Valve element assembly, electromagnetic valve, shock absorber and vehicle

Abstract

The utility model relates to a valve element assembly, an electromagnetic valve, a shock absorber and a vehicle, the valve element assembly comprises a first element body and a valve plate, in the first direction, the valve plate and the first element body are oppositely arranged, and the valve plate is arranged to be capable of moving relative to the first element body under driving of medium flowing; and the valve plate can move towards the first core body or move in the direction away from the first core body. According to the valve element assembly, the valve plate is freely arranged relative to the first element body, so that the first element body does not apply resistance to movement of the valve plate, flowing of a medium can drive the valve plate to move relative to the first element body, when the flowing state of the medium changes, after the pressure generated by the medium changes, the pressure acting on the valve plate changes, and the movement of the valve plate can be changed; the valve plate is in the free state and does not need to overcome resistance on the valve plate to move, so that the valve plate can be directly linked with the state of the medium, the response time can be shortened, and the response rate can be increased.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electromagnetic valves, in particular, to a spool assembly, an electromagnetic valve, a shock absorber and a vehicle. BACKGROUND

[0002] The valve plate of the electromagnetic valve in the related art is provided with a connecting piece, which is connected with the spool or the valve seat core and plays a supporting role. However, the existence of the connecting piece affects the movement of the valve plate, and the response speed is slow, which cannot timely adjust the throttling area. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to provide a spool assembly, an electromagnetic valve, a shock absorber and a vehicle to solve the above-mentioned problems in the related art.

[0004] In order to achieve the above-mentioned purpose, one aspect of the present disclosure provides a spool assembly, comprising:

[0005] a first core body;

[0006] a valve plate, which is arranged opposite to the first core body in a first direction, and is arranged to be movable relative to the first core body under the driving of the medium flow, so that the valve plate can move towards the first core body or move away from the first core body;

[0007] wherein the first direction is arranged as the axial direction of the first core body.

[0008] Optionally, the first direction is arranged vertically, and the valve plate is arranged to be movable relative to the first core body under the cooperation of the medium flow and gravity.

[0009] Optionally, the spool assembly further comprises a second core body and an elastic piece, the second core body is arranged opposite to the first core body in the first direction, and the two ends of the elastic piece are connected with the first core body and the second core body respectively.

[0010] Optionally, the valve plate is located between the second core body and the first core body.

[0011] wherein the spool assembly is arranged with a first state and a second state, and the spool assembly can be switched between the first state and the second state;

[0012] in the first state, the valve plate is attached to the first core body, and a first gap is arranged between the valve plate and the second core body, in the second state, the valve plate is attached to the second core body, and a second gap is arranged between the valve plate and the first core body.

[0013] Optionally, the valve disc comprises a body, the body is arranged as a ring structure, and the body is sleeved on the elastic member.

[0014] Optionally, the first core is provided with a first hole, the second core is provided with a second hole, and the first hole and the second hole are oppositely arranged in the first direction, and the elastic member is arranged in the first hole and the second hole.

[0015] Optionally, the first core and / or the second core is provided with a limiting groove, the elastic member is connected to the limiting groove, and the limiting groove limits the movement of the elastic member in the radial direction.

[0016] Optionally, the first core is arranged as a valve seat core, and the second core is arranged as a valve core.

[0017] Optionally, the valve disc is movably connected to the first core.

[0018] Optionally, the valve disc comprises a guide portion, and the first core is provided with a matching portion, and the guide portion and the matching portion are matched to limit the movement of the valve disc in the radial direction relative to the first core.

[0019] Optionally, the valve disc further comprises a body, the guide portion is connected to the body, and the body can move towards the first core or move away from the first core.

[0020] Optionally, the first core is provided with a matching portion, and the guide portion and the matching portion are matched to limit the movement of the valve disc in the radial direction relative to the first core.

[0021] Optionally, one of the guide portion and the matching portion is arranged as a guide strip extending in the first direction, and the other is arranged as a guide surface.

[0022] Optionally, the guide portion is arranged as a guide strip, the matching portion is arranged as a guide surface, and at least part of the outer side wall of the first core is arranged as the guide surface.

[0023] Optionally, the guide portion is arranged as a guide strip, and a boss is formed near one end of the first core close to the valve disc, and the outer side surface of the boss is arranged as the guide surface.

[0024] Optionally, in the first direction, there is a gap between the end surface of one end of the first core close to the valve disc and the end surface of one end of the boss close to the valve disc.

