A valve device

Abstract

The valve device provided by the application comprises a coil component, a pressing plate and a valve body. The pressing plate comprises a main body part, a first clamping part and a second clamping part. The first clamping part and the second clamping part are located at two ends of the main body part. The first clamping part can be clamped with the coil component to limit the pressing plate from being separated from the coil component. The second clamping part can be fixedly connected or positionally connected with the valve body to limit the relative movement between the pressing plate and the valve body. Such clamping and fixing mode makes the assembly of the coil component, the pressing plate and the valve body not need to pass through a riveting process, can realize the miniaturization of the coil component, is convenient for assembly, and reduces the cost to a certain extent.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and in particular to a valve device for an automotive thermal management system. Background Technology

[0002] In thermal management systems, valve devices are typically used to control refrigerant flow. In related technologies, the valve device includes a coil assembly, a pressure plate, and a valve body. The coil assembly is fixedly connected to the valve body via the pressure plate. To accommodate different installation angles, the pressure plate and coil are usually designed as a post-installed structure. Generally, the coil assembly's outer shell has a positioning post every 45°, and the pressure plate has a positioning hole every 45°, allowing the pressure plate to be installed on the coil in eight directions. After the pressure plate and coil are assembled, the positioning posts protrude from the pressure plate and are then fixed together by thermal riveting. This assembly method requires high strength from the positioning posts and a large layout space, resulting in a larger product size and increased production volume. Summary of the Invention

[0003] The purpose of this application is to provide a valve device that facilitates the miniaturization of coil components while reducing the riveting and rivet steps, thus reducing costs.

[0004] To achieve the above objectives, this application provides the following technical solution;

[0005] A valve device, characterized in that it includes a coil component, a pressure plate, and a valve body. The pressure plate includes a main body, a first engaging portion, and a second engaging portion. The first engaging portion and the second engaging portion are located at both ends of the main body. The first engaging portion extends from the main body along the radial direction of the coil component, and the second engaging portion extends from the main body along the axial or radial direction of the valve body. The first engaging portion can engage with the coil component to restrict the pressure plate from disengaging from the coil component, and the second engaging portion can be fixedly connected or limitedly connected to the valve body to restrict the relative movement between the pressure plate and the valve body.

[0006] In one technical solution provided in this application, the valve device includes a coil component, a pressure plate, and a valve body. The pressure plate includes a main body, a first snap-fit ​​portion, and a second snap-fit ​​portion. The first and second snap-fit ​​portions are located at opposite ends of the main body. The first snap-fit ​​portion can snap onto the coil component, preventing the pressure plate from detaching from the coil component. The second snap-fit ​​portion can be fixedly connected to or limit the valve body, restricting the relative movement between the pressure plate and the valve body. This snap-fit ​​fixing method eliminates the need for riveting when assembling the coil component, pressure plate, and valve body, enabling miniaturization of the coil component, facilitating assembly, and reducing costs to some extent. Attached Figure Description

[0007] Figure 1 This is an exploded structural diagram of a first embodiment of a valve device provided in this application;

[0008] Figure 2 for Figure 1 A front view structural schematic diagram of a valve device is shown;

[0009] Figure 3 for Figure 2 A schematic cross-sectional view of a valve device along plane AA is shown.

[0010] Figure 4 for Figure 2 A schematic cross-sectional view of a valve device along plane AA is shown.

[0011] Figure 5 for Figure 1 The diagram shows the assembly structure of the coil components and the pressure plate.

[0012] Figure 6 for Figure 1 A three-dimensional structural schematic diagram of a valve device coil component is shown.

[0013] Figure 7 for Figure 6 A side view of the coil component shown.

[0014] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the coil component along plane BB.

[0015] Figure 9 for Figure 6 A top view of the coil component shown.

[0016] Figure 10 for Figure 9 The diagram shows a partial structural schematic of the coil component.

[0017] Figure 11 for Figure 1 A three-dimensional structural schematic diagram of a valve device pressure plate is shown.

