Rubber damper

Abstract

The utility model discloses a rubber shock absorber, including metal parts and rubber outer ring, rubber outer ring axial has seted up the mounting hole, the ring is seted up the preset hole for with the preburied bolt thread cooperation on the outside world frock on rubber outer ring, is provided with the bearing structure for improving rubber outer ring axial and radial load intensity on rubber outer ring, rubber outer ring and metal parts are bonded connection setting through vulcanization technology, and the first reinforcing structure for improving rubber outer ring and metal parts between bonding strength to improve rubber outer ring axial load intensity is arranged between the inner peripheral wall of mounting hole and the outer peripheral wall of metal parts when vulcanization technology processes, and the inner peripheral wall of mounting hole opening is provided with the second reinforcing structure for with metal parts cooperation to improve rubber outer ring axial load intensity. The utility model has solved the problem that traditional rubber shock absorber's rubber outer ring axial and radial load capacity is weak, and the rubber outer ring is easy to appear the connection failure with metal parts.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber shock absorbers, specifically a rubber shock absorber. Background Technology

[0002] In the fields of machinery, automobiles, and home appliances, rubber shock absorbers are key components due to their ability to absorb vibrations and reduce noise. Their core structure typically consists of a metal component and a rubber outer ring, usually bonded together through a vulcanization process. The rubber outer ring has mounting holes to mate with the metal component and is connected to external tooling via pre-embedded bolts through pre-drilled holes. However, traditional products have significant shortcomings: First, the rubber outer ring lacks a dedicated load-bearing structure. When axial or radial loads are generated during equipment operation, the rubber is prone to deformation and cracking due to insufficient strength, resulting in weak load-bearing capacity. Second, during the vulcanization process, the inner circumferential wall of the rubber outer ring's mounting hole lacks a reinforcing structure between it and the outer circumferential wall of the metal component, leading to low bond strength. Under axial loads, bond failure and relative detachment easily occur. Third, the inner circumferential wall at the mounting hole opening lacks a reinforcing structure to mate with the metal component, making this area prone to stress concentration and further exacerbating connection failure under axial loads. These defects result in a short service life for traditional rubber shock absorbers. Frequent replacement not only increases maintenance costs but may also affect the normal operation of the equipment. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a rubber shock absorber that solves the problem that the rubber outer ring of traditional rubber shock absorbers has weak resistance to axial and radial loads, which makes it easy for the rubber outer ring to fail in connection with metal components.

[0004] To achieve the above objectives, this utility model provides a rubber shock absorber, comprising a metal component for connection and cooperation with external tooling and a rubber outer ring for cooperation with the metal component. The rubber outer ring has an axially formed mounting hole, the inner wall of which abuts against the outer wall of the metal component. The rubber outer ring also has a circumferentially formed pre-drilled hole for threaded cooperation with a pre-embedded bolt on the external tooling. The rubber outer ring is provided with a load-bearing structure to improve its resistance to axial and radial loads. The rubber outer ring and the metal component are bonded together via a vulcanization process. A first reinforcing structure is provided between the inner wall of the mounting hole and the outer wall of the metal component to improve the bonding strength between the rubber outer ring and the metal component during the vulcanization process, thereby increasing the axial load resistance of the rubber outer ring. A second reinforcing structure is provided on the inner wall of the mounting hole opening for cooperation with the metal component to further improve the axial load resistance of the rubber outer ring.