[0025] Optionally, the end surface of one end of the boss close to the valve disc is provided with a guide structure, and the guide structure is suitable for guiding the guide portion to the matching portion.

[0026] Optionally, the guide part or the matching part is arranged in multiple and is arranged at intervals around the first direction.

[0027] Optionally, the first core is provided with a first hole, and the valve sheet comprises a body arranged in a ring structure, and an inner diameter of the ring of the body is smaller than a hole diameter of the first hole.

[0028] The second aspect of the present disclosure further provides an electromagnetic valve comprising the valve core assembly.

[0029] Optionally, the electromagnetic valve comprises a valve seat provided with an adjusting accommodating cavity, and the valve core assembly is connected in the adjusting accommodating cavity.

[0030] The third aspect of the present disclosure further provides a shock absorber comprising the valve core assembly or the electromagnetic valve.

[0031] The fourth aspect of the present disclosure further provides a vehicle comprising the electromagnetic valve or the shock absorber.

[0032] The above technical solution, by arranging the valve sheet to be free relative to the first core, makes the first core not exert resistance on the movement of the valve sheet, and the flow of the medium can drive the valve sheet to move relative to the first core. When the flow state of the medium changes, the pressure generated by the medium changes, and the pressure acting on the valve sheet changes. The movement of the valve sheet can be changed, and the valve sheet is in a free state and does not need to overcome the resistance on the valve sheet to move. The valve sheet can be directly linked with the state of the medium, so as to shorten the response time and improve the response rate.

[0033] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0035] Figure 1 is a structural schematic view of a state of a valve core assembly of an embodiment of the present disclosure;

[0036] Figure 2 is a structural schematic view of another state of a valve core assembly of an embodiment of the present disclosure;

[0037] Figure 3 is a perspective structural view of a first core of an embodiment of the present disclosure;

[0038] Figure 4 is a sectional view of a first core of an embodiment of the present disclosure;

[0039] Figure 5 is a perspective view of a valve plate of one embodiment of the present disclosure;

[0040] Figure 6 is a structural schematic view of a solenoid valve of one embodiment of the present disclosure.

[0041] Explanation of Reference Signs

[0042] 1, first core, 11, first hole, 12, limiting groove, 13, matching part, 14, boss;

[0043] 2, valve plate, 21, body, 22, guide part;

[0044] 3, second core, 31, second hole;

[0045] 4, elastic member;

[0046] 5, first gap;

[0047] 6, second gap;

[0048] 100, valve seat, 102, housing, 103, coil assembly, 104, moving iron core assembly, 105, magnetic isolation ring, 106, static iron core, 107, magnetic conducting ring, 108, valve needle. DETAILED DESCRIPTION

[0049] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0050] In the present disclosure, the orientation words such as "up, down, left, right" used without the opposite description are generally defined as the direction of the drawing surface, and "inner, outer" refers to the inner and outer of the related parts. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0052] The solenoid valve can adjust the flow of the medium by controlling the current, and the adjustment response is fast, which is widely used in vehicle shock absorbers to realize the damping adjustment of the shock absorber.

[0053] The valve plate of the electromagnetic valve in the related art is provided with a connecting piece connected with the valve core or the valve seat core and serving as a support. However, the connecting piece affects the movement of the valve plate, resulting in slow response speed and failure to timely adjust the throttling area. For example, the valve plate in the electromagnetic valve is connected with the valve core or the valve seat core through a spring, the valve plate serves as a support point, and the spring supports the valve core. When the position of the valve plate needs to be adjusted, the spring needs to be deformed to move the valve plate, so that the valve plate needs more response time and cannot respond in time according to the change of the medium flow, resulting in delay of the damping adjustment.

[0054] To this end, as shown in Figures 1-5 the valve core assembly of the present disclosure includes a first core body 1 and a valve plate 2.

[0055] In the first direction, the valve plate 2 is arranged opposite to the first core body 1, and the valve plate 2 is arranged to be movable relative to the first core body 1 under the driving of the medium flow, so that the valve plate 2 can move towards the first core body 1 or move away from the first core body 1. The first direction can be arranged as the axial direction of the first core body 1.

[0056] The valve plate 2 is relatively free from the first core body 1, that is, there is no fixed connection relationship between the valve plate 2 and the first core body 1, and the two can move relative to each other, and the first core body 1 does not exert a moving resistance on the valve plate 2. The movement of the valve plate 2 relative to the first core body 1 is to move towards or away from the first core body 1 in the first direction.

