KR20110060254A - Parking brake - Google Patents

Parking brake Download PDF

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Publication number
KR20110060254A
KR20110060254A KR1020090116788A KR20090116788A KR20110060254A KR 20110060254 A KR20110060254 A KR 20110060254A KR 1020090116788 A KR1020090116788 A KR 1020090116788A KR 20090116788 A KR20090116788 A KR 20090116788A KR 20110060254 A KR20110060254 A KR 20110060254A
Authority
KR
South Korea
Prior art keywords
lamp plate
caliper housing
parking brake
piston
seal
Prior art date
Application number
KR1020090116788A
Other languages
Korean (ko)
Inventor
최수영
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 KR1020090116788A priority Critical patent/KR20110060254A/en
Publication of KR20110060254A publication Critical patent/KR20110060254A/en

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Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/36—Helical cams, Ball-rotating ramps
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/60—Cables or chains, e.g. Bowden cables
    • F16D2125/62—Fixing arrangements therefor, e.g. cable end attachments
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/64—Levers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

PURPOSE: A parking brake which can prevent the rusting of a shaft part of a rotary lamp plate according to the moisture and foreign material inflow is provided to prevent the declining of airtight performance of a seal member by forming a groove part on a lever member which is combined with the seal member. CONSTITUTION: A parking brake comprises a disc(10), inner and outer disc pads(12,14), a caliper housing(20), a piston, and an actuator(40). The disc revolves along with the wheel of the vehicle. The inner and outer disc pads are located on a carrier which is combined in a car body to be compressed toward the inner and outer side of the disc. The caliper housing operates the inner disc pad and is installed in the carrier. The piston is installed inside the caliper housing to move back and forth. The actuator is installed in the caliper housing in order to operate the piston. A lever member comprises a groove part in which the end part of a seal member is inserted.

Description

Parking Brake

The present invention relates to a parking brake, and more particularly to a parking brake of a ball-in-lamp brake caliper type vehicle.

Generally, a brake mounted on a vehicle includes a drum brake and a disk brake as devices for slowing or stopping a vehicle while driving. In addition, a parking brake for keeping a vehicle stationary when the vehicle is parked includes a drum type which is usually provided integrally with the drum brake, and a disk type which is integrally provided with the disk brake. These parking brakes are connected to a parking cable for operating them, and the parking cables are connected to a cable control device operated by a parking lever or an electric drive which is directly operated by a driver, thereby operating manually or automatically.

Among them, the disk type parking brake obtains a braking force by compressing the disk pads on both sides of the disk that rotates together with the wheels of the vehicle to generate friction.

Typical disc type parking brakes include discs that rotate together with a wheel of a vehicle, inner and outer disc pads installed on the inside and outside of the disc, and caliper housings and caliper housings for operating these inner and outer disc pads. A piston, a carrier for movably supporting the caliper housing, and an actuator for operating the piston.

The caliper housing is slidably mounted to a carrier fixed to a knuckle (not shown) of the vehicle body so as to be located at one outer peripheral side of the disk. The caliper housing is provided with a cylinder in which the piston is retractably received. The piston advances in the cylinder and presses the inner disk pad against the disk.

The actuator is connected to the parking cable and, when the parking cable is activated, presses the piston towards the disc.

Such actuators include a cam that rotates by the operation of the parking cable and a so-called cam-strut method using a strut installed between the cam and the piston, and a fixed lamp plate fixedly installed inside the caliper housing. And a ball lamp including a rotating lamp plate rotating by the operation of the parking cable connected to the lever member, a ball installed between the fixed lamp plate and the rotating lamp plate, and a push rod pushing the piston adjacent to the rotating lamp plate. There is a ball in ramp method.

On the other hand, a shaft member projecting to the rear of the caliper housing from the rotating lamp plate is provided with a seal member for sealing the seal member, and the sealing member and the lever member are joined to a portion where the seal member is sealed according to the rotation of the lever member. This lowers the moisture and foreign matter penetration. Therefore, there is a problem that the rust occurs in the shaft portion of the rotary lamp plate in accordance with the penetration of moisture and foreign matter, the operating performance of the lever member may be reduced.

One aspect of the present invention relates to a parking brake that forms a groove in a lever member that is joined to a seal member to prevent the airtight performance of the seal member from being lowered regardless of the rotational operation of the lever member.

