CN113531032A - Buffer block height dynamic control system and control method - Google Patents
Buffer block height dynamic control system and control method Download PDFInfo
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- CN113531032A CN113531032A CN202110748295.0A CN202110748295A CN113531032A CN 113531032 A CN113531032 A CN 113531032A CN 202110748295 A CN202110748295 A CN 202110748295A CN 113531032 A CN113531032 A CN 113531032A
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- buffer block
- vertical acceleration
- shock absorber
- vehicle
- hydraulic cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a buffer block height dynamic control system and a control method, wherein a buffer block is connected with a support seat on a shock absorber through a hydraulic cylinder, vertical acceleration information of wheels and yaw velocity information of a vehicle are obtained and passed through, whether the vertical acceleration and the yaw velocity reach set thresholds or not is judged, if the vertical acceleration and the yaw velocity reach the thresholds, an oil pressure control signal is sent to a hydraulic pump to control the up-and-down movement of a piston rod of the hydraulic cylinder, and the piston rod of the hydraulic cylinder drives the buffer block to move up and down, so that the gap between the buffer block and a cylinder barrel of the shock absorber is adjusted. The invention can adaptively adjust the contact clearance between the buffer block and the shock absorber according to different working conditions, thereby giving consideration to the controllability and the comfort of the vehicle.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to a system and a method for dynamically controlling the height of a buffer block.
Background
The last used buffer block of automobile shock absorber ware assembly, the purpose prevents when the wheel receives vertical big impact, alleviates the shock absorber and to the impact that the top of the tower brought. The contact gap between buffer block and the bumper shock absorber cylinder is related to the travelling comfort and the nature controlled of vehicle itself, and the contact gap is great, can provide longer cushion time for the impact force that the bumper shock absorber compression produced, can improve the travelling comfort of vehicle, and the contact gap is less, can improve suspension system rigidity, promotes the nature controlled of vehicle itself, consequently, the setting for of contact gap is related to the setting for of vehicle itself, and the travelling comfort can not compromise with the nature controlled completely.
The Chinese patent 'shock absorber, shock absorbing system and vehicle', publication No. CN205780521U, granted publication No. 2016.12.07, discloses a shock absorber, a shock absorbing system and a vehicle, the shock absorber includes a shock absorber cylinder, a dust cap closed at one end of the shock absorber cylinder, a piston rod passing through the dust cap and mounted on the shock absorber cylinder, and a gap adjusting mechanism is mounted on the axial outer end face of the dust cap and the axial inner end face of the buffer block.
The above patent adjusts the pressure of buffer block through setting up a clearance adjustment mechanism between buffer block and bumper shock absorber cylinder and ends the height, and its clearance adjustment mechanism adjusts through the screw thread is vice, realizes the adjustment of buffer block contact gap. However, the contact clearance of the buffer block is adjusted through the thread pair, so that the self-adaptive adjustment of the vehicle cannot be realized, the same contact clearance is adopted when the vehicle is in different working conditions, and the comfort and the controllability of the vehicle cannot be considered at the same time.
Chinese patent "shock absorber and vehicle", publication No. CN111828530A, published japanese patent No. 2020.10.27, discloses a shock absorber, which comprises an oil storage cylinder, a working cylinder and a piston rod, wherein one end of the piston rod is connected with a piston valve, and one end of the piston rod connected with the piston valve is arranged in the working cylinder, and the piston valve divides the working cylinder into an upper working chamber and a lower working chamber; the working cylinder is arranged in the oil storage cylinder, and the oil storage cylinder and the lower working cavity can be communicated through a bottom valve; the piston rod is connected with a displacement self-adaptive valve, the displacement self-adaptive valve is arranged in the upper working cavity, the displacement self-adaptive valve is communicated with the lower working cavity through the piston rod, and the shock absorber is matched with the bottom valve, the piston valve and the displacement self-adaptive valve to generate different damping forces.
The above-mentioned patent is through setting up a displacement self-adaptation valve in the cylinder, also can understand to realize the regulating power on different road surfaces for the valve of adjusting damping, improves the travelling comfort. However, the structure is complex, the cost is high, and the later maintenance is difficult.
Disclosure of Invention
In view of the problems in the background art, an object of the present invention is to provide a system and a method for dynamically controlling the height of a buffer block, which can directly adjust the gap between the buffer block and a contact, thereby achieving self-adaptation.
