Motor outgoing line sealing structure and motor

Abstract

The utility model relates to the technical field of motors, and discloses a motor outgoing line sealing structure and a motor. The motor comprises the motor outgoing line sealing structure, the motor outgoing line sealing structure comprises a machine shell assembly and a wiring block, the machine shell assembly is provided with an outgoing line hole, the wiring block is connected with the machine shell assembly, a groove is formed in the side, attached to the machine shell assembly, of the wiring block, a lead hole is defined by the groove and the outer wall of the machine shell assembly, and the lead hole is communicated with the outgoing line hole. The lead sequentially penetrates through the wire outlet hole and the wire leading hole and extends out of the machine shell assembly, and the wire outlet hole and the wire leading hole are filled with sealant. The motor provided by the utility model is provided with the motor outgoing line sealing structure, the sealing reliability is good, the structure is simple, the lead installation is convenient to realize, and the production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor outlet sealing structure. Background Art

[0002] The axial flux motor has the advantages of compact structure, small size, and high torque density. It is widely used in electric vehicles, flywheel energy storage, wind power generation and other fields. The axial flux motor includes a stator, and the stator includes a housing assembly and a stator core and a stator winding arranged in the housing assembly. During the operation of the motor, the stator winding will generate heat. In order to ensure the stable operation of the motor, coolant will be introduced into the housing assembly to cool the stator winding and the stator core. Therefore, it is necessary to ensure that the housing assembly forms a closed cavity. In order to monitor the internal temperature of the stator, the motor is also equipped with a temperature sensor. The housing assembly is provided with a wire outlet hole. The lead of the temperature sensor extends from the housing assembly and is electrically connected to the control component.

[0003] In order to ensure the sealing of the housing assembly, in the prior art, a commonly used sealing method is to apply sealant to the outlet hole, but this structural sealant is easy to fall off, resulting in poor sealing reliability of the housing assembly. Another sealing method is to set a structural member outside the outlet hole, the structural member seals the outlet hole on the housing assembly, and at the same time, a lead hole is set on the structural member, and the lead of the temperature sensor passes through the outlet hole on the housing assembly and then passes through the lead hole on the structural member to be led out. This structure is relatively complex, and the installation operation of the lead is cumbersome, which reduces the production efficiency of the motor.

[0004] Therefore, there is an urgent need for a motor outlet sealing structure and a motor to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a motor lead-out sealing structure, which has good sealing reliability and simple structure and is convenient for installing the lead-out wires.

[0006] Another object of the utility model is to provide a motor, which has good sealing reliability and high production efficiency by providing the above-mentioned motor outlet sealing structure.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The motor outlet sealing structure includes:

[0009] A housing assembly, on which a wire outlet hole is provided;

[0010] A wiring block is connected to the casing assembly, a groove is provided on one side of the wiring block that is in contact with the casing assembly, the groove and the outer wall of the casing assembly are arranged to form a lead hole, the lead hole is connected to the outlet hole, the lead wire passes through the outlet hole and the lead hole in sequence and extends to the outside of the casing assembly, and the outlet hole and the lead hole are filled with sealant.

[0011] As an optional solution, sealant is applied between the junction block and the housing assembly.

[0012] As an optional solution, a plurality of wiring fasteners are further included, wherein the wiring fasteners pass through the wiring block and are threadedly connected to the housing assembly.

[0013] As an optional solution, the axial direction of the lead-in hole is arranged at an angle with the axial direction of the outlet hole.

[0014] As an optional solution, the lead hole is a blind hole; and / or

[0015] An adhesive holding space is formed at one end of the lead hole close to the outlet hole, and sealant is arranged in the adhesive holding space.

[0016] As an optional solution, the housing assembly includes:

[0017] The housing is provided with an opening on one side along the axial direction, and a mounting groove is provided around the edge of the opening;

[0018] The stator cover is installed in the assembly groove and blocks the opening. The wire outlet hole is arranged on the stator cover. The terminal block is connected to the stator cover and both ends thereof are respectively against the side walls of the assembly groove.

[0019] As an optional solution, along the axial direction of the housing assembly, the height of the wiring block is not higher than the height of the shell.

