KR20130008352A - Electric parking brake in vehicle - Google Patents

Electric parking brake in vehicle Download PDF

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Publication number
KR20130008352A
KR20130008352A KR1020110069055A KR20110069055A KR20130008352A KR 20130008352 A KR20130008352 A KR 20130008352A KR 1020110069055 A KR1020110069055 A KR 1020110069055A KR 20110069055 A KR20110069055 A KR 20110069055A KR 20130008352 A KR20130008352 A KR 20130008352A
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KR
South Korea
Prior art keywords
screw
nut
parking brake
bolt
damper
Prior art date
Application number
KR1020110069055A
Other languages
Korean (ko)
Inventor
정민규
Original Assignee
현대모비스 주식회사
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 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020110069055A priority Critical patent/KR20130008352A/en
Publication of KR20130008352A publication Critical patent/KR20130008352A/en

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    • 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
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/101—Disposition of hand control by means of a pull rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2018—Screw mechanisms with both screw and nut being driven, i.e. screw and nut are both rotating

Abstract

An invention for an electronic parking brake apparatus is disclosed. The disclosed electronic parking brake device includes: a bolt screw part that is rotated by receiving power from a driving member, and a nut screw part which is fastened on the outside of the bolt screw part and moves linearly and connected between the parking cable and the bolt screw part and the nut screw part. It characterized in that it comprises a damper to reduce the impact caused by the bolt screw.

Figure P1020110069055

Description

Electronic Parking Brake Device {ELECTRIC PARKING BRAKE IN VEHICLE}

The present invention relates to an electronic parking brake device, and more particularly to an electronic parking brake device that can reduce the impact caused by the operation of the nut screw, thereby improving the durability of the parts.

In general, the parking brake is operated by the driver pulling the parking lever to restrain the movement of the vehicle.

Recently, an electronic parking brake device that uses a simple switch operation to operate the parking brake is used.

When the electronic parking brake device presses the switch to drive the motor, the bolt screw and the nut screw move in accordance with the rotation of the motor to pull the parking cable, thereby generating an equal braking force on each rear wheel.

Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 2009-0039056 (published on Apr. 22, 2009, title of the invention: electronic parking brake system for a vehicle).

When the bolt screw is rotated in the state in which the parking cable is disconnected, the nut screw is moved to the bolt screw at a set speed or more, and the durability of the gear including the driving member is reduced. Therefore, there is a need to improve this.

The present invention has been made by the necessity as described above, an object of the present invention is to provide an electronic parking brake device that can improve the durability of the parts by reducing the impact caused by the nut screw is in contact with the bolt screw.

The electronic parking brake apparatus according to the present invention includes: a bolt screw part that is rotated by receiving power from a driving member, and a nut screw part and a bolt screw part and a nut screw part connected to a parking cable by being fastened by being fastened to the outside of the bolt screw part. It is provided between the damper portion to reduce the impact caused by the bolt screw portion.

The bolt screw unit preferably includes a sliding member having a polygonal cross section and a screw member extending from the sliding member to be inserted into the nut screw portion and having a thread formed on the outside thereof.

In addition, the nut screw portion preferably includes a nut body having an inner space in which the screw member is moved, and an inner thread portion in which a screw thread engaged with the screw member is provided inside the nut body.

In addition, the damper portion is preferably provided in a shape that is elastic and protrudes inside the nut body.

In addition, the damper portion preferably includes an insertion body protruding into the nut body, an outer body installed to be caught on the outside of the nut body, and a connection member connecting the insertion body and the outer body.

In the electronic parking brake apparatus according to the present invention, since the damper portion is installed inside the nut screw portion, the nut screw portion is moved in the direction in contact with the bolt screw portion to reduce the impact generated, thereby improving durability of each component including the driving member. Can be.

1 is a partial cutaway perspective view schematically showing an electronic parking brake apparatus according to an embodiment of the present invention.
2 is a perspective view schematically showing a state in which a bolt screw unit and a damper unit are spaced apart according to an embodiment of the present invention.
3 is a perspective view schematically showing a state where the bolt screw portion and the damper portion are in contact with each other according to an embodiment of the present invention.
4 is an exploded perspective view illustrating a damper unit and a nut screw unit according to an embodiment of the present invention.
5 is a perspective view illustrating a state in which a damper unit is coupled to a nut screw unit according to an embodiment of the present invention.

