Low noise motor bearing

Abstract

The utility model discloses a low noise motor bearing relates to motor bearing field, including the outer ring and the inner ring, the outer wall both ends of outer ring are fixed with the boss, the end of boss is installed with the boss ring, both sides of outer ring all are installed with the sealing cover, the outer wall of sealing cover is provided with the clamping plate, the one side of clamping plate is provided with the clamping groove, one side of sealing plate is provided with three groups of fender, the outer wall of inner ring is provided with three groups of recess. The utility model sealing cover installs to one side of outer ring, and one side of sealing plate fixedly installed on sealing cover inner wall is provided with three groups of fender, and the outer wall of inner ring is provided with three groups of recess, and the clearance between fender and recess is only 0.2mm, and three groups of fender and recess form multilayer blocking structure, so that fender can gradually block the tiny particle that tries to penetrate to the bearing inside between the gap between inner ring and sealing cover, and then reduce the dust and tiny particle of outside through the gap between sealing cover and inner ring and enter the bearing inside.

Description

Technical Field

[0001] This utility model relates to the field of motor bearings, specifically a low-noise motor bearing. Background Technology

[0002] Low-noise motor bearings are a type of precision bearing component specifically designed to reduce noise during motor operation. They are widely used in noise-sensitive fields such as household appliances, precision instruments, medical equipment, and industrial silent motors. The core of their design is to optimize the internal structure of the bearing, control machining errors, and use appropriate noise reduction solutions to achieve significantly lower vibration and friction noise generated by the bearing rotation during motor operation compared to conventional motor bearings.

[0003] To further ensure the quiet performance and service life of low-noise motor bearings, a low-viscosity, high-lubricity special bearing grease is usually evenly applied inside the bearing. In addition, to prevent lubricant leakage and the intrusion of external impurities, sealing caps are usually installed on both sides of the low-noise motor bearing. In the existing technology, the sealing cap is mainly aligned with the groove of the bearing outer ring by its annular edge. A special pressing tool is used to apply force evenly along the circumference of the sealing cap to fix the edge of the sealing cap into the groove, thereby installing the sealing cap on both sides of the bearing to protect the inside of the bearing.

[0004] However, the sealing covers of existing low-noise motor bearings are limited by the bearing's structural design and assembly process. The sealing covers are mainly fixed to the outer ring of the bearing through edge grooves. To prevent friction between the sealing cover and the inner ring when the bearing rotates, a certain gap is usually reserved between the inner edge of the sealing cover and the inner ring of the bearing. In practical applications, a large amount of dust and fine particles from the external environment can easily enter the bearing through this gap, resulting in a large amount of impurities in the lubricant inside the bearing. These impurities not only significantly increase the bearing's friction noise, but also generate hard friction with the rolling elements and raceways during bearing rotation, leading to scratches on the inner raceways and wear of the rolling elements, seriously affecting the bearing's service life and operational stability. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a low-noise motor bearing to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-noise motor bearing, comprising an outer ring and an inner ring, wherein multiple sets of balls are installed inside the outer ring, and an inner ring is provided on one side of each ball. The outer wall of the ball contacts the inner wall of the outer ring and the outer wall of the inner ring. A convex ring is fixed at both ends of the outer wall of the outer ring, and a convex ring is installed at the end of each convex ring. A sealing cap is installed on both sides of the outer ring, and a retaining plate is provided on the outer wall of the sealing cap. A retaining groove is provided on one side of the retaining plate. A sealing plate is fixed on the inner wall of the sealing cap, and three sets of retaining rings are provided on one side of the sealing plate. Three sets of grooves are provided on the outer wall of the inner ring.

[0007] By adopting the above technical solution, the problem of a large amount of dust and fine particles easily entering the bearing through the gap between the sealing cover and the inner ring of the bearing is solved. When the sealing cover is installed on the outer ring side, three sets of retaining rings are set on one side of the sealing plate fixedly installed on the inner wall of the sealing cover. At the same time, three sets of grooves are set on the outer wall of the inner ring. The gap between the retaining rings and the grooves is only 0.2mm. The three sets of retaining rings and grooves form a multi-layer blocking structure, which enables the retaining rings to gradually block fine particles that attempt to penetrate into the bearing through the gap between the inner ring and the sealing cover, thereby reducing the entry of external dust and fine particles into the bearing through the gap between the sealing cover and the inner ring.

