Timing tensioning wheel bearing with damping fin unit structure
By designing a timing tensioner bearing with a damping plate unit structure, the problem of grease leakage during high-speed operation was solved, achieving uniform lubrication and extending the service life of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EPISCHER DRIVE SYST (SHANGHAI) CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-12
AI Technical Summary
Existing timing tensioner bearings have limited sealing performance at high speeds, making it easy for grease to leak, resulting in insufficient lubrication and affecting the bearing's service life.
A timing tensioner bearing with a damping plate unit structure is designed. Through the combination of an eccentric seat, a spindle, a bearing body, a damping plate body, an anti-wear layer, a sealing component, a cavity, a grease layer, and a rubber tensioning sleeve, uniform penetration lubrication is achieved, contact friction is reduced, and grease leakage is avoided.
It effectively suppresses belt vibration, enhances wear resistance, ensures uniform lubrication, and extends bearing service life.
Smart Images
Figure CN224229108U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive engine parts technology, and in particular to a timing tensioner bearing with a damping plate unit structure. Background Technology
[0002] The timing tensioner bearing is a key component of the engine timing system. Its core function is to ensure that the timing belt or chain maintains a constant tension during operation, thereby precisely coordinating the synchronous movement between the crankshaft and the camshaft. Its performance directly affects the engine's working stability and service life.
[0003] Current timing tensioner bearings may have limited sealing performance at high speeds, making it easy for grease to leak during operation. This can lead to insufficient lubrication, making it difficult to ensure adequate lubrication of all structural parts. Insufficient lubrication in certain areas can cause premature bearing failure, affecting bearing life and endangering normal engine operation.
[0004] Therefore, in view of the limited lubrication effect of existing timing tensioner bearings during operation, a timing tensioner bearing with a damping plate unit structure can be designed. By uniformly penetrating lubrication, contact friction can be reduced, uniform lubrication can be ensured, wear on the rotating contact surface can be reduced, and the service life of the timing tensioner bearing can be effectively extended. Utility Model Content
[0005] To overcome the problem that most timing tensioner bearings may have limited sealing effect when operating at high speeds, and that grease is prone to leakage during operation, making it difficult to ensure uniform lubrication and resulting in insufficient lubrication, which may lead to premature bearing failure, this utility model is proposed.
[0006] The technical solution of this utility model is as follows: a timing tensioner bearing with a damping plate unit structure, comprising an eccentric seat, a spindle, a bearing body, damping plate bodies, an anti-wear layer, a sealing assembly, a cavity, a first grease layer, irregularly shaped through holes, springs, and a rubber tensioning sleeve. The spindle is arranged inside the eccentric seat, and the bearing body is sleeved on one side of the eccentric seat. Multiple sets of damping plate bodies are arranged between the eccentric seat and the spindle. An anti-wear layer is arranged between the eccentric seat and the bearing body. A sealing assembly is arranged between the eccentric seat and the spindle. A cavity is opened inside the inner ring of the bearing body. A first grease layer is arranged inside the cavity. Multiple sets of irregularly shaped through holes are arranged in an annular shape at equal intervals at the bottom end of the inner ring of the bearing body. Multiple sets of springs are arranged in an annular shape at equal intervals at the top end of the inner side of the cavity. A rubber tensioning sleeve is arranged at the top end of the outer side of the spring.
[0007] Preferably, by setting an eccentric seat to fix the position of the bearing body and the spindle, rotating the spindle drives the bearing body to rotate. The damping plate body ensures constant damping during the operation of the bearing body, which can more effectively suppress belt vibration. During operation, the wear resistance of the bearing body and the eccentric seat is enhanced by the anti-wear layer. The first grease layer is stored in the inner ring of the bearing body by the cavity. The spring provides tension to the rubber tensioning sleeve, and the rubber tensioning sleeve squeezes the first grease layer to seep out, so that the first grease layer seeps out evenly through the irregular through hole. The first grease layer lubricates the anti-wear layer. The sealing component prevents grease leakage, thereby reducing contact friction, ensuring uniform lubrication, reducing wear on the rotating contact surface, and extending the service life of the timing tensioner bearing.
