JP5015679B2 - Fitting with valve and valve support for fitting with valve - Google Patents

Description

  The present invention relates to, for example, a pipe joint with a valve called a coupler and the like, and a valve support used for the pipe joint with the valve.

  2. Description of the Related Art Conventionally, pipe joints with valves called couplers or the like are known as joints of pipes used in hydraulic equipment and the like through which fluids such as water and oil flow (for example, Patent Document 1, Patent Document 2, Patent Document). 3). As shown in FIGS. 5 and 6, for example, the valve-equipped pipe joint is configured by a combination of a male joint 110 called a nose and a female joint 120 called a body.

  More specifically, the male joint 110 has a cylindrical male cylinder 11 referred to as a nose body, and the inner peripheral surface 11a of the male cylinder 11 forms a flow path L1. Similarly, the female joint 120 has a cylindrical female cylinder 21 called a body body, and the inner peripheral surface 21a of the female cylinder 21 forms a flow path L2. The male cylindrical body 11 and the female cylindrical body 21 thus configured are, for example, screwed while fitting the distal end portion 11A of the male cylindrical body 11 into the opening formed by the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21. Alternatively, they can be fixed and connected by an appropriate method such as using a connecting mechanism 70 as shown in the drawing.

  Further, the male joint 110 and the female joint 120 are provided with valves 30 called poppet valves or the like in the flow paths L1 and L2, respectively. The valve 30 includes a tapered (conical) head portion 31 called a poppet and the like, and a head portion 31 extending from the head portion 31 to the side opposite to the other cylinders 11 and 21, that is, the proximal end side. Also has a small-diameter shaft portion 32. The other cylinders 11 and 21 mean the female cylinder 21 in the valve 30 provided in the flow path L1 and the male cylinder 11 in the valve 30 provided in the flow path L2.

  Furthermore, the male joint 110 and the female joint 120 are provided with a support tool 40 of the valve 30 called a poppet guide or the like in the flow paths L1 and L2. As shown in FIGS. 7 and 8, the valve support 40 includes a first cylindrical portion 41 that is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21 and a shaft portion 32 of the valve 30 that is circumscribed. A second cylindrical portion 43 having a smaller diameter than the first cylindrical portion 41. In addition, the valve support 40 has a bridging portion 42 connected to the first cylindrical portion 41 and the second cylindrical portion 43. The bridging portion 42 is connected to the leading edge of the first cylindrical portion 41 and has a flat plate shape that crosses the opening edge 41a formed by the leading edge in the diameter direction. In addition, the bridging portion 42 is connected to the base end edge of the second cylindrical portion 43 at the center portion, and thus the width X of the bridging portion 42 can support the second cylindrical portion 43 reliably. The diameter of the second cylindrical portion 43 is substantially the same. Further, a hole having the same shape as the opening edge 43 a formed at the base end edge of the second cylindrical portion 43 is formed in the bridging portion 42, and this hole is also circumscribed to the shaft portion 32 of the valve 30. It has become.

  As shown in FIGS. 5 and 6, the base end edge of the first cylindrical portion 41 of the valve support 40 configured as described above is formed on the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. 11a and 21a are hooked on an annular hooking ring 9 fitted so that the inner peripheral portion protrudes. In addition, this latching is performed using, for example, a C-type retaining ring, a spiro lock, or the like, or using a protruding portion in which a part of the inner peripheral surfaces 11a and 21a is reduced in diameter. There are also.

  With the above-described latching, the valve support 40 is fixed so as not to move toward the proximal end with respect to the cylinders 11 and 21. On the other hand, the shaft portion 32 of the valve 30 is inserted into the second cylindrical portion 43 of the valve support 40. Therefore, the shaft portion 32 is supported by the valve support 40 so as to be movable in the axial direction.

