Valve, vibration reduction system and vehicle

Abstract

The utility model discloses a valve, a vibration reduction system and a vehicle. The valve comprises a shell. The valve body is arranged in the shell, and a matching groove is formed in one end of the valve body; the first valve element is arranged in the shell and located between one end of the valve body and the inner wall of the shell, the end, facing the valve body, of the first valve element is provided with a matching part, and the matching part is movably matched in the matching groove. The outer circumferential surface of the matching part obliquely extends towards the direction close to the central axis of the first valve element from the direction from the first valve element to the valve body, the inclination angle of the outer circumferential surface of the matching part is alpha, and alpha is larger than 0 degree and smaller than or equal to 60 degrees. According to the valve, the acting force between the first valve element and the valve body is increased, and closing of the valve is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction, in particular to a valve, a vibration reduction system and a vehicle. Background Art

[0002] At present, the solenoid valve includes a housing, a moving iron core, a valve needle and a valve body. The valve body and the moving iron core are arranged in the housing, and the moving iron core can drive the valve needle to move in the housing to open and close the valve port of the solenoid valve. In the related art, when the distance between the moving iron core and the valve body is large, the magnetic attraction of the valve body to the moving iron core is relatively small, which is not conducive to the closing of the solenoid valve. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a valve that increases the force between the first valve core and the valve body, which is conducive to closing the valve.

[0004] Another object of the utility model is to provide a vibration reduction system using the valve.

[0005] Another object of the present invention is to provide a vehicle using the above-mentioned vibration reduction system.

[0006] According to the valve embodiment of the first aspect of the utility model, the invention comprises: a shell; a valve body, the valve body is arranged in the shell, and a matching groove is formed at one end of the valve body; a first valve core, the first valve core is arranged in the shell, the first valve core is located between the one end of the valve body and the inner wall of the shell, and the end of the first valve core facing the valve body has a matching portion, and the matching portion can be movably matched in the matching groove, and the outer peripheral surface of the matching portion extends obliquely from the direction of the first valve core toward the valve body toward the direction close to the central axis of the first valve core, and the inclination angle of the outer peripheral surface of the matching portion is α, wherein α satisfies: 0°<α≤60°.

[0007] According to the valve of the first aspect of the utility model, by setting the inclination angle α of the outer peripheral surface of the matching part to satisfy 0°<α≤60°, the magnetic attraction of the valve body to the first valve core gradually increases with the increase of the inclination angle of the outer peripheral surface of the matching part, so that the valve body has a greater attraction to the first valve core, which is beneficial to the movement of the first valve core toward the valve body, thereby facilitating the opening and closing of the valve, and improving the performance of the valve.

[0008] According to some embodiments of the present invention, the angle α further satisfies: α=60°.

[0009] According to some embodiments of the present invention, the shape of the outer peripheral surface of the matching portion is matched with the shape of the inner wall surface of the matching groove.

[0010] According to some embodiments of the present invention, the longitudinal cross-section of the matching portion is trapezoidal.

[0011] According to some embodiments of the present invention, an end surface of the matching portion facing the valve body is formed as a plane, and / or a bottom wall of the matching groove is formed as a plane.

[0012] According to some embodiments of the present invention, there is a gap between an end surface of the matching portion facing the valve body and a bottom wall of the matching groove.

[0013] According to some embodiments of the present invention, the minimum distance between an end surface of the mating portion facing the valve body and the bottom wall of the mating groove is d, wherein d satisfies: 0.5mm≤d≤1.7mm.

[0014] According to some embodiments of the utility model, the other end of the valve body has a valve port; the valve further includes: a second valve core, which is arranged at an end of the valve body away from the first valve core; a valve stem, one end of the valve stem is connected to the first valve core, and the other end of the valve stem is connected to the second valve core after passing through the valve body, and the first valve core drives the second valve core to move in the shell through the valve stem to open and close the valve port.

[0015] According to some embodiments of the present utility model, a first through hole is formed on the matching portion, and one end of the first through hole facing the valve body passes through one end surface of the matching portion facing the valve body;

[0016] A second through hole is formed on the bottom wall of the matching groove, the second through hole and the first through hole are opposite to each other along the axial direction of the valve body, and the one end of the valve stem passes through the first through hole and the second through hole and is connected to the second valve core.

