KR102125874B1 - Stator and motor including the same - Google Patents

Abstract

The present invention is a divided core assembly including a plurality of divided cores, an upper insulator covering the divided cores, and a lower insulator; And a plurality of coils wound on the plurality of split core assemblies, wherein the upper insulator and the lower insulator start the same stator and a motor including the same.

Description

A stator and a motor including the same STATUS AND MOTOR INCLUDING THE SAME

The present invention relates to a stator of a motor.

A motor is a device that converts electrical energy into rotational energy using the force received by a conductor through which a current flows in a magnetic field. Motors are used in almost all industries, such as various electronic devices, industrial/home appliances, toys, and automobiles.

In particular, in the automotive field, starter motors, radiator fan motors, window brush motors, air conditioning fan motors, fuel pump motors, window shield motors, motors for door look, antenna elevating motors, control motors such as ABS, TCS, and rearview mirrors Very many motors are used, such as motors, motors for angle adjustment of seats, and dual-clutch transmission motors.

Among them, the dual clutch transmission (DCT) is an advanced gearbox in which even gear trains and odd gear trains are separated and connected to two clutches. , Because the shifting time is fast, the shifting feeling is excellent and the efficiency is high.

The dual clutch transmission includes a gear actuator for shifting gears, a clutch actuator for operating the clutch, and a Transmission Control Unit (TCU) for controlling the clutch actuator.

In general, a select motor for providing rotational force to a dual-clutch transmission has an outer shape in a cylindrical shape and a housing cover coupled to an upper portion of the housing to form an outer shape, and a stator is installed inside the housing.

In the center of the stator, a rotor that rotates according to electromagnetic interaction with the stator is installed, and the rotor is rotatably supported by a rotating shaft.

At this time, the stator is manufactured by winding the coils on the divided cores in which the upper and lower insulators are fitted. At this time, it is common to manufacture the shape or color of the insulator differently to determine the starting point of the coiled coil.

However, as various types of ensulators are manufactured, the number of parts increases and the assembly process is complicated.

The present invention provides a stator capable of easily discriminating the start end of a coil wound on a split core and a motor including the same.

A stator according to an aspect of the present invention includes: a divided core assembly including a plurality of divided cores, an upper insulator covering the divided cores, and a lower insulator; And a plurality of coils wound around the plurality of divided core assemblies, wherein the upper insulator and the lower insulator have the same shape.

Motor according to an aspect of the present invention, the housing; A stator disposed in the housing and wound with a coil; A rotor rotatably disposed in the stator; A rotating shaft integrally rotating with the rotor; And a power connection part electrically connected to the coil, wherein the stator includes a stator core having a plurality of divided cores coupled, a plurality of coils wound on the divided cores, and a first end of the wound coil. The second end is connected to the power connection part, and an extension length of the second end is formed longer than an extension length of the first end.

According to the present invention, the shape of the insulator fitted to the split core is unified, and the number of parts is reduced and the assembly process is simplified.

According to the present invention, it is possible to easily discriminate the starting end of the coil wound on the divided core, thereby improving the assembly speed.

1 is an exploded view of a motor according to an embodiment of the present invention,
2 is a perspective view of a stator according to an embodiment of the present invention,
3 is a perspective view of a divided core according to an embodiment of the present invention,
4 is a perspective view showing a state in which the coil is wound on the divided core assembly according to an embodiment of the present invention,
5 is a modification of FIG. 4,
6 is an exploded view for explaining a state in which the end of the coil is electrically connected according to an embodiment of the present invention,
7 is a perspective view showing a state in which the end of the coil is electrically connected according to an embodiment of the present invention,
8 is a perspective view for showing a state in which a coil according to an embodiment of the present invention is electrically connected through a mold member,
9 is a modification of FIG. 7.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In the present invention, terms such as "comprises" or "have" are intended to indicate that there are features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, the accompanying drawings in the present invention should be understood to be shown enlarged or reduced for convenience of description.

Now, the present invention will be described in detail with reference to the drawings, and the same or corresponding components will be given the same reference numbers regardless of the reference numerals, and redundant description thereof will be omitted.

1 is an exploded view of a motor according to an embodiment of the present invention.

Referring to FIG. 1, a motor according to an embodiment of the present invention includes a housing 110, a stator 200 disposed in the housing 110 and wound with a coil 232, and the stator 200 It includes a rotor 300 rotatably disposed, a rotating shaft 400 integrally rotating with the rotor 300, and a power connection electrically connected to the coil.

