Double-lining structure

Abstract

The invention relates to a double-bushing structure, which belongs to the technical field of automobile part product structures, and comprises a bushing inner tube A and a bushing inner tube B which are both of tubular structures and are respectively provided with a bulge and a clamping groove which are matched with each other; the lining rubber A and the lining rubber B are of annular rubber structures and are located between the inner pipe and the outer pipe; the lining outer pipe A and the lining outer pipe B are of cylindrical structures, the inner diameter is slightly larger than the outer diameter of the rubber structure, and the outer surfaces of the outer pipes are in interference fit with the matched sleeve; the matching sleeve is a middle connecting sleeve, and the two ends of the matching sleeve are in interference fit with the A lining outer pipe and the B lining outer pipe respectively. According to the lining structure, the rubber structure and performance can be flexibly adjusted according to customer requirements, accurate positioning and dislocation prevention are achieved, meanwhile, the structural stability is enhanced in an interference press-in mode, and the reliability and adaptability of the lining are effectively improved.

Description

Technical Field

[0001] The invention relates to a new bushing structure, belonging to the technical field of automobile component product structures. Background Art

[0002] In the process of automobile development, as the types of automobiles increase, the requirements for the performance of bushing parts are becoming more and more diverse. The rapid development of the modern automobile industry has made the types and uses of automobiles increasingly rich. From family cars to SUVs, from commercial vehicles to high-performance sports cars, each type of automobile has put forward different performance requirements for bushing parts. For example, family cars pay more attention to comfort and economy, requiring bushings to have good shock absorption and noise reduction performance; while SUVs and commercial vehicles require stronger durability and load-bearing capacity to cope with complex road conditions and heavy load conditions. In addition, high-performance sports cars have extremely high requirements for the response speed and precision of bushings to ensure the stability and controllability of the vehicle during high-speed driving and intense control.

[0003] However, existing bushing structures often fail to meet these diverse needs. Traditional bushings usually use a single rubber formula and structural design, which cannot provide optimal performance under different road conditions and usage conditions. For example, some bushings are designed with more emphasis on shock absorption performance, but are insufficient in terms of load-bearing capacity and durability; while other bushings have high strength and stiffness, but are not effective in shock absorption and noise reduction. This performance limitation requires complex adjustments and optimizations of existing bushings when facing diverse needs, which increases the difficulty of design and manufacturing.

[0004] In addition, the structural design of existing bushings also has certain limitations. Traditional bushings usually adopt an integral structure, in which the rubber layer and the metal parts are combined through a vulcanization process to form a whole. Although this structure meets the basic performance requirements of the bushing to a certain extent, it is often difficult to achieve flexible adjustment of performance when facing complex working conditions. For example, when it is necessary to improve the shock absorption performance of the bushing, it is often necessary to increase the thickness of the rubber layer or change the rubber formula, but this may cause the stiffness and strength of the bushing to decrease, affecting its load-bearing capacity and durability. Conversely, when it is necessary to increase the stiffness and strength of the bushing, its shock absorption and noise reduction performance may be sacrificed. This performance trade-off requires existing bushings to make complex trade-offs and choices when meeting diverse needs, which increases the difficulty of design and manufacturing.

[0005] In summary, existing bushing parts have problems such as difficulty in performance adjustment and structural design limitations when facing diversified demands, making it difficult to meet the diversified requirements of the modern automotive industry for bushing performance. Therefore, developing a bushing structure that can flexibly adjust performance and meet diversified demands has become an important issue in the development of the automotive industry. Summary of the invention

[0006] In order to meet the customer's loading and performance requirements, the purpose of the present invention is to provide a new bushing structure, which is simple in structure and can be produced and processed by existing processes, and the existing production process and skeleton structure can meet the manufacturing needs.

[0007] In order to achieve the above object, the technical solution of the present invention provides a double bushing structure, comprising:

[0008] The A bushing inner tube and the B bushing inner tube are both tubular structures, and are respectively provided with matching protrusions and grooves;

[0009] A bushing rubber and B bushing rubber are annular rubber structures and are located between the inner tube and the outer tube;

[0010] The A bushing outer tube and the B bushing outer tube are cylindrical structures, with inner diameters slightly larger than the outer diameters of the rubber structures, and the outer surfaces of the outer tubes are interference fit with the matching sleeves;

[0011] The matching sleeve is an intermediate connecting sleeve, and both ends thereof are respectively interference-fitted with the A bushing outer tube and the B bushing outer tube.

[0012] Preferably, the A bushing outer tube is interference pressed into the matching sleeve from one side, and the B bushing outer tube is interference pressed into the matching sleeve from the other side, and they are symmetrically arranged with the A bushing outer tube to form an integral structure.

[0013] Preferably, the inner surface of the mating sleeve is provided with a groove that cooperates with the A bushing outer tube and the B bushing outer tube to ensure the stability of the interference fit.

[0014] Preferably, the A bushing inner tube and the B bushing inner tube cooperate with each other through a protrusion and a slot structure to form a snap connection to prevent dislocation during twisting.

