Low-noise operation bearing of motor

Abstract

The utility model discloses a low-noise operation bearing of a motor, and relates to the technical field of bearings. The bearing comprises an outer ring, an inner ring is arranged in an inner cavity of the outer ring, a retainer is arranged between the outer ring and the inner ring, balls are movably connected to an inner cavity of the retainer, and an oil storage tank is arranged in the outer ring. The inner ring drives the balls to rotate along with rotation of the motor shaft, the paraffin expansion blocks are heated to expand by heat generated by high-speed rotation of the balls, the movable frame is extruded to move, lubricating oil in the oil storage tank flows into the surfaces of the balls to play a role in lubrication, and friction force between the balls and the inner ring and the outer ring is reduced along with inflow of the lubricating oil. Not only is noise generated by friction reduced, but also the temperature is reduced, when the temperature is reduced, the paraffin expansion block shrinks, the movable frame resets to block the through hole, oil injection is stopped, injection of lubricating oil is controlled, and lubricating oil waste is avoided while lubrication is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and in particular relates to a bearing for low-noise operation of motors. Background Technology

[0002] Bearings are an indispensable key component in motors. Their main function is to support the rotating shaft and the parts on the shaft, maintain the rotational accuracy of the shaft, and reduce friction and wear during rotation.

[0003] Currently, bearings used in motors on the market generally suffer from excessive noise after prolonged operation. This is mainly due to poor lubrication performance. Traditional bearing lubrication methods often involve applying grease or injecting lubricating oil. However, as the motor continues to run, the grease or lubricating oil gradually depletes and leaks, failing to form a complete lubricating film on the contact surfaces of the rolling elements and inner and outer rings. Once the lubricating film is incomplete, the coefficient of friction between the rolling elements and the inner and outer rings increases. The friction and vibration generated by direct contact between the metal surfaces further exacerbate the bearing's operating noise.

[0004] To address these issues, we provide a bearing for low-noise motor operation. Utility Model Content

[0005] The purpose of this invention is to provide a bearing for low-noise motor operation. By coordinating the outer ring, inner ring, and oil injection hole assembly, it solves the problem of poor lubrication performance of existing bearings, which leads to high noise during long-term operation.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a bearing for low-noise motor operation, comprising an outer ring, an inner ring within the inner cavity of the outer ring, a cage between the outer and inner rings, balls movably connected to the inner cavity of the cage, an oil reservoir inside the outer ring, and an oil injection hole assembly on the inner wall of the outer ring, the oil injection hole assembly including an oil drain hole, the oil drain hole being opened on the inner wall of the outer ring, a partition fixedly connected to the inner wall of the oil drain hole, a movable frame movably connected to one side of the inner cavity of the oil drain hole, and a paraffin wax expansion block fixedly connected to one side of the movable frame.

[0008] The present invention is further provided with a sealing ring between the outer ring and the inner ring, and the surface of the sealing ring is provided with heat dissipation holes. The sealing ring can prevent a large amount of external dust from entering between the outer ring and the inner ring, and the heat dissipation holes on its surface allow the heat between the outer ring and the inner ring to dissipate quickly.

[0009] The present invention is further configured such that both the front and back sides of the outer ring are provided with adding holes, and the inner cavity of the adding hole is provided with a sealing element. By removing the sealing element from the adding hole, lubricating oil can be added to the inner cavity of the oil reservoir through the adding hole.

[0010] The present invention is further configured such that an anti-slip ring is fixedly connected to the inner wall of the inner ring, and the inner wall of the anti-slip ring is provided with anti-slip particles. When the motor shaft is inserted into the inner cavity of the inner ring, the anti-slip ring can further ensure that the motor shaft will not loosen in the inner cavity of the inner ring.

[0011] The present invention is further configured such that protective rings are fixedly connected to both the front and back sides of the inner ring. The material of the protective rings is the same as that of the inner ring. After the motor shaft passes through the inner cavity of the inner ring, the two protective rings wrap around the surface of the motor shaft, which can protect the connection between the motor shaft and the inner ring and reduce the penetration of dust and impurities.

[0012] The present invention is further configured such that a lubricating sheet is fixedly connected to the inner wall of the groove on the inner ring surface, and one side of the lubricating sheet is in contact with the surface of the ball. The lubricating sheet, which has a lubricating effect, can reduce the friction between the surface of the ball and the inner wall of the groove on the inner ring surface, and further reduce the operating noise.

[0013] The present invention is further configured such that a receiving groove is provided on one side of the inner cavity of the oil drain hole, one end of the movable frame is movably connected to the inner cavity of the receiving groove, an elastic element is provided on one side of the inner cavity of the receiving groove, the movable frame can move in the receiving groove, and the elastic element can provide a restoring force to the movable frame when the paraffin expansion block contracts.

