JP2012220007A - Pipe joint, and header for piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe joint which enables connection and connection release, and a header for piping which is composed of this pipe joint.SOLUTION: A header unit 12 can be connected by inserting the other end portion 16 of an inner pipe portion 14 into a connection portion 18 and retaining it by a holding member 48. Moreover, the connection of the header unit 12 can be released by pushing a collet 34 into the far side of the connection portion 18 by a pushing member 56 inserted into the space 54.

Description

  The present invention relates to a pipe header that branches an inflowed fluid and a pipe joint that constitutes the pipe header by connecting a plurality of pipe headers.

  In recent years, pipe headers configured by connecting a plurality of pipe joints each having a straight flow path and a branched flow path branched from the straight flow path have been used. In the header structure of Patent Document 1, the inner cylinder formed at the end of the header base is inserted into the cylinder formed at the end of the other header base, and one-touch connection is made to connect a plurality of header bases. It is comprised by.

  However, since the connection between the header bases cannot be released, the structure of the header structure once assembled cannot be changed. For example, when it is necessary to change the structure of the header structure at the site where such a piping header is installed, it is not possible to reduce the header base or change the connection order on the spot. I have to do it again.

JP 2007-100807 A

  In view of such facts, an object of the present invention is to provide a pipe joint that can be connected and disconnected, and a pipe header that includes the pipe joint.

  The invention according to claim 1 is an inner tube portion in which a connecting portion is formed at one end portion, an outer tube portion provided on the outer periphery of the inner tube portion by exposing the other end portion of the inner tube portion, In the pipe joint having the above, the connecting part includes a holding member that holds the other end part of the inner pipe part of the one pipe joint inserted into the connecting part, and a release member that releases the holding state by the holding member. The other end of the inner pipe is inserted into the connecting part of another pipe joint and is held by the holding member, and the one end of the outer pipe and the other pipe joint are connected. It is a pipe joint in which a space in which the release member can be operated is formed between the two parts.

  In the first aspect of the present invention, the other end of the inner pipe portion is inserted into the connecting portion of another pipe joint and is held by a holding member of the other pipe joint, thereby connecting the pipe joint and the other pipe joint. Can be linked. Further, by operating the release member using a space formed between one end portion of the outer pipe portion and the connecting portion of the other pipe joint, the other end of the inner pipe portion by the holding member of the other pipe joint The holding state of the part is released, and the connection between the pipe joint and the other pipe joint can be released.

  The invention according to claim 2 is the pipe joint according to claim 1, wherein the space is a cutout portion formed by cutting out one end portion of the outer tube portion.

  In the invention according to claim 2, by making the space a notch, various sizes, arrangements, and numbers of spaces can be formed at one end of the outer tube.

  According to a third aspect of the present invention, a plurality of the cutout portions are formed along a circumferential direction of one end portion of the outer tube portion.

  In the invention according to claim 3, by forming a plurality of notches along the circumferential direction of one end of the outer tube portion, "the connection of the pipe joint cannot be released unless the plurality of notches are used simultaneously". Can be. That is, it is possible to prevent the connection of the pipe joint from being arbitrarily released. Moreover, the person who can cancel | release connection of a pipe joint can be restrict | limited to a specific person (person who can connect a pipe joint reliably). In this way, since this person (specific person) will perform the pipe joint connection work, it is possible to prevent a pipe joint connection error.

  The invention described in claim 4 has a branch flow path that branches off from the inner tube portion.

  In the invention according to claim 4, the fluid flowing into the pipe joint can be branched.

  Invention of Claim 5 is the header for piping comprised by connecting the pipe joint of any one of Claims 1-4 in multiple numbers.

  In invention of Claim 5, the pipe header which combined the pipe joint variously can be comprised by connecting two or more pipe joints.

  Since the present invention is configured as described above, it is possible to provide a pipe joint that enables connection and disconnection, and a pipe header that includes the pipe joint.

It is a perspective view which shows the header for piping which concerns on embodiment of this invention. It is a sectional side view which shows the header for piping which concerns on embodiment of this invention. It is a sectional side view which shows the state before connecting the pipe joint which concerns on embodiment of this invention. It is a sectional side view which shows the state which connected the pipe joint which concerns on embodiment of this invention. It is a sectional side view showing the state where the drawing force acted on the inner pipe of the pipe joint concerning the embodiment of the present invention. It is a sectional side view which shows the method to cancel | release the connection of the pipe joint which concerns on embodiment of this invention. It is a perspective view showing a method of canceling connection of a pipe joint concerning an embodiment of the present invention. It is a cross-sectional view which shows the notch part of the pipe joint which concerns on embodiment of this invention. It is a perspective view which shows the pushing member which concerns on embodiment of this invention. It is a sectional side view which shows the modification of the pipe joint which concerns on embodiment of this invention. It is a sectional side view which shows the example of application of the pipe joint which concerns on embodiment of this invention. It is a perspective view which shows the nail | claw member and release ring of the connection mechanism which can apply the pipe joint which concerns on embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. First, a pipe header and pipe joint according to an embodiment of the present invention will be described.

