WO2018065863A1 - Ensemble frein à tambour - Google Patents

Ensemble frein à tambour Download PDF

Info

Publication number
WO2018065863A1
WO2018065863A1 PCT/IB2017/055994 IB2017055994W WO2018065863A1 WO 2018065863 A1 WO2018065863 A1 WO 2018065863A1 IB 2017055994 W IB2017055994 W IB 2017055994W WO 2018065863 A1 WO2018065863 A1 WO 2018065863A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
drum
groove
brake assembly
trailing face
Prior art date
Application number
PCT/IB2017/055994
Other languages
English (en)
Inventor
Shanmugam MOHAN
Rengarajan Babu
Original Assignee
Tvs Motor Company Limited
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 Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Publication of WO2018065863A1 publication Critical patent/WO2018065863A1/fr

Links

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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
    • 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
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples

Definitions

  • the present subject matter relates to braking system for vehicles and more particularly to a self-cleaning drum brake system.
  • drum brake systems are being used for a long time because of its reliability and its cost-effectiveness.
  • drum brake systems there is shift from drum brake systems to disc brake system as the engine capacity and vehicle speeds are increasing, as there is a need for effective braking.
  • drum brake systems are used in vehicles with low speed applications.
  • drum brake system is used in two-wheeled and three-wheeled vehicles, which run at low speeds.
  • the drum brake system comprises a brake drum and at least one brake shoe provided with frictional liner that engages with an inner surface of the brake drum.
  • Either mechanical or hydraulic mechanism is used for actuating the brake for making the liner of the brake shoe to come in contact with the brake drum.
  • the liners of the brake shoe come in contact with the drum and the frictional contact between the brake shoe and the inner wall of brake drum reduces the rotational speed of the wheel.
  • FIG. 1 illustrates a left side view of an exemplary two-wheeled motor vehicle, in accordance with an embodiment of the present subject matter.
  • FIG. 2 (a) depicts a brake drum assembly, in accordance with the embodiment depicted in Fig. 1.
  • Fig. 2 (b) depicts an enlarged view of a brake drum, in accordance with another embodiment of the present subject matter.
  • FIG. 2 (c) depicts another enlarged view of the brake drum, in accordance with the embodiment depicted tin Fig. 2 (b).
  • FIG. 3 depicts an enlarged view of another brake drum and a cross sectional view of a brake drum, in accordance with another embodiment of the present subject matter.
  • a brake system is used either to slow down or to stop the moving vehicle.
  • a drum brake system is employed so as to be used as at least one of the braking systems.
  • the drum brake system is installed on either a front wheel or a rear wheel or on all the wheels of the vehicle.
  • a rear wheel is installed with a drum brake system and the users are habituated to actuate the rear wheel brake. This makes the rear brake an essential active safety feature of the vehicle, which is the drum brake system.
  • the drum brake includes a brake drum having inner wall that surrounds the brake shoes.
  • the inner wall is the inner circumferential wall of the brake drum.
  • the liners of the brake shoes come in contact with the inner wall of the brake drum. Frictional forces acting between the brake shoes and the brake drum surface will slow down the rotation of the wheel and eventually bring the wheel to a stop.
  • the brake shoes are provided with the frictional material that provides balance of friction characteristics and brake noise control.
  • the brake noise control is influenced by a formation of debris in the brake drum system.
  • mud entry into the drum brake system forms a thin layer on either brake shoe or on the inner surface brake drum.
  • wear out of the liners of the brake shoe or of the drum liner or both forms a thin layer on the brake liners.
  • water may also enter into the brake drum system that mixes up with debris formed due to wear out, thereby forming a layer on the brake liners.
  • the brake drum system comprises of a brake drum that is provided with plurality of grooves on the inner circumferential surface of the brake drum. Further, each of the plurality of grooves includes two faces, wherein at least one face of the two faces is having a tapered cross section forming a wedge shaped profile thereby forming a dovetail, a parallelogram, or a trapezoidal shaped groove. Further, the at least one face of the two faces of the groove is a trailing face with respect to direction of rotation of the wheel. The trailing face is disposed at an acute angle with respect to a radial line, wherein the radial line is passing through an inner edge of the trailing face. In other words, the trailing face is having a tapered cross-section forming the dovetail, the parallelogram, or the trapezoidal shaped groove. In one embodiment, any known regular or irregular geometric shaped groove with aforementioned trailing face profile section is provided.
