Sealed bearing
By designing a dust-proof cover structure in sealed bearings, using lips and baffles to enhance dust-proof performance, and setting heat dissipation holes on the surface of the dust-proof cover, the problem of insufficient dust-proof performance of sealed bearings is solved, extending service life and reducing heating phenomenon.
Patent Information
- Application Number
- CN202421537195.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Existing sealed bearings are susceptible to dust and oil pollution during use, resulting in insufficient dustproof performance and shortening service life.
A sealed bearing is designed, adopting a dust-proof cover structure, with a lip and a baffle on the dust-proof cover. The lip fills the gap between the outer bearing ring and the sealing cover. The baffle and the outer bearing ring are abutted, and a heat dissipation hole is provided on the surface of the dust-proof cover to improve heat dissipation performance.
By enhancing the dustproof performance of sealed bearings, effectively blocking dust and oil stains, extending the service life of sealed bearings, and at the same time, the design of heat dissipation holes reduces the heating phenomenon during operation.
Smart Images
Figure CN222633668U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a sealed bearing. Background Art
[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. When other parts move relative to each other on the shaft, bearings can be used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. Therefore, bearings are an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient of the equipment during transmission. In order to prevent the bearing balls from being directly exposed to the outside, existing rolling bearings usually include an inner ring, an outer ring, and a rolling body held by a cage between the inner ring and the outer ring, and a dust cover symmetrical to the rolling body is installed between the inner ring and the outer ring to prevent the balls from being corroded by impurities such as dust and oil.
[0003] Therefore, it is necessary to provide a sealed bearing with better dustproof performance, thereby extending the service life of the sealed bearing. Utility Model Content
[0004] The utility model provides a sealed bearing device, which overcomes the shortcomings described in the background technology.
[0005] The technical solution adopted by the utility model to solve its technical problem is:
[0006] A sealed bearing device, comprising an outer bearing ring, an inner bearing ring, a sealing cover, and a ball. The inner surface of the outer bearing ring is provided with an outer raceway, the outer surface of the inner bearing ring is provided with an inner raceway, the outer bearing ring is sleeved outside the inner bearing ring, the outer raceway and the inner raceway are combined to form a ball raceway, the ball is arranged in the ball raceway, and the sealing cover is arranged outside the ball raceway;
[0007] The sealed bearing also includes a dust cover, a baffle is provided on the dust cover, a lip is provided on the lower surface of the dust cover, the dust cover is arranged on the outside of the sealing cover, the baffle is against the outer bearing ring, and the lip is inserted into the gap between the outer bearing ring and the sealing cover.
[0008] Further, the lip portion is made of rubber resin.
[0009] Furthermore, an extension plate is provided on one side of the baffle plate close to the outer bearing ring, and the extension plate is in contact with the outer surface of the outer bearing ring.
[0010] Furthermore, the dust covers are arranged in pairs, and the extension plates of the two dust covers abut against each other on the outer surface of the outer bearing ring.
[0011] Furthermore, a fixing ring is integrally formed on the extension plate, and the two dust covers are connected by fixing ring bolts.
[0012] Furthermore, heat dissipation holes are provided on the surface of the dust cover.
[0013] Furthermore, a herringbone-shaped groove is arranged on the baffle plate, the extension plate is made of rubber resin, and clamping rods are arranged at both ends, and the clamping rods are arranged in the herringbone-shaped groove.
[0014] Furthermore, the width of the extension plate is greater than the thickness of the outer bearing ring, and is interference fit with the baffle.
[0015] Compared with the background technology, this technical solution has the following advantages:
[0016] The utility model provides a dust cover on the basis of an ordinary sealed bearing, wherein a lip is provided on the dust cover, and the lip fills a gap between an outer bearing ring and the sealing cover. When the dust cover and the sealing cover are used in coordination, the dustproof performance of the sealed bearing is enhanced. Meanwhile, a baffle is provided at the edge of the outer ring of the dust cover, which is fitted to the outer surface of the outer bearing ring with an interference fit. By arranging structures such as the baffle and the extension plate, the stability of the sealed bearing in use is improved. Meanwhile, in order to reduce heat generation during operation, heat dissipation holes are provided on the surface of the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0019] Figure 2 It is a schematic cross-sectional view of the utility model.
[0020] Figure 3 It is a schematic diagram of the dust cover structure of the utility model.
[0021] Figure 4 This is an installation diagram of the dust cover of the utility model.
[0022] Figure 5 It is a schematic diagram of the heat dissipation holes of the dust cover of the utility model.
[0023] Figure 6 It is a schematic diagram of the herringbone slot of the utility model.
[0024] Figure 7 This is a schematic diagram of an extension plate according to a second embodiment of the present invention.