[0005] The advantages of adopting the above technical solution are as follows: In the above rubber shock absorber, the inner peripheral wall of the mounting hole abuts against the outer peripheral wall of the metal component, which can ensure the basic fit stability between the metal component and the rubber outer ring and avoid initial misalignment. The pre-set hole and the threaded engagement of the pre-embedded bolts of the external tooling can realize the reliable connection between the shock absorber and the external tooling, preventing the shock absorber from loosening during equipment operation. The above-mentioned load-bearing structure can directly improve the strength of the rubber outer ring against axial and radial loads, preventing the rubber outer ring from deforming or cracking due to load. The vulcanization process bonds the metal component and the rubber outer ring, which can enhance the initial connection stability and reduce the risk of basic connection failure. The first reinforcing structure improves the bonding strength between the rubber outer ring and the metal component during vulcanization, further strengthening the axial load resistance of the rubber outer ring and preventing the axial load from causing the bond to detach. At the same time, the second reinforcing structure, through cooperation with the metal component, supplements the axial load resistance of the rubber outer ring from the opening of the mounting hole. The synergistic effect of multiple structures solves the problem of traditional connection failure, extends the service life of the shock absorber, and ensures the stability of equipment operation.

[0006] The present invention further includes the following: the bearing structure includes a first bearing plate embedded in the rubber outer ring, the first bearing plate is arranged in a ring shape, and the radial cross section of the first bearing plate is arranged in an arc shape with the arc direction facing the top wall of the rubber outer ring.

[0007] The advantages of adopting the above technical solution are as follows: the first bearing plate in the above-mentioned bearing structure is embedded in the rubber outer ring, which can avoid the bearing plate being exposed to the outside environment and corroded. At the same time, it can ensure the structural synergy between the bearing plate and the rubber outer ring. Moreover, the first bearing plate is arranged in a ring shape, which can make the load evenly distributed in the rubber outer ring and avoid the damage to the rubber outer ring caused by local stress concentration. Its radial section is arc-shaped and the curvature is facing the top wall of the rubber outer ring. This arc-shaped structure can disperse axial and radial loads through its own deformation, transforming concentrated loads into dispersed stresses and improving the overall load resistance of the rubber outer ring. By combining the ring shape and the arc-shaped structure, it can ensure that the bearing plate fully covers the support range of the rubber outer ring, and reduce the direct impact of the load on the rubber outer ring through the buffering effect of the arc shape, preventing the rubber outer ring from fatigue cracking due to long-term load bearing. With the base connection between the metal components and the rubber outer ring, the load resistance performance of the shock absorber is further optimized, ensuring the structural integrity and stability of the shock absorber in long-term use.

[0008] The present invention further includes: the bearing structure further includes a second bearing plate embedded in the rubber outer ring, the second bearing plate is arranged in a ring shape, the radial cross section of the second bearing plate is arranged in an arc shape and the arc direction is arranged towards the bottom wall of the rubber outer ring, the first bearing plate and the second bearing plate are arranged opposite to each other, and one end of the first bearing plate and one end of the second bearing plate are offset from each other.

[0009] The advantages of adopting the above technical solution are as follows: The newly added second bearing plate in the bearing structure is embedded in the rubber outer ring, forming a coordinated support with the first bearing plate. This avoids insufficient support from a single bearing plate, which could lead to localized weakness in the rubber outer ring. Furthermore, the second bearing plate is ring-shaped, allowing for uniform load transfer from the bottom of the rubber outer ring. Together with the ring-shaped support at the top of the first bearing plate, it forms a bidirectional load-resistance structure, enhancing the overall resistance of the rubber outer ring to axial and radial loads. Its radial cross-section is arc-shaped with the arc facing the bottom wall of the rubber outer ring, dispersing axial and radial loads from the bottom. This, combined with the arc-shaped buffer at the top of the first bearing plate, creates a bidirectional buffering effect, reducing the impact of loads on the rubber outer ring. The first and second bearing plates are positioned opposite each other with one end offset, preventing the superposition of forces and resulting in localized stress concentration. This allows the load to be transferred in a stepped manner within the rubber outer ring, enhancing structural stability. Simultaneously, the embedded design does not affect the fit between the rubber outer ring and external tooling, further strengthening the rubber outer ring itself, preventing deformation or cracking caused by bidirectional loads, and extending the service life of the shock absorber.

