KR101689549B1 - Electric Parking Brake Actuator with Housing Cover Formed Connector - Google Patents

Electric Parking Brake Actuator with Housing Cover Formed Connector Download PDF

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Publication number
KR101689549B1
KR101689549B1 KR1020150097636A KR20150097636A KR101689549B1 KR 101689549 B1 KR101689549 B1 KR 101689549B1 KR 1020150097636 A KR1020150097636 A KR 1020150097636A KR 20150097636 A KR20150097636 A KR 20150097636A KR 101689549 B1 KR101689549 B1 KR 101689549B1
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KR
South Korea
Prior art keywords
housing
housing cover
terminal
opening
motor
Prior art date
Application number
KR1020150097636A
Other languages
Korean (ko)
Inventor
장수길
김창화
이승오
Original Assignee
계양전기 주식회사
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Publication date
Application filed by 계양전기 주식회사 filed Critical 계양전기 주식회사
Priority to KR1020150097636A priority Critical patent/KR101689549B1/en
Application granted granted Critical
Publication of KR101689549B1 publication Critical patent/KR101689549B1/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

The present invention relates to an electric parking brake (EPB) actuator for generating power, and more particularly to an EPB actuator which can maintain desired tightness to improve reliability of the EPB actuator operating in a harsh environment and can be manufactured through automation as well. For this purpose, the EPB actuator according to the present invention comprises: a housing which has a side open in a direction in which a terminal of an internal motor is oriented; a housing cover which seals the open side of the housing by being thermally bonded to the open side of the housing, in which a connector terminal is formed to be connected to the terminal of the motor, in which an opening is formed in one side thereof to expose a portion on which the connector terminal is connected to the terminal of the motor, and in which a connector is formed in an integrated manner; and a cover which is mounted on the opening of the housing cover, and which is thermally bonded to the opening of the housing cover. In this case, the terminal of the motor and the connector terminal are spot-welded by an electrode bar of a spot welder entering through the opening before the cover is thermally bonded to the opening.

Description

[0001] The present invention relates to an EPB actuator having an EPB actuator formed on a housing cover,

The present invention relates to an EPB actuator for generating power, and more particularly, to provide an EPB actuator that operates in a harsh environment, while maintaining excellent airtightness and improving automation.

An EPB (Electric Parking Brake) actuator mounted on a caliper, which is a vehicle braking device, requires airtightness to protect internal components from external moisture and dust.

Conventionally, in the case of an EPB actuator driven in an unconditioned environment, a housing with a built-in motor is covered and fused to maintain airtightness.

FIG. 1 is a side view showing an EPB (Electric Parking Brake) actuator according to the related art, and FIG. 2 is a partial cross-sectional view of the housing and the housing cover shown in FIG.

1, the EPB actuator 10 includes a housing 20 in which a motor 11 is incorporated, and a housing cover 30 that covers an open upper portion of the housing 20, and the housing cover 30 Is formed with a connector 31 for connecting an external power cable.

2, a connector terminal 31T is built in a connector 31 formed in the housing cover 30, and a connector terminal 31T and a terminal 11T of the motor 11 are connected to a harness (13).

Therefore, when the external power supply cable is connected to the connector 31, the power is applied to the motor 11 through the connector terminal 31T, the wire harness 13, and the motor terminal 11T.

On the other hand, since the EPB actuator 10 is driven in a bad environment as described above, it is important to maintain the airtightness between the housing 20 and the housing cover 30. To this end, the housing cover 30 is mounted on the upper portion of the housing 20, and then the housing cover 30 and the housing 20 are integrally fused with each other through the heat.

In this manner, the housing cover 30 and the housing 20 are fused to each other to maintain the airtightness, so that the motor 11 can be protected and operated smoothly even under unfavorable circumstances.

However, during the process of manufacturing the EPB actuator, there is considerable difficulty in connecting the connector terminal 31T and the motor terminal 11T to the wire harness 13.

