KR20160041502A - Motor for electric power steering device - Google Patents

Motor for electric power steering device Download PDF

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Publication number
KR20160041502A
KR20160041502A KR1020140135578A KR20140135578A KR20160041502A KR 20160041502 A KR20160041502 A KR 20160041502A KR 1020140135578 A KR1020140135578 A KR 1020140135578A KR 20140135578 A KR20140135578 A KR 20140135578A KR 20160041502 A KR20160041502 A KR 20160041502A
Authority
KR
South Korea
Prior art keywords
motor
circuit board
printed circuit
terminal
electric power
Prior art date
Application number
KR1020140135578A
Other languages
Korean (ko)
Inventor
신준호
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020140135578A priority Critical patent/KR20160041502A/en
Publication of KR20160041502A publication Critical patent/KR20160041502A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0421—Electric motor acting on or near steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/0094—Structural association with other electrical or electronic devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/032—Reciprocating, oscillating or vibrating motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/0094—Arrangements for regulating or controlling the speed or torque of electric DC motors wherein the position is detected using the ripple of the current caused by the commutator

Abstract

Disclosed is a motor for an electric power steering device to prevent conducted emission noise. According to an aspect of the present invention, provided is the motor for an electric power steering device which has a control part which is installed in a motor case and improves the electromagnetic compatibility (EMC) of the motor. The control part includes a PCB connected to a power terminal; a capacitor which is installed on the PCB and absorbs the ripple of a current flowing in the motor; and a mounting member which fixes the PCB to the inside of the motor case.

Description

[0001] The present invention relates to a motor for an electric power steering device,

The present invention relates to a motor, and more particularly, to a motor for an electric power steering device for improving electromagnetic compatibility (EMC) of a motor used in an electric power steering apparatus.

2. Description of the Related Art [0002] Generally, an electric power steering apparatus is an apparatus for changing a traveling direction of a vehicle according to a driver's intention, and is a device for assisting a driver to advance a vehicle in a desired direction by changing a turning center of a front wheel of the vehicle to be.

Such an electric power steering apparatus includes an electric motor for outputting an auxiliary torque to a steering wheel of a vehicle, a control device for controlling the driving of the electric motor, and an electric motor for transmitting the driving force of the electric motor to the steering shaft, And a reduction gear unit connected to the motor.

At this time, a DC motor is applied to the electric motor of the electric power steering device, and the conduction emission (CE) noise is generated according to the use of the DC motor. Since this conduction emission noise causes an operation error of the electric power steering device, a structure for improving the conduction emission electromagnetic wave has been proposed. That is, a DC motor used in a conventional electric power steering device is structured such that a capacitor for absorbing current ripple can not be installed at the plus terminal and the minus terminal, which are the power terminals of the motor, due to a space shortage inside the motor.

Accordingly, although a shield cable is applied to a wire portion of a motor to improve conduction emission noise, there is a problem that the cost of the shield cable is high.

A motor for an electric power steering apparatus according to an embodiment of the present invention can improve a conduction emission noise by providing a capacitor for absorbing a ripple of a current in a motor.

According to an aspect of the present invention, there is provided a motor for an electric power steering device provided in a motor case and provided with a controller for improving electromagnetic compatibility (EMC) of the motor, Board; A capacitor installed on the printed circuit board to absorb ripples of a current flowing in the motor; And a mounting member for fixing the printed circuit board in the motor case.

Also, the printed circuit board may be provided with a conductive member that is soldered to the positive terminal and the negative terminal of the power supply terminal, and the capacitor may be provided on a printed circuit board adjacent to the respective terminals.

The mounting member may include: a support plate provided on the motor case to seat the printed circuit board, the support plate having a coupling hole; And a fastening bolt coupled to the coupling hole through a through hole formed in the printed circuit board.

A pad may be provided between the printed circuit board and the support plate or between the printed circuit board and the fastening bolt.

In addition, the printed circuit board may be provided with a conductive member connected to the positive terminal and the negative terminal of the power supply terminal, and the positive terminal and the negative terminal may be respectively provided with a connector connected to the conductive member in a one-

The motor for an electric power steering apparatus according to an embodiment of the present invention has a cost reduction effect by using a capacitor instead of a shield cable for improving conduction emission noise.

In addition, by providing a capacitor inside the motor case, the conduction emission noise can be effectively reduced significantly, and ease of connection with the power supply terminal can be ensured.