[0017] The vibration reduction system according to the second aspect of the present invention comprises the valve according to the first aspect.

[0018] The vehicle according to the third aspect of the present invention comprises the valve according to the first aspect or the shock absorbing system according to the second aspect.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a valve according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Sectional view along line AA;

[0023] Figure 3 It is a magnetic induction cloud diagram of a valve according to an embodiment of the utility model;

[0024] Figure 4 is a data diagram showing the effect of the structure of the first valve core of the valve according to an embodiment of the utility model on the electromagnetic force;

[0025] Figure 5 It is a data diagram showing the influence of the inclination angle of the outer peripheral surface of the matching part of the valve according to the embodiment of the utility model on the electromagnetic force.

[0026] Reference numerals:

[0027] 100. Valve;

[0028] 1. Shell; 2. Valve body; 21. Matching groove;

[0029] 211, second through hole; 22, valve port;

[0030] 3. first valve core; 31. matching portion; 311. first through hole;

[0031] 4. Second valve core; 5. Valve stem;

[0032] 6. Coil; 7. Elastic part; 8. Magnetic shoulder;

[0033] 9. Magnetic isolation tube; 10. Coil bushing. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 5 The valve 100 according to the first embodiment of the utility model is described. For example, the valve 100 is a solenoid valve, but is not limited thereto.

[0035] like Figure 1 and Figure 2 As shown, the valve 100 according to the embodiment of the first aspect of the utility model includes a housing 1, a valve body 2 and a first valve core 3.

[0036] Specifically, the valve body 2 is disposed in the housing 1, a matching groove 21 is formed at one end of the valve body 2, the first valve core 3 is disposed in the housing 1, the first valve core 3 is located between one end of the valve body 2 and the inner wall of the housing 1, and the end of the first valve core 3 facing the valve body 2 has a matching portion 31, and the matching portion 31 can be movably matched in the matching groove 21. For example, in Figure 1and Figure 2 In the example, the upper part of the valve body 2 is located in the housing 1, a matching groove 21 is formed at the upper end of the valve body 2, the first valve core 3 is located above the valve body 2, and the lower end of the first valve core 3 has a matching portion 31, and the matching portion 31 can move along the central axis of the valve body 2 toward or away from the valve body 2. For example, when the first valve core 3 moves downward, the matching portion 31 moves downward relative to the valve body 2 in the matching groove 21. When the first valve core 3 moves upward, the matching portion 31 moves upward relative to the valve body 2 in the matching groove 21, and the distance between the end face of the matching portion 31 and the bottom wall of the matching groove 21 gradually increases. Therefore, through the movement of the first valve core 3 relative to the valve body 2, the first valve core 3 can drive the valve stem 5 connected to the second valve core 4 to move, and through the movement of the valve stem 5, the second valve core 4 connected to the valve stem 5 can be driven to move to open or close the valve port 22.

[0037] Combination Figure 1 and Figure 2 , from the direction of the first valve core 3 toward the valve body 2, the outer peripheral surface of the matching portion 31 is inclined and extends toward the direction close to the central axis of the first valve core 3, and the inclination angle of the outer peripheral surface of the matching portion 31 is α, wherein α satisfies: 0°<α≤60°.

[0038] For example, in Figure 1 and Figure 2 In the example, the fitting portion 31 is roughly in the shape of an inverted cone, and from top to bottom, the outer peripheral surface of the fitting portion 31 gradually approaches the central axis of the first valve core 3. When the inclination angle of the outer peripheral surface of the fitting portion 31 is 0°, that is, when the fitting portion 31 is not provided, the lower end surface of the first valve core 3 is a plane, and the first valve core 3 and the valve body 2 are in a horizontal plane matching state. When the valve port 22 is open, that is, there is a certain distance between the first valve core 3 and the valve body 2, the magnetic attraction of the valve body 2 on the first valve core 3 is small, and the attraction of the valve body 2 on the first valve core 3 is small, which is not conducive to the movement of the first valve core 3 toward the valve body 2. When the inclination angle of the outer peripheral surface of the fitting portion 31 is greater than 60°, as the inclination angle increases, the magnetic attraction of the valve body 2 on the first valve core 3 gradually decreases. Therefore, by setting the inclination angle α of the outer peripheral surface of the matching part 31 to satisfy 0°<α≤60°, the magnetic attraction of the valve body 2 to the first valve core 3 gradually increases with the increase of the inclination angle of the outer peripheral surface of the matching part 31, so that the valve body 2 has a greater attraction for the first valve core 3, and the magnetization strength of the first valve core 3 is increased, which is beneficial to the movement of the first valve core 3 toward the valve body 2, thereby facilitating the opening and closing of the valve 100, thereby improving the performance of the valve 100.

