Bushing, suspension assembly and vehicle

Abstract

The invention discloses a bushing, a suspension assembly and a vehicle, the bushing comprises a rubber main spring, the rubber main spring is provided with a first liquid chamber, a second liquid chamber and an adjusting channel, the adjusting channel is communicated with the first liquid chamber and the second liquid chamber, and the rubber main spring adjusts the fluid flow of the adjusting channel to adjust the fluid flow of the first liquid chamber and the second liquid chamber. And the damping force of fluid circulation between the first liquid chamber and the second liquid chamber is adjusted. According to the lining, the rigidity of the lining can be actively adjusted so as to adjust the damping force of fluid flowing between the first liquid chamber and the second liquid chamber, the adjusting range is larger, and the damping effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a bushing, a suspension assembly and a vehicle. Background Art

[0002] The bushing in the related technology usually includes multiple connected liquid chambers, and the fluids between the multiple liquid chambers can flow into each other. However, after the bushing is manufactured, its working characteristics cannot be changed, that is, the bushing's own stiffness and damping cannot be adjusted, which makes it impossible for the vehicle to achieve optimal comfort and handling stability when passing through different working conditions.

[0003] In some technologies, the ordinary oil in the bushing is replaced with a magnetorheological medium, and then an excitation coil is placed in the bushing. Currents of different sizes are input to make the excitation coil generate different magnetic fields to change the viscosity of the magnetorheological medium, thereby changing the damping force of the magnetorheological medium flowing between multiple liquid chambers. However, this solution cannot change the stiffness resistance of the bushing itself, the adjustment range of the damping of the magnetorheological medium flow is small, and the adjustability of the damping force is poor. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a bushing that can actively adjust its own stiffness to adjust the damping force of the fluid flowing between the first liquid chamber and the second liquid chamber, with a larger adjustment range and better vibration reduction effect.

[0005] The invention also provides a suspension assembly having the bushing.

[0006] The present invention also provides a vehicle having the suspension assembly.

[0007] In order to achieve the above-mentioned purpose, a bushing is proposed according to a first aspect embodiment of the present invention, comprising: a rubber main spring, wherein the rubber main spring is constructed with a first liquid chamber, a second liquid chamber and an adjustment channel, the adjustment channel connects the first liquid chamber and the second liquid chamber, and the rubber main spring adjusts the damping force of the fluid flow between the first liquid chamber and the second liquid chamber by adjusting the fluid flow in the adjustment channel.

[0008] The bushing according to the embodiment of the present invention can actively adjust its own stiffness to adjust the damping force of the fluid flowing between the first liquid chamber and the second liquid chamber, with a larger adjustment range and a better vibration reduction effect.

[0009] According to some embodiments of the present invention, the bushing further includes: an adjusting device, which is disposed in the adjusting channel and actively adjusts the fluid flow in the adjusting channel to adjust the damping force of the fluid circulation between the first liquid chamber and the second liquid chamber.

[0010] According to some embodiments of the present invention, the first liquid chamber, the regulating channel and the second liquid chamber are arranged along the radial direction of the rubber main spring, and the first liquid chamber is adjacent to the central axis of the rubber main spring relative to the second liquid chamber.

[0011] According to some embodiments of the present invention, there are multiple adjustment channels and they are arranged at intervals along the circumference of the rubber main spring; and / or, there are multiple adjustment devices and they are arranged at intervals along the circumference of the rubber main spring.

[0012] According to some embodiments of the present invention, the regulating device includes: a plurality of electromagnetic components, the plurality of electromagnetic components are disposed in the regulating channel, and the plurality of electromagnetic components regulate the fluid flow in the regulating channel according to the magnitude of the current.

[0013] According to some embodiments of the present invention, the plurality of electromagnetic components include: a first electromagnetic component and a second electromagnetic component, wherein the first electromagnetic component and the second electromagnetic component are arranged at intervals along the axial direction of the rubber main spring, and at least one of the first electromagnetic component and the second electromagnetic component is movable to change the distance between the first electromagnetic component and the second electromagnetic component to adjust the fluid flow rate of the adjustment channel.

[0014] According to some embodiments of the present invention, the first electromagnetic component and the second electromagnetic component both include: a magnetic part, which is movably disposed in the adjustment channel; an electromagnetic coil, which is sleeved on the magnetic part, and when the electromagnetic coil is energized, the magnetic part of the first electromagnetic component and the magnetic part of the second electromagnetic component generate electromagnetic forces that attract or repel each other.