[0015] Preferably, the A bushing inner tube and the B bushing inner tube are located at the center of the mating sleeve to ensure performance consistency in a specified direction.

[0016] Preferably, the outer surfaces of the A bushing outer tube and the B bushing outer tube are provided with reinforcing ribs or knurling to increase the friction with the matching sleeve to prevent loosening.

[0017] Preferably, the A bushing inner tube and the B bushing inner tube are made of high-strength metal, and the surface is hardened to improve wear resistance.

[0018] Preferably, the A bushing rubber and the B bushing rubber are made of natural rubber or synthetic rubber.

[0019] Preferably, the outer diameters of the A bushing outer tube and the B bushing outer tube are larger than the inner tubes, and the inner diameters are slightly larger than the outer diameters of the rubber structures, and the outer tubes are made of high-strength metal.

[0020] Preferably, the outer surface of the matching sleeve may be provided with reinforcing ribs.

[0021] In summary, the present invention includes the following beneficial technical effects:

[0022] 1. The present invention can adjust the rubber structure of the bushings on both sides according to the different road performance requirements of customers.

[0023] 2. The present invention can adjust the rubber hardness and formula of the bushings on both sides according to the different road performance requirements of customers.

[0024] 3. The present invention can accurately position the bushing A and the bushing B through the groove in the middle of the inner tube, thereby ensuring the accurate assembly of the bushing to ensure the performance in the specified direction.

[0025] 4. The present invention avoids the problem of the outer tube being separated due to the force applied to the bushing by interference pressing the bushing A and the bushing B into the casing from two directions respectively.

[0026] 5. The present invention avoids the problem of misalignment of the inner tubes of the two bushings when the bushings are subjected to torsional forces through the buckle structure of the inner tube of bushing A and the inner tube of bushing B. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a double bushing structure of the present invention;

[0028] Figure 2 This is a cross-sectional view of a double bushing structure of the present invention;

[0029] Figure 3 It is a schematic structural diagram of a double-bushing structure A bushing inner tube and a B bushing inner tube of the present invention.

[0030] Figure numerals: 1. A bushing inner tube; 2. A bushing rubber; 3. A bushing outer tube; 4. B bushing inner tube; 5. B bushing rubber; 6. B bushing outer tube; 7. matching sleeve. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present invention discloses a double bushing structure, which is mainly composed of an A bushing inner tube 1, an A bushing rubber 2, an A bushing outer tube 3, a B bushing inner tube 4, a B bushing rubber 5, a B bushing outer tube 6 and a matching sleeve 7. The structure realizes flexible adjustment of bushing performance and structural stability through ingenious design, and solves the technical problem that existing bushings cannot meet diversified performance requirements. Figure 1-3 , the present invention is described in detail.

[0033] like Figure 1 As shown, the A bushing inner tube 1 and the B bushing inner tube 4 are both tubular structures with a circular cross-section, a through hole in the center, and matching protrusions and grooves on the end faces. The depth and width of these protrusions and grooves are designed according to actual needs to ensure sufficient friction and positioning accuracy. The material of the A bushing inner tube 1 and the B bushing inner tube 4 is high-strength metal, such as steel or aluminum alloy, and the surface is hardened to improve wear resistance. The protrusions and groove structures on the end faces of the inner tubes cooperate with each other to form a snap connection to prevent dislocation during twisting. This design not only improves the assembly accuracy, but also enhances the stability of the bushing under the action of torsional force.

[0034] like Figure 2 As shown, the A bushing rubber 2 and the B bushing rubber 5 are annular rubber layers, which are wrapped between the inner tube and the outer tube to form a buffer layer. The thickness of the rubber layer 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 combined with the inner tube and the outer tube through a vulcanization process to ensure the bonding strength between the rubber layer and the metal parts. The A bushing outer tube 3 and the B bushing outer tube 6 are cylindrical structures with an outer diameter larger than the inner tube and an inner diameter slightly larger than the outer diameter of the rubber layer. The outer tube is made of high-strength metal with a smooth surface to reduce friction. The outer tube is vulcanized and combined with the rubber layer to form an integral structure, and the outer surface of the outer tube is interference fit with the matching sleeve 7. The outer surface of the outer tube is provided with reinforcing ribs or knurling to increase the friction with the matching sleeve 7 to prevent loosening.

[0035] The matching sleeve 7 is an intermediate connecting sleeve, and its two ends are respectively interference fit with the A bushing outer tube 3 and the B bushing outer tube 6. The sleeve is made of high-strength metal, with a smooth inner surface and reinforcing ribs on the outer surface. The inner surface of the sleeve is provided with a groove that cooperates with the A bushing outer tube 3 and the B bushing outer tube 6 to ensure the stability of the interference fit. The A bushing outer tube 3 is interference pressed into the matching sleeve 7 from one side, and the B bushing outer tube 6 is interference pressed into the matching sleeve 7 from the other side, and is symmetrically arranged with the A bushing outer tube 3 to form an integral structure. This symmetrical arrangement design allows the overall structure to be evenly distributed when subjected to force, thereby improving the service life and reliability of the bushing.

