WO2012153502A1 - ディスクブレーキ装置 - Google Patents
ディスクブレーキ装置 Download PDFInfo
- Publication number
- WO2012153502A1 WO2012153502A1 PCT/JP2012/002970 JP2012002970W WO2012153502A1 WO 2012153502 A1 WO2012153502 A1 WO 2012153502A1 JP 2012002970 W JP2012002970 W JP 2012002970W WO 2012153502 A1 WO2012153502 A1 WO 2012153502A1
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- WO
- WIPO (PCT)
- Prior art keywords
- braking
- braking surface
- rotor
- electric motor
- brake device
- Prior art date
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- 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
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- 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
- F16D55/2262—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 the axial movement being guided by open sliding surfaces, e.g. grooves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
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- 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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
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- 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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
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- 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
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- 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
- F16D65/183—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 with force-transmitting members arranged side by side acting on a spot type force-applying member
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- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
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- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
- F16D65/66—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play with screw-thread and nut
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- 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
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- 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
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- 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
- F16D2123/00—Multiple operation forces
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- 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
- F16D2127/08—Self-amplifying or de-amplifying mechanisms
- F16D2127/10—Self-amplifying or de-amplifying mechanisms having wedging elements
Definitions
- the present invention relates to a disc brake device that is used in a vehicle or the like and generates a braking force by friction, and more particularly relates to a disc brake device that uses an electric motor as a drive source for generating a braking force.
- the disc brake device is widely used in vehicles and the like, and is configured to brake the rotation of the rotor by generating a frictional force by pressing a pad against the rotor that rotates with the wheel in response to a depression operation on the brake pedal.
- a motion conversion mechanism for converting the rotational driving force of the electric motor into a pressing force pressing the pad against the rotor is necessary.
- the motion conversion mechanism tends to be large, and there is a problem in that the installation space of other devices arranged around the disc brake device is pressed.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a disc brake device that can generate a compact and sufficient braking force while having a configuration using an electric motor.
- a disc brake device includes a rotor having a disc-shaped braking surface that is connected to a rotating body to be braked and rotates, and is fixed in a rotational direction with respect to the rotor.
- caliper for example, caliper assembly 10 in the embodiment
- friction pads for example, outer pad 41, inner pad 43 in the embodiment
- a braking operation mechanism configured to perform an operation of pressing the friction pad against the braking surface, wherein the braking operation mechanism is a base member (for example, attached to the caliper).
- a sliding member (for example, the wedge plate 37 in the embodiment) to be held, the base member, and the sliding member, the sliding member being parallel to the braking surface with respect to the base member and the rotation direction of the rotor
- a first motion conversion mechanism that moves in a direction perpendicular to the braking surface while sliding, an electric motor unit that is attached to the base member and receives electric power and outputs a rotational driving force, and rotation of the electric motor unit
- a second motion conversion mechanism that slides the slide member in parallel with the braking surface and in the rotational direction of the rotor using a driving force, and the second motion conversion mechanism using the rotational driving force of the electric motor unit.
- the braking operation means for example, the brake pedal 92 in the embodiment operated for braking
- the braking force request value detection means for example, the braking force request value detected by the braking operation of the braking operation means
- Stepping force detection sensor 92a in the embodiment
- braking force detection means for example, sensor 31 in the embodiment
- a motor drive control device that performs control for example, the controller 91 in the embodiment
- the motor drive control device detects the braking force detected by the braking force detection means by the braking force request value detection means.
- the rotational drive control of the electric motor unit is set to a value corresponding to the required braking force value. Preferably it is carried out.
- the above-described disc brake device further includes a rotation direction detection means (for example, a rotation direction detection sensor 93 in the embodiment) that detects the rotation direction of the rotor, and the motor drive control device includes the first friction pad as the first friction pad. It is preferable to perform rotation drive direction control of the electric motor unit so as to be pressed against the braking surface while slidingly moving in the rotation direction of the rotor by a motion conversion mechanism.
- a rotation direction detection means for example, a rotation direction detection sensor 93 in the embodiment
- the first motion conversion mechanism is formed on the surfaces of the base member and the slide member that extend in parallel to the braking surface and face each other and extend in a direction perpendicular to the rotation direction of the rotor and face each other.
