Stabilizer bar assembly and vehicle

Abstract

The stabilizer bar assembly comprises a stabilizer bar and a hydraulic mechanism, the stabilizer bar comprises a first bar body and a second bar body which can rotate relatively, and the hydraulic mechanism is used for selectively connecting the first bar body and the second bar body into a whole or can rotate relatively. The hydraulic mechanism comprises a cylinder body connected with the first rod body and a piston assembly connected with the second rod body, the piston assembly is arranged in the cylinder body and is in transmission connection with the cylinder body through a thread structure, an insertion structure is arranged between the second rod body and the cylinder body, and the insertion structure allows the second rod body to rotate relative to the cylinder body. According to the stabilizer bar assembly, the first bar body and the second bar body can be connected into a whole on a smooth road surface, the first bar body and the second bar body can be controlled to be disconnected on a cross-country or bumpy road surface, and the cross-country trafficability of whole vehicle driving is improved. In addition, the plug-in mounting structure can provide radial support for the thread transmission structure, and good bearing capacity can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a stabilizer bar assembly. Simultaneously, the utility model also relates to a vehicle provided with the stabilizer bar assembly. Background Art

[0002] To improve vehicle ride comfort, suspension stiffness is typically designed low, which compromises vehicle stability. To address this issue, a lateral stabilizer bar structure is incorporated into the suspension system to increase suspension roll stiffness and reduce vehicle body roll. The primary function of the lateral stabilizer bar is to prevent excessive lateral roll during cornering, minimizing vehicle balance. When the vehicle body tilts laterally relative to the road, one side of the frame moves closer to the spring support, causing the stabilizer bar's distal end to move upward relative to the frame. The other side of the frame moves away from the spring support, causing the corresponding stabilizer bar distal end to move downward relative to the frame. This deflects the longitudinal sections of the stabilizer bar in different directions during tilt. The torsional internal torque generated by the stabilizer bar's twisting suppresses deformation of the suspension springs, thereby reducing lateral tilt and preventing vehicle rollover during sharp turns, which could result in casualties.

[0003] However, the stabilizer bar also limits the height difference between the left and right wheels. This results in the wheels being at different heights when navigating uneven surfaces during off-road driving. This height difference translates into torsional forces within the stabilizer bar, hindering the wheels' free up-and-down movement and causing the vehicle to skid, reducing its off-road capabilities and maneuverability. Furthermore, when navigating obstacles, the vehicle can tilt, resulting in poor ride comfort and even causing occupants to be jolted or knocked around due to inertia. Utility Model Content

[0004] In view of this, the present invention aims to provide a stabilizer bar assembly to improve the off-road passability of a vehicle.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A stabilizer bar assembly, comprising:

[0007] A stabilizing rod, comprising a first rod body and a second rod body capable of relative rotation;

[0008] a hydraulic mechanism, the hydraulic mechanism being used to selectively connect the first rod body and the second rod body into one body, or to enable relative rotation thereof;

[0009] In which, the hydraulic mechanism includes a cylinder body connected to the first rod body, and a piston assembly connected to the second rod body. The piston assembly is arranged in a hydraulic chamber formed by the cylinder body and is transmission-connected to the cylinder body through a threaded structure. An insertion structure is provided between the second rod body and the cylinder body, and the insertion structure allows the second rod body to rotate relative to the cylinder body.

[0010] Furthermore, the insertion structure includes a slot provided at one end of the second rod body, and a latch provided on the cylinder body, wherein the latch extends along the moving direction of the piston assembly and is inserted into the slot;

[0011] An oil groove is provided on the outer wall of the latch and extends to the free end along the length direction of the latch.

[0012] Furthermore, the cylinder includes a cylinder body having the hydraulic chamber, and a barrel connected to the cylinder body and disposed in the hydraulic chamber;

[0013] The piston assembly includes a piston fixed on the second rod body and a transmission body. The piston abuts against the inner wall of the cylinder body. The threaded structure is provided between the transmission body and the cylinder body.

[0014] Furthermore, the piston and the transmission body are both connected to the second rod body via splines.

[0015] Furthermore, the thread structure includes an external thread provided on the transmission body and an internal thread provided in the cylinder;

[0016] A gap is formed between the tooth top of the external thread and the tooth bottom of the internal thread, and between the tooth top of the internal thread and the tooth bottom of the external thread, so as to allow oil to pass through.

