JP2019190352A - Connection device and connection component assembly - Google Patents

Abstract

To provide a connection device which enables a wide choice of components connectable in an evaporative fuel passage.SOLUTION: A connection device 6 is a device installed in an evaporative fuel passage in which an evaporative fuel desorbed from a canister circulates to an engine. The connection device 6 includes: a housing 6a having an internal passage 6a1 in which the evaporative fuel circulates; and three attachment parts which are integrally provided with the housing 6a and respectively have openings 60a, 61a, 62a formed therein and leading to the internal passage 6a1. The three attachment parts respectively have the same shape portions to which components installed at the evaporative fuel passage may be respectively attached. The connection device 6 provides a device which enables a wide choice of components connectable in the evaporative fuel passage and achieves high versatility.SELECTED DRAWING: Figure 2

Description

  The disclosure in this specification relates to a connecting device and a connecting component assembly provided in an evaporated fuel passage through which evaporated fuel flows toward an engine.

  Patent Document 1 discloses that a purge valve integrally connected to a housing containing a check valve is installed in an evaporative fuel passage that extends from a fuel tank to an engine intake pipe via a canister. Patent Document 1 merely discloses a check valve installed in a flow path extending in various directions in the housing, and a configuration in which the housing and the purge valve are integrated.

U.S. Pat. No. 9,206,771

  Since the evaporative fuel passage is installed in a narrow space such as around the engine in the vehicle, it is required to efficiently and rationally install various functional parts, piping, and the like in this space. For example, when it is necessary to install an evaporative fuel passage part in a place where there is a vibration part such as an engine, a limited space where the influence of vibration can be suppressed as much as possible, for example, between parts. You may have to install it in

  In addition, there are various vehicle product specifications, and there are various types and quantities of parts to be connected in the evaporative fuel passage. Therefore, there is a problem in that the number of parts management man-hours increases for devices related to parts connection.

  An object of the disclosure in this specification is to provide a connecting device that can widely select components that can be connected in an evaporative fuel passage, and to provide a connecting component assembly that includes various components.

  A plurality of aspects disclosed in this specification adopt different technical means to achieve each purpose. Further, the reference numerals in parentheses described in the claims and in this section are examples showing the correspondence with specific means described in the embodiments described later as one aspect, and limit the technical scope. is not.

  One of the disclosed connecting devices is a connecting device (6; 106) installed in an evaporated fuel passage (18, 19, 19a) through which evaporated fuel desorbed from the canister (16) flows toward the engine. A housing (6a) having an internal passage (6a1) through which evaporated fuel flows and an opening (60a, 61a, 62a; 64a) leading to the internal passage are formed integrally with the housing. 3 or 4 mounting parts (60, 61, 6) each having an identical shape part to which the component parts (3, 4, 5, 7, 9) installed in the evaporative fuel passage can be respectively mounted. 62; 64).

  According to this connecting device, each of the three or four mounting portions provided in the connecting device has the same shape portion. A component arbitrarily selected from the components that can be installed in the fuel vapor passage can be mounted on the same shape portion. These components are various parts that form an evaporative fuel passage, and include various functional parts such as a valve installed in the evaporative fuel passage, a pipe that forms the passage, and a lid member that closes the passage. According to this configuration, it is possible to install various components in various positions and orientations according to the position and orientation of the mounting portion in the coupling device. As described above, according to this disclosure, it is possible to obtain a highly versatile coupling device that can widely select components that can be coupled in the evaporated fuel passage.

It is the schematic which showed the evaporative fuel processing system which can mount the connection apparatus of 1st Embodiment. It is sectional drawing which showed the 1st example regarding the component which can be connected with a connection apparatus in the system of 1st Embodiment. It is sectional drawing which showed the 2nd example regarding the component which can be connected with a connection apparatus in the system of 1st Embodiment. It is sectional drawing which showed the 3rd example regarding the component which can be connected with a connection apparatus in the system of 1st Embodiment. It is sectional drawing which showed the 4th example regarding the component which can be connected with a connection apparatus in the system of 1st Embodiment. It is the schematic which showed the evaporative fuel processing system which can mount the coupling device of 2nd Embodiment. It is sectional drawing which showed the 1st example regarding the component which can be connected with a connection apparatus in the system of 2nd Embodiment. It is sectional drawing which showed the 2nd example regarding the component which can be connected with a connection apparatus in the system of 2nd Embodiment. It is sectional drawing which showed the 3rd example regarding the component which can be connected with a connection apparatus in the system of 2nd Embodiment. It is sectional drawing which showed the 4th example regarding the component which can be connected with a connection apparatus in the system of 2nd Embodiment. It is sectional drawing of a connection component assembly provided with the connection device of 3rd Embodiment, and the component connected with the connection device.

  Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not specified, unless there is a particular problem with the combination. Is also possible.

(First embodiment)
A first embodiment will be described with reference to FIGS. The evaporative fuel processing system shown in FIG. 1 supplies HC gas or the like in the fuel adsorbed by the canister 16 to the intake passage of the engine, and prevents the evaporative fuel from the fuel tank 14 from being released into the atmosphere. It is also a system. The evaporative fuel processing system includes a connecting device 6 to which various components that form an evaporative fuel passage are connected. The connecting device 6 and the components connected via the connecting device 6 constitute a connecting component assembly in the evaporated fuel processing system. The connecting device 6 and the connecting part assembly will be described later.

  The evaporated fuel introduced into the intake system 1 of the engine is mixed with combustion fuel supplied from the injector or the like to the engine and burned in the cylinder of the engine. In the intake system 1 of the engine, one end side of an intake pipe 10 is connected to an intake manifold 20 of the engine via a throttle valve 21, and a filter 13, a supercharger 12, an intercooler 11, and the like are provided in the middle of the intake pipe 10. Configured. The evaporative fuel purge system 2 is formed by connecting a fuel tank 14 and a canister 16 to an intake manifold 20 via a pipe 15, a pipe 17, a relay pipe 19 and a pipe 18.

  The filter 13 is provided at the most upstream part of the intake pipe 10 and captures dust, dust, and the like in the intake air. The supercharger 12 is composed of an intake compressor for increasing intake charging efficiency, and is provided on the intake manifold 20 side, which is downstream of the filter 13. The supercharger 12 includes a compressor that is linked to a turbine that is operated by the exhaust energy of the engine. The compressor of the supercharger 12 pressurizes the intake air that has passed through the filter 13 and supplies it to the intake manifold 20.

  The intercooler 11 is a heat exchanger for cooling. The intercooler 11 is provided downstream of the supercharger 12. In the intercooler 11, heat exchange is performed between the intake air pressurized by the supercharger 12 and the outside air to cool the intake air. The throttle valve 21 is an intake air amount adjustment valve that adjusts the amount of intake air flowing into the intake manifold 20 by adjusting the opening at the inlet of the intake manifold 20 in conjunction with the accelerator pedal. The intake air sequentially passes through the filter 13, the supercharger 12, the intercooler 11, and the throttle valve 21, flows into the intake manifold 20, and is mixed with the combustion fuel injected from the injector or the like so as to have a predetermined air-fuel ratio. And burned in the cylinder.

