Proportional control valve for automobile damping

Abstract

The proportional control valve comprises a valve seat, a valve sleeve is connected to the top end of the valve seat in a sleeved mode, a housing is connected to the bottom end of the valve seat in a sleeved mode, a movable cavity is formed in the valve seat, a push rod is connected into the movable cavity in a sliding mode, and a reset cavity is formed in the end, close to the housing, in the valve seat. And the reset cavity communicates with the movable cavity, an elastic assembly is arranged in the reset cavity, and the elastic assembly is connected with the surface of the outer wall of the push rod. In combination with the structural design of the proportional control valve, the elastic component is arranged to replace the traditional spring design, and the push rod can recover to the initial state of the push rod after being subjected to the downward pressure of the valve core under the high-strength working condition, so that the service life of the proportional control valve is prolonged, and the use cost of a user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a proportional control valve for vehicle shock absorption. Background Technique

[0002] The full name of CDC is Continuous Damping Control, which means a continuous shock absorption control system, also called a shock absorption stability system. This set of systems can adjust the strength of the suspension damping in real time according to the driving state of the vehicle body. After having the CDC system, when driving on urban roads at medium and low speeds, the system can reduce the strength of the suspension damping according to the road conditions, so as to effectively absorb the vibrations from the road surface and ensure the smooth and stable driving of the vehicle. Among them, the shock absorber is based on the structure of a traditional hydraulic shock absorber. The shock absorber is filled with oil, and there are two inner and outer chambers. The oil can flow through the pores connecting the two chambers. When the wheel bumps, the piston in the shock absorber will move up and down in the sleeve, and the oil in its chamber will flow back and forth between the two chambers under the action of the reciprocating motion of the piston. The mutual friction between the oil molecules and the friction between the oil and the pore wall form resistance to the movement of the piston, converting the kinetic energy of the vibration into heat, and the heat is dissipated into the air through the shock absorber housing, thus realizing the "shock absorption" process of the shock absorber. The CDC system makes an article on the "pores" and changes the cross-sectional area of the connected part between the two chambers through an electronically controlled valve. When the flow rate is constant, the size of the cross-sectional area is inversely proportional to the resistance of the fluid, so the resistance of the oil flowing back and forth between the chambers is changed, thereby realizing the change of the shock absorber damping.

[0003] However, in the existing proportional control valves on the market, the push rod inside is restored to its position after being pressed by the valve core through the elasticity of the spring between the push rod and the chamber. With the design of the spring, after long-term high-intensity use, the elasticity of the spring will be reduced, thus shortening the service life of the proportional control valve and increasing the use cost of the user. Summary of the Invention

[0004] The purpose of the utility model is to provide a proportional control valve for vehicle shock absorption to solve the problem that a sealing ring is arranged between the inner wall of the reset chamber and the elastic component mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A proportional control valve for vehicle shock absorption, including a valve seat, a valve sleeve is sleeved at the top end of the valve seat, a cover shell is sleeved at the bottom end of the valve seat, an activity chamber is opened in the valve seat, a push rod is slidably connected in the activity chamber, a reset chamber is opened at one end of the valve seat close to the cover shell, and the reset chamber is communicated with the activity chamber. An elastic component is arranged in the reset chamber and is connected to the outer wall surface of the push rod.

[0006] Preferably, the elastic component is composed of a first elastic sheet and a second elastic sheet. The first elastic sheet and the second elastic sheet are coaxially designed, and the first elastic sheet and the second elastic sheet are fixedly connected at one end away from the push rod.

[0007] Preferably, the surface of the push rod is respectively provided with a first clamping groove and a second clamping groove, and the first elastic sheet and the second elastic sheet are respectively clamped in the first clamping groove and the second clamping groove.

[0008] Preferably, the first elastic sheet includes a first connecting ring, a second connecting ring and a first connecting elastic sheet. A plurality of first connecting elastic sheets are fixedly connected between the first connecting ring and the second connecting ring at equal intervals, and the first connecting ring is in contact with the surface of the first clamping groove.

[0009] Preferably, the first elastic sheet and the second elastic sheet have the same structure.

[0010] Preferably, a sealing ring is arranged between the inner wall of the reset cavity and the elastic component.

[0011] Beneficial effects

[0012] Compared with the existing technology, the beneficial effects of the present utility model are as follows:

[0013] Combined with the structural design of the present utility model, by setting the elastic component, the traditional spring design is replaced, and after the push rod is subjected to the downward pressure of the valve core under high-intensity working conditions, it can return to the initial state of the push rod, thereby improving the service life of the proportional control valve and reducing the use cost of the user. Description of the drawings

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the internal structural schematic diagram of the present utility model;

[0016] Figure 3 is the structural schematic diagram of the elastic component of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the first elastic sheet of the present utility model;

[0018] Figure 5 is the structural schematic diagram of the cooperation between the spring component and the push rod of the present utility model.

