Stabilizer bar and vehicle

Abstract

The stabilizer bar comprises a torsion bar, an adjusting rod, a power cylinder, a piston rod assembly, a first pipeline, a second pipeline and a power pump, and one end of the adjusting rod and one end of the torsion bar are oppositely and coaxially arranged; the power cylinder is provided with a closed cavity, and the cavity extends along an arc line and is fixedly connected with the torsion bar; one end of the piston rod assembly is located in the cavity and divides the cavity into a first cavity and a second cavity which are not communicated with each other, the other end of the piston rod assembly extends out of the cavity and is connected with the adjusting rod, and the piston rod assembly is slidably connected with the cavity in the extending direction of the cavity; the first pipeline communicates with the first cavity, and the second pipeline communicates with the second cavity; the power pump communicates with the first pipeline and the second pipeline so as to push the piston rod assembly to rotate relative to the power cylinder along an arc line and drive the adjusting rod to rotate relative to the torsion rod. In this way, the response speed and precision of the roll angle rigidity of the stabilizer bar can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a stabilizer bar and a vehicle. Background Technology

[0002] As a key component of a car's suspension system, the stabilizer bar's core function is to adjust the anti-roll performance of the front and rear wheel sets. When the vehicle body tilts laterally, this device maintains the vehicle's dynamic balance through a preset torsional stiffness. In existing technologies, the stabilizer bar is rigidly connected to the frame and lacks rotational freedom, preventing the system from automatically adjusting the roll stiffness according to actual driving conditions. Furthermore, the response speed and accuracy of the roll stiffness also affect the vehicle's handling, safety, and comfort. Therefore, improving the response speed and accuracy of the roll stiffness has become an urgent problem to be solved. Utility Model Content

[0003] The main technical problem addressed by this application is to provide a stabilizer bar and vehicle that can improve the response speed and accuracy of the stabilizer bar's roll stiffness.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a stabilizing rod, comprising: a torsion bar; an adjusting rod, one end of which is opposite to and coaxially arranged with one end of the torsion bar; a power cylinder having a closed cavity extending along an arc and fixedly connected to the torsion bar; a piston rod assembly, one end of which is located in the cavity, dividing the cavity into a first cavity and a second cavity that are not interconnected, and the other end extending out of the cavity and fixedly connected to the adjusting rod, the piston rod assembly being slidably connected to the cavity along the extending direction of the cavity; a first pipe and a second pipe, the first pipe connecting to the first cavity for supplying liquid to the first cavity, and the second pipe connecting to the second cavity for supplying liquid to the second cavity; a power pump, connected to the first pipe and the second pipe, for adjusting the pressure of the first cavity and the second cavity to drive the piston rod assembly to rotate relative to the power cylinder along an arc, and to drive the adjusting rod to rotate relative to the torsion bar.

[0005] The power pump includes a first power pump and a second power pump. The first power pump is connected to the first pipeline, and the second power pump is connected to the second pipeline. The first power pump and the second power pump are used to adjust the pressure of the first cavity and the second cavity, respectively.

[0006] The stabilizer bar also includes a control unit, which is electrically connected to the power pump and is used to control the power pump.

[0007] The piston rod assembly includes: a connecting rod, which has an arc-shaped structure, surrounds the adjusting rod and is coaxially arranged with the adjusting rod, with a first end of the connecting rod extending into the cavity and a second end of the connecting rod fixedly connected to the adjusting rod; and a diaphragm, located at the first end of the connecting rod, for dividing the cavity into a first cavity and a second cavity.

[0008] The stabilizer bar further includes a support base with a first end and a second end disposed opposite to each other. The first end is fixedly connected to the torsion bar, and the second end is rotatably connected to the adjusting rod. The support base has a through groove on its inner side, and the power cylinder is fixed in the through groove. The first pipe passes through the support base and communicates with the first cavity, and the second pipe passes through the support base and communicates with the second cavity.

[0009] The stabilizer bar further includes a dust cover, which is movably connected to one of the second end of the support base and the adjusting rod, and fixedly connected to the other of the second end and the adjusting rod. The dust cover and the support base together form a mounting cavity, and the end of the adjusting rod near the torsion bar is located in the mounting cavity.

[0010] The stabilizer bar further includes a fixed base, which is fixedly connected to the first end of the support base and the torsion bar.

