Stabilizer bar assembly and vehicle

Abstract

A stabilizer bar assembly (100) and a vehicle. The stabilizer bar assembly comprises a first stabilizer bar (11) and a second stabilizer bar (12); a cylinder barrel (13) having a first chamber (131), a regulating chamber (132) and a second chamber (133) formed therein; a first piston assembly (14) dividing the first chamber into two first sub-chambers and provided with a first regulating valve (141), wherein one first sub-chamber (1311) among the two sub-chambers is in communication with the regulating chamber, and the other first sub-chamber (1312) is selectively in communication with the regulating chamber by means of the first regulating valve; and a second piston assembly (15) dividing the second chamber into two second sub-chambers and provided with a second regulating valve (151) by means of which the second sub-chambers are selectively in communication with each other. The stabilizer bar assembly can ensure the reliability of the stabilizer bars on both sides while simplifying the arrangement of an internal passage of the cylinder barrel.

Description

Stabilizer bar assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311235062.6, filed on September 22, 2023, entitled “Stabilizer Bar Assembly and Vehicle,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of automobile manufacturing, and in particular to a stabilizer bar assembly and a vehicle having the stabilizer bar assembly. Background Art

[0004] Currently, in order to suppress body roll during cornering, all vehicles are equipped with lateral stabilizer bars in both the front and rear suspensions. For off-road vehicles with a higher center of gravity, the stabilizer bar is usually stiffer, resulting in a more pronounced suppression of the difference in rebound travel between the left and right wheels of the suspension, which is detrimental to improving the performance of the off-road vehicle. To this end, a connection / disconnection device is typically added to the middle of the lateral stabilizer bar to enable disconnection during off-road operation. The existing ball screw piston hydraulic cylinder structure is large and inconvenient to arrange, while the electronically controlled shift fork system can only be connected / disconnected on horizontal surfaces and cannot be connected / disconnected during off-road operation. During long-term, high-intensity off-road operation, the shift fork disconnector is prone to water corrosion and failure, resulting in poor reliability and room for improvement.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a stabilizer bar assembly that achieves disconnection and connection of the stabilizer bar assembly by disposing two opposing piston assemblies and disposing a regulating valve in each of the two piston assemblies to switch the on / off state of the internal flow channel. This reduces the radial dimension of the stabilizer bar assembly, facilitates flexible layout of the stabilizer bar assembly, simplifies the external oil circuit, and improves system reliability.

[0007] According to the embodiment of the present application, the stabilizer bar assembly includes: a first stabilizer bar and a second stabilizer bar; a cylinder, in which a first chamber, a regulating chamber and a second chamber are formed; a first piston assembly, which is movably mounted in the first chamber and divides the first chamber into two first sub-chambers, and the first piston assembly is provided with a first regulating valve, one of the two first sub-chambers is connected to the regulating chamber and the other first sub-chamber is selectively connected to the regulating chamber through the first regulating valve, and the first piston assembly is connected to the first stabilizer bar; a second piston assembly, which is movably mounted in the second chamber and divides the second chamber into two second sub-chambers, and the second piston assembly is provided with a second regulating valve for selectively connecting the two second sub-chambers, and the second piston assembly is connected to the second stabilizer bar.

[0008] According to the stabilizer bar assembly of the embodiment of the present application, the first stabilizer bar and the second stabilizer bar are connected and matched by the cylinder, the first piston assembly, and the second piston assembly, and the first regulating valve and the second regulating valve are used to realize the active disconnection or connection between the first stabilizer bar and the second stabilizer bar, thereby reducing the roll when the vehicle turns on a horizontal road, and reducing the suppression of the rebound stroke difference of the left and right wheels of the suspension by the stabilizer bar assembly under off-road conditions, thereby improving off-road performance. At the same time, the first regulating valve and the second regulating valve are both located in the hydraulic cavity and do not need to occupy the external installation space of the cylinder, thereby reducing the radial size of the stabilizer bar assembly, facilitating the layout of the stabilizer bar assembly, and simplifying the external oil circuit, thereby improving system reliability.

[0009] According to the stabilizer bar assembly of the embodiment of the present application, a movable floating piston is provided in the regulating chamber, which divides the regulating chamber into a hydraulic sub-chamber and a pneumatic sub-chamber, and the first regulating valve is used to selectively connect the hydraulic sub-chamber with another first sub-chamber.

[0010] According to the stabilizer bar assembly of the embodiment of the present application, a first limit block is provided in the cylinder, the first limit block is located between the adjusting chamber and the first chamber, the first limit block is provided with a connecting port for connecting the hydraulic sub-chamber with a first sub-chamber, a first built-in flow channel is formed in the first piston assembly, one end of the first built-in flow channel is open in the other first sub-chamber and the other end is open toward the connecting port, and the first regulating valve is used to control the on and off of the first built-in flow channel.

[0011] According to the stabilizer bar assembly of the embodiment of the present application, the first piston assembly includes a first piston, a first valve core and a first rotating shaft. The first piston is sleeved outside the first rotating shaft and divides the first chamber into two first sub-chambers. The first valve core is fixedly connected to the first rotating shaft, and the first valve core is threadedly connected to the inner circumferential wall of the cylinder. One end of the first built-in flow channel is open at the outer circumferential wall of the first rotating shaft, and the other end of the first built-in flow channel passes through the first valve core and is open toward the connecting port at the end of the first valve core. The first rotating shaft is connected to the first stabilizer bar.