[0018] Figure 12 for Figure 11 The diagram shows a front view of the pressure plate.

[0019] Figure 13 for Figure 11 A structural schematic diagram of the pressure plate from another perspective;

[0020] Figure 14 for Figure 11 The diagram shows a broken cross-sectional view of the pressure plate with added reinforcing ribs.

[0021] Figure 15 for Figure 11 The diagram shows a broken cross-sectional view of the pressure plate with an additional reinforcing rib.

[0022] Figure 16 A schematic diagram of the assembly structure of the coil component and the pressure plate of a second embodiment of a valve device provided in this application;

[0023] Figure 17 for Figure 16 A schematic diagram of the three-dimensional structure of the pressure plate shown;

[0024] Figure 18 A schematic diagram of the assembly structure of the coil component and the pressure plate of a third embodiment of a valve device provided in this application;

[0025] Figure 19 for Figure 18 The diagram shows a top view of the coil assembly and pressure plate assembly.

[0026] Figure 20 A schematic diagram of the assembly structure of the coil component and the pressure plate of a fourth embodiment of a valve device provided in this application (in an unpressed state);

[0027] Figure 21 for Figure 20 A schematic diagram of the three-dimensional structure of the pressure plate shown;

[0028] Figure 22 for Figure 20 The diagram shows the assembly structure of the coil components and pressure plate (in the pressed state);

[0029] Figure 23 This is a three-dimensional structural schematic diagram of a fifth embodiment of a valve device provided in this application;

[0030] Figure 24 This is a three-dimensional structural schematic diagram of a sixth embodiment of a valve device provided in this application.

[0031] Figure label:

[0032] 100. Valve device; 1. Coil component; 11. First slot; 11'. Second slot; 111. First part; 111a. Groove; 112. Second part; 113. Opening; 114. First abutting part; 12. Groove; 121. First limiting part; 122. Second limiting part; 123. Third limiting part; 13. First end face; 14. Bottom end face; 2. Pressure plate; 21. Main body; 22. First snap-fit ​​part; 221. First bending part; 221a. Fourth limiting part; 221b. Second abutting part; 221c. Protrusion; 222. Second bending part; 222a. 222b, Third abutment portion; 223, Third bend portion; 223a, Second bend portion; 223b, Fourth abutment portion; 224, Positioning bend portion; 225, Snap-fit ​​bend portion; 225a, Snap-fit ​​main body portion; 225b, Third bend portion; 225c, Fourth bend portion; 23, Second snap-fit ​​portion; 231, Fourth bend portion; 232, Fifth bend portion; 233, Sixth bend portion; 234, Seventh bend portion; 24, Reinforcing rib; 3, Valve body; 31, Valve body cavity; 32, First limiting groove; 33, Second limiting groove; 34, Third limiting groove; 4, Valve component. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0034] Valve device 100 is widely used in automotive thermal management systems, such as vehicle air conditioning systems and vehicle battery cooling systems. Valve device 100 generally functions as a throttling element or a switching element. Valve device 100 includes a coil component 1, a pressure plate 2, a valve body 3, and a valve component 4. Valve device 100 is electrically and / or signal-connected to the outside world through the coil component 1. The valve body 3 includes a valve body cavity 31, with at least a portion of the valve component 4 located within the valve body cavity 31. The valve component 4 is fixedly or partially connected to the valve body 3, with connection methods including threaded connections. One end of the pressure plate 2 is partially connected to the coil component 1, specifically through a snap-fit ​​connection, which restricts the radial rotation of the coil component 1 in the valve body 3. The other end is also partially connected to the valve body 3, specifically through a snap-fit ​​or threaded connection, which restricts the axial movement of the coil component 1 in the valve body 3. This facilitates the fixed connection between components and further promotes the stable operation of valve device 100. This structure can be applied not only to the valve device in this embodiment but also to reversing solenoid valves, etc.