[0017] Furthermore, a radially outwardly protruding shoulder is provided on the second rod body, and the piston assembly is sleeved on the second rod body, with one end of the piston assembly abutting against the shoulder and the other end abutting against a nut threaded on the second rod body.

[0018] Furthermore, relative to the end connected to the first rod, the other end of the cylinder is provided with a through hole for the second rod to pass through;

[0019] The through hole has a supporting portion abutting against the second rod body, and a spacing portion forming a gap with the second rod body, and a sealing structure is provided between the spacing portion and the second rod body.

[0020] Furthermore, the piston assembly divides the hydraulic chamber into a first chamber and a second chamber, and the first chamber is close to the first rod body;

[0021] The hydraulic mechanism includes a hydraulic valve block having an oil circuit, and a connecting pipe communicating with the second cavity and one end of the oil circuit, and the other end of the oil circuit communicating with the first cavity, and a first control valve and a second control valve are provided on the oil circuit, wherein the first control valve can control the oil circuit to flow in one direction into the first cavity when power is off, and the second control valve can control the oil circuit to flow in one direction into the second cavity when power is off; and / or,

[0022] The connecting pipe is provided with a first pressure detecting portion, and the oil circuit is provided with a second pressure detecting portion.

[0023] Furthermore, an oil hole communicating with the hydraulic chamber is provided in the middle of the cylinder body, and the hydraulic mechanism further comprises a balance pipe communicating with the oil circuit and the oil hole, and the oil hole can be blocked when the piston assembly is in the middle position; and / or,

[0024] The hydraulic mechanism further includes an accumulator communicated with the oil circuit and the balance pipe.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The stabilizer bar assembly described in the present invention is provided with a first rod body and a second rod body that can rotate relative to each other, and a hydraulic mechanism for selectively connecting the first rod body and the second rod body as a whole, or enabling relative rotation thereof. As a result, the first rod body and the second rod body can be connected as a whole on a flat road surface, thereby improving the running stability of the vehicle. At the same time, the first rod body and the second rod body can be controlled to be disconnected and relatively rotated when driving off-road or on bumpy roads, thereby improving the off-road passability of the entire vehicle. Moreover, by providing an insert structure between the second rod body and the cylinder body that allows the two to rotate relative to each other, radial support can be provided for the threaded transmission structure, which can have a better load-bearing capacity, thereby improving the transmission effect between the piston assembly and the cylinder body.

[0027] Furthermore, the insertion structure comprises a slot provided at one end of the second rod and a latch provided on the cylinder body, resulting in a simple structure and ease of design and implementation. Furthermore, by providing an oil groove on the outer wall of the latch extending along its length to its free end, the second rod can be inserted into the latch with minimal clearance while still being able to slide relative to the cylinder body, providing good lubrication for both. By providing the cylinder body with a cylinder body and a barrel having a hydraulic chamber, and the piston assembly comprising a piston fixed to the second rod and a transmission body, the piston assembly not only facilitates the division of the hydraulic chamber into two parts, but also facilitates the transmission connection between the piston assembly and the cylinder body via a threaded structure.

[0028] Secondly, the piston and transmission body are both connected to the second rod body via splines, which ensures good connection reliability and durability, and allows both to withstand greater loads. By creating gaps between the external thread crest and internal thread root, and vice versa, oil can flow through, lubricating the thread structure and improving transmission smoothness.

[0029] Furthermore, by providing a stop shoulder on the second rod, it is easy to install the piston assembly on the second rod, and it is also easy to disassemble and install the piston assembly for maintenance and replacement. By providing a support portion at the through hole that abuts the second rod, this position can be used as a support point for the threaded structure, thereby improving the transmission stability of the bolt structure.

[0030] Furthermore, by providing a first control valve and a second control valve in the oil circuit, and enabling the first control valve to control the oil circuit to flow unidirectionally into the first cavity when power is off, and the second control valve to control the oil circuit to flow unidirectionally into the second cavity when power is off, the stability of the piston assembly in the neutral position can be improved, thereby enhancing the connection security between the first and second rod bodies. The provision of an accumulator and a balancing pipe facilitates the return of the piston assembly to the neutral position, blocking the oil hole. At the same time, the accumulator can absorb the energy of the instantaneous pressure increase and replenish the oil during the movement of the piston assembly to the neutral position.

