CN115037073A

CN115037073A - Magnetic shoe interpolation type plastic package permanent magnet rotor

Info

Publication number: CN115037073A
Application number: CN202210639793.6A
Authority: CN
Inventors: 环剑斌; 董正刚; 张小媛; 邵俊; 李士新; 周杰; 钱峰; 王新龙
Original assignee: Jingjiang Dongsheng Machinery And Electrical Equipment Manufacturing Co ltd
Current assignee: Jingjiang Dongsheng Machinery And Electrical Equipment Manufacturing Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-09

Abstract

The invention discloses a magnetic shoe interpolation type plastic package permanent magnet rotor, which comprises an inner circular hole, a rotor iron core body, a magnetic shoe slot, an iron core rivet buckle, a peripheral fracture, an inner circular iron core supporting piece, a plastic filling hole, a rotating shaft, a plugging plastic body and a magnetic shoe body, wherein the rotor iron core body is arranged at the outer side of the inner circular hole; the invention can be used for making the rotor have easier processing and less investment in a die by arranging the inner circular hole, the rotor iron core body, the magnetic shoe slot, the iron core rivet, the plastic filling hole, the sealing plastic body and the magnetic shoe body, reduces the cost of a single magnetic shoe, ensures that the magnetic shoe is not easy to fall off by plastic sealing and sealing, conveniently removes the repeated dynamic balance adjustment of the plastic sealing materials similar to aluminum rings at two ends of the rotor, realizes the production automation, can be used for facilitating the relative insertion of the magnetic shoes at the same stage when the magnetic shoes are inserted and is convenient for supporting and connecting the magnetic shoes so as to drive components on the surface of the rotating shaft to rotate or run and the like by arranging the peripheral fracture, the inner circular iron core supporting piece and the rotating shaft.

Description

Magnetic shoe interpolation type plastic package permanent magnet rotor

Technical Field

The invention relates to the technical field of direct-current brushless motors, in particular to a magnetic shoe interpolation type plastic package permanent magnet rotor.

Background

The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integration product of a magnetic shoe interpolation type plastic package permanent magnet rotor, the brushless motor is a motor without a brush and a commutator (or a collecting ring), also called a commutator-free motor, and as early as the nineteenth birth of the motor, the generated practical motor is in a brushless form, namely an AC squirrel-cage asynchronous motor, the motor is widely applied, however, the asynchronous motor has many defects which can not be overcome, so that the motor technology is slowly developed, and meanwhile, transistors are born in the future, therefore, the DC motor adopting a transistor commutation circuit to replace the brush and the commutator is suitable for transportation, the novel brushless DC motor is called an electronic commutation type DC motor, and the defects of the first generation brushless motor are overcome.

The brushless DC motor has the advantages of low noise, small vibration, high efficiency, long service life and the like, and the two reasons are mainly the reasonable circuit control and the permanent magnet rotor. Most of traditional permanent magnet rotors adopt surface-mounted ferrite magnetic tiles, and the problems of poor dynamic balance, electric corrosion and the like can occur in the use process.

However, the rotor in the plastic package motor of the existing air conditioner is a surface-mounted rotor, a binding agent is coated between a rotor iron core and a magnetic shoe, a fixing clamp is used for waiting for the solidification of the binding agent, the influence of solidification time is caused, the production is long, the production is inconvenient, and the collision is caused, so that the surface of the magnetic shoe is broken, even the whole magnetic shoe is broken, and the magnetic shoe is influenced by the use environment to cause the risk of falling.

Disclosure of Invention

The invention aims to provide a magnetic shoe interpolation type plastic package permanent magnet rotor, wherein the magnetic shoe is rectangular, the magnetic shoe is easier to process compared with the traditional tile shape, the investment in a die is reduced, the cost of a single magnetic shoe is reduced, the magnetic shoe is not easy to fall off after plastic package sealing, plastic package materials similar to aluminum rings at two ends of the rotor are convenient to perform de-emphasis dynamic balance adjustment, and the production automation is realized to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a plastic package permanent magnet rotor with an inserted magnetic shoe comprises an inner circular hole, a rotor iron core body, a magnetic shoe slot, an iron core rivet fastener, a peripheral fracture, an inner circular iron core support piece, a plastic filling hole, a rotating shaft, a plugging plastic body and a magnetic shoe body.

