CN113074202A - Bushing assembly, control device and control strategy thereof and vehicle - Google Patents

Bushing assembly, control device and control strategy thereof and vehicle Download PDF

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Publication number
CN113074202A
CN113074202A CN202010009621.1A CN202010009621A CN113074202A CN 113074202 A CN113074202 A CN 113074202A CN 202010009621 A CN202010009621 A CN 202010009621A CN 113074202 A CN113074202 A CN 113074202A
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CN
China
Prior art keywords
pressure
bushing assembly
hydraulic chamber
vehicle
suspension
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Pending
Application number
CN202010009621.1A
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Chinese (zh)
Inventor
焦洪泰
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN202010009621.1A priority Critical patent/CN113074202A/en
Publication of CN113074202A publication Critical patent/CN113074202A/en
Pending legal-status Critical Current

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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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/387—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/387—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions
    • F16F1/3873—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions having holes or openings
    • 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
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06—Stiffness
    • F16F2228/066—Variable stiffness
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/18—Control arrangements
    • F16F2230/183—Control arrangements fluid actuated

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses a bushing assembly, a control device thereof, a control strategy and a vehicle, wherein the bushing assembly comprises: an inner barrel; the outer cylinder is sleeved on the outer side of the inner cylinder and is spaced from the inner cylinder; the main spring is arranged between the inner cylinder and the outer cylinder, a plurality of hydraulic cavities are arranged in the main spring at intervals along the circumferential direction, and the pressure in the plurality of hydraulic cavities can be adjusted to enable the inner cylinder or the outer cylinder to be far away from or close to the center of the lining component. The bushing component can change the rigidity of the bushing component according to needs, and then the inner barrel or the outer barrel can move away from or towards the center of the bushing component.

Description

Bushing assembly, control device and control strategy thereof and vehicle
Technical Field
The invention relates to the field of vehicles, in particular to a bushing assembly, a control device and a control strategy thereof and a vehicle.
Background
In the running process of the automobile, a driver continuously operates the automobile to turn, overtake and change the lane, the automobile is subjected to complex transformation swing under different working conditions, and the instantaneous stability of a flexible original piece in a suspension is adjusted to adapt to the running requirement of the automobile so as to improve the running smoothness and the control stability of the automobile.
In the traditional structure form, the rubber is compressed to deform by using the change of the propelling force, the generated effective rigidity is changed, and the instant impact generated during propelling and retreating is attenuated. Once the assembly space is fixed, the rubber rigidity can only be regulated and controlled by adjusting the rubber hardness or the compression deformation, the vibration impact amplitude absorption of a certain wave band can only be met adaptively, the adjustment of the overall ride comfort is limited qualitatively, the rigidity cannot be better promoted and adjusted randomly, and the overall ride comfort and the riding comfort are affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a bush assembly for a vehicle, which can change its own rigidity as needed, and further, an inner cylinder or an outer cylinder can be moved away from or toward the center of the bush assembly.
Another object of the present invention is to provide a control device of the bushing assembly.
It is a further object of the present invention to provide a control strategy for the bushing assembly described above.
It is a further object of the present invention to provide a vehicle having the bushing assembly or/and control device described above.
A bushing assembly for a vehicle according to the present invention comprises: an inner barrel; the outer cylinder is sleeved on the outer side of the inner cylinder and is spaced from the inner cylinder; the main spring is arranged between the inner cylinder and the outer cylinder, a plurality of hydraulic cavities are arranged in the main spring at intervals along the circumferential direction, and the pressure in the plurality of hydraulic cavities can be adjusted to enable the inner cylinder or the outer cylinder to be far away from or close to the center of the lining component.
According to the bushing assembly for the vehicle, the plurality of hydraulic cavities arranged at intervals along the circumferential direction are arranged in the main spring, and the pressure in the plurality of hydraulic cavities is adjustable, so that the rigidity of the main spring can be changed as required, and further, the inner cylinder or the outer cylinder can move away from or towards the center of the bushing assembly.
According to one embodiment of the present invention, the plurality of hydraulic chambers includes: the hydraulic system comprises a first hydraulic cavity and a second hydraulic cavity, wherein the first hydraulic cavity is located on the front side of the second hydraulic cavity, and the pressure difference between the first hydraulic cavity and the second hydraulic cavity is adjustable.