[0025] In the figure: outer bearing ring 1, inner bearing ring 2, sealing cover 3, ball 4, dust cover 5, baffle 501, lip 502, extension plate 503, fixing ring 504, heat dissipation hole 505, herringbone groove 506, first clamping rod 507a, second clamping rod 507b. DETAILED DESCRIPTION
[0026] First embodiment:
[0027] like Figure 1 As shown, a sealed bearing comprises an outer bearing ring 1, an inner bearing ring 2, a sealing cover 3, and a ball 4. The inner surface of the outer bearing ring 1 is provided with an outer raceway, and the outer surface of the inner bearing ring 2 is provided with an inner raceway. The outer bearing ring 1 is sleeved on the outside of the inner bearing ring 2, and the outer raceway and the inner raceway are combined to form a ball raceway. The ball 4 is arranged in the ball raceway, and the sealing cover 3 is arranged on the outside of the ball raceway.
[0028] like Figure 2 As shown, the sealed bearing also includes a dust cover 5, which includes a baffle 501. A lip 502 is provided on the lower surface of the dust cover 5. When the sealed bearing is working, there will be a gap between the outer bearing ring 1 and the sealing cover 3, and dust will enter from the gap, polluting the lubricant and affecting the lubrication effect, and directly wearing the bearing surface. The dust cover 5 is arranged on the outside of the sealing cover 3. When in use, the baffle 501 is against the outer bearing ring 1, and the lip 502 is inserted into the gap between the outer bearing ring 1 and the sealing cover 3.
[0029] To further improve the dustproof capability of the sealed bearing, the lip 502 is made of rubber resin.
[0030] like Figure 3-Figure 4 As shown, during the operation of the sealed bearing, the dust cover 5 may fall off due to vibration. An extension plate 503 is provided on the side of the baffle plate close to the outer bearing ring 1. The extension plate 503 fits the outer surface of the outer bearing ring 1. Since the sealing covers 3 in the sealed bearing are arranged in pairs, that is, the dust covers 5 are also arranged in pairs, and the extension plates 503 of the two dust covers 5 are against each other on the outer surface of the outer bearing ring 1.
[0031] Furthermore, a fixing ring 504 is integrally formed on the extension plate 503 , and the two dust covers 5 are bolted together via the fixing ring 504 .
[0032] like Figure 5 As shown, after the dust cover is installed, the heat dissipation performance of the sealed bearing will be reduced. In order to improve the heat dissipation performance of the sealed bearing, the dust cover 5 is provided with a heat dissipation hole 505.
[0033] Second embodiment:
[0034] like Figure 6-Figure 7 As shown, in order to optimize the dustproof ability of the sealed bearing, a herringbone groove 506 is provided on the baffle 501, and the extension plate 503 is made of rubber resin, and a first clamping rod 507a and a second clamping rod 507b are provided at both ends, and the first clamping rod 507a and the second clamping rod 507b are arranged in the herringbone groove 506.
[0035] When in use, the first clamping rod 507a is placed in the herringbone clamping groove 506, and after the extension plate 503 surrounds the outer wall of the outer bearing ring 1 for one circle, the second clamping rod 507b is clamped into the herringbone clamping groove 506. The width of the extension plate 503 is greater than the thickness of the outer bearing ring 1, and it has an interference fit with the baffle 501, so that dust is blocked on the outer surface of the extension plate 503.
[0036] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope covered by the present invention.
Claims
1. A sealed bearing, comprising an outer bearing ring (1), an inner bearing ring (2), a sealing cover (3), and a ball (4), wherein the inner surface of the outer bearing ring (1) is provided with an outer raceway, the outer surface of the inner bearing ring (2) is provided with an inner raceway, the outer bearing ring (1) is sleeved outside the inner bearing ring (2), the outer raceway and the inner raceway are combined to form a ball raceway, the ball (4) is arranged in the ball raceway, and the sealing cover (3) is arranged outside the ball raceway, characterized in that: It also comprises a dust cover (5), the dust cover (5) being arranged on the outside of the sealing cover (3), a baffle (501) being provided on the upper surface of the dust cover (5), a lip (502) being provided on the lower surface of the dust cover (5), the baffle (501) being abutted against the outer bearing ring (1), and the lip (502) being inserted into the gap between the outer bearing ring (1) and the sealing cover (3).
2. A sealed bearing according to claim 1, characterized in that: An extension plate (503) is provided on a side of the baffle plate (501) close to the outer bearing ring (1), and the extension plate (503) is in contact with the outer surface of the outer bearing ring (1).
3. A sealed bearing according to claim 2, characterized in that: The dust covers (5) are arranged in pairs, and the extension plates (503) of the two dust covers (5) abut against each other on the outer surface of the outer bearing ring (1).
4. A sealed bearing according to claim 3, characterized in that: A fixing ring (504) is integrally formed on the extension plate (503), and the two dust covers (5) are bolted together via the fixing ring (504).
5. A sealed bearing according to claim 1, characterized in that: The lip portion (502) is made of rubber resin.
6. A sealed bearing according to claim 1, characterized in that: The dust cover (5) is provided with a heat dissipation hole (505).
7. A sealed bearing according to claim 2, characterized in that: The baffle plate (501) is provided with a herringbone-shaped clamping groove (506); the extension plate (503) is made of rubber resin and has a first clamping rod (507a) and a second clamping rod (507b) at both ends.
8. A sealed bearing according to claim 2, characterized in that: The width of the extension plate (503) is greater than the thickness of the outer bearing ring (1), and is interference fit with the baffle plate (501).