Sealing and damping mechanism for motor main shaft and motor

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a sealing and damping mechanism for a motor main shaft and a motor. Wherein the damping sleeve comprises a framework which is arranged outside the main shaft in a sleeving manner; the damping sleeve is arranged on the outer wall of the motor main shaft in a sleeving mode, the damping sleeve is composed of the framework and the flexible material wrapping the framework, the framework of the damping sleeve is bent to be attached to the surface of a part arranged outside the motor main shaft, the damping sleeve is arranged on the outer wall of the motor main shaft, and the damping piece is made of flexible materials and suitable for wrapping the framework to conduct damping on the main shaft when the motor main shaft vibrates. In the working process of the motor, when the motor main shaft vibrates, the framework is used for limiting the motor main shaft and components on the motor main shaft, the vibration sense and noise of the vibration components are weakened through the flexible materials, the structure is simple, and the damping device is matched with any motor to be used for damping.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to a sealing and damping mechanism for a motor spindle and a motor. Background Art

[0002] The motor, commonly known as the "motor", is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. Its main function is to generate a driving torque and serve as a power source for electrical appliances or various machines. During the operation of the motor, its spindle will vibrate. Most existing motors use the method of externally installing a damping mechanism or internally installing a damping system to reduce low-frequency vibration and reduce noise. Among them, the externally installed damping mechanism is mostly directly installed on the motor housing for damping after the motor is installed. This results in the need for the damping mechanism to be connected to the motor installation area as well. Therefore, it is necessary for the damping mechanism to be matched and installed with the motor and the installation area, and the limitation is relatively high.

[0003] Therefore, it is necessary to design a sealing and damping mechanism for a motor spindle and a motor to solve the technical problem that the damping mechanism in the prior art is complex in structure and limited in installation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealing and damping mechanism for a motor spindle and a motor to solve the above technical problems.

[0005] To solve the above technical problems, the utility model provides a sealing and damping mechanism for a motor spindle, including:

[0006] A damping sleeve sleeved outside the motor spindle; wherein

[0007] The damping sleeve includes:

[0008] A skeleton sleeved outside the spindle; and

[0009] A buffer member, which is made of a flexible material and is suitable for covering the skeleton to damp the spindle when the motor spindle vibrates.

[0010] Further, two bearings are arranged on the outer wall of the motor spindle; wherein

[0011] A first gasket is arranged between the two bearings.

[0012] Further, the two bearings are arranged in an up-and-down stacked manner; and

[0013] Circlips are arranged between the upper end face of the upper bearing and the lower end face of the lower bearing and the motor spindle.

[0014] Further, a shaft seal is sleeved on the outer wall of the motor spindle;

[0015] At least three sealing lips are provided on the shaft seal; among them

[0016] A sealing wall is formed between every two adjacent sealing lips and the motor main shaft; and

[0017] Grease is provided in the sealing wall.

[0018] Furthermore, the material of the sealing lip is wear-resistant material.

[0019] Furthermore, a second gasket is provided between the bottom of the shaft seal and the upper end face of the upper bearing.

[0020] Furthermore, the shock-absorbing sleeve is sleeved outside the bearing and the shaft seal; among them

[0021] The inner wall of the shock-absorbing sleeve fits with the outer walls of the shaft seal and the bearing.

[0022] Furthermore, an end cover is sleeved on the outer wall of the motor main shaft; among them

[0023] The end cover is located below the lower bearing; and

[0024] The upper end face of the end cover fits with the lower end face of the lower bearing.

[0025] On the other hand, the present utility model also provides a motor, including:

[0026] A motor main shaft; and a sealing and shock-absorbing mechanism for the motor main shaft as described above.