In order to achieve the above object, the invention provides a buffer height dynamic control system, comprising:
the hydraulic cylinder is arranged on the support seat on the shock absorber, and the buffer block is connected with a piston rod of the hydraulic cylinder; a piston rod of the shock absorber sequentially penetrates through the buffer block and the hydraulic cylinder to be connected with an upper supporting seat of the shock absorber;
the hydraulic pump receives the instruction adjustment of the ECU of the whole vehicle and controls the hydraulic cylinder to act;
the vertical acceleration sensor monitors the vertical jumping condition of the left tire and the right tire and transmits a monitored vertical acceleration signal to the whole vehicle ECU;
the yaw rate sensor is used for acquiring yaw rate information of the vehicle and transmitting a monitored yaw rate signal to an ECU of the whole vehicle;
and the whole vehicle ECU analyzes and calculates whether signals transmitted by the vertical acceleration sensor and the yaw rate sensor reach a set threshold value or not, and sends an oil pressure control signal to the hydraulic pump control hydraulic cylinder to adjust the clearance between the buffer block and the shock absorber cylinder if the signals reach the threshold value.
Preferably, the vertical acceleration sensor is arranged at any suitable position of the wheel edge.
Further preferably, the vertical acceleration sensor is mounted near the outer point of the triangular arm on the left and right wheel sides.
Preferably, the yaw rate sensor is integrated in an electronic stabilizing system of the vehicle body, and the installation position is in a front cabin.
The invention discloses a buffer block height dynamic control method, which is characterized by comprising the following steps:
and obtaining and judging the vehicle state through the vertical acceleration information of the wheels and the yaw velocity information of the vehicle, if:
when the vertical acceleration reaches a set vertical acceleration threshold value, the gap between the buffer block and the shock absorber cylinder barrel is increased;
and when the yaw velocity reaches the set yaw velocity threshold value, reducing the clearance between the buffer block and the cylinder barrel of the shock absorber.
Preferably, when the yaw rate and the vertical acceleration both reach the set threshold, the clearance between the buffer block and the damper cylinder is controlled based on the yaw rate information. Thus, sudden changes in the structure of the vehicle itself are prevented, giving the passengers additional discomfort.
Preferably, the clearance between the buffer block and the cylinder barrel of the shock absorber is adjusted by controlling a hydraulic cylinder fixed on a support seat on the shock absorber; the buffer block is connected with a piston rod of the hydraulic cylinder.
Preferably, the vertical acceleration information of the wheel is acquired by a vertical acceleration sensor.
Preferably, the yaw rate information of the vehicle is acquired by a yaw rate sensor.
The invention has the beneficial effects that: the invention connects the buffer block with the upper supporting seat of the shock absorber through the hydraulic cylinder,
the vertical acceleration information of the wheels and the yaw velocity information of the vehicle are obtained and used for judging whether the vertical acceleration and the yaw velocity reach set thresholds or not, if the vertical acceleration and the yaw velocity reach the thresholds, an oil pressure control signal is sent to a hydraulic pump to control the piston rod of the hydraulic cylinder to move up and down, the piston rod of the hydraulic cylinder drives the buffer block to move up and down, and therefore the gap between the buffer block and the cylinder barrel of the shock absorber is adjusted.
According to the invention, through setting of the vertical acceleration sensor and the yaw angular velocity sensor, whether the vehicle is in a pit flushing working condition or a turning working condition can be judged; through reciprocating of whole car ECU control piston rod, can match not the buffer block contact gap of equidimension according to the operating mode of difference, make the vehicle compromise travelling comfort and nature controlled.
The invention can adaptively adjust the contact clearance between the buffer block and the shock absorber according to different working conditions, thereby giving consideration to the controllability and the comfort of the vehicle.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a control logic diagram of the present invention
Detailed Description
The technical solutions of the present invention (including the preferred ones) are further described in detail by way of fig. 1 to 2 and enumerating some alternative embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in FIG. 1, the dynamic control system for the height of the buffer block comprises a hydraulic cylinder, a hydraulic pump, a vertical acceleration sensor, a yaw rate sensor and a whole vehicle ECU;
the hydraulic cylinder 1 consists of three parts: the hydraulic cylinder comprises a hydraulic cylinder body 1.1, a hydraulic cylinder piston rod 1.2 and a hydraulic cylinder mounting seat 1.3. The hydraulic cylinder body 1.1 is fixed with the upper supporting seat 2 of the shock absorber, the buffer block 3 is connected with the hydraulic cylinder piston rod 1.2 through the hydraulic cylinder mounting seat 1.3, hydraulic oil is arranged in the hydraulic cylinder body 1.1, the upper cavity and the lower cavity of the hydraulic cylinder body 1.1 are different in oil pressure, the hydraulic cylinder piston rod 1.2 is driven to move up and down, and the movement of the hydraulic cylinder piston rod 1.2 drives the buffer block 3 to move, so that the buffer block 3 and the shock absorber cylinder barrel 4 have different contact gaps under different working conditions.
