JP2019044797A - Valve cartridge and pipe joint - Google Patents

Abstract

To provide a simple method capable of handling a valve cartridge as a single unit.SOLUTION: In a valve cartridge which is integrated in a channel region of a fluid channel, a valve main body is accommodated in an intra-cartridge channel of a cylindrical cartridge main body which is inserted in the channel region, and the valve main body is energized towards a seal part of the intra-cartridge channel by a coil spring. In addition, the valve cartridge comprises a pedestal component which is positioned at an opposite side of the seal part with the coil spring interposed therebetween and receives the coil spring in the intra-cartridge channel. The pedestal component includes an engaged part to be engaged with an engaging part for pedestal component engagement that the cartridge main body includes in the intra-cartridge channel, and is integrated with the cartridge main body by engaging the engaged part with the engaging part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a valve cartridge and a pipe joint.

  Various valve cartridges have been proposed that open and close a flow path of a fluid such as a gas such as liquid or fuel vapor according to the fluid pressure (for example, Patent Document 1). In this valve cartridge, a valve main body and a spring urging the valve main body are accommodated in a cylindrical cartridge main body forming a flow path, and the entire cartridge main body is incorporated in the flow path of the tubular body.

JP 2011-94805 A

  In the valve cartridge proposed in the above-mentioned patent document, since the cartridge body is a two-part product of a cylindrical body, when assembling the pipe body into the flow path, each part must be assembled sequentially, and the assemblability is lacking. . The assembling property is enhanced by enabling handling as a single valve cartridge in a state in which the valve main body and the coil spring are accommodated. However, in order to enable handling as a single valve cartridge containing the valve body and coil spring, it is necessary to bond or weld the two-part cartridge body while maintaining the positioning. It will be complicated. For these reasons, it has been demanded that the valve cartridge can be easily handled as a single product.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to one aspect of the present invention, a valve cartridge is provided. This valve cartridge is a valve cartridge that is incorporated in the flow path region of the fluid flow path, and is inserted into the flow path area to form an in-cartridge flow path for the fluid that flows through the fluid flow path. A cylindrical cartridge main body having a seal portion surrounding a part of the path around the flow path axis, and accommodated in the cartridge internal flow path of the cartridge main body, contacting the seal portion and closing the cartridge internal flow path A valve main body, a coil spring housed in the cartridge flow path of the cartridge main body and biasing the valve main body toward the seal portion, and positioned on the opposite side of the seal portion across the coil spring A pedestal component that receives the coil spring in the flow path in the cartridge and allows the fluid to flow therethrough. The pedestal component has an engaged portion that engages with an engaging portion for engaging the pedestal component that the cartridge body has in the flow path in the cartridge, and the engagement of the engaged portion with the engaging portion. Thus, the cartridge main body is integrated.

  In order to handle the valve cartridge as a single product in this type of valve cartridge, the valve body and the coil spring are accommodated in the flow path in the cartridge, and the base part that receives the coil spring is then engaged with the cartridge body. It only needs to be integrated. Therefore, according to the valve cartridge of this embodiment, it is possible to easily and easily handle the valve cartridge as a single product.

(2) According to another aspect of the present invention, a pipe joint is provided. The pipe joint is a pipe joint having a fluid flow path in a pipe joint main body portion and incorporating a valve cartridge in a flow path area of the fluid flow path, and the valve cartridge is inserted into the flow path area. A cylindrical cartridge body having a seal portion that forms a flow path in the cartridge of the fluid flowing through the fluid flow path and surrounds a part of the flow path in the cartridge around the flow path axis, and the cartridge body A valve main body that is accommodated in the flow path in the cartridge and closes the flow path in the cartridge by contacting the seal portion, and is accommodated in the flow path in the cartridge of the cartridge main body, and the valve main body is attached to the seal portion. A coil spring that is energized, and the coil spring that is positioned on the opposite side of the seal portion with the coil spring sandwiched between the coil spring and the flow path in the cartridge. A pedestal part capable of receiving the fluid and allowing the fluid to flow, and the pedestal part includes an engaged part that engages an engaging part for engaging the pedestal part that the cartridge main body has in the flow path in the cartridge. And is integrated with the cartridge body by engagement of the engaged portion with the engaging portion.

  In this form of the pipe joint, the valve cartridge incorporated in the flow passage area of the fluid passage can be handled as a single valve cartridge in a state before the assembly. Therefore, according to the pipe joint of this embodiment, it is possible to simplify and facilitate the incorporation of the valve cartridge into the flow channel region of the fluid flow channel.

(3) In the pipe joint of the above aspect, one end side of the fluid flow path is in an open state, and the valve cartridge is incorporated into the flow path area from the pedestal component side through the opening of the fluid flow path. The joint main body includes a merging passage tube portion that forms a merging passage where the fluid passages merge on the pedestal component side of the incorporated valve cartridge, and the pedestal of the incorporated valve cartridge. You may make it have the branch channel tube part which forms the branch channel branched from the said fluid channel on the opposite side of components, and the cover body which obstruct | occludes the said opening of the said fluid channel. In this way, a pipe joint that allows the fluid flowing from the branch channel to the fluid channel can be easily provided by incorporating the valve cartridge into the channel region of the fluid channel and closing the opening with the lid.

