WO2019042316A1 - Frein à disque et véhicule - Google Patents

Frein à disque et véhicule Download PDF

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Publication number
WO2019042316A1
WO2019042316A1 PCT/CN2018/102948 CN2018102948W WO2019042316A1 WO 2019042316 A1 WO2019042316 A1 WO 2019042316A1 CN 2018102948 W CN2018102948 W CN 2018102948W WO 2019042316 A1 WO2019042316 A1 WO 2019042316A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
parking
disc
motor
screw
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/102948
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English (en)
Chinese (zh)
Inventor
郑祖雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
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 BYD Co Ltd filed Critical BYD Co Ltd
Publication of WO2019042316A1 publication Critical patent/WO2019042316A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16D55/04—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 moving discs or pads away from one another against radial walls of drums or cylinders
    • F16D55/14—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 moving discs or pads away from one another against radial walls of drums or cylinders with self-tightening action, e.g. by means of coacting helical surfaces or balls and inclined surfaces
    • F16D55/18—Brakes actuated by a fluid-pressure device arranged in or on the brake
    • F16D55/20—Brakes actuated by a fluid-pressure device arranged in or on the brake comprising an expansible fluid-filled flexible member coaxial with the brake
    • 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
    • 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
    • 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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms

Definitions

  • the present disclosure relates to the field of brakes, and in particular to a disc brake and a vehicle.
  • the brake pedal In the traditional hydraulic or pneumatic brake system, there are obvious disadvantages such as complicated gas-liquid pipeline, difficult maintenance, complicated layout structure, slow braking dynamic response, and low brake comfort performance.
  • the brake pedal In a hydraulic brake system, the brake pedal generates a rebound vibration phenomenon when the anti-lock brake system is activated, which affects the braking comfort performance.
  • the brake pedal mechanism since the brake pedal mechanism is directly connected to the brake transmission device and the brake actuator, the impact force generated when the vehicle collides is directly transmitted to the cab through the brake system, which seriously affects the safety performance of the vehicle.
  • the components of the conventional hydraulic brake system such as the vacuum brake booster, the brake master cylinder, and the oil reservoir are used, so that the structure and the assembly are complicated and bulky. Maintenance problems are difficult, and since the system is provided with hydraulic brake lines and brake fluids that connect the corresponding components, it is necessary to periodically change the hydraulic oil and periodically check for the presence of hydraulic oil leakage.
  • the present disclosure provides a disc brake including a brake caliper body, a brake disc, a first brake block, a service brake unit, and a parking brake unit, the parking brake unit including a station A vehicle motor and a crank slider mechanism that drives the first brake block to move by the crank slider mechanism to press the brake disk.
  • the present disclosure also provides a vehicle including the disc brake as described above.
  • the brake can realize both the service brake and the parking brake function, and the function integration is high and the occupied space is small.
  • the crank slider mechanism when the parking brake unit performs the auxiliary ABS (brake anti-lock) function, the parking motor only needs to rotate at a high speed or reverse, so that the push rod can output a high pulse. The braking force, without the need for the parking motor to continuously switch between forward and reverse or power loss, thus extending the service life of the parking motor.
  • FIG. 1 is a cross-sectional view of a disc brake in accordance with an embodiment of the present disclosure
  • Figure 2 is a partial enlarged view of Figure 1;
  • FIG. 3 is a cross-sectional view of the disc brake taken along line AA of FIG. 1 in accordance with an embodiment of the present disclosure, with the housing omitted;
  • FIG. 4 is a cross-sectional view of the disc brake taken along line AA of FIG. 1 in accordance with another embodiment of the present disclosure, with the housing omitted;
  • Figure 5 is a schematic structural view of a yaw-cone difference planetary reducer
  • Figure 6 is a schematic structural view of an electromagnetic clutch
