JP2021095893A - Purge control valve device - Google Patents

Abstract

To provide a purge control valve device aiming for resin flow in a solenoid portion.SOLUTION: A purge valve 3 is equipped with a solenoid housing that is a resin molding. The solenoid housing is an inflow side housing 31 that resin-molds and contains both of a first solenoid portion and a second solenoid portion. The inflow side housing 31 is equipped with a thickness reducing group 51 including plural numbers of thickness reducing portions 51a formed between the first solenoid portion and the second solenoid portion. A resin injection gate portion 1GT is provided at a center portion on an axial end surface that resin-molds the first solenoid portion, in the inflow side housing 31. A resin injection gate portion 2GT is provided at a center portion on an axial end surface that resin-molds the second solenoid portion, in the inflow side housing 31.SELECTED DRAWING: Figure 6

Description

The disclosure herein relates to a purge control valve device.

Patent Document 1 discloses a purge control valve device including two housings each containing one solenoid valve. The purge control valve device of Patent Document 1 includes two housings containing solenoid valves and two seat valve members each having a valve seat on which each solenoid valve is seated.

Japanese Patent No. 5717876

When molding a housing containing two solenoid valves, there is a problem that the solenoid portion constituting the solenoid valves has a narrow passage through which the resin flows, which makes it difficult for the resin material to flow.

One of the purposes disclosed in this specification is to provide a purge control valve device for measuring resin flow in a solenoid unit.

The plurality of aspects disclosed herein employ different technical means to achieve their respective objectives. Further, the scope of claims and the reference numerals in parentheses described in this section are examples showing the correspondence with the specific means described in the embodiment described later as one embodiment, and limit the technical scope. is not it.

One of the disclosed purge control valve devices is an inflow port (31a) into which the evaporated fuel flowing out from the canister (13) flows in, an outflow port (32a) in which the evaporated fuel flows out toward the engine (2), and the like. A first internal passage (43a) and a second internal passage (43b), which are a part of an internal passage connecting the inflow port and the outflow port, and a first valve body (42a) capable of opening and closing the first internal passage. A first solenoid part (37) that generates an electromagnetic force to displace, a second solenoid part (38) that generates an electromagnetic force that displaces a second valve body (42b) that can open and close the second internal passage, and resin molding. It is a product, and includes a solenoid housing (31) in which both the first solenoid part and the second solenoid part are resin-molded and built-in.
The solenoid housing includes a meat stealing portion group (51; 151; 251; 351) including a plurality of meat stealing portions formed between the first solenoid portion and the second solenoid portion.

According to this device, due to the presence of the meat stealing portion group formed between the solenoid portion and the solenoid portion, it is possible to form a resin flow that is difficult to flow between the two solenoid portions during molding. Due to this resin flow characteristic, it is possible to promote the resin flow to the resin mold portion of each solenoid portion. Therefore, it is possible to provide a solenoid housing in which the resin can be easily filled in the narrow resin passage formed between the parts in each solenoid portion and the strength can be ensured. From the above, it is possible to provide a purge control valve device that measures resin flow in the solenoid unit.

It is a block diagram of the evaporative fuel processing apparatus provided with the purge control valve apparatus of 1st Embodiment. It is a partial cross-sectional view of the purge control valve device which looked at the 3rd attachment part from the front. It is a rear view of the purge control valve device. It is a side view of the purge control valve device which looked at the 2nd attached part from the front. It is a side view of the purge control valve device which saw the 1st attached part from the front. It is an external view of the inflow side housing in a purge control valve device. It is an external view of the purge control valve device seen from the outflow side housing side. It is a schematic diagram which shows the positional relationship of two solenoid valves, an inflow port and an outflow port. It is sectional drawing in the IX-IX cross section of FIG. FIG. 5 is a cross-sectional view taken along the line XX of FIG. It is an external view of the inflow side housing which concerns on 2nd Embodiment. It is an external view of the inflow side housing which concerns on 3rd Embodiment. It is an external view of the inflow side housing which concerns on 4th Embodiment. It is an external view of the inflow side housing which concerns on 5th Embodiment. It is an external view of the inflow side housing which concerns on 6th Embodiment. It is an external view of the inflow side housing which concerns on 7th Embodiment.

Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each form, the same reference numerals may be attached to the parts corresponding to the items described in the preceding forms, and duplicate explanations may be omitted. When only a part of the configuration is described in each form, the other forms described above can be applied to the other parts of the configuration. Not only the combination of the parts that clearly indicate that the combination is possible in each embodiment, but also the combination of the embodiments even if it is not specified if there is no particular problem in the combination. It is also possible.

<First Embodiment>
The first embodiment will be described with reference to FIGS. 1 to 10. The purge control valve device is used in the evaporative fuel processing device 1 which is an evaporative fuel purging system mounted on a vehicle. The purge valve 3 is an example of a purge control valve device. As shown in FIG. 1, the evaporative fuel processing device 1 supplies HC gas or the like in the fuel adsorbed on the canister 13 to the intake passage of the engine 2. This makes it possible to prevent the evaporated fuel from the fuel tank 10 from being released into the atmosphere. The evaporative fuel processing device 1 includes an intake system of the engine 2 constituting an intake passage of the engine 2 which is an internal combustion engine, and an evaporative fuel purge system for supplying evaporative fuel to the intake system of the engine 2.

The evaporated fuel introduced into the intake passage by the intake pressure of the engine 2 is mixed with the combustion fuel supplied to the engine 2 from the injector or the like and burned in the combustion chamber of the engine 2. The engine 2 mixes and burns at least the evaporated fuel desorbed from the canister 13 and the combustion fuel. In the intake system of the engine 2, the intake pipe 21 constituting the intake passage is connected to the intake manifold 20. This intake system is further configured by providing a throttle valve 25, an air filter 24, and the like in the middle of the intake pipe 21.

In the evaporative fuel purge system, the fuel tank 10 and the canister 13 are connected by a pipe 11 constituting a vapor passage. In the evaporative fuel purge system, the canister 13 and the intake pipe 21 are connected to each other via a pipe 14 constituting a purge passage and a purge valve 3. Further, a purge pump may be provided in the middle of the purge passage. The air filter 24 is provided in the upstream portion of the intake pipe 21 and captures dust, dust, etc. in the intake pipe. The throttle valve 25 is an intake air amount adjusting valve that adjusts the opening degree of the inlet portion of the intake manifold 20 to adjust the intake air amount flowing into the intake manifold 20. The intake air passes through the intake air passage, flows into the intake manifold 20, is mixed with the combustion fuel injected from the injector or the like so as to have a predetermined air-fuel ratio, and is burned in the combustion chamber.

The fuel tank 10 is a container for storing fuel such as gasoline. The fuel tank 10 is connected to the inflow portion of the canister 13 by a pipe 11 forming a vapor passage. The canister 13 is a container in which an adsorbent such as activated carbon is sealed. The canister 13 takes in the evaporated fuel generated in the fuel tank 10 through the vapor passage and temporarily adsorbs it to the adsorbent.

The canister 13 is integrally provided with a valve module 12, or is provided via a duct portion. The valve module 12 includes a canister closed valve and an internal pump. The canister close valve opens and closes the suction section for sucking in fresh air from the outside. The internal pump is a pump capable of releasing gas to the atmosphere and inhaling the atmosphere. By providing the canister 13 with a canister close valve, atmospheric pressure can be applied to the inside of the canister 13. The canister 13 can easily desorb, that is, purge the evaporated fuel adsorbed on the adsorbent by the sucked fresh air.

The purge valve 3 is a purge control valve device including a valve body that opens and closes an internal passage that is a part of the purge passage. The purge control valve device has a plurality of solenoid valves inside. The purge valve 3 can allow and block the supply of evaporative fuel from the canister 13 to the engine 2. The configuration of the purge valve 3 will be described. The purge valve 3 has a solenoid valve that opens and closes each of a plurality of internal passages provided inside the housing. The purge valve 3 includes one inflow port 31a and one outflow port 32a. The inflow port 31a communicates with the canister 13 via the connected pipe 14. The inflow port 31a has an inflow passage 31a1 into which the evaporated fuel flowing out from the canister 13 flows in. The outflow port 32a communicates with the intake pipe 21 via a connected pipe. The outflow port 32a has an outflow passage 32a1 in which the evaporated fuel flows out toward the engine 2. Inside the purge valve 3, two internal passages branching on the downstream side of the inflow port 31a are provided. These two internal passages are further downstream and are concentrated in the outflow port 32a. Each of the two internal passages is a passage that is individually opened and closed by a solenoid valve.

