Anti-jump high back pressure damping tensioner

Abstract

The utility model relates to chain timing technical field discloses a kind of high back pressure damping tensioner of anti-jumping tooth, including shell, fixed hole and latch, the middle part of shell inside is provided with anti-jumping mechanism, and the anti-jumping mechanism includes inner guide pillar.The utility model in, device is formed double-directional channel by the sleeving structure of inner guide pillar cooperation outer guide pillar, and it is combined with the damping system of the buffer of guide pillar spring and small spring combination small steel ball, high-precision dynamic tensioning and impact collaborative control are realized, outer guide pillar movable structure rapid response chain vibration, inner guide pillar fixed provides rigid reference, small steel ball rolls and disperses high-frequency impact force, small spring continues to compensate wear clearance, and sleeving design constraint axial degree of freedom, avoid eccentric wear, overall modularization package is compatible with sealing and environmental adaptability, finally under complex working condition, stable tension output and long-life operation are achieved, thereby improve the practicability of device.

Description

Technical Field

[0001] This utility model relates to the field of chain timing technology, and in particular to a high back pressure damping tensioner for preventing tooth skipping. Background Technology

[0002] A damping tensioner is a mechanical device primarily used in transmission systems (such as belts and chains). It automatically adjusts tension through built-in damping elements (such as springs, hydraulic pressure, or friction structures) to suppress vibration and slack. Its core function is to maintain stable engagement of transmission components, reduce impact and noise, and extend service life. Commonly found in automotive timing systems and industrial equipment, it also features automatic wear compensation and vibration damping.

[0003] However, most traditional mechanical tensioners rely on a single spring preload, which cannot quickly respond to the instantaneous jump or slack of the chain. They are prone to brief tooth skipping during rapid acceleration or deceleration. In addition, the spring preload is fixed and cannot automatically compensate for chain stretching or guide plate wear. It requires manual adjustment periodically, otherwise the tension will gradually fail, reducing the practicality of the device.

[0004] Therefore, those skilled in the art have provided a high back pressure damping tensioner to prevent tooth skipping, in order to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-backpressure damping tensioner that prevents tooth skipping. The device utilizes a double-guided channel formed by an inner guide post and an outer guide post, combined with a buffering system of guide post springs and a damping system of small springs and small steel balls. This achieves high-precision dynamic tensioning and shock resistance coordinated control. The movable outer guide post quickly responds to chain vibration, while the fixed inner guide post provides a rigid reference. The rolling small steel balls disperse high-frequency impact forces, and the small springs continuously compensate for wear gaps. The sleeve design constrains axial freedom to prevent uneven wear, and the overall modular packaging balances sealing and environmental adaptability. Ultimately, this achieves stable tension output and long-life operation under complex working conditions, thereby improving the practicality of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high back pressure damping tensioner for preventing tooth skipping includes a housing, a fixing hole, and a pin. An anti-tooth skipping mechanism is provided in the center of the housing. The anti-tooth skipping mechanism includes an inner guide post. Snap rings are provided on both sides of the outer wall of the inner guide post. An outer guide post is slidably connected to the outer wall of the inner guide post. A small steel ball is provided at the upper end of the inner guide post. A spring seat is fitted onto the upper end of the outer wall of the small steel ball. A small spring is fixedly connected to the upper end of the inner wall of the spring seat. A guide post spring is fixedly connected to the upper end of the spring seat. A guide post spring is fixedly connected to the upper end of the inner wall of the outer guide post.

[0008] Through the above technical solution, the device forms a dual guiding channel through the sleeve structure of inner guide post and outer guide post. Combined with the buffer of guide post spring and the damping system of small spring and small steel ball, it achieves high-precision dynamic tension and shock resistance coordinated control. The movable structure of outer guide post responds quickly to chain vibration, the fixed inner guide post provides a rigid reference, the rolling of small steel ball disperses high-frequency impact force, and the small spring continuously compensates for wear gaps. The sleeve design restricts axial freedom and avoids uneven wear. The overall modular packaging takes into account sealing and environmental adaptability. Finally, it achieves stable tension output and long service life under complex working conditions, thereby improving the practicality of the device.

[0009] Furthermore, an outer guide post is slidably connected to the center of the interior of the housing, and an inner guide post is fixedly connected to the bottom surface of the interior of the housing;

[0010] Through the above technical solution, the sleeve structure formed by the inner guide post and the outer guide post realizes the single degree of freedom constraint of axial movement, and prevents wear or jamming caused by lateral swaying.

