Damping adjusting device of shock absorber

Abstract

The utility model discloses a damping adjusting device of a shock absorber, and relates to the technical field of shock absorbers. A first port is formed in one end of the valve shell, and a second port is formed in the side wall of the valve shell; the action part is arranged in the valve shell; the acting force of the first elastic element is between the valve shell and the action part; the main valve is arranged in the valve shell and is in transmission connection with the action part; the damping control element is located in the valve shell, is in transmission connection with the main valve and can adjust the medium circulation amount between the first port and the second port through axial movement of the damping control element; the end cover is located at the end, provided with the first port, of the valve shell and faces the damping control element. The elastic abutting assembly is located between the damping control element and the end cover and can eject the damping control element away from the end cover; and in a free state without electrification and medium pressure, a channel through which a fluid medium flows exists between the end cover and the damping control element. The utility model has the characteristics of initial opening and low energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber technical field, concretely relates to a shock absorber's damping adjusting device. BACKGROUND

[0002] The shock absorber is installed between the frame and the axle, and is mainly used for inhibiting the oscillation when the spring rebounds after absorbing the shock and the impact from the road surface, so that the vehicle can quickly return to the normal driving state, and the shock absorber plays the effect of shock resistance and vibration reduction. The shock absorber is matched with a damping valve, and when the vehicle is impacted by different road conditions and speeds, more than 90% of the energy is reduced by the shock absorber when the vibration is transmitted through the wheels, and the shock absorber is a key component for shock resistance and vibration reduction in the vehicle suspension system. In order to improve the performance of the vehicle, the damping control valve with adjustable damping is mostly used. However, the existing damping control valve is sealed and contacted on the end cover between the execution elements for adjusting the damping before the adjustment starts, the initial damping is large, and the overall power consumption of the damping control valve is large. SUMMARY

[0003] In view of the technical problem of the large initial damping of the existing shock absorber damping control valve, the utility model provides a shock absorber damping adjusting device, which has an initial opening, small initial damping force, and can realize proportional control of the damping force and the current, so as to adjust in real time according to the road conditions of the vehicle, effectively reduce the energy consumption of the damping adjusting device, and has the characteristics of low energy consumption.

[0004] The utility model realizes the following technical schemes:

[0005] The utility model provides a shock absorber damping adjusting device, which comprises:

[0006] The end cover is located on one side of the valve shell;

[0007] The damping control element is arranged in the valve shell and can move;

[0008] The elastic pressing assembly comprises an end pin, and the end pin can move relative to the end cover;

[0009] The elastic pressing assembly is located between the damping control element and the end cover, and can separate the damping control element from the end cover;

[0010] So that at least in the static state of the shock absorber damping adjusting device, the damping control element and the end cover release the fluid medium flow channel

[0011] That is, the damper damping adjustment device provided by the embodiment comprises: a valve housing, one end of which is provided with a first port, the end wall of the valve housing provided with the first port is provided with a second port, and the first port and the second port are in communication; a moving component arranged in the valve housing and capable of moving axially along the valve housing under the drive of a driving element; a first elastic element, the force of which is between the valve housing and the moving component; a main valve arranged in the valve housing and in transmission connection with the moving component; a damping control element arranged in the valve housing, in transmission connection with the main valve, and capable of adjusting the medium flow between the first port and the second port through axial movement; an end cover arranged at one end of the valve housing provided with the first port and facing the damping control element; and an elastic pressing assembly arranged between the damping control element and the end cover and capable of pushing the damping control element away from the end cover, wherein, in a free state without power and medium pressure, a fluid medium flow channel exists between the end cover and the damping control element.

[0012] The damper damping adjustment device provided by the embodiment comprises: a valve housing, one end of which is provided with a first port, the end wall of the valve housing provided with the first port is provided with a second port, and the first port and the second port are in communication; a moving component arranged in the valve housing and capable of moving axially along the valve housing under the drive of a driving element; a first elastic element, the force of which is between the valve housing and the moving component; a main valve arranged in the valve housing and in transmission connection with the moving component; a damping control element arranged in the valve housing, in transmission connection with the main valve, and capable of adjusting the medium flow between the first port and the second port through axial movement; an end cover arranged at one end of the valve housing provided with the first port and facing the damping control element; and an elastic pressing assembly arranged between the damping control element and the end cover and capable of pushing the damping control element away from the end cover, wherein, in a free state without power and medium pressure, a fluid medium flow channel exists between the end cover and the damping control element.