[0020] As an optional solution, a plurality of threaded holes are provided on the shell, some of which are used for connecting the shell and the stator cover plate, and some of which are used for connecting the terminal block and the shell. The shell is provided with reinforcing ribs protruding inwardly at at least some of the threaded holes.

[0021] As an optional solution, the motor outlet sealing structure further includes a plurality of casing fasteners, and the casing fasteners penetrate the stator cover plate and are threadedly connected to the housing.

[0022] A motor comprises a stator core, a stator coil and the motor outlet sealing structure, wherein the stator core and the stator coil are arranged in the housing assembly.

[0023] The beneficial effects of the utility model are:

[0024] The motor outlet sealing structure of the utility model, when assembling, first let the lead wire pass through the outlet hole, then apply sealant in the outlet hole and the groove of the terminal block, and then install the terminal block on the housing assembly. In this process, the lead wire is aligned with the groove, so that the lead wire can pass through the lead hole surrounded by the groove and the housing assembly. The above motor outlet sealing structure, on the one hand, the installation of the lead wire is completed synchronously during the process of fixing the terminal block, thereby improving the assembly efficiency of the motor; on the other hand, the terminal block can press and prevent the sealant in the lead hole and the outlet hole from falling off, thereby ensuring the reliability of the outlet position sealing.

[0025] The motor of the utility model has good sealing reliability and high production efficiency by arranging the motor outlet line sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a stator provided in a specific embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the local structure of the stator in the disassembled state provided by the specific implementation mode of the utility model;

[0028] Figure 3 It is a cross-sectional view of a motor outlet sealing structure provided by a specific embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of a wiring block provided in a specific implementation manner of the utility model.

[0030] In the figure:

[0031] 10. Casing assembly; 11. Shell; 111. Reinforcement rib; 112. Assembly groove; 113. First threaded hole; 114. Second threaded hole; 115. Cooling medium inlet; 116. Cooling medium outlet; 12. Stator cover; 121. Wire outlet hole; 123. First through hole; 124. Second through hole;

[0032] 20. Wiring block; 21. Groove; 22. Mounting hole; 23. Sink; 24. Avoidance gap; 25. Glue storage space;

[0033] 30. Lead hole; 40. Wiring fastener;

[0034] 50. Casing fasteners;

[0035] 60. Lead. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] This embodiment provides a motor outlet sealing structure and a motor, wherein the motor includes a motor outlet sealing structure. In this embodiment, an axial flux motor is used as an example for description. Figure 1 As shown, the motor includes a stator and a rotor (not shown), and the stator and the rotor are arranged axially. The stator includes a housing assembly 10, a stator core and a stator coil. The housing assembly 10 is surrounded to form a receiving cavity, and the stator coil is wound on the stator core and is accommodated in the receiving cavity. The housing assembly 10 is provided with a cooling medium inlet 115 and a cooling medium outlet 116, and the cooling medium inlet is used to pass the cooling medium into the housing assembly 10, and the cooling medium outlet 116 is used to discharge the cooling medium after heat exchange in the housing assembly 10.

[0041] like Figure 1 and Figure 2 As shown, the housing assembly 10 includes a shell 11 and a stator cover plate 12. The housing 11 is provided with an opening on one side along the axial direction, and the stator cover plate 12 blocks the opening to form a receiving cavity. The cooling medium inlet 115 and the cooling medium outlet 116 are both provided on the housing 11. It should be noted that the housing 11 is not only the housing of the stator, but also the housing of the entire axial flux motor. Preferably, the housing 11 is provided with an assembly groove 112 around the edge of the opening, and the stator cover plate 12 is installed in the assembly groove 112. The stator cover plate 12 increases the matching area with the stator cover plate 12 by abutting against the groove wall of the assembly groove 112, which is beneficial to improving the sealing of the housing assembly 10 itself. In this embodiment, the stator also includes a plurality of housing fasteners 50, and the housing fasteners 50 pass through the stator cover plate 12 and are connected to the housing 11, thereby realizing the fixation of the housing 11 and the stator cover plate 12. Specifically, the housing fastener 50 is a bolt, a plurality of first threaded holes 113 are provided in the assembly groove 112, and a plurality of first through holes 123 are provided on the stator cover 12. When the stator cover 12 is placed in the assembly groove 112, each first through hole 123 is arranged corresponding to a first threaded hole 113, and the housing fastener 50 is threadedly connected with the corresponding first threaded hole 113 after passing through the first through hole 123. It can be understood that in order to ensure the sealing of the connection between the stator cover 12 and the housing 11, a sealant can be applied to the connection. In other embodiments, the housing fastener 50 can also be a rivet, etc., which is not specifically limited here.

