KR20180006819A - Cover assembly and Motor having the same - Google Patents

Abstract

The present invention relates to a cover assembly and a motor having the same. The cover assembly comprises: a cover main body; a brush holder arranged on one side of the cover main body; and a bus bar terminal of which a part is arranged to be partially exposed to the outside while being arranged inside the cover main body. The cover main body and the brush holder are integrally formed, and are formed of a synthetic resin material. Accordingly, an assembling process can be simplified by integrating the bus bar terminal, the brush holder, and an insulating member with a cover.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cover assembly,

Embodiments relate to a cover assembly for a motor and a motor including the same.

The motor is provided with a shaft rotatably formed, a rotor coupled to the shaft, and a stator fixed to the inside of the housing. The stator is installed with a gap along the circumference of the rotor. The motor induces rotation of the rotor by electrical interaction. When the coil is wound on the rotor, a commutator and a brush are provided to supply current to the coil wound on the rotating rotor. Here, the brush is made of carbon material or the like and can be used as a consumable part.

Typically, the commutator rotates in conjunction with the shaft in engagement with the shaft, and the brush is coupled to the housing and is disposed in contact with the commutator. At this time, the brush contacts the commutator and supplies electricity.

On the other hand, the motor may include a housing having a housing space and an opening at one side and a cover covering the opening.

A stator, a rotor, and the like may be disposed in the accommodation space.

1, the cover 2 may be provided with a brush holder 4 for insulating one side of the brush 3 and an insulating member 6 disposed for insulating the bus bar terminal 5 from each other. Here, the cover 2 is made of aluminum.

That is, a separate insulation part is required for insulation between the components such as the brush 3 and the bus bar terminal 5 and the cover 2 made of aluminum.

As a result, there is a problem that the assembling process for mass production becomes complicated.

Further, since a separate insulating part is used, there is a problem that the cost increases.

Further, since the separate insulation part requires a separate space for installation in the motor, the area of the heat sink including the heat dissipation fin relatively decreases. As a result, there is a problem that the motor becomes vulnerable to heat radiation.

Further, in the case of aluminum, since the weight of the aluminum is relatively heavy, there is a problem that the weight of the motor increases.

SUMMARY OF THE INVENTION The present invention provides a motor cover assembly and a motor including the same that can simplify an assembly process by integrating a bus bar terminal, a brush holder, and an insulating member with a cover .

The problems to be solved by the embodiments are not limited to the above-mentioned problems, and other problems not mentioned here can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, A brush holder disposed on one side of the cover body; And a bus bar terminal disposed inside the cover body and partially exposed to the outside. The cover body and the brush holder are integrally formed by a cover assembly formed of a synthetic resin material.

The bus bar terminal comprises: a vertical plate; A horizontal plate protruding horizontally at one end of the vertical plate; And a coupling part formed to protrude from one side of the horizontal plate, and a hole may be formed in the coupling part.

The coupling portion may be formed in a cylindrical shape, and a bent portion that is bent inward and protruded may be formed.

According to an embodiment of the present invention, A rotor having the rotation axis disposed at a center thereof; A stator disposed outside the rotor; A housing having a space for accommodating the rotor and the stator; And a cover assembly disposed to cover the receiving space, wherein the cover assembly includes: a cover body; A brush holder disposed on one side of the cover body; And a bus bar terminal disposed inside the cover body such that a part thereof is exposed to the outside, wherein the bus bar terminal comprises: a vertical plate; A horizontal plate protruding horizontally at one end of the vertical plate; And a coupling portion formed to protrude from one side of the horizontal plate, wherein a hole is formed in the coupling portion, and an end of the coil disposed in the stator is disposed in the hole.

In addition, the coupling portion may be formed in a cylindrical shape, and the bent portion may be formed by bending inward.

Further, the cover body and the brush holder are integrally formed, and may be formed of a synthetic resin material.

The motor cover assembly according to the embodiment having the above-described configuration can simplify the assembling process by integrating the bus bar terminal, the brush holder, and the insulating member with the cover.

Further, by forming the cover from a synthetic resin material such as a mold or plastic, it is possible to secure the insulating property, thereby omitting the parts such as the insulating member, thereby securing a space in which the heat sink can be installed. Accordingly, the heat dissipation performance of the motor can be improved.

Further, since the cover body can be made of a synthetic resin material, the weight of the motor can be reduced.