[0035] refer to Figures 1-15As shown, in one embodiment of the valve device 100 provided in this application, the coil component 1 includes a first slot 11, a second slot 11', a groove 12, and a first end face 13. The first end face 13 is located at the bottom of the coil component 1, that is, the surface that contacts the valve body 3, and the first end face 13 can abut against the valve body 3. In this embodiment, the groove 12 is away from the first end face 13 relative to the first slot 11. Of course, in other specific embodiments, the groove 12 may also be closer to the first end face 13 relative to the first slot 11. In this embodiment, the first slot 11 and the second slot 11' are located on the first end face 13 and are recessed along the axial direction of the coil component 1 from the first end face 13. The openings of the first slot 11 and the second slot 11' face towards the outer peripheral wall of the coil component 1, that is, the first slot 11 and the second slot 11' face through the outer peripheral wall of the coil component 1 in the radial direction. This allows for two assembly methods for the pressure plate 2 and the coil component 1. One method is to assemble the pressure plate 2 from the first end face 13 into the first slot 11 and the second slot 11' in the axial direction of the coil component 1. The other method is to assemble the pressure plate 2 into the first slot 11 and the second slot 11' from the opening of the first slot 11 and the second slot 11', that is, from the peripheral wall of the coil component 1 in the radial direction of the coil component 1. Both methods can achieve the assembly of the pressure plate 2 and the coil component 1. To diversify the installation angles of the coil component 1 with the pressure plate 2 and the valve body 3 to adapt to different production needs, the pressure plate 2 and the coil component 1 need to be assembled at multiple angles. The number of slots can be set according to the actual assembly angle of the coil component 1; the more slots, the more adjustable angles. In this embodiment, there are 8 slots, meaning the adjustable angle between the pressure plate 2 and the coil component 1 is 45°. The pressure plate 2 can engage with the slots to restrict the coil component 1 from rotating relative to the pressure plate 2 circumferentially. Simultaneously, the pressure plate 2 can also engage with the groove 12 to restrict the coil component 1 from moving relative to the pressure plate 2 axially. In this embodiment, the groove 12 is arranged around the circumference of the coil component 1. This arrangement facilitates the assembly of the pressure plate 2 and the groove 12 at multiple angles. Of course, in other specific embodiments, the groove 12 does not necessarily need to be arranged around the circumference of the coil component 1; it only needs to be positioned to engage with the pressure plate 2.

[0036] like Figures 5-10As shown, the first slot 11 is similar to the shape of a "T". The opening of the first slot 11 is arranged radially outward along the coil component 1. The second slot 11' has the same structure as the first slot 11. The first slot 11 penetrates the outer peripheral wall of the coil component 1 but does not penetrate its inner peripheral wall. This facilitates the assembly of the pressure plate 2 with the coil component 1 and also helps to ensure the sealing of the connection between the coil component 1 and the valve component 4. The first slot 11 includes a first part 111, a second part 112, and an opening 113. The first part 111 is farther from the opening 113 than the second part 112. In the radial direction perpendicular to the coil component 1, the width of the first part 111 is greater than the width of the second part, thus creating a step between the first part 111 and the second part 112, namely a first abutment part 114. The first part 111 has a cavity 111a, and the first abutment part 114 is part of the wall of the cavity 111a. Meanwhile, the width of the second part 112 is smaller than the width of the first part 111, which facilitates a secure and stable installation of the pressure plate 2 and the coil component 1, preventing the pressure plate 2 from falling off. The opening 113 is connected to the outer peripheral wall of the coil component 1 and opens towards the outer peripheral wall of the coil component 1. The opening 113 is angled, which facilitates installation and provides a certain guiding effect for the assembly of the pressure plate 2 and the slot. In the background technology, the assembly of the pressure plate 2 and the coil component 1 is carried out by riveting the rivet of the coil component 1. This method has requirements on the volume of the coil component 1 and the strength of the rivet. When the volume is large, a strong rivet is selected. After riveting the rivet, the part of the rivet will not overflow the outer peripheral wall of the coil component 1. However, when the coil component 1 is miniaturized, if a rivet of the same strength is riveted, the part of the rivet will overflow the outer peripheral wall of the coil component 1, which will have a certain impact on the appearance of the product. However, if a weak rivet is selected for riveting, it will have a certain impact on the performance of the product. In contrast, the setting of the slot is conducive to the miniaturization of the coil component 1, and can also realize multi-angle assembly.

