A two-stage reduction transmission mechanism for electric motors

Abstract

This utility model provides a two-stage reduction transmission mechanism for an electric motor, belonging to the field of electric motor reduction transmission technology. It includes an electric motor, a first reduction structure comprising a first synchronous pulley, a second synchronous pulley below the first synchronous pulley, and a synchronous belt between the first and second synchronous pulleys; and a second reduction structure comprising a gearbox cover fixedly mounted on one side of the bottom of the electric motor, a rotating rod rotatably connected to the gearbox cover on the second synchronous pulley, a helical gear rotatably mounted on the rotating rod inside the gearbox cover, and an output shaft rotatably connected between the inner walls of the gearbox cover, with a helical gear rotatably meshing with the first helical gear on the output shaft. This utility model, through the combination of a first-stage and a second-stage reduction structure, achieves a high reduction ratio while simultaneously possessing a compact structure, high efficiency, low noise, and low maintenance cost for an electric motor reduction transmission system, suitable for various industrial equipment, automated machinery, and electric vehicles.

Description

Technical Field

[0001] This utility model provides a two-stage reduction transmission mechanism for an electric motor, belonging to the field of electric motor reduction transmission technology. Background Technology

[0002] Electric motors have high output speeds, which makes it difficult to meet the low-speed, high-torque requirements when directly used for terminal loads. Therefore, a speed reduction mechanism is required.

[0003] In existing reduction systems, single-stage reduction structures struggle to achieve high reduction ratios, while multi-stage reducers are prone to being bulky, noisy, inefficient, and difficult to maintain. There is an urgent need for a motor reduction transmission system that ensures a high reduction ratio while also featuring a compact structure, high efficiency, low noise, and low maintenance costs, suitable for various industrial equipment, automated machinery, and electric vehicles.

[0004] Based on this, the present invention provides a two-stage reduction transmission mechanism for an electric motor. Utility Model Content

[0005] The technical problem solved by this utility model is that single-stage reduction structures are difficult to achieve high reduction ratios, while multi-stage reducers are prone to being bulky, noisy, having low transmission efficiency, and being difficult to maintain.

[0006] To solve the technical problem, the technical solution provided by this utility model is as follows: a two-stage reduction transmission mechanism for an electric motor, including an electric motor and a first reduction structure. The first reduction structure includes a first synchronous pulley fixedly connected to the output end of the electric motor, a second synchronous pulley is provided below the first synchronous pulley, and a synchronous belt is provided between the first synchronous pulley and the second synchronous pulley.

[0007] The second reduction structure includes a gearbox cover fixedly installed on one side of the bottom of the motor. The second synchronous pulley is provided with a rotating rod that is rotatably connected to the gearbox cover. The rotating rod is provided with a helical gear placed inside the gearbox cover. An output shaft is rotatably connected between the inner sidewalls of the gearbox cover. The output shaft is provided with a helical gear that meshes with the helical gear.

[0008] Furthermore, a mounting bracket is provided on the other side of the bottom of the motor, and the other end of the output shaft extends out of the gearbox cover and is rotatably connected to the mounting bracket.

[0009] Furthermore, the gearbox cover is provided with a bearing support that mates with the output shaft.

[0010] Furthermore, both the first and second synchronous pulleys are made of aluminum.

[0011] Furthermore, the synchronous pulley one and synchronous pulley two are provided with synchronous pulley covers mounted on the motor.

[0012] The beneficial effects of this utility model are:

[0013] By combining a first-stage reduction structure with a second-stage reduction structure, the overall structure is compact and the modular design is suitable for applications with limited space. While ensuring a high reduction ratio, it also features a compact structure, high efficiency, low noise, and low maintenance costs, making it suitable for various industrial equipment, automated machinery, and electric vehicles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a two-stage reduction transmission mechanism for an electric motor according to this utility model. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of a two-stage reduction transmission mechanism for an electric motor according to this utility model. Figure 2 .

[0016] Figure 3 This is a plan view of a two-stage reduction transmission mechanism for an electric motor according to the present invention. Figure 1 .

[0017] Figure 4 This is a plan view of a two-stage reduction transmission mechanism for an electric motor according to the present invention. Figure 2 .

