Double bushing assembly

Abstract

The application discloses a double bushing assembly, which comprises a first bushing, a second bushing and a performance ring, wherein the first bushing comprises a first inner tube, a first rubber and a first outer tube, the first rubber is connected between the first inner tube and the first outer tube, and a first groove is formed between the first inner tube, the first outer tube and the first rubber; the second bushing comprises a second inner tube, a second rubber and a second outer tube, the second rubber is connected between the second inner tube and the second outer tube, and a second groove is formed between the second inner tube, the second outer tube and the second rubber; the material of the performance ring is different from that of the first rubber and the second rubber; and the first groove and the second groove form a containing space for containing the performance ring after the first bushing and the second bushing are assembled. The rubber structure and the rubber formula of the first rubber and the second rubber and the structure and the formula of the intermediate performance ring can be adjusted, so that the performance of the product can be quickly adjusted, and diversified requirements can be met.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a double bushing assembly. Background Technology

[0002] In the process of automobile development, as the variety of automobiles increases, the performance requirements for bushing components also become increasingly diverse. The rapid development of the modern automotive industry has led to an ever-expanding range of automobile types and applications, from passenger cars to SUVs, from commercial vehicles to high-performance sports cars. Each type of vehicle places different performance demands on bushing components. For example, passenger cars prioritize comfort and fuel economy, requiring bushings with excellent shock absorption and noise reduction performance; while SUVs and commercial vehicles require greater durability and load-bearing capacity to cope with complex road conditions and heavy loads. Furthermore, high-performance sports cars demand extremely high bushing response speed and precision to ensure vehicle stability and handling during high-speed driving and aggressive maneuvers.

[0003] Existing bushing designs also have certain limitations. Traditional bushings typically employ an integral structure, where the rubber layer and metal components are bonded together through a vulcanization process to form a single unit. While this structure meets the basic performance requirements of bushings to a certain extent, it often struggles to achieve flexible performance adjustments when facing complex operating conditions. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a double-buckle assembly, which can quickly adjust the performance of the product to meet diverse needs by adjusting the rubber structure and rubber formulation of the first and second rubbers, as well as the structure and formulation of the intermediate performance ring.

[0005] According to an embodiment of the present invention, a dual-bushing assembly includes: a first bushing, the first bushing including: a first inner tube, a first rubber, and a first outer tube, the first rubber being connected between the first inner tube and the first outer tube, and a first groove being formed between the first inner tube, the first outer tube, and the first rubber; a second bushing, the second bushing including: a second inner tube, a second rubber, and a second outer tube, the second rubber being connected between the second inner tube and the second outer tube, and a second groove being formed between the second inner tube, the second outer tube, and the second rubber; and a performance ring, the performance ring being made of a different material or formulation than the first rubber and the second rubber; wherein, after the first bushing and the second bushing are assembled, the first groove and the second groove form an accommodating space for accommodating the performance ring.

[0006] According to some embodiments of the present invention, the performance ring is provided with multiple sets of through holes extending axially, and the multiple sets of through holes are spaced apart circumferentially along the performance ring.

[0007] According to some embodiments of the present invention, any set of through holes includes at least two through holes, which are arranged radially spaced along the performance ring.

[0008] According to some embodiments of the present invention, the first rubber includes at least one first hollow region and at least one first solid region that are interleaved in the circumferential direction, and the second rubber includes at least one second hollow region and at least one second solid region that are interleaved in the circumferential direction.

[0009] According to some embodiments of the present invention, the first hollow region coincides with the second hollow region, and the first solid region coincides with the second solid region.

[0010] According to some embodiments of the present invention, the first hollow region coincides with the second solid region, and the first solid region coincides with the second hollow region.

[0011] According to some embodiments of the present invention, a first snap-fit ​​portion is provided at one end of the first inner tube facing the second inner tube, and a second snap-fit ​​portion is provided at one end of the second inner tube facing the first inner tube, and the first snap-fit ​​portion and the second snap-fit ​​portion are engaged in a snap-fit ​​relationship.

