KR102304161B1 - Brush for electrical equipment - Google Patents

Abstract

Disclosed is a brush for electrical equipment. The brush for electrical equipment of the present invention includes: a body unit; a connection unit which is installed in a shape of penetrating the body unit and is made of a conductor material; a connector unit which is connected to a lead wire, is positioned outside the body unit, and allows the connection unit to penetrate the same; and an anti-separation unit which is extended from the connection unit, is positioned outside the connector unit, and constrains the movement of the connector unit.

Description

Brush for electrical equipment {BRUSH FOR ELECTRICAL EQUIPMENT}

The present invention relates to a brush for an electric device, and more particularly, to a brush for an electric device with improved durability.

In general, a brush for electric equipment is an important part that conducts and commutates by contacting the surface of a commutator or slip ring of various rotating equipment such as a cross-current rectifier for an electric machine. The brush for electric equipment used in the commutator motor is installed under the commutator.

The brush for electric equipment is used to supply the excitation current of a medium or large generator, and the lead wire is connected to the brush for electric equipment to flow the current.

Conventionally, the brush for an electric device is connected to the lead wire by making a hole in the brush for an electric device, inserting a lead wire into the hole, and filling the hole with copper powder and compacting it.

However, if the lead wire is connected to the brush for electric equipment in the same way as above, the connection strength may be weakened due to overheating due to vibration and overcurrent of the generator, and the connection between the lead wire and the brush for electric equipment may be damaged due to careless handling. There is a problem in that the phenomenon of breakage or separation of the lead wire occurs. Therefore, there is a need to improve it.

The background technology of the present invention is published in Republic of Korea Patent Publication No. 10-0449634 (registered on Sept. 10, 2004, title of invention: an alarm device notifying the replacement time of the carbon brush).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a brush for an electric device capable of improving a phenomenon in which a connection portion between a lead wire and a brush for an electric device is damaged or the lead wire is separated.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The brush for an electric device according to the present invention includes a body part, a connector part which is installed in a shape penetrating the body part and made of a conductor material, and a connector part and a connection part connected to a lead wire and located outside the body part and through which the connection part is made. It extends and is located on the outside of the connector portion and may include a separation preventing portion for restricting the movement of the connector portion.

In addition, the body portion may include a body portion having a rectangular parallelepiped shape and a connection hole portion forming a hole penetrating the body portion in the width direction so that the connection portion is located.

In addition, the connection hole portion includes an inner hole portion forming a hole penetrating through the body portion in the width direction, a first outer hole portion communicating with one side of the inner hole portion and having an inner diameter larger than the inner diameter of the inner hole portion, and the inner hole portion communicating with the other side of the inner hole portion It may include a second outer hole portion having an inner diameter greater than the negative inner diameter.

In addition, the connector unit may include a first connector located in the first outer hole portion and connected to the lead wire, and a second connector located in the second outer hole portion and connected to the lead wire.

In addition, the body portion forms a groove portion communicating with the first outer hole portion on one side of the main body portion, and a first guide groove portion in which a lead wire connected to the first connector is seated, and a second outer hole portion on the other side of the body portion communicates with the body portion It may include a second guide groove to form a groove to be used and to seat the lead wire connected to the second connector on the inside.

In addition, the separation preventing unit may include a first constraining member located outside the first connector and constraining movement of the first connector, and a second constraining member located outside the second connector and constraining movement of the second connector. have.

In addition, the first constraining member and the second constraining member may be integrally formed with the connecting portion, and may be deformed in shape by riveting to be fixed to the outside of the first constraining member and the second constraining member.

In addition, the body portion may further include a guide hole portion for forming a hole penetrating the body portion in the longitudinal direction for the insertion of the guide pin.

In addition, the guide hole portion may be provided with a plurality of holes penetrating the body portion in the longitudinal direction.

In addition, the guide hole includes a first guide hole and a second guide hole that are installed in parallel, and a connection hole may be positioned between the first guide hole and the second guide hole.

