JP7455083B2 - Solenoid valve device, solenoid valve, and filter - Google Patents

Description

The present disclosure relates to a solenoid valve device, a solenoid valve, and a filter.

Evaporative gas is generated in a vehicle's fuel tank. The fuel component of the evaporated gas is temporarily adsorbed by the canister and then released into the intake system of the engine when the engine is driven. Additionally, otherwise harmless clean air is released into the atmosphere by the canister. In this series of evaporated gas treatment systems, in order to diagnose leakage of evaporated gas from piping, etc., a solenoid valve device is sometimes provided to cut off between the canister and the atmosphere (seal the system). Such a conventional electromagnetic valve device is disclosed in Patent Document 1, for example.

Chinese Patent Publication No. 108980366

The electromagnetic valve device disclosed in Patent Document 1 (hereinafter referred to as a conventional electromagnetic valve device) includes a valve portion (electromagnetic valve) and a filter portion (filter). In this conventional electromagnetic valve device, a valve part and a filter part, which are greatly different in size and shape from each other, are integrated and fixed to the vehicle body. For this reason, in the conventional solenoid valve device, the structure for fixing it to the vehicle body is complicated.

The present disclosure has been made in order to solve the above-mentioned problems, and an object of the present disclosure is to provide a solenoid valve device in which a valve portion and a filter portion can be fixed to a vehicle body at a common location.

The electromagnetic valve device according to the present disclosure includes a valve part that is supported by a main body and opens the inside of the canister to the atmosphere, a mounting part that is provided on the main body and fixed to the vehicle body, and a valve part that is arranged on the atmosphere side relative to the valve part. A filter part, a first snap fit provided on the filter part and fitted with the mounting part , and a mounting part provided on the filter part and fitted with the first snap fit facing the first snap fit in the mounting part. It is equipped with a pressing plate that is pressed by a surface located on the opposite side of the surface .

According to the present disclosure, the valve part and the filter part can be fixed to the vehicle body at a common location.

1 is a diagram showing the configuration of a vaporized gas processing system to which a solenoid valve device according to a first embodiment is applied. 1 is a perspective view showing the configuration of a solenoid valve device according to Embodiment 1, viewed from the solenoid valve side. FIG. 2 is a perspective view showing the configuration of the electromagnetic valve device according to Embodiment 1, viewed from the filter side. 1 is a diagram showing the configuration of a solenoid valve device according to Embodiment 1. FIG. FIG. 4A is a front view showing the configuration of the solenoid valve device. FIG. 4B is a side view showing the configuration of the electromagnetic valve device. FIG. 4C is a plan view showing the configuration of the electromagnetic valve device. FIG. 3 is a diagram showing the configuration of a filter. FIG. 5A is a plan view showing the configuration of the filter. FIG. 5B is an enlarged view of the main part of FIG. 5A. It is a front view when the fitting protrusion of a solenoid valve and the snap fit of a filter fit. FIG. 7 is a front view showing the configuration of a solenoid valve in a solenoid valve device according to a second embodiment. FIG. 7 is a diagram showing the configuration of a solenoid valve device according to a third embodiment. FIG. 8A is a diagram showing an exploded state of the solenoid valve and the filter. FIG. 8B is a diagram showing a state in which the attachment parts overlap each other.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

Embodiment 1.
A solenoid valve device 13 according to Embodiment 1 will be explained using FIGS. 1 to 6.

First, a vaporized gas processing system to which the electromagnetic valve device 13 according to the first embodiment is applied will be explained using FIG. 1.

FIG. 1 is a diagram showing the configuration of a vaporized gas processing system to which a solenoid valve device 13 according to the first embodiment is applied.

Here, arrow A shown in FIG. 1 indicates the flow of evaporated gas from the fuel tank 11. Arrow B shown in FIG. 1 indicates the flow of air from the solenoid valve device 13 into the atmosphere. Arrow C shown in FIG. 1 indicates the flow of a gas mixture of evaporated fuel from the canister 12 and clean air from the atmosphere. Arrow D shown in FIG. 1 indicates the flow of fuel from the fuel tank 11.

