KR20180001901A - Motor Housing and Motor having the same - Google Patents

Abstract

The present invention relates to a motor housing which can realize a reliable assembling structure of a heterogeneous material housing formed with a metal material and a non-metal material (synthetic resin material), and a motor having the same. The motor housing comprises: a first housing main body; a first flange formed to protrude to the outside from the first housing main body; a first housing having a hole formed in the first flange; a second housing main body; a second flange formed to protrude to the outside from the second housing main body; and a second housing having a coupling unit formed to protrude toward the first housing from the second flange. A coupling hole is formed in the center of the coupling unit coupled by passing through the hole.

Description

[0001] Motor housing and motor having same [0001]

The present invention relates to a motor housing and a motor including the motor housing.

A motor is a device that converts electrical energy into rotational energy using the force that a conductor receives in a magnetic field. Recently, as the use of motors has expanded, the role of the motor has become important. Particularly, as the electric field of automobiles rapidly advances, the demand of motors applied to steering systems, braking systems, and design systems is greatly increasing.

Generally, a motor is provided with a rotating shaft, a rotor coupled to the rotating shaft, and a stator fixed to the inside of the housing. The stator is installed with a gap along the circumference of the rotor. And a coil for forming a rotating magnetic field is wound around the stator to induce electrical interaction with the rotor to induce rotation of the rotor. As the rotor rotates, the rotating shaft rotates to generate a driving force.

At this time, in the case of the motor housing, a separate joint or coupling portion must be formed for coupling or assembling with the object to which the motor is mounted. A coupling member such as a screw is coupled to the coupling portion to couple the motor to the object.

However, if the separate coupling portion is formed in the motor housing, the miniaturization of the motor is restricted.

Further, if a fastening member such as a screw is used, the motor housing may be damaged by axial pressure for fastening.

Accordingly, in the case of the motor housing, iron or an aluminum alloy is used, which increases the weight of the motor and increases the production cost.

On the other hand, if a welding method is used for joining the motor and the object, the heat of the welding is conducted along the motor housing of the metal, which may cause a problem of burning of parts disposed inside the motor.

Accordingly, there are many restrictions on the reliability depending on the material characteristics and the process environment between the parts.

According to an aspect of the present invention, there is provided a motor housing having a coupling structure for mounting a first housing and a second housing, And a motor provided with the motor.

When the first housing and the second housing are formed of different materials, at least one of the first housing and the second housing has a hollow rivet shape and the other hole is formed in the other, (First housing and second housing) and a mounting function to a product (object), and a motor having the motor housing.

Accordingly, a motor housing having optimized space efficiency and a motor having the motor housing are provided.

The present invention also provides a motor housing capable of realizing a reliable assembling structure of a heterogeneous material housing made of a metal material and a non-metallic material (synthetic resin material), and a motor having the motor housing.

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 first flange protruding outward from the first housing body; And a first housing having a hole formed in the first flange, a second housing body; A second flange protruding outward from the second housing body; And a second housing having a coupling portion formed to protrude from the second flange toward the first housing, wherein a coupling hole is formed at the center of the coupling portion that is inserted through the hole.

The first housing may be formed of a synthetic resin material, and the second housing may be formed of a metal material.

The coupling portion may be formed in a sleeve shape.

The end of the coupling portion may be bent outward so that the second housing is fixed to the first housing.

According to an aspect of the present invention, there is provided a motor vehicle comprising: a motor housing having a first housing and a second housing; A stator disposed within the motor housing; A rotor disposed within the motor housing and rotatably disposed in the stator; And a rotating shaft rotating together with the rotor, wherein the first housing comprises: a first housing main body; A first flange protruding outward from the first housing body; And a hole formed in the first flange, the second housing includes a second housing body; A second flange protruding outward from the second housing body; And a coupling portion formed to protrude from the second flange toward the first housing, wherein a coupling hole is formed at the center of the coupling portion that is inserted through the hole.

Here, the first housing may be formed of a synthetic resin material, and the second housing may be formed of a metal material.

The end of the coupling portion may be bent outward so that the second housing is fixed to the first housing.

On the other hand, the motor further includes a cover disposed to cover an opening formed at one side of the first housing, the cover including a plate covering the opening; A cylindrical projection protruding in a vertical direction from a bottom surface of the plate; And at least two centering ribs protruding from an outer circumferential surface of the protrusion, and the centering rib may center the opening of the housing with the cover.

The motor housing according to the embodiment having the above-described structure and the motor having the same structure can be simultaneously mounted on the object and the first housing and the second housing formed of different materials.