[0014] The present invention has the following beneficial effects.

[0015] 1. In this utility model, the inner ring rotates with the motor shaft, driving the ball bearings to rotate. The heat generated by the high-speed rotation of the ball bearings causes the paraffin expansion block to expand, squeezing the movable frame to move. This allows the lubricating oil in the oil reservoir to flow into the surface of the ball bearings, providing lubrication. As the lubricating oil flows in, the friction between the ball bearings and the inner and outer rings decreases, reducing noise caused by friction and lowering the temperature. When the temperature drops, the paraffin expansion block contracts, and the movable frame resets, blocking the through hole and stopping oil injection. This achieves control over the injection of lubricating oil, ensuring lubrication while avoiding waste.

[0016] 2. This utility model inserts the motor shaft into the inner cavity of the inner ring, and the anti-slip ring presses against the surface of the motor shaft, ensuring the tightness of the connection between the motor shaft and the inner ring and improving the stability of the structure. At the same time, the two protective rings wrapped around the surface of the motor shaft can effectively protect the connection between the motor shaft and the inner ring, reduce the infiltration of dust and impurities, and reduce the impact of impurities on the operation of the bearing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional diagram of a bearing for low-noise operation of an electric motor.

[0019] Figure 2 This is a cross-sectional schematic diagram of the sealing ring in a bearing for low-noise operation of an electric motor.

[0020] Figure 3 This is a cross-sectional schematic diagram of a bearing for low-noise operation of an electric motor.

[0021] Figure 4 A bearing for low-noise operation of an electric motor Figure 3 A magnified view of a portion of point A in the middle.

[0022] Figure 5 This is a schematic diagram of the structure of a bearing for low-noise operation of an electric motor.

[0023] In the attached diagram: 1. Outer ring; 2. Inner ring; 3. Cage; 4. Ball bearing; 5. Oil reservoir; 6. Oil injection hole assembly; 601. Oil drain hole; 602. Baffle plate; 603. Movable frame; 604. Paraffin expansion block; 7. Sealing ring; 8. Anti-slip ring; 9. Protective ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5 This utility model is a bearing for low-noise operation of an electric motor, including an outer ring 1, an inner ring 2 disposed in the inner cavity of the outer ring 1, a cage 3 disposed between the outer ring 1 and the inner ring 2, a ball bearing 4 movably connected to the inner cavity of the cage 3, an oil reservoir 5 disposed inside the outer ring 1, and an oil injection hole assembly 6 disposed on the inner wall of the outer ring 1, the oil injection hole assembly 6 including an oil drain hole 601, the oil drain hole 601 being opened in the inner wall of the outer ring 1, a partition 602 fixedly connected to the inner wall of the oil drain hole 601, a movable frame 603 movably connected to one side of the inner cavity of the oil drain hole 601, and a paraffin expansion block 604 fixedly connected to one side of the movable frame 603.

[0027] Specifically: The motor shaft is inserted into the inner cavity of the inner ring 2. The inner ring 2 rotates with the motor shaft, which drives the ball bearing 4 to rotate. The ball bearing 4 rotates at high speed, and its surface will rub against the inner ring 2 and the outer ring 1 to generate heat. The heat causes the paraffin expansion block 604 to expand. After the paraffin expansion block 604 expands, it will squeeze the movable frame 603 to move until the through hole on the surface of the movable frame 603 is aligned with the through hole on the surface of the partition plate 602. The lubricating oil in the inner cavity of the oil reservoir 5 flows into the surface of the ball bearing 4 through the through hole, which plays a lubricating role. As the lubricating oil flows in, the friction between the ball bearing 4 and the inner ring 2 and the outer ring 1 decreases, the temperature decreases, the paraffin expansion block 604 contracts, the movable frame 603 resets and blocks the through hole on the surface of the partition plate 602, and the oil injection stops.

[0028] Example 2

[0029] Please see Figure 1-5 Based on Embodiment 1, a sealing ring 7 is provided between the outer ring 1 and the inner ring 2. The surface of the sealing ring 7 is provided with heat dissipation holes. Both the front and back of the outer ring 1 are provided with addition holes. The inner cavity of the addition holes is provided with a sealing element. An anti-slip ring 8 is fixedly connected to the inner wall of the inner ring 2. The inner wall of the anti-slip ring 8 is provided with anti-slip particles. Both the front and back of the inner ring 2 are fixedly connected with a protective ring 9. The material of the protective ring 9 is the same as that of the inner ring 2. A lubricating plate is fixedly connected to the inner wall of the groove on the surface of the inner ring 2. One side of the lubricating plate is in contact with the surface of the ball 4. A receiving groove is provided on one side of the inner cavity of the oil drain hole 601. One end of the movable frame 603 is movably connected to the inner cavity of the receiving groove.