  The fuel tank 14 is a container for storing fuel such as gasoline. The fuel tank 14 is connected to the inflow portion 16 a of the canister 16 by a pipe 15. The canister 16 is a container in which an adsorbent such as activated carbon is enclosed. The canister 16 takes in evaporated fuel generated in the fuel tank 14 from the inflow portion 16a via the pipe 15 and temporarily adsorbs the adsorbent on the adsorbent. The canister 16 is provided with a suction portion 16b for sucking fresh fresh air. By providing the canister 16 with the suction portion 16 b, atmospheric pressure acts in the canister 16. The canister 16 can easily remove the evaporated fuel adsorbed on the adsorbent by the freshly sucked air.

  The canister 16 is provided with an outflow portion 16c through which the evaporated fuel separated from the adsorbent flows out. One end side of the pipe 17 is connected to the outflow part 16c. The other end side of the pipe 17 is connected to the inflow portion of the purge control valve 4. Here, the passage in the pipe 17 is also referred to as a fuel inflow passage through which fuel flows into the purge control valve 4. The purge control valve 4 and the first check valve 3 communicate with each other by a configuration connected by a relay pipe 19. The outflow side of the first check valve 3 is connected to one end side of the pipe 18. Here, the passage in the pipe 18 is also referred to as a fuel outflow passage through which the fuel flowing out from the purge control valve 4 passes. The other end side of the pipe 18 is connected to the inflow portion of the intake manifold 20.

  The purge control valve 4 is an opening / closing means for opening and closing the evaporated fuel passage, and can permit and block the supply of the evaporated fuel flowing out from the canister 16 to the engine. As shown in FIG. 4, the purge control valve 4 includes a valve body 43 and an electromagnetic coil portion 42 including a coil portion, a spring 44 and the like. The purge control valve 4 opens and closes the evaporated fuel passage by driving the valve body 43 in accordance with the balance between the electromagnetic force generated when the coil portion is energized and the urging force of the spring 44.

  The purge control valve 4 normally maintains a state in which the fuel vapor passage is closed. When the coil portion is energized, the electromagnetic force overcomes the elastic force of the spring 44 and the valve body 43 is separated from the valve seat 41b. Open the fuel vapor passage. The control device controls the ratio of the on time to the time of one cycle formed by the on time and off time of energization, that is, the duty ratio, and energizes the coil unit. The purge control valve 4 is also called a duty control valve. By this energization control, the flow rate of the evaporated fuel flowing through the evaporated fuel passage is adjusted.

  The purge control valve 4 includes a housing that forms a passage for fluid that is evaporated fuel. The housing has an input port 40a that receives supply of fluid, an input side housing portion 40 that accommodates a valve body 43, an electromagnetic coil portion 42, and the like, an output side housing portion 41 that has a valve seat 41b and an output port 41a, It has. The input side housing part 40 and the output side housing part 41 are formed of resin.

  The purge control valve 4 has a connector extending in the same direction as the input port 40 a in the input side housing portion 40. The connector has a terminal 40b for energizing the coil part, and the terminal 40b is a resin molded part protruding from the inside to the outside. The terminal 40b is an energization terminal that is electrically connected to the coil portion. A power supply side connector for supplying power from the power supply unit and the current control device is connected to the connector. When the connector and the power supply side connector are connected and the terminal 40b is electrically connected to a current control device or the like, the purge control valve 4 can control the current supplied to the coil portion.

  The output-side housing part 41 includes a flange part 41c that covers the upper opening of the input-side housing part 40 located on the side opposite to the input port 40a. The output port 41a is provided inside the flange portion 41c and communicates with a valve port formed inside the valve seat 41b. The valve seat 41b is provided at the tip of a cylindrical portion that protrudes from the flange portion 41c side to the opposite side in the output side housing portion 41. The flange portion 41c is integrally joined in a state where the flange portion 41c is superimposed on the flange portion 40c protruding radially outward from the upper opening of the input side housing portion 40 over the entire circumference. This bonding can be performed by melting the resin by laser irradiation and bonding the two together. Thus, by integrally joining the flange portion 41c and the flange portion 40c, the input-side housing portion 40 and the output-side housing portion 41 can be coupled so that the fluid flowing inside does not leak outside. Moreover, you may form the integral joining of the flange part 41c and the flange part 40c by the joining means using the adhesive agent.

  The first check valve 3 is an evaporative fuel passage from the canister 16 to the intake pipe 10, and is a valve installed between the purge control valve 4 and the intake manifold 20. The first check valve 3 allows the original flow of the evaporated fuel from the fuel inflow passage (passage in the pipe 17) to the fuel outflow passage (passage in the pipe 18) in the evaporative fuel passage. Prevents the backflow of evaporated fuel from the fuel into the fuel inflow passage. The first check valve 3 includes a valve body that operates to open the flow path with the original flow of the evaporated fuel and close the flow path with the reverse flow of the evaporated fuel.

  The branch passage formed inside the branch pipe 19 a is a relay passage, that is, a passage that branches from a passage portion between the purge control valve 4 and the first check valve 3. The first check valve 3 is a backflow prevention valve installed between a branch point branching to the branch passage and a fuel outflow passage (passage in the pipe 18). The downstream end of the branch passage is connected to a pipe located upstream from the supercharger 12. The evaporative fuel processing system includes the branch pipe 19 a, whereby the evaporative fuel that has passed through the purge control valve 4 can be introduced into the passage upstream of the supercharger 12.

  The second check valve 5 is a backflow prevention valve installed in the branch passage. The second check valve 5 allows the original flow of the evaporated fuel from the relay passage to the passage upstream of the supercharger 12 in the branch passage, and prevents the reverse flow of the evaporated fuel to the relay passage. Can do. The second check valve 5 includes a valve element that operates to open the flow path in the branch passage and close the flow path with the backflow of the evaporated fuel.

  When the supercharger 12 is not operating when the vehicle is running (normal purge), when the purge control valve 4 is opened by the control device, the negative pressure in the intake manifold 20 generated by the intake action of the piston and the canister 16 are reduced. A difference from such atmospheric pressure occurs. Due to this pressure difference, the vapor fuel adsorbed in the canister 16 flows through the fuel inflow passage, the purge control valve 4, the relay passage, the first check valve 3, and the fuel outflow passage, and is sucked into the intake manifold 20. .

  The evaporated fuel sucked into the intake manifold 20 is mixed with the original combustion fuel supplied from the injector or the like to the engine and burned in the cylinder of the engine. Further, in the engine cylinder, the air-fuel ratio, which is the mixing ratio of the combustion fuel and the intake air, is controlled to be a predetermined air-fuel ratio. The control device performs duty control on the opening / closing time of the purge control valve 4 to adjust the purge amount of the evaporated fuel so that the predetermined air-fuel ratio is maintained even if the evaporated fuel is purged.

