KR20180042686A - Ground terminal, Cover assembly and vehicle having the same - Google Patents

Abstract

An embodiment of the present invention relates to a cover assembly and a motor having the same The cover assembly comprises: a cover plate; a ground terminal arranged in the cover plate; and a capacitor electrically connected to the ground terminal and a wire. The ground terminal includes: a body unit; a ground unit formed to be bent in a first direction in one region in the top of the body unit; a clip unit extended in a second direction opposite to the first direction at both sides of the body unit; and a coupling unit extended in a lower part of the body unit. The wire is coupled to the clip unit through fitting. Therefore, the wire of the capacitor can be fixed while being temporarily assembled, thereby performing an automated process in motor assembling.

Description

The present invention relates to a ground terminal, a cover assembly, and a motor including the ground terminal.

Embodiments relate to a ground terminal, a cover assembly and a motor including the same.

Generally, a motor is provided with a rotating shaft rotatably disposed, 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.

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.

Normally, the commutator is coupled to the rotating shaft while rotating in conjunction with the coil, and the brush is coupled to the housing and disposed to be in contact with the commutator. At this time, the brush contacts the commutator and supplies electricity.

Since the commutator has a polarity portion formed at minute intervals in order to induce an instantaneous electrode change, a spark discharge occurs at the time of friction connection between the polar portion and the brush, thereby generating noise. A filter is installed to prevent such noise.

As the filter, a capacitor may be used. The capacitor must emit noise through the ground terminal. To this end, the wire of the capacitor is connected to the ground terminal. At this time, the wire of the capacitor is welded directly on the ground terminal.

Therefore, there may arise a problem that the wire of the capacitor is separated from the ground terminal by an external force.

A ground terminal, a cover assembly and a motor including the same, wherein the connection pin improves the bonding force of the wire of the capacitor.

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 ground terminal disposed on the cover plate; And a capacitor connected to the ground terminal by a wire, the ground terminal comprising: a body portion; A grounding portion bent in a first direction in an upper end region of the body portion; A clip portion extending from both sides of the body portion in a second direction opposite to the first direction; And a coupling portion extending from a lower portion of the body portion, wherein the clip portion includes a plate-shaped body connected to the body portion; Two protrusions spaced apart from each other at an upper portion of the body; And a seating groove formed between the projections, wherein the wire is seated in the seating groove.

The wire may be coupled to the clip portion in a fitting manner.

The clip portion may further include a fixing portion protruding in a direction opposite to each other in each of the protrusions.

Meanwhile, the grounding portion may be formed at the center of the body portion in the longitudinal direction.

The coupling portion may be formed on the same plane as the body portion.

The coupling portion may further include a serrated protrusion, and the coupling portion may be inserted into the coupling groove of the cover plate.

A guide groove for guiding the engagement of the ground terminal may be further formed on the cover plate when the engaging groove and the engaging portion are engaged.

Here, the guide groove may be formed in a U-shape.

The connector may further include a connector to which an external power source is connected, and a terminal disposed inside the connector may be electrically connected to the ground terminal.

The connection terminal may be located on a lower surface of the cover plate, and the terminal may be disposed through the cover plate.

According to an embodiment of the present invention, A rotor coupled to the rotating shaft; A commutator coupled to the rotating shaft; A stator disposed outside the rotor; A housing for accommodating the rotor, the commutator, and the stator; And a cover assembly covering the housing, the cover assembly comprising: a cover plate; A brush assembly disposed on the cover plate to be in contact with the commutator; A ground terminal disposed on the cover plate; And a capacitor connected to the ground terminal by a wire, the ground terminal comprising: a body portion; A grounding portion bent in a first direction in an upper end region of the body portion; A clip portion extending from both sides of the body portion in a second direction opposite to the first direction; And a coupling portion extending from a lower portion of the body portion, wherein the clip portion includes: a plate-shaped body connected to the body portion; Two protrusions spaced apart from each other at an upper portion of the body; And a seating groove formed between the projections, wherein the wire is secured to the seating groove.

