Waterproof bearing

Abstract

The utility model belongs to bearing technical field, specifically discloses a waterproof bearing, including the outer ring and the inner ring of setting in the inner ring inside of outer ring, and the placing cavity is formed between outer ring and inner ring, is provided with sealing assembly in placing cavity, sealing assembly includes at least one sealing ring, sealing ring has the sealing ring outer lip of the direction outer ring and the multiple sealing ring inner lip of the direction inner ring, sealing ring outer lip and outer ring sealing cooperation, multiple sealing ring inner lip and inner ring sealing cooperation, the utility model discloses the setting of sealing assembly has formed the sealed barrier, has effectively blocked the outside moisture, dust and so on Pollutant invasion placing cavity inside, has reduced the probability of rolling element, raceway and pollutant contact, has reduced the corrosion, wear and tear and so on Breakdown risk, simultaneously, this sealed structure has also avoided the leakage and pollution of bearing interior lubricating grease, has guaranteed the lubrication state between rolling element and raceway, has maintained the low resistance rolling cooperation, and further prolongs the overall service life of bearing.

Description

Technical Field

[0001] This application relates to the field of bearing technology, and more specifically, to a waterproof bearing. Background Technology

[0002] Deep groove ball bearings are one of the most common types of rolling bearings. They use spherical steel balls as rolling elements and achieve support and transmission through deep groove raceways on the inner and outer rings. They have a simple structure, low frictional resistance, and can withstand radial and a small amount of bidirectional axial loads at the same time. They are widely used in motors, home appliances, machinery and other equipment.

[0003] In humid or water-related operating conditions, traditional deep groove ball bearings often employ a single-ring, single-seal structure. The design of the sealing rings on both sides of the waterproof cover is simple, and the sealing surface fit and interception effect are limited. External moisture can easily break through the sealing gap and enter the bearing, directly contacting the steel balls and raceways, which can lead to problems such as corrosion and grease failure, ultimately shortening the service life of the bearing. Utility Model Content

[0004] To address the aforementioned problems, this application provides a waterproof bearing.

[0005] The waterproof bearing provided in this application adopts the following technical solution:

[0006] A waterproof bearing includes an outer ring and an inner ring disposed inside the outer ring, a cavity is formed between the outer ring and the inner ring, and a sealing component is disposed in the cavity;

[0007] The sealing assembly includes at least one sealing ring having an outer sealing lip facing an outer ring and a plurality of inner sealing lips facing an inner ring, the outer sealing lip sealingly engaging with the outer ring and the plurality of inner sealing lips sealingly engaging with the inner ring.

[0008] Through the above technical solutions, the sealing components form a sealing barrier, effectively preventing external moisture, dust and other contaminants from entering the placement cavity, reducing the probability of contact between the rolling elements, raceways and contaminants, and reducing the risk of failures such as rust and wear; at the same time, this sealing structure also avoids leakage and contamination of the lubricating grease inside the bearing, ensuring the lubrication state between the rolling elements and raceways, maintaining low-resistance rolling fit, and thus extending the overall service life of the bearing.

[0009] Furthermore, the outer ring and inner ring are provided with sealing grooves corresponding to the outer lip and inner lip of the sealing ring, and the outer lip and inner lip of the sealing ring are at least partially accommodated in the sealing grooves.

[0010] Furthermore, a support frame is embedded within the sealing ring.

[0011] Furthermore, the outer lip of the sealing ring is made of an elastic sealing material.

[0012] Furthermore, rolling elements are provided between the outer ring and the inner ring, and the rolling elements are evenly spaced by the cage.

[0013] Furthermore, the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring are respectively provided with raceways to restrict the position of the rolling elements.

[0014] Furthermore, multiple rolling elements roll in conjunction with the raceway.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This invention forms a sealing barrier through the setting of the sealing component, effectively preventing external moisture, dust and other contaminants from entering the placement cavity, reducing the probability of contact between the rolling elements and raceways and contaminants, and reducing the risk of failures such as rust and wear; at the same time, this sealing structure also avoids leakage and contamination of the lubricating grease inside the bearing, ensuring the lubrication state between the rolling elements and raceways, maintaining low-resistance rolling fit, and thus extending the overall service life of the bearing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a plan view of the present invention;

[0021] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0022] Explanation of reference numerals in the attached drawings: 1. Outer ring; 2. Inner ring; 3. Sealing ring; 4. Placement cavity; 5. Rolling element; 6. Raceway; 7. Cage; 8. Sealing groove; 9. Outer lip of sealing ring; 10. Inner lip of sealing ring; 11. Support frame. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Reference Figures 1-5A waterproof bearing includes an outer ring 1 and an inner ring 2 disposed inside the outer ring 1. A placement cavity 4 is formed between the outer ring 1 and the inner ring 2, and a sealing assembly is disposed in the placement cavity 4.

[0025] The sealing assembly includes at least one sealing ring 3, the sealing ring 3 having an outer sealing ring lip 9 facing the outer ring 1 and a plurality of inner sealing ring lips 10 facing the inner ring 2, the outer sealing ring lip 9 sealingly engaging with the outer ring 1, and the plurality of inner sealing ring lips 10 sealingly engaging with the inner ring 2.

[0026] In terms of sealing and protection, in the placement cavity 4 between the outer ring 1 and the inner ring 2, the sealing ring 3 of the sealing component maintains its structural shape by relying on the embedded support skeleton 11 to avoid deformation leading to sealing failure; the outer lip 9 of the sealing ring facing the outer ring 1 is made of elastic sealing material and is partially embedded in the corresponding sealing groove 8 of the outer ring 1, achieving a tight fit with the sealing groove 8 through the elasticity of the material. At the same time, the multiple inner lips 10 of the sealing ring 3 facing the inner ring 2 are also partially accommodated in the sealing groove 8 of the inner ring 2. The cooperation of multiple sets of inner lips 10 and sealing grooves 8 forms multiple sealing barriers, which can prevent external moisture, dust and other pollutants from entering the interior of the placement cavity 4.

