Gear damper

Abstract

The utility model relates to a damper and discloses a gear damper, which comprises a mounting seat (10), a positioning hole (101) is arranged on the mounting seat (10), an elastic body (11) made of high polymer materials is mounted in the positioning hole (101), the elastic body (11) is radially limited in the positioning hole (101), a through mounting hole (111) is arranged on the elastic body (11), a connecting shaft (12) is in interference fit with the mounting hole (111), and the elastic body (11) and the connecting shaft (12) rotate relatively. The high polymer material serves as a damping material, has good elastic buffering and deformation recovery capacity, can absorb impact energy in the rotating process through self elastic deformation, reduces rigid friction between the connecting shaft and the elastic body, and accordingly improves the stability of relative rotation.

Description

Technical Field

[0001] This utility model relates to damping devices, and more particularly to gear dampers. Background Technology

[0002] In the field of mechanical rotating mechanisms, dampers, as key components for controlling rotational speed, have always been a research hotspot in terms of structural design and performance optimization. Existing technologies, such as the "Damper used on a rotating mechanism" disclosed in Chinese utility model patent CN2861611Y, utilize a damping fluid material filled with a lower cover, upper cover, and gears to achieve a damping effect, and employ a combination of a positioning post and a single screw for installation and fixation. While this solution solves the problem of large installation space associated with traditional double-screw installations, it still has certain limitations in practical applications.

[0003] Existing technology relies on the rigid fit between the positioning pin and the positioning hole to achieve positioning. When applied to vibration scenarios or mechanisms that require frequent disassembly and assembly, the positioning pin is prone to wear due to rigid contact, resulting in a decrease in positioning accuracy. Furthermore, it requires high machining accuracy of the mounting base.

[0004] Its lower cover, upper cover, and gears are made of ABS engineering plastic, and the damping effect mainly depends on the viscosity adjustment of the fluid. However, fluid dampers are subject to the risk of medium loss or performance degradation after long-term use, and have high maintenance costs, making them difficult to adapt to high loads or harsh operating conditions.

[0005] In the existing technology, the gear is sleeved on the hollow shaft of the lower cover through the through hole. Although it is fixed with a single screw, the fit clearance between the shaft and the hole during rotation may affect the damping uniformity, and the rigid connection method cannot effectively buffer instantaneous impact. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a gear damper.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0008] The gear damper includes a mounting base with a positioning hole. An elastomer made of polymer material is installed in the positioning hole and radially limited within the positioning hole. The elastomer has a through mounting hole with an interference fit to a connecting shaft, allowing the elastomer and the connecting shaft to rotate relative to each other.

[0009] Preferably, the end of the connecting shaft is integrally formed with a first damping gear, the mounting base is covered with an end cover, and the other end of the first damping gear is fixed with a positioning post, which is positioned on the end cover.

[0010] Preferably, the end cap is provided with a window, and some teeth of the first damping gear extend out of the window.

[0011] Preferably, the elastomer is an elastomer made of silicone.

[0012] Preferably, the outer contour of the elastomer is polygonal, and the cross-sectional shape of the positioning hole is the same as that of the elastomer.

[0013] Preferably, the device also includes a base, the connecting shaft is fastened to the base, and the end of the mounting seat is integrally formed with a second damping gear, and the mounting seat rotates around the connecting shaft via an elastic body.

[0014] Preferably, a guide seat is also installed inside the base. The guide seat is connected to the mounting base and rotates synchronously, forming a ring-shaped and wavy track between them. The connecting shaft passes through the guide seat and is fastened to the base.

[0015] Preferably, the elastomer is an elastomer made of silicone.

[0016] Preferably, the outer contour of the elastomer is polygonal, and the cross-sectional shape of the positioning hole is the same as that of the elastomer.

[0017] This utility model, by adopting the above technical solution, has significant technical effects:

[0018] In this gear damper, a polymer elastomer within the mounting base positioning hole provides radial restraint, and its through-hole is interference-fitted with the connecting shaft to form a relative rotation structure. As a damping material, the polymer possesses excellent elastic buffering and deformation recovery capabilities, absorbing impact energy during rotation through its own elastic deformation, reducing rigid friction between the connecting shaft and the elastomer, thereby improving the stability of relative rotation.