  When the supercharger 12 is in operation when the vehicle is running (supercharging purge), the intake manifold 20 becomes positive pressure due to the pressurized intake air. For this reason, the amount of evaporated fuel cannot be supplied to the engine through the purge control valve 4. Further, at this positive pressure, the evaporated fuel may flow backward and the evaporated fuel may be released into the atmosphere. In order to prevent this backflow, a first check valve 3 is provided.

  When the purge control valve 4 is opened during the supercharging purge, the vapor fuel adsorbed in the canister 16 flows through the fuel inflow passage and the purge control valve 4 and passes through the second check valve 5 from the relay passage. Then, it flows down the branch passage and is supplied to the passage upstream of the supercharger 12. Thus, the evaporated fuel supplied to the upstream side of the supercharger 12 reaches the intake manifold 20 through the intake pipe 10 and is mixed with the original combustion fuel supplied to the engine from an injector or the like. It is burned in the cylinder.

  The evaporative fuel processing system includes a connecting part assembly. The connecting part assembly is an assembly in which a plurality of components are connected, and constitutes a specific part of the evaporated fuel passage. The connecting part assembly includes a connecting device 6 on which a plurality of components are mounted. By connecting a plurality of component parts via the connecting device 6, the number of parts to be connected, the direction in which each of the plurality of passages extends, and the positional relationship and the direction relationship with respect to the plurality of passages can be selected in various forms. . The components included in the connecting part assembly are various parts provided in the evaporated fuel processing system. Various parts include functional parts such as a control valve and a check valve installed in the evaporated fuel passage, pipes that form the passage, joints, lid members, and other passage wall members.

  Examples of selectable coupling component assemblies will be described with reference to FIGS. FIG. 2 shows a first example connecting part assembly 8 included in the fuel vapor processing system. As shown in FIG. 2, the connecting component assembly 8 includes a connecting device 6 having a plurality of mounting portions, three tubular members 7 connected via the connecting device 6, the first check valve 3 and And a second check valve 5.

  The coupling device 6 contributes to efficiently and rationally installing various components, pipes, and the like in a narrow space such as an engine compartment or to a desired installation state. Further, the coupling device 6 contributes to installing various components according to the vehicle specifications so that a large number of combinations, positional relationships, and pipe directional relationships can be realized. The connecting device 6 includes a housing 6a having an internal passage 6a1 through which evaporated fuel flowing out of the canister 16 flows. The coupling device 6 includes a first mounting portion 60, a second mounting portion 61, and a third mounting portion 62 that are formed integrally with the housing 6a.

  The first mounting portion 60, the second mounting portion 61, and the third mounting portion 62 each have the same shape portion on which various components can be mounted. This identically shaped portion is a portion provided so that the same component can be attached to all the mounting portions of the coupling device 6, and constitutes at least a portion necessary for mounting the same component. ing. In other words, the connecting device 6 is configured such that each mounting portion includes the same shape portion that can mount the same component on any of the three mounting portions. This identically shaped portion is preferably shaped so that it can be mounted at a position where the component is rotationally displaced about its axis. The identically shaped portion has, for example, a circular shape that allows the component parts to rotate and displace around its axis, and a regular polygon shape that can be mounted in a state where it is angularly displaced at a predetermined angle.

  The first mounting portion 60 forms a flange portion on which a component can be mounted and a cylindrical portion 60b, and has an opening portion 60a communicating with the internal passage 6a1 inside the flange portion. The flange portion is located on the distal end side in the first mounting portion 60 and is provided integrally with the cylindrical portion 60b that connects the opening 60a and the internal passage 6a1. The cylindrical portion 60b is a portion that is provided integrally with the housing 6a on the base side of the first mounting portion 60, and integrally connects the housing 6a and the flange portion. Since the cylindrical portion 60b has a predetermined axial length extending from the base portion connected to the housing 6a and the distal end side portion connected to the flange portion, the cylindrical portion 60b includes a columnar internal space communicating with the internal passage 6a1.

  The second mounting portion 61 is provided adjacent to the first mounting portion 60 in the coupling device 6 and in a direction intersecting or orthogonal to the first mounting portion 60. The second mounting portion 61 is oriented such that the passage axis intersects or is orthogonal to the first mounting portion 60. The second mounting portion 61 forms a flange portion and a cylindrical portion 61b on which component parts can be mounted, and has an opening portion 61a communicating with the internal passage 6a1 inside the flange portion. The flange portion is located on the distal end side of the second mounting portion 61 and is provided integrally with a cylindrical portion 61b that connects the opening 61a and the internal passage 6a1. The cylindrical portion 61b is a portion that is integrally provided on the housing 6a on the base side of the second mounting portion 61 and integrally connects the housing 6a and the flange portion. Since the cylindrical portion 61b has a predetermined axial length extending from a base portion connected to the housing 6a and a distal end side portion connected to the flange portion, the cylindrical portion 61b includes a columnar internal space communicating with the internal passage 6a1.

  The third mounting portion 62 is adjacent to the first mounting portion 60 in the coupling device 6 and is provided in a direction intersecting or orthogonal to the first mounting portion 60. The third mounting portion 62 is oriented such that the passage axis intersects or is orthogonal to the first mounting portion 60. The third mounting portion 62 is provided in the coupling device 6 in a direction facing the second mounting portion 61 with the housing 6a interposed therebetween. The third mounting portion 62 has a passage axis that is parallel to the second mounting portion 61. The third mounting portion 62 forms a flange portion and a cylindrical portion 62b on which components can be mounted, and has an opening 62a communicating with the internal passage 6a1 inside the flange portion. The flange portion is located on the distal end side in the third mounting portion 62, and is provided integrally with the cylindrical portion 62b that connects the opening 62a and the internal passage 6a1. The cylindrical portion 62b is a portion that is provided integrally with the housing 6a on the base side of the third mounting portion 62 and integrally connects the housing 6a and the flange portion. Since the cylindrical portion 62b has a predetermined axial length extending from a base portion connected to the housing 6a and a distal end side portion connected to the flange portion, the cylindrical portion 62b includes a columnar internal space communicating with the internal passage 6a1.

  The mounting portion in the coupling device 6 has an opening that opens in a different direction with respect to the opening of the other mounting portion. The opening 60 a in the first mounting portion 60 opens in a direction intersecting or orthogonal to both the opening 61 a in the second mounting portion 61 and the opening 62 a in the third mounting portion 62. The opening 61 a in the second mounting portion 61 opens in the opposite direction to the opening 62 a in the third mounting portion 62.

  The first mounting portion 60, the second mounting portion 61, and the third mounting portion 62 have, for example, at least the same flange shape. Furthermore, it is preferable that the first mounting portion 60, the second mounting portion 61, and the third mounting portion 62 have the same shape in the flange portion and the cylindrical portion.

  Each of the cylindrical portions 60b, 61b, 62b can be provided with an attachment 63 having the same shape inside. The attachment 63 is a bottomed cup-shaped body with one end opened. The attachment 63 includes an outer peripheral edge portion 63a provided on the opening side, a bottom portion 63c on which an umbrella-shaped valve body that forms a check valve can be mounted, and a cylindrical portion 63b that connects the outer peripheral edge portion 63a and the bottom portion 63c. A cup-shaped body provided integrally. The outer peripheral edge 63a is a portion that protrudes radially outward in the radial direction on the distal end side of the cylindrical portion 63b, and has an outer diameter larger than that of the cylindrical portion 63b.