[0039] like Figure 3 and Figure 4 As shown, by using the matching portion 31 and the matching groove 21 of the present application, the magnetic attraction between the first valve core 3 and the valve body 2 is relatively large, which is conducive to the smooth closing of the valve 100. Figure 4 It can be seen that Figure 4 The horizontal axis in represents the distance between the free end face of the matching part 31 and the bottom wall of the matching groove 21 (in mm), the vertical axis represents the electromagnetic force of the valve body 2 on the first valve core 3 (in N), and the inclined surface represents that the outer peripheral surface of the matching part 31 in this application is an inclined surface. Compared with the movable iron core structure combining trapezoid and chamfer in the traditional technology, the matching part 31 of this application is reasonably arranged, and the magnetic attraction of the first valve core 3 and the valve body 2 is relatively large at different distances between the free end face of the matching part 31 and the bottom wall of the matching groove 21.

[0040] According to the valve 100 of the first aspect of the utility model, by setting the inclination angle α of the outer peripheral surface of the matching part 31 to satisfy 0°<α≤60°, the magnetic attraction of the valve body 2 on the first valve core 3 gradually increases with the increase of the inclination angle of the outer peripheral surface of the matching part 31, so that the valve body 2 has a greater attraction for the first valve core 3, which is beneficial to the movement of the first valve core 3 toward the valve body 2, thereby facilitating the opening and closing of the valve 100, and improving the performance of the valve 100.

[0041] Further, α satisfies: α=60°. For example, when the inclination angles of the outer peripheral surface of the mating portion 31 are respectively tested to be 0°, 15°, 30°, 45° and 60°, the electromagnetic force changes as the gap between the lower end surface of the mating portion 31 and the bottom wall of the mating groove 21 gradually decreases. Figure 5 The horizontal axis in represents the distance between the free end surface of the matching portion 31 and the bottom wall of the matching groove 21 (in mm), and the vertical axis represents the electromagnetic force of the valve body 2 on the first valve core 3 (in N). Figure 5 It can be seen that when the inclination angle of the outer peripheral surface of the matching portion 31 is 60°, the magnetic attraction force of the valve body 2 on the first valve core 3 is the largest, that is, when the distance between the first valve core 3 and the valve body 2 is the farthest, the magnetic attraction force when the inclination angle of the outer peripheral surface of the matching portion 31 is 60° is greater than the magnetic attraction force when the inclination angle is other values. As a result, the interaction force between the valve body 2 and the first valve core 3 is further improved, which is more conducive to the first valve core 3 moving toward the valve body 2 after the coil 6 is energized to generate a magnetic field, and is more conducive to the use of the valve 100.

[0042] According to some embodiments of the present invention, Figure 2 The outer peripheral surface shape of the matching portion 31 is adapted to the inner wall shape of the matching groove 21. Figure 2In the example, the inclination angle of the outer peripheral surface of the matching portion 31 is the same as the inclination angle of the inner wall surface of the matching groove 21. In this way, when the valve port 22 is closed, that is, when the first valve core 3 is matched in the matching groove 21 and the distance between the first valve core 3 and the valve body 2 is relatively close, the first valve core 3 and the valve body 2 have a high degree of fit, which is conducive to the matching of the matching portion 31 and the matching groove 21, and also facilitates the movement of the matching portion 31 relative to the valve body 2. In addition, the inner wall surface of the matching groove 21 has a guiding effect on the movement of the matching portion 31, which improves the reliability of the movement of the first valve core 3, and the first valve core 3 is not easy to swing during the movement.

