Stator plastic package structure

Abstract

The utility model relates to the technical field of stator sealing, in particular to a stator plastic package structure, which comprises a connecting part, a mounting part and a plastic package part, the connecting part is used for being connected with a stator iron core, the mounting part is arranged on the connecting part and is used for mounting a wiring terminal of a motor, and the plastic package part is arranged on the mounting part. And the plastic package part is filled among the connecting part, the mounting part and the stator core so as to integrally package the stator of the motor. The waterproof performance of an existing motor in outdoor application can be effectively improved, so that the service life of the motor is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of stator sealing, and in particular to a stator plastic sealing structure. Background Art

[0002] The main components of a DC permanent magnet motor are the stator housing, the wound stator and the rotor. The motor can be divided into an outer rotor motor and an inner rotor motor according to the location of the rotor. In an inner rotor motor, the wound stator is mounted on the stator housing, and the rotor is set inside the wound stator. At present, when producing an inner rotor motor, the stator housing, the wound stator and the rotor need to be processed separately, and the wound stator and the stator housing are assembled together, and finally the rotor is installed.

[0003] However, because the existing DC permanent magnet motors generally directly connect adjacent winding cores in the stator by welding, when the motor is used in an outdoor air-conditioning unit, the stator winding coil is prone to water seepage due to insufficient sealing, which affects the life of the existing motor in outdoor applications. Utility Model Content

[0004] In order to effectively improve the waterproofness of existing motors when used outdoors and to increase the service life of the motors, the present application provides a stator plastic packaging structure.

[0005] A stator plastic packaging structure provided in this application adopts the following technical solution:

[0006] A stator plastic packaging structure comprises: a connecting part, a mounting part and a plastic packaging part, wherein the connecting part is used to connect with the stator core, the mounting part is arranged on the connecting part and is used to install the connection terminal of the motor, and the plastic packaging part is filled between the connecting part, the mounting part and the stator core to plasticize the stator of the motor as a whole.

[0007] By adopting the above technical solution, the connecting part can press and limit the stator core and stator winding of the motor, and the mounting part can connect the motor terminals so that the current output from the stator winding and the stator core can be conducted. In addition, the plastic sealing part can be coated on the surface of the connecting part and the mounting part by injection molding, which is beneficial to seal and protect both sides of the stator, reduce water seepage when the motor is used outdoors, effectively improve the service life of the outdoor motor, and thus achieve the purpose of extending the service life of the motor.

[0008] Optionally, the connecting portion includes: a first positioning member and a second positioning member, wherein the first positioning member and the second positioning member are respectively located on two sides of the stator core and abut against the stator winding to position the stator core and the stator winding.

[0009] By adopting the above technical solution, the first positioning member and the second positioning member can respectively abut against the two sides of the stator core, and at the same time, the stator winding can be wound and pressed against the outer sides of the first positioning member and the second positioning member, thereby enhancing the overall installation stability of the stator core and the stator winding.

[0010] Optionally, the mounting portion includes: a clamping member and an extending member, wherein the clamping member is arranged on one side of the first positioning member and abuts against the stator core, and the extending member is arranged on one side of the clamping member and is used to install the terminal of the motor so that the current of the motor stator can be stably extracted.

[0011] By adopting the above technical solution, the clamping piece can be pressed against the side wall of the stator core, which is beneficial to enhancing the installation stability of the stator core, and the extension piece can be connected to the connection terminal of the motor.

[0012] Optionally, the plastic sealing part includes: a first covering part and a second covering part, the first covering part is injection molded on the outside of the first positioning part, and the second covering part is injection molded on the outside of the second positioning part, so as to position and protect both sides of the stator of the motor by the first covering part and the second covering part.

[0013] By adopting the above technical solution, the first covering member and the second covering member can respectively protect and seal the surfaces of the first positioning member and the second positioning member, thereby effectively enhancing the sealing performance of the entire motor stator.

[0014] Optionally, the plastic sealing part further includes: a third covering member, wherein the third covering member is injection molded on the surface of the extension member, so as to position and protect the extension member through the third covering member.