[0057] The valve plate 2 moves following the flow of the medium because the flow of the medium acts on the valve plate 2, so that the valve plate 2 can move.

[0058] In the above technical solution, the freedom of the valve plate 2 relative to the first core body 1 is arranged, so that the first core body 1 does not exert a resistance on the movement of the valve plate 2, and the flow of the medium drives the valve plate 2 to move relative to the first core body 1. When the flow state of the medium changes, the pressure generated by the medium changes, the pressure acting on the valve plate 2 changes, and the movement of the valve plate 2 can be changed. The valve plate 2 is in a free state and does not need to overcome the resistance on the valve plate 2 to move, so that the valve plate 2 can be directly linked with the state of the medium, thereby shortening the response time and improving the response rate.

[0059] Optionally, in an embodiment of the present disclosure, the first direction is vertically arranged, and the valve plate 2 is arranged to be movable relative to the first core body 1 under the combined action of the medium flow and gravity. The first direction can be vertically arranged, and the valve plate 2 and the first core body 1 are arranged in an up-down manner, so that the valve plate 2 can be acted on by gravity and the pressure of the medium flow, and the two acting forces can make the valve plate 2 move up and down. No additional driving structure is needed, the throttling area can be quickly adjusted, and the response rate is improved.

[0060] Wherein, it can be understood that the electromagnetic valve has a first valve port and a second valve port, the first valve port is arranged on the valve seat, and the second valve port is arranged on the valve seat core. The medium can flow in from the first valve port or the second valve port. When the first core body 1 is below the valve disc 2, that is, the first core body 1 is the valve seat core, in the case of medium flowing in from the first valve port, the valve disc 2 moves towards the first core body 1; in the case of medium flowing in from the second valve port, the valve disc 2 moves away from the first core body 1, and when the pressure difference between the upper and lower of the valve disc 2 is balanced, it can move towards the first core body 1 under the action of gravity. When the first core body 1 is above the valve disc 2, that is, the first core body 1 is the valve core, in the case of medium flowing in from the first valve port, the valve disc 2 moves away from the first core body 1; in the case of medium flowing in from the second valve port, the valve disc 2 moves towards the first core body 1, and when the pressure difference between the upper and lower of the valve disc 2 is balanced, it can move away from the first core body 1 under the action of gravity.

[0061] Optionally, in another embodiment of the present disclosure, the first direction is horizontally arranged, and the flow direction of the medium can be switched from left to right or from right to left in the horizontal direction, so that the valve disc 2 can move left and right in the horizontal direction.

[0062] Optionally, in an embodiment of the present disclosure, the valve core assembly further comprises a second core body 3 and an elastic member 4, and in the first direction, the second core body 3 is arranged opposite to the first core body 1 with a spacing, and the two ends of the elastic member 4 are connected with the first core body 1 and the second core body 3 respectively.

[0063] Wherein, the first core body 1 and the second core body 3 are arranged with a spacing, and one of the first core body 1 and the second core body 3 can move relative to the other, so as to adjust the distance between the first core body 1 and the second core body 3, and realize the adjustment of damping force. The elastic member 4 can support the first core body 1 and the second core body 3, so that the stability of the relative movement of the first core body 1 and the second core body 3 is increased, the stroke of the movement is stably changed, the linear adjustment of the damping force is facilitated, and the elastic member 4 can also push the first core body 1 or the second core body 3 to be closely connected with the corresponding structural member, so as to ensure the assembly. It can be understood that the elastic member 4 is in a compressed state, and the elastic member 4 can always generate an acting force on the first core body 1 and the second core body 3 to move the first core body 1 and the second core body 3 away from each other. In some examples, the elastic member 4 can be a spring, of course, it can also be other elastic structures, which are not limited here.

[0064] Optionally, in an embodiment of the present disclosure, the valve disc 2 is located between the second core body 3 and the first core body 1. The valve disc 2 can move between the first core body 1 and the second core body 3, and the throttling area is different with the different positions of the valve disc 2, the first core body 1 and the second core body 3.

[0065] The valve core assembly is provided with a first state and a second state, and the valve core assembly can be switched between the first state and the second state. It can be understood that the valve plate 2 moves under the cooperation of medium flow and gravity to realize the switching between the first state and the second state.

[0066] In the first state, the valve plate 2 is attached to the first core body 1, and a first gap 5 is provided between the valve plate 2 and the second core body 3. In the second state, the valve plate 2 is attached to the second core body 3, and a second gap 6 is provided between the valve plate 2 and the first core body 1. It can be understood that in the first state, the throttling area is the space of the first gap 5, and the first gap 5 is used for the medium to flow through to realize the medium conveying. In the second state, the throttling area is the space of the second gap 6, and the second gap 6 is used for the medium to flow through to realize the medium conveying.