[0018] 1. Electric motor; 2. Synchronous belt; 3. Synchronous pulley one; 4. Synchronous pulley cover; 5. Output shaft; 6. Gearbox cover; 7. Helical gear one; 8. Bearing support; 9. Mounting bracket; 10. Synchronous pulley two; 11. Helical gear two. Detailed Implementation

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0020] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] According to the appendix Figure 1 , 3 As shown: This utility model provides a two-stage reduction transmission mechanism for an electric motor: including an electric motor 1, characterized in that: it also includes a first reduction structure, the first reduction structure including a first synchronous pulley 3 fixedly connected to the output end of the electric motor 1, a second synchronous pulley 10 provided below the first synchronous pulley 3, and a synchronous belt 2 provided between the first synchronous pulley 3 and the second synchronous pulley 10, both the first synchronous pulley 3 and the second synchronous pulley 10 are made of aluminum, and the outside of the first synchronous pulley 3 and the second synchronous pulley 10 is provided with a synchronous pulley cover 4 installed on the electric motor 1. Specifically, synchronous belt transmission is used, which has low noise and high transmission efficiency; the synchronous pulley is made of aluminum, which is lightweight and has low transmission loss; the synchronous pulley cover 4 is used to prevent interference from foreign objects. When the electric motor 1 is started, it drives the first synchronous pulley 3 to rotate, and with the cooperation of the synchronous belt 2, it drives the second synchronous pulley 10 to rotate.

[0023] As per the instruction manual Figure 1 , 2 As shown in Figure 4: The second reduction structure includes a gearbox cover 6 fixedly mounted on one side of the bottom of the motor 1. A rotating rod 1, rotatably connected to the gearbox cover 6, is mounted on the second synchronous pulley 10. A helical gear 7, placed inside the gearbox cover 6, is mounted on the rotating rod 1. An output shaft 5 is rotatably connected between the inner walls of the gearbox cover 6. A helical gear 11, meshing with the helical gear 7, is mounted on the output shaft 5. A mounting bracket 9 is located on the other side of the bottom of the motor 1. The other end of the output shaft 5 extends through the gearbox cover 6 and is rotatably connected to the mounting bracket 9. The gearbox cover 6 has a bearing support 8 that cooperates with the output shaft 5 to ensure effective rotation of the output shaft 5. The gearbox cover 6 uses a fully enclosed oil bath gearbox, ensuring good lubrication, smooth operation, and low maintenance costs. Specifically, the rotation of the second synchronous pulley 10 drives the rotating rod 1 to rotate, which in turn drives the helical gear 7 to rotate. Under the meshing connection between the helical gear 7 and the helical gear 11, the helical gear 11 is further driven to rotate, which in turn drives the output shaft 5 to rotate.

[0024] This utility model has the following significant advantages: compact structure and flexible layout: the two-stage combination of synchronous belt and helical gear effectively saves installation space; high transmission efficiency: the overall efficiency is far superior to the traditional worm gear structure; low noise: the synchronous belt and helical gear meshing are both relatively quiet, suitable for noise-sensitive occasions; long service life and low maintenance cost: aluminum wheel reduces wear and oil bath lubrication ensures stability; high safety: the synchronous pulley protective shell and the fully enclosed gear oil tank can prevent interference from foreign objects; it is especially suitable for electric vehicle transmission systems with limited space and requiring high reduction ratios and high-efficiency output.

[0025] Its compact overall structure and modular design make it suitable for applications with limited space.

[0026] This structure is particularly suitable for various electric vehicles such as electric bicycles, electric motorcycles, electric tricycles, electric logistics vehicles, and electric sightseeing vehicles, significantly improving the energy efficiency and durability of the drive system. Its modular design is also suitable for low-power drive scenarios in new energy urban transportation vehicles and light electric vehicles.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A two-stage reduction transmission mechanism for an electric motor, comprising an electric motor (1), characterized in that: It also includes a first reduction structure, which includes a first synchronous pulley (3) fixedly connected to the output end of the motor (1), a second synchronous pulley (10) is provided below the first synchronous pulley (3), and a synchronous belt (2) is provided between the first synchronous pulley (3) and the second synchronous pulley (10); The second reduction structure includes a gearbox cover (6) fixedly installed on one side of the bottom of the motor (1). The synchronous pulley (10) is provided with a rotating rod that is rotatably connected to the gearbox cover (6). The rotating rod is provided with a helical gear (7) placed inside the gearbox cover (6). An output shaft (5) is rotatably connected between the inner sidewalls of the gearbox cover (6). The output shaft (5) is provided with a helical gear (11) that meshes with the helical gear (7).

2. The two-stage reduction transmission mechanism for an electric motor according to claim 1, characterized in that: The motor (1) has a mounting bracket (9) on the other side of its bottom, and the other end of the output shaft (5) passes through the gearbox cover (6) and is rotatably connected to the mounting bracket (9).

3. The two-stage reduction transmission mechanism for an electric motor according to claim 1, characterized in that: The gearbox cover (6) is provided with a bearing support (8) that cooperates with the output shaft (5).

4. The two-stage reduction transmission mechanism for an electric motor according to claim 1, characterized in that: Both the first synchronous pulley (3) and the second synchronous pulley (10) are made of aluminum.

5. The two-stage reduction transmission mechanism for an electric motor according to claim 1, characterized in that: Synchronous pulley one (3) and synchronous pulley two (10) are provided with synchronous pulley covers (4) installed on the motor (1).

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