Adjustable buffering and damping tensioner
By employing a precision fit and a multi-spring rubber ring design in the tensioner, the problem of vibration and noise in existing tensioners under dynamic loads has been solved, achieving adjustable tension force and smooth movement, and improving the stability and durability of the transmission system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN CHANGJIE MASCH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-15
AI Technical Summary
Existing tensioners lack effective buffering and shock absorption designs, which makes them prone to vibration, noise, and accelerated wear when subjected to dynamic loads or impacts, making it difficult to meet the requirements of smooth operation and reliability.
Through the precise coordination of the upper and lower components inside the housing, combined with the design of multiple springs and rubber rings, the tension can be adjusted, and the guide column structure ensures the smoothness of movement. The overall design integrates adjustment, buffering and shock absorption functions.
It significantly improves the stability, durability, and user experience of the transmission system, reduces noise and wear, and ensures smooth and reliable movement as well as protection of the internal structure.
Smart Images
Figure CN224245347U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tensioner technology, and in particular to an adjustable buffer and shock-absorbing tensioner. Background Technology
[0002] In many mechanical transmission systems, such as engine timing systems, industrial conveying equipment, and bicycle chain drives, tensioning devices are key components that ensure stable and efficient system operation. Their core function is to maintain appropriate tension in transmission components such as chains and belts, preventing problems such as tooth skipping, slippage, increased noise, accelerated wear, and even transmission failure caused by slack.
[0003] In the existing technology, most tensioners usually only have basic tensioning functions. Their structures are relatively simple and often lack effective buffering and shock absorption designs. As a result, when subjected to dynamic loads or impacts, they are prone to vibration and noise, and may accelerate the wear of related transmission components, making it difficult to meet the requirements for smooth operation and reliability.
[0004] Therefore, those skilled in the art have provided an adjustable buffer and shock absorber tensioner to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an adjustable buffer and shock-absorbing tensioner. This tensioner achieves adjustable tension through the precise cooperation of the upper and lower components inside the housing, and effectively buffers impact vibration by using multiple springs and rubber rings to reduce noise and wear. At the same time, the guide column structure ensures smooth and reliable movement. The overall design highly integrates adjustment, buffering and shock absorption functions, which significantly improves the stability, durability and user experience of the transmission system.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An adjustable buffer and shock absorber tensioner includes a housing, a spring seat pin is provided at the lower end of the housing, a small steel ball is provided at the upper end of the spring seat pin, a spring seat spring is provided at the upper end of the small steel ball, a spring seat flower is sleeved on the upper end of the spring seat pin, and a guide post spring is sleeved on the outer side of the spring seat flower.
[0008] The upper inner end of the housing is provided with a guide post, the upper inner end of the guide post is provided with a threaded pin, the upper outer end of the housing is provided with a guide post base plate, the upper end of the guide post base plate is engaged with a plastic head, the middle of the plastic head is inserted with a pin, and a bracket is riveted to one side end face of the housing by rivets.
[0009] Through the above technical solution, the tensioner achieves adjustable tension force through the precise cooperation of the upper and lower components inside the housing, and effectively buffers impact vibration by using multiple springs and rubber rings to reduce noise and wear. At the same time, the guide column structure ensures smooth and reliable movement. The overall design highly integrates adjustment, buffering and shock absorption functions, significantly improving the stability, durability and user experience of the transmission system.
[0010] Furthermore, a rubber ring is provided on the upper outer end of the guide post, and the upper end of the rubber ring is attached to the lower end of the guide post base plate;
[0011] Through the above technical solution, the fit between the rubber ring and the guide post base plate can effectively reduce the shaking and noise of the guide post during movement, enhance the stability of positioning, and provide a certain amount of cushioning to protect the internal structure.
[0012] Furthermore, the plug portion of the pin is fitted against the inner surface of the bracket;
[0013] Through the above technical solution, the tight fit between the pin and the inner surface of the bracket ensures that the adjusted position can be firmly locked, preventing accidental loosening or displacement during use, and improving the stability and reliability of the tension.
[0014] Furthermore, a cover is provided on one side of the interior of the housing;
[0015] Through the above technical solution, the cover can effectively seal part of the space inside the shell, preventing dust, impurities and other contaminants from entering the critical moving area, thus playing a role in dust prevention and dirt prevention, protecting the internal parts and extending the service life of the tensioner.
[0016] Furthermore, the upper inner end of the spring seat flower is in contact with the spring seat spring;
[0017] Through the above technical solution, the tight fit between the spring seat flower and the spring seat spring ensures that the spring seat spring can be stably and evenly stressed, avoiding the spring seat spring from shifting or shaking during movement, thereby ensuring the stability and reliability of the buffering and shock absorption effect.
