KR20110080220A - Electric disc brake - Google Patents

Electric disc brake Download PDF

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Publication number
KR20110080220A
KR20110080220A KR1020100000342A KR20100000342A KR20110080220A KR 20110080220 A KR20110080220 A KR 20110080220A KR 1020100000342 A KR1020100000342 A KR 1020100000342A KR 20100000342 A KR20100000342 A KR 20100000342A KR 20110080220 A KR20110080220 A KR 20110080220A
Authority
KR
South Korea
Prior art keywords
motor
heat dissipation
screw shaft
coupled
friction pads
Prior art date
Application number
KR1020100000342A
Other languages
Korean (ko)
Inventor
김명준
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 KR1020100000342A priority Critical patent/KR20110080220A/en
Publication of KR20110080220A publication Critical patent/KR20110080220A/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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • 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
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • 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
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • 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
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/52—Rotating members in mutual engagement with non-parallel stationary axes, e.g. worm or bevel gears

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

Abstract

PURPOSE: An electric disk brake is provided to prevent the lowering of braking force if the temperature of a disk brake rises by braking for long hours by radiating heat generated by braking using a radiator member. CONSTITUTION: An electric disk brake comprises a disk(10) rotating together with wheels of a vehicle, first and second friction pads(11,12) arranged on two sides of the disk to pressurize two sides of the disk and to apply the brake, and a pressure device(40) installed to the caliper housing to apply the brake. The pressure device includes a pressure member(41) installed to the caliper housing to pressurize one of the friction pads, a screw shaft(42) coupled to the pressure member, a motor(45) generating rotary power forward and backward, a speed reducer(50) amplifying the rotary power generated from the motor and transferring to the screw shaft, and a radiator member(60) radiating heat generated by the driving force of the motor and the frictional force of the pressure member.

Description

Electric Disc Brake {ELECTRIC DISC BRAKE}

The present invention relates to an electric disc brake, and more particularly, to an electric disc brake capable of dissipating heat generated by the motor and the pressing member during braking.

In general, an electric disc brake employs an electric motor that is operated as a power source of a driving device that presses a friction pad, unlike a conventional hydraulic disc brake.

Korean Patent Laid-Open Publication No. 2000-0014476 discloses an example of such an electric disc brake. The disclosed electric disc brake includes a disc that rotates together with a wheel of a vehicle, first and second friction pads disposed on both sides of the disc to press the disc, and retractably installed to press the first and second friction pad. It includes a pressure member, a motor for generating a driving force, and a reducer for amplifying and transmitting the driving force generated from the motor to the pressure member.

However, in the conventional electric disc brake, there is a problem in that the first and second friction pads are in close contact with both sides of the disc, that is, heat generated by the driving force of the motor and the frictional force of the pressing member generated in the braking process.

The present invention is to solve such a problem, it is an object of the present invention to provide an electric disk brake improved to a structure that can dissipate heat generated during braking.

An electric disc brake according to a preferred embodiment of the present invention for achieving this object is capable of moving back and forth to the carrier for pressing the friction pads, the carrier for supporting the friction pads, and for the pressing of the friction pads. A supported caliper housing and a pressing device for pressing the friction pad,

The pressurizing device includes a pressurizing member installed in the caliper housing so as to pressurize one of the friction pads, a screw shaft coupled to the pressurizing member, a motor for generating rotational force in a forward direction and a reverse direction, and generated from the motor. And a heat dissipation member configured to amplify rotational force and transmit the amplification force to the screw shaft, and to dissipate heat generated by the driving force of the motor and the frictional force of the pressing member.

The heat dissipation member may include a heat dissipation fan disposed between the motor and the speed reducer and a heat dissipation fin provided on a surface of the speed reducer.

The pressurization apparatus further includes a drive shaft having a worm wheel coupled to the screw shaft and the screw shaft and having a worm gear coupled to the worm wheel.

The pressurizing device further includes a drive shaft coupled to the first spur gear coupled to the screw shaft and a second spur gear coupled to the screw shaft and engaged with the first spur gear.

The heat dissipation member may include a first heat dissipation fan disposed on the screw shaft, a second heat dissipation fan disposed between the motor and the speed reducer, and a heat dissipation fin provided on a surface of the speed reducer.