[0043] According to some embodiments of the present invention, referring to Figure 2 , the longitudinal direction of the mating portion 31 (for example, along Figure 2 The cross-sectional shape (in the up-down direction) of the valve body 2 is a trapezoid. With such a configuration, on the one hand, the magnetic attraction force of the valve body 2 on the first valve core 3 is relatively large, which is beneficial to the movement of the first valve core 3 toward the valve body 2, thereby facilitating the opening and closing of the valve port 22. On the other hand, the processing difficulty of the first valve core 3 is simplified, the precision requirement for the production of the first valve core 3 is reduced, and the production efficiency of the first valve core 3 is improved, thereby improving the production efficiency of the valve 100 and reducing the production cost of the valve 100. In addition, the effective contact area between the first valve core 3 and the valve body 2 can be increased, the starting electromagnetic force can be increased, and the inclined mating portion 31 has a better effect on enhancing the electromagnetic force, thereby improving the ability to open and close the valve 100.

[0044] According to some embodiments of the present invention, an end surface of the matching portion 31 facing the valve body 2 is formed as a plane, and / or a bottom wall of the matching groove 21 is formed as a plane.

[0045] For example, in Figure 2 In the example, the end surface of the matching portion 31 facing the valve body 2 is formed into a plane, and at the same time, the bottom wall of the matching groove 21 is formed into a plane. In this way, the matching portion 31 has low processing difficulty and high processing efficiency. Moreover, the processing difficulty of the matching groove 21 is also low, which is conducive to the formation of the matching groove 21, thereby improving the production efficiency of the valve body 2, and further improving the production efficiency of the valve 100.

[0046] According to some embodiments of the present invention, Figure 2 There is a gap between the end surface of the matching portion 31 facing the valve body 2 and the bottom wall of the matching groove 21. For example, Figure 2 In the state where the valve port 22 is closed, there is a gap between the lower end surface of the matching portion 31 and the bottom wall of the matching groove 21. Therefore, when the first valve core 3 moves toward the valve body 2, the first valve core 3 is not easy to hit the valve body 2, and the noise generated during the movement of the first valve core 3 can also be reduced, thereby improving the user experience and the performance of the valve 100.

[0047] According to some embodiments of the present invention, referring to Figure 2 The minimum distance between the end surface of the matching portion 31 facing the valve body 2 and the bottom wall of the matching groove 21 is d, where d satisfies: 0.5mm≤d≤1.7mm. Figure 2 In the example, the lower end face of the matching portion 31 is parallel to the bottom wall of the matching groove 21. When the valve port 22 is closed, when the minimum distance between the end face of the matching portion 31 facing the valve body 2 and the bottom wall of the matching groove 21 is less than 0.5 mm, the gap between the lower end face of the matching portion 31 and the bottom wall of the matching groove 21 is small, which increases the matching accuracy requirements of the first valve core 3 and the valve body 2, reduces the assembly efficiency, and also increases the movement noise of the first valve core 3. When the minimum distance between the end face of the matching portion 31 facing the valve body 2 and the bottom wall of the matching groove 21 is greater than 1.7 mm, the gap between the lower end face of the matching portion 31 and the matching groove 21 is large, which reduces the contact area between the outer peripheral surface of the matching portion 31 and the inner wall surface of the matching groove 21, thereby reducing the magnetic attraction of the valve body 2 to the first valve core 3. Therefore, by setting the minimum distance d between the end face of the matching portion 31 facing the valve body 2 and the bottom wall of the matching groove 21 to meet 0.5mm≤d≤1.7mm, the distance between the free end face of the matching portion 31 and the bottom wall of the matching groove 21 is moderate, which improves the magnetic attraction of the valve body 2 to the first valve core 3 and also improves the space utilization rate inside the housing 1. Moreover, the assembly efficiency of the first valve core 3 and the valve body 2 is also improved, and the noise generated by the use of the valve 100 is reduced.

