KR102613969B1 - Ground terminal, Cover assembly and vehicle having the same - Google Patents

Abstract

This embodiment includes a cover plate; a ground terminal disposed on the cover plate; and a capacitor connected to the ground terminal by a wire, wherein the ground terminal includes: a body portion; a ground portion bent in a first direction at an upper portion of the body portion; Clip portions 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 wire is coupled to the clip portion by fitting, and a motor including the cover assembly. Accordingly, since the wires of the capacitor can be fixed in a provisionally assembled state, an automated process is possible when assembling the motor.

Description

Ground terminal, cover assembly and motor including the same {Ground terminal, Cover assembly and vehicle having the same}

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

Generally, a motor is provided with a rotating shaft that is rotatable, 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 through electrical interaction. When a coil is wound around a rotor, a commutator and brushes are provided to supply current to the coil wound around the rotating rotor.

Typically, the commutator is coupled to a rotating shaft and rotates while connected to the coil, and the brush is coupled to the housing and disposed to contact the commutator. At this time, the brush contacts the commutator to supply electricity.

Since the commutator has polar parts formed at minute intervals to induce an instantaneous electrode change, a spark discharge occurs when the polar parts and the brush are frictionally connected, thereby generating noise. A filter is installed to prevent this noise.

A capacitor may be used as a filter. The capacitor must emit noise through the ground terminal. For this purpose, the wire of the capacitor is connected to the ground terminal. At this time, the wire of the capacitor is immediately welded while placed on the ground terminal.

Therefore, a problem may occur in which the wire of the capacitor is separated from the ground terminal due to external force.

The connection pin provides a ground terminal with improved binding force of the capacitor wire, a cover assembly, and a motor including the same.

The problems to be solved by the embodiment are not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

According to the embodiment, the above task includes: a cover plate; a ground terminal disposed on the cover plate; and a capacitor connected to the ground terminal by a wire, wherein the ground terminal includes: a body portion; a ground portion bent in a first direction at an upper portion of the body portion; Clip portions 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 on the upper part of the body; and a seating groove formed between the protrusions, wherein the wire is secured by a cover assembly seated in the seating groove.

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

Here, the clip part may further include a fixing part protruding from each of the protrusions in a direction facing each other.

Meanwhile, the ground portion may be formed at the longitudinal center of the body portion.

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

Additionally, the coupling portion further includes a sawtooth-shaped protrusion, and the coupling portion can be inserted into a coupling groove of the cover plate.

When the coupling groove and the coupling portion are coupled, a guide groove that guides coupling of the ground terminal may be further formed on the cover plate.

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

Meanwhile, it further includes 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.

Additionally, the ground terminal may be located on the lower surface of the cover plate, and the terminal may be disposed through the cover plate.

Depending on the embodiment, the above task includes: a rotation axis; a rotor coupled to the rotating shaft; a commutator coupled to the rotating shaft; A stator disposed outside the rotor; a housing accommodating the rotor, the commutator, and the stator; and a cover assembly covering the housing, wherein the cover assembly includes: a cover plate; a brush assembly disposed on the cover plate to contact the commutator; a ground terminal disposed on the cover plate; and a capacitor connected to the ground terminal by a wire, wherein the ground terminal includes: a body portion; a ground portion bent in a first direction at an upper portion of the body portion; Clip portions 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 on the upper part of the body; and a seating groove formed between the protrusions, wherein the wire is installed by a motor seated in the seating groove.

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

Here, the clip portion includes a plate-shaped body connected to the body portion; Two protrusions spaced apart from each other on the upper part of the body; and a seating groove formed between the protrusions, wherein the wire can be seated in the seating groove.

In addition, the clip part may further include a fixing part protruding from each of the protrusions in a direction facing each other.

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

Additionally, the coupling portion further includes a sawtooth-shaped protrusion, and the coupling portion can be inserted into a coupling groove of the cover plate.

Additionally, the cover assembly further includes 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.

Additionally, the ground terminal may be located on the lower surface of the cover plate, and the terminal may be disposed through the cover plate.

The ground terminal according to the embodiment having the above configuration can provide the advantageous effect of easy assembly process because it is provided with a clip portion and can fix the wire of the capacitor in a provisional assembly state.