[0015] According to some embodiments of the present invention, the first electromagnetic component and the second electromagnetic component further include: an elastic member, the rubber main spring is also configured with a receiving groove, the magnetic member is telescopically disposed in the receiving groove, the elastic member is disposed in the receiving groove and connected between the magnetic member and the side wall of the receiving groove, and the elastic member can generate an elastic force to drive the magnetic member to reset.

[0016] According to some embodiments of the present invention, the fluid in the first liquid chamber and the second liquid chamber is a magnetorheological medium; or, the fluid in the first liquid chamber and the second liquid chamber is an ethylene glycol liquid.

[0017] According to some embodiments of the present invention, the bushing further comprises: an inner frame and an outer frame, the inner frame is arranged in the outer frame, and the rubber main spring is arranged between the inner frame and the outer frame.

[0018] According to some embodiments of the present invention, the inner skeleton is interference fit with the inner circumference of the rubber main spring; and / or the outer skeleton is interference fit with the outer circumference of the rubber main spring.

[0019] According to a second aspect of the present invention, a suspension assembly is provided, comprising: a suspension, wherein the suspension is suitable for being connected to a vehicle frame; and a bushing according to the first aspect of the present invention, wherein a control arm of the suspension is connected to a steering knuckle via the bushing.

[0020] The suspension assembly described in the embodiment of the second aspect of the present invention can actively adjust the stiffness of the bushing by utilizing the bushing described in the embodiment of the first aspect of the present invention to adjust the damping force of the fluid flowing between the first liquid chamber and the second liquid chamber, with a larger adjustment range and a better vibration reduction effect.

[0021] According to a third aspect of the present invention, a vehicle is provided. The vehicle comprises the suspension assembly according to the second aspect of the present invention.

[0022] The vehicle described in the third aspect embodiment of the present invention can actively adjust the stiffness of the bushing to adjust the damping force of the fluid flowing between the first liquid chamber and the second liquid chamber by utilizing the suspension assembly described in the second aspect embodiment of the present invention, with a larger adjustment range and a better shock absorption effect.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a bushing according to an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Bushing; 2. Vehicle;

[0029] 100, rubber main spring; 110, first liquid chamber; 120, second liquid chamber; 130, adjustment channel; 140, receiving groove;

[0030] 200, adjusting device; 210, electromagnetic assembly; 211, first electromagnetic assembly; 212, second electromagnetic assembly; 213, magnetic member; 214, electromagnetic coil; 215, elastic member;

[0031] 300, internal frame; 400, external frame;

[0032] 500. Controller. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0036] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0037] The bushing 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0038] like Figure 1 As shown, the bushing 1 according to the embodiment of the present invention includes a rubber main spring 100, which is constructed with a first liquid chamber 110, a second liquid chamber 120 and an adjusting channel 130. The adjusting channel 130 connects the first liquid chamber 110 and the second liquid chamber 120, and the rubber main spring 100 adjusts the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 by adjusting the fluid flow in the adjusting channel 130.

[0039] The bushing 1 according to the embodiment of the present invention may be applied to a vehicle 2 , for example, a control arm of a suspension may be connected to a steering knuckle via the bushing 1 .

[0040] According to the bushing 1 of the embodiment of the present invention, the rubber main spring is constructed with a first liquid chamber 110, a second liquid chamber 120 and an adjusting channel 130, and the adjusting channel 130 connects the first liquid chamber 110 and the second liquid chamber 120. In this way, when the vehicle 2 is vibrated, for example, when the vehicle 2 passes through an uneven road surface, or when the engine of the vehicle 2 vibrates, the rubber main spring 100 will be squeezed, and the fluid in the first liquid chamber 110 and the second liquid chamber 120 can flow through the adjusting channel 130. When the fluid passes through the adjusting channel 130, energy loss will occur due to friction loss, so that a damping force can be generated to achieve the purpose of vibration reduction, which is beneficial to improving the ride comfort and handling stability of the vehicle 2.

[0041] In addition, the rubber main spring 100 adjusts the damping force of the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120 by adjusting the fluid flow in the adjustment channel 130. In this way, the stiffness of the bushing 1 and the damping force of the fluid flow can be adjusted in real time according to different road conditions. That is, the fluid flow in the adjustment channel 130 can be actively adjusted according to the magnitude of vibration to change the damping force of the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120, so that the ride comfort and handling stability of the vehicle 2 can be optimized.