The evaporated gas processing system shown in FIG. 1 is mounted on a vehicle such as an automobile, for example. This evaporated gas treatment system includes a fuel tank 11, a canister 12, a solenoid valve device 13, a solenoid valve 14, an intake pipe 15, a throttle valve 16, an engine 17, an introduction passage 21, and a discharge passage 22.

The fuel tank 11 and canister 12 are connected by an introduction passage 21. Further, the canister 12 and the intake pipe 15 are connected by a discharge passage 22.

The fuel tank 11 stores fuel for the vehicle. The evaporated gas generated within the fuel tank 11 is introduced into the canister 12 through the introduction passage 21.

The canister 12 temporarily adsorbs and holds the fuel components evaporated in the fuel tank 11, and then releases them using the negative pressure of the engine 17. The inside of this canister 12 is filled with an adsorbent such as activated carbon. Further, the canister 12 has an atmosphere opening hole 12a, and is connected to the solenoid valve device 13 via the atmosphere opening hole 12a.

The electromagnetic valve device 13 serves as a passageway for supplying air to the canister 12 or discharging air from the canister 12 into the atmosphere. This electromagnetic valve device 13 communicates with the atmosphere. Note that details of the solenoid valve device 13 will be described later.

The solenoid valve 14 is provided in the discharge passage 22 . By communicating between the canister 12 and the intake pipe 15, the solenoid valve 14 utilizes the negative pressure of the engine 17 to transfer the fuel components temporarily adsorbed to the adsorbent of the canister 12 to the engine 17. It is intended to be emitted towards. That is, the fuel components adsorbed in the canister 12 are discharged into the intake pipe 15 through the discharge passage 22 .

The intake pipe 15 constitutes a part of the intake system of the engine 17. This intake pipe 15 is connected to an intake port (not shown) of an engine 17.

The throttle valve 16 is provided within the intake pipe 15. The throttle valve 16 controls the amount of air taken into the intake port of the engine 17.

Therefore, in a highly volatile environment such as when the engine 17 is stopped or at a high temperature, the evaporated gas generated in the fuel tank 11 is adsorbed into the canister 12 via the introduction passage 21. The fuel component of the evaporated gas adsorbed within this canister 12 is adsorbed by the adsorbent. At this time, when the engine 17 is started and a predetermined fuel purge condition is met, the electromagnetic valve 14 opens, and the suction negative pressure of the engine 17 acts on the canister 12.

Then, the fuel components adsorbed by the adsorbent of the canister 12 are separated from the adsorbent by fresh air introduced from the atmosphere opening hole 12a. Next, the fuel component separated from the adsorbent in the canister 12 is released into the intake pipe 15 via the release passage 22. Thereafter, the fuel components released into the intake pipe 15 are combusted within the combustion chamber of the engine 17.

Next, the electromagnetic valve device 13 will be explained using FIGS. 2 to 6. FIG. 2 is a perspective view showing the configuration of the solenoid valve device 13 according to the first embodiment, viewed from the solenoid valve side. FIG. 3 is a perspective view showing the configuration of the electromagnetic valve device 13 according to the first embodiment, viewed from the filter side. FIG. 4 is a diagram showing the configuration of the electromagnetic valve device 13 according to the first embodiment. FIG. 5 is a diagram showing the configuration of the filter 40. FIG. 6 is a front view when the fitting protrusion 38 of the solenoid valve 30 and the snap fit 46 of the filter 40 are fitted.

The electromagnetic valve device 13 is fixed to, for example, a vehicle body member (not shown) that constitutes the vehicle. This solenoid valve device 13 includes a solenoid valve 30 and a filter 40.

The solenoid valve 30 opens or shuts off the canister 12 to the atmosphere. This electromagnetic valve 30 has a main body 31, a valve portion 32, a coil portion 33, a mounting portion 34, a bush 35, nipples 36, 37, and a fitting protrusion 38.

The main body 31 is formed into a cylindrical shape. The valve portion 32 is provided inside the main body 31. Further, the valve portion 32 has a movable element (not shown) that opens and closes. The coil portion 33 is provided on one end side of the main body 31. This coil section 33 generates an electromagnetic force for moving the movable element in the valve closing direction with respect to the valve section 32.

