Motor housing assembly and motor using the same

Abstract

The utility model relates to a kind of motor shell assembly and motor using it, comprising: cabinet, its inside has the accommodation space for assembling the stator component of motor;Cabinet includes the upper shell and lower shell of the accommodation space formed by being opposite;Multiple pole claws are respectively provided on the end face of upper shell and lower shell facing each other, and multiple pole claws are extended towards the accommodation space in the form of protruding;Shell, with the receiving cavity for accommodating cabinet and the shell opening suitable for cabinet loading communicated with receiving cavity;Cabinet is suitable for interference fixed in receiving cavity;And shell cover, suitable for covering on shell opening, and shell cover and shell can be detachably assembled cooperation.The motor shell assembly of the utility model does not rely on injection mold, and simplifies assembly mode, so that assembly efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor housing assembly and a motor using the same. Background Technology

[0002] Electric motors are widely used in various industries. The main features of a typical electric motor include a housing assembly, a rotor assembly, and a stator assembly. The housing assembly consists of a housing and a cover, while the stator assembly is assembled and fixed within the housing.

[0003] In alternative scenarios, for example, CN210129782 U discloses a motor stator injection molding assembly device and a small motor, which includes a stator assembly, a housing, and a stator injection molded part. The housing has an internal accommodating space, and the stator assembly is placed within the accommodating space. The stator injection molded part is formed by injection molding the stator assembly and the housing after they are placed in a mold. Based on this disclosed technology, although forming an integral structure between the stator assembly and the housing can completely isolate the motor's coil windings or wires from the outside world through this integral injection molding structure, forming a protective structure, the injection molding method, especially insert injection molding, has low production efficiency and requires high precision in the injection mold. Furthermore, in the case of insert injection molding, the stator assembly needs to be designed with a special claw plate, and in order to improve the reliability of the mating structure formed between the stator assembly and the housing, the formed stator injection molded part needs to have a certain thickness. Therefore, both the design of the special claw plate and the forming of the stator injection molded part will increase the overall size of the motor.

[0004] In response to the above situation, given that the currently used motors have problems such as insufficiently simplified assembly methods, low assembly efficiency, and high requirements for molds, it is necessary to design new motor housing components. Utility Model Content

[0005] The primary objective of this invention is to provide a motor housing assembly to address the technical problem of optimizing its assembly process.

[0006] The second objective of this invention is to provide a motor that solves the technical problem of optimizing the assembly process of the housing components used therein.

[0007] The motor housing assembly of this utility model is implemented as follows: An electric motor housing assembly, comprising: A housing having an internal space for accommodating a stator assembly for assembling a motor; the housing includes an upper shell and a lower shell opposing each other to form the accommodating space; the upper shell and the lower shell have multiple pole claws extending protruding toward the accommodating space on their facing end faces. A housing having a receiving cavity for accommodating the housing and a housing opening communicating with the receiving cavity, adapted for housing insertion; the housing being adapted to be interference-fitted into the receiving cavity; and A cover, which is suitable for covering the opening of the shell, and the cover and the shell are detachably assembled together.

[0008] In an optional embodiment of this utility model, the cover and the housing are further provided with a positioning and mating structure.

[0009] In an optional embodiment of this utility model, the positioning and mating structure includes a plurality of positioning notches located on the side end face of the upper shell facing the cover and between each pair of adjacent pole claws, and a positioning boss located on the side end face of the cover facing the upper shell, suitable for being embedded one-to-one into the plurality of positioning notches.

[0010] In an optional embodiment of this utility model, at least two raised ribs protruding toward the center of the receiving cavity are provided at intervals along the circumferential direction on the inner wall surface of the receiving cavity.

[0011] In an optional embodiment of this invention, the bottom end face of the lower shell facing away from the upper shell is adapted to face the bottom wall of the receiving cavity; and The rib is adapted to fit into the outer side wall of the lower shell.

[0012] In an optional embodiment of this invention, the top end of the upper shell facing away from the lower shell is adapted to face the shell opening; and The outer wall of the upper shell is provided with two protrusions that are circumferentially raised and facing away from the center of the receiving cavity, and the protrusions are adapted to be in interference fit with the inner wall of the receiving cavity.

[0013] In an optional embodiment of this invention, at least two latches are spaced apart on the outer side wall of the housing facing away from the receiving cavity; and The cover is provided with at least two snap-fit ​​parts suitable for one-to-one engagement with at least two snap hooks.

[0014] The motor of this utility model is implemented as follows: An electric motor includes at least: the motor housing assembly, a stator assembly adapted for mounting and fixing in the accommodating space, and a junction box adapted for mating with the stator assembly; wherein The stator assembly includes a cooperating intermediate electrode plate and stator coils; and The pole claws of the middle pole plate extend axially along the stator assembly to be adapted to interlock with the pole claws in the upper and lower housings.