In the brush for electric equipment according to the present invention, since the connector part to which the lead wire is connected is fixed by the connector part whose shape is deformed by the riveting process, the detachment of the connector part can be easily restrained, and damage to the body part connected to the lead wire can be prevented. can be prevented

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view schematically illustrating a structure of a brush for an electric device according to an embodiment of the present invention.
2 is an exploded perspective view of a brush for an electric device according to an embodiment of the present invention.
3 is a cross-sectional view of a brush for an electric device according to an embodiment of the present invention.
4 is a cross-sectional view of a body portion according to an embodiment of the present invention.
5 is a plan view of a body part according to an embodiment of the present invention.
6 is a front view of the body according to an embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Also, when it is described that a component is "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that “or, each component may be “connected,” “coupled,” or “connected” through another component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless specifically stated to the contrary, and when “C to D” is used, it means that there is no specific contrary description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

Hereinafter, a brush for an electric device according to an embodiment of the present invention will be described.

1 is a perspective view schematically showing the structure of a brush 1 for an electric device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the brush 1 for an electric device according to an embodiment of the present invention. , Figure 3 is a cross-sectional view of the brush (1) for an electric device according to an embodiment of the present invention.

The brush (1) for an electric device according to an embodiment of the present invention is installed in a shape penetrating the body portion (10) and the body portion (10) and includes a connection portion (60) made of a conductive material, and a lead wire (100). ), located outside the body portion 10, extending from the connector portion 70 and the connection portion 60 through which the connection portion 60 penetrates, and located outside the connector portion 70, the connector portion 70 It may include a departure prevention unit 80 that restricts the movement of the .

The brush 1 for electric equipment according to the present invention can be used as a generator brush for all DC motors, a carbon brush for forklifts and small vehicles, a carbon brush for AC commutator and slip ring, a vacuum cleaner, a mixer, and a juicer. It can be used for home appliances including washing machines and toys, industrial carbon contacts, and power tools including electric drills and electric planers.

The body portion 10 is made of an electrically conductive material, is installed inside an electric grinder and a high-speed rotating machine, and comes in contact with the commutator or the surface of the slip ring to serve as an electric current and a commutator. The body portion 10 according to an embodiment of the present invention includes at least one of the body portion 20, the connection hole portion 30, the guide hole portion 40, the guide groove portion 50, and the mounting groove portion 58. can do.

Figure 4 is a cross-sectional view of the body portion 10 according to an embodiment of the present invention, Figure 5 is a plan view of the body portion 10 according to an embodiment of the present invention, Figure 6 is an embodiment of the present invention It is a front view of the body portion 10 along the

4 to 6 , the main body 20 is made of an electrically conductive material and has a rectangular parallelepiped shape. The main body 20 is a member obtained by sintering a mixture of excitation, pure graphite powder, or graphite powder and metal powder. The main body 20 is a device for supplying electricity to the rotating commutator, which is a component of the motor, and may supply electricity to the commutator of the motor by maintaining a constant contact force between the commutator surface and the main body 20 .

And at the end of the body portion 20, a mounting groove 58 having a concave groove shape is installed in order to install the spring pressing portion. A part of the spring pressing part is installed in the mounting groove part 58, and the spring pressing part presses the body part 20 in a direction toward the commutator. Absorbs vibration and shock transmitted to the main body 20 by the spring pressing unit installed in the mounting groove 58, and moves the main body 20 in the direction toward the commutator by the amount of wear of the main body 20 to provide stable power supply can be made.

The main body 20 may be manufactured by kneading graphite powder with a binder such as a thermosetting resin and curing it. Alternatively, the main body 20 may be manufactured by kneading graphite powder with a binder such as a thermosetting resin or pitch, and sintering at a low temperature to carbonize the binder component. Alternatively, the body portion 20 may be molded in various methods, such as a method of calcining at a high temperature to graphitize at least a portion of the carbon component to manufacture the body portion 20 .

The connection hole 30 is capable of various modifications within the technical idea of forming a hole penetrating the body portion 20 in the width direction W so that the connection portion 60 is located. The connection hole 30 has a groove shape having a step so that the connector 70 and the separation preventing part 80 are installed on both sides of the main body 20 .

The connection hole portion 30 according to an embodiment of the present invention includes an inner hole portion 32 , a first outer hole portion 34 , and a second outer hole portion 36 .

The inner hole portion 32 forms a hole penetrating the body portion 20 in the width direction (W). The inner hole 32 is located in the central portion of the width direction W of the main body 20 , and forms a hole having the same shape as that of the connecting portion 60 . The inner hole portion 32 according to an embodiment of the present invention forms a hole having a circular cross section, and the connecting portion 60 installed inside the inner hole portion 32 has a circular pipe shape.