[0011] Furthermore, fixing holes are provided at both ends of the outer wall of the housing, and a pin is slidably connected to the upper end of the housing;

[0012] The above technical solution allows for easy overall fixation of the device, enhancing its stability, while the pin facilitates locking of the device when it is not in operation.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model proposes an anti-skid high back pressure damping tensioner. The device forms a double guiding channel through the sleeve structure of the inner guide post and the outer guide post. Combined with the buffer of the guide post spring and the damping system of the small spring and small steel ball, it achieves high-precision dynamic tensioning and shock resistance coordinated control. The movable structure of the outer guide post responds quickly to chain vibration, the fixed inner guide post provides a rigid reference, the rolling of the small steel ball disperses the high-frequency impact force, the small spring continuously compensates for wear gaps, and the sleeve design restricts axial freedom to avoid uneven wear. The overall modular packaging takes into account sealing and environmental adaptability. Finally, it achieves stable tension output and long service life under complex working conditions, thereby improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a front view of a high back pressure damping tensioner for preventing tooth skipping proposed in this utility model;

[0016] Figure 2 This is a cross-sectional view of the pop-out state of the anti-skid tooth high back pressure damping tensioner proposed in this utility model;

[0017] Figure 3 This is a cross-sectional view of the compressed state of the anti-skid tooth high back pressure damping tensioner proposed in this utility model;

[0018] Figure 4 This is a front view of the pin of a high back pressure damping tensioner for preventing tooth skipping proposed in this utility model;

[0019] Figure 5 This is a top view of a high back pressure damping tensioner for preventing tooth skipping proposed in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Housing; 2. Anti-skip tooth mechanism; 21. Inner guide post; 22. Snap ring; 23. Outer guide post; 24. Small steel ball; 25. Spring seat bracket; 26. Small spring; 27. Guide post spring; 3. Fixing hole; 4. Pin. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-3 This utility model provides a specific implementation method:

[0024] A high back pressure damping tensioner for preventing tooth skipping includes a housing 1, a fixing hole 3, and a pin 4. An anti-tooth skipping mechanism 2 is located in the center of the housing 1. The anti-tooth skipping mechanism 2 includes an inner guide post 21, with retaining rings 22 on both sides of the outer wall of the inner guide post 21. An outer guide post 23 is slidably connected to the outer wall of the inner guide post 21. A small steel ball 24 is located at the upper end of the inner guide post 21. A spring seat 25 is sleeved on the upper end of the outer wall of the small steel ball 24. A small spring 26 is fixedly connected to the upper end of the inner wall of the spring seat 25. A guide post spring 27 is fixedly connected to the upper end of the spring seat 25. A guide post spring 27 is fixedly connected to the upper end of the inner wall of the outer guide post 23. The device... The inner guide post 21, together with the outer guide post 23, forms a double guide channel. Combined with the buffering of the guide post spring 27 and the damping system of the small spring 26 and the small steel ball 24, high-precision dynamic tensioning and shock resistance are achieved through coordinated control. The movable structure of the outer guide post 23 responds quickly to chain vibration, the inner guide post 21 provides a rigid reference, the small steel ball 24 disperses high-frequency impact force through rolling, and the small spring 26 continuously compensates for wear gaps. The sleeve design constrains axial freedom and avoids uneven wear. The overall modular packaging takes into account both sealing and environmental adaptability. Ultimately, stable tension output and long-life operation are achieved under complex working conditions, thereby improving the practicality of the device.

[0025] Reference Figure 3-5 An outer guide post 23 is slidably connected to the middle of the interior of the housing 1, and an inner guide post 21 is fixedly connected to the bottom surface inside the housing 1. The sleeve structure formed by the inner guide post 21 and the outer guide post 23 realizes the single degree of freedom constraint of axial movement, and prevents wear or jamming caused by lateral swaying.

[0026] Fixing holes 3 are provided at both ends of the outer wall of the housing 1. A pin 4 is slidably connected to the upper end of the housing 1. The fixing holes 3 facilitate the overall fixation of the device and enhance its stability. The pin 4 facilitates the locking of the device when it is not in operation.

[0027] Working principle: When the chain is slack, the outer guide post 23 is first pushed down by the guide post spring 27. Then, the force is transmitted to the fixed end of the inner guide post 21 through the small steel ball 24, so that the small spring 26 is compressed and stores energy. When the chain is too tight, the outer guide post 23 moves up, the guide post spring 27 extends and releases the pressure, and the small steel ball 24 rolls to adjust the contact surface to achieve dynamic balance. Finally, the inner guide post 21 remains stationary throughout the process to ensure the stability of the tension reference.

[0028] The following points should be noted in this article:

[0029] 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.

[0030] 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.

[0031] 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. A high back pressure damping tensioner for preventing tooth skipping, comprising a housing (1), a fixing hole (3), and a pin (4), characterized in that: An anti-skipping tooth mechanism (2) is provided in the middle of the interior of the housing (1). The anti-skipping tooth mechanism (2) includes an inner guide post (21), and snap rings (22) are provided on both sides of the outer wall of the inner guide post (21). An outer guide post (23) is slidably connected to the outer wall of the inner guide post (21). A small steel ball (24) is provided at the upper end of the inner guide post (21). A spring seat flower (25) is sleeved on the upper end of the outer wall of the small steel ball (24). A small spring (26) is fixedly connected to the upper end of the inner wall of the spring seat flower (25). A guide post spring (27) is fixedly connected to the upper end of the spring seat flower (25). A guide post spring (27) is fixedly connected to the upper end of the inner wall of the outer guide post (23).

2. The anti-skip tooth high back pressure damping tensioner according to claim 1, characterized in that: An outer guide post (23) is slidably connected to the middle of the interior of the housing (1), and an inner guide post (21) is fixedly connected to the bottom surface inside the housing (1).

3. The anti-skip tooth high back pressure damping tensioner according to claim 1, characterized in that: The outer wall of the housing (1) is provided with fixing holes (3) at both ends, and the upper end of the housing (1) is slidably connected with a pin (4).

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