CN116398573A - Shock absorber assembly - Google Patents

Abstract

The invention discloses a shock absorber assembly, which comprises a shock absorber shell, a guide cylinder, a moving part, an elastic part and a driving part, wherein a piston is arranged in the shock absorber shell and divides the inside of the shock absorber shell to form an upper cavity and a lower cavity; the guide cylinder is arranged at the bottom of the shock absorber shell, the moving part moves axially in the guide cylinder, the driving part is used for pushing the moving part to move axially, and the elastic part is used for applying downward elastic force to the moving part. This patent is through driving piece, changes the position of bumper shock absorber assembly, better adjustment vehicle state, and damping road surface vibration.

Description

Shock absorber assembly

technical field

The invention relates to the technical field of shock absorbers, in particular to a shock absorber assembly.

Background technique

The shock absorber assembly weakens the impact of road vibration on the driver during the running of the vehicle. At present, the general shock absorber assembly has two types of hydraulic spring and compression spring, and the comfort it provides to the vehicle is gradually increasing. However, The air spring needs the compressor to provide compressed air and the matching throttle valve, high sealing requirements, etc. The system is relatively complicated; the hydraulic spring relies on its own hydraulic oil to provide damping, and cooperates with the spring to complete the shock absorption, but it cannot actively adapt Vehicle driving conditions.

Contents of the invention

In view of this, the present invention provides a shock absorber assembly, which can not only satisfy the shock absorption function, but also actively adapt to the state of the vehicle, so as to further increase the comfort of the vehicle.

A shock absorber assembly provided by the present invention adopts the following technical scheme:

A shock absorber assembly, including a shock absorber housing, a guide cylinder, a moving part, an elastic part and a driving part, the shock absorber housing is provided with a piston, and the piston separates the inside of the shock absorber housing and Form the upper cavity and the lower cavity;

The guide cylinder is arranged at the bottom of the shock absorber housing, the moving part moves axially inside the guide cylinder, the driving part is used to push the moving part to move axially, and the elastic part is used to move the moving part Apply a downward stretch.

Optionally, a rotor pump is also included, the rotor pump is arranged in the lower cavity of the shock absorber housing, the rotor pump is in rotation with the moving part, the rotor pump has a planetary wheel, and the rotor of the rotor pump can driven rotation.

Optionally, the moving part drives the rotor pump to rotate.

Optionally, the moving part is an internal gear, and the rotor of the rotor pump is fixedly connected to the transmission shaft through a rotating shaft.

Optionally, the shock absorber housing is provided with a flow pipe for the hydraulic oil to circulate between the upper chamber and the lower chamber.

Optionally, a fixed ring is provided at the bottom of the guide cylinder, and the fixed ring is fixedly connected with the suspension of the vehicle body, and the internal gear is slidingly fitted between the fixed ring and the guide cylinder.

Optionally, the driving member includes a motor, and the motor drives the internal gear to move axially through a transmission shaft.

Optionally, the upper end of the shock absorber housing is fixedly provided with an upper tray, and the lower end is slidably provided with a lower tray, the elastic member is a spring, and the spring is arranged between the upper tray and the lower tray. The gear is used to drive the lower tray to move axially

Optionally, a dust cover is fixedly arranged on the upper tray of the shock absorber housing.

Optionally, the rotor pump is coaxial with the internal gear and has different diameters.

In summary, the present invention includes at least one of the following beneficial technical effects:

1. This patent changes the position of the shock absorber assembly through the driving parts, better adjusts the vehicle state, and attenuates road vibration, which can not only meet the shock absorption function, but also actively adapt to the vehicle state, and further increase the comfort of the vehicle.

2. The internal gear and the rotor pump work together, and the shock absorber can actively adjust the vehicle attitude, attenuate the excitation to the greatest extent, and provide better comfort.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

Fig. 2 is a partial structural diagram of an embodiment of the present invention.

Explanation of reference signs: 1. Shock absorber housing; 2. Guide cylinder; 3. Moving part; 4. Elastic part; 5. Driving part; 6. Piston; 7. Rotor pump; 8. Planetary wheel; 9. Rotation Shaft; 10, draft tube; 11, fixed ring; 12, upper tray; 13, lower tray; 14, dust cover.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawings 1-2.

The embodiment of the invention discloses a shock absorber assembly.

