surface of the insertion opening 12, the outer surface of the insertion opening 12 is not damaged.

  Moreover, the projection part 16a has a predetermined width dimension in the tube axis C direction similarly to the pressing part 18, and, in this way, the stability of holding the outer surface of the insertion port 12 in the tube axis C direction. Will improve. Furthermore, the protrusion 16a is formed in a rounded portion having substantially the same diameter as the outer diameter of the insertion opening 12. By doing so, the stability of holding the outer surface of the insertion opening 12 in the circumferential direction is improved.

  In addition, if the above-mentioned soft protrusion 16a is formed at least at a substantially central portion in the circumferential direction of the inner curved portion 16d, a plurality of the soft protruding portions 16a may be formed at appropriate positions along the circumferential direction of the inner curved portion 16d. Good. Further, the protrusion 16 a may not be particularly softer than the outer surface of the insertion opening 12.

  The pulling member 17 has a rack and pinion structure composed of a rack 17b and a pinion 17c meshing with each other, and is configured at two locations positioned substantially symmetrically with respect to the tube axis C. On the receiving port 5 side of the racks 17b and 17b arranged in the C direction, flanges 17a and 17a are attached.

  The pinions 17c and 17c are rotatably provided at both ends 16e and 16e of the insertion port fixing member 16, and the racks 17b and 17b engaged with the pinions 17c and 17c are rotated by the rotation of the pinions 17c and 17c. It is engaged so as to be movable in the direction of the tube axis C.

  Further, the flange portion 17a is formed in a substantially U shape so as to be able to surround the bulging portion 5a of the receiving port 5, and through a substantially U-shaped member 20 as a latching member that comes into contact with the bulging portion 5a, It is hooked with the bulging portion 5a. The substantially U-shaped member 20 has an inner diameter that is substantially the same as the outer diameter of the receiving port 5, and is disposed on the outer surface of the receiving port 5 in contact with the back surface of the bulging portion 5 a along the circumferential direction. Yes. The flange portion 17 a of the attracting member 17 is hooked at both end portions 20 a and 20 a of the substantially U-shaped member 20.

  By doing in this way, the latching member used with the attracting members 17 and 17 positioned substantially symmetrically with respect to the tube axis C is the substantially U-shaped member 20, and is a place where the latching member 17 a is latched. By using both ends 20a, 20a of the substantially U-shaped member 20, the substantially U-shaped member 20 as a latching member can be easily attached to the outer surface of the receiving port 5 from one direction by the handle portion 20c.

  Further, a flange mounting base 20b for mounting the flange portion 17a is projected from the distal ends of both end portions 20a of the U-shaped member 20, and thus protrudes from the distal ends of both end portions 20a of the substantially U-shaped member 20. By placing the collar part 17a of the drawing member 17 on the collar part mounting table 20b, the collar part 17a can be hooked in a stable state when the receiving port 5 and the insertion slot 12 are drawn. .

  Next, the connection between the receiving port 5 and the insertion port 12 will be described. As shown in FIG. 4, the pinion 17 c of the attracting member 17 is rotated by the rotating tool K to engage with the pinion 17 c. When the rack 17b is moved in the direction of the tube axis C (the direction of the white arrow in FIGS. 1 and 2), the bulging portion 5a of the receiving port 5 is hooked on the flange portion 17a via the substantially U-shaped member 20. The attraction force is transmitted to.

  Thus, since the flange part 17a of the attracting member 17 is latched with the bulging part 5a via the substantially U-shaped member 20 attached to the bulging part 5a of the receiving port 5, the attracting member 17 The rack 17b can be configured to be short, and regardless of the shape of the bulging portion 5a, the pulling force by the pulling member 17 can be reliably received in the direction of the tube axis C via the substantially U-shaped member 20 and And can be drawn relatively.

  Further, the insertion port fixing member 16 having the inner curved portion 16d having an arc length exceeding the half circumference of the outer surface of the insertion port 12 is pressed and held by the pressing portions 18 and 18 at both end portions 16e and 16e of the inner curved portion 16d. Since it can be fixed to the outer surface of the mouth 12 in a stable state, it is possible to prevent the insertion port fixing member 16 from periodically swinging by operating the attraction member 17 and reliably attract the receiving port 5 and the insertion port 12. I can do it.

  In particular, at both ends 16e and 16e of the insertion fixing member 16, racks 17b and 17b engaged with the pinions 17c and 17c of the pulling member 17 are moved in the direction of the tube axis C, and at both ends 16e and 16e, Since the insertion port fixing member 16 is pressed and held on the outer surface of the insertion port 12 and is in a stable state, periodic oscillation due to the movement of the racks 17b and 17b is reliably prevented, and the rotary tool K can be operated. The axial force of the attracting member 17 can be transmitted stably.

