A motor end cover, a stator assembly, a plastic-sealed motor and an air conditioning system

Abstract

The present application relates to a kind of motor end cover, stator assembly, plastic package motor and air conditioning system, belong to motor technical field, the motor end cover includes control panel and wrapping shell, wrapping shell is thermoplastic and is wrapped in the outside of control panel, wrapping shell is equipped with the first conductive sheet of with control panel interface conduction, because of the wrapping protection of wrapping shell, control panel is not failure in the process of use because of the erosion of environment, so the service life of control panel is longer, the structure of entire motor end cover is more compact;The above-mentioned stator assembly uses the above-mentioned motor end cover, and the stator assembly includes injection molded stator, injection molded stator is equipped with conductor, when motor end cover is installed in the end cover installation port of injection molded stator, conductor and the first conductive sheet interface conduction, the above-mentioned plastic package motor uses the above-mentioned stator assembly, the above-mentioned air conditioning system uses the above-mentioned plastic package motor, and the stator assembly, plastic package motor and air conditioning system all have the advantages that service life is longer.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric machines, in particular to an electric machine end cover, a stator assembly, a plastic-sealed electric machine and an air conditioning system. BACKGROUND

[0002] At present, the air conditioner electric machine is used to deal with the heat exchange and heat dissipation of the condenser. If the electric machine is placed outdoors, it will be subjected to the invasion of rain, salt mist, corrosion and condensate water and the like. Therefore, the internal part of the electric machine needs to reach an insulation level of IP44 or above to meet the long-term requirements. At present, the commonly used electric machine is assembled by using a control panel and an iron shell end cover. The control panel is mounted on the iron shell end cover. Due to the influence of the environment, the iron shell electric machine will be corroded and aged. After a long time, it cannot meet the requirements of the insulation level of the electric machine, so as to cause the control panel to be corroded by the environment and the insulation to be aged, and the control panel to be corroded by foreign matters and the like. Finally, the control panel fails to function, resulting in the burning of the electric machine. SUMMARY

[0003] The present application provides an electric machine end cover, which is used to solve the technical problem that the iron electric machine end cover in the prior art is easily corroded by the environment for a long time, causing the control panel mounted thereon to fail.

[0004] The present application is implemented by the following technical scheme: an electric machine end cover, comprising a control panel and a wrapping shell, the wrapping shell is thermoplastically formed and wrapped outside the control panel, a first conductive sheet is arranged on the outer wall of the wrapping shell, and the first conductive sheet is in conductive connection with the control panel.

[0005] Further, in order to better implement the present application, the first conductive sheet is attached to the side wall of the wrapping shell, and one end of the first conductive sheet extends into the wrapping shell and is in connection with the control panel.

[0006] Further, in order to better implement the present application, a protrusion is arranged on the side wall of the wrapping shell, and the first conductive sheet is attached to the surface of the protrusion.

[0007] Further, in order to better implement the present application, a bearing chamber and an annular wall body are arranged on the wrapping shell, and the annular wall body is sleeved outside the bearing chamber.

[0008] The present application also provides a stator assembly, which comprises an injection molded stator and the above-mentioned electric machine end cover. The injection molded stator has an end cover mounting port and a conductive body arranged at the end cover mounting port and used to supply power to the injection molded stator. The wrapping shell is sealingly mounted at the end cover mounting port, and the conductive body is in conductive connection with the first conductive sheet.

[0009] Further, in order to better realize the present application, the first conductive sheet is attached to the side wall of the wrapping shell and one end of the first conductive sheet extends into the wrapping shell and contacts the control board, the conductive body is a second conductive sheet arranged on the inner wall of the end cover mounting port, and the second conductive sheet is in close contact with the first conductive sheet.

[0010] Further, in order to better realize the present application, the side wall of the wrapping shell is provided with a protrusion, the first conductive sheet is attached to the surface of the protrusion, the end cover mounting port is provided with a groove, the second conductive sheet is arranged in the groove, and the protrusion is embedded in the groove.

[0011] Further, in order to better realize the present application, the wrapping shell is provided with a bearing chamber and an annular wall body, and the annular wall body is sleeved outside the bearing chamber.

