KR20090043187A - Disk brake for vehicle - Google Patents

Disk brake for vehicle Download PDF

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Publication number
KR20090043187A
KR20090043187A KR1020070108902A KR20070108902A KR20090043187A KR 20090043187 A KR20090043187 A KR 20090043187A KR 1020070108902 A KR1020070108902 A KR 1020070108902A KR 20070108902 A KR20070108902 A KR 20070108902A KR 20090043187 A KR20090043187 A KR 20090043187A
Authority
KR
South Korea
Prior art keywords
return spring
caliper housing
disk
vehicle
stopper
Prior art date
Application number
KR1020070108902A
Other languages
Korean (ko)
Inventor
강정식
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 KR1020070108902A priority Critical patent/KR20090043187A/en
Publication of KR20090043187A publication Critical patent/KR20090043187A/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
    • 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
    • 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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/02—Release mechanisms

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

Abstract

Disc brake for a vehicle according to the present invention is a disc pad that is in close contact with the disc coupled to the wheel of the vehicle to generate a braking force, a carrier for supporting the disc pad retractable, and a piston coupled to the carrier and pressurizing the disc pad A caliper housing which is installed to be possible, an actuating lever rotatably installed on the outside of the caliper housing to interlock with the piston, and a return spring for returning the actuating lever, and one side of the caliper housing includes a stopper for supporting the return spring. Is provided, the stopper is characterized in that the position fixing portion for supporting a portion of the return spring to fix the position of the return spring spaced apart from the operating lever.

Disc brake, actuating lever, return spring, stopper, anti-friction

Description

Disk brake for vehicle

The present invention relates to a vehicular disk brake, and more particularly to a vehicular disk brake with reduced operating noise.

In general, a brake mounted on a vehicle is a device for decelerating, stopping or maintaining a stopped vehicle, and includes a drum brake and a disc brake. Among them, the disc brake is obtained by pressing the pads on both sides of the disk rotating together with the wheels of the vehicle to generate a braking force by friction, and in the case of repeated use, the drum brake may be inflated due to the frictional heat, and thus the drum brake may not work smoothly. It can compensate for the shortcomings.

Typically, the disc brake is a caliper provided with a carrier on which the inner disk pad and the outer disk pad which are in close contact with the rotating disk together with the wheel of the vehicle to generate a braking force, and a piston coupled to the carrier and pressurizing the inner disk pad. And a housing. The carrier is fixedly installed in the knuckle of the vehicle body, and the caliper housing is removably coupled to the carrier by the guide rod. In this general disc brake, when the piston acts to press the inner disk pad, the inner disk pad is in close contact with the disk, and the caliper housing is moved by the reaction force generated at this time, and the braking force is generated by bringing the outer disk pad into close contact with the disk.

1 is a perspective view schematically showing a vertical disc brake.

As shown in FIG. 1, a conventional disc brake includes a carrier 11 on which an inner disk pad (not shown) and an outer disk pad 15 are retractable, and a guide rod 14 to the carrier 11. A caliper housing 12 having a cylinder 13 coupled to be retractable and having a piston (not shown) retractably installed therein; and an operating lever rotatably mounted to the outside of the cylinder 13 to operate the piston. (17) and a return spring (18) for returning the actuating lever (17). In addition, a cable guide 16 for guiding a cable (not shown) is coupled to one side of the caliper housing 12, and a stopper 19 for supporting the return spring 18 is provided at another side of the caliper housing 12. It is provided with a protrusion.

The actuating lever 17 is used when the disc brake is used as the parking brake, and a cable is connected to the actuating lever 17. When the cable is pulled, the operating lever (17) rotates while the operating member (not shown) installed inside the cylinder (13) presses the piston in conjunction with the inner disk pad is in close contact with the disk. Then, the caliper housing 12 is pushed by the reaction force generated when the inner disk pad is in close contact with the disk, the outer disk pad 15 is in close contact with the disk.

When the actuating lever 17 rotates, the return spring 18 coupled to the actuating lever 17 is elastically changed so that one end thereof is supported by the stopper 19, and when the external force of the cable is released, the return spring 18 ) Returns the operating lever 17 to its original state.

However, in the conventional vehicle disc brake as described above, since the operating lever and the return spring are in contact with each other, friction occurs between the operating lever and the return spring when the operating lever rotates by an external force through a cable or by an elastic force of the return spring. do. Therefore, friction noise is generated when the operating lever rotates, and a problem occurs that the contact portion between the operating lever and the return spring wears when used for a long time.

The present invention is to solve the above problems, by separating the operating lever and the return spring from each other, the friction noise is not generated between the operating lever and the return spring during rotation of the operating lever, wear is generated between them It is an object of the present invention to provide a disc brake for a vehicle that can be prevented.