That is, it is possible to minimize unnecessary flange joint space for assembly and mounting of the motor outside the volume.

In addition, since a metal coupling portion is coupled to a hole formed in a first housing formed of a synthetic resin material such as plastic, and a coupling member such as a bolt is coupled through the coupling portion, the rigidity of the seating surface with respect to the coupling force of the coupling member is reinforced .

Accordingly, even if the first housing is made of a synthetic resin material, damage due to the fastening force of the fastening member can be prevented.

Therefore, it is possible to realize a reliable assembling structure of a heterogeneous material housing made of a metal material and a non-metallic material (synthetic resin material).

1 is a view showing a motor according to an embodiment,
2 is a sectional view showing the line AA in Fig. 2,
3 is an exploded perspective view showing a motor according to the embodiment,
4 is an exploded perspective view showing a motor according to the embodiment,
5 is a view illustrating a process in which the second housing is fixed to the first housing of the motor according to the embodiment,
6 is a view showing an embodiment of a cover disposed in a motor according to an embodiment of the present invention.
7 is a view showing another embodiment of a cover disposed in a motor according to an embodiment of the present invention,
8 is a view showing embodiments of the centering rib according to the region B 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.

2 is a cross-sectional view showing the line AA in FIG. 2, FIG. 3 is an exploded perspective view showing a motor according to the embodiment, and FIG. 4 is a cross-sectional view showing the motor according to the embodiment. Fig.

1 to 4, a motor 1 according to an embodiment of the present invention includes a motor housing 2, a cover 300, a stator 400, a rotor 500, A coil 700, and a bearing 800. The coils 700,

Here, the motor housing 2 according to the embodiment of the present invention may include the first housing 100 and the second housing 200.

The motor 1 may further include an adhesive member 900 for fixing the cover 300 to the first housing 100.

The first housing 100 and the second housing 200 may be formed of different materials of different materials.

The first housing 100 may be formed of a synthetic resin material such as plastic. The second housing 200 may be formed of a metal material. For example, the second housing 200 may be formed of aluminum, iron, or an alloy containing each of them.

The first housing 100 may include a hole 130 formed in the first housing body 110, the first flange 120, and the first flange 120. The first housing 100 may further include a connector portion 140 formed to protrude outward from the first housing body 110 and electrically connected to the external terminal.

The first housing body 110 may have a first accommodation space 111 formed therein as shown in FIG.

3 and 4, the first housing body 110 may have a cylindrical shape with openings 112 and 113 formed on one side and the other side, respectively.

In the opening 112 formed in one side, as shown in Fig. 3, the cover 300 may be disposed. The opening 113 formed on the other side may be arranged to face the second housing 200.

The first flange 120 may be formed to protrude outward from the opening-side outer peripheral surface of the first housing body 110, as shown in Figs.

The hole 130 may be formed in the first flange 120.

As shown in FIG. 3, four holes 130 are formed as an example, but the present invention is not limited thereto. It is needless to say that less than or greater than four holes 130 may be formed in the first flange 120 in consideration of the mounting of the motor and the mounting with the object (product).

The second housing 200 may include a second housing body 210, a second flange 220 and a coupling portion 230 protruding from the second flange 220. Here, the coupling portion 230 is coupled through the hole 130. Accordingly, the coupling portion 230 may be formed to protrude toward the hole 130 of the first housing 100.

In addition, the second housing body 210, the second flange 220, and the coupling portion 230 are integrally formed and may be formed of a metal material.

The second housing body 210 may have an opening formed at one side thereof and a second accommodation space 211 may be formed therein. As shown in FIGS. 3 and 4, the second housing body 210 may have a cylindrical shape with an opening 212 formed in one side thereof.

The first flange 120 of the first housing 100 and the second flange 220 of the second housing 200 are disposed in contact with each other so that the first housing space 111 and the second housing space 200 211 form an accommodation space in which the stator 400, the rotor 500, and the like can be disposed. At this time, the opening 212 of the second housing body 210 is disposed to face the opening 113 of the first housing body 110.

3 and 4, the second flange 220 may protrude outward from the outer peripheral surface of the second housing body 210 at the opening 212 side.

2, the second flange 220 can be disposed at the end of the second housing body 210 so as to face the first flange 120 while being in contact with each other.

The engaging portion 230 may be formed to protrude from the second flange 220 toward the hole 130 of the first housing 100. The coupling structure of the hole 130 and the coupling part 230 serves as a guide for coupling the first housing 100 and the second housing 200. [

Meanwhile, the coupling part 230 may be formed in a cylindrical shape. For example, the coupling portion 230 may be formed in a sleeve shape.