[0030] Specifically: the sealing ring 7 can prevent a large amount of external dust from entering between the outer ring 1 and the inner ring 2, and the heat dissipation holes on its surface allow the heat between the outer ring 1 and the inner ring 2 to dissipate quickly. After removing the seal from the adding hole, lubricating oil can be added to the inner cavity of the oil reservoir 5 through the adding hole. When the motor shaft is inserted into the inner cavity of the inner ring 2, the anti-slip ring 8 can further ensure that the motor shaft will not loosen in the inner cavity of the inner ring 2. After the motor shaft passes through the inner cavity of the inner ring 2, the two protective rings 9 wrap around the surface of the motor shaft, which can protect the connection between the motor shaft and the inner ring 2 and reduce the penetration of dust and impurities. The lubricating sheet with lubrication function can reduce the friction between the surface of the ball 4 and the inner wall of the groove on the surface of the inner ring 2, further reducing the operating noise. An elastic element is provided on one side of the inner cavity of the receiving groove, and the movable frame 603 can move in the receiving groove. The elastic element can provide a restoring force to the movable frame 603 when the paraffin expansion block 604 contracts.

[0031] The working principle of this utility model is as follows: An appropriate amount of lubricating oil is added to the oil reservoir 5 inside the outer ring 1 through the adding hole. Then, the motor shaft is inserted into the inner cavity of the inner ring 2. The anti-slip ring 8 presses against the surface of the motor shaft to ensure the tightness of the connection between the motor shaft and the inner ring 2. Two protective rings 9 wrap around the surface of the motor shaft, protecting the connection between the motor shaft and the inner ring 2 and reducing the penetration of dust and impurities. When the motor is turned on, the inner ring 2 rotates with the motor shaft. The rotation of the inner ring 2 drives the ball bearings 4 to rotate. The ball bearings 4 rotate at high speed, and their surfaces come into contact with the inner ring 2 and the outer ring 1. The friction between them generates heat, which causes the paraffin expansion block 604 to expand. After the paraffin expansion block 604 expands, it will squeeze the movable frame 603 to move until the through hole on the surface of the movable frame 603 is aligned with the through hole on the surface of the partition plate 602. The lubricating oil in the inner cavity of the oil reservoir 5 flows into the surface of the ball 4 through the through hole, which plays a lubricating role. As the lubricating oil flows in, the friction between the ball 4 and the inner ring 2 and the outer ring 1 decreases, the temperature decreases, the paraffin expansion block 604 contracts, the movable frame 603 resets and blocks the through hole on the surface of the partition plate 602, and the oil injection stops.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A bearing for low-noise operation of an electric motor, comprising an outer ring (1), characterized in that: The inner cavity of the outer ring (1) is provided with an inner ring (2), and a retainer (3) is provided between the outer ring (1) and the inner ring (2). A ball bearing (4) is movably connected to the inner cavity of the retainer (3). An oil reservoir (5) is provided inside the outer ring (1), and an oil injection hole assembly (6) is provided on the inner wall of the outer ring (1). The oil injection hole assembly (6) includes an oil drain hole (601), which is opened on the inner wall of the outer ring (1). A partition (602) is fixedly connected to the inner wall of the oil drain hole (601). A movable frame (603) is movably connected to one side of the inner cavity of the oil drain hole (601), and a paraffin expansion block (604) is fixedly connected to one side of the movable frame (603).

2. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: A sealing ring (7) is provided between the outer ring (1) and the inner ring (2), and the surface of the sealing ring (7) is provided with heat dissipation holes.

3. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: The outer ring (1) has an addition hole on both the front and back sides, and the inner cavity of the addition hole is provided with a sealing element.

4. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: The inner wall of the inner ring (2) is fixedly connected to an anti-slip ring (8), and the inner wall of the anti-slip ring (8) is provided with anti-slip particles.

5. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: The inner ring (2) is fixedly connected to both the front and back sides with protective rings (9), and the material of the protective rings (9) is the same as that of the inner ring (2).

6. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: A lubricating plate is fixedly connected to the inner wall of the groove on the surface of the inner ring (2), and one side of the lubricating plate is in contact with the surface of the ball (4).

7. The bearing for low-noise operation of an electric motor according to claim 1, characterized in that: A receiving groove is provided on one side of the inner cavity of the oil drain hole (601), and one end of the movable frame (603) is movably connected to the inner cavity of the receiving groove. An elastic element is provided on one side of the inner cavity of the receiving groove.

Images