[0012] According to some embodiments of the present invention, the first snap-fit ​​portion is one of a protrusion and a groove, and the second snap-fit ​​portion is the other of a protrusion and a groove, wherein the groove and the protrusion engage with each other.

[0013] According to some embodiments of the present invention, the inner peripheral wall of the first inner tube is provided with a first positioning groove, and the inner peripheral wall of the second inner tube is provided with a second positioning groove. The first positioning groove and the second positioning groove correspond to each other and are used for the installation and positioning of the first bushing and the second bushing.

[0014] According to some embodiments of the present invention, the double bushing assembly further includes: a mating sleeve, wherein the outer walls of the first outer tube and the second outer tube are both interference-fitted with the inner wall of the mating sleeve.

[0015] Beneficial effects:

[0016] The dual-bushing assembly of this invention can meet different performance requirements by adjusting the rubber structure and rubber formulation of the first and second rubbers; by adjusting the structure and formulation of the intermediate performance ring, the performance of the product can be quickly adjusted to adapt to different road condition tests. Only the structure and rubber formulation of some parts need to be adjusted to meet the new vehicle road test performance requirements, and the dual-bushing assembly has a mature structure with advantages such as stability and simple processing technology.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the double bushing assembly according to the present invention; Figure 2 This is a cross-sectional view of the double bushing assembly according to the present invention; Figure 3 This is a schematic diagram of the structure of the first bushing, the second bushing, and the performance ring according to the present invention.

[0019] Figure label: 1. First bushing; 11. First inner tube; 111. First snap-fit ​​part; 112. First positioning groove; 12. First rubber; 121. First hollow area; 122. First solid area; 13. First outer tube; 2. Performance ring; 21. Through hole; 3. Second bushing; 31. Second inner tube; 311. Second snap-fit ​​part; 312. Second positioning groove; 32. Second rubber; 33. Second outer tube. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figures 1-3 A double bushing assembly according to an embodiment of the present invention is described.

[0022] According to an embodiment of the present invention, a double bushing assembly includes: a first bushing 1, a second bushing 3, and a performance ring 2. The performance ring 2 is disposed between the first bushing 1 and the second bushing 3. The first bushing 1 and the second bushing 3 are two independent bushing structures. During performance debugging, the rubber structure and rubber formula of the upper and lower bushings can be adjusted according to the different performance requirements of the customer.

[0023] like Figures 1-3 As shown, the first bushing 1 includes a first inner tube 11, a first rubber 12, and a first outer tube 13. The first rubber 12 connects the first inner tube 11 and the first outer tube 13. Both the first inner tube 11 and the first outer tube 13 are annular tubular structures with a central through-hole 21. The first rubber 12 is disposed between the outer wall of the first inner tube 11 and the inner wall of the first outer tube 13, forming a buffer layer. The thickness of the first rubber 12 is adjustable to meet the shock absorption and cushioning requirements under different road conditions. The hardness and formula of the rubber material can be adjusted according to customer needs, such as natural rubber or synthetic rubber. The rubber layer is bonded to the inner and outer tubes through a vulcanization process to ensure the bonding strength between the rubber layer and the metal components.

[0024] The first inner tube 11 and the second inner tube 31 can be made of high-strength metals, such as steel or aluminum alloy, and the surface is hardened to improve wear resistance.

[0025] Combination Figure 2 and Figure 3 As shown, the second bushing 3 includes a second inner tube 31, a second rubber 32, and a second outer tube 33. The second rubber 32 connects the second inner tube 31 and the second outer tube 33. Both the second inner tube 31 and the second outer tube 33 are tubular structures with annular cross-sections. A through hole 21 is provided at the center of the second inner tube 31 and the second outer tube 33. The second rubber 32 is disposed between the outer wall of the second inner tube 31 and the inner wall of the second outer tube 33, forming a buffer layer. The thickness of the second rubber 32 is adjustable to meet the shock absorption and buffering requirements under different road conditions. The hardness and formula of the rubber material can be adjusted according to customer needs, such as natural rubber, synthetic rubber, etc. The rubber layer is bonded to the inner and outer tubes through a vulcanization process to ensure the bonding strength between the rubber layer and the metal components.

