KR20100044331A - Parking brake device of disk brake - Google Patents

Parking brake device of disk brake Download PDF

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Publication number
KR20100044331A
KR20100044331A KR1020080103422A KR20080103422A KR20100044331A KR 20100044331 A KR20100044331 A KR 20100044331A KR 1020080103422 A KR1020080103422 A KR 1020080103422A KR 20080103422 A KR20080103422 A KR 20080103422A KR 20100044331 A KR20100044331 A KR 20100044331A
Authority
KR
South Korea
Prior art keywords
brake
bent
piston
cylinder
cam
Prior art date
Application number
KR1020080103422A
Other languages
Korean (ko)
Inventor
김윤현
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 KR1020080103422A priority Critical patent/KR20100044331A/en
Publication of KR20100044331A publication Critical patent/KR20100044331A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18Actuating 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/14Mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/20Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/36Helical cams, Ball-rotating ramps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/58Mechanical mechanisms transmitting linear movement
    • F16D2125/60Cables or chains, e.g. Bowden cables
    • F16D2125/62Fixing arrangements therefor, e.g. cable end attachments

Abstract

Parking brake apparatus of the disc brake according to the present invention is a caliper housing consisting of a finger portion and a main body portion to contact the pad plate provided on both sides of the disk to the disc, a cylinder provided in the main body portion of the caliper housing, and the cylinder is slidable A piston for moving the pad plate to the disc by hydraulic or mechanically generated thrust, an actuating lever connected to the parking cable and rotatably installed, and converting the rotational movement of the actuating lever into a linear movement of the piston. In the parking brake apparatus of the disc brake having a cam means comprising an operating shaft and a lamp and a ball provided to the rear of the cylinder, and a push rod for transmitting the linear movement of the cam means to the piston, the operating lever is the cam Coupled to the means Is characterized in that it comprises a first planar portion, a bent portion bent extending from the first plane portion to one side, and a second planar portion bent in a form overlapping with the first plane portion in the bent portion.