(4) In the pipe joint of the above aspect, the pipe joint main body portion has a pipe joint side engaged portion that engages with a cartridge engaging portion of the valve cartridge, and the cartridge engaging portion of the valve cartridge May be engaged with the pipe joint side engaged portion in a state in which the valve cartridge is incorporated in the flow path region. If it carries out like this, the pipe joint which integrated the valve cartridge into the pipe joint main-body part can be provided easily.

(5) In the pipe joint according to the above aspect, the pipe joint main body portion includes a branch flow channel body portion that forms a branch flow channel branched from the fluid flow channel, and the valve cartridge includes the branch flow channel as described above. As the flow channel region, the branch channel may be incorporated so that the side of the pedestal component is the side of the fluid flow channel. In this way, a pipe joint that allows the fluid flowing from the branch channel to the fluid channel to flow in the branch channel can be provided through the incorporation of the valve cartridge into the branch channel.

It is explanatory drawing which shows roughly the perspective view before the assembly | attachment of the valve cartridge of 1st Embodiment, and an assembly state. It is explanatory drawing which shows the vertical cross section of the valve cartridge in alignment with line 2-2 in FIG. 1 as an integration state to a pipe joint. It is explanatory drawing which shows a pedestal part in front view from the A direction in FIG. FIG. 2 is an explanatory view showing a pedestal part as seen from the direction A in FIG. 1. FIG. 5 is an explanatory view showing the pedestal part in a sectional view along line 5-5 in FIG. 4. It is explanatory drawing explaining the fuel tank system which mounts the pipe joint of 2nd Embodiment in the valve apparatus for fuel tanks. It is explanatory drawing which shows roughly the perspective view with a pipe joint before the assembly | attachment of the valve cartridge of 2nd Embodiment, and an assembly state. It is explanatory drawing which shows the vertical cross section of the valve cartridge in alignment with line 8-8 in FIG. 7 as an assembly state to a pipe joint. It is explanatory drawing which shows the horizontal cross section of the valve cartridge in alignment with the 9-9 line in FIG. 7 as an integration state to a pipe joint. It is explanatory drawing which fractures | ruptures the connection site | part periphery of a pipe joint main-body part and a confluence | merging flow path pipe-body part, and shows the mode inside a pipe joint main-body part. It is explanatory drawing which shows roughly the perspective view before the assembly | attachment of the valve cartridge of 3rd Embodiment, and an assembly state. It is explanatory drawing which shows the vertical cross section of the valve cartridge in alignment with the 12-12 line | wire in FIG. 11 as an integration state to a pipe joint. It is explanatory drawing which shows the horizontal cross section of the valve cartridge in alignment with the 13-13 line | wire in FIG. It is explanatory drawing which shows the horizontal joint view of the pipe joint of 4th Embodiment in the state which assembled | attached the valve cartridge similarly to FIG.

(1) 1st Embodiment: Valve cartridge single-piece | unit structure FIG. 1: is explanatory drawing which shows schematically the perspective view before the assembly | attachment of the valve cartridge 10 of 1st Embodiment, and an assembly state. FIG. 2 is an explanatory view showing a vertical cross section of the valve cartridge 10 taken along line 2-2 in FIG. In the drawing showing the cross section, the valve cartridge constituent material is appropriately shown as an end view in view of the ease of illustration of the constituent members.

  The valve cartridge 10 is used to turn on and off the gas flow in the gas flow path 101 of the pipe joint 100 shown in FIG. 2, and is built into the cartridge built-in flow area 102 of the gas flow path 101 that functions as a fluid flow path. . The valve cartridge 10 includes a cylindrical cartridge body 20, a valve body 30, a coil spring 40, and a pedestal component 50.

  The cartridge body 20 is a cylindrical body formed from a polyacetal (POM) having excellent wear resistance and mechanical characteristics and having high temperature stability, and is inserted into the built-in flow path region 102 of the pipe joint 100. Is done. Since this cartridge main body 20 is a cylindrical body, the inside thereof is used as an in-cartridge flow path 22 for a fluid (in this embodiment, fuel vapor) that flows through the gas flow path 101 (see FIG. 2) of the pipe joint 100. A part of the cartridge internal flow path 22 is surrounded by a seal portion 24 around the flow path axis. Further, the cartridge body 20 includes a notch 25 and an engagement hole 26 on one end side of the cylindrical body, and an engagement curved piece portion 27 on the other end side. As shown in FIG. 2, when the valve cartridge 10 is assembled into the pipe joint 100, the engagement curved piece portion 27 enters the engagement recess 103 of the pipe joint 100, and serves as a positioning / detachment prevention for the valve cartridge 10. Function. The notch 25 and the engagement hole 26 will be described later.

