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CN-224229108-U - Timing tensioning wheel bearing with damping fin unit structure

CN224229108UCN 224229108 UCN224229108 UCN 224229108UCN-224229108-U

Abstract

The utility model relates to the technical field of automobile engine parts, in particular to a timing tension wheel bearing with a damping fin unit structure, which comprises an eccentric seat, wherein a bearing main body is sleeved on one side of the eccentric seat, a damping fin main body is arranged between the eccentric seat and a mandrel, an anti-wear layer is arranged between the eccentric seat and the bearing main body, a cavity is formed in the inner side of an inner ring of the bearing main body, a first lubricating grease layer is arranged in the inner side of the cavity, a special-shaped through hole is formed in the bottom end of the inner ring of the bearing main body, a spring is arranged at the top end of the inner side of the cavity, and a rubber tension sleeve is arranged at the top end of the outer side of the spring; according to the utility model, by means of uniform penetration lubrication, the damping is ensured to be constant in the running process of the bearing main body by utilizing the damping fin main body, the wear resistance of the bearing main body and the eccentric seat is enhanced by the wear-resistant layer, and tension is provided for the rubber tensioning sleeve by the spring, so that the rubber tensioning sleeve extrudes the first lubricating grease layer to uniformly seep out of the special-shaped through hole, thereby reducing contact friction, ensuring uniform lubrication and reducing wear of a rotary contact surface.

Inventors

  • ZHAO TENG
  • WANG YANG

Assignees

  • 依必艾传动系统(上海)有限公司

Dates

Publication Date
20260512
Application Date
20250717

Claims (7)

  1. 1. The timing tension wheel bearing with the damping fin unit structure comprises an eccentric seat (1), a mandrel (2) and a bearing main body (3) and is characterized by further comprising a damping fin main body (4), an anti-abrasion layer (5), a sealing component, a cavity (6), a first lubricating grease layer (7), a special-shaped through hole (8), a spring (9) and a rubber tension sleeve (10), wherein the mandrel (2) is arranged on the inner side of the eccentric seat (1), the bearing main body (3) is sleeved on one side of the eccentric seat (1), a plurality of groups of damping fin main bodies (4) are arranged between the eccentric seat (1) and the mandrel (2), the anti-abrasion layer (5) is arranged between the eccentric seat (1) and the bearing main body (3), a sealing component is arranged between the eccentric seat (1) and the mandrel (2), the cavity (6) is formed in the inner side of an inner ring of the bearing main body (3), the first lubricating grease layer (7) is arranged on the inner side of the cavity (6), a plurality of groups of special-shaped through holes (8) are formed in annular equidistance, a plurality of groups of springs (9) are arranged on the inner top of the cavity (6), and the outer side of the spring (9) is provided with equal distance.
  2. 2. The timing tensioning wheel bearing with the damping fin unit structure according to claim 1 is characterized in that a mandrel (2) and a bearing main body (3) are in rotary connection with an eccentric seat (1), and the bearing main body (3) rotates to drive the mandrel (2) to synchronously rotate.
  3. 3. The timing tensioning wheel bearing with the damping fin unit structure according to claim 1, wherein the cavities (6) are annularly distributed, the special-shaped through holes (8) are in conical design, the pore diameter close to the cavities (6) is large, the pore diameter close to the wear-resistant layer (5) is small, and the cavities (6) are in through connection with the special-shaped through holes (8).
  4. 4. The timing tensioning wheel bearing with the damping fin unit structure according to claim 1, wherein a plurality of groups of rubber tensioning sleeves (10) are distributed annularly and equidistantly, the edges of the rubber tensioning sleeves (10) are fixed on the inner top wall of the cavity (6), and the first lubricating grease layer (7) is arranged between the rubber tensioning sleeves (10) and the special-shaped through holes (8).
  5. 5. The timing tensioning wheel bearing with the damping fin unit structure according to claim 1, wherein a plurality of groups of first through holes (401) are formed in one side of the damping fin main body (4) at equal intervals, a limiting ring block (402) is arranged in one side of the eccentric seat (1), and the limiting ring block (402) is arranged at the bottom end of the damping fin main body (4) at the rear end.
  6. 6. The timing tensioner bearing with the damping fin unit structure of claim 5, wherein a second lubricating grease layer (403) is arranged between the limiting ring block (402) and the damping fin main body (4), and the second lubricating grease layer (403) penetrates through the first through hole (401) to penetrate between the damping fin main body (4).
  7. 7. The timing tensioner bearing with the damping fin unit structure of claim 1, wherein the sealing assembly comprises a first sealing ring (501) and a second sealing ring (502), the first sealing ring (501) is arranged at the joint of the front end of the eccentric seat (1) and the mandrel (2), and the second sealing ring (502) is arranged at the joint of the front end of the bearing main body (3) and the wear-resistant layer (5).