[0008] Preferably, the spindle and bearing body are rotatably connected to the eccentric seat, and the rotation of the bearing body drives the spindle to rotate synchronously.
[0009] Preferably, the cavities are arranged in a ring shape, and the irregular through holes are designed in a conical shape, with larger diameters near the cavities and smaller diameters near the wear-resistant layer, and the cavities and irregular through holes are connected in a continuous manner.
[0010] Preferably, multiple sets of rubber tensioning sleeves are distributed in annular shape at equal intervals, the edges of the rubber tensioning sleeves are fixed to the inner top wall of the cavity, and the first grease layer is disposed between the rubber tensioning sleeves and the irregular through holes.
[0011] Preferably, multiple sets of first through holes are equidistantly opened on one side of the damping plate body, and a limiting ring block is provided on one side of the eccentric seat. The limiting ring block is located at the bottom end of the damping plate body at the rear end.
[0012] Preferably, a second grease layer is provided between the limiting ring block and the damping plate body, and the second grease layer penetrates through the first through hole and permeates into the damping plate body.
[0013] Preferably, the sealing assembly includes a first sealing ring and a second sealing ring, with the first sealing ring provided at the front end joint of the eccentric seat and the spindle, and the second sealing ring provided at the front end joint of the bearing body and the wear-resistant layer.
[0014] The beneficial effects of this utility model are:
[0015] During operation, the rotating spindle drives the bearing body to rotate. The damping plate body ensures constant damping during the operation of the bearing body, effectively suppressing belt vibration. The wear-resistant layer enhances the wear resistance of the bearing body and eccentric seat. The spring provides tension to the rubber tensioning sleeve, which squeezes the first grease layer out of the cavity. The first grease layer is evenly seeped out through the irregular through-hole and lubricated by the first grease layer. This solves the problem that most timing tensioner bearings may have limited sealing effect at high speeds, and grease is prone to leakage during operation, making it difficult to ensure uniform lubrication and potentially leading to premature bearing failure. This extends the service life of the timing tensioner bearing. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of a timing tensioner bearing with a damping plate unit structure according to this utility model.
[0017] Figure 2 The diagram shown is a three-dimensional cross-sectional view of a timing tensioner bearing with a damping plate unit structure according to this utility model.
[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the bearing body of a timing tensioner bearing with a damping plate unit structure according to this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the damping plate body of a timing tensioner bearing with a damping plate unit structure according to this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Eccentric seat; 2. Mandrel; 3. Bearing body; 4. Damping plate body; 401. First through hole; 402. Limiting ring block; 403. Second grease layer; 5. Anti-wear layer; 501. First sealing ring; 502. Second sealing ring; 6. Cavity; 7. First grease layer; 8. Irregular through hole; 9. Spring; 10. Rubber tensioning sleeve. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment: a timing tensioner bearing with a damping plate unit structure, including an eccentric seat 1, a spindle 2, a bearing body 3, damping plate bodies 4, an anti-wear layer 5, a sealing assembly, a cavity 6, a first grease layer 7, a shaped through hole 8, a spring 9, and a rubber tensioning sleeve 10. The spindle 2 is disposed inside the eccentric seat 1, and the bearing body 3 is sleeved on one side of the eccentric seat 1. The spindle 2 and the bearing body 3 are rotatably connected to the eccentric seat 1. The rotation of the bearing body 3 drives the spindle 2 to rotate synchronously. Multiple sets of damping plate bodies 4 are disposed between the eccentric seat 1 and the spindle 2. The damping plate bodies 4 ensure constant damping during the operation