Damping and noise-reducing motor rotor structure

Abstract

The utility model relates to the technical field of motor noise reduction, in particular to a motor rotor structure for shock absorption and noise reduction, which reduces noise and vibration during operation of a motor, and is convenient to use and high in reliability. Comprising a rotor assembly, a motor shell bearing seat and a bearing, the rotor assembly is rotatably installed on a bearing inner ring of the bearing, the bearing is fixedly installed on the motor shell bearing seat, and the rotor assembly is in clearance fit with the bearing inner ring of the bearing; the motor further comprises a shock absorption and noise reduction mechanism, the rotor assembly is provided with the shock absorption and noise reduction mechanism, the shock absorption and noise reduction mechanism makes contact with the bearing, and the shock absorption and noise reduction mechanism has the shock absorption and noise reduction functions.

Description

Technical Field

[0001] The utility model relates to the technical field of motor noise reduction, in particular to a motor rotor structure with vibration reduction and noise reduction. Background Art

[0002] The rotor is an important component of the motor. The rotor is connected to the bearing seat on the motor through bearings. During the design, in order to facilitate installation, the inner ring of the bearing on the bearing and the rotor shaft are clearance-fitted. Due to the gap between the rotor shaft and the inner ring of the bearing, the rotor shaft is prone to slight collisions with the inner ring of the bearing during rotation, resulting in wear between the rotor shaft and the bearing seat, and noise, causing motor vibration and high noise, so a motor rotor structure with shock absorption and noise reduction is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a motor rotor structure with reduced noise and vibration during motor operation, which is easy to use and has high reliability.

[0004] The motor rotor structure with vibration reduction and noise reduction of the utility model includes a rotor assembly, a motor housing bearing seat and a bearing. The rotor assembly is rotatably mounted on the bearing inner ring of the bearing, and the bearing is fixedly mounted on the motor housing bearing seat. There is a clearance fit between the rotor assembly and the bearing inner ring of the bearing. The utility model also includes a vibration reduction and noise reduction mechanism. The rotor assembly is provided with a vibration reduction and noise reduction mechanism, which is in contact with the bearing and has the function of vibration reduction and noise reduction. Through the above arrangement, when the rotor assembly is rotating, the vibration reduction and noise reduction mechanism can reduce the noise and vibration generated by the rotor assembly during rotation. The noise and vibration during motor operation are reduced, and the utility model is easy to use and has high reliability.

[0005] Preferably, the outer ring of the bearing and the bearing seat of the motor housing are in interference fit; through the above arrangement, the bearing and the bearing seat of the motor housing are made tighter, which prevents the bearing from shaking on the bearing seat of the motor housing and improves convenience.

[0006] Preferably, the shock-absorbing and noise-reducing mechanism includes a sealing ring, and an annular groove with the axis of the rotor assembly as the center is provided on the outer wall of the rotor assembly. The sealing ring is installed in the annular groove of the rotor assembly, and the sealing ring contacts the inner ring of the bearing. The sealing ring is elastic; through the above arrangement, when the rotor assembly is rotating, due to the presence of the sealing ring between the rotor assembly and the inner ring of the bearing, the sealing ring prevents the rotor assembly from rubbing and colliding with the inner ring of the bearing during rotation, thereby reducing the noise and vibration of the rotor assembly during operation and improving the reliability during use.

[0007] Preferably, annular grooves are provided on both the upper and lower parts of the rotor assembly, and sealing rings are provided in the annular grooves.

[0008] Preferably, the number of the annular grooves is 4, and the number of the sealing rings is 4.

[0009] Preferably, two annular grooves are provided on the upper portion of the rotor assembly, and two annular grooves are provided on the lower portion of the rotor assembly, and four sealing rings are respectively installed in the four annular grooves.

[0010] Compared with the prior art, the utility model has the following beneficial effects: reducing noise and vibration during motor operation, being easy to use and having high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structural diagram of the present utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the sealing ring, rotor assembly and bearing;

[0013] Figure 3 It is a structural diagram of the rotor assembly.

