A motor torque output shaft structure

By incorporating reinforcing tubes and reinforcing ribs into the motor torque output shaft structure, and employing ceramic coating and an integrated connecting rod, the problems of fracture and wear caused by stress concentration in existing technologies are solved, thereby improving the strength and service life of the output shaft.

CN224533230UActive Publication Date: 2026-07-21FUAN HUACHUANG ELECTRICAL MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUAN HUACHUANG ELECTRICAL MACHINERY
Filing Date
2025-09-16
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing motor torque output shaft has a simple structural design, which leads to stress concentration, making it prone to breakage and wear, thus affecting the normal operation and service life of the motor.

Method used

A reinforcing tube is fitted onto the outside of the output shaft body, and multiple reinforcing ribs are arranged in a matrix. A connecting groove is provided on the inside. The output shaft body and the connecting rod are an integral structure. The outside is coated with a ceramic coating. The connecting rod is made of 40Cr alloy structural steel.

Benefits of technology

It improves the structural strength and torque resistance of the output shaft, reduces deformation and breakage, extends service life, and enhances torque transmission efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a motor torque output shaft structure, including output shaft body, the output shaft body outside is sleeved and has reinforced pipe, the output shaft body outside is equipped with a plurality of matrix arrangement's reinforcing bars, the reinforced pipe inside is provided with the connecting groove that is matched with reinforcing bar, output shaft body one end is fixedly connected with connecting rod, the connecting rod is away from output shaft body one end and is provided with the limit slot, the reinforced pipe both ends all are provided with the installation slot, output shaft body and connecting rod are integral type structure. Through the reinforced pipe of output shaft body outside sleeve connection, and set up reinforcing bar and connecting groove, make output shaft body and reinforced pipe between form firm connection, effectively improved the structure strength and the torsional rigidity of output shaft, reduced the deformation and the fracture phenomenon of output shaft in the use process, prolonged the service life of output shaft.
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Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor torque output shaft structure. Background Technology

[0002] The motor torque output shaft is a crucial component of a motor, used to transmit the torque generated by the motor to external devices. In practical applications, the output shaft needs to withstand significant torque and load, especially under high-power, high-load conditions, placing higher demands on its structural strength and torque transmission capacity. Existing motor torque output shafts typically employ a single shaft structure with a relatively simple connection design. This leads to stress concentration during torque transmission, causing the output shaft to break and wear after prolonged use, affecting the motor's normal operation and lifespan. Therefore, we propose a new motor torque output shaft structure. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a motor torque output shaft structure. This invention solves the problem that existing motor torque output shafts typically employ a single shaft structure with a simple connection end design, which easily leads to stress concentration during torque transmission. This results in the output shaft being prone to breakage and wear after prolonged use, affecting the normal operation and service life of the motor.

[0004] This utility model discloses a motor torque output shaft structure, including an output shaft body, a reinforcing tube sleeved on the outside of the output shaft body, a plurality of reinforcing ribs arranged in a matrix on the outside of the output shaft body, a connecting groove matching the reinforcing ribs on the inside of the reinforcing tube, one end of the output shaft body being fixedly connected to a connecting rod, a limiting groove being provided at the end of the connecting rod away from the output shaft body, and mounting grooves being provided at both ends of the reinforcing tube, wherein the output shaft body and the connecting rod are an integral structure.

[0005] In the above scheme, both the output shaft body and the connecting rod are made of 40Cr alloy structural steel.

[0006] In the above scheme, the outer side of the connecting rod is provided with a wear-resistant coating, which is a ceramic coating with a thickness of 0.05-0.1mm.

[0007] In the above scheme, the number of reinforcing ribs is no less than four.

[0008] In the above scheme, the cross-sectional width of the connecting rod is greater than the cross-sectional width of the output shaft body.

[0009] In the above scheme, the reinforcing pipe is a 40Cr alloy structural steel pipe.