The connector terminal 31T formed on the housing cover 30 and the motor terminal 11T located on the inside of the housing 20 are connected by the wire harness 13 and then the housing cover 30 is connected to the housing 20 ) Should be covered and heat-welded. The terminals of the connector terminal 31T and the wire harness 13 and the terminals of the motor terminal 11T and the wire harness 13 are connected to each other before covering the housing cover 30 in order to improve the connection reliability between the terminals 11T and 31T and the wire harness 13. [ (13) are respectively spot-welded and fixed.

In the case of connecting the connector terminal 31T and the motor terminal 11T by the wire harness 13 and spot welding the terminals of the terminals 11T and 31T and the wire harness 13, It is difficult to build an automated facility.

Therefore, in the related art, there is a problem that the operator must directly perform the connection of the wire harness and the spot welding by hand.

As described above, the connection of the wire harness and the spot welding are manually performed, thereby increasing the defect occurrence rate and decreasing the productivity.

Korean Patent Laid-Open Publication No. 10-2012-0073854 (public date: 2012.07.05)

The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide an EPB actuator which is suitable for the automated production of an EPB actuator housing requiring airtightness and can significantly reduce airflow even if manual spot welding is performed. An object of the present invention is to provide an actuator.

According to an aspect of the present invention, there is provided an EPB actuator comprising: a housing opened in a direction toward a terminal of a built-in motor; And a cover which is seated in the opening portion of the housing cover to be heat-sealed, and a cover is formed on the housing cover, The terminal of the motor and the terminal of the connector are spot-welded by the electrode of the spot welder which has entered through the opening before the heat-welding of the motor.

According to a preferred embodiment of the present invention, a latching protrusion is formed to protrude outward of the housing cover around the opening of the housing cover. The lid includes an upper plate covering the opening portion, And the engaging jaws and the bent portions which are in contact with each other are thermally fused.

Further, according to a preferred embodiment of the present invention, a bent portion bent downward is formed on the entire edge of the housing cover, and the bent portion is thermally fused in contact with the upper outer surface of the housing.

As described above, the EPB actuator according to the present invention is configured such that the connector terminal and the motor terminal come into contact with each other when the housing cover is placed on the housing. In particular, in a state where the housing cover is covered with the housing, Spot welding is possible through the openings as exposed through the openings.

However, in the present invention, the connector terminal and the motor terminal can be spot-welded through the opening in a state where the housing and the housing cover are thermally welded, However, there is an advantage that it is easy to work even if proceeding by hand.

1 is a side view of an EPB (Electric Parking Brake) actuator according to the prior art,
Fig. 2 is a partial cross-sectional view of the housing and the housing cover shown in Fig. 1;
3 is a perspective view of an EPB actuator according to the present invention,
Fig. 4 is an exploded perspective view of the EPB actuator housing shown in Fig. 3 before fusion,
5 is a perspective view showing a state in which the housing cover shown in FIG. 4 is fused to the housing,
FIG. 6 is a cross-sectional view showing the state where the connector terminal and the motor terminal shown in FIG. 5 are spot-welded.

Hereinafter, preferred embodiments of the EPB actuator according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of the EPB actuator housing shown in FIG. 3 before fusion, and FIG. 5 is a cross-sectional view of the EPB actuator shown in FIG. 4 in which the housing cover is fused And FIG. 6 is a cross-sectional view illustrating the state where the connector terminal and the motor terminal shown in FIG. 5 are spot-welded.

3, a motor 110 is installed in a housing 120 of the EPB actuator 100, and a housing cover 130 is disposed on an upper portion of the housing 120. As shown in FIG.

An opening 131 is formed at one side of the housing cover 130 and a lid 150 is seated at the opening 131. A connector 140 is formed on the upper surface of the housing cover 130. Here, the position of the opening 131 formed in the housing cover 130 is as described below.

The motor 110 built in the housing 120 is positioned such that the terminal 110T thereof faces upward or toward the housing cover 130 so that the motor terminal 110T can be rotated through the opening 131 formed in the housing cover 130 And is located at a portion exposed to the outside.