[0031] Another object of the present invention is to provide a vehicle, in which the stabilizer bar assembly as described above is provided.

[0032] The vehicle of the present invention, by providing the stabilizer bar assembly as described above, can not only connect the first and second rods into one body on flat roads, thereby improving the vehicle's operating stability, but can also control the first and second rods to disconnect and rotate relative to each other when driving off-road or on bumpy roads, thereby improving the vehicle's off-road maneuverability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic structural diagram of a stabilizer bar assembly according to an embodiment of the present utility model;

[0035] Figure 2 This is a schematic structural diagram of the stabilizer bar assembly according to an embodiment of the present utility model from another perspective;

[0036] Figure 3 for Figure 2 Cross-sectional view along line AA;

[0037] Figure 4 for Figure 3 Enlarged view of part B;

[0038] Figure 5 This is a structural diagram of the cylinder body according to an embodiment of the present utility model;

[0039] Figure 6 This is a cross-sectional view of the first rod body and the cylinder body in an assembled state according to an embodiment of the present utility model;

[0040] Figure 7 This is a structural diagram of the first cover according to an embodiment of the present utility model;

[0041] Figure 8 This is a structural diagram of the cylinder according to an embodiment of the present utility model;

[0042] Figure 9 This is a structural diagram of the second rod body and piston assembly according to an embodiment of the present utility model;

[0043] Figure 10 This is a cross-sectional view of the second rod and piston assembly according to an embodiment of the present utility model;

[0044] Figure 11 This is a structural diagram of the second rod according to an embodiment of the present utility model;

[0045] Figure 12 This is a schematic structural diagram of the piston according to an embodiment of the present utility model;

[0046] Figure 13 This is a schematic structural diagram of the transmission body according to an embodiment of the present utility model;

[0047] Figure 14 This is a system principle diagram of the stabilizer bar assembly described in an embodiment of the present utility model.

[0048] Description of reference numerals:

[0049] 1. First rod; 2. Second rod; 3. Cylinder body; 4. Hydraulic valve block; 5. Connecting pipe; 6. Balancing pipe; 7. First longitudinal arm; 8. Second longitudinal arm; 9. Piston; 10. Cylinder body; 11. Transmission body; 12. First sealing ring; 13. Second sealing ring; 14. First control valve; 15. Second control valve; 16. First pressure sensor; 16. Second pressure sensor; 18. Oil circuit; 19. Accumulator; P, First cavity; Q, Second cavity; M, Oil groove; K, Clearance; N, Spline;

[0050] 201, slot; 202, shoulder; 301, first cover; 3011, latch; 302, body; 3021, oil hole; 303, second cover; 3031, support portion; 3032, spacing portion;

[0051] 1001, internal thread. DETAILED DESCRIPTION

[0052] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0055] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0056] This embodiment relates to a stabilizer bar assembly, which primarily includes a stabilizer bar and a hydraulic mechanism. The stabilizer bar includes a first rod 1 and a second rod 2 that are capable of relative rotation, and the first rod 1 and the second rod 2 are used to connect to the left and right wheels. The hydraulic mechanism is used to selectively connect the first rod 1 and the second rod 2 into a single body or enable relative rotation.

[0057] Among them, the hydraulic mechanism includes a cylinder body connected to the first rod body 1, and a piston assembly connected to the second rod body 2. The piston assembly is arranged in a hydraulic chamber formed by the cylinder body and is connected to the cylinder body through a threaded structure. An insert structure is provided between the second rod body 2 and the cylinder body, and the insert structure allows the second rod body 2 to rotate relative to the cylinder body.

[0058] The stabilizer bar assembly of this embodiment comprises a first rod 1 and a second rod 2 that are capable of relative rotation, and a hydraulic mechanism for selectively connecting the first rod 1 and the second rod 2 as a single unit or enabling relative rotation. This allows the first rod 1 and the second rod 2 to be connected as a single unit on smooth surfaces, thereby improving the vehicle's operational stability. Simultaneously, the first rod 1 and the second rod 2 can be controlled to disconnect and rotate relative to each other during off-road or bumpy driving, further enhancing the vehicle's off-road maneuverability. Furthermore, the provision of an interposer structure between the second rod 2 and the cylinder body that allows relative rotation between the two provides radial support for the threaded transmission structure, resulting in improved load-bearing capacity and enhanced transmission efficiency between the piston assembly and the cylinder body.