  The valve body 30 is a cylindrical body formed from polyacetal (POM) in a cylindrical shape, and one end of the cylindrical body is opened and the other end is closed by a tapered seal wall portion 32. The valve body 30 includes a small-diameter through-hole 33 at the top of the seal wall portion 32 and is accommodated in the cartridge flow path 22 so that the seal wall portion 32 is located on the seal portion 24 side of the cartridge body 20. The The valve body 30 closes the in-cartridge flow path 22 by contacting the seal wall portion 32 with the seal portion 24. The valve body 30 allows a small amount of fuel vapor to pass through the through-hole 33 even in a state where the cartridge flow path 22 is closed by the seal wall portion 32.

  The coil spring 40 is formed of a stainless steel wire, is located inside the valve main body 30 and is accommodated in the cartridge flow path 22 of the cartridge main body 20, and biases the valve main body 30 toward the seal portion 24. The coil spring 40 is received by the pedestal component 50 in the cartridge internal flow path 22. The pedestal component 50 is a molded product made of polyacetal (POM), and is assembled to the cartridge body 20 so as to face the seal portion 24 with the coil spring 40 interposed therebetween.

  FIG. 3 is an explanatory view showing the pedestal component 50 as viewed from the A direction in FIG. FIG. 4 is an explanatory view showing the pedestal component 50 as seen from the direction A in FIG. FIG. 5 is an explanatory view showing the pedestal component 50 in a cross-sectional view along line 5-5 in FIG. As shown in these drawings, the pedestal component 50 has a ceiling 51 and a bottom wall 52 connected to each other by side walls 53 facing each other so as to form a so-called two-face width-like outer shape. Part 54. The pedestal component 50 receives the coil spring 40 at the ceiling 51 so that the top 54 enters the coil spring 40. The pedestal component 50 has a thick claw portion 56 at the tip of a thin leaf piece 55 protruding between the bottom wall portion 52 and the side wall portion 53, and the region surrounded by the side wall portion 53 and the thin leaf piece 55 is provided inside. Let it be a flow path 57. The internal flow path 57 is opened between the ceiling portion 51 and the claw portion 56 on the ceiling portion 51 side, and is also opened on the bottom wall portion 52 side. Therefore, the pedestal component 50 enables fuel vapor to flow from the ceiling 51 side to the bottom wall 52 side. In addition, the pedestal component 50 allows fuel vapor to flow even in the gap between the cartridge internal flow path 22 and the side wall portion 53 in a state where the pedestal component 50 is assembled to the cartridge body 20. The claw portion 56 functions as an engaged portion that engages with an engaging hole 26 that is an engaging portion for engaging a pedestal component that the cartridge body 20 has in the cartridge flow path 22.

(2) First Embodiment: Assembly of Valve Cartridge When assembling the valve cartridge 10 having the above-described parts, as shown by the white arrow in FIG. From the side, the valve body 30, the coil spring 40, and the pedestal component 50 are sequentially assembled. 2, the valve body 30 is accommodated together with the coil spring 40 in a state where the valve body 30 is biased by the coil spring 40 so as to contact the seal wall portion 32 with the seal portion 24 as shown in FIG. The coil spring 40 is received by the pedestal component 50. The pedestal component 50 is integrated with the cartridge body 20 by the engagement of the claw portion 56 with the engagement hole 26 of the cartridge body 20 with the bottom wall portion 52 inserted into the notch 25. Thereby, the valve cartridge 10 is obtained as a single valve cartridge.

(3) First Embodiment: Valve Cartridge Integration into Pipe Fitting When assembling the valve cartridge 10 into the pipe joint 100, the valve cartridge 10 as a single valve cartridge is installed on the side of the pedestal component 50 as shown in FIG. To the built-in flow path region 102 in the gas flow path 101 of the pipe joint 100. This insertion is performed until the engagement curved piece 27 of the valve cartridge 10 enters the engagement recess 103 of the pipe joint 100, and the insertion of the valve cartridge 10 into the pipe joint 100 is completed by this insertion.

  When the pressure of the fuel vapor flowing into the gas flow path 101 of the pipe joint 100 reaches a predetermined flow path opening pressure, the built-in valve cartridge 10 receives this gas pressure and causes the valve body 30 to be urged by the coil spring 40. On the contrary, it is separated from the seal portion 24, and the gas flow path 101, specifically, the cartridge internal flow path 22 is opened. On the other hand, when the pressure of the fuel vapor flowing into the gas passage 101 of the pipe joint 100 is lower than the prescribed passage opening pressure, the valve cartridge 10 causes the valve body 30 to contact the seal portion 24 by the coil spring 40. Although the flow path is closed, a small amount of fuel vapor is passed through the gas flow path 101 from the through hole 33 provided in the valve body 30.

(4) First Embodiment: Effect of Valve Cartridge According to the valve cartridge 10 of the first embodiment described above, in order to handle the valve cartridge as a single product, It is only necessary to accommodate the valve body 30 and the coil spring 40 and to engage and integrate the base part 50 into the cartridge body 20 thereafter. Therefore, according to the valve cartridge 10 of the first embodiment, it is possible to easily and easily handle the valve cartridge as a single product.