[0037] The first slot 11 also includes a bottom end face 14. In this embodiment, the groove 12 is away from the first end face 13 relative to the first slot 11. The groove 12 is arranged around the outer periphery of the coil component 1, which also facilitates multi-angle installation. In other specific embodiments, the groove 12 does not necessarily have to be arranged around the outer periphery of the coil component 1. The corresponding groove 12 can be set only at the place where it mates with the pressure plate 2. In this embodiment, the opening of the groove 12 faces the outer peripheral wall of the coil component 1. The groove 12 includes a first limiting part 121, a second limiting part 122, and a third limiting part 123. The first limiting part 121 and the third limiting part 123 are arranged opposite to each other and are arranged radially along the coil component 1. The second limiting part 122 is located between the third limiting part 123 and the first limiting part 121. In this embodiment, the bottom end face 14 is located between the first limiting part 121 and the first end face 13. This arrangement is advantageous in increasing the connection strength when the coil component 1 and the pressure plate 2 are engaged, making the assembly more stable. In another embodiment, if the strength of the first slot 11 is high, that is, if the first abutment part 114 is subjected to a large force, the bottom end face 14 can be coplanar with the first limiting part 121 or be lower than the first limiting part 121.

[0038] like Figure 4 and Figure 8 As shown, in this embodiment, the features of the second limiting part 122 must be consistent with the features that mate with the pressure plate 2, which helps to ensure the stability of the mating between the pressure plate 2 and the coil component 1. In this embodiment, the second limiting part 122 is an arc surface, so the part where the pressure plate 2 mates with the second limiting part 122 must adopt a corresponding arc surface design so that the two can fit together. Of course, in other specific embodiments, the second limiting part 122 can also be other shapes, as long as the part where the pressure plate 2 mates with it is designed to fit it. The distance between the first limiting part 121 and the second limiting part 122, i.e., the thickness of the groove 12, is set to match the thickness of the part where the pressure plate 2 engages.

[0039] like Figures 11-15 As shown, the pressure plate 2 is made of a certain thin metal sheet and is elastic. The pressure plate 2 includes a main body 21, a first locking part 22, and a second locking part 23. The main body 21 is similar to a plate-like structure. The first locking part 22 bends inward from the radial direction of the main body 21 relative to the coil component 1. The second locking part 23 extends from the axial direction of the main body 21 relative to the valve body 3. The first locking part 22 can engage with the coil component 1 to restrict the axial movement and circumferential rotation of the coil component 1 relative to the pressure plate 2. The second locking part 23 can engage with the valve body 3 to restrict the axial movement and circumferential rotation of the valve body 3 relative to the pressure plate 2. Figure 14 and Figure 15As shown, a reinforcing rib 24 can be provided between the main body 21 and the first snap-fit ​​part 22 and / or between the main body 21 and the second snap-fit ​​part 23. This helps to strengthen the pressure plate 2 and further makes the connection between the pressure plate 2 and the coil component 1 or the valve body 3 more stable.