[0048] According to some embodiments of the present invention, Figure 2 , the other end of the valve body 2 has a valve port 22. The valve 100 further includes a second valve core 4 and a valve stem 5, the second valve core 4 is arranged at one end of the valve body 2 away from the first valve core 3, one end of the valve stem 5 is connected to the first valve core 3, and the other end of the valve stem 5 passes through the valve body 2 and is connected to the second valve core 4, and the first valve core 3 drives the second valve core 4 to move in the housing 1 through the valve stem 5 to open and close the valve port 22.

[0049] For example, in Figure 2In the example, the valve body 2 is fixedly connected to the housing 1, the first valve core 3 and the second valve core 4 are respectively located at the upper and lower sides of the valve body 2, the upper end of the valve stem 5 is connected to the first valve core 3, and the lower end of the valve stem 5 passes through the valve body 2 and extends to the bottom of the valve body 2 and is connected to the second valve core 4. A coil 6 is arranged around the outer periphery of the first valve core 3. When the coil 6 is energized, an induced magnetic field is generated. The first valve core 3 located in the magnetic field moves toward the side where the valve body 2 is located under the action of the magnetic field, that is, the first valve core 3 moves downward under the action of the electromagnetic force, and the first valve core 3, the valve stem 5 and the second valve core 4 are linked. The first valve core 3 drives the valve stem 5 and the second valve core 4 to move downward synchronously, and the valve port 22 is closed after the second valve core 4 moves to match the lower end of the valve body 2. The coil 6 is energized to provide power for the opening and closing of the valve port 22. An elastic member 7 is arranged between the first valve core 3 and the valve body 2. When the first valve core 3 moves downward, the elastic member 7, such as a spring, is compressed. When the coil 6 is powered off, the electromagnetic force of the first valve core 3 disappears, and under the action of the elastic member 7, the elastic member 7 pushes the first valve core 3 to move in a direction away from the valve body 2, and at the same time drives the valve stem 5 and the second valve core 4 to move, and the second valve core 4 is separated from the lower part of the valve body 2 to open the valve port 22. When the valve port 22 is fully opened, the opening noise can be reduced by the elastic member 7. In addition, through the valve stem 5 and the second valve core 4, the movement of the first valve core 3 can drive the second valve core 4 to move to open and close the valve port 22, which is beneficial to the opening and closing of the valve 100, and further beneficial to the use of the valve 100. In addition, the valve 100 has a simple structure, is easy to use, and has high reliability.

[0050] According to some embodiments of the present invention, Figure 2 A first through hole 311 is formed on the mating portion 31, and one end of the first through hole 311 facing the valve body 2 passes through the end surface of the mating portion 31 facing the valve body 2. A second through hole 211 is formed on the bottom wall of the mating groove 21, and the second through hole 211 and the first through hole 311 are opposite to each other along the axial direction of the valve body 2. The other end of the valve stem 5 passes through the first through hole 311 and the second through hole 211 and is connected to the second valve core 4.

[0051] For example, in Figure 2In the example, the lower end of the first through hole 311 penetrates the lower end surface of the matching portion 31, and the first through hole 311 is formed in the middle of the matching portion 31 in the horizontal direction, and the second through hole 211 penetrates the upper side and lower side of the valve body 2 in the up-down direction, and the central axis of the first through hole 311, the central axis of the second through hole 211, the central axis of the first valve core 3 and the central axis of the valve body 2 coincide. The upper part of the elastic member 7 is located in the first through hole 311, the lower part of the elastic member 7 is located in the second through hole 211, and the elastic member 7 is sleeved on the outer peripheral surface of the valve stem 5. As a result, the first through hole 311 and the second through hole 211 have a guiding effect on the valve stem 5, and the valve stem 5 is not easy to deflect during the up-and-down movement, which improves the reliability of the movement of the valve stem 5, thereby improving the efficiency and accuracy of opening and closing the valve port 22. In addition, it is also conducive to the assembly of the first valve core 3, the valve body 2 and the valve stem 5, and improves the assembly efficiency of the valve 100.