  Further, the male joint 110 and the female joint 120 are provided with a biasing member 8 made of a coiled spring or the like in the flow paths L1 and L2. The biasing member 8 is interposed between the distal end side surface of the bridging portion 42 of the valve support 40 and the bottom surface (base end side surface) of the head portion 31, and circumscribes the second cylindrical portion 43. Accordingly, the head portion 31 is urged toward the other cylinders 11 and 21 by the urging member 8. As shown in FIG. 5, this biasing causes the flow path L <b> 1 in a state where the distal end portion 11 </ b> A of the male cylindrical body 11 is not inserted into the opening of the female cylindrical body 21 (a state in which the insertion is removed). , L2 is closed. More specifically, the inner peripheral surfaces 11a and 21a of the cylinders 11 and 21 that form the flow paths L1 and L2 are provided with reduced diameter portions 12 and 22 that protrude toward the axial center side (inward). . When the head portion 31 is urged toward the other cylinders 11 and 21 and moves to the distal end side, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. The flow paths L1 and L2 are closed by the contact.

  On the other hand, as shown in FIG. 6, in a state where the distal end portion 11 </ b> A of the male cylinder body 11 is fitted into the opening of the female cylinder body 21, both flow paths L <b> 1 and L <b> 2 are in communication. More specifically, first, in a state where the insertion is removed, as shown in FIG. 5, the distal end portion of one head portion 31 is formed of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11. Projecting from the distal end surface, the distal end portion of the other head portion 31 projects from the distal end surface of the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. Further, in the fitted state, as shown in FIG. 6, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the cylindrical body 21. The front end surface of this is abutted and positioned. Therefore, in the inserted state, both heads 31 and 31 are pressed against each other, and both the heads 31 and 31 are separated from the reduced diameter portions 21 and 22 by this pressing, so that both flow paths L1 and L2 are communicated.

The valved pipe joint 100 configured as described above is easy to connect the male joint 110 and the female joint 120 and is already widely used. However, the following problems have also been pointed out.
That is, as apparent from FIG. 7, in the conventional valve-equipped pipe joint 100, the bridging portion 42 of the valve support 40 has a large resistance, so the pressure loss of the fluid flowing through the flow paths L1 and L2 is large. On the other hand, if the width X of the bridging portion 42 is narrowed to reduce this pressure loss, the integrated strength of the first cylindrical portion 41 and the second cylindrical portion 43 cannot be maintained, and the valve 30 ( The moving direction of the shaft portion 32) may be inclined with respect to the axial direction. When the moving direction of the valve 30 is inclined, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 do not come into full contact with each other even if the valve 30 moves toward the tip side, and the flow paths L1 and L2 Will not be completely blocked. Moreover, the valve support 40 needs to be manufactured by cutting or the like, and the manufacturing cost is also increased.

  On the other hand, as a conventional valve-equipped pipe joint, there is one in which the valve support 40 is replaced with a valve support 50 shown in FIGS. The valve support 50 includes a cylindrical portion 51 that circumscribes the shaft portion 32 of the valve 30, and a circle that protrudes radially from the cylindrical portion 51, and the protruding end portion is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. In the illustrated example, there are four protrusions 52, 52... In the valve support 50 thus configured, the protruding portion 52 protrudes from the locking ring 9. By this latching, the valve support 50 is fixed to the cylinders 11 and 21 so as not to move toward the base end side. On the other hand, the shaft portion 32 of the valve 30 is inserted into the cylindrical portion 51 of the valve support 50. Therefore, the shaft portion 32 is supported by the valve support 50 so as to be movable in the axial direction.

  Further, in the case of this valve support 50, the urging member 8 is interposed between the protrusion 52 of the valve support 50 and the bottom surface (base end side surface) of the head 31 and circumscribes the cylindrical portion 51. Thereby, the head part 31 is urged | biased by the other cylinders 11 and 21 side by the urging | biasing member 8, and the function similar to the valve fitting 100 mentioned above is exhibited.