[0012] The present application also provides a plastic-encapsulated motor which adopts the plastic-encapsulated stator.

[0013] The present application also provides an air conditioning system which adopts the plastic-encapsulated motor.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] (1) The motor end cover provided by the present application comprises a control board and a wrapping shell, the wrapping shell is formed by hot plastic molding, the control board is wrapped in the wrapping shell, the wrapping shell is provided with a first conductive sheet which is in conductive contact with the control board inside the wrapping shell, and the wrapping shell completely wraps the control board. The control board is electrically connected with the outside through the first conductive sheet arranged on the wrapping shell. At this time, the entire wrapping shell and the control board together form the motor end cover. Due to the wrapping protection of the wrapping shell, the control board will hardly fail due to environmental erosion during use, so the service life of the control board is longer, and the entire motor end cover also has the advantage of compact structure.

[0016] (2) The stator assembly provided by the present application comprises the above-mentioned motor end cover and an injection-molded stator. The injection-molded stator has an end cover mounting port and a conductive body arranged at the end cover mounting port for supplying power to the injection-molded stator. The motor end cover composed of the wrapping shell and the control board is mounted at the end cover mounting port and seals the end cover mounting port. The first conductive sheet is in conductive contact with the conductive body on the injection-molded stator. The stator assembly provided by the present application has the advantage of longer service life, and the control board and the injection-molded stator do not need to be connected by wires. The electrical connection between the two can be achieved by simply contacting the conductive body with the first conductive sheet, so the assembly process is simpler.

[0017] (3) The present application also provides a plastic-encapsulated motor which adopts the above-mentioned stator assembly, so the plastic-encapsulated motor also has the advantage of longer service life.

[0018] (4) The air conditioning system also has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 is a structural schematic diagram of the motor end cover in the present application;

[0021] Figure 2 is a sectional view schematic diagram of the motor end cover in the present application;

[0022] Figure 3 is a structural schematic diagram of the stator assembly in the present application;

[0023] Figure 4 is a sectional view schematic diagram of the stator assembly in the present application;

[0024] Figure 5 is a structural schematic diagram of the injection molded stator in the present application.

[0025] In the drawings:

[0026] 1-motor end cover; 2-control panel; 3-wrapping shell; 4-first conductive sheet; 5-bump; 6-bearing chamber; 7-annular wall body; 8-injection molded stator; 9-second conductive sheet; 10-groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0028] Embodiment 1:

[0029] The motor end cover 1 provided by the embodiment comprises a control board 2 and a wrapping shell 3, the wrapping shell 3 wraps the control board 2, and the wrapping shell 3 in the embodiment is made of an insulating hard material by hot plastic forming, and the insulating hard material is plastic. That is, the motor end cover 1 is composed of the wrapping shell 3 and the control board 2 which is plastic-wrapped in the wrapping shell 3, and the shapes of the motor end cover 1 and the control board 2 can be set according to the situation and are not limited to circular, square or semicircular shapes.

[0030] A first conductive sheet 4 is arranged on the outer wall of the wrapping shell 3, the first conductive sheet 4 is in contact with the control board 2 wrapped in the wrapping shell 3 and is conductive, so as to serve as an armature structure for electrically connecting the control board 2 with the outside.

[0031] With the above structure, the motor end cover 1 provided by the embodiment is plastic-wrapped with the control board 2 in the wrapping shell 3, so that the control board 2 is hardly affected by the external environment, thereby the control board 2 will not fail due to environmental erosion during use, and thus has a longer service life.

[0032] In addition, the control board 2 in the embodiment is actually a control device, and the first conductive sheet 4 is actually an output end of the control board 2, and an armature structure for inputting the control board 2 is further arranged on the wrapping shell 3.

[0033] Embodiment 2

[0034] The first conductive sheet 4 in the embodiment is attached to the side wall of the wrapping shell 3 and one end of the first conductive sheet 4 extends into the wrapping shell 3 and is in contact with the control board 2. During use, the first conductive sheet 4 is only required to be electrically connected with the outside, so as to achieve the purpose of electrically connecting the control board 2 in the embodiment with the external circuit. Compared with the structure of electrically connecting the external circuit and the control board together by using a wire in the prior art, the structure has the advantage of more compact structure.