  The attachment 63 is installed in the mounting portion in a state where the outer peripheral edge 63a is fitted into the opening of the mounting portion and the cylindrical portion 63b is fitted inside the cylindrical portion of the mounting portion. The bottom 63c is a support that can support the shaft of the valve body that is inserted through the center hole that passes through the center. The bottom 63c has a plurality of peripheral holes. The plurality of peripheral holes are through holes that penetrate the periphery of the central hole in the bottom 63c so as to surround the central hole. The plurality of peripheral holes communicate the internal passage 6a1 in the housing 6a and the internal space of the tubular portion 63b.

  The valve body of the check valve has a shaft portion supported by the bottom portion 63c and an umbrella portion integrally provided on the base side of the shaft portion. The umbrella portion is an elastically deformable portion, covers the peripheral hole portion in the internal space of the cylindrical portion 63b, and is in contact with the outer side of the diameter of the peripheral hole portion in the bottom 63c. The check valve prevents the backflow of the evaporated fuel in the internal passage 6a1 from the internal space of the tubular portion 63b when the pressure acts on the internal passage 6a1 side with respect to the umbrella portion, and the umbrella portion closely contacts the bottom portion 63c. To do. When the pressure from the internal passage 6a1 side acts on the umbrella portion, the check valve elastically deforms and separates from the bottom 63c, so that the cylindrical portion 63b extends from the internal passage 6a1 through the peripheral hole portion. Allow evaporative fuel flow down to the internal space.

  A tubular member 7 that is one of the components is attached to the first attachment portion 60. The tubular member 7 includes a flange portion 70 that is fixed to the mounting portion by welding or adhesion, and a tube portion 71 that extends from the flange portion 70. The pipe part 71 has a passage communicating with the internal space of the cylindrical part in the mounting part. The pipe portion 71 is connected to a pipe that forms an evaporated fuel passage in the evaporated fuel processing system. An attachment 63 in which the first check valve 3 is installed is attached to the second attachment portion 61. An attachment 63 provided with the second check valve 5 is attached to the third attachment portion 62. The tubular member 7 is mounted on each of the second mounting portion 61 and the third mounting portion 62. The outer peripheral edge 63a and the flange 70 are sealed with a packing 80. The first check valve 3 and the second check valve 5 are in a positional relationship facing each other across the internal passage 6a1. The connecting component assembly 8 includes a connecting device 6, three tubular members 7 connected via the connecting device 6, and a first check valve 3 and a second check valve housed in the connecting device 6. And 5.

  The tubular member 7 mounted on the first mounting portion 60 is connected to the relay pipe 19 and communicates with the purge control valve 4 via the relay pipe 19. The tubular member 7 attached to the second attachment portion 61 is connected to the pipe 18 and communicates with the throttle valve 21 via the pipe 18. The tubular member 7 attached to the third attachment portion 62 is connected to the branch pipe 19a and communicates with a passage on the upstream side of the supercharger 12 through the branch pipe 19a.

  FIG. 3 shows a second example connecting part assembly 108 included in the fuel vapor processing system. As shown in FIG. 3, the connecting component assembly 108 is accommodated in the connecting device 6 similar to the example shown in FIG. 2, three tubular members 7 connected via the connecting device 6, and the connecting device 6. The first check valve 3 and the second check valve 5 are provided. 3, elements having the same reference numerals as those in FIG. 2 have the same configuration as the elements in FIG. The configurations, operations, and effects that are not particularly described below are the same as those described above with respect to the connecting part assembly 8. Hereinafter, only the difference from the connection component assembly 8 will be described with respect to the connection component assembly 108.

  The connecting part assembly 108 differs from the connecting part assembly 8 in the mounting portion where each of the two check valves is installed. In other words, the connecting part assembly 108 is different from the connecting part assembly 8 in the place where each of the two check valves is installed in the connecting device 6. An attachment 63 in which the first check valve 3 is installed is attached to the first attachment portion 60. An attachment 63 provided with the second check valve 5 is attached to the second attachment portion 61.

  The tubular member 7 attached to the first attachment portion 60 is connected to the pipe 18 and communicates with the throttle valve 21 via the pipe 18. The tubular member 7 attached to the second attachment portion 61 is connected to the branch pipe 19a and communicates with a passage on the upstream side of the supercharger 12 through the branch pipe 19a. The tubular member 7 attached to the third attachment portion 62 is connected to the relay pipe 19 and communicates with the purge control valve 4 via the relay pipe 19.

  FIG. 4 shows a third example connecting part assembly 208 included in the evaporated fuel processing system. As shown in FIG. 4, the connecting part assembly 208 is connected to the connecting device 6 similar to the example shown in FIG. 2, the two tubular members 7 connected via the connecting device 6, and the purge control valve 4. A first check valve 3 and a second check valve 5 housed in the device 6 are provided. In FIG. 4, elements denoted by the same reference numerals as those in FIG. 2 have the same configuration as the elements in FIG. The configurations, operations, and effects that are not particularly described below are the same as those described above with respect to the connecting part assembly 8. Hereinafter, regarding the connecting part assembly 208, only the points different from the connecting part assembly 8 will be described.

  The connecting component assembly 208 is different from the connecting component assembly 8 in that the purge control valve 4 is mounted on the first mounting portion 60. The flange portion 41 c of the output side housing portion 41 in the purge control valve 4 is integrally joined in a state where it is overlapped with the flange portion in the first mounting portion 60. The purge control valve 4 is fixed to the coupling device 6 by this joining. The purge control valve 4 and the coupling device 6 can be joined by melting the resin by laser irradiation and bonding them together. Thus, the purge control valve 4 and the coupling device 6 are coupled so that the fluid flowing through the flange portion 41c and the flange portion of the first mounting portion 60 are integrally joined so as not to leak to the outside. Can do. Moreover, you may form both integral joining by the joining means using the adhesive agent.

  The first mounting portion 60 is integral with the purge control valve 4 and communicates with the pipe 17 on the canister 16 side via the purge control valve 4. The purge control valve 4 includes an output port 41a and an input port 40a that extend in a direction that intersects or is orthogonal to a facing direction in which the second mounting portion 61 and the third mounting portion 62 face each other.

  FIG. 5 shows a fourth example connecting part assembly 308 included in the evaporated fuel processing system. As shown in FIG. 5, the connecting component assembly 308 is connected to the connecting device 6 similar to the example shown in FIG. 2, the two tubular members 7 and the purge control valve 4 connected via the connecting device 6. A first check valve 3 and a second check valve 5 housed in the device 6 are provided. In FIG. 5, elements denoted by the same reference numerals as those in FIGS. 2 and 4 have the same configuration as the elements in FIGS. 2 and 4. The configurations, operations, and effects that are not particularly described below are the same as those described above regarding the connection component assembly 8 and the connection component assembly 208. Hereinafter, with respect to the connecting part assembly 308, only differences from the connecting part assembly 8 and the connecting part assembly 208 will be described.