The hydraulic pump receives the instruction adjustment of the ECU of the whole vehicle and controls the hydraulic cylinder to act; the hydraulic pump adjusts the hydraulic pressure of the upper cavity and the lower cavity of the hydraulic cylinder 1 to realize the up-and-down movement of a piston rod 1.2 of the hydraulic cylinder; the pneumatic cylinder piston rod 1.2 reciprocates and drives the removal of buffer block 3, and then can adjust the contact clearance of buffer block 3 and bumper shock absorber cylinder 4.
The vertical acceleration sensor monitors the vertical jumping condition of the left tire and the right tire and transmits a monitored vertical acceleration signal to the whole vehicle ECU;
the yaw rate sensor is used for acquiring yaw rate information of the vehicle and transmitting a monitored yaw rate signal to an ECU of the whole vehicle;
and the whole vehicle ECU analyzes and calculates whether signals transmitted by the vertical acceleration sensor and the yaw rate sensor reach a set threshold value or not, and sends an oil pressure control signal to the hydraulic pump control hydraulic cylinder to adjust the clearance between the buffer block and the shock absorber cylinder if the signals reach the threshold value.
As shown in fig. 1 and fig. 2, the method for dynamically controlling the height of the buffer block according to the present invention,
a vertical acceleration sensor is arranged near the outer point of the triangular arm at the left wheel side and the right wheel side, the vertical jumping condition of the left tire and the right tire is monitored, and the monitored vertical acceleration signals are transmitted to an ECU of the whole vehicle;
a yaw rate sensor is arranged on the whole vehicle, when the vehicle has steering operation, the yaw rate information of the vehicle can be read, and the monitored yaw rate signal is transmitted to an ECU of the whole vehicle. The yaw rate sensor can be integrated in an ESC (electronic stability control system for vehicle body) installed in the front nacelle, generally inside the side rails;
for the yaw angular velocity sensor and the vertical acceleration sensor, no signal is transmitted between the yaw angular velocity sensor and the vertical acceleration sensor, the yaw angular velocity corresponds to a lateral force working condition (turning working condition), the vertical acceleration sensor corresponds to a vehicle bank-passing working condition (vertical wheel jumping working condition), and different working conditions correspond to the intervention of respective sensors.
And the ECU of the whole vehicle analyzes and calculates whether the signals transmitted by the two sensors reach a set threshold value, and if so, sends an oil pressure control signal to the hydraulic pump. For the setting of the threshold, different vehicle types can set different threshold values, the threshold values need to be set according to vehicle styles, and the threshold values are debugged through a calibration test in the early development process of the vehicle.
When a vehicle encounters a pit or threshold-crossing impact, the tire is excited by the road surface and can jump up and down, in the process of jumping up the tire, the shock absorber cylinder 4 can be compressed until the shock absorber cylinder 4 contacts the buffer block 3, and then the buffer block 3 is compressed, and if the contact gap between the shock absorber cylinder 4 and the buffer block 3 is too small, large impact on the road surface can be more transferred to the buffer block 3 and then transferred to a vehicle body; therefore, this operating mode should set up great buffer block contact gap, and like this, the release road surface that the bumper shock absorber can be more strikes, and the impact force that bumper shock absorber cylinder 4 transmitted buffer block 3 can reduce, and the vehicle crosses the hole and can be more comfortable.
Vertical acceleration sensor through triangle arm outlier, can directly embody the size that the tire received the vertical excitation of road surface, the tire receives vertical excitation back, vertical acceleration sensor gives whole car ECU with vertical acceleration signal transmission, vertical acceleration threshold A can be set for, if the road surface excitation exceeds threshold A, then whole car ECU sends the signal of telecommunication with vertical acceleration signal assorted for the hydraulic pump, the hydraulic pump is according to the signal of telecommunication of equidimension not, the pressure differential of corresponding control pneumatic cylinder 1 upper and lower cavity, control hydraulic piston rod 1.2 rebound, hydraulic piston rod 1.2 drives buffer block 3 and upwards moves, and then make contact gap grow between shock absorber cylinder 4 and the buffer block 3, make the road surface excitation more by the shock absorber release in compression process, reduce the impact force of buffer block 3 transmission automobile body, improve the travelling comfort that the vehicle crossed the hole.
