Stabilizer bar assembly and vehicle

Abstract

The present invention discloses a stabilizer bar assembly and a vehicle. The stabilizer bar assembly includes: a first stabilizer bar and a second stabilizer bar; a cylinder, wherein the first stabilizer bar is fixedly connected to the cylinder, an adjustment chamber and a mounting chamber are formed in the cylinder, and a first regulating valve is provided in the cylinder; a first piston and a rotating shaft, wherein the rotating shaft is connected to the second stabilizer bar, and at least a portion of the rotating shaft extends into the mounting chamber, the first piston is installed in the mounting chamber and sleeved on the outside of the rotating shaft, the rotating shaft is threadedly engaged with the cylinder, and the first piston divides the mounting chamber into a first chamber and a second chamber, the first regulating valve is used to selectively connect the regulating chamber with the first chamber, and the rotating shaft is provided with a second regulating valve, and the second regulating valve is used to selectively connect the first chamber with the second chamber. In an embodiment of the present invention, the first regulating valve and the second regulating valve are built into the cylinder, which reduces the radial dimension of the stabilizer bar disconnection or connection device while facilitating arrangement, integrates the regulating chamber with the cylinder, and solves the problem of the large volume of the external accumulator.

Description

Technical Field

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

[0002] To prevent body roll during cornering and maintain stability, current vehicles are equipped with stabilizer bar assemblies in both the front and rear suspensions. When the vehicle turns, the stabilizer bar assembly is hinged to the left and right sides of the suspension via connecting rods. The connecting rods cause the stabilizer bar assembly to twist, and the resulting reverse torque is transmitted to the suspension through the connecting rods, counteracting suspension rebound and reducing body roll.

[0003] However, while the stabilizer bar assembly plays a role in reducing body roll, it also causes other adverse effects. For example, when the vehicle is traveling in a straight line, the stabilizer bar assembly will transfer the excitation of the wheel on one side to the other side, reducing the comfort of the vehicle body. When the vehicle is in off-road conditions and the left and right wheels bounce, the stabilizer bar will limit the difference in the rebound travel of the wheels, especially when the wheel on the lower side is suspended in the air and loses grip, the vehicle's passability will deteriorate.

[0004] Therefore, the stabilizer bar assembly may need to be connected in some situations to suppress suspension rebound, but in other situations it may need to be disconnected to prevent rebound. However, the existing stabilizer bar assembly disconnection and connection devices have multiple external oil circuits and large radial dimensions. In addition, an external energy storage device is installed for oil supply, resulting in a large external energy storage volume. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a stabilizer bar assembly in which a first regulating valve and a second regulating valve are internally located within a cylinder. This reduces the radial dimensions of the stabilizer bar hydraulic system while facilitating its layout. The regulating chamber is integrated with the cylinder, thereby resolving the larger size of an external accumulator.

[0006] According to an embodiment of the present invention, a stabilizer bar assembly includes: a first stabilizer bar and a second stabilizer bar; a cylinder, the first stabilizer bar is fixedly connected to the cylinder, an adjustment chamber and an installation chamber are formed in the cylinder, and a first regulating valve is provided in the cylinder; a first piston and a rotating shaft, the rotating shaft is connected to the second stabilizer bar, and at least a portion of the rotating shaft extends into the installation chamber, the first piston is installed in the installation chamber and sleeved on the outside of the rotating shaft, the rotating shaft is threadedly engaged with the cylinder, the first piston divides the installation chamber into a first chamber and a second chamber, the first regulating valve is used to selectively connect the regulating chamber with the first chamber, the rotating shaft is provided with a second regulating valve, and the second regulating valve is used to selectively connect the first chamber with the second chamber.

[0007] According to the stabilizer bar assembly of the embodiment of the present invention, a first regulating valve and a second regulating valve are provided in the mounting cavity of the cylinder, and the first regulating valve and the second regulating valve are used to adjust the hydraulic pressure in the first cavity and the second cavity so that the pressures in the first cavity and the second cavity are balanced or have a pressure difference. By setting the pressure difference, the pressure difference offsets the rotation of the piston, that is, the piston in the mounting cavity cannot rotate freely relative to the cylinder. When the pressures in the first cavity and the second cavity are balanced, the piston can rotate freely relative to the cylinder. The cylinder is fixedly connected to the first stabilizer bar, and the cylinder is rotationally connected to the second stabilizer bar. When the cylinder rotates relative to the second stabilizer bar When the first stabilizer bar is in a state of relative rotation, the first stabilizer bar rotates relative to the second stabilizer bar, that is, the first stabilizer bar and the second stabilizer bar are in a disconnected state; when the first stabilizer bar is stationary relative to the first stabilizer bar, it is equivalent to the first stabilizer bar and the second stabilizer bar becoming a whole, that is, the first stabilizer bar and the second stabilizer bar are in a connected state, the stabilizer bar assembly is twisted and deformed, and a torsional reverse torque is generated, so that the stabilizer bar assembly resists the roll effect of the vehicle body; when the first stabilizer bar and the second stabilizer bar are in a state of relative rotation, it is equivalent to the stabilizer bar assembly being disconnected, and there is no roll resistance effect, so that the rebound travel difference between the left and right sides of the suspension increases relative to the stabilizer bar connected state, thereby improving off-road performance.

[0008] In the embodiment of the present invention, the first regulating valve and the second regulating valve are built into the cylinder, which reduces the radial size of the stabilizer bar hydraulic device and facilitates the layout. The regulating chamber is integrated with the cylinder, solving the problem of a large external accumulator volume.