[0013] Meanwhile, the first elastic element has a force between the valve housing and the moving component, the moving component is in transmission connection with the main valve, and the damping control element is in transmission connection with the main valve, so that, when the damping needs to be adjusted, the driving element changes the pressure of the moving component acting on the damping control element, the elastic pressing assembly is compressed, the damping control element moves axially, the medium flow between the first port and the second port is adjusted, the medium flow of the damping control valve is adjusted, the damping of the medium flow is changed, the damping is provided according to actual needs, and the overall power consumption is reduced. The driving force of the driving element is determined according to the current input into the driving element and is in a proportional relationship with the current, so that the damping force and the current are in proportional control.

[0014] Therefore, the damper damping adjustment device provided by the embodiment has an initial opening, an initial damping force is small, and the damping force and the current are in proportional control, so that the damping is adjusted in real time according to the road conditions of the vehicle, the energy consumption of the damper damping adjustment device is effectively reduced, and the damper damping adjustment device has the characteristics of low energy consumption.

[0015] The first elastic element and the elastic effect of the elastic pressing assembly can be set to be different, so that diversified damping force performance combinations can be realized by adjusting different specifications, and various damping adjustment requirements can be met.

[0016] In an optional embodiment of the present application, the elastic pressing assembly further comprises: a spring cover fixedly connected with the end cover and located on the side of the end cover away from the damping control element; and a second elastic element, the force of which is between the spring cover and the end pin, so as to ensure that the elastic pressing assembly can support the damping control element, so that in the free state, there is a channel for the flow of fluid medium between the end cover and the damping control element. At the same time, the force of the second elastic element is between the spring cover and the end pin, so that the second elastic element is protected by the spring cover in the working state, so that the risk of the second elastic element being pulled out is effectively solved, and the working posture of the second elastic element is stable, ensuring the consistency of product performance.

[0017] In an optional embodiment of the present application, the valve housing comprises a first housing and a second housing connected; the action component is arranged in the first housing, the main valve and the damping control element are arranged in the second housing, and the end cover is mounted at the end of the second housing away from the first housing, so as to facilitate the installation of the action element and the first elastic element.

[0018] In an optional embodiment of the present application, the force of the first elastic element is between the second housing and the action component, so that the force of the second elastic element is reduced by the pressing action of the first elastic element, so that the damping control element and the end cover have an initial opening in the free state without power supply and work.

[0019] In an optional embodiment of the present application, the end pin is inserted into the damping control element at the end opposite to the damping control element, so as to limit the radial movement of the damping control element by the end pin, so as to avoid the radial deviation of the damping control element affecting the linearity of the damping adjustment.

[0020] In an optional embodiment of the present application, the second housing can limit the radial movement of the damping control element. By limiting the radial movement of the damping control element by the second housing, the concentricity requirement of the damping control element, the end cover and the end pin is reduced, thereby reducing the processing difficulty and assembly difficulty of the parts and the production and manufacturing cost of the damping adjustment device.

[0021] In an optional embodiment of the present application, the first elastic element is arranged between the first housing and the action component, so that the damping adjustment device has an initial opening between the damping control element and the end cover in a free state without power supply and work, by the combined force of the second elastic element and the first elastic element.

[0022] In an optional embodiment of the present application, the elastic effects of the first elastic element and the second elastic element are different, so that the elastic effects of the first elastic element and the elastic pressing assembly are set to be different, to realize diversified damping force performance combination by adjusting different specifications, and to meet various damping adjustment requirements.

[0023] In an optional embodiment of the present application, the driving element is sleeved outside the first housing, so as to facilitate the installation of the driving element.

[0024] In an optional embodiment of the present application, the piston rod is further included, and the valve housing is arranged in the piston rod, so as to facilitate the installation of the damping adjustment assembly in the automobile shock absorber, and to facilitate the adjustment of the damping of the automobile shock absorber.

[0025] Compared with the prior art, the damping adjustment device of the shock absorber has the following advantages and beneficial effects:

[0026] 1. The damping adjustment device of the shock absorber provided by the present application comprises a valve housing, an action component, a first elastic element, a main valve, a damping control element, an end cover and an elastic pressing assembly, the action component, the first elastic element, the main valve and the damping control element are arranged in the valve housing, one end of the valve housing is provided with a first port, a side wall is provided with a second port, and the elastic pressing assembly is arranged between the end cover and the damping control element, so as to simultaneously press the end cover and the damping control element through the elastic pressing assembly, so that the damping control valve has a fluid medium flow channel between the end cover and the damping control element in a free state without power supply and medium pressure, that is, the damping control valve has an initial opening in a static state, the initial damping force is small, and the energy consumption of the damping adjustment device can be effectively reduced.