1 is a view showing a brush-type motor,
2 is a perspective view showing a motor according to an embodiment,
3 is a cross-sectional view showing AA in Fig. 2,
4 is an exploded perspective view showing a motor according to the embodiment,
5 is a view showing a bus bar terminal according to an embodiment,
6 is a view showing another embodiment of the bus bar terminal according to the embodiment,
7 is a cross-sectional view showing BB of Fig.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

In the description of the embodiments, when an element is described as being formed "on or under" another element, the upper or lower (lower) (on or under) all include that the two components are in direct contact with each other or that one or more other components are indirectly formed between the two components. Also, when expressed as 'on or under', it may include not only an upward direction but also a downward direction based on one component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

Fig. 2 is a perspective view showing a motor according to the embodiment, Fig. 3 is a sectional view showing A-A of Fig. 2, and Fig. 4 is an exploded perspective view showing a motor according to the embodiment.

2 to 4, a motor 1 according to an embodiment of the present invention includes a housing 100 having a housing space formed therein, a cover assembly 200, a stator 300, a rotor 400, A commutator 600, a brush 700, a bearing 800, and a heat sink 900, which rotate together with the rotating shaft 400.

Here, as shown in FIG. 3, the bearing 800 can rotate the rotary shaft 500 and can be disposed at the upper and lower portions of the rotary shaft 500, respectively.

The housing (100) forms the outer shape of the motor (1) and can determine the size of the motor (1). The housing 100 has a receiving space formed therein and an opening formed at one side thereof.

4, a stator 300, a rotor 400, a rotating shaft 500, and the like may be disposed in the receiving space.

The cover assembly 200 according to an embodiment of the present invention may be arranged to cover the opening of the housing 100. [

2 to 6, the cover assembly 200 includes a cover body 210, a brush holder 220 disposed at one side of the upper portion of the cover body 210, and a brush holder 220 disposed inside the cover body 210, And a bus bar terminal 230, 230a disposed to be exposed to the outside. As shown in FIG. 2, the bus bar terminals 230 and 230a may be disposed so that one region is exposed from the cover body 210. [0064] As shown in FIG.

Here, the cover body 210 and the brush holder 220 may be integrally formed. The cover body 210 and the brush holder 220 may be formed of a synthetic resin material. Accordingly, the weight of the motor 1 can be reduced.

The bus bar terminals 230 and 230a are electrically connected to the end portion 321 of the coil 320 wound on the stator 300. [

5 is a view showing a bus bar terminal according to an embodiment.

Hereinafter, a bus bar terminal 230 according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 5, the bus bar terminal 230 may include a vertical plate 231, a horizontal plate 232, and a coupling portion 233.

The vertical plate 231 may be formed in a plate shape. The vertical plate 231 may be disposed in the longitudinal direction (axial direction, C) of the rotary shaft 500. Here, the axial direction is referred to as a vertical direction with respect to the axial direction C of the rotary shaft 500, and the direction perpendicular to the axial direction is referred to as a horizontal direction.

At this time, one side of the vertical plate 231 may be exposed from the cover body 210 as shown in FIG.

The horizontal plate 232 may be formed to protrude horizontally at one end of the vertical plate. Here, the horizontal plate 232 may be formed in a plate shape, as shown in Fig.

The engaging portion 233 may be formed to protrude from one side of the horizontal plate. Here, the coupling portion 233 may be formed in a cylindrical shape. Accordingly, a hole 234 may be formed in the engaging portion 233.

The end portion 321 of the coil 320 may be inserted into the hole 234.

The end portion 321 of the coil 320 can be fixed to the coupling portion 233 by fusing the coupling portion 233 in which the end portion 321 of the coil 320 is inserted.

6 is a view showing another embodiment of the bus bar terminal according to the embodiment.

Hereinafter, a bus bar terminal 230a according to another embodiment of the present invention will be described with reference to FIG. In describing the bus bar terminal 230a, the same components as those of the bus bar terminal 230 are denoted by the same reference numerals, and a description thereof will be omitted.

As shown in FIG. 6, the bus bar terminal 230a may include a vertical plate 231, a horizontal plate 232, and a coupling portion 233a.

The engaging portion 233a is formed in a cylindrical shape, and one region may be formed to be bent inward and protrude.

That is, the engaging part 233a may include a bent part 235 formed by one part of the inner part bent and protruded.

The end portion 321 of the coil 320 is inserted into the hole 234 of the engaging portion 233a as shown in Fig. At this time, as shown in FIG. 7 (b), the end portion 321 is engaged with the bent portion 235 in a fitting manner.