When the purge valve 3 is opened by the control device while the vehicle is traveling, a difference between the negative pressure in the intake manifold 20 generated by the suction action of the piston and the atmospheric pressure applied to the canister 13 occurs. Due to this pressure difference, the vapor fuel adsorbed in the canister 13 flows through the purge passage and the purge valve 3 and is sucked into the intake manifold 20 through the intake pipe 21.

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 2 and burned in the cylinder of the engine 2. In the cylinder of the engine 2, 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 adjusts the purge amount of the evaporated fuel so that the predetermined air-fuel ratio is maintained even if the evaporated fuel is purged by controlling the purge valve 3 with duty energization.

As shown in FIGS. 2, 8 and 10, the purge valve 3 incorporates a first solenoid valve 37 and a second solenoid valve 38 as an example of a plurality of solenoid valves. Each of the first solenoid valve 37 and the second solenoid valve 38 is composed of similar components. Each of the first solenoid valve 37 and the second solenoid valve 38 has a solenoid portion 41, a valve body 42, and a tubular portion 331. The first solenoid valve 37 includes a first valve body 42a and a first solenoid unit that generates an electromagnetic force that displaces the first valve body 42a. The first valve body 42a can open and close the first internal passage 43a communicating with the inside of one tubular portion 331. The second solenoid valve 38 includes a second valve body 42b and a second solenoid portion that generates an electromagnetic force that displaces the second valve body 42b. The second valve body 42b can open and close the second internal passage 43b communicating with the other tubular portion 331. A valve seat 332 is provided at the end of the tubular portion 331 so that the valve body is seated in the closed state and separated in the open state. The first solenoid valve 37 and the second solenoid valve 38 are, for example, normally closed type valves controlled to be in a closed state in which the internal passage is closed when no voltage is applied and in an open state in which the internal passage is opened when a voltage is applied.

The solenoid portion 41 of each solenoid valve includes a coil portion 410, a bobbin 411, a fixed core 413, a movable core 412, a shaft member 415, a spring 414, and the like. The solenoid portion 41 is covered with a coating portion formed of a resin material. The covering is integrally formed with the housing. It can be said that the solenoid portion 41 is resin-molded by the covering portion. The first solenoid portion and the second solenoid portion are resin-molded and are built in the inflow side housing 31. The inflow side housing 31 is an example of a solenoid housing having a built-in solenoid portion. The central axis of the solenoid unit 41 is also the central axis of the solenoid valve. Since the solenoid portion 41 has a higher specific gravity than the housing, the solenoid portion tends to vibrate with respect to an external force.

The movable core 412 is made of a material that conducts magnetism, for example, a magnetic material. The movable core 412, which is a tubular body, surrounds the shaft member 415 and the spring 414 in a state of being interpolated from the open end. The valve body 42 is made of an elastically deformable material such as rubber. The valve body 42 is attached to the movable core 412 so as to sandwich the head of the movable core 412 from both sides between the base portion and the valve portion, and is integrated with the movable core 412.

The fixed core 413 includes an outer cylinder portion 413a and an inner cylinder portion that are integrally formed. The inner cylinder portion of the fixed core 413 slidably supports the movable core 412 that moves in the axial direction against the urging force of the spring 414 by an electromagnetic force. The outer cylinder portion 413a is provided so as to cover the outer peripheral side of the bobbin 411 and the coil portion 410. As shown in FIG. 6, the outer cylinder portion 413a corresponds to the outer peripheral portion 37a of the first solenoid portion and the outer peripheral portion 38a of the second solenoid portion. The outer peripheral portion 37a and the outer peripheral portion 37a are illustrated by a broken line circle in FIG.

The bobbin 411 is provided coaxially with the movable core 412, the spring 414, and the shaft member 415 in a state of being housed inside. The bobbin 411 is formed of a resin material in a cylindrical shape and is provided inside the outer cylinder portion 413a. The spring 414 has a tubular portion of the movable core 412 in a state where one end in the axial direction is in contact with the shaft member 415 fixed to the fixed core 413 and the other end in the axial direction is in contact with the head of the movable core 412. It is provided inside. Therefore, the spring 414 provides an urging force to move the movable core 412 toward the valve seat 332. The fixed core 413 fixes the shaft member 415 and is assembled to the bobbin 411. The fixed core 413, the shaft member 415, the movable core 412, and the valve body 42 are installed so that their axes are coaxial. The shaft member 415 is formed of, for example, nylon or nylon reinforced by containing glass fiber. The fixed core 413 and the movable core 412 are made of a material that allows magnetism to pass through. The fixed core 413 is formed of, for example, a carbon steel wire for cold heading. Each solenoid valve opens and closes the internal passage 43 by driving the valve body 42 according to the balance between the electromagnetic force generated when the coil portion 410 is energized and the urging force of the spring 414.

The housing is provided with a connector 31c extending from the solenoid portion 41 side of the first solenoid valve 37 in a direction orthogonal to the central axis of the solenoid portion 41. The housing is provided with a connector 31d extending from the solenoid portion 41 side of the second solenoid valve 38 in a direction orthogonal to the central axis of the solenoid portion 41. Each connector has a built-in terminal for energizing the coil portion 410. The connector is a resin molded portion that supports a terminal that penetrates the bottom of the housing and projects outward. The terminal is an energizing terminal that is electrically connected to the coil portion 410. A power supply side connector for supplying power from a power supply unit or a current control device is connected to the connector. When the connector and the power supply side connector are connected and the terminal is electrically connected to the current control device or the like, the purge valve 3 can control the current energizing the coil portion 410.

As shown in FIGS. 2 to 10, the purge valve 3 includes an inflow side housing 31, an outflow side housing 32, and a seat valve member 33 as housings. The inflow side housing 31, the outflow side housing 32, and the seat valve member 33 are made of a resin material. The inflow side housing 31 includes an inflow port 31a into which the evaporated fuel from the canister 13 flows in, and an inflow side chamber chamber 31b provided downstream of the inflow port 31a. The inflow side housing 31 is provided with a flange portion 31f. The inflow side housing 31 and the outflow side housing 32 are integrally joined by overlapping the flange portions of both with the outer peripheral edge of the seat valve member 33 sandwiched between them. The flange portion 31f of the inflow side housing 31 is a portion that radially protrudes from the outer peripheral edge of the downstream opening located at the downstream end portion of the inflow side housing 31. The flange portion 31f is bonded to the flange portion 32f of the outflow side housing 32 by welding or adhesion.

The inflow port 31a is a tubular portion having an inflow passage for fluid inside, and is located at an upstream end portion of the inflow side housing 31. The inflow port 31a is connected to a pipe 14 forming a purge passage in the evaporative fuel processing device 1, and communicates with the canister 13 via the pipe 14.

The inflow side chamber chamber 31b communicates with the inflow passage 31a1 at the upstream end, which has a smaller passage crossing area than the inflow side chamber chamber 31b. The inflow passage 31a1 and the inflow side chamber chamber 31b are provided so as to line up in the inflow direction of the fluid in the inflow passage 31a1. The downstream end of the inflow passage 31a1 is a chamber chamber inflow portion 31a2 facing the inflow side chamber chamber 31b. As shown in FIG. 9, the upstream end of the first internal passage 43a is located in the inflow direction in which the evaporated fuel flows down the inflow passage 31a1 rather than the chamber chamber inflow portion 31a2. The inflow direction is a direction along the axial direction of the inflow port 31a. The inflow side chamber chamber 31b communicates with the first internal passage 43a and the second internal passage 43b downstream of the inflow side chamber chamber 31b. The passage crossing area in the inflow port 31a is the cross-sectional area when the inflow port 31a is cut by a plane orthogonal to the central axis of the passage. The passage crossing area of the inflow side chamber chamber 31b is the cross-sectional area when the inflow side chamber chamber 31b is cut by a plane orthogonal to the central axis of the passage formed by the inflow side chamber chamber 31b. The passage crossing area of the passage in the purge valve 3 sharply increases when the passage in the inflow port 31a advances to the inflow side chamber chamber 31b. The inflow side chamber chamber 31b provides a chamber volume that suppresses the pulsation that occurs in the purge valve 3.

The inflow side housing 31 includes a first side wall 311, a second side wall 312, a third side wall 313, and a fourth side wall 314. The inflow side housing 31 includes a connecting wall portion that faces the downstream opening and connects these side walls. As shown in FIG. 6, the connecting wall portion is a wall portion that covers the axial end portions of the first solenoid valve 37 and the second solenoid valve 38 and the inflow side chamber chamber 31b. The inflow port 31a is located closer to the outflow side housing 32 than the connecting wall portion. The inflow port 31a is located inside the connecting wall portion without protruding outward. The inflow port 31a extends along the connecting wall, the third side wall 313, and the fourth side wall 314. The inflow port 31a is provided so that the height dimension from the flange portion 31f is lower than that of the connecting wall portion.