  In the pipe joint 100 using the valve cartridge 10 of the first embodiment, the valve cartridge 10 incorporated in the incorporation flow path region 102 in the gas flow path 101 can be handled as a single valve cartridge before being assembled. Therefore, according to the pipe joint 100 using the valve cartridge 10 of the first embodiment, it is possible to simplify and facilitate the incorporation of the valve cartridge 10 into the built-in flow path region 102. Moreover, since the seal | sticker test | inspection in the valve cartridge 10 can be performed before the incorporation into the pipe joint 100, the inspection process can be simplified.

(5) Second Embodiment: Schematic Configuration of Fuel Tank System FIG. 6 is an explanatory diagram for explaining a fuel tank system FS in which the pipe joint 100A of the second embodiment is mounted on a fuel tank valve device. The fuel tank system FS includes four so-called out-tank rollover valves FCV1 to FCV4 and a full tank regulating valve FFV, which are attached to the upper wall of the fuel tank FT into which fuel flows from the inlet pipe IP, and the fuel tank FT. A pipe joint 100 </ b> A and a canister CN. The rollover valves FCV1 to FCV4 are arranged at the corners of the ceiling wall of the fuel tank FT so as to ensure ventilation to the outside even when the vehicle is inclined. The rollover valves FCV1 to FCV4 open and close the passage connected to the outside by raising and lowering the float as the fuel level in the fuel tank FT fluctuates, thereby venting the outside of the fuel tank FT. This ensures fuel flow and prevents fuel from flowing out. The full tank regulating valve FFV is a valve that is closed when the fuel tank FT reaches a predetermined fuel liquid level during refueling. The pipe joint 100A is connected to the full tank restriction valve FFV by the pipe P1, and is connected to the canister CN by the pipe P2, and guides the fuel vapor in the fuel tank FT from the full tank restriction valve FFV to the canister CN. The pipe joint 100A is connected to four rollover valves FCV1 to FCV4 by pipes P3 to P6, and the fuel vapor from each of the rollover valves FCV1 to FCV4 is set to its pressure by the accommodated later-described valve cartridge 10A. In response, it leads to the canister CN.

(6) Second Embodiment: Configuration of Single Valve Cartridge FIG. 7 is an explanatory diagram schematically showing a perspective view of the valve cartridge 10A according to the second embodiment before assembly and the assembled state together with the pipe joint 100A. FIG. 8 is an explanatory view showing a vertical cross-section of the valve cartridge 10A taken along line 8-8 in FIG. 7 as being assembled into the pipe joint 100A. FIG. 9 is an explanatory view showing a horizontal cross section of the valve cartridge 10A taken along the line 9-9 in FIG. 7 as being assembled into the pipe joint 100A. In the following description, the same reference numerals used for the valve cartridge 10 are used as they are for structural members that are similar in shape and function to the valve cartridge 10 of the first embodiment.

  The valve cartridge 10A includes the same valve main body 30 as the valve cartridge 10 of the first embodiment, a coil spring 40, and a pedestal component 50. In the cartridge main body 20A that is an assembly part of these, the valve cartridge 10A of the first embodiment is provided. Different from the cartridge 10.

  Similar to the first embodiment, the cartridge body 20A is a cylindrical body formed from polyacetal (POM) in a cylindrical shape, and encloses a part of the flow path 22 in the cartridge around the flow path axis, A notch 25 into which the bottom wall portion 52 of the pedestal component 50 enters and an engagement hole 26 with which the claw portion 56 of the pedestal component 50 engages. The cartridge main body 20A includes a branch pipe-corresponding through portion 21. This branch pipe-corresponding through portion 21 is formed from the pipe joint main body 110 of the pipe joint 100A when the valve cartridge 10A is installed in the built-in flow passage area 102 in the gas flow passage 101 of the pipe joint main body 110 of the pipe joint 100A. It faces the branch flow path 114r (see FIG. 9) of the branch port 114 that branches and extends. The branch port 114 corresponds to a branch flow channel body portion that forms a branch flow channel 114r branched from the gas flow channel 101 on the opposite side of the pedestal component 50 of the valve cartridge 10A incorporated in the built-in flow channel region 102. Further, the cartridge main body 20 </ b> A has a cartridge engaging portion 28 and a stopper portion 29 on the side of the notch 25. The cartridge engaging portion 28 is involved in the engagement of the valve cartridge 10A with the pipe fitting main body 110, and the stopper portion 29 is involved in the axial positioning of the valve cartridge 10A, but will be described later in association with the configuration of the pipe fitting 100A. To do.

