Motor end cover, stator assembly, plastic-sealed motor and air conditioning system

Abstract

The present invention relates to a motor end cover, a stator assembly, a plastic-sealed motor and an air-conditioning system, and belongs to the technical field of motors. The motor end cover comprises a control panel and a wrapping shell, wherein the wrapping shell is wrapped around the outside of the control panel, a through hole is provided on the wrapping shell, and a contact point connected to the control panel for electrical conduction is provided in the through hole. The motor end cover of the structure, the wrapping shell wraps the control panel to protect it, so that the control panel will not fail due to environmental erosion, and the structure of the entire motor end cover is more compact; the stator assembly comprises the motor end cover and an injection-molded stator, the injection-molded stator is provided with an end cover mounting port, the wrapping shell is sealed and installed at the end cover mounting port, a conductor is provided at the end cover mounting port, the conductor is plugged into the through hole and connected to the contact point for electrical conduction, the stator assembly of the structure has the advantage of long service life, the plastic-sealed motor adopts the stator assembly, and the air-conditioning system adopts the plastic-sealed motor, so the plastic-sealed motor and the air-conditioning system both have the advantage of long service life.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a motor end cover, a stator assembly, a plastic-sealed motor and an air conditioning system. Background Art

[0002] At present, the air conditioner motor is used to handle the heat exchange and heat dissipation of the condenser. If the motor is outdoors, it will be subjected to environmental damage such as rain, salt spray, corrosion, condensed water, etc. Therefore, the insulation level of the motor must reach IP44 or above to meet the long-term requirements. At present, the commonly used motors are assembled with control panels and iron shell end covers. The control panel is installed on the iron shell end cover. Due to the great influence of environmental damage, the iron shell motor will age and corrode. After a long time, it will not be able to meet the insulation level requirements of the motor, resulting in the control panel being corroded by the environment and the insulation aging, corrosion by foreign matter, and finally the control panel function failure, resulting in the motor burning. Summary of the invention

[0003] The invention provides a motor end cover, which is used to solve the technical problem in the prior art that the iron motor end cover is easily corroded by the environment after long-term use, thus causing the failure of a control panel installed thereon.

[0004] The present invention is implemented by the following technical solutions: a motor end cover, comprising a control board and a wrapping shell, the wrapping shell is thermoplastic-formed and wrapped around the control board, and a through hole is provided on an end wall of one end of the wrapping shell;

[0005] It also includes a contact point, which is placed in the through hole and connected to the control board for electrical conduction.

[0006] Furthermore, in order to better implement the present invention, a protrusion is provided on the side wall of the wrapping shell.

[0007] Furthermore, in order to better realize the present invention, a bearing chamber and an annular wall body are provided on the encapsulating shell, and the annular wall body is sleeved outside the bearing chamber.

[0008] The present invention also provides a stator assembly, including an injection-molded stator and the above-mentioned motor end cover, the injection-molded stator having an end cover mounting opening and a conductor arranged at the end cover mounting opening and used to supply power to the injection-molded stator, the wrapping shell being sealed and installed at the end cover mounting opening, the conductor extending into the through hole and connecting with the contact for conduction.

[0009] Furthermore, in order to better implement the present invention, the conductor includes a column, which is mounted on the injection-molded stator and inserted into the through hole and connected to the contact.

[0010] Furthermore, in order to better realize the present invention, the conductor also includes a spring and a sleeve with one end closed and the other end penetrating, the closed end of the sleeve is fixed to the injection molded stator, the column is inserted into the open end of the sleeve, the spring is arranged in the sleeve and the two ends of the spring are respectively abutted against the closed end of the sleeve and the column.

[0011] Furthermore, in order to better implement the present invention, a protrusion is convexly provided on the side wall of the wrapping shell, and a groove is provided at the end cover installation opening, and the protrusion is embedded in the groove.

[0012] Furthermore, in order to better implement the present invention, the encapsulating shell is provided with a bearing chamber and an annular wall body, and the annular wall body is sleeved outside the bearing chamber.

[0013] The present invention also provides a plastic-encapsulated motor, which adopts the stator assembly.

[0014] The present invention also provides an air conditioning system, which adopts the plastic-sealed motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The motor end cover provided by the present invention comprises a control board and a wrapping shell. The wrapping shell is formed by thermoplastic molding, and the control board is wrapped inside the wrapping shell. A through hole is provided on an end wall of one end of the wrapping shell, and a contact connected to the control board for electrical conduction is provided in the through hole. With this structure, the wrapping shell completely wraps the control board, and the control board is electrically connected to the outside world through the contact in the through hole provided on the end wall of the wrapping shell. At this time, the entire wrapping shell and the control board together constitute the motor end cover. In this way, due to the wrapping protection of the wrapping shell, the control board is almost not corroded by the environment and fails during use, so the service life of the control board is longer, and the entire motor end cover also has the advantage of a compact structure;