[0012] According to the stabilizer bar assembly of the embodiment of the present application, it also includes a hydraulic oil circuit, which includes a first side oil circuit and a second side oil circuit. The first side oil circuit connects the hydraulic sub-chamber with another first sub-chamber, and the second side oil circuit connects the two second sub-chambers. One end of the first side oil circuit connected to the hydraulic sub-chamber is also connected to one second sub-chamber of the two second sub-chambers.

[0013] According to the stabilizer bar assembly of the embodiment of the present application, the first side oil circuit is provided with a first one-way valve, and the first one-way valve is configured to conduct one-way flow from the hydraulic sub-chamber to the other first sub-chamber; the second side oil circuit is provided with a second one-way valve, and the second one-way valve is configured to conduct one-way flow from one second sub-chamber of the two second sub-chambers to the other second sub-chamber.

[0014] According to the stabilizer bar assembly of the embodiment of the present application, a second built-in flow channel is formed in the second piston assembly, both ends of the second built-in flow channel are respectively connected to the two second sub-cavities, and the second regulating valve is used to control the opening and closing of the second built-in flow channel.

[0015] According to the stabilizer bar assembly of the embodiment of the present application, the second piston assembly includes a second piston, a second valve core and a second rotating shaft. The second piston is sleeved outside the second rotating shaft and divides the second chamber into two second sub-chambers. The second valve core is fixedly connected to the second rotating shaft, and the second valve core is threadedly connected to the inner circumferential wall of the cylinder. One end of the second built-in flow channel is open to a second sub-chamber at the outer circumferential wall of the second rotating shaft, and the other end of the second built-in flow channel passes through the second valve core and is open to another second sub-chamber at the end of the second valve core. The second rotating shaft is connected to the second stabilizer bar.

[0016] According to the stabilizer bar assembly of the embodiment of the present application, the adjustment cavity is located between the first cavity and the second cavity.

[0017] The present application also proposes a vehicle.

[0018] According to an embodiment of the present application, a vehicle is provided with any one of the stabilizer bar assemblies described above.

[0019] The vehicle and the stabilizer bar assembly described above have the same advantages as those of the prior art, which will not be described in detail here.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] FIG1 is a system schematic diagram of a first stabilizer bar and a second stabilizer bar of a stabilizer bar assembly in a connected state according to an embodiment of the present application;

[0023] FIG2 is a system schematic diagram of a stabilizer bar assembly in a disconnected state with a first stabilizer bar and a second stabilizer bar according to an embodiment of the present application;

[0024] FIG3 is a system principle diagram of a stabilizer bar assembly according to an embodiment of the present application when the piston is not in the neutral position.

[0025] : Reference numerals: Stabilizer bar assembly 100, first stabilizer bar 11, second stabilizer bar 12, cylinder 13, first chamber 131, one first sub-chamber 1311, another first sub-chamber 1312, regulating chamber 132, floating piston 1321, hydraulic sub-chamber 1322, pneumatic sub-chamber 1323, second chamber 133, one second sub-chamber 1331, another second sub-chamber 1332, first stopper 134, connecting port 1341, second stopper 135, first partition plate 136, second partition plate 137, first piston assembly 14, first regulating valve 141, first piston 142, first valve core 143, first rotating shaft 144, first built-in flow channel 145, second piston assembly 15, second regulating valve 151, second piston 152, second valve core 153, second rotating shaft 154, second built-in flow channel 155, Hydraulic oil circuit 16 , first side oil circuit 161 , second side oil circuit 162 , first one-way valve 1611 , second one-way valve 1621 . DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present application. 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 only used to explain the present application and are not to be construed as limiting the present application.

[0027] The stabilizer bar assembly 100 according to an embodiment of the present application is described below with reference to Figures 1 to 3. It can achieve active disconnection or connection between the first stabilizer bar 11 and the second stabilizer bar 12, reducing the radial dimension of the stabilizer bar assembly 100, facilitating the layout of the stabilizer bar assembly 100, and at the same time, simplifying the external oil circuit to improve system stability.

[0028] As shown in FIG1 , a stabilizer bar assembly 100 according to an embodiment of the present application includes a first stabilizer bar 11 , a second stabilizer bar 12 , a cylinder 13 , a first piston assembly 14 and a second piston assembly 15 .

[0029] A first chamber 131 , a regulating chamber 132 and a second chamber 133 are formed in the cylinder 13 . The first chamber 131 and the second chamber 133 are suitable for filling with oil, and the regulating chamber 132 is suitable for filling with inert gas and / or oil as needed.