[0008] The present invention is further configured such that the outer diameter of the sealing cover is equal to the outer diameter of the convex ring, and the card plate is made of nitrile rubber.

[0009] Preferably, the operator can fold the card plate outwards. The nitrile rubber card plate is folded at a certain angle, so that when the card plate is pressed towards the convex ring, the card plate can be fitted onto the convex ring.

[0010] The present invention is further configured such that the width of the slot is equal to the thickness of the convex ring, and the edges of the convex ring are chamfered.

[0011] Preferably, the inner walls of the slots inside the card plate are tightly fitted to the wall of the convex ring, so that the card plate can not only fix the sealing cover on one side of the outer wall of the outer ring, but also seal the gap between the sealing cover and the outer ring.

[0012] The present invention is further configured such that the inner wall diameter of the slot is greater than the outer diameter of the convex ring.

[0013] Preferably, when the card plate is folded outward, it can be easily snapped onto the protruding ring.

[0014] The present invention is further configured such that the inner diameter of the sealing plate is smaller than the inner diameter of the inner ring, and the sealing plate and the sealing cover are made of the same material.

[0015] Preferably, the sealing plate covers the gap between the sealing cap and the inner ring.

[0016] The present invention is further configured such that the distance between the retaining ring and the groove is 0.2 mm, and there is a gap between the sealing plate and the inner ring.

[0017] Preferably, the sealing cover, without contacting the inner ring wall, forms a multi-layered barrier structure with the retaining ring on the sealing cover and the groove on the outer wall of the inner ring, thereby reducing the entry of external dust and fine particles into the bearing through the gap between the sealing cover and the inner ring.

[0018] The present invention is further configured such that a retainer is installed inside the outer ring, and the retainer is sleeved on the ball bearing.

[0019] Preferably, the spacing between multiple sets of balls inside the outer ring is controlled to ensure the orderly rolling of the balls inside the outer ring.

[0020] In summary, the present invention has the following main advantages:

[0021] 1. This utility model solves the problem that a large amount of dust and fine particles can easily enter the bearing through the gap between the sealing cover and the bearing inner ring by setting an outer ring, an inner ring, a sealing cover, a sealing plate, a retaining ring, and a groove. When the sealing cover is installed on the outer ring side, three sets of retaining rings are set on the sealing plate side fixedly installed on the inner wall of the sealing cover. At the same time, three sets of grooves are set on the outer wall of the inner ring. The gap between the retaining rings and the grooves is only 0.2mm. The three sets of retaining rings and grooves form a multi-layer blocking structure, which enables the retaining rings to gradually block fine particles that attempt to penetrate into the bearing through the gap between the inner ring and the sealing cover, thereby reducing the entry of external dust and fine particles into the bearing through the gap between the sealing cover and the inner ring.

[0022] 2. This utility model solves the problem of difficult installation and disassembly of the sealing cover by setting a convex ring, a convex ring, a retaining plate, and a retaining groove. The retaining plate connected to the edge of the sealing cover is sleeved on the bottom of the convex ring fixed on one side of the outer ring. The convex ring fixed on one side of the retaining plate is embedded in the retaining groove inside the retaining plate. Because the retaining plate is made of nitrile rubber, it has good elastic deformation ability, which allows the personnel to fold the retaining plate outward. The retaining plate is folded at a certain angle, so when the retaining plate is pressed towards the convex ring, the retaining plate can be sleeved on the convex ring, thereby fixing the sealing cover to the outer wall of the outer ring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0024] Figure 2 This is a diagram showing the internal structure of the bearing of this utility model;

[0025] Figure 3This is a schematic diagram of the outer ring structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the sealing cap of this utility model;

[0027] Figure 5 This is a partial sectional view of the sealing cap of this utility model;

[0028] Figure 6 This is a schematic diagram of the installation of the sealing cap of this utility model;