The first side wall 311 and the second side wall 312 face each other. The third side wall 313 and the fourth side wall 314 face each other. The first side wall 311 connects the third side wall 313 and the fourth side wall 314 adjacent to each other. The second side wall 312 connects the third side wall 313 and the fourth side wall 314 adjacent to each other. The connector 31c and the connector 31d extend outward from the third side wall 313.

The inflow side housing 31 accommodates the first solenoid valve 37 and the second solenoid valve 38. As shown in FIG. 6, the first solenoid valve 37 and the second solenoid valve 38 are arranged side by side in the inflow side housing 31 on one side closer to the third side wall 313. The first solenoid valve 37 and the second solenoid valve 38 are arranged along the third side wall 313. The first solenoid valve 37 is arranged so as to be adjacent to both the first side wall 311 and the third side wall 313. The second solenoid valve 38 is arranged so as to be adjacent to both the second side wall 312 and the third side wall 313. The inflow port 31a and the inflow side chamber chamber 31b are arranged in the inflow side housing 31 on the other side opposite to the first solenoid valve 37 and the second solenoid valve 38. The inflow port 31a and the inflow side chamber chamber 31b are arranged so as to be arranged in the alignment direction of the first solenoid valve 37 and the second solenoid valve 38. The inflow side chamber chamber 31b is formed between the fourth side wall 314 and the first solenoid valve 37 and the second solenoid valve 38.

The seat valve member 33 has two tubular portions 331. Each of the two tubular portions 331 has a shape protruding from both sides of the plate-shaped portion 333. The tubular portion 331 has an upstream-side protruding portion that protrudes to the upstream side or the valve body side, and a downstream-side protruding portion that protrudes to the downstream side or the outflow port 32a side. The flange portion 33f located on the outer peripheral edge of the plate-shaped portion 333 is a portion sandwiched between the inflow side housing 31 and the outflow side housing 32. The plate-shaped portion 333 of the seat valve member 33 is a partition wall portion that separates the inflow side housing 31 side and the outflow side housing 32 side in the purge valve 3. The two tubular portions 331 are a first tubular portion 331a located on the first solenoid valve 37 side and a second tubular portion 331b located on the second solenoid valve 38 side. The flange portion 33f is sandwiched between an annular recess 317 located inside the flange portion 31f and a portion located on the inner peripheral side of the flange portion 32f. The annular recess 317 is a portion recessed from the flange portion 31f, and is provided on an inner peripheral edge portion located inside the flange portion 31f. The contact portion between the annular recess 317 and the flange portion 33f is joined by welding or adhesion.

The first tubular portion 331a has an internal first internal passage 43a and a first valve seat 332a formed at the tip thereof. The first valve body 42a is seated on the first valve seat 332a when the valve is closed. The second tubular portion 331b has an internal second internal passage 43b and a second valve seat 332b formed at the tip thereof. The second valve body 42b is seated on the second valve seat 332b when the valve is closed. These two valve seats 332 are located inside the inflow side housing 31. The downstream end portion 331a1 of the first tubular portion 331a and the downstream end portion 331b1 of the second tubular portion 331b are located inside the outflow side housing 32.

As shown in FIG. 9, the upstream end of the second internal passage 43b is located on the side opposite to the inflow direction of the fluid in the inflow passage 31a1 with respect to the chamber chamber inflow portion 31a2. The upstream end of the second internal passage 43b is located on the side opposite to the side where the first internal passage 43a is located with respect to the chamber chamber inflow portion 31a2 in the inflow direction of the fluid.

The first internal passage 43a is a passage in which the flow rate of the fluid flowing down is larger than that of the second internal passage 43b. The internal passage of the housing includes a large flow rate side passage through which the evaporated fuel flows down into the first internal passage 43a and a small flow rate side passage through which the evaporated fuel flows down into the second internal passage 43b. The large flow rate side flow path is a flow path through which the evaporated fuel flows down in the order of the inflow passage 31a1, the inflow side chamber chamber 31b, the first connecting passage 315, and the first internal passage 43a. The small flow rate side flow path is a flow path through which the evaporated fuel flows down in the order of the inflow passage 31a1, the inflow side chamber chamber 31b, the second connecting passage 316, and the second internal passage 43b. The inflow side chamber chamber 31b is a common passage in the large flow rate side flow path and the small flow rate side flow rate. The evaporated fuel is divided from the inflow side chamber chamber 31b into a flow path that flows down to the first internal passage 43a and a flow path that flows down to the second internal passage 43b.

The first connecting passage 315 is a passage connecting the first internal passage 43a and the inflow side chamber chamber 31b on the upstream side of the first internal passage 43a. The first connecting passage 315 is a passage provided closer to the inflow passage 31a1 than the first solenoid portion. A filter member 44 having a filter media unit or a net unit supported by the filter frame unit 44a is installed in the first connecting passage 315. The filter member 44 of the first connecting passage 315 collects foreign matter contained in the evaporated fuel before flowing down from the inflow side chamber chamber 31b and flowing down to the first internal passage 43a.

The second connecting passage 316 is a passage connecting the second internal passage 43b and the inflow side chamber chamber 31b on the upstream side of the second internal passage 43b. The second connecting passage 316 is a passage provided closer to the inflow passage 31a1 than the second solenoid portion. The second connecting passage 316 is formed so that the passage crossing area is smaller than that of the first connecting passage 315 and the inflow side chamber chamber 31b, respectively. With this configuration, when the evaporated fuel flows from the inflow side chamber chamber 31b into the second connecting passage 316, it flows down from the wide passage to the narrow passage, so that the pressure loss becomes large. As a result, the pressure loss of the flow path leading to the second internal passage 43b, which has a small flow rate, can be further increased. Therefore, the purge valve 3 can widen the flow rate range in the small flow rate range. A filter member 44 having a filter media unit or a net unit supported by the filter frame unit 44a is installed in the second connecting passage 316. The filter member 44 of the second connecting passage 316 collects foreign matter contained in the evaporated fuel before flowing down from the inflow side chamber chamber 31b and flowing down to the second internal passage 43b.

As shown in FIGS. 9 to 10, the first internal passage 43a and the second internal passage 43b are located on one side in the orthogonal direction orthogonal to the inflow direction of the fluid. The inflow passage 31a1 is located on the other side of the housing in the orthogonal direction. The orthogonal direction is a direction orthogonal to both the coupling direction of the inflow side housing 31 and the outflow side housing 32 and the inflow direction. The bonding direction is also the stacking direction of the inflow side housing 31 and the outflow side housing 32. According to this configuration, a large flow rate side flow path from the inflow passage 31a1 to the first internal passage 43a via the inflow side chamber chamber 31b can be extended in a direction orthogonal to the inflow direction. As a result, the chamber chamber inflow portion 31a2 and the first internal passage 43a can be arranged diagonally in the housing. Therefore, the large flow rate side flow path can be set long, and a flow path with further suppressed pressure loss can be provided.

The outflow port 32a is located between the inflow port 31a and the first internal passage 43a and the second internal passage 43b in the orthogonal direction. According to this configuration, the evaporated fuel can flow down the flow path in the orthogonal direction for a long time in the flow path from the inflow side chamber chamber 31b to the first internal passage 43a and the second internal passage 43b. Since the flow path in the orthogonal direction can be configured to be long, the flow path resistance in the large flow rate side flow path and the small flow rate side flow path can be suppressed, which can contribute to securing the flow rate. The downstream end of the first internal passage 43a is provided at a position closer to the upstream end of the outflow passage 32a1 than the downstream end of the second internal passage 43b. With this configuration, the flow path resistance of the large flow rate side flow path can be suppressed more than the flow rate resistance of the small flow rate side flow rate even in the flow path on the outflow passage 32a1 side. Therefore, it is possible to contribute to securing a large flow rate in the purge valve 3.

The purge valve 3 has a configuration in which the pressure loss is concentrated in the flow rate on the small flow rate side in the flow path from the inflow passage 31a1 to the internal passage in which the opening degree of each valve body is adjusted. The purge valve 3 provides a flow path configuration in which the flow path does not bend in the opposite direction or passes through an extremely narrow flow path for the large flow rate side flow path. The purge valve 3 provides a flow path configuration in which the flow rate resistance is larger than that of the large flow rate side flow rate by having the flow rate in the opposite direction with respect to the small flow rate side flow rate.