According to an embodiment of the present invention, the first hydraulic chamber and the second hydraulic chamber are each configured in an arc shape and extend in a circumferential direction of the inner tube.
A control device for a bushing assembly, the bushing assembly being the bushing assembly described above, comprising: the hydraulic system comprises a plurality of execution units and a plurality of pressure sensors, wherein each execution unit is connected with the corresponding hydraulic cavity to adjust the pressure in the corresponding hydraulic cavity, and each pressure sensor is suitable for detecting the pressure in the corresponding hydraulic cavity.
According to an embodiment of the present invention, the control apparatus further includes: the control unit is in communication connection with the plurality of pressure sensors and the plurality of execution units so as to control the corresponding execution units to regulate the pressure of the pressure cavity according to the current working condition of the vehicle.
According to one embodiment of the present invention, the bushing assemblies are plural and provided on the left and right suspension sides of the vehicle, respectively; the control unit is configured to:
when the vehicle runs in a straight line and is accelerated, the corresponding execution units are controlled to act so that the pressure in a front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in a rear side hydraulic cavity of the bushing assembly on the right side of the suspension are higher than the pressure in the rear side hydraulic cavity;
when the vehicle runs in a straight line and decelerates, the corresponding execution units are controlled to act so that the pressure in the front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic cavity of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic cavity;
when the vehicle turns to the left side, controlling the corresponding execution units to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is greater than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is less than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the corresponding execution unit is controlled to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is smaller than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is larger than the pressure in the rear side hydraulic chamber.
A control strategy for a bushing assembly, said control method for controlling said control device, comprising the steps of:
detecting the current working condition of the vehicle;
according to the current working condition of the vehicle, the control unit controls the corresponding execution unit to adjust the pressure of the pressure cavity in the bushing assembly on the left side or/and the bushing assembly on the right side of the vehicle suspension.
According to one embodiment of the invention, when the vehicle is running straight and accelerating, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension are greater than the pressure in the rear side hydraulic chamber;
when the vehicle runs in a straight line and decelerates, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the left side, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is larger than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is lower than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is higher than the pressure in the rear side hydraulic chamber.
A vehicle, comprising: the bushing assembly and/or the control device of the bushing assembly.
According to one embodiment of the invention, the vehicle further comprises: an axle; the plate spring is arranged on the axle, the rear end of the plate spring is connected with the frame of the vehicle, and the front end of the plate spring is connected with the frame through the bushing assembly.
According to one embodiment of the invention, the leaf spring comprises: the front end of the left side plate spring and the front end of the right side plate spring are connected with the frame through the bush component.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a transverse cross-sectional view of a bushing assembly according to an embodiment of the invention;
FIG. 2 is a longitudinal cross-sectional view of a bushing assembly according to an embodiment of the invention;
fig. 3 is a length change diagram of the front end of the left-side leaf spring and the front end of the right-side leaf spring at the time of turning of the vehicle according to the embodiment of the invention.
Reference numerals:
the hydraulic control unit includes a bushing assembly 100, an inner cylinder 110, an outer cylinder 120, a main spring 130, a first hydraulic chamber 101, a second hydraulic chamber 102, a first hydraulic control pump 141, a second hydraulic control pump 142, a first pressure sensor 151, a second pressure sensor 152, a control unit 160, a left plate spring 211, a right plate spring 212, and a plate spring pin 220.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A bushing assembly 100 for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
A bush assembly 100 for a vehicle according to an embodiment of the present invention may include an inner cylinder 110, an outer cylinder 120, and a main spring 130.
Wherein, the inner cylinder 110 is arranged at the inner side of the outer cylinder 120, the outer cylinder 120 is arranged at the outer side of the inner cylinder 110, and the outer cylinder 120 and the inner cylinder 110 are arranged at intervals; the main spring 130 is disposed between the inner cylinder 110 and the outer cylinder 120, and the main spring 130 is fixedly connected to the inner cylinder 110 and the outer cylinder 120, respectively. Specifically, the main spring 130 may be configured as a rubber member, the inner cylinder 110 and the outer cylinder 120 may be configured as a metal member, and the main spring 130 may be vulcanization-fixed with the inner cylinder 110 and the outer cylinder 120, respectively.
In some embodiments of the present invention, a plurality of hydraulic chambers are disposed in the main spring 130 at intervals in the circumferential direction, and the pressure in the plurality of hydraulic chambers can be adjusted to move the inner cylinder 110 or the outer cylinder 120 away from or close to the center of the bushing assembly 100.