[0036] like Figure 3As shown, the A bushing inner tube 1 and the B bushing inner tube 4 cooperate with each other through the protrusions and slot structures on the end faces of the inner tubes to form a snap connection. The shape and size design of the protrusions and slots enable the two inner tubes to fit tightly during assembly, ensuring that no relative displacement occurs under the action of torsional force. The design of this snap structure not only improves the assembly accuracy, but also enhances the stability of the bushing under torsional force. The A bushing inner tube 1 and the B bushing inner tube 4 are located at the center of the matching sleeve 7, and the protrusions and slot structures are symmetrically arranged to ensure performance consistency in the specified direction. The symmetrical arrangement design allows the overall structure to be evenly distributed when subjected to force, thereby improving the service life and reliability of the bushing.

[0037] The present invention realizes flexible adjustment of bushing performance and structural stability through the independent design of bushing A and bushing B and the precise positioning of the slot structure. Specifically, bushing A and bushing B are two independent bushing structures, and the rubber structure, rubber hardness, formula, etc. of the bushing can be adjusted separately to meet performance requirements. This independent adjustment capability enables the present invention to flexibly adjust the rubber structure, hardness and formula of the bushings on both sides according to the different road performance requirements of customers. In addition, the protruding structure on bushing A and the slot structure on bushing B can accurately locate the press-fitting direction and position of the bushing, avoiding the problem of misalignment of the inner tube positions of the two bushings when the bushings are subjected to torsional forces. Through the above design, the present invention not only solves the performance adjustment problem that cannot be solved by existing bushings, but also has the advantages of simple structure and low requirements for production process and skeleton manufacturing, which can solve the defect that the existing bushings cannot significantly adjust the rubber performance of the two sides with large differences.

[0038] The structure of the present invention is simple and does not involve a difficult production process. Traditional vulcanization mold equipment and processes can meet production needs. The product has a simple structure, and the structure of the outsourced parts and the matching process are very common. This not only reduces the difficulty of the manufacturing process, but also greatly improves production efficiency and product quality. At the same time, while reducing the difficulty of the manufacturing process, the present invention is extremely convenient to adjust the performance requirements of the two bushings, which has a great technical improvement on the debugging of the existing bushings.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double bushing structure, characterized in that: include: The A bushing inner tube (1) and the B bushing inner tube (4) are both tubular structures, and are respectively provided with matching protrusions and grooves; The A bushing rubber (2) and the B bushing rubber (5) are annular rubber structures and are located between the inner tube and the outer tube; The A bushing outer tube (3) and the B bushing outer tube (6) are cylindrical structures, the inner diameter of which is slightly larger than the outer diameter of the rubber structure, and the outer surface of the outer tube is interference fit with the matching sleeve (7); The matching sleeve (7) is an intermediate connecting sleeve, and its two ends are respectively interference-fitted with the A bushing outer tube (3) and the B bushing outer tube (6).

2. A double bushing structure according to claim 1, characterized in that: The A bushing outer tube (3) is pressed into the matching sleeve (7) from one side by interference fit, and the B bushing outer tube (6) is pressed into the matching sleeve (7) from the other side by interference fit, and is symmetrically arranged with the A bushing outer tube (3) to form an integral structure.

3. A double bushing structure according to claim 2, characterized in that: The inner surface of the matching sleeve (7) is provided with a groove matching with the A bushing outer tube (3) and the B bushing outer tube (6) to ensure the stability of the interference fit.

4. A double bushing structure according to claim 3, characterized in that: The A bushing inner tube (1) and the B bushing inner tube (4) cooperate with each other through a protrusion and a slot structure to form a snap connection to prevent dislocation during twisting.

5. A double bushing structure according to claim 4, characterized in that: The A bushing inner tube (1) and the B bushing inner tube (4) are located at the center of the matching sleeve (7) to ensure performance consistency in a specified direction.

6. A double bushing structure according to claim 5, characterized in that: The outer surfaces of the A bushing outer tube (3) and the B bushing outer tube (6) are provided with reinforcing ribs or knurling to increase the friction with the matching sleeve (7) to prevent loosening.

7. A double bushing structure according to any one of claims 1 to 6, characterized in that: The A bushing inner tube (1) and the B bushing inner tube (4) are made of high-strength metal, and their surfaces are hardened to improve wear resistance.

8. A double bushing structure according to claim 7, characterized in that: The A bushing rubber (2) and the B bushing rubber (5) are made of natural rubber or synthetic rubber.

9. A double bushing structure according to claim 8, characterized in that: The outer diameters of the A bushing outer tube (3) and the B bushing outer tube (6) are larger than the inner tubes, and the inner diameters are slightly larger than the outer diameters of the rubber structures. The outer tubes are made of high-strength metal.

10. A double bushing structure according to any one of claims 1 to 6, characterized in that: The outer surface of the matching sleeve (7) may be provided with reinforcing ribs.

Images