  • FIG. 7 is a bottom view of a vehicle in accordance with an embodiment of the present disclosure.
  • orientation words used such as “left and right”, generally refer to the left and right of the drawing directions of the corresponding drawings, and the use of these orientation words is for convenience of description only. It is not to be construed as limiting the disclosure.
  • a disc brake including a caliper body 10, a brake disc 20, a first brake block 31, a service brake unit, and a parking system.
  • the moving unit, the service brake unit and the parking brake unit are mounted in the caliper body 10, and the first brake block 31 is slidably mounted in the caliper body 10 and on one side of the brake disk 20.
  • the driving brake unit includes a driving motor 40, a driving speed reduction mechanism 50 and a screw mechanism 60.
  • the driving motor 40 sequentially drives the first brake block 31 to move the brake disc 20 by the driving speed reduction mechanism 50 and the screw mechanism 60.
  • the parking brake unit includes a parking motor 110, a parking reduction mechanism 120, and a crank slider mechanism 130.
  • the parking motor 110 sequentially drives the first brake block 31 to move by the parking reduction mechanism 120 and the crank slider mechanism 130. Tightening the brake disc 20.
  • the disc brake of the present disclosure may be a fixed caliper disc brake or a float caliper disc brake.
  • the caliper body of the fixed caliper disc brake is fixedly mounted on the vehicle body and cannot be moved relative to the vehicle body.
  • the caliper body of the float caliper disc brake is slidably mounted on the vehicle body and is movable relative to the vehicle body in the same direction as the axial direction of the brake disc.
  • the brake further includes a second brake block 32 mounted on the caliper body 10 and located on the brake disc 20 On the other side, the caliper body 10 is axially movable relative to the brake disc 20.
  • the service brake as an example, as shown in FIG. 1 and FIG.
  • the driving motor 40 drives the screw 61 to rotate, so that the nut 62 fitted on the screw 61 is moved to the right, thereby Pushing the first brake block 31 also moves to the right and presses it onto the brake disc 20, so that the brake disc 20 gives the nut 62 a leftward reaction force, which is transmitted to the caliper body 10, so that The caliper body 10 is moved to the left, and the caliper body 10 drives the second brake block 32 to move until the second brake block 32 is also pressed against the brake disk 20. At this time, the brake pads on both sides are pressed against the brake disc 20, thereby clamping the brake disc 20, generating a friction torque that prevents the rotation of the wheel, and realizing the service brake.
  • the screw mechanism 60 can be a rolling screw mechanism.
  • a rolling body such as a ball or a roller is disposed between the nut 62 and the screw 61.
  • the screw mechanism 60 can be a planetary roller screw mechanism. Compared with other screw mechanisms, the planetary roller screw mechanism has the advantages of large load bearing capacity, strong impact resistance, high transmission precision and long service life.
  • the screw mechanism 60 can be a ball screw mechanism.
  • the advantageous effects of using the ball screw mechanism are similar to those of the above-described planetary roller screw, and the description thereof will be omitted herein to avoid redundancy.
  • the present disclosure is not limited thereto, and the screw mechanism 60 may also employ a slide screw mechanism or the like.
  • the screw angle of the screw can be made larger than the self-locking angle to ensure that the screw pair does not self-lock, so that the force of the brake disc can be achieved by the brake disc when the brake is released. The return of the nut.
  • the driving motor 40 may be an outer rotor motor, and the stator 41 of the traveling motor 40 has a cavity 411 extending in the axial direction, and the screw mechanism 60 includes a screw 61 and a set of wires.
  • the brake structure is more compact and takes up less space, facilitating installation on the entire vehicle.
  • the service reduction mechanism 50 may be any appropriate type of speed reduction mechanism as long as the output torque of the service motor 40 can be reduced and torqued and transmitted to the screw 61.
  • the driving speed reduction mechanism 50 may be a first planetary gear speed reduction mechanism including a first sun gear 51, a first planetary gear 52, and a first planet carrier. 53 and the first ring gear 54 , wherein the first sun gear 51 is coupled to the rotor 42 of the service motor 40 , the first planet carrier 53 is coupled to the lead screw 61 , and the first ring gear 54 is fixed to the caliper body 10 .