For example, the inner tube 110 can be moved in the front-rear direction by adjusting the pressure difference between the front-side hydraulic chamber and the rear-side hydraulic chamber; when the pressure of the front side hydraulic chamber is smaller than that of the rear side hydraulic chamber, the inner cylinder 110 may move forward under the effect of the pressure, and when the pressure of the front side hydraulic chamber is greater than that of the rear side hydraulic chamber, the inner cylinder 110 may move backward under the effect of the pressure.
It should be noted that the bushing assembly 100 of the embodiment of the present invention changes the stiffness of the main spring 130 by adjusting the pressure in the plurality of hydraulic chambers in the main spring 130. When the pressure of the front side hydraulic chamber is less than that of the rear side hydraulic chamber, the rigidity of the front side of the main spring 130 is less than that of the rear side of the main spring 130, and force is more easily transmitted between the rear side of the inner cylinder 110 and the rear side of the outer cylinder 120; when the pressure of the front side hydraulic chamber is greater than the pressure of the rear side hydraulic chamber, the rigidity of the front side of the main spring 130 is greater than the rigidity of the hydraulic chamber at the rear side of the main spring 130, and force is more easily transmitted between the front side of the inner cylinder 110 and the front side of the outer cylinder 120.
During use of the bushing assembly 100, the inner cylinder 110 and the outer cylinder 120 are fixed to the corresponding components, respectively. When the position of the outer cylinder 120 is not changed, the inner cylinder 110 and the parts fixedly connected with the inner cylinder 110 can be moved by changing the pressure difference in the plurality of hydraulic chambers; on the contrary, when the position of the inner cylinder 110 is fixed, the outer cylinder 120 and the components fixedly connected to the outer cylinder 120 can be moved by changing the pressure difference among the plurality of hydraulic chambers.
According to the bushing assembly 100 for a vehicle of the embodiment of the present invention, the plurality of hydraulic chambers are provided at intervals in the circumferential direction in the main spring 130, and the pressure in the plurality of hydraulic chambers is adjustable, so that the rigidity of the main spring 130 can be changed as desired, and further, the inner cylinder 110 or the outer cylinder 120 can be moved away from or toward the center of the bushing assembly 100.
It should be noted that "the center of the liner assembly 100" in the embodiment of the present invention means that the central axes of the inner cylinder 110 and the outer cylinder 120 are the same when the pressures of the plurality of hydraulic chambers are equal.
In some embodiments of the present invention, as shown in fig. 1 and 2, the plurality of hydraulic chambers includes a first hydraulic chamber 101 and a second hydraulic chamber 102, the first hydraulic chamber 101 is located at a front side of the second hydraulic chamber 102, and a pressure difference between the first hydraulic chamber 101 and the second hydraulic chamber 102 is adjustable. That is, the bushing assembly 100 in the embodiment of the present invention is adjustable in rigidity at least in the front-rear direction.
For example, hydraulic oil may be injected into the first hydraulic chamber 101 or/and withdrawn from the second hydraulic chamber 102 such that the pressure in the first hydraulic chamber 101 is greater than the pressure in the second hydraulic chamber 102, and thus the rigidity of the front side of the liner assembly 100 is greater than the rigidity of the rear side of the liner assembly 100, and force may be more easily transmitted through the front side of the liner assembly 100. Of course, it is possible to withdraw hydraulic oil from the first hydraulic pressure chamber 101 or/and inject hydraulic oil into the second hydraulic pressure chamber 102 such that the pressure in the first hydraulic pressure chamber 101 is smaller than the pressure in the second hydraulic pressure chamber 102, and thus the rigidity of the front side of the liner assembly 100 is smaller than the rigidity of the rear side of the liner assembly 100, and force can be more easily transmitted through the rear side of the liner assembly 100.
Specifically, the first hydraulic chamber 101 and the second hydraulic chamber 102 are each configured in an arc shape and extend in the circumferential direction of the inner tube 110. Thus, the first hydraulic chamber 101 may at least partially surround the inner tube 110, and the second hydraulic chamber 102 may also at least partially surround the inner tube 110. Thus, it is ensured that the first and second hydraulic chambers 101 and 102 can more easily push the inner tube 110 or the outer tube 120 toward or away from the center of the liner assembly 100.
