Creep-resistant deep groove ball bearing with special-shaped structure

Abstract

The utility model discloses a creep-resistant deep groove ball bearing with a special-shaped structure. Belongs to the technical field of new energy automobile bearings. The deep groove ball bearing mainly solves the problems that when an existing deep groove ball bearing with an O-shaped ring structure on an outer ring is installed, the O-shaped ring is prone to falling off, and after press fitting, due to the fact that the O-shaped ring is prone to deformation, the size of the outer diameter D1 is uncontrollably changed, and the product performance is affected. The deep groove ball bearing is mainly characterized in that the deep groove ball bearing consists of an outer ring, an inner ring, a steel ball and a retainer, wherein an outer ring annular groove is formed in the outer diameter surface of the outer ring; and a special-shaped rubber ring which has the same section shape as the outer ring annular groove and is higher than the outer ring annular groove is pressed in the outer ring annular groove. The bearing has the advantages of being firm in assembly, small in deformation, small in variation of the outer diameter size of the rubber ring after press fitting, excellent in creep resistance and the like, and is mainly used for new energy automobile speed reducers and motor input shafts.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle bearings, and particularly relates to a creep-resistant deep groove ball bearing with a special-shaped structure, which is used for a speed reducer and a motor input shaft of a new energy vehicle. Background Art

[0002] At present, the bearings used for the speed reducer and the motor input shaft of a passenger car new energy vehicle are mainly deep groove ball bearings. Since the rotation speed of this part is very high, at least 16,000 rpm, when the interference fit of the bearing is insufficient, the bearing will creep.

[0003] The main measure to solve creep in the market is to add two "O" - shaped rubber rings 1 - 58 to the outer ring of the bearing. As Figure 1 、 Figure 2 shown. The deep groove ball bearing with an "O" - shaped rubber ring added to the outer ring mainly consists of an outer ring 1 - 01, an inner ring 1 - 02, steel balls 1 - 04, a cage 1 - 07 and an "O" - shaped rubber ring 1 - 58, etc. Among them, the outer ring 1 - 01 is provided with two square grooves 1 - 100 for installing the "O" - shaped rubber ring 1 - 58. When installing this kind of deep groove ball bearing with an "O" - shaped rubber ring structure on the outer ring, the "O" - shaped rubber ring 1 - 58 is easy to escape from the square groove 1 - 100 of the outer ring. In addition, when the bearing is press - fitted, the "O" - shaped rubber ring 1 - 58 in the square groove 1 - 100 is prone to extrusion deformation due to different shapes and volumes, resulting in uncontrollable changes in the outer diameter dimension D1 of the "O" - shaped rubber ring 1 - 58, affecting the product performance. Summary of the Utility Model

[0004] The purpose of the utility model is to address the above - mentioned deficiencies and provide a creep - resistant deep groove ball bearing with a special - shaped structure, by changing the "O" - shaped rubber ring added to the outer ring into a special - shaped " " - shaped rubber ring.

[0005] The technical solution of the utility model is: a creep - resistant deep groove ball bearing with a special - shaped structure, which is used for a speed reducer and a motor input shaft of a new energy vehicle. The deep groove ball bearing is composed of an outer ring, an inner ring, steel balls and a cage. An outer ring annular groove is provided on the outer diameter surface of the outer ring, and its feature is that: an special - shaped rubber ring with the same cross - section shape as the outer ring annular groove and a height higher than the height of the outer ring annular groove is press - fitted in the outer ring annular groove.

[0006] In the technical solution of the utility model, the outer ring annular groove is a square groove.

[0007] In the technical solution of the utility model, the cross - section of the special - shaped rubber ring includes a square part matching the square groove and an arc - shaped top.

[0008] In the technical solution of the utility model, the special - shaped rubber ring is " ” O-ring.

[0009] In the technical solution of the present utility model, two outer ring annular grooves are symmetrically arranged on the outer diameter surface of the outer ring; special-shaped rubber rings are press-fitted in both of the two outer ring annular grooves.

[0010] In the technical solution of the present utility model, the special-shaped rubber ring is a rubber ring made of nitrile rubber, acrylate rubber or fluororubber.

[0011] In the technical solution of the present utility model, the cage is a metal cage, a nylon 46 cage or a nylon 66 cage.

[0012] In the technical solution of the present utility model, the steel balls are steel balls or ceramic balls.

[0013] In the technical solution of the present utility model, the deep groove ball bearing is a sealed bearing with a rubber sealing ring or a metal dust cover.

[0014] In the technical solution of the present utility model, the inner diameter of the deep groove ball bearing is 15 - 100 mm; the outer diameter of the special-shaped rubber ring is 30 - 160 mm.

[0015] The present utility model has the following positive effects:

[0016] The anti-creep deep groove ball bearing with a special-shaped structure, the rubber ring structure is a special-shaped " " O-ring. The bottom of this new structure rubber ring is square and is installed in the square groove of the outer ring, fitting closely with the square groove. When the bearing is installed, the special-shaped " " O-ring is not easy to fall off. In addition, the part of the special-shaped " " O-ring installed in the square groove has the same shape and similar volume as the square groove. When the bearing is press-fitted, the special-shaped " " O-ring deforms less, has little influence on the outer diameter dimension D2 of the special-shaped " " O-ring, the outer diameter dimension D2 is controllable, and the bearing has excellent anti-creep performance.