[0010] The present invention further includes: the first reinforcing structure comprising a first spiral groove circumferentially formed on the inner peripheral wall of the mounting hole and a second spiral groove circumferentially formed on the outer peripheral wall of the metal component, wherein the first spiral groove and the second spiral groove are combined to form a threaded groove; the first reinforcing structure further includes a sealing strip disposed in the threaded groove, wherein the sealing strip is spirally arranged and is made of hard rubber material.

[0011] The advantages of adopting the above technical solution are as follows: The first and second spiral grooves of the first reinforcing structure are respectively opened on the inner peripheral wall of the mounting hole and the outer peripheral wall of the metal component. The combination of the two forms a threaded groove, which can increase the contact area between the rubber outer ring and the metal component, improve the bonding strength between the two during the vulcanization process, and reduce the risk of bonding separation caused by axial load. The spiral structure of the threaded groove can make the force evenly transmitted along the spiral direction, avoiding excessive local stress that could cause structural damage. In addition, the spiral sealing strip set in the threaded groove can fill the gap in the threaded groove, prevent air bubbles from affecting the bonding effect during vulcanization, and ensure a tight connection between the rubber outer ring and the metal component. At the same time, the sealing strip is made of hard rubber, which not only ensures its own structural strength and provides support for the threaded groove, but also has a certain degree of elasticity, which can help buffer stress under load, further enhancing the connection stability between the rubber outer ring and the metal component, preventing relative sliding between the two under axial load, and ensuring the overall axial load resistance performance of the shock absorber.

[0012] The present invention further includes the following: the second reinforcing structure includes a first reinforcing edge circumferentially disposed on the inner peripheral wall of the beginning of the mounting hole; a first mating hole is disposed on the outer peripheral wall of the metal component corresponding to the position of the first reinforcing edge; the first reinforcing edge is inserted into the first mating hole; the top wall of the first reinforcing edge is connected to the inner peripheral wall of the mounting hole in a smooth curved surface and forms a first force-bearing surface; and the first reinforcing edge is integrally formed with the rubber outer ring.

[0013] The advantages of adopting the above technical solution are as follows: The first reinforcing edge of the second reinforcing structure is inserted into the first mating hole of the metal component, which can directly enhance the connection stability between the rubber outer ring and the metal component. It restricts the axial relative displacement between the two from the beginning of the mounting hole, preventing separation caused by axial load. The smooth curved surface connection between the top wall of the first reinforcing edge and the inner peripheral wall of the mounting hole forms the first force-bearing surface. This force-bearing surface can disperse the axial load and avoid cracking due to stress concentration at the connection between the first reinforcing edge and the mounting hole, thus ensuring the load-bearing reliability of the first reinforcing edge. Furthermore, the first reinforcing edge and the rubber outer ring are integrally formed, eliminating the need for additional connecting parts. This simplifies the structure while ensuring the structural integrity of the first reinforcing edge and the rubber outer ring, improving the load-bearing capacity of the first reinforcing edge itself, and preventing the reinforcement effect from being affected by loose connection. This structure specifically improves the axial load resistance from the beginning of the mounting hole. Combined with the bonding reinforcement effect of the first reinforcing structure, it further optimizes the connection stability between the rubber outer ring and the metal component, ensuring the structural integrity of the shock absorber under axial load.

[0014] The present invention further includes: the second reinforcing structure further includes a second reinforcing edge circumferentially disposed on the inner peripheral wall at the end of the mounting hole; a second mating hole is disposed on the outer peripheral wall of the metal component corresponding to the position of the second reinforcing edge; the second reinforcing edge is inserted into the second mating hole; the top wall of the second reinforcing edge is connected to the inner peripheral wall of the mounting hole in a smooth curved surface and forms a second force-bearing surface; and the second reinforcing edge is integrally formed with the rubber outer ring.