[0027] 2. The damping adjusting device of the shock absorber, the first elastic element acting force is between the valve shell and the action component, the action component is in transmission connection with the main valve, the damping control element is in transmission connection with the main valve, thereby, when the damping needs to be adjusted, the pressure of the action component acting on the damping control element is changed through the driving element, the elastic pressing assembly can be compressed, the damping control element is axially moved, the medium flow between the first port and the second port is adjusted, the medium flow of the damping control valve is adjusted, and then the damping of the medium flow is changed, the damping is provided according to actual needs, and the overall power consumption is reduced, the driving force of the driving element is determined according to the current input therein, and is in a proportional relationship, the damping force and the current are in proportional control, and the vehicle road condition is adjusted in real time, and the device has the characteristics of low energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope, and for ordinary skilled in the art, other related drawings can also be obtained without creative labor.

[0029] In the drawings:

[0030] Figure 1 The structure schematic view of the first embodiment of the damping adjusting device of the shock absorber of the present application embodiment;

[0031] Figure 2 The structure schematic view of the second embodiment of the damping adjusting device of the shock absorber of the present application embodiment;

[0032] Figure 3 The structure schematic view of the third embodiment of the damping adjusting device of the shock absorber of the present application embodiment.

[0033] Markings in the drawings and corresponding component names:

[0034] 1-piston rod, A-first port, B-second port, 2-driving element, 3-valve shell, 301-first shell, 302-second shell, 4-action component, 5-first elastic element, 6-main valve, 7-damping control element, 8-end cover, 9-end pin, 10-second elastic element, 11-spring cover. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] In the description of the embodiments of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "opened", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Embodiment 1

[0039] In combination Figure 1 The damping adjusting device of the shock absorber comprises: an end cover 8 located on one side of a valve shell 3; a damping control element 7 arranged in the valve shell 3 and movable; an elastic pressing assembly comprising an end pin 9, the end pin 9 being movable relative to the end cover 8; the elastic pressing assembly being located between the damping control element 7 and the end cover 8 and being capable of pushing the damping control element 7 away from the end cover 8; so that at least in the static state of the damping adjusting device of the shock absorber (in the free state without power supply and medium pressure), a fluid medium flow passage is released between the damping control element 7 and the end cover 8.

[0040] That is, the embodiment provides a damping adjustment device of a shock absorber, comprising: a valve housing 3, one end of which is provided with a first port A, the end side wall provided with the first port A is provided with a second port B, and the first port A is in communication with the second port B; an action component 4 arranged in the valve housing 3 and capable of moving axially along the valve housing 3 under the driving of a driving element 2; a first elastic element 5, the force of which is between the valve housing 3 and the action component 4; a main valve 6 arranged in the valve housing 3 and in transmission connection with the action component 4; a damping control element 7 located in the valve housing 3, in transmission connection with the main valve 6, and capable of adjusting the medium flow between the first port A and the second port B through the axial movement of the damping control element 7 itself; an end cover 8 located at one end of the valve housing 3 provided with the first port A and facing the damping control element 7; and an elastic pressing assembly located between the damping control element 7 and the end cover 8 and capable of pushing the damping control element 7 away from the end cover 8; wherein, in a free state without power and medium pressure, there is a fluid medium flow channel between the end cover 8 and the damping control element 7.

[0041] Specifically, the valve housing 3 comprises a first housing 301 and a second housing 302 connected together; the action component 4 is arranged in the first housing 301, the main valve 6 and the damping control element 7 are arranged in the second housing 302, and the end cover 8 is installed at the end of the second housing 302 away from the first housing 301, so as to facilitate the installation of the action component and the first elastic element 5.

[0042] In the embodiment, the elastic pressing assembly comprises: an end pin 9 arranged in the valve housing 3 and capable of moving axially along the valve housing 3 relative to the end cover 8; a spring cover 11 fixedly connected with the end cover 8 and located on the side of the end cover 8 away from the damping control element 7; and a second elastic element 10, the force of which is between the spring cover 11 and the end pin 9, so as to ensure that the elastic pressing assembly can support the damping control element 7, so that in the free state, there is a fluid medium flow channel between the end cover 8 and the damping control element 7.

