Riveting structure of brushless direct current motor

Abstract

The utility model relates to a riveting structure of a brushless direct current motor, which comprises a motor shell, a motor end cover and a rotating shaft, and the rotating shaft penetrates through the motor end cover and is connected with the motor shell. The motor shell is of a cylindrical structure with one end open, the edge of the open end of the motor shell extends outwards to be connected with an extension edge, a plurality of upper positioning grooves are formed in the edge of the extension edge at equal intervals, a plurality of lower positioning grooves are formed in the edge of the motor end cover at equal intervals, the upper positioning grooves correspond to the lower positioning grooves, and a plurality of fixing buckles are further arranged on the edge of the motor end cover. And the fixing buckles are buckled and connected with the edges of the extension edges. The riveting device has the characteristics of simple structure, simplicity, convenience and high efficiency in operation and stability and reliability after riveting, can effectively replace the existing plastic packaging process, and improves the working environment of operators. Meanwhile, in combination with automatic assembly line work, the working efficiency can be effectively improved, the scrapping loss easily occurring in the plastic packaging process can be reduced, and the utilization rate of materials is improved.

Description

Technical Field

[0001] This utility model relates to a riveting structure for a brushless DC motor, belonging to the technical field of mechanical automation. Background Technology

[0002] An electric motor, commonly known as a motor, is a device that converts electrical energy into mechanical energy. An electric motor mainly consists of a stator and a rotor. It starts rotating by applying current to a magnetic field, causing the magnetic field to exert a force on the current. Electric motors are classified into DC motors and AC motors based on their power source. DC motors are further divided into brushless motors and brushed motors. Brushed motors generate rotational power by continuously switching the direction of the current, while brushless motors generate power by sensing the position of the permanent magnet poles and switching the direction of the current in the stator coils accordingly.

[0003] Currently, most brushless DC motors are packaged using plastic encapsulation. However, plastic encapsulation raises environmental and employee health concerns, and also presents the issue of disposal costs due to mis-encapsulation or defective products. Furthermore, current plastic encapsulation processes are complex and lack flexibility, resulting in relatively low levels of automation. Additionally, existing plastic encapsulation structures are prone to safety hazards such as end cap detachment under stress. However, with increasing market demand, plastic encapsulation clearly cannot meet the diverse needs of customers. Therefore, there is an urgent need for a highly automated and environmentally friendly brushless DC motor housing riveting structure. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the problems and shortcomings of existing technologies, the present invention aims to provide a riveting structure for a brushless DC motor. By improving the motor housing and end cap, and employing a riveting mechanism, precise positioning and riveting of the motor housing and end cap can be achieved. This improves the working environment for operators, reduces waste caused by accidental sealing, and increases the reuse rate of materials. This solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a motor housing, a motor end cover, and a rotating shaft. The rotating shaft passes through the motor end cover and connects to the motor housing. The motor housing is a cylindrical structure with one open end. The open end of the motor housing extends outward to connect to an extension side. Multiple upper positioning grooves are equally spaced at the edge of the extension side. Multiple lower positioning grooves are equally spaced at the edge of the motor end cover, and the upper positioning grooves correspond to the lower positioning grooves. Multiple fixing buckles are also provided at the edge of the motor end cover to fasten the fixing buckles to the edge of the extension side.

[0007] Preferably, the open end of the motor housing has an upward-facing foolproof positioning groove. A foolproof structure is a constraint to prevent and correct misbehavior, designed to ensure safety and efficiency by avoiding operational errors. It is designed so that operators can complete the operation correctly without requiring excessive attention or specialized knowledge, thereby reducing human error. Therefore, the designed foolproof positioning groove ensures accurate positioning when the motor housing and motor end cover are riveted, reducing the complexity of the operation for the operator.

[0008] Preferably, a foolproof fixing post is further provided above one end face of the motor end cover, and the foolproof fixing post engages with the foolproof positioning groove. A raised foolproof fixing post is provided above one end face of the motor end cover, and it engages with the foolproof positioning groove on the motor housing. This accurately positions the riveting of the motor housing and the motor cover plate, ensuring accurate positioning of the upper and lower positioning grooves, and the upper and lower protruding plates, further reducing operator errors and significantly improving overall automation performance.