In addition, by providing a clip portion where the wires of the capacitor are coupled in a fitting manner, it is possible to provide the 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 it does not flow, enabling an automated process rather than a manual process.

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

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

Since the present invention can be subject to various changes and can have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms containing ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, (on or under) includes both components that are in direct contact with each other or one or more other components that are formed (indirectly) between the two components. Additionally, when expressed as 'on or under', it can include not only the upward direction but also the downward direction based on one component.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

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

Referring to FIG. 1, the motor 1 according to the embodiment includes a cover assembly 2, a housing 10, a stator 20, a rotor 30, a rotating shaft 40, and a commutator 50 according to the embodiment. may include. 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 may form the outer shape of the motor 1.

An accommodating space may be formed inside the cover assembly 2 and the housing 10 by combining the cover assembly 2 and the housing 10. And, as shown in FIG. 1, a stator 20, a rotor 30, a rotating shaft 40, a commutator 50, etc. may be arranged in the receiving space.

The stator 20 causes 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 may include a plurality of magnets. The magnet forms a coil wound around the rotor 30 and a rotating magnetic field. These magnets may be arranged so that the N and S poles are alternately positioned in the circumferential direction around the rotation axis 40.

Meanwhile, the stator 20 may be manufactured by combining a plurality of split cores or may be manufactured in the form of a single core composed of one barrel.

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 made of a plurality of thin steel plates stacked on top of each other, but is not necessarily limited to this. For example, the rotor core may be formed as a single piece.

A plurality of slots may be protruding from the outer peripheral surface of the rotor core. The slot may be arranged to protrude in a radial direction based on the center of the rotor. At this time, the slot may be arranged to face the magnet. And, a coil is wound around each slot. At this time, an insulator may be installed in the slot. The insulator insulates the slot and the coil.

When 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 rotation shaft 40 also rotates. At this time, the rotating shaft 40 may be supported by the bearing 60.

FIG. 2 is a view showing the upper surface of the cover plate, and FIG. 3 is a view showing the lower surface of the cover plate.

2 and 3, the cover assembly 2 includes a cover plate 100, a connector 200 with a terminal 210 disposed therein, a brush assembly 300, a choke coil 400, and a hook. It may include a terminal 500, a capacitor 600, and a ground terminal 700.

As shown in FIG. 3, a brush assembly 300, a choke coil 400, a hook terminal 500, a capacitor 600, and a ground terminal 700 may be disposed on the lower surface of the cover plate 100. there is.

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

Accordingly, the cover plate 100 has a boss portion 110 disposed to protrude from the lower surface of the cover plate 100, a coupling groove 120 formed in the boss portion 110 so that one side of the ground terminal 700 is coupled, and a ground terminal. It may include a guide groove 130 that guides 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. 4 . When assembling the ground terminal 700 to the cover plate 100, the guide groove 120 may guide the engagement so that the ground terminal 700 is placed at a preset position. Additionally, the side of the guide groove 120 may support the ground terminal 700.

The connector 200 allows power supplied from an external power supply to be supplied to the motor 1. As shown in FIGS. 2 and 3 , the connector 200 may be disposed to penetrate the cover plate 100 . Also, a terminal 210 may be disposed inside the connector 200. Accordingly, power supplied from the outside may 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 containing the brush 310 therein, and an elastic member 330 included in the case 320 to provide elastic force. Accordingly, the brush 310 may be arranged to contact the commutator 50 . Accordingly, the brush 310 can transmit power supplied through the commutator 50 to the coil.

Meanwhile, the brush assembly 300 is connected to one side of the choke coil 400. And, the other side of the choke coil (400) is connected to the capacitor (600) through the hook terminal (500).

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

The hook terminal 500 may be disposed between the connector 200 and the choke coil 400. Additionally, 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. Additionally, the capacitor 600 may be electrically connected to the ground terminal 700 through a wire 610. Accordingly, the terminal 210 of the connector 200 to which the external power is connected may be electrically connected to the ground terminal 700.

Additionally, the capacitor 600 may emit noise through the ground terminal 700.