[0029] Figure 7 This is a schematic diagram of the groove design of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Outer ring; 101. Convex ring; 102. Convex ring; 2. Ball; 201. Cage; 3. Inner ring; 301. Groove; 4. Sealing cap; 401. Clamping plate; 402. Clamping groove; 403. Sealing plate; 404. Retaining ring; 405. Slot. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] First embodiment:

[0035] Please see Figure 1 — Figure 6The system includes an outer ring 1 and an inner ring 3. Multiple sets of balls 2 are installed inside the outer ring 1. An inner ring 3 is located on one side of each ball 2. The outer wall of the ball 2 contacts the inner wall of the outer ring 1 and the outer wall of the inner ring 3. Protruding rings 101 are fixed to both ends of the outer wall of the outer ring 1, and protruding rings 102 are installed at the ends of the protruding rings 101. Sealing covers 4 are installed on both sides of the outer ring 1. A retaining plate 401 is provided on the outer wall of the sealing cover 4, and a retaining groove 402 is opened on one side of the retaining plate 401. A sealing plate 403 is fixed to the inner wall of the sealing cover 4, and three sets of retaining rings 404 are provided on one side of the sealing plate 403. Three sets of grooves 301 are opened on the outer wall of the inner ring 3. This design effectively prevents large amounts of dust and fine particles from easily entering the sealed area. To address the issue of dust and fine particles entering the bearing through the gap between the cover and the inner ring, when the cover 4 is installed on one side of the outer ring 1, three sets of retaining rings 404 are provided on one side of the sealing plate 403 fixedly installed on the inner wall of the cover 4. At the same time, three sets of grooves 301 are provided on the outer wall of the inner ring 3. The gap between the retaining rings 404 and the grooves 301 is only 0.2mm. The three sets of retaining rings 404 and the grooves 301 form a multi-layer blocking structure, which allows the retaining rings 404 to gradually block fine particles that attempt to penetrate into the bearing through the gap between the inner ring 3 and the cover 4, thereby reducing the entry of external dust and fine particles into the bearing through the gap between the cover 4 and the inner ring 3.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The outer diameter of the sealing cover 4 is equal to the outer diameter of the convex ring 101. The clamping plate 401 is made of nitrile rubber. Personnel can fold the clamping plate 401 outward. The nitrile rubber clamping plate 401 is folded at a certain angle, so that when the clamping plate 401 is pressed towards the convex ring 101, the clamping plate 401 can be fitted onto the convex ring 101.

[0037] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 Figure 6 The width of the slot 402 is equal to the thickness of the convex ring 102. The edges of the convex ring 102 are chamfered. The inner walls of the slot 402 inside the card plate 401 are tightly fitted to the wall of the convex ring 102, so that the card plate 401 can not only fix the sealing cover 4 on one side of the outer wall of the outer ring 1, but also seal the gap between the sealing cover 4 and the outer ring 1.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The inner diameter of the slot 402 is larger than the outer diameter of the protruding ring 102. When the card plate 401 is folded outward, the card plate 401 can be easily snapped onto the protruding ring 102.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The inner diameter of the sealing plate 403 is smaller than the inner diameter of the inner ring 3. The sealing plate 403 and the sealing cover 4 are made of the same material. The sealing plate 403 covers the gap between the sealing cover 4 and the inner ring 3.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The distance between the retaining ring 404 and the groove 301 is set to 0.2mm. There is a gap between the sealing plate 403 and the inner ring 3. The sealing cover 4 does not contact the wall of the inner ring 3. The retaining ring 404 on the sealing cover 4 and the groove 301 on the outer wall of the inner ring 3 form a multi-layer blocking structure, thereby reducing the entry of external dust and fine particles into the bearing through the gap between the sealing cover 4 and the inner ring 3.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 The outer ring 1 is equipped with a retainer 201, which is fitted onto the ball 2. The retainer 201 limits the spacing between the multiple sets of ball 2 inside the outer ring 1, thereby ensuring the orderly rolling of the ball 2 inside the outer ring 1.