On the other hand, the size and the cost of the control device can be reduced by selectively adopting the kind of the capacitor.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in detail with reference to the following drawings, which illustrate preferred embodiments of the present invention, and thus the technical idea of the present invention should not be construed as being limited thereto.
1 is an exploded perspective view showing a state in which a control unit provided in a motor for an electric power steering apparatus according to an embodiment of the present invention is installed in a motor case.
FIG. 2 is an assembled perspective view of FIG. 1. FIG.
3 is a perspective view showing a state where a capacitor of a control apparatus according to another embodiment of the present invention is installed on a printed circuit board.
4 is a view showing a state in which a conductive member of a control apparatus according to another embodiment of the present invention is connected to a power supply terminal.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided to fully convey the spirit of the present invention to a person having ordinary skill in the art to which the present invention belongs. The present invention is not limited to the embodiments shown herein but may be embodied in other forms. For the sake of clarity, the drawings are not drawn to scale, and the size of the elements may be slightly exaggerated to facilitate understanding.

FIG. 1 is an exploded perspective view showing a state where a control device provided in a motor for an electric power steering apparatus according to an embodiment of the present invention is installed in a motor case, and FIG. 2 is an assembled perspective view of FIG.

1 and 2, a motor 100 for an electric power steering apparatus according to an embodiment of the present invention includes a motor case 110, a motor (not shown) installed in the motor case 110, , And a control unit for improving electromagnetic compatibility (EMC) of the motor. At this time, the motor used in the motor 100 for the electric power steering apparatus is a conventional DC motor composed of a rotor provided to rotate together with the rotation shaft and a stator provided around the rotor, although not shown in detail. It will be omitted. That is, the motor is installed in the motor case 110 together with the control unit and provided to the motor 100 for the electric power steering apparatus.

The motor case 110 houses therein a motor, and a terminal portion 112 for connection with the power terminal 150 is formed to supply power to the motor. That is, the control unit and the power terminal 150, which will be described later, are connected through the terminal unit 112.

It should be understood that the motor case 110 is formed so as to enclose and protect the components provided inside the motor and the motor case 110, and only a part of the motor case 110 shown in FIGS. 1 and 2 is shown.

The controller includes a printed circuit board 120, a capacitor 130 installed on the printed circuit board 120, a conductive member 125 and a mounting member 140 for fixing the printed circuit board 120 in the motor case 110 .

The printed circuit board 120 is connected to the power supply terminal 150 through the conductive member 125. The printed circuit board 120 is an insulating substrate on which a conductor circuit is formed, and electric parts, that is, various elements are mounted and connected in a circuit. For example, a power element, a microcomputer, or the like may be mounted on the printed circuit board 120. According to an embodiment of the present invention, the printed circuit board 120 is provided with a capacitor 130 for absorbing a ripple of a current flowing in the motor together with various devices.

Meanwhile, a through hole 124 is formed in the printed circuit board 120. The through hole 124 is for fixing the printed circuit board 120 to the motor case 110 by a mounting member 140 to be described later and will be described below again.

The capacitor 130 serves to absorb the ripple of the current flowing in the motor. The capacitors 130 are installed on the printed circuit board 120 in the vicinity of the power supply terminal 150, that is, in the vicinity of the conductive member 125 connected to the power supply terminal 150. At this time, the capacitors 130 are provided in the vicinity of the conductive member 125 connected to the positive terminal 150a and the negative terminal 150b of the power supply terminal 150, respectively, in order to effectively absorb the ripple.

Although the capacitor 130 according to the embodiment of the present invention is shown as two, it is not limited thereto. As shown in FIG. 3, a capacitor 130 ' . At this time, the capacitor 130 'installed in FIG. 3 has the effect of two capacitors commonly used as an X2Y-type capacitor. The use of such a capacitor 130 'has the effect of reducing the size of the printed circuit board 120 and reducing the number of elements.

1 and 2, the conductive member 125 is connected to the power supply terminal 150, and is mounted on the printed circuit board 120 such that a positive current and a negative current flow through the printed circuit board 120. The conductive member 125 is a conductor made of copper or the like having excellent electrical conductivity and is provided in the form of a rod for easy electrical connection with the power supply terminal 150 and electrically connected to the power supply terminal 150 by soldering do. The conductive member 125 is shown to be bent a plurality of times toward the power terminal 150 inserted into the motor case 110 but is not limited thereto and may be electrically connected to the power terminal 150. [ Any shape is acceptable.

According to another embodiment of the present invention, in order to improve workability of connecting the conductive member 125 to the power terminal 150 by soldering, as shown in FIG. 4, the power terminal 150 ' A connector 155 'that is connected to the positive terminal 150a and the negative terminal 150b with the conductive member 125 in a one-touch manner may be provided. For example, the connector 155 'provided at the plus terminal 150a and the minus terminal 150b has a clamping terminal terminal structure capable of fixing the end of the conductive member 125 connected to the printed circuit board 120. That is, by fitting the end of the conductive member 125 into the clamping terminal terminal, it is possible to assemble easily.