  As shown in the perspective view of FIG. 1, the piping header 10 is configured by connecting a plurality of header units 12 as pipe joints. As shown in the side sectional view of FIG. 2, the header unit 12 includes an inner tube 14 as an inner tube portion, a skin resin 24 as an outer tube portion, a connecting portion 18, and a branch port 20.

  1 and 2 show three header units 12 that are connected to each other. For convenience of explanation, the header unit 12 as one pipe joint arranged on the left side is the header unit 12A, the header unit 12 arranged in the center is the header unit 12B, and the other pipe joint is arranged on the right side. The header unit 12 is referred to as a header unit 12C.

  The inner tube 14 has a straight flow path 22 through which a fluid such as water or hot water flows. Further, the inner pipe 14 is provided with a branch channel (not shown) branched from the straight channel 22 and substantially orthogonal to the straight channel 22. A pipe body such as water supply, hot water supply, or drainage pipe is detachably connected to the branch port 20 serving as an inlet / outlet of the fluid flowing through the branch channel.

  The connecting portion 18 includes a cylindrical portion 92 formed at one end of the inner tube 14 and a cap 38 provided on the cylindrical portion 92. That is, the connecting part 18 is formed at one end of the inner tube 14. The outer surface (outer periphery) of the central portion of the inner tube 14 (near the intersection of the straight flow path 22 and the branch flow path) is covered with the outer resin 24 with the other end 16 of the inner tube 14 exposed. .

  A male screw 36 is formed on the outer peripheral surface of the cylindrical portion 92, and a cap 38 formed in a cylindrical shape is attached to the cylindrical portion 92 by screwing the male screw 36 into a female screw 40 formed on the inner peripheral surface. It has been.

  An O-ring 30, a support ring 32, and a collet 34 as a release member are formed on the inner wall of the cylindrical portion 92 from the opening 26 formed in the other end 16 of the inner tube 14 toward the opening 28 of the cap 38. It is provided in order. In the following description, the direction from the opening 26 to the opening 28 with respect to the material axis of the inner tube 14 is the X direction, and the direction from the opening 28 to the opening 26 (the direction opposite to the X direction) is Y. The direction. The O-ring 30, the support ring 32, and the collet 34 are annular members.

  When the other end 16 of the inner pipe 14 of one header unit 12 is inserted into the cylindrical portion 92, the O-ring 30 comes into contact with the outer peripheral surface of the inner pipe 14 and is connected to the inner pipe 14. The water-stopping property at the connecting portion with the portion 18 is ensured (a fluid does not leak from the connecting portion between the inner tube 14 and the connecting portion 18).

  As shown in the side sectional view of FIG. 5, a flange portion 42 protruding outward in the radial direction of the support ring 32 is formed at the end of the support ring 32 on the opening 28 side, and the O-ring 30 side of the support ring 32 is formed. A flange portion 44 that protrudes inward in the radial direction of the support ring 32 is formed at the end portion of the support ring 32.

  The support ring 32 is fixed to the cylindrical portion 92 by sandwiching the flange portion 42 between the end portion of the cylindrical portion 92 and the cap 38 attached to the cylindrical portion 92.

  The flange portion 44 is located between the O-ring 30 and the collet 34, and the distal end portion of the flange portion 44 is wedge-shaped so as to have a tapered portion 46 that is inclined inward in the radial direction of the support ring 32 in the X direction. Is formed.

  The collet 34 is provided so as to be movable in the X direction and the Y direction, and can be expanded and contracted in the radial direction of the collet 34 by a plurality of material axis direction slits (not shown) formed in the collet 34. The collet 34 is provided with a plurality of claw members 48 as holding members protruding inward in the radial direction from the inner peripheral surface along the circumferential direction. The claw member 48 protrudes inward in the radial direction of the collet 34 in the Y direction. That is, a claw member 48 as a holding member is provided on the inner wall of the cylindrical portion 92.

  A tapered portion 50 is formed in the vicinity of the intermediate portion in the X direction on the outer peripheral surface of the collet 34 so as to reduce the outer diameter of the collet 34 in the X direction. A tapered portion 52 that faces the tapered portion 50 is formed on the inner peripheral surface of the cap 38.