  However, as is apparent from FIG. 9, even if the valve support 50 is used, the pressure loss of the fluid flowing through the flow paths L1 and L2 is large because the protrusion 52 becomes a resistance. If the width Y of the projection 52 is reduced to reduce this pressure loss, the strength of the projection 52 cannot be maintained, and as a result, the moving direction of the valve 30 (shaft portion 32) is inclined with respect to the axial direction. The same problem as in the support tool 40 (the possibility that the flow paths L1 and L2 may not be completely blocked) occurs. Further, the support 50 needs to be manufactured by a metal sintering process or the like, and the manufacturing cost is also increased.

In addition, the members constituting the male joint 110 and the female joint 120, such as the cylinders 11 and 21 and the valve 30, have a certain degree of versatility, and have already established a production line. Exists. Therefore, for example, as shown in Patent Document 4, the pressure loss is not reduced by improving the shape of the valve itself, but the valve supports 40 and 50 are improved while using the conventional valve as it is. It is desirable to reduce pressure loss. Moreover, since the sizes of the members such as the cylinders 11 and 21 and the valve 30 are not always constant, it is desirable that the improved valve support has a structure in which the size can be easily changed.
JP-A-8-320092 JP 2004-1009044 A JP 2006-105285 A JP-A-11-201358

  A main problem to be solved by the present invention is a valve fitting having a reduced pressure loss, sufficient strength, reduced manufacturing cost, and preferably easy to change in size, and the valve fitting. It is providing the valve support tool used for.

The present invention that has solved this problem is as follows.
[Invention of Claim 1]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
A valve having a head portion and a shaft portion having a smaller diameter than the head portion extending from the head portion to the opposite side to the other tubular body, the shaft portion being fixed to the tubular body, and the shaft portion. And a biasing member that is interposed between the valve support and the head, and biases the head toward the other cylindrical body.
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, the both heads are separated from the reduced diameter portion by the pressing, and the both flow passages communicate with each other.
The valve support is configured to draw an arc having a central angle of 270 to 360 ° along the peripheral surface of the shaft portion and surround the shaft portion, and the inner peripheral surface from one end portion of the shaft passage portion. a rack passing portion extending to, made from a member having a base portion to draw a central angle 180 to 360 ° of arc along the inner peripheral surface from the tip of the rack passing section,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve-equipped fitting.

[Invention of Claim 2]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
The valve support that is fixed to the cylinder in a state where the biasing member is interposed between the head and the head and that supports the shaft portion so as to be movable in the axial direction.
The valve support is configured to draw an arc having a central angle of 270 to 360 ° along the peripheral surface of the shaft portion and surround the shaft portion, and the inner peripheral surface from one end portion of the shaft passage portion. a rack passing portion extending to, made from a member having a base portion to draw a central angle 180 to 360 ° of arc along the inner peripheral surface from the tip of the rack passing section,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve support for a valve-equipped pipe joint.

[Invention of Claim 3]
The valve support for a valve-equipped pipe joint according to claim 2, wherein the valve support is formed into a shape in which a plate material is bent to have the shaft passing portion, the bridge portion, and the base portion .

  According to the present invention, a valve joint having a valve with a reduced pressure loss, a sufficient strength, and a reduced manufacturing cost, and a valve support used for the valve joint.

  Next, an embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 of the present embodiment is configured by substantially the same members as the conventional valve-equipped pipe joint 100 (the same members are denoted by the same reference numerals). ), Except that the conventional valve supports 40 and 50 are changed to the support A of the present embodiment. Therefore, in the following, first, only the supplementary explanation that has not been described above will be given to the valve-equipped pipe joint 1 in general, and then the support according to this embodiment will be described in detail.

(Fitting with valve)
As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 according to the present embodiment is configured by a combination of a male joint 2 called a nose and a female joint 3 called a body. The male joint 2 and the female joint 3 correspond to the conventional male joint 110 or female joint 120 described above.