As shown in FIG. 10, the outflow side housing 32 surrounds the downstream side protruding portion protruding from the plate-shaped portion 333 of the seat valve member 33 in the two tubular portions 331. The first tubular portion 331a and the second tubular portion 331b have a shape extending along each other. The downstream protruding portion of the first tubular portion 331a is longer than the downstream protruding portion of the second tubular portion 331b. The first tubular portion 331a is configured such that the axial length from the valve seat to the downstream end portion 331a1 is longer than that of the second tubular portion 331b. The downstream end portion 331a1 is located at a position separated from the plate-shaped portion 333 of the seat valve member 33 from the downstream end portion 331b1. The first tubular portion 331a forms an internal passage longer than the second tubular portion 331b. Therefore, the first tubular portion 331a having a larger flow rate than the second tubular portion 331b is longer. This configuration is advantageous in securing the flow rate under the condition that the engine 2 side has a low negative pressure, and it is more efficient to lengthen the first tubular portion 331a. On the other hand, even if the second tubular portion 331b is made longer, the effect of securing the flow rate is low. Therefore, by shortening the second tubular portion 331b, the physique of the housing can be suppressed at the relevant portion, and the amount of the material forming the second tubular portion 331b can be suppressed.

The outflow side housing 32 includes an outflow port 32a for flowing out the evaporated fuel toward the intake pipe 21 and an outflow side chamber chamber 32b provided on the upstream side of the outflow port 32a. The flange portion 32f of the outflow side housing 32 is a portion that radially protrudes from the outer peripheral edge of the upstream opening located at the upstream end portion of the outflow side housing 32. The outflow side chamber chamber 32b communicates with the outflow passage 32a1 in the outflow port 32a, which has a smaller passage crossing area than the outflow side chamber chamber 32b at the downstream end. The outflow side chamber chamber 32b connects the outflow port 32a with the first internal passage 43a and the second internal passage 43b inside the housing.

The outflow port 32a is a tubular portion having a fluid outflow passage inside, and is located at the downstream end of the outflow side housing 32. The outflow port 32a communicates with the intake pipe 21 via a connected pipe. The outflow port 32a is preferably located closer to the inflow side housing 31 than the outermost wall portion forming the outflow side housing 32. The outflow port 32a is located inside the outermost wall portion without protruding outward. The outflow port 32a is arranged so as to be arranged in the alignment direction of the first solenoid valve 37 and the second solenoid valve 38. The outflow port 32a extends toward the tip along the same direction as the inflow port 31a. The outflow port 32a is provided so that the height dimension from the flange portion 32f is equal to or lower than the outermost wall portion of the outflow side housing 32.

The seat valve member 33 is welded or bonded to the inflow side housing 31 or the outflow side housing 32. The seat valve member 33 and the inflow side housing 31 or the outflow side housing 32 form a joint portion that is joined by welding or adhesion. Welding can be performed by, for example, laser welding in which resin members are welded to each other using a laser. Welding is performed by superimposing the joint portion of the seat valve member 33 and the joint portion of the housing and irradiating the seat valve member 33 with a laser to melt the joint portion of the housing. In this case, the seat valve member 33 is made of a resin material that is transparent to laser light. The housing is composed of a member that absorbs laser light by containing, for example, carbon. Adhesion can be performed, for example, by forming a laminated portion with an adhesive interposed between the joint portion of the seat valve member 33 and the joint portion of the housing, and applying heat to the laminated portion.

6 and 10 show a plurality of meat stealing portions formed in the inflow side housing 31 which is a solenoid housing. The meat stealing portion is also referred to as a lightening portion or a meatless portion that is not filled with resin in the solenoid housing of the resin molded product. The meat stealing portion is formed by recesses and holes provided at specific locations in the solenoid housing. Each meat stealing portion is formed by a recess having a predetermined depth in the axial direction from a rectangular hole portion that opens outward.

The meat stealing portion is a portion in which the resin material that has flowed into the mold from the resin injection gate in the mold does not flow when the solenoid housing is molded. In resin molding using a mold, the meat stealing portion is a portion that acts as a distribution resistance for the resin material. The meat stealing portion corresponds to a columnar portion or a block-shaped portion in, for example, a mold. Since the resin material easily flows around the meat stealing portion having low distribution resistance, the resin material is easily filled in the cavity located around the meat stealing portion in the mold. Due to the presence of the meat stealing portion 51a, the filling portion 51b is a portion where the resin material easily flows and the resin material is easily filled.

FIG. 6 is an external view of the inflow side housing 31 as viewed in the axial direction of the solenoid portion. FIG. 6 illustrates a plurality of meat stealing portions and resin injection gate portions provided in the inflow side housing 31. The resin injection gate portion 1GT is provided at the center of the axial end surface in which the first solenoid portion is resin-molded in the solenoid housing. On the surface of the solenoid housing in the central portion, traces of resin flowing into the mold from the resin injection gate portion 1GT are formed as hemispherical protrusions. The resin injection gate portion 2GT is provided at the center of the axial end surface in which the second solenoid portion is resin-molded in the solenoid housing. On the surface of the solenoid housing in the central portion, traces of resin flowing into the mold from the resin injection gate portion 2GT are formed as hemispherical protrusions.

A meat stealing portion group 51 is provided in the resin mold portion formed between the first solenoid portion and the second solenoid portion. The meat stealing portion group 51 functions as a resin flow resistance portion between the two solenoid portions during molding. The meat stealing unit group 51 includes a plurality of meat stealing units 51a. The plurality of meat stealing portions 51a are arranged side by side in the intersecting direction intersecting the arrangement direction of the first solenoid portion and the second solenoid portion. A filling portion 51b filled with a resin material is provided between the meat stealing portion 51a and the meat stealing portion 51a adjacent to each other in the intersecting direction. Like the meat stealing portion 51a, the filling portion 51b has an elongated shape in the alignment direction rather than the crossing direction. Due to this shape, the filling portion 51b and the meat stealing portion 51a have a flow promoting function of promoting resin flow from each solenoid portion to the adjacent solenoid portion at the time of molding.

The alignment direction of the first solenoid portion and the second solenoid portion may be simply referred to as the alignment direction below. The crossing direction that intersects with the alignment direction may be simply referred to as the crossing direction below. The crossing direction also includes an orthogonal direction orthogonal to the alignment direction.

The meat stealing portion 51a has an elongated hole portion as an opening end in the alignment direction with respect to the crossing direction. As shown in FIG. 10, the meat stealing portion 51a is formed by recesses having a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. The depth of the recess is the axial length from the end of the opening to the bottom surface 51a1 of the recess. The meat stealing portion 51a has a rectangular parallelepiped shape that is flat in the crossing direction. The bottom surface 51a1 of the recess is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion and the axial end portion of the second solenoid portion. The recess forming the meat stealing portion 51a has a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion.

The solenoid housing has secondary welding portions 411a and 411b, which are the portions of the resin mold portion of the solenoid portion where the parts are closest to each other. The secondary welding portion 411a and the secondary welding portion 411a correspond to a narrow resin passage through which the resin does not easily flow. An example of the secondary welding portion 411a is a portion where the fixed core 413 and the bobbin 411 are closest to each other at the solenoid portion end portion near the open end of the meat stealing portion 51a. An example of the secondary welding portion 411b is a portion where the fixed core 413 and the bobbin 411 are closest to each other at the end portion of the solenoid portion near the bottom surface 51a1 of the recess forming the meat stealing portion 51a. The secondary welded portion 411a and the secondary welded portion 411b are portions to be filled with the resin. The secondary welding portion 411a and the secondary welding portion 411b are examples of a location in the solenoid portion where the passage through which the resin flows is narrow, and it is required to prevent void defects in this portion. The plurality of meat stealing portions provided in the solenoid housing contribute to avoiding the generation of voids in the secondary welding portion.

The solenoid housing is provided with a meat stealing portion group 52 on the mounted portion side between the third mounted portion 36 and the meat stealing portion group 51. The meat stealing portion group 52 on the attached portion side functions as a flow resistance portion for the resin flowing to the third attached portion 36 side at the time of molding. The meat-stealing portion group 52 on the attached portion side includes a plurality of meat-stealing portions 52a. The plurality of meat stealing portions 52a are arranged side by side in the arrangement direction. A filling portion 52b filled with a resin material is provided between the meat stealing portion 52a and the meat stealing portion 52a adjacent to each other in the arrangement direction. A filling portion 51c filled with a resin material is provided between the meat stealing portion group 51 adjacent to each other in the intersecting direction and the meat stealing portion group 52 on the side to be attached. Like the meat stealing portion 51a, the filling portion 51c is a resin portion elongated in the alignment direction with respect to the crossing direction.