[0042] Specifically, when the vehicle 2 passes through a bumpy road, the vibration amplitude of the vehicle 2 is relatively large. At this time, the fluid flow rate of the adjustment channel 130 can be made smaller, and the damping force of the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120 is relatively large. The bushing 1 can absorb large vibrations and filter out fine vibrations; while in high-frequency vibrations, such as the vibration of the engine itself, and when the vehicle 2 passes through some gravel roads, the vibration amplitude of the vehicle body is not obvious. At this time, the fluid flow rate of the adjustment channel 130 can be made larger, and the damping force of the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120 is relatively small, thereby fully absorbing low-frequency vibrations and improving the ride comfort of the vehicle 2.

[0043] In addition, it can be understood that by adjusting the fluid flow rate of the adjusting channel 130, the adjustment range of the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 can be larger. For example, when the cross-sectional area of ​​the adjusting channel 130 is smaller, the fluid flow rate of the adjusting channel 130 can be smaller, and the damping force of the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120 can be larger. If the cross-sectional area of ​​the adjusting channel 130 is set larger, the fluid flow rate of the adjusting channel 130 can be larger, the fluid circulation between the first liquid chamber 110 and the second liquid chamber 120 can be smoother, the damping force can be smaller, the adjustment range of the damping force of the bushing 1 is larger, and the vibration reduction effect is better.

[0044] In this way, the bushing 1 according to the embodiment of the present invention can actively adjust its own stiffness to adjust the damping force of the fluid flowing between the first liquid chamber 110 and the second liquid chamber 120, with a larger adjustment range and a better vibration reduction effect.

[0045] In some specific embodiments of the present invention, Figure 1 As shown, the bushing 1 further comprises an adjustment device 200 .

[0046] The regulating device 200 is disposed in the regulating channel 130 , and the regulating device 200 actively regulates the fluid flow in the regulating channel 130 to regulate the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 .

[0047] That is to say, the size of the adjustment channel 130 of the rubber main spring 100 can be fixed. By setting the adjustment device 200 in the adjustment channel 130, the flow rate of the fluid in the adjustment channel 130 per unit time can be adjusted by the adjustment device 200. This is conducive to simplifying the structure of the rubber main spring 100 and facilitating processing. After the rubber main spring 100 is processed, the adjustment device 200 is fixed to the adjustment channel 130, and the adjustment device 200 can be used to adjust the fluid flow rate of the adjustment channel 130.

[0048] In some specific embodiments of the present invention, Figure 1 As shown, the first liquid chamber 110 , the regulating channel 130 and the second liquid chamber 120 are arranged along the radial direction of the rubber main spring 100 , and the first liquid chamber 110 is adjacent to the central axis of the rubber main spring 100 relative to the second liquid chamber 120 .

[0049] That is, the first liquid chamber 110 is an inner liquid chamber of the rubber main spring 100 , and the second liquid chamber 120 is an outer liquid chamber of the rubber main spring 100 .

[0050] Therefore, when the rubber main spring 100 is squeezed and deformed along its radial direction, the volume of one of the first liquid chamber 110 and the second liquid chamber 120 will become smaller. For example, the volume of the first liquid chamber 110 becomes smaller, and the fluid in the first liquid chamber 110 is squeezed through the adjustment channel 130 to flow to the second liquid chamber 120, or the volume of the second liquid chamber 120 becomes smaller, and the fluid in the second liquid chamber 120 is squeezed through the adjustment channel 130 to flow to the first liquid chamber 110. At the same time, the fluid flow rate of the adjustment channel 130 can be actively adjusted by the adjustment device 200, that is, the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 can be changed, and then the damping force of the bushing 1 can be changed, so that the bushing 1 can better absorb vibrations of different frequencies and have a better vibration reduction effect, which is beneficial to improving the ride comfort and handling stability of the vehicle 2.

