Single-sided high-seal deep groove ball bearing

Abstract

The utility model discloses a unilateral high seal use deep groove ball bearing, include: deep groove ball bearing body, deep groove ball bearing body includes bearing outer ring and bearing inner race, be provided with steel ball through retainer between bearing outer ring and bearing inner race, be provided with sealing structure and baffle at the upper end clearance of bearing outer ring, retainer, bearing inner race, bearing outer ring inboard is provided with first sealing groove, bearing inner race inboard is provided with second sealing groove, sealing structure includes the inboard seal ring of setting inboard and the outboard seal ring of setting outside, first sealing lip of inboard seal ring and bearing outer ring inboard lateral wall contact, second sealing lip of inboard seal ring and outboard seal ring contact, third sealing lip of inboard seal ring plunges into second sealing groove, fourth sealing lip of outboard seal ring plunges into first sealing groove, fifth sealing lip of outboard seal ring and bearing outer ring inboard lateral wall contact, the back width of retainer is greater than the groove width of retainer.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing single-sided high-seal bearings, specifically to a single-sided high-seal deep groove ball bearing. Background Technology

[0002] Single-sided high-seal bearings primarily function as seals, preventing liquids, mud, and other external contaminants from entering the bearing. This ensures a tight seal and protects the bearing from premature failure. Its sealing performance and reliability are crucial characteristics affecting vehicle performance. This structure is mainly used in vehicle wheel hub units. As the component that drives the vehicle's forward rotation and provides support, its performance directly impacts the lifespan of the wheel hub bearing.

[0003] In practical designs, due to space constraints, conventional double-sided sealing not only results in high frictional torque and low efficiency, but also leaves one side of the bearing exposed without any protection, while the other side, installed in the system, requires no sealing. Given that the bearing's dimensions and load-bearing capacity remain unchanged, and a high-performance single-sided seal is required, conventional bearing designs cannot meet this requirement. Therefore, a redesign of the bearing is necessary to achieve this high-performance single-sided sealing. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a single-sided high-sealing deep groove ball bearing.

[0005] To achieve the purpose of this utility model, the technical solution adopted is as follows: A single-sided high-sealing deep groove ball bearing, characterized in that it comprises: A deep groove ball bearing body, the deep groove ball bearing body comprising an outer ring and an inner ring; A steel ball is provided between the outer ring and the inner ring of the bearing via a cage; A sealing structure and a baffle are provided in the upper gap of the bearing outer ring, cage, and inner ring; A first sealing groove is provided on the inner side of the outer ring of the bearing; A second sealing groove is provided on the inner side of the bearing inner ring; The sealing structure includes an inner sealing ring disposed on the inner side and an outer sealing ring disposed on the outer side. The first sealing lip of the inner sealing ring contacts the inner sidewall of the outer ring of the bearing. The second sealing lip of the inner sealing ring contacts the outer sealing ring; The third sealing lip of the inner sealing ring extends into the second sealing groove; The fourth sealing lip of the outer sealing ring extends into the first sealing groove; The fifth sealing lip of the outer sealing ring contacts the inner sidewall of the bearing inner ring; The back width of the cage is greater than the slot width of the cage.

[0006] In a preferred embodiment of this utility model, a baffle mounting groove is provided on the outer side of the inner ring of the bearing; the baffle is an L-shaped baffle, one end of which is located at the baffle mounting groove and is installed on the outer side of the inner ring of the bearing by interference fit.

[0007] In a preferred embodiment of this utility model, the baffle is made of stainless steel.

[0008] In a preferred embodiment of this utility model, the distance from the center of the steel ball to the outer side of the outer ring of the bearing is not equal to the distance from the center of the steel ball to the outer side of the inner ring of the bearing.

[0009] The distance from the center of the steel ball to the outer side of the outer ring of the bearing is less than the distance from the center of the steel ball to the outer side of the inner ring of the bearing.

[0010] In a preferred embodiment of this utility model, the steel ball, the outer ring of the bearing, and the inner ring of the bearing are all made of bearing steel.

[0011] In a preferred embodiment of this invention, the back of the cage provides a seal to protect the other side of the gap between the outer ring and the inner ring of the bearing.

[0012] The beneficial effects of this utility model are as follows: This invention relates to a single-sided high-seal deep groove ball bearing that reduces bearing friction torque, improves bearing efficiency, and saves bearing costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 . Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, in the following descriptions, well-known structures and technologies have been omitted to avoid unnecessary confusion regarding the concept of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] like Figure 1 Or, as shown in Figure 2, a single-sided high-seal deep groove ball bearing is characterized by comprising a deep groove ball bearing body, which includes an outer ring 1 and an inner ring 2.

[0018] A steel ball 4 is provided between the outer ring 1 and the inner ring 2 of the bearing via a cage 3.