[0042] Preferably, the stator further includes a temperature sensor, which is disposed inside the housing assembly 10 and is used to detect the temperature inside the housing. In this embodiment, the stator includes a plurality of temperature sensors, and the temperatures at different positions inside the stator are detected respectively. The lead wire 60 of the temperature sensor passes through the housing assembly 10 from inside to outside and is connected to an external control component.

[0043] In order to ensure good sealing performance of the housing assembly 10 at the outlet position, the motor is provided with a motor outlet sealing structure. Figure 2-Figure 4 As shown, the housing assembly 10 is provided with a wire outlet hole 121, and the motor outlet sealing structure also includes a terminal block 20, which is connected to the housing assembly 10, and a groove 21 is provided on one side of the terminal block 20 for being attached to the housing assembly 10, and the groove 21 and the outer wall of the housing assembly 10 are surrounded to form a lead hole 30, and the lead hole 30 is connected to the wire outlet hole 121. The lead wire 60 in the housing assembly 10 passes through the wire outlet hole 121 and the lead hole 30 in sequence and extends to the outside of the housing assembly 10, and the wire outlet hole 121 and the lead hole 30 are filled with sealant.

[0044] When assembling the stator, first ensure that the lead wire 60 of the temperature sensor passes through the outlet hole 121 on the housing assembly 10, then apply sealant to the outlet hole 121 and the groove 21 of the terminal block 20, and then install the terminal block 20 on the housing assembly 10. During this process, ensure that the lead wire 60 is aligned with the groove 21, so that the lead wire 60 can pass through the lead hole 30 surrounded by the groove 21 and the housing assembly 10. On the one hand, the installation of the lead wire 60 is completed synchronously during the process of fixing the terminal block 20, which is easy to operate, thereby improving the assembly efficiency of the motor; on the other hand, the terminal block 20 can press and prevent the sealant in the lead hole 30 and the outlet hole 121 from falling off, thereby ensuring the reliability of the sealing of the outlet position. By setting the above-mentioned motor outlet sealing structure, the motor has good sealing reliability and high production efficiency.

[0045] In this embodiment, Figure 2 and Figure 4 As shown, the outlet hole 121 is provided on the stator cover plate 12, and a plurality of outlet holes 121 are provided. A plurality of grooves 21 are also provided on the junction block 20, and are provided one-to-one with the outlet holes 121, so as to ensure that the lead wire 60 of each temperature sensor can sequentially pass through the corresponding outlet hole 121 and the lead hole 30 and extend to the outside of the housing assembly 10.

[0046] Preferably, sealant is also applied between the junction block 20 and the stator cover plate 12 of the housing assembly 10, so that the lead hole 30 is also surrounded by the sealant, thereby further improving the reliability of the seal. It should be noted that the sealant between the junction block 20 and the stator cover plate 12 and the sealant in the groove 21 can be applied at the same time.

[0047] Preferably, if Figure 3 As shown, the lead hole 30 is constructed as a blind hole. On the one hand, it can prevent the lead 60 from being led out in the opposite direction, and on the other hand, it improves the overall sealing effect. Further, a glue holding space 25 is formed at one end of the lead hole 30 close to the outlet hole 121, and a sealant is arranged in the glue holding space 25. The glue holding space 25 enables the position close to the outlet hole 121 to accommodate more sealant, thereby further improving the reliability of the sealing of the outlet position. Optionally, the cross-section of the glue holding space 25 is consistent with the groove 21, so that it can be processed integrally with the groove 21, reducing the manufacturing cost of the wiring block 20. In some embodiments, the width of the glue holding space 25 is greater than the groove 21, so as to accommodate more sealant, thereby improving the reliability of the sealing.