  • a thrust bearing 70 may be mounted on the lead screw 61, that is, the thrust bearing 70 is sleeved on the lead screw 61.
  • the lead screw 61 is formed with a stepped surface, and the thrust bearing 70 is disposed between the stepped surface and the first planet carrier 53.
  • the disc brake may further include a piston 90 that is slidably fitted to one end of the cavity 411, and the driving speed reduction mechanism 50 is disposed at the other end of the cavity 411 and connected to the screw 61.
  • the first brake block 31 is moved by the piston 90.
  • the piston 90 separates the interior of the cavity 411 from the outside, such that the screw mechanism 60 is in a relatively closed environment, protected from external water, impurities, and prolongs the service life of the brake.
  • the piston 90 can be clearance-fitted with the cavity 411, that is, the diameter of the cavity 411 can be slightly larger than the diameter of the piston 90.
  • the seal ring 100 may be provided between the piston 90 and the inner wall of the cavity 411.
  • the nut 62 may be fixed to the piston 90 by screwing, welding, gluing, or the like. However, in order to avoid stress concentration at the joint, in one embodiment, the nut 62 is not connected to the piston 90.
  • the piston 90 may be in a cylindrical structure in which one end is closed and the other end is open.
  • the nut 62 may be disposed in the piston 90 and is in clearance with the inner wall of the piston 90.
  • the thrust of the nut 62 acts on the closed end of the piston 90 to push The piston 90 moves toward the brake disc 20.
  • the crank slider mechanism 130 includes a crank 131, a link 132 and a push rod 133.
  • One end of the link 132 is hinged to the crank 131, the other end is hinged to one end of the push rod 133, and the other end of the push rod 133 is used for pushing
  • the first brake block 31 presses the brake disk 20.
  • the crank slider mechanism 130 converts the rotational motion of the parking motor 110 into a linear motion output of the push rod 133.
  • the parking motor when the parking brake unit performs the auxiliary ABS function, the parking motor only needs to rotate at a high speed or reverse, so that the push rod can output a high pulse braking force. There is no need for the parking motor to continuously switch between forward and reverse or to lose power, thus extending the service life of the parking motor.
  • the lead screw 61 may be formed as a hollow rod, that is, a shaft hole extending in the axial direction is formed in the screw rod 61, the screw rod 61 passes through the center of the traveling speed reduction mechanism 50, and the push rod 133 is driven from the screw rod 61.
  • the shaft hole 133 passes through, and the push rod 133 also pushes the first brake block 31 through the piston 90.
  • the parking speed reduction mechanism 120 may be any appropriate type of speed reduction mechanism as long as the output torque of the parking motor 110 can be reduced and torqued and transmitted to the parking screw 131.
  • the parking reduction mechanism 120 may be a yaw cone difference planetary reduction mechanism.
  • a yaw-cone difference planetary reducer which is mainly composed of a rotating bevel gear 1, a yoke bevel gear 2, a yaw generator H on the input shaft 5, and a circumferential limiting pair.
  • the yaw generator H is composed of a shaft head 6 with an off-angle ⁇ at the end of the input shaft 5 and a tapered roller bearing 7.
  • the bevel gear 2 is equivalent to an inner bevel gear, and is internally meshed with a bevel gear 1 mounted on the output shaft 9.
  • One end of the yaw bevel gear 2 is mounted on the tapered roller bearing 7 at the yaw shaft head 6, and the other end
  • the spherical bearing 8 is coupled to the shaft end of the output shaft 9 to form a ball joint.
  • the tapered top of the bevel gear coincides with the center O point of the spherical bearing, and a drum-shaped outer ring gear 3 is provided on the outer edge of the yaw bevel gear 2, and the inner ring gear 4 constitutes a circumferential restricting pair.
  • the transmission principle of the yaw cone planetary reducer is: when the input shaft 5 drives the yaw shaft 6 to rotate around the fixed axis nn of the input shaft, the axis OO H of the yaw shaft head forms a cone angle of 2 ⁇ cone beam space. Since the yoke bevel gear 2 mounted on the yaw shaft head 6 is restrained by the circumferential limiting pair and cannot perform the revolving motion, the cone beam motion of the yaw moment head forces the yaw bevel gear 2 to circulate around the O point. The yaw motion forms a state of engagement with the rotating bevel gear 1 mounted on the output shaft 9.