Hereinafter, an embodiment of an electronic parking brake apparatus according to the present invention will be described with reference to the accompanying drawings. For convenience of description, an electronic parking brake device used in a vehicle will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a partial cutaway perspective view schematically showing an electronic parking brake apparatus according to an embodiment of the present invention, Figure 2 schematically shows a state in which the bolt screw and the damper portion spaced apart according to an embodiment of the present invention 3 is a perspective view schematically illustrating a state where a bolt screw unit and a damper unit are in contact with each other according to an embodiment of the present invention, and FIG. 4 is an exploded view illustrating the damper unit and the nut screw unit according to an embodiment of the present invention. 5 is a perspective view illustrating a state in which a damper unit is coupled to a nut screw unit according to an embodiment of the present invention.

As shown in Figure 1 and 2, the electronic parking brake device 1 according to an embodiment of the present invention, a bolt screw 20 and a bolt screw rotated by the power of the drive member 10, It is installed between the nut screw part 40 and the bolt screw part 20 and the nut screw part 40 which are fastened to the outside of the part 20 and connected to the parking cable 30, and the bolt screw part 20 It includes a damper unit 50 to reduce the impact caused by.

The driving member 10 for supplying power is installed in the mounting bracket 12, and the mounting bracket 12 is engaged with the driving gear 14 and the driving gear 14 which are axially connected to the driving member 10. The driven gear 18 which meshes with the connecting gear 16 and the connecting gear 16 and is rotated is installed.

A tooth is formed on an outer side of the driven gear 18, and a polygonal groove 19 to which the sliding member 22 of the bolt screw unit 20 is moved is formed inside the driven gear 18.

Since the shape of the polygonal groove 19 is formed in a shape corresponding to the polygonal shape outside the sliding member 22, the sliding member 22 is also rotated by the rotation of the driven gear 18.

Bolt screw portion 20 according to an embodiment, the sliding member 22 and the sliding member 22 having a polygonal cross-section is inserted into the nut screw portion 40 and the screw thread formed on the outside And a member 24.

The sliding member 22 is rotated in engagement with the polygonal groove 19 of the driven gear 18, it can be slide-moved through the polygonal groove (19).

The screw member 24 extends to one side of the sliding member 22 (the right reference in FIG. 1), and a screw thread is formed on the outer side of the screw member 24.

The nut screw portion 40 fastened to the outside of the bolt screw portion 20 may be formed in various shapes within the technical concept of linear movement according to the rotation of the bolt screw portion 20.

The nut screw portion 40 according to the embodiment has a nut body 42 having an inner space 44 through which the screw member 24 is moved, and a threaded nut body 42 engaged with the screw member 24. It includes an inner screw portion 46 provided on the inner side.

An inner screw portion 46 is formed on one side (left side of FIG. 2) of the nut body 42, and a damper portion 50 is provided on the other side (right side of FIG. 2) of the nut body 42.

2 to 5, the other side of the nut body 42, a mounting hole 48 for installing the damper unit 50 is formed, and the damper unit 50 through the mounting hole 48. Since the bolt screw portion 20 is in contact with the other side of the nut screw portion 40 to reduce the impact generated.

The damper part 50 is provided between the bolt screw part 20 and the nut screw part 40 to reduce the impact by the bolt screw part 20.

In addition, the damper part 50 is elastic and is formed in various shapes within the technical concept installed in the shape protruding inside the nut body 42.

The damper part 50 according to an embodiment includes an insertion body 52 protruding inside the nut body 42, an outer body 54 and an insertion body 52 that are installed by being caught outside the nut body 42. ) And a connecting member 56 connecting the outer body 54.

The damper part 50 serves to cushion the screw member 24 which is moved along the inner space 44 so as not to directly contact the other side of the nut body 42, and the nut screw which is in contact with the screw member 24. Slowly slows the movement of the part 40 to reduce the impact transmitted to other parts.

As shown in FIG. 1, since the parking cable 30 is connected to the nut screw portion 40 and the bolt screw portion 20, respectively, by the movement of the nut screw portion 40 and the bolt screw portion 20. The tension transmitted to the parking cable 30 is also variable.