The meat stealing portion 52a has an elongated hole portion as an opening end in the intersecting direction with respect to the alignment direction. The meat stealing portion 52a is formed by a recess having a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. The depth of the recess forming the meat stealing portion 52a is the axial length from the opening end to the bottom surface of the recess. The meat stealing portion 52a has a rectangular parallelepiped shape that is flat in the alignment direction. The bottom surface of the recess forming the meat stealing portion 52a is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion and the axial end portion of the second solenoid portion. The recess forming the meat stealing portion 52a has a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. Like the meat stealing portion 52a, the filling portion 52b is a resin portion elongated in the intersecting direction with respect to the arranging direction. Due to this shape, the filling portion 52b and the meat stealing portion 52a have a flow promoting function of promoting the resin flow from between the solenoid portions to the third attached portion 36 at the time of molding.

The solenoid housing is provided with a first solenoid-side meat stealing unit group 53 at a portion located on the opposite side of the first solenoid portion from the meat-stealing unit group 51. The first solenoid-side meat stealing portion group 53 is located outside the diameter of the first solenoid portion in the solenoid housing. The meat stealing unit group 51, the first solenoid unit, and the meat stealing unit group 53 on the first solenoid side are arranged in the same arrangement direction so as to form a line. The first solenoid-side meat stealing portion group 53 functions as a resin flow resistance portion that flows from the first solenoid portion to the first attached portion 34 side during molding. The meat stealing unit group 53 on the first solenoid side includes a plurality of meat stealing units 53a. The plurality of meat stealing portions 53a are arranged side by side in the crossing direction. A filling portion 53b filled with a resin material is provided between the meat stealing portion 53a and the meat stealing portion 53a adjacent to each other in the intersecting direction.

The meat stealing portion 53a has an elongated hole portion as an opening end in the alignment direction with respect to the crossing direction. The meat stealing portion 53a is formed by a recess having a depth longer than the axial length of the first solenoid portion. The depth of the recess forming the meat stealing portion 53a is the axial length from the opening end to the bottom surface 53a1 of the recess. The meat stealing portion 53a has a rectangular parallelepiped shape that is flat in the crossing direction. The bottom surface 53a1 of the recess forming the meat stealing portion 53a is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion. The recess forming the meat stealing portion 53a has a depth longer than the axial length of the first solenoid portion. Like the meat stealing portion 53a, the filling portion 53b is a resin portion elongated in the alignment direction with respect to the crossing direction. Due to this shape, the filling portion 53b and the meat stealing portion 53a have a flow promoting function of promoting the resin flow from between the solenoid portions to the first attached portion 34 at the time of molding.

The solenoid housing is provided with a second solenoid-side meat stealing unit group 54 at a portion located on the opposite side of the meat-stealing unit group 51 around the second solenoid portion. The meat stealing portion group 54 on the second solenoid side is located outside the diameter of the second solenoid portion in the solenoid housing. The meat stealing unit group 51, the second solenoid unit, and the meat stealing unit group 54 on the second solenoid side are arranged in the same arrangement direction so as to form a line. The second solenoid-side meat stealing portion group 54 functions as a resin flow resistance portion that flows from the second solenoid portion to the second attached portion 35 side during molding. The meat stealing portion group 54 on the second solenoid side includes a plurality of meat stealing portions 54a. The plurality of meat stealing portions 54a are arranged side by side in the crossing direction. A filling portion 54b filled with a resin material is provided between the meat stealing portion 54a and the meat stealing portion 54a adjacent to each other in the intersecting direction.

The meat stealing portion 54a has an elongated hole portion as an opening end in the alignment direction with respect to the crossing direction. The meat stealing portion 54a is formed by a recess having a depth longer than the axial length of the second solenoid portion. The depth of the recess forming the meat stealing portion 54a is the axial length from the opening end to the bottom surface 54a1 of the recess. The meat stealing portion 54a has a rectangular parallelepiped shape that is flat in the crossing direction. The bottom surface 54a1 of the recess forming the meat stealing portion 54a is located closer to the outflow side housing 32 than the axial end portion of the second solenoid portion. The recess forming the meat stealing portion 54a has a depth longer than the axial length of the second solenoid portion. Like the meat stealing portion 54a, the filling portion 54b is a resin portion elongated in the alignment direction with respect to the crossing direction. Due to this shape, the filling portion 54b and the meat stealing portion 54a have a flow promoting function of promoting the resin flow from between the solenoid portions to the second attached portion 35 at the time of molding.

The solenoid housing is provided with a peripheral meat stealing unit group 55 between the meat stealing unit group 51 and the meat stealing unit group 53 on the first solenoid side around the first solenoid unit. The peripheral meat stealing portion group 55 is located outside the diameter of the first solenoid portion in the solenoid housing. The meat stealing group 51, the surrounding meat stealing group 55, and the first solenoid-side meat stealing group 53 are arranged side by side in the circumferential direction. The peripheral meat stealing portion group 55 functions as a flow resistance portion of the resin flowing out of the diameter from the first solenoid portion during molding.

The surrounding meat stealing unit group 55 includes a plurality of meat stealing units 55a. The plurality of meat stealing portions 55a are arranged side by side in the circumferential direction of the first solenoid portion. A filling portion 55b filled with a resin material is provided between the adjacent meat stealing portions 55a and the meat stealing portion 55a. The meat stealing portion 55a is formed by a recess having a depth longer than the axial length of the first solenoid portion. The depth of the recess forming the meat stealing portion 55a is the axial length from the opening end to the bottom surface of the recess. The meat stealing portion 55a has a rectangular parallelepiped shape that is flat in the peripheral direction or the radial direction of the first solenoid portion. The bottom surface of the recess forming the meat stealing portion 55a is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion. The recess forming the meat stealing portion 55a has a depth longer than the axial length of the first solenoid portion. The filling portion 55b is an elongated resin portion similar to the meat stealing portion 55a.

The purge valve 3 is fixed to a vehicle-side member or the like by a fixing means such as a bolt via a plurality of attached portions. For example, a female screw portion to be screwed into a bolt is embedded in a vehicle side member or the like. The purge valve 3 has a first attachment portion 34 that projects outward from the first side wall 311 of the inflow side housing 31. The first attachment portion 34 is a part of a solenoid housing which is a resin molded product, and is formed of resin. The first mounted portion 34 is a first solenoid-side mounted portion that protrudes from the first side wall 311 in the inflow direction. The first mounted portion 34 is provided with a mounting hole penetrating in the coupling direction in which the inflow side housing 31 and the outflow side housing 32 are overlapped with each other. The mounting hole of the first mounted portion 34 is a through hole for inserting a fixing means such as a bolt to be connected to a vehicle side member or the like.

The first mounting portion 34 is provided with a metal reinforcing member 34a that is insert-molded into the solenoid housing. The reinforcing member 34a is a tubular body and is also called a collar. The inner peripheral surface of the reinforcing member 34a may form the inner peripheral surface of the mounting hole in the first mounted portion 34. A contact surface 34b with a vehicle-side member or the like is formed on the outflow-side housing 32 side of the first mounted portion 34. The contact surface 34b preferably has an appropriate flatness in order to be grounded to a mounting portion such as a vehicle side member. The tip annular surface of the reinforcing member 34a may form a part of the contact surface 34b. The first attached portion 34 is arranged at a position biased to one side in the inflow side housing 31. The first mounting portion 34 is arranged laterally in the inflow side housing 31 so as to be aligned with the first solenoid valve 37.

The purge valve 3 has a second attachment portion 35 that projects outward from the second side wall 312 of the inflow side housing 31. The second attachment portion 35 is a part of the solenoid housing which is a resin molded product, and is formed of resin. The second mounted portion 35 is a second solenoid-side mounted portion that protrudes from the second side wall 312 in the outflow direction. The second mounting portion 35 is provided with a mounting hole penetrating in the coupling direction in which the inflow side housing 31 and the outflow side housing 32 are overlapped with each other. The mounting hole of the second mounted portion 35 is a through hole for inserting a fixing means such as a bolt to be connected to a vehicle side member or the like.