The wire may be coupled to the clip portion in a fitting manner.

Here, the clip portion may include a plate-shaped body connected to the body portion; Two protrusions spaced apart from each other at an upper portion of the body; And a seating groove formed between the projecting portions, wherein the wire can be seated in the seating groove.

The clip portion may further include a fixing portion protruding in a direction opposite to each other in each of the protrusions.

The ground portion may be formed at the center of the body in the longitudinal direction, and the coupling portion may be formed on the same plane as the body portion.

The coupling portion may further include a serrated protrusion, and the coupling portion may be inserted into the coupling groove of the cover plate.

The cover assembly may further include a connector to which an external power source is connected, and a terminal disposed inside the connector may be electrically connected to the ground terminal and the brush assembly.

In addition, the connection terminal is located on the lower surface of the cover plate, and the terminal can be disposed through the cover plate.

The earthing terminal according to the embodiment having the above-described configuration can provide an advantageous effect that the assembling process can be facilitated since the clip portion is provided to fix the wire of the capacitor in the assembled state.

Further, the clip portion includes a clip portion to which the wires of the capacitor are coupled in a fitting manner, thereby providing an advantageous effect of increasing the coupling force between the capacitor and the ground terminal.

Accordingly, the ground terminal can fix the wire of the capacitor so that no flow occurs, thereby enabling an automation process, not a manual operation.

Thus, the motor can simplify the assembly process through an automated process.

1 is a view showing a motor according to an embodiment,
2 is a perspective view showing a cover assembly according to an embodiment,
3 is a bottom perspective view showing a cover assembly according to an embodiment,
4 is a view showing the combination of the cover plate and the ground terminal of the cover assembly according to the embodiment,
5 is a perspective view of a ground terminal according to an embodiment,
6 is a front view of the ground terminal according to the embodiment,
7 is a side view of the ground terminal according to the embodiment
8 is a view showing a grounding part in contact with the housing of the motor according to the embodiment.

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.

1 is a view showing a motor according to an embodiment.

1, the motor 1 according to the embodiment includes the cover assembly 2, the housing 10, the stator 20, the rotor 30, the rotating shaft 40, and the commutator 50 according to the embodiment. . ≪ / RTI > Here, the cover assembly 2 may be arranged to cover the open top of the housing 10.

The cover assembly 2 and the housing 10 can form the outer shape of the motor 1. [

A receiving space can be formed inside by the combination of the cover assembly 2 and the housing 10. [ 1, a stator 20, a rotor 30, a rotating shaft 40, a commutator 50, and the like may be disposed in the accommodating space.

The stator 20 induces electrical interaction with the rotor 30 to induce rotation of the rotor 30. [ The stator 20 is coupled to the inside of the housing 10, and the stator 20 can include a plurality of magnets. The magnet forms a coil and a rotating magnetic field wound around the rotor (30). The magnet may be arranged such that the N pole and the S pole alternate with respect to the circumferential direction around the rotation axis 40. [

Meanwhile, the stator 20 may be fabricated by combining a plurality of divided cores, or may be fabricated into a single core formed of a single cylinder.

The rotor (30) is disposed outside the stator (20). That is, the rotor 30 may be disposed inside the stator 20.

The rotor 30 may include a rotor core and a coil. The rotor core may be formed by stacking a plurality of plates in the form of thin steel plates, but is not limited thereto. For example, the rotor core may be formed as a single unit.

A plurality of slots may protrude from the outer circumferential surface of the rotor core. The slot may protrude in the radial direction with respect to the center of the rotor. At this time, the slot may be arranged to face the magnet. Then, coils are wound on each slot. At this time, the insulator can be mounted on the slot. The insulator insulates the slot and the coil.

When a current is supplied to the coil, electrical interaction with the magnet is induced and the rotor 30 can rotate. When the rotor 30 rotates, the rotary shaft 40 also rotates. At this time, the rotary shaft (40) can be supported by the bearing (60).

Fig. 2 is a top view of the cover plate, and Fig. 3 is a bottom view of the cover plate.