The attachment portion 34 is for attaching the electromagnetic valve device 13 to a vehicle body member. The attachment portion 34 is, for example, bolted to a vehicle body member. The attachment portion 34 is provided to the main body 31 so as to extend in a direction substantially perpendicular to the axial direction of the main body 31 . Therefore, one end of the attachment part 34 is arranged on the filter side with the main body 31 as the center. On the other hand, the other end of the attachment part 34 is arranged on the opposite side of the filter 40 with the main body 31 at the center. Such a mounting portion 34 has a notch 34a and a fitting hole 34b.

The notches 34a are formed at both ends of the attachment portion 34, respectively. A bush 35 can be fitted into each notch 34a. Therefore, the attachment portion 34 can be fixed to the vehicle body member by inserting a bolt (not shown) into the bush 35 fitted into each notch 34a.

The fitting hole 34b is formed on one end side of the mounting portion 34 (see FIG. 7). Although details will be described later, the fitting hole 34b is a hole for fitting the filter 40 and each other.

Nipples 36 and 37 are provided on the other end side of main body 31. The nipples 36 and 37 communicate with each other through the hollow portion of the main body 31 so as to face each other. The nipple 36 is arranged on the filter side with the main body 31 at the center, and can be fitted to the filter 40. On the other hand, the nipple 37 is arranged on the opposite side of the filter 40 with the main body 31 at its center, and can be fitted into the atmosphere opening hole 12a of the canister 12.

Therefore, when the movable element of the valve portion 32 moves in the valve opening direction to open the space between the nipples 36 and 37, the canister 12 is opened to the atmosphere. On the other hand, when the movable element of the valve portion 32 moves in the valve-closing direction to cut off the space between the nipples 36 and 37, the canister 12 is cut off from the atmosphere.

Further, the fitting protrusion 38 is formed to protrude from the outer circumferential surface of the nipple 36 toward the outside in the radial direction. Although details will be described later, the fitting protrusion 38 is a protrusion for fitting together with the filter 40.

The filter 40 is disposed closer to the atmosphere than the solenoid valve 30 in the solenoid valve device 13 to prevent foreign matter from entering from the atmosphere side to the solenoid valve side. This filter 40 has a filter portion 41, a cap 42, a connecting tube 43, a snap fit 44, a press plate 45, and a snap fit 46. Snap fit 44 constitutes a first snap fit, and snap fit 46 constitutes a second snap fit.

The filter part 41 is formed in a cylindrical shape. This filter section 41 has a filter inside. The cap 42 is provided on the filter section 41 so as to cover the upper opening of the filter section 41. Since the inner circumferential diameter of the cap 42 is larger than the outer circumferential diameter of the filter portion 41, a gap is formed therebetween. This gap serves as an atmosphere opening hole of the filter 40.

The connecting pipe 43 is formed into a cylindrical shape. The connecting tube 43 is arranged so that its central axis is substantially orthogonal to the central axis of the filter section 41. One end of the connecting pipe 43 communicates with the inside of the filter section 41 . On the other hand, the other end of the connecting pipe 43 can be fitted into the nipple 36 of the solenoid valve 30.

The snap fit 44 is formed into a flat plate shape. This snap fit 44 is integrally molded with the outer peripheral surface of the filter section 41. Moreover, the snap fit 44 is provided so as to extend from the outer peripheral surface thereof toward the electromagnetic valve side.

The snap fit 44 has a fitting convex portion 44a. This fitting convex portion 44a is formed at the tip of the snap fit 44. Further, the fitting convex portion 44a protrudes toward the pressing plate side, which will be described later. The fitting convex portion 44a is fitted into the fitting hole 34b of the attachment portion 34 by utilizing the elasticity of the material of the snap fit 44.

The pressing plate 45 is formed into a flat plate shape. This pressing plate 45 is integrally molded with the outer peripheral surface of the filter section 41. Further, the presser plates 45 are provided so as to extend from their outer peripheral surfaces toward the electromagnetic valve side.

The snap fit 44 and the press plate 45 are arranged such that one plane faces each other. The mounting portion 34 of the solenoid valve 30 can be inserted between the opposing snap fit 44 and the pressing plate 45.