[0052] According to some embodiments of the present invention, Figure 2 The valve 100 further includes a magnetic shoulder 8, a magnetic isolation tube 9 and a coil bushing 10. The magnetic isolation tube 9 is sleeved on the outer peripheral side of the first valve core 3, and the lower side of the magnetic isolation tube 9 is open. The magnetic shoulder 8 is sleeved on the outer peripheral side of the magnetic isolation tube 9 and is located on the side of the coil 6 away from the valve port 22. The coil bushing 10 is arranged between the coil 6 and the magnetic isolation tube 9. Therefore, the coil bushing 10 is conducive to the winding of the coil 6 on the outer peripheral side of the first valve core 3, and is conducive to the installation and fixation of the coil 6, so that the coil 6 is energized to generate an induced magnetic field. In addition, the arrangement of the magnetic isolation tube 9 and the magnetic shoulder 8 is conducive to the first valve core 3 being subjected to the electromagnetic force in the induced magnetic field and moving toward the valve body 2, which is conducive to the normal use of the valve 100.

[0053] The vibration reduction system (not shown) according to the second embodiment of the utility model comprises the valve 100 according to the first embodiment.

[0054] According to the vibration reduction system of the embodiment of the utility model, by adopting the above-mentioned valve 100, it is convenient to open and close the valve 100, thereby facilitating the use of the vibration reduction system and improving the performance of the vibration reduction system.

[0055] A vehicle (not shown) according to an embodiment of the third aspect of the utility model comprises a valve 100 according to an embodiment of the first aspect, or a vibration reduction system according to an embodiment of the second aspect.

[0056] According to the vehicle of the embodiment of the utility model, the use performance of the vehicle is improved and the user experience is improved by adopting the above-mentioned valve 100 or the vibration reduction system.

[0057] The valve 100 , the vibration reduction system and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In the description of the present invention, "plurality" means two or more.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve, characterized in that: include: case; A valve body, the valve body is arranged in the housing, and a matching groove is formed at one end of the valve body; A first valve core, wherein the first valve core is arranged in the shell, the first valve core is located between the one end of the valve body and the inner wall of the shell, the first valve core has a fitting portion at one end facing the valve body, the fitting portion is movably fitted in the fitting groove, and an outer peripheral surface of the fitting portion extends obliquely from the direction of the first valve core toward the valve body toward a direction close to the central axis of the first valve core, and an inclination angle of the outer peripheral surface of the fitting portion is α, wherein α satisfies: 0°<α≤60°.

2. The valve according to claim 1, characterized in that The α further satisfies: α=60°.

3. The valve according to claim 1, characterized in that The outer peripheral surface shape of the matching portion is matched with the inner wall surface shape of the matching groove.

4. The valve according to claim 1, characterized in that The longitudinal cross-section of the matching portion is trapezoidal.

5. The valve according to claim 1, characterized in that The end surface of the matching portion facing the valve body is formed into a plane, and / or The bottom wall of the fitting groove is formed into a flat surface.

6. The valve according to claim 1, characterized in that A gap is defined between an end surface of the matching portion that faces the valve body and a bottom wall of the matching groove.

7. The valve according to claim 6, characterized in that A minimum distance between an end surface of the matching portion facing the valve body and a bottom wall of the matching groove is d, wherein d satisfies: 0.5 mm ≤ d ≤ 1.7 mm.

8. The valve according to any one of claims 1 to 7, characterized in that The other end of the valve body has a valve port; The valve further comprises: a second valve core, the second valve core being arranged at an end of the valve body away from the first valve core; A valve stem, one end of which is connected to the first valve core, and the other end of which passes through the valve body and is connected to the second valve core. The first valve core drives the second valve core to move in the housing through the valve stem to open and close the valve port.

9. The valve according to claim 8, characterized in that A first through hole is formed on the matching portion, and one end of the first through hole facing the valve body passes through an end surface of the matching portion facing the valve body; A second through hole is formed on the bottom wall of the matching groove, the second through hole and the first through hole are opposite to each other along the axial direction of the valve body, and the other end of the valve stem passes through the first through hole and the second through hole and is connected to the second valve core.

10. A vibration reduction system, characterized in that: Comprising a valve according to any one of claims 1-9.

11. A vehicle, characterized in that: Comprising a valve according to any one of claims 1 to 9, or a vibration reduction system according to claim 10.

Images