Noise reduction gear shaft for aluminum shell motor

Abstract

The utility model provides a noise reduction gear shaft for an aluminum shell motor, which comprises a first bearing, a first gear, a second gear, a second bearing and a shaft from top to bottom, the shaft penetrates through the middle of the gear shaft, and the first bearing and the second bearing are the same; the first gear and the second gear are bevel gears, and tooth profiles of the first gear and the second gear are arc-shaped. The helical gear is used, so that the meshing process is more stable, noise can be effectively reduced, and meanwhile, the noise can be further reduced in the meshing process due to smooth transition of contact points of the arc-shaped tooth profiles; and the meshing area of the bevel gear and the arc-shaped tooth profile is large, so that heat dissipation is facilitated, friction among all parts is reduced, and the service life of the gear shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a noise-reducing gear shaft used on an aluminum shell motor. Background Art

[0002] Gear shafts are key components in motor systems, converting the motor's rotational motion into the desired torque and speed output. However, gear operation generates significant noise and heat, and prolonged exposure to this noise pollution can negatively impact the operator's physical and mental health. Summary of the Invention

[0003] The purpose of the present invention is to address the shortcomings of the prior art and to propose a noise-reducing gear shaft for aluminum-shell motors. To achieve the above purpose, the present invention adopts the following technical solution: a noise-reducing gear shaft for aluminum-shell motors, comprising, from top to bottom, a first bearing, a first gear, a second gear, a second bearing, and a shaft, the shaft running through the middle of the gear shaft, characterized in that: the first gear and the second gear are helical gears; and the tooth profiles of the first gear and the second gear are arc-shaped. Preferably, the teeth of the second gear are arc-shaped, and the second gear as a whole is wide in the middle and narrow at both ends, forming an elliptical spindle shape as a whole. Preferably, the diameter of the first gear is larger than the diameter of the first bearing. Preferably, the diameter of the second gear is smaller than the diameter of the first bearing. Preferably, the first bearing is a deep groove ball bearing, and the second bearing is a cylindrical roller bearing. Preferably, the shaft is a metal cylinder.

[0004] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses the designs of helical gears, circular arc tooth profiles and spindle-shaped gears. On the one hand, the tooth profile of the helical gear is spiral, so that during the meshing process, the number of teeth in contact gradually increases and then gradually decreases. This progressive contact can reduce impact and vibration, thereby reducing noise; on the other hand, the circular arc tooth profile provides smoother contact during the meshing process, reduces the impact and vibration between the tooth surfaces, thereby reducing noise; third, since the second gear is spindle-shaped, the teeth on the gear are circular arc-shaped, which reduces the contact area between the gears, reduces impact and vibration, and thus reduces noise; fourth, the meshing area of ​​the helical gear and the circular arc tooth profile is larger, providing more contact area, which can optimize the heat conduction path, so that heat can be more evenly transferred from the tooth surface to other parts of the gear, thereby improving the overall heat dissipation efficiency, while reducing friction between components and increasing the service life of the gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model.

[0006] Figure 2This is a detailed view of the tooth profile of the first gear of the first embodiment of the present invention.

[0007] Figure 3 This is a schematic structural diagram of the shaft of the first embodiment of the present utility model.

[0008] Figure 4 This is a detailed view of the gear teeth of the second gear of the first embodiment of the present invention.

[0009] Explanation of reference numerals: 100—first bearing; 200—first gear; 300—second gear; 400—second bearing; 500—shaft. DETAILED DESCRIPTION

[0010] In order to enable people skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application, as follows.

[0011] Please refer to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 The present invention provides a noise-reducing gear shaft for aluminum-shell motors. From top to bottom, it comprises a first bearing 100, a first gear 200, a second gear 300, a second bearing 400, and a shaft 500 extending through the center of the gear shaft. The shaft 500 is characterized in that the first and second gears 200 and 300 are helical gears, each having an arc-shaped tooth profile. Helical gears provide a smoother meshing process, effectively reducing noise. The arc-shaped tooth profile further reduces noise during meshing due to the smooth transition of the contact points. Furthermore, the larger meshing area between the helical gears and the arc-shaped tooth profile facilitates heat dissipation, reduces friction between components, and increases the service life of the gear shaft.

[0012] Better, such as Figure 3 As shown, the tooth profile of the first gear 200 is in the shape of an arc. Increasing the radius of the arc can make the contact surface between the gears smoother, reduce the impact force during meshing, and reduce noise.

[0013] Better, such as Figure 4 As shown, the gear teeth of the second gear 300 are arc-shaped, with a wide middle and narrow ends, forming an elliptical spindle shape. This reduces the contact area between gears, reduces the spread of vibration, and thus reduces vibration and noise between gears.

[0014] Better, such as Figure 1As shown, the diameter of the first gear 200 is larger than the diameter of the first bearing 100, while the diameter of the second gear 300 is smaller than the diameter of the first bearing 100. The larger the diameter of the gear, the greater the inertial force generated during its rotation, resulting in different dynamic responses and acceleration performance at different locations on the gear shaft.

[0015] Better, such as Figure 1 As shown, the first bearing 100 is a deep groove ball bearing, and the second bearing 400 is a cylindrical roller bearing. During operation, the balls in the deep groove ball bearing roll on the raceway. The coefficient of friction of this rolling friction is typically much lower than that of sliding friction. This reduced friction also reduces frictional heat and wear generated by the bearing during operation, thereby reducing noise. The cylindrical roller bearing's cylindrical rollers have a larger contact area with the raceway, resulting in a relatively low coefficient of friction, which helps reduce energy loss.

[0016] Better, such as Figure 3 As shown, the shaft 500 is a metal cylindrical shape, which has good thermal conductivity and helps to dissipate heat under high load conditions.

[0017] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A noise reduction gear shaft for an aluminum housing motor, comprising, from top to bottom, a first bearing (100), a first gear (200), a second gear (300), a second bearing (400), and a shaft (500), wherein the shaft (500) runs through the middle of the gear shaft, and is characterized in that: The first gear (200) and the second gear (300) are helical gears; the tooth profiles of the first gear (200) and the second gear (300) are arc-shaped.

2. The noise reduction gear shaft for an aluminum housing motor according to claim 1, characterized in that: The gear teeth of the second gear (300) are in an arc shape, and the second gear (300) is wider in the middle and narrower at both ends, and is in an elliptical spindle shape as a whole.

3. The noise reduction gear shaft for an aluminum housing motor according to claim 1, characterized in that: The diameter of the first gear (200) is greater than the diameter of the first bearing (100).

4. The noise reduction gear shaft for an aluminum housing motor according to claim 1, characterized in that: The diameter of the second gear (300) is smaller than the diameter of the first bearing (100).

5. The noise reduction gear shaft for an aluminum housing motor according to claim 1, characterized in that: The first bearing (100) is a deep groove ball bearing, and the second bearing (400) is a cylindrical roller bearing.

6. The noise reduction gear shaft for an aluminum housing motor according to claim 1, characterized in that: The shaft (500) is cylindrical and made of metal.

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