  The connection method of the male joint 2 and the female joint 3 is not specifically limited, For example, the male cylinder body 11 and the female cylinder body 21 can be fixed, for example, by screwing. However, in the present embodiment, from the viewpoint of easy connection, a method of fixing and connecting using the connecting mechanism 70 is adopted. The connecting mechanism 70 has a connecting cylinder 71 called a collar or the like provided coaxially and circumscribed at the tip of the female cylinder 21. The connecting cylinder 71 is thick at the distal end and thin at the proximal end, and a biasing member 72 made of a coiled spring or the like is provided between the inner peripheral surface of the thin portion and the outer peripheral surface of the female cylinder 21. Intervened. The urging member 72 is engaged with a step portion between the thick portion and the thin portion of the connecting cylinder 71 and urges the connecting cylinder 71 toward the distal end side. However, a projecting member 73 composed of an annular ring or a plurality of ball members is fitted on the outer peripheral surface of the distal end portion of the female cylinder 21 so as to protrude from the outer peripheral surface. Therefore, when the thick part of the connecting cylinder 71 engages with the protruding member 73, the movement of the connecting cylinder 71 to the front end side due to the biasing is limited, and this state is usually in this state. On the other hand, the coupling mechanism 70 has a ball member 75, and this ball member 75 is disposed in a hole 76 formed at the tip of the female cylinder 21. The ball member 75 is usually covered with the inner peripheral surface of the thick portion of the connecting cylinder 71 and is prevented from moving outward. Further, the diameter of the inner side of the hole 76 is smaller than the diameter of the ball member 75, and the ball member 75 is immovable while protruding from the inner peripheral surface 21 </ b> A of the female cylinder 21. In this embodiment, a plurality of ball members 75 and holes 76 are provided at appropriate intervals in the circumferential direction of the female cylinder 21.

  When the male joint 2 and the female joint 3 are connected using the connecting mechanism 70 as described above, first, the connecting cylinder 71 is moved (slid) to the proximal end side, and the ball member 75 is moved outward. It can be moved. Next, in this state, the distal end portion 11 </ b> A of the male cylindrical body 11 is fitted into the opening formed on the inner peripheral surface 21 </ b> A of the distal end portion of the female cylindrical body 21. At the time of this insertion, since the ball member 75 can move outward, the ball member 75 does not hinder the insertion. By this insertion, as shown in FIG. 2, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. When the front end surface comes into contact with the front end surface, the ball member 75 is fitted into a recess 77 formed in the front end portion 11A of the male cylindrical body 11. In this state, if the movement of the connecting cylinder 71 to the proximal end is stopped, the connecting cylinder 71 is moved to the distal end side by the urging member 72, covers the ball member 75, and the outside of the ball member 75. The movement to the direction is made impossible. In this way, the ball member 75 and the recess 77 are engaged with each other, the male joint 2 and the female joint 3 are fixed, and the connection is completed.

  By the way, in this embodiment, an annular groove is formed along the circumferential direction on the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21, and a sealing material 4 made of an O-ring or the like is embedded in the annular groove. . Thereby, in the inserted state, the inner peripheral surface of the sealing material 4 and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 abut, and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 and the inner end portion of the female cylindrical body 21 are in contact. The fluid is prevented from leaking from between the peripheral surface 21A. On the other hand, in the state where the insertion is removed, as shown in FIG. 1, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. It is blocked. In the present embodiment, an annular groove is formed in the tapered surface of the head portion 31 along the circumferential direction in order to make the flow paths L1 and L2 more completely closed, and the sealing material 5 is formed in the annular groove. Is embedded. The sealing material 5 can be formed by, for example, an O-ring or by baking a rubber material as disclosed in JP-A-2006-105285.

  On the other hand, in this embodiment, as shown in an enlarged view in FIG. 2, the rectifying ring 6 can be provided on the proximal end side of the head 31. The rectifying ring 6 has a bottom surface having a conical shape having substantially the same diameter as the bottom surface of the head portion 31, and a through hole is formed in the axial center portion. For example, when the rectifying ring 6 is disposed in the flow path L2, the bottom surface is oriented to face the bottom surface of the head portion 31, and the shaft portion 32 and the biasing member of the valve 30 pass through the through-hole formed in the shaft center portion. Let 8 pass. With the arrangement of the rectifying ring 6, turbulent flow or the like does not occur on the proximal end side of the head portion 31, so that pressure loss is reduced. In disposing the rectifying ring 6, for example, JP-A-8-320092 can be referred to.