  A portion of the outer shell resin 24 is notched to form one notch 54. The notch 54 is formed in a semicircular arc shape in which the lower half of the outer resin 24 is notched as shown in FIG. A push member 56 described later is inserted into the notch 54.

  Next, connection and release of connection of the header unit according to the embodiment of the present invention will be described. In the following description, connection and release of connection between the header unit 12B and the header unit 12C will be described, but the same applies to connection and release of connection between other header units.

  When the other end portion 16 of the inner tube 14 of the header unit 12B is inserted in the Y direction into the connecting portion 18 of the header unit 12C shown in FIG. 3, the claw member 48 of the collet 34 is moved into the inner side as shown in the side sectional view of FIG. The collet 34 moves in the Y direction together with the inner tube 14 in contact with the outer peripheral surface of the tube 14. As a result, the end of the collet 34 slides on the tapered portion 46 of the support ring 32, and the collet 34 expands in the radial direction. Therefore, the force which presses the nail | claw member 48 to the outer peripheral surface of the inner pipe 14 reduces, and the other end part 16 of the inner pipe 14 can be easily inserted in the connection part 18. FIG.

  The inner pipe 14 is pulled out from the connecting portion 18 by flowing a fluid through the inner pipe 14 (straight flow path 22) and pressurizing the inner pipe 14 (straight flow path 22), or by pulling the header unit 12B. When an intended force is applied, the inner tube 14 moves in the X direction as shown in FIG. As a result, the end of the collet 34 slides down on the tapered portion 46 of the support ring 32, and the collet 34 is reduced in diameter in the radial direction. Therefore, the force that presses the claw member 48 against the outer peripheral surface of the inner tube 14 is increased, and the other end portion 16 of the inner tube 14 is prevented from coming off from the connecting portion 18, and the other end portion of the inner tube 14 is connected to the connecting portion 18. 16 can be held.

  Further, when the force for pulling out the inner tube 14 from the connecting portion 18 continues to act, the collet 34 further moves in the X direction, and the tapered portion 50 of the collet 34 slides against the tapered portion 52 of the cap 38. To do. As a result, the collet 34 is radially reduced in diameter, the force for pressing the claw member 48 against the outer peripheral surface of the inner tube 14 is increased, and the claw member 48 bites into the outer peripheral surface of the tube portion 16. The other end portion 16 of the inner tube 14 can be held by the connecting portion 18 by preventing the other end portion 16 from slipping out.

  When removing the other end portion 16 of the inner pipe 14 of the header unit 12B from the connecting portion 18 of the header unit 12C and removing the header unit 12B from the header unit 12C, first, a side sectional view of FIG. As shown in the perspective view of FIG. 7A, the pushing member 56 is inserted into the notch 54, and the pushing member 56 is disposed in front of the collet 34 as shown in the side sectional view of FIG. As shown in FIGS. 6A and 7A, the pressing member 56 is provided so as to protrude radially outward from the plate portion 58 having a semicircular arc cross section and the end portion of the plate portion 58. It is comprised by the collar part 60. FIG.

  Next, as shown in the perspective views of FIGS. 6C and 7B, the pushing member 56 is pushed in the Y direction, and the end surface of the plate portion 58 is brought into contact with the end surface of the collet 34 to Push the collet 34 to the side (in the Y direction). As a result, the collet 34 moves in the Y direction, so that the end of the collet 34 slides on the tapered portion 46 of the support ring 32, and the collet 34 expands in the radial direction. Therefore, the force for pressing the claw member 48 against the outer peripheral surface of the inner tube 14 is lost, and the other end portion 16 of the inner tube 14 of the header unit 12B can be pulled out from the connecting portion 18 of the header unit 12C. That is, the holding state in which the claw member 48 prevents the other end portion 16 of the inner tube 14 from coming out of the connecting portion 18 is released.

  As described above, in the header unit 12, the header unit 12B has the inner pipe 14 (the other end 16) inserted into the connecting portion 18 of the header unit 12C and is held by the claw member 48 of the header unit 12C. A notch 54 serving as a space where the collet 34 can be operated is provided between one end of the 12B outer resin 24 and the connecting portion 18 (cap 38) of the header unit 12C.

  Next, operations and effects of the piping header and the header unit according to the embodiment of the present invention will be described.

  As shown in FIGS. 3 and 4, the other end 16 of the inner pipe 14 of the header unit 12B is inserted into the connecting portion 18 of the header unit 12C and held by the claw member 48 of the header unit 12C. The header unit 12C can be connected.