  The connecting part assembly 308 is different from the connecting part assembly 208 in the mounting portion where the first check valve 3 and the purge control valve 4 are installed. An attachment 63 in which the first check valve 3 is installed is attached to the first attachment portion 60. The purge control valve 4 is mounted on the second mounting portion 61. An attachment 63 provided with the second check valve 5 is attached to the third attachment portion 62.

  The flange portion 41 c of the output side housing portion 41 in the purge control valve 4 is integrally joined in a state where it is overlapped with the flange portion in the second mounting portion 61. The integral joining of both can be formed by a welding means that melts and integrates the resin by laser irradiation or a joining means that uses an adhesive. The second mounting portion 61 is integral with the purge control valve 4 and communicates with the pipe 17 on the canister 16 side via the purge control valve 4. The output port 41a and the input port 40a in the purge control valve 4 extend in a direction intersecting or orthogonal to the first mounting portion 60, and face the third mounting portion 62 or extend in the opposite direction.

  The tubular member 7 attached to the first attachment portion 60 is connected to the pipe 18 and communicates with the throttle valve 21 via the pipe 18. The tubular member 7 attached to the third attachment portion 62 is connected to the branch pipe 19a and communicates with the passage on the upstream side of the supercharger 12 through the branch pipe 19a.

  Next, the effect which the connecting device 6 of 1st Embodiment brings is demonstrated. The connecting device 6 is a device that is installed in an evaporative fuel passage through which the evaporated fuel desorbed from the canister 16 flows toward the engine, and is capable of connecting components that form the evaporative fuel passage. The connecting device 6 includes three housings 6a that are provided integrally with the housing 6a, each having an inner passage 6a1 through which evaporated fuel flows, and openings 60a, 61a, and 62a that communicate with the inner passage 6a1. A part. The first mounting portion 60, the second mounting portion 61, and the third mounting portion 62 have the same shape portions that can be respectively mounted with components installed in the evaporated fuel passage. The components include a first check valve 3, a purge control valve 4, a second check valve 5, a tubular member 7, a lid member 9, and the like.

  According to this connecting device 6, each of the three mounting portions included in the connecting device 6 has the same shape. A component arbitrarily selected from the components that can be installed in the fuel vapor passage can be mounted on the same shape portion. According to this, various components can be installed in various positions and orientations according to the position and orientation of the mounting portion in the coupling device 6. According to such a connection device 6, various components that can be connected in the evaporated fuel passage can be selected widely. Therefore, the connecting device 6 can implement various components in a place where the influence of vibration can be suppressed as much as possible in a place where a vibration part such as an engine exists. Further, the connecting device 6 can be applied to an evaporative fuel processing system that can correspond to the product specifications of various vehicles, and can contribute to reducing the number of parts management man-hours related to connecting parts in the evaporative fuel processing system.

  The coupling device 6 includes a first mounting part 60, a second mounting part 61, and a third mounting part 62. According to this, since it has three mounting portions, it is mounted on either a system having an evaporated fuel passage in which two mounting portions are communicated or a system having an evaporated fuel passage in which three mounting portions are in communication. A possible coupling device 6 can be provided. Moreover, according to this, the connection apparatus 6 which can be mounted in the system which can select any one of 0, 1, 2, and 3 functional parts, such as a valve to connect, is obtained.

  The second mounting portion 61 and the third mounting portion 62 are in a facing relationship facing each other across the internal passage 6a1. The first mounting portion 60 has an opening 60a that opens in a direction that intersects the opposing direction in which the second mounting portion 61 and the third mounting portion 62 face each other. According to this, it is applicable also to the path | route which branches the evaporative fuel which passed the opening part 60a into the reverse flow, and can also be applied to the path | route which divides into the flow which makes the evaporative fuel flow straight down, and the flow which branches. The connecting device 6 can be provided. The connecting device 6 has versatility that can be mounted on any system having such a passage.

  A common attachment 63 can be installed in each of the mounting portions. According to this, the connecting device 6 having versatility capable of mounting components that can be installed on the attachment 63 is obtained.

  The attachment 63 has a support portion that supports the check valve. According to this, the coupling device 6 which can mount a check valve is obtained. Further, since the connecting device 6 accommodates the check valve, it is possible to provide the connecting device 6 that contributes to suppressing the physique of the connecting component assembly and can effectively use the installation space. The coupling device 6 includes a check valve and an attachment 63 that supports the check valve. According to this structure, it contributes to suppressing the physique of the connection component assembly which has a non-return valve, and can aim at the effective utilization of installation space.

  The mounting portion included in the coupling device 6 has a portion having the same shape that enables mounting at the position where the component is rotationally displaced about the axis. According to this, since the component parts can be attached to the attachment part at a position that is angularly displaced at a predetermined angle or an arbitrary angle around the axis, the range occupied by the functional parts and piping in the system can be changed variously. Can be installed. Therefore, the connection device 6 has a high degree of freedom and can provide high versatility with regard to the arrangement and handling of piping and functional parts.

  The mounting part has an opening that opens in a different direction with respect to the opening of the other mounting part. According to this, since the components connected to the connecting device 6 can be installed so as to extend in different directions with respect to the other components, the connecting device 6 that can effectively use the installation space can be provided. The connecting component assembly includes a connecting device 6, a first component mounted on the first mounting portion 60, a second component mounted on the second mounting portion 61, and a third mounting portion 62. And a third component attached to the. According to this, it is possible to configure the connecting part assembly 8 having three parts that can be mounted on the evaporated fuel processing system.

  The connecting component assembly 8 includes a connecting device 6, a tubular member 7 mounted on the first mounting portion 60, a first check valve 3 mounted on the second mounting portion 61, and a third And a second check valve 5 mounted on the mounting portion 62. According to this, the connection component assembly 8 which can be mounted in the evaporative fuel processing system of 1st Embodiment can be provided. The connecting component assembly 8 can further provide a passage where the evaporated fuel branches into a reverse flow upstream of the check valve in the passage from the purge control valve 4 side to the intake manifold 20. According to the connecting part assembly 8 that forms a branching path in this way, piping can be installed so as to avoid surrounding parts, vibration transmission from surrounding parts can be suppressed, and effective use of installation space can be achieved. Contributes to planning.

  The connecting component assembly 108 includes the connecting device 6, the first check valve 3 mounted on the first mounting portion 60, and the second check valve 5 mounted on the second mounting portion 61. And the tubular member 7 mounted on the third mounting portion 62. According to this, the connection component assembly 108 which can be mounted on the evaporated fuel processing system of the first embodiment can be provided. The connecting component assembly 108 further includes a passage in which a downstream side of the first check valve 3 is bent and a downstream side of the second check valve 5 extends linearly in a passage from the purge control valve 4 side to the intake manifold 20. Can provide. According to this connecting part assembly 108, the flow resistance of the evaporated fuel can be suppressed, and a passage forming with reduced transverse space and a passage avoiding surrounding parts can be achieved, and vibration transmission from surrounding parts can be prevented. Contributes to control and effective use of installation space.