Referring to Fig. 1 and Fig. 2, a shock absorber assembly includes a shock absorber housing 1, a guide cylinder 2, a moving part 3, an elastic part 4 and a driving part 5, and the shock absorber housing 1 is provided with a piston 6 , the piston 6 separates the inside of the shock absorber housing 1 and forms an upper cavity and a lower cavity; the guide cylinder 2 is arranged at the bottom of the shock absorber housing 1, and the moving part 3 moves axially inside the guide cylinder 2 to drive The part 5 is used to push the moving part 3 to move in the axial direction, and the elastic part 4 is used to exert downward elastic force on the moving part 3 . This patent changes the position of the shock absorber assembly through the driving part 5, better adjusts the vehicle state, and attenuates road vibration, which can not only meet the shock absorption function, but also actively adapt to the vehicle state, and further increase the comfort of the vehicle.

The shock absorber housing 1 is provided with a flow pipe 10 for supplying hydraulic oil to circulate between the upper chamber and the lower chamber.

In this embodiment, the moving part 3 adopts an internal gear, and the inside of the guide cylinder 2 is hollow for reciprocating movement of the internal gear along the axial direction of the guide cylinder 2, and enables the upper end surface of the internal gear to compress the elastic member 4. The driving part 5 includes a motor, and the motor drives the internal gear to move axially along the guide cylinder 2 through the transmission shaft. The transmission shaft adopts a screw rod, the internal gear is threadedly connected with the screw rod, and the motor drives the screw rod to rotate, so that the internal gear moves axially along the guide cylinder 2, and the forward and reverse rotation of the motor drives the internal gear to move up and down.

In this embodiment, the upper end of the shock absorber housing 1 is fixedly provided with an upper tray 12 , and the lower end is slidably provided with a lower tray 13 , the upper tray 12 is connected with the vehicle body, and the guide cylinder 2 is used to prevent the lower tray 13 from rotating. In this embodiment, the elastic member 4 is a spring, the spring is arranged between the upper tray 12 and the lower tray 13, the spring is used to apply downward elastic force to the lower tray 13, and the internal gear is used to drive the lower tray 13 to move axially , by adjusting the distance between the lower tray 13 and the upper tray 12, the compression stroke of the spring is changed, and then the elastic force of the spring is changed, so as to realize the change of the damping degree of the shock absorber assembly.

The motor drives the inner gear to move axially, and the upper end surface of the inner gear will compress the externally supported spring to adjust the axial height of the shock absorber assembly, so that the shock absorber can actively adapt to the state of the vehicle, further increasing the comfort of the vehicle.

In the lower cavity of the shock absorber housing 1, a rotor pump 7 is slidingly fitted, and the rotor pump 7 has a planetary wheel 8. In this embodiment, two planetary wheels 8 are installed at intervals along the circumference of the rotor pump 7. The rotating shaft of the wheel 8 is located in the rotor pump 7, the rotor pump 7 has a worm, the worm meshes with two planetary wheels 8, the worm is fixedly connected with the transmission shaft through the rotating shaft 9, and the transmission shaft is driven by the motor to drive the worm to rotate, Thus, the planetary gear 8 is driven to rotate, and the motor realizes the forward and reverse rotation of the planetary gear 8 , thereby changing the flow direction of the hydraulic oil in the shock absorber housing 1 .

When the piston 6 moves down, the hydraulic oil is pressurized after the rotor pump 7 rotates clockwise, and the pressure of the hydraulic oil at the lower end of the rotor pump 7 decreases, so that the hydraulic oil at the upper end of the piston 6 flows to the lower end of the rotor pump 7 through the flow pipe 10; The oil pressure between the upper end and the piston 6 increases, attenuating the moving distance of the piston 6, thereby attenuating the vibration of the road surface; when the piston 6 moves up, the rotor pump 7 rotates counterclockwise, the pressure of the hydraulic oil at the lower end of the rotor pump 7 increases, and the hydraulic oil passes through the The flow tube 10 flows to the upper end of the piston 6, attenuating the moving speed and moving distance of the piston 6, and meanwhile the oil pressure between the rotor pump 7 and the piston 6 decreases, which also hinders the upward movement of the piston 6.

The bottom of the guide cylinder 2 is provided with a fixed ring 11, which is fixedly connected with the suspension of the automobile. The fixed ring 11 is made of high-strength material, and the height of the guide cylinder 2 can be shortened under the condition of satisfying the strength, thereby shortening the height of the shock absorber assembly and reducing the overall weight of the shock absorber assembly.