[0026] The material of the second inner tube 31 can be a high-strength metal, such as steel or aluminum alloy, and the surface is hardened to improve wear resistance.

[0027] like Figure 3 As shown, a first groove is formed between the first inner tube 11, the first outer tube 13, and the first rubber 12, and a second groove is formed between the second inner tube 31, the second outer tube 33, and the second rubber 32. One end face of the first rubber 12 is lower than one end face of the first inner tube 11 and the first outer tube 13 to form the first groove between the first rubber 12 and the first inner tube 11 and the first outer tube 13; one end face of the second rubber 32 is lower than one end face of the first inner tube 11 and the first outer tube 13 to form the second groove between the second rubber 32 and the second inner tube 31 and the second outer tube 33. according to Figures 1-3 As shown, the double-buffer assembly also includes a performance ring 2, the material of which differs from the material or formulation of the first rubber 12 and the second rubber 32. The performance ring 2 can be made of rubber, but with a different formulation than the first rubber 12 and the second rubber 32; alternatively, the performance ring 2 can be made of silicone or polyurethane. The performance ring 2 is interference-fitted with the first bushing 1 and the second bushing 3 on both sides, facilitating the assembly and pressing of the double-buffer assembly. During performance testing, the structure and formulation of the upper and lower bushing rubbers can be adjusted according to the customer's different performance requirements; the structure and formulation of the middle performance ring 2 can also be adjusted according to the customer's different performance requirements. The performance ring 2 can also be made of a high-hardness polyurethane structure to increase the swing angle stiffness of the double-buffer assembly, thereby increasing the swing angle stiffness of the double-buffer assembly without changing its torsional stiffness.

[0028] In this assembly, after the first bushing 1 and the second bushing 3 are assembled, the first groove and the second groove form a space for accommodating the performance ring 2. By accommodating the performance ring 2 through the first groove and the second groove, flexible adjustment of the bushing performance and structural stability are achieved. Specifically, the double bushing assembly is completed by pressing the first bushing 1 into the mating sleeve or assembly ring, then placing the performance ring 2 inside, and finally pressing the second bushing 3 into the mating sleeve or assembly ring.

[0029] Therefore, the dual bushing assembly can meet different performance requirements by adjusting the rubber structure and rubber formula of the first rubber 12 and the second rubber 32; by adjusting the structure and formula of the intermediate performance ring 2, the performance of the product can be quickly adjusted to adapt to different road condition tests. Only the structure and rubber formula of some parts need to be adjusted to meet the new vehicle road test performance requirements, and the dual bushing assembly has a mature structure with advantages such as stability and simple processing technology.

[0030] Through the above design, the present invention not only solves the performance debugging problem that existing bushings cannot solve, but also has the advantages of simple structure and low requirements for production process and skeleton manufacturing. It realizes flexible adjustment of bushing performance and structural stability, and solves the technical problem that existing bushings cannot meet diverse performance requirements.

[0031] like Figure 2 and Figure 3 As shown, the performance ring 2 is provided with multiple sets of through holes 21 extending along the axial direction. The multiple sets of through holes 21 are spaced apart along the circumference of the performance ring 2. The structure of the through holes 21 on the performance ring 2 reduces the dynamic stiffness and radial stiffness of the performance ring 2, and can also prevent the first rubber 12 and the second rubber 32 from making impact noise when they come into contact with the performance ring 2.