On the other hand, a connector terminal 140T extending from the connector 140 to the inside of the housing cover 130 is located on the housing cover 130.

Here, the housing cover 130 is a mold injection product, and is integrally formed with the connector 140, the connector terminal 140T, and the housing cover 130 by insert injection molding of the connector terminal 140T.

The end of the connector terminal 140T extending inward of the housing cover 130 is located at a point in contact with the motor terminal 110T.

Therefore, when the housing cover 130 is placed over the housing 120, the end of the motor terminal 110T and the end of the connector terminal 140T are positioned to face each other. The motor terminal 110T and the connector terminal 140T may not be in contact with each other and may be located close to each other. It can be welded through subsequent spot welding or other welding methods.

The end of the motor terminal 110T and the end of the connector terminal 140T which are in contact with each other can be checked through the opening 131 formed in the housing cover 130.

Meanwhile, since the lid 150 is covered with the opening 131 of the housing cover 130 and is thermally fused, the airtightness is excellent.

More specifically, a locking protrusion 133 protruding upwardly is formed at the edge of the opening 131 of the housing cover 130 so as to surround the entire circumference of the opening 131.

The lid 150 which is seated in the opening 131 is formed with an upper plate 151 seated on the upper surface of the latching jaw 133 and a bent portion 153 bent downward at the edge of the upper plate 151 And the inner side surface of the bending portion 153 and the outer side surface of the engaging jaw 133 are in contact with each other.

Thus, in a state that the opening portion 131 of the housing cover 130 is covered with the lid 150, the latching jaw 133 and the bent portion 153 are thermally fused. Then, the engaging jaw 133 and the bending portion 153 are fused and integrated.

As the housing 120 and the housing cover 130 and the housing cover 130 and the cover 150 are thermally fused together, the housing 120, the housing cover 130, and the cover 150 are integrally formed, Lt; / RTI > Particularly, since the latching jaw 133 is formed upward in the entire circumference of the opening 131, even if a non-fused portion is formed due to a failure during the thermal fusion process, moisture located outside the housing cover 130 133 from flowing into the opening portion 131. Here, besides thermal fusion welding, fusion welding can be performed by various methods such as ultrasonic welding.

When the housing cover 130 is mounted on the upper end of the housing 120, the housing cover 130 is folded downwardly around the periphery of the housing cover 130, The bent portion 135 of the housing 120 contacts the outer surface of the upper end of the housing 120 and is thermally fused in this state. Therefore, foreign matter such as rainwater flowing downward from the housing cover 130 flows down along the bent portion 135 of the housing cover 130 along the outer surface of the housing 120.

The assembling relationship of the EPB actuator thus configured will be described below.

The housing cover 130 is seated on the upper portion of the housing 120 in which the motor 110 is housed. At this time, the bent portion 135 of the housing cover 130 comes into contact with the outer surface of the upper end of the housing 120. In this state, the bent portion 135 of the housing cover 130 and the upper- The housing 120 and the housing cover 130 are integrated with each other.

As described above, when the housing cover 130 is mounted on the upper end of the housing 120, the end of the connector terminal 140T and the end of the motor terminal 110T come into contact with or close to each other.

In this state, the electrode rod 161 of the spot welder is inserted through the opening 131 of the housing cover 130 to spot weld the end of the connector terminal 140T and the motor terminal 110T.

In spot welding, a robot for spot welding may be used, or in some cases, an operator may manually perform spot welding.

Then, the lid 150 is covered with the latching jaw 133 of the opening 131.

At this time, the outer surface of the latching protrusion 133 formed around the opening 131 and the inner surface of the bent portion 153 of the lid 150 are brought into contact with each other, and are thermally fused along the contacting portion to be integrated.