2 and 3, the cover assembly 2 includes a cover plate 100, a connector 200 in which a terminal 210 is disposed, a brush assembly 300, a choke coil 400, A terminal 500, a capacitor 600, and a ground terminal 700.

3, the brush assembly 300, the choke coil 400, the hook terminal 500, the capacitor 600, and the ground terminal 700 may be disposed on the lower surface of the cover plate 100 have.

The terminal 210 of the connector 200, the brush assembly 300, the choke coil 400, the hook terminal 500, the capacitor 600, and the ground terminal 700 may be electrically connected. At this time, the terminal 210, the choke coil 400 and the capacitor 600 of the connector 200 can be electrically connected to each other by using a member such as a wire and the hook terminal 700.

The cover plate 100 may be arranged to cover the open top of the housing 10. As shown in FIGS. 2 and 3, the cover plate 100 may be formed in a disc shape. The cover plate 100 may be formed of an insulating material such as a mold.

A ground terminal 700 may be disposed on the lower surface of the cover plate 100.

The cover plate 100 includes a boss 110 protruding from a lower surface of the cover plate 100, a coupling groove 120 formed in the boss 110 to connect one side of the ground terminal 700, And a guide groove 130 for guiding the coupling of the terminal 700.

Here, the guide groove 120 may be formed on the lower surface of the cover plate 100 in a U-shape as shown in FIG. When the ground terminal 700 is assembled to the cover plate 100, the guide groove 120 can guide the coupling so that the ground terminal 700 is disposed at a predetermined position. The side surface of the guide groove 120 can support the ground terminal 700.

The connector 200 allows the power supplied from the external power supply unit to be supplied to the motor 1. As shown in FIGS. 2 and 3, the connector 200 may be arranged to penetrate the cover plate 100. A terminal 210 may be disposed inside the connector 200. Accordingly, the power supplied from the outside can be supplied to the brush assembly 300 of the motor 1 through the terminal 210. [

The brush assembly 300 may include a brush 310, a case 320 including the brush 310 therein, and an elastic member 330 included in the case 320 to provide an elastic force. Accordingly, the brush 310 can be disposed so as to be in contact with the commutator 50. Accordingly, the brush 310 can deliver the power supplied through the commutator 50 to the coil.

Meanwhile, the brush assembly 300 is connected to one side of the choke coil 400. The other side of the choke coil 400 is connected to the capacitor 600 via the hook terminal 500.

The choke coil 400 can shield electromagnetic waves emitted from the motor 1 to the outside.

The hook terminal 500 may be disposed between the connector 200 and the choke coil 400. The hook terminal 500 may be electrically connected to the terminal 210 of the connector 200 and the choke coil 400.

The capacitor 600 may be electrically connected to the hook terminal 500. The capacitor 600 may be electrically connected to the ground terminal 700 through the wire 610. Accordingly, the terminal 210 of the connector 200 to which the external power source is connected may be electrically connected to the ground terminal 700.

Then, the capacitor 600 can emit noise through the ground terminal 700.

The ground terminal 700 may be electrically connected to the capacitor 600.

FIG. 5 is a perspective view of the ground terminal according to the embodiment, FIG. 6 is a front view of the ground terminal according to the embodiment, and FIG. 7 is a side view of the ground terminal according to the embodiment. 5 to 7 clearly show only the main characteristic parts in order to conceptually clearly understand the ground terminal according to the embodiment, and as a result various variations of the illustration are expected, and the scope of the embodiment Need not be limited.

5 to 7, the ground terminal 700 may include a body portion 710, a ground portion 720, a clip portion 730, and a coupling portion 740. The body portion 710, the ground portion 720, the clip portion 730, and the engaging portion 740 can be formed by bending a single plate material. Here, the wire 610 of the capacitor 600 may be coupled to the clip portion 730 in a fitting manner.

The body portion 710 forms the body of the ground terminal 700. As shown in FIG. 5, the body portion 710 may be formed in a bar shape.