The driving part 5 drives the moving part 3 to move axially along the guide cylinder 2, thereby adjusting the height of the lower tray 13, and then adjusting the first height of the shock absorber assembly. At the same time, the rotation of the rotor pump 7 can also adjust the shock absorption The second height of the shock absorber assembly, when the drive motor drives the internal gear to move axially, it can also drive the planetary wheel 8 of the rotor pump 7 to rotate. The internal gear and the rotor pump 7 work together to make the shock absorber actively adjust the vehicle attitude , Maximum attenuation excitation, providing better comfort.

In addition, the rotor pump 7 is coaxial with the internal gear and has different diameters. In this embodiment, the diameter of the internal gear is larger than that of the rotor pump 7, so that the rotational speed of the planetary gear 8 of the rotor pump 7 is faster than the rotational speed of the internal gear. 7 Adjust the height of the shock absorber assembly more quickly and provide better comfort.

Moreover, through the speed control of the motor, the control of the hydraulic oil flow speed of the rotor pump 7 can be precisely controlled. When the motor speed is fast, the planetary gear 8 of the rotor pump 7 exerts a large pressure on the hydraulic oil, so that the flow speed of the hydraulic oil Fast; in the same way, when the motor rotates slowly, the flow direction of the hydraulic oil is slow, so that the pressure on the hydraulic oil can be adjusted.

Compared with the spring, the shock absorption effect of hydraulic oil is more intense, and the damping effect of attenuating the road surface is better. Among them, the road surface damping includes peak damping. For peak damping, the shock absorption effect of hydraulic oil is better. When the vehicle passes through the potholes on the road When using the spring, the shock absorber is softer.

A dust cover 14 is fixedly arranged on the upper tray 12 of the shock absorber housing 1 , and the dust cover 14 improves the dustproof effect of the shock absorber housing 1 .

The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered by the protection scope of the present invention Inside.

Claims (10)

1. A shock absorber assembly, characterized in that: the novel shock absorber comprises a shock absorber shell (1), a guide cylinder (2), a moving part (3), an elastic part (4) and a driving part (5), wherein a piston (6) is arranged in the shock absorber shell (1), and the piston (6) separates the interior of the shock absorber shell (1) and forms an upper cavity and a lower cavity;

the guide cylinder (2) is arranged at the bottom of the shock absorber shell (1), the moving part (3) moves axially inside the guide cylinder (2), the driving part (5) is used for pushing the moving part (3) to move axially, and the elastic part (4) is used for applying downward elastic force to the moving part (3).

2. The shock absorber assembly as set forth in claim 1 wherein: still include rotor pump (7), rotor pump (7) set up in the lower cavity of bumper shock absorber casing (1), rotor pump (7) and moving part (3) normal running fit, rotor pump (7) have planet wheel (8), the rotation that the rotor of rotor pump (7) can be driven.

3. The shock absorber assembly as set forth in claim 2 wherein: the moving part (3) drives the rotor pump (7) to rotate.

4. A shock absorber assembly as claimed in claim 3, wherein: the moving part (3) is an internal gear, and a rotor of the rotor pump (7) is fixedly connected with the transmission shaft through a rotating shaft (9).

5. The shock absorber assembly as set forth in claim 1 wherein: a draft tube (10) for circulating hydraulic oil between the upper cavity and the lower cavity is arranged on the shock absorber shell (1).

6. A shock absorber assembly as claimed in claim 3, wherein: the bottom of guide cylinder (2) is provided with retainer plate (11), retainer plate (11) and automobile body suspension fixed connection, internal gear sliding fit sets up between retainer plate (11) and guide cylinder (2).

7. A shock absorber assembly as claimed in claim 3, wherein: the driving piece (5) comprises a motor, and the motor drives the internal gear to axially move through the transmission shaft.

8. A shock absorber assembly as claimed in claim 3, wherein: the upper end of the shock absorber shell (1) is fixedly provided with an upper tray (12), the lower end of the shock absorber shell is provided with a lower tray (13) in a sliding fit mode, the elastic piece (4) is a spring, the spring is arranged between the upper tray (12) and the lower tray (13), and the inner gear is used for driving the lower tray (13) to move along the axial direction.

9. A shock absorber assembly as claimed in claim 3, wherein: a dust cover (14) is fixedly arranged on the upper tray (12) of the shock absorber shell (1).

10. The shock absorber assembly as defined in claim 4, wherein: the rotor pump (7) and the internal gear are coaxial and have different diameters.

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