[0019] A sealing structure and a baffle 7 are provided in the upper gap between the outer ring 1, the cage 3, and the inner ring 2 of the bearing. The sealing structure includes an inner sealing ring 5 located on the inner side and an outer sealing ring 6 located on the outer side.

[0020] A first sealing groove 11 is provided on the inner side of the outer ring 1 of the bearing, and a second sealing groove 21 is provided on the inner side of the inner ring 2 of the bearing.

[0021] The first sealing lip 51 of the inner sealing ring 5 contacts the inner sidewall of the outer ring 1 of the bearing, and the second sealing lip 52 of the inner sealing ring 5 contacts the outer sealing ring 6.

[0022] The third sealing lip 53 of the inner sealing ring 5 extends into the second sealing groove 21. The fourth sealing lip 61 of the outer sealing ring 6 extends into the first sealing groove 11, and the fifth sealing lip 62 of the outer sealing ring 6 contacts the inner sidewall of the bearing inner ring 2.

[0023] The back 31 of the cage 3 is wider than the groove width 32 of the cage. The back 31 of the cage 3 seals and protects the clearance on the other side between the outer ring 1 and the inner ring 2 of the bearing.

[0024] The width of the back of the cage is increased, while the rest of the position remains unchanged. Conventional cages only serve to separate the steel balls. In this invention, the cage not only separates the steel balls, but also acts as a seal on one side to prevent grease from leaking from the other side and thus failing to provide lifelong lubrication.

[0025] This invention reduces the number of sealing rings on one side, which lowers the bearing's frictional torque and improves its efficiency. Simultaneously, it also reduces the bearing's cost.

[0026] A baffle mounting groove 22 is provided on the outer side of the inner ring 2 of the bearing; the baffle 7 is an L-shaped baffle, one end of which is located at the baffle mounting groove 22 and is installed on the outer side of the inner ring 2 of the bearing by interference fit.

[0027] The baffle 7 is in direct contact with dirt on the outside and needs to be corrosion resistant. Stainless steel baffles are usually chosen.

[0028] For the installation of the baffle 7, the existing technology uses welding, which is more expensive.

[0029] This invention uses an interference fit to press the bearing inner ring, which makes installation convenient and reduces costs.

[0030] The distance from the center of steel ball 4 to the outer side of the outer ring 1 of the bearing is not equal to the distance from the center of steel ball 4 to the outer side of the inner ring 2 of the bearing.

[0031] The distance from the center of steel ball 4 to the outer side of the outer ring 1 of the bearing is less than the distance from the center of steel ball 4 to the outer side of the inner ring 2 of the bearing.

[0032] It adopts an asymmetrical structural form, and according to the ISO calculation method, the rated dynamic load and rated static load remain unchanged; according to the life calculation theory, the life can meet the service requirements under the same working conditions.

[0033] Steel ball 4, bearing outer ring 1, and bearing inner ring 2 are all made of bearing steel.

[0034] The above shows and describes the basic principles, main features, and advantages of this utility model.

[0035] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of this utility model as defined by the appended claims and their equivalents.

Claims

1. A single-sided high-sealing deep groove ball bearing, characterized in that, include: A deep groove ball bearing body, the deep groove ball bearing body comprising an outer ring and an inner ring; A steel ball is provided between the outer ring and the inner ring of the bearing via a cage; A sealing structure and a baffle are provided in the upper gap of the bearing outer ring, cage, and inner ring; A first sealing groove is provided on the inner side of the outer ring of the bearing; A second sealing groove is provided on the inner side of the bearing inner ring; The sealing structure includes an inner sealing ring disposed on the inner side and an outer sealing ring disposed on the outer side. The first sealing lip of the inner sealing ring contacts the inner sidewall of the outer ring of the bearing. The second sealing lip of the inner sealing ring contacts the outer sealing ring; The third sealing lip of the inner sealing ring extends into the second sealing groove; The fourth sealing lip of the outer sealing ring extends into the first sealing groove; The fifth sealing lip of the outer sealing ring contacts the inner sidewall of the bearing inner ring; The back width of the cage is greater than the slot width of the cage.

2. The single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, A baffle mounting groove is provided on the outer side of the inner ring of the bearing; the baffle is an L-shaped baffle, one end of which is located at the baffle mounting groove and is installed on the outer side of the inner ring of the bearing by interference fit.

3. A single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, The baffle is made of stainless steel.

4. A single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, The distance from the center of the steel ball to the outer side of the outer ring of the bearing is not equal to the distance from the center of the steel ball to the outer side of the inner ring of the bearing.

5. A single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, The distance from the center of the steel ball to the outer side of the outer ring of the bearing is less than the distance from the center of the steel ball to the outer side of the inner ring of the bearing.

6. A single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, The steel balls, outer ring, and inner ring of the bearing are all made of bearing steel.

7. A single-sided high-sealing deep groove ball bearing as described in claim 1, characterized in that, The back of the cage provides a seal to protect the clearance on the other side between the outer ring and the inner ring of the bearing.

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