Preferably, the peripheral fracture is arranged at one end of the inner side of the rotor iron core body, and the peripheral fracture and the rotor iron core body are arranged symmetrically and equidistantly.

Preferably, the inner circle iron core supporting piece is installed at one end of the rotor iron core body, a carrier is installed at one end of the inner circle iron core supporting piece, and the inside of the carrier is installed with the rotating shaft through an inner circle hole.

Preferably, the magnetic shoe body is located inside the rotor core body.

Preferably, one end of the upper surface of the rotating shaft is provided with a limiting groove.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can be used for making the rotor have the advantages of easier processing, less investment in a die, reduced cost of a single magnetic shoe, difficult falling of the magnetic shoe after plastic package sealing, convenient removal of the weight balance adjustment of plastic package materials similar to aluminum rings at two ends of the rotor and realization of production automation by arranging the inner circular hole, the rotor iron core body, the magnetic shoe slot, the iron core rivet buckle, the plastic filling hole, the plugging plastic body and the magnetic shoe body.

2. The invention can be used for facilitating the relative insertion of the magnetic shoes at the same level when the magnetic shoes are inserted, facilitating the supporting connection work of the magnetic shoes and the rotation of the magnetic shoes by arranging the peripheral fractures, the inner circle iron core supporting piece and the rotating shaft, so as to facilitate the rotation or operation of parts on the surface of the rotating shaft.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a rotor according to the present invention;

FIG. 3 is a schematic view of a rotor structure according to the present invention;

FIG. 4 is a schematic cross-sectional view of a rotor according to the present invention.

In the figure: 1. an inner circular hole; 2. a rotor core body; 3. a magnetic shoe slot; 4. riveting the iron core; 5. a peripheral fracture; 6. an inner round iron core support member; 7. filling the hole with plastic; 8. a rotating shaft; 9. plugging the plastic body; 10. a magnetic shoe body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back … …) are provided in embodiments of the present invention. It is only used to explain the relative positional relationship, movement, etc. of the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a magnetic shoe interpolation type plastic sealed permanent magnet rotor, which includes an inner circular hole 1, a rotor core body 2, a magnetic shoe slot 3, an iron core rivet 4, a peripheral fracture 5, an inner circular iron core support 6, a plastic filling hole 7, a rotating shaft 8, a sealing plastic body 9 and a magnetic shoe body 10, wherein the rotor core body 2 is disposed outside the inner circular hole 1,

it should be noted that, as shown in fig. 1, 2, 3 and 4, the magnetic shoe slot 3 is opened on the inner side of the rotor iron core body 2, the iron core rivet 4 is installed on the surface of the rotor iron core body 2, the plastic filling hole 7 is opened on one side of the surface of the rotor iron core body 2, the plugging plastic body 9 is located in the inner cavity of the plastic filling hole 7, the magnetic shoe body 10 is installed inside the magnetic shoe slot 3, the magnetic shoe slot 3 is opened along the outer circumference inside the rotor iron core body 2, magnetic leakage is not avoided, the periphery of the slot is disconnected through the peripheral fracture 5, the inner circumference is as small as possible, the magnetic shoe bodies 10 are inserted relatively at the same level when being inserted, the inner circle of the rotor iron core body 2 is a circular hole larger than the axial diameter of the rotating shaft, the key slot hole is opened along the inner circle circumference, and the torque force between the rotor iron core body 2 and the rotating shaft 8 after plastic sealing is increased.