[0015] In an optional embodiment of this utility model, the housing is further integrally provided with a box body for accommodating the junction box; and The box body is provided with at least one guide rib that is raised and adapted to abut against the junction box.

[0016] In an optional embodiment of this utility model, the upper and lower shells are respectively provided with snap-fit ​​recesses suitable for cooperating with the junction box.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects: The motor housing assembly and the motor using it of the present invention eliminate the problem of complicated processing and high requirements for injection molds caused by insert injection molding between the stator assembly and the housing. The overall motor housing assembly is divided into three relatively independent component units: housing, shell and cover. As long as the assembly and cooperation between these three units is achieved, the fast and reliable mating requirements can be met. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the motor housing assembly of this utility model when the cover is separated from the housing; Figure 2 This is a schematic diagram of the motor housing assembly of this utility model when the housing is separated from the casing. Figure 3 This is a schematic diagram of the structure of the motor housing assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the motor housing assembly of this utility model; Figure 5 This is a schematic diagram of the stator assembly of the motor housing assembly of this utility model; Figure 6 This is a schematic diagram of the upper shell structure of the motor housing assembly of this utility model; Figure 7 This is a schematic diagram of the structure of the snap hook of the motor housing assembly of this utility model; Figure 8 This is a schematic diagram of the cover structure of the motor housing assembly of this utility model.

[0019] In the diagram: 1. Housing 11. Upper housing 12. Lower housing 13. Pole claw 14. Positioning notch 15. Snap-fit ​​notch 16. Housing 2. Receiving cavity 21. Raised rib 22. Snap hook 23. Housing cover 3. Positioning boss 31. Snap-fit ​​part 32. Limiting rib 33. Middle pole plate 4. Stator coil 5. Junction box 6. Box body 7. Guide rib 8. Connector 9. Detailed Implementation

[0020] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Example 1: Please see Figures 1 to 8As shown, this embodiment provides a motor housing assembly, including: a housing 1, a housing 2, and a cover 3, which are suitable for assembly and mating.

[0022] Generally, the housing 1 has an internal space for accommodating the stator assembly of the motor; the housing 1 includes an upper shell 11 and a lower shell 12 opposing each other to form the accommodating space; the upper shell 11 and the lower shell 12 have a plurality of pole claws 13 extending protruding toward the accommodating space on their facing end faces. The housing 2 has a receiving cavity 21 for accommodating the housing 1 and a shell opening communicating with the receiving cavity 21 for inserting the housing 1; the housing 1 is adapted to be interference-fitted into the receiving cavity 21. The shell cover 3 is adapted to cover the shell opening, and the shell cover 3 is detachably assembled with the housing 2.

[0023] Furthermore, to improve the overall reliability of the motor housing assembly structure, a positioning and mating structure is provided between the cover 3 and the housing 1. Referring to the accompanying drawings, one optional embodiment of this positioning and mating structure includes multiple positioning notches 14 located on the side end face of the upper housing 11 facing the cover 3 and between each pair of adjacent pole claws 13, and positioning bosses 31 located on the side end face of the cover 3 facing the upper housing 11, suitable for one-to-one insertion into the multiple positioning notches 14. In other words, in this embodiment, the housing 1 not only serves to mate with the stator assembly and the housing 2, but also simplifies the overall structure of the stator assembly, allowing the pole claws 13 that mate with the middle plate of the stator assembly to be directly formed on the housing 1, thus eliminating the need for a separate claw pole plate design; simultaneously, it also achieves positioning and mating with the cover 3. Therefore, through this multi-purpose design, not only is the structure of the overall housing 2 assembly simplified, but the assembly process is also simplified. It is worth noting that, in an optional case, from the perspective of ease of processing, the upper shell 11 and the lower shell 12 used in this embodiment actually adopt the same structure and can be used in opposition. In this way, there is no need to distinguish between the upper shell 11 and the lower shell 12 during the processing, which can also simplify the production management process.

[0024] Based on the above, the overall motor housing assembly is divided into three independent parts. The housing 1 is simultaneously connected to the cover 3 and the housing 2, and the housing 2 is simultaneously connected to the cover 3 and the housing 1. In other words, the cover 3 is simultaneously connected to the housing 1 and the housing 2. Thus, each of the three parts is simultaneously connected to the other two parts, which can greatly improve the structural stability of the overall motor housing assembly.