[0043] Meanwhile, the second elastic element 10 has a force between the spring cover 11 and the end pin 9, so as to provide protection for the second elastic element 10 through the spring cover 11, so that the second elastic element 10 is not affected by hydraulic impact in the working state, thereby effectively solving the risk of the second elastic element 10 being pulled out, and at the same time, the working posture of the second elastic element 10 is stable, and the consistency of product performance is ensured.

[0044] It can be understood that the second elastic element 10 acts between the spring cover 11 and the end pin 9, which indicates that the second elastic element 10 is located between the spring cover 11 and the damping control element 7. While the damping control element 7 is under the action of the hydraulic and main valve 6, it can maintain the original structure and not be deformed, that is, the damping control element 7 has sufficient rigidity to ensure that when the damping control element 7 moves, it can play a role in adjusting the effective flow area between the first port A and the second port B, thereby adjusting the flow of the medium.

[0045] The first elastic element 5 acts between the second housing 302 and the action component 4. That is, the first elastic element 5 is installed between the end of the second housing 302 opposite the first housing 301 and the action component to reduce the action of the second elastic element 10 through the pressing action of the first elastic element 5 (the action component does not generate force on the damping control element 7 in the free state), so that the damping adjustment device has an initial opening between the damping control element 7 and the end cover 8 in the free state without power supply and work. And the first elastic element 5 provides a reset spring force to the action assembly.

[0046] On this basis, the end pin 9 is inserted into the damping control element 7 opposite one end of the damping control element 7, so as to limit the radial movement of the damping control element 7 through the end pin 9, so as to avoid the radial offset of the damping control element 7 and affect the linearity of the damping adjustment.

[0047] It should be noted that the elastic effects of the first elastic element 5 and the second elastic element 10 are different (elastic coefficient / reset effect), so that the elastic effects of the first elastic element 5 and the elastic pressing assembly are set to be different, so as to realize diversified damping force performance combinations by adjusting different specifications and proportions, and meet various damping adjustment needs.

[0048] It can be understood that the embodiment also includes a driving element 2 (electromagnetic coil), which is sleeved outside the first housing 301 to facilitate the installation of the driving element 2.

[0049] In addition, the embodiment also includes a piston rod 1, and the valve housing 3 is installed in the piston rod 1, so as to facilitate the installation of the damping adjustment assembly in the automobile shock absorber, so as to facilitate the adjustment of the damping of the automobile shock absorber.

[0050] In summary, the damper damping adjustment device provided by the embodiment comprises a valve housing 3, an action component 4, a first elastic element 5, a main valve 6, a damping control element 7, an end cover 8 and an elastic pressing assembly. The action component 4, the first elastic element 5, the main valve 6 and the damping control element 7 are arranged in the valve housing 3. The valve housing 3 is provided with a first port A at one end and a second port B at a side wall. The elastic pressing assembly is arranged between the end cover 8 and the damping control element 7. The elastic pressing assembly simultaneously presses the end cover 8 and the damping control element 7, so that the damping control valve is in a free state without power and medium pressure. There is a fluid medium flow channel between the end cover 8 and the damping control element 7, that is, the damping control valve has an initial opening in the static state, and the initial damping force is small.

[0051] Meanwhile, the first elastic element 5 acts on the valve housing 3 and the action component 4. The action component 4 is in transmission connection with the main valve 6. The damping control element 7 is in transmission connection with the main valve 6. Therefore, when the damping needs to be adjusted, the driving element 2 changes the pressure of the action component 4 acting on the damping control element 7, so as to compress the elastic pressing assembly, move the damping control element 7 in the axial direction, adjust the medium flow between the first port A and the second port B, adjust the medium flow of the damping control valve, change the damping of the medium flow, provide the damping according to the actual demand, and then reduce the overall power consumption. The driving force of the driving element 2 is determined according to the current input therein and is in a proportional relationship, so as to realize proportional control of the damping force and the current.

[0052] In summary, the damper damping adjustment device provided by the embodiment has an initial opening, an initial damping force is small, and proportional control of the damping force and the current can be realized to adjust in real time according to the vehicle road conditions, effectively reduce the energy consumption of the damper damping adjustment device, and has the characteristics of low energy consumption.