[0017] (2) The stator assembly provided by the present invention comprises an injection molded stator and the above-mentioned motor end cover, the injection molded stator having an end cover mounting opening and a conductor arranged at the end cover mounting opening and used to supply power to the injection molded stator, the wrapping shell being sealed and mounted at the end cover mounting opening, the above-mentioned conductor extending into the through hole on the motor end cover and being connected to the contact point therein, and adopting this structure, the control board and the injection molded stator can be electrically connected together by utilizing the contact between the conductor and the contact point, and the wrapping shell of the above-mentioned motor end cover can well protect the control board and prevent the control board from failing due to environmental erosion, so the stator assembly has the advantage of longer service life, and there is no need to connect wires between the control board and the injection molded stator, and the electrical connection between the two can be achieved by only inserting the conductor into the through hole and contacting the contact point, so the assembly process is simpler;

[0018] (3) The present invention 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;

[0019] (4) The present invention also provides an air conditioning system, which adopts the above-mentioned plastic-encapsulated motor, so the air conditioning system also has the advantage of longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the motor end cover in the present invention;

[0022] Figure 2 is a cross-sectional schematic diagram of the motor end cover in the present invention;

[0023] Figure 3 It is a schematic structural diagram of the injection-molded stator in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the conductor in the present invention;

[0025] Figure 5 is a schematic structural diagram of a stator assembly in the present invention;

[0026] Figure 6 It is a cross-sectional schematic diagram of the stator assembly in the present invention.

[0027] In the figure:

[0028] 1-motor end cover; 2-control board; 3-wrapping shell; 4-through hole; 5-contact; 6-bump; 7-bearing chamber; 8-annular wall; 9-injection molded stator; 10-column; 11-spring; 12-sleeve; 13-groove. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] This embodiment provides a motor end cover 1, including a control board 2 and a wrapping shell 3, wherein the wrapping shell 3 is wrapped around the control board 2. It is worth noting that the wrapping shell 3 in this embodiment is thermoplastically formed by an insulating hard material, 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 sealed therein, and the shapes of the motor end cover 1 and the control board 2 can be specifically set according to the situation, and are not limited to circular, square or semicircular.

[0032] A through hole 4 is provided on one end wall of the wrapping shell 3, which also includes a contact. The contact 5 is arranged in the through hole 4 and is electrically connected to the control board 2. In fact, the contact 5 is the external electrical connection point on the control board 2. When in use, it is only necessary to insert the external armature into the through hole 4 and contact and conduct with the contact 5 to achieve the purpose of electrically connecting the control board 2 on the motor end cover 1 to the outside world.

[0033] With the above structure, the motor end cover 1 provided in this embodiment has a control board 2 that is plastic-sealed and wrapped in a package 3, so the external environment has almost no effect on the control board 2, so that the control board 2 will not fail due to environmental erosion during use, and thus has a longer service life.

[0034] In addition, since the control board 2 in this embodiment is actually a control device, and the above-mentioned conductive structure is actually the output end of the control board 2, an armature structure for inputting to the control board 2 is also provided on the above-mentioned wrapping shell 3.

[0035] Embodiment 2:

[0036] This embodiment is a better implementation of embodiment 1. The side wall of the encapsulating shell 3 of the motor end cover 1 in this embodiment is also provided with a protrusion 6, which is used to position and limit the motor end cover 1 when installing the motor, and can increase the contact area between the motor end cover 1 and the installation position, so that the motor end cover 1 can be installed more stably.

[0037] Embodiment 3:

[0038] This embodiment is a better implementation of the above embodiment. In this embodiment, the wrapping shell 3 of the motor end cover 1 is also integrally thermoplastically formed with a bearing chamber 7 and an annular wall body 8. The annular wall body 8 is sleeved outside the bearing chamber 7. The bearing chamber 7 is used to install the bearing. The setting of the annular wall body 8 plays a role in thickening the side wall of the bearing chamber 7, which is convenient for decomposing the stress of the side wall of the bearing chamber 7 and relieving the pressure on the bearing chamber 7 caused by the long-term high-speed rotation of the motor.

[0039] Embodiment 4:

[0040] The present embodiment provides a stator assembly, including an injection molded stator 9 and a motor end cover 1 provided in Embodiment 1. The injection molded stator 9 is injection molded by a winding stator and has an end cover mounting opening, the end cover mounting opening being a notch structure. The injection molded stator 9 also has a conductor, which is arranged at the end cover mounting opening to supply power to the injection molded stator 9. The motor end cover 1 composed of the above-mentioned wrapping shell 3 and the control board 2 is sealed and installed at the end cover mounting opening. Specifically, the above-mentioned wrapping shell 3 is installed at the end cover mounting opening by interference fit to achieve sealing and provide sufficient pulling force to the motor end cover 1 to prevent the motor end cover 1 from falling off from the end cover mounting opening during use.