  The connecting component assembly 208 includes the connecting device 6, the purge control valve 4 mounted on the first mounting portion 60, the first check valve 3 mounted on the second mounting portion 61, and the third. The second check valve 5 is mounted on the mounting portion 62 of the second check valve 5. According to this, the connection component assembly 208 that can be mounted on the evaporated fuel processing system of the first embodiment can be provided. The connecting part assembly 208 can further provide a passage in which the evaporated fuel branches to a reverse flow upstream of the check valve in the passage from the purge control valve 4 to the intake manifold 20. According to this connecting component assembly 208, the purge control valve 4 and the check valve are connected via the connecting device 6, so that the installation space between them can be reduced. According to the connecting part assembly 208 that forms a branch passage in this way, piping can be installed so as to avoid surrounding parts, and vibration transmission from surrounding parts can be suppressed and installation space can be effectively used. It contributes to doing.

  The connecting component assembly 308 includes the connecting device 6, the first check valve 3 mounted on the first mounting portion 60, and the second check valve 5 mounted on the second mounting portion 61. And the purge control valve 4 mounted on the third mounting portion 62. According to this, the connection component assembly 308 which can be mounted on the evaporated fuel processing system of the first embodiment can be provided. Since the connecting part assembly 308 connects the purge control valve 4 and the check valve via the connecting device 6, the installation space between them can be reduced. The connecting part assembly 308 further has a path in which the downstream side of the first check valve 3 is bent and the downstream side of the second check valve 5 extends linearly in a path from the purge control valve 4 side to the intake manifold 20. Can provide. According to the connecting part assembly 308, the flow resistance of the evaporated fuel can be suppressed, and a passage formation that suppresses the space in the transverse direction and a passage formation that avoids the surrounding parts can be achieved, and vibration transmission from the surrounding parts can be prevented. Contributes to control and effective use of installation space.

(Second Embodiment)
A second embodiment will be described with reference to FIGS. The configuration, operation, and effects not particularly described in the second embodiment are the same as those in the first embodiment, and only differences from the first embodiment will be described below.

  The second embodiment differs from the first embodiment in the evaporated fuel processing system and the connecting part assembly. The evaporated fuel processing system shown in FIG. 6 is different from the evaporated fuel processing system of the first embodiment in that it does not have a branch passage and a second check valve 5. Therefore, in 2nd Embodiment, the component connected with the connection apparatus 6 will differ from 1st Embodiment. In the connection component assembly of the second embodiment, the lid member 9 is attached to one of the plurality of attachment portions. The lid member 9 is a member that closes the mounting portion and blocks a passage extending from the internal passage 6a1 to the outside of the coupling device 6.

  FIG. 7 shows a first example of a connecting part assembly applicable in the evaporated fuel processing system of the second embodiment. As shown in FIG. 7, the connecting part assembly 408 includes a connecting device 6 similar to the example shown in FIG. 2, two tubular members 7 and a lid member 9 connected via the connecting device 6, and a connecting device. 6 and a first check valve 3 housed in 6. In FIG. 7, elements denoted by the same reference numerals as those in FIG. 2 have the same configurations as those in FIG. 2, and the configurations, operations, and effects that are not particularly described below are the same as those described above with respect to the connecting component assembly 8. Hereinafter, regarding the connection component assembly 408, only differences from the connection component assembly 8 will be described.

  The connection component assembly 408 is different from the connection component assembly 8 in that the lid member 9 is installed on the third mounting portion 62. In other words, since the applied system does not have a branch passage, the connecting part assembly 408 forms a passage wall by the lid member 9 so as to block the passage branched from the relay passage. Such a lid member 9 is one of various components that form an evaporative fuel passage. The tubular member 7 attached to the first attachment part 60 is connected to the pipe 18 and communicates with the throttle valve 21 via the pipe 18, and the tubular member 7 attached to the second attachment part 61 is It is connected to the relay pipe 19 and communicates with the purge control valve 4 via the relay pipe 19.

  The first check valve 3 is adjacent to the tubular member 7 and is provided in a crossing or orthogonal direction. The first check valve 3 is provided to face the lid member 9 with the internal passage 6a1 therebetween. According to this configuration, the passage from the purge control valve 4 through the first check valve 3 to the fuel outflow passage in the pipe 18 can be formed to be bent halfway.

  FIG. 8 shows a second example of a connecting part assembly applicable to the evaporated fuel processing system of the second embodiment. As shown in FIG. 8, the connecting component assembly 508 includes a connecting device 6 similar to the example shown in FIG. 2, two tubular members 7 and a lid member 9 connected via the connecting device 6, and a connecting device. 6 and a first check valve 3 housed in 6. 8, the elements denoted by the same reference numerals as those in FIGS. 2 and 7 have the same configurations as those in FIGS. 2 and 7, and the configurations, operations, and effects not particularly described below relate to the connecting component assemblies 8 and 408. This is the same as described above. Hereinafter, regarding the connecting part assembly 508, only the points different from the connecting part assemblies 8 and 408 will be described.

  The connecting part assembly 508 is different from the connecting part assembly 408 in the mounting portion where the lid member 9 and the tubular member 7 are installed. In other words, the connecting component assembly 508 is different from the connecting component assembly 408 in the places where the lid member 9 and the tubular member 7 are installed in the connecting device 6. The lid member 9 is attached to the first attachment portion 60. An attachment 63 provided with the first check valve 3 is attached to the third attachment portion 62. The tubular member 7 mounted on the second mounting portion 61 is connected to the pipe 18 and communicates with the throttle valve 21 via the pipe 18. The tubular member 7 attached to the third attachment portion 62 is connected to the relay pipe 19 and communicates with the purge control valve 4 via the relay pipe 19.

  The first check valve 3 is adjacent to the lid member 9 and is provided in a direction intersecting or orthogonal to the first check valve 3. The first check valve 3 is provided so as to face the tubular member 7 with the internal passage 6a1 interposed therebetween. According to this configuration, since the passage from the purge control valve 4 to the fuel outflow passage in the pipe 18 via the first check valve 3 can be formed in a straight line, the transverse space is suppressed. Aisle installation can be realized.

  FIG. 9 shows a third example relating to a connecting part assembly applicable in the evaporated fuel processing system of the second embodiment. As shown in FIG. 9, the connecting component assembly 608 includes a connecting device 6 similar to the example shown in FIG. 2, one tubular member 7 connected via the connecting device 6, a lid member 9, and a purge control valve. 4 and a first check valve 3 accommodated in the coupling device 6. 9, elements having the same reference numerals as those in FIGS. 2, 4 and 7 have the same configuration as the elements in each figure, and the components, operations, and effects not particularly described below will be described in connection component assemblies 8, 208,. This is the same as described above with respect to 408. Hereinafter, regarding the connection component assembly 508, only the points different from the connection component assemblies 8, 208, and 408 will be described.

