Ultrathin motor capable of improving stability of rear end cover

Abstract

The utility model discloses an ultrathin motor capable of improving the stability of a rear end cover, which comprises a motor shaft, the rear end cover, a rear bearing, a wave pad and a shaft, the bearing chamber part of the rear end cover is directly opened, and the rear bearing is positioned in the bearing chamber of the rear end cover; an inner hole of the rear bearing and the shaft outer diameter of the motor shaft are subjected to close-fitting treatment so as to enhance the bonding strength of the bearings and the shaft, and a gasket is additionally arranged in front of the rear bearing and used for buffering and effectively dispersing axial force generated by compression of a wave pad so as to protect a bearing bead of the rear bearing on the right side from being affected; the position of the wave pad is adjusted to be located between the shaft of the motor shaft and the newly-added gasket, so that direct influence of compression force of the wave pad on the rear end cover is isolated, and it is ensured that the rear end cover only serves as a retainer and does not bear extra acting force. Through the innovative structural design of the rear end cover of the motor, the rear end cover is particularly suitable for a 60 # ultrathin motor, and the overall performance and reliability of the motor are remarkably improved by reducing the deformation risk of the rear end cover.

Description

Technical Field

[0001] The utility model discloses an ultra-thin motor capable of improving the stability of a rear end cover, and is particularly designed for a 60# ultra-thin motor, belonging to the technical field of motors. Background Art

[0002] In the prior art, Figure 1 As shown in the figure, the 60# ultra-thin motor is widely used in fields with strict requirements on installation space due to its compact design. However, due to the thin design of the rear cover, especially the thickness of the bottom of the bearing chamber is only 0.4mm, during the motor assembly process, the axial force generated by the compression of the wave pad can easily cause the rear cover to deform, bulge and become uneven, thus affecting the normal operation of the motor and even causing it to jam. Figure 1 These problems not only reduce the reliability and service life of the product, but also increase the difficulty of assembly and manufacturing costs, limiting the market competitiveness of the product. Utility Model Content

[0003] To solve the above problems, this utility model proposes an innovative motor rear end cover structure design, which is particularly suitable for 60# ultra-thin motors. By reducing the risk of rear end cover deformation, the overall performance and reliability of the motor are significantly improved. This is achieved through the following technical solutions:

[0004] An ultra-thin motor capable of improving the stability of a rear end cover comprises a motor shaft, a rear end cover, a rear bearing, a wave washer and a shaft.

[0005] a. The bearing chamber portion of the rear end cover is directly opened to reduce the risk of stress concentration and deformation due to insufficient material thickness, and the rear bearing is located in the bearing chamber of the rear end cover;

[0006] b. The inner hole of the rear bearing and the outer diameter of the motor shaft are tightly fitted to enhance the bonding strength between the bearing and the shaft, ensuring that the bearing can be stably maintained in the predetermined position during wave pad compression and motor operation, reducing dependence on the rear end cover and stress transmission;

[0007] c. A gasket is added in front of the rear bearing to cushion and effectively disperse the axial force generated by the compression of the wave pad, thereby protecting the bearing ball of the right rear bearing from being affected;

[0008] d. Adjust the position of the wave washer so that it is located between the shaft of the motor and the newly added gasket to isolate the direct impact of the wave washer's compression force on the rear end cover. Ensure that the rear end cover only exists as a retaining frame and does not bear additional forces.

[0009] The above-mentioned tight fitting process is achieved through interference fit to ensure a tight connection between the rear bearing and the motor shaft.

[0010] The beneficial effects of the utility model are:

[0011] 1. Improve product reliability: By optimizing the rear end cover structure and bearing assembly method, the risk of rear end cover deformation and bulging is significantly reduced, and the overall stability and operational reliability of the motor are improved.

[0012] 2. Improve assembly efficiency: Simplified structure and clear assembly process reduce assembly difficulty and improve production efficiency.

[0013] 3. Save production time: Reduce rework and repair time caused by deformation of the rear end cover, and shorten the product cycle from production to market.