[0018] This utility model has the following beneficial effects:
[0019] 1. This utility model proposes an adjustable buffer and shock-absorbing tensioner. Through the precise cooperation of the lower end spring seat, spring seat spring, small steel ball, spring seat pin and the upper end guide post, guide post base plate, plastic head and pin inside the housing, the tensioner not only achieves adjustable tension to adapt to different working conditions, but also effectively absorbs and buffers the impact and vibration during operation by using the combination of multiple springs and rubber rings, reducing noise and wear. At the same time, the guide post and other structures ensure the smoothness and reliability of the movement. The overall design highly integrates adjustment, buffering and shock absorption functions, which significantly improves the stability, durability and user experience of the transmission system. Attached Figure Description
[0020] Figure 1 This is an isometric view of an adjustable buffer and shock absorber tensioner proposed in this utility model;
[0021] Figure 2 This is an overall cross-sectional view of an adjustable buffer and shock absorber tensioner proposed in this utility model;
[0022] Figure 3 This is a front sectional view of an adjustable buffer and shock absorber tensioner proposed in this utility model;
[0023] Figure 4 This is a rear sectional view of an adjustable buffer and shock absorber tensioner proposed in this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Housing; 2. Spring seat pin; 3. Spring seat spring; 4. Small steel ball; 5. Spring seat pin; 6. Guide post spring; 7. Guide post; 8. End cap; 9. Rivet; 10. Bracket; 11. Threaded pin; 12. Rubber ring; 13. Guide post base plate; 14. Plastic head; 15. Pin. Detailed Implementation
[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0027] Reference Figure 1-4This utility model provides a specific embodiment: an adjustable buffer and shock absorber tensioner, including a housing 1, a spring seat pin 5 is provided at the lower end of the housing 1, a small steel ball 4 is provided at the upper end of the spring seat pin 5, a spring seat spring 3 is provided at the upper end of the small steel ball 4, a spring seat flower 2 is sleeved on the upper end of the spring seat pin 5, and a guide post spring 6 is sleeved on the outer side of the spring seat flower 2.
[0028] A guide post 7 is provided at the upper inner end of the housing 1, and a threaded pin 11 is provided at the upper inner end of the guide post 7. A guide post base plate 13 is provided at the upper outer end of the housing 1. A plastic head 14 is engaged at the upper end of the guide post base plate 13, and a pin 15 is inserted into the middle of the plastic head 14. A bracket 10 is riveted to one side end face of the housing 1 by a rivet 9.
[0029] The tensioner achieves adjustable tension through the precise matching of the upper and lower components inside the housing 1, and effectively buffers impact vibrations and reduces noise and wear by using multiple springs and rubber rings 12. At the same time, the guide post 7 structure ensures smooth and reliable movement. The overall design highly integrates adjustment, buffering and shock absorption functions, significantly improving the stability, durability and user experience of the transmission system.
[0030] A rubber ring 12 is provided on the upper outer end of the guide post 7. The upper end of the rubber ring 12 fits against the lower end of the guide post base plate 13. The fit between the rubber ring 12 and the guide post base plate 13 can effectively reduce the shaking and noise of the guide post 7 during movement, enhance the stability of positioning, and provide a certain amount of cushioning to protect the internal structure. The plug part of the pin 15 fits against the inner surface of the bracket 10. The tight fit between the pin 15 and the inner surface of the bracket 10 ensures that the adjusted position can be firmly locked, preventing accidental loosening or displacement during use, and improving the stability and reliability of the tension. The housing 1 has a cover 8 on one side inside. The cover 8 can effectively seal part of the space inside the housing 1, preventing dust and impurities from entering the key moving areas, thus protecting the internal parts and extending the service life of the tensioner. The upper part of the spring seat 2 is in contact with the spring seat 3. The close contact between the spring seat 2 and the spring seat 3 ensures that the spring seat 3 can be stably and evenly stressed, preventing the spring seat 3 from shifting or shaking during movement, thus ensuring the stability and reliability of the buffering and shock absorption effect.
[0031] Working Principle: When the transmission chain or belt needs tension, the guide post 7, under the thrust of the guide post spring 6, applies preload to the transmission components through the guide post base plate 13 and the plastic head 14. The elastic buffer unit composed of the spring seat 2, spring seat spring 3, small steel ball 4, and spring seat pin 5 at the lower end of the housing 1 absorbs and mitigates impacts and vibrations during transmission. The rubber ring 12 further enhances the buffering effect and reduces noise. When tension needs to be adjusted, the position of the guide post 7 can be adjusted by rotating the threaded pin 11, thereby precisely adjusting the tension. After adjustment, the pin 15 is inserted into the corresponding hole of the bracket 10 to lock it in place. Through the precise cooperation of these components, the entire system achieves adjustable and stable tensioning of the transmission components and effectively suppresses vibration and noise.
[0032] The following points should be noted in this article:
[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable buffer shock absorber tensioner, comprising a housing (1), characterized in that: A spring seat pin (5) is provided at the lower end of the inner part of the housing (1). A small steel ball (4) is provided at the upper end of the spring seat pin (5). A spring seat spring (3) is provided at the upper end of the small steel ball (4). A spring seat flower (2) is sleeved on the upper end of the spring seat pin (5). A guide post spring (6) is sleeved on the outer side of the spring seat flower (2). The upper inner end of the housing (1) is provided with a guide post (7), the upper inner end of the guide post (7) is provided with a threaded pin (11), the upper outer end of the housing (1) is provided with a guide post base plate (13), the upper end of the guide post base plate (13) is fitted with a plastic head (14), the middle part of the plastic head (14) is inserted with a pin (15), and a bracket (10) is riveted to one side end face of the housing (1) by a rivet (9).
2. The adjustable buffer shock absorber tensioner according to claim 1, characterized in that: A rubber ring (12) is provided on the upper outer end of the guide post (7), and the upper end of the rubber ring (12) is attached to the lower end of the guide post base plate (13).
3. The adjustable buffer shock absorber tensioner according to claim 1, characterized in that: The plug portion of the pin (15) is attached to the inner surface of the bracket (10).
4. The adjustable buffer shock absorber tensioner according to claim 1, characterized in that: A cover (8) is provided on one side of the inside of the housing (1).
5. An adjustable buffer shock absorber tensioner according to claim 1, characterized in that: The upper inner part of the spring seat flower (2) is in contact with the spring seat spring (3).