Description

Parking brake device of disk brake
The present invention relates to a parking brake apparatus for a disc brake, and more particularly, to a mechanical parking brake apparatus installed in a caliper housing.
In general, a brake device is provided on a wheel of an automobile so that a braking force is obtained by operating a brake pedal while driving, and a braking force is generated by an operation of a lever of a parking brake during parking so that a stop state can be maintained.
As an example of the brake device configured as described above, a disc brake equipped with a parking brake disclosed in US Patent No. 5060765 will be described with reference to FIG. 1. As shown, the disc brake is rotatably provided with an actuating lever 38 on one side of the main body 20 of the caliper housing 10 in which the pad plates 14, 16 and the disc 12 are installed. In the lever 38, the shaft 34 is axially coupled to allow the ramp 46 and the ball 48 to slide, and the shaft 34 is push rod 50 within the main body 20. It is configured to be in contact with the piston 30 connected with.
Therefore, when the driver pulls the brake handle to park the vehicle, the operating lever 38 rotates, and then the shaft 34 which is axially coupled with the lever 38 rotates. Then, the shaft 34 is guided to the ball 48 to rotate forward along the inclined groove of the lamp 46, and pushes the push rod 50 to operate the piston 30. Finally, the piston 30 generates the braking force by bringing the pads 14 and 16 into close contact with the disk 12 side.
However, in the above structure, there was a problem in that the lever ratio of the operating lever coupled to the parking cable cannot be variously adjusted to meet the needs of the user.
The present invention is to solve the above problems, it is an object of the present invention to provide a parking brake device of the disc brake to improve the lever ratio.
Parking brake apparatus of the disc brake according to the present invention for achieving the above object is a caliper housing consisting of a finger portion and a main body portion to contact the pad plate provided on both sides of the disk to the disk, and a cylinder provided in the main body portion of the caliper housing and And a piston provided to be slidable in the cylinder to move the pad plate to the disk by thrust generated hydraulically or mechanically, an operating lever connected to the parking cable and rotatably installed, and a rotational movement of the operating lever. In the parking brake apparatus of the disc brake having a cam means consisting of a lamp and a ball and an operating shaft provided on the rear of the cylinder to convert the piston into a linear motion, and a push rod for transmitting the linear motion of the cam means to the piston, Above operation The burr includes a first planar portion coupled to the cam means, a bent portion extending to one side from the first plane portion, and a second planar portion extending in a form overlapping the first plane portion at the bent portion. Characterized in that.
In addition, the second flat portion is characterized in that formed in the opposite direction to the caliper housing.
The apparatus may further include a first connecting portion formed on the first flat portion to be coupled to the cam means, and a second connecting portion formed on the second flat portion to be coupled to the parking cable, the first connecting portion being connected to the second connecting portion. The distance is provided as 30.5mm, the distance from the first connecting portion to the bent portion is characterized in that provided by 46.5mm.
Parking brake device of the disc brake according to the present invention can be easily obtained the lever ratio required by the user as the operating lever is bent in the overlapping direction. In addition, as the operating lever is bent in the opposite direction to the caliper housing, there is an effect that the interference between the operating lever and the caliper housing can be minimized.
Hereinafter, a parking brake device for a disc brake according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 2 is a cross-sectional view schematically showing a disc brake provided with a parking brake apparatus according to the present invention, and FIG. 3 is an exploded perspective view showing a part of FIG. 2.
As shown in FIG. 2, the disc brake according to the present invention presses and brakes the disc 1 rotating like a wheel by using a pair of pad plates 2 and 3 from both sides. The caliper housing 100 is integrally formed with the finger portion 105 and the main body portion 110 interposed therebetween. Here, the pad plates 2 and 3 are movably coupled to a carrier (not shown) fixed to the vehicle, such that the finger portion 105 and the main body portion 110 move in the center direction from the left and right sides of the disk 1. The pad plates 2 and 3 are brought into close contact with the disc 1.
The main body 110 of the caliper housing 100 is provided with a cylinder 114 opened to the disk 1 side to install a piston 112 for moving the pad plates 2 and 3 to the disk 1 side. . At the rear of the cylinder 114, a cam means 130 for converting the rotational movement of the operating lever 90 into the linear movement of the piston 112 is provided. The cam means 130 consists of an operating shaft 131, a lamp 134, and a ball 137 interposed between the shaft 131 and the lamp 134.
The piston 112 is provided in a cylindrical shape that is hollow in a cup shape to be slidably inserted into the cylinder 114, and forms the cylinder 114 and a predetermined pressure chamber 115. Therefore, when hydraulic pressure is provided from the master cylinder (not shown), the pressure chamber 115 expands and moves the piston 112 forward.
The adjuster 120 is provided in the cup-shaped interior of the piston 112. In this case, an air discharge groove (not shown) is provided in the piston 112 to circulate the hydraulic pressure smoothly. The adjuster 120 prevents the pad plates 2 and 3 that are gradually worn away from the disk 1 so as to maintain a constant distance at all times. The adjuster 120 is rotatably fitted inside the piston 112. A screw thread (not shown) is formed on the outer circumferential surface thereof. One end of the push rod 125 which is in contact with the operating shaft 131 of the cam means 130 is screwed into this thread (not shown).
The cylinder 114 has a cam 112 in its interior, for example, behind the cylinder 114 so that the piston 112 can be operated not only by hydraulic pressure as described above, but also by the rotation of the operating lever 90. It is provided. The cam means 130 consists of the operating shaft 131, the lamp 134, and the ball 137 as described above.
The operating shaft 131 has a T shape and includes a flange portion 132 and a shaft shaft 133. The flange portion 132 has a disc shape and is in contact with the push rod 125, and the shaft shaft 133 is axially coupled to the operation lever 90 through the body portion 110.
The lamp 134 is a cylindrical shape having a hollow, the front of the lamp 134 is provided with a guide groove 138 for guiding the ball 137 to linearly move the operating shaft 131, the rear of the lamp Protrusion member 135 for preventing the rotation of the 134 is protruded is inserted into the coupling hole 116 is provided in the body portion 110.
Next, an operating lever according to an embodiment of the present invention will be described.
As shown in FIG. 3, the operating lever 90 according to the embodiment of the present invention includes a first flat portion 91 coupled to one side of the caliper housing 100. The first plane portion 91 is formed with a first connection portion 91a coupled to the cam male end 130.
In addition, the operating lever 90 has a bent portion 92 that extends from one side of the first plane portion 91 to one side. The bent portion 92 may be bent in any one direction with an angle of approximately 90 degrees.
In addition, the operating lever 90 includes a second planar portion 93 that extends in a form that overlaps the first plane portion 91 at the bent portion 92. The second plane portion 93 is formed with a second connection portion 93a coupled to the parking cable (not shown).
The distance L1 from the first connecting portion 91a to the second connecting portion 93a of the operating lever 90 according to the preferred embodiment of the present invention is 30.5 mm, and the bent portion 92 at the first connecting portion 91a. Distance L2 may be provided as 46.5mm.
Disc brake according to an embodiment of the present invention configured as described above was able to vary the lever ratio. That is, as the second flat portion is bent in the direction overlapping with the first flat portion, the lever ratio 12: 1 to 13: 1, which is required by the user, can be easily obtained, and the second flat portion is opposite to the caliper housing. As it is bent, the interference between the operating lever and the caliper housing can be minimized.
Next, the operation of the disc brake according to the present invention configured as described above will be described with reference to FIG.
First, when the driver presses the pedal, the hydraulic pressure is generated in the master cylinder. The hydraulic pressure flows into the pressure chamber 115 inside the cylinder 114 through the oil inlet provided in the caliper housing 100, and moves the piston 112 toward the disk 1 as the pressure chamber 115 expands. . As a result, the pad plate 3 on one side is brought into close contact with the disk 1 first, and the body portion 110 is pushed backward by the continuous pressure expansion, and the finger portion 105 pushes the pad plate 2 on the other side. In close contact with the disk 1, the wheel is braked.
On the other hand, when the driver pulls the hand brake for parking, the parking cable (not shown) is pulled to rotate the operation lever 90. Then, the operating shaft 131 axially coupled within the operating lever 90 and the main body 110 is rotated, and then the operating shaft while the ball 137 moves along the guide groove 138 of the lamp 134. 131 linearly moves. As a result, the push rod 125, which is in contact with the flange portion 132 of the shaft 131, is moved to the disk 1 side and the piston 112 is operated to move the pad plates 2 and 3 to the disk 1 side. It comes in close contact.
On the other hand, when the driver releases the hand brake, the push rod 125 is pushed backward by the return spring 150 provided in the cylinder 114, and the operating shaft 131 returns to the original state, and the torsion spring 7 By the operation lever 90 is returned to the initial position accurately.
1 is a view showing a parking brake device of a conventional disc brake.
2 is a view illustrating a parking brake apparatus of a disc brake according to an embodiment of the present invention.
3 is an enlarged view of the operation lever illustrated in FIG. 2.
* Brief description of the main references in the drawings *
1.Disk 2,3.Pad plate
90.Operating lever 91..First plane
92 ... Bend 93 ... Second Plane
100..Caliper Housing 110..Main Body
125. Push rod 130. Cam means
134 Lamp