[0041] With this structure, when the motor end cover 1 and the control board 2 thereon are installed on the injection molded stator 9, no wiring operation is required between the injection molded stator 9 and the control board 2, and the structure is simpler and more compact, and the manufacturing cost is lower. Moreover, due to the protection of the wrapping shell 3, the control board 2 will not be corroded by the environment, so the service life of the control board 2 is longer, and thus the service life of the stator assembly is also longer.

[0042] As a best implementation of this embodiment, the above-mentioned conductor includes a column 10 installed at the end cover installation port of the injection-molded stator 9. The column 10 is a cylinder and also has a conductive function. When the motor end cover 1 is installed at the end cover installation port with interference fit, the above-mentioned column 10 is inserted into the above-mentioned through hole 5 and contacts the above-mentioned contact 5 for electrical conduction.

[0043] Embodiment 5:

[0044] This embodiment is a better implementation of the embodiment 4. The conductor in this embodiment also includes a spring 11 and a sleeve 12 with one end closed and the other end through. The closed end of the sleeve 12 is connected to the injection molded stator 9 and fixed, and the column 10 is inserted into the open end of the sleeve 12. In this way, the column 10 can move axially relative to the sleeve 12, and the spring 11 is arranged in the sleeve 12 and the two ends of the spring 11 are respectively in contact with the closed end of the sleeve 12 and the column 10. With this structure, the elastic force of the spring 11 can ensure that the column 10 can maintain good contact with the contact 5 in the through hole 4 when inserted into the through hole 4, so as to enhance the stability of the conduction.

[0045] Embodiment 6:

[0046] This embodiment is a more preferred implementation of Embodiment 4 and Embodiment 5. In this embodiment, a protrusion 6 is provided on the side wall of the wrapping shell 3 of the motor end cover 1, and a groove 13 is provided at the end cover installation port. The protrusion 6 is embedded in the groove 13, and the fit between the protrusion 6 and the groove wall of the groove 13 is also an interference fit, which can increase the contact area between the motor end cover 1 and the injection molded stator 9 and further enhance the stability of the installation of the motor end cover 1. The positioning and limiting between the groove 13 and the protrusion 6 can position and limit between the column 10 and the through hole 4, so that the installation of the motor end cover 1 is easier.

[0047] Embodiment 7:

[0048] This embodiment is a better implementation of Embodiment 6. In this embodiment, a bearing chamber 7 and an annular wall body 8 are provided on the enclosing shell 3 on the motor end cover 1. The annular wall body 8 is sleeved outside the bearing chamber 7. The bearing chamber 7 is used to install the bearing of the stator assembly. The setting of the annular wall body 8 plays a role in thickening the side wall of the bearing chamber 7, which is convenient for decomposing the stress of the side wall of the bearing chamber 7 and alleviating the pressure on the bearing chamber 7 caused by the long-term high-speed rotation of the stator assembly.

[0049] Embodiment 8:

[0050] This embodiment 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.

[0051] Embodiment 9:

[0052] This embodiment provides an air conditioning system, which adopts the above-mentioned plastic-encapsulated motor, so the air conditioning system has the advantage of longer service life.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A stator assembly, characterized in that: It includes an injection-molded stator and a motor end cover, wherein the motor end cover includes a control board and a wrapping shell, the wrapping shell is thermoplastic-molded and wrapped around the control board, and a through hole is provided on an end wall of one end of the wrapping shell; It also includes a contact point, which is placed in the through hole and connected to the control board for electrical conduction. The contact point is an external electrical connection point on the control board. When in use, the control board on the motor end cover can be electrically connected to the outside world by simply inserting an external armature into the through hole and contacting and conducting with the contact point. The side wall of the wrapping shell is provided with a protrusion; The injection molded stator has an end cover mounting opening and a conductor disposed at the end cover mounting opening and used to supply power to the injection molded stator, the wrapping shell is sealed and mounted at the end cover mounting opening, the conductor extends into the through hole and is connected to the contact point for conduction; The conductor comprises a column, which is mounted on the injection-molded stator and inserted into the through hole and connected to the contact point; The conductor also includes a spring and a sleeve with one end closed and the other end penetrating, the closed end of the sleeve is fixed to the injection molded stator, the column is inserted into the open end of the sleeve, the spring is arranged in the sleeve and the two ends of the spring are respectively in contact with the closed end of the sleeve and the column.

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 stator assembly according to claim 1, characterized in that: A convex block is convexly arranged on the side wall of the wrapping shell, and a groove is arranged at the mounting opening of the end cover, and the convex block is embedded in the groove.

4. A stator assembly according to claim 3, 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.

5. A plastic-encapsulated motor, characterized in that: The invention comprises the stator assembly according to any one of claims 1 to 4.

6. An air conditioning system, characterized in that: Including the plastic-encapsulated motor described in claim 5.

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