Motor housing

Abstract

The utility model relates to the technical field of motor manufacturing, in particular to a motor shell which comprises a shell body, a threaded hole is formed in the side wall of the shell body, the threaded hole is communicated with the interior of the shell body, and a convex step used for being connected with other components is arranged at one end of the shell body. The motor shell has the effect of improving the use durability of the motor shell.

Description

Technical Field

[0001] The present application relates to the technical field of motor manufacturing, and in particular to a motor housing. Background Art

[0002] As an important component of the motor, the motor housing not only has the function of protecting the internal components of the motor from the external environment, but also needs to meet certain aesthetic and durability requirements.

[0003] The motor housing in the related art is often made of simple metal materials with a relatively rough surface treatment, which makes the housing easy to rust and corrode during use, seriously affecting the service life and performance stability of the motor. In addition, there are many problems with the threaded hole processing of the traditional motor housing, such as foreign matter remaining in the threaded hole and unsmooth threading, which brings great inconvenience to the assembly and maintenance of the motor. Utility Model Content

[0004] In order to improve the service life of a motor housing, the present application provides a motor housing.

[0005] The motor housing provided in this application adopts the following technical solution:

[0006] A motor housing comprises a housing, a side wall of which is provided with a threaded hole, the threaded hole is communicated with the interior of the housing, and one end of the housing is provided with a convex step for connecting other components.

[0007] By adopting the above technical solution, by opening a threaded hole connected to the inside on the side wall of the housing, an additional fixing and connection point can be provided for the motor housing. The threaded hole can be used for threaded fasteners (such as screws, bolts, etc.) to be inserted to firmly connect the motor housing with other components or structures. The threaded connection can facilitate the installation and disassembly of the motor housing. During the installation process, the motor housing can be quickly fixed by simply screwing the corresponding fastener into the threaded hole. The convex step set at one end of the housing can be used for matching connection with other components. The convex step not only increases the connection area and improves the connection stability, but also makes the connection process more accurate and reliable. The setting of the convex step makes the housing suitable for occasions that require frequent connection and disconnection, such as the connection between the motor and the driver. Through the matching setting of the threaded hole and the convex step, the connection strength and durability of the motor housing are improved, and the convenience of installation and disassembly is also improved, which helps to improve the performance and stability of the entire motor system.

[0008] Furthermore, the number of the threaded holes is at least two and the threaded holes are arranged at intervals along the length direction of the shell.

[0009] By adopting the above technical solution, the provision of multiple threaded holes enables the motor housing to be fixed and supported at different positions, which helps to distribute the load more evenly on the motor housing, thereby reducing the risk of damage caused by excessive force on a single point. By providing threaded holes at different positions, more connection points can be provided, making the connection between the motor housing and other components more stable, and improving the stability and reliability of the motor housing in a working environment with large vibration or impact. When it is necessary to repair or replace the components inside the motor, the motor housing can be disassembled through the threaded holes at different positions, reducing the risk of interference and damage to other components during the disassembly process and improving the efficiency of maintenance and replacement.

[0010] Furthermore, the threaded hole on the side away from the convex step is defined as a first threaded hole, and the threaded hole on the side close to the convex step is defined as a second threaded hole, and the distance between the first threaded hole and the end face of the shell on the side away from the convex step is smaller than the distance between the second threaded hole and the end face of the shell on the side away from the convex step.

[0011] By adopting the above technical solution and setting threaded holes at different positions, the structural strength of the motor housing can be increased, and the stability and durability of the motor housing can be ensured in applications that need to withstand large loads or vibrations. The first threaded hole is closer to the end face away from the convex step. When the motor housing is subjected to forces from this direction, the first threaded hole and the fastener connected thereto are first subjected to these forces, which helps to optimize the force distribution of the motor housing and reduce the risk of damage caused by stress concentration. The second threaded hole close to the side of the convex step is farther away from the convex step, and can provide better support and stability when the motor housing is subjected to vibration or impact.

[0012] Furthermore, a distance between the first threaded hole and the second threaded hole is greater than a distance between the first threaded hole and an end surface of the shell away from the convex step.

[0013] By adopting the above technical solution, a more stable support structure can be formed by increasing the spacing between the first threaded hole and the second threaded hole, so that the motor housing can better resist deformation and displacement when subjected to external impact or vibration, thereby improving the structural stability of the motor housing. The larger threaded hole spacing allows the motor housing to be flexible during installation. According to specific installation requirements and environmental conditions, you can choose to use the first threaded hole, the second threaded hole, or both for fixing so that the motor housing can adapt to more different installation conditions and scenarios. Due to the large spacing between the first threaded hole and the second threaded hole, when two fasteners are used for connection, a more secure connection structure can be formed, which helps to improve the connection reliability between the motor housing and other components and reduce the risk of failure caused by loose connections.