[0040] Furthermore, the first snap-fit ​​portion 22 includes a first bending portion 221, a second bending portion 222, and a third bending portion 223. The first bending portion 221 is bent inward from the lower end of the main body portion 21 in the radial direction relative to the coil component 1. The second bending portion 222 and the third bending portion 223 are bent inward from both ends of the main body portion 21 in the radial direction relative to the coil component 1, respectively. The first bending portion 221 includes a fourth limiting portion 221a and a second abutting portion 221b. The fourth limiting portion 221a is located on the side end face of the first bending portion 221, that is, it is arranged in the radial direction towards the coil component 1. The fourth limiting portion 221a cooperates with the second limiting portion 122 of the coil component 1. The second abutment portion 221b is located at the end face of the first bent portion 221, i.e., facing the second bent portion 222 or the third bent portion 223. The second abutment portion 221b can abut against the first limiting portion 121 of the coil component 1 to ensure stable assembly of the pressure plate 2 and the coil component 1. The cooperation between the fourth limiting portion 221a and the second limiting portion 122, and the cooperation between the second abutment portion 221b and the first limiting portion 121, restricts the movement of the coil component 1 relative to the pressure plate 2 in its axial direction. Figure 12 As shown, a protrusion 221c can be added to the first bending portion 221. The protrusion 221c protrudes in the opposite or the same direction as the main body portion 21. The protrusion 221c helps to strengthen the strength and rigidity of the first bending portion 221, so that when the third abutting surface 222 and the first limiting portion 121 are engaged, the force on the first limiting portion 121 is more uniform, which further helps to make the engagement between the first bending portion 221 and the groove 12 more stable. On the other hand, the increase of the protrusion 221c increases the thickness of the first bending portion 221, and the width of the groove 12 that it engages with, i.e. the distance between the first limiting portion 121 and the third limiting portion 123, increases accordingly. This can reduce the processing difficulty of the groove 12 and reduce the processing cost to a certain extent.

[0041] The second bend 222 and the third bend 223 respectively engage with the first slot 11 and the second slot 11' of the coil component 1, restricting the rotation of the coil component 1 in its circumferential direction. The second bend 222 includes a first bend 222a and a third abutment 222b, and the third bend 223 includes a second bend 223a and a fourth abutment 223b. In this embodiment, the first bend 222a and the second bend 223a are bent outwards and towards the main body 21, and the first engaging portion 22 and the second engaging portion 23 are located at the ends of the first bend 222a and the second bend 223a, respectively. Figures 5-13As shown, the pressure plate 2 is installed from the opening 113 along the radial direction of the coil component 1 towards the positions of the first slot 11 and the second slot 11'. At the same time, the first bent portion 221 of the pressure plate 2 engages with the groove 12. When the pressure plate 2 is engaged with the coil component 1, the side wall of the second bent portion 222 of the pressure plate 2 can engage with the side wall of the opening 113 of the first slot 11 with a small gap, and the third abutting portion 222b abuts with the first abutting portion 114 of the first slot 11. Similarly, the side wall of the third bent portion 223 of the pressure plate 2 can engage with the side wall of the opening 113 of the second slot 11' with a small gap, and the fourth abutting portion 223b abuts with the first abutting portion 114 of the second slot 11'. The side walls of the second bent portion 222 and the third bent portion 223 of the pressure plate 2 engage with the side walls of their respective openings 113 with a small gap, so that the coil component 1 cannot rotate circumferentially.

[0042] The pressure plate 2 also includes a second engaging portion 23, which can engage with the valve body 3 to restrict the axial movement and circumferential rotation of the valve body 3 relative to the pressure plate 2. The second engaging portion 23 includes a fourth bend 231, a fifth bend 232, a sixth bend 233, and a seventh bend 234. The fourth bend 231 bends inward from the upper end of the main body 21 toward the first bend 221. The fifth bend 232 extends from the second bend 222 toward the fourth bend 231 and bends outward at a certain angle. Similarly, the sixth bend 233 bends from the third bend 223 toward the fourth bend 231 and bends outward at a certain angle. The seventh bend 234 bends outward from the upper end of the main body in the opposite direction to the fourth bend 231. The seventh bend 234 facilitates the engagement and disengagement of the pressure plate 2 and the valve body 3.