[0025] Next, it should be explained that the interference fit between the housing 1 and the receiving cavity 21 can be achieved in the following way: In the first method, at least two protruding ribs 22, protruding towards the center of the receiving cavity 21, are provided at intervals along the circumferential direction on the inner wall of the receiving cavity 21. Based on this, it should be noted that the bottom end face of the lower shell 12 facing away from the upper shell 11 is adapted to face the bottom wall of the receiving cavity 21; and the protruding ribs 22 are adapted to have an interference fit with the outer wall surface of the lower shell 12. In this case, when the housing 1 is installed into the receiving cavity 21, the lower shell 12 enters the receiving cavity 21 first. Designing the protruding ribs 22 to have an interference fit with the lower shell 12 ensures that, while satisfying the interference fit between the housing 1 and the receiving cavity 21, there is no resistance during the assembly process of the housing 1 relative to the receiving cavity 21 when the lower shell 12 does not contact the protruding ribs 22, thus resulting in high assembly efficiency.

[0026] The second type has the top of the upper shell 11 facing away from the lower shell 12, which is adapted to face the shell opening; and the outer wall of the upper shell 11 is provided with two central protrusions facing away from the receiving cavity 21 at intervals along the circumferential direction, and the protrusions are adapted to have an interference fit with the inner wall of the receiving cavity 21. In this case, when the housing 1 is installed into the receiving cavity 21, the lower shell 12 enters the receiving cavity 21 first. By designing the protrusions on the outer wall of the upper shell 11, the assembly process of the housing 1 relative to the receiving cavity 21 can be achieved without resistance when the receiving cavity 21 does not contact the protrusions of the upper shell 11, while ensuring the interference fit between the housing 1 and the receiving cavity 21. Therefore, the assembly efficiency is high.

[0027] Based on the above structure, it should be noted that, regarding the shape of the rib 22 and the protrusion, taking the attached figure as an example, the interference fit surface of the rib 22 and the protrusion is an arc surface. This design can ensure assembly strength and avoid assembly difficulties due to excessive interference resistance.

[0028] Regarding the connection method between the cover 3 and the housing 2, generally speaking, they can be achieved by a snap-fit ​​connection. This embodiment will illustrate one such case with reference to the accompanying drawings: The outer wall of the housing 2 facing away from the receiving cavity 21 has at least two latches 23 spaced apart; and the cover 3 has at least two engaging portions 32 suitable for engaging with at least two latches 23 one-to-one. The engaging portions 32 here have a long arm-like structure relative to the cover 3, extending from the cover 3 towards the housing 2 to facilitate engagement between the engaging portions 32 and the latches 23. This allows the engaging portions 32 to have a certain range of deformation capability relative to the cover 3, thereby enabling disassembly and assembly with the latches 23 through deformation. Optionally, to quickly achieve alignment between the engaging portions 32 of the cover 3 and the corresponding latches 23, each latch 23 has limiting ribs 33 on both sides, forming an engaging interval suitable for the engaging portion 32 to be inserted between the pair of limiting ribs 33 on both sides of each latch 23. In this embodiment, the engagement of the latches 23 and the engaging portions 32 facilitates the disassembly and assembly of the cover 3 and the housing 2, reducing defective parts and scrap.

[0029] In summary, the motor housing assembly of this embodiment eliminates the cumbersome processing and high requirements for injection molds caused by insert injection molding between the stator assembly and the housing 1. This makes the overall motor housing assembly divided into three relatively independent component units: housing 1, housing 2, and housing cover 3. As long as the assembly and cooperation between these three units is achieved, the fast and reliable mating requirements can be met.

[0030] Example 2: Please see Figures 1 to 8 As shown, based on the motor housing assembly of Embodiment 1, this embodiment provides a motor, including at least: the motor housing assembly of Embodiment 1, a stator assembly suitable for assembly and fixation in an accommodating space, and a junction box 6 suitable for mating with the stator assembly; wherein the stator assembly includes a cooperating intermediate pole plate 4 and a stator coil 5; and the pole claws 13 of the intermediate pole plate 4 extend axially along the stator assembly to be adapted to interlock with the pole claws 13 in the upper shell 11 and the lower shell 12. Here, the junction box clamps the stator coil 5 through a slot and is fixed in the housing 1 so that the connector 9 of the stator assembly is fixed and soldered to the stator coil 5 through the junction box 6. For the junction box 6 here, the upper shell 11 and the lower shell 12 are respectively provided with snap-fit ​​notches 15 suitable for cooperating with the junction box 6. The engagement of the snap-fit ​​notches 15 with the junction box 6 can be used to fix the junction box 6 on the one hand, and on the other hand, it can guide the assembly process of the middle electrode plate 4 with the upper shell 11 and the lower shell 12, and play an auxiliary role in the reliability and stability of the mating structure formed by the middle electrode plate 4 with the upper shell 11 and the lower shell 12.