The disk brake for a vehicle according to the present invention for achieving the above object is a disk pad that is in close contact with the disk coupled to the wheel of the vehicle to generate a braking force, a carrier for supporting the disk pad retractably, and coupled to the carrier and the A caliper housing in which a piston pressurizing the disk pad is removably installed, an actuating lever rotatably installed on the outside of the caliper housing so as to cooperate with the piston, and a return spring for returning the actuating lever. One side of the caliper housing is provided with a stopper for supporting the return spring, the stopper is provided with a position fixing portion for supporting a portion of the return spring to fix the return spring in a state spaced apart from the operating lever It is characterized by.

Here, the stopper may include a fixed shaft protruding to the outside of the caliper housing, the position fixing portion may be a position fixing groove provided on one side of the fixed shaft so that a portion of the return spring can be inserted.

The fixed shaft may be provided with first and second locking parts spaced apart from each other with the position fixing groove therebetween.

In addition, the return spring is made of a coiled torsion spring, one end of which is fixed to the operating lever and the other end may be inserted into the position fixing groove.

Since the disc brake for a vehicle according to the present invention described above is supported so that the return spring for returning the actuating lever is spaced apart from the actuating lever by the stopper, friction does not occur between the actuating lever and the return spring when the actuating lever rotates. And no friction noise is generated.

In addition, the disc brake for a vehicle according to the present invention is supported so that the return spring is spaced apart from the actuating lever by the stopper so that wear does not occur between the actuating lever and the return spring when used for a long time.

Hereinafter, a disk brake for a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a side view schematically showing a vehicle disk brake according to an embodiment of the present invention, Figure 3 is a perspective view showing a part of the configuration of the vehicle disk brake according to an embodiment of the present invention.

As shown in FIG. 2, a vehicle disc brake according to an embodiment of the present invention includes a carrier 24 having an inner disk pad 22 and an outer disk pad 23 removably mounted thereon, and a carrier 24. A caliper housing 31 having a cylinder 32 to which the piston 33 is retractably coupled and to which the piston 33 for pressing the inner disk pad 22 is retractably installed, and the cylinder 32 to operate the piston 33. And a return spring 42 for returning the actuating lever 41 and an actuating lever 41 rotatably installed on the outside thereof.

The carrier 24 is fixed to the knuckle (not shown) of the vehicle body. The inner surface of the carrier 24 is provided with a plurality of slide grooves (not shown) for guiding the inner disk pad 22 and the outer disk pad 23. In addition, a plurality of rod coupling portions 25 to which the guide rods 26 are coupled to the outside of the carrier 24 are provided.

The inner disk pad 22 and the outer disk pad 23 each have a guide protrusion (not shown) inserted into the slide groove, and face each other with the disk 21 coupled to the wheel (not shown) of the vehicle. It is provided in the inside of the carrier 24 so that a slide movement is possible, respectively. These inner disk pads 22 and the outer disk pads 23 slide and move in close contact with both surfaces of the disk 21 to generate braking force.

The caliper housing 31 includes a cylinder 32 in which the piston 33 is removably installed, a finger portion 34 for pressing the outer disk pad 23, and a plurality of rod couplings to which the guide rod 26 is coupled. The unit 35 is included. The caliper housing 31 is removably coupled to the carrier 24 by a plurality of guide rods 26. The piston 33 installed in the cylinder 32 presses the inner disk pad 22 to bring the inner disk pad 22 into close contact with the disk 21. Reaction force is generated when the piston 33 presses the inner disk pad 22, and the finger portion 34 pushes the outer disk while the caliper housing 31 is supported by the guide rod 26 by the reaction force. The pad 23 is in close contact with the disc 21. The outer side of the caliper housing 31 is provided with a cable guide 37 for guiding the cable 38.

The operation lever 41 is rotatably installed at one outer side of the cylinder 32. The actuating lever 41 is interlocked with an actuating member (not shown) such as a cam or a strut installed in the cylinder 32, and the actuating member advances the piston 33 when the actuating lever 41 rotates. . One side of the operation lever 41 is coupled to the cable 38, the operation lever 41 is rotated when the cable 38 is pulled.

The return spring 42 is for returning the operating lever 41 rotated by the cable 38 to its original position, and is composed of a coiled torsion spring. One end of the return spring 42 is coupled to the operation lever 41, and the other end thereof is supported by the stopper 43 fixed to an outer side of the caliper housing 31. Therefore, when an external force is applied through the cable 38, the return spring 42 is elastically deformed while the actuating lever 41 rotates. When the external force is released, the return spring 42 is restored and the actuating lever 41 is returned to its original position. Return to.

As shown in FIG. 2, the stopper 43 includes a fixed shaft 44 protruding from the outside of the caliper housing 31, and supports a part of the return spring 42 at an end of the fixed shaft 44. The position fixing part 48 is provided. Here, the position fixing portion 48 is for supporting the return spring 42 to prevent movement in the axial direction, the position fixing groove 47 provided at the end of the fixed shaft 44, and the position fixing groove 47 ) And the first and second locking parts 45 and 46 provided to be spaced apart from each other. The width of the positioning groove 47 is one end of the return spring 42 is inserted, but slightly larger than the thickness of one end of the return spring 42 so that one end does not move in the axial direction of the fixed shaft 44 It is made in size. Then, when one end of the return spring 42 is inserted into the position fixing groove 47, the first and second catching portions 45 and 46 are not separated from the position fixing groove 47 by the one end of the return spring 42. Prevent it. The positioning groove 47 is located outside the portion adjacent to the return spring 42 of the operation lever 41. Therefore, one end of the return spring 42 is inserted into the position fixing groove 47 so that the return spring 42 is fixed in a position slightly spaced apart from the operating lever 41.