[0051] In addition, the bushing 1 further comprises an inner frame 300 and an outer frame 400, wherein the inner frame 300 is arranged in the outer frame 400, and the rubber main spring 100 is arranged between the inner frame 300 and the outer frame 400, wherein when the vehicle 2 is subjected to vibration and the inner frame 300 and the outer frame 400 move relative to each other, the inner frame 300 and the outer frame 400 will squeeze the rubber main spring 100 in the radial direction of the rubber main spring 100, that is, the rubber main spring 100 is mainly subjected to the squeezing force in the radial direction thereof, and the first liquid chamber 110 and the second liquid chamber 120 are squeezed in the radial direction of the rubber main spring 100. The rubber main spring 100 is arranged radially, and the adjustment channel 130 is provided between the first liquid chamber 110 and the second liquid chamber 120. When the rubber main spring 100 is subjected to radial extrusion force, the fluid in one liquid chamber can flow to the other liquid chamber through the adjustment channel 130, that is, the fluid in one liquid chamber can flow to the other liquid chamber along the radial direction of the rubber main spring 100. The fluid flow direction is the same as the extrusion force direction, and the fluid flow is smoother, which makes it easier to utilize the bushing 1 to fully absorb vibration, so as to improve the ride comfort and handling stability of the vehicle 2.

[0052] In addition, it should be noted that in the related art, the two liquid chambers and the adjustment channel are arranged along the circumference of the rubber main spring, and the adjustment channel is arranged between the two liquid chambers. In this arrangement, if the deformation of the rubber main spring when squeezed is at the adjustment channel, it will cause the side wall of the adjustment channel to be passively deformed, and even cause the adjustment channel to be blocked, affecting the flow of liquid between the two adjacent liquid chambers. In the present invention, by arranging the first liquid chamber 110, the adjustment channel 130 and the second liquid chamber 120 along the radial direction of the rubber main spring 100, when the rubber main spring 100 is squeezed and deformed, the adjustment channel 130 is less affected, that is, the adjustment channel 130 is not easy to be passively deformed, which is conducive to ensuring that the fluid between the first liquid chamber 110 and the second liquid chamber 120 is unobstructed, so as to better adjust the damping force of the bushing 1.

[0053] In some specific embodiments of the present invention, Figure 1 As shown, there are multiple adjustment channels 130 and they are arranged at intervals along the circumference of the rubber main spring 100 ; and / or, there are multiple adjustment devices 200 and they are arranged at intervals along the circumference of the rubber main spring 100 .

[0054] Among them, the multiple adjustment channels 130 can be two, three, four or more, and the multiple adjustment channels 130 can be evenly spaced along the circumference of the rubber main spring 100. The multiple adjustment devices 200 are arranged in the multiple adjustment channels 130 one by one. In addition, the multiple adjustment channels 130 can be located on the same circumference, so that the fluid in the first liquid chamber 110 and the second liquid chamber 120 can be evenly diverted through the multiple adjustment channels 130, and the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 is smoother to avoid blockage.

[0055] It should be noted that there can be multiple first liquid chambers 110 and second liquid chambers 120, multiple first liquid chambers 110 are evenly spaced and arranged along the circumference of the rubber main spring 100, multiple second liquid chambers 120 are evenly spaced and arranged along the circumference of the rubber main spring 100, and multiple first liquid chambers 110 and multiple second liquid chambers 120 correspond to each other one by one, and each first liquid chamber 110 and each second liquid chamber 120 are connected through an adjustment channel 130. In this way, when the rubber main spring 100 is squeezed, the fluid in one first liquid chamber 110 can flow to one second liquid chamber 120 through the adjustment channel 130, and the fluid in another second liquid chamber 120 can flow to another first liquid chamber 110 through the adjustment channel 130.

[0056] Alternatively, the first liquid chamber 110 and the second liquid chamber 120 are each one, and the first liquid chamber 110 and the second liquid chamber 120 both extend along the circumference of the rubber main spring 100, and a plurality of adjustment channels 130 are respectively connected to the first liquid chamber 110 and the second liquid chamber 120 and are evenly spaced apart along the circumference of the rubber main spring 100. With this arrangement, when the rubber main spring 100 is squeezed, part of the fluid in the first liquid chamber 110 can flow to the second liquid chamber 120 through the adjustment channel 130, and part of the fluid in the second liquid chamber 120 can flow to the first liquid chamber 110 through the adjustment channel 130.

[0057] Thus, the first liquid chamber 110 and the second liquid chamber 120 can be connected through the plurality of regulating channels 130, so as to realize the fluid flow in the first liquid chamber 110 and the second liquid chamber 120. Moreover, by providing a plurality of regulating devices 200, the plurality of regulating devices 200 can respectively adjust the fluid flow of the plurality of regulating channels 130, and then adjust the damping force of the fluid flowing through the plurality of regulating channels 130, further increasing the adjustment range of the damping force of the bushing 1, and the bushing 1 can absorb both high-frequency vibration and low-frequency vibration better.