[0030] The first piston assembly 14 is movably mounted on the first chamber 131 and divides the first chamber 131 into two first sub-chambers. The first piston assembly 14 is provided with a first regulating valve 141. One of the two first sub-chambers 1311 is connected to the regulating chamber 132 and the other first sub-chamber 1312 is selectively connected to the regulating chamber 132 through the first regulating valve 141. The first piston assembly 14 is connected to the first stabilizer bar 11, that is, the regulating chamber 132 is in a normally connected state with one first sub-chamber 1311, and the regulating chamber 132 is selectively connected with the other first sub-chamber 1312 through the first regulating valve 141. That is to say, a part of the first piston assembly 14 is located in the first chamber 131, dividing the first chamber 131 into two first sub-chambers, and the other part penetrates the cylinder 13 and extends outside the cylinder 13 to be connected to the first stabilizer bar 11. When the first regulating valve 141 is opened, the other first sub-chamber 1312 is connected to the regulating chamber 132, and oil can flow between the two. When the first regulating valve 141 is closed, the other first sub-chamber 1312 is not connected to the regulating chamber 132, and oil cannot flow between the two. As shown in Figures 1 to 3, the two first sub-chambers are spaced apart in the left and right directions, that is, in the axial direction of the cylinder 13, and the first sub-chamber 1311 on the left is in a normally connected state with the regulating chamber 132, and the other first sub-chamber 1312 on the right can be selectively connected to the regulating chamber 132 through the first regulating valve 141.

[0031] The second piston assembly 15 is movably mounted in the second chamber 133 and divides the second chamber 133 into two second sub-chambers. The second piston assembly 15 is provided with a second regulating valve 151 for selectively connecting the two second sub-chambers. The second piston assembly 15 is connected to the second stabilizer bar 12. That is, a portion of the second piston assembly 15 is located in the second chamber 133 to divide the second chamber 133 into two second sub-chambers, and the other portion penetrates the cylinder 13 and extends outside the cylinder 13 to be connected to the second stabilizer bar 12. When the second regulating valve 151 is opened, the two second sub-chambers are connected, and oil can flow between the two second sub-chambers. When the second regulating valve 151 is closed, the two second sub-chambers are not connected, and oil cannot flow between the two second sub-chambers.

[0032] For example, as shown in Figures 1-3, the first piston assembly 14 and the second piston assembly 15 can be coaxially arranged and fixedly connected to the first stabilizer bar 11 and the second stabilizer bar 12 respectively. The connection method can be welding or other methods such as connecting parts. When the left and right sides of the suspension move relative to each other, the first stabilizer bar 11 and the second stabilizer bar 12 rotate in different directions respectively, so that the first piston assembly 14 and the second piston assembly 15 are transmitted in the cylinder 13.

[0033] Specifically, when the first regulating valve 141 and the second regulating valve 151 are both closed, the oil cannot flow between the other first sub-chamber 1312 and the regulating chamber 132, nor can it flow between the two second sub-chambers, and the first piston assembly 14 and the second piston assembly 15 cannot move axially, that is, the connection between the first stabilizer bar 11 and the second stabilizer bar 12 is realized. Conversely, when the first regulating valve 141 and the second regulating valve 151 are both opened, oil flows between the other first sub-chamber 1312 and the regulating chamber 132, and oil also flows between the two second sub-chambers, and the first piston assembly 14 and the second piston assembly 15 can move axially in the cylinder 13, that is, the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state.

[0034] Therefore, when the first stabilizer bar 11 and the second stabilizer bar 12 are in a connected state, the reverse torque generated by the stabilizer bar assembly 100 can resist the rebound of the suspension and reduce the body roll of the vehicle when the vehicle turns. When the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state, the suppression of the rebound travel difference between the left and right wheels of the suspension by the stabilizer bar assembly 100 can be reduced, which is beneficial to improving off-road performance.

[0035] According to the stabilizer bar assembly 100 of the embodiment of the present application, the first stabilizer bar 11 and the second stabilizer bar 12 are connected and matched by the cylinder 13, the first piston assembly 14, and the second piston assembly 15, and the first stabilizer bar 11 and the second stabilizer bar 12 are actively disconnected or connected by the first regulating valve 141 and the second regulating valve 151, thereby reducing the roll when the vehicle turns, and reducing the suppression of the rebound stroke difference of the left and right wheels of the suspension by the stabilizer bar assembly 100 under off-road conditions, thereby improving off-road performance. At the same time, the first regulating valve 141 and the second regulating valve 151 are both located in the cylinder 13 and do not need to occupy the external installation space of the cylinder 13, thereby reducing the radial size of the stabilizer bar assembly 100, facilitating the layout of the stabilizer bar assembly 100, and simplifying the external oil circuit, thereby improving system reliability.

[0036] In some embodiments, a movable floating piston 1321 is disposed within the regulating chamber 132. The floating piston 1321 divides the regulating chamber 132 into a hydraulic sub-chamber 1322 and a pneumatic sub-chamber 1323. A first regulating valve 141 is configured to selectively connect the hydraulic sub-chamber 1322 with the first sub-chamber 1312. In other words, the floating piston 1321 is disposed within the regulating chamber 132 and divides the regulating chamber 132 into the hydraulic sub-chamber 1322 and the pneumatic sub-chamber 1323. Specifically, as shown in Figures 1-3, the floating piston 1321 is disposed within the regulating chamber 132 and is movable axially along the cylinder 13. The pneumatic sub-chamber 1323 is located to the left of the floating piston 1321, and the hydraulic sub-chamber 1322 is located to the right of the floating piston 1321. The hydraulic sub-chamber 1322 is selectively connected to the first sub-chamber 1312 located to the right via the first regulating valve 141.