[0043] like Figure 2 and Figure 11 As shown, the valve body 3 includes a first limiting groove 32, a second limiting groove 33, and a third limiting groove 34. The first limiting groove 32 extends through the sides of both ends of the valve body 3. The second limiting groove 33 and the third limiting groove 34 are respectively connected to the first limiting groove 32. There is a protrusion between the first limiting groove 32, the second limiting groove 33, and the third limiting groove 34. When the pressure plate 2 is assembled with the valve body 3, the fourth bent part 231 is embedded in the second limiting groove, and the fifth bent part 232 is embedded in the third limiting groove 34. The second limiting groove 33 and the third limiting groove 34 have a certain positioning and guiding function, which facilitates the engagement of the pressure plate 2 and the valve body 3. The fourth bent part 231 is embedded in the first limiting groove 32 and latches the bottom of the protrusion to limit the axial movement of the valve body 3 relative to the pressure plate 2. Of course, the connection between the pressure plate 2 and the valve body 3 is not limited to the latching method; other methods can also be used, such as... Figure 23 and Figure 24As shown, in other embodiments, the second snap-fit ​​portion 23 of the pressure plate 2 can also be fixedly connected to the valve body 3 by means of a threaded connection.

[0044] In the second embodiment of this application, the main difference from embodiment 1 is that, as Figure 16 and Figure 17 As shown, the first curved portion 222a and the second curved portion 223a of the pressure plate 2 are bent inward toward the main body portion 21, and the third abutting portion 222b is located on the side or end of the first curved portion 222a. Similarly, the fourth abutting portion 223b is also located on the side or end of the second curved portion 223a. Depending on the bending angle, the positions of the third abutting portion 222b and the fourth abutting portion 223b are also different. The first slot 11 of the coil component 1 has the same or similar structure as that in the first embodiment, and is not shown here. As described in detail, the second bend 222 engages with the first slot 11, and the third bend 223 engages with the second slot 11'. That is, the side wall of the second bend 222 and the side wall of the opening 113 of the first slot 11 are in close contact with a small gap. The third abutting part 222b abuts with the first abutting part 114, the side wall of the third bend 223 and the side wall of the opening 113 of the second slot 11' are in close contact with a small gap, and the fourth abutting part 223b engages with the first abutting part 114, thereby restricting the rotation of the coil component 1 along its circumference.

[0045] The main difference between the third embodiment of this application and the other embodiments is that, as Figure 18 and Figure 19 As shown, the first slot 11 and the second slot 11' of the coil component 1 are separated by a protrusion, but they are connected near their outer peripheral walls. The large opening also facilitates the assembly of the pressure plate 2 and the coil component 1. The side wall of the second bent portion 222 of the pressure plate 2 can be fitted with the side wall of the opening portion 113 of the first slot 11 with a small gap. The third abutting portion 222b abuts with the first abutting portion 114 of the first slot 11. Similarly, the side wall of the third bent portion 223 of the pressure plate 2 can be fitted with the side wall of the opening portion 113 of the second slot 11' with a small gap. The fourth abutting portion 223b abuts with the first abutting portion 114 of the second slot 11'. The side walls of the second bent portion 222 and the third bent portion 223 of the pressure plate 2 are fitted with the side walls of their respective opening portions 113 with a small gap, so that the coil component 1 cannot rotate circumferentially. In this embodiment, the pressure plate 2 and the valve body 3 are fixedly connected or limit-connected, specifically by a threaded connection, such as... Figure 16 As shown, the pressure plate 2 has through holes, which facilitates the fixed connection between the pressure plate 2 and the valve body 3.

[0046] In the fourth embodiment of this application, the main difference from the other embodiments is that, as Figures 20-22As shown, the groove 12 communicates with the first card slot 11. The first card slot 11 and the second card slot 11' have the same structural features. The first card slot 11 and the second card slot 11' are similar to the shape of "冂", with one side opening towards the outer peripheral wall of the coil component 1. The first card slot 11 includes a first part 111 and an opening part 113. The first card slot 11 penetrates the outer peripheral wall of the coil component 1 and does not penetrate its inner peripheral wall. This facilitates the assembly of the pressing plate 2 and the coil component 1, and also helps to ensure the sealing performance between the coil component 1 and the valve component 4. A chamfer transition is adopted between the coil component 1 and the first card slot 11, and the opening part 113 is provided, which is conducive to guiding the assembly of the pressing plate 2 with the first card slot 11 and the second card slot 11'. In this embodiment, the number of card slots is 8, which is to limit the installation angle between the coil component 1, the pressing plate 2 and the valve body 3. Of course, in other embodiments, the number of card slots can be specifically designed according to the actual situation.