[0019] The viscoelastic properties of polymer materials can effectively suppress the vibration amplitude during rotation. When the mounting base or connecting shaft rotates, the elastomer can consume inertial kinetic energy through the damping effect, preventing excessive rotation caused by inertia and ensuring the smoothness of the rotation process. This makes the rotation positioning of the mounting base, connecting shaft or other adapter components more accurate and effectively avoids positioning deviation problems caused by uncontrolled rotation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first structure of this utility model.

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure without end caps.

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of a medium-elastic body.

[0023] Figure 4 yes Figure 1A schematic diagram of the structure after the middle connecting shaft and the first damping gear are combined.

[0024] Figure 5 This is a schematic diagram of the second structure of this utility model.

[0025] Figure 6 yes Figure 5 A schematic diagram of the external structure.

[0026] Figure 7 yes Figure 5 A schematic diagram of the structure after the connecting shaft and the elastomer are combined.

[0027] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:

[0028] 10—Mounting base, 11—Elastomer, 12—Connecting shaft, 13—First damping gear, 14—Positioning post, 15—End cover, 16—Base, 17—Second damping gear, 18—Guide seat, 101—Positioning hole, 111—Mounting hole, 151—Window. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-7 The present invention will be further described in detail with reference to the embodiments.

[0030] Example 1

[0031] Gear damper, including mounting base 10, see Figure 1-4 The mounting base 10 has a positioning hole 101, and an elastomer 11 made of polymer material is installed in the positioning hole 101. The elastomer 11 is radially limited within the positioning hole 101. The elastomer 11 has a through mounting hole 111, and a connecting shaft 12 is interference-fitted into the mounting hole 111. The elastomer 11 and the connecting shaft 12 rotate relative to each other. In this embodiment, the connecting shaft 12 is a rotating component. As a damping material, the polymer material has good elastic buffering and deformation recovery capabilities. It can absorb the impact energy during rotation through its own elastic deformation, reduce the rigid friction between the connecting shaft 12 and the elastomer 11, and thus improve the stability of relative rotation. At the same time, the viscoelastic properties of the polymer material can effectively suppress the vibration amplitude during rotation. When the connecting shaft 12 rotates, the elastomer 11 can consume inertial kinetic energy through the damping effect, prevent excessive rotation caused by inertia, ensure the smoothness of the rotation process, and thus make the rotation positioning of the connecting shaft 11 more accurate, effectively avoiding the positioning deviation problem caused by uncontrolled rotation.

[0032] A first damping gear 13 is integrally formed at the end of the connecting shaft 12. The connecting shaft 12 and the first damping gear 13 rotate synchronously. When the first damping gear 13 meshes with the external gear, it provides circumferential damping to the external gear, allowing the external gear to be positioned relatively accurately at the designated position without external power. An end cover 15 is fitted onto the mounting base 10. A positioning post 14 is fixed to the other end of the first damping gear 13. The positioning post 14 is integrally formed on the first damping gear 13. The central axis of the connecting shaft 12, the central axis of the first damping gear 13, and the central axis of the positioning post 14 are on the same straight line. The positioning post 14 is positioned on the end cover 15. The end cover 15 has an end cover positioning hole. The positioning post 14 extends into the end cover positioning hole to form a positioning connection. The positioning post 14 plays a positioning role, ensuring that the first damping gear 13 can rotate stably on the elastic body 11.

[0033] The end cap 15 is provided with a window 151, which facilitates the first damping gear 13 to extend and mesh with other gears. Some teeth on the first damping gear 13 extend out of the window 151.

[0034] Elastomer 11 is an elastomer made of silicone.

[0035] The outer contour of the elastic body 11 is polygonal. In this embodiment, the elastic body 11 is cubic. The cross-sectional shape of the positioning hole 101 is the same as the shape of the elastic body 11.