[0037] The hydraulic sub-chamber 1322 is suitable for filling with oil, while the pneumatic sub-chamber 1323 is suitable for filling with inert gas. The floating piston 1321 can move axially within the regulating chamber 132 to vary the pressure in the hydraulic and pneumatic sub-chambers 1322 and 1323, further promoting the flow of oil. When the first regulating valve 141 is opened and the first and second stabilizer bars 11 and 12 bounce relative to each other, both piston assemblies undergo axial movement. At this time, oil flows between the hydraulic sub-chamber 1322 and the other first sub-chamber 1312. Simultaneously, the gas in the pneumatic sub-chamber 1323 can be compressed or released. This compression or release of the gas in the pneumatic sub-chamber 1323 compensates for the volume change caused by the axial movement of the first piston assembly 14, achieving internal stability. When the first regulating valve 141 is closed, the hydraulic sub-chamber 1322 cannot communicate with the other first sub-chamber 1312, and the pressure in the hydraulic sub-chamber 1322 and the pneumatic sub-chamber 1323 remains stable, and the first stabilizing rod 11 and the second stabilizing rod 12 are relatively fixed.

[0038] In some embodiments, a first stopper 134 is provided in the cylinder 13. The first stopper 134 is located between the regulating chamber 132 and the first chamber 131. Specifically, as shown in FIG1 , the regulating chamber 132 is located on the left side of the first stopper 134, and the first chamber 131 is located on the right side of the first stopper 134. At the same time, as shown in FIG1 , a first partition plate 136 is further provided between the regulating chamber 132 and the first chamber 131. The first partition plate 136 is located on the left side of the first stopper 134 to separate the regulating chamber 132 from the first chamber 131 together with the first stopper 134. The provision of the first stopper 134 can not only be used to separate the regulating chamber 132 from the first chamber 131, but also be used to limit the movement of the first piston assembly 14 in the first chamber 131, that is, to allow the first piston assembly 14 to perform reasonable reciprocating motion in the first chamber 131.

[0039] In the actual design, the first partition plate 136 is fixed in the cylinder 13, and the first limit block 134 can be fixedly installed on the side of the partition plate facing the first cavity 131. The first limit block 134 can be made of elastic material, such as rubber, and can cooperate with the first piston assembly 14 to compensate for the torque loss generated after the first piston assembly 14 moves.

[0040] The first limit block 134 is provided with a connecting port 1341 for connecting the hydraulic sub-chamber 1322 with a first sub-chamber 1311, and a first built-in flow channel 145 is formed in the first piston assembly 14, one end of the first built-in flow channel 145 is open in the other first sub-chamber 1312 and the other end is open toward the connecting port 1341, and the first regulating valve 141 is used to control the on and off of the first built-in flow channel 145, that is, when the first regulating valve 141 is opened and the first stabilizer bar 11 and the second stabilizer bar 12 rotate relative to each other, oil can flow between the other first sub-chamber 1312 and the regulating chamber 132 through the first built-in flow channel 145, wherein a hole structure corresponding to the connecting port 1341 can be provided on the first partition plate 136, so that the oil in the first built-in flow channel 145 can flow from the connecting port 1341 and the corresponding hole structure, thereby realizing the relative rotation of the first stabilizer bar 11 and the second stabilizer bar 12.

[0041] At the same time, it should be noted that a second partition plate 137 and a second limit block 135 are also provided in the cylinder 13. As shown in Figures 1 to 3, the second limit block 135 and the second partition plate 137 are both located between the adjusting chamber 132 and the second chamber 133, and the second limit block 135 is located on the side of the second partition plate 137 facing the second chamber 133, so that the adjusting chamber 132 and the second chamber 133 are effectively separated, and the second limit block 135 can also be made of elastic material, such as rubber. In this way, when the second piston assembly 15 moves in the second chamber 133, the second limit block 135 can play an elastic buffering role for the second piston assembly 15, and can compensate for the torque loss generated after the second piston assembly 15 moves.

[0042] In some embodiments, the first piston assembly 14 includes a first piston 142, a first valve core 143 and a first rotating shaft 144. The first piston 142 is sleeved on the outside of the first rotating shaft 144 and divides the first chamber 131 into two first sub-chambers. The first valve core 143 is fixedly connected to the first rotating shaft 144, and the first valve core 143 is threadedly connected to the inner circumferential wall of the cylinder 13. One end of the first built-in flow channel 145 is open on the outer circumferential wall of the first rotating shaft 144, and the other end of the first built-in flow channel 145 passes through the first valve core 143 and is open at the end of the first valve core 143 toward the connecting port 1341. The first rotating shaft 144 is connected to the first stabilizing bar 11.

[0043] Specifically, as shown in Figures 1 and 2 , in a specific design, the first piston 142 is sleeved outside the middle portion of the first rotating shaft 144, and the right end of the first valve core 143 at least partially extends into the first piston 142. This makes the installation of the first piston 142, the first valve core 143, and the first rotating shaft 144 more compact, and enhances the structural strength of the first piston assembly 14. The first piston 142 seals against the inner circumferential wall of the first chamber 131. At least a portion of the outer circumferential wall of the first piston 142 can be constructed of an elastic material to form a seal between the outer circumferential wall of the first piston 142 and the inner circumferential wall of the cylinder 13, thereby preventing the oil in the other first sub-chamber 1312 and the hydraulic sub-chamber 1322 from flowing through the gap between the first piston 142 and the inner circumferential wall of the first chamber 131. This ensures that the first and second stabilizer bars 11 and 12 do not rotate relative to each other when connected, thereby ensuring the reliability of the stabilizer bar assembly 100.