[0053] In addition, the elastic effects of the first elastic element 5 and the elastic pressing assembly can be set to be different, so as to realize diversified damping force performance combinations by adjusting different specifications and proportions, and meet various damping adjustment requirements.

[0054] Embodiment 2

[0055] In combination Figure 2The embodiment provides a damping adjusting device of a shock absorber, and based on the embodiment 1, the first elastic element 5 is arranged between the first shell 301 and the action component 4. That is, the first elastic element 5 is arranged between the end of the action component away from the second shell 302 and the first shell 301, so that the damping adjusting device has an initial opening between the damping control element 7 and the end cover 8 in a free state without power supply and work, by the combined force of the second elastic element 10 and the first elastic element 5 (the action of the action component on the damping control element 7 to compress the second elastic element 10 in the free state, and the action of the second spring element on the damping control element and the action component to provide a reset elastic force).

[0056] Embodiment 3

[0057] In combination Figure 3 The embodiment provides a damping adjusting device of a shock absorber, and based on the embodiment 1, the second shell 302 can limit the radial movement of the damping control element 7. That is, the second shell 302 is arranged to match the inner diameter of the damping control element 7 and the outer diameter of the damping control element 7, and the end of the end pin 9 is only pressed against the end surface of the damping control element 7, so that the radial movement of the damping control element 7 is limited by the second shell 302, the concentricity requirement of the damping control element 7, the end cover 8 and the end pin 9 is reduced, the machining difficulty and assembly difficulty of the parts are reduced, and the production cost of the damping adjusting device is reduced.

[0058] It can be known that the damping adjusting devices provided in the above embodiments 1-3 are not limited to be used in automobile shock absorbers, and can also be used in other components or fluid control systems which need to use a damping size adjusting component.

[0059] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only a specific embodiment of the utility model, and is not used to limit the protection scope of the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A damping adjustment device for a shock absorber, characterized by The application relates to a damping control device for a shock absorber, comprising: an end cover (8) arranged on one side of a valve housing (3); a damping control element (7) arranged in the valve housing (3) and movable; an elastic pressing assembly comprising an end pin (9) capable of moving relative to the end cover (8); the elastic pressing assembly is arranged between the damping control element (7) and the end cover (8) and can push the damping control element (7) away from the end cover (8); so that at least in the static state of the damping adjustment device of the shock absorber, a fluid medium flow channel is released between the damping control element (7) and the end cover (8).

2. The damping adjuster of the shock absorber according to claim 1, characterized by, Further comprising: an action component (4) arranged in the valve housing (3) and capable of moving axially along the valve housing (3) under the drive of a driving element (2); a first elastic element (5) acting between the valve housing (3) and the action component (4); a main valve (6) arranged in the valve housing (3) and in transmission connection with the action component (4).

3. The damping adjustment device of a shock absorber according to claim 2, characterized in that, The elastic pressing assembly further comprises: a spring cover (11) fixedly connected with the end cover (8) and arranged on the side of the end cover (8) away from the damping control element (7); a second elastic element (10) acting between the spring cover (11) and the end pin (9).

4. The damping adjuster of the shock absorber according to claim 3, characterized by The valve housing (3) comprises a first housing (301) and a second housing (302) connected with each other; the action component (4) is arranged in the first housing (301), the main valve (6) and the damping control element (7) are arranged in the second housing (302), and the end cover (8) is mounted on the end of the second housing (302) away from the first housing (301).

5. The damping adjustment device of a shock absorber according to claim 4, characterized in that The first elastic element (5) acts between the second housing (302) and the action component (4).

6. The damping adjustment device of a shock absorber according to claim 5, characterized in that The end pin (9) is arranged in the damping control element (7) and opposite to one end of the damping control element (7), so as to limit the radial movement of the damping control element (7) through the end pin (9).

7. The damping adjuster of the shock absorber according to claim 5, characterized by, The second housing (302) can limit the radial movement of the damping control element (7).

8. The damping adjuster of the shock absorber according to claim 4, characterized by, The first elastic element (5) acts between the first housing (301) and the action component (4).

9. The damping adjuster of any one of claims 3 to 8, wherein The elastic effects of the first elastic element (5) and the second elastic element (10) are different.

10. The damping adjuster of any one of claims 4 to 8, wherein Further comprising a driving element (2) sleeved outside the first housing (301).

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