[0067] Optionally, the first direction is vertically arranged, and the second core body 3 is above the valve plate 2, and the first core body 1 is below the valve plate 2.

[0068] Optionally, in an embodiment of the present disclosure, the valve plate 2 comprises a body 21, the body 21 is arranged in a ring structure, and the body 21 is sleeved on the elastic member 4. The valve plate 2 is between the first core body 1 and the second core body 3, so that the elastic member 4 can pass through the valve plate 2 to be connected with the first core body 1 and the second core body 3 respectively, avoiding interference. It can be understood that the valve plate 2 is not connected with the elastic member 4, and there is no contact and force relationship between them.

[0069] Optionally, in an embodiment of the present disclosure, the first core body 1 is provided with a first hole 11, the second core body 3 is provided with a second hole 31, the axes of the first hole 11 and the second hole 31 extend along the first direction, and the first hole 11 and the second hole 31 are oppositely arranged in the first direction, and the elastic member 4 is arranged in the first hole 11 and the second hole 31. Through such arrangement, the elastic member 4 can be accommodated, and the installation of the elastic member 4 can avoid the spacing between the first core body 1 and the second core body 3 being too large. It can be understood that the first hole 11 and the second hole 31 can also be used for the medium to flow through to realize the medium conveying.

[0070] Optionally, in an embodiment of the present disclosure, the first core body 1 and / or the second core body 3 is provided with a limiting groove 12, the elastic member 4 is connected to the limiting groove 12, and the limiting groove 12 limits the movement of the elastic member 4 in the radial direction.

[0071] The elastic member 4 can be clamped into the limiting groove 12, the limiting groove 12 can limit the movement of the elastic member 4 in the radial direction, that is, perpendicular to the first direction, to ensure the stability of the connection between the elastic member 4 and the first core 1 and the second core 3, and the stability of the supporting effect. In some examples, the first core 1 is provided with the limiting groove 12, which is located in the first hole 11, and the limiting groove 12 can be an annular groove.

[0072] Optionally, in an embodiment of the present disclosure, the first core 1 is provided as a valve seat core, and the second core 3 is provided as a valve core. The valve seat core remains stationary, and the valve core is used in cooperation with the valve needle 108 to push the valve core close to the valve seat core, so that the elastic member 4 can push the valve core to tightly connect with the valve needle 108, and at the same time, the elastic member 4 can push the valve core away from the valve seat core to adjust the damping force. In some examples, the valve seat core is located below the valve core.

[0073] Optionally, in another embodiment of the present disclosure, the first core 1 can also be referred to as a valve core, and the valve plate 2 can move relative to the valve core.

[0074] Optionally, in an embodiment of the present disclosure, the valve plate 2 is movably connected to the first core 1. The valve plate 2 and the first core 1 are connected together to provide support and guiding effect, and the valve plate 2 can move relative to the first core 1 without interfering with the movement of the valve plate 2. In some examples, the first core 1 is a valve seat core.

[0075] Optionally, in an embodiment of the present disclosure, the valve plate 2 includes a guiding portion 22, and the first core 1 is provided with a cooperating portion 13, and the guiding portion 22 cooperates with the cooperating portion 13 to limit the movement of the valve plate 2 in the radial direction relative to the first core 1. By providing the cooperating portion 13 on the first core 1, the valve plate 2 can be limited in position to avoid movement in the radial direction, thereby ensuring the stability of the movement of the valve plate 2 in the first direction.

[0076] Optionally, in an embodiment of the present disclosure, the valve plate 2 includes a body 21, and the guiding portion 22 is connected to the body 21, and the body 21 can move towards the first core 1 or away from the first core 1.

[0077] The pressure of the medium can act on the body 21 to move the body 21 relative to the first core 1 to adjust the throttling area, and the cooperation of the guiding portion 22 and the cooperating portion 13 can guide and limit the movement of the body 21 to move in a set direction. In some examples, the body 21 is located between the first core 1 and the second core 3, and the guiding portion 22 mainly plays a cooperation role with the cooperating portion 13.

[0078] Optionally, in one embodiment of the present disclosure, one of the guide portion 22 and the cooperating portion 13 is provided as a guide strip extending along the first direction, and the other is provided as a guide surface. Through the contact between the guide strip and the guide surface, the guide strip and the guide surface interact to achieve the limiting effect. In some examples, the guide strip extends along the first direction.