[0009] According to the stabilizer bar assembly of an embodiment of the present invention, a partition is provided in the installation cavity, the partition is located between the regulating cavity and the first cavity, a first flow channel is provided in the partition, and the first regulating valve is installed in the first flow channel.

[0010] According to the stabilizer bar assembly of an embodiment of the present invention, the first flow channel includes a first flow port, a second flow port and a first valve cavity connected between the first flow port and the second flow port, the first flow port is connected to the regulating cavity, the second flow port is connected to the first cavity, and the first regulating valve is movably located in the first valve cavity and is used to selectively connect the first flow port and the second flow port.

[0011] According to an embodiment of the present invention, the stabilizer bar assembly further includes a hydraulic pipeline and a connecting pipeline, the hydraulic pipeline is connected to the first chamber and the second chamber respectively, one end of the connecting pipeline is connected to the hydraulic pipeline, and the other end of the connecting pipeline is connected to the cylinder and connected to the mid-area of ​​the first chamber and the second chamber, and a one-way valve is provided between the connecting pipeline and the first chamber, and between the connecting pipeline and the second chamber.

[0012] According to an embodiment of the present invention, the stabilizer bar assembly further includes a regulating pipeline, one end of which is connected to the connecting pipeline, and the other end of which is connected to the first flow channel and is constantly connected to the first flow port.

[0013] According to the stabilizer bar assembly of an embodiment of the present invention, a second piston is provided in the regulating chamber, the second piston is movable in the regulating chamber, and the second piston separates the regulating chamber into a liquid chamber and a gas chamber, and the liquid chamber is configured to be selectively connected to the first chamber through the first regulating valve.

[0014] According to the stabilizer bar assembly of an embodiment of the present invention, a second flow channel is provided in the rotating shaft, the second flow channel includes a third flow port, a fourth flow port and a second valve cavity connected between the third flow port and the fourth flow port, the third flow port is connected to the first cavity, the fourth flow port is connected to the second cavity, and the second regulating valve is movably located in the second valve cavity and is used to selectively connect the third flow port with the fourth flow port.

[0015] According to the stabilizer bar assembly of the embodiment of the present invention, the second regulating valve is movable in the second valve chamber along the axial direction of the cylinder.

[0016] According to the stabilizer bar assembly of an embodiment of the present invention, the rotating shaft includes a shaft body portion and a sleeve portion, the outer peripheral wall of the sleeve portion is threadedly connected to the inner peripheral wall of the cylinder, one end of the shaft body portion is passed through the sleeve portion and the other end extends to the outside of the cylinder and is connected to the second stabilizer bar; wherein, the third flow port is provided at the end face of the sleeve portion, the second valve cavity is provided in the shaft body portion, and the fourth flow port is provided at the outer peripheral wall of the shaft body portion.

[0017] A vehicle according to an embodiment of the present invention includes the stabilizer bar assembly described above, and the vehicle has the same advantages as the stabilizer bar assembly over the prior art.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 is a schematic diagram of the internal structure of a disconnecting or connecting device of a stabilizer bar assembly according to an embodiment of the present invention;

[0021] Figure 2This is a diagram showing a state in which the first cavity and the second cavity of the disconnection or connection device of the stabilizer bar assembly according to an embodiment of the present invention are in communication;

[0022] Figure 3 This is a schematic diagram showing the connection state of the stabilizer bar assembly according to an embodiment of the present invention, in which the piston is in a non-neutral state, the solenoid valve is closed, and the stabilizer bar returns to a balanced position and is locked;

[0023] Figure 4 The embodiment of the present invention is a connection relationship between the stabilizer bar assembly and the vehicle suspension and wheels;

[0024] Reference numerals:

[0025] Stabilizer bar assembly 100, shock absorber and coil spring assembly 101, wheel 102, connecting rod 103, bushing assembly 104, control arm 105,

[0026] Cylinder 1, regulating chamber 11, gas chamber 111, liquid chamber 112, first chamber 13, second chamber 14, partition 15, first valve chamber 151, first regulating valve 152, first flow port 153, second flow port 154, second piston 16, first end cover 17, second end cover 18, first stabilizer bar 2, second stabilizer bar 3, hydraulic pipeline 4,

[0027] Rotating shaft 5, shaft body 51, sleeve 52, second valve chamber 53, second flow channel 531, third flow port 532, fourth flow port 533, second regulating valve 54, first piston 55,

[0028] One-way valve 6, connecting pipeline 7, pressure sensor 8, control unit 9, regulating pipeline 10. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] Reference below Figure 1-Figure 4 The stabilizer bar assembly 100 according to an embodiment of the present invention is described. The stabilizer bar assembly 100 according to the embodiment of the present invention can be connected or disconnected at any time, and can automatically return to a balanced position when the first stabilizer bar 2 and the second stabilizer bar 3 are reconnected after disconnection. The stabilizer bar assembly 100 can suppress suspension rebound or have a certain rebound according to actual conditions, and the first regulating valve 152 and the second regulating valve 54 are arranged in the installation cavity of the cylinder 1, reducing the radial dimensions of the disconnection and connection device of the stabilizer bar assembly 100 while facilitating the arrangement, integrating the regulating cavity 11 with the cylinder 2, and solving the defect of the large volume of the external accumulator.

[0031] like Figure 1-Figure 4 The stabilizer bar assembly 100 according to an embodiment of the present invention is described, which includes: a first stabilizer bar 2 , a second stabilizer bar 3 , a cylinder 1 , a first piston 55 , and a rotating shaft 5 .