(Valve support)
Next, the valve support A of the present embodiment will be described. In addition, the valve support A can be provided with the same form in both the flow path L1 and the flow path L2, and the case where it is provided in the flow path L1 will be described below as an example.

  As shown in FIGS. 3 and 4, the valve support A of the present embodiment is mainly configured by a shaft passing part A <b> 1, a spanning part A <b> 2 and a base part A <b> 3. The shaft-passing portion A1 has a shape in which an arc is drawn along the peripheral surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, the shaft portion 32 has a substantially circular cross section. In the form, it has an arc shape. In this way, the shaft passing portion A1 is in a state of surrounding the shaft portion 32, whereby the shaft portion 32 is supported so as to be movable in the axial direction. On the other hand, the bridge portion A2 extends from the one end portion A1a of the shaft passing portion A1 to the inner peripheral surface 11a of the cylindrical body 11, and is particularly linear in this embodiment. Further, the base A3 has a shape that draws an arc along the inner peripheral surface 11a from the distal end A2a of the transfer portion A2, and in the present embodiment in which the inner peripheral surface 11a has a substantially circular cross section, Has been. In this way, the connecting portion A2 is connected to the shaft portion A1 and the base portion A3, whereby the force received by the shaft portion A1 from the shaft portion 32 is transmitted to the base portion A3 and further to the inner peripheral surface 11a. Therefore, the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a (if the force is not transmitted directly, the inner peripheral surface 11a has no movement even if the moving direction of the shaft portion 32 is inclined with respect to the axial direction). There is a possibility that the movement in the tilted state will not be resolved without being transmitted.) It is preferable that the transfer portion A2 extends in the radial direction of the flow path L1, and particularly extends linearly. When the transfer portion A2 is linear, there is an effect that the material cost is reduced and an effect that the pressure loss is further reduced. Further, from the viewpoint of the stability of the valve support A, it is preferable that the length of the base A3 is long. However, when the length of the base A3 is increased, the valve support A is stabilized, but on the other hand, the material cost and the pressure loss are also increased. Therefore, from the viewpoint of balance, it is preferable that the base A3 has an arc shape that draws an arc having a central angle of 180 to 360 °, for example. Similarly, from the viewpoint of stable support of the shaft portion 32, it is preferable that the shaft passing portion A1 also has a longer length. However, when the length of the shaft passing portion A1 is increased, the shaft portion 32 is stabilized, but on the other hand, the material cost and the pressure loss are also increased. Therefore, from the viewpoint of these balances, it is preferable that the shaft-passing portion A1 has, for example, an arc shape that draws an arc having a central angle of 270 to 360 °.

  On the other hand, in the valve support A of the present embodiment, the shaft passing part A1, the transfer part A2, and the base part A3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. Thereby, as apparent from FIG. 3, the pressure loss of the fluid passing through the flow path L1 is significantly reduced. In addition, the valve support A can be manufactured by bending a flat plate or pipe, cutting, or the like, and no welding or the like is required, thereby reducing manufacturing costs. In addition, since the valve support A having a different size can be obtained simply by changing the position where bending, bending, bending, or the like is performed, the size can be easily changed. Further, the valve support A can be supported only by lengthening the length V of the valve support A (meaning the length based on the axial direction of the shaft portion 32, that is, the length based on the flow direction of the flow path L1). Strength of the tool A (This strength includes, for example, the integrated strength of the shaft-passing portion A1, the spanning portion A2, and the base portion A3. In order to increase this strength, the conventional valve support 40 is not cross-linked. The width X of the portion 42 is widened, thereby increasing the pressure loss.) And stability (for example, the stability with respect to the inner peripheral surface 11a and the point where the shaft portion 32 can be stably supported). Can be improved as appropriate. Of course, the length V of the valve support A is also influenced by the position of the retaining ring 9. In the aforementioned valve-equipped pipe joint 1, the retaining ring 9 is located on the distal end side relative to the conventional valve-equipped pipe joint 100, and when it is located on the proximal end side, the valve support A Increasing the length V is sufficient.