[0009] Preferably, the extended edge also includes multiple equally spaced upward-extending convex plates, which correspond to multiple equally spaced outward-extending downward-extending convex plates at the edge of the motor end cover. Multiple upward-extending convex plates are connected at the edge of the extended edge, corresponding to multiple downward-extending convex plates connected at the edge of the motor end cover. During use, when the upper and lower positioning slots correspond, the upper and lower convex plates can further enhance the precise positioning of the motor housing and the motor end cover. Additionally, fixing bolts can be used simultaneously to strengthen the stability of the connection between the motor cover and the motor housing after riveting.

[0010] Preferably, there are three upper positioning slots and three lower positioning slots, with a 120° interval between adjacent upper and lower positioning slots. Since the motor housing is a cylindrical structure open at one end, its extended side is also circular. By equally dividing the extended side and the edge of the motor end cover into three upper and three lower positioning slots, the interval between adjacent upper and lower positioning slots is 120°. Similarly, if there are four upper and lower positioning slots, the interval between adjacent upper and lower positioning slots is 90°.

[0011] Preferably, there are three upper convex plates and three lower convex plates, with a 120° interval between adjacent upper and lower convex plates. The method of setting the upper and lower convex plates is the same as the method of setting the upper and lower positioning grooves. When there are three upper and lower convex plates, the 120° interval between adjacent upper and lower positioning grooves is also 120°, and so on.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The brushless DC motor housing riveting structure provided by this utility model features simple structure, convenient and efficient operation, and stable and reliable riveting. It can effectively replace the current plastic sealing process and improve the working environment for operators. This utility model mainly includes a motor housing, a motor end cover, and a rotating shaft, with the rotating shaft passing through the motor end cover and connecting to the motor housing. An upper positioning groove and an upper protrusion are provided on the extended side of the motor housing, while a lower positioning groove and a lower protrusion are provided on the edge of the motor end cover. The positioning requirements before riveting the motor housing and motor end cover are that the upper and lower positioning grooves correspond and overlap, and the upper and lower protrusions correspond and overlap. Simultaneously, the anti-misoperation fixing post and the anti-misoperation positioning groove engage with each other, further reducing operator errors and greatly improving overall automation performance. Compared with existing processes, this utility model, combined with automated production line operations, can effectively improve work efficiency. It can also reduce scrap losses from the plastic sealing process and improve material utilization. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall connection of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the motor housing in this utility model;

[0018] Figure 3 : This is a schematic diagram of the structure of the motor end cover in this utility model;

[0019] Figure 4 This is a bottom view of the motor end cover in this utility model;

[0020] Figure 5 This is a schematic diagram of the overall connection from a bottom view in this utility model.

[0021] The markings in the diagram are as follows: 1. Motor housing; 2. Motor end cover; 3. Motor shaft; 101. Extension side; 102. Upper positioning groove; 103. Upper convex plate; 104. Foolproof positioning groove; 201. Lower positioning groove; 202. Lower convex plate; 203. Fixing buckle; 204. Foolproof fixing post. Detailed Implementation

[0022] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0023] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0024] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This embodiment provides a riveting structure for the housing of a brushless DC motor, such as... Figures 1 to 5 As shown: It includes a motor housing 1, a motor end cover 2, and a rotating shaft 3. The rotating shaft 3 passes through the motor end cover 2 and connects to the motor housing 1. The motor housing 1 is a cylindrical structure with one end open. The open end of the motor housing 1 extends outward and connects to an extension side 101. Multiple upper positioning grooves 102 are equally divided at the edge of the extension side 101. Multiple lower positioning grooves 201 are equally divided at the edge of the motor end cover 2, and the upper positioning grooves 102 and the lower positioning grooves 201 correspond to each other. Multiple fixing buckles 203 are also provided at the edge of the motor end cover 2 to fasten the fixing buckles 203 to the edge of the extension side 101.

[0026] This embodiment also includes an anti-mistake positioning groove 104 formed at the upward-facing opening end of the motor housing 1, and an anti-mistake fixing post 204 added above one end face of the motor end cover 2. The anti-mistake fixing post 204 engages with the anti-mistake positioning groove 104. In this utility model, the anti-mistake positioning groove 104 is set at the edge of the opening end of the motor housing 1, and the anti-mistake fixing post 204 is set above one end face of the motor end cover 2. In use, by engaging the anti-mistake positioning groove 104 with the anti-mistake fixing post, the riveting position of the motor housing 1 and the motor cover 2 can be accurately positioned, further reducing operator errors and greatly improving the overall automation performance.