[0032] Among them, the first stabilizer bar 2 is fixedly connected to the cylinder 1, and an adjusting chamber 11 and an installation chamber are formed in the cylinder 1. A first regulating valve 152 is provided in the cylinder 1; the rotating shaft 5 is connected to the second stabilizer bar 3, and at least part of the rotating shaft 5 extends into the installation chamber. The first piston 55 is installed in the installation chamber and is sleeved on the outside of the rotating shaft 5. The rotating shaft 5 is threadedly matched with the cylinder 1. The first piston 55 divides the installation chamber into a first chamber 13 and a second chamber 14. The first regulating valve 152 is used to selectively connect the regulating chamber 11 with the first chamber 13. The rotating shaft 5 is provided with a second regulating valve 54. The second regulating valve 54 is used to selectively connect the first chamber 13 with the second chamber 14.

[0033] In practice, the first stabilizer bar 2 and the cylinder barrel 1 are welded, a rotating shaft 5 is provided in the cylinder barrel 1, and the rotating shaft 5 is connected to the second stabilizer bar 3, the rotating shaft 5 is fixedly connected to the first piston 55, one end of the rotating shaft 5 is fixedly connected to the second stabilizer bar 3 and is rotatably connected to the cylinder barrel 1, and the rotating shaft 5 is also threadedly engaged with the cylinder barrel 1, and at the same time, the first stabilizer bar 2 and the cylinder barrel 1 are fixedly connected, which is equivalent to the first stabilizer bar 2 and the cylinder barrel 1 being integrated, the rotating shaft 5 and the second stabilizer bar 3 can rotate relative to the cylinder barrel 1, that is, the second stabilizer bar 3 can be rotatably connected relative to the first stabilizer bar 2, and when the second stabilizer bar 3 and the first stabilizer bar 2 are relatively rotatably connected, at this time, it is equivalent to the stabilizer bar assembly 100 being in a disconnected state.

[0034] In addition, if the rotating shaft 5 does not rotate or move when the second stabilizer bar 3 drives the rotating shaft 5 to rotate, then it is equivalent to that the rotating shaft 5 and the cylinder 1 are relatively stationary. In other words, the first stabilizer bar 2 and the second stabilizer bar 3 are relatively stationary, that is, the stabilizer bar assembly 100 is a whole. At this time, the stabilizer bar assembly 100 is twisted and deformed when the second stabilizer bar 3 rotates and jumps up, generating a torsional reverse torque, so that the stabilizer bar assembly 100 can resist the roll of the vehicle body.

[0035] In actual design, the mounting chamber of the cylinder 1 is divided into a first chamber 13 and a second chamber 14, and hydraulic oil is provided in the cylinder 1. The first regulating valve 152 is used to selectively connect the regulating chamber 11 and the first chamber 13, and the second regulating valve 54 selectively connects the first chamber 13 and the second chamber 14. When the first regulating valve 152 and the second regulating valve 54 are both closed, the first chamber 13 and the second chamber 14 are disconnected. Then, there is a liquid pressure difference between the first chamber 13 and the second chamber 14. The pressure of the oil can offset the torque when the rotating shaft 5 rotates, so that the second stabilizer bar 3 and the rotating shaft 5 cannot rotate relative to the cylinder 1. At the same time, the first piston 55 cannot move laterally, and the second stabilizer bar 3 and the first stabilizer bar 2 cannot rotate relative to each other. In other words, the first stabilizer bar 2 and the second stabilizer bar 3 are relatively stationary. The first stabilizer bar 2 and the second stabilizer bar 3 can be considered as a whole. At this time, the stabilizer bar assembly 100 is twisted and deformed, generating a torsional reverse torque, thereby realizing the stabilizer bar assembly 100's anti-body roll function.

[0036] When the first regulating valve 152 and the second regulating valve 54 are both opened, the oil in the regulating chamber 11 enters the first chamber 13, and the oil in the first chamber 13 also enters the second chamber 14, so that the oil in the entire cylinder 1 is in a balanced state. Then, when the first stabilizer bar 2 and the cylinder 1 rotate together, the rotating shaft 5 is not affected by the hydraulic resistance. When rebound occurs on the left and right sides of the suspension, the rotating shaft 5 can rotate and move laterally relative to the cylinder 1, and the regulating chamber 11 always adjusts the pressure in the first chamber 13 and the second chamber 14 to keep it in a balanced state. When the rotating shaft 5 rotates and moves away from the first stabilizer bar 2, the second stabilizer bar 3 can rotate relative to the first stabilizer bar 2, which is equivalent to the first stabilizer bar 2 and the second stabilizer bar 3 being disconnected. The stabilizer bar assembly 100 is disconnected and has no anti-roll effect, so that the rebound stroke difference on the left and right sides of the suspension is increased relative to the connected state of the stabilizer bar assembly 100, thereby improving off-road performance.

[0037] Therefore, the connection or disconnection device of the stabilizer bar assembly 100 of the embodiment of the present invention can realize free disconnection or connection while the first regulating valve 152 and the second regulating valve 54 are built into the cylinder 1, which reduces the radial dimension of the cylinder 1 and facilitates the arrangement, integrates the regulating chamber 11 with the cylinder 1, and solves the defect of the large volume of the external accumulator.

[0038] In some embodiments, a partition 15 is provided in the installation cavity, the partition 15 is located between the regulating cavity 11 and the first cavity 13 , a first flow channel is provided in the partition 15 , and the first regulating valve 152 is installed in the first flow channel.