  In addition, in this invention, plate shape is not limited to the state spread flatly, ie, it is flat shape, For example, the state bent or bent in the middle is also included.

[Others]
In the present invention, the material of the valve support A is not particularly limited, and for example, SUS303, 304 or the like can be used.

  The present invention is applicable, for example, as a valve-equipped pipe joint called a coupler and a valve support used for the valve-equipped pipe joint.

It is a half sectional view showing the state before connection of the pipe joint with valve concerning an embodiment. It is a half sectional view showing the state after connection of the pipe joint with valve concerning an embodiment. It is a top view which shows the valve support tool which concerns on embodiment. It is a front view which shows the valve support tool which concerns on embodiment. It is a half sectional view showing the state before connection of the pipe joint with valve concerning the conventional form. It is a half sectional view showing the state after connection of the pipe joint with valve concerning the conventional form. It is a top view which shows the valve support tool which concerns on the conventional form. It is a half sectional view showing a valve support according to a conventional form. It is a top view which shows the valve support tool which concerns on another conventional form. It is a half sectional view showing a conventional valve support according to another form.

  DESCRIPTION OF SYMBOLS 1,100 ... Pipe joint with a valve, 2,110 ... Male joint, 3,120 ... Female joint, 4,5 ... Sealing material, 6 ... Rectification ring, 8 ... Biasing member, 9 ... Stop ring, 11 ... Male cylindrical body, 12, 22 ... Reduced diameter part, 21 ... Female cylindrical body, 30 ... Valve, 31 ... Head, 32 ... Shaft part, 40, 50 ... Valve support, 41 ... First cylindrical part, 42 ... Cross-linking part, 43 ... second cylindrical part, 51 ... cylindrical part, 52 ... projecting part, 70 ... connecting mechanism, 71 ... connecting cylindrical body, 72 ... biasing member, 73 ... projecting member, 75 ... ball member, 76 ... A hole, 77 ... a recessed part, A ... a valve support, A1 ... a shaft passing part, A2 ... a bridge part, A3 ... a base, L1, L2 ... a flow path

Claims (3)

A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
A valve having a head portion and a shaft portion having a smaller diameter than the head portion extending from the head portion to the opposite side to the other tubular body, the shaft portion being fixed to the tubular body, and the shaft portion. And a biasing member that is interposed between the valve support and the head, and biases the head toward the other cylindrical body.
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, the both heads are separated from the reduced diameter portion by the pressing, and the both flow passages communicate with each other.
The valve support is configured to draw an arc having a central angle of 270 to 360 ° along the peripheral surface of the shaft portion and surround the shaft portion, and the inner peripheral surface from one end portion of the shaft passage portion. a rack passing portion extending to, made from a member having a base portion to draw a central angle 180 to 360 ° of arc along the inner peripheral surface from the tip of the rack passing section,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve-equipped fitting. A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
The valve support that is fixed to the cylinder in a state where the biasing member is interposed between the head and the head and that supports the shaft portion so as to be movable in the axial direction.
The valve support is configured to draw an arc having a central angle of 270 to 360 ° along the peripheral surface of the shaft portion and surround the shaft portion, and the inner peripheral surface from one end portion of the shaft passage portion. a rack passing portion extending to, made from a member having a base portion to draw a central angle 180 to 360 ° of arc along the inner peripheral surface from the tip of the rack passing section,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve support for a valve-equipped pipe joint. The valve support for a valve-equipped pipe joint according to claim 2, wherein the valve support is formed into a shape in which a plate material is bent to have the shaft passing portion, the bridge portion, and the base portion .

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