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 having a first chamber, a regulating chamber, and a second chamber formed therein; a first piston assembly, the first piston assembly being movably mounted in the first chamber and dividing the first chamber into two first sub-chambers; the first piston assembly being provided with a first regulating valve; one of the two first sub-chambers being in communication with the regulating chamber, and the other first sub-chamber being selectively connected to the regulating chamber via the first regulating valve; the first piston assembly being connected to the first stabilizer bar; and a second piston assembly being movably mounted in the second chamber and dividing the second chamber into two second sub-chambers; the second piston assembly being provided with a second regulating valve for selectively connecting the two second sub-chambers; the second piston assembly being connected to the second stabilizer bar. The stabilizer bar assembly of the embodiments of the present invention reduces the radial dimension of the stabilizer bar assembly, simplifies the oil circuit, and improves system reliability.

Description

Technical Field

[0001] The present invention 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

[0002] 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. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a stabilizer bar assembly that utilizes two opposing piston assemblies and a regulating valve within each piston assembly to switch the internal flow passage between on and off states, thereby enabling the stabilizer bar assembly to be disconnected or connected. This reduces the radial dimensions of the stabilizer bar assembly, facilitates flexible layout of the stabilizer bar assembly, simplifies external oil circuitry, and improves system reliability.

[0004] According to the stabilizer bar assembly of the embodiment of the invention, it is characterized in that it 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, the first piston assembly is movably mounted in 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, the first piston assembly is connected to the first stabilizer bar; a second piston assembly, 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, and the second piston assembly is connected to the second stabilizer bar.

[0005] According to the stabilizer bar assembly of an embodiment of the present invention, 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 stabilizer bar and the second stabilizer bar are actively disconnected or connected by the first regulating valve and the second regulating valve, thereby reducing the roll when the vehicle turns on a horizontal road, and reducing the suppression of the stabilizer bar assembly on the rebound stroke difference of the left and right wheels of the suspension 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.

[0006] According to some embodiments of the stabilizer bar assembly of the present invention, a movable floating piston is provided in the regulating chamber, the floating piston separates 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 the other first sub-chamber.

[0007] According to some embodiments of the stabilizer bar assembly of the present invention, a first limit block is provided in the cylinder, 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, 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.

[0008] According to some embodiments of the stabilizer bar assembly of the present invention, 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 stabilizer bar.

[0009] According to some embodiments of the present invention, the stabilizer bar assembly further 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. The 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.

[0010] According to some embodiments of the stabilizer bar assembly of the present invention, the first side oil circuit is provided with a first one-way valve, which 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, which is configured to conduct one-way flow from one of the two second sub-chambers to the other second sub-chamber.

[0011] According to the stabilizer bar assembly of some embodiments of the present invention, 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.

[0012] According to some embodiments of the stabilizer bar assembly of the present invention, 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, 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, and the second rotating shaft is connected to the second stabilizer bar.

[0013] According to some embodiments of the stabilizer bar assembly of the present invention, the adjustment cavity is located between the first cavity and the second cavity.

[0014] The invention also discloses a vehicle.

[0015] A vehicle according to an embodiment of the present invention is provided with any one of the above-mentioned stabilizer bar assemblies.

[0016] The advantages of the vehicle and the stabilizer bar assembly described above relative to the prior art are the same and will not be elaborated here.

[0017] 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

[0018] 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:

[0019] Figure 1 is a system principle diagram of a connection state between a first stabilizer bar and a second stabilizer bar of a stabilizer bar assembly according to an embodiment of the present invention;

[0020] Figure 2A system principle diagram of a stabilizer bar assembly according to an embodiment of the present invention in which the first stabilizer bar and the second stabilizer bar are disconnected;

[0021] Figure 3 is a system principle diagram of a stabilizer bar assembly according to an embodiment of the present invention when the piston is not in the neutral position;

[0022] Reference numerals:

[0023] Stabilizer bar assembly 100,

[0024] The first stabilizer bar 11, the second stabilizer bar 12,

[0025] 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,

[0026] The first piston assembly 14, the first regulating valve 141, the first piston 142, the first valve core 143, the first rotating shaft 144, the first built-in flow channel 145,

[0027] The second piston assembly 15, the second regulating valve 151, the second piston 152, the second valve core 153, the second rotating shaft 154, the second built-in flow channel 155,

[0028] 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

[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] 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 indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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 operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] Unless otherwise specified, the front-to-back direction in this application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0033] Reference below Figure 1-Figure 3 The stabilizer bar assembly 100 according to an embodiment of the present invention can realize active disconnection or connection between the first stabilizer bar 11 and the second stabilizer bar 12, thereby 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.