[0058] In some specific embodiments of the present invention, Figure 1 As shown, a plurality of adjustment channels 130 are disposed on two opposite radial sides of the rubber main spring 100 , and a plurality of adjustment devices 200 are disposed in the plurality of adjustment channels 130 in a one-to-one correspondence.

[0059] That is to say, multiple adjustment channels 130 can be arranged in groups. For example, one group, two groups or more groups of adjustment channels 130 can be provided, each group includes two adjustment channels 130, and the two adjustment channels 130 of each group are symmetrically arranged about the center plane of the rubber main spring 100. In this way, when the rubber main spring 100 is subjected to radial extrusion force, on one radial side of the rubber main spring 100, the fluid in the first liquid chamber 110 on this side can flow to the second liquid chamber 120 through the corresponding adjustment channel 130, and on the other radial side of the rubber main spring 100, the fluid in the second liquid chamber 120 on this side can flow to the first liquid chamber 110 through the corresponding adjustment channel 130. In this way, when the rubber main spring 100 is squeezed and deformed, it can be ensured that the fluid can flow through multiple adjustment channels 130, and the damping force of the bushing 1 can be more effectively adjusted.

[0060] Specifically, when the rubber main spring 100 is squeezed, the volume of the first liquid chamber 110 on one radial side of the rubber main spring 100 will become smaller, and the fluid in the first liquid chamber 110 on this side will flow to the second liquid chamber 120 through the adjusting channel 130, and the volume of the second liquid chamber 120 on the other side of the rubber main spring 100 will become smaller, and the fluid in the second liquid chamber 120 on this side can flow to the first liquid chamber 110 through the adjusting channel 130, and multiple adjusting devices 200 can respectively adjust the fluid flow rates of different adjusting channels 130, and thus can adjust the damping force of the fluid flowing through different adjusting channels 130.

[0061] In some specific embodiments of the present invention, Figure 1 As shown, the regulating device 200 includes a plurality of electromagnetic components 210 , which are disposed in the regulating channel 130 , and the plurality of electromagnetic components 210 regulate the fluid flow in the regulating channel 130 according to the magnitude of the current.

[0062] It can be understood that the control of the current size can be relatively precise. By adjusting the fluid flow rate in the regulating channel 130 according to the current size, it is beneficial to improve the accuracy of regulating the fluid flow rate in the regulating channel 130, and then improve the accuracy of regulating the damping force of the fluid flowing through the regulating channel 130, so that the bushing 1 can better absorb vibrations of different frequencies, further improving the vibration reduction effect of the bushing 1.

[0063] Furthermore, if Figure 1 As shown, the plurality of electromagnetic assemblies 210 include a first electromagnetic assembly 211 and a second electromagnetic assembly 212 .

[0064] The first electromagnetic assembly 211 and the second electromagnetic assembly 212 are arranged at intervals along the axial direction of the rubber main spring 100 , and at least one of the first electromagnetic assembly 211 and the second electromagnetic assembly 212 is movable to change the distance between the first electromagnetic assembly 211 and the second electromagnetic assembly 212 to adjust the fluid flow in the adjustment channel 130 .

[0065] For example, both the first electromagnetic component 211 and the second electromagnetic component 212 can move. When the first electromagnetic component 211 and the second electromagnetic component 212 are close to each other, the fluid flow in the regulating channel 130 decreases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 increases; and when the first electromagnetic component 211 and the second electromagnetic component 212 are away from each other, the fluid flow in the regulating channel 130 increases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 decreases.

[0066] Alternatively, the first electromagnetic component 211 can be fixed, and the second electromagnetic component 212 can be closer to or farther away from the first electromagnetic component 211. When the second electromagnetic component 212 approaches the first electromagnetic component 211, the fluid flow in the regulating channel 130 decreases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 increases. When the second electromagnetic component 212 moves away from the first electromagnetic component 211, the fluid flow in the regulating channel 130 increases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 decreases.

[0067] Alternatively, the second electromagnetic component 212 can be fixed, and the first electromagnetic component 211 can be closer to or farther away from the second electromagnetic component 212. When the first electromagnetic component 211 approaches the second electromagnetic component 212, the fluid flow in the regulating channel 130 decreases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 increases. When the first electromagnetic component 211 moves away from the second electromagnetic component 212, the fluid flow in the regulating channel 130 increases, and the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120 decreases.