  • the grooves are provided along lateral direction of the brake drum and are obliquely disposed in a helical direction. This enables gradual engagement of the trailing edge of the groove over the brake liner surface so that any chip-off or damage of brake liner surface or of friction material is minimized.
  • the trailing face is at an acute angle with respect to a radial line passing through an inner edge (radially inner edge) of the trailing face.
  • the trailing face is extending obliquely and radially outward from the inner edge in a direction opposite to the direction of rotation) of the brake drum.
  • the trailing face is extending in a direction, which is diagonal to both radially outward direction and a direction opposite to tangential direction of rotation.
  • the plurality of grooves are disposed at a helix angle, extending in a lateral direction of the brake drum to enable at least a portion of an wedge shaped profile of the groove to be in contact with the brake shoe. It is a feature of the present subject matter that the friction torque variations caused due to improper engagement of grooves with the frictional liners is reduced due to at least a portion of the wedge shaped profile of the groove being in contact with the brake shoe.
  • the grooves are disposed at a helix angle to further improve the contact area.
  • the trailing face of the groove which is provided with a dovetail or a parallelogram or a trapezoidal cross section, forms a wedge shaped profile.
  • the wedge comes in contact with the brake shoe liner during actuation of the brake. This enables optimum removal of brake liner from the brake shoe liner surface, to self-clean debris formed on the brake shoe liner of the brake drum system by shaving.
  • the wedge shaped profile is optimally provided to avoid any excessive shaving of frictional liner.
  • the plurality of grooves enable reduction of noise, at the same time provides the advantage of improved braking.
  • the friction torque variations are also reduced. It is an additional feature of the present subject matter that the brake drum system is capable of self-cleaning of debris or dirt.
  • groove cross section is adaptable depending on the type of vehicle or the terrain where the vehicle is operated, providing flexibility to deploy on different types two-wheeled and threeD wheeled vehicles.
  • Fig. 1 illustrates a left side view of a two-wheeled vehicle, in accordance with an embodiment of the present subject matter.
  • the vehicle 100 comprises a frame assembly 105 extending from a front portion towards a rear portion of the vehicle 100.
  • a power unit 110 is mounted on the frame assembly 105 of the vehicle 100.
  • the power unit 110 includes at least one of an internal combustion (IC) engine or a traction motor.
  • the power unit 110 is a four-stroke single cylinder type IC engine.
  • the power unit 110 includes a starter system.
  • the starter system includes an electric start system or a mechanical kick-start system or both that are employed with power unit 110 provided with the IC engine.
  • a rear wheel 120 is functionally coupled to the power unit 110.
  • the transmission system 115 may include a fixed gear chain drive or continuously variable transmission (CVT) or an automatic manual transmission (AMT) or a multi-speed manual control gearbox system.
  • a rear fender 125 covers at least a portion of the rear wheel 120.
  • one or more rear suspension spring and damper system(s) 130 functionally connect the rear wheel 120 to the frame assembly 105.
  • a head tube of the frame assembly 105 is rotatably supported by a steering shaft (not shown).
  • a handle bar assembly 135 is connected to the steering shaft.
  • One or more front suspension spring and damper system(s) 140 rotatably support a front wheel 145 and connect the front wheel 145 to the steering shaft.
  • a front fender 150 covers at least a portion of the front wheel 145.
  • a seat assembly 155 is supported by a portion of the frame assembly 105.
  • the fuel tank 160 is disposed in anterior portion of the seat assembly 155 and upwardly of the power unit 110.
  • the vehicle 100 comprises a front drum brake assembly 200 disposed at the front wheel 145 and an actuating lever 170 is provided on the handle bar assembly 135.
  • the rear wheel 120 is provided with another drum brake assembly (not shown) that is actuated by a hand-operated lever or a leg operated lever.
  • the vehicle 100 includes a transmission cover 165 covering at least a portion of the transmission 115.
  • Plurality of panels 175A and 175B are disposed longitudinally and downwardly from the seat assembly 155.
  • the internal combustion engine of the power unit 110 will be supplied with air fuel mixture supplied by a fuel tank (not shown) and an air induction system (not shown) that are coupled through a carburetor or a fuel injection system (not shown).