[0027] The inner lip 10 of the multi-layer sealing ring prevents the rolling elements 5 and raceway 6 from contacting external contaminants such as water, reducing the risk of rust and wear, while preventing grease leakage and contamination. This makes the rolling fit between the rolling elements 5 and raceway 6 more stable, and the overall service life of the bearing is significantly extended compared to existing single-seal bearings.

[0028] Reference Figures 4-5 The outer ring 1 and the inner ring 2 are provided with sealing grooves 8 corresponding to the outer lip 9 and the inner lip 10 of the sealing ring. The outer lip 9 and the inner lip 10 of the sealing ring are at least partially accommodated in the sealing grooves 8. The sealing ring 3 is embedded with a support skeleton 11. The outer lip 9 of the sealing ring is made of elastic sealing material.

[0029] Reference Figures 1-3 A rolling element 5 is provided between the outer ring 1 and the inner ring 2. The rolling elements 5 are evenly spaced by the cage 7. The inner circumferential surface of the outer ring 1 and the outer circumferential surface of the inner ring 2 are respectively provided with raceways 6 to restrict the position of the rolling elements 5. Multiple rolling elements 5 roll in cooperation with the raceways 6.

[0030] The rolling elements 5 between the outer ring 1 and the inner ring 2 are evenly distributed through the cage 7, ensuring that each rolling element 5 is embedded in the raceway 6 on the inner circumferential surface of the outer ring 1 and the outer circumferential surface of the inner ring 2;

[0031] When the inner ring 2 rotates with the connecting shaft, the rolling element 5 rolls along the raceway 6, realizing power transmission and radial and axial load support.

[0032] Working principle: The outer ring 1 and inner ring 2 are combined to form a placement cavity 4, in which the sealing assembly and rolling element 5 are accommodated. The sealing ring 3 of the sealing assembly is embedded in the support frame 11, and the outer lip 9 of the sealing ring facing the outer ring 1 is embedded in the corresponding sealing groove 8 of the outer ring 1, and is tightly fitted to the groove wall by the elasticity of the material; at the same time, the multiple inner lips 10 of the sealing ring 3 facing the inner ring 2 are partially accommodated in the sealing groove 8 of the inner ring 2. The multiple sets of inner lips and sealing groove 8 cooperate to form a sealing barrier, completing the pre-positioning of the sealing structure.

[0033] When the bearing is running, the inner ring 2 rotates synchronously with the connecting shaft. At this time, the outer ring 1 remains fixed or moves with the corresponding component. The cage 7 distributes the rolling elements 5 evenly at intervals, so that each rolling element 5 is embedded in the raceway 6 on the inner circumferential surface of the outer ring 1 and the outer circumferential surface of the inner ring 2.

[0034] When the inner ring 2 rotates with the connecting shaft, the rolling element 5 rolls along the raceway 6, realizing power transmission and radial and axial load support.

[0035] During operation, the support frame 11 maintains the structural shape of the sealing ring 3, preventing it from deforming due to vibration or friction. The mating surfaces of the outer lip 9 of the sealing ring and the sealing groove 8 of the outer ring 1 prevent external contaminants from entering from the outer ring 1 side. The cooperation of multiple sets of inner lips 10 of the sealing ring and the sealing groove 8 of the inner ring 2 intercepts moisture and dust approaching from the inner ring 2 side, preventing contaminants from entering the placement cavity 4. This sealing process also prevents the rolling elements 5 and raceways 6 from contacting contaminants, preventing grease leakage or contamination, and ensuring a stable rolling fit between the rolling elements 5 and raceways 6.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof bearing, characterized in that, include: An outer ring (1) and an inner ring (2) disposed inside the outer ring (1), a placement cavity (4) is formed between the outer ring (1) and the inner ring (2), and a sealing component is disposed in the placement cavity (4); The sealing assembly includes at least one sealing ring (3), the sealing ring (3) having an outer sealing lip (9) facing the outer ring (1) and a plurality of inner sealing lips (10) facing the inner ring (2), the outer sealing lip (9) sealingly engaging with the outer ring (1) and the plurality of inner sealing lips (10) sealingly engaging with the inner ring (2).

2. The waterproof bearing according to claim 1, characterized in that: The outer ring (1) and inner ring (2) are provided with sealing grooves (8) corresponding to the outer lip (9) and inner lip (10) of the sealing ring, and the outer lip (9) and inner lip (10) of the sealing ring are at least partially accommodated in the sealing grooves (8).

3. A waterproof bearing according to claim 1, characterized in that: The sealing ring (3) has a support frame (11) embedded inside.

4. A waterproof bearing according to claim 1, characterized in that: The outer lip (9) of the sealing ring is made of elastic sealing material.

5. A waterproof bearing according to claim 1, characterized in that: A rolling element (5) is provided between the outer ring (1) and the inner ring (2), and the rolling element (5) is evenly spaced by a cage (7).

6. A waterproof bearing according to claim 5, characterized in that: The inner circumferential surface of the outer ring (1) and the outer circumferential surface of the inner ring (2) are respectively provided with raceways (6) to restrict the position of the rolling element (5).

7. A waterproof bearing according to claim 6, characterized in that: The multiple rolling elements (5) are in rolling engagement with the raceway (6).

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