The grounding portion 720 may be formed to extend from one region of the upper end of the body portion 710. At this time, the ground portion 720 may be formed in the longitudinal center of the body portion 710.

The grounding portion 720 may be bent in a first direction (R in Fig. 7). Here, the first direction (R in FIG. 7) may be a direction toward the housing 10 with respect to the radial direction when the ground terminal 700 is coupled to the cover plate 200. Then, the grounding portion 720 can be elastically deformed. Accordingly, the grounding portion 720 can come into contact with the inner surface of the housing 10.

8, a wire 610 is connected to the clip portion 730 in a state where the coupling portion 740 is coupled to the coupling groove 120, and the ground portion 720 is connected to the inner side of the housing 10 Lt; / RTI > The grounding portion 720 is bent and formed into a curved surface so that the grounding portion 720 is smoothly inserted into the inner surface of the housing 10 in the process of covering the housing 10 with the cover plate 100. The grounding portion 720 is elastically deformed when the cover plate 100 covers the housing 10.

The clip portion 730 may be formed by being bent at both side ends of the body portion 710 in a second direction (F in Fig. 7). Here, the second direction (F in Fig. 7) may be a direction toward the rotary shaft 40 with respect to the radial direction when the ground terminal 700 is coupled to the cover plate 100. [ Accordingly, the second direction may be the opposite direction of the first direction.

When viewed from above the ground terminal 700, the body portion 710 and the clip portion 730 may be formed in a U-shape. When the cover plate 100 and the ground terminal 700 are coupled to each other, the body portion 710 and the clip portion 730 may be guided by the guide groove 130 and disposed at predetermined positions. The side surface of the guide groove 120 can support the body portion 710 of the ground terminal 700 and the clip portion 730. At this time, a part of the clip portion 730 may be arranged to be out of the boss portion 110 in the second direction. Part of the clip portion 730 may be exposed in the guide groove 120 in the second direction.

5 to 7, the clip unit 730 includes a body 731, two protrusions 732 extending from the upper portion of the body 731, and a seat formed between the two protrusions 732 And a groove 733. The clip portion 730 may include a fixing portion 734 formed to protrude in a direction opposite to each other in the protruding portion 732.

The body 731 is formed in a plate shape, and one side of the body 731 can be connected to the body portion 710.

The protrusion 732 may protrude from the upper portion of the body 731. Since the protrusions 732 are disposed apart from each other, a seating groove 733 may be formed between the protrusions 732.

A wire 610 can be seated in the seating groove 733. [ At this time, the wire 610 may be seated in the seating groove 733 and then fixed to the clip portion 730 by welding or the like.

Although the wire 610 is fixed to the clip portion 730 by welding or the like, it is not limited thereto. For example, when the fixing portion 734 is formed, the wire 610 can be fixed to the seating groove 733 by the fixing portion 734. [ Accordingly, the flow of the wire 610 due to the external force can be prevented.

That is, the fixing portion 734 can prevent the wire 610 disposed in the seating groove 733 from coming off.

Therefore, when the wire 610 is fitted to the clip portion 730, the capacitor 600 is held in the state of being coupled to the ground terminal 700, so that the operator must hold the wire 610 for welding Is removed. The structure of coupling the capacitor 600 and the ground terminal 700 as described above is a very advantageous structure in implementing an automation process.

Further, since the wire 610 is fixed to the clip portion 730 by the fixing portion 734, a separate welding operation may not be required. However, in order to secure the electrical connection between the wire 610 and the clip portion 730, the welding operation may be performed in parallel.

The engaging portion 740 is formed at a lower portion of the body portion 710. The engaging portion 740 may be disposed on the same plane as the body portion 710.

The engaging portion 740 engages with the cover plate 100. Specifically, the cover plate 100 is provided with a protruded boss 110, and the boss 110 can be formed with a coupling groove 120. The coupling portion 740 is inserted into the coupling groove 120, Thereby fixing the body portion 710 to the cover plate 100.