[0031] It should be noted that, from the perspective of ease of processing and assembly, the upper shell 11 and the lower shell 12 are roughly cylindrical, and the corresponding receiving cavity 21 used to fit the housing 1 is also cylindrical.

[0032] Regarding the assembly and mating relationship between the housing 1 and the stator assembly, generally speaking, the stator assembly's intermediate plate 4 and the housing 1 are fixed to the housing 1 using a transition fit. Furthermore, the junction box 6 and the snap-fit ​​recess 15 work together to form a single integrated structure, comprising the stator assembly, the upper housing 11, and the lower housing 12. This integrated structure is then inserted into the housing 2, and a reliable connection is formed between the housing 2 and the cover 3 to reliably fix the stator assembly and the housing 1 within the housing 2. It should also be noted that the housing 2 also integrally provides a housing 7 for accommodating the junction box 6; and the housing 7 has at least one protruding guide rib 8 suitable for abutting against the junction box 6. Based on this, when the housing 1 is installed into the receiving cavity 21 of the housing 2, the guide rib 8 contacts the junction box 6 before the rib 22 contacts the housing 1 or the protrusion contacts the receiving cavity 21. Under this design, the direction of the connector 9 of the stator assembly is fixed. Then the rib 22 contacts the housing 1 or the protrusion contacts the receiving cavity 21. Finally, the bottom end face of the lower shell 12, facing away from the upper shell 11, contacts the bottom wall of the receiving cavity 21. This means that the housing 1 and the housing 2 are assembled in place.

[0033] In summary, for the motor in this embodiment, the motor housing assembly does not depend on the injection mold and simplifies the assembly method, thus improving assembly efficiency.

[0034] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. 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.

[0035] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are 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.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A motor housing assembly, characterized in that, include: A housing having an internal space for accommodating a stator assembly for assembling a motor; the housing includes an upper shell and a lower shell opposing each other to form the accommodating space; The upper and lower shells are respectively provided with multiple pole claws that protrude and extend toward the accommodating space on their facing end faces. A housing having a receiving cavity for receiving the housing and a housing opening communicating with the receiving cavity for insertion into the housing; the housing is adapted to be interference-fitted into the receiving cavity; as well as A cover, which is suitable for covering the opening of the shell, and the cover and the shell are detachably assembled together.

2. The motor housing assembly according to claim 1, characterized in that, The cover and the housing are also provided with a positioning and fitting structure.

3. The motor housing assembly according to claim 2, characterized in that, The positioning and mating structure includes a plurality of positioning notches located on the side end face of the upper shell facing the cover and between each pair of adjacent pole claws, and a positioning boss located on the side end face of the cover facing the upper shell, suitable for one-to-one insertion into the plurality of positioning notches.

4. The motor housing assembly according to claim 1, characterized in that, The inner wall of the receiving cavity is provided with at least two raised ribs that protrude toward the center of the receiving cavity at intervals along the circumferential direction.

5. The motor housing assembly according to claim 4, characterized in that, The bottom end face of the lower shell, facing away from the upper shell, is adapted to face the bottom wall of the receiving cavity; and The rib is adapted to fit into the outer side wall of the lower shell.

6. The motor housing assembly according to claim 1, characterized in that, The top of the upper shell, facing away from the lower shell, is adapted to face the shell opening; and The outer wall of the upper shell is provided with two protrusions that are circumferentially raised and facing away from the center of the receiving cavity, and the protrusions are adapted to be in interference fit with the inner wall of the receiving cavity.

7. The motor housing assembly according to any one of claims 1 to 6, characterized in that, The outer wall of the housing facing away from the receiving cavity is designed with at least two latches at intervals; and The cover is provided with at least two snap-fit ​​parts suitable for one-to-one engagement with at least two snap hooks.

8. An electric motor, characterized in that, It includes at least: a motor housing assembly as described in any one of claims 1 to 7, a stator assembly adapted for mounting and fixing in the accommodating space, and a junction box adapted for mating with the stator assembly; wherein The stator assembly includes a cooperating intermediate electrode plate and stator coils; and The pole claws of the middle pole plate extend axially along the stator assembly to be adapted to interlock with the pole claws in the upper and lower housings.

9. The motor according to claim 8, characterized in that, The housing also integrally comprises a box for accommodating the junction box; and The box body is provided with at least one guide rib that is raised and adapted to abut against the junction box.

10. The motor according to claim 9, characterized in that, The upper and lower shells are respectively provided with snap-fit ​​recesses suitable for mating with the junction box.

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