Here, the motor is a starter motor, radiator fan motor, window brush motor, air conditioning fan motor, fuel pump motor, window shield motor, motor for door look, antenna elevating motor, ABS, TCS control motor applied to automobiles , May be any one of a motor for a rearview mirror, a motor for adjusting the angle of the seat, and a dual clutch transmission motor (DCT).

The housing 110 is formed in a cylindrical shape, and a space in which the stator 200 and the rotor 300 can be mounted is provided. At this time, the shape or material of the housing 110 may be variously modified, but a metal material that can withstand high temperatures may be selected due to the characteristics of the vehicle.

The housing 110 is configured to be coupled to the cover 120 to shield the stator 200 and the rotor 300 from the outside. In addition, a cooling structure (not shown) may be further included to easily discharge internal heat. The air cooling structure or the water cooling structure may be selected as the cooling structure, and the shape of the housing 110 may be appropriately modified according to the cooling structure.

The stator 200 is inserted into the inner space of the housing 110. The stator 200 may be a fixture having a coil and a plurality of divided cores through which the coil is wound. The end 232 of the coiled coil protrudes to the outside and is electrically connected.

The rotor 300 is inserted into a space provided inside the stator 200. Specifically, the rotor 300 is mounted with a magnet and rotates by electromagnetic interaction with the stator.

The rotating shaft 400 is coupled to the central portion of the rotor 300. Therefore, when the rotor 300 rotates, the rotation shaft 400 rotates along the axial direction. At this time, the rotating shaft 400 may be rotatably coupled to the housing 110 by a bearing (not shown).

The bus card 500 and the circuit board 700 are electrically connected to the coil 232 protruding from the stator 200. The circuit board 700 may be a circuit board 700 mounted with a Hall IC (not shown) that senses the rotation of the rotor 300. The circuit board 700 is inserted into the mold member 600 and fixed.

2 is a perspective view of a stator according to an embodiment of the present invention, FIG. 3 is a perspective view of a split core according to an embodiment of the present invention, and FIG. 4 is a coil in a split core assembly according to an embodiment of the present invention It is a perspective view showing a wound state, and FIG. 5 is a modification of FIG. 4.

Referring to FIG. 2, the stator 200 according to the present invention includes a plurality of split core assemblies 210 and a plurality of coils 230 wound around the split core assembly 210. The coil 230 is wound around each divided core assembly 210, and the first end 231 and the second end 232 are exposed to the outside. Here, the first end 231 and the second end 232 may be a start end at which the coil 230 first starts winding and an end end at which the winding ends.

The first end 231 and the second end 232 of the coil exposed to the outside are electrically connected to the above-described bus card and/or circuit board.

Referring to FIG. 3, the divided core assembly 210 constituting the stator 200 includes a divided core 211, an upper insulator 212 covering the divided core 211, and a lower insulator 213. .

The upper insulator 212 and the lower insulator 213 are fitted to the upper and lower sides of the divided core 211 to electrically insulate the divided core 211 and the coil. The upper insulator 212 and the lower insulator 213 only differ in positions inserted into the split core 211, and all shapes thereof may be identical.

Referring to FIG. 4, two divided core assemblies 210 constitute one divided core set 220 and the coil 230 may be wound around the divided core set 220.

At this time, when all of the upper insulators 212 have the same shape, there is a problem that it is not possible to distinguish which of the first end 231 and the second end 232 of the coil is the start end. Since all of the first end 231 should be connected to the neutral point and the second end 232 must be connected to any one of U, V, and W phases, any of the first end 231 and the second end 232 It is important to know exactly what is the beginning.

Therefore, in the present invention, the extension lengths of the first end 231 and the second end 232 are formed differently so that the first end 231 and the second end 232 can be clearly distinguished.

Conventionally, the start and end ends are distinguished by different shapes or shapes of the insulator, but this increases the number of parts, which increases the cost and complicates the assembly process.

However, in the present invention, the insulator is manufactured in the same manner to reduce the number of parts, and the start end can be easily determined by adjusting the lengths of the first end 231 and the second end 232 of the coil 230. There are advantages.

The insulator has a flat contact surface (213a in FIG. 3) in which the coil is wound so that it can be used for both upper and lower insulators. However, since there is no groove on the contact surface of the insulator, there is a problem that the winding becomes difficult when the coil has a large diameter.

Therefore, in the present invention, it is preferable to use a coil that is thin enough to allow winding without a separate groove. If the diameter of the coil 230 is within 0.7 to 1.0 mm, winding is possible even without a groove.