When the vehicle is under the operating mode of turning, because the effect of lateral force, the vehicle can take place to bank, and the more that heels, can bring unsafe sense for the passenger, the worse is the controllability of vehicle.
Therefore, whether the vehicle turns or not can be monitored through the yaw rate sensor, and the rotating speed can be monitored. When the vehicle turns, the yaw rate sensor monitors a current yaw rate signal, the yaw rate signal is transmitted to the entire vehicle ECU, a yaw rate threshold B can be set, if the yaw rate exceeds the threshold B, the entire vehicle ECU sends an electric signal matched with the yaw rate to the hydraulic pump, the hydraulic pump controls the pressure difference of the upper cavity and the lower cavity of the hydraulic cylinder 1 according to the electric signals with different sizes, the piston rod 1.2 of the hydraulic cylinder is controlled to move downwards, the buffer block 3 is driven to move downwards, the contact gap between the cylinder barrel 4 of the shock absorber and the buffer block 3 is reduced, the contact gap is smaller, the roll angle rigidity of the vehicle can be improved, the load transfer under the roll working condition is reduced, the roll of the vehicle under the turning working condition is reduced, and the controllability of the vehicle is improved.
Thus, the invention obtains and judges the vehicle state through the vertical acceleration information of the wheels and the yaw velocity information of the vehicle, if: when the vertical acceleration reaches a set vertical acceleration threshold value, the gap between the buffer block and the shock absorber cylinder barrel is increased; and when the yaw velocity reaches the set yaw velocity threshold value, reducing the clearance between the buffer block and the cylinder barrel of the shock absorber.
However, when a normal customer drives a vehicle, under a turning working condition, if the road condition is not good, a pothole exists, the general vehicle speed is low, and the lateral force of the vehicle is small under low vehicle speed; if the road condition is good, the vehicle speed is high, and the lateral force is large at the moment. If the customer is in a turning situation, the safety of the customer can be affected if the customer tells that the turning is passed through the hollow road.
Based on the background, in the early vehicle debugging process, the working condition that the turning working condition and the pit-crossing working condition appear simultaneously can be considered for the threshold setting, and the yaw rate threshold setting needs to be larger and intervenes when the vehicle is close to the sharp turning working condition.
When the yaw angular velocity sensor and the vertical acceleration sensor reach the set threshold value, the working condition only occurs when the pit is crossed in the sharp turning process. Under the working condition, the yaw velocity firstly reaches a threshold value, after the yaw velocity and the vertical acceleration reach the threshold value after the pit is crossed, at the moment, the ECU only adopts a signal of the yaw velocity to control the hydraulic cylinder according to the signal of the yaw velocity. The purpose is to prevent sudden changes in the structure of the vehicle itself when two operating conditions occur simultaneously, bringing additional discomfort to the passengers.
Preferably, the setting of the position of the vertical acceleration sensor can be placed at any suitable position of the wheel edge, and the outer point of the triangular arm is not necessarily limited. .
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.
Claims (9)
1. A bump stop height dynamic control system, comprising:
the hydraulic cylinder is arranged on the support seat on the shock absorber, and the buffer block is connected with a piston rod of the hydraulic cylinder; a piston rod of the shock absorber sequentially penetrates through the buffer block and the hydraulic cylinder to be connected with an upper supporting seat of the shock absorber;
the hydraulic pump receives the instruction adjustment of the ECU of the whole vehicle and controls the hydraulic cylinder to act;
the vertical acceleration sensor monitors the vertical jumping condition of the left tire and the right tire and transmits a monitored vertical acceleration signal to the whole vehicle ECU;
the yaw rate sensor is used for acquiring yaw rate information of the vehicle and transmitting a monitored yaw rate signal to an ECU of the whole vehicle;
and the whole vehicle ECU analyzes and calculates whether signals transmitted by the vertical acceleration sensor and the yaw rate sensor reach a set threshold value or not, and sends an oil pressure control signal to the hydraulic pump control hydraulic cylinder to adjust the clearance between the buffer block and the shock absorber cylinder if the signals reach the threshold value.
2. The bump stop height dynamic control system of claim 1, wherein: the vertical acceleration sensor is arranged at any suitable position of the wheel edge.