[0032] Furthermore, any group of through holes 21 includes at least two through holes 21, which are arranged radially spaced apart along the performance ring 2. Specifically, each group of through holes 21 includes a plurality of through holes 21 arranged radially spaced apart, which can be two or three. The specific number and size of the through holes are set according to the thickness of the performance ring 2 to avoid impact noise when the first rubber 12 and the second rubber 32 come into contact with the performance ring 2.

[0033] according to Figure 1 As shown, the first rubber 12 includes at least one first hollow region 121 and at least one first solid region 122 interlaced circumferentially connected, and the second rubber 32 includes at least one second hollow region and at least one second solid region interlaced circumferentially connected. Specifically, the first solid region 122 and the second solid region ensure the product's durability, while the first hollow region 121 and the second hollow region ensure comfort. By setting the number and size of the hollow and solid regions on the first rubber 12 and the second rubber 32, the product performance curve can be changed to meet the needs of different road conditions.

[0034] The specific number and size of the first hollow area 121, the first solid area 122, the second hollow area, and the second solid area can be set according to actual needs and are not limited. In some embodiments, the first hollow area 121 and the second hollow area overlap, and the first solid area 122 and the second solid area overlap. That is, the number of first hollow areas 121 and the number of second hollow areas can be the same, and the first hollow areas 121 and the second hollow areas can completely overlap axially; the number of first solid areas 122 and the number of second solid areas can be the same, and the first solid areas 122 and the second solid areas can completely overlap. Depending on different road conditions, the first hollow area 121 and the second hollow area can be located in the double bushing assembly where overall vehicle comfort is required, and the first solid area 122 and the second solid area can be located in the double bushing assembly where durability is required.

[0035] In other embodiments, the first hollow region 121 coincides with the second solid region, and the first solid region 122 coincides with the second hollow region. Specifically, the number of first hollow regions 121 and second solid regions can be the same, and in the axial direction, the first hollow region 121 and second solid region can completely overlap. The number of first solid regions 122 and second hollow regions can be the same, and the first solid region 122 and second hollow region can completely overlap. This adjusts the product performance curve, providing good flexibility under small loads and sufficient support and restraint under large loads, thus comprehensively improving service life and user comfort.

[0036] like Figure 3 As shown, the first inner tube 11 has a first snap-fit ​​portion 111 at the end facing the second inner tube 31, and the second inner tube 31 has a second snap-fit ​​portion 311 at the end facing the first inner tube 11. The first snap-fit ​​portion 111 and the second snap-fit ​​portion 311 engage with each other. This allows for precise positioning of the press-fit direction and position of the double bushing assembly, preventing misalignment of the first inner tube 11 and the second inner tube 31 when the double bushing assembly is subjected to torsional force.

[0037] In this invention, the first engaging portion 111 is one of a protrusion and a groove, and the second engaging portion 311 is the other of a protrusion and a groove, with the groove and protrusion engaging with each other. This invention allows for flexible adjustment of the rubber structure, hardness, and formulation of the first bushing 1 and the second bushing 3 according to different road condition performance requirements of the customer. Furthermore, the protrusion and groove structure can precisely position the pressing direction and location of the double bushing assembly, preventing misalignment of the first inner tube 11 and the second inner tube 31 when the double bushing assembly is subjected to torsional force.

[0038] The depth and width of these protrusions and grooves are designed according to actual needs to ensure sufficient friction and positioning accuracy. The protrusions and grooves on the inner tube end face cooperate to form a snap-fit ​​connection, preventing misalignment during torsion. This design not only improves assembly accuracy but also enhances the stability of the bushing under torsional forces.

[0039] like Figure 3 As shown, the inner circumferential wall of the first inner tube 11 is provided with a first positioning groove 112, and the inner circumferential wall of the second inner tube 31 is provided with a second positioning groove 312. The first positioning groove 112 and the second positioning groove 312 correspond to each other and are used for the installation and positioning of the first bushing 1 and the second bushing 3. By accommodating the performance ring 2 through the first groove and the second groove, the flexible adjustment of the bushing performance and the stability of the structure are realized. The first positioning groove 112 and the second positioning groove 312 can be used to position the hollow or solid direction of the first bushing 1 or the second bushing 3, which facilitates the installation of the second bushing 3.