[0039] In actual design, the partition 15 is arranged along the radial direction of the cylinder 1, that is, the partition 15 divides the cylinder 1 into the regulating chamber 11 and the first chamber 13 in the transverse direction; a first flow channel is set in the partition 15, and the flow channel direction of the first flow channel can be set arbitrarily according to actual conditions. For example, the partition 15 can set the first flow channel along the axial direction of the cylinder 1, or it can be set in the radial direction. However, when the first flow channel is set in the radial direction, it is still necessary to connect the first chamber 13 and the regulating chamber 11 in the end, and a first regulating valve 152 is set in the first flow channel. When the first regulating valve 152 is opened, the first chamber 13 and the regulating chamber 11 are connected. When the first regulating valve 152 is closed, the first chamber 13 and the regulating chamber 11 are no longer connected.

[0040] Therefore, the regulating chamber 11 mainly regulates and buffers the pressure in the first chamber 13 and the second chamber 14. When the regulating chamber 11 is connected to the first chamber 13 and the first chamber 13 and the second chamber 14 are connected, the oil can flow to the first chamber 13 through the regulating chamber 11, so that the oil in the first chamber 13 flows to the second chamber 14, and the oil pressure in the first chamber 13 and the second chamber 14 are adjusted so that the oil pressure in the first chamber 13 and the second chamber 14 can reach a balance.

[0041] In addition, it should be noted that the first regulating valve 152 is movable in the radial direction of the cylinder 1 within the partition portion 15 .

[0042] First, a first regulating valve 152 is set in the radial direction. When the first regulating valve 152 is opened, it can move radially toward the outside of the cylinder 1. When the first regulating valve 152 is closed, the first regulating valve 152 moves radially toward the inside of the cylinder 1. This makes it more convenient to control the first regulating valve 152 and does not occupy the volume of the regulating chamber 11 and the first chamber 13, thereby avoiding the first regulating valve 152 occupying the volume of the first chamber 13 or the regulating chamber 11 due to opening or closing, thereby affecting the oil pressure; at the same time, when the first regulating valve 152 needs to be connected to an external control circuit, it is also more convenient to connect the external control circuit in the direction of movement of the first regulating valve 152, wherein the control circuit is provided with a control unit 9, which is mainly used to automatically control the first regulating valve 152 and the second regulating valve 54, that is, the dotted part in the figure is the control circuit.

[0043] The embodiment of the present invention simplifies the external oil circuit by embedding the first regulating valve 152 and the second regulating valve 54 into the cylinder 1, reduces the radial size of the cylinder 1 of the stabilizer bar assembly 100, and facilitates the layout of the stabilizer bar assembly 100 and the cylinder 1.

[0044] In some embodiments, the first flow channel includes a first flow port 153, a second flow port 154 and a first valve chamber 151 connected between the first flow port 153 and the second flow port 154, the first flow port 153 is connected to the regulating chamber 11, the second flow port 154 is connected to the first chamber 13, and the first regulating valve 152 is movably disposed in the first valve chamber 151 and is used to selectively connect the first flow port 153 and the second flow port 154.

[0045] For example, when the first regulating valve 152 is opened, the oil path between the first flow port 153 and the second flow port 154 is connected. When closed, the first regulating valve 152 is used to close the oil path between the first flow port 153 and the second flow port 154, so that the oil in the regulating chamber 11 and the first chamber 13 cannot flow.

[0046] In addition, in actual design, the first flow port 153 and the second flow port 154 can be set at different positions in the radial direction of the partition 15, that is, the first flow port 153 and the second flow port 154 can be set with a position difference in the radial direction of the cylinder 1, and the first valve chamber 151 is located in the space between the first flow port 153 and the second flow port 154. In this way, when the first regulating valve 152 in the first valve chamber 151 blocks the path between the first flow port 153 and the second flow port 154, it can better prevent the oil from flowing between the regulating chamber 11 and the first chamber 13.

[0047] In some embodiments, a hydraulic pipeline 4 and a connecting pipeline 7 are also included. The hydraulic pipeline 4 is connected to the first chamber 13 and the second chamber 14 respectively. One end of the connecting pipeline 7 is connected to the hydraulic pipeline 4, and the other end of the connecting pipeline 7 is connected to the cylinder 1 and is connected to the middle area of ​​the first chamber 13 and the second chamber 14. A one-way valve 6 is provided between the connecting pipeline 7 and the first chamber 13, and between the connecting pipeline 7 and the second chamber 14.

[0048] That is to say, a first hydraulic opening is opened at the position where the first chamber 13 is located, and a second hydraulic opening is opened at the position where the second chamber 14 is located, and a third hydraulic opening is opened between the first hydraulic port and the second hydraulic opening of the cylinder 1. The third hydraulic opening is blocked by the first piston 55 under normal circumstances. The pipeline connecting the first hydraulic opening and the second hydraulic opening is the hydraulic pipeline 4, and a one-way valve 6 is provided on the hydraulic pipeline 4. One end of the connecting pipeline 7 is connected to the third hydraulic opening, and the other end is connected to the hydraulic pipeline 4. A one-way valve 6 is provided on the hydraulic pipeline 4 and on both sides of the connecting pipeline 7.

[0049] exist Figure 1 and Figure 2 In the case where the third hydraulic opening is blocked, that is, when the first piston 55 is in the middle position, the oil in the first chamber 13 and the second chamber 14 cannot flow out due to the presence of the one-way valve 6.