[0047] The pressing plate 2 includes a main body part 21, a first clamping part 22 and a second clamping part 23. The second clamping part 23 is similar to that in the first embodiment, so no specific description will be made here. The first clamping part 22 includes a first bending part 221, a positioning bending part 224 and a clamping bending part 225. The positioning bending part 224 bends from the side end face of the first bending part 221 towards the coil component 1 in the direction of the second clamping part 23. The positioning bending part 224 is arranged opposite to the main body part 21. Assuming there is a central plane between the main body part 21 and the positioning bending part 224, the horizontal projections of the main body part 21 and the positioning bending part 224 on the central plane partially overlap. In the free state, the clamping bending part 225 bends from the other end face of the first bending part 221 towards the first end face 13 of the coil component 1 and is arranged along the circumference of the coil component 1. The clamping bending part 225 includes a clamping main body part 225a, a third bending part 225b and a fourth bending part 225c. The third bending part 225b and the fourth bending part 225c bend from both ends of the clamping main body part 225a along the circumference of the coil component 1 towards the outside of the coil component 1. In this embodiment, the number of clamping bending parts 225 is four, which are symmetric about the central plane of the positioning bending part 224 and are installed in cooperation with the corresponding first card slot 11 and the second card slot 11'. Then, the clamping bending part 225 is bent towards the direction of the groove 12 of the coil component 1, so that the third bending part 225b and the fourth bending part 225c respectively abut against the inner wall of the second card slot 11'. The cooperation of the four clamping bending parts 225 with the corresponding second card slot 11' increases the contact area between the pressing plate 2 and the coil component 1, which is conducive to making the cooperation between the pressing plate 2 and the coil component 1 more stable. Of course, in other embodiments, if the elasticity of the clamping bending part 225 needs to be enhanced, a bend can also be added at the end of the clamping bending part 225, which increases the volume of the clamping bending part 225 and facilitates the cooperation between the clamping bending part 225 and the first card slot 11, that is, it is convenient for the assembly of the pressing plate 2 and the coil component 1.

[0048] The above examples illustrate the principles and implementation methods of the present invention. These embodiments are merely illustrative and intended to aid in understanding the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A valve device, characterized in that, The device includes a coil component (1), a pressure plate (2), and a valve body (3). The pressure plate (2) includes a main body (21), a first latching part (22), and a second latching part (23). The first latching part (22) and the second latching part (23) are located at both ends of the main body (21). The first latching part (22) extends from the main body (21) along the radial direction of the coil component (1), and the second latching part (23) extends from the main body (21) along the axial or radial direction of the valve body (3). The first latching part (22) can latch with the coil component (1) to restrict the pressure plate (2) from disengaging from the coil component (1). The second latching part (23) can be fixedly connected or limited to the valve body (3) to restrict the relative movement between the pressure plate (2) and the valve body (3).

2. The valve device according to claim 1, characterized in that, The first snap-fit ​​portion (22) includes a first bend portion (221), which extends from the end of the main body portion (21) away from the valve body (3) in the radial direction of the coil component (1). The coil component (1) has a groove (12) which is provided along the outer peripheral wall of the coil component (1). Part of the first bend portion (221) is embedded in the groove (12) to restrict the axial movement of the pressure plate (2) relative to the coil component (1).

3. The valve device according to claim 2, characterized in that, The groove (12) includes a first limiting part (121) and a second limiting part (122). The first limiting part (121) is located on the side of the groove (12), and the second limiting part (122) is located at the bottom of the groove (12). The first bending part (221) includes a fourth limiting part (221a) and a second abutting part (221b). The fourth limiting part (221a) is located at the end of the first bending part (221) facing the coil component (1), and the second abutting part (221b) is disposed facing the valve body (3). The first limiting part (121) can abut against the second abutting part (221b), and the second limiting part (122) can engage with the fourth limiting part (221a) to restrict the axial movement of the pressure plate (2).