[0059] Based on the above overall introduction, an exemplary structure of the stabilizer bar assembly of this embodiment is referred to as Figures 1 to 4 As shown in FIG, similar to the prior art, the first link 1 of this embodiment is connected to the suspension control arm via a ball stud at the end of the first trailing arm 7, while the second link 2 is connected to the suspension control arm via a ball stud on the second trailing arm 8. Furthermore, the middle portions of the first and second links 1 and 2 are hingedly connected to the vehicle body or frame via an integrated structure consisting of a rubber bushing and a clamp.

[0060] The structures of the first and second longitudinal arms 7, 8, and their connections to the first and second rods 1, 2, can be referenced in the prior art. Furthermore, the first longitudinal arm 7 and the first rod 1, as well as the second longitudinal arm 8 and the second rod 2, are preferably connected by a spline N, and secured to the first rod 1 via bolts threaded onto the first rod 1. Furthermore, the structures of the clamps and rubber bushings can be referenced in the prior art and will not be further described here.

[0061] In this embodiment, Figure 4 and 5 As shown in , as a preferred embodiment, the cylinder of this embodiment includes a cylinder body 3 having a hydraulic chamber, and a barrel 10 connected to the cylinder body 3 and disposed within the hydraulic chamber. Furthermore, the piston assembly includes a piston 9 fixed to the second rod 2 and a transmission body 11. The piston 9 abuts the inner wall of the cylinder body 3, and a threaded structure is disposed between the transmission body 11 and the barrel 10. This structure not only facilitates the piston assembly to divide the hydraulic chamber into two parts, but also facilitates the transmission connection between the piston assembly and the cylinder body via the threaded structure.

[0062] Among them, such as Figure 5As shown in FIG, for ease of assembly, as a preferred embodiment, the cylinder body 3 of this embodiment includes a main body portion 302 located in the middle, and a first cover 301 and a second cover 303 located at both ends of the main body portion 302. In addition, the first rod 1 is specifically connected to the first cover 301, and the cylinder 10 is specifically connected to the first cover 301 and the main body portion 302. Figure 6 and Figure 7 As shown in FIG, the first cover 301 of this embodiment is in the shape of a pot cover, and an outwardly protruding block is provided at one end of the first cover 301, and a connecting groove is provided on the block. One end of the first rod 1 is inserted into the connecting groove and is welded to the block.

[0063] In addition, combined Figure 4 and Figure 7 As shown in FIG, as a preferred embodiment, the insertion structure of this embodiment includes a slot 201 provided at one end of the second rod 2, and a latch 3011 provided on the cylinder body. The latch 3011 extends along the moving direction of the piston assembly and is inserted into the slot 201. In addition, an oil groove M is provided on the outer wall of the latch 3011 and extends along its length to the free end. Figure 7 As shown in , the latch 3011 of this embodiment is specifically provided on the first cover 301 and located in the middle thereof.

[0064] The insertion structure of this embodiment comprises a slot 201 provided at one end of the second rod 2 and a latch 3011 provided on the cylinder body. The structure is simple and easy to design and implement. Furthermore, an oil groove M extending along the length of the latch 3011 to its free end is provided on the outer wall of the latch. This ensures that the second rod 2 can still slide relative to the cylinder body after being inserted into the latch 3011 with minimal clearance K, providing good lubrication for both.

[0065] It should be noted that, in addition to providing the latch 3011 on the first cover 301 and the slot 201 on the second rod 2 , the latch 3011 can also be provided on the second rod 2 and the slot 201 can be provided on the first cover 301 .

[0066] In addition, if Figure 8 In a preferred embodiment, the barrel 10 is cylindrical, and is connected to the main body 302 and the first cover 301 by laser welding. Figures 8 to 10As shown in , the thread structure of this embodiment includes an external thread provided on the transmission body 11, and an internal thread 1001 provided in the cylinder 10. Moreover, a gap K is formed between the tooth top of the external thread and the tooth bottom of the internal thread 1001, as well as between the tooth top of the internal thread 1001 and the tooth bottom of the external thread, to allow oil to pass through. Here, by forming a gap K between the tooth top of the external thread and the tooth bottom of the internal thread 1001, as well as between the tooth top of the internal thread 1001 and the tooth bottom of the external thread, the thread structure can be lubricated, thereby improving transmission smoothness.