  • the vehicle 100 comprises an auxiliary power source (not shown) that includes a battery or a hydrogen cell or a fuel cell or the like. Further, the traction motor of the power unit 110 is powered by the auxiliary power source mounted on the vehicle 100.
  • the vehicle 100 includes various electronic, electrical, and mechanical systems such as a vehicle control unit, an anti-lock braking system, or a synchronous braking system. Also, an electrical starter system, a headlamp 180, and a tail lamp 185 are provided on the vehicle.
  • Fig. 2 (a) illustrates a perspective view of the drum brake assembly 200.
  • the drum brake assembly 200 comprises of anchor plate member 205 that supports plurality of brake shoes 210A, 210B.
  • the brake shoes 210A, 210B are arc shaped and each of the shoes 21 OA, 210B are provided with a frictional liner 210AA, 210BA.
  • One end of the brake shoes 210 are mounted on a pin 215 that is rigidly connected to the anchor member 205.
  • a cam member 220 is rotatably supported by the anchor plate member 205 and rigidly connected to a lever 225 in order to provide angular movement therebetween.
  • a brake drum 300 is en-casted or affixed to a hub portion (not shown) of the wheel 145 to secure angular movement between them. Therefore, the anchor plate member 205 is a stationary part, while the brake drum 300 rotates along with the wheel.
  • the brake drum 300 comprises a circumferential wall 305 that is capable of enclosing the plurality shoes 21 OA, 210B in circumferential direction. Further, the inner circumferential wall 305 of the brake drum 300 is provided with plurality of grooves 310 extending in a lateral direction that are disposed in helical direction, wherein the grooves are extending from one lateral end to other lateral end of the brake drum 300. Each groove of the plurality of grooves 310 comprises a trailing face 310T (shown in Fig. 2 (c)), which is with respect to direction of rotation of the wheel, having a wedge shaped profile P. The plurality of grooves 310 are provided with a cross section including a trapezoidal, a parallelogram, or a dovetail shape, wherein the trailing face 310T is having the wedge shaped profile P.
  • the brake shoes 21 OA, 210B are connected to each other through plurality of springs 226 that enable restoration to normal state.
  • springs 226 In normal state of the brake shoes 21 OA, 210B, free ends of the arc shaped shoes 210 are in contact with a flat surface of the cam member 220.
  • the springs 226 hold the brake shoes 210A, 210B in the normal state. Actuation of brake will enable rotation of the lever 225 that will rotate the cam member 220, which will push the brake shoes 21 OA, 210B apart from each other thereby moving the brake shoes 21 OA, 210B towards the inner circumferential surface 305 of the brake drum 300.
  • the frictional liners 210AA, 210BA provided on the brake shoes 210A, 210B come in contact with the inner circumferential surface 305 of the brake drum 300. This creates a friction between the frictional liners 210AA, 210BA and brake drum 300, resulting in reducing the speed of the rotation of the wheel.
  • the springs 226 will retract the brake shoes 21 OA, 210B to the normal condition.
  • Fig. 2 (b) depicts an enlarged view of a brake drum 300, in accordance with the embodiment of the present subject matter depicted in Fig. 2
  • one end of a first groove 310 over laps with at least a portion of an opposite end of a second groove 320 that is adjacent to the first groove 310, when viewed from sideward.
  • the helix angle ⁇ (shown in Fig. 2 (b)) of the grooves 310 enables achieving of aforementioned aspect, which is overlapping of the first groove 310 with the second groove 320 (shown in Fig. 2
  • the provision of one end of the first groove 310 over lapping with at least a portion of the opposite end of the second groove 320 enables at least a portion of the grooves 310, 320 to be in contact with the frictional liners-simultaneously.
  • the brake drum 300 is en-casted with a wheel and disposed at the wheel hub.
  • the present embodiment comprises of plurality of grooves, which are collectively referred as D310D, that extend from one end of the brake drum 300 to other end on the inner circumferential surface of the brake drum 300. Further, the grooves 310 are obliquely disposed. Actuation of brake will enable the frictional liner 210AA, 210BA provided on the brake shoes 210A, 210B (as shown in Fig. 2 (a)) to come in contact with the inner circumferential surface 305 of the brake drum.
  • the plurality of grooves 310 provided on the brake drum 300 will enable shaving of the debris on the brake liner 210AA, 210BA (as shown in Fig. 2 (a)) of the brake shoes 210A, and 210B. This will enable self-cleaning of the debris or dirt or both that is accumulated over the frictional liners 210AA, [00041]
  • the plurality of grooves 310 is disposed at a helix angle ⁇ .