The engaging portion 740 may further include a protrusion 741. The protrusion 741 increases the coupling force between the coupling portion 740 and the coupling groove 120. At this time, each of the plurality of protrusions 741 is formed in a sawtooth shape so that it can be configured to be difficult to be detached once the engaging portion 740 is inserted into the engaging groove 120.

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: cover assembly
10: housing 20:
30: rotor 40:
50: commutator 60: bearing
100: cover plate 110: boss portion
120: coupling groove 130: guide groove
200: connector 210: terminal
300: Brush assembly 310: Brush
320: Case 330: Elastic member
400: Choke coil
500: stator
600: capacitor 610: wire
700: ground terminal 710: body part
720: ground portion 730: clip portion
731: Body 732: Projection
733: seat groove 734:
740: engaging portion 741: projection

Claims (17)

Cover plate;
A ground terminal disposed on the cover plate; And
And a capacitor electrically connected to the ground terminal and the wire,
The ground terminal includes:
A body portion;
A grounding portion bent in a first direction in an upper end region of the body portion;
A clip portion extending from both sides of the body portion in a second direction opposite to the first direction; And
And a coupling portion extending from a lower portion of the body portion,
The clip portion includes:
A plate-shaped body connected to the body portion;
Two protrusions spaced apart from each other at an upper portion of the body; And
And a seating groove formed between the projections,
Wherein the wire is seated in the seating groove. The method according to claim 1,
Wherein the wire is coupled to the clip portion in a fit manner. The method according to claim 1,
Wherein the clip portion further comprises a fixing portion protruding in mutually opposing directions at each of the protrusions. The method according to claim 1,
Wherein the grounding portion is formed at a longitudinal center of the body portion. The method according to claim 1,
Wherein the coupling portion is formed flush with the body portion. The method according to claim 1,
Wherein the engaging portion further includes a serrated protrusion, and the engaging portion is engaged with the engaging groove of the cover plate. The method according to claim 6,
Wherein a guide groove for guiding engagement of the ground terminal is further formed on the cover plate when the engaging groove and the engaging portion are engaged. 8. The method of claim 7,
Wherein the guide groove is formed in a U-shape. The method according to claim 1,
And a connector to which an external power source is connected,
And a terminal disposed within the connector is electrically connected to the ground terminal. 10. The method of claim 9,
Wherein the connection terminal is located on a lower surface of the cover plate, and the terminal is disposed through the cover plate. A rotating shaft;
A rotor coupled to the rotating shaft;
A commutator coupled to the rotating shaft;
A stator disposed outside the rotor;
A housing for accommodating the rotor, the commutator, and the stator; And
A cover assembly covering the housing,
The cover assembly includes:
Cover plate;
A brush assembly disposed on the cover plate to be in contact with the commutator;
A ground terminal disposed on the cover plate; And
And a capacitor connected by the wire to the ground terminal,
The ground terminal includes:
A body portion;
A grounding portion bent in a first direction in an upper end region of the body portion;
A clip portion extending from both sides of the body portion in a second direction opposite to the first direction; And
And a coupling portion extending from a lower portion of the body portion,
The clip portion includes:
A plate-shaped body connected to the body portion;
Two protrusions spaced apart from each other at an upper portion of the body; And
And a seating groove formed between the projections,
And the wire is seated in the seating groove. 12. The method of claim 11,
And the wire is coupled to the clip portion in a fitting manner. 12. The method of claim 11,
And the clip portion further comprises a fixing portion protruding in mutually facing directions in each of the protrusions. 12. The method of claim 11,
Wherein the grounding portion is formed at a longitudinal center of the body portion, and the engaging portion is formed on the same plane as the body portion. 12. The method of claim 11,
Wherein the engaging portion further includes a serrated protrusion, and the engaging portion is engaged with the engaging groove of the cover plate. 12. The method of claim 11,
Wherein the cover plate further includes a connector to which an external power source is connected, and a terminal disposed inside the connector is electrically connected to the ground terminal and the brush assembly. 17. The method of claim 16,
Wherein the connection terminal is located on a lower surface of the cover plate, and the terminal is disposed through the cover plate.

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