The second attachment portion 35 is provided with a metal reinforcing member 35a that is insert-molded into the solenoid housing. The reinforcing member 35a is a tubular body and is also called a collar. The inner peripheral surface of the reinforcing member 35a may form the inner peripheral surface of the mounting hole in the second mounted portion 35. A contact surface 35b with a vehicle side member or the like is formed on the outflow side housing 32 side of the second attached portion 35. The contact surface 35b preferably has an appropriate flatness in order to be grounded to a mounting portion such as a vehicle side member. The tip annular surface of the reinforcing member 35a may form a part of the contact surface 35b. The second attached portion 35 is arranged at a position biased to one side in the arrangement direction of the solenoid portions in the inflow side housing 31. The second mounting portion 35 is arranged laterally in the inflow side housing 31 so as to be aligned with the second solenoid valve 38. The first mounted portion 34, the first solenoid portion, the second solenoid portion, and the second mounted portion 35 are arranged so as to overlap each other in the alignment direction of the first solenoid portion and the second solenoid portion.

The purge valve 3 has a third attachment portion 36 that projects outward from the third side wall 313 of the inflow side housing 31. The third attachment portion 36 is a part of the solenoid housing which is a resin molded product, and is formed of resin. The third attached portion 36 is located on one side of the inflow side housing 31, and is provided on the third side wall 313 adjacent to the first attached portion 34 and the second attached portion 35. The third attachment portion 36 projects from the third side wall 313 in the same direction as the connectors 31c and 31d. The third mounting portion 36 is provided with a mounting hole that penetrates in the coupling direction in which the inflow side housing 31 and the outflow side housing 32 are overlapped with each other. The mounting hole of the third mounted portion 36 is a through hole for inserting a fixing means such as a bolt to be connected to a vehicle side member or the like.

The third mounting portion 36 is provided with a metal reinforcing member 36a that is insert-molded into the solenoid housing. The reinforcing member 36a is a tubular body and is also called a collar. The inner peripheral surface of the reinforcing member 36a may form the inner peripheral surface of the mounting hole in the third mounted portion 36. A contact surface 36b with a vehicle-side member or the like is formed on the outflow-side housing 32 side of the third mounted portion 36. The contact surface 36b preferably has an appropriate flatness in order to be grounded to a mounting portion such as a vehicle side member. The tip annular surface of the reinforcing member 36a may form a part of the contact surface 36b.

The second solenoid valve 38 is configured so that the fluid flow rate flowing through the fully opened second internal passage 43b is the smallest among the plurality of solenoid valves. The first solenoid valve 37 is configured so that the flow rate of the fluid flowing through the fully opened first internal passage 43a is larger than that of the second solenoid valve 38. In the purge valve 3, the first solenoid valve 37 is a flow rate adjusting valve that provides a large flow rate performance, and the second solenoid valve 38 is a flow rate adjusting valve that provides a small flow rate performance. The first internal passage 43a has a passage crossing area larger than that of the second internal passage 43b.

The first internal passage 43a is formed so that the flow rate of the fluid that can flow down is larger than that of the second internal passage 43b. With this configuration, the vibration associated with the opening / closing operation of the first valve body 42a can be larger than the vibration associated with the opening / closing operation of the second valve body 42b. The purge valve 3 has a configuration in which the first mounted portion 34 and the second mounted portion 35 are lined up with the first solenoid portion in between, as a configuration capable of suppressing this vibration.

For example, when the supply flow rate to the engine 2 requires a small flow rate, the first solenoid valve 37 is in the closed state, and the second solenoid valve 38 is energized and controlled by the control device to be in the valve open state. When a small flow rate is required, the control device controls the ratio of the on-time to the total time of energization on and off, that is, the duty ratio, to energize the coil portion 410 of the second solenoid valve 38. When a small flow rate is requested, the duty energization control allows the small flow rate of evaporated fuel flowing through the second internal passage 43b to be supplied into the intake pipe 21 from the outflow port 32a.

When a shift is made from the time when a small flow rate is requested to the time when a large flow rate is required, the second solenoid valve 38 is always open, and the first solenoid valve 37 is duty-energized controlled to be in an open state. When a large flow rate is requested, in addition to the small flow rate flowing through the second internal passage 43b in the fully open state, a large flow rate of evaporated fuel flowing through the first internal passage 43a is supplied into the intake pipe 21 from the outflow port 32a by duty energization control. Will be done. When a small flow rate is required, the valve opening rate of the second valve body 42b is increased and the supply flow rate is controlled to increase toward the time when a large flow rate is required. When a large flow rate is required, the valve opening rate of the first valve body 42a is increased from the supply flow rate when the second valve body 42b is always open, and the supply flow rate is controlled to increase. With such control, the flow rate increase rate when a large flow rate is requested becomes larger than the flow rate increase rate when a small flow rate is requested. The purge valve 3 is controlled so that the second solenoid valve 38, which provides the small flow rate performance, is opened first when the supply starts from the state where the supply flow rate to the engine 2 is zero.

The operation and effect brought about by the purge control valve device disclosed by the purge valve 3 of the first embodiment will be described. The purge control valve device includes a first internal passage 43a and a second internal passage 43b, which are a part of an internal passage connecting the inflow port 31a and the outflow port 32a. The purge control valve device displaces the first solenoid unit that generates an electromagnetic force that displaces the first valve body 42a that can open and close the first internal passage 43a and the second valve body 42b that can open and close the second internal passage 43b. It is provided with a second solenoid unit that generates an electromagnetic force to cause the displacement. The purge control valve device includes a solenoid housing which is a resin molded product in which both the first solenoid portion and the second solenoid portion are resin-molded and incorporated. The solenoid housing includes a meat stealing unit group 51 including a plurality of meat stealing units 51a formed between the first solenoid unit and the second solenoid unit.

According to this configuration, the presence of the meat stealing portion group 51 formed between the solenoid portions makes it possible to form a resin flow that does not easily flow between the two solenoid portions during molding. By providing such resin flow characteristics during molding, it is possible to promote resin flow to the resin mold portion of each solenoid portion. For example, when a resin injection gate is set in the central portion of the first solenoid portion or the second solenoid portion, it is possible to promote the resin flow to the solenoid portion in which a plurality of parts are installed. For this reason, the narrow resin passage formed between the parts in each solenoid portion is encouraged to be filled with the resin, and the resin can flow into the secondary welding portion. This purge control valve device has the effect of reducing the resin flow in the solenoid portion, preferentially flowing the resin to the secondary welding portion, and suppressing void defects. This purge control valve device can prevent the resin melting in the secondary welding portion from becoming insufficient and causing poor airtightness.

The meat stealing portion 51a is formed by a recess having a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. According to this configuration, it is possible to promote the flow of resin through the secondary welding portions of both solenoid portions during molding to improve the resin filling property. This makes it possible to provide a purge control valve device having a high effect of suppressing the generation of voids in an important portion where void defects are desired to be prevented.

The plurality of meat stealing portions 51a are formed by arranging recesses having an elongated shape in the arranging direction of the first solenoid portion and the second solenoid portion in an intersecting direction intersecting the arranging direction. According to this configuration, the effect of promoting the resin flow from between the two solenoid portions to the adjacent solenoid portion at the time of molding is obtained. As a result, resin merging between the two solenoid portions is promoted, so that it is possible to provide a purge control valve device that suppresses the formation of a clear weld.

The solenoid housing includes a first solenoid side meat stealing unit group 53 formed at a portion located on the opposite side of the meat stealing unit group 51 around the first solenoid unit. The solenoid housing includes a second solenoid-side meat stealing unit group 54 formed at a portion located on the opposite side of the meat-stealing unit group 51 around the second solenoid unit. According to this purge control valve device, the resin flow to the secondary welding portions in the two solenoid portions is promoted to suppress the generation of voids, and the resin flow to the two attached portions can be achieved.

The solenoid housing includes a first solenoid-side attached portion and a second solenoid-side attached portion for attachment to the vehicle-side member. The first solenoid-side attached portion projects outward from the portion where the first solenoid-side meat stealing portion group 53 is formed with respect to the first solenoid portion. The attachment portion on the second solenoid side projects outward from the portion where the meat stealing portion group 54 on the second solenoid side is formed with respect to the second solenoid portion. According to this configuration, it is possible to provide a purge control valve device that balances the resin flow to the two attached portions and the resin flow to the secondary welding portions in the two solenoid portions.

<Second Embodiment>
The second embodiment will be described with reference to FIG. In the second embodiment, the first solenoid-side meat stealing unit group 153 and the second solenoid-side meat stealing unit group 154 are different from the first embodiment. The configurations, actions, and effects that are not particularly described in the second embodiment are the same as those in the first embodiment, and only the differences will be described below.