[0044] As shown in Figure 1, an external thread section is provided on the outer peripheral wall of the first valve core 143, and an internal thread section is provided on the inner peripheral wall of the cylinder 13, so that the first valve core 143 and the cylinder 13 are threadedly connected through the external thread section and the internal thread section, and the first piston 142 can be axially moved in the first chamber 131 through the threaded transmission between the two. Therefore, when the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state, the first valve core 143 can achieve relative movement with the cylinder 13 through the movement of the external thread section relative to the internal thread section, thereby reducing the suppression of the rebound stroke difference between the left and right wheels of the suspension.

[0045] Among them, one end of the first rotating shaft 144 is connected to the first valve core 143, and the other end of the first rotating shaft 144 passes through the cylinder 13 and the other end is connected to the first stabilizing bar 11. As shown in Figure 1, the left end of the first rotating shaft 144 is connected to the right end of the first valve core 143. The connection method can be welding, or it can be connected through other methods such as connecting parts. At the same time, the right end of the first rotating shaft 144 is connected to the first stabilizing bar 11, that is, the rotation of the first stabilizing bar 11 will drive the rotation of the first rotating shaft 144, and then drive the first valve core 143 to rotate. Therefore, when the first stabilizing bar 11 rotates relative to the second stabilizing bar 12, the first rotating shaft 144 drives the first valve core 143 to rotate relative to the cylinder 13, thereby realizing the axial movement of the first piston assembly 14.

[0046] A portion of the first built-in flow channel 145 is located in the first valve core 143 and the other portion is located in the first rotating shaft 144. As shown in Figure 1, the left end of the first built-in flow channel 145 is located in the first valve core 143, and the right end of the first built-in flow channel 145 is located in the first rotating shaft 144. Thus, when the first stabilizer bar 11 and the second stabilizer bar 12 rotate relative to each other, the oil can flow in the first built-in flow channel 145 through the first rotating shaft 144 and the first valve core 143 to realize the flow of oil between the other first sub-chamber 1312 and the regulating chamber 132.

[0047] Specifically, as shown in Figure 1, the overall shape of the first built-in flow channel 145 is T-shaped, the left end of the first built-in flow channel 145 is open at the left end of the first valve core 143, and the right end is radially open at the outer peripheral wall of the first rotating shaft 144. At the same time, the first regulating valve 141 is integrated in the first rotating shaft 144, so that the first regulating valve 141 can share the space in the first rotating shaft 144, thereby improving the utilization rate of the internal space, thereby helping to reduce the overall structural dimensions of the first piston assembly 14 and the stabilizer bar assembly 100.

[0048] In some embodiments, the stabilizer bar assembly 100 further includes a hydraulic oil circuit 16, which includes a first side oil circuit 161 and a second side oil circuit 162. The first side oil circuit 161 connects the hydraulic sub-cavity 1322 with another first sub-cavity 1312, and the second side oil circuit 162 connects the two second sub-cavities. Specifically, the first side oil circuit 161 allows oil to flow from the hydraulic sub-cavity 1322 to another first sub-cavity 1312, or from another first sub-cavity 1312 to the hydraulic sub-cavity 1322. The second side oil circuit 162 allows oil to flow from one second sub-cavity 1331 to another second sub-cavity 1332, or from another second sub-cavity 1332 to one second sub-cavity 1331. Specifically, as shown in Figures 1 and 3, the first side oil circuit 161 and the second side oil circuit 162 are both located outside the cylinder 13, that is, two connecting holes are respectively provided on the outer peripheral wall of the cylinder 13, so that the first side oil circuit 161 and the second side oil circuit 162 are connected to the corresponding chamber through a connecting hole respectively, wherein the hydraulic sub-chamber 1322 and the other first sub-chamber 1312 can circulate oil through the first side oil circuit 161, and the two second sub-chambers can also circulate oil through the second side oil circuit 162.

[0049] In other words, the communication between the hydraulic sub-chamber 1322 and the other first sub-chamber 1312 can be achieved through the cooperation of the first regulating valve 141 and the first built-in flow channel 145 in the cylinder 13, or through the first side oil circuit 161.

[0050] Among them, one end of the first side oil circuit 161 that is connected to the hydraulic sub-chamber 1322 is also connected to one of the second sub-chambers 1331 of the two second sub-chambers, so that the hydraulic sub-chamber 1322 is connected to one of the second sub-chambers 1331 through the first side oil circuit 161. Specifically, as shown in Figure 1, the left end of the first side oil circuit 161 is connected to the hydraulic sub-chamber 1322, and the right end of the second side oil circuit 162 is connected to one of the second sub-chambers 1331. At the same time, the left end of the first side oil circuit 161 is also connected to the right end of the second side oil circuit 162, so that the hydraulic sub-chamber 1322 is connected to one of the second sub-chambers 1331, so that after the first stabilizer bar 11 and the second stabilizer bar 12 move relative to each other, the pressure in the hydraulic sub-chamber 1322 and one of the second sub-chambers 1331 remains balanced, and then the pressure balance between the first chamber 131 and the second chamber 132 is achieved through the hydraulic sub-chamber 1322.