[0015] By adopting the above technical solution, the third covering member can position and protect the extension member, thereby effectively improving the stability of the extension member setting, and at the same time better enhancing the positioning and installation of the motor terminal.

[0016] Optionally, the first covering member and the second covering member both extend to the middle of the stator core and are connected to each other so as to be filled between adjacent stator cores by injection molding.

[0017] By adopting the above technical solution, the connection between the first covering member and the second covering member can be improved, so that the plastic sealing part can fill the gap between adjacent stator cores, thereby better enhancing the sealing and waterproof properties of the stator.

[0018] Optionally, the side wall of the second covering member is provided with a limiting member that abuts against the side wall of the stator core.

[0019] By adopting the above technical solution, the limiting member can abut against the other side of the stator core, so that the positioning and protection effect of the stator core can be further enhanced through the mutual cooperation with the abutting member.

[0020] Optionally, the plastic sealing part is made of thermally conductive resin.

[0021] By adopting the above technical solution, the plastic sealing part made of thermally conductive resin material can effectively improve the heat dissipation performance of the motor and reduce the impact on the service life of the motor due to internal overheating.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The stator core and stator winding of the motor can be tightly limited by the connection part, and the installation part can connect the motor terminals so that the current output from the stator winding and the stator core can be conducted. In addition, the plastic sealing part can be coated on the surface of the connection part and the installation part by injection molding, which is conducive to sealing and protecting both sides of the stator, reducing the water seepage of the motor when it is used outdoors, effectively improving the service life of the outdoor motor, and thus achieving the purpose of extending the service life of the motor;

[0024] 2. The first positioning member and the second positioning member can respectively abut the two sides of the stator core, and at the same time, the stator winding can be wound and pressed against the outer sides of the first positioning member and the second positioning member, thereby enhancing the overall installation stability of the stator core and the stator winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the stator plastic packaging structure of the embodiment of the present application;

[0026] Figure 2 It is a partial structural schematic diagram of the stator plastic packaging structure of the embodiment of the present application;

[0027] Figure 3 is a schematic diagram of the structure of the first positioning member and the second positioning member in an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the structure of the fixing member of the embodiment of the present application;

[0029] Figure 5 It is a structural schematic diagram of the first positioning member and the second positioning member from another perspective of the embodiment of the present application.

[0030] Explanation of the reference numerals: 1. connecting portion; 11. first positioning member; 111. first insertion strip; 12. second positioning member; 121. second insertion strip; 122. flange; 2. mounting portion; 21. abutment member; 211. reinforcement member; 22. extension member; 221. first protrusion; 222. second protrusion; 223. third protrusion; 23. fixing member; 231. limiting plate; 231a. wiring through hole; 231b. protective ring; 232. pressing block; 233. external connection block; 234. internal connection block; 235. side abutment plate; 3. plastic sealing portion; 31. first covering member; 32. second covering member; 33. third covering member; 34. limiting member; 4. stator core; 5. connection terminal; 6. stator winding. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail. Example

[0032] The present application embodiment discloses a stator plastic packaging structure. Figure 1-2 The stator plastic packaging structure includes a connection part 1 and a mounting part 2. The connection part 1 is mounted on the outer surface of the stator core 4, and the mounting part 2 is arranged on the side of the connection part 1 away from the stator core 4. At the same time, in order to improve the waterproofness of the stator as a whole, a plastic packaging part 3 is filled and arranged between the connection part 1, the mounting part 2 and the stator core 4.

[0033] In this embodiment, the connecting portion 1 includes a first positioning member 11 and a second positioning member 12. The first positioning member 11 and the second positioning member 12 are respectively sleeved on both sides of the stator core 4, and at the same time, a first insertion bar 111 is extended from the end of the first positioning member 11, and a second insertion bar 121 is extended from the end of the second positioning member 12 to be slidably plugged with the first insertion bar 111, so that the first positioning member 11 and the second positioning member 12 extend inwardly to the middle of the stator core 4 and are stably connected.