[0050] For example, combining Figure 1 and Figure 4 As shown, the first piston 55 is in the middle position. When the first stabilizer bar 2 and the second stabilizer bar 3 are in the connected state, when rebound occurs on the left and right sides of the suspension, the left and right sides of the suspension each include a shock absorber and a coil spring assembly 101 and a wheel 102; at this time, the first regulating valve 152 and the second regulating valve 54 are both closed. Since the one-way valve 6 is closed by default and the first piston 55 is in the middle position to block the third hydraulic opening, the oil in the first chamber 13 cannot flow into the second chamber 14, and the oil in the second chamber 14 cannot flow out of the first chamber 13. The first regulating valve 152 and the second regulating valve 54 are both closed, and the oil cannot communicate in the regulating chamber 11, the first chamber 13 and the second chamber 14. Then there will be a pressure difference in the oil, and the rotating shaft 5 cannot rotate, thereby meeting the requirement that the first stabilizer bar 2 and the second stabilizer bar 3 are relatively stationary, that is, the first stabilizer bar 2 and the second stabilizer bar 3 are in the connected state.

[0051] For example, combining Figure 2 and Figure 4 As shown, at this time the first piston 55 is still in the middle position. When the first stabilizer bar 2 and the second stabilizer bar 3 are in the disconnected state, it is necessary to connect the first chamber 13 and the second chamber 14, and when rebound occurs on the left and right sides of the suspension, the first regulating valve 152 and the second regulating valve 54 are both opened, and the chambers are connected. The rotating shaft 5 will rotate relative to the cylinder 1 and cause the first piston 55 to move. The first stabilizer bar 2 and the second stabilizer bar 3 are equivalent to being in the disconnected state.

[0052] To sum up, one end of a one-way valve 6 is connected to the first chamber 13, and the other one-way valve 6 is connected to the second chamber 14. When the third hydraulic opening is blocked, that is, when the first piston 55 is in the middle position, since the one-way valve 6 and the first piston 55 are in the middle position to block the third hydraulic opening, the first chamber 13 and the second chamber 14 will no longer be connected through the hydraulic pipeline 4. At this time, the pressure regulation inside the first chamber 13 and the second chamber 14 is mainly completed by the first regulating valve 152 and the second regulating valve 54.

[0053] In some embodiments, the stabilizer bar assembly 100 further includes a regulating line 10 , one end of which is connected to the connecting line 7 , and the other end of which is connected to the first flow channel and is always connected to the first flow port 153 .

[0054] In practice, when the first piston 55 is in the middle position, that is, the third hydraulic opening is blocked, the regulating chamber 11 and the first chamber 13 cannot communicate with the second chamber 14 through the regulating line 10 .

[0055] When the third hydraulic opening is not blocked, that is, Figure 3When the first piston 55 is in a non-neutral position, the one-way valve 6 first has the function of connecting the first chamber 13 and the second chamber 14. For example, the connecting pipe 7 is connected to the inlet end of the one-way valve 6. When the third hydraulic opening is not blocked, the first regulating valve 152 and the second regulating valve 54 are both closed. When rebound occurs on the left and right sides of the suspension, such as the second stabilizer bar 3 on the right side rotates, the oil pressure pushes the one-way valve 6 open, and the pressure in the second chamber 14 is greater than the pressure in the first chamber 13. The oil can flow from the second chamber 14 through the one-way valve 6 to the first chamber 13, and the oil flows from the regulating pipe 10 to the regulating chamber 11 through the second chamber 14. Therefore, the oil pressure in the first chamber 13 or the second chamber 14 can be adjusted according to actual conditions. The rotating shaft 5 moves from left to right when rotating, causing the first piston 55 to move from left to right as well, until the rotating shaft 5 rotates and returns to the position of blocking the third hydraulic opening.

[0056] In some embodiments, a second piston 16 is provided in the regulating chamber 11, and the second piston 16 is movable in the regulating chamber 11. The second piston 16 separates the regulating chamber 11 into a liquid chamber 112 and a gas chamber 111. The liquid chamber 112 is configured to be selectively connected to the first chamber 13 through a first regulating valve 152.

[0057] Specifically, the second piston 16 is a movable piston. For example, when the stabilizer bar assembly 100 is disconnected and the first piston 55 is in the neutral position, the first regulating valve 152 and the second regulating valve 53 are both open. When the second stabilizer bar 3 jumps down, the rotating shaft 5 can rotate relative to the cylinder 1, that is, the second stabilizer bar 3 can rotate relative to the first stabilizer bar 2. During the rotation of the rotating shaft 5, due to the threaded connection between the rotating shaft 5 and the inner circumferential wall of the cylinder 1, the rotating shaft 5 will move rightward along the axial direction of the cylinder 1. When the rotating shaft 5 rotates and moves axially to the right, that is, the first piston 55 moves axially to the right. When the first regulating valve 152 and the second regulating valve 53 are both open, the first chamber 13 and the liquid chamber 112 are connected, and the second chamber 14 and the first chamber 13 are also connected. The oil in the liquid chamber 112 will flow into the first chamber 13 as the first piston 5 moves rightward. At this time, the gas in the gas chamber 111 will also push the second piston 16 to move rightward, so that this process can compensate for the volume of the rotating shaft 5 that has rotated out of the cylinder 1.

[0058] The embodiment of the present invention integrates the regulating chamber 11 with the cylinder 1 to solve the defect of the large volume of the external accumulator. The regulating chamber 11 is separated into a gas-liquid two-phase region by the second piston 16, and a separate liquid chamber 112 is set up to achieve the accumulator effect.