of the bearing body 3, effectively suppressing belt vibration. An anti-wear layer 5 is disposed between the eccentric seat 1 and the bearing body 3. A sealing assembly is disposed between the eccentric seat 1 and the spindle 2. A cavity 6 is provided on the inner side of the inner ring of the bearing body 3. The cavity 6 is distributed in a ring shape. A first grease layer 7 is provided on the inner side of the cavity 6. Multiple sets of irregularly shaped through holes 8 are provided at equal intervals in a ring shape at the bottom end of the inner ring of the bearing body 3. The irregularly shaped through holes 8 are tapered, with a larger diameter near the cavity 6 and a smaller diameter near the anti-wear layer 5. The cavity 6 and the irregularly shaped through holes 8 are connected. The irregular design of the irregularly shaped through holes 8 can effectively prevent grease blockage. Multiple sets of springs 9 are provided at equal intervals in a ring shape at the top of the inner side of the cavity 6. A rubber tension sleeve 10 is provided at the top of the outer side of the spring 9. Multiple sets of rubber tension sleeves 10 are distributed at equal intervals in a ring shape. The edge of the rubber tension sleeve 10 is fixed to the inner top wall of the cavity 6. The first grease layer 7 is provided between the rubber tension sleeve 10 and the irregularly shaped through holes 8. The first grease layer 7 seeps out by the pressure of the rubber tension sleeve 10.
[0023] Please see Figure 2 and Figure 4 In this embodiment, multiple sets of first through holes 401 are equidistantly formed on one side of the damping plate body 4. A limiting ring block 402 is provided on one side of the eccentric seat 1. The limiting ring block 402 is located at the bottom end of the rear damping plate body 4. A second grease layer 403 is provided between the limiting ring block 402 and the damping plate body 4. The second grease layer 403 penetrates through the first through holes 401 and permeates into the damping plate body 4. The limiting ring block 402 limits the multiple sets of damping plate bodies 4 to prevent the damping plate bodies 4 from shifting and failing. The second grease layer 403 lubricates the damping plate bodies 4. The first through holes 401 ensure that the damping plate bodies 4 are properly positioned. The second grease layer 403 can normally penetrate between the damping sheet bodies 4, reducing friction between the damping sheet bodies 4 and effectively extending the service life of the damping sheet bodies 4; the sealing assembly includes a first sealing ring 501 and a second sealing ring 502. The first sealing ring 501 is provided at the front end joint of the eccentric seat 1 and the spindle 2, and the second sealing ring 502 is provided at the front end of the bearing body 3 and the joint of the anti-wear layer 5. The first sealing ring 501 prevents the second grease layer 403 between the damping sheet bodies 4 from seeping out, and the second sealing ring 502 prevents the first grease layer 7 on the anti-wear layer 5 from seeping out, ensuring sufficient lubrication of the grease.
[0024] During operation, the rotating spindle 2 drives the bearing body 3 to rotate, and the limiting ring block 402 abuts against the damping plate body 4. The damping plate body 4 ensures that the damping of the bearing body 3 is constant during operation, which more effectively suppresses the vibration of the belt. The second grease layer 403 will penetrate into each damping plate body 4 through the first through hole 401, increasing the service life of the damping plate body 4.
[0025] Meanwhile, the wear resistance of the bearing body 3 and the eccentric seat 1 is enhanced by the anti-wear layer 5. At this time, the spring 9 provides tension to the rubber tensioning sleeve 10. The rubber tensioning sleeve 10 squeezes the first grease layer 7 out of the cavity 6, so that the first grease layer 7 seeps out evenly through the irregular through hole 8. The first grease layer 7 is used to lubricate the anti-wear layer 5. In addition, the first sealing ring 501 prevents the second grease layer 403 between the damping plate bodies 4 from seeping out, and the second sealing ring 502 prevents the first grease layer 7 on the anti-wear layer 5 from seeping out, ensuring that the grease is fully lubricated.