[0011] The stabilizer bar is provided with a plurality of power cylinders and a plurality of piston rod assemblies. The power cylinders and the piston rod assemblies correspond one-to-one. The plurality of power cylinders are coaxially arranged. The plurality of piston rod assemblies are arranged at intervals and one end of the plurality of piston rod assemblies is connected. The first pipe is connected to the first cavity of the plurality of power cylinders, and the second pipe is connected to the second cavity of the plurality of power cylinders.

[0012] The power cylinder is provided with a first opening and a second opening. The first pipe is connected to a plurality of first branch pipes, and the second pipe is connected to a plurality of second branch pipes. The first branch pipe is connected to the first cavity through the first opening, and the second branch pipe is connected to the second cavity through the second opening.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle, which includes the stabilizer bar described in any of the above-mentioned claims.

[0014] The beneficial effects of this application are as follows: Unlike the prior art, in this application, the torsion bar is fixedly connected to the power cylinder, and the adjusting rod is fixedly connected to the piston rod assembly. The power pump is connected to the first chamber of the power cylinder through a first pipe and to the second chamber through a second pipe. The power pump controls the pressure of the first and second chambers respectively. The pressure difference between the first and second chambers drives the piston rod assembly to rotate relative to the torsion bar, and then the piston rod assembly drives the adjusting rod to rotate relative to the torsion bar. In this application, the pressure of the two chambers is adjusted separately. On the one hand, it increases the rate at which a pressure difference is formed between the two chambers, thereby improving the response speed of the adjusting rod. On the other hand, when one of the first and second chambers fails, the other chamber can still push the piston rod assembly, increasing the tolerance space for adjusting the roll angle stiffness, thereby improving the safety of the stabilizer bar. Furthermore, the pressure of both the first and second chambers is variable, increasing the adjustment range of the pressure difference between the first and second chambers, thereby improving the range and accuracy of the stabilizer bar roll angle stiffness. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0016] Figure 1 This is a structural schematic diagram of one embodiment of the stabilizer bar of this application;

[0017] Figure 2 yes Figure 1 Exploded view of the middle stabilizer bar;

[0018] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of the stabilizer bar along the AA' direction;

[0019] Figure 4 yes Figure 1 Schematic diagram of the structure of the medium-power pump;

[0020] Figure 5 yes Figure 1 Schematic diagram of the middle adjusting rod;

[0021] Figure 6 yes Figure 1 Schematic diagram of the middle support base;

[0022] Figure 7 yes Figure 6 A schematic diagram of the structure of the central support from another perspective;

[0023] Figure 8 yes Figure 1 A schematic diagram of the structure of the power cylinder. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] See Figures 1 to 3 The stabilizer bar 1 includes a torsion bar 10, an adjusting rod 20, a power cylinder 30, a piston rod assembly 40, a first pipe 510, a second pipe 520, and a power pump 60.

[0026] One end of the adjusting rod 20 is opposite to and coaxially arranged with one end of the torsion bar 10. The power cylinder 30 is provided with a closed cavity 310. The cavity 310 extends along an arc and is fixedly connected to the torsion bar 10. One end of the piston rod assembly 40 is located inside the cavity 310, dividing the cavity 310 into a first cavity 311 and a second cavity 312 that are not connected to each other. The other end extends to the outside of the cavity 310 and is fixedly connected to the adjusting rod 20. The piston rod assembly 40 and the cavity 310 are slidably connected along the extension direction of the cavity 310.

[0027] Specifically, a power cylinder 30 is provided between the torsion bar 10 and the adjusting rod 20. One end of the piston rod assembly 40 extends into the first chamber 311 of the power cylinder 30. The piston rod assembly 40 is provided in the first chamber 311, while the second chamber 312 does not contain the piston rod assembly 40. The other end of the piston rod assembly 40 is connected to the adjusting rod 20. When the pressure in the first chamber 311 is greater than the pressure in the second chamber 312, the pressure difference between the first chamber 311 and the second chamber 312 pushes the piston rod assembly 40 to rotate in the first direction X, where the first direction X is the extension direction of the chamber 310. The piston rod assembly 40 drives the adjusting rod 20 to rotate in the first direction X. When the pressure in the second chamber 312 is greater than the pressure in the first chamber 311, the pressure difference between the first chamber 311 and the second chamber 312 pushes the piston rod assembly 40 to rotate in the opposite direction of the first direction X. The piston rod assembly 40 drives the adjusting rod 20 to rotate in the opposite direction of the first direction X.