(7) Second Embodiment: Valve Cartridge Assembly The assembly of the valve cartridge 10A including the above-described components is the same as that of the first embodiment, and the cartridge body flow path 22 of the cartridge main body 20A is connected to the cartridge 25 from the notch 25 side. The valve body 30, the coil spring 40, and the pedestal component 50 are sequentially incorporated. As shown in FIGS. 8 and 9, the coil main body 30 is biased by the coil spring 40 so that the valve body 30 is brought into contact with the seal wall portion 32 and the seal portion 24 as shown in FIGS. 8 and 9. 40 and the coil spring 40 is received by the pedestal component 50. Similar to the first embodiment, this pedestal component 50 is integrated with the cartridge main body 20A by engaging the claw portion 56 with the engagement hole 26 of the cartridge main body 20 with the bottom wall 52 inserted into the notch 25. It becomes. As a result, the valve cartridge 10A is obtained as a single valve cartridge.

(8) Second Embodiment: Valve Cartridge Assembly into Pipe Fitting When assembling the valve cartridge 10A into the pipe joint 100A, the valve cartridge 10A as a single valve cartridge is combined with a seal ring 130 as shown in FIG. It inserts into the built-in flow path area 102 of the gas flow path 101 of the pipe joint 100A from the base component 50 side. As shown in FIG. 9, in the pipe joint 100 </ b> A of the second embodiment, one end side of the gas flow path 101 is in an open state, and thus the valve cartridge 10 </ b> A is inserted and inserted from the opening of the gas flow path 101.

  FIG. 10 is an explanatory view showing the inside of the pipe joint main body 110 by breaking the vicinity of the connecting portion of the pipe joint main body 110 and the merging channel pipe body 112. As shown in FIGS. 10 and 9, the merging flow channel body portion 112 forms a merging flow channel 112 r that merges with the gas flow channel 101 of the pipe fitting main body portion 110, and the pipe fitting main body portion 110 The valve cartridge 10A has a fitting side engaged portion 113 that engages with the cartridge engaging portion 28 (see FIG. 7) of the cartridge main body 20A at the joining portion of the passage 101 and the joining flow passage 112r.

  The pipe joint side engaged portion 113 protrudes from the peripheral wall of the gas flow path 101 in the pipe joint main body 110 and is supported by bridges 113b at both ends thereof. The cartridge engaging portion 28 has a width that enters between the bridges 113b facing each other. The cartridge engagement portion 28 gets over the fitting-side engaged portion 113 as the valve cartridge 10A is inserted into the gas flow path 101, and this fitting-side covering Engage with the engaging portion 113. That is, the cartridge engaging portion 28 is engaged with the pipe joint side engaged portion 113 in a state where the valve cartridge 10A is incorporated in the incorporating flow path region 102 of the gas flow path 101. Further, the pipe joint main body 110 has receiving seats 112 s on both sides of the pipe joint side engaged portion 113, and the seal ring 130 is deformed / dropped due to excessive incorporation of the valve cartridge 10 </ b> A into the gas flow path 101. To prevent. The engagement of the cartridge engaging portion 28 and the pipe joint side engaged portion 113 completes the incorporation of the valve cartridge 10A into the pipe joint main body 110 in the pipe joint 100A. Thereafter, the lid 120 is attached to the flange portion 115 at the open end of the gas flow path 101 in the pipe joint main body 110, the opening of the gas flow path 101 is closed, and the pipe joint 100A in which the valve cartridge 10A has been incorporated and accommodated. Is obtained. The lid 120 is integrated with the pipe joint main body 110 by bonding or heat welding.

  In the incorporated valve cartridge 10A, when the pressure of the fuel vapor flowing into the gas flow path 101 of the pipe joint 100A from any one of the branch flow paths 114r via the pipes P3 to P6 (see FIG. 6) becomes the specified flow path opening pressure. In response to this gas pressure, the valve body 30 is separated from the seal portion 24 against the urging force of the coil spring 40, and the gas flow path 101, specifically, the in-cartridge flow path 22 is opened. As a result, the valve cartridge 10A sends the fuel vapor flowing from one of the branch flow paths 114r to the canister CN via the merge flow path 112r of the merge flow path tube body part 112. On the other hand, when the pressure of the fuel vapor flowing into the gas flow path 101 of the pipe joint 100A from any one of the branch flow paths 114r is lower than the predetermined flow path opening pressure, the valve cartridge 10A is moved by the coil spring 40 to the valve main body 30. The seal portion 24 is contacted to close the flow path, but a small amount of fuel vapor is passed through the gas flow path 101 from the through hole 33 provided in the valve body 30.

(9) Second Embodiment: Effect of Valve Cartridge The valve cartridge 10A of the second embodiment described above can be handled as a single valve cartridge simply and easily as in the first embodiment. .

  Since the pipe joint 100A including the valve cartridge 10A according to the second embodiment described above can be handled as a single valve cartridge in a state before the assembly, it is easy to incorporate the valve cartridge 10 into the assembly flow path region 102. And facilitation can be achieved.

  According to the pipe joint 100 </ b> A described above, the pipe joint that allows the fuel vapor flowing into the gas flow path 101 from each branch flow path 114 r to flow into the canister CN is incorporated into the gas flow path 101 in the pipe joint main body 110. This can be easily provided by incorporating the valve cartridge 10 </ b> A into the flow channel region 102 and closing the opening of the gas flow channel 101 with the lid 120.