Specifically, when the mounting portion 34 is inserted between the snap fit 44 and the holding plate 45, the holding plate 45 presses one side of the mounting portion 34, and the snap fit 44 presses against the fitting convex portion 44a. When the mounting portion 34 rides on the other surface, the mounting portion 34 is elastically deformed outward. The arrows shown in FIG. 5B indicate the elastic deformation. Finally, the fitting convex portion 44a fits into the fitting hole 34b of the attachment portion 34. Accordingly, the elastic deformation of the snap fit 44 is stopped.

The snap fit 46 is provided on the lower side of the connecting tube 43. This snap fit 46 has a fitting hole 46a. The fitting hole 46a is formed at the tip of the snap fit 46. The fitting protrusion 38 is fitted into the fitting hole 46a using the elasticity of the material of the snap fit 46.

Specifically, when the nipple 36 of the electromagnetic valve 30 is screwed into the connecting pipe 43 of the filter 40, the snap fit 46 is elastically deformed downward by riding on the fitting protrusion 38. The arrows shown in FIG. 6 indicate the elastic deformation. Finally, the fitting protrusion 38 fits into the fitting hole 46a of the snap fit 46. Accordingly, the elastic deformation of the snap fit 46 is stopped.

Therefore, between the solenoid valve 30 and the filter 40, the fitting hole 34b of the mounting portion 34 and the fitting protrusion 44a of the snap fit 44 fit together, and the fitting protrusion 38 and the fitting hole 46a of the snap fit 46 fit together. are assembled together by fitting. Further, the solenoid valve 30 and the filter 40 that have been assembled to each other can be easily attached to a vehicle body member using the attachment portion 34.

Further, the solenoid valve device 13 can release clean air introduced from the canister 12 into the atmosphere by opening the valve portion 32 with the solenoid valve 30 and filter 40 assembled together. . At this time, the solenoid valve device 13 uses the filter 40 to prevent foreign matter from entering the solenoid valve 30 from the atmosphere side.

As described above, the electromagnetic valve device 13 according to the first embodiment includes the valve section 32 that is supported by the main body 31 and opens the inside of the canister 12 to the atmosphere, the mounting section 34 that is provided on the main body 31 and fixed to the vehicle body, The filter section 41 includes a filter section 41 disposed closer to the atmosphere than the valve section 32, and a snap fit 44 provided on the filter section 41 and fitted into the mounting section 34. Therefore, in the solenoid valve device 13, the solenoid valve 30 and the filter 40 can be fixed to the vehicle body at a common location.

The electromagnetic valve device 13 includes a holding plate 45 that is provided on the filter section 41 and presses the mounting section 34 that fits into the snap fit 44 and the surface of the mounting section 34 that is located on the opposite side of the surface that contacts the snap fit 44. Be prepared. Therefore, the solenoid valve device 13 can reliably fit the mounting portion 34 and the snap fit 44 together.

The electromagnetic valve device 13 includes a nipple 36 that is opened and closed by the valve section 32 and communicates with the filter section 41, a fitting protrusion 38 provided on the nipple 36, and a snap that is provided on the filter section 41 and engages with the fitting protrusion 38. Fit 46. Therefore, the electromagnetic valve device 13 can fit the electromagnetic valve 30 and the filter 40 at the location where they communicate with each other. Furthermore, if the electromagnetic valve device 13 employs an O-ring 39 provided on the nipple 36 for connecting the electromagnetic valve 30 and the filter 40, air leakage from these connections can be more reliably prevented. (See Figures 7 and 8).

Embodiment 2.
A solenoid valve device 13 according to a second embodiment will be described using FIG. 7. FIG. 7 is a front view showing the configuration of the solenoid valve 30 in the solenoid valve device 13 according to the second embodiment.

As shown in FIG. 7, the solenoid valve 30 in the solenoid valve device 13 according to the second embodiment has a bolt through hole instead of the notch 34a and the bush 35 of the mounting portion 34 in the solenoid valve 30 according to the first embodiment. It is equipped with 34c. Therefore, the electromagnetic valve device 13 according to the second embodiment is fixed to a vehicle body member by passing a bolt through the bolt through hole 34c of the mounting portion 34.

As described above, the solenoid valve device 13 according to the second embodiment has the bolt through hole 34c in the mounting portion 34. Therefore, in the solenoid valve device 13, the solenoid valve 30 and the filter 40 can be fixed to the vehicle body at a common location.