  Further, by using the attracting members 17, 17 configured at two positions located substantially symmetrically with respect to the tube axis C, the receiving port 5 and the insertion port 12 are pulled without being displaced with respect to the tube axis C direction. I can send it.

  The attracting member of the present invention is not limited to being configured at two locations positioned substantially symmetrically with respect to the tube axis C as in the present embodiment, and the receiving port 5 and the insertion port 12 are connected to the tube axis C. The attracting member may be configured at three or more locations as long as it can be attracted without shifting with respect to the direction.

  Further, the pulling member 17 has a rack and pinion structure composed of a rack 17b and a pinion 17c meshing with each other, and in this way, the pulling member is inexpensively made use of a general-purpose rack and pinion structure. 17 can be configured.

  As described above, by using the pulling member 17, the receiving port 5 and the insertion port 12 are relatively drawn, and the insertion port 12 is inserted inward of the receiving port 5, and the sealing member 8 is compressed by the outer peripheral surface of the insertion port 12 to seal the gap between the inner surface of the receiving port 5 and the outer surface of the insertion port 12 in a water-tight manner (see FIG. 5).

  Next, as shown in FIG. 5, the fixing between the receiving port 5 and the insertion port 12 will be described. The bolt 9 is screwed into the bulging portion 5 a of the receiving port 5 in a direction perpendicular to the tube axis C. After the gap between the inner surface of the receiving port 5 and the outer surface of the insertion port 12 is sealed, the receiving port 5 and the insertion port 12 are fixedly connected by a general-purpose bolt 9.

  Further, the fixing pawl 10 is provided at the tip of the bolt 9, and by doing so, the tip 10 a of the fixing pawl 10 is pressed toward the tube axis C by the screwing of the bolt 9, and Biting into the outer peripheral surface, the receiving port 5 and the insertion port 12 can be securely connected. Furthermore, the fixed connection as described above can stably maintain the sealing performance of the joint body even when an external force or an internal pressure is applied to the receiving port 5 or the insertion port 12.

  Note that the bolt 9 in this embodiment does not necessarily have to be formed in a direction orthogonal to the tube axis C. For example, the bolt 9 is screwed in an oblique direction having a predetermined angle other than the direction orthogonal to the tube axis C. It may be formed as follows.

  Next, separation of the receiving port 5 and the insertion port 12 using the drawing member 17 in the present embodiment will be described. In the state where the receiving port 5 and the insertion port 12 are connected in a watertight manner as described above. Similarly, the insertion port fixing member 16 and the drawing member 17 are installed. The flange portion 17 a of the attracting member 17 formed in a substantially U shape is surrounded by the bulging portion of the receiving port 5.

  A rack 17b that is engaged with the pinion 17c by rotating the pinion 17c of the attracting member 17 in the direction opposite to the above by surrounding the flange portion 17a formed in a substantially U-shape with the bulging portion 5a of the receiving port 5. Moves in the opposite direction to that described above, and a force for relatively separating the receiving port 5 and the insertion port 12 is transmitted by hooking the substantially U-shaped flange portion 17a on the outer end side of the receiving port 5. It is possible to relatively separate the receiving port 5 and the insertion port 12 which are connected in a watertight manner.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the insertion port 12 and the receiving port 5 connected to each other constitute a pipe member composed of the straight pipe 2 and the straight pipe 11 as shown in FIGS. The insertion port 12 and the receiving port 5 used in the present invention are not necessarily limited to the straight tube 2 and the straight tube 11 as long as they have a structure that can be connected to each other. An elbow pipe having a curved portion in part along the axis may be used, or a hose having flexibility may be used. Moreover, the insertion port 12 and the receiving port 5 may comprise a part of various pumps or a storage tank.

  Moreover, in the said Example, although the bolt hole 5b is formed in the outer peripheral surface of the bulging part 5a of the receptacle 5, and the volt | bolt 9 as a fixing member screwed in the bolt hole 5b is comprised, As long as a part of the outer surface bulges outward in the circumferential direction in the vicinity of the outer end of the receiving port 5 and the hooking member is hooked, the bolt hole 5b is not particularly formed. For example, the bulging portion may be a flange.

  Moreover, in the said Example, although the collar part 17a of the attraction | suction member 17 is formed in the substantially U shape so that the bulging part 5a of the receptacle 5 can be enclosed, a collar part has the receptacle 5 and the insertion port. 12 is not necessarily formed in a substantially U-shape as long as it is hooked to the bulging portion 5a so as to be relatively drawable. For example, the bulging portion 5a is formed in a substantially L-shape. It may be hooked on the back side.

