Passive hydraulic bushing stabilizer bar structure

Abstract

The utility model discloses a kind of passive hydraulic bushing stabilizer bar structure, which belongs to the technical field of automobile suspension. It mainly includes: stabilizer bar main body, bushing main body, the bushing main body is provided with multiple, it is distributed in different positions of stabilizer bar main body, and is fixedly connected with stabilizer bar main body;The bushing main body includes inner framework assembly, inner lining assembly, passive hydraulic cavity assembly and mounting seat assembly are sequentially fixed to its outside, wherein passive hydraulic cavity assembly is equipped with oil cavity. The utility model is designed by adopting vulcanization integrated sealing structure, relies on the synergistic effect of oil flow damping and rubber elasticity, passive adaptation vibration and impact demand of different road conditions, while improving structural sealing and assembly feasibility, meet the reliability and performance requirements under mass production scene. The utility model is mainly used for the structure optimization of stabilizer bar bushing.

Description

Technical Field

[0001] This utility model belongs to the field of automotive suspension technology, and more specifically, it relates to a passive hydraulic bushing stabilizer bar structure. Background Technology

[0002] In automotive suspension systems, the stabilizer bar system is a critical system. Its main function is to transmit the torque of the stabilizer bar to suppress body roll and balance vehicle handling stability and ride comfort. The passive hydraulic stabilizer bar bushing mentioned in this technology generates damping through the flow of oil in a closed oil chamber. It can passively adapt to different operating conditions without active control, relying on mechanical structure and oil characteristics, making it a preferred solution that balances performance and reliability. Currently, the mainstream stabilizer bar bushing is a rubber bushing. Ordinary rubber bushings lack oil damping structure and rely solely on the elastic deformation of rubber for buffering. Their damping characteristics are fixed, resulting in poor vibration filtering and insufficient roll suppression when facing bumpy roads or high-speed roll conditions. Furthermore, the current production and assembly process for passive hydraulic damping stabilizer bar bushings is unclear, making it difficult to meet the reliability and economic requirements of mass production scenarios. Therefore, there is an urgent need for a passive hydraulic stabilizer bar bushing with optimized structure, feasible assembly, and damping performance adaptable to multiple operating conditions. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a passive hydraulic bushing stabilizer bar structure. By adopting a vulcanized integrated sealing structure design, it passively adapts to the vibration and impact requirements of different road conditions by relying on the synergistic effect of oil flow damping and rubber elasticity, while improving the structural sealing performance and assembly feasibility, and meeting the reliability and performance requirements of mass production scenarios.

[0004] The passive hydraulic bushing stabilizer bar structure includes a stabilizer bar body and a bushing body. Multiple bushing bodies are provided and distributed at different positions on the stabilizer bar body and are fixedly connected to the stabilizer bar body. Each bushing body includes an inner skeleton assembly, and an inner liner assembly, a passive hydraulic cavity assembly, and a mounting base assembly are fixedly fixed to its outer side in sequence. The passive hydraulic cavity assembly is provided with an oil cavity.

[0005] Preferably, the passive hydraulic chamber assembly includes an upper colloid and a lower colloid, and both have a wave-shaped oil chamber formed by a series of trough surfaces and crest surfaces arranged on their inner sides.

[0006] Preferably, the cross-sections of the upper and lower colloids are both semi-circular, and both ends are provided with multiple inserts and insert grooves; the inserts and insert grooves are adapted to each other.

[0007] Preferably, the outer wall of one end of the insert is provided with protrusions on both sides; the insert groove is provided with a slot that matches the protrusion.

[0008] Preferably, the inner skeleton assembly includes an upper skeleton and a lower skeleton, which are arranged symmetrically and wrapped around the outer wall of the stabilizer bar body.

[0009] Preferably, the liner assembly includes an upper liner and a lower liner, one side of which fits against the upper and lower skeletons, and the other side protrudes toward the oil cavity.

[0010] Preferably, the mounting bracket assembly includes an upper body and a lower body, wherein the upper body is attached to the outer wall of the upper adhesive body, and the lower body is attached to the lower adhesive body.

[0011] Preferably, both ends of the upper and lower seats are provided with connecting lugs with through holes, and fastening bolts are embedded in the through holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By adopting a vulcanized integrated sealing structure design, relying on the synergistic effect of oil flow damping and rubber elasticity, it passively adapts to the vibration and impact requirements of different road conditions, while improving the structural sealing performance and assembly feasibility, and meeting the reliability and performance requirements of mass production scenarios.

[0013] 2. Improved passive adaptability under multiple working conditions: The bushing can provide appropriate damping and buffering effects under both small vibrations and large impacts. Compared with ordinary rubber bushings, its vibration filtering performance and ability to suppress roll are greatly improved, taking into account both smoothness and handling stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the connection position between the bushing body and the stabilizer bar body of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a detailed cross-sectional structure and schematic diagram of the present invention; Figure 4 This is a partially enlarged schematic diagram of the present invention.

