CN216589799U

CN216589799U - Car take-up pulley bearing with anticreep function

Info

Publication number: CN216589799U
Application number: CN202123049849.2U
Authority: CN
Inventors: 吕娟; 姜维; 孙友勇; 汤兴星; 张巧兰; 姜建国; 姜伟
Original assignee: Jiangsu Hengzhi Machinery Co ltd
Current assignee: Jiangsu Hengzhi Machinery Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-24
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to an automobile tension pulley bearing with a separation prevention function, which comprises a bearing main body and a mandrel main body, wherein the bearing main body comprises a bearing inner ring and a bearing outer ring, a steel ball and a retainer are arranged in a cavity formed between the bearing inner ring and the bearing outer ring, the bearing outer ring is sleeved outside the bearing inner ring, sealing components are arranged on the two sides of the bearing inner ring and the bearing outer ring, an external tension wheel is sleeved outside the bearing main body, a mandrel sleeve is sleeved outside the mandrel main body, an eccentric sleeve is sleeved outside the mandrel sleeve, a bearing installation end is sleeved outside the eccentric sleeve, the bearing main body is arranged on the bearing installation end, a twisting device is arranged on one side of the bearing installation end, a cover plate is arranged on one side of the twisting device, an eccentric hole is arranged on the cover plate, the axis of the eccentric hole is deviated from the axis of the mandrel main body, an eccentric head is arranged in the eccentric hole, the eccentric head is fixedly connected with the mandrel main body, and a support shaft is fixedly arranged on the eccentric head, the supporting shaft is provided with a tensioning wheel, and the tensioning wheel can be pressed towards one side of the belt through the bearing assembly to prevent the belt from loosening.

Description

Car take-up pulley bearing with anticreep function

Technical Field

The utility model relates to the technical field of tensioning wheel bearings, in particular to an automobile tensioning wheel bearing with a separation prevention function.

Background

As one of the important accessories of an engine, an automobile tension pulley bearing is widely used step by step at present, and has a main function of keeping the tension of a belt, so that the engine can work more effectively, however, the service performance of the existing automobile tension pulley bearing on the market is not good, the connection stability of an outer ring of the automobile tension pulley bearing and a shell is poor, after long-time use, the belt is easy to shake due to the movement of the position of the bearing, and the use of people is not facilitated, chinese patent document No. CN2384026Y discloses an automobile tension pulley bearing device, which is characterized in that a bearing inner ring, an elastic retainer ring and a bearing outer ring are arranged on a small shaft, a sealing ring is arranged between the bearing outer ring and the bearing inner ring, the bearing outer ring is directly connected with the belt, but the device does not have the effect of continuously tightening the belt, and the tension pulley assembly is kept at a certain tension force of a transmission belt or directly replaced by adjusting the position of the tension pulley, is both cumbersome and wasteful.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides an automobile tension pulley bearing with a separation prevention function, which aims to solve the technical problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: an automobile tension pulley bearing with a separation prevention function comprises a bearing main body and a mandrel main body, wherein the bearing main body comprises a bearing inner ring and a bearing outer ring, a steel ball and a retainer are arranged in a cavity formed between the bearing inner ring and the bearing outer ring, the bearing outer ring is sleeved on the outer side of the bearing inner ring, sealing assemblies are arranged on two sides of the bearing inner ring and the bearing outer ring, an external tension wheel is sleeved on the outer side of the bearing main body, a core shaft sleeve is sleeved on the outer side of the mandrel main body, an eccentric sleeve is sleeved on the outer surface of the core shaft sleeve, a bearing installation end is sleeved on the outer side of the eccentric sleeve, the bearing main body is arranged on the bearing installation end, a twisting device is arranged on one side of the bearing installation end, a cover plate is arranged on one side of the twisting device, an eccentric hole is formed in the cover plate, the axis of the eccentric hole is deviated from the axis of the mandrel main body, an eccentric head is arranged in the eccentric hole, the eccentric head is fixedly connected with the mandrel main body, a supporting shaft is fixedly arranged on the eccentric head, a tensioning wheel is arranged on the supporting shaft, a sealing assembly is arranged between a bearing inner ring and a bearing outer ring, external pollutants are prevented from influencing the internal work of the bearing main body, a torque is given to the twisting device, the cover plate has a torque opposite to that of the twisting device, and then the eccentric head has a tendency of driving the supporting shaft and the tensioning wheel to compress one side of a belt.