[0028] The first pipe 510 is connected to the first cavity 311 and is used to deliver liquid to the first cavity 311. The second pipe 520 is connected to the second cavity 312 and is used to deliver liquid to the second cavity 312. The power pump 60 is connected to the first pipe 510 and the second pipe 520 and is used to adjust the pressure of the first cavity 311 and the second cavity 312 to push the piston rod assembly 40 to rotate relative to the power cylinder 30 along an arc and drive the adjusting rod 20 to rotate relative to the torsion rod 10.

[0029] Specifically, the power pump 60 is connected to both the first pipe 510 and the second pipe 520. The first pipe 510 and the second pipe 520 are connected to the first cavity 311 and the second cavity 312, respectively. The power pump 60 transmits liquid into the first cavity 311 through the first pipe 510 to adjust the pressure of the first cavity 311. The power pump 60 transmits liquid into the second cavity 312 through the second pipe 520 to adjust the pressure of the second cavity 312. The piston rod assembly 40 and the adjusting rod 20 are rotated in the first direction X or the opposite direction of the first direction X to realize the rotation of the adjusting rod 20 relative to the torsion bar 10, thereby adjusting the tilt angle stiffness of the stabilizer bar 1. During the adjustment of the roll stiffness of stabilizer bar 1, the power pump 60 simultaneously adjusts the pressure in the first chamber 311 and the second chamber 312. For example, while increasing the pressure in the first chamber 311, the pressure in the second chamber 312 is decreased. By simultaneously controlling the two chambers 310, the speed at which the pressure difference between the first chamber 311 and the second chamber 312 is established is increased, thereby increasing the response speed of the piston rod assembly 40 and the adjustment rod 20, and thus increasing the response speed of the stabilizer bar 1 in adjusting the roll stiffness.

[0030] In this application, the torsion bar 10 is fixedly connected to the power cylinder 30, and the adjusting rod 20 is fixedly connected to the piston rod assembly 40. The power pump 60 is connected to the first chamber 311 of the power cylinder 30 through the first pipe 510 and to the second chamber 312 through the second pipe 520. The power pump 60 controls the pressure of the first chamber 311 and the second chamber 312 respectively. The pressure difference between the first chamber 311 and the second chamber 312 causes the piston rod assembly 40 to rotate relative to the torsion bar 10, which in turn causes the adjusting rod 20 to rotate relative to the torsion bar 10. In this application, the pressure of the two chambers 310 can be adjusted separately. The stability bar 1 has several advantages. First, it increases the rate at which a pressure difference is formed between the two chambers 310, thereby improving the response speed of the adjusting rod 20. Second, when one of the chambers 310 (first chamber 311 and second chamber 312) fails, the other chamber 310 can still push the piston rod assembly 40, increasing the tolerance space for adjusting the tilt angle stiffness and thus improving the safety of the stability bar 1. Third, the pressure of both the first chamber 311 and the second chamber 312 is variable, increasing the adjustment range of the pressure difference between the first chamber 311 and the second chamber 312, thereby improving the range and accuracy of the tilt angle stiffness of the stability bar 1.

[0031] See Figure 4 The power pump 60 includes a first power pump 610 and a second power pump 620. The first power pump 610 is connected to the first pipe 510, and the second power pump 620 is connected to the second pipe 520. The first power pump 610 and the second power pump 620 are used to adjust the pressure of the first cavity 311 and the second cavity 312, respectively.

[0032] Specifically, the first power pump 610 delivers liquid to the first cavity 311 through the first pipe 510 to regulate the pressure inside the first cavity 311, and the second power pump 620 delivers liquid to the second cavity 312 through the second pipe 520 to regulate the pressure inside the second cavity 312. The first power pump 610 and the second power pump 620 achieve independent control of the pressure inside the first cavity 311 and the second cavity 312, avoiding pressure interference caused by the same power pump 60 controlling the first cavity 311 and the second cavity 312 at the same time.

[0033] In one embodiment, the stabilizer bar 1 further includes a control unit (not shown). The control unit is electrically connected to the power pump 60 and is used to control the power pump 60.

[0034] Specifically, the control unit generates corresponding control information based on the vehicle's real-time operating conditions and transmits the control information to the power pump 60, controlling the power pump 60 to perform corresponding operations and adjust the flow rate or velocity of the power pump 60, thereby adjusting the roll stiffness of the stabilizer bar 1. For example, when the vehicle is traveling on an uneven road surface, the control unit generates corresponding control information, which transmits information to the power pump 60 to reduce the roll stiffness. The power pump 60 adjusts the pressure of the first chamber 311 and the second chamber 312, thereby reducing the roll stiffness of the stabilizer bar 1.