[0014] Furthermore, the threaded hole is processed with back-threading, and there is no foreign matter in the threaded hole and the threading is smooth.

[0015] By adopting the above technical solution, the threaded hole with back-threading treatment has a clearer and more regular thread shape, which helps to ensure that fasteners (such as screws, bolts, etc.) can be smoothly and stably screwed into and fixed in the threaded hole. At the same time, the back-threading treatment can repair the damage and dislocation on the surface of the threaded hole, making the threaded hole more durable. The threaded hole without foreign matter ensures the smoothness and stability during the connection process, and improves the connection reliability between the entire motor housing and other components. Back-threading treatment. The threaded hole with back-threading treatment has better threading smoothness. The threaded hole with smooth threading can also reduce the wear and damage of the fastener during the screwing in and out process, so that the fastener can be screwed in and fixed in the threaded hole faster, thereby extending the service life of the motor housing and fasteners. It not only improves the installation efficiency, but also reduces the labor intensity during the installation process.

[0016] Furthermore, the outer surface of the shell has a spray-coated coating, and the coating surface is smooth and has no obvious rust, cracks or deformation.

[0017] By adopting the above technical solution, the surface of the plastic spray coating is smooth, which can improve the appearance quality of the motor housing, and also help reduce friction and wear, reduce the noise and vibration of the motor during operation, and improve the overall work efficiency. Plastic spray coatings usually have good insulation properties, which help reduce failures and safety hazards caused by electrical problems during motor operation. In high-voltage or high-frequency working environments, the insulation performance of the coating is particularly important. Since the plastic spray coating can resist adverse factors such as wear and electrical shock, it can effectively extend the service life of the motor housing. Not only does it reduce the frequency of replacement and maintenance, it also reduces the maintenance cost of the entire equipment. In addition, the smooth, rust-free, and crack-free coating makes the motor housing more beautiful, which helps to enhance the overall image and brand value of the equipment, and also helps to attract users' attention and improve market competitiveness.

[0018] Furthermore, the coating is corrosion-resistant.

[0019] By adopting the above technical solutions, the corrosion-resistant coating can effectively resist the erosion of moisture, chemicals and other corrosive media, thereby extending the service life of the motor housing, reducing damage and replacement frequency caused by corrosion, and reducing maintenance costs. Whether in harsh environments such as moisture, acid, alkali, salt spray, or in normal industrial environments, the corrosion-resistant coating can maintain good performance, ensure the stable operation of the motor housing, and improve the adaptability of the motor housing to various environments. The corrosion-resistant coating not only protects the surface of the motor housing, but also effectively prevents corrosive media from penetrating into the motor housing, thereby protecting the internal structure and components from corrosion, and helping to maintain the overall performance and reliability of the motor. Since the corrosion-resistant coating can reduce damage and failures caused by corrosion, the frequency of repairs and replacements is reduced, which not only reduces maintenance costs, but also improves the availability and production efficiency of the equipment. The corrosion-resistant coating ensures that the motor housing can still maintain a good appearance and performance during long-term use, thereby improving the user experience.

[0020] Furthermore, the inner wall of the shell is smoothed and the inner surface of the shell is free of rust.

[0021] By adopting the above technical solution, the smooth inner wall surface can ensure the integrity of the internal structure of the motor, reduce the safety hazards caused by corrosion, and also help reduce the damage of parts caused by friction and wear, and prevent safety problems such as short circuit and fire caused by the accumulation of impurities. The rust-free inner surface can prevent the accumulation of impurities and particles, keep the inside of the motor clean, prevent motor failures caused by impurities, improve the running stability and reliability of the motor, reduce the damage of the internal parts of the motor caused by corrosion, and thus extend the service life of the motor.

[0022] Furthermore, the shell is made of a precision drawn steel tube.

[0023] By adopting the above technical solution, the precision-drawn steel pipe is a steel pipe made by stretching and finishing, with high precision and high finish. Its diameter and wall thickness can be precisely controlled, and the surface roughness reaches a low level, ensuring the overall precision and quality of the motor housing. The precision-drawn steel pipe has excellent mechanical properties, such as high strength and high toughness, so that the motor housing can withstand greater pressure and impact, ensuring the stable operation of the motor in complex environments. At the same time, the good sealing performance of the precision-drawn steel pipe can prevent the penetration of external substances such as water vapor and dust, and can protect the internal structure of the motor and maintain the motor operating environment.

[0024] Furthermore, the outer dimensions of the shell are infinitely close to the preset standard dimensions.