The first outer hole portion 34 communicates with one side of the inner hole portion 32 and forms a hole having an inner diameter greater than the inner diameter of the inner hole portion 32 . A step is formed at the boundary between the inner hole portion 32 and the first outer hole portion 34 , and the connector part 70 is spanned over the step facing the first outer hole portion 34 to restrict movement.

The second outer hole portion 36 communicates with the other side of the inner hole portion 32 and forms a hole having an inner diameter greater than the inner diameter of the inner hole portion 32 . A step is also formed at the boundary between the inner hole portion 32 and the second outer hole portion 36 , and the connector portion 70 is spanned over the step facing the second outer hole portion 36 to restrict movement.

The guide hole 40 is capable of various modifications within the technical idea of forming a hole penetrating the main body 20 in the longitudinal direction D for the insertion of the guide pin 90 . In addition, the guide hole portion 40 may be provided with a plurality of holes penetrating the body portion 20 in the longitudinal direction (D).

The guide hole part 40 according to an embodiment of the present invention includes a first guide hole part 42 and a second guide hole part 44 installed in parallel, and a first guide hole part 42 and a second guide hole part ( 44), the connection hole 30 may be positioned. The guide pin 90 is in the shape of a rod provided in the brush holder, and the pair of guide pins 90 is moved to the inside of the body 20 through the first guide hole 42 and the second guide hole 44 . is inserted Since the two guide pins 90 are respectively installed in the first guide hole portion 42 and the second guide hole portion 44 , the body portion 20 is movable in the longitudinal direction (D) along the guide pin 90 . may be installed, and the movement of the main body 20 may be made more stably.

Since the guide groove 50 is provided with a groove on the outer surface of the main body 20 into which the lead wire 100 connected to the connector 70 is inserted, various modifications are carried out within the technical idea to prevent damage to the lead wire 100 . is possible The body part 10 according to an embodiment of the present invention forms a groove part communicating with the first outer hole part 34 on one side of the body part 20 and a lead wire connected to the first connector 72 ( A lead wire connected to the second connector 74 by forming a first guide groove 52 in which 100 is seated, and a groove communicating with the second outer hole 36 on the other side of the main body 20 . (100) may include a second guide groove portion 54 to be seated on the inside.

Since the lead wire 100 connected to the first connector 72 is located inside the first guide groove 52 , the lead wire 100 connected to the first connector 72 protrudes to the outside of the main body 20 . doesn't happen Therefore, it is possible to prevent damage to the lead wire 100, and it is possible to reduce the maintenance cost.

In addition, since the lead wire 100 connected to the second connector 74 is located inside the second guide groove 54 , the lead wire 100 connected to the second connector 74 to the outside of the main body 20 is does not protrude Therefore, it is possible to prevent damage to the lead wire 100, and it is possible to reduce the maintenance cost.

2 and 3, the connection part 60 is installed in a shape penetrating the body part 10, and various modifications are possible within the technical idea made of a conductor material. The connection part 60 according to an embodiment of the present invention is made of an electrically conductive material, and has a pipe shape penetrating the body part 20 in the width direction (W).

The connector part 70 is connected to the lead wire 100 and is located on the outside of the body part 10 , and various modifications can be made within the technical idea in which the connection part 60 penetrates. The connector portion 70 according to an embodiment of the present invention is located in the first outer hole portion 34 and is located in the first connector 72 and the second outer hole portion 36 connected to the lead wire 100, A second connector 74 connected to the lead wire 100 may be included.

The first connector 72 and the second connector 74 are also made of an electrically conductive material, and a hollow for locating the connecting part 60 is provided inside the body made of a metal plate shape.

The separation prevention part 80 extends from the connection part 60 and is located on the outside of the connector part 70 , and various modifications are possible within the technical concept of restricting the movement of the connector part 70 . The separation prevention part 80 according to an embodiment of the present invention is located outside the first connector 72 and constrains the movement of the first connector 72, the first restraining member 82 and the second connector ( 74 , and may include a second restraining member 84 for restricting movement of the second connector 74 .

The first constraining member 82 and the second constraining member 84 are integrally formed with the connecting portion 60 , and the shape of the first constraining member 82 and the second constraining member 84 is deformed by riveting. It can be fixed on the outside. The first constraining member 82 may be connected to one side of the connecting portion 60 , and the second constraining member 84 may be connected to the other side of the connecting unit 60 .