It should be noted that the cross sections of the first hydraulic chamber 101 and the second hydraulic chamber 102 are both configured to be arc-shaped, and both extend along the axial direction of the inner cylinder 110 or the outer cylinder 120. Thereby greatly increasing the volumes of the first hydraulic chamber 101 and the second hydraulic chamber 102, and when the pressure difference between the first hydraulic chamber 101 and the second hydraulic chamber 102 changes, the inner cylinder 110 or the outer cylinder 120 can be better pushed to move towards or away from the center of the bushing.
The control device of the bushing assembly of the present invention is briefly described below.
The control device of the present invention is a control device for controlling the above bushing assembly 100, and includes: and a plurality of actuating units, which correspond to the plurality of hydraulic chambers on the bushing assembly 100 one-to-one, each actuating unit being connected to a corresponding hydraulic chamber to adjust a pressure in the corresponding hydraulic chamber.
In particular, the execution unit may be a hydraulically controlled pump. In some embodiments of the present application, the execution unit includes a first hydraulic control pump 141 and a second hydraulic control pump 142, the first hydraulic control pump 141 is connected to the first hydraulic chamber 101 and is configured to inject hydraulic oil into the first hydraulic chamber 101 or extract hydraulic oil from the first hydraulic chamber 101; the second hydraulic chamber 102 is connected to the second hydraulic chamber 102 and is used to inject hydraulic oil into the second hydraulic chamber 102 or to draw hydraulic oil from the second hydraulic chamber 102.
That is, the pressure of the first hydraulic pressure chamber 101 and the pressure of the second hydraulic pressure chamber 102 may be adjusted individually, and of course, the pressure difference between the first hydraulic pressure chamber 101 and the second hydraulic pressure chamber 102 may be adjusted by controlling the first hydraulic pressure control pump 141 and the second hydraulic pressure control pump 142.
According to some embodiments of the invention, the control device further comprises a plurality of pressure sensors, the plurality of pressure sensors corresponding to the plurality of hydraulic chambers one to one, each pressure sensor being adapted to detect a pressure in the corresponding hydraulic chamber. Specifically, the plurality of pressure sensors includes: a first pressure sensor 151 for detecting the pressure of the first hydraulic pressure chamber 101, and a second pressure sensor 152 for detecting the pressure of the second hydraulic pressure chamber 102. Thus, the first pressure sensor 151 can detect the pressure in the first hydraulic pressure chamber 101 in real time, and the second pressure sensor 152 can monitor the pressure in the second hydraulic pressure chamber 102 in real time.
Further, the control device may further include a control unit 160, and the control unit 160 is communicatively connected to the plurality of pressure sensors and the plurality of execution units to control the corresponding execution units to adjust the pressure of the pressure chamber according to the current operating condition of the vehicle.
The control unit 160 is communicatively connected to the first pressure sensor 151, the second pressure sensor 152, the first hydraulic control pump 141, and the second hydraulic control pump 142, respectively. Thus, the control unit 160 can further control the operations of the first hydraulic control pump 141 and the second hydraulic control pump 142 according to the pressure data detected by the first pressure sensor 151 and the second pressure sensor 152, and adjust the pressure difference between the first hydraulic chamber 101 and the second hydraulic chamber 102.
According to some embodiments of the present application, the bushing assemblies are plural and disposed on a left side and a right side of a suspension of a vehicle, respectively; the control unit is configured to:
when the vehicle runs in a straight line and is accelerated, the corresponding execution units are controlled to act so that the pressure in a front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in a rear side hydraulic cavity of the bushing assembly on the right side of the suspension are higher than the pressure in the rear side hydraulic cavity;
when the vehicle runs in a straight line and decelerates, the corresponding execution units are controlled to act so that the pressure in the front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic cavity of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic cavity;
when the vehicle turns to the left side, controlling the corresponding execution units to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is greater than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is less than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the corresponding execution unit is controlled to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is smaller than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is larger than the pressure in the rear side hydraulic chamber.
In some embodiments of the present invention, the main spring 130 is configured as an elastic member. Alternatively, the main spring 130 is constructed as a rubber member having a plurality of relatively sealed hydraulic chambers provided therein. Thereby, not only the main spring 130 itself can change the rigidity by deformation, but also the rigidity in different directions can be changed by the pressure difference in the plurality of hydraulic chambers.
The control strategy for the bushing assembly of the present invention is briefly described below.