[0051] In some embodiments, as shown in Figures 1 and 3, the first side oil circuit 161 is provided with a first one-way valve 1611, which is configured to unidirectionally conduct from the hydraulic sub-chamber 1322 to the other first sub-chamber 1312, and the second side oil circuit 162 is provided with a second one-way valve 1621, which is configured to unidirectionally conduct from one second sub-chamber 1331 of the two second sub-chambers to the other second sub-chamber 1332. That is, the oil can only flow from the hydraulic sub-chamber 1322 to the other first sub-chamber 1312 through the first side oil circuit 161, and the oil can only flow from one second sub-chamber 1331 to the other second sub-chamber 1332 through the second side oil circuit 162, and cannot flow in the opposite direction. That is, the first one-way valve 1611 and the second one-way valve 1621 are provided to prevent oil backflow and ensure the reliability of piston resetting through the hydraulic oil circuit 16.

[0052] In some embodiments, a second internal flow channel 155 is formed within the second piston assembly 15. The two ends of the second internal flow channel 155 are respectively connected to the two second sub-cavities. The second regulating valve 151 is used to control the opening and closing of the second internal flow channel 155. It is understood that when the second regulating valve 151 opens the second internal flow channel 155, the two second sub-cavities are connected, and oil can flow between the two second sub-cavities. Conversely, when the second regulating valve 151 closes the second internal flow channel 155, the two second sub-cavities are disconnected, and oil cannot flow between the two second sub-cavities.

[0053] Specifically, as shown in FIG. 1 , the right end of the second built-in flow channel 155 opens in one second sub-cavity 1331 , and the second built-in flow channel 155 opens radially in another second sub-cavity 1332 .

[0054] In some embodiments, the second piston assembly 15 includes a second piston 152, a second valve core 153 and a second rotating shaft 154. The second piston 152 is sleeved on the outside of the second rotating shaft 154 and divides the second chamber 133 into two second sub-chambers. The second valve core 153 is fixedly connected to the second rotating shaft 154, and the second valve core 153 is threadedly connected to the inner circumferential wall of the cylinder 13. One end of the second built-in flow channel 155 is open at the outer circumferential wall of the second rotating shaft 154 toward a second sub-chamber 1331, and the other end of the second built-in flow channel 155 passes through the second valve core 153 and is open at the end of the second valve core 153 toward another second sub-chamber 1332. The second rotating shaft 154 is connected to the second stabilizing bar 12.

[0055] Specifically, as shown in Figures 1 and 2, the second piston assembly 15 and the first piston assembly 14 are coaxially arranged along the axial direction of the cylinder 13, and the principles are basically the same. The second piston 152 is located in the second chamber 133 to divide the second chamber 133 into two second sub-chambers, and the second built-in flow channel 155 selectively connects or disconnects the two second sub-chambers. When the second regulating valve 151 opens the second built-in flow channel 155, the two second sub-chambers are connected. When the second regulating valve 151 closes the second built-in flow channel 155, the two second sub-chambers are not connected.

[0056] In the specific design, the second piston 152 is sleeved outside the middle portion of the second rotating shaft 154, and the right end of the second valve core 153 at least partially extends into the second piston 152, thereby making the installation of the second piston 152, the second valve core 153, and the second rotating shaft 154 more compact, and enhancing the structural strength of the second piston assembly 15. The second piston 152 is sealed against the inner circumferential wall of the second chamber 133. At least a portion of the outer circumferential wall of the second piston 152 can be constructed of an elastic material to form a sealing fit between the outer circumferential wall of the second piston 152 and the inner circumferential wall of the cylinder 13, thereby preventing the oil in the two second sub-chambers from flowing through the gap between the second piston 152 and the inner circumferential wall of the second chamber 133, ensuring that the first stabilizer bar 11 and the second stabilizer bar 12 do not rotate relative to each other when connected, thereby ensuring the reliability of the stabilizer bar assembly 100.

[0057] As shown in Figure 1, an external thread section is provided on the outer peripheral wall of the second valve core 153, and an internal thread section is provided on the inner peripheral wall of the cylinder 13, so that the second valve core 153 and the cylinder 13 are threadedly connected through the external thread section and the internal thread section, and the second piston 152 can be axially moved in the second chamber 133 through the threaded transmission between the two. Therefore, when the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state, the second valve core 153 can achieve relative movement with the cylinder 13 through the movement of the external thread section relative to the internal thread section, thereby reducing the suppression of the rebound stroke difference between the left and right wheels of the suspension.

[0058] Among them, one end of the second rotating shaft 154 is connected to the second valve core 153, and the other end of the second rotating shaft 154 passes through the cylinder 13 and the other end is connected to the second stabilizing bar 12. As shown in Figure 1, the right end of the second rotating shaft 154 is connected to the left end of the first valve core 143. At the same time, the left end of the second rotating shaft 154 is connected to the second stabilizing bar 12, that is, the rotation of the second stabilizing bar 12 will drive the second rotating shaft 154 to rotate, and then drive the second valve core 153 to rotate. Therefore, when the first stabilizing bar 11 rotates relative to the second stabilizing bar 12, the second rotating shaft 154 drives the second valve core 153 to rotate relative to the cylinder 13, thereby realizing axial movement of the second piston assembly 15.