[0068] Furthermore, if Figure 1 As shown, the first electromagnetic assembly 211 and the second electromagnetic assembly 212 both include a magnetic member 213 and an electromagnetic coil 214 .

[0069] The magnetic member 213 is movably disposed in the adjustment channel 130 , and the electromagnetic coil 214 is sleeved on the magnetic member 213 . When the electromagnetic coil 214 is energized, the magnetic member 213 of the first electromagnetic component 211 and the magnetic member 213 of the second electromagnetic component 212 generate electromagnetic forces that attract or repel each other.

[0070] Therefore, when the electromagnetic coil 214 is energized, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 will move according to the principle that like charges repel and unlike charges attract, thereby changing the opening size of the regulating channel 130 to control the fluid flow through the regulating channel 130.

[0071] Specifically, in the initial state, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 can be the farthest apart. When the electromagnetic coil 214 is energized, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 attract each other, and the two magnetic parts 213 approach each other, and the fluid flow of the regulating channel 130 becomes smaller. If the current is turned off or reduced, the two magnetic parts 213 can move away from each other, and the fluid flow of the regulating channel 130 becomes larger.

[0072] Alternatively, in the initial state, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 can be closest to each other. When the electromagnetic coil 214 is energized, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 repel each other, and the two magnetic parts 213 move away from each other. If the current is turned off or reduced, the two magnetic parts 213 can move closer to each other.

[0073] It is understandable that when the current increases, the magnetic field strength generated by the electromagnetic coil 214 will also increase accordingly. When the current is maximum, the attraction or repulsion between the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 is maximum, and the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 can be closest or farthest away.

[0074] In some other specific embodiments of the present invention, one of the first electromagnetic component 211 and the second electromagnetic component 212 is provided with a magnetic part 213, and the other of the first electromagnetic component 211 and the second electromagnetic component 212 is provided with a metal part. When the electromagnetic coil 214 is energized, the magnetic part 213 and the metal part attract each other, and the first electromagnetic component 211 and the second electromagnetic component 212 approach each other. If the current is turned off or reduced, the first electromagnetic component 211 and the second electromagnetic component 212 move away from each other.

[0075] In some specific embodiments of the present invention, Figure 1 As shown, the first electromagnetic assembly 211 and the second electromagnetic assembly 212 further include an elastic member 215 .

[0076] The rubber main spring 100 is also constructed with a receiving groove 140, and the magnetic member 213 is telescopically arranged in the receiving groove 140. The elastic member 215 is arranged in the receiving groove 140 and connected between the magnetic member 213 and the side wall of the receiving groove 140, and the elastic member 215 can generate an elastic force to drive the magnetic member 213 to reset.

[0077] Therefore, in the initial state, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 can be farthest apart. When the electromagnetic coil 214 is energized, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 attract each other, the two magnetic parts 213 approach each other, and the elastic part 215 is stretched. If the current is turned off or reduced, the elastic part 215 pulls the two magnetic parts 213 away from each other.

[0078] Alternatively, in the initial state, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 can be closest to each other. When the electromagnetic coil 214 is energized, the magnetic part 213 of the first electromagnetic component 211 and the magnetic part 213 of the second electromagnetic component 212 repel each other, the two magnetic parts 213 move away from each other, and the elastic part 215 is compressed. If the current is turned off or reduced, the elastic part 215 pushes the two magnetic parts 213 closer to each other.

[0079] Furthermore, by providing the receiving groove 140 , it is convenient to fix the elastic member 215 and the magnetic member 213 , and the magnetic member 213 can move in the receiving groove 140 , so the structural setting is more reasonable.

[0080] In some specific embodiments of the present invention, the fluid in the first liquid chamber 110 and the second liquid chamber 120 is a magnetorheological medium. In this way, when the electromagnetic coil 214 is energized, the viscosity of the magnetorheological medium can also change, and then the damping force of the flow of the magnetorheological medium can be adjusted, that is, the flow damping of the magnetorheological medium can be jointly adjusted by adjusting the fluid flow in the adjustment channel 130 and adjusting the viscosity of the magnetorheological medium, thereby further improving the adjustment range of the damping force of the bushing 1, and the adjustability of the damping force is higher. The bushing 1 can adapt to vibrations of different frequencies and has a better vibration reduction effect.