As shown in FIG. 11, the meat stealing portion group 153 on the first solenoid side includes a plurality of meat stealing portions 153a arranged in the arrangement direction. The meat stealing unit group 153 on the first solenoid side is provided at a portion located on the opposite side of the meat stealing unit group 51 around the first solenoid unit. The meat stealing portion group 153 on the first solenoid side is located outside the diameter of the first solenoid portion in the solenoid housing. The meat stealing unit group 51, the first solenoid unit, and the meat stealing unit group 153 on the first solenoid side are arranged in the same arrangement direction so as to form a line. The meat stealing portion group 153 on the first solenoid side functions as a flow resistance portion of the resin flowing from the first solenoid portion to the first mounted portion 34 side at the time of molding. A filling portion 153b filled with a resin material is provided between the meat stealing portion 153a and the meat stealing portion 153a adjacent to each other in the arrangement direction.

The meat stealing portion 153a has an elongated hole portion as an opening end in the crossing direction with respect to the alignment direction. The meat stealing portion 153a is formed by a recess having a depth longer than the axial length of the first solenoid portion. The depth of the recess forming the meat stealing portion 153a is the axial length from the opening end to the bottom surface of the recess. The meat stealing portion 153a has a rectangular parallelepiped shape that is flat in the alignment direction. The bottom surface of the recess forming the meat stealing portion 153a is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion. The recess forming the meat stealing portion 153a has a depth longer than the axial length of the first solenoid portion. Like the meat stealing portion 153a, the filling portion 153b is a resin portion elongated in the intersecting direction with respect to the arranging direction. The peripheral meat stealing unit group 55 is provided between the meat stealing unit group 51 and the meat stealing unit group 153 on the first solenoid side around the first solenoid unit.

The meat stealing unit group 154 on the second solenoid side includes a plurality of meat stealing units 154a arranged in the arrangement direction. The meat stealing unit group 154 on the second solenoid side is provided at a portion located on the opposite side of the meat stealing unit group 51 around the second solenoid unit. The meat stealing portion group 154 on the second solenoid side is located outside the diameter of the second solenoid portion in the solenoid housing. The meat stealing unit group 51, the second solenoid unit, and the meat stealing unit group 154 on the second solenoid side are arranged in the same arrangement direction so as to form a line. The meat stealing portion group 154 on the second solenoid side functions as a flow resistance portion of the resin flowing from the second solenoid portion to the second attached portion 35 side at the time of molding. A filling portion 154b filled with a resin material is provided between the meat stealing portion 154a and the meat stealing portion 154a adjacent to each other in the arrangement direction.

The meat stealing portion 154a has an elongated hole portion as an opening end in the intersecting direction with respect to the alignment direction. The meat stealing portion 154a is formed by a recess having a depth longer than the axial length of the second solenoid portion. The depth of the recess forming the meat stealing portion 154a is the axial length from the opening end to the bottom surface of the recess. The meat stealing portion 154a has a rectangular parallelepiped shape that is flat in the alignment direction. The bottom surface of the recess forming the meat stealing portion 154a is located closer to the outflow side housing 32 than the axial end portion of the second solenoid portion. The recess forming the meat stealing portion 154a has a depth longer than the axial length of the second solenoid portion. Like the meat stealing portion 154a, the filling portion 154b is a resin portion elongated in the intersecting direction with respect to the arranging direction.

<Third Embodiment>
The third embodiment will be described with reference to FIG. In the third embodiment, the meat stealing group 151 is different from the first embodiment. The configurations, actions, and effects that are not particularly described in the third embodiment are the same as those in the first embodiment, and only the differences will be described below.

As shown in FIG. 12, the meat stealing unit group 151 includes a plurality of meat stealing units. The meat stealing unit group 151 includes a meat stealing unit 51a and a plurality of meat stealing units 151a arranged in the arrangement direction. A filling portion 151c filled with a resin material is provided between the meat stealing portion group 151 adjacent to the crossing direction and the meat stealing portion group 52 on the side to be attached. The filling portion 151c is a resin portion elongated in the alignment direction rather than the crossing direction. The meat stealing portion 151a is formed by a recess having a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. The meat stealing portion 151a has a rectangular parallelepiped shape that is flat in the alignment direction. The bottom surface of this recess is located closer to the outflow side housing 32 than the axial end portion of the first solenoid portion and the axial end portion of the second solenoid portion. The recess forming the meat stealing portion 151a has a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion.

The plurality of meat stealing portions 151a are formed by arranging elongated recesses in the intersecting direction intersecting the arranging direction of the two solenoid portions. According to this configuration, it is possible to promote the resin flow to the secondary welding portion and the resin merging between the two solenoid portions at the time of molding. This contributes to suppressing the formation of a clear weld between the two solenoid parts. This purge control valve device contributes to suppressing a decrease in the strength of the solenoid housing by suppressing weld formation.

<Fourth Embodiment>
The fourth embodiment will be described with reference to FIG. In the fourth embodiment, the meat stealing group 251 is different from the first embodiment and the third embodiment. The configurations, actions, and effects that are not particularly described in the fourth embodiment are the same as those in the above-described embodiment, and only the differences will be described below.

As shown in FIG. 13, the meat stealing unit group 251 includes a plurality of meat stealing units 151a. The meat stealing unit group 251 has a configuration in which a set of meat stealing units 151a arranged in the arrangement direction are arranged in the crossing direction. A filling portion 251c filled with a resin material is provided between a set of meat stealing portions 151a and a set of meat stealing portions 151a arranged in the intersecting direction. The filling portion 251c is a resin portion elongated in the alignment direction rather than the intersection direction.

<Fifth Embodiment>
A fifth embodiment will be described with reference to FIG. In the fifth embodiment, the meat stealing portion group 152 on the attached portion side is different from the first embodiment. The configurations, actions, and effects that are not particularly described in the fifth embodiment are the same as those in the first embodiment, and only the differences will be described below.

As shown in FIG. 14, the meat stealing portion group 152 on the side to be attached is provided between the third attached portion 36 and the meat stealing portion group 51. The meat stealing portion group 152 on the attached portion side functions as a flow resistance portion for the resin flowing to the third attached portion 36 side at the time of molding. The meat-stealing portion group 152 on the attached portion side includes a plurality of meat-stealing portions 152a. The plurality of meat stealing portions 152a are arranged side by side in the crossing direction. A filling portion 152b filled with a resin material is provided between the meat stealing portion 152a and the meat stealing portion 152a adjacent to each other in the intersecting direction. A filling portion 152c filled with a resin material is provided between the meat stealing portion group 51 adjacent to each other in the intersecting direction and the meat stealing portion group 152 on the side to be attached. Like the meat stealing portion 51a, the filling portion 152c is a resin portion elongated in the alignment direction with respect to the crossing direction.

<Sixth Embodiment>
The sixth embodiment will be described with reference to FIG. In the sixth embodiment, the meat stealing unit group 351 and the meat stealing unit group 252 on the attached portion side are different from the first embodiment. The configurations, actions, and effects that are not particularly described in the sixth embodiment are the same as those in the first embodiment, and only the differences will be described below.

As shown in FIG. 15, the meat stealing unit group 351 located between the two solenoid units includes a first meat stealing unit group and a second meat stealing unit group. The first meat stealing unit group includes a plurality of meat stealing units 351a forming a line near the first solenoid unit. The second meat stealing section group includes a plurality of meat stealing sections 151a located closer to the second solenoid section than the first meat stealing section group and forming a line. The meat stealing portion 151a and the meat stealing portion 351a are formed by openings and recesses having different shapes. The number of meat stealing portions 351a included in the first meat stealing group is different from the number of meat stealing portions 151a included in the second meat stealing group. A filling portion 351d filled with a resin material is provided between the first meat stealing portion group and the second meat stealing portion group adjacent to each other in the arrangement direction. A filling portion 351b filled with a resin material is provided between the meat stealing portion 351a and the meat stealing portion 351a adjacent to each other in the intersecting direction. A filling portion 351c filled with a resin material is provided between the meat stealing portion 151a and the meat stealing portion 151a adjacent to each other in the intersecting direction. As a result, the first meat stealing portion group and the second meat stealing portion group are formed asymmetrically on the left and right sides of the filling portion.

The meat-stealing portion group 252 on the side to be attached includes a plurality of meat-stealing portions 252a in a row closer to the first solenoid portion, and a meat-stealing portion 52a located closer to the second solenoid portion than the plurality of meat-stealing portions 252a. And include. The meat stealing portion 252a and the meat stealing portion 52a are formed by openings and recesses having different shapes. A filling portion 252d filled with a resin material is provided between the meat stealing portions 252a and the meat stealing portions 52a adjacent to each other in the arrangement direction. A filling portion 252b filled with a resin material is provided between the meat stealing portion 252a and the meat stealing portion 252a adjacent to each other in the intersecting direction.