  Further, as shown in FIGS. 6A to 6C, a pressing member 56 is inserted into the notch 54 and disposed in front of the collet 34, and the pressing member 56 causes the collet 34 to move to the back side of the cylindrical portion 92 ( (In the Y direction), the state where the claw member 48 prevents the other end portion 16 of the inner tube 14 inserted into the connecting portion 18 from coming off is released, and the connection between the header unit 12B and the header unit 12C is released. can do. That is, by operating the collet 34 using the space of the notch 54, the holding state of the other end 16 of the inner tube 14 by the claw member 48 of the header unit 12C is released, and the header unit 12B and the header unit 12C Can be disconnected.

  As described above, since the connection of the header unit 12 and the connection of the header unit 12 can be released, when it is necessary to change the configuration of the header structure of the pipe header 10 at the site where the pipe header 10 is installed, On the spot, the header unit 12 can be reduced, added, and the connection order can be changed. As a result, the header unit 12 that cannot be used due to a change in the configuration of the header structure of the pipe header 10 and is discarded and wasted can be reduced, and an operator can connect the header unit 12 with an incorrect configuration. The header unit 12 can be connected on site without fear of losing.

  Moreover, when it becomes necessary to change the structure of the header structure of the piping header 10 at the site, it is not necessary to remanufacture at the factory, so that it is possible to prevent delays in the piping work at the site.

  In addition, by making the space where the collet 34 as the release member can be operated as the cutout portion 54, various sizes, arrangements, and numbers of spaces can be formed at one end portion of the outer shell resin 24.

  Further, the fluid flowing into the header unit 12 can be branched by the branch flow path branched from the inner pipe 14.

  Moreover, the header 10 for piping which combined the header unit 12 variously can be comprised by connecting the header unit 12 in multiple numbers.

  The embodiment of the present invention has been described above.

  In the embodiment of the present invention, an example in which the cutout portion 54 is formed in a semicircular arc shape is shown. However, a pressing member is inserted and disposed in front of the collet 34, and the collet 34 is connected to the connecting portion 18 by the pressing member. The cutout portion 54 may have any shape as long as it can be pushed to the back side, and a plurality of the cutout portions 54 may be formed along the circumferential direction of the outer skin resin 24. For example, as shown in the cross-sectional view of FIG. 8B, a circular notch 54 is formed on the entire circumference of one end portion of the outer resin 24 in a front view (in the AA cross section of FIG. 2). Alternatively, as shown in the cross-sectional views of FIGS. 8C and 8D, a plurality of cutout portions 54 may be formed along the circumferential direction of one end portion of the outer shell resin 24. In the case of the notch portion 54 in FIG. 8C, a pushing member 56 as shown in the perspective view of FIG. 9A is used, and in the case of the notch portion 54 in FIG. The pushing member 56 as shown in the perspective view of FIG.

  By forming a plurality of cutouts 54 along the circumferential direction at one end of the outer shell resin 24, “a pressing member 56 that can simultaneously insert the pressing member 56 into the plurality of cutouts 54 and press the collet 34. (If the plurality of notches 54 are not used at the same time, the header unit 12 cannot be disconnected). That is, the connection of the header unit 12 can be prevented from being arbitrarily released. Moreover, the person who can cancel | release connection of the header unit 12 can be restrict | limited to a specific person (person who can connect the header unit 12 reliably). In this way, since this person (specific person) performs the connecting operation of the header unit 12, a connection error of the header unit 12 can be prevented. In addition, the person who can release the connection of the header unit 12 can be limited to a specific person by closing the housing portion 54 with a cover that cannot be removed without using a special jig or the like.

  Further, in the embodiment of the present invention, an example in which the outer surface of the inner tube 14 as the inner tube portion is covered with the outer shell resin 24 as the outer tube portion is shown. You may make it comprise one component (henceforth a "joint main body") with which the pipe | tube 14 was integrated. In this case, the joint body is composed of an inner tube portion having the same configuration as the inner tube 14 and an outer tube portion having the same configuration as the outer resin 24. That is, the inner part of the joint body, which is one member, is the inner pipe part, and the outer part is the outer pipe part.

  Further, in the embodiment of the present invention, the example in which the notch portion 54 is formed by notching the outer shell resin 24 is shown. However, for example, as shown in the side sectional view of FIG. In the case of the header unit 12 having a configuration in which only the inner tube 14 to be covered is covered with the outer resin 24, the length of the other end portion 16 of the inner tube 14 in the material axis direction is increased to connect the connecting portion of the header unit 12C. 18, in a state where the other end portion 16 of the inner pipe 14 of the header unit 12B is completely inserted, a space (a space 94 where the collet 34 can be operated) can be formed by inserting the pushing member 56 and arranging it in front of the collet 34. Also good.