In the electric disc brake according to the present invention, since heat generated during braking can be radiated by the heat radiating member, there is an effect of preventing the braking force from being lowered even when the temperature of the disc brake increases due to prolonged braking.

1 is a cross-sectional view of an electric disc brake according to a first embodiment of the present invention.
2 and 3 are cross-sectional views of the electric disc brake according to the second embodiment of the present invention.
4 and 5 are cross-sectional views of the electric disc brake according to the third embodiment of the present invention.

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

1 is a cross-sectional view of an electric disc brake according to a first embodiment of the present invention.

Disc brake according to the present invention, as shown in Figure 1, the disk 10 to rotate with the wheels of the vehicle, respectively, on both sides of the disk 10 to pressurize both sides of the disk 10 to perform braking Pressing installed in the caliper housing 20 for pressurizing the first and second friction pads 11 and 12, the first and second friction pads 11 and 12, and the braking operation 20 for braking operation. Apparatus 40 is provided.

The first and second friction pads 11 and 12 are supported by the carrier 30 fixed to the vehicle body so as to be able to move forward and backward toward both sides of the disk 10, and the caliper housing 20 is also supported by the first and second friction pads 11 and 12. FIG. The second friction pads 11 and 12 are supported by the carrier 30 so as to advance and retreat in the pressing direction.

The caliper housing 20 has a hollow body portion 21, an extension portion 22 extending from the body portion 21 toward the second friction pad 12, and a rear surface of the second friction pad 12 to support the caliper housing 20. And a finger portion 23 connected to the extension portion 22. And the pressing device 40 is mounted to the body portion 21 of the caliper housing 20 to press the first friction pad (11).

The pressurizing device 40 is coupled to the pressurizing member 41 and the pressurizing member 41 installed in the body portion 21 of the caliper housing 20 so as to retract and pressurize and release the first friction pad 11. And a reduction gear unit 50 coaxially connected with the screw shaft 42, the screw shaft 42, and a motor 45 for forward and reverse rotation of the reduction gear 50.

The pressing member 41 is installed in the body portion 21 so as to move back and forth in a restricted state, and has a female screw portion 41a coupled to the screw shaft 42. The structure for limiting the rotation of the pressing member 41 is the outer surface of the pressing member 41 and the inner surface of the body portion 21 coupled correspondingly is polygonal or the outer surface and the body portion 21 of the pressing member 41. It can be implemented by the manner in which the guide means (not shown) in the form of a key and a key groove on the inner surface. Reference numeral X denotes an advancing direction of the pressing member.

The screw shaft 42 has a male screw portion 42a on one side so as to be coupled to the female screw portion 41a of the pressing member 41. The screw shaft 42 is rotatably installed in the body portion 21 so as to be parallel to the direction X in which the pressing member 41 moves forward and backward. In order to support the screw shaft 42, the bearing 43 is installed in the body 21 spaced apart from each other.

The reduction gear 50 includes a sun gear 51 provided on the shaft 46a of the motor 45, a plurality of planetary gears 52 disposed around the sun gear 51 to be engaged with the sun gear 51, A carrier connecting the internal gear 53 fixed to the outer side of the planetary gears 52 so as to mesh with the planetary gears 52, the shaft 52a of the planetary gears 52, and the screw shaft 42; 54). The reduction gear 50 is the planetary gears 52 when the sun gear 51 is rotated by the operation of the motor 45, the revolution of the planetary gears 52 through the carrier 54 of the screw shaft By being transmitted to 42, the deceleration rotation of the screw shaft 42 is made.

The motor 45 is fixed to the body portion 21 of the caliper housing 20 through the fastening of the fixing screw 46.

In addition, in the first embodiment of the present invention, as shown, a heat dissipation member 60 for dissipating heat generated by the driving force of the motor 45 and the frictional force of the pressing member 41 is provided.

The heat dissipation member 60 as described above is provided on the surface of the heat dissipation fan 61 installed on the motor shaft 45a of the motor 45 connected to the sun gear 51 of the speed reducer 50 and the speed reducer 50. It includes a heat radiation fin 62 is disposed. At this time, the heat radiating fan 61 as described above is rotated when the motor 45 is rotated to radiate heat generated by the driving force of the motor 45 and the frictional force of the pressing member 41, the heat radiating fin 62 is It serves to increase the heat dissipation area on the surface of the reducer 50.