[0015] The advantages of adopting the above technical solution are as follows: The newly added second reinforcing edge of the second reinforcing structure is inserted into the second mating hole of the metal component, which further enhances the connection stability between the rubber outer ring and the metal component from the end of the mounting hole. It forms a two-way fixed structure at both ends of the mounting hole with the first reinforcing edge, further restricting the axial relative displacement between the two and improving the axial load resistance. The smooth curved surface connection between the top wall of the second reinforcing edge and the inner peripheral wall of the mounting hole forms a second force-bearing surface, which can disperse the axial load at the end of the mounting hole, avoid stress concentration at the connection between the second reinforcing edge and the mounting hole, and ensure the reliability of the end bearing capacity. The second reinforcing edge is integrally formed with the rubber outer ring, ensuring its structural integrity with the rubber outer ring, improving its own bearing strength, simplifying the assembly process without the need for additional connecting parts, and reducing the impact of assembly errors on the reinforcement effect. This structure enables both ends of the mounting hole to have axial load resistance. Combined with the effects of the first reinforcing structure and the first reinforcing edge, it forms a multi-directional axial load resistance system, preventing the ends of the rubber outer ring from deforming or detaching due to load, and ensuring the overall operational stability and service life of the shock absorber. Attached Figure Description

[0016] Figure 1 This is a side sectional view of the present invention; Figure 2 This is a side sectional view of the rubber outer ring in this utility model; Figure 3 for Figure 2 Enlarged view of section A in the middle. Detailed Implementation

[0017] This utility model provides a rubber shock absorber, including a metal component 1 for connection and mating with external tooling and a rubber outer ring 2 for mating with the metal component 1. The rubber outer ring 2 has an axially formed mounting hole 21, the inner wall of which abuts against the outer wall of the metal component 1. The rubber outer ring 2 also has a circumferentially formed pre-drilled hole 22 for threaded mating with pre-embedded bolts on the external tooling. The rubber outer ring 2 has a load-bearing structure to improve its resistance to axial and radial loads. The rubber outer ring 2 and the metal component 1 are bonded together via a vulcanization process. A space is provided between the inner wall of the mounting hole 21 and the outer wall of the metal component 1 to improve the bonding strength between the rubber outer ring 2 and the metal component 1 during the vulcanization process. A first reinforcing structure is provided to improve the axial load resistance of the rubber outer ring 2 by increasing the bonding strength between the components 1. A second reinforcing structure is provided on the inner peripheral wall of the mounting hole 21 for cooperating with the metal component 1 to improve the axial load resistance of the rubber outer ring 2. The bearing structure includes a first bearing plate 23 embedded in the rubber outer ring 2. The first bearing plate 23 is annularly arranged, and the radial cross section of the first bearing plate 23 is arc-shaped with the arc direction facing the top wall of the rubber outer ring 2. The bearing structure also includes a second bearing plate 24 embedded in the rubber outer ring 2. The second bearing plate 24 is annularly arranged, and the radial cross section of the second bearing plate 24 is arc-shaped with the arc direction facing the bottom wall of the rubber outer ring 2. The first support plate 23 and the second support plate 24 are disposed opposite to each other, with one end of the first support plate 23 offset from one end of the second support plate 24. The first reinforcing structure includes a first spiral groove 211 circumferentially formed on the inner peripheral wall of the mounting hole 21 and a second spiral groove 11 circumferentially formed on the outer peripheral wall of the metal component 1. The first spiral groove 211 and the second spiral groove 11 are combined to form a threaded groove. The first reinforcing structure also includes a sealing strip 3 disposed in the threaded groove. The sealing strip 3 is spirally arranged and made of hard rubber. The second reinforcing structure includes a first reinforcing edge 4 circumferentially formed on the inner peripheral wall at the beginning of the mounting hole 21. A second reinforcing edge 4 is disposed on the outer peripheral wall of the metal component 1 corresponding to the position of the first reinforcing edge 4. A first reinforcing edge 4 is inserted into a first mating hole 12. The top wall of the first reinforcing edge 4 is smoothly connected to the inner peripheral wall of the mounting hole 21 to form a first force-bearing surface 41. The first reinforcing edge 4 is integrally formed with the rubber outer ring 2. The second reinforcing structure also includes a second reinforcing edge 5 circumferentially disposed on the inner peripheral wall at the end of the mounting hole 21. A second mating hole 13 is provided on the outer peripheral wall of the metal component 1 corresponding to the position of the second reinforcing edge 5. The second reinforcing edge 5 is inserted into the second mating hole 13. The top wall of the second reinforcing edge 5 is smoothly connected to the inner peripheral wall of the mounting hole 21 to form a second force-bearing surface 51. The second reinforcing edge 5 is integrally formed with the rubber outer ring 2.