As the housing 120, the housing cover 130, and the cover 150 are integrated by thermal welding, foreign substances such as moisture and dust can be prevented from flowing into the interior of the EPB actuator 100, In the case of rainwater, it flows down from the cover 150 through the housing cover 130 and the outer surface of the housing 120. Therefore, it is possible to realize an automation operation because spot welding can be performed in a state where the housing cover 130 is fused to the housing 120, and the airtightness is excellent.

100: EPB actuator
110: motor
110T: Motor terminal
120: Housing
130: Housing cover
131:
133: hanging jaw
140: Connector
140T: Connector terminal
150: cover
151: top plate
153:

Claims (3)

A housing 120 opened in a direction toward the terminal 110T of the built-in motor 110,
A connector terminal 140T is formed so as to be fused to the opened portion of the housing 120 to close the opened portion of the housing 120 and to contact the terminal 110T of the motor 110, A housing cover 130 formed integrally with the connector 140 and having an opening 131 formed at one side thereof to expose a portion where the terminal 110T of the housing 110 contacts,
And a lid 150 which is seated and fused to the opening 131 of the housing cover 130,
Wherein the electrode terminal (110T) of the motor and the connector terminal (140T) are welded (S) by the electrode rod (161) of the welder which has entered through the opening (131) before welding the cover (150).
The method according to claim 1,
A locking protrusion 133 protrudes outward from the housing cover 130 around the opening 131 of the housing cover 130,
The lid 150 includes an upper plate 151 covering the opening 131 and a bent portion 153 bent at the edge of the upper plate 151 and in contact with the outer surface of the latching jaw 133, And the jaw (133) and the bent portion (153) are welded together.
The method according to claim 1,
Wherein a bent portion 135 is formed downwardly on the entire edge of the housing cover 130 and the bent portion 135 is fused in a state of being in contact with the outer surface of the upper end of the housing 120.
KR1020150097636A 2015-07-09 2015-07-09 Electric Parking Brake Actuator with Housing Cover Formed Connector KR101689549B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150097636A KR101689549B1 (en) 2015-07-09 2015-07-09 Electric Parking Brake Actuator with Housing Cover Formed Connector

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Application Number Priority Date Filing Date Title
KR1020150097636A KR101689549B1 (en) 2015-07-09 2015-07-09 Electric Parking Brake Actuator with Housing Cover Formed Connector

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KR101689549B1 true KR101689549B1 (en) 2016-12-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124037A1 (en) * 2021-06-14 2022-12-16 Hitachi Astemo France COVER FOR VEHICLE BRAKE GEAR MOTOR HOUSING, INCLUDING ELECTRICAL CONNECTOR

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007014101A (en) * 2005-06-29 2007-01-18 Tgk Co Ltd Motor actuator
KR20120048232A (en) * 2010-11-05 2012-05-15 동아전기부품 주식회사 Actuator for electric parking brake system
KR20120073854A (en) 2010-12-27 2012-07-05 엘지이노텍 주식회사 Eps motor and manufacturing method having the same
KR101321719B1 (en) * 2013-04-17 2013-10-28 계양전기 주식회사 Actuator assembly for electromechanical parking brake
KR20140118037A (en) * 2013-03-28 2014-10-08 주식회사 제이에스테크 Motor combination device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007014101A (en) * 2005-06-29 2007-01-18 Tgk Co Ltd Motor actuator
KR20120048232A (en) * 2010-11-05 2012-05-15 동아전기부품 주식회사 Actuator for electric parking brake system
KR20120073854A (en) 2010-12-27 2012-07-05 엘지이노텍 주식회사 Eps motor and manufacturing method having the same
KR20140118037A (en) * 2013-03-28 2014-10-08 주식회사 제이에스테크 Motor combination device
KR101321719B1 (en) * 2013-04-17 2013-10-28 계양전기 주식회사 Actuator assembly for electromechanical parking brake

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124037A1 (en) * 2021-06-14 2022-12-16 Hitachi Astemo France COVER FOR VEHICLE BRAKE GEAR MOTOR HOUSING, INCLUDING ELECTRICAL CONNECTOR

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