Claims (3)

  1. A caliper housing composed of a finger portion and a main body portion so as to closely contact pads provided on both sides of the disk, a cylinder provided in the main body portion of the caliper housing, and a sliding force provided by the cylinder so as to be slidable to the cylinder. A piston for moving the pad plate to the disc side, an operating lever connected to the parking cable and rotatably installed, an operating shaft provided at the rear of the cylinder to convert the rotational movement of the operating lever into a linear movement of the piston; In the parking brake device of the disc brake having a cam means consisting of a ramp and a ball, and a push rod for transmitting the linear movement of the cam means to the piston,
    The actuating lever includes a first flat portion coupled to the cam means, a bent portion extending to one side from the first flat portion, and a second extended portion bent to overlap the first flat portion at the bent portion. Parking brake device of the disc brake, characterized in that it comprises a flat portion.
  2. The method of claim 1,
    And the second planar portion is formed in a direction opposite to the caliper housing.
  3. The method of claim 1,
    A first connection portion formed on the first flat portion to be coupled to the cam means;
    Further comprising a second connection portion formed in the second flat portion to be coupled to the parking cable,
    The distance from the first connection portion to the second connection portion is provided with 30.5mm, the distance from the first connection portion to the bent portion is provided with a 46.5mm disc brake parking brake device.
KR1020080103422A 2008-10-22 2008-10-22 Parking brake device of disk brake KR20100044331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080103422A KR20100044331A (en) 2008-10-22 2008-10-22 Parking brake device of disk brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080103422A KR20100044331A (en) 2008-10-22 2008-10-22 Parking brake device of disk brake

Publications (1)

Publication Number Publication Date
KR20100044331A true KR20100044331A (en) 2010-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080103422A KR20100044331A (en) 2008-10-22 2008-10-22 Parking brake device of disk brake

Country Status (1)

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KR (1) KR20100044331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111923876A (en) * 2020-08-19 2020-11-13 李宜昌 Auxiliary brake device for vehicle running when brake failure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111923876A (en) * 2020-08-19 2020-11-13 李宜昌 Auxiliary brake device for vehicle running when brake failure
CN111923876B (en) * 2020-08-19 2021-09-10 黄燕梅 Auxiliary brake device for vehicle running when brake failure

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E601 Decision to refuse application