[0048] Preferably, if Figure 3As shown, the axial direction of the lead hole 30 is set at an angle to the axial direction of the outlet hole 121. This setting increases the degree of tortuosity of the path for the lead 60 to be led out of the housing assembly 10, thereby further improving the sealing performance of the outlet sealing structure. Preferably, in this embodiment, the axial direction of the lead hole 30 is set perpendicular to the axial direction of the outlet hole 121, thereby facilitating the processing of the outlet hole 121 and the groove 21. In other embodiments, the angle between the axial direction of the lead hole 30 and the axial direction of the outlet hole 121 can also be set to an acute angle or an obtuse angle, which is not specifically limited here. In another embodiment, the extension trajectory of the groove 21 can also be set to a curve or a broken line, so that the trajectory of the lead hole 30 is constructed as a curve or a broken line, further increasing the degree of tortuosity of the lead 60 lead-out trajectory, and improving the reliability of the seal.

[0049] Preferably, if Figure 2 As shown, the motor outlet sealing structure also includes a plurality of wiring fasteners 40, which pass through the terminal block 20 and are threadedly connected to the housing assembly 10. On the one hand, the wiring fasteners 40 can apply a certain pre-tightening force to the terminal block 20, so that the terminal block 20 can be pressed more tightly against the outlet hole 121, the lead hole 30, and the sealant between the terminal block 20 and the housing assembly 10, thereby ensuring the reliability of the seal.

[0050] Alternatively, if Figure 2 As shown, the wiring fastener 40 is a bolt, the wiring block 20 is provided with a mounting hole 22, the stator cover 12 is provided with a second through hole 124, and the housing 11 is provided with a second threaded hole 114. When the stator cover 12 is installed in the sealing groove of the housing 11, the second through hole 124 is opposite to the second threaded hole 114, and the wiring fastener 40 is connected with the second threaded hole 114 after passing through the mounting hole 22 and the second through hole 124 in sequence, which is simple to operate and has good connection reliability. In this embodiment, the wiring block 20 is connected to the housing assembly 10 through two wiring fasteners 40, so two mounting holes 22, second through holes 124 and second threaded holes 114 are also provided accordingly. The two wiring fasteners 40 are arranged between the two housing fasteners 50. In other embodiments, the specific number of wiring fasteners 40 can be flexibly adjusted and is not specifically limited here. In another embodiment, the specific connection relationship of the wiring fastener 40 can also be: a second threaded hole is set on the stator cover plate, and the wiring fastener passes through the mounting hole on the wiring block and is threadedly connected with the second threaded hole on the stator cover plate.

[0051] like Figure 2As shown, a plurality of threaded holes are provided on the housing 11, a portion of the plurality of threaded holes are first threaded holes 113 for connecting the housing 11 with the stator cover plate 12, and a portion of the plurality of threaded holes are second threaded holes 114 for connecting the terminal block 20 with the housing 11. Preferably, the housing 11 is provided with reinforcing ribs 111 protruding inwardly at the second threaded holes 114 and a portion of the first threaded holes 113, thereby improving the structural strength of the corresponding positions, ensuring the firmness of the connection positions of the housing fasteners 50 and the terminal fasteners 40, and improving the service life of the entire stator.

[0052] In this embodiment, Figure 1 and Figure 2 As shown, the terminal block 20 is a long strip-shaped plate. After the terminal block 20 is connected to the stator cover plate 12, it is located in the assembly groove 112 of the housing 11. Preferably, the two ends of the terminal block 20 along the length direction are respectively against the side walls of the assembly groove 112. Through the cooperation between the terminal block 20 and the groove wall of the assembly groove 112, the installation of the terminal block 20 can be positioned. On the one hand, it is ensured that the mounting hole 22 on the terminal block 20 is accurately opposite to the second through hole 124 on the stator cover plate 12, thereby improving the convenience of installation; on the other hand, it is ensured that the groove 21 on the terminal block 20 is accurately opposite to the outlet hole 121 on the stator cover plate 12, thereby avoiding the lead 60 from being damaged due to local twisting. In this embodiment, the two ends of the terminal block 20 along the length direction are respectively provided with avoidance gaps 24, and the avoidance gaps 24 are used to avoid the housing fasteners 50.