  The connection component assembly 608 is different from the connection component assembly 408 in that the purge control valve 4 is mounted on the first mounting portion 60. The purge control valve 4 is mounted on the first mounting portion 60 similarly to the connecting component assembly 208. An attachment 63 on which the first check valve 3 is installed is mounted on the second mounting portion 61 in the same manner as the connecting component assembly 208. The lid member 9 is attached to the third attachment portion 62 in the same manner as the connection component assembly 408.

  According to the configuration in which the purge control valve 4 is adjacent to the first check valve 3 and is provided in an intersecting or orthogonal direction, the purge control valve 4 is piped from the purge control valve 4 via the first check valve 3. The passage leading to the fuel outflow passage in 18 can be formed to be bent halfway.

  FIG. 10 shows a fourth example relating to a connecting part assembly applicable in the evaporated fuel processing system of the second embodiment. As shown in FIG. 10, the connecting component assembly 708 includes a connecting device 6 similar to the example shown in FIG. 2, one tubular member 7 connected via the connecting device 6, a lid member 9, and a purge control valve. 4 and a first check valve 3 accommodated in the coupling device 6. 10, elements having the same reference numerals as those in FIGS. 2 and 10 have the same configuration as the elements in each figure, and the above-described contents related to the connecting component assemblies 8 and 608 are described in regard to configurations, operations, and effects that are not particularly described below. It is the same. Hereinafter, regarding the connection component assembly 708, only the points different from the connection component assemblies 8 and 608 will be described.

  The connecting part assembly 708 is different from the connecting part assembly 608 in the mounting portion where the purge control valve 4 and the lid member 9 are mounted. The lid member 9 is mounted on the first mounting portion 60 in the same manner as the connecting component assembly 508. An attachment 63 on which the first check valve 3 is installed is attached to the second attachment portion 61 in the same manner as the connection component assembly 608. The purge control valve 4 is mounted on the third mounting portion 62.

  The first check valve 3 is adjacent to the lid member 9 and provided in a crossing or orthogonal direction, and is provided so as to face the purge control valve 4 across the internal passage 6a1. According to such a configuration, the passage from the purge control valve 4 to the fuel outflow passage in the pipe 18 via the first check valve 3 can be formed linearly. For example, the passage from the purge control valve 4 to the first check valve 3 can be installed in a state where the space in the direction crossing the passage is suppressed.

  The connecting component assembly 408 is connected to the connecting device 6, the tubular member 7 attached to the first attaching portion 60, the check valve attached to the second attaching portion 61, and the third attaching portion 62. And a lid member 9 that is mounted. According to this, the connection component assembly 408 which can be mounted in the evaporated fuel processing system of the second embodiment can be provided. The connecting part assembly 408 can further provide a passage that bends upstream of the check valve in the passage from the purge control valve 4 to the intake manifold 20. According to the connecting part assembly 408 that forms the bending path in this way, piping can be installed so as to avoid surrounding parts, vibration transmission from surrounding parts can be suppressed, and effective use of installation space can be achieved. Contributes to planning.

  The connecting component assembly 508 includes the connecting device 6, the lid member 9 mounted on the first mounting portion 60, the first check valve 3 mounted on the second mounting portion 61, and the third And a tubular member 7 attached to the attachment portion 62. According to this, the connection component assembly 508 which can be mounted in the evaporated fuel processing system of the second embodiment can be provided. The connecting part assembly 508 can further provide a straight passage from the purge control valve 4 to the intake manifold 20 via the check valve. According to the connecting part assembly 508 having such a passage, the flow resistance of the evaporated fuel can be suppressed, and the installation space in the transverse direction can be suppressed with respect to the entire passage, thereby contributing to the effective use of the installation space.

  The connecting component assembly 608 includes the connecting device 6, the purge control valve 4 mounted on the first mounting portion 60, the lid member 9 mounted on the second mounting portion 61, and the third mounting portion 62. And a check valve attached to the. According to this, the connection component assembly 608 which can be mounted on the evaporated fuel processing system of the second embodiment can be provided. The connecting component assembly 608 can be installed in a direction crossing the purge control valve 4 and the check valve in a passage from the purge control valve 4 to the intake manifold 20. According to such a connecting part assembly 608, the purge control valve 4 and the check valve are connected via the connecting device 6, so that the installation space between them can be reduced, and the installation space in the transverse direction with respect to the passage can be reduced. Therefore, it is possible to provide a component assembly that fits the situation where the

  The connecting component assembly 708 is connected to the connecting device 6, the lid member 9 mounted on the first mounting portion 60, the check valve mounted on the second mounting portion 61, and the third mounting portion 62. And a purge control valve 4 mounted. According to this, the connection component assembly 708 which can be mounted in the evaporated fuel processing system of the second embodiment can be provided. The connecting component assembly 708 can further provide a linear passage from the purge control valve 4 to the check valve. According to this connecting component assembly 708, the purge control valve 4 and the check valve are connected via the connecting device 6, so that the installation space between them can be reduced, and the check port is connected to the check port from the output port 41a of the purge control valve 4. The flow resistance of the evaporated fuel flowing down to the downstream side of the valve can be suppressed.

(Third embodiment)
A third embodiment will be described with reference to FIG. The configuration, operation, and effects not particularly described in the third embodiment are the same as those in the above-described embodiment, and only differences from the above-described embodiment will be described below.

  The third embodiment is different from the first embodiment in the coupling device 106 and the coupling component assembly 808. As shown in FIG. 11, the connecting device 106 is different from the connecting device 6 in that it has four mounting portions. Therefore, the connecting component assembly 808 is an assembly configured by mounting components to four mounting portions so as to be selectable.

  Similar to the coupling device 6, the coupling device 106 contributes to efficiently and rationally installing various components, pipes, and the like in a narrow space such as an engine compartment or to a desired installation state. The coupling device 106 includes a housing 6a having an internal passage 6a1 through which evaporated fuel flowing out of the canister 16 flows. The coupling device 106 includes a first mounting portion 60, a second mounting portion 61, a third mounting portion 62, and a fourth mounting portion 64 that are formed integrally with the housing 6a.

  The first mounting portion 60, the second mounting portion 61, the third mounting portion 62, and the fourth mounting portion 64 have the same shape portions on which various components can be mounted. The fourth mounting portion 64 has the same shape portion as described above so that the same components that can be mounted on the first mounting portion 60, the second mounting portion 61, and the third mounting portion 62 can be attached. Is provided. Therefore, the connecting device 106 is configured such that each mounting portion has the same shape portion that can mount the same component on any of the four mounting portions. Since the same shape portion is shaped so that the component can be mounted even at a position where the component is rotated and displaced around its axis, a plurality of components whose components are rotated and displaced around the axis with respect to the fourth mounting portion 64 It can be mounted at the position. The same shape portion in the fourth mounting portion 64 also has, for example, a free circular shape and a regular polygon shape that can be mounted in a state of being angularly displaced by a predetermined angle.