[0035] In one embodiment, the control unit includes an electronic control unit or a vehicle control unit. The electronic control unit transmits control information to the power pump 60 to control the flow rate or velocity of the power pump 60 and adjust the pressure of the first chamber 311 and the second chamber 312. Alternatively, the vehicle control unit generates dynamic control information based on the dynamic operating conditions of the vehicle, and the power pump 60 performs different operations based on the control information to achieve dynamic changes in the roll stiffness of the stabilizer bar 1.

[0036] See Figure 1 , Figure 3 and Figure 5 The piston rod assembly 40 includes a connecting rod 410 and a diaphragm 420. The connecting rod 410 has an arc-shaped structure, surrounds the adjusting rod 20, and is coaxially arranged with the adjusting rod 20. The first end 411 of the connecting rod 410 extends into the cavity 310, and the second end 412 of the connecting rod 410 is fixedly connected to the adjusting rod 20. The diaphragm 420 is located at the first end 411 of the connecting rod 410 and is used to divide the cavity 310 into a first cavity 311 and a second cavity 312.

[0037] Specifically, the diaphragm 420 is located inside the cavity 310, dividing the cavity 310 into a first cavity 311 and a second cavity 312 that are not connected to each other. The pressure difference between the first cavity 311 and the second cavity 312 acts on the diaphragm 420. Since the diaphragm 420 is connected to the first end 411 of the connecting rod 410, the movement of the diaphragm 420 drives the connecting rod 410 to rotate around the extension direction of the power cylinder 30. Since the connecting rod 410 surrounds the adjusting rod 20 and is fixedly connected to the adjusting rod 20, the connecting rod 410 drives the adjusting rod 20 to rotate.

[0038] In one embodiment, the diaphragm 420 is made of stainless steel or titanium alloy, which gives the diaphragm 420 high pressure resistance and improves the service life of the diaphragm 420.

[0039] See Figure 1 , Figure 6 and Figure 7 The stabilizer bar 1 also includes a support base 70. The support base 70 has a first end 71 and a second end 72 that are arranged opposite to each other. The first end 71 is fixedly connected to the torsion bar 10, and the second end 72 is rotatably connected to the adjusting rod 20. The inner side of the support base 70 is provided with a through groove 710, and the power cylinder 30 is fixed in the through groove 710. The first pipe 510 passes through the support base 70 and communicates with the first cavity 311, and the second pipe 520 passes through the support base 70 and communicates with the second cavity 312.

[0040] Specifically, the power cylinder 30 is fixedly connected to the support base 70, the first end 71 of the support base 70 is fixedly connected to the torsion bar 10, the piston rod assembly 40 is rotatably connected to the power cylinder 30, and the piston rod assembly 40 is fixedly connected to the adjusting rod 20. When the piston rod assembly 40 rotates relative to the power cylinder 30, the support base 70 provides support for the power cylinder 30 to prevent the power cylinder 30 from sliding or shifting relative to the torsion bar 10, which would affect the accuracy of the side tilt angle stiffness of the stabilizer bar 1.

[0041] See Figure 7 In one embodiment, the support base 70 is provided with a first opening 720 and a second opening 730 that communicate with the through groove 710, so that the first pipe 510 passes through the first opening 720 to communicate with the first cavity 311, and the second pipe 520 passes through the second opening 730 to communicate with the second cavity 312.

[0042] See Figure 6 In one embodiment, the support base 70 is provided with a fixing hole 740, and a locking member (not shown) passes through the fixing hole 740 to install the support base 70 on the vehicle body or subframe. The locking member can be a bolt or a rivet.

[0043] Continue reading Figure 5 and Figure 6The stabilizer bar 1 also includes a dust cover 80. The dust cover 80 is movably connected to one of the second end 72 of the support base 70 and the adjusting rod 20, and is fixedly connected to the other of the second end 72 and the adjusting rod 20. The dust cover 80 and the support base 70 together form a mounting cavity 750, and the end of the adjusting rod 20 near the torsion bar 10 is located in the mounting cavity 750.

[0044] Specifically, in one application scenario, the dust cover 80 is movably connected to the second end 72 of the support base 70 and fixedly connected to the adjusting rod 20. When the adjusting rod 20 rotates relative to the support base 70, the dust cover 80 rotates relative to the support base 70 to protect the mounting cavity 750 of the support base 70 and prevent dust, water and other impurities from entering the mounting cavity 750.