[0059] In some embodiments, a second flow channel 531 is provided in the rotating shaft 5, and the second flow channel 531 includes a third flow port 532, a fourth flow port 533 and a second valve chamber 53 connected between the third flow port 532 and the fourth flow port 533. The third flow port 532 is connected to the first chamber 13, and the fourth flow port 533 is connected to the second chamber 14. The second regulating valve 54 can be movably located in the second valve chamber 53 and is used to selectively connect the third flow port 532 with the fourth flow port 533.

[0060] Specifically, when the third flow port 532 and the fourth flow port 533 are set in the rotating shaft 5, the third flow port 532 can be set opposite the first cavity 13, and the fourth flow port 533 is set in the part of the rotating shaft 5 located in the second cavity 14, and the second regulating valve 54 can selectively block or open the pipeline between the third flow port 532 and the fourth flow port 533; in practice, by setting the second flow channel 531, the second regulating valve 54 is set in the second flow channel 531, the second regulating valve 54 is used to control the connection or disconnection of the first cavity 13 and the second cavity 14, and the second regulating valve 54 is set in the rotating shaft 5, which can save the internal space of the cylinder 1 and is convenient for layout.

[0061] In some embodiments, the second regulating valve 54 is movable in the axial direction of the cylinder barrel 1 within the second valve chamber 53. In this case, the second flow channel 531 is arranged along the axial direction of the rotating shaft 5, and the second regulating valve 54 is movable in the axial direction within the second valve chamber 53. Therefore, the movement of the second regulating valve 54 is consistent with the movement direction of the rotating shaft 5 within the cylinder barrel 1, that is, axially to the left or axially to the right, which further saves axial space. If the second regulating valve 54 is arranged in the radial direction, when the rotating shaft 5 moves axially, the second regulating valve 54 is located within the cylinder barrel 1, making it difficult for the rotating shaft 5 to move axially.

[0062] In some embodiments, the rotating shaft 5 includes a shaft body portion 51 and a sleeve portion 52, the outer peripheral wall of the sleeve portion 52 is threadedly connected to the inner peripheral wall of the cylinder 1, one end of the shaft body portion 51 is passed through the sleeve portion 52 and the other end extends outside the cylinder 1 and is connected to the second stabilizer rod 3; wherein, the third flow port 532 is provided on the end face of the sleeve portion 52, the second valve chamber 53 is provided in the shaft body portion 51, and the fourth flow port 533 is provided on the outer peripheral wall of the shaft body portion 51.

[0063] Reference Figure 1As shown, the sleeve portion 52 is sleeved around the periphery of one end of the shaft portion 51 and is fixedly connected to the shaft portion 51, and a portion of the outer peripheral wall of the sleeve portion 52 is threadedly connected to the inner peripheral wall of the cylinder 1. The sleeve portion 52 can be a ball screw core, and the inner peripheral wall of the cylinder 1 is provided with a ball screw nut integrally formed with the cylinder 1. The sleeve portion 52 and the cylinder 1 are connected via the ball screw core and the ball screw nut. The principle is that when the shaft portion 51 and the ball screw core rotate, the balls roll between the ball screw core and the ball screw nut, thereby driving the shaft portion 51 and the ball screw core to move laterally along the cylinder 1.

[0064] In addition, the second flow channel 531 is arranged in the shaft body 51 of the rotating shaft 5, and the fourth flow port 533 and the second valve chamber 53 are both arranged in the rotating shaft 5. By dividing the rotating shaft 5 into the sleeve portion 52 and the shaft body portion 51, the threaded connection between the sleeve portion 52 and the inner circumferential wall of the cylinder 1 can be facilitated, and at the same time, the rotation of the shaft body portion 51 of the rotating shaft 5 and the extension of the shaft body portion 51 out of the cylinder 1 are facilitated, so that the shaft body portion 51 and the second stabilizing bar 3 are fixedly connected, and the shaft body portion 51 is rotationally connected to the cylinder 1, and the first stabilizing bar 2 at the other end is fixedly connected to the cylinder 1, which allows the first stabilizing bar 2 and the second stabilizing bar 3 to rotate relative to each other.

[0065] It should be noted that the ball screw nut and the cylinder 1 in the embodiment of the present invention are joined by friction welding, the sleeve portion 52 is constructed as the inner core of the ball screw, and balls are provided between the inner core of the ball screw and the ball screw nut. The sleeve portion 52 and the cylinder 1 are connected by balls and the screw nut, so that the friction force is smaller and the resistance during rotation is small. When the sleeve portion 52 rotates relative to the cylinder 1, it is equivalent to the rotation shaft 5 rotating relative to the cylinder 1, so that the second stabilizer bar 3 connected to the rotation shaft 5 can rotate relative to the cylinder 1 and the first stabilizer bar 2.

[0066] Secondly, one end of the cylinder 1 in an embodiment of the present invention is fixedly connected to a first end cover 17, such as by welding or bolting, and the other end is fixedly connected to a second end cover 18, and the first stabilizing bar 2 and the first end cover 17 are fixedly connected, the second stabilizing bar 3 is fixedly connected to the rotating shaft, such as by welding, and the rotating shaft 5 and the cylinder 1 are rotatably connected, and the first end cover 17 and the second end cover 18 are mainly used to support the rotating shaft and close the cavity in the cylinder 1.

[0067] The embodiments of the present invention may be in the following states during actual operation:

[0068] Figure 1 The diagram shows the principle diagram of the connection state of the stabilizer bar assembly 100 when the first regulating valve 152 and the second regulating valve 54 are closed, the first stabilizer bar 2 jumps up, the second stabilizer bar 3 jumps down, and the first piston 55 is in the neutral state.