The parking cable 30 includes a first cable 32 connected to the nut screw part 40 and a second cable 34 connected to the bolt screw part 20.

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

1 and 2, in a state where the bolt screw 20 and the damper 50 are spaced apart from each other, the driving member 10 is operated to rotate the driving gear 14.

The connecting gear 16 engaged with the drive gear 14 and the driven gear 18 engaged with the connecting gear 16 are successively rotated, and the sliding member inserted into the polygonal groove 19 of the driven gear 18 ( 22) is also rotated.

By rotation of the sliding member 22, the screw member 24 which is integrally rotated with the sliding member 22 is also rotated.

The nut screw portion 40 whose rotation is constrained is moved by the rotation of the screw member 24, and as shown in FIG. 3, the nut screw portion (N) until the screw member 24 contacts the damper portion 50. 40) may be moved.

If the driving cable 10 is operated in a state in which the parking cable 30 is disconnected or not connected, the moving speed of the nut screw 40 may be higher than or equal to the set speed.

When the screw member 24 is in contact with the damper portion 50, the movement speed of the nut screw portion 40 is reduced by the elasticity of the damper portion 50, and the impact caused by the movement of the nut screw portion 40 is also reduced. Is reduced.

According to the configuration as described above, in the electronic parking brake apparatus 1 according to the embodiment, since the damper portion 50 is installed inside the nut screw portion 40, the nut screw portion 40 is a bolt screw portion. By reducing the impact generated by moving in the direction in contact with the (20), it is possible to improve the durability of each component including the drive member (10).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

In addition, the electronic parking brake device used in an automobile has been described as an example, but this is merely exemplary, and the electronic parking brake device according to the present invention may be used in brakes provided in other devices.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

1: electronic parking brake
10: drive member 12: mounting bracket
14: Drive Gear 16: Connecting Gear
18: driven gear 19: polygonal groove
20: bolt screw 22: sliding member
24: screw member 30: parking cable
32: first cable 34: second cable
40: nut screw 42: nut body
44: inner space 46: inner screw portion
48: mounting hole 50: damper
52: insertion body 54: outer body
56: connecting member

Claims (5)

A bolt screw part that is rotated by the power of the driving member;
A nut screw part which is fastened to the outside of the bolt screw part and linearly moved, and to which a parking cable is connected; And
And a damper portion disposed between the bolt screw portion and the nut screw portion to reduce an impact caused by the bolt screw portion.
The method of claim 1,
The bolt screw unit, the sliding member having a polygonal cross section; And
An electronic parking brake apparatus, comprising: a screw member extending from the sliding member and inserted into the nut screw portion and having a screw thread formed on the outside thereof.
The method of claim 2,
The nut screw unit, the nut body having an inner space in which the screw member is moved; And
Electronic parking brake device, characterized in that the screw thread engaged with the screw member includes an inner screw portion provided on the inner side of the nut body.
The method of claim 3, wherein
The damper part has an elastic and the electronic parking brake device characterized in that it is installed in a shape protruding inside the nut body.
The method of claim 3, wherein
The damper portion, the insertion body protruding into the nut body;
An outer body which is installed by being caught outside of the nut body; And
Electronic parking brake device characterized in that it comprises a connecting member for connecting the insertion body and the outer body.
KR1020110069055A 2011-07-12 2011-07-12 Electric parking brake in vehicle KR20130008352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110069055A KR20130008352A (en) 2011-07-12 2011-07-12 Electric parking brake in vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110069055A KR20130008352A (en) 2011-07-12 2011-07-12 Electric parking brake in vehicle

Publications (1)

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KR20130008352A true KR20130008352A (en) 2013-01-22

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KR1020110069055A KR20130008352A (en) 2011-07-12 2011-07-12 Electric parking brake in vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253710A (en) * 2020-12-07 2021-01-22 烟台智汇港科技创新有限公司 Synchronous speed control mechanical device based on coaxial and reverse rotation directions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253710A (en) * 2020-12-07 2021-01-22 烟台智汇港科技创新有限公司 Synchronous speed control mechanical device based on coaxial and reverse rotation directions

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