  In the embodiment of the present invention, the holding member is the claw member 48 and the release member is the collet 34. However, the inner tube portion of the other header unit inserted into the connecting portion of one header unit is shown. Implementation of the present invention for a header unit having a holding member that prevents the end portion from coming out and a release member that releases the holding state of the inner tube portion by being pushed to the back side of the connecting portion. The form is applicable.

  For example, you may make it provide the notch part 64 in header unit 62A, 62B of the structure shown in the side view of FIG. In FIG. 11, the cylindrical portion 68 of the header unit 62A is inserted into the inner tube 66 as the inner tube portion of the header unit 62B. In this state, the inner tube 66 is covered with the cover 88 as the connecting portion. The claw member 70 as a holding member is provided inside the cap 90 fixed to the cover 88 and prevents the inner tube 66 from coming out of the cover 88. The claw member 70 prevents the inner ring 66 from coming out of the cover 88 when the release ring 72 provided as the release member provided inside the cap 90 is pushed to the back side of the cover 88 by the pushing member (not shown). Release the holding state.

  Further, for example, the claw member 76 provided on the cylindrical collet 74 shown in the perspective view of FIG. 12 may be used as the holding member, and the cylindrical release ring 78 may be used as the release member. The collet 74, the claw member 76, and the release ring 78 are provided on the inner wall of the connecting portion that constitutes the header unit.

  The claw member 76 is provided so as to protrude from the inner peripheral surface of the collet 74. The collet 74 has a slit 82 formed in the material axis direction of the collet 74 and having a tapered portion 80 on the side surface of the inner wall. Further, the release ring 78 is provided with a protruding member 86 that protrudes downward and has a tapered portion 84 on the outer wall side surface.

  The release ring 78 and the collet 74 are provided on the inner wall of the connecting portion constituting the header unit in a state where the protruding member 86 is inserted into the slit 82. Thus, when the release ring 78 is pushed toward the collet 74 (to the back side of the connecting portion) by the pushing member, the taper portion 84 of the projecting member 86 is pushed against the taper portion 80 of the slit 82 while sliding. As a result, the slit 82 is expanded in the projecting member 86, the collet 74 is expanded in the radial direction, and the force for pressing the claw member 76 against the outer peripheral surface of the inner tube portion inserted and connected to the connecting portion of the header unit is lost.

  Further, any number of header units 12 according to the embodiment of the present invention may be connected. The plurality of header units 12 to be coupled may have the same specification, different specifications, or the same specifications of several header units 12. The specification here means the length of the straight flow path, the presence / absence of the branch flow path, the size of the branch port (diameter of connectable tube), the position of the branch port, the number of branch ports, and the like.

  Moreover, you may use the header unit 12 of embodiment of this invention as a pipe joint which connects pipe bodies, such as water supply, hot water supply, or a pipe for drainage. Further, the header unit 12 according to the embodiment of the present invention can be applied to various connection structures for connecting tubular members.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

10 Piping header 12, 12A, 12B, 12C, 62, 62A, 62B Header unit (pipe joint)
14, 66 Inner pipe (inner pipe part)
16 Other end portion 18 Connecting portion 24 Outer resin (outer tube portion)
34 Collet (Release member)
48, 70, 76 Claw member (holding member)
54, 64 Notch (space)
72, 78 Release ring (release member)
88 Cover (connection part)

Claims (5)

In a pipe joint having an inner tube portion where the connecting portion is formed at one end portion, and an outer tube portion provided on the outer periphery of the inner tube portion by exposing the other end portion of the inner tube portion,
The connecting portion includes a holding member that holds the other end portion of the inner pipe portion of one pipe joint inserted into the connecting portion, and a release member that releases the holding state by the holding member,
With the other end of the inner pipe inserted into the connecting part of another pipe joint and held by the holding member, between the one end of the outer pipe part and the connecting part of the other pipe joint A pipe joint in which a space for operating the release member is formed.   The pipe joint according to claim 1, wherein the space is a cutout portion formed by cutting out one end portion of the outer pipe portion.   The pipe joint according to claim 2, wherein a plurality of the notches are formed along a circumferential direction of one end of the outer pipe part.   The pipe joint according to any one of claims 1 to 3, further comprising a branch flow path branched from the inner pipe portion.   A header for piping constituted by connecting a plurality of the pipe joints according to any one of claims 1 to 4.

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