Tensioner pulley bearing anti-throwout structure

Abstract

The utility model discloses a kind of tensioner pulley bearing anti-extrusion structures, including pulley, the bearing chamber being set on pulley, bearing, the bearing is installed in bearing chamber, and rubber sleeve for increasing the bearing and bearing chamber's holding force is equipped between the bearing and bearing chamber, the side cover of fixed connection is equipped in the side for installing the bearing of bearing chamber, first installation part is equipped on the rubber sleeve, the side of rubber sleeve towards rubber sleeve is equipped with the second installation part cooperation with the first installation part bevel. By setting rubber sleeve between bearing and bearing chamber, effectively increase the holding force between bearing and bearing chamber, cooperate the setting of side cover and the bevel cooperation structure between rubber sleeve and side cover, the stability of bearing installation can be improved, prevent bearing from extruding in use process, prolong the service life of tensioner pulley.

Description

Technical Field

[0001] This utility model relates to a structure for preventing the tension belt pulley bearing from coming off. Background Technology

[0002] After the tensioned pulley is fitted with a bearing, during the high-speed operation of the pulley, the bearing may run out of its bearing position due to insufficient clamping force caused by the heat of the product. This can lead to belt misalignment, abnormal noise, and other malfunctions. The stability of its operation directly affects the efficiency and lifespan of the entire transmission system. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a tensioning pulley bearing anti-dislodgement structure. This structure enhances the bearing's clamping force within the bearing housing by installing an interference fit rubber sleeve inside the bearing housing and a side cover that mates with the rubber sleeve and bearing on the outside of the bearing housing.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tensioning pulley bearing anti-dislodgement structure, comprising a pulley, a bearing housing disposed on the pulley, and a bearing, wherein the bearing is installed in the bearing housing, and a rubber sleeve is provided between the bearing and the bearing housing to increase the clamping force between the bearing and the bearing housing, a side cover is fixedly connected to the side of the bearing housing for mounting the bearing, a first mounting part is provided on the rubber sleeve, and a second mounting part is provided on the side of the side cover facing the rubber sleeve to cooperate with the inclined surface of the first mounting part.

[0005] As a further improvement of this utility model, the side cover facing the bearing is also provided with a limiting part that restricts the axial movement of the bearing, and the limiting part abuts against the end of the outer ring of the bearing.

[0006] As a further improvement of this utility model, the bearing housing is provided with a threaded groove on one side for mounting the bearing, and the side cover is provided with a threaded shaft section that mates with the threaded groove.

[0007] As a further improvement of this utility model, the bearing chamber is provided with a first abutting surface and a second abutting surface, the first abutting surface abuts against the top of the second mounting part, and the side cover is provided with a stepped surface that cooperates with the second abutting surface.

[0008] As a further improvement of this utility model, the side cover is provided with a polygonal outline for tool mounting.

[0009] As a further improvement of this utility model, the side cover is provided with a through hole communicating with the bearing chamber.

[0010] The beneficial effects of this utility model are as follows: by setting a rubber sleeve between the bearing and the bearing housing, the clamping force between the bearing and the bearing housing is effectively increased. Combined with the setting of the side cover and the inclined surface fit structure between the rubber sleeve and the side cover, the stability of bearing installation can be improved, the bearing can be prevented from falling out during use, and the service life of the tensioner pulley can be extended. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0012] Fig. 2 This is a schematic internal cross-sectional view of an embodiment of the present utility model.

[0013] Reference numerals: 1. Pulley; 2. Bearing housing; 3. Bearing; 4. Rubber sleeve; 5. Side cover; 6. First mounting part; 7. Second mounting part; 8. Limiting part; 9. Threaded groove; 10. Threaded shaft section; 11. First abutment surface; 12. Second abutment surface; 13. Through hole. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0015] Reference Figs. 1-2 As shown, a tensioning pulley 1 and bearing 3 anti-dislodgement structure includes a pulley 1, a bearing housing 2 disposed on the pulley 1, and a bearing 3. The bearing 3 is installed in the bearing housing 2, and a rubber sleeve 4 is provided between the bearing 3 and the bearing housing 2 to increase the clamping force between the bearing 3 and the bearing housing 2. The side of the bearing housing 2 used for installing the bearing 3 is provided with a fixedly connected side cover 5. The rubber sleeve 4 is provided with a first mounting part 6, and the side cover 5 facing the rubber sleeve 4 is provided with a second mounting part 7 that cooperates with the inclined surface of the first mounting part 6.