2 is a cross-sectional view of an electric disc brake according to a second embodiment of the present invention. Hereinafter, the same components as those of the electric disc brake shown in FIG. 1 are given the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 2, the pressurizing device includes a pressurizing member 41 and a pressurizing member installed in the body portion 21 of the caliper housing 20 so as to pressurize and release the first friction pad 11. Drive shaft 153 having a screw shaft 42 coupled to the screw shaft 42, a worm wheel 151 coupled to the screw shaft 42, and a worm gear 152 installed to intersect the screw shaft 42 and coupled to the worm wheel 151. ), A motor 45 for forward and reverse rotation of the drive shaft 153, and a reducer 50 provided between the motor shaft 45a and the drive shaft 153 of the motor 45.

The pressing member 41 is installed in the body portion 21 so that the rotation can be advanced in a limited state.

The screw shaft 42 is rotatably installed in the body portion 21 so as to be parallel to the direction in which the pressing member 41 advances, and is spaced apart from each other in the body portion 21 for supporting the screw shaft 42. The first bearing 43 and the second bearing 44 are installed at the position. At this time, the second bearing 44 is a thrust bearing, and receives the reaction force generated in the advancing direction of the pressing member during the braking operation and transmitted through the screw shaft.

The worm wheel 151 is coupled to the outer surface of the screw shaft 42 to rotate in the empty space inside the body portion 21, the drive shaft 153 is screwed so that the worm gear 152 provided on the outer surface is engaged with the worm wheel 151. It is arranged in the direction intersecting with the axis 42. That is, in the electric disc brake of the second embodiment, the center of rotation of the drive shaft 153 and the advancing direction of the pressing member 41 are arranged to be orthogonal to each other. The drive shaft 153 is rotatably supported by the body portion 21 and is installed such that a portion in which the worm gear 152 is installed enters the body portion 21, and one end thereof penetrates the lower side of the body portion 21 to allow the body to rotate. It extends out of the part 21.

The motor shaft 45a of the motor 45 and the drive shaft 153 extending outward of the body portion 21 are connected to the power transmission by the reducer 50.

The reduction gear 50 is provided between the motor shaft 45a and the drive shaft 153 of the motor 45 as described above. The reduction gear 50 is the planetary gears 52 when the sun gear 51 is rotated by the operation of the motor 45, the idle of the planetary gears 52 through the carrier 54 the drive shaft ( By being transmitted to 153, the deceleration and rotation of the drive shaft 153 is performed.

In addition, in the second embodiment of the present invention, as shown, a heat dissipation member 160 for dissipating heat generated by the driving force of the motor 45 and the frictional force of the pressing member 41 is provided.

As shown in FIG. 2, the heat dissipation member 160 includes a heat dissipation fan 161 installed on the screw shaft 42 coupled to the pressure member 41, and a heat dissipation fin 162 disposed on the surface of the reducer 50. It includes. At this time, the heat dissipation fan 161 as described above is rotated when the motor 45 rotates to dissipate heat generated by the driving force of the motor 45 and the frictional force of the pressing member 41, and the heat dissipation fin 162 is It serves to increase the heat dissipation area on the surface of the reducer 50.

In addition, the heat dissipation member 160 is another heat dissipation fan 163 installed between the motor 45 and the reduction gear 50, that is, on the motor shaft 45a of the motor 45, as shown in FIG. 3. It may further include.

4 is a cross-sectional view of an electric disc brake according to a third embodiment of the present invention. Hereinafter, the same components as those of the electric disc brake shown in FIG. 1 are given the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 4, the pressurizing device 40 of the present embodiment is a pressurizing member installed in the body portion 21 of the caliper housing 20 so as to retract and pressurize and release the first friction pad 11. (41), the screw shaft 42 coupled to the pressing member 41, the first spur gear 251 coupled to the screw shaft 42, is installed in parallel with the screw shaft 42 and the first spur gear 251 ), The drive shaft 253 to which the second spur gear 252 is engaged, the motor 45 to rotate the drive shaft 253 in the forward and reverse directions, and the rotation of the motor shaft 45a is reduced to the drive shaft 253. The reducer 50 is provided between the motor shaft 45a and the drive shaft 253 so as to be transmitted.