  • a tangent B-BD of the groove 310 makes a helix angle ⁇ with respect to an axis A- AD that is parallel to the wheel axis.
  • the helix angle ⁇ and length of the groove define the number of grooves provided on the brake drum 300.
  • the number of grooves provided will be equivalent to six for a brake drum having 30 millimeters of width. Therefore, the helix angle ⁇ depends upon the number of grooves, drum diameter and drum width, and equals to an inverse of the ratio of angular advancement of the groove (angular pitch) and axial advancement of the groove (brake drum width). In other words, the number of grooves is equal to 360 degrees divided by angular pitch of the grooves.
  • Fig. 2 (c) depicts another enlarged view of the brake drum 300, in accordance with the embodiment depicted in Fig. 2 (b).
  • each of the plurality of grooves 310 comprises of at least two faces 310L, 310T extending in a lateral direction of the vehicle 100, wherein the groove(s) 310 are disposed at a helix angle.
  • the groove depicted in Fig. 2 (c) comprises of a leading face 310L and a trailing face 310T.
  • the leading face 310L and the trailing face 310T are with respect to a direction of rotation DR of the brake drum 300 that is due to the rotational motion of wheel caused due to the movement of vehicle 100.
  • At least the trailing face 310T of the two faces 310L, 310T is having a tapered profile P.
  • the trailing face 310T is disposed at an angle, which forms a wedge shaped profile P.
  • the groove 310 is having a parallelogram cross-section as shown in Fig. 2 (c).
  • the groove 310 has a dovetail cross-section as shown in Fig. 3.
  • the trailing face 310T is inclined at an acute angle with respect to radial line of the brake drum 300 passing through inner edge of the trailing face 310T, wherein the inner edge is in proximity to the center of the brake drum 300.
  • the trailing face 310T acts as a wedge that will enable effective removal of the dirt or debris from the frictional liners 210AA, 210BA of the brake shoes 210A, 210B. Further, the angle of inclination of trailing face 310T is in the range of 0-30 degree for optimal functioning of the brake drum assembly.
  • Fig. 3 depicts an enlarged view of the brake drum and a cross-sectional view of a groove taken for a brake drum at axis X-XD, in accordance with another embodiment of the present subject matter.
  • the depicted groove is having a dovetail cross-section.
  • a leading face 410L and a trailing face 410T of the groove 410 are provided with tapered profile, wherein the trailing face 410T is inclined at an acute angle a.
  • the leading face 410L is inclined at an acute angle ⁇ with respect to the radial line R-RD passing through an inner edge ED of the leading face 410L.
  • the trailing face 410T is extending obliquely and radially outward from the inner edge E in a direction that is opposite to the direction of rotation DR of the brake drum 400.
  • the obliquely extending trailing face 410T forms the wedge shaped profile P that engage with the frictional liners during actuation of the brake thereby enabling in self-cleaning of the friction liners of brake shoes.
  • a further effect of the self-cleaning is, minimizing the brake noise problem.
  • a first axis T-TD passing along the trailing face 410T is disposed at an acute angle a with respect to the radial line R-RD passing through the inner edge E of the trailing face 410T.
  • a second axis L-LD passing along the leading face 410L is disposed at an acute angle ⁇ with respect to the radial line R-RD passing through an inner edge ED of the leading face 410L.
  • the groove 410 is having a dovetail cross-section.
  • the trailing face 410T is extending obliquely, which is at an acute angle a with the radial line R-RD , and a radially outward in a direction opposite to the direction of rotation DR of the wheel.
  • the wedge shaped cross-section is provided on both the leading face 410L and the trailing face 410T. This enables self-cleaning of frictional liners when the wheel is rotating in forward direction and also in the reverse direction.
  • the acute angle(s) ⁇ , ⁇ are preferably in the range of 0-30 degrees to enable optimal removal of debris and also to minimize chip-off and damage of the frictional liners.
  • the trailing face 410T and the leading face 410L are depicted in accordance to the direction of rotation DR of the wheel 145.
  • the trailing face 410T and the leading face 410L would interchange when the direction of rotation of the wheel 145 or 120 or both changes.
  • the self-cleaning of the frictional liners 210AA, 210BA occurs during rotation of the wheel 145 in either of the directions.
  • the groove 410 is provided with the leading edge ED and the trailing edge E that are obliquely disposed.
  • the leading edge ED and the trailing edge E of the grooves are obliquely disposed to each other.
  • gap between the leading edge 410L and trailing edge 410T of the grooves is kept either constant or is variable depending on the application.