Preferably, the twisting device comprises a spring seat, the spring seat is fixedly arranged on one side of the bearing mounting end, a torsion spring is arranged between the cover plate and the spring seat, one end of the torsion spring is fixedly connected with the spring seat, the other end of the torsion spring is fixedly connected with the cover plate, the torsion spring can have a reaction torque by rotating the cover plate, and the tensioning wheel has an outward force under the action of releasing the torque, so that a loose belt can be tensioned.

In a further preferred mode, the sealing assembly includes a sealing ring and a supporting frame, the supporting frame plays a role of supporting the sealing ring towards the upper side and the lower side, and the sealing ring is tightly combined with the bearing inner ring and the bearing outer ring, so that the sealing performance of the bearing main body is improved.

It is preferred in further, the sealing washer is the ring form, be equipped with the sealing lip on the sealing washer, the sealing washer is fixed set up on the bearing outer lane and with bearing inner race inner wall interference fit, the sealing washer is fixed to be set up on the outer wall of bearing inner race to with bearing inner race interference fit, all be equipped with the annular groove on bearing inner race and the bearing outer lane, annular groove and sealing lip adaptation are through setting up the sealing lip and will seal the lip and imbed the annular groove in, make sealing washer and bearing inner race and bearing outer lane closely combine, improve the leakproofness.

Preferably, the externally-expanding wheel is fixedly provided with an installation sheet, the installation sheet is provided with an installation opening, and the installation and the disassembly of the integral structure and an external device are facilitated through the installation sheet.

In a further preferred mode, the supporting shaft is Z-shaped, and the Z-shaped supporting shaft is beneficial to amplifying the twisting amplitude of the eccentric head and improving the tensioning effect.

Compared with the prior art, the utility model provides an automobile tension wheel bearing with a separation prevention function, which has the following beneficial effects:

the utility model comprises a bearing main body and a mandrel main body, wherein a sealing assembly is arranged between a bearing inner ring and a bearing outer ring, the bearing inner ring and the bearing outer ring are supported towards the top and the bottom through a supporting framework, a sealing ring is tightly combined with the bearing inner ring and the bearing outer ring, a sealing lip is arranged on the sealing ring and is embedded into an annular groove, the sealing property of the integral bearing main body is improved, external pollutants are prevented from influencing the internal work of the bearing main body, a torsional spring can have reaction torque through rotating an adjusting cover plate, a tension wheel has outward force under the action of releasing torque, and the tension wheel is deflected outwards under the action of an eccentric sleeve and an eccentric head under the action of an eccentric hole, so that a loose belt can be tensioned.

Drawings

FIG. 1 is a schematic view of an overall structure of an automobile tension pulley bearing with a separation prevention function according to the present invention;

FIG. 2 is a schematic cross-sectional view of an anti-separation bearing of an automobile tensioner according to the present invention;

fig. 3 is an enlarged view of a portion of a structure in fig. 2.