The control strategy according to the present invention is used for controlling the above-mentioned control device, and specifically includes the following steps:
detecting the current working condition of the vehicle;
according to the current working condition of the vehicle, the control unit controls the corresponding execution unit to adjust the pressure of the pressure cavity in the bushing assembly on the left side or/and the bushing assembly on the right side of the vehicle suspension.
Specifically, when the vehicle runs straight and accelerates, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the pressure in the rear side hydraulic chamber of the bushing assembly on the right side of the suspension are greater;
when the vehicle runs in a straight line and decelerates, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the left side, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is larger than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is lower than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is higher than the pressure in the rear side hydraulic chamber.
The vehicle in the embodiment of the invention is briefly described below.
According to the vehicle provided by the embodiment of the invention, the bush assembly and/or the control device of the bush assembly are/is arranged, so that the rigidity of the main spring 130 can be changed as required, and further the inner barrel 110 or the outer barrel 120 can move away from or towards the center of the bush assembly 100, and the driving experience of a user is improved.
As shown in fig. 3, a vehicle according to an embodiment of the present invention includes: the vehicle comprises an axle, a leaf spring and a vehicle frame, wherein the vehicle frame is arranged on the axle through the leaf spring. Specifically, a leaf spring is provided on the axle, with the rear end of the leaf spring being connected to the frame of the vehicle and the front end of the leaf spring being connected to the frame via the bushing assembly 100 in the embodiment described above.
The leaf spring may include a left leaf spring 211 and a right leaf spring 212, a front end of the left leaf spring 211 and a front end of the right leaf spring 212 being connected to the vehicle frame through the bushing assembly 100, and a rear end of the left leaf spring 211 and a rear end of the right leaf spring 212 being connected to the vehicle frame.
The front end of the plate spring is provided with a plate spring pin 220, the plate spring pin 220 is inserted into the inner cylinder 110 and is fixedly connected with the inner cylinder 110, and the outer cylinder 120 is fixedly connected with the frame.
When the vehicle travels straight and at a constant speed, the pressures of the front hydraulic chamber (the first hydraulic chamber 101) and the rear hydraulic chamber (the second hydraulic chamber 102) in the bushing assembly 100 at the front end of the left plate spring 211 and the front bushing assembly 100 at the front end of the right plate spring 212 are the same, and the pressure difference between the two chambers is zero, so that the inner cylinder 110 and the plate spring pin 220 fixed to the inner cylinder 110 are located at a middle position.
When the vehicle runs straight and accelerates, in the bushing assembly 100 at the front end of the left plate spring 211 and the bushing assembly 100 at the front side of the right plate spring 212, the pressure in the first hydraulic chamber 101 is greater than the pressure in the second hydraulic chamber 102, and the inner cylinder 110 and the plate spring pin 220 fixed with the inner cylinder 110 move backwards, so that the rigidity of the front side of the bushing assembly 100 is greater than that of the rear side, the forces of the wheels and the axle can be more quickly transmitted to the frame, the driving time is fast in response when the vehicle accelerates, the forward impact phenomenon does not exist, and the riding comfort is improved.
When the vehicle runs straight and decelerates, in the bushing assembly 100 at the front end of the left plate spring 211 and the bushing assembly 100 at the front side of the right plate spring 212, the pressure in the first hydraulic cavity 101 is smaller than the pressure in the second hydraulic cavity 102, the inner cylinder 110 and the plate spring pin 220 fixed with the inner cylinder 110 move forwards, so that the rigidity of the rear side of the bushing assembly 100 is larger than that of the front side, the braking force of wheels and axles can be more quickly transmitted to the frame, the driving time is fast in response when the vehicle decelerates, the forward impact phenomenon does not exist, and the riding comfort is improved.
As shown in fig. 3, in the bushing assembly 100 at the front end of the left leaf spring 211, when the vehicle turns to the left, the pressure in the first hydraulic chamber 101 is greater than the pressure in the second hydraulic chamber 102, and the inner cylinder 110 and the leaf spring pin 220 fixed to the inner cylinder 110 move backward; in the bushing assembly 100 at the front end of the right plate spring 212, the pressure in the first hydraulic chamber 101 is smaller than the pressure in the second hydraulic chamber 102, and the inner cylinder 110 and the plate spring pin 220 fixed to the inner cylinder 110 move forward. Therefore, the distance between the leaf spring pin shaft on the left side of the vehicle and the central axis of the wheel (the length of GH in fig. 3) is smaller than the distance between the leaf spring pin shaft on the right side of the vehicle and the central axis of the wheel (the length of EF in fig. 3), so that the vehicle can smoothly turn, and the uncomfortable feeling caused by the roll impact on the vehicle is greatly reduced.