[0034] During installation, the first positioning member 11 and the second positioning member 12 are first respectively sleeved and pressed against the two sides of the outer surface of the stator core 4, and the second insertion strip 121 at the end of the second positioning member 12 and the first insertion strip 111 at the end of the first positioning member 11 are slidably plugged into each other, and then the stator winding 6 is wound around and pressed against the outside of the first positioning member 11 and the second positioning member 12, so as to realize the overall positioning and installation of the stator winding 6 and the stator core 4.

[0035] Reference Figure 2-3In this embodiment, the mounting portion 2 includes a fastening member 21 and an extension member 22. The fastening member 21 is mounted on a side of the first positioning member 11 away from the stator core 4 and is fastened to the side wall of the stator core 4, while the extension member 22 is mounted on a side of the fastening member 21 away from the first positioning member 11.

[0036] Meanwhile, in this embodiment, the extension member 22 includes a first protrusion 221, a second protrusion 222 and a third protrusion 223. The first protrusion 221, the second protrusion 222 and the third protrusion 223 are sequentially distributed on the side wall of the abutting member 21. In addition, the second protrusion 222 penetrates the abutting member 21 and is connected to the stator core 4, while the motor terminal 5 is installed inside the second protrusion 222 and is connected to the stator core 4.

[0037] In addition, a reinforcement piece 211 is provided on the top wall of the clamping piece 21, and the inner side wall of the reinforcement piece 211 is respectively connected to the outer side walls of the first protrusion 221, the second protrusion 222 and the third protrusion 223, thereby being helpful to better improve the overall installation stability of the extension piece 22 and the terminal 5.

[0038] Reference Figure 2-4 In order to further improve the installation stability of the motor terminal 5, a fixing member 23 is installed above three adjacent stator cores 4 connected with the terminal 5, and the fixing member 23 is against the top wall of three adjacent extension members 22.

[0039] In this embodiment, the fixing member 23 includes a limiting plate 231, a pressing block 232, an outer connecting block 233 and an inner connecting block 234. There are three limiting plates 231, which are connected end to end and pressed against the top wall of the extension member 22 through the pressing blocks 232. Three pressing blocks 232 are provided on the inner side of each limiting plate 231, one of which is pressed against the top of the first protrusion 221, and the other two pressing blocks 232 are pressed against the top of the third protrusion 223. At the same time, a side abutment plate 235 is provided on the outer side of each limiting plate 231, which is tightly abutted against the first protrusion 221, the second protrusion 222 and the third protrusion 223 at the corresponding position, and two external connecting blocks 233 and two internal connecting blocks 234 are provided. The two internal connecting blocks 234 and the external connecting blocks 233 are respectively arranged below the inner and outer sides of the side abutment plate 235, and are slidably plugged into a plurality of matching grooves opened on the top of the locking member 21.

[0040] In addition, wiring through holes 231a are provided in the middle of the three limiting plates 231, and protective rings 231b are provided on the outer sides of the corresponding wiring through holes 231a in the middle of the limiting plates 231. During installation, the wiring through holes 231a in the middle of the three limiting plates 231 can be penetrated by the corresponding wiring terminals 5, and the three clamping blocks 232 are respectively abutted against the tops of the first protrusion 221 and the third protrusion 223, and the side abutment plates 235 are abutted against the outer side walls of the extensions. At the same time, the outer connection blocks 233 and the inner connection blocks 234 under the three side abutment plates 235 are respectively slidably inserted into the multiple matching grooves at the corresponding positions on the top of the abutment member 21, so as to further stabilize the installation of the motor terminal 5.

[0041] Reference Figure 1-3 5. In this embodiment, the plastic sealing part 3 includes a first covering member 31 and a second covering member 32. The first covering member 31 is injection molded on the outer surface of the first positioning member 11, and the second covering member 32 is injection molded on the outer surface of the second positioning member 12, so that the first covering member 31 and the second covering member 32 are used to seal and protect both sides of the stator, effectively improving the overall waterproofness of the motor stator. In addition, in order to increase the connection strength between the second covering member 32 and the second positioning member 12, a plurality of convex edges 122 are provided on the outer wall of the second positioning member 12.