4. The valve device according to any one of claims 1-3, characterized in that, The first snap-fit ​​portion (22) further includes a second bent portion (222) and a third bent portion (223). The second bent portion (222) and the third bent portion (223) are disposed opposite to each other. The second bent portion (222) extends radially from one side end of the main body portion (21) along the coil component (1), and the third bent portion (223) extends radially from the other side end of the main body portion (21) along the coil component (1). The coil component (1) has a first snap-fit ​​groove. 11) and the second slot (11'), the first slot (11) and the second slot (11') are located at the end of the coil component (1), the first slot (11) and the second slot (11') are connected to the outer peripheral wall of the coil component (1), the second bend (222) is engaged with the first slot (11), and the third bend (223) is engaged with the second slot (11'), thereby restricting the circumferential rotation of the coil component (1) relative to the pressure plate (2).

5. The valve device according to claim 4, characterized in that, The first slot (11) has the same features as the second slot (11'). The first slot (11) has a first part (111), a second part (112) and an opening (113). The first part (111) is away from the opening (113) relative to the second part (112). The opening (113) is connected to the outer peripheral wall of the coil component (1). The first engaging part (22) can engage with the first slot (11).

6. The valve device according to claim 5, characterized in that, The first part (111) has a first abutting part (114), the maximum size of the first part (111) is greater than the maximum size of the second part (112), the first abutting part (114) is located at the step between the first part (111) and the second part (112), and the second bent part (222) can abut against the first abutting part (114).

7. The valve device according to any one of claims 1-3, characterized in that, The first snap-fit ​​portion (22) includes a positioning bend portion (224) and a snap-fit ​​bend portion (225). The positioning bend portion (224) is disposed opposite to the main body portion (21) 21. The positioning bend portion (224) bends from the first bend portion (221) toward the end face of the coil component (1) 1 toward the second snap-fit ​​portion (23). There are multiple snap-fit ​​bend portions (225). The snap-fit ​​bend portions (225) are arranged from the first bend portion (221) away from the coil component (23). The end face of 1) is bent toward the direction of the second snap-fit ​​part (23). The coil component (1) has a first snap-fit ​​groove (11) and a second snap-fit ​​groove (11'). The first snap-fit ​​groove (11) and the second snap-fit ​​groove (11') are connected to the outer peripheral wall of the coil component (1). The positioning bend (224) is limited to the first snap-fit ​​groove (11). The snap-fit ​​bend (225) can snap-fit ​​with the second snap-fit ​​groove (11') to restrict the circumferential rotation of the coil component (1) relative to the pressure plate (2).

8. The valve device according to claim 7, characterized in that, The snap-fit ​​bending portion (225) includes a snap-fit ​​main body portion (225a), a third bending portion (225b), and a fourth bending portion (225c). The third bending portion (225b) and the fourth bending portion (225c) extend from the snap-fit ​​main body portion (21) along the axial direction of the coil component (1) and away from the coil component (1). The second snap-fit ​​groove (11') includes a first part (111) and an opening (113). The first part (111) is away from the outer peripheral wall of the coil component (1) relative to the opening (113). The opening (113) is connected to the outer peripheral wall of the coil component (1). The third bending portion (225b) and the fourth bending portion (225c) can abut against the side wall of the first part (111).

9. The valve device according to any one of claims 4 or 7, characterized in that, The valve body (3) includes a first limiting groove (32) located on the outer wall of the valve body (3). The second snap-fit ​​part (23) includes a fourth bending part (231). The fourth bending part (231) bends from the end of the main body part (21) near the valve body (3) toward the first bending part (221). The fourth bending part (231) can snap into the first limiting groove (32) to restrict the relative movement of the pressure plate (2) and the valve body (3).

10. The valve device according to any one of claims 4 or 7, characterized in that, The second snap-fit ​​part (23) includes a through hole, and the valve body (3) is threadedly connected to the second snap-fit ​​part (23) through the through hole.

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