[0025] By adopting the above technical solution, the size of the motor housing is highly consistent with the preset standard size, so that the housing has a higher degree of matching with other parts during the assembly process, and the assembly process is smoother, thereby improving assembly efficiency. Due to the high consistency of size, assembly errors caused by size mismatch are reduced, the error rate is reduced, and product quality and reliability are guaranteed. The highly standardized size makes the motor housings of different batches or different production lines more interchangeable and easy to repair and replace. Through precise size control, material waste and processing errors in the production process can be reduced, thereby reducing production costs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The use of precision drawn steel pipe as the material of the motor housing ensures that the motor housing has high strength, high toughness and good sealing performance. The precision drawn steel pipe not only improves the mechanical properties of the motor housing, enabling it to withstand greater pressure and impact, but also prevents the penetration of external substances through its excellent sealing performance, significantly enhancing the durability of the motor housing;

[0028] 2. The outer dimensions of the motor housing are infinitely close to the preset standard dimensions, which makes the motor housing more compatible with other components during assembly, making the assembly process smoother. The high consistency of dimensions reduces the assembly error rate and potential problems caused by size mismatch, thereby improving the assembly quality and overall durability of the motor housing.

[0029] 3. The inner wall of the motor housing is smooth and free of rust, which helps to reduce component damage caused by friction and wear, prolongs the service life of the motor housing, and further enhances its durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a longitudinal cross-sectional schematic diagram of a motor housing according to an embodiment of the present application.

[0031] Figure 2 yes Figure 1 A magnified schematic diagram of the structure of the middle A convex step.

[0032] Explanation of the accompanying drawings: 1. Shell; 11. Outer wall; 12. Inner wall; 13. First end face; 14. Second end face; 15. Third end face; 2. Threaded hole; 21. First threaded hole; 22. Second threaded hole; 3. Convex step. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1 And embodiments, the present application is further described in detail.

[0034] The present application discloses a motor housing, which aims to significantly improve the durability of the motor housing through a series of structural, material and process optimization measures. This embodiment describes in detail the specific implementation methods of these optimization measures. The words such as "upper" and "lower" used to express positional relationships in this embodiment are all referred to in the attached Figure 1 The position in is determined.

[0035] like Figure 1 As shown, the motor housing includes a housing 1, and a threaded hole 2 is provided on the housing 1 in this embodiment, and the threaded hole 2 vertically penetrates the outer wall 11 and the inner wall 12 of the housing 1. In this embodiment, the number of threaded holes 2 is preferably two, and the two threaded holes 2 are spaced apart along the cylindrical generatrix direction of the housing 1. The two end faces of the housing 1 are defined as the first end face 13 and the second end face 14, respectively, and the threaded hole 2 close to the first end face 13 corresponds to the first threaded hole 21, and the threaded hole 2 close to the second end face 14 corresponds to the second threaded hole 22.

[0036] Reference Figure 2 The outer wall 11 of the housing 1 at the second end face 14 is provided with an annular groove, and the annular groove and the second end face 14 form a convex step 3 for connecting other components, and the end face of the convex step 3 is the second end face 14. In addition, the end face at the adjacent position of the convex step 3 is defined as the third end face 15.

[0037] In this embodiment, the shell 1 is preferably a cylindrical 10# (ST12, Q195) precision drawn steel pipe. The length from the first end face 13 to the second end face 14 of the shell 1 is 126.5±0.05, and the length from the first end face 13 to the second end face 14 of the shell 1 is 123.5 (an error of 0-0.10 is allowed). The outer diameter of the shell 1 is φ82, and the inner diameter is φ72. The parallelism between the inner wall 12 and the outer wall 11 of the shell 1 is 0.02, and the verticality between the third end face 15 and the convex step 3 is 0.04. Since the precision drawn steel pipe has fine process requirements, the concentricity of the shell 1 can be controlled at 0.03, and the cylindricity of the shell 1 is controlled at 0.03.

[0038] Precision drawn steel tubes are known for their high strength and toughness, and can withstand various stresses and impacts generated during the operation of the motor. At the same time, the excellent sealing performance of precision drawn steel tubes also provides additional protection for the motor, preventing the intrusion of external harmful substances such as water vapor and dust.

[0039] The appearance quality of the motor housing is strictly controlled. In this embodiment, the outer wall 11 of the housing 1 has a spray-coated coating, the coating thickness is accurately controlled between 0.01 and 0.015 mm, and the coating color is silver-gray. The surface of the housing 1 is smooth, without rust, cracks or deformation, and the processing burr is controlled below 0.03 mm.

[0040] The coating of the outer wall 11 of the housing 1 is corrosion-resistant. The housing 1 has passed a 72-hour salt spray test and has a surface quality of grade 7, so that the motor housing can maintain its original state for a long time under changing environmental conditions and will not be easily damaged by corrosion, thereby significantly extending the service life of the motor housing.