[0059] Among them, a part of the second built-in flow channel 155 is located in the second valve core 153 and the other part is located in the second rotating shaft 154. As shown in Figures 1-2, the right end of the second built-in flow channel 155 is located in the first valve core 143, and the left end of the second built-in flow channel 155 is located in the second rotating shaft 154. Therefore, when the first stabilizer bar 11 and the second stabilizer bar 12 rotate relative to each other, the oil can flow in the second built-in flow channel 155 through the second rotating shaft 154 and the second valve core 153 to realize the flow of oil between the two second sub-cavities.

[0060] Specifically, as shown in Figure 1, the right end of the second built-in flow channel 155 is open at the right end of the second valve core 153, and the left end is radially open at the outer peripheral wall of the second rotating shaft 154. At the same time, the second regulating valve 151 is integrated in the second rotating shaft 154, so that the second regulating valve 151 can share the space in the second rotating shaft 154, thereby maximizing the utilization of the internal space, thereby helping to reduce the overall structural dimensions of the second piston assembly 15 and the stabilizer bar assembly 100.

[0061] In some embodiments, the regulating chamber 132 is located between the first chamber 131 and the second chamber 133. Specifically, as shown in Figures 1-2, the regulating chamber 132 is directly connected to the first chamber 131 through the connection port 1341 of the first limit block 134 to adjust the internal pressure of the first chamber 131 and the second chamber 133. Placing the regulating chamber 132 between the first chamber 131 and the second chamber 133 can reduce the length of the hydraulic oil circuit 16, thereby simplifying the external oil circuit and improving the stability of the stabilizer bar assembly 100. In addition, the positioning of the regulating chamber 132 inside the cylinder 13 can reduce the radial dimension of the stabilizer bar assembly 100, facilitating the layout of the stabilizer bar assembly 100.

[0062] The operating principles of the stabilizer bar assembly 100 in different states according to an embodiment of the present application will be described below with reference to FIG. 1 to FIG. 3 . Specifically, the operating states of the stabilizer bar assembly 100 include a connected state, a disconnected state, and a non-neutral state.

[0063] As shown in Figure 1, the first stabilizer bar 11 and the second stabilizer bar 12 are in a connected state, and the first regulating valve 141 and the second regulating valve 151 are both in a closed state. If the first stabilizer bar 11 jumps up and the second stabilizer bar 12 jumps down at this time, the first valve core 143 and the second valve core 153 will be affected by the first limit block 134 and the second limit block 135 and cannot rotate. On the contrary, they will be affected by the oil in the other first sub-cavity 1312 and the other second sub-cavity 1332 and cannot move left and right. The first stabilizer bar 11 and the second stabilizer bar 12 are in a connected state, and the stabilizer bar assembly 100 is in a locked state.

[0064] As shown in Figure 2, the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state, the first regulating valve 141 and the second regulating valve 151 are both in an open state, the two first sub-cavities are connected, and the two second sub-cavities are connected. When the first stabilizer bar 11 and the second stabilizer bar 12 jump up and down, the first stabilizer bar 11 drives the first rotating shaft 144 and the first valve core 143 to rotate, and the second stabilizer bar 12 drives the second rotating shaft 154 and the second valve core 153 to rotate. The gas in the pneumatic sub-chamber 1323 drives the floating piston 1321 to adjust the volume of the hydraulic sub-chamber 1322. The first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state and can move relative to each other.

[0065] As shown in FIG3 , the piston of the stabilizer bar assembly 100 is in a non-neutral state. Specifically, the stabilizer bar assembly 100 is installed on the suspension, and the first stabilizer bar 11 and the second stabilizer bar 12 are in a disconnected state. When the suspensions on the left and right sides rebound, such as the second stabilizer bar 12 jumping up with the left suspension and the first stabilizer bar 11 jumping down with the right suspension, the control unit sends a connection instruction for the first stabilizer bar 11 and the second stabilizer bar 12, the first regulating valve 141 and the second regulating valve 151 are closed, and the first chamber 131 and the second chamber 133 are no longer connected. However, at this time, the first piston 142 and the second piston 152 are both in a non-neutral state, and the oil in a first sub-chamber 1311 can pass through the first side oil passage 1 61. The first one-way valve 1611 flows to the other first sub-chamber 1312, and the oil in one second sub-chamber 1331 can flow to the other second sub-chamber 1332 through the second side oil passage 162 and the second one-way valve 1621 until the first piston 142 reaches the first limit block 134 and the second piston 152 reaches the second limit block 135. Since the oil is incompressible, the second piston 152 cannot move to the other second sub-chamber 1332 after the first regulating valve 141 and the second regulating valve 151 are closed, and the first piston 142 cannot move to the other first sub-chamber 1312. The first stabilizer bar 11 and the second stabilizer bar 12 are in a connected state, and the stabilizer bar assembly 100 is in a locked state.

[0066] 1 as an example, the above-mentioned first sub-cavity 1311 is the one located on the left side of the two first sub-cavities, the other first sub-cavity 1312 is the one located on the right side of the two first sub-cavities, and the above-mentioned second sub-cavity 1331 is the one located on the right side of the two second sub-cavities, and the other second sub-cavity 1332 is the one located on the left side of the two second sub-cavities.