5, the second end 232 may be made larger than the diameter of the conventional coil. When the diameter of the second end 232 becomes large (D2>D1), even when it is formed longer than the first end 231, sufficient uprightness can be maintained, thereby increasing reliability. At this time, the second end 232 may be formed by connecting a separate reinforcing part to the coil 230. The reinforcement portion is not particularly limited as long as it is a conductive material.

6 is an exploded view for explaining a state in which the end of the coil is electrically connected according to an embodiment of the present invention, and FIG. 7 is a perspective view showing a state in which the end of the coil according to an embodiment of the present invention is electrically connected , FIG. 8 is a perspective view for showing a state in which a coil according to an embodiment of the present invention is electrically connected through a mold member, and FIG. 9 is a modification of FIG. 7.

6 to 8, the first end 231 and the second end 232 of the coil protruding from the stator 200 are electrically connected to the bus card 500 and the circuit board 700. The first end 231 is connected to the hook 510 of the bus card 500 and is connected to a neutral point.

The second end 232 is connected to the circuit board 700 disposed on the top of the bus card 500. The second end 232 connected to the circuit board 700 is connected to any one of U, V, and W phases depending on the position. Specifically, the second end 232 may be connected to the fusing unit 710 formed on the circuit board 700. At this time, the second end 232 is supported by the through hole 610 of the mold member 600 disposed between the stator 200 and the circuit board 700.

That is, since the second end 232 passes through the through-hole 610 of the mold member 600 and is connected to the fusing part 710, electrical reliability can be maintained even in the case of an external impact. In addition, a guide groove 620 for guiding the second end 232 passing through the through hole 610 may be formed on the sidewall of the mold member 600.

However, the electrical connection of the coil is not necessarily limited thereto, and may be variously modified. For example, as shown in FIG. 9, the first end 231 of the coil is inserted into an insertion hole 720 provided in the circuit board 700 and connected to a neutral point, and the second end 232 is a fusing part 710 Can be connected to. In this case, the circuit board 700 may be a multilayer circuit board having a circuit pattern formed therein.

According to this configuration, the bus card can be omitted, thereby reducing manufacturing cost and miniaturizing the motor.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the claims are also provided. It belongs to.

110: housing
200: stator
231: first end
232: second end
500: bus card
600: mold member
700: circuit board

Claims (10)

A divided core assembly including a plurality of divided cores, an upper insulator coupled to an upper end of the divided core, and a lower insulator coupled to a lower end of the divided core; And
Includes; a plurality of coils wound on the plurality of divided core assembly,
The shape of the upper insulator and the lower insulator are the same,
Each of the first end and the second end of the coiled coil is disposed on a straight line in a vertical direction, and the second end is longer in the vertical direction than the first end,
The diameter of the second end is larger than the diameter of the first end,
The coil is a stator having a diameter of 0.7 to 1.0 mm.
According to claim 1,
A stator further comprising a reinforcing part connected to the second end.
According to claim 1,
The split core assembly is a stator in which two or more are combined to form a split core set, and the coil is wound in units of the split core set.
According to claim 1,
The stator having a flat surface is a contact surface of the lower insulator on which the coil is wound.
housing;
A stator disposed in the housing and wound with a coil;
A rotor rotatably disposed in the stator;
A rotating shaft integrally rotating with the rotor; And
Includes; a power connection portion electrically connected to the coil,
The stator includes a stator core in which a plurality of divided cores are coupled, and a plurality of coils wound around the divided core,
The first end and the second end of the coiled coil are respectively disposed on a straight line in a vertical direction to be connected to the power connection,
The vertical extension length of the second end is longer than the vertical extension length of the first end,
The diameter of the second end is larger than the diameter of the first end,
The coil is a motor having a diameter of 0.7 to 1.0 mm.
The method of claim 5,
The power connection portion includes a bus card disposed on the upper portion of the rotor, and a circuit board disposed on the upper portion of the bus card,
The first end of the coil is electrically connected to the bus card, and the second end is electrically connected to the circuit board.
The method of claim 5,
The power connection portion is a circuit board including a fusing portion spaced apart from the upper surface, and a plurality of insertion holes,
The first end of the coil is inserted into the insertion hole and electrically connected, and the second end is electrically connected to the fusing part.
The method of claim 5,
It includes a mold member for covering the power connection,
A motor having a through hole through which the second end of the coil passes is formed on the sidewall of the mold member. delete delete

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