A disk rotating together with a wheel of a vehicle according to an embodiment of the present invention, inner and outer disk pads removably installed in a carrier coupled to a vehicle body so as to be compressed onto inner / outer surfaces of the disk, and inner disk pads. A caliper housing with a retractable piston for actuation and slidably mounted in a carrier for actuating the outer disc pad, an actuator installed in the caliper housing for actuating the piston, and a lever connecting the actuator to the parking cable A vehicle parking brake comprising a member and a seal member in contact with the lever member to seal any part of the actuator, wherein the lever member includes a groove portion in which an end of the seal member is fitted and in close contact with the lever member.

In addition, the actuator is fixed to the chamber provided in the interior of the caliper housing and provided with a fixed lamp plate having a plurality of lamps, and a plurality of lamps corresponding to the lamps of the fixed lamp plate and rotated by the parking cable through the shaft portion A lamp plate, a plurality of balls interposed between the lamps to advance the rotating lamp plate when the rotating lamp plate is rotated, and a push rod that is pushed to push the piston when the rotating lamp plate is advanced. .

In addition, the groove portion is characterized in that it is provided in a circular recessed shape so that a predetermined distance from the shaft portion with respect to the axis portion.

In addition, the seal member includes an attachment portion provided on the inner circumferential side of the rear hole of the caliper housing, a seal portion extending in the axial direction from the attachment portion and mounted on an outer circumference of the shaft portion formed on the rotating lamp plate, and extending from the seal portion, It characterized in that it comprises a close contact is fitted to the groove.

Moreover, the seal member is characterized by including a cylindrical rubber seal.

Therefore, the parking brake according to the embodiment of the present invention can solve the problem that the airtight performance of the seal member is deteriorated by providing a groove in the lever member which is joined to the seal member.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a side view schematically showing the configuration of a parking brake according to an embodiment of the present invention, Figure 2 is an enlarged view of a part of the parking brake shown in Figure 1, Figure 3 is a lever member shown in Figure 1 Is an enlarged perspective view.

As shown in Figures 1 to 3, the parking brake 1 according to an embodiment of the present invention is to be pressed on the inner and outer surfaces of the disk 10 and the disk 10 that rotates with the wheel of the vehicle. Inner and outer disk pads 12 and 14 movably installed in a carrier (not shown) coupled to the vehicle body, and a caliper housing 20 installed in the carrier so as to be slidable to operate the inner disk pad 12. And a piston 30 removably installed in the caliper housing 20 and an actuator 40 installed in the caliper housing 20 to operate the piston 30.

The caliper housing 20 is slidably mounted to the carrier through a pair of guide rods (not shown). The inside of the caliper housing 20 is provided with a cylinder 21 in which the piston 30 is accommodated, and a chamber 22 in which the actuator 40 is installed.

The cylinder 21 is formed in front of the caliper housing 20 to open toward the inner disk pad 12. The chamber 22 is formed at the rear of the caliper housing 20 adjacent to the cylinder 21.

Upper and lower portions of the chamber 22 are provided in the pair of guide grooves 23, respectively. These guide grooves 23 are formed to face each other on the upper and lower portions of the inner circumferential surface of the caliper housing 20 side by side in the longitudinal direction of the chamber 22, that is, the direction of movement of the push rod 70 to be described later. The longitudinal section of each guide groove 23 has a semicircular shape.

And, although not shown, one side of the caliper housing 20 is provided with a hydraulic duct connecting the master cylinder and the cylinder 21 to enable the hydraulic pressure generated in the master cylinder to pressurize the piston (30).

The actuator 40 is installed in the chamber 22 of the caliper housing 20 so as to be connected to the parking cable, and presses the piston 30 toward the inner disk pad 12 in association with the parking cable.

The actuator 40 includes a fixed lamp plate 50 fixed to the chamber 22, a rotating lamp plate 60 to which a lever member 63 connected to the parking cable is coupled, and a fixed lamp plate 50. The plurality of balls 61 interposed between the rotary lamp plate 60, the push rod 70 pushed by the rotary lamp plate 60 to pressurize the piston 30, and the push rod 70 Returning to position comprises a return spring 90.

The fixed lamp plate 50 is fixedly installed at the rear of the chamber 22. A through hole 50a is provided at the center of the fixed lamp plate 50, and three first lamps 50b are provided at regular intervals around the through hole 50a. Each of the first lamps 50b has a shape in which the width and depth of the first lamps 50b decrease from the central portion to the both ends.