[0067] Among them, as a preferred embodiment, Figure 11 As shown in FIG, the second rod body 2 of this embodiment is straight and the slot 201 is provided at Figure 11 The right end shown in the state is provided with an external thread at the right end of the second rod body 2. At the same time, a spline N connected to the second longitudinal arm 8 is provided at the left end of the second rod body 2. In addition, in order to facilitate the fixing of the piston assembly on the second rod body 2, continue to refer to Figure 4 、 Figures 9 to 11 As shown in FIG, as a preferred embodiment, a radially outwardly projecting shoulder 202 is provided on the second rod 2. The piston assembly is sleeved onto the second rod 2, with one end of the piston assembly abutting the shoulder 202 and the other end abutting a nut threaded onto the second rod 2. This structure facilitates installation of the piston assembly on the second rod 2 and also facilitates assembly and disassembly for maintenance and replacement. Of course, other conventional structures can also be used to secure the piston assembly to the second rod 2.

[0068] In addition, as a preferred embodiment, the piston 9 and the transmission body 11 of this embodiment are connected to the second rod body 2 through a spline N, so that they can have better connection reliability and durability, and can enable both to withstand a larger load. Figures 11 to 13 As shown in FIG, a spline N is provided on the second rod body 2 adjacent to the external thread, and correspondingly, a spline N is also provided on the piston 9 and the transmission body 11. Figure 12 As shown in , the piston 9 of this embodiment specifically includes a large diameter portion and a small diameter portion, wherein the spline N is provided on the small diameter portion. At the same time, a sealing groove is provided on the outer peripheral surface of the large diameter portion of the piston 9 to install a sealing ring that abuts against the inner wall of the cylinder.

[0069] The structure of the transmission body 11 is shown in FIG. Figure 13 As shown in , it is cylindrical in shape, with a sleeve hole for sleeve on the second rod body 2, and a spline N in the sleeve hole. At the same time, an internal thread 1001 is provided on the outer wall of the transmission body 11 to cooperate with the cylinder 10. In addition, as Figure 4 and Figure 5As shown in FIG, relative to the end connected to the first rod 1, the other end of the cylinder body is provided with a through hole for the passage of the second rod 2. The through hole has a support portion 3031 that abuts the second rod 2, and a spacing portion 3032 that forms a gap with the second rod 2. A sealing structure is provided between the spacing portion 3032 and the second rod 2.

[0070] Among them, Figure 4 As shown in , as a preferred embodiment, the sealing structure of this embodiment includes a first sealing ring 12, a second sealing ring 13, and an oil seal, arranged sequentially along the direction toward the hydraulic chamber. Furthermore, the first sealing ring 12 can specifically employ a single-lip metal skeleton dust ring commonly used in the prior art, the second sealing ring 13 can employ a double-lip sealing ring commonly used in the prior art, and the oil seal can employ a K-type Tecon seal. These components are all existing structures used in the art and will not be described in detail here. Furthermore, to improve sealing performance, the splines N of the second rod body 2, the contact surface between the shoulder 202 and the piston 9, and the external threaded portion are all coated with glue. Finally, the sealing ring of the piston 9 is assembled.

[0071] In addition, combined Figure 1 and Figure 14 As shown in , the piston assembly of this embodiment divides the hydraulic chamber into a first chamber P and a second chamber Q, with the first chamber P being close to the first rod body 1. The hydraulic mechanism includes a hydraulic valve block 4 having an oil circuit 18, and a connecting pipe 5 communicating with the second chamber Q and one end of the oil circuit 18, with the other end of the oil circuit 18 communicating with the first chamber P. A first control valve 14 and a second control valve 15 are provided on the oil circuit 18. Furthermore, the first control valve 14 can control the oil circuit 18 to flow in one direction into the first chamber P when the power is off, and the second control valve 15 can control the oil circuit 18 to flow in one direction into the second chamber Q when the power is off. The first control valve 14 and the second control valve 15 can be two-position, two-way normally closed valves with a pilot structure as in the prior art.

[0072] By providing the first control valve 14 and the second control valve 15 on the oil circuit 18, and enabling the first control valve 14 to control the oil circuit 18 to flow unidirectionally into the first cavity P when the power is off, and the second control valve 15 to control the oil circuit 18 to flow unidirectionally into the second cavity Q when the power is off, the stability of the piston assembly in the neutral position can be improved, thereby improving the connection firmness between the first rod body 1 and the second rod body 2.