When the vehicle turns to the right, in the bushing assembly 100 at the front end of the right leaf spring 212, the pressure in the first hydraulic chamber 101 is greater than the pressure in the second hydraulic chamber 102, and the inner cylinder 110 and the leaf spring pin 220 fixed to the inner cylinder 110 move backward; in the bushing assembly 100 at the front end of the left leaf spring 211, the pressure in the first hydraulic chamber 101 is smaller than the pressure in the second hydraulic chamber 102, and the inner cylinder 110 and the leaf spring pin 220 fixed to the inner cylinder 110 move forward. Therefore, the distance between the plate spring pin shaft on the right side of the vehicle and the central axis of the wheel is smaller than the distance between the plate spring pin shaft on the left side of the vehicle and the central axis of the wheel, so that the vehicle can turn smoothly, and the uncomfortable feeling caused by the side-tipping impact of the vehicle is greatly reduced.
According to the vehicle provided by the embodiment of the invention, the pin shaft of the bush component 100 at the front end of the plate spring can be moved forwards or backwards according to the working condition of the vehicle, so that the stability of the vehicle in straight acceleration or deceleration and turning is improved, and the response speed of the vehicle is higher.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A bushing assembly (100) for a vehicle, comprising:
an inner cylinder (110);
the outer cylinder (120), the outer cylinder (120) is sleeved on the outer side of the inner cylinder (110) and is spaced from the inner cylinder (110);
the main spring (130) is arranged between the inner cylinder (110) and the outer cylinder (120), a plurality of hydraulic cavities are arranged in the main spring (130) at intervals along the circumferential direction, and the pressure in the plurality of hydraulic cavities can be adjusted to enable the inner cylinder (110) or the outer cylinder (120) to be far away from or close to the center of the bushing assembly (100).
2. The bushing assembly (100) for a vehicle of claim 1, wherein said plurality of hydraulic chambers comprises: a first hydraulic chamber (101) and a second hydraulic chamber (102), the first hydraulic chamber (101) is located at the front side of the second hydraulic chamber (102), and the pressure difference between the first hydraulic chamber (101) and the second hydraulic chamber (102) is adjustable.
3. The bushing assembly (100) for a vehicle according to claim 2, wherein said first hydraulic chamber (101) and said second hydraulic chamber (102) are each configured in an arc shape and extend in a circumferential direction of said inner tube (110).
4. A control device for a bushing assembly, said bushing assembly (100) according to any one of claims 1-3, comprising: the hydraulic system comprises a plurality of execution units and a plurality of pressure sensors, wherein each execution unit is connected with the corresponding hydraulic cavity to adjust the pressure in the corresponding hydraulic cavity, and each pressure sensor is suitable for detecting the pressure in the corresponding hydraulic cavity.
5. The bushing assembly control device of claim 4, further comprising: a control unit (160), wherein the control unit (160) is in communication connection with the plurality of pressure sensors and the plurality of execution units so as to control the corresponding execution units to regulate the pressure of the pressure cavity according to the current working condition of the vehicle.
6. The bushing assembly control device according to claim 5, wherein said bushing assemblies are plural and provided on a left side and a right side of a suspension of a vehicle, respectively;
the control unit (160) is configured to:
when the vehicle runs in a straight line and is accelerated, the corresponding execution units are controlled to act so that the pressure in a front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in a rear side hydraulic cavity of the bushing assembly on the right side of the suspension are higher than the pressure in the rear side hydraulic cavity;
when the vehicle runs in a straight line and decelerates, the corresponding execution units are controlled to act so that the pressure in the front side hydraulic cavity of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic cavity of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic cavity;
when the vehicle turns to the left side, controlling the corresponding execution units to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is greater than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is less than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the corresponding execution unit is controlled to act so that the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is smaller than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is larger than the pressure in the rear side hydraulic chamber.
7. A control strategy for a bushing assembly, the control method for controlling the control device of any one of claims 1-3, comprising the steps of:
detecting the current working condition of the vehicle;
and controlling the corresponding execution unit to regulate the pressure of the pressure cavity in the bushing assembly on the left side or/and the bushing assembly on the right side of the vehicle suspension according to the current working condition of the vehicle.