[0014] Markings in the accompanying drawings: 1. rotor assembly; 2. motor housing bearing seat; 3. bearing; 4. sealing ring. DETAILED DESCRIPTION

[0015] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0016] Example

[0017] like Figures 1 to 3 The motor rotor structure with vibration reduction and noise reduction of the present invention includes a rotor assembly 1, a motor housing bearing seat 2, a bearing 3 and a vibration reduction and noise reduction mechanism. The rotor assembly 1 is rotatably mounted on the bearing inner ring of the bearing 3, and the bearing 3 is fixedly mounted on the motor housing bearing seat 2. There is a clearance fit between the rotor assembly 1 and the bearing inner ring of the bearing 3. The rotor assembly 1 is provided with a vibration reduction and noise reduction mechanism, which contacts the bearing 3 and has the function of vibration reduction and noise reduction. Through the above arrangement, when the rotor assembly 1 is rotating, the vibration reduction and noise reduction mechanism can reduce the noise and vibration generated by the rotor assembly 1 during rotation. The noise and vibration during motor operation are reduced, and the system is easy to use and has high reliability.

[0018] The outer ring of the bearing 3 and the motor housing bearing seat 2 are in interference fit; through the above arrangement, the bearing 3 and the motor housing bearing seat 2 are made tighter, which prevents the bearing 3 from shaking on the motor housing bearing seat 2 and improves convenience.

[0019] Two annular grooves are provided on the upper part of the rotor assembly 1, and two annular grooves are provided on the lower part of the rotor assembly 1. Four sealing rings 4 are respectively installed in the four annular grooves. The sealing rings 4 are elastic and contact the inner ring of the bearing 3. The sealing rings 4 are elastic; when the rotor assembly 1 is rotating, due to the presence of the sealing ring 4 between the rotor assembly 1 and the inner ring of the bearing 3, the sealing ring 4 prevents the rotor assembly 1 from rubbing and colliding with the inner ring of the bearing 3 during rotation, thereby reducing the noise and vibration of the rotor assembly 1 during operation and improving the reliability during use.

[0020] The sealing ring 4 of the motor rotor structure for vibration reduction and noise reduction of the present invention is purchased on the market, and technicians in this industry only need to install and operate it according to the accompanying instruction manual without the need for creative work by technicians in this field.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A motor rotor structure for vibration reduction and noise reduction, comprising a rotor assembly (1), a motor housing shaft The support (2) and the bearing (3), the rotor assembly (1) is rotatably mounted in the bearing (3) The bearing (3) is fixedly mounted on the motor housing bearing seat (2), and the rotor assembly (1) is fixedly mounted on the motor housing bearing seat (2). The inner rings of the bearings (3) are clearance-fitted; the characteristic is that, Also includes shock and noise reduction The rotor assembly (1) is provided with a vibration reduction and noise reduction mechanism, and the vibration reduction and noise reduction mechanism and the bearing (3) Contact, the shock-absorbing and noise-reducing mechanism has the function of shock-absorbing and noise-reducing; The vibration reduction and noise reduction mechanism includes a sealing ring (4), an outer side wall of the rotor assembly (1) An annular groove with the axis of the rotor assembly (1) as the center is provided on the upper surface, and the sealing ring (4) is installed In the annular groove of the rotor assembly (1), the sealing ring (4) is in contact with the inner ring of the bearing (3). The sealing ring (4) is elastic; The upper and lower parts of the rotor assembly (1) are both provided with annular grooves, and the annular grooves are provided with A sealing ring (4) is provided.

2. A motor rotor structure for vibration and noise reduction as claimed in claim 1, characterized in that There is an interference fit between the outer ring of the bearing (3) and the motor housing bearing seat (2).

3. A motor rotor structure for vibration and noise reduction as claimed in claim 1, characterized in that The number of the annular grooves is 4, and the number of the sealing rings (4) is 4.

4. A motor rotor structure for vibration and noise reduction as claimed in claim 3, characterized in that The upper portion of the rotor assembly (1) is provided with two annular grooves. There are two annular grooves at the bottom of the housing, and four sealing rings (4) are installed in the four annular grooves. Inside.

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