In the figure: 1. a bearing body; 2. a mandrel body; 3. a bearing inner race; 4. a bearing outer race; 5. steel balls; 6. a holder; 7. an outward expanding wheel; 8. a core sleeve; 9. an eccentric sleeve; 10. a bearing mounting end; 11. a cover plate; 12. an eccentric hole; 13. an eccentric head; 14. a support shaft; 15. a tension wheel; 16. a spring seat; 17. a torsion spring; 18. a seal ring; 19. a support framework; 20. sealing the lip; 21. an annular groove; 22. and (7) mounting the sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, an automobile tensioner bearing with a separation prevention function includes a bearing main body 1 and a mandrel main body 2, where the bearing main body 1 includes a bearing inner ring 3 and a bearing outer ring 4, a steel ball 5 and a retainer 6 are disposed in a cavity formed between the bearing inner ring 3 and the bearing outer ring 4, the bearing outer ring 4 is sleeved on the outer side of the bearing inner ring 3, seal assemblies are disposed on the two sides of the bearing inner ring 3 and the bearing outer ring 4, an external tension wheel 7 is sleeved on the outer side of the bearing main body 1, a core shaft sleeve 8 is sleeved on the outer side of the mandrel main body 2, an eccentric sleeve 9 is sleeved on the outer surface of the core shaft sleeve 8, a bearing installation end 10 is sleeved on the outer side of the eccentric sleeve 9, the bearing main body 1 is disposed on the bearing installation end 10, a twisting device is disposed on one side of the bearing installation end 10, a cover plate 11 is disposed on one side of the twisting device, and an eccentric hole 12 is disposed on the cover plate 11, the axis of the eccentric hole 12 deviates from the axis of the mandrel body 2, an eccentric head 13 is arranged in the eccentric hole 12, the eccentric head 13 is fixedly connected with the mandrel body 2, a supporting shaft 14 is fixedly arranged on the eccentric head 13, a tensioning wheel 15 is arranged on the supporting shaft 14, when the device is installed, a bearing installation end 10, the bearing body 1, the eccentric sleeve 9 and the like are sleeved on the outer side of the mandrel, the eccentric head 13 penetrates into the eccentric hole 12, the twisting device is adjusted by rotating the cover plate 11, so that the whole device has torque opposite to that of the twisting device, under the action of counter torque, the cover plate 11 has an outward force, so that the tensioning wheel 15 is twisted outwards, and under the action of the eccentric sleeve 9, the eccentric head 13 and the eccentric hole 12, the cover plate 11 deflects outwards, so that the tensioning wheel 15 can always prop against the belt outwards, and the belt is in a tensioning state.

In this embodiment, the torsion device includes a spring seat 16, the spring seat 16 is fixedly disposed on one side of the bearing mounting end 10, a torsion spring 17 is disposed between the cover plate 11 and the spring seat 16, one end of the torsion spring 17 is fixedly connected to the spring seat 16, the other end of the torsion spring is fixedly connected to the cover plate 11, and two ends of the torsion spring 17 are respectively fixedly connected to the cover plate 11 and the spring seat 16, so that when the cover plate 11 is rotated, the torsion spring 17 has a torque, and when the cover plate 11 is sleeved on the eccentric head 13, the cover plate 11 has a reaction torque to drive the tension pulley 15 to deflect toward the belt direction.

In this embodiment, the sealing assembly includes a sealing ring 18 and a supporting framework 19, the sealing ring 18 is wrapped on the upper and lower sides of the supporting framework 19, and the sealing framework provides supporting force to the upper and lower sides, so that the sealing ring 18 is more tightly combined with the bearing inner ring 3 and the bearing outer ring 4, and the sealing performance is enhanced.

In this embodiment, sealing washer 18 is the ring form, be equipped with sealing lip 20 on the sealing washer 18, sealing washer 18 is fixed to be set up on bearing inner race 4 and with 4 inner wall interference fit of bearing inner race, sealing washer 18 is fixed to be set up on the outer wall of bearing inner race 3 to with 3 interference fit of bearing inner race, all be equipped with annular groove 21 on bearing inner race 3 and the bearing inner race 4, annular groove 21 and sealing lip 20 adaptation will seal lip 20 embedding and set up in annular groove 21 when the installation, make sealing washer 18 and bearing inner race 3 and bearing inner race 4 be connected inseparabler, have improved the leakproofness of bearing main part 1.

In this embodiment, the outward-opening wheel 7 is fixedly provided with a mounting piece 22, the mounting piece 22 is provided with a mounting opening, and the mounting and dismounting of the whole device and an external device are facilitated through the mounting piece 22.

In this embodiment, the support shaft 14 is in a "Z" shape, and by being arranged in a "Z" shape, the torsion amplitude caused by the deflection of the cover plate 11 is enlarged, so that the tension pulley 15 is more conveniently and tightly combined with the belt.

