CN211351879U - Plastic package motor end cover and plastic package motor - Google Patents

Abstract

The utility model discloses a plastic envelope motor end cover and plastic envelope motor, it includes: the device comprises a shell, wherein a containing cavity with an opening is arranged in the shell; the rotor assembly mainly comprises a rotating shaft and a rotor core, the rotor core is sleeved on the periphery of the rotating shaft, and the rotating shaft is rotatably arranged in the shell and extends to the outside of the shell; the end cover is arranged at the opening, and the rotating shaft is movably arranged on the end cover; and the plastic packaging part is arranged on the outer wall of the end cover, and the end cover is embedded in the plastic packaging part. The plastic package part is arranged on the outer wall of the end cover, so that the opening is sealed by the combination of the end cover and the plastic package part. Because the plastic package portion shutoff is uncovered, consequently the end cover need only be connected with the rotor subassembly with uncovered edge butt, therefore the material thickness size of end cover can be dwindled to reduce the material that the preparation end cover needs to be used, and then reduce cost.

Description

Plastic package motor end cover and plastic package motor

Technical Field

The utility model relates to a motor field, in particular to plastic envelope motor end cover and plastic envelope motor.

Background

The plastic package motor is formed by integrally packaging a stator core, a winding and the like of the motor by using a molding compound by adopting a molding compound packaging technology, and is generally applied to household appliances such as air conditioners, dust collectors, oil suction machines, washing machines and the like. The plastic package motor is developed and produced in China and abroad, and the plastic package motor is obviously superior to a metal shell motor with the same parameters in the aspects of noise performance, temperature rise performance and the like.

The structure of the traditional plastic package motor is shown as the attached figure 1: the rear end cover 210 and the housing 100 are integrally formed, an installation cavity with an opening is arranged in the housing 100, the rotor assembly 500 is arranged in the installation cavity, and finally the front end cover 220 is pressed into the housing 100 to complete the assembly of the whole motor. The front end cover 220 and the rear end cover 210 of the conventional motor are both made of SPCC plates, i.e., cold rolled carbon steel plates, and have the disadvantage of high cost because the thicknesses and sizes are generally large in order to ensure the strength.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a plastic envelope motor can reduce the material cost of end cover.

According to the utility model discloses a plastic envelope motor of first aspect embodiment, include: an end cap body; the plastic package portion is wrapped on the outer wall of the end cover body and can seal an opening of the mounting cavity, and the end cover body is separated from the shell relatively through the plastic package portion.

According to the utility model discloses plastic envelope motor has following beneficial effect at least: the mounting cavity is sealed and sealed through the plastic sealing part, so that the size of the end cover body can be smaller than that of an end cover in the original sealing and sealing mode, and the cost for manufacturing the end cover body is saved. Meanwhile, the plastic package part can enable the end cover body to have enough strength after being reduced, so that the service life of the end cover body is prevented from being shortened.

According to some embodiments of the utility model, the plastic envelope portion is made by plastic material, and the outer wall of end cover body is partly embedded into the plastic envelope portion at least.

According to some embodiments of the utility model, plastic envelope portion and casing formula structure as an organic whole.

According to some embodiments of the utility model, be provided with the bearing room on the end cover body, bearing room and installation cavity intercommunication.

According to some embodiments of the utility model, be provided with the flange in the plastic envelope portion, the opening part of installation cavity is provided with the step position, and the flange is shelved on the step position.

According to the utility model discloses a some embodiments all are equipped with the through-hole, two in end cover body and the plastic envelope portion the through-hole size is the same and be located same central line.

According to some embodiments of the invention, at least part of the flange is embedded into the plastic encapsulation.

According to the utility model discloses a second aspect provides a plastic envelope motor, including above arbitrary plastic envelope motor end cover.

According to the utility model discloses plastic envelope motor has following beneficial effect at least: the mounting cavity is sealed and sealed through the plastic sealing part, so that the size of the end cover body can be smaller than that of an end cover in the original sealing and sealing mode, and the cost for manufacturing the end cover body is saved. Meanwhile, the plastic package part can have enough strength after the end cover body is reduced, so that the service life of the end cover body is prevented from being shortened.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a conventional plastic package motor;

fig. 2 is a schematic view of a plastic package motor according to an embodiment of the present invention;

fig. 3 is a schematic view of a plastic sealing part of the plastic sealing motor in fig. 2;

fig. 4 is a schematic cross-sectional view of the plastic encapsulated motor of fig. 2;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

reference numerals: 100 is a shell, 200 is an end cover body, 210 is a rear end cover, 220 is a front end cover, 300 is a plastic package part, 400 is a stator component, 500 is a rotor component, 510 is a bearing, 530 is a rotating shaft, and 540 is an iron core.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 2, a plastic envelope motor end cover, includes: an end cap body 200; the plastic package part 300 is wrapped on the outer wall of the end cover body 200, the plastic package part 300 can seal the opening of the installation cavity, and the end cover body 200 is relatively separated from the shell 100 through the plastic package part 300. The mounting cavity is sealed and sealed through the plastic sealing part 300, so that the size of the end cover body 200 can be smaller than that of an end cover in an original sealing mode, and the cost for manufacturing the end cover body 200 is saved. Meanwhile, the plastic package part 300 may have sufficient strength even after the end cap body 200 is reduced, thereby preventing the service life of the end cap body 200 from being shortened.

In certain embodiments, referring to fig. 3, the plastic encasement 300 is made of a plastic material, and a portion of the outer wall of the end cap body 200 is embedded in the plastic encasement 300. The plastic package part 300 is directly processed through injection molding, so that the plastic package part 300 and the end cover body 200 are directly produced into an integrated structure. The molding mode of the plastic package part 300 not only has the advantages of simple processing and quick molding, but also can ensure stable connection between the plastic package part 300 and the end cover body 200.