  In the pipe joint 100A described above, the cartridge engagement portion 28 of the valve cartridge 10A is engaged with the pipe joint side engagement of the pipe joint main body 110 in a state where the valve cartridge 10A is incorporated in the incorporation flow path region 102 of the gas flow path 101. The valve cartridge 10 </ b> A is integrated with the pipe joint main body 110 by being engaged with the joint portion 113. Therefore, according to the pipe joint 100A including the valve cartridge 10A of the second embodiment, a pipe joint in which the valve cartridge 10A is integrated with the pipe joint main body 110 can be easily provided.

(10) Third Embodiment: Configuration of Single Valve Cartridge FIG. 11 is an explanatory diagram schematically showing a perspective view of the valve cartridge 10B of the third embodiment before and after assembly. FIG. 12 is an explanatory view showing a vertical cross-section of the valve cartridge 10B along the line 12-12 in FIG. 11 as an assembled state in the pipe joint 100B. FIG. 13 is an explanatory view showing a horizontal cross section of the valve cartridge 10B taken along line 13-13 in FIG. 11 as being assembled into the pipe joint 100B. The valve cartridge 10B includes the same valve body 30 as the valve cartridge 10 of the first embodiment, a coil spring 40, and a pedestal component 50, and the form of the cartridge engaging portion 28A in the cartridge body 20B is the same as that of the second embodiment. Different from the valve cartridge 10A. In addition, the pipe joint 100B includes the gas flow path 101 in the pipe joint main body 110 so as to intersect the merge flow path 112r, and the merge flow path tube body 112 side is connected to the built-in flow area 102 of the valve cartridge 10B. It is different in the point to do.

  Similar to the first embodiment, the cartridge body 20B is a cylindrical body formed from polyacetal (POM) in a cylindrical shape, and surrounds a part of the flow path 22 in the cartridge around the flow path axis. A notch 25 into which the bottom wall portion 52 of the pedestal component 50 enters and an engagement hole 26 with which the claw portion 56 of the pedestal component 50 engages. Further, the cartridge main body 20B has a cartridge engaging portion 28A protruding from the end surface on the side of the notch 25. As shown in FIG. 11, the cartridge engaging portion 28A has flexibility so as to bend from the base portion, and is involved in the engagement of the valve cartridge 10B with the pipe joint main body portion 110 as will be described later.

(11) Third embodiment: assembly of valve cartridge The assembly of the valve cartridge 10B including the above-described components is the same as in the first embodiment and the second embodiment, and a notch is formed in the cartridge internal flow path 22 of the cartridge body 20B. 25, the valve body 30, the coil spring 40, and the pedestal component 50 are sequentially assembled. As shown in FIG. 12, the valve body 30 is accommodated together with the coil spring 40 in a state where the valve body 30 is urged by the coil spring 40 so as to contact the seal wall portion 32 against the seal portion 24 as shown in FIG. The coil spring 40 is received by the pedestal component 50. Similar to the first embodiment, this pedestal component 50 is integrated with the cartridge main body 20A by engaging the claw portion 56 with the engagement hole 26 of the cartridge main body 20 with the bottom wall 52 inserted into the notch 25. It becomes. Thereby, the valve cartridge 10B is obtained as a single valve cartridge.

(12) Third Embodiment: Assembling the Valve Cartridge into the Pipe Fitting When assembling the valve cartridge 10B into the pipe fitting 100B, as shown in FIGS. 12 and 13, the valve cartridge 10B as a single valve cartridge is used as a seal ring. Together with 130, the valve body 30 is inserted into the gas flow path 101 of the pipe joint 100 </ b> B from the side. As shown in FIGS. 12 and 13, the pipe joint 100B of the third embodiment has an open state at one end side of the gas flow path 101 in the flange portion 115 on the side intersecting the merge flow path 112r. The valve cartridge 10 </ b> B is assembled and inserted from the opening of the flow path 101.

  The valve cartridge 10B is inserted and inserted in a state where the cartridge engaging portion 28A is bent from its base portion as shown in FIG. Then, when the cartridge engaging portion 28A reaches the joining location between the joining flow passage 112r and the gas passage 101, the cartridge engaging portion 28A returns to its original shape and the gas passage 101 in the flange portion 115, more specifically, the valve. The cartridge 10B enters the engagement recess 116 formed in the flow channel peripheral wall 102a of the built-in flow channel region 102 of the cartridge 10B and engages with the recess. The engagement recess 116 corresponds to the pipe joint side engaged portion 113 in the valve cartridge 10A, and the engagement of the cartridge engagement portion 28A and the engagement recess 116 leads to the pipe joint main body 110 in the pipe joint 100B. Assembling of the valve cartridge 10B is completed. As shown in FIG. 11, the cartridge engaging portion 28A has a plate shape protruding from the end surface of the cartridge main body 20B, and therefore does not hinder the flow of fuel vapor in the merging channel 112r.