  The fourth mounting portion 64 is provided in the coupling device 106 so as to face the third mounting portion 62 with the housing 6a interposed therebetween. The fourth mounting portion 64 has a passage axis that is parallel to the third mounting portion 62. The fourth mounting portion 64 forms a flange portion and a cylindrical portion 64b on which component parts can be mounted, and has an opening portion 64a communicating with the internal passage 6a1 inside the flange portion. The flange portion is located on the distal end side of the fourth mounting portion 64, and is provided integrally with the cylindrical portion 64b that connects the opening 64a and the internal passage 6a1. The cylindrical portion 64b is a portion that is provided integrally with the housing 6a on the base side of the fourth mounting portion 64, and integrally connects the housing 6a and the flange portion. Since the cylindrical part 64b has a predetermined axial length extending from the base part connected to the housing 6a and the tip side part connected to the flange part, it has a columnar internal space communicating with the internal passage 6a1.

  The opening 64 a in the fourth mounting portion 64 opens in a direction intersecting or orthogonal to both the opening 61 a in the second mounting portion 61 and the opening 62 a in the third mounting portion 62. The opening 60 a in the first mounting part 60 opens in the opposite direction to the opening 64 a in the fourth mounting part 64.

  The first mounting portion 60, the second mounting portion 61, the third mounting portion 62, and the fourth mounting portion 64 have, for example, at least flange portions that have the same shape. Furthermore, it is preferable that the first mounting portion 60, the second mounting portion 61, the third mounting portion 62, and the fourth mounting portion 64 have the same shape in the flange portion and the cylindrical portion. Each of the cylindrical portions 60b, 61b, 62b, and 64b can be provided with an attachment 63 having the same shape inside.

  FIG. 11 shows a connecting part assembly 808 included in the evaporated fuel processing system according to the first embodiment. As shown in FIG. 11, the connecting component assembly 808 is accommodated in the connecting device 106, three tubular members 7 and one lid member 9 that are connected via the connecting device 106, and the connecting device 6. A first check valve 3 and a second check valve 5 are provided. 11, elements having the same reference numerals as those in FIG. 2 have the same configurations as those in FIG. The configurations, operations, and effects that are not particularly described below are the same as those described above with respect to the connecting part assembly 8. Hereinafter, only differences between the connection component assembly 808 and the connection component assembly 8 will be described.

  The connecting component assembly 808 is different from the connecting component assembly 8 in that the connecting component assembly 808 has a fourth mounting portion 64 and the lid member 9 is mounted on the fourth mounting portion 64. Other configurations of the connecting part assembly 808 are the same as those of the connecting part assembly 8 described above. With the configuration in which the lid member 9 is mounted on the fourth mounting portion 64, the opening portion 64a communicating with the internal passage 6a1 is closed by the lid member 9, so that the lid member 9 functions as a passage wall of the evaporated fuel passage. It is a component.

(Other embodiments)
The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiment are omitted. The disclosure encompasses parts, element replacements, or combinations between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. The technical scope disclosed is indicated by the description of the scope of claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims.

  In the first embodiment, the connection device 6 including three mounting portions has been described. However, the components included in each example of the connection component assembly disclosed in the first embodiment are only examples disclosed in the second embodiment. Instead, it may be configured to be attached to the coupling device 106. As described above, the connecting device that can achieve the object disclosed in the specification may have three or four or more mounting portions.

  The connecting part assembly capable of achieving the object disclosed in the specification is not limited to the examples shown in the above-described embodiments. Further, the component parts included in the connecting part assembly are not limited to the examples shown in the above-described embodiments.

3 ... 1st check valve (component, check valve), 4 ... Purge control valve (component),
5 ... 2nd check valve (component), 6,106 ... Connecting device, 6a ... Housing 6a1 ... Internal passage, 7 ... Tubular member (component)
DESCRIPTION OF SYMBOLS 9 ... Lid member (component), 16 ... Canister 18 ... Piping (evaporated fuel passage), 19 ... Relay piping (evaporated fuel passage)
19a ... Branch piping (evaporative fuel passage)
60... First mounting portion (mounting portion) 61. Second mounting portion (mounting portion)
62 ... Third mounting portion (mounting portion), 64 ... Fourth mounting portion (mounting portion)
60a, 61a, 62a, 64a ... opening 63 ... attachment, 63a ... support part

Claims (17)

A connecting device (6; 106) installed in an evaporated fuel passage (18, 19, 19a) through which evaporated fuel desorbed from the canister (16) flows toward the engine;
A housing (6a) having an internal passage (6a1) through which the evaporated fuel flows;
A mounting part integrally formed in the housing by forming openings (60a, 61a, 62a; 64a) communicating with the internal passages, and the components (3,4, 4) installed in the evaporative fuel passage 5, 7 and 9) each having three or four mounting portions (60, 61, 62; 64) each having the same shape portion that can be mounted;
A coupling device comprising:   The connecting device according to claim 1, wherein the three mounting parts are a first mounting part (60), a second mounting part (61), and a third mounting part (62).   The coupling device according to claim 1, wherein the mounting portion has the opening that opens in a different direction with respect to the opening of the other mounting portion.   The connecting device according to any one of claims 1 to 3, wherein a common attachment (63) can be installed in each of the three or four mounting portions.   The connection device according to claim 4, wherein the attachment includes a support portion (63c) capable of supporting the check valve (3).   The connecting device according to any one of claims 1 to 5, wherein the mounting portion includes the same shape portion that enables mounting at a position where the component is rotationally displaced about an axis. .   The second mounting portion and the third mounting portion are in an opposing relationship facing each other across the internal passage, and the first mounting portion includes the second mounting portion and the third mounting portion. The coupling device according to claim 2, wherein the opening portion opens in a direction intersecting with a facing direction.   The coupling device according to claim 1 or 2, comprising a check valve (3; 5) and an attachment (63) for supporting the check valve. A coupling device according to claim 2 or claim 7,
A first component mounted on the first mounting portion;
A second component mounted on the second mounting portion;
A third component mounted on the third mounting portion;
A connecting part assembly comprising: The first part is a tubular member (7);
The second part is a first check valve (3);
10. A connecting part assembly according to claim 9, wherein the third part is a second check valve (5). The first part is a first check valve (3);
The second part is a second check valve (5);
10. The connecting part assembly according to claim 9, wherein the third part is a tubular member (7). The first part is a purge control valve (4);
The second part is a first check valve (3);
10. A connecting part assembly according to claim 9, wherein the third part is a second check valve (5). The first part is a first check valve (3);
The second part is a second check valve (5);
10. The connecting part assembly according to claim 9, wherein the third part is a purge control valve (4). The first part is a tubular member (7);
The second part is a check valve (3);
10. The connecting part assembly according to claim 9, wherein the third part is a lid member (9). The first part is a lid member (9);
The second part is a check valve (3);
10. The connecting part assembly according to claim 9, wherein the third part is a tubular member (7). The first part is a purge control valve (4);
The second part is a lid member (9);
10. The connecting part assembly according to claim 9, wherein the third part is a check valve (3). The first part is a lid member (9);
The second part is a purge control valve (4);
10. The connecting part assembly according to claim 9, wherein the third part is a check valve (3).

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