[0014] 4. Reduce manufacturing costs: By reducing scrap rates and improving production efficiency, manufacturing costs are effectively reduced and the market competitiveness of products is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram of the structure of a conventional 60mm ultra-thin motor;

[0016] Figure 2 This is a structural diagram of a motor of the present utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0018] like Figure 2 As shown, an ultra-thin motor capable of improving the stability of the rear end cover includes a motor shaft 1, a rear end cover 2, a rear bearing 3, a wave washer 4 and a shaft 6, including:

[0019] a. The bearing chamber portion of the rear end cover 2 is designed to be straight-through, ie, directly through the bearing chamber portion of the rear end cover ( Figure 2 The straight-through bearing chamber design reduces the thickness restriction on the bottom of the rear end cover bearing chamber, thereby improving the overall structural stability of the rear end cover 2. The rear bearing 3 is located in the bearing chamber of the rear end cover 2. The rear bearing 3 and the motor shaft 1 can be directly seen from the rear end of the motor.

[0020] b. A tight fit is adopted between the inner hole of the rear bearing 3 and the outer diameter of the motor shaft 1 to enhance the bonding strength between the bearing and the shaft. This ensures that the bearing can stably maintain the predetermined position during the compression of the wave pad 4 and the operation of the motor, reducing dependence on the rear end cover 3 and stress transmission. The above-mentioned tight fit is achieved through an interference fit to ensure a tight connection between the rear bearing and the motor shaft.

[0021] c. A gasket 5 is provided in front of the rear bearing to cushion and effectively disperse the axial force generated by the compression of the wave pad 4 to protect the bearing ball of the right rear bearing 3 from being affected;

[0022] d. Adjust the position of wave washer 4 so that it is located between shaft 6 of motor shaft 1 and the newly added gasket 5. This will isolate the compression force of wave washer 4 from directly affecting the rear end cover 2 and ensure that the rear end cover 2 only serves as a retaining frame and is not subject to additional forces.

[0023] The utility model has the following design features:

[0024] Optimization of the rear end cover bearing chamber: The traditional closed rear bearing chamber design is changed to a straight-through type, that is, the bearing chamber part of the rear end cover is directly opened up to reduce the stress concentration and deformation risk caused by insufficient material thickness.

[0025] Tight-fit bearing and shaft design: The rear bearing and motor shaft are tightly fitted to enhance the bonding strength between the bearing and the shaft, ensuring that the bearing can stably remain in the predetermined position during wave pad compression and motor operation, reducing dependence on the rear end cover and stress transmission.

[0026] Additional gasket design: A special gasket is added in front of the rear bearing. This gasket not only plays a buffering role, but also effectively disperses the axial force generated by the compression of the wave pad, further protecting the rear end cover from deformation.

[0027] Wave washer position adjustment: The wave washer has been repositioned from its traditional location between the rear end cover and bearing to between the shaft and the newly added spacer. This adjustment effectively isolates the direct impact of the wave washer's compression force on the rear end cover, ensuring that the rear end cover only serves as a retainer and is not subject to additional forces.

[0028] 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. An ultra-thin motor capable of improving the stability of the rear end cover, comprising a motor shaft, a rear end cover, a rear bearing, a wave washer, and a shaft, characterized in that: a. The bearing chamber portion of the rear end cover is directly opened to reduce the risk of stress concentration and deformation due to insufficient material thickness, and the rear bearing is located in the bearing chamber of the rear end cover; b. The inner hole of the rear bearing and the outer diameter of the motor shaft are tightly fitted to enhance the bonding strength between the bearing and the shaft, ensuring that the bearing can be stably maintained in the predetermined position during wave pad compression and motor operation, reducing dependence on the rear end cover and stress transmission; c. A gasket is added in front of the rear bearing to cushion and effectively disperse the axial force generated by the compression of the wave pad, thereby protecting the bearing ball of the right rear bearing from being affected; d. Adjust the position of the wave washer so that it is located between the shaft of the motor and the newly added gasket to isolate the direct impact of the wave washer's compression force on the rear end cover. Ensure that the rear end cover only exists as a retaining frame and does not bear additional forces.

2. The ultra-thin motor according to claim 1, characterized in that: The tight fitting process is achieved through interference fit to ensure a tight connection between the rear bearing and the motor shaft.

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