[0042] Second embodiment:

[0043] Please see Figure 7 The outer wall of the card plate 401 is provided with a set of grooves 405. The width of the grooves 405 is less than the thickness of the card plate 401, and the depth of the grooves 405 is less than the width of the card plate 401. When the sealing cover 4 is removed from one side of the outer ring 1, the personnel can easily flip one corner of the card plate 401 through the grooves 405, so as to facilitate the personnel to pry open and remove the sealing cover 4 from one side of the outer ring 1.

[0044] In practical operation, after the bearing is assembled, lubricant is evenly applied to the balls 2 and the cage 201. Then, the retaining plate 401 connected to the edge of the sealing cover 4 is fitted onto the bottom of the convex ring 101 fixed on one side of the outer wall of the outer ring 1, so that the convex ring 102 fixed on one side of the retaining plate convex ring 101 is embedded into the retaining groove 402 inside the retaining plate 401. Because the retaining plate 401 is made of nitrile rubber, it has good elastic deformation ability, allowing personnel to fold the retaining plate 401 outward. The retaining plate 401 is folded at a certain angle, so that when the retaining plate 401 is pressed towards the convex ring 101, the retaining plate 401 can be fitted onto the convex ring 101. The width of the slot 402 is equal to the thickness of the convex ring 102, so that the card plate 401 can seal the gap between the sealing cover 4 and the convex ring 102. Furthermore, when the sealing cover 4 is fitted and fixed on the convex ring 101, three sets of retaining rings 404 are provided on one side of the sealing plate 403 connected to the inner wall of the sealing cover 4. The gap between the retaining rings 404 and the groove 301 opened on the outer wall of the inner ring 3 is only 0.2mm. This allows the retaining rings 404 on the sealing cover 4 and the groove 301 on the outer wall of the inner ring 3 to form a multi-layer barrier structure without contacting the inner ring 3 wall. This reduces the amount of external dust and fine particles that can enter the bearing through the gap between the sealing cover 4 and the inner ring 3.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A low-noise motor bearing, comprising an outer ring (1) and an inner ring (3), characterized in that: Multiple sets of ball bearings (2) are installed inside the outer ring (1). An inner ring (3) is provided on one side of the ball bearings (2). The outer wall of the ball bearings (2) is in contact with the inner wall of the outer ring (1) and the outer wall of the inner ring (3). A convex ring (101) is fixed at both ends of the outer wall of the outer ring (1). A convex ring (102) is installed at the end of the convex ring (101). A sealing cover (4) is installed on both sides of the outer ring (1). A retaining plate (401) is provided on the outer wall of the sealing cover (4). A retaining groove (402) is opened on one side of the retaining plate (401). A sealing plate (403) is fixed on the inner wall of the sealing cover (4). Three sets of retaining rings (404) are provided on one side of the sealing plate (403). Three sets of grooves (301) are opened on the outer wall of the inner ring (3).

2. The low-noise motor bearing according to claim 1, characterized in that: The outer diameter of the sealing cap (4) is equal to the outer diameter of the convex ring (101), and the card plate (401) is made of nitrile rubber.

3. The low-noise motor bearing according to claim 1, characterized in that: The width of the slot (402) is equal to the thickness of the convex ring (102), and the edges of the convex ring (102) are chamfered.

4. A low-noise motor bearing according to claim 1, characterized in that: The inner diameter of the slot (402) is greater than the outer diameter of the convex ring (102).

5. A low-noise motor bearing according to claim 1, characterized in that: The inner diameter of the sealing plate (403) is smaller than the inner diameter of the inner ring (3), and the sealing plate (403) and the sealing cover (4) are made of the same material.

6. A low-noise motor bearing according to claim 1, characterized in that: The distance between the retaining ring (404) and the groove (301) is set to 0.2 mm, and there is a gap between the sealing plate (403) and the inner ring (3).

7. A low-noise motor bearing according to claim 1, characterized in that: The outer ring (1) is fitted with a retainer (201), and the retainer (201) is sleeved on the ball (2).

8. A low-noise motor bearing according to claim 1, characterized in that: A groove (405) is provided at one end of the outer wall of the card plate (401).

9. A low-noise motor bearing according to claim 8, characterized in that: The depth of the slot (405) is less than the width of the card plate (401), and the width of the slot (405) is less than the thickness of the card plate (401).

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