Wherein, carry out the integral type plastic envelope with plastic envelope mould to rotor iron core body 2, magnetic shoe body 10 and pivot 8 and fix, saved the process of last item, form the structure of similar aluminium ring at the rotor both ends moreover, conveniently do the formula of coming off weight dynamic balance and adjust to realize automation equipment and adjust rotor dynamic balance, because it is embedded, so the rotor does not have the risk of droing.

In addition, magnetic shoe body 10 appearance is the rectangle, it is changeed processing to compare traditional tile shape, drop into the mould less, the cost reduction of monolithic magnetic shoe, magnetic shoe slot 3 is seted up along the outer circumference in rotor metal core 2 is inside, magnetic shoe body 10 is inside rotor metal core 2, through the plastic envelope closure, magnetic shoe body 10 is difficult for droing, the keyway is made to 2 interior round departments of rotor metal core, it is fixed with 8 plastic envelopes of pivot, not through the last item, the riveting technology, the removal of the dead balance is conveniently done to the plastic envelope material of the similar aluminium ring at rotor both ends, realize the production automation.

Preferably, as shown in fig. 1, the peripheral fractures 5 are formed at one end of the inner side of the rotor core body 2, the peripheral fractures 5 and the rotor core body 2 are arranged symmetrically and equidistantly, and the insertion of the magnetic shoe body 10 is facilitated by the formation of the peripheral fractures 5.

In addition, as shown in fig. 1, the inner circular iron core support 6 is installed at one end of the rotor iron core body 2, the carrier is installed at one end of the inner circular iron core support 6, the inside of the carrier is installed with the rotating shaft 8 through the inner circular hole 1, and the inner circular iron core support 6 can be used for supporting and connecting the rotor iron core body 2.

In addition, as shown in fig. 1, 2, 3 and 4, the magnetic shoe body 10 is located inside the rotor core body 2, and can be used to facilitate the operation thereof.

In addition, as shown in fig. 3, a limiting groove is formed in one end of the upper surface of the rotating shaft 8, and the rotating shaft 8 is convenient to mount, take and place by using the limiting groove and is convenient to limit.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the spirit and scope of the present invention;

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a magnetic shoe interpolation formula plastic envelope permanent magnet rotor, includes interior round hole (1), rotor iron core body (2), magnetic shoe slot (3), iron core riveting (4), peripheral fracture (5), interior round core support piece (6), plastics filling hole (7), pivot (8), shutoff plastic body (9) and magnetic shoe body (10), its characterized in that: the rotor iron core body (2) is arranged on the outer side of the inner circular hole (1), the magnetic shoe insertion grooves (3) are formed in the inner side of the rotor iron core body (2), the iron core riveting buckles (4) are arranged on the surface of the rotor iron core body (2), the plastic filling holes (7) are formed in one side of the surface of the rotor iron core body (2), the plugging plastic body (9) is located in the inner cavity of the plastic filling holes (7), and the magnetic shoe body (10) is arranged inside the magnetic shoe insertion grooves (3).

2. The magnetic shoe interpolation type plastic package permanent magnet rotor of claim 1, characterized in that: the periphery fracture (5) are opened in the inboard one end of rotor iron core body (2), be the equidistance symmetry setting between periphery fracture (5) and rotor iron core body (2).

3. The magnetic shoe interpolation type plastic package permanent magnet rotor of claim 1, characterized in that: the inner circle iron core supporting piece (6) is installed at one end of the rotor iron core body (2), a carrier is installed at one end of the inner circle iron core supporting piece (6), and the inside of the carrier is installed with the rotating shaft (8) through the inner circle hole (1).

4. The magnetic shoe interpolation type plastic package permanent magnet rotor of claim 1, characterized in that: the magnetic shoe body (10) is positioned inside the rotor iron core body (2).

5. The magnetic shoe interpolation type plastic package permanent magnet rotor of claim 1, characterized in that: and one end of the upper surface of the rotating shaft (8) is provided with a limiting groove.