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

Figure 5 is a perspective view of a ground terminal according to an embodiment, Figure 6 is a front view of a ground terminal according to an embodiment, and Figure 7 is a side view of a ground terminal according to an embodiment. 5 to 7 clearly illustrate only the main features in order to clearly understand the ground terminal according to the embodiment, and as a result, various modifications of the illustration are expected, and the scope of the embodiment is determined by the specific shape shown in the drawings. does not need to be limited.

Referring to FIGS. 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. Additionally, the body portion 710, the ground portion 720, the clip portion 730, and the coupling portion 740 can be formed by bending a single sheet metal 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 ground portion 720 may be formed to extend from an upper area of the body portion 710. At this time, the ground portion 720 may be formed at the longitudinal center of the body portion 710.

Additionally, the ground portion 720 may be bent in the first direction (R in FIG. 7 ). Here, the first direction (R in FIG. 7 ) may be a direction toward the housing 10 based on the radial direction when the ground terminal 700 is coupled to the cover plate 200. And, the ground portion 720 may be elastically deformed. Accordingly, the ground portion 720 may be in contact with the inner surface of the housing 10.

Referring to FIG. 8, in a state where the coupling portion 740 is coupled to the coupling groove 120, the wire 610 is connected to the clip portion 730, and the ground portion 720 is inside the housing 10. Contact with the side. Since the ground portion 720 is bent to form a curved surface, the ground portion 720 is smoothly inserted into the inner surface of the housing 10 during the process of covering the housing 10 with the cover plate 100. And, in the process where the cover plate 100 covers the housing 10, the ground portion 720 is elastically deformed.

The clip portion 730 may be formed by bending both ends of the body portion 710 in the second direction (F in FIG. 7 ). Here, the second direction (F in FIG. 7 ) may be a direction toward the rotation axis 40 based on the radial direction when the ground terminal 700 is coupled to the cover plate 100. Accordingly, the second direction may be opposite to the first direction.

When viewed from the top of the ground terminal 700, the body portion 710 and the clip portion 730 may be formed in a U-shape. Also, when the cover plate 100 and the ground terminal 700 are coupled, the body portion 710 and the clip portion 730 may be guided by the guide groove 130 and placed at a preset position. Also, the side of the guide groove 120 can support the body portion 710 and the clip portion 730 of the ground terminal 700. At this time, a portion of the clip portion 730 may be disposed to deviate from the boss portion 110 in the second direction. In detail, a portion of the clip portion 730 may be disposed to be exposed in the guide groove 120 in the second direction.

5 to 7, the clip portion 730 is a body 731, two protrusions 732 extending from the top of the body 731, and a seat formed between the two protrusions 732. It may include a groove 733. Additionally, the clip portion 730 may include a fixing portion 734 that protrudes from the protruding portion 732 in a direction facing each other.

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

The protrusion 732 may be formed to protrude from the top of the body 731. And, since the protrusions 732 are arranged to be spaced apart from each other, a seating groove 733 may be formed between the protrusions 732.

The wire 610 may 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 a method such as welding.

As an example, the wire 610 is fixed to the clip portion 730 by a method such as welding, but it is not necessarily limited to this. For example, when the fixing part 734 is formed, the wire 610 may be fixed to the seating groove 733 by the fixing part 734. Accordingly, it is possible to prevent the wire 610 from flowing due to external force.

That is, the fixing part 734 can prevent the wire 610 disposed in the seating groove 733 from being separated.

Therefore, when the wire 610 is inserted into the clip portion 730, the capacitor 600 remains temporarily coupled to the ground terminal 700, making it inconvenient for the operator to hold the wire 610 for welding work. The odor is removed. In this way, the structure in which the capacitor 600 and the ground terminal 700 are temporarily coupled is a very advantageous structure in implementing an automated process.

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

The coupling portion 740 extends from the lower portion of the body portion 710. Additionally, the coupling portion 740 may be disposed on the same plane as the body portion 710.

The coupling portion 740 is coupled to the cover plate 100. Specifically, the cover plate 100 is provided with a protruding boss portion 110, and a coupling groove 120 may be formed in the boss portion 110. The coupling portion 740 is inserted into the coupling groove 120. and fixes the body portion 710 to the cover plate 100.

The coupling 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 may be implemented in a sawtooth shape so that once the coupling portion 740 is inserted into the coupling groove 120, it may be difficult to come off.