In some embodiments, referring to fig. 4 and 5, the plastic sealing part 300 is an integral structure with the housing 100. The housing 100 is usually directly molded by injection molding, and in the injection molding process, the end cap body 200 can be placed at the opening position of the mounting cavity, so that the housing 100 is directly fixed relative to the end cap body 200 during molding, and the plastic package portion 300 is formed at the contact portion between the housing 100 and the end cap body 200.

In some embodiments, referring to fig. 3, a flange is disposed on the plastic package portion 300, a step is disposed at an opening of the mounting cavity, and the flange rests on the step. The cooperation of step position and flange can provide location and support for between the opening of plastic envelope portion 300 and installation cavity for plastic envelope portion 300 can be accurate, stable setting in uncovered department.

In some embodiments, the opening of the mounting cavity is disposed at the front portion of the casing 100, the number of the end cap bodies 200 is two, and the two end cap bodies are respectively a front end cap 220 and a rear end cap 210, the plastic package portion 300 is wrapped around the front end cap 220 and disposed at the opening, and the plastic package portion 300 on the periphery of the rear end cap 210 is integrally formed with the bottom of the casing 100.

Referring to fig. 4, the embodiment of the utility model also provides a plastic package motor, including the plastic package motor end cover of above arbitrary. The plastic package part 300 is arranged on the outer wall of the end cover body 200, so that the open port is sealed by the combination of the end cover body 200 and the plastic package part 300. Since the plastic sealing part 300 seals the opening, the end cap body 200 is not required to abut against the edge of the opening and is only required to be connected with the rotor assembly 500, so that the size of the end cap body 200 can be reduced, the number of materials required for manufacturing the end cap body 200 is reduced, and the cost is reduced.

In some embodiments, referring to fig. 4, the rotor assembly 500 is disposed in the casing 100, the rotor assembly 500 is mainly composed of a rotating shaft 530 and a core 540, the core 540 is sleeved on the outer circumference of the rotating shaft 530, and the rotating shaft 530 is rotatably connected to the end cap body 200. When the rotation shaft 530 rotates, the reaction force caused by the rotation of the rotation shaft 530 is received by the end cap body 200. Since the cap body 200 is made of a hard material, a reaction force generated when the rotation shaft 530 rotates can be stably received.

In some embodiments, referring to fig. 3, through holes are formed in both the front cover 220 and the plastic package portion 300, center lines of the two through holes are the same and have the same size, and the rotating shaft 530 passes through the two through holes and extends to the outside of the housing 100. The rotation shaft 530 needs to extend to the outside of the housing 100 in order to be connected with an external member to be driven. The through hole can provide an exit for the protrusion of the rotation shaft 530, so that the rotation shaft 530 can protrude out of the housing 100.

In some embodiments, referring to fig. 4, the outer circumference of the rotating shaft 530 is sleeved with a bearing 510, and the bearing 510 is mounted on the rear cover 210. The bearing 510 not only can provide a positioning point between the rotation shaft 530 and the cap body 200, but also can prevent the rotation shaft 530 from directly rubbing against the rear cap 210 during rotation, thereby causing abrasion.

In some embodiments, referring to fig. 4, the middle of the rear end cap 210 is provided with a bearing chamber in which the bearing 510 is installed. The bearing housing can fix the bearing 510, thereby preventing the rotation of the rotation shaft 530 from driving the bearing 510 to move, and thus ensuring the stability of the rotation shaft 530.

In some embodiments, two bearings 510 are disposed at both ends of the rotation shaft 530, and the iron core 540 is disposed between the two bearings 510. The two bearings 510 can provide a positioning and fixing effect for the rotation shaft 530 from both ends, thereby ensuring more stable rotation of the rotation shaft 530.

In some embodiments, the stator assembly 400 is disposed in the casing 100, and the stator assembly 400 is directly molded with the casing 100 through injection molding.

In some embodiments, a red steel washer is disposed between the bearing 510 and the rear end cap 210, and a wave washer is disposed between the bearing 510 and the front end cap 220.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. The utility model provides a plastic envelope motor end cover which characterized in that includes:

an end cap body (200);

the plastic package part (300) is coated on the outer wall of the end cover body (200), the plastic package part (300) can seal an opening of an installation cavity of the motor shell, and the maximum width dimension of the end cover body (200) is smaller than the minimum width dimension of the installation cavity.

2. The plastic package motor end cap of claim 1, wherein:

the plastic packaging part (300) is made of a plastic material, and at least part of the outer wall of the end cover body (200) is embedded into the plastic packaging part (300).

3. The plastic package motor end cap of claim 2, wherein:

the plastic package part (300) and the motor shell are of an integrated structure.

4. The plastic package motor end cap of claim 3, wherein:

the end cover body (200) is provided with a bearing chamber, and the bearing chamber is communicated with the installation cavity.

5. The plastic package motor end cap of claim 2, wherein:

the plastic package part (300) is provided with a flange, a step position is arranged at the opening of the mounting cavity, and the flange is placed on the step position.

6. The plastic package motor end cap of claim 5, wherein:

the end cover body (200) and the plastic package part (300) are provided with through holes, and the through holes are the same in size and are located on the same central line.

7. The plastic package motor end cap of claim 5, wherein:

at least part of the flange is embedded into the plastic package part (300).

8. A plastic package motor, characterized in that, includes the plastic package motor end cover of any claim 1 to 7.

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