[0019] 1. Valve seat; 2. Valve sleeve; 3. Cover shell; 4. Push rod; 5. Reset cavity; 6. Elastic component; 7. Sealing ring;

[0020] 11. Moving cavity; 41. First clamping groove; 42. Second clamping groove; 61. First elastic sheet;

[0021] 62. Second elastic sheet; 611. First connecting ring; 612. Second connecting ring; 613. First connecting elastic sheet. Detailed implementation mode

[0022] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] As Figures 1-5 It is a structural schematic diagram of a proportional control valve for vehicle shock absorption in a preferred implementation mode of the present utility model. In this embodiment, a proportional control valve for vehicle shock absorption includes a valve seat 1, a valve sleeve 2 is sleeved at the top end of the valve seat 1, a cover shell 3 is sleeved at the bottom end of the valve seat 1. At the same time, a moving cavity 11 is opened in the valve seat 1, a push rod 4 is slidably connected through the moving cavity 11, and a reset cavity 5 is opened at one end of the valve seat 1 close to the cover shell 3, and the reset cavity 5 communicates with the moving cavity 11. An elastic component 6 is arranged in the reset cavity 5, and the elastic component 6 is connected to the outer wall surface of the push rod 4; by arranging the elastic component 6, the traditional spring design is replaced, and the push rod 4 can be restored to its initial state after being subjected to the downward pressure of the valve core under high-intensity working conditions, thereby improving the service life of the proportional control valve and reducing the use cost of the user.

[0025] In this embodiment, the elastic component 6 is composed of a first elastic sheet 61 and a second elastic sheet 62, and the first elastic sheet 61 and the second elastic sheet 62 are coaxially designed, and the ends of the first elastic sheet 61 and the second elastic sheet 62 away from the push rod 4 are fixedly connected. This design can enhance the elasticity, disperse the pressure when the push rod 4 slides downward, and effectively prevent the possibility of elastic failure in the elastic component 6 due to stress concentration.

[0026] In this embodiment, first clamping grooves 41 and second clamping grooves 42 are respectively formed on the surface of the push rod 4, and a first elastic sheet 61 and a second elastic sheet 62 are respectively clamped in the first clamping groove 41 and the second clamping groove 42. With this structural design, when the push rod 4 is subjected to a downward pressure, the push rod can be restored to its initial state through the first elastic sheet 61 and the second elastic sheet 62.

[0027] In this embodiment, the first elastic sheet 61 includes a first connection ring 611, a second connection ring 612 and a first connection elastic sheet 613. A plurality of first connection elastic sheets 613 are fixedly connected between the first connection ring 611 and the second connection ring 612. Through the cooperation of the plurality of first connection elastic sheets 613, the first connection ring 611 is in contact with the surface of the first clamping groove 41.

[0028] In this embodiment, the first elastic sheet 61 and the second elastic sheet 62 have the same structure. With this structural design, it is further ensured that the first elastic sheet 61 and the second elastic sheet 62 have the same elasticity.

[0029] In this embodiment, a sealing ring 7 is provided between the inner wall of the reset cavity 5 and the elastic component 6 to increase the sealing performance therebetween.

[0030] The above content further elaborates on the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as falling within the protection scope determined by the claims submitted for the present utility model.

Claims

1. A proportional control valve for automobile shock absorption, comprising a valve seat (1), a valve sleeve (2) being sleeved on the top end of the valve seat (1), and a cover (3) being sleeved on the bottom end of the valve seat (1), characterized in that: The valve seat (1) is provided with an active cavity (11), and a push rod (4) is slidably connected to the active cavity (11). The valve seat (1) is provided with a reset cavity (5) at one end close to the cover shell (3), and the reset cavity (5) is communicated with the active cavity (11). An elastic component (6) is provided in the reset cavity (5), and the elastic component (6) is connected to the outer wall surface of the push rod (4).

2. A proportional control valve for automobile shock absorption according to claim 1, characterized in that: The elastic component (6) is composed of a first elastic sheet (61) and a second elastic sheet (62); the first elastic sheet (61) and the second elastic sheet (62) are coaxially designed, and the first elastic sheet (61) and the second elastic sheet (62) are fixedly connected at one end away from the push rod (4).

3. The proportional control valve for automobile shock absorption according to claim 1, characterized in that: The push rod (4) is provided with a first clamping groove (41) and a second clamping groove (42) on its surface, and the first clamping groove (41) and the second clamping groove (42) are clamped with a first elastic sheet (61) and a second elastic sheet (62) respectively.

4. The proportional control valve for automobile shock absorption according to claim 2, characterized in that: The first elastic sheet (61) comprises a first connecting ring (611), a second connecting ring (612) and a first connecting elastic sheet (613); a plurality of first connecting elastic sheets (613) are fixedly connected between the first connecting ring (611) and the second connecting ring (612); and the first connecting ring (611) is in contact with the surface of the first clamping groove (41).

5. The proportional control valve for automobile shock absorption according to claim 3, characterized in that: The first elastic sheet (61) and the second elastic sheet (62) have the same structure.

6. The proportional control valve for automobile shock absorption according to claim 1, characterized in that: A sealing ring (7) is provided between the inner wall of the resetting cavity (5) and the elastic component (6).

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