[0045] In another scenario, the dust cover 80 is movably connected to the adjusting rod 20 and fixedly connected to the second end 72 of the support base 70. When the adjusting rod 20 rotates relative to the support base 70, the dust cover 80 rotates relative to the adjusting rod 20, which also protects the mounting cavity 750.

[0046] Continue reading Figure 5 In one embodiment, an adjustment rod mounting hole 21 is provided at the end of the adjustment rod 20 away from the dust cover 80, and a locking member passes through the adjustment rod mounting hole 21 and is connected to the stabilizer rod.

[0047] Continue reading Figure 2 The stabilizer bar 1 also includes a fixed seat 90, which is fixedly connected to the first end 71 of the support seat 70 and the torsion bar 10.

[0048] Specifically, the fixed seat 90 is fixedly connected to the support seat 70 and to the torsion bar 10, thereby achieving a fixed connection between the support seat 70 and the torsion bar 10. The fixed seat 90 and the torsion bar 10 are fixedly connected by welding, riveting, threading, etc., to enhance the stability of the connection between the fixed seat 90 and the torsion bar 10.

[0049] In one embodiment, the fixed base 90 and the support base 70 surround and seal the mounting cavity 750, further protecting the mounting cavity 750 of the support base 70 and preventing dust, water and other impurities from entering the mounting cavity 750.

[0050] In one embodiment, a torsion bar 10 is provided with a torsion bar mounting hole 11 at the end away from the fixed base 90, and a locking member passes through the torsion bar mounting hole 11 and is connected to the stabilizer bar tie rod.

[0051] Continue reading Figure 2The stabilizer bar 1 is provided with multiple power cylinders 30 and multiple piston rod assemblies 40. The power cylinders 30 and the piston rod assemblies 40 correspond one-to-one. The multiple power cylinders 30 are coaxially arranged, and the multiple piston rod assemblies 40 are arranged at intervals. One end of the multiple piston rod assemblies 40 is connected. The first pipe 510 is connected to the first cavity 311 of the multiple power cylinders 30, and the second pipe 520 is connected to the second cavity 312 of the multiple power cylinders 30.

[0052] Specifically, one end of multiple piston rod assemblies 40 is connected, and the multiple piston rod assemblies 40 can be linked together. Multiple power cylinders 30 correspond one-to-one with the multiple piston rod assemblies 40. The first pipe 510 is connected to the first chamber 311 of the multiple power cylinders 30, and the second pipe 520 is connected to the second chamber 312 of the multiple power cylinders 30. The first chamber 311 and the second chamber 312 of the multiple power cylinders 30 can be linked and controlled respectively. At the same time, the pressure difference between the first chamber 311 and the second chamber 312 in the multiple power cylinders 30 is controlled, so as to realize the simultaneous rotation of the multiple piston rod assemblies 40 and increase the rotation speed of the adjusting rod 20.

[0053] In one embodiment, the number of piston rod assemblies 40 and power cylinders 30 is four, five, six, eight or ten. It should be noted that this application does not limit the number of piston rod assemblies 40 and power cylinders 30.

[0054] See Figure 2 and Figure 8 The power cylinder 30 is provided with a first opening 320 and a second opening 330. The first pipe 510 is connected to a plurality of first branch pipes 5110, and the second pipe 520 is connected to a plurality of second branch pipes 5210. The first branch pipes 5110 are connected to the first cavity 311 through the first opening 320, and the second branch pipes 5210 are connected to the second cavity 312 through the second opening 330.

[0055] Specifically, in the power cylinder 30, the first cavity 311 is connected to the first branch pipe 5110 through the first opening 320, and the first branch pipe 5110 is connected to the first pipe 510. When adjusting the tilt angle stiffness of the stabilizer bar 1, the first pipe 510 first delivers liquid to the first branch pipe 5110, and then the first branch pipe 5110 delivers liquid into the first cavity 311 through the first opening 320. Similarly, in the power cylinder 30, the second cavity 312 is connected to the second branch pipe 5210 through the second opening 330, and the second branch pipe 5210 is connected to the second pipe 520. When adjusting the tilt angle stiffness of the stabilizer bar 1, the second pipe 520 first delivers liquid to the second branch pipe 5210, and then the second branch pipe 5210 delivers liquid into the second cavity 312 through the second opening 330, thereby adjusting the pressure difference between the first cavity 311 and the second cavity 312.