The operation and effect brought about by the purge control valve device disclosed by the purge valve 3 of the sixth embodiment will be described. The meat stealing unit group includes a first meat stealing unit group located closer to the first solenoid unit than the second solenoid unit and a second meat stealing unit group located closer to the second solenoid unit than the first solenoid unit. Including. The first meat stealing group and the second meat stealing group are formed asymmetrically. According to this configuration, since the first meat stealing portion group and the second meat stealing portion group have an asymmetrical shape, the resin flow from the two solenoid portions can be formed non-uniformly at the time of molding. Due to this non-uniform resin flow formation, it is possible to prevent the resins from merging on the one-point chain line shown in FIG. Therefore, it contributes to suppressing the formation of a clear weld between the two solenoid portions, and it is possible to suppress a decrease in the strength of the solenoid housing.

The first meat stealing portion group is formed including a plurality of meat stealing portions 351a arranged in the crossing direction. In the second meat stealing section group, a plurality of meat stealing sections 151a having a shape different from that of the meat stealing section 351a of the first meat stealing section group are formed side by side in the crossing direction. As a result, since the shapes of the meat stealing portion 351a of the first meat stealing portion group and the meat stealing portion 151a of the second meat stealing portion group are different, the resin flow from the two solenoid portions can be formed non-uniformly at the time of molding. Due to this non-uniform resin flow formation, resin merging on the one-point chain line shown in FIG. 15 can be suppressed, and clear weld formation between the two solenoid portions can be suppressed.

The solenoid housing includes a third mounting portion 36 and a metal reinforcing member 36a insert-molded in the third mounting portion 36. The third attached portion 36 is a resin molded portion that protrudes in the intersecting direction from the portion where the meat stealing portion group 351 is formed. Due to the difference in linear expansion coefficient between the insert-molded metal reinforcing member 36a and the resin-molded portion 36, there is a concern that cracks may occur due to weld formation. According to this solenoid housing, it is possible to suppress the formation of a clear weld from between the two solenoid portions to the third mounted portion 36. Therefore, it is possible to suppress the occurrence of cracks in the third mounted portion 36 and secure the function of the third mounted portion 36.

In the second meat stealing section group, a number of meat stealing portions 151a different from the number of meat stealing portions 351a forming the first meat stealing section group are formed side by side in the crossing direction. As a result, since the number of the meat stealing portion 351a of the first meat stealing portion group and the meat stealing portion 151a of the second meat stealing portion group are different, the resin flow from the two solenoid portions can be formed non-uniformly during molding. This configuration also suppresses resin merging on the one-point chain line shown in FIG. 15, and suppresses clear weld formation between the two solenoid portions.

<7th Embodiment>
A seventh embodiment will be described with reference to FIG. In the seventh embodiment, the meat stealing portion group 352 on the attached portion side is different from the sixth embodiment. The configurations, actions, and effects that are not particularly described in the seventh embodiment are the same as those in the above-described embodiment, and only the differences will be described below.

As shown in FIG. 16, the meat stealing portion group 352 on the attached portion side has a meat stealing portion 252a located closer to the first solenoid portion and a meat stealing portion 252a located closer to the third attached portion 36 than the meat stealing portion 252a. Includes part 152a. The meat stealing portion 252a and the meat stealing portion 152a are formed by openings and recesses having different shapes. A filling portion 352d filled with a resin material is provided between the meat stealing portion 252a and the meat stealing portion 152a adjacent to each other in the intersecting direction.

<Other Embodiments>
Disclosure of this specification is not limited to the illustrated embodiments. The disclosure includes exemplary embodiments and modifications by those skilled in the art based on them. For example, the disclosure is not limited to the combination of parts and elements shown in the embodiment, and can be implemented in various modifications. Disclosure can be carried out in various combinations. The disclosure can have additional parts that can be added to the embodiments. The disclosure includes parts and elements of the embodiment omitted. Disclosures include replacements or combinations of parts, elements 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.

The purge control valve device capable of achieving the object disclosed in the specification is not limited to the configuration described with reference to the drawings in the above-described embodiment. The purge valve in the above-described embodiment is shown so that the inflow port 31a is located below the outflow port 32a. The positional relationship between the inflow port 31a and the outflow port 32a is not limited to this form. The inflow port 31a may be configured to be located above the outflow port 32a, or the inflow port 31a and the outflow port 32a may be arranged side by side. Further, the positional relationship between the inflow port 31a and the first internal passage 43a and the second internal passage 43b may also be arranged in the vertical direction.

2 ... Engine, 13 ... Canister 31 ... Inflow side housing (solenoid housing), 31a ... Inflow port 32a ... Outflow port, 37 ... 1st solenoid valve (1st solenoid part)
38 ... 2nd solenoid valve (2nd solenoid part), 42a ... 1st valve body 42b ... 2nd valve body, 43a ... 1st internal passage, 43b ... 2nd internal passage 51,151,251,351 ... Meat stealing part group

Claims (10)

The inflow port (31a) into which the evaporated fuel spilled from the canister (13) flows in, and
An outflow port (32a) through which evaporative fuel flows toward the engine (2),
The first internal passage (43a) and the second internal passage (43b), which are a part of the internal passage connecting the inflow port and the outflow port,
A first solenoid unit (37) that generates an electromagnetic force that displaces a first valve body (42a) that can open and close the first internal passage.
A second solenoid unit (38) that generates an electromagnetic force that displaces a second valve body (42b) that can open and close the second internal passage.
A solenoid housing (31) which is a resin molded product and contains both the first solenoid portion and the second solenoid portion by resin molding.
With
The solenoid housing is a purge control valve device including a meat stealing portion group (51; 151; 251; 351) including a plurality of meat stealing portions formed between the first solenoid portion and the second solenoid portion. .. The purge control valve device according to claim 1, wherein the meat stealing portion is formed by a recess having a depth longer than the axial length of the first solenoid portion and the axial length of the second solenoid portion. Claim 1 or the plurality of meat stealing portions are formed by arranging recesses having an elongated shape in the alignment direction of the first solenoid portion and the second solenoid portion in an intersecting direction intersecting the alignment direction. The purge control valve device according to claim 2. Claim 1 or claim, wherein the plurality of meat stealing portions are formed by arranging elongated recesses in the intersecting direction intersecting the alignment direction of the first solenoid portion and the second solenoid portion in the alignment direction. 2. The purge control valve device according to 2. The solenoid housing is a first solenoid-side meat-stealing unit group (53a) including a plurality of meat-stealing units (53a) formed at a portion located on a portion opposite to the meat-stealing unit group around the first solenoid unit. 53) and the second solenoid-side meat-stealing unit group (54) including a plurality of meat-stealing units (54a) formed at a portion located on the opposite side of the meat-stealing unit group around the second solenoid unit. ), The purge control valve device according to claim 1. In order to attach the solenoid housing to the vehicle-side member, the first solenoid-side attached portion projects outward from the portion where the first solenoid-side meat stealing portion group is formed with respect to the first solenoid portion. (34) and the second solenoid-side attached portion that protrudes outward from the portion where the second solenoid-side meat stealing portion group is formed in order to attach to the vehicle-side member. (35), the purge control valve device according to claim 5. The meat stealing part group includes a first meat stealing part group located closer to the first solenoid part than the second solenoid part, and a second meat stealing part group located closer to the second solenoid part than the first solenoid part. Including the stealing group
The purge control valve device according to claim 1, wherein the first meat stealing unit group and the second meat stealing unit group are asymmetrically formed. The first meat stealing portion group is formed to include a plurality of meat stealing portions arranged in an intersecting direction intersecting the arrangement direction of the first solenoid portion and the second solenoid portion.
The seventh aspect of claim 7, wherein the second meat-stealing portion group is formed by arranging a plurality of meat-stealing portions having a shape different from that of the meat-stealing portion included in the first meat-stealing portion group in the crossing direction. Purge control valve device. An attached portion (36) formed in the solenoid housing and a metal reinforcing member (36a) insert-molded in the attached portion are provided for attachment to the vehicle side member.
7. The attached portion is a resin molded portion that protrudes from a portion in which the meat stealing portion group is formed in an intersecting direction intersecting the alignment direction of the first solenoid portion and the second solenoid portion. Alternatively, the purge control valve device according to claim 8. The first meat stealing portion group is formed to include a plurality of meat stealing portions arranged in an intersecting direction intersecting the arrangement direction of the first solenoid portion and the second solenoid portion.
The second meat-stealing portion group is claimed from claim 7, wherein a number of meat-stealing portions different from the number of the meat-stealing portions forming the first meat-stealing portion group are formed side by side in the crossing direction. Item 9. The purge control valve device according to any one of items 9.

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