[0040] In some embodiments, the double bushing assembly further includes a mating sleeve, wherein the outer walls of the first outer tube 13 and the second outer tube 33 are both interference-fitted with the inner wall of the mating sleeve. Specifically, the double bushing assembly is formed by pressing the first bushing 1 into the mating sleeve. During press-fitting, the hollow and solid orientations of the first bushing 1 and the second bushing 3 are fixed by the first positioning groove 112 and the second positioning groove 312 on the first inner tube 11 and the second inner tube 31. After the performance ring 2 is inserted, the other second bushing 3 is pressed into the mating sleeve. The first bushing 1 and the second bushing 3 are mated by the groove and protrusion structure to prevent the two inner tubes from moving and misaligning during vehicle movement.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0043] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A double bushing assembly, characterized in that, include: The first bushing (1) includes: a first inner tube (11), a first rubber (12) and a first outer tube (13), wherein the first rubber (12) is connected between the first inner tube (11) and the first outer tube (13), and a first groove is formed between the first inner tube (11), the first outer tube (13) and the first rubber (12); The second bushing (3) includes: a second inner tube (31), a second rubber (32) and a second outer tube (33), wherein the second rubber (32) is connected between the second inner tube (31) and the second outer tube (33), and a second groove is formed between the second inner tube (31), the second outer tube (33) and the second rubber (32); Performance ring (2), the material of which is different from the material or formulation of the first rubber (12) and the second rubber (32); Wherein, after the first bushing (1) and the second bushing (3) are assembled, the first groove and the second groove form a receiving space for accommodating the performance ring (2).

2. The double bushing assembly according to claim 1, characterized in that, The performance ring (2) is provided with multiple sets of through holes (21) extending along the axial direction, and the multiple sets of through holes (21) are spaced apart along the circumferential direction of the performance ring (2).

3. The double bushing assembly according to claim 2, characterized in that, Any set of through holes (21) includes: at least two through holes (21) arranged at radial intervals along the performance ring (2).

4. The double bushing assembly according to claim 1, characterized in that, The first rubber (12) includes at least one first hollow region (121) and at least one first solid region (122) that are interlocked in the circumferential direction, and the second rubber (32) includes at least one second hollow region and at least one second solid region that are interlocked in the circumferential direction.

5. The double bushing assembly according to claim 4, characterized in that, The first hollow region (121) coincides with the second hollow region, and the first solid region (122) coincides with the second solid region.

6. The double bushing assembly according to claim 4, characterized in that, The first hollow region (121) coincides with the second solid region, and the first solid region (122) coincides with the second hollow region.

7. The double bushing assembly according to claim 1, characterized in that, The first inner tube (11) is provided with a first snap-fit ​​part (111) at one end facing the second inner tube (31), and the second inner tube (31) is provided with a second snap-fit ​​part (311) at one end facing the first inner tube (11). The first snap-fit ​​part (111) and the second snap-fit ​​part (311) are snap-fitted together.

8. The double bushing assembly according to claim 7, characterized in that, The first snap-fit ​​part (111) is one of a protrusion and a groove, and the second snap-fit ​​part (311) is the other of a protrusion and a groove, with the groove and the protrusion engaging with each other.

9. The double bushing assembly according to claim 1, characterized in that, The inner circumferential wall of the first inner tube (11) is provided with a first positioning groove (112), and the inner circumferential wall of the second inner tube (31) is provided with a second positioning groove (312). The first positioning groove (112) and the second positioning groove (312) correspond to each other and are used for the installation and positioning of the first bushing (1) and the second bushing (3).

10. The double bushing assembly according to claim 1, characterized in that, Also includes: The outer walls of the first outer tube (13) and the second outer tube (33) are both interference-fitted with the inner wall of the matching sleeve.

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