Embodiment 3.
A solenoid valve device 13 according to Embodiment 3 will be described using FIG. 8. FIG. 8 is a diagram showing the configuration of the electromagnetic valve device 13 according to the third embodiment.

As shown in FIG. 8, the solenoid valve device 13 according to the third embodiment includes, in place of the notch 34a, the fitting hole 34b, and the bush 35 of the mounting portion 34 in the solenoid valve 30 according to the first embodiment. A bolt through hole 34c is provided. Further, the electromagnetic valve device 13 according to the third embodiment includes a mounting portion 47 in place of the snap fit 44 and the holding plate 45 in the filter 40 according to the first embodiment. This mounting portion 47 has a bolt through hole 47a.

When the electromagnetic valve 30 and the filter 40 are assembled, the mounting part 34, which becomes the valve-side mounting part, and the mounting part 47, which becomes the filter-side mounting part, are overlapped. At this time, the bolt through hole 34c of the attachment part 34 and the bolt through hole 47a of the attachment part 47 are opposed to each other. Therefore, the electromagnetic valve device 13 is fixed to the vehicle body member by passing bolts through the bolt holes 34c and 47a, thereby tightening the mounting portions 34 and 47 together.

As described above, the electromagnetic valve device 13 according to the third embodiment includes the valve section 32 that is supported by the main body 31 and opens the inside of the canister 12 to the atmosphere, the mounting section 34 that is provided on the main body 31 and fixed to the vehicle body, The filter section 41 includes a filter section 41 disposed closer to the atmosphere than the valve section 32, and a mounting section 47 that is provided on the filter section 41, overlaps with the mounting section 34, and is fixed to the vehicle body. Therefore, in the solenoid valve device 13, the solenoid valve 30 and the filter 40 can be fixed to the vehicle body at a common location.

Note that this disclosure does not include any free combination of embodiments, modification of any component in each embodiment, or omission of any component in each embodiment, within the scope of the disclosure. It is possible.

11 fuel tank, 12 canister, 12a atmospheric release hole, 13 solenoid valve device, 14 solenoid valve, 15 intake pipe, 16 throttle valve, 17 engine, 21 introduction passage, 22 discharge passage, 30 solenoid valve, 31 main body, 32 valve section , 33 coil part, 34 mounting part, 34a notch, 34b fitting hole, 34c bolt through hole, 35 bush, 36, 37 nipple, 38 fitting projection, 39 O-ring, 40 filter, 41 filter part, 42 cap, 43 Connecting pipe, 44 Snap fit, 44a Fitting protrusion, 45 Holding plate, 46 Snap fit, 46a Fitting hole, 47 Mounting part, 47a Bolt through hole.

Claims (4)

a valve part supported by the main body and opening the inside of the canister to the atmosphere;
a mounting portion provided on the main body and fixed to the vehicle body;
a filter section disposed closer to the atmosphere than the valve section;
a first snap fit provided on the filter section and fitted with the mounting section ;
a pressing plate provided on the filter portion and pressing the mounting portion that fits into the first snap fit with a surface located on the opposite side of the surface of the mounting portion that faces the first snap fit; Features a solenoid valve device. a nipple that is opened and closed by the valve portion and communicates with the filter portion;
a fitting protrusion provided on the nipple;
The electromagnetic valve device according to claim 1 , further comprising a second snap fit provided on the filter portion and fitted with the fitting protrusion. a valve part supported by the main body and opening the inside of the canister to the atmosphere;
and a mounting portion provided on the main body and fixed to the vehicle body,
The mounting part is
It fits into a snap fit of a filter section disposed closer to the atmosphere than the valve section, and a surface of the mounting section opposite to a surface facing the snap fit is pressed by a pressing plate provided on the filter section. be able to
A solenoid valve characterized by: a filter section supported by the main body and disposed on the atmosphere side relative to a valve section that opens the inside of the canister to the atmosphere;
a snap fit that is provided on the filter portion and that fits into a mounting portion that is provided on the main body and is fixed to the vehicle body ;
A filter comprising: a pressing plate provided on the filter portion and pressing the mounting portion that fits into the snap fit with a surface located on the opposite side of the surface of the mounting portion that faces the snap fit. .

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