8. The bushing assembly control strategy of claim 7, wherein the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the bushing assembly on the right side of the suspension is greater than the pressure in the rear side hydraulic chamber when the vehicle is traveling straight and accelerating;
when the vehicle runs in a straight line and decelerates, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension are smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the left side, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is larger than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is smaller than the pressure in the rear side hydraulic chamber;
when the vehicle turns to the right, the pressure in the front side hydraulic chamber of the bushing assembly on the left side of the suspension is lower than the pressure in the rear side hydraulic chamber, and the pressure in the front side hydraulic chamber of the bushing assembly on the right side of the suspension is higher than the pressure in the rear side hydraulic chamber.
9. A vehicle, characterized by comprising: a bushing assembly (100) according to any one of claims 1-3 or/and a control device of a bushing assembly according to any one of claims 4-6.
10. The vehicle of claim 9, further comprising:
an axle;
the plate spring is arranged on the axle, the rear end of the plate spring is connected with the frame of the vehicle, and the front end of the plate spring is connected with the frame through the bushing assembly (100).
11. The vehicle of claim 10, characterized in that the leaf spring comprises: the front end of the left side plate spring (211) and the front end of the right side plate spring (212) are connected with the frame through the bushing assembly (100).
CN202010009621.1A 2020-01-06 2020-01-06 Bushing assembly, control device and control strategy thereof and vehicle Pending CN113074202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010009621.1A CN113074202A (en) 2020-01-06 2020-01-06 Bushing assembly, control device and control strategy thereof and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010009621.1A CN113074202A (en) 2020-01-06 2020-01-06 Bushing assembly, control device and control strategy thereof and vehicle

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440254A (en) * 1980-12-10 1984-04-03 Nissan Motor Co., Ltd. Compliance steer control system
US4687223A (en) * 1984-04-11 1987-08-18 Mazda Motor Corporation Suspension system for vehicle
US6007072A (en) * 1996-10-31 1999-12-28 Mando Machinery Corporation Vehicle suspension system with roll center control
JP2001173699A (en) * 1999-12-22 2001-06-26 Toyo Tire & Rubber Co Ltd Vibration isolating bush
DE69622141T2 (en) * 1996-01-11 2002-11-28 Ford Motor Co Bushing with variable stiffness using magnetorheological elastomer
CN104141726A (en) * 2013-05-10 2014-11-12 现代摩比斯株式会社 Hydro bush
CN104191927A (en) * 2014-09-12 2014-12-10 东风小康汽车有限公司重庆分公司 Axial variable-damping hydraulic bushing for automotive suspension
CN104315076A (en) * 2014-09-12 2015-01-28 东风小康汽车有限公司重庆分公司 Self-adapting variable-damping hydraulic pressure rubber vibration isolation device for automobile suspension
CN106379123A (en) * 2016-11-08 2017-02-08 安徽江淮汽车股份有限公司 Toe-in bundling lining, torsion beam axle and car

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440254A (en) * 1980-12-10 1984-04-03 Nissan Motor Co., Ltd. Compliance steer control system
US4687223A (en) * 1984-04-11 1987-08-18 Mazda Motor Corporation Suspension system for vehicle
DE69622141T2 (en) * 1996-01-11 2002-11-28 Ford Motor Co Bushing with variable stiffness using magnetorheological elastomer
US6007072A (en) * 1996-10-31 1999-12-28 Mando Machinery Corporation Vehicle suspension system with roll center control
JP2001173699A (en) * 1999-12-22 2001-06-26 Toyo Tire & Rubber Co Ltd Vibration isolating bush
CN104141726A (en) * 2013-05-10 2014-11-12 现代摩比斯株式会社 Hydro bush
CN104191927A (en) * 2014-09-12 2014-12-10 东风小康汽车有限公司重庆分公司 Axial variable-damping hydraulic bushing for automotive suspension
CN104315076A (en) * 2014-09-12 2015-01-28 东风小康汽车有限公司重庆分公司 Self-adapting variable-damping hydraulic pressure rubber vibration isolation device for automobile suspension
CN106379123A (en) * 2016-11-08 2017-02-08 安徽江淮汽车股份有限公司 Toe-in bundling lining, torsion beam axle and car

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Application publication date: 20210706