[0026] Through the above steps, by setting the eccentric seat 1 to fix the position of the bearing body 3 and the spindle 2, rotating the spindle 2 drives the bearing body 3 to rotate. The damping plate body 4 ensures that the damping of the bearing body 3 is constant during operation, which can more effectively suppress belt vibration. During operation, the wear resistance of the bearing body 3 and the eccentric seat 1 is enhanced by the anti-wear layer 5. The first grease layer 7 is stored in the inner ring of the bearing body 3 by the cavity 6. The spring 9 provides tension to the rubber tensioning sleeve 10. The rubber tensioning sleeve 10 squeezes the first grease layer 7 to seep out, so that the first grease layer 7 seeps out evenly through the irregular through hole 8. The first grease layer 7 lubricates the anti-wear layer 5. The sealing component prevents grease leakage, thereby reducing contact friction, ensuring uniform lubrication, and reducing wear on the rotating contact surface.
[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A timing tensioner bearing with a damping plate unit structure, comprising an eccentric seat (1), a spindle (2), and a bearing body (3), characterized in that: It also includes a damping plate body (4), an anti-wear layer (5), a sealing component, a cavity (6), a first grease layer (7), a shaped through hole (8), a spring (9), and a rubber tensioning sleeve (10). A spindle (2) is provided on the inner side of the eccentric seat (1). A bearing body (3) is sleeved on one side of the eccentric seat (1). Multiple sets of damping plate bodies (4) are provided between the eccentric seat (1) and the spindle (2). An anti-wear layer (5) is provided between the eccentric seat (1) and the bearing body (3). A sealing component is provided between the eccentric seat (1) and the spindle (2). A cavity (6) is opened on the inner side of the inner ring of the bearing body (3). A first grease layer (7) is provided on the inner side of the cavity (6). Multiple sets of shaped through holes (8) are opened in a ring at equal intervals at the bottom of the inner ring of the bearing body (3). Multiple sets of springs (9) are arranged in a ring at equal intervals at the top of the inner side of the cavity (6). A rubber tensioning sleeve (10) is provided on the top of the outer side of the spring (9).
2. The timing tensioner bearing with damping plate unit structure according to claim 1, characterized in that: The spindle (2) and bearing body (3) are rotatably connected to the eccentric seat (1), and the rotation of the bearing body (3) drives the spindle (2) to rotate synchronously.
3. The timing tensioner bearing with damping plate unit structure according to claim 1, characterized in that: The cavity (6) is distributed in a ring shape, and the irregular through hole (8) is designed in a conical shape. The diameter of the hole near the cavity (6) is large, and the diameter of the hole near the wear-resistant layer (5) is small. The cavity (6) and the irregular through hole (8) are connected in a continuous manner.
4. The timing tensioner bearing with damping plate unit structure according to claim 1, characterized in that: The rubber tensioning sleeves (10) are arranged in multiple sets in annular and equidistant manner. The edge of the rubber tensioning sleeves (10) is fixed to the inner top wall of the cavity (6). The first grease layer (7) is disposed between the rubber tensioning sleeves (10) and the irregular through hole (8).
5. A timing tensioner bearing with a damping plate unit structure according to claim 1, characterized in that: Multiple sets of first through holes (401) are equidistantly opened on one side of the damping plate body (4), and a limiting ring block (402) is provided on one side of the eccentric seat (1). The limiting ring block (402) is located at the bottom end of the damping plate body (4) at the rear end.
6. A timing tensioner bearing with a damping plate unit structure according to claim 5, characterized in that: A second grease layer (403) is provided between the limiting ring block (402) and the damping sheet body (4), and the second grease layer (403) penetrates through the first through hole (401) and permeates into the damping sheet body (4).
7. A timing tensioner bearing with a damping plate unit structure according to claim 1, characterized in that: The sealing assembly includes a first sealing ring (501) and a second sealing ring (502). The first sealing ring (501) is provided at the front end joint of the eccentric seat (1) and the spindle (2), and the second sealing ring (502) is provided at the front end of the bearing body (3) and the joint of the anti-wear layer (5).