3. The bump stop height dynamic control system of claim 2, wherein: and the vertical acceleration sensor is arranged near the outer points of the triangular arms on the left and right wheel sides.
4. The bump stop height dynamic control system of claim 1, wherein: the yaw rate sensor is integrated in an electronic stabilizing system of the vehicle body, and the installation position is in a front cabin.
5. The control method applied to the dynamic control system for the height of the buffer block in claims 1 to 5 is characterized in that: and obtaining and judging the vehicle state through the vertical acceleration information of the wheels and the yaw velocity information of the vehicle, if:
when the vertical acceleration reaches a set vertical acceleration threshold value, the gap between the buffer block and the shock absorber cylinder barrel is increased;
and when the yaw velocity reaches the set yaw velocity threshold value, reducing the clearance between the buffer block and the cylinder barrel of the shock absorber.
6. The method of claim 5, wherein: and when the yaw angular velocity and the vertical acceleration reach the set threshold, controlling the clearance between the buffer block and the cylinder barrel of the shock absorber according to the information of the yaw angular velocity.
7. The buffer block height dynamic control method according to claim 5 or 6, wherein: the clearance between the buffer block and the cylinder barrel of the shock absorber is adjusted by controlling a hydraulic cylinder fixed on a supporting seat on the shock absorber; the buffer block is connected with a piston rod of the hydraulic cylinder.
8. The buffer block height dynamic control method according to claim 5 or 6, wherein: and acquiring the vertical acceleration information of the wheel through a vertical acceleration sensor.
9. The buffer block height dynamic control method according to claim 5 or 6, wherein: yaw-rate information of the vehicle is acquired by a yaw-rate sensor.
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| CN202110748295.0A CN113531032B (en) | 2021-06-29 | 2021-06-29 | Buffer block height dynamic control system and control method |
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| CN202110748295.0A CN113531032B (en) | 2021-06-29 | 2021-06-29 | Buffer block height dynamic control system and control method |
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| CN113531032B CN113531032B (en) | 2022-08-30 |
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| EP0501132A1 (en) * | 1991-02-27 | 1992-09-02 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Suspension strut for an automatic vehicle |
| US20050139440A1 (en) * | 2003-12-26 | 2005-06-30 | Nifco Inc. | Damper |
| CN201143882Y (en) * | 2007-12-27 | 2008-11-05 | 比亚迪股份有限公司 | Limiting bumping block for shock absorber |
| CN204726178U (en) * | 2015-05-15 | 2015-10-28 | 广州汽车集团股份有限公司 | Shock absorber and suspension |
| CN204774471U (en) * | 2015-06-26 | 2015-11-18 | 广州汽车集团股份有限公司 | Shock absorber and suspension |
| CN208565398U (en) * | 2018-06-21 | 2019-03-01 | 上汽通用汽车有限公司 | A kind of vibration damper assembly and car body |
| CN211259445U (en) * | 2019-10-24 | 2020-08-14 | 广州汽车集团股份有限公司 | Automobile shock absorber and suspension |
| CN111828530A (en) * | 2020-07-23 | 2020-10-27 | 北京汽车股份有限公司 | Shock absorber and vehicle |
| CN112576680A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Shock absorber and vehicle |
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2021
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501132A1 (en) * | 1991-02-27 | 1992-09-02 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Suspension strut for an automatic vehicle |
| US20050139440A1 (en) * | 2003-12-26 | 2005-06-30 | Nifco Inc. | Damper |
| CN201143882Y (en) * | 2007-12-27 | 2008-11-05 | 比亚迪股份有限公司 | Limiting bumping block for shock absorber |
| CN204726178U (en) * | 2015-05-15 | 2015-10-28 | 广州汽车集团股份有限公司 | Shock absorber and suspension |
| CN204774471U (en) * | 2015-06-26 | 2015-11-18 | 广州汽车集团股份有限公司 | Shock absorber and suspension |
| CN208565398U (en) * | 2018-06-21 | 2019-03-01 | 上汽通用汽车有限公司 | A kind of vibration damper assembly and car body |
| CN112576680A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Shock absorber and vehicle |
| CN211259445U (en) * | 2019-10-24 | 2020-08-14 | 广州汽车集团股份有限公司 | Automobile shock absorber and suspension |
| CN111828530A (en) * | 2020-07-23 | 2020-10-27 | 北京汽车股份有限公司 | Shock absorber and vehicle |
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