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

Abstract

The invention 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 present invention belongs to the technical field of new energy vehicle bearings, and specifically relates to a creep-resistant deep groove ball bearing with a special-shaped structure, which is used for a reducer and a motor input shaft of a new energy vehicle. Background Art

[0002] At present, the bearings used for reducers and motor input shafts of passenger cars and new energy vehicles are mainly deep groove ball bearings. Because the rotation speed of this part is very high, at least 16,000 rpm, when the bearing interference is insufficient, the bearing will creep.

[0003] The main solution to creep in the market is to add two "O" type rubber rings 1-58 to the outer ring of the bearing. Figure 1 , Figure 2 As shown. The deep groove ball bearing with an "O" type rubber ring 1-58 added to the outer ring is mainly composed of an outer ring 1-01, an inner ring 1-02, a steel ball 1-04, a retainer 1-07 and an "O" type rubber ring 1-58. Among them, the outer ring 1-01 has two square grooves 1-100 for installing the "O" type rubber ring 1-58. When installing this deep groove ball bearing with an "O" type rubber ring structure on the outer ring, the "O" type rubber ring 1-58 is easy to fall out of the square groove 1-100 of the outer ring. In addition, when the bearing is pressed, the "O" type rubber ring 1-58 in the square groove 1-100 is easy to be squeezed and deformed due to different shapes and volumes, which causes uncontrollable changes in the outer diameter size D1 of the "O" type rubber ring 1-58, affecting product performance. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a creep-resistant deep groove ball bearing with a special-shaped structure, in which the "O"-shaped rubber ring added to the outer ring is replaced with a special-shaped " " type rubber ring.

[0005] The technical solution of the present invention is: a special-shaped creep-resistant deep groove ball bearing, which is used for new energy vehicle reducers and motor input shafts. The deep groove ball bearing is composed of an outer ring, an inner ring, a steel ball and a retaining frame. An outer ring annular groove is provided on the outer diameter surface of the outer ring. It is characterized in that a special-shaped rubber ring with the same cross-sectional shape as the outer ring annular groove and a height higher than the height of the outer ring annular groove is pressed into the outer ring annular groove.

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

[0007] The cross section of the special-shaped rubber ring in the technical solution of the present invention comprises a square portion matched with the square groove and an arc-shaped top.

[0008] The special-shaped rubber ring in the technical solution of the present invention is " " type rubber ring.

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

[0010] The special-shaped rubber ring in the technical solution of the present invention is a rubber ring made of nitrile rubber, acrylic rubber or fluororubber.

[0011] The retainer in the technical solution of the present invention is a metal retainer, a nylon 46 retainer or a nylon 66 retainer.

[0012] The steel ball in the technical solution of the present invention is a steel ball or a ceramic ball.

[0013] The deep groove ball bearing described in the technical solution of the present invention is a sealed bearing with a rubber sealing ring or a metal dust cover.

[0014] In the technical solution of the present invention, 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 invention has the following positive effects: The creep-resistant deep groove ball bearing with special-shaped structure has a rubber ring structure of " "-shaped rubber ring, the bottom of the new structure rubber ring is square, installed in the square groove of the outer ring, and fits tightly with the square groove. When the bearing is installed, the special-shaped " "-shaped rubber ring is not easy to fall off. In addition, the special-shaped " The ""-shaped rubber ring is installed in the inner part of the square groove. It has the same shape and volume as the square groove. When the bearing is pressed, the " "" type rubber ring has less deformation and is suitable for special-shaped " The outer diameter D2 of the "" type rubber ring has little effect, the outer diameter D2 is controllable, and the anti-creep performance of the bearing is excellent.

[0016] The invention has the advantages of reliable assembly, small deformation, small change in the outer diameter of the rubber ring after press-fitting and excellent anti-creep performance of the bearing, and is mainly used for new energy vehicle reducers and motor input shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the common structure of this type of bearing.