[0027] The beneficial effect of the present utility model is that by sleeving a shock-absorbing sleeve on the outer wall of the motor main shaft, the shock-absorbing sleeve is composed of a skeleton and a flexible material coated outside the skeleton, bending the skeleton of the shock-absorbing sleeve to fit the surface of the parts arranged outside the motor main shaft. During the operation of the motor, when the motor main shaft vibrates, the skeleton is used to limit the motor main shaft and its upper components, and the flexible material is used to weaken the vibration sensation and noise of the vibrating components. The structure is simple and can be adapted to any motor for shock absorption.

[0028] Other features and advantages of the present utility model will be described in the subsequent description, and some of them will be obvious from the description or understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0029] To make the above objectives, features and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the attached drawings, makes detailed descriptions as follows. Description of the Drawings

[0030] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 is a plan sectional view of the present utility model;

[0032] Figure 2 is a partial structural sectional view of the present utility model.

[0033] In the figure:

[0034] 1, shaft seal; 2, first gasket; 3, shock-absorbing sleeve; 30, buffer member; 31, skeleton; 4, bearing; 5, second gasket; 6, snap ring; 7, motor main shaft; 8, end cover; 9, metal part. Specific embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0036] Most existing motors choose to reduce low-frequency vibration and reduce noise by externally setting a shock-absorbing mechanism or internally setting a shock-absorbing system. Among them, the externally set shock-absorbing mechanism is mostly directly installed on the motor housing for shock absorption after the motor is installed. This results in the need for the shock-absorbing mechanism to be connected to the motor installation area as well. Therefore, it is required that the shock-absorbing mechanism can be matched and installed with the motor and the installation area, and the limitations are relatively high.

[0037] To solve the above technical problems, in at least one embodiment, a motor shock-absorbing mechanism is provided, including: a shock-absorbing sleeve 3 sleeved outside the motor main shaft 7; wherein the shock-absorbing sleeve 3 includes: a skeleton 31 that fits against the outer wall of the motor main shaft 7; and a buffer member, which is made of a flexible material and is adapted to wrap the skeleton 31 to dampen the vibration of the main shaft when the motor main shaft 7 vibrates.

[0038] By sleeving a shock-absorbing sleeve 3 on the outer wall of the motor spindle 7, which is composed of a skeleton 31 and a buffer 30 wrapped outside the skeleton 31, bending the skeleton 31 of the shock-absorbing sleeve 3 to fit the surface of the components arranged outside the motor spindle 7. During the operation of the motor, when the motor spindle 7 vibrates, the skeleton 31 is used to limit the motor spindle 7 and its components thereon, and the buffer 30 made of flexible material is used to weaken the vibration feeling and noise of the vibrating components. The structure is simple and can be adapted to any motor for shock absorption.

[0039] In some embodiments, the material of the skeleton 31 in the shock-absorbing sleeve 3 is a metal material, and the material of the buffer 30 is preferably silicone, which has good shock absorption and sound insulation and noise reduction effects, and the silicone texture is relatively soft. During the vibration process of the motor spindle 7, it can relieve the vibration of the motor spindle 7 and prevent the motor spindle 7 from being damaged due to collision with other components inside the motor caused by vibration.

[0040] In some embodiments, a shaft seal 1 is sleeved on the outer wall of the motor spindle 7. A number of sealing lips are arranged on the inner wall of the shaft seal 1. The number of sealing lips is preferably three. Each sealing lip is in interference fit with the outer wall of the motor spindle 7. Grease is filled in the sealing chamber between every two adjacent sealing lips to ensure that the spindle is fully lubricated, and the grease has good water resistance and anti-corrosion performance, effectively protecting the motor spindle 7. For the material of the sealing lips, polytetrafluoroethylene is preferably used to avoid affecting the sealing performance of the shaft seal 1 due to wear during the high-speed rotation of the motor spindle 7.

[0041] In some embodiments, a first gasket is arranged between the two bearings 4 to separate the upper and lower bearings 4, avoiding the interference of the inner rings of the bearings 4 during use. And a second gasket 5 is arranged between the upper end face of the upper bearing 4 and the lower end face of the shaft seal 1 to separate the shaft seal 1 and the upper bearing 4, so as to prevent the interference between the upper bearing 4 and the shaft seal 1 during use and damage the shaft seal 1.