[0041] The inner wall 12 of the housing 1 is smoothed so that the inner wall 12 of the housing 1 is free of rust, ensuring the cleanliness and safety of the motor. It reduces the friction and wear of the motor's internal parts during operation, reduces energy consumption and noise, and effectively prevents the adhesion and accumulation of impurities and particles. It not only maintains the cleanliness and hygiene of the motor, but also prevents potential safety problems such as short circuits and fires caused by impurities.

[0042] The threaded hole 2 in this embodiment is processed with back threading to ensure the clarity and regularity of the thread, and also enables the fastener to be screwed in more smoothly and stably. There is no foreign matter in the threaded hole 2, and the threading process is smooth, which provides convenience for the assembly and maintenance of the motor.

[0043] In this embodiment, the process flow of the motor housing accurately controls the external dimensions, making them infinitely close to the preset standard dimensions, ensuring that the housing 1 can achieve a very high degree of matching when assembled with other components, simplifying the assembly process, improving production efficiency, and reducing assembly errors and potential failures caused by size mismatch.

[0044] The implementation principle of a motor housing in the embodiment of the present application is as follows: 10# (ST12, Q195) fine-drawn steel pipe is selected as the material of the motor housing to meet the requirements of the strength and toughness of the housing material 1 during the operation of the motor, and also provide additional protection to prevent the invasion of external harmful substances. In terms of the structure of the motor housing, a threaded hole 2 is vertically penetrated through the outer wall 11 and the inner wall 12 of the housing 1 for connecting or fixing other components. The two threaded holes 2 are spaced apart along the direction of the cylindrical generatrix to provide a stable connection point, while facilitating assembly and maintenance. An annular groove is opened on the outer wall 11 at the position of the second end face 14 of the housing 1 to form a convex step 3 for connecting other components, increasing the area of ​​the connection surface, and improving the connection stability and reliability. The motor housing is precisely controlled in size, such as housing length, inner and outer diameters, concentricity, cylindricity, etc., to ensure that the motor housing can achieve a very high degree of matching when assembled with other components, reducing assembly errors and potential failures. The outer wall 11 of the housing 1 is sprayed to form a corrosion-resistant coating to increase the service life of the motor housing under variable environmental conditions. Smooth the inner wall 12 of the housing 1 to ensure the cleanliness and safety of the motor, reduce friction and wear, and prevent impurities from adhering and accumulating. Perform back-threading on the threaded hole 2 to ensure the clarity and regularity of the thread, so that the fastener can be screwed in more smoothly and stably, providing convenience for the assembly and maintenance of the motor. Strictly control the appearance quality, coating thickness, surface finish, processing burrs, etc. of the motor housing to ensure that the motor housing can meet the design requirements and usage needs.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

[0046] For those skilled in the art, various modifications and changes can be made to the present invention without departing from the principles and spirit of the present invention. For example, the thickness, color, and material composition of the coating can be adjusted to further optimize the performance of the motor housing. Therefore, any equivalent changes or modifications made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the present invention.

[0047] In the description of this embodiment, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0048] Since the embodiments disclosed in this application can be arranged in different directions, the terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

Claims

1. A motor housing, characterized in that: It comprises a shell (1), a threaded hole (2) is provided on the side wall of the shell (1), the threaded hole (2) is communicated with the interior of the shell (1), and a convex step (3) is provided at one end of the shell (1).

2. The motor housing according to claim 1, characterized in that: The number of the threaded holes (2) is at least two, and the threaded holes (2) are arranged at intervals along the length direction of the shell (1).

3. The motor housing according to claim 2, characterized in that: The threaded hole (2) on the side away from the convex step (3) is defined as a first threaded hole (21), and the threaded hole (2) on the side close to the convex step (3) is defined as a second threaded hole (22), and the distance between the first threaded hole (21) and the end surface of the shell (1) on the side away from the convex step (3) is smaller than the distance between the second threaded hole (22) and the end surface of the shell (1) on the side away from the convex step (3).

4. The motor housing according to claim 3, characterized in that: The distance between the first threaded hole (21) and the second threaded hole (22) is greater than the distance between the first threaded hole (21) and an end surface of the housing (1) away from the convex step (3).

5. The motor housing according to claim 1, characterized in that: The threaded hole (2) is subjected to a back threading treatment.

6. The motor housing according to claim 1, characterized in that: The outer wall (11) of the housing (1) has a coating that has been subjected to plastic spraying.

7. The motor housing according to claim 1, characterized in that: The material of the shell (1) is a precision drawn steel tube.

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