Description

Timing tensioning wheel bearing with damping fin unit structure Technical Field The utility model relates to the technical field of automobile engine parts, in particular to a timing tension wheel bearing with a damping fin unit structure. Background Timing tensioner bearings are key components in engine timing systems, whose core function is to ensure that the timing belt or chain maintains a constant tension during operation, thereby precisely coordinating synchronous movement between the crankshaft and camshaft, the performance of which directly affects the operational stability and service life of the engine. The sealing effect of the existing timing tensioning wheel bearing during high-speed operation is possibly limited, lubricating grease is easy to leak in the operation process, uniform lubrication is difficult to ensure, insufficient lubrication is caused, sufficient lubrication of each structural part is difficult to ensure, the bearing is possibly failed prematurely due to insufficient local lubrication, the service life of the bearing is influenced, and the normal operation of an engine is endangered. Therefore, aiming at the condition that the lubrication effect is limited in the running process of the existing timing tensioning wheel bearing, the timing tensioning wheel bearing with the damping fin unit structure can be designed, contact friction is reduced in a uniform penetration lubrication mode, uniform lubrication is guaranteed, abrasion of a rotary contact surface is reduced, and therefore the service life of the timing tensioning wheel bearing is effectively prolonged. Disclosure of utility model The utility model aims to solve the problems that the sealing effect is limited when most timing tensioning wheel bearings are operated at a high speed, lubricating grease is easy to leak in the operation process, uniform lubrication is difficult to ensure, insufficient lubrication is caused, and premature failure of the bearings is possibly caused. The technical scheme includes that the timing tensioning wheel bearing with the damping fin unit structure comprises an eccentric seat, a mandrel, a bearing main body, a damping fin main body, an anti-abrasion layer, a sealing component, a cavity, a first lubricating grease layer, special-shaped through holes, springs and a rubber tensioning sleeve, wherein the mandrel is arranged on the inner side of the eccentric seat, the bearing main body is sleeved on one side of the eccentric seat, a plurality of groups of damping fin main bodies are arranged between the eccentric seat and the mandrel, the anti-abrasion layer is arranged between the eccentric seat and the bearing main body, the sealing component is arranged between the eccentric seat and the mandrel, the cavity is formed in the inner side of an inner ring of the bearing main body, the first lubricating grease layer is arranged in the inner side of the cavity, a plurality of groups of special-shaped through holes are formed in the bottom end of the inner ring of the bearing main body at equal intervals, a plurality of groups of springs are arranged in the inner side top of the cavity at equal intervals, and the rubber tensioning sleeve is arranged on the outer side top of the springs. Preferably, through setting up eccentric seat fixed bearing main part and dabber position, it rotates the dabber and drives the bearing main part and rotate, utilize the damping fin main part to ensure that the bearing main part operation in-process damping is invariable, can more effectually restrain the excitation of belt, in the operation, through the wearability of wearing and tearing of wearing layer reinforcing bearing main part and eccentric seat, utilize the cavity to store first lubricating grease layer in the inner circle of bearing main part, provide tension for the rubber tensioning sleeve through the spring, utilize the rubber tensioning sleeve extrusion first lubricating grease layer to ooze, make first lubricating grease layer evenly ooze through special-shaped through-hole, utilize first lubricating grease layer lubrication wearing and tearing layer, avoid lubricating grease seepage through seal assembly, thereby realize reducing contact friction, ensure even lubrication, reduce the effect of the wearing and tearing of rotatory contact surface, the life of tensioning wheel bearing in right time is prolonged. Preferably, the mandrel and the bearing main body are rotationally connected with the eccentric seat, and the bearing main body rotates to drive the mandrel to synchronously rotate. Preferably, the cavities are annularly distributed, the special-shaped through holes are in conical design, the aperture close to the cavities is large, the aperture close to the wear-resistant layer is small, and the cavities are in through connection with the special-shaped through holes. Preferably, the rubber tensioning sleeve is annularly distributed with a plurality of groups at equal intervals, the edge of th