[0015] In the diagram, 1. Stabilizer bar body; 2. Bushing body; 3. Frame assembly; 31. Upper frame; 32. Lower frame; 4. Inner liner assembly; 41. Upper inner liner; 42. Lower inner liner; 5. Passive hydraulic chamber assembly; 51. Upper colloid; 511. Embedding groove; 512. Slot; 52. Lower colloid; 521. Embedded part; 522. Synapse; 53. Oil chamber; 54. Valley surface; 55. Peak surface; 6. Mounting base assembly; 61. Upper base body; 62. Lower base body; 63. Connecting lug; 64. Through hole. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] like Figures 1 to 4 As shown, a passive hydraulic bushing stabilizer bar structure includes a stabilizer bar body 1 and a bushing body 2. Multiple bushing bodies 2 are provided and distributed at different positions of the stabilizer bar body 1 and are fixedly connected to the stabilizer bar body 1. The bushing body 2 includes an inner skeleton assembly 3, and an inner liner assembly 4, a passive hydraulic cavity assembly 5 and a mounting base assembly 6 are fixedly fixed on its outer side in sequence. The passive hydraulic cavity assembly 5 is provided with an oil cavity 53.

[0018] Component connection and sealing design: The inner frame assembly 3 is inserted through the center of the inner liner and is used to connect with the stabilizer bar body 1 by interference fit; The inner skeleton component 3 and the corresponding inner lining component 4 are integrated through a high-temperature vulcanization bonding process, which ensures the connection strength and stability of the two. The outer side of the inner liner assembly 4 is integrated with the passive hydraulic chamber assembly 5 through vulcanization to form a closed and vertically connected oil chamber 53, which contains a pre-filled amount of hydraulic oil. The outer wall of the passive hydraulic chamber assembly 5 is bonded to the mounting base assembly 6 by vulcanization, and its edges are sealed with a double sealant structure to prevent oil leakage. After the mounting bracket assembly 6 is positioned by the locating pin, it is fastened into a whole by bolts.

[0019] like Figure 3 As shown, the passive hydraulic chamber assembly 5 includes an upper colloid 51 and a lower colloid 52, and both have a wave-shaped oil chamber 53 formed by a series of trough surfaces 54 and crest surfaces 55 arranged sequentially on their inner sides. This arrangement of alternating crest surfaces 55 and trough surfaces 54 within the oil chamber 53 has the following advantages: 1. Optimize fluid flow and damping characteristics Flow regulation: The alternating structure of crest surface 55 and trough surface 54 changes the flow cross-sectional area of ​​oil cavity 53, causing the fluid to exhibit differentiated flow characteristics under different working conditions; Frequency response optimization: During low-frequency vibration, the liquid can flow freely between the crest surface 55 and the trough surface 54, generating greater damping; during high-frequency vibration, the flow is restricted, and the damping is reduced, achieving the ideal vibration isolation characteristics of "high damping at low frequencies and low stiffness at high frequencies". Nonlinear damping: The geometric characteristics of the crest and trough surfaces 54 make the damping force no longer linearly related to the velocity, thus enhancing the adaptability to complex vibrations.

[0020] 2. Enhance structural elasticity and deformation capacity The alternating structure of crest surface 55 and trough surface 54 provides differentiated stiffness in different directions, enabling the rubber component to meet elasticity requirements in multiple directions simultaneously. Controllable deformation: The crest surface 55 and the trough surface 54 serve as stress concentration points, which can guide the deformation to develop in the design direction and avoid excessive local wear; Deformation coordination: The transition area between the crest surface 55 and the trough surface 54 can effectively coordinate the deformation of different parts and prevent stress concentration from causing material damage.

[0021] 3. Improve energy absorption and vibration damping efficiency Fluid resonance: The special cavity formed by the crest surface 55 and the trough surface 54 together with the connecting flow channel constitutes a resonance system, which can greatly improve the energy dissipation capacity; Wave cancellation: The pressure difference formed by the increased pressure at the crest surface 55 and the decreased pressure at the trough surface 54 can effectively cancel out some of the vibration energy; Multimodal response: The alternating wave crest 55 structure can simultaneously cope with vibrations of multiple frequencies, thus expanding the vibration reduction bandwidth.

[0022] 4. Implement fluid management and volume compensation Oil storage in troughs: The trough area 54 can store a certain amount of liquid, providing additional fluid replenishment when the system is subjected to impact, and preventing cavitation. Wave crest guidance: The wave crest structure guides the directional flow of fluid, optimizes the efficiency of the damping channel, and improves the response speed; Volume compensation: When the cavity deforms, the crest surface 55 and the trough surface 54 compensate for the fluid volume change caused by temperature change or mechanical deformation by changing the effective volume. 5. Enhance structural stability and durability Mechanical reinforcement: The undulating structure of the crest surface 55 and the trough surface 54 increases the contact area between the rubber and the skeleton, thereby improving the connection strength; Extended fatigue life: The crest surface 55 and trough surface 54 disperse stress concentration, reduce material fatigue damage, and extend service life; Shape retention: The crest surface 55 and the trough surface 54 support each other, so that the oil cavity 53 maintains a stable assembly shape during long-term use, ensuring consistent performance.