[0069] The stabilizer bar assembly 100 is mounted on the control arm 105 via the connecting rod 103. The control arm 105 is connected to the shock absorber and coil spring assembly 101 and the wheel 102. When no power is applied, that is, the control unit 9 sends a connection instruction to the stabilizer bar assembly 100, the first regulating valve 152 and the second regulating valve 54 are in the closed state by default, and the one-way valve 6 is also in the closed state by default, and the third hydraulic opening is blocked. When the left and right sides of the suspension rebound, the oil in the first chamber 13 in the cylinder 1 cannot flow out through the left hydraulic pipeline 4, and the oil in the second chamber 14 cannot flow out through the left hydraulic pipeline 4. The oil flows out through the hydraulic pipeline 4 on the right side, the first regulating valve 152 and the second regulating valve 54 are closed, the oil cannot flow through the second flow channel 531 of the rotating shaft 5, the oil in the first chamber 13 and the second chamber 14 cannot be communicated, and the liquid chamber 112 is also not connected to the oil in the first chamber 13. The pressure of the oil offsets the torque generated by the rotation of the rotating shaft 5, so that the ball screw inner core and the ball screw nut cannot rotate, and the rotating shaft 5 cannot rotate or move laterally. At this time, the stabilizer bar assembly 100 is twisted and deformed, generating a torsional reverse torque, so that the stabilizer bar assembly 100 can resist the roll of the vehicle body.

[0070] Figure 2 The schematic diagram shows the disconnected state of the stabilizer bar assembly 100 when the first regulating valve 152 and the second regulating valve 54 are opened, the first stabilizer bar 2 jumps up, the second stabilizer bar 3 jumps down, and the first piston 55 is in the neutral state.

[0071] The stabilizer bar assembly 100 is mounted on the control arm 105 via the connecting rod 103. The control arm 105 is connected to the shock absorber and coil spring assembly 101 and the wheel 102. After power is turned on, the control unit 9 sends a disconnection command to the stabilizer bar assembly 100, and opens the first regulating valve 152 and the second regulating valve 54 at the same time. When the left and right sides of the suspension rebound, for example, the first stabilizer bar 2 jumps up with the shock absorber and coil spring assembly 101 and the wheel 102 on the left side of the suspension, and the second stabilizer bar 3 jumps down with the shock absorber and coil spring assembly 101 and the wheel 102 on the right side of the suspension. Since the first regulating valve 152 and the second regulating valve 54 are opened, the first chamber 13 and the second chamber 14 pass through the second flow channel 53 in the rotating shaft 5. 1 is connected. After the first regulating valve 152 and the second regulating valve 54 are opened, the liquid chamber 112 is connected with the first chamber 13. The cylinder 1 drives the rotating shaft 5 to rotate, causing the rotating shaft 5 to move to the right. During this process, the oil in the liquid chamber 112 will flow to the first chamber 13 as the rotating shaft 5 moves to the right, and the gas in the gas chamber 111 will push the second piston 16 to move to the right. Through this process, the volume of the rotating shaft 1 that is rotated out of the cylinder 1 is compensated, thereby ensuring that there is no axial displacement change between the cylinder 1 and the rotating shaft 5, and also regulating the internal oil pressure; conversely, when the rotating shaft 5 enters the cylinder 1, the free rotation of the screw and the volume compensation of the part where the rotating shaft 5 enters can also be achieved.

[0072] After the first regulating valve 152 and the second regulating valve 54 are energized and opened, the first stabilizer bar 2 and the second stabilizer bar 3 can rotate freely relative to each other to realize the structure. The stabilizer bar assembly 100 is disconnected and has no resistance to roll, so that the rebound stroke difference between the left and right sides of the suspension increases relative to the connected state of the stabilizer bar assembly 100, thereby improving off-road performance.

[0073] Figure 3 The diagram shows the principle of the first piston 55 in a non-neutral state, the first regulating valve 152 and the second regulating valve 54 being closed, and the stabilizer bar connected state. The stabilizer bar assembly 100 is in a disconnected state. When the left and right sides of the suspension rebound, for example, the first stabilizer bar 2 jumps up with the same side of the suspension, and the second stabilizer bar 3 jumps down with the same side of the suspension, the control unit 9 sends a stabilizer bar connection instruction, so that the first regulating valve 152 and the second regulating valve 54 are closed, and the first chamber 13 and the second chamber 14 are no longer connected. However, since the first piston 55 is in a non-neutral state at this time, that is, the third hydraulic opening is not blocked, the second stabilizer bar 3 rotates and drives the rotating shaft 5 to rotate. During the rotation of the rotating shaft 5, the oil pressure opens the one-way valve 6, and the second chamber 14 can be connected to the first chamber 14 through the connecting pipe 7, the regulating pipe 10, and the one-way valve 6. The chamber 13 is connected, and the oil pressure of the second chamber 14 is higher than that of the first chamber 13. The oil in the second chamber 14 flows to the first chamber 13. At the same time, the oil in the liquid chamber 112 is connected to the second chamber 14 through the connecting pipe 7, so that the oil in the second chamber 14 also flows to the liquid chamber 112. The liquid chamber 112 can be connected to the first chamber 13 through the connecting pipe 7 and the one-way valve 6. The oil in the first chamber 13 and the second chamber 14 can be adjusted as the rotating shaft 5 rotates and moves. At the same time, the rotating shaft 5 also moves to the right while rotating until the rotating shaft 5 rotates and moves horizontally to the middle position, blocking the third hydraulic opening on the cylinder 1. The stabilizer bar automatically returns to the equilibrium position and is locked, and vice versa.