Example 2:

on the basis of embodiment 1, a sealing ring 18 and a supporting framework 19 are arranged between a bearing inner ring 3 and a bearing outer ring 4, the sealing ring 18 is firstly wrapped on the upper side and the lower side of the supporting framework 19, then a sealing lip 20 of the sealing ring 18 is respectively embedded into an annular groove 21 of the bearing inner ring 3 and the bearing outer ring 4, the sealing framework provides supporting force on the upper side and the lower side, the sealing ring 18 is connected with the bearing inner ring 3 and the bearing outer ring 4 more tightly, and the sealing performance of the whole bearing main body 1 is further improved.

Example 3:

on the basis of embodiment 2, when the belt tensioner is installed, the belt tensioner is detachably connected with an external device through the installation piece 22, the bearing installation end 10, the bearing main body 1, the eccentric sleeve 9 and the like are sleeved on the outer side of the mandrel, the eccentric head 13 penetrates into the eccentric hole 12, the torsional spring 17 is adjusted by rotating the cover plate 11, the torsional spring 17 has a torque, the cover plate 11 is sleeved on the eccentric head 13, the cover plate 11 has a torque opposite to that of the torsional spring 17, under the action of the counter torque, the cover plate 11 has an outward force, the belt tensioner 15 is twisted outward, and under the action of the eccentric sleeve 9, the eccentric head 13 and the eccentric hole 12, the cover plate 11 deflects outward, so that the belt tensioner 15 can always prop against the belt outwards, and the belt is in a tensioning state.

While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and variations may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a car take-up pulley bearing with anticreep function, includes bearing body (1) and dabber main part (2), bearing body (1) is including bearing inner race (3) and bearing outer lane (4), be equipped with steel ball (5) and holder (6), its characterized in that in the cavity that forms between bearing inner race (3) and bearing outer lane (4): the bearing inner race (3) outside is established to bearing inner race (4) cover, bearing inner race (3) is provided with seal assembly with bearing outer race (4) both sides, bearing main part (1) outside cover is equipped with flare wheel (7), dabber main part (2) outside cover is equipped with core axle sleeve (8), core axle sleeve (8) surface cover is equipped with eccentric cover (9), the outside cover of eccentric cover (9) is equipped with bearing installation end (10), bearing main part (1) sets up on bearing installation end (10), bearing installation end (10) one side is provided with wrench movement device, wrench movement device one side is equipped with apron (11), be equipped with eccentric orfice (12) on apron (11), the axis of eccentric orfice (12) is skew with the axis of dabber main part (2), be equipped with eccentric head (13) in eccentric orfice (12), eccentric head (13) and dabber main part (2) fixed connection, a supporting shaft (14) is fixedly arranged on the eccentric head (13), and a tensioning wheel (15) is arranged on the supporting shaft (14).

2. The automobile tensioner bearing with the anti-disengaging function according to claim 1, characterized in that: the twisting device comprises a spring seat (16), the spring seat (16) is fixedly arranged on one side of the bearing installation end (10), a torsion spring (17) is arranged between the cover plate (11) and the spring seat (16), one end of the torsion spring (17) is fixedly connected with the spring seat (16), and the other end of the torsion spring is fixedly connected with the cover plate (11).

3. The automobile tension pulley (15) bearing with the anti-disengaging function according to claim 1, characterized in that: the sealing assembly comprises a sealing ring (18) and a supporting framework (19).

4. The automobile tensioner bearing with the anti-disengaging function according to claim 3, characterized in that: sealing washer (18) are the ring form, be equipped with on sealing washer (18) seal lip (20), sealing washer (18) are fixed set up on bearing inner race (4) and with bearing inner race (4) inner wall interference fit, sealing washer (18) are fixed to be set up on the outer wall of bearing inner race (3) to with bearing inner race (3) interference fit, all be equipped with annular slot (21) on bearing inner race (3) and bearing inner race (4), annular slot (21) and seal lip (20) adaptation.

5. The automobile tensioner bearing with the anti-disengaging function according to claim 1, characterized in that: the outer expanding wheel (7) is fixedly provided with an installation sheet (22), and the installation sheet (22) is provided with an installation opening.

6. The automobile tensioner bearing with the anti-disengaging function according to claim 1, characterized in that: the supporting shaft (14) adopts a Z shape.