[0023] like Figure 3As shown, both the upper colloid 51 and the lower colloid 52 have semi-circular cross-sections, and both have multiple inserts 521 and insert grooves 511 at their ends; the inserts 521 and insert grooves 511 are adapted to each other. In this way, by cooperating with the inserts 521 and insert grooves 511, the connection strength between the upper colloid 51 and the lower colloid 52 can be further improved on the basis of the vulcanization integration process.

[0024] like Figure 2 As shown, the insert 521 has protrusions 522 on both sides of its outer wall at one end; the insert groove 511 has a slot 512 that matches the protrusions 522. In this way, the connection strength between the insert 521 and the insert groove 511 can be improved by the cooperation of the protrusions 522 and the slot 512, and the connection strength between the upper adhesive 51 and the lower adhesive 52 can be further improved.

[0025] like Figure 2 As shown, the inner skeleton assembly 3 includes an upper skeleton 31 and a lower skeleton 32, which are arranged symmetrically and wrapped around the outer wall of the stabilizer body 1.

[0026] like Figure 2 As shown, the inner liner assembly 4 includes an upper inner liner 41 and a lower inner liner 42, one side of which is fitted against the upper frame 31 and the lower frame 32, while the other side protrudes towards the oil cavity 53. Thus, the inner liner assembly 4 cooperates with the passive hydraulic cavity assembly 5 to form a closed and vertically connected oil cavity 53. Optionally, both the upper liner 41 and the lower liner 42 are made of rubber.

[0027] like Figure 2 As shown, the mounting bracket assembly 6 includes an upper body 61 and a lower body 62, wherein the upper body 61 is attached to the outer wall of the upper adhesive 51, and the lower body 62 is attached to the lower adhesive 52.

[0028] Preferably, both ends of the upper seat 61 and the lower seat 62 are provided with connecting ears 63 with through holes 64, and fastening bolts are embedded in the through holes 64.

[0029] The working process of this application: When a vehicle is subjected to vibration or roll moment during operation, the stabilizer bar transmits the force to the inner frame assembly. At this time, the upper and lower frames undergo relative displacement, which in turn compresses the inner liner assembly. The elastic deformation of the inner liner, combined with the closed oil cavity formed by the upper and lower rubber components, works together. The hydraulic oil within the oil cavity flows along its channels under compression. The viscous damping generated during this flow effectively absorbs and dissipates impact energy. Simultaneously, the rubber-based inner liner assembly and the passive hydraulic cavity assembly further buffer the vibration through their own elastic deformation, significantly reducing the intensity of the vibration transmitted to the vehicle body.

[0030] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A passive hydraulic bushing stabilizer bar structure, comprising a stabilizer bar body (1) and a bushing body (2), characterized in that: The bushing body (2) has multiple components, which are distributed at different positions on the stabilizer bar body (1) and are fixedly connected to the stabilizer bar body (1). The bushing body (2) includes an inner skeleton assembly (3), and an inner liner assembly (4), a passive hydraulic cavity assembly (5) and a mounting base assembly (6) are fixed to its outer side in sequence. The passive hydraulic cavity assembly (5) has an oil cavity (53).

2. The passive hydraulic bushing stabilizer bar structure according to claim 1, characterized in that: The passive hydraulic chamber assembly (5) includes an upper colloid (51) and a lower colloid (52), and both have a wave-shaped oil chamber (53) formed by a series of trough surfaces (54) and crest surfaces (55) arranged on their inner sides.

3. The passive hydraulic bushing stabilizer bar structure according to claim 2, characterized in that: The upper colloid (51) and the lower colloid (52) have semi-circular cross-sections, and both have multiple inserts (521) and insert grooves (511) at their ends; the inserts (521) and insert grooves (511) are adapted to each other.

4. The passive hydraulic bushing stabilizer bar structure according to claim 3, characterized in that: The insert (521) has protrusions (522) on both sides of its outer wall at one end; the insert groove (511) has a slot (512) that is adapted to the protrusions (522).

5. The passive hydraulic bushing stabilizer bar structure according to claim 1, characterized in that: The inner skeleton assembly (3) includes an upper skeleton (31) and a lower skeleton (32), which are arranged symmetrically around the outer wall of the stabilizer body (1).

6. The passive hydraulic bushing stabilizer bar structure according to claim 1, characterized in that: The inner liner assembly (4) includes an upper inner liner (41) and a lower inner liner (42), one side of which is fitted with the upper skeleton (31) and the lower skeleton (32), and the other side protrudes toward the oil cavity (53).

7. The passive hydraulic bushing stabilizer bar structure according to claim 1, characterized in that: The mounting bracket assembly (6) includes an upper body (61) and a lower body (62), wherein the upper body (61) is attached to the outer wall of the upper adhesive (51), and the lower body (62) is attached to the lower adhesive (52).

8. The passive hydraulic bushing stabilizer bar structure according to claim 7, characterized in that: Both ends of the upper seat (61) and the lower seat (62) are provided with connecting ears (63) with through holes (64), and fastening bolts are embedded in the through holes (64).

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