In addition, although the connector 155 'is shown on the power terminal 150' and connected to the conductive member 125, the connector 155 'may be provided on the conductive member 125 to be connected to the power terminal have.

The printed circuit board 120 electrically connected to the power terminals 150 and 150 'is fixed in the motor case 110 by the mounting member 140 as shown in FIGS. The mounting member 140 includes a fastening bolt 145 for fastening the support plate 142 and the printed circuit board 120 on the support plate 142. [

The support plate 142 is provided in the motor case 110 so that the printed circuit board 120 is seated. A coupling hole 144 is formed in the support plate 142. The coupling hole 144 may be threaded and screwed to the fastening bolt 145.

The fastening bolts 145 serve to fix the printed circuit board 120 to the motor case 110 and to damage the printed circuit board 120. The fastening bolt 150 is coupled to the coupling hole 144 through the through hole 124 formed in the printed circuit board 120. At this time, when the printed circuit board 120 is fixed through the fastening bolts 145, the head portion 145a of the fastening bolt 145 is extended in the radial direction to disperse the load pressing the printed circuit board 120 And a portion 15b.

Between the printed circuit board 120 and the support plate 142, a pad 148 for preventing breakage of the printed circuit board 120 may be further provided. Although the pad 148 is shown to be disposed between the printed circuit board 120 and the support plate 142, it may also be provided between the printed circuit board 120 and the head 145a of the fastening bolt 145 .

As described above, since the printed circuit board 120 on which the capacitor 130 is installed is fixed in the motor case 110, the conduction emission noise generated in the motor can be effectively reduced, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

100: Motor for electric power steering device
110: Motor case
120: printed circuit board
125: conductive member
130, 130 ': Capacitors
140: mounting member
150, 150: power terminal

Claims (5)

A motor for an electric power steering apparatus provided in a motor case and provided with a control section for improving electromagnetic compatibility (EMC) of the motor,
Wherein,
A printed circuit board connected to a power supply terminal;
A capacitor installed on the printed circuit board to absorb ripples of a current flowing in the motor; And
And a mounting member for fixing the printed circuit board in the motor case. The method according to claim 1,
Wherein the printed circuit board is provided with a conductive member that is solder-connected to the positive terminal and the negative terminal of the power supply terminal,
Wherein the capacitors are respectively provided on a printed circuit board connected to the respective terminals. The method according to claim 1,
Wherein the mounting member comprises:
A support plate provided on the motor case to seat the printed circuit board, the support plate having a coupling hole; And
And a fastening bolt coupled to the coupling hole through a through hole formed in the printed circuit board. The method of claim 3,
And a pad is provided between the printed circuit board and the support plate or between the printed circuit board and the fastening bolt. The method according to claim 1,
Wherein the conductive member is connected to the plus terminal and the minus terminal of the power supply terminal,
Wherein the positive terminal and the negative terminal are each provided with a connector connected to the conductive member in a one-touch manner.
KR1020140135578A 2014-10-08 2014-10-08 Motor for electric power steering device KR20160041502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140135578A KR20160041502A (en) 2014-10-08 2014-10-08 Motor for electric power steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140135578A KR20160041502A (en) 2014-10-08 2014-10-08 Motor for electric power steering device

Publications (1)

Publication Number Publication Date
KR20160041502A true KR20160041502A (en) 2016-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140135578A KR20160041502A (en) 2014-10-08 2014-10-08 Motor for electric power steering device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109412353A (en) * 2018-12-05 2019-03-01 张祝萍 A kind of wiring connections for the pin slot sectionalized busbar in generating set
CN110474515A (en) * 2019-09-19 2019-11-19 曹兵 A kind of novel governor of the convex magnet ring of disc differential with start and stop defencive function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109412353A (en) * 2018-12-05 2019-03-01 张祝萍 A kind of wiring connections for the pin slot sectionalized busbar in generating set
CN109412353B (en) * 2018-12-05 2019-12-24 佛山市奥力博动力工程有限公司 Wiring connection device for pin slot segmented bus in generator set
CN110474515A (en) * 2019-09-19 2019-11-19 曹兵 A kind of novel governor of the convex magnet ring of disc differential with start and stop defencive function
CN112910215A (en) * 2019-09-19 2021-06-04 曹兵 Speed regulator and operation method thereof
CN112910215B (en) * 2019-09-19 2021-12-21 泉州台商投资区茂源工业设计有限公司 Speed regulator and operation method thereof

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E902 Notification of reason for refusal
E601 Decision to refuse application