[0034] like Figure 1 As shown, a stabilizer bar assembly 100 according to an embodiment of the present invention 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 .

[0035] 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.

[0036] 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, a portion 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 portion 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. Figure 1-Figure 3 As shown in the figure, the two first sub-chambers are spaced apart in the left and right directions, i.e., in the axial direction of the cylinder 13, and one first sub-chamber 1311 located on the left is in a normally connected state with the regulating chamber 132, and the other first sub-chamber 1312 located on the right can be selectively connected with the regulating chamber 132 through the first regulating valve 141.

[0037] 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.

[0038] For example, Figure 1-Figure 3 As shown, 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 undergo relative movement, 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.

[0039] 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.

[0040] Furthermore, 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 suspension rebound 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 stabilizer bar assembly 100 on the rebound travel difference between the left and right wheels of the suspension can be reduced, which is beneficial to improving off-road performance.

[0041] According to the stabilizer bar assembly 100 of the embodiment of the present invention, 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.

[0042] In some embodiments, a movable floating piston 1321 is provided in 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. The first regulating valve 141 is used to selectively connect the hydraulic sub-chamber 1322 with another first sub-chamber 1312. In other words, the floating piston 1321 is located in the regulating chamber 132 and divides the regulating chamber 132 into a hydraulic sub-chamber 1322 and a pneumatic sub-chamber 1323. Specifically, as Figure 1-Figure 3As shown, the floating piston 1321 is arranged in the regulating chamber 132 and is movable along the axial direction of the cylinder 13, the pneumatic sub-chamber 1323 is located on the left side of the floating piston 1321, and the hydraulic sub-chamber 1322 is located on the right side of the floating piston 1321, and the hydraulic sub-chamber 1322 and another first sub-chamber 1312 located on the right side can be selectively connected through the first regulating valve 141.

[0043] 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.

[0044] In some embodiments, a first stopper 134 is provided in the cylinder 13. The first stopper 134 is located between the regulating cavity 132 and the first cavity 131. Specifically, Figure 1 As shown, the adjustment cavity 132 is located on the left side of the first limit block 134, and the first cavity 131 is located on the right side of the first limit block 134. Figure 1 As shown in FIG, 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 to the left of the first stopper 134 and, together with the first stopper 134, separates the regulating chamber 132 from the first chamber 131. The first stopper 134 is not only used to separate the regulating chamber 132 from the first chamber 131, but also used to limit the movement of the first piston assembly 14 within the first chamber 131, i.e., to ensure that the first piston assembly 14 performs reasonable reciprocating motion within the first chamber 131.

[0045] 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.

[0046] 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.

[0047] 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. Figure 1-Figure 3 As shown in the figure, 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.

[0048] 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.

[0049] Specifically, if Figure 1-Figure 2As shown, 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 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.

[0050] As well as Figure 1 As shown, 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.

[0051] 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 is connected to the first stabilizing rod 11. Figure 1 As shown, 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 by 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.

[0052] A portion of the first built-in flow channel 145 is located in the first valve core 143 and another portion is located in the first rotating shaft 144. Figure 1As shown, 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.

[0053] Specifically, if Figure 1 As shown, 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.

[0054] 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-chamber 1322 with another first sub-chamber 1312, and the second side oil circuit 162 connects the two second sub-chambers. That is, the first side oil circuit 161 can enable oil to flow from the hydraulic sub-chamber 1322 to another first sub-chamber 1312, or from another first sub-chamber 1312 to the hydraulic sub-chamber 1322, and the second side oil circuit 162 can enable oil to flow from one second sub-chamber 1331 to another second sub-chamber 1332, or from another second sub-chamber 1332 to one second sub-chamber 1331. Specifically, as Figure 1 and Figure 3 As shown, 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.

[0055] 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.

[0056] Among them, one end of the first side oil circuit 161 communicating with the hydraulic sub-chamber 1322 is also communicated with one of the second sub-chambers 1331 of the two second sub-chambers, so that the hydraulic sub-chamber 1322 is communicated with one of the second sub-chambers 1331 through the first side oil circuit 161. Specifically, Figure 1 As shown, 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 a second sub-chamber 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.