[0035] As a more preferred embodiment, the motor end cover 1 provided by the embodiment needs to be installed on a motor, a protrusion 5 is arranged on the side wall of the wrapping shell 3 of the motor end cover 1, so as to position and limit the motor end cover 1 during installation, and the contact area between the motor end cover 1 and the installation position can be increased. In addition, the first conductive sheet 4 is attached to the surface of the protrusion 5.

[0036] Embodiment 3

[0037] As a more optimal implementation of the above embodiment, the motor end cover 1 of the present embodiment is integrally thermoplastic molded with a bearing chamber 6 and an annular wall body 7 on the wrapping shell 3. The annular wall body 7 is sleeved outside the bearing chamber 6. The bearing chamber 6 is used for installing bearings. The annular wall body 7 is provided to thicken the side wall of the bearing chamber 6, facilitate stress decomposition of the side wall of the bearing chamber 8, and relieve the pressure of the bearing chamber 6 caused by long-term high-speed rotation of the motor.

[0038] Embodiment 4:

[0039] The present embodiment provides a stator assembly, which comprises a motor terminal 1 and an injection molded stator 8.

[0040] The motor end cover 1 comprises an insulating hard material thermoplastic molded wrapping shell 3 and a control panel 2 wrapped in the wrapping shell 3. The insulating hard material is plastic. Thus, the control panel 2 is wrapped and protected by the wrapping shell 3, and the external environment has little effect on the control panel 2, so that the control panel 2 will not fail due to environmental erosion during use, and thus has a longer service life. A first conductive sheet 4 electrically connected to the control panel 2 is arranged on the side wall of the wrapping shell 2 to electrically connect the control panel 2 to the outside.

[0041] The injection molded stator 8 is injection molded from a wire-wound stator and has an end cover mounting port. The end cover mounting port is a notch structure. The injection molded stator 8 also has an electrically conductive body arranged at the end cover mounting port to supply power to the injection molded stator 8. The motor end cover 1 composed of the wrapping shell 3 and the control panel 2 is sealingly mounted at the end cover mounting port. Specifically, the wrapping shell 3 is mounted at the end cover mounting port by interference fit to achieve sealing and provide sufficient pulling force for the motor end cover 1 to prevent the motor end cover 1 from falling off during use. The electrically conductive body is in electrical contact with the first conductive sheet 4 on the motor end cover 1.

[0042] The stator assembly has the advantages that the motor end cover 1 can be more stably mounted on the injection molded stator 8, and the control panel 2 is not eroded by the environment due to the protection of the wrapping shell 3, so that the service life of the control panel 2 is longer, and thus the service life of the stator assembly is longer. Moreover, when the motor end cover 1 is mounted, the first conductive sheet 4 only needs to be in contact with the electrically conductive body to achieve electrical connection between the control panel 2 and the injection molded stator 8, without the need for wiring. Therefore, the stator assembly has the advantages of compact structure and convenient assembly.

[0043] Embodiment 5:

[0044] As a specific implementation of the embodiment 4, the first conductive sheet 4 on the motor end cover 1 is attached to the side wall of the wrapping shell 3 and one end of the first conductive sheet 4 extends into the wrapping shell 3 and is connected with the control board 2, that is, the first conductive sheet 4 is electrically connected with the control board 2. The conductive body used on the injection molded stator 8 is the second conductive sheet 9, and the second conductive sheet 9 is attached to the inner wall of the end cover mounting port.

[0045] When the motor end cover 1 is mounted at the end cover mounting port with interference, the first conductive sheet 4 and the second conductive sheet 9 are tightly attached and conductive. By using the interference fit between the motor end cover 1 and the side wall of the end cover mounting port, the connection between the first conductive sheet 4 and the second conductive sheet 9 is more stable.

