KR20100097290A - Electric parking brake for vehicle - Google Patents

Electric parking brake for vehicle Download PDF

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Publication number
KR20100097290A
KR20100097290A KR1020090016163A KR20090016163A KR20100097290A KR 20100097290 A KR20100097290 A KR 20100097290A KR 1020090016163 A KR1020090016163 A KR 1020090016163A KR 20090016163 A KR20090016163 A KR 20090016163A KR 20100097290 A KR20100097290 A KR 20100097290A
Authority
KR
South Korea
Prior art keywords
manual release
parking brake
drive motor
release member
electric parking
Prior art date
Application number
KR1020090016163A
Other languages
Korean (ko)
Inventor
김진라
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 KR1020090016163A priority Critical patent/KR20100097290A/en
Publication of KR20100097290A publication Critical patent/KR20100097290A/en

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Classifications

    • 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
    • B60T13/746—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 and mechanical transmission of the braking action
    • 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
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/03—Brake assistants
    • 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
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/10—Automatic or semi-automatic parking aid systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The present invention provides a drive motor for generating a rotational force, a spindle for moving forward and backward by receiving the rotational force of the drive motor, a deceleration device for transmitting the rotational force of the drive motor to the spindle, and a manual release device capable of manually rotating the deceleration device The present invention relates to an electric parking brake including a manual release device. The manual release device includes a manual release member installed to be movable and selectively coupled to the reduction device to transmit external force to the reduction device. By having the release member coupled to the deceleration device, there is an effect of being able to release the brake manually.

Description

Electric parking brake {ELECTRIC PARKING BRAKE FOR VEHICLE}

The present invention relates to an electric parking brake, and more particularly, to an electric parking brake having a manual release device for manually releasing braking.

In general, the parking brake is a brake for maintaining a stopped state of the vehicle. In recent years, such a parking brake apparatus includes an electric parking brake for maintaining the stopped state of the vehicle by the rotational force generated by the driving motor.

The electric parking brake includes a drive motor that generates rotational force, a reduction gear that is connected to the drive motor so that a relatively large torque can be generated compared to the torque generated from the drive motor, and a spindle that moves forward and backward by receiving the rotational force from the reduction gear. Including the configuration, the spindle is connected to each other through the brake and the parking cable installed on the wheel, so that the brake and the brake release of the brake installed on the wheel is made according to the movement of the spindle.

However, in the case of the conventional electric parking brake, when the driving motor does not operate due to battery discharge or other failure, the parking brake cannot be released and there is a problem in that the vehicle cannot be moved for repair.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention is to provide an electric parking brake that can release the brake manually when the drive motor is not operating.

Electric parking brake according to the present invention for achieving the above object is a drive motor for generating a rotational force, a spindle for moving forward and backward receiving the rotational force of the drive motor, and a reduction device for transmitting the rotational force of the drive motor to the spindle And, a manual releasing device for manually rotating the deceleration device, wherein the manual releasing device is installed to be movable and selectively coupled to the deceleration device according to its position so that an external force is transmitted to the deceleration device. It characterized in that it comprises a manual release member to enable.

The manual release device may include a manual release device body having a guide hole through which the manual release member is movable, an elastic member having one end supported by the manual release member and the other end supported by the manual release device body; And a stopper ring installed in the guide hole to maintain the manual release member installed in the guide hole.

In addition, the manual release member is characterized in that it comprises a head portion to which the external force is transmitted, and the manual release member is coupled to the deceleration device.

In addition, the head portion is characterized in that the tool insertion groove corresponding to the shape of the tool is provided so that the tool for applying the external force is concave.

In addition, the manual release device is characterized in that it further comprises a sealing member for sealing between the head and the guide hole.

In addition, the coupling portion is formed to have a polygonal cross-section, the reduction device is characterized in that it comprises a drive gear connected to the axis of the drive motor is provided with a coupling groove of the cross-sectional shape corresponding to the coupling portion.

As described above, the electric parking brake according to the present invention is provided with a manual release member that is selectively coupled to the speed reduction device. Therefore, when the driving motor is not operated, the manual release member may be coupled to the speed reduction device to manually release the brake. It is effective to be.

Hereinafter, an electric parking brake according to an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the electric parking brake according to the present invention rotates in a forward direction and a reverse direction and generates a power, and is connected to the drive motor 10 and is relatively larger than the torque generated from the drive motor. Reduction device 20 to allow torque to be generated, the spindle 30 moving forward and backward by the rotational force transmitted through the reduction device 20, one end is connected to the spindle 30 and the other end to the wheel of the vehicle It includes a configuration such as a parking cable (not shown) connected to the installed brake (not shown).

The reduction gear 20 is connected to the shaft of the drive motor 10 and receives the rotational force from the drive motor 10 to rotate the drive gear 21 and the drive gear 21 through the intermediate gear 22 to rotate the rotational force It includes a driven gear 23 for receiving the spindle 30 to move forward and backward, the spindle is to be installed through the center of the driven gear 23, the outer peripheral surface of the spindle 30 is processed with a male screw and driven gear The inner circumferential surface of 23 is machined with the external thread of the spindle 30 and the external thread. Therefore, the spindle 30 moves forward and backward according to the rotational direction of the driven gear 23, and the power generated from the driving motor is transmitted to the parking cable to brake or release the external force applied to the parking cable.