[0079] Optionally, in another embodiment of the present disclosure, one of the guide portion 22 and the cooperating portion 13 is provided as a guide strip extending along the first direction, and the other is provided as a guide groove, and the guide strip is slidably connected in the guide groove.

[0080] Optionally, in one embodiment of the present disclosure, the guide portion 22 is provided as a guide strip, and the cooperating portion 13 is provided as a guide surface, and at least part of the outer side wall of the first core body 1 is provided as a guide surface.

[0081] Wherein the guide strip is located at the side of the body 21, and the side surface of the guide strip is attached to the guide surface, thereby generating the limiting effect.

[0082] Optionally, in one embodiment of the present disclosure, the guide portion 22 is provided as a guide strip, and the first core body 1 is formed with a boss 14 at one end close to the valve plate 2, and the outer side surface of the boss 14 is provided as a guide surface. By providing the boss 14, the guide surface is formed, which is conducive to achieving the contact fit with the guide strip, and at the same time, the boss 14 can strengthen the structural strength of the one end of the first core body 1 close to the valve plate 2.

[0083] Optionally, in one embodiment of the present disclosure, in the first direction, there is a gap between the end surface of the one end of the first core body 1 close to the valve plate 2 and the end surface of the one end of the boss 14 close to the valve plate 2. Thereby, it is beneficial to ensure that the outer diameter of the first hole 11 of the first core body 1 is a predetermined value, and to achieve a predetermined damping force adjustment range.

[0084] Optionally, the boss 14 is provided as a ring structure, and the end surface of the one end of the boss 14 close to the valve plate 2 is provided with a guide structure suitable for guiding the guide portion to the cooperating portion. When the guide portion and the cooperating portion are assembled, the guide structure can generate a guiding effect to facilitate the connection of the valve plate 2 and the first core body 1. In some examples, the guide structure can be a bevel.

[0085] Optionally, in one embodiment of the present disclosure, the guide portion 22 or the cooperating portion 13 is provided as a plurality of and is arranged at intervals around the first direction. By such an arrangement, the limiting effect in the radial direction can be better achieved, and the movement of the valve plate 2 relative to the first core body 1 in the radial direction can be avoided.

[0086] Optionally, in another embodiment of the present disclosure, the guide portion 22 or the cooperating portion 13 can be a ring structure.

[0087] Optionally, in one embodiment of the present disclosure, the first core 1 is provided with a first hole 11, and the valve piece 2 comprises a body 21, the body 21 is arranged in a ring structure, and the inner diameter of the ring of the body 21 is smaller than the hole diameter of the first hole 11. By such an arrangement, the body 21 is beneficial to be subjected to the pressure of the medium, and the movement of the body 21 can be facilitated, while the flow of the medium is not affected.

[0088] As shown in Figure 6 the second aspect of the present disclosure further provides an electromagnetic valve comprising the valve core assembly.

[0089] Optionally, in one embodiment of the present disclosure, the electromagnetic valve comprises a valve seat 100, the valve seat 100 is provided with an adjusting accommodating cavity, and the valve core assembly is connected in the adjusting accommodating cavity.

[0090] Optionally, the electromagnetic valve further comprises a shell 102, a coil assembly 103, a moving iron core assembly 104, a magnetic isolation ring 105, a static iron core 106, a magnetic conducting ring 107, and a valve needle 108. The valve needle 108 is connected with the valve core, and the valve needle 108 is movable in a first direction. The static iron core 106, the magnetic isolation ring 105, and the valve seat 100 combine to form a driving accommodating cavity, and the moving iron core assembly 104 is arranged in the driving accommodating cavity. The valve needle 108, the valve core, and the valve piece 2 are arranged in the adjusting accommodating cavity.

[0091] When energized, the coil assembly 103 generates a magnetic field to drive the moving iron core assembly 104 to move towards the valve seat 100, and the valve core is driven by the valve needle 108 to move towards the valve seat core, so as to change the distance between the valve core, the valve piece 2, and the valve seat core, thereby achieving the effect of adjusting the damping force. When the current changes, the distance between the valve core, the valve piece 2, and the valve seat core also changes.

[0092] The third aspect of the present disclosure further provides a shock absorber comprising the valve core assembly or the electromagnetic valve.

[0093] The fourth aspect of the present disclosure further provides a vehicle comprising the electromagnetic valve or the shock absorber.