  Moreover, in the said Example, the substantially U-shaped member 20 which has an internal diameter substantially the same diameter as the outer diameter of the receiving port 5 is used as a latching member which latches the collar part 17a of the attracting member 17. FIG. However, the latching member is interposed between the flange portion 17a and the bulging portion 5a of the receiving port 5 so that the pulling force by the pulling member 17 is reliably provided in the tube axis C direction. For example, the shape of the hooking member may be formed in a ring shape in the circumferential direction of the receiving port. Furthermore, the collar part may be directly latched by the bulging part of a receiving port, without using especially the latching member mentioned above.

  Moreover, in the said Example, the press parts 18 and 18 provided in the both ends 16e and 16e of the inner curved part 16d of the insertion fixing member 16 are the rotation operation | movement of each division | segmentation inner curved part 16d 'and 16d' '. It operates and is formed so as to be able to press the outer surface of the insertion opening 12, but the pressing portion is not necessarily limited to the configuration described above. For example, the pressing portion is inserted by screwing a bolt disposed behind the pressing portion. It may be configured to be able to advance and retract toward the outer surface of the insertion opening and to press and hold the outer surface of the insertion opening.

  Moreover, in the said Example, although the attraction | suction member 17 has the rack pinion structure which consists of the rack 17b and the pinion 17c which mutually meshed | engaged, an attraction | suction member attracts | sucks a receptacle and an insertion port. As long as there is, it is not restricted to the rack and pinion structure mentioned above, For example, a bolt nut structure may be sufficient.

It is a top view which shows the whole image of the connection means of the coupling body in the Example of this invention. It is a front view like FIG. It is a side view which shows the condition which inserts a connection means. It is a side view which shows the condition which inserted the connection means. It is a partial cross section figure which shows the condition which connected the receptacle and the insertion opening.

Explanation of symbols

2 Straight pipe (fluid pipe)
5 Receptacle 5a Swelling portion 5b Bolt hole 8 Seal member 9 Bolt 10 Fixed claw 10a Tip 11 Straight pipe (fluid pipe)
12 Insertion 16 Insertion fixing member 16a Protrusion 16c Support point 16d Inner curve 16d 'Divided inner curve 16d''Divided inner curve 16e Both ends 16f Bolt 16g Nut 17 Pulling member 17a Hook 17b Rack 17c Pinion 18 Press part 18a Claw part (Earl part)
20 substantially U-shaped member 20a both ends 20b collar mounting base 20c handle part C tube axis D rotation axis K rotating tool

Claims (8)

A joint body connecting means for watertightly connecting the insertion port of the other fluid tube to the receiving port of one fluid tube, wherein a part of the outer surface of the receiving port bulges outward along the circumferential direction. Formed in the bulging part
An insertion port fixing member fixed to the outer surface of the insertion port along the circumferential direction, and a flange formed on one end side of the insertion port are engaged with the bulging portion of the receiving port, and the other end side is engaged with the insertion port fixing member. And a drawing member that draws the receiving port and the insertion port relatively in the tube axis direction in at least two locations that are positioned substantially symmetrically with respect to the tube axis,
The insertion hole fixing member has an inner curved portion that is substantially the same diameter as the outer diameter of the insertion port and has an arc length exceeding at least a half circumference of the outer surface of the insertion port, and the insertion port at both ends of the inner curved portion. A pressing portion that presses and holds the outer surface, and at least a substantially central portion in the circumferential direction of the inner curved portion of the insertion port fixing member, and a protruding portion,
Further, the inner curved portion has a divided structure engaged with a fulcrum portion formed at a radially outer position of the projection at a substantially center in the circumferential direction, and the divided inner curved portion constituting the divided structure A joint body connecting means characterized in that a bolt is provided on the opposite side to the both end sides of the inner curved portion, and is configured to be rotatable around the fulcrum portion by screwing the bolt.   2. The joint connecting means according to claim 1, wherein the pressing portion rotates and retreats toward the tube axis to press and hold the outer surface of the insertion opening by rotating the inner curved portion.   The connecting means for a joint body according to claim 1 or 2, wherein the flange portion of the pulling member is formed in a substantially U shape so as to surround the bulging portion of the receiving port.   The joint member connecting means according to any one of claims 1 to 3, wherein the attraction member has a rack and pinion structure.   The protrusion part which bulges inward toward the tube axis is formed at least at a substantially central part in the circumferential direction of the inner curved part of the insertion port fixing member. The joint body connecting means according to claim 1.   6. The joint connecting means according to claim 1, wherein the pressing portion has a predetermined width in the tube axis direction.   The joint pressing means according to any one of claims 1 to 6, wherein the pressing portion has a rounded portion having substantially the same diameter as the outer diameter of the insertion opening.   The joint pressing means according to any one of claims 1 to 7, wherein the pressing portion is covered with a soft material softer than an outer surface of the insertion opening.

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