Accordingly, a coupling hole 231 may be formed in the center of the coupling portion 230. A coupling member (not shown), such as a screw or a bolt, may be coupled to the coupling hole 231 to penetrate the coupling hole 231.

Accordingly, the coupling portion 230 formed with the coupling hole 231 can reinforce the rigidity of the seating surface with respect to the coupling force of the coupling member. Even if the first housing 100 is formed of a synthetic resin material, since the metallic coupling portion 230 supports the coupling member, the first flange of the first housing 100 120 can be prevented from being damaged.

That is, the engaging portion 230 formed of a metal material acts as a bushing to prevent the first flange 120 from being damaged by the fastening member.

5 (a), the coupling part 230 provided with the coupling hole 231 penetrates through the hole 130 and is coupled. 5 (b), the end portion of the coupling portion 230 is bent outwardly by caulking. Accordingly, the second housing 200 is fixed to the first housing 100.

Accordingly, the coupling structure of the coupling part 230 provided with the hole 130 and the coupling hole 231 can unify the mounting function of the first housing 100 and the second housing 200 and the mounting function of the product (object) Let's do it.

Referring to FIGS. 1 and 3, the cover 300 may be disposed to cover the opening 112.

The cover 300 may be fixed to the opening 112 side of the first housing 100 by an adhesive member 900. Here, as the adhesive member 900, epoxy, silicone, urethane, synthetic rubber, ABS (ABS) or the like can be used.

That is, an adhesive member 900 may be applied to the inner circumferential surface of the first housing 100 at the opening 112 side, and the cover 300 may be disposed in an opening 112 of the first housing 100 And can be fixed by the post-bonding member 900.

Accordingly, the adhesive member 900 can seal the space between the first housing 100 and the cover 300.

6 is a view showing an embodiment of a cover disposed in a motor according to an embodiment of the present invention.

Referring to FIG. 6, the cover 300 may include a plate 310, a protrusion 320, and at least two centering ribs 330.

The plate 310 may be formed in a disc shape and may be disposed to cover the opening 112 of the first housing 100.

The protrusion 320 may protrude vertically from the lower surface of the plate 310.

For example, the protrusion 320 may be spaced apart from the bottom edge of the plate 310 by a predetermined distance d, and may protrude downward.

The adhesive member 900 can be disposed between the inner peripheral surface 114 of the housing 100 and the protruding portion 320 on the side of the opening 112 of the housing 100. [

The protrusion 320 may be formed in a cylindrical shape or a ring shape to prevent the adhesive member 900 from flowing out into the protrusion 320 and to optimize the consumption of the adhesive member 900.

The centering ribs 330 may protrude in the radial direction of the protrusion 320 from the outer circumferential surface of the protrusion 320. At least two of the centering ribs 330 may be spaced apart from each other by a predetermined distance r along the circumferential direction of the protrusion 320.

The centering rib 330 is guided by the inner circumferential surface 114 on the side of the opening 112 so that the cover 300 is centered without shaking when the cover 300 is coupled to the opening 112 of the first housing 100 .

Also, the centering rib 330 can prevent the adhesive member 900 from being diced too much, or at least preventing the cover 300 from tilting to one side. Accordingly, when assembled, the flatness of the cover 300 is improved.

Since the centering ribs 330 are guided by the inner peripheral surface 114 on the side of the opening 112, the assembly criterion of the cover 300 can be clarified.

6, four centering ribs 330 are disposed at intervals of 90 degrees with respect to the center of the plate 310, but the present invention is not limited thereto. At least two or more centering ribs 330 may be arranged symmetrically with respect to the center of the plate 310 when two centering ribs 330 are disposed.

On the other hand, the centering rib 330 can be in line contact or point contact with the inner circumferential surface 114 on the side of the opening 112 of the housing 100.

That is, since the centering rib 330 minimizes the contact with the inner peripheral surface 114 in a line or point contact, the contact area with the adhesive member 900 can be maximized. As a result, the adhesion between the cover 300 and the adhesive member 900 can be improved.

FIG. 7 is a view showing another embodiment of a cover disposed in a motor according to an embodiment of the present invention, and FIG. 8 is a view showing embodiments of centering ribs according to the region B in FIG.

Hereinafter, with reference to FIGS. 7 and 8, the same components as those of the cover 300 are denoted by the same reference numerals in the description of the cover 300a, and a detailed description thereof will be omitted.