[0081] In some other specific embodiments of the present invention, the fluid in the first liquid chamber 110 and the second liquid chamber 120 is ethylene glycol liquid. That is to say, in this embodiment, the bushing 1 only relies on adjusting the fluid flow rate in the adjusting channel 130 to control the damping force of the fluid flow between the first liquid chamber 110 and the second liquid chamber 120. This is conducive to simplifying the structure of the bushing 1 and further reducing the cost of the bushing 1.

[0082] In some specific embodiments of the present invention, Figure 1As shown, the bushing 1 further includes an inner frame 300 and an outer frame 400 , the inner frame 300 is disposed inside the outer frame 400 , and the rubber main spring 100 is disposed between the inner frame 300 and the outer frame 400 .

[0083] For example, the inner frame 300 may be fixed to a control arm of a suspension, and the outer frame 400 may be connected to a steering knuckle.

[0084] When the vehicle 2 is subjected to vibration, for example, when the vehicle 2 passes over an uneven road surface or the engine itself generates vibration, the control arm and the steering knuckle of the suspension will move relative to each other, thereby driving the inner skeleton 300 and the outer skeleton 400 to move relative to each other, so that the rubber main spring 100 can be squeezed by the inner skeleton 300 and the outer skeleton 400 to change the volume of the first liquid chamber 110 or the second liquid chamber 120, so that the fluid in the first liquid chamber 110 and the second liquid chamber 120 can flow through the adjustment channel 130, and by controlling the fluid flow rate in the adjustment channel 130, the damping force of the fluid flow can be adjusted, that is, the damping force of the bushing 1 can be adjusted to fully absorb the vibration and improve the ride comfort and handling stability of the vehicle 2.

[0085] Furthermore, the inner skeleton 300 is interference fit with the inner circumference of the rubber main spring 100, and the outer skeleton 400 is interference fit with the outer circumference of the rubber main spring 100. With this arrangement, the connection between the rubber main spring 100, the inner skeleton 300 and the outer skeleton 400 can be more reliable and the connection structure is simple, which can not only avoid relative displacement of the rubber main spring 100, the inner skeleton 300 and the outer skeleton 400 along the axial direction of the bushing 1, but also facilitate assembly.

[0086] The inner frame 300 and the outer frame 400 may be connected to other components by bolts. For example, the inner frame 300 and the outer frame 400 may be connected and fixed to a control arm or a steering knuckle of a suspension by bolts.

[0087] The following describes a suspension assembly according to an embodiment of the present invention with reference to the accompanying drawings. The suspension assembly includes a suspension and a bushing 1 according to the above embodiment of the present invention. The suspension is suitable for being connected to a vehicle frame, and a control arm of the suspension is connected to a steering knuckle via the bushing 1.

[0088] In some embodiments, an acceleration sensor can be installed at the connection between the shock absorber and the vehicle body of the vehicle 2, and an IMU sensor (Inertial measurement unit) can be installed under the vehicle armrest box to collect the sprung acceleration, lateral acceleration, and yaw angular velocity signals at the four front, rear, left, and right wheels, and input the signals into the controller 500. The corresponding current is calculated through the algorithm in the controller 500, and then the current is input into the bushing 1 through the wiring harness to control the viscosity of the magnetorheological medium and adjust the fluid flow of the channel 130.

[0089] Furthermore, the electromagnetic component 210 can generate different magnetic field strengths according to different input current signals, thereby controlling the opening size of the adjustment channel 130 and the viscosity of the magnetorheological medium, so as to increase the corresponding stiffness and damping of the bushing 1 according to different vehicle conditions, thereby improving the vehicle's handling stability and comfort.

[0090] According to the suspension assembly of the embodiment of the present invention, by utilizing the bushing 1 according to the above-mentioned embodiment of the present invention, the stiffness of the bushing 1 can be actively adjusted to adjust the damping force of the fluid flowing between the first liquid chamber 110 and the second liquid chamber 120, with a larger adjustment range and a better vibration reduction effect.

[0091] The following describes a vehicle 2 according to an embodiment of the present invention with reference to the accompanying drawings. Figure 2 As shown, a vehicle 2 includes a suspension assembly according to the above-described embodiment of the present invention.

[0092] According to the vehicle 2 of the embodiment of the present invention, by utilizing the suspension assembly according to the above-mentioned embodiment of the present invention, the stiffness of the bushing 1 can be actively adjusted to adjust the damping force of the fluid flowing between the first liquid chamber 110 and the second liquid chamber 120, with a larger adjustment range and a better shock absorption effect.