[0042] In some embodiments, an end cover 8 is sleeved on the outer wall of the motor spindle 7, and the upper end face of the end cover 8 is attached to the lower end face of the lower bearing 4 to hold the bearing 4 and prevent the bearing 4 from coming off.

[0043] In some embodiments, the skeleton 31 is used to wrap each component arranged on the spindle 1, the buffer 30 is used to wrap the skeleton 31, and then the metal part 9 is sleeved outside the skeleton 31, as Figure 2 shown. Compared with directly sleeving the metal part 9 outside each component arranged on the spindle 1 in the prior art, the cooperation of the skeleton 31 and the buffer 30 can reduce vibration noise and maintain sealing during the vibration process of the spindle 1 rotation.

[0044] On the other hand, a motor is also provided, which includes a motor main shaft 7 and the above-described sealing and shock-absorbing mechanism for the motor main shaft.

[0045] In summary, by sleeving a shock-absorbing sleeve on the outer wall of the motor main shaft, the shock-absorbing sleeve is composed of a skeleton and a buffer member coated outside the skeleton. The skeleton of the shock-absorbing sleeve is bent to fit the surface of the parts arranged outside the motor main shaft. During the operation of the motor, when the motor main shaft vibrates, the skeleton is used to limit the motor main shaft and its upper components, and the buffer member made of a flexible material is used to weaken the vibration feeling and noise of the vibrating components. The structure is simple and it can be adapted to any motor for shock absorption.

[0046] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sealing and shock-absorbing mechanism for a motor spindle, characterized in that, Comprising: A shock-absorbing sleeve sleeved outside the motor main shaft; Wherein The shock-absorbing sleeve comprises: A skeleton, sleeved outside the main shaft; And A buffer member, which is made of a flexible material and is adapted to wrap the skeleton to shock-absorb the main shaft when the motor main shaft vibrates.

2. The sealed shock-absorbing mechanism for a motor main shaft according to claim 1, wherein Two bearings are arranged on the outer wall of the motor main shaft; wherein A first gasket is arranged between the two bearings.

3. The sealed shock-absorbing mechanism for a motor main shaft according to claim 2, wherein The two bearings are arranged in an up-and-down stacked manner; and Circlips are arranged between the upper end face of the upper bearing and the lower end face of the lower bearing and the motor main shaft.

4. The sealed shock-absorbing mechanism for a motor main shaft according to claim 3, wherein A shaft seal is sleeved on the outer wall of the motor main shaft; At least three sealing lips are arranged on the shaft seal; wherein A sealing wall body is formed between every two adjacent sealing lips and the motor main shaft; and Grease is arranged in the sealing wall body.

5. The sealed shock-absorbing mechanism for a motor main shaft according to claim 4, wherein The material of the sealing lip is a wear-resistant material.

6. The sealed shock-absorbing mechanism for a motor main shaft according to claim 5, wherein A second gasket is arranged between the bottom of the shaft seal and the upper end face of the upper bearing.

7. The sealed shock-absorbing mechanism for a motor main shaft according to claim 6, wherein The shock-absorbing sleeve is sleeved outside the bearing and the shaft seal; wherein The inner wall of the shock-absorbing sleeve is in contact with the outer walls of the shaft seal and the bearing.

8. The sealed shock-absorbing mechanism for a motor main shaft according to claim 7, wherein An end cover is sleeved on the outer wall of the motor main shaft; wherein The end cover is located below the lower bearing; and The upper end face of the end cover is in contact with the lower end face of the lower bearing.

9. A motor, characterized in that, Comprising: A motor main shaft; And Adopting the sealed shock-absorbing mechanism for a motor main shaft according to any one of claims 1-8.

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