[0027] This embodiment also includes multiple upper protruding plates 103 extending outwards at the edge of the extended side 101, which correspond to multiple lower protruding plates 202 extending outwards at the edge of the motor end cover. When there are three upper positioning grooves 102 and three lower positioning grooves 201, and three upper protruding plates 103 and three lower protruding plates 202, the interval angle between two adjacent upper positioning grooves 102 and lower positioning grooves 201, and between two upper protruding plates 103 and lower protruding plates 202 is 120°. Similarly, if there are four upper positioning grooves 102 and four lower positioning grooves 201, and four upper protruding plates 103 and four lower protruding plates 202, the interval angle between adjacent upper positioning grooves 102 and lower positioning grooves 201, and between two upper protruding plates 103 and lower protruding plates 202 is 90°. Similarly, if there are six upper positioning grooves 102 and six lower positioning grooves 201, and six upper convex plates 103 and six lower convex plates 202, then the interval angle between adjacent upper positioning grooves 102 and lower positioning grooves 201, and between upper convex plates 103 and lower convex plates 202 is 60°.

[0028] Method of using this utility model

[0029] This utility model's structure uses a dedicated riveting mechanism to press-fit the motor housing 1, motor end cover 2, and rotating shaft 3. In addition to the motor housing 1, motor end cover 2, and rotating shaft 3, the brushless DC motor of this utility model also includes a winding assembly, rotor assembly, drive board, and insulation assembly. In use, the motor housing 1 is first placed on the riveting mechanism. Then, the winding assembly, rotor assembly, drive board, and insulation assembly are sequentially placed inside the motor housing 1 using the riveting mechanism. Finally, the motor end cover 2 is placed on top of the motor housing 1. Specifically, the upper positioning groove 102 at the edge of the extension side 101 is aligned with the lower positioning groove 201 at the edge of the motor end cover 2. The upper protruding plate 103 at the edge of the extension side 101 is aligned with the lower protruding plate 202 at the edge of the motor end cover 2. The anti-foolproof positioning groove 104 and the anti-foolproof fixing post 204 are engaged to ensure precise positioning of the motor housing 1 and motor end cover 2. Finally, the riveting mechanism is used to press down. When the production line moves to a fixed position, the sensor senses and starts the cylinder to press down. The motor housing 1 and the motor end cover 2 can be snapped together by the fixing buckle 203.

[0030] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] In addition to the embodiments described above, this utility model may have other implementation methods. Those skilled in the art can still modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A riveting structure for a brushless DC motor, characterized in that: The device includes a motor housing (1), a motor end cover (2), and a rotating shaft (3). The rotating shaft (3) passes through the motor end cover (2) and connects to the motor housing (1). The motor housing (1) is a cylindrical structure with one end open. The open end of the motor housing (1) extends outward and connects to an extension side (101). Multiple upper positioning grooves (102) are equally divided at the edge of the extension side (101). Multiple lower positioning grooves (201) are equally divided at the edge of the motor end cover (2). The upper positioning grooves (102) correspond to the lower positioning grooves (201). Multiple fixing buckles (203) are also provided at the edge of the motor end cover (2) to fasten the fixing buckles (203) to the edge of the extension side (101).

2. The riveting structure for a brushless DC motor according to claim 1, characterized in that: The motor housing (1) has an upward-facing anti-foolproof positioning groove (104) at the open end.

3. The riveting structure for a brushless DC motor according to claim 2, characterized in that: An anti-foolproof fixing post (204) is also provided above one end face of the motor end cover (2), and the anti-foolproof fixing post (204) is engaged with the anti-foolproof positioning groove (104).

4. The riveting structure for a brushless DC motor according to claim 1, characterized in that: The extended edge (101) also has multiple upper convex plates (103) extending outward at equal intervals, and the upper convex plates (103) correspond to the multiple lower convex plates (202) extending outward at equal intervals at the edge of the motor end cover.

5. The riveting structure for a brushless DC motor according to claim 1, characterized in that: The upper positioning groove (102) and the lower positioning groove (201) are each set to three, and the interval angle between two adjacent upper positioning grooves (102) and lower positioning grooves (201) is 120°.

6. The riveting structure for a brushless DC motor according to claim 4, characterized in that: The upper convex plate (103) and the lower convex plate (202) are each set to three, and the interval angle between two adjacent upper convex plates (103) and lower convex plates (202) is 120°.

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