[0093] The bushing 1, the suspension assembly and other components and operations of the vehicle 2 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0094] In the description of this specification, the description with reference to the terms "specific embodiment", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0095] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bushing (1), characterized in that: include: A rubber main spring (100) is constructed with a first liquid chamber (110), a second liquid chamber (120) and an adjustment channel (130). The adjustment channel (130) connects the first liquid chamber (110) and the second liquid chamber (120). The rubber main spring (100) adjusts the damping force of the fluid flowing between the first liquid chamber (110) and the second liquid chamber (120) by adjusting the fluid flow rate of the adjustment channel (130).

2. The bushing (1) according to claim 1, characterized in that Also includes: The regulating device (200) is disposed in the regulating channel (130), and the regulating device (200) actively regulates the fluid flow in the regulating channel (130) to regulate the damping force of the fluid flow between the first liquid chamber (110) and the second liquid chamber (120).

3. The bushing (1) according to claim 2, characterized in that The first liquid chamber (110), the regulating channel (130) and the second liquid chamber (120) are arranged along the radial direction of the rubber main spring (100), and the first liquid chamber (110) is adjacent to the central axis of the rubber main spring (100) relative to the second liquid chamber (120).

4. The bushing (1) according to claim 3, characterized in that The regulating channels (130) are multiple and are arranged at intervals along the circumference of the rubber main spring (100); and / or The adjusting devices (200) are in plurality and are arranged at intervals along the circumference of the rubber main spring (100).

5. The bushing (1) according to claim 2, characterized in that The regulating device (200) comprises: A plurality of electromagnetic components (210), wherein the plurality of electromagnetic components (210) are arranged in the regulating channel (130), and the plurality of electromagnetic components (210) regulate the fluid flow of the regulating channel (130) according to the magnitude of the current.

6. The bushing (1) according to claim 5, characterized in that The plurality of electromagnetic components (210) include: A first electromagnetic component (211) and a second electromagnetic component (212), wherein the first electromagnetic component (211) and the second electromagnetic component (212) are arranged at intervals along the axial direction of the rubber main spring (100), and at least one of the first electromagnetic component (211) and the second electromagnetic component (212) is movable to change the distance between the first electromagnetic component (211) and the second electromagnetic component (212) to adjust the fluid flow of the adjustment channel (130).

7. The bushing (1) according to claim 6, characterized in that The first electromagnetic component (211) and the second electromagnetic component (212) both include: A magnetic member (213), the magnetic member (213) being movably disposed in the adjustment channel (130); An electromagnetic coil (214), wherein the electromagnetic coil (214) is sleeved on the magnetic component (213), and when the electromagnetic coil (214) is energized, the magnetic component (213) of the first electromagnetic component (211) and the magnetic component (213) of the second electromagnetic component (212) generate electromagnetic forces that attract or repel each other.

8. The bushing (1) according to claim 7, characterized in that The first electromagnetic component (211) and the second electromagnetic component (212) further include: The elastic member (215) is further configured with a receiving groove (140), the magnetic member (213) is telescopically arranged in the receiving groove (140), the elastic member (215) is arranged in the receiving groove (140) and is connected between the magnetic member (213) and the side wall of the receiving groove (140), and the elastic member (215) can generate an elastic force to drive the magnetic member (213) to return to its original position.

9. The bushing (1) according to claim 5, characterized in that The fluid in the first liquid chamber (110) and the second liquid chamber (120) is a magnetorheological medium; or The fluid in the first liquid chamber (110) and the second liquid chamber (120) is ethylene glycol liquid.

10. The bushing (1) according to claim 1, characterized in that Also includes: An inner frame (300) and an outer frame (400), wherein the inner frame (300) is arranged inside the outer frame (400), and the rubber main spring (100) is arranged between the inner frame (300) and the outer frame (400).

11. The bushing (1) according to claim 10, characterized in that The inner frame (300) and the inner circumference of the rubber main spring (100) are interference fit; and / or The outer frame (400) is interference-fitted with the outer peripheral surface of the rubber main spring (100).

12. A suspension assembly, characterized in that: include: Suspension, the suspension being adapted to be connected to a vehicle frame ； According to the bushing (1) according to any one of claims 1 to 11, the control arm of the suspension is connected to the steering knuckle via the bushing (1).

13. A vehicle (2), characterized in that: Comprising a suspension assembly according to claim 12.

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