  • the motor shaft 111 of the parking motor 110 is connected to an input shaft 5 of a planetary reducer that can be biased, and the output shaft 9 of the yaw-cone planetary reducer can be coupled to the cam. 131 connected.
  • the parking reduction mechanism 120 may be a second planetary gear reduction mechanism, and the second planetary gear reduction mechanism includes a second sun gear 121, a second planetary gear 122, and a second The carrier 123 and the second ring gear 124, wherein the second sun gear 121 is coupled to the motor shaft 111 of the parking motor 110, the second planet carrier 123 is coupled to the parking screw 131, and the second ring gear 124 is fixed to the brake Inside the caliper body 10.
  • the parking brake unit is further An electromagnetic clutch 80 may be included.
  • the electromagnetic clutch 80 is mounted on the motor shaft 111 of the parking motor 110, and the parking brake state is maintained by the lock of the motor shaft 111 by the electromagnetic clutch 80.
  • the electromagnetic clutch 80 when the electromagnetic clutch 80 is de-energized, the electromagnetic clutch 80 is engaged to lock the motor shaft 111 of the parking motor 110 so that the cam 131 cannot be rotated, so that the push rod 132 is held at the position where the parking brake is realized, and cannot be moved. Further, the push rod 132 is held by the thrust of the first brake block 31 to maintain the parking brake state. When the electromagnetic clutch 80 is energized, the electromagnetic clutch 80 is disengaged to release the motor shaft 111.
  • the electromagnetic clutch 80 may include a clutch housing 81, an electromagnet, a translational friction plate 85, a rotating friction plate 86, an outer race 87, and an inner race 88.
  • the clutch housing 81 is fixed relative to the caliper body 10
  • the electromagnet may include a fixed iron core 82, a movable iron core 83, and a drive spring 84 acting on the movable iron core 83.
  • the inner race 88 is slidably coupled to the motor shaft 111 via a spline, and the rotary lining 86 is disposed on the inner race 88 to be rotatable by the motor shaft 41.
  • the outer race 87 is slidably coupled to the inner wall of the clutch housing 81 by a spline, and the translational friction plate 85 is disposed on the outer race 87 to be able to translate in the axial direction of the motor shaft 111.
  • the fixed iron core 82 and the movable iron core 83 may be formed in an annular structure, and the movable iron core 83 is sleeved on the outside of the motor shaft 111, and the fixed iron core 82 is sleeved on the outside of the movable iron core 83 to make the structure of the brake more Compact and smaller in axial dimensions.
  • the parking motor 110 When the parking brake function needs to be executed during the driving process, the parking motor 110 is powered, and the push rod 132 is driven to move by the parking speed reduction mechanism 120 and the cam 131 in turn, and the push rod 132 pushes the brake block to clamp the brake disk 20,
  • the parking motor 110 loses power, and the electromagnetic clutch 80 works.
  • the parking brake force is maintained by the motor shaft 111 of the parking motor 110, and the parking brake function is executed.
  • the electromagnetic clutch 80 loses the locking force and releases the motor shaft 111.
  • the electromagnetic clutch 80 can be integrated inside the parking motor 110.
  • the parking motor 110, the electromagnetic clutch 80, the parking reduction mechanism 120, and the crank linkage 130 may be disposed within the same housing 140, which may be tightly coupled to the caliper body 10, for example.
  • the firmware is secured together and can be used as part of the caliper body 10.
  • the clutch housing 81 can be fixed within the housing 140.
  • the parking motor 110 When the service brake is applied, the parking motor 110 does not operate, and the rotor 42 of the traveling motor 40 drives the screw 61 to rotate by the driving reduction mechanism 50 to move the nut 62 fitted on the driving screw 61 to the right, thereby pushing the brake block.
  • the brake disc 20 is clamped to generate a friction torque that prevents the wheel from rotating, and the service brake is realized.
  • the driving motor 40 does not work, and the parking motor 110 sequentially moves through the parking reduction mechanism 120, the crank slider mechanism 130, and the boosting mechanism to drive the push rod 133, and the push rod 133 pushes the brake block to clamp the brake.
  • the parking motor 110 loses power, and the electromagnetic clutch 80 loses power to lock the motor shaft 111 of the parking motor 110, and maintains the parking brake force to realize the parking brake.
  • the electromagnetic clutch 80 is energized to release the motor shaft 111 of the parking motor 110, and the parking brake force disappears.
  • a vehicle 200 that includes a disc brake as described above.