[0017] The present utility model has the advantages of reliable assembly, small deformation, small change in the outer diameter dimension of the rubber ring after press-fitting, and excellent anti-creep performance of the bearing. It is mainly used for the speed reducers of new energy vehicles and the input shafts of motors. Brief Description of the Drawings

[0018] Figure 1 is the general structural schematic diagram of this type of bearing.

[0019] Figure 2 is the structural schematic diagram of the outer ring square groove.

[0020] Figure 3 is the overall structural schematic diagram of the present utility model.

[0021] Reference numerals in the drawings: 1-01 - outer ring; 1-02 - inner ring; 1-04 - steel ball; 1-07 - cage; 1-58 - "O"-shaped rubber ring; 2-01 - outer ring; 2-02 - inner ring; 2-04 - steel ball; 2-58 - " " - shaped rubber ring. Specific implementation mode

[0022] The present utility model will be further described below in conjunction with the accompanying drawings.

[0023] As Figure 2 shown. An embodiment of a special-shaped structure creep-resistant deep groove ball bearing of the present utility model, which is used for a new energy vehicle speed reducer and a motor input shaft, includes an outer ring 2-01, an inner ring 2-02, steel balls 2-04, a cage 2-07 and a " " - shaped rubber ring 2-58. Among them, the outer ring 2-01, the inner ring 2-02, the steel balls 2-04, and the cage 2-07 are the same as those in the prior art. The difference is that the " " - shaped rubber ring 2-58 is changed from the "O" - shaped of the normal structure to the special-shaped " " - shaped, and is installed in the square groove of the outer ring 2-01. The outer diameter of the " " - shaped rubber ring is 30 - 160 mm.

[0024] On the outer diameter surface of the outer ring 2-01, two outer ring annular grooves are symmetrically arranged, and both of the two outer ring annular grooves are square grooves.

[0025] " " - shaped rubber ring 2-58 has a cross-section including a square part and an arc top that cooperate with the square groove. The square part is matched with the shape of the square groove, and the height of the square part is the same as the depth of the square groove. The " " - shaped rubber ring 2-58 is made of nitrile rubber, acrylate rubber or fluororubber. Two " " - shaped rubber rings 2-58 are press-fitted into the two square grooves. The outer diameter of the " " - shaped rubber ring 2-58 is 30 - 160 mm.

[0026] The cage 2-07 is a metal cage, and a nylon 46 cage or a nylon 66 cage can also be used.

[0027] The steel balls 2-04 are steel balls, and ceramic balls can also be used.

[0028] The deep groove ball bearing is a sealed bearing with a rubber sealing ring, or can also be a sealed bearing with a metal dust cover.

[0029] The inner diameter of the deep groove ball bearing is 15 - 100 mm.

[0030] Through the change of the structure, the special-shaped " The bottom of the "["]"]"-shaped rubber ring is square and fits tightly with the square groove 1-100. When installing the bearing, the special-shaped "["]"]" "-shaped rubber ring 2-58 is not likely to fall off. The special-shaped "["]"]" "-shaped rubber ring 2-58 that is installed inside the square groove 1-100 has the same shape and a volume close to that of the square groove. When the bearing is press-fitted, the special-shaped "["]"]" "-shaped rubber ring 2-58 has a smaller deformation, the outer diameter dimension D2 is controllable, and the anti-creep performance of the bearing is more excellent.

[0031] 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, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A special-shaped structure creep-resistant deep groove ball bearing is used for the speed reducer and motor input shaft of new energy vehicles. The deep groove ball bearing is composed of an outer ring (2-01), an inner ring (2-02), steel balls (2-04) and a cage (2-07). An annular groove is provided on the outer diameter surface of the outer ring (2-01). It is characterized in that: An irregular rubber ring with the same cross-sectional shape as the outer ring annular groove and a height higher than that of the outer ring annular groove is press-fitted in the outer ring annular groove.

2. The special-shaped structure creep-resistant deep groove ball bearing according to claim 1, characterized in that: The outer ring annular groove is a square groove.

3. A special-shaped structure creep-resistant deep groove ball bearing according to claim 2, characterized in that: The cross-section of the irregular rubber ring includes a square part and an arc top that cooperate with the square groove.

4. The special-shaped structure creep-resistant deep groove ball bearing according to claim 3, characterized in that: The special-shaped rubber ring is " "-shaped rubber ring (2-58).

5. An anisotropic structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: Two outer ring annular grooves are symmetrically provided on the outer diameter surface of the outer ring (2-01); irregular rubber rings are press-fitted in both of the two outer ring annular grooves.

6. A special-shaped structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: The irregular rubber ring is a rubber ring made of nitrile rubber, acrylate rubber or fluororubber.

7. An irregular-shaped structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: The cage (2-07) is a metal cage, nylon 46 cage or nylon 66 cage.

8. An anisotropic structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: The steel balls (2-04) are steel balls or ceramic balls.

9. An anisotropic structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: The deep groove ball bearing is a sealed bearing with a rubber sealing ring or a metal dust cover.

10. A special-shaped structure creep-resistant deep groove ball bearing according to any one of claims 1-4, characterized in that: The inner diameter of the deep groove ball bearing is 15 to 100 mm; the outer diameter of the irregular rubber ring is 30 to 160 mm.

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