[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a motor torque output shaft structure. By sleeved with a reinforcing tube on the outside of the output shaft body and setting reinforcing ribs and connecting grooves, a firm connection is formed between the output shaft body and the reinforcing tube, which effectively improves the structural strength and torque resistance of the output shaft, reduces deformation and breakage of the output shaft during use, and extends the service life of the output shaft. The output shaft body and the connecting rod adopt an integrated structure, which enhances the connection strength between the two and avoids loosening or breakage during torque transmission, thereby improving torque transmission efficiency. Attached Figure Description

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0014] In the diagram: 1. Output shaft body; 2. Reinforcing tube; 3. Reinforcing rib; 4. Connecting groove; 5. Mounting groove; 6. Connecting rod; 7. Limiting groove. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0016] like Figure 1-2 As shown, this utility model is a motor torque output shaft structure, including an output shaft body 1, a reinforcing tube 2 sleeved on the outside of the output shaft body 1, and multiple reinforcing ribs 3 arranged in a matrix on the outside of the output shaft body 1. A connecting groove 4 matching the reinforcing ribs 3 is opened on the inside of the reinforcing tube 2, and the reinforcing ribs 3 are inserted into the connecting groove 4. Through the mutual cooperation between the reinforcing ribs 3 and the connecting groove 4, the output shaft body 1 and the reinforcing tube 2 can be stably connected. One end of the output shaft body 1 is fixedly connected to a connecting rod 6. A limiting groove 7 is opened on the end of the connecting rod 6 away from the output shaft body 1. The limiting groove 7 can limit the bearings located at both ends of the motor. Both ends of the reinforcing tube 2 are provided with mounting grooves 5. The output shaft body 1 and the connecting rod 6 are an integral structure.

[0017] Both the output shaft body 1 and the connecting rod 6 are made of 40Cr alloy structural steel. 40Cr alloy structural steel has high strength, hardness and wear resistance, which can meet the requirements of the output shaft when it is subjected to large torque and load, and ensure the structural stability and service life of the output shaft.

[0018] The outer side of the connecting rod 6 is provided with a wear-resistant coating, which is a ceramic coating with a thickness of 0.05-0.1mm. The ceramic coating has excellent wear resistance and high temperature resistance, which can effectively reduce the wear of the connecting rod during the connection with external equipment, improve the service life of the connecting rod, and also enhance its high temperature resistance to adapt to different working environments.

[0019] The number of reinforcing ribs is no less than four. Multiple reinforcing ribs arranged in a matrix can be evenly distributed on the outside of the output shaft body and cooperate with the connecting groove on the inside of the reinforcing tube to further improve the connection strength and stability between the output shaft body and the reinforcing tube, and enhance the overall torque resistance of the output shaft.

[0020] The cross-sectional width of the connecting rod 6 is greater than the cross-sectional width of the output shaft body 1. The larger cross-sectional width of the connecting rod 6 can limit the end of the output shaft body 1.

[0021] The reinforcing pipe 2 is a 40Cr alloy structural steel pipe.

[0022] Specifically, in this utility model, the reinforcing rib 3 is inserted into the connecting groove 4. Through the mutual cooperation between the reinforcing rib 3 and the connecting groove 4, the output shaft body 1 and the reinforcing tube 2 can be stably connected. The 40Cr alloy structural steel has high strength, hardness and wear resistance, which can meet the usage requirements of the output shaft when bearing large torque and load, ensuring the structural stability and service life of the output shaft. The ceramic coating has excellent wear resistance and high temperature resistance, which can effectively reduce the wear of the connecting rod during the connection with external equipment, improve the service life of the connecting rod, and at the same time enhance its high temperature resistance to adapt to different working environments.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A motor torque output shaft structure, comprising an output shaft body (1), characterized in that, A reinforcing tube (2) is sleeved on the outside of the output shaft body (1). Multiple reinforcing ribs (3) are arranged in a matrix on the outside of the output shaft body (1). A connecting groove (4) matching the reinforcing rib (3) is opened on the inside of the reinforcing tube (2). One end of the output shaft body (1) is fixedly connected to the connecting rod (6). A limiting groove (7) is opened on the end of the connecting rod (6) away from the output shaft body (1). Both ends of the reinforcing tube (2) are provided with mounting grooves (5). The output shaft body (1) and the connecting rod (6) are an integral structure.

2. The motor torque output shaft structure according to claim 1, characterized in that, Both the output shaft body (1) and the connecting rod (6) are made of 40Cr alloy structural steel.

3. The motor torque output shaft structure according to claim 1, characterized in that, The outer side of the connecting rod (6) is provided with a wear-resistant coating, which is a ceramic coating with a thickness of 0.05-0.1mm.

4. The motor torque output shaft structure according to claim 1, characterized in that, The number of the reinforcing ribs (3) shall not be less than four.

5. The motor torque output shaft structure according to claim 1, characterized in that, The cross-sectional width of the connecting rod (6) is greater than the cross-sectional width of the output shaft body (1).

6. The motor torque output shaft structure according to claim 1, characterized in that, The reinforcing pipe (2) is a 40Cr alloy structural steel pipe.