Hereinafter, an operating state of the brush 1 for an electric device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The lead wire 100 is connected to the first connector 72 and the second connector 74, respectively. The first connector 72 is installed at a position facing the first outer hole portion 34 , and the second connector 74 is installed at a position facing the second outer hole portion 36 .

A first constraining member 82 and a second constraining member 84 are respectively connected to both sides of the connecting portion 60 . The connection part 60 material is installed in a shape penetrating the first connector 72 , the connection hole part 30 , and the second connector 74 . And by riveting the first restraining member 82 and the second restraining member 84, the shape of the first restraining member 82 and the second restraining member 84 is deformed.

Therefore, the first connector 72 between the first restraining member 82 and the body portion 10, and the second connector 74 between the second restraining member 84 and the body portion 10 movement is constrained. In addition, the first connector 72 and the second connector 74 are electrically connected through the connecting portion (60).

Electricity transferred to the first connector 72 and the second connector 74 through the lead wire 100 is transferred to the connection unit 60 . And it is installed inside the electric grinder and high-speed rotating machine through the body part 10 facing the connection part 60 to supply electricity to the commutator.

On the other hand, the lead wire 100 connected to the first connector 72 is located inside the first guide groove part 52 , and the lead wire 100 connected to the second connector 74 is the second guide groove part 54 . It is located on the inside, and since the lead wire 100 does not protrude to the outside of the body portion 10, it is possible to prevent damage and breakage of the lead wire 100, thereby reducing maintenance costs.

As described above, according to the present invention, since the connector part 70 to which the lead wire 100 is connected is fixed by the connector part 70 whose shape is deformed by the riveting process, the connector part 70 is easily detached. It can be restrained, and it is possible to prevent damage to the body portion 10 connected to the lead wire 100 .

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

1: Brush for electrical equipment
10: body part
20: body part
30: connection hole 32: inner hole 34: first outer hole 36: second outer hole
40: guide hole portion 42: first guide hole portion 44: second guide hole portion
50: guide groove 52: first guide groove 54: second guide groove
58: mounting groove
60: connection
70: connector 72: first connector 74: second connector
80: separation prevention part 82: first restraining member 84: second restraining member
90: guide pin 100: lead wire
W: width direction D: length direction

Claims (9)

body part;
a connection part installed in a shape penetrating the body part and made of a conductive material;
a connector part connected to a lead wire and positioned outside the body part, through which the connection part penetrates; and
A brush for an electric device comprising a; extending from the connection part, located outside the connector part, and a separation preventing part restricting movement of the connector part.
According to claim 1,
The body portion, the body portion having a rectangular parallelepiped shape; and
A brush for an electric device including a; a connection hole portion for forming a hole penetrating the body portion in the width direction so that the connection portion is located.
3. The method of claim 2,
The connection hole portion may include: an inner hole portion forming a hole penetrating the body portion in a width direction;
a first outer hole portion communicating with one side of the inner hole portion and having an inner diameter greater than the inner diameter of the inner hole portion; and
A brush for an electric device comprising a; communicates with the other side of the inner hole portion, the second outer hole portion having an inner diameter greater than the inner diameter of the inner hole portion.
4. The method of claim 3,
The connector part may include: a first connector positioned in the first outer hole part and connected to the lead wire; and
and a second connector located in the second outer hole and connected to the lead wire.
5. The method of claim 4,
The separation preventing unit may include: a first constraining member positioned outside the first connector and constraining movement of the first connector; and
and a second restraining member positioned outside the second connector and constraining movement of the second connector.
6. The method of claim 5,
The first constraining member and the second constraining member are integrally formed with the connection part, and are deformed in shape by riveting to be fixed to the outside of the first constraining member and the second constraining member.
3. The method of claim 2,
The body portion, for the insertion of the guide pin, a guide hole for forming a hole penetrating the body portion in the longitudinal direction; Electric device brush further comprising a.
8. The method of claim 7,
The guide hole portion, a brush for an electric device provided with a plurality of holes penetrating the body portion in the longitudinal direction.
9. The method of claim 8,
The guide hole portion includes a first guide hole portion and a second guide hole portion installed in parallel, the brush for an electric device in which the connection hole portion is located between the first guide hole portion and the second guide hole portion.

Images