[0046] With this structure, the stator assembly provided in the embodiment does not need wiring when assembled, only needs to align the positions of the first conductive sheet 4 and the second conductive sheet 9, and then press the motor end cover 1 into the end cover mounting port, so the structure is more compact, and the electrical connection between the first conductive sheet 4 and the second conductive sheet 9 is more stable.

[0047] Embodiment 6:

[0048] As a more optimal implementation of the embodiment 5, the side wall of the wrapping shell 3 in the embodiment is provided with a protrusion 5, and the side wall at the end cover mounting port is provided with a groove 10. When the motor end cover 1 is mounted at the end cover mounting port with interference, the protrusion 5 is mounted in the groove 10 with interference, thereby increasing the interference contact area between the motor end cover 1 and the injection molded stator 8, and further enhancing the stability of the installation of the motor end cover 1. The first conductive sheet 4 is attached to the surface of the protrusion 5, and the second conductive sheet 9 is arranged in the groove 10. When the protrusion 5 is mounted in the groove 10 with interference, the second conductive sheet 9 is just connected with the first conductive sheet 4. At this time, the cooperation of the protrusion 5 and the groove 10 can also position the connection between the first conductive sheet 4 and the second conductive sheet 9. When assembled, the motor end cover 1 does not need to be positioned by an additional process, thereby simplifying the assembly process.

[0049] Embodiment 7:

[0050] Based on the embodiments 4, 5 and 6, the embodiment is further improved. The stator assembly provided in the embodiment is provided with a bearing chamber 6 and an annular wall body 7 on the wrapping shell 3 of the motor end cover 1. The annular wall body 7 is sleeved outside the bearing chamber 6. The bearing chamber 6 is used for mounting the bearing of the stator assembly. The annular wall body 7 is arranged to thicken the side wall of the bearing chamber 6, so as to facilitate stress decomposition of the side wall of the bearing chamber 6 and relieve the pressure of the bearing chamber 6 due to long-term high-speed rotation of the stator assembly.

[0051] Embodiment 8:

[0052] The embodiment provides a plastic-sealed motor, which adopts the stator assembly, and thus has the advantage of longer service life.

[0053] Embodiment 9:

[0054] The embodiment provides an air conditioning system, which adopts the plastic-sealed motor, and thus has the advantage of longer service life.

[0055] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, and all the changes or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A stator assembly, characterized in that: The motor comprises an injection-molded stator and a motor end cover, wherein the motor end cover comprises a control board and a wrapping shell, wherein the wrapping shell is thermoplastic-molded and wrapped around the control board, and a first conductive sheet is provided on the outer wall of the wrapping shell, and the first conductive sheet is conductively connected to the control board; The first conductive sheet is attached to the side wall of the encapsulating shell, and one end of the first conductive sheet extends into the encapsulating shell and connects to the control board; the first conductive sheet is electrically connected to the outside world, thereby electrically connecting the control board to the external circuit; The injection molded stator has an end cover mounting opening and a conductor provided at the end cover mounting opening and used to supply power to the injection molded stator, the wrapping shell is sealed and installed at the end cover mounting opening, and the conductor is in contact with the first conductive sheet for electrical conduction; The first conductive sheet is attached to the side wall of the wrapping shell, and one end of the first conductive sheet extends into the wrapping shell and is connected to the control board. The conductor is a second conductive sheet provided on the inner wall of the end cover mounting opening, and the second conductive sheet is in close contact with the first conductive sheet. A protrusion is provided on the side wall of the wrapping shell, the first conductive sheet is attached to the surface of the protrusion, a groove is provided at the end cover mounting opening, the second conductive sheet is provided in the groove, and the protrusion is embedded in the groove; when the protrusion is installed in the groove with an interference fit, the second conductive sheet is just in contact with the first conductive sheet.

2. A stator assembly according to claim 1, characterized in that: The wrapping shell is provided with a bearing chamber and an annular wall body, and the annular wall body is sleeved outside the bearing chamber.

3. A plastic-encapsulated motor, characterized in that: Comprising the stator assembly according to claim 1 or 2.

4. An air conditioning system, characterized in that: Including the plastic-encapsulated motor as described in claim 3.

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