[0036] Example 2

[0037] Gear damper, including mounting base 10, see Figure 5-7 The mounting base 10 has a positioning hole 101, and an elastomer 11 made of polymer material is installed in the positioning hole 101. The elastomer 11 is radially limited within the positioning hole 101. The elastomer 11 has a through mounting hole 111, and a connecting shaft 12 is interference-fitted into the mounting hole 111. The elastomer 11 and the connecting shaft 12 rotate relative to each other. In this embodiment, the mounting base 10 and the elastomer 11 are rotating components. As a damping material, the polymer material has good elastic buffering and deformation recovery capabilities. It can absorb the impact energy during rotation through its own elastic deformation, reduce the rigid friction between the connecting shaft 12 and the elastomer 11, and thus improve the stability of relative rotation. At the same time, the viscoelastic properties of the polymer material can effectively suppress the vibration amplitude during rotation. When the mounting base 10 rotates, the elastomer 11 can consume inertial kinetic energy through the damping effect, prevent excessive rotation caused by inertia, ensure the smoothness of the rotation process, and thus make the rotation positioning of the mounting base 10 more accurate, effectively avoiding the positioning deviation problem caused by uncontrolled rotation.

[0038] The damper also includes a base 16, with the connecting shaft 12 fastened to the base 16. The end of the mounting seat 10 is integrally formed with a second damping gear 17. The mounting seat 10 rotates around the connecting shaft 12 via an elastic body 11. When the power source is cut off, the mounting seat 10 will not rotate excessively due to inertia, ensuring the accurate positioning of the mounting seat 10.

[0039] A guide seat 18 is also installed inside the base 16. The guide seat 18 is connected to the mounting base 10 and rotates synchronously. The two form a ring-shaped and wave-shaped track. The guide seat 18 and the mounting base 10 form a rotating cam. The rotating cam can drive other accessories to perform lifting and lowering movements. The connecting shaft 12 passes through the guide seat 18 and is fastened to the base 16.

[0040] Elastomer 11 is an elastomer made of silicone.

[0041] The outer contour of the elastic body 11 is polygonal. In this embodiment, the elastic body 11 is triangular. The cross-sectional shape of the positioning hole 101 is the same as the shape of the elastic body 11.

[0042] Example 3

[0043] Example 3 is basically the same as Example 1 or 2, except that the elastomer 11 is an elastomer made of rubber.

Claims

1. A gear damper comprising a mounting seat (10) provided with a positioning hole (101), characterized in that: An elastomer (11) made of polymer material is installed in the positioning hole (101). The elastomer (11) is radially limited in the positioning hole (101). The elastomer (11) is provided with a through mounting hole (111). A connecting shaft (12) is interference-fitted in the mounting hole (111). The elastomer (11) and the connecting shaft (12) rotate relative to each other.

2. The gear damper according to claim 1, characterized in that: The end of the connecting shaft (12) is integrally formed with a first damping gear (13), and the mounting base (10) is covered with an end cover (15). The other end of the first damping gear (13) is fixed with a positioning post (14), which is positioned on the end cover (15).

3. The gear damper of claim 2, wherein: The end cap (15) has a window (151) on it, and some teeth of the first damping gear (13) extend out of the window (151).

4. The gear damper of claim 1, wherein: The elastomer (11) is an elastomer made of silicone.

5. The gear damper of claim 1, wherein: The outer contour of the elastomer (11) is polygonal, and the cross-sectional shape of the positioning hole (101) is the same as that of the elastomer (11).

6. The gear damper of claim 1, wherein: It also includes a base (16), a connecting shaft (12) fastened to the base (16), and a second damping gear (17) integrally formed at the end of the mounting seat (10). The mounting seat (10) rotates around the connecting shaft (12) via an elastic body (11).

7. The gear damper of claim 6, wherein: A guide seat (18) is also installed inside the base (16). The guide seat (18) is connected to the mounting base (10) and rotates synchronously. A ring-shaped and wave-shaped track is formed between the two. The connecting shaft (12) passes through the guide seat (18) and is fastened to the base (16).

8. The gear damper of claim 6, wherein: The elastomer (11) is an elastomer made of silicone.

9. The gear damper of claim 6, wherein: The outer contour of the elastomer (11) is polygonal, and the cross-sectional shape of the positioning hole (101) is the same as that of the elastomer (11).

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