Although the present invention has been described above with reference to embodiments, those skilled in the art can make various modifications and modifications to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can change it. And, the differences related to these modifications and changes should be construed as being included in the scope of the present invention as defined in the appended claims.

1: Motor 2: Cover assembly
10: housing 20: stator
30: rotor 40: rotation axis
50: commutator 60: bearing
100: cover plate 110: boss part
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: protrusion
733: Seating groove 734: Fixing part
740: Coupling portion 741: Protrusion

Claims (17)

cover plate;
a ground terminal disposed on the cover plate; and
Includes a capacitor electrically connected to the ground terminal through a wire,
The ground terminal is,
body part;
a ground portion bent in a first direction at an upper portion of the body portion;
Clip portions extending from both sides of the body portion in a second direction opposite to the first direction; and
It includes a coupling portion extending from the lower portion of the body portion,
The clip part,
a plate-shaped body connected to the body part;
Two protrusions spaced apart from each other on the upper part of the body; and
It includes a seating groove formed between the protrusions,
The wire is seated in the seating groove,
The cover plate includes a concavely formed coupling groove,
A cover assembly in which the body portion is exposed when the coupling portion is inserted into the coupling groove. According to paragraph 1,
A cover assembly in which the wire is coupled to the clip portion by fitting. According to paragraph 1,
A cover assembly wherein the clip unit further includes a fixing part protruding from each of the protrusions in a direction facing each other. According to paragraph 1,
A cover assembly wherein the ground portion is formed at the longitudinal center of the body portion. According to paragraph 1,
A cover assembly wherein the coupling portion is formed on the same plane as the body portion. According to paragraph 1,
The cover assembly further includes a sawtooth-shaped protrusion. According to clause 6,
When the coupling groove and the coupling portion are coupled, the cover plate further includes a guide groove that guides coupling of the ground terminal,
A cover assembly where the side of the guide groove supports the clip portion. In clause 7,
The guide groove is a cover assembly formed in a U shape. According to paragraph 1,
It further includes a connector to which an external power source is connected,
A cover assembly in which the terminal disposed inside the connector is electrically connected to the ground terminal through a hook terminal disposed on the cover plate using a wire and the capacitor. According to clause 9,
A cover assembly wherein the ground terminal is located on a lower surface of the cover plate, and the terminal is disposed through the cover plate. axis of rotation;
a rotor coupled to the rotating shaft;
A commutator coupled to the rotating shaft;
A stator disposed outside the rotor;
a housing accommodating the rotor, the commutator, and the stator; and
Includes a cover assembly covering the housing,
The cover assembly,
cover plate;
a brush assembly disposed on the cover plate to contact the commutator;
a ground terminal disposed on the cover plate; and
It includes a capacitor connected to the ground terminal by a wire,
The ground terminal is,
body part;
a ground portion bent in a first direction at an upper portion of the body portion;
Clip portions extending from both sides of the body portion in a second direction opposite to the first direction; and
It includes a coupling portion extending from the lower portion of the body portion,
The clip part,
a plate-shaped body connected to the body part;
Two protrusions spaced apart from each other on the upper part of the body; and
It includes a seating groove formed between the protrusions,
The wire is seated in the seating groove,
The cover plate includes a concavely formed coupling groove,
A motor in which the body portion is exposed when the coupling portion is inserted into the coupling groove. According to clause 11,
A motor in which the wire is coupled to the clip portion by fitting. According to clause 11,
The clip unit further includes a fixing part protruding from each of the protrusions in a direction facing each other. According to clause 11,
The motor wherein the ground portion is formed at the longitudinal center of the body portion, and the coupling portion is formed on the same plane as the body portion. According to clause 11,
The motor wherein the coupling portion further includes sawtooth-shaped protrusions. According to clause 11,
The cover plate further includes a connector to which an external power source is connected, and a terminal disposed inside the connector is connected to the ground terminal and the brush through a choke coil, a hook terminal, and the capacitor disposed on the cover plate using a wire. A motor electrically connected to the assembly. According to clause 16,
The ground terminal is located on the lower surface of the cover plate, and the terminal is disposed through the cover plate.

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