[0073] As another further embodiment, a first pressure detection part is provided on the connecting pipe 5, and a second pressure detection part is provided on the oil circuit 18, wherein the first pressure detection part and the second pressure detection part can both adopt pressure sensors commonly used in the prior art, and are respectively referred to as "first pressure sensor 16" and "second pressure sensor 16," and their technology is mature and easy to apply and implement.

[0074] In addition, combined Figure 5 and Figure 9 As shown in , as a further embodiment, an oil hole 3021 connected to the hydraulic chamber is provided in the middle of the cylinder body, and the hydraulic mechanism also includes a balance pipe 6 connected to the oil circuit 18 and the oil hole 3021, and when the piston assembly is in the middle position, the oil hole 3021 can be blocked. As another embodiment, the hydraulic mechanism also includes an accumulator 19 connected to the oil circuit 18 and the balance pipe 6. In this embodiment, by providing the accumulator 19 and the balance pipe 6, it is convenient for the piston assembly to return to the middle position to block the oil hole 3021. At the same time, the accumulator 19 can replenish oil during the process of the piston assembly moving to the middle position. And as Figure 14 As shown in FIG, preferably, an accumulator 19, a balance pipe 6, and a first pressure sensor 16 and a second pressure sensor 17 are provided at the same time.

[0075] Based on the above overall description, by setting the above stabilizer bar assembly, when the vehicle is driving normally or turning on a paved road, the first control valve 14 and the second control valve 15 are not energized and are in a "normally closed state" (the first control valve 14 and the second control valve 15 are only unidirectional to allow oil to flow into the first cavity P or the second cavity Q, and are closed in the opposite direction). In addition, the piston 9 is in the middle position of the cylinder (such as Figure 4 As shown in FIG5 , the sealing ring on the piston 9 just blocks the oil hole 3021 on the cylinder body that is connected to the balance pipe 6. At this time, the first cavity P and the second cavity Q are closed, and the piston 9 is locked in the middle position by the oil pressure and cannot move left and right in the cylinder body. The first rod body 1 and the second rod body 2 are in a connected state. The two are connected as a whole, which can realize the function of a common stabilizer bar, ensure the smoothness of the vehicle's driving, and prevent the vehicle from rolling over.

[0076] When the vehicle is in off-road mode, power is supplied to first and second control valves 14, 15, establishing a bidirectional flow. The oil in first and second cavities P, Q, can flow freely between them, allowing piston 9 to move left and right. At this point, first and second rods 1, 2 are disconnected. The relative rotation of first and second rods 1, 2 is converted into lateral movement of piston 9 through the threaded structure. This decoupling allows the first and second rods 1, 2 to rotate relative to each other without interfering with each other, increasing the tire's maximum drop and improving the vehicle's overall maneuverability.

[0077] When the first and second control valves 14 and 15 are de-energized, even if the piston 9 is not in the neutral position, the oil hole 3021 in the cylinder body connected to the balancing pipe 6 is not sealed, and oil can still flow through the balancing pipe 6 between the first chamber P and the second chamber Q. When the piston 9 reaches the neutral position, the sealing ring on the piston 9 seals the oil hole 3021 in the cylinder body connected to the balancing pipe 6. At this time, the oil in the first chamber P and the second chamber Q is sealed, the piston 9 is locked in the neutral position and cannot move, and the first rod 1 and the second rod 2 are connected.

[0078] Therefore, regardless of whether the vehicle's road surface is smooth or the tire heights are consistent, the first and second rod bodies 1 and 2 can be switched from a disconnected state to a connected state at any time, rather than having to wait until the vehicle reaches a smooth surface and the piston 9 reaches the neutral position before switching states. This greatly enhances the product's practicality. Furthermore, compared to ball screw transmissions, threaded structures offer greater load-bearing capacity, improved manufacturing processability, and improved cost-effectiveness. Furthermore, the insertion structure and the provision of the support portion 3031 in the through-hole provide superior radial support for the threaded structure, improving transmission stability and further enhancing the performance of the stabilizer bar assembly.

[0079] In addition, this embodiment also relates to a vehicle, in which the stabilizer bar assembly as described above is provided.