In addition, the electric parking brake according to the present invention includes a manual release device 40 to enable the manual release of the electric parking brake. Therefore, when the driving motor 10 does not operate due to battery discharge or other failure, the user can manually release the electric parking brake by applying an external force to the electric parking brake through the manual release device 40.

Manual release device (40) is installed and moveable to move and is selectively coupled to the above-described reduction device 20 according to its position to allow the external force to be transmitted to the reduction device (20) and The manual release device 41 includes a manual release device body 42 provided with a guide hole 42a to which the manual release member 41 is movable.

As shown in FIG. 2, the manual release member 41 is coupled to the head portion 41a having a concave tool insertion hole 41b having a shape corresponding to the tool so that the tool is inserted therein, and the reduction device 20. It includes a coupling portion (41c) to allow the external force transmitted through the tool to be transmitted to the reduction device (20). In the present embodiment, the coupling portion 41c is coupled to the driving gear 21 so as to transmit external force applied by the user to the driving gear 21, and the coupling portion 41c is configured to transmit the external force. It is formed to have a polygonal cross section, and the driving gear 21 is provided with a concave coupling groove 21a (see FIG. 1) having a shape corresponding to the coupling portion 41c.

The manual release device 40 is elastically supported by the elastic member 43 so that the manual release member 41 can be selectively coupled with the drive gear 21 only when an external force is transmitted. 40, one end is supported by the head 41a of the manual release member 41 and the other end is supported by the manual release device body 42 so that the manual release member 41 is elastically supported by the manual release device body 42. And a stopper ring 44 formed in the C-shape and installed in the guide hole 42a to maintain the state in which the manual release member 41 is installed in the guide hole 42a. do. In addition, the head 41a of the manual release member 41 is formed of an elastically deformable material and is formed of an O-ring to guide the head 41a of the manual release member 41 and the guide hole of the manual release device body 42. A sealing member 45 for sealing between 42a) is disposed.

Therefore, the manual release member 41 remains spaced apart from the drive gear 21 by the elastic force of the elastic member 43 until the external force applied from the user through the tool is transmitted, and then the external force from the user through the tool. When the elastic member 43 is applied, the elastic member 43 elastically deforms, and the manual release member 41 moves along the guide hole 42a, and the engaging portion 41c of the manual release member 41 is a coupling groove of the drive gear 21 ( When the manual release member 41 is rotated by the tool again in this state and is coupled to 21a), the driving gear 21 rotates together with the manual release member 41, thereby enabling braking to be released.

It is apparent to those skilled in the art that the present invention is not limited to the embodiments described above, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1 is a schematic view showing a driving unit of an electric parking brake according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing a manual release member applied to the electric parking brake according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: drive motor 20: reduction gear

21: drive gear 21a: coupling groove

30: spindle 40: manual release device

41: manual release member 42: manual release device body

43: elastic member 44: stopper ring

45: sealing member

Claims (6)

A drive motor for generating rotational force, A spindle moving forward and backward by receiving the rotational force of the drive motor; A reduction device for transmitting the rotational force of the drive motor to the spindle; It includes a manual release device for manually rotating the reduction device, The manual release device is an electric parking brake, characterized in that it comprises a manual release member which is installed to be movable and selectively coupled to the deceleration device according to its position so that external force can be transmitted to the deceleration device. The method of claim 1, The manual release device includes a manual release device body provided with a guide hole through which the manual release member is movable, an elastic member having one end supported by the manual release member and the other end supported by the manual release device body, and the guide. And a stopper ring installed in the hole to maintain the manual release member installed in the guide hole. The method of claim 2, The manual release member is an electric parking brake, characterized in that the external force is transmitted to the head portion, and the manual release member includes a coupling portion coupled to the deceleration device. The method of claim 3, wherein The head parking brake is characterized in that the tool insertion groove corresponding to the shape of the tool is provided in the concave so that a tool for applying an external force is inserted. The method of claim 3, wherein The manual release device further comprises a sealing member for sealing between the head and the guide hole. The method of claim 3, wherein The coupling portion is formed to have a polygonal cross section, The speed reduction device is an electric parking brake, characterized in that it comprises a drive gear connected to the shaft of the drive motor is provided with a coupling groove of the cross-sectional shape corresponding to the coupling portion.
KR1020090016163A 2009-02-26 2009-02-26 Electric parking brake for vehicle KR20100097290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090016163A KR20100097290A (en) 2009-02-26 2009-02-26 Electric parking brake for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090016163A KR20100097290A (en) 2009-02-26 2009-02-26 Electric parking brake for vehicle

Publications (1)

Publication Number Publication Date
KR20100097290A true KR20100097290A (en) 2010-09-03

Family

ID=43004529

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090016163A KR20100097290A (en) 2009-02-26 2009-02-26 Electric parking brake for vehicle

Country Status (1)

Country Link
KR (1) KR20100097290A (en)

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E902 Notification of reason for refusal
E601 Decision to refuse application