[0074] In addition, two pressure sensors 8 are provided in the hydraulic pipeline 4. The two pressure sensors 8 are respectively on both sides of the two one-way valves 6, and one pressure sensor 8 is connected to the first chamber 13, and the other pressure sensor 8 is connected to the second chamber 14, so as to detect and observe the pressure of the first chamber 13 and the second chamber 14.

[0075] It should also be noted that the stabilizer bar assembly 100 also includes a bushing assembly. Bushing assemblies are provided on the exterior of the first stabilizer bar 2 and the second stabilizer bar 3. The first stabilizer bar 2 and the second stabilizer bar 3 are each supported on the vehicle body or subframe via the bushing assemblies. The bushing assemblies include bushings and clamps, with the clamps being used to secure the bushings to the stabilizer bar assembly 100. Furthermore, the stabilizer bar assembly 100 of this embodiment of the present invention is hingedly connected to connecting rods 103 at both ends. The connecting rods 103 are connected to control arms 105, which are connected to the shock absorber and coil spring assembly 101 and the wheel 102.

[0076] An embodiment of the present invention discloses a vehicle, including the above-mentioned stabilizer bar assembly 100. When the vehicle is traveling on a flat ground, the first stabilizer bar 2 and the second stabilizer bar 3 are locked through the first regulating valve 152, the second regulating valve 54 and the hydraulic pipeline 4 to improve the turning stability of the vehicle. When the vehicle is traveling on a rough road, the first stabilizer bar 2 and the second stabilizer bar 3 are unlocked through the first regulating valve 152, the second regulating valve 54 and the hydraulic pipeline 4, so that the wheels 102 on both sides bounce back, so that the wheels 102 on both sides have a larger stroke, which is conducive to the grounding of the wheels 102 on both sides, thereby improving the off-road performance of the vehicle. The locking process is convenient and reliable, and has good impact resistance, so that the vehicle can better adapt to different scenarios, thereby improving the performance of the entire vehicle and enhancing the customer's driving experience.

[0077] 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0078] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0079] In the description of the present invention, "plurality" means two or more.

[0080] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0081] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0082] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0083] While 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A stabilizer bar assembly, characterized in that: include: a first stabilizer bar and a second stabilizer bar; a cylinder, wherein the first stabilizing rod is fixedly connected to the cylinder, an adjusting cavity and an installation cavity are formed in the cylinder, and a first regulating valve is provided in the cylinder; a first piston and a rotating shaft, the rotating shaft being connected to the second stabilizing bar, and at least a portion of the rotating shaft extending into the mounting cavity; the first piston being mounted in the mounting cavity and sleeved on the rotating shaft; the rotating shaft being threadedly engaged with the cylinder barrel; the first piston dividing the mounting cavity into a first cavity and a second cavity; the first regulating valve being used to selectively connect the regulating cavity with the first cavity; and the rotating shaft being provided with a second regulating valve, the second regulating valve being used to selectively connect the first cavity with the second cavity; A second piston is provided in the regulating chamber. The second piston is movable in the regulating chamber and separates the regulating chamber into a liquid chamber and a gas chamber. The liquid chamber is configured to be selectively connected to the first chamber through the first regulating valve.

2. The stabilizer bar assembly according to claim 1, characterized in that: A partition is provided in the installation cavity, the partition is located between the regulating cavity and the first cavity, a first flow channel is provided in the partition, and the first regulating valve is installed in the first flow channel.

3. The stabilizer bar assembly according to claim 2, characterized in that: The first flow channel includes a first flow port, a second flow port and a first valve cavity connected between the first flow port and the second flow port, the first flow port is connected to the regulating cavity, the second flow port is connected to the first cavity, and the first regulating valve is movably located in the first valve cavity and is used to selectively connect the first flow port and the second flow port.

4. The stabilizer bar assembly according to claim 3, characterized in that: It also includes a hydraulic pipeline and a connecting pipeline, the hydraulic pipeline is connected to the first chamber and the second chamber respectively, one end of the connecting pipeline is connected to the hydraulic pipeline, and the other end of the connecting pipeline is connected to the cylinder and connected to the middle area of ​​the first chamber and the second chamber, and a one-way valve is provided between the connecting pipeline and the first chamber, and between the connecting pipeline and the second chamber.

5. The stabilizer bar assembly according to claim 4, characterized in that: It also includes a regulating pipeline, one end of which is connected to the connecting pipeline, and the other end of which is connected to the first flow channel and is always connected to the first flow port.

6. The stabilizer bar assembly according to claim 1, characterized in that: A second flow channel is provided in the rotating shaft, and the second flow channel includes a third flow port, a fourth flow port and a second valve cavity connected between the third flow port and the fourth flow port. The third flow port is connected to the first cavity, and the fourth flow port is connected to the second cavity. The second regulating valve is movably located in the second valve cavity and is used to selectively connect the third flow port with the fourth flow port.

7. The stabilizer bar assembly according to claim 6, characterized in that: The second regulating valve is movable in the second valve chamber along the axial direction of the cylinder.

8. The stabilizer bar assembly according to claim 6, characterized in that: The rotating shaft includes a shaft body and a sleeve portion, the outer peripheral wall of the sleeve portion is threadedly connected to the inner peripheral wall of the cylinder, one end of the shaft body is inserted into the sleeve portion and the other end extends out of the cylinder and is connected to the second stabilizer bar; The third flow port is provided on the end surface of the sleeve portion, the second valve cavity is provided in the shaft portion, and the fourth flow port is provided on the outer peripheral wall of the shaft portion.

9. A vehicle, characterized in that: A stabilizer bar assembly comprising any one of claims 1 to 8.

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