[0056] In one embodiment, the stabilizer bar 1 further includes a bushing 100, which is sleeved on the torsion bar 10 and used to fix the torsion bar 10 to the vehicle body or mounting bracket. Alternatively, the bushing 100 is sleeved on the adjusting bar 20 and used to fix the torsion bar 10 to the vehicle body or mounting bracket.

[0057] This application also protects a vehicle that includes a stabilizer bar 1 as described in any of the above claims. The vehicle includes gasoline-powered vehicles, electric vehicles, hybrid vehicles, and hydrogen fuel cell vehicles, and also includes sedans, SUVs, and commercial vehicles, etc. It should be noted that this application does not limit the type of vehicle. The specific structure of the stabilizer bar 1 is as described above and will not be repeated here.

[0058] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A stabilizer bar, characterized in that, include: Torsion bar; An adjusting rod, one end of which is opposite to and coaxially arranged with one end of the torsion bar; The power cylinder has a closed cavity that extends along an arc and is fixedly connected to the torsion bar. A piston rod assembly has one end located inside the cavity, dividing the cavity into a first cavity and a second cavity that are not connected to each other, and the other end extends outside the cavity and is fixedly connected to the adjusting rod. The piston rod assembly is slidably connected to the cavity along the extending direction of the cavity. A first pipe and a second pipe, wherein the first pipe is connected to the first cavity and is used to deliver liquid to the first cavity, and the second pipe is connected to the second cavity and is used to deliver liquid to the second cavity; A power pump, connected to the first pipe and the second pipe, is used to adjust the pressure of the first chamber and the second chamber to drive the piston rod assembly to rotate relative to the power cylinder along an arc, and to drive the adjusting rod to rotate relative to the torsion bar.

2. The stabilizer bar according to claim 1, characterized in that, The power pumps include: A first power pump and a second power pump, wherein the first power pump is connected to the first pipeline and the second power pump is connected to the second pipeline, and the first power pump and the second power pump are respectively used to adjust the pressure of the first cavity and the second cavity.

3. The stabilizer bar according to claim 1, characterized in that, The stabilizer bar also includes: The control unit is electrically connected to the power pump and is used to control the power pump.

4. The stabilizer bar according to claim 1, characterized in that, The piston rod assembly includes: The connecting rod has an arc-shaped structure, surrounds the adjusting rod, and is coaxially arranged with the adjusting rod. The first end of the connecting rod extends into the cavity, and the second end of the connecting rod is fixedly connected to the adjusting rod. A diaphragm, located at the first end of the connecting rod, is used to divide the cavity into a first cavity and a second cavity.

5. The stabilizer bar according to claim 1, characterized in that, The stabilizer bar also includes: The support base has a first end and a second end that are arranged opposite to each other. The first end is fixedly connected to the torsion bar, and the second end is rotatably connected to the adjusting rod. The inner side of the support base has a through groove, and the power cylinder is fixed in the through groove. The first pipe passes through the support base and communicates with the first cavity, and the second pipe passes through the support base and communicates with the second cavity.

6. The stabilizer bar according to claim 5, characterized in that, The stabilizer bar also includes: The dust cover is movably connected to one of the second end of the support base and the adjusting rod, and is fixedly connected to the other of the second end and the adjusting rod. The dust cover and the support base together form a mounting cavity, and the end of the adjusting rod near the torsion bar is located in the mounting cavity.

7. The stabilizer bar according to claim 5, characterized in that, The stabilizer bar also includes: The fixed base is fixedly connected to the first end of the support base and the torsion bar.

8. The stabilizer bar according to claim 1, characterized in that, The stabilizer bar is provided with a plurality of power cylinders and a plurality of piston rod assemblies. The power cylinders and the piston rod assemblies correspond one-to-one. The plurality of power cylinders are coaxially arranged. The plurality of piston rod assemblies are arranged at intervals and one end of the plurality of piston rod assemblies is connected. The first pipe is connected to the first cavity of the plurality of power cylinders, and the second pipe is connected to the second cavity of the plurality of power cylinders.

9. The stabilizer bar according to claim 1, characterized in that, The power cylinder is provided with a first opening and a second opening. The first pipe is connected to a plurality of first branch pipes, and the second pipe is connected to a plurality of second branch pipes. The first branch pipes are connected to the first cavity through the first opening, and the second branch pipes are connected to the second cavity through the second opening.

10. A vehicle, characterized in that, Includes the stabilizer bar as described in any one of claims 1 to 9.

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