Then, the end portion 321 of the coil 320 can be fixed to the engaging portion 233a by fusing.

Therefore, the end portion 321 of the coil 320 can be fixed to the coupling portion 233a with a double fixed structure, which is primarily fitted to the bending portion 235 in a fitting manner and fixed by fusing.

That is, as described above, the end portion 321 of the coil 320 at the coupling portion 233a can be improved in fixing performance by the double fixing structure.

The stator 300 induces electrical interaction with the rotor 400 to induce rotation of the rotor 400. The stator 300 is coupled to the inside of the housing 100.

The stator 300 may include a stator core 310 and a coil 320 wound around the stator core 310. The stator 300 may further include an insulator (not shown) for insulation between the stator core 310 and the coil 320.

The stator core 310 may be manufactured by combining a plurality of divided cores or may be fabricated into a single core.

The end portion 321 of the coil 320 wound around the stator core 310 is inserted into the coupling portions 233 and 233a and then fixed to the coupling portions 233 and 233a by fusing.

The rotor 400 is disposed inside the stator 300. The rotation shaft 500 may be disposed at the center of the rotor 400.

The rotor 400 may include a rotor core (not shown) and an insulator (not shown). The coil can be wound on the insulator. When an electric current is supplied to the coil, electrical interaction with the stator 300 is induced and the rotor 400 rotates.

When the rotor 400 rotates, the rotary shaft 500 also rotates. At this time, the rotary shaft 500 may be rotatably supported in the housing 100 by a bearing 800. [

Here, the bearings 800 may be disposed on the upper and lower portions of the rotary shaft 500, respectively.

The commutator 600 and the brush 700 are required to supply current to the rotating rotor 400.

The commutator 600 is coupled to the rotating shaft 500. And the commutator 600 may be disposed above the rotor 400. The commutator 600 is electrically connected to a coil disposed in the rotor 400.

Meanwhile, the brush 700 may contact the commutator 400 and apply an external driving signal to the rotor 400.

Here, the brush 700 may be inserted into the brush holder 220 through an opening 221 formed in one side of the brush holder 220. At this time, the brush 700 is disposed in close contact with the commutator 600. Thus, the brush holder 220 insulates the brush 700 from the outside.

Meanwhile, a heat sink 900 may be disposed above the rotor 400. The heat sink 900 may be provided with a plurality of blades 910.

The heat sink 900 may rotate according to the rotation of the rotor 400 to discharge the heat inside the motor 1 to the outside.

Since the cover assembly 200 of the motor 1 is formed of a synthetic resin material, the insulation of the motor 1 can be ensured and a space for installing the heat sink 900 can be secured have. Accordingly, the large-capacity heat sink 900 can be installed inside the housing 100, and the heat radiation performance of the motor 1 can be improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be understood that the present invention can be changed. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: motor
100: Housing
200: cover assembly 210: cover body
220: Brush holder
230, 230a:
300:
400: Rotor
500:
600: commutator
700: Brush
800: Bearings
900: Heatsink

Claims (6)

A cover main body;
A brush holder disposed on one side of the cover body; And
And a bus bar terminal disposed inside the cover body and partially exposed to the outside,
Wherein the cover body and the brush holder are integrally formed, the cover body being made of a synthetic resin material. The method according to claim 1,
Wherein the bus bar terminal comprises:
Vertical plate;
A horizontal plate protruding horizontally at one end of the vertical plate; And
And an engaging portion protruding from one side of the horizontal plate,
And a hole is formed in the coupling portion. 3. The method of claim 2,
Wherein the coupling portion is formed in a cylindrical shape and has an inwardly bent protruding bent portion. A rotating shaft;
A rotor having the rotation axis disposed at a center thereof;
A stator disposed outside the rotor;
A housing having a space for accommodating the rotor and the stator; And
And a cover assembly disposed to cover the receiving space,
The cover assembly
A cover main body;
A brush holder disposed on one side of the cover body; And
And a bus bar terminal disposed inside the cover body and partially exposed to the outside,
The bus bar terminal
Vertical plate;
A horizontal plate protruding horizontally at one end of the vertical plate; And
And an engaging portion protruding from one side of the horizontal plate,
Wherein a hole is formed in the coupling portion, and an end portion of the coil disposed in the stator is disposed in the hole. 5. The method of claim 4,
Wherein the coupling portion is formed in a cylindrical shape and has a bent portion protruding inwardly. 5. The method of claim 4,
Wherein the cover body and the brush holder are integrally formed, and the motor is formed of a synthetic resin material.

Images