In the present invention, the position fixing portion 48 for fixing the position of the return spring 42 to be spaced apart from the operating lever 41 is not limited to the groove shape, and the end of the return spring 42 may be caught in various ways. It may be made of a structure.

Hereinafter, an operation of a vehicular disk brake according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 2, when the cable 38 is pulled, the actuating lever 41 rotates in the clockwise direction in the drawing, and the actuating member installed inside the cylinder 32 is connected to the actuating lever 41 so that the piston ( 33) is advanced toward the disc 21. At this time, the inner disk pad 22 is pushed by the piston 33 and slides to be in close contact with one side of the disk 21. When the inner disk pad 22 is in close contact with the disk 21, the caliper housing 31 is pushed in the direction opposite to the piston 33 movement direction by the reaction force generated at this time. When the caliper housing 31 is pushed, the finger 34 presses the outer disk pad 23 so that the outer disk pad 23 is in close contact with the other side of the disk 21. Thus, the inner disk pad 22 and the outer disk pad 23 are in close contact with both surfaces of the disk 21 to generate a braking force on the wheel.

On the other hand, when the external force of the cable 38 is released, the operating lever 41 is rotated counterclockwise by the return spring 42 to return, and the piston 33 retreats and the inner disk pad 22 and the outer disk are returned. The pads 23 are spaced apart from the disk 21.

While the operating lever 41 rotates clockwise under the external force of the cable 38 or counterclockwise by the return spring 42, the return spring 42 is operated as shown in FIG. Since it is spaced apart from the lever 41, friction noise is not generated between the actuating lever 41 and the return spring 42 as in the prior art. In addition, since the operating lever 41 and the spring spring 42 are spaced apart, no wear occurs between them even when used for a long time.

1 is a perspective view schematically showing a part of a conventional disc brake for a vehicle.

2 is a side view schematically showing a vehicular disk brake according to an embodiment of the present invention.

3 is a perspective view showing a part of a disc brake for a vehicle according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

21 ... Disc 22,23 ... Inner / Outer Disc Pad

24 Carrier 26 Guide rod

31 ... caliper housing 32 ... cylinder

33 ... piston 34 ... finger

38.Cable 41.Working lever

42 ... return spring 43 ... stopper

44. Fixed shaft 47 ... Position fixed groove

Claims (4)

A caliper housing in which a disk pad that is in close contact with a disk that is coupled to a wheel of a vehicle and generates a braking force, a carrier supporting the disk pad in a retractable manner, and a piston coupled to the carrier and urging the disk pad in a retractable manner are installed. And a working lever rotatably installed on the outside of the caliper housing so as to cooperate with the piston, and a return spring for returning the working lever. One side of the caliper housing is provided with a stopper for supporting the return spring, the stopper is provided with a position fixing portion for supporting a portion of the return spring to fix the position of the return spring spaced apart from the operating lever Disc brake for a vehicle, characterized in that. The method of claim 1, The stopper includes a fixed shaft protruding to the outside of the caliper housing, the position fixing portion is a vehicle disc brake, characterized in that the positioning groove provided on one side of the fixed shaft so that a portion of the return spring can be inserted. The method of claim 2, The fixed shaft is provided with a vehicle disc brake, characterized in that provided with the first and second engaging portions spaced apart from each other with the position fixing groove therebetween. The method of claim 2, The return spring is made of a coiled torsion spring, one end of which is fixed to the actuating lever and the other end is inserted into the positioning groove.
KR1020070108902A 2007-10-29 2007-10-29 Disk brake for vehicle KR20090043187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070108902A KR20090043187A (en) 2007-10-29 2007-10-29 Disk brake for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070108902A KR20090043187A (en) 2007-10-29 2007-10-29 Disk brake for vehicle

Publications (1)

Publication Number Publication Date
KR20090043187A true KR20090043187A (en) 2009-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070108902A KR20090043187A (en) 2007-10-29 2007-10-29 Disk brake for vehicle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943830A (en) * 2012-11-23 2013-02-27 常州南车铁马科技实业有限公司 Hydraulic braking clamp for track traffic
US9051982B2 (en) 2012-09-10 2015-06-09 Mando Corporation Electric caliper brake with parking function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9051982B2 (en) 2012-09-10 2015-06-09 Mando Corporation Electric caliper brake with parking function
CN102943830A (en) * 2012-11-23 2013-02-27 常州南车铁马科技实业有限公司 Hydraulic braking clamp for track traffic
CN102943830B (en) * 2012-11-23 2015-06-17 常州南车铁马科技实业有限公司 Hydraulic braking clamp for track traffic

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A201 Request for examination
E601 Decision to refuse application