[0094] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0095] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not describe various possible combinations again.

[0096] Furthermore, the various embodiments of the present disclosure can be arbitrarily combined with each other unless they contradict each other, and it should be understood that the same should be construed as being included in the disclosure of the present disclosure.

Claims

1. A valve trim assembly characterized by, The valve core assembly comprises: a first core body; a valve disc, which is arranged opposite to the first core body in a first direction, and is arranged to be movable relative to the first core body under the driving of a medium flow, so that the valve disc is movable towards or away from the first core body; wherein the first direction is arranged as the axial direction of the first core body.

2. The valve trim assembly of claim 1, wherein, The first direction is arranged vertically, and the valve disc is arranged to be movable relative to the first core body under the cooperation of the medium flow and gravity.

3. The valve trim assembly of claim 1, wherein, The valve core assembly further comprises a second core body and an elastic member, which are arranged opposite to each other in the first direction, and the two ends of the elastic member are connected to the first core body and the second core body respectively.

4. The valve trim assembly of claim 3, wherein, The valve disc is located between the second core body and the first core body. The valve core assembly is arranged in a first state and a second state, and is switchable between the first state and the second state. In the first state, the valve disc is attached to the first core body, and a first gap is arranged between the valve disc and the second core body; in the second state, the valve disc is attached to the second core body, and a second gap is arranged between the valve disc and the first core body.

5. The valve trim assembly of claim 4, wherein, The valve disc comprises a body, which is arranged in a ring structure, and the body is sleeved on the elastic member.

6. The valve trim assembly of claim 3, wherein, The first core body is provided with a first hole, and the second core body is provided with a second hole, which are arranged opposite to each other in the first direction, and the elastic member is arranged in the first hole and the second hole.

7. The valve trim assembly of claim 3, wherein, The first core body and / or the second core body is provided with a limiting groove, and the elastic member is connected to the limiting groove, and the limiting groove limits the movement of the elastic member in the radial direction.

8. The valve trim assembly of claim 3, wherein, The first core body is arranged as a valve seat core, and the second core body is arranged as a valve core.

9. The valve trim assembly of any one of claims 1-8, wherein, The valve disc is movably connected to the first core body.

10. The valve trim assembly of claim 9, wherein, The valve disc comprises a guide portion, and the first core body is provided with a matching portion, and the guide portion and the matching portion are matched to limit the movement of the valve disc in the radial direction relative to the first core body.

11. The valve trim assembly of claim 10, wherein, The valve disc further comprises a body, and the guide portion is connected to the body, and the body is movable towards or away from the first core body.

12. The valve trim assembly of claim 10, wherein, One of the guide portion and the matching portion is arranged as a guide strip extending along the first direction, and the other is arranged as a guide surface.

13. The valve trim assembly of claim 12, wherein, The guide portion is arranged as a guide strip, the matching portion is arranged as a guide surface, and at least part of the outer side wall of the first core body is arranged as the guide surface.

14. The valve trim assembly of claim 12, wherein, The guide portion is arranged as a guide strip, and a boss is formed on one end of the first core body close to the valve disc, and the outer side surface of the boss is arranged as the guide surface.

15. The valve trim assembly of claim 14, wherein, In the first direction, there is a gap between the end surface of one end of the first core body close to the valve disc and the end surface of one end of the boss close to the valve disc.

16. The valve trim assembly of claim 14, wherein, The end surface of one end of the boss close to the valve disc is provided with a guide structure, which is suitable for guiding the guide portion to the matching portion.

17. The valve trim assembly of claim 10, wherein, The guide portion or the matching portion is arranged as a plurality of guide portions or matching portions and is arranged opposite to each other in the first direction.

18. The valve trim assembly of claim 1, wherein, The first spool is provided with a first hole, and the valve disc includes a body provided as a ring structure, an inner diameter of the ring of the body being smaller than a hole diameter of the first hole.

19. An electromagnetic valve characterized by comprising: A valve core assembly as claimed in any one of claims 1 to 18.

20. The solenoid valve according to claim 19, wherein The electromagnetic valve includes a valve seat provided with an adjusting accommodation cavity, and the valve core assembly is connected in the adjusting accommodation cavity.

21. A shock absorber characterized by, A valve core assembly as claimed in any one of claims 1 to 18, or an electromagnetic valve as claimed in claim 19 or 20.

22. A vehicle characterized by An electromagnetic valve as claimed in claim 19 or 20, or a shock absorber as claimed in claim 21.

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