[0053] Preferably, if Figure 2 As shown, along the axial direction of the housing assembly 10, that is, the depth direction of the assembly groove 112, the height of the terminal block 20 is not higher than the height of the housing 11. On the one hand, it can prevent the terminal block 20 from interfering with the installation of the stator and the rotor; on the other hand, it can prevent the terminal block 20 from being squeezed and damaged by external force. In this embodiment, the upper surface of the terminal block 20 is flush with the upper surface of the housing 11, thereby improving the aesthetics of the stator.

[0054] Preferably, a recessed groove 23 is provided at the end of the mounting hole 22 of the terminal block 20, and the end of the wiring fastener 40 is at least partially accommodated in the recessed groove 23. This prevents the wiring fastener 40 from extending too much outside the housing assembly 10 in the axial direction and affecting the installation of the stator and other structures.

[0055] It can be understood that the above-mentioned motor lead-out sealing structure can be used not only for leading out the lead-out of the temperature sensor, but also for leading out the lead-out of the stator power line, stator coil and the like.

[0056] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. The motor outlet sealing structure is characterized by: include: A housing assembly (10) having a wire outlet hole (121) disposed thereon; A wiring block (20) is connected to the housing assembly (10); a groove (21) is provided on one side of the wiring block (20) that is in contact with the housing assembly (10); the groove (21) and the outer wall of the housing assembly (10) are arranged to form a lead hole (30); the lead hole (30) is connected to the outlet hole (121); a lead wire (60) passes through the outlet hole (121) and the lead hole (30) in sequence and extends to the outside of the housing assembly (10); and the outlet hole (121) and the lead hole (30) are filled with sealant.

2. The motor outlet sealing structure according to claim 1, characterized in that: A sealant is applied between the junction block (20) and the housing assembly (10).

3. The motor outlet sealing structure according to claim 1, characterized in that: It also includes a plurality of wiring fasteners (40), wherein the wiring fasteners (40) penetrate the wiring block (20) and are threadedly connected to the housing assembly (10).

4. The motor outlet sealing structure according to claim 1, characterized in that: The axial direction of the lead-in hole (30) and the axial direction of the outlet hole (121) are arranged at an angle.

5. The motor outlet sealing structure according to claim 1, characterized in that: The lead hole (30) is a blind hole; and / or An adhesive holding space (25) is formed at one end of the lead-in hole (30) close to the outlet hole (121), and a sealant is provided in the adhesive holding space (25).

6. The motor outlet sealing structure according to any one of claims 1 to 5, characterized in that: The housing assembly (10) comprises: The housing (11) is provided with an opening on one side along the axial direction, and an edge ring of the opening is provided with a mounting groove (112); A stator cover plate (12) is installed in the assembly groove (112) and blocks the opening; the wire outlet hole (121) is arranged on the stator cover plate (12); the terminal block (20) is connected to the stator cover plate (12) and both ends thereof are respectively abutted against the side walls of the assembly groove (112).

7. The motor outlet sealing structure according to claim 6, characterized in that: Along the axial direction of the housing assembly (10), the height of the wiring block (20) is not higher than the height of the housing (11).

8. The motor outlet sealing structure according to claim 6, characterized in that: The shell (11) is provided with a plurality of threaded holes, some of which are used for connecting the shell (11) and the stator cover plate (12), and some of which are used for connecting the terminal block (20) and the shell (11), and the shell (11) is provided with reinforcing ribs (111) protruding inwardly at at least some of the threaded holes.

9. The motor outlet sealing structure according to claim 6, characterized in that: The motor outlet sealing structure also includes a plurality of casing fasteners (50), wherein the casing fasteners (50) penetrate the stator cover plate (12) and are threadedly connected to the housing (11).

10. A motor, characterized in that: It comprises a stator core, a stator coil and the motor outlet sealing structure according to any one of claims 1 to 9, wherein the stator core and the stator coil are arranged in the housing assembly (10).

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