The rotating lamp plate 60 is movably installed inside the chamber 22 so as to face the fixed lamp plate 50. A shaft portion 60a is formed in the central portion of the rotating lamp plate 60, and the shaft portion 60a has a through hole 50a of the fixed lamp plate 50 and an open rear hole 20a of the caliper housing 20. It protrudes to the rear of the caliper housing 20 through.

One side of the rotating lamp plate 60 is provided with three second lamps 60b corresponding to each of the first lamps 50b of the fixed lamp plate 50. Like the first lamp 50b, these second lamps 60b also have a shape in which the width and depth of the second lamps 60b decrease from the center portion to the both ends thereof. The three balls 61 are interposed between the fixed lamp plate 50 and the rotating lamp plate 60 so as to be inserted into the first lamp 50b and the corresponding second lamp 60b.

The push rod 70 has a hollow hollow center and a female thread is provided on an inner circumferential surface thereof. An end portion adjacent to the rotary lamp plate 60 of the push rod 70 is provided with a flange portion 71 extending toward the inner circumferential surface of the caliper housing 20.

A thrust bearing 62 is interposed between the flange portion 71 and the rotation lamp plate 60, and the adjuster 80 is screwed into the push rod 70.

A male thread corresponding to the female thread of the push rod 70 is provided on the outer circumferential surface of the adjuster 80 inserted into the push rod 70, and one end of the adjuster 80 has an internal portion of the piston 30. The pressing portion 81 in contact with the surface is provided. A washer 82 is provided at the rear of the pressing unit 81, and an adjustment spring 84 is interposed between the washer 82 and the fixing ring 83 coupled to one side of the outer circumferential surface of the push rod 70.

The return spring 90 is installed between the flange portion 71 and the cage 92 fixed by the snap ring 91 on one side of the chamber 22 of the caliper housing 20. The return spring 90 returns the push rod 70 advanced by the rotary lamp plate 60 to its original position when the external force applied to the lever member 63 is released.

A lever member 63 is coupled to the shaft portion 60a protruding out of the caliper housing 20 to be connected to a parking cable, not shown. The lever member 63 is engaged with the shaft portion 60a in the radial direction of the shaft portion 60a of the rotary lamp plate 60. Therefore, the lever member 63 is connected to the parking cable (not shown) at its tip to rotate.

A seal member 64 is provided to seal the shaft portion 60a of the rotating lamp plate 60 protruding from the rear hole 20a of the caliper housing 20.

The seal member 64 may be configured to include elastic deformation such as a cylindrical rubber seal.

The rubber seal 64 is attached to the inner peripheral side of the rear hole 20a of the caliper housing 20 and the shaft portion 60a of the rotating lamp plate 60 extending in the axial direction from the attachment portion 64a. A seal portion 64b mounted on an outer circumference and a close portion 64c extending from the seal portion 64b and fitted into the groove portion 63a of the lever member 63 may be in close contact with each other.

That is, the seal member 64 comes into contact with the lever member 63. The lever member 63 is provided with a groove portion 63a corresponding to the seal member 64, so that the seal member 64c is in close contact with the seal member 64c. ) Is fitted into the groove portion 63a, so that the airtight performance of the seal member 64 can be maintained regardless of the rotational operation of the lever member 63.

Here, the groove portion 63a of the lever member 63 may have a circular shape so as to correspond to the shape of the contact portion 64c of the seal member 64.

On the other hand, the close contact portion 64c of the seal member 64 is in close contact with the lever member 63 not only in the groove portion 63a of the lever member 63 but also in a region other than the groove portion 63a of the lever member 63. The airtight performance of the member 64 can be improved.

Hereinafter, with reference to the accompanying drawings will be described the operation of the vehicle parking brake according to a preferred embodiment of the present invention.

When the driver pulls the parking cable, the lever member 63 connected to the parking cable rotates and the rotation lamp plate 60 rotates at the same time. At this time, the positions of the second lamps 60b are changed so that the balls 61 interposed between the fixed lamp plate 50 and the rotating lamp plate 60 are positioned at the ends of the second lamps 60b. 60 moves toward the piston 30.

Then, the pressing force by the movement of the rotary lamp plate 60 is transmitted to the flange portion 71 of the push rod 70 through the thrust bearing 62, the push rod 70 is pushed forward. When the push rod 70 moves, the adjuster 80 coupled thereto moves forward and pushes the piston 30 toward the disk 10.