[0042] In addition, in order to better improve the sealing performance of the stator, in this embodiment, the plastic package also includes a third covering member 33. The third covering member 33 is injection molded on the outside of the mounting portion 2, so as to better improve the sealing and waterproof performance of the extension member 22 as a whole, and can also help to enhance the overall stability of the extension member 22 and the terminal 5. At the same time, in this embodiment, the first covering member 31, the second covering member 32 and the third covering member 33 are all polyetheretherketone resin, so as to achieve the purpose of improving the thermal conductivity of the motor.

[0043] Reference Figure 1-3 In order to better improve the sealing performance of the overall stator structure, the first covering member 31 and the second covering member 32 are both extended to the middle of the stator core 4, and the first covering member 31 and the second covering member 32 are injection molded and filled in the middle of the stator core 4 to achieve the purpose of interconnecting adjacent stator cores 4, which is beneficial to improving the stability and waterproofness of the overall stator structure.

[0044] Working principle: During installation, first connect the multiple stator cores 4 of the motor end to end for splicing and installation, then slide the first positioning member 11 and the second positioning member 12 into the stator core 4 from both sides and press against the multiple inner walls of the stator core 4, so that the first insertion strip 111 at the end of the first positioning member 11 and the second insertion strip 121 at the end of the second positioning member 12 are plugged and matched with each other;

[0045] Then, the stator winding 6 is wound around and pressed against the outer walls of the first positioning member 11 and the second positioning member 12, and the corresponding motor terminal 5 is inserted into the three wiring through holes 231a at the corresponding positions, and the terminal 5 is connected to the stator core 4 inside the motor. Finally, the assembled stator structure is injection molded to form a plastic sealing part 3 of the first covering member 31, the second covering member 32 and the third covering member 33 on both sides and inside of the stator, thereby effectively enhancing the outdoor waterproof performance of the existing motor and achieving the purpose of prolonging the service life of the outdoor motor.

[0046] 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.

Claims

1. A stator plastic packaging structure, characterized in that: include: A connecting portion (1), a mounting portion (2) and a plastic sealing portion (3), wherein the connecting portion (1) is used to be connected to a stator core (4), the mounting portion (2) is arranged on the connecting portion (1) and is used to install a connection terminal (5) of a motor, and the plastic sealing portion (3) is filled between the connecting portion (1), the mounting portion (2) and the stator core (4) to plastic-coat the stator of the motor as a whole.

2. The stator plastic packaging structure according to claim 1, characterized in that: The connecting portion (1) comprises: a first positioning member (11) and a second positioning member (12), wherein the first positioning member (11) and the second positioning member (12) are respectively located on two sides of the stator core (4) and abut against the stator winding (6) so as to position the stator core (4) and the stator winding (6).

3. A stator plastic packaging structure according to claim 2, characterized in that: The mounting portion (2) comprises: a pressing member (21) and an extending member (22); the pressing member (21) is arranged on one side of the first positioning member (11) and abuts against the stator core (4); and the extending member (22) is arranged on one side of the pressing member (21) and is used to mount a connection terminal (5) of the motor.

4. A stator plastic packaging structure according to any one of claims 2-3, characterized in that: The plastic sealing part (3) comprises: a first covering part (31) and a second covering part (32), wherein the first covering part (31) is injection-molded on the outside of the first positioning part (11), and the second covering part (32) is injection-molded on the outside of the second positioning part (12), so that the first covering part (31) and the second covering part (32) are used to position and protect both sides of the stator of the motor.

5. The stator plastic packaging structure according to claim 4, characterized in that: The plastic sealing portion (3) further comprises: a third covering piece (33), wherein the third covering piece (33) is injection-molded on the surface of the extension piece (22), so as to position and protect the extension piece (22) through the third covering piece (33).

6. The stator plastic packaging structure according to claim 4, characterized in that: The first covering member (31) and the second covering member (32) both extend to the middle of the stator core (4) and are connected to each other so as to be filled between adjacent stator cores (4) by injection molding.

7. The stator plastic packaging structure according to claim 4, characterized in that: The side wall of the second covering member (32) is provided with a limiting member (34) which abuts against the side wall of the stator core (4).

8. The stator plastic packaging structure according to claim 1, characterized in that: The plastic sealing part (3) is made of heat-conducting resin.

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