[0016] During installation, bearing 3 is assembled inside bearing chamber 2, and rubber sleeve 4 is fitted between the outer ring of bearing 3 and the inner wall of bearing chamber 2. Side cover 5 is fixedly connected to the side of bearing chamber 2 used for installing bearing 3. The second mounting part 7 of side cover 5 and the first mounting part 6 of rubber sleeve 4 cooperate with each other through inclined surfaces, thereby improving the fit between the inner ring of rubber sleeve 4 and the outer ring of bearing 3, and between the outer ring of rubber sleeve 4 and the inner wall of bearing chamber 2, thereby increasing the clamping force between bearing 3 and bearing chamber 2 and preventing bearing 3 from coming out of bearing chamber 2 during operation. Rubber sleeve 4 can be pre-fitted onto bearing 3 by interference fit and then installed into bearing chamber 2 together, or rubber sleeve 4 can be placed into bearing chamber 2 first and then bearing 3 can be installed.

[0017] The side cover 5, facing the bearing 3, is also provided with a limiting part 8 that restricts the axial movement of the bearing 3. The limiting part 8 abuts against the end of the outer ring of the bearing 3. When the bearing 3 is subjected to axial force, the limiting part 8 can form an axial constraint on the outer ring of the bearing 3, restricting the bearing 3 from moving axially away from the interior of the bearing housing 2. The side cover 5 cooperates with the first mounting part 6 through the second mounting part 7 to constrain the bearing 3 in the radial direction, and the limiting part 8 constrains the bearing 3 in the axial direction. Through axial and radial constraints, the bearing 3 can operate stably in the bearing housing 2.

[0018] The bearing chamber 2 has a threaded groove 9 on one side for mounting the bearing 3. The side cover 5 has a threaded shaft section 10 that mates with the threaded groove 9. The bearing chamber 2 has a first abutting surface 11 and a second abutting surface 12. The first abutting surface 11 abuts with the top of the second mounting part 7. The side cover 5 has a stepped surface that mates with the second abutting surface 12.

[0019] When the side cover 5 is connected to the threaded groove 9 of the bearing chamber 2 via the threaded shaft section 10, the contact between the first abutting surface 11 and the top of the second mounting part 7 can further restrict the axial position of the side cover 5, preventing the side cover 5 from being excessively screwed into the bearing chamber 2 and causing excessive pressure on the rubber sleeve 4, which would lead to its damage. The cooperation between the stepped surface and the second abutting surface 12 can increase the contact area between the side cover 5 and the bearing chamber 2, improve the stability of the connection between the two, reduce the loosening of the side cover 5 due to factors such as vibration during operation, and thus ensure the clamping effect of the rubber sleeve 4 and the restraining effect of the limiting part 8.

[0020] The side cover 5 has a polygonal outline for tool installation, which facilitates tool installation and removal. The side cover 5 also has a through hole 13 that communicates with the bearing chamber 2. The through hole 13 allows the bearing chamber 2 to be connected to the external environment, enabling the heat generated by the bearing 3 during operation to be dissipated to the outside through the through hole 13, thus preventing the bearing chamber 2 from becoming a closed space.

[0021] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A tensioning pulley bearing anti-disengagement structure, characterized in that, The device includes a pulley, a bearing housing mounted on the pulley, and a bearing. The bearing is installed in the bearing housing, and a rubber sleeve is provided between the bearing and the bearing housing to increase the clamping force between the bearing and the bearing housing. The bearing housing has a fixedly connected side cover on the side for mounting the bearing. The rubber sleeve has a first mounting part, and the side cover has a second mounting part on the side facing the rubber sleeve that cooperates with the inclined surface of the first mounting part.

2. The anti-disengagement structure for the tensioned pulley bearing according to claim 1, characterized in that, The side cover facing the bearing is also provided with a limiting part that restricts the axial movement of the bearing, and the limiting part abuts against the end of the outer ring of the bearing.

3. The anti-disengagement structure for the tensioned pulley bearing according to claim 2, characterized in that, The bearing housing has a threaded groove on one side for mounting the bearing, and the side cover has a threaded shaft section that mates with the threaded groove.

4. The anti-disengagement structure for the tensioned pulley bearing according to claim 3, characterized in that, The bearing housing is provided with a first abutting surface and a second abutting surface. The first abutting surface abuts against the top of the second mounting part, and the side cover is provided with a stepped surface that mates with the second abutting surface.

5. The anti-disengagement structure for the tensioned pulley bearing according to claim 1, characterized in that, The side cover has a polygonal outline for tool mounting.

6. The anti-disengagement structure for the tensioned pulley bearing according to claim 1, characterized in that, The side cover is provided with a through hole that communicates with the bearing chamber.

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