When the piston 30 is advanced, the inner disk pad 12 is pushed to be in close contact with the inner surface of the disk 10, and when the inner disk pad 12 is tight at the disk 10, reaction force due to the pressurization of the piston 30 is applied. As it occurs, the caliper housing 20 is pushed in the opposite direction. At this time, the front end portion 24 of the caliper housing 20 pulls the outer disk pad 14 toward the disk 10, and the braking force is generated while the outer disk pad 14 is in close contact with the outer surface of the disk 10.

In addition, when the external force applied to the parking cable is released, the lever member 63 is returned to its original state, and the rotary lamp plate 60 is returned to its original position, and the push rod 70 is also applied to the elastic force of the return spring 90. To the original position. At the same time, the piston 30 retracts backwards and the inner and outer disk pads 12 and 14 fall off the disk 10 to remove the braking force.

On the other hand, the seal member 64 bonded to the lever member 63 is fitted into the groove portion 63a of the lever member 63 so that the sealing member 64 can be prevented from decreasing the airtight performance even if the lever member 63 is repeatedly rotated. Can be. Furthermore, as the airtight performance is prevented from being lowered, the operating performance of the lever member 63 can be prevented from being lowered.

As described above, the parking brake according to the embodiment of the present invention to prevent the degradation of the airtight performance of the seal member in accordance with the rotation operation of the lever member by forming a groove in the portion of the lever member to be bonded to the seal member. It can be seen that. Therefore, many modifications may be made by those skilled in the art without departing from the scope and spirit of the present invention.

1 is a side view schematically showing the configuration of a parking brake according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a part of the parking brake shown in FIG. 1.

3 is an enlarged perspective view illustrating the lever member shown in FIG. 1.

 Description of the Related Art [0002]

1 ... parking brake 10 ... disc

20 ... caliper housing 30 ... piston

40 ... actuator 50 ... fixed lamp plate

60 ... rotating lamp plate 63 ... lever member

64.No thread

Claims (5)

A disk that rotates with the wheel of the vehicle, an inner and outer disk pads removably installed on a carrier coupled to the vehicle body to be pressed against the inner / outer surface of the disk, and a piston for operating the inner disk pad. A caliper housing removably mounted and slidably mounted to the carrier to operate the outer disk pad, an actuator installed on the caliper housing to operate the piston, and a lever connecting the actuator to the parking cable A vehicle parking brake comprising a member and a seal member in contact with the lever member to seal a part of the actuator, The lever member is a parking brake, characterized in that it comprises a groove portion in which the end of the seal member is fitted. The method of claim 1, The actuator is fixedly installed in a chamber provided inside the caliper housing and has a fixed lamp plate having a plurality of lamps, and a plurality of lamps corresponding to the lamps of the fixed lamp plate, and is rotated by a parking cable through the shaft. A rotation lamp plate, a plurality of balls interposed between the lamps to advance the rotation lamp plate when the rotation lamp plate is rotated, and a push rod that is pushed to push the piston when the rotation lamp plate is advanced. Parking brake, characterized in that it comprises. The method of claim 2, The groove is a parking brake, characterized in that provided in a circular recessed shape so that a predetermined distance from the shaft portion in the center of the shaft portion. The method of claim 1, The seal member includes an attachment portion installed at an inner circumferential side of the rear hole of the caliper housing, a seal portion extending in the axial direction from the attachment portion and mounted on an outer circumference of the shaft portion formed on the rotating lamp plate, and extending from the seal portion. Parking brake characterized in that it comprises a close contact is fitted to the groove of the lever member. The method of claim 1, And said seal member comprises a tubular rubber seal.
KR1020090116788A 2009-11-30 2009-11-30 Parking brake KR20110060254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090116788A KR20110060254A (en) 2009-11-30 2009-11-30 Parking brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090116788A KR20110060254A (en) 2009-11-30 2009-11-30 Parking brake

Publications (1)

Publication Number Publication Date
KR20110060254A true KR20110060254A (en) 2011-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090116788A KR20110060254A (en) 2009-11-30 2009-11-30 Parking brake

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KR (1) KR20110060254A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994165A (en) * 2014-03-08 2014-08-20 芜湖伯特利汽车安全系统有限公司 Calipers with parking function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994165A (en) * 2014-03-08 2014-08-20 芜湖伯特利汽车安全系统有限公司 Calipers with parking function

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