[0080] The vehicle of this embodiment, by providing the stabilizer bar assembly as described above, can not only connect the first and second rods 1 and 2 as a whole on smooth roads, thereby improving the vehicle's operating stability, but can also control the first and second rods 1 and 2 to disconnect and rotate relative to each other when driving off-road or on bumpy roads, thereby improving the vehicle's off-road maneuverability.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stabilizer bar assembly, characterized in that: include: A stabilizing rod, comprising a first rod body (1) and a second rod body (2) capable of relative rotation; A hydraulic mechanism, the hydraulic mechanism being used to selectively connect the first rod body (1) and the second rod body (2) into one body, or to enable relative rotation thereof; The hydraulic mechanism comprises a cylinder body connected to the first rod body (1), and a piston assembly connected to the second rod body (2); the piston assembly is arranged in a hydraulic cavity formed by the cylinder body and is connected to the cylinder body through a threaded structure; and an insertion structure is provided between the second rod body (2) and the cylinder body, and the insertion structure allows the second rod body (2) to rotate relative to the cylinder body.

2. The stabilizer bar assembly according to claim 1, characterized in that: The insertion structure comprises a slot (201) provided at one end of the second rod (2), and a latch (3011) provided on the cylinder body, wherein the latch (3011) extends along the moving direction of the piston assembly and is inserted into the slot (201); An oil groove (M) is provided on the outer wall of the latch (3011) and extends along its length to the free end.

3. The stabilizer bar assembly according to claim 1, characterized in that: The cylinder comprises a cylinder body (3) having the hydraulic chamber, and a barrel (10) connected to the cylinder body (3) and arranged in the hydraulic chamber; The piston assembly comprises a piston (9) fixed on the second rod body (2) and a transmission body (11); the piston (9) abuts against the inner wall of the cylinder body (3); and the threaded structure is provided between the transmission body (11) and the cylinder body (10).

4. The stabilizer bar assembly according to claim 3, characterized in that: The piston (9) and the transmission body (11) are both connected to the second rod body (2) via a spline (N).

5. The stabilizer bar assembly according to claim 3, characterized in that: The thread structure includes an external thread provided on the transmission body (11), and an internal thread (1001) provided in the cylinder (10); A gap (K) is formed between the tooth top of the external thread and the tooth bottom of the internal thread (1001), and between the tooth top of the internal thread (1001) and the tooth bottom of the external thread, for oil to pass through.

6. The stabilizer bar assembly according to claim 1, characterized in that: The second rod body (2) is provided with a radially outwardly protruding shoulder (202), the piston assembly is sleeved on the second rod body (2), and one end of the piston assembly abuts against the shoulder (202), and the other end abuts against a nut screwed onto the second rod body (2).

7. The stabilizer bar assembly according to claim 1, characterized in that: Relative to the end connected to the first rod (1), the other end of the cylinder is provided with a through hole for the second rod (2) to pass through; The through hole has a supporting portion (3031) abutting against the second rod body (2), and a spacing portion (3032) forming a gap with the second rod body (2), and a sealing structure is provided between the spacing portion (3032) and the second rod body (2).

8. The stabilizer bar assembly according to any one of claims 1 to 7, characterized in that: The piston assembly divides the hydraulic chamber into a first chamber (P) and a second chamber (Q), and the first chamber (P) is close to the first rod (1); The hydraulic mechanism comprises a hydraulic valve block (4) having an oil circuit (18), and a connecting pipe (5) communicating with the second cavity (Q) and one end of the oil circuit (18), and the other end of the oil circuit (18) is communicated with the first cavity (P), and a first control valve (14) and a second control valve (15) are provided on the oil circuit (18), wherein the first control valve (14) can control the oil circuit (18) to flow in one direction into the first cavity (P) when power is off, and the second control valve (15) can control the oil circuit (18) to flow in one direction into the second cavity (Q) when power is off; and / or, The connecting pipe (5) is provided with a first pressure detecting portion, and the oil circuit (18) is provided with a second pressure detecting portion.

9. The stabilizer bar assembly according to claim 8, characterized in that: An oil hole (3021) communicating with the hydraulic chamber is provided in the middle of the cylinder body, the hydraulic mechanism further comprises a balance pipe (6) communicating with the oil circuit (18) and the oil hole (3021), and the oil hole (3021) can be blocked when the piston assembly is in the middle position; and / or, The hydraulic mechanism further includes an accumulator (19) in communication with the oil circuit (18) and the balance pipe (6).

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

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