In addition, in the third embodiment of the present invention, as shown, a heat dissipation member 260 for dissipating heat generated by the driving force of the motor 45 and the friction force of the pressing member 41 is provided.

As shown in FIG. 4, the heat dissipation member 160 includes a heat dissipation fan 261 installed on the screw shaft 42 coupled to the pressing member 41, and a heat dissipation fin 262 disposed on the surface of the reducer 50. It includes. At this time, the heat radiating fan 261 as described above is rotated when the motor 45 is rotated to radiate heat generated by the driving force of the motor 45 and the frictional force of the pressing member 41, the radiating fin 262 is It serves to increase the heat dissipation area on the surface of the reducer 50.

In addition, the heat dissipation member 260 is another heat dissipation fan 263 which is installed between the motor 45 and the reducer 50, that is, on the motor shaft 45a of the motor 45, as shown in FIG. 5. It may further include.

In addition to this, the present invention may be variously modified. For example, the reducer described herein is a planetary gear reducer, but the reducer may be a harmonic reducer, a worm gear reducer, or the like.

Therefore, in the present invention, since the heat generated by the driving force of the motor and the frictional force of the pressing member can be dissipated by the heat dissipation member including the heat dissipation fan and the heat dissipation fin. can do.

10 disc 11: first friction pad,
12: second friction pad 20: caliper housing,
30 carrier 40 pressurization device,
41: pressure member 42: screw shaft,
45: motor 45a: motor shaft
50: reduction gear device 60,160,260: heat radiation member
61,161,163,261,263: heat dissipation fan 62,162,262: heat dissipation fin
151: worm wheel 152: worm gear
153: drive shaft 261: first spur gear
262: second spur gear 263: drive shaft

Claims (5)

An electric motor including friction pads for pressurizing the disk, a carrier for supporting the friction pads, a caliper housing removably supported on the carrier for pressurization of the friction pads, and a pressing device for pressing the friction pad. In disc brakes,
The pressurizing device includes a pressurizing member installed in the caliper housing so as to pressurize one of the friction pads, a screw shaft coupled to the pressurizing member, a motor for generating rotational force in a forward direction and a reverse direction, and generated from the motor. And a heat dissipation member configured to amplify rotational force and transmit it to the screw shaft, and a heat dissipation member to dissipate heat generated by the driving force of the motor and the frictional force of the pressing member. The method of claim 1,
The heat dissipation member includes a heat dissipation fan disposed between the motor and the speed reducer, and a heat dissipation fin provided on a surface of the speed reducer. The method of claim 1,
The pressurization device further comprises a drive shaft having a worm wheel coupled to the screw shaft and the screw shaft and a drive shaft having a worm gear coupled to the worm wheel. The method of claim 1,
The pressurization device further comprises a drive shaft coupled to the first spur gear coupled to the screw shaft, and the second spur gear is installed parallel to the screw shaft and meshed with the first spur gear. The method according to claim 3 or 4,
The heat dissipation member includes a first heat dissipation fan disposed on the screw shaft, a second heat dissipation fan disposed between the motor and the speed reducer, and a heat dissipation fin provided on a surface of the speed reducer.
KR1020100000342A 2010-01-05 2010-01-05 Electric disc brake KR20110080220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100000342A KR20110080220A (en) 2010-01-05 2010-01-05 Electric disc brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100000342A KR20110080220A (en) 2010-01-05 2010-01-05 Electric disc brake

Publications (1)

Publication Number Publication Date
KR20110080220A true KR20110080220A (en) 2011-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100000342A KR20110080220A (en) 2010-01-05 2010-01-05 Electric disc brake

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KR (1) KR20110080220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114857189A (en) * 2021-02-04 2022-08-05 Ip传输控股公司 Thermal management system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114857189A (en) * 2021-02-04 2022-08-05 Ip传输控股公司 Thermal management system and method
EP4040004A1 (en) * 2021-02-04 2022-08-10 Transportation IP Holdings, LLC Thermal management system
US11773935B2 (en) 2021-02-04 2023-10-03 Transportation Ip Holdings, Llc Thermal management system

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