[0067] The present application also discloses a vehicle.

[0068] According to the vehicle of the embodiment of the present application, including the stabilizer bar assembly 100 of any of the above-mentioned embodiments, the first stabilizer bar 11 and the second stabilizer bar 12 are automatically connected or disconnected by arranging the first regulating valve 141 and the second regulating valve 151 in the cylinder 13, while the radial dimension of the stabilizer bar assembly 100 is reduced, which is beneficial to the layout of the stabilizer bar assembly 100, and further simplifies the external oil circuit, thereby improving the stability of the stabilizer bar assembly 100.

[0069] 1. In the description of the present application, 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", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application.

[0070] 2. In the description of this application, "first feature" and "second feature" may include one or more of these features.

[0071] 3. In the description of this application, “plurality” means two or more.

[0072] 4. In the description of this application, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but via another feature therebetween.

[0073] 5. In the description of this application, “above”, “above” and “above” a first feature to 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.

[0074] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0075] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stabilizer bar assembly, wherein: include: a first stabilizer bar and a second stabilizer bar; A cylinder barrel, wherein a first chamber, a regulating chamber, and a second chamber are formed in the cylinder barrel; a first piston assembly, which is movably mounted on the first chamber and divides the first chamber into two first sub-chambers, the first piston assembly is provided with a first regulating valve, one of the two first sub-chambers is connected to the regulating chamber and the other first sub-chamber is selectively connected to the regulating chamber through the first regulating valve, and the first piston assembly is connected to the first stabilizing rod; The second piston assembly is movably mounted in the second chamber and divides the second chamber into two second sub-chambers. The second piston assembly is provided with a second regulating valve for selectively connecting the two second sub-chambers. The second piston assembly is connected to the second stabilizing rod.

2. The stabilizer bar assembly according to claim 1, wherein: A movable floating piston is provided in the regulating chamber, and the floating piston divides the regulating chamber into a hydraulic sub-chamber and a pneumatic sub-chamber. The first regulating valve is used to selectively connect the hydraulic sub-chamber with the other first sub-chamber.

3. The stabilizer bar assembly according to claim 2, wherein: A first limit block is provided in the cylinder, and the first limit block is located between the regulating chamber and the first chamber. The first limit block is provided with a connecting port for connecting the hydraulic sub-chamber with the one first sub-chamber. A first built-in flow channel is formed in the first piston assembly, and one end of the first built-in flow channel is open in the other first sub-chamber and the other end is open toward the connecting port. The first regulating valve is used to control the opening and closing of the first built-in flow channel.

4. The stabilizer bar assembly according to claim 3, wherein: The first piston assembly includes a first piston, a first valve core and a first rotating shaft, the first piston is sleeved outside the first rotating shaft and divides the first chamber into two first sub-chambers, the first valve core is fixedly connected to the first rotating shaft, and the first valve core is threadedly connected to the inner circumferential wall of the cylinder, one end of the first built-in flow channel is open at the outer circumferential wall of the first rotating shaft, and the other end of the first built-in flow channel passes through the first valve core and is open toward the connecting port at the end of the first valve core, and the first rotating shaft is connected to the first stabilizing rod.

5. The stabilizer bar assembly according to claim 2-4, wherein: It also includes a hydraulic oil circuit, which includes a first side oil circuit and a second side oil circuit. The first side oil circuit connects the hydraulic sub-chamber with the other first sub-chamber, and the second side oil circuit connects the two second sub-chambers. One end of the first side oil circuit connected to the hydraulic sub-chamber is also connected to one second sub-chamber of the two second sub-chambers.

6. The stabilizer bar assembly according to claim 5, wherein: The first side oil circuit is provided with a first one-way valve, and the first one-way valve is configured to conduct one-way from the hydraulic sub-chamber to the other first sub-chamber; The second side oil circuit is provided with a second one-way valve, and the second one-way valve is configured to conduct one-way from one second sub-cavity to the other second sub-cavity of the two second sub-cavities.

7. The stabilizer bar assembly according to claims 1-6, wherein: A second built-in flow channel is formed in the second piston assembly, and two ends of the second built-in flow channel are respectively connected to the two second sub-cavities, and the second regulating valve is used to control the opening and closing of the second built-in flow channel.

8. The stabilizer bar assembly according to claim 7, wherein: The second piston assembly includes a second piston, a second valve core and a second rotating shaft. The second piston is sleeved outside the second rotating shaft and divides the second chamber into two second sub-chambers. The second valve core is fixedly connected to the second rotating shaft, and the second valve core is threadedly connected to the inner circumferential wall of the cylinder. One end of the second built-in flow channel opens toward a second sub-chamber at the outer circumferential wall of the second rotating shaft, and the other end of the second built-in flow channel passes through the second valve core and opens toward another second sub-chamber at the end of the second valve core. The second rotating shaft is connected to the second stabilizing rod.

9. The stabilizer bar assembly according to claims 1-8, wherein: The regulating chamber is located between the first chamber and the second chamber.

10. A vehicle, wherein: A stabilizer bar assembly according to any one of claims 1 to 9 is provided.

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