[0057] In some embodiments, as Figure 1 and Figure 3 As shown, the first side oil circuit 161 is provided with a first one-way valve 1611, and the first one-way valve 1611 is configured to conduct one-way communication from the hydraulic sub-chamber 1322 to the other first sub-chamber 1312. The second side oil circuit 162 is provided with a second one-way valve 1621, and the second one-way valve 1621 is configured to conduct one-way communication 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 configured to prevent oil backflow and ensure the reliability of piston resetting through the hydraulic oil circuit 16.

[0058] 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.

[0059] Specifically, if Figure 1 As shown, 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 .

[0060] 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.

[0061] Specifically, if Figure 1-Figure 2 As shown, 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.

[0062] 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.

[0063] As well as Figure 1 As shown, 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 therebetween. 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.

[0064] 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 is connected to the second stabilizing rod 12. Figure 1 As shown, 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.

[0065] 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. Figure 1-Figure 2 As shown, 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. Thus, 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.

[0066] Specifically, if Figure 1 As shown, 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.

[0067] In some embodiments, the regulating cavity 132 is located between the first cavity 131 and the second cavity 133. Figure 1-Figure 2 As shown, the regulating chamber 132 is directly connected to the first chamber 131 through the connecting port 1341 of the first limit block 134, so as to regulate the internal pressure of the first chamber 131 and the second chamber 133. The regulating chamber 132 is arranged between the first chamber 131 and the second chamber 133, which can reduce the setting length of the hydraulic oil circuit 16, simplify the external oil circuit, and improve the stability of the stabilizer bar assembly 100. The regulating chamber 132 is arranged inside the cylinder 13, which can reduce the radial dimension of the stabilizer bar assembly 100 and facilitate the arrangement of the stabilizer bar assembly 100.

[0068] The following is combined with Figure 1-Figure 3The operating principles of the stabilizer bar assembly 100 in different states according to the embodiment of the present invention are described. Specifically, the operating states of the stabilizer bar assembly 100 include a connected state, a disconnected state, and a non-neutral state.

[0069] Among them, such as Figure 1 As shown, 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.

[0070] like Figure 2 As shown, 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 the two can move relative to each other.

[0071] like Figure 3As shown, 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 161 , the first one-way valve 1611 flows to another first sub-chamber 1312, and the oil in one second sub-chamber 1331 can flow to another 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 another 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 another 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.

[0072] Among them, Figure 1 Taking the structural diagram in as an example, the above-mentioned one 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 one 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.

[0073] The invention also discloses a vehicle.

[0074] According to an embodiment of the present invention, a vehicle includes a stabilizer bar assembly 100 according to any of the above-mentioned embodiments. By arranging a first regulating valve 141 and a second regulating valve 151 in the cylinder 13, automatic connection or disconnection between the first stabilizer bar 11 and the second stabilizer bar 12 is achieved. At the same time, 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.

[0075] 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.

[0076] 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 a first cavity, a regulating cavity, and a second cavity are formed in the cylinder; a first piston assembly, the first piston assembly being movably mounted in the first chamber and dividing the first chamber into two first sub-chambers, the first piston assembly being provided with a first regulating valve, one of the two first sub-chambers being in communication with the regulating chamber, and the other first sub-chamber being selectively in communication with the regulating chamber via the first regulating valve, the first piston assembly being connected to the first stabilizing rod; a second piston assembly, the second piston assembly being movably mounted in the second chamber and dividing the second chamber into two second sub-chambers, the second piston assembly being provided with a second regulating valve for selectively connecting the two second sub-chambers, the second piston assembly being connected to the second stabilizing rod; Wherein, a movable floating piston is provided in the regulating chamber, and the floating piston separates 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.

2. The stabilizer bar assembly according to claim 1, characterized in that: 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 on and off of the first built-in flow channel.

3. The stabilizer bar assembly according to claim 2, characterized in that: 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 stabilizing bar.

4. The stabilizer bar assembly according to claim 1, characterized in that: 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.

5. The stabilizer bar assembly according to claim 4, characterized in that: 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 flow from one second sub-cavity to the other second sub-cavity of the two second sub-cavities.

6. The stabilizer bar assembly according to claim 1, characterized in that: A second built-in flow channel is formed in the second piston assembly. Two ends of the second built-in flow channel are respectively communicated with the two second sub-cavities. The second regulating valve is used to control the opening and closing of the second built-in flow channel.

7. The stabilizer bar assembly according to claim 6, characterized in that: 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 the other second sub-chamber at the end of the second valve core. The second rotating shaft is connected to the second stabilizing bar.

8. The stabilizer bar assembly according to claim 1, characterized in that: The regulating chamber is located between the first chamber and the second chamber.

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

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