[0018] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A rubber shock absorber, comprising a metal component for connecting and engaging with external tooling and a rubber outer ring for engaging with the metal component, wherein the rubber outer ring has an axially formed mounting hole, the inner peripheral wall of the mounting hole abutting against the outer peripheral wall of the metal component, and the rubber outer ring has a circumferentially formed pre-set hole for engaging with a pre-embedded bolt threaded on the external tooling, characterized in that: The rubber outer ring is provided with a load-bearing structure to improve the axial and radial load resistance of the rubber outer ring. The rubber outer ring and the metal component are bonded together by a vulcanization process. A first reinforcing structure is provided between the inner peripheral wall of the mounting hole and the outer peripheral wall of the metal component to improve the bonding strength between the rubber outer ring and the metal component during the vulcanization process, thereby improving the axial load resistance of the rubber outer ring. A second reinforcing structure is provided on the inner peripheral wall of the mounting hole opening to cooperate with the metal component and improve the axial load resistance of the rubber outer ring.

2. The rubber shock absorber according to claim 1, characterized in that: The load-bearing structure includes a first load-bearing plate embedded in a rubber outer ring. The first load-bearing plate is arranged in a ring shape, and the radial cross-section of the first load-bearing plate is arranged in an arc shape with the arc direction facing the top wall of the rubber outer ring.

3. A rubber shock absorber according to claim 2, characterized in that: The load-bearing structure also includes a second load-bearing plate embedded in the rubber outer ring. The second load-bearing plate is arranged in a ring shape, and the radial cross section of the second load-bearing plate is arranged in an arc shape with the arc direction facing the bottom wall of the rubber outer ring. The first load-bearing plate and the second load-bearing plate are arranged opposite to each other, and one end of the first load-bearing plate and one end of the second load-bearing plate are offset from each other.

4. A rubber shock absorber according to claim 1, characterized in that: The first reinforcing structure includes a first spiral groove circumferentially formed on the inner peripheral wall of the mounting hole and a second spiral groove circumferentially formed on the outer peripheral wall of the metal component. The first spiral groove and the second spiral groove are combined to form a threaded groove. The first reinforcing structure also includes a sealing strip disposed in the threaded groove. The sealing strip is spirally arranged and is made of hard rubber material.

5. A rubber shock absorber according to claim 1, characterized in that: The second reinforcing structure includes a first reinforcing edge circumferentially disposed on the inner peripheral wall at the beginning of the mounting hole. A first mating hole is disposed on the outer peripheral wall of the metal component corresponding to the position of the first reinforcing edge. The first reinforcing edge is inserted into the first mating hole. The top wall of the first reinforcing edge is connected to the inner peripheral wall of the mounting hole in a smooth curved surface and forms a first force-bearing surface. The first reinforcing edge is integrally formed with the rubber outer ring.

6. A rubber shock absorber according to claim 1, characterized in that: The second reinforcing structure further includes a second reinforcing edge circumferentially disposed on the inner peripheral wall at the end of the mounting hole. A second mating hole is disposed on the outer peripheral wall of the metal component corresponding to the position of the second reinforcing edge. The second reinforcing edge is inserted into the second mating hole. The top wall of the second reinforcing edge is connected to the inner peripheral wall of the mounting hole in a smooth curved surface and forms a second force-bearing surface. The second reinforcing edge is integrally formed with the rubber outer ring.

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