The cover 300a may include a plate 310, a protrusion 320 and at least two centering ribs 330a and 330b.

The centering ribs 330a may be spaced apart from the lower surface of the plate 310 by a predetermined distance h as shown in FIG. Here, as shown in FIG. 8 (a), the centering rib 330a may be formed in a semi-cylindrical shape having a predetermined curvature R.

The adhesive member 900 may be introduced into the space C formed between the lower surface of the plate 310 and the upper surface 331 of the centering rib 330a. As a result, the adhesion between the cover 300a and the adhesive member 900 can be further improved. Further, the fixing force of the cover 300a with respect to the housing 100 can be further improved by the curing of the adhesive member 900 introduced into the space C.

8A, the centering rib 330a is formed in a semi-cylindrical shape having a predetermined curvature R, so that the centering rib 330a is formed in the opening 112 of the first housing 100 Side inner circumferential surface 114 of the outer circumferential surface.

On the other hand, as shown in FIG. 6B, the centering rib 330b may be formed in a hemispherical shape. The centering rib 330b comes into point contact with the inner peripheral surface 114 on the side of the opening 112 of the first housing 100. [

Meanwhile, the receiving space is formed inside the first housing 100 and the second housing 200 according to the combination of the first housing 100 and the second housing 200, and the stator 400 and the rotor 500 may be disposed in the receiving space. Here, the rotor 500 may be rotatably disposed on the stator 400.

Referring to FIG. 2, the stator 400 may be supported on the inner circumferential surfaces of the first housing 100 and the second housing 200, respectively.

The stator 400 may be wound with a coil 700 forming a rotating magnetic field. Here, the stator 400 may be formed of one core or a plurality of divided cores may be combined.

The rotor 500 may be disposed on the inner side of the stator 400, and the rotary shaft 600 may be coupled to the center portion.

The rotor 500 may include a magnet coupled to the rotor core. For example, the rotor 500 may be configured to have a magnet disposed on the outer circumferential surface of the rotor core.

Accordingly, when the rotor 500 rotates due to the electrical interaction between the coil 700 and the magnet, and the rotor 500 rotates, the rotating shaft 600 rotates to generate driving force.

Meanwhile, the rotary shaft 600 may be rotatably supported inside the housing 100 by a bearing 800. [ As shown in FIG. 2, the bearing 800 may be installed to rotatably support the rotary shaft 600 in the first housing 100 and the second housing, respectively.

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 2: motor housing
100: first housing 110: first housing body
120: first flange 130: hole
200: second housing 210: second housing body
220: second flange 230:
300: cover 310: plate
320: protrusion
330, 330a, 330b: Centering ribs
400: stator
500: Rotor
600:
700: Coil
800: Bearings
900: Adhesive member

Claims (8)

A first housing main body;
A first flange protruding outward from the first housing body; And
A first housing having a hole formed in the first flange,
A second housing main body;
A second flange protruding outward from the second housing body; And
And a second housing having a coupling portion protruding from the second flange toward the first housing,
And a coupling hole is formed at a center of the coupling portion that is coupled through the hole. The method according to claim 1,
Wherein the first housing is formed of a synthetic resin material, and the second housing is formed of a metal material. 3. The method of claim 2,
And the coupling portion is formed in a sleeve shape. The method of claim 3,
And an end portion of the coupling portion is bent outward so that the second housing is fixed to the first housing. A motor housing having a first housing and a second housing;
A stator disposed within the motor housing;
A rotor disposed within the motor housing and rotatably disposed in the stator; And
And a rotating shaft rotating together with the rotor,
The first housing includes:
A first housing main body;
A first flange protruding outward from the first housing body; And
And a hole formed in the first flange,
The second housing includes:
A second housing main body;
A second flange protruding outward from the second housing body; And
And an engaging portion protruding from the second flange toward the first housing,
And a coupling hole is formed at a center of the coupling portion that is inserted through the hole. 6. The method of claim 5,
Wherein the first housing is formed of a synthetic resin material, and the second housing is formed of a metal material. The method according to claim 6,
And an end of the coupling portion is bent outward so that the second housing is fixed to the first housing. 8. The method of claim 7,
Further comprising a cover disposed to cover an opening formed in one side of the first housing,
The cover
A plate covering said opening;
A cylindrical projection protruding in a vertical direction from a bottom surface of the plate; And
And at least two centering ribs protruding from an outer circumferential surface of the protruding portion,
And the cover is centered on the opening of the housing by the centering rib.

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