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

Abstract

L'invention concerne un frein à disque et un véhicule (200). Le frein à disque comprend un étrier de frein (10), un disque de frein (20), une première plaquette de frein (31), un ensemble frein de service et un ensemble frein de stationnement, l'ensemble frein de stationnement comprenant un moteur de stationnement (110) et un mécanisme de bielle-manivelle (130). Le moteur de stationnement (110) entraîne, par l'intermédiaire du mécanisme de bielle-manivelle (130), la première plaquette de frein (31) en déplacement de manière à exercer une pression sur le disque de frein (20).
PCT/CN2018/102948 2017-08-29 2018-08-29 Frein à disque et véhicule Ceased WO2019042316A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710757472.5 2017-08-29
CN201710757472.5A CN109424665B (zh) 2017-08-29 2017-08-29 盘式制动器及车辆

Publications (1)

Publication Number Publication Date
WO2019042316A1 true WO2019042316A1 (fr) 2019-03-07

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PCT/CN2018/102948 Ceased WO2019042316A1 (fr) 2017-08-29 2018-08-29 Frein à disque et véhicule

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CN (1) CN109424665B (fr)
WO (1) WO2019042316A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110340506A (zh) * 2019-07-04 2019-10-18 佛山市昱纶机械有限公司 一种袋装弹簧焊接装置
EP3805059B1 (fr) * 2019-10-07 2022-12-28 ZF CV Systems Global GmbH Frein à disque avec un actionneur électromécanique, en particulier un actionneur électromécanique de frein de stationnement
CN111591121A (zh) * 2020-04-22 2020-08-28 合肥工业大学 一种基于行星齿轮的双电机电动汽车驱动系统
CN111649018B (zh) * 2020-06-04 2022-02-18 南京理工大学 一种集成外转子电机的泵控液压缸
CN118953301A (zh) * 2024-10-17 2024-11-15 浙江德财制动系统有限公司 一种新能源汽车电子驻车机构

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JPH11257382A (ja) * 1998-03-16 1999-09-21 Tokico Ltd 電動ディスクブレーキ
CN201284805Y (zh) * 2008-07-29 2009-08-05 奇瑞汽车股份有限公司 一种电磁制动装置
CN102518718A (zh) * 2011-12-09 2012-06-27 浙江大学台州研究院 汽车电子机械制动器
JP2014109315A (ja) * 2012-11-30 2014-06-12 Advics Co Ltd 車両の電動制動装置
CN105715707A (zh) * 2016-04-05 2016-06-29 郧县金龙工贸有限公司 电动推杆式汽车盘式制动器控制装置

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NL1013489C2 (nl) * 1999-11-04 2001-05-07 Skf Eng & Res Centre Bv Actuator met een hulsvormige steun.
DE10306430A1 (de) * 2002-04-26 2003-11-27 Continental Teves Ag & Co Ohg Betätigungseinheit für eine elektromechanisch betätigbare Scheibenbremse
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Publication number Priority date Publication date Assignee Title
JPH11257382A (ja) * 1998-03-16 1999-09-21 Tokico Ltd 電動ディスクブレーキ
CN201284805Y (zh) * 2008-07-29 2009-08-05 奇瑞汽车股份有限公司 一种电磁制动装置
CN102518718A (zh) * 2011-12-09 2012-06-27 浙江大学台州研究院 汽车电子机械制动器
JP2014109315A (ja) * 2012-11-30 2014-06-12 Advics Co Ltd 車両の電動制動装置
CN105715707A (zh) * 2016-04-05 2016-06-29 郧县金龙工贸有限公司 电动推杆式汽车盘式制动器控制装置

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