  After the above-described insertion of the valve cartridge 10B, the lid 120 is attached to the flange portion 115 at the open end of the gas flow path 101 in the pipe joint main body 110, the opening of the gas flow path 101 is closed, and the valve cartridge 10B. Can be obtained. The lid 120 is integrated with the pipe joint main body 110 by bonding or heat welding.

  The incorporated valve cartridge 10B receives this gas pressure when the pressure of the fuel vapor flowing from one of the branch flow paths 114r into the gas flow path 101 of the pipe joint 100B reaches the specified flow path opening pressure, and the valve body 30 Is separated from the seal portion 24 against the urging force of the coil spring 40, and the gas flow path 101, specifically, the in-cartridge flow path 22 is opened. On the other hand, when the pressure of the fuel vapor flowing into the gas flow path 101 of the pipe joint 100B from any one of the branch flow paths 114r is lower than a predetermined flow path opening pressure, the valve cartridge 10B is moved by the coil spring 40 to the valve main body 30. The seal portion 24 is contacted to close the flow path, but a small amount of fuel vapor is passed through the gas flow path 101 from the through hole 33 provided in the valve body 30.

(13) Third Embodiment: Effects of Valve Cartridge The valve cartridge 10B of the third embodiment described above can achieve the same effects as those described in the first embodiment and the second embodiment.

(14) Fourth Embodiment: Valve Cartridge Assembling into Pipe Fitting FIG. 14 is an explanatory view showing a pipe fitting 100C according to a fourth embodiment in a horizontal sectional view with the valve cartridge 10C assembled in the same manner as FIG. . The pipe joint 100C of the fourth embodiment is characterized in that the valve cartridge 10A is incorporated into a branch flow path 114r branched from the gas flow path 101.

  In the pipe joint 100C of the fourth embodiment, as shown in the figure, a branch flow path 114r branched from the gas flow path 101 of the pipe joint main body 110 is formed by a branch port 114, and this branch flow path 114r is formed as a cartridge built-in flow path. Let it be area 102. The branch port 114 has a branch flow path 114r as an open flow path and a flow path opening side as a so-called tree structure for pipe connection. The pipe joint 100C includes a pipe joint side engaged portion 113 at a branch point between the branch flow path 114r and the gas flow path 101, and the valve cartridge 10A together with the seal ring 130 from the opening side of the branch flow path 114r. The branch port 114 is inserted into the built-in flow path region 102 as the branch flow path 114r. The assembly of the valve cartridge 10A in the pipe joint 100C is completed by the engagement of the cartridge engaging part 28 and the pipe joint side engaged part 113. As a result, the pipe joint 100C of the fourth embodiment in which the valve cartridge 10A is assembled and accommodated is obtained.

(15) Fourth Embodiment: Effects of Pipe Joint The effects described above similar to those of the first embodiment and the second embodiment can also be achieved by the pipe joint 100C of the fourth embodiment described above.

  In the pipe joint 100C of the fourth embodiment described above, the branch flow path 114r branched from the gas flow path 101 in the pipe joint main body 110 is used as the built-in flow path area 102 of the valve cartridge 10A. The valve cartridge 10A is incorporated and provided so that the component 50 side becomes the gas flow path 101 side. Therefore, according to the pipe joint 100C of the fourth embodiment, a pipe joint that allows the fuel vapor flowing from the branch flow path 114r to flow into the gas flow path 101 in the branch flow path 114r is connected to the valve cartridge 10A to the branch flow path 114r. Can be provided via integration.

  The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the above-described effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In the second embodiment and the third embodiment described above, a plurality of branch ports 114 are provided. However, at least one branch port 114 may be provided in the pipe joint 100A or the pipe joint 100B. At this time, the number of branch ports 114 may be defined according to the size of the fuel tank FT.

  In the second to fourth embodiments described above, the seal ring 130 is incorporated in the incorporating flow path region 102 together with the valve cartridges 10A to 10C. However, since the through hole 33 is provided in the valve main body 30 to allow a small amount of fuel vapor to pass. The seal ring 130 may be omitted.

  In the above-described second to fourth embodiments, the valve cartridge and the pipe joint used for the circulation of the fuel vapor have been described. However, the valve cartridge and the pipe joint may be used for the circulation of the fluid performed with a gas other than the fuel vapor and other liquids.