Landscapes

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

Abstract

La présente invention concerne un ensemble frein à tambour comportant un tambour de frein (400) pourvu d'une ou de plusieurs rainures (410) disposées sur la surface circonférentielle intérieure du tambour de frein (400). La ou les rainures (410) comportent une face avant (410L) et une face arrière (410T) par rapport à une direction de rotation (DR) du tambour de frein (400). La face arrière (410T) est placée à un angle aigu (a) par rapport à une ligne radiale (R-RD) passant par un bord intérieur (E) de la face arrière (410T), et la face arrière (410T) s'étend obliquement vers l'extérieur à partir du bord intérieur (E).
PCT/IB2017/055994 2016-10-04 2017-09-29 Ensemble frein à tambour WO2018065863A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201641033881 2016-10-04
IN201641033881 2016-10-04

Publications (1)

Publication Number Publication Date
WO2018065863A1 true WO2018065863A1 (fr) 2018-04-12

Family

ID=61831324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/055994 WO2018065863A1 (fr) 2016-10-04 2017-09-29 Ensemble frein à tambour

Country Status (1)

Country Link
WO (1) WO2018065863A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112762110A (zh) * 2021-02-02 2021-05-07 北京理工大学 一种径向钳齿式制动器
CN113217566A (zh) * 2021-06-07 2021-08-06 河北百龙汽车配件股份有限公司 带条状加强筋的汽车制动鼓

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851132A (en) * 1955-02-16 1958-09-09 Thomas W James Friction element
US2978073A (en) * 1957-04-01 1961-04-04 Chicago Railway Equipment Co Bimetal brake drum
US7325659B2 (en) * 2005-04-07 2008-02-05 Raymond Pfaff Drum brake

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851132A (en) * 1955-02-16 1958-09-09 Thomas W James Friction element
US2978073A (en) * 1957-04-01 1961-04-04 Chicago Railway Equipment Co Bimetal brake drum
US7325659B2 (en) * 2005-04-07 2008-02-05 Raymond Pfaff Drum brake

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112762110A (zh) * 2021-02-02 2021-05-07 北京理工大学 一种径向钳齿式制动器
CN113217566A (zh) * 2021-06-07 2021-08-06 河北百龙汽车配件股份有限公司 带条状加强筋的汽车制动鼓
CN113217566B (zh) * 2021-06-07 2022-05-31 河北百龙汽车配件股份有限公司 带条状加强筋的汽车制动鼓

Similar Documents

Publication Publication Date Title
CN1217807C (zh) 自行车轮毂
RU2600143C2 (ru) Фрикционная накладка, тормозная колодка и узел барабанного тормоза
EP0198297B1 (fr) Dispositif de propulsion directe des roues
US8425355B2 (en) Belt-type continuous stepless speed changer
WO2018065863A1 (fr) Ensemble frein à tambour
EP1929180B1 (fr) Ensemble poulie de transmission variable continue
CN102717705A (zh) 机械智能化自适应两档多凸轮自动变速轮毂
WO2000006897A2 (fr) Embrayage a friction portant le rotor d'une machine electrique, notamment pour vehicule automobile
EP3948004B1 (fr) Systeme de freinage avec soufflage dans rainure de la garniture
CN100591912C (zh) 发动机起动装置
CN101535100A (zh) 一种机动车辆刹车系统
CN1043673A (zh) 自行车自动变速装置
FR2782355A1 (fr) Embrayage a friction portant le rotor d'une machine electrique, notamment pour vehicule automobile
WO2019228892A1 (fr) Porte-disque assemble et mecanisme d'embrayage humide comprenant ce porte-disque assemble
US20050139436A1 (en) Self-boosting electromechanical vehicle brake
US20110182660A1 (en) Shaft/Hub Connection and Manually Guided Implement
US6415894B2 (en) Parking brake
EP0704636B1 (fr) Embrayage à glissement contrôlé, notamment pour véhicule automobile
US7278521B2 (en) Disc rotor of disc brake device for vehicle and disc brake device
CN113715956B (zh) 一种重度混合动力系统及摩托车
CN210978281U (zh) 正传双向驱动反传单向锁止装置
CA2795846C (fr) Dispositif de transmission de couple et de freinage
FI75037C (fi) Automatisk reglervaexel foer fordon.
CN2874122Y (zh) 无级变速复合单向逆止滚柱轴承离合器从动盘
CN118030807A (zh) 定子轴以及变速箱

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17857924

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17857924

Country of ref document: EP

Kind code of ref document: A1