[0018] Figure 2 It is a schematic diagram of the outer ring square groove structure.

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure numbers: 1-01-outer ring; 1-02-inner ring; 1-04-steel ball; 1-07-cage; 1-58-"O" type rubber ring; 2-01-outer ring; 2-02-inner ring; 2-04-steel ball; 2-58-" " type rubber ring. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 2 An embodiment of a special-shaped creep-resistant deep groove ball bearing of the present invention is used for a reducer and an input shaft of a motor of a new energy vehicle, comprising an outer ring 2-01, an inner ring 2-02, a steel ball 2-04, a retainer 2-07 and a " " type rubber ring 2-58. Among them, the outer ring 2-01, the inner ring 2-02, the steel ball 2-04, and the holder 2-07 are the same as those in the prior art, except that " "-shaped rubber ring 2-58, changed from the usual "O" shape to a special-shaped " "Type, installed in the square groove of the outer ring 2-01." The outer diameter of the "" type rubber ring is between 30 and 160 mm.

[0023] Two outer ring annular grooves are symmetrically arranged on the outer diameter surface of the outer ring 2-01, and both outer ring annular grooves are square grooves.

[0024] “ The cross section of the "type rubber ring 2-58" includes a square portion and an arc-shaped top portion that matches the square groove. The square portion matches the shape of the square groove, and the height of the square portion is the same as the depth of the square groove. The material of the "" type rubber ring 2-58 is nitrile rubber, acrylic rubber or fluoro rubber. "The rubber ring 2-58 is pressed into the two square grooves." The outer diameter of the "" type rubber ring 2-58 is 30 to 160 mm.

[0025] Cage 2-07 is a metal cage, and nylon 46 cage or nylon 66 cage can also be used.

[0026] The steel ball 2-04 is a steel ball, but a ceramic ball can also be used.

[0027] Deep groove ball bearings are sealed bearings with rubber sealing rings or sealed bearings with metal dust covers.

[0028] The inner diameter of deep groove ball bearings is between 15 and 100 mm.

[0029] Through structural changes, the " The bottom of the "" rubber ring is square and fits tightly with the square groove 1-100. When the bearing is installed, the special-shaped " "-shaped rubber ring 2-58 is not easy to fall off. ""-shaped rubber ring 2-58 is installed in the inner part of the square groove 1-100, which has the same shape and volume as the square groove. When the bearing is pressed, the special-shaped " The "" type rubber ring 2-58 has a small deformation, the outer diameter D2 is controllable, and the anti-creep performance of the bearing is more superior.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A creep-resistant deep groove ball bearing with a special-shaped structure, used for a reducer of a new energy vehicle and an input shaft of a motor, the deep groove ball bearing comprising an outer ring (2-01), an inner ring (2-02), a steel ball (2-04) and a retaining frame (2-07), an outer ring annular groove is provided on the outer diameter surface of the outer ring (2-01), and the characteristics are: A special-shaped rubber ring having the same cross-sectional shape as the outer ring groove and a height higher than that of the outer ring groove is press-fitted in the outer ring groove.

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

3. The creep-resistant deep groove ball bearing with a special-shaped structure according to claim 2 is characterized by: The cross section of the special-shaped rubber ring comprises a square portion matched with the square groove and an arc-shaped top portion.

4. The creep-resistant deep groove ball bearing with a special-shaped structure according to claim 3 is characterized by: The special-shaped rubber ring is "-type rubber ring (2-58).

5. A creep-resistant deep groove ball bearing with a special-shaped structure according to any one of claims 1 to 4, characterized in that: Two outer ring annular grooves are symmetrically arranged on the outer diameter surface of the outer ring (2-01); and special-shaped rubber rings are press-fitted in the two outer ring annular grooves.

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

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

8. A creep-resistant deep groove ball bearing with a special-shaped structure according to any one of claims 1 to 4, characterized in that: The steel ball (2-04) is a steel ball or a ceramic ball.

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

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