DESCRIPTION OF SYMBOLS 10,10A-10C ... Valve cartridge 20, 20A-20B ... Cartridge main body 21 ... Branch pipe corresponding penetration part 22 ... Cartridge flow path 24 ... Seal part 25 ... Notch 26 ... Engagement hole 27 ... Engagement curved piece part 28, 28A ... Cartridge engaging portion 29 ... Stopper portion 30 ... Valve body 32 ... Seal wall portion 33 ... Through hole 40 ... Coil spring 50 ... Base component 51 ... Ceiling portion 52 ... Bottom wall portion 53 ... Side wall portion 54 ... Top portion 55 ... Thin leaf piece 56 ... Claw part 57 ... Internal flow path 100, 100A to 100C ... Pipe joint 101 ... Gas flow path 102 ... Built-in flow area (cartridge built-in flow area)
Reference numeral 102a: Channel peripheral wall 103: Engaging recess 110: Pipe joint body 112: Merged flow channel body part 112r: Merged channel 112s: Receiving seat 113: Pipe joint side engaged portion 113b: Bridge 114 ... Branch port 114r ... Branching channel 115 ... Flange part 116 ... Engaging recess 120 ... Lid 130 ... Seal ring CN ... Canister FCV1 to FCV4 ... Rollover valve FFV ... Full tank regulating valve FS ... Fuel tank system FT ... Fuel tank IP ... Inlet pipe P1-P6 ... Piping

Claims (5)

A valve cartridge (10, 10A, 10B) incorporated in a flow path region (102) of a fluid flow path (101),
An in-cartridge channel (22) of a fluid that is inserted into the channel region (102) and flows through the fluid channel (101) is formed, and a part of the in-cartridge channel (22) is a channel axis. A cylindrical cartridge body (20, 20A, 20B) having a seal portion (24) surrounding the periphery;
A valve body (30) accommodated in the cartridge flow path (22) of the cartridge body (20, 20A, 20B) and closing the cartridge flow path (22) by contacting the seal portion (24);
A coil spring (40) housed in the cartridge flow path (22) of the cartridge body (20, 20A, 20B) and biasing the valve body (30) toward the seal portion (24);
A pedestal component that is positioned on the opposite side of the seal portion (24) across the coil spring (40) and receives the coil spring (40) in the flow path (22) in the cartridge and allows the fluid to flow therethrough. (50)
The pedestal component (50) includes an engaged portion (56) that engages with an engagement portion (26) for engaging the pedestal component that the cartridge main body (20, 20A, 20B) has in the cartridge flow path (22). The valve cartridge (10, 10A) is integrated with the cartridge body (20, 20A, 20B) by the engagement of the engaged portion (56) with the engaging portion (26). , 10B). A pipe joint (100, 100A-) having a fluid flow path (101) in the pipe joint main body (110) and incorporating a valve cartridge (10, 10A, 10B) in the flow path area of the fluid flow path (101). 100C),
The valve cartridge (10, 10A, 10B)
An in-cartridge channel (22) of a fluid that is inserted into the channel region (102) and flows through the fluid channel (101) is formed, and a part of the in-cartridge channel (22) is a channel axis. A cylindrical cartridge body (20, 20A, 20B) having a seal portion (24) surrounding the periphery;
A valve body (30) accommodated in the cartridge flow path (22) of the cartridge body (20, 20A, 20B) and closing the cartridge flow path (22) by contacting the seal portion (24);
A coil spring (40) housed in the cartridge flow path (22) of the cartridge body (20, 20A, 20B) and biasing the valve body (30) toward the seal portion (24);
A pedestal component that is positioned on the opposite side of the seal portion (24) across the coil spring (40) and receives the coil spring (40) in the flow path (22) in the cartridge and allows the fluid to flow therethrough. (50)
The pedestal component (50) includes an engaged portion (56) that engages with an engagement portion (26) for engaging the pedestal component that the cartridge main body (20, 20A, 20B) has in the cartridge flow path (22). ) And the pipe joint (100, 100A) integrated with the cartridge body (20, 20A, 20B) by the engagement of the engaged portion (56) with the engaging portion (26). ~ 100C). The pipe joint (100A, 100B) according to claim 2,
One end side of the fluid channel (101) is in an open state, and the valve cartridge (10A, 10B) is in a state of being incorporated into the channel region (102) from the opening of the fluid channel (101),
The pipe joint main body (110) forms a merging channel (112r) where the fluid channel (101) merges on the side of the base part (50) of the incorporated valve cartridge (10A, 10B). And a branch channel (114r) branched from the fluid channel (101) on the opposite side of the pedestal part (50) of the incorporated valve cartridge (10A, 10B). A pipe joint (100A, 100B) having a branch flow passage pipe body portion (114) that forms a fluid passage (101) and a lid (120) that closes the opening of the fluid flow passage (101). The pipe joint (100, 100A, 100B) according to claim 2 or claim 3,
The pipe joint side engaged portion (103, 113, 116) that engages the cartridge engaging portion (27, 28, 28A) of the valve cartridge (10, 10A, 10B) on the pipe joint main body portion (110). )
The cartridge engaging portion (27, 28, 28A) of the valve cartridge (10, 10A, 10B) is engaged with the pipe joint side in a state where the valve cartridge is incorporated in the flow path region (102). A pipe joint (100, 100A, 100B) that engages with the portion (103, 113, 116). A pipe joint (100C) according to claim 2,
The pipe joint body (110) includes a branch channel body (114) that forms a branch channel (114r) branched from the fluid channel (101).
The valve cartridge (10A) has the branch channel (114r) as the channel region (102), and the pedestal component (50) side of the branch channel (114r) is the fluid channel (101) side. A pipe joint (100C) incorporated so as to become.

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