- a plurality of pairs of wedge-shaped wedge grooves, a plurality of rollers sandwiched and disposed in a plurality of pairs of wedge grooves facing each other in the base member and the slide member, and an axial direction of the plurality of rollers A roller holding member (for example, the cage 45 in the embodiment) that restricts the movement of the roller and the relative movement between the plurality of rollers, and the roller holding member in a plurality of pairs of the wedge grooves in the base member and the slide member A web that applies a pressing force in the clamping direction with each of the rollers held by the member being clamped.
- Biasing member e.g., a spring 39d in the embodiment
- Biasing member is preferably constructed from a.
- the second motion conversion mechanism is formed on a cam member or an involute pinion tooth member connected to the output rotation shaft of the electric motor unit, and the slide member, and the cam member or pinion tooth member
- the rack teeth are engaged with each other (for example, the rack-side contact surface 37d in the embodiment), and the cam member or the pinion tooth member is rotated by the electric motor unit so that the slide member is interposed via the rack teeth. It is preferable that the sliding movement is configured.
- the base member is configured such that the braking surface against the caliper via an adjustment mechanism (for example, the adjuster main body 32, the adjuster cylindrical body 33, the adjustment drive gear 38 in the embodiment).
- the base member is moved closer to the braking surface by the adjusting mechanism to increase the gap between the braking surface and the friction pad generated in accordance with wear of the friction pad. It is preferable that adjustment is possible by moving in the direction.
- a disc brake device includes a first motion conversion mechanism that moves a slide member in a direction perpendicular to a braking surface while sliding a slide member in a rotation direction of a rotor with respect to a base member, an electric motor unit, and an electric motor unit And a second motion conversion mechanism that slides the slide member in the rotation direction of the rotor using the rotational driving force. Therefore, after the second drive conversion mechanism converts the rotational driving force of the electric motor unit into the slide movement of the slide member, the first movement conversion mechanism further moves the slide movement to press the friction pad against the braking surface. Therefore, the braking force amplified by the second motion conversion mechanism and the first motion conversion mechanism can be applied to the braking surface. Therefore, it is possible to realize a disc brake device that can generate a compact and sufficient braking force while pressing the friction pad against the rotor using the rotational driving force of the electric motor.
- the motor drive control device performs rotation drive control of the electric motor unit so that the detected actual braking force becomes a value corresponding to the required braking force value.
- the intended braking force can be accurately applied by performing rotational drive control of the electric motor unit.
- the motor drive control device controls the rotational drive direction of the electric motor unit so that the friction pad is pressed against the braking surface while slidingly moving in the rotational direction of the rotor by the first motion conversion mechanism. Preferably it is done.
- the friction pad is slid by the frictional force between the rotor and the friction pad, and the pressing force is reduced by this sliding movement. It is automatically amplified. Therefore, by allowing sliding movement of the friction pad by the frictional force, it becomes possible to automatically amplify the pressing force and generate a large braking force.
- the first motion conversion mechanism includes a V-shaped wedge groove formed in the base member and the slide member, a roller sandwiched in the wedge groove, and a roller in the wedge groove.
- the wedge biasing member is preferably configured to apply a pressing force in the clamping direction. In the case of this configuration, it is possible to automatically amplify the pressing force with a simple configuration in which the roller is simply fitted into the wedge groove and clamped.
- the second motion conversion mechanism includes a cam member or pinion tooth member provided on the output rotation shaft of the electric motor unit, and a rack tooth formed on the slide member and meshing with the cam member or pinion tooth member. It is preferable that it is comprised from these. In this configuration, by making the cam member or pinion tooth member into an involute shape, slip between the rack teeth can be reduced, and the rotation output of the electric motor unit can be efficiently moved (with less transmission loss) to slide the slide member. It becomes possible to convert.
- the base member is attached so as to be movable in a direction orthogonal to the braking surface via an adjusting mechanism.
- the adjustment can be made to narrow the gap by using the adjusting mechanism. It is possible to maintain a gap with a constant interval.
- FIG. 1 is a perspective view of a disc brake device to which the present invention is applied.
- FIG. 2 is a cross-sectional view taken along a line II-II in FIG. It is the perspective view which showed the pad and the wedge plate part (a cage and the biasing unit are abbreviate
- FIG. 1 A perspective view of a disc brake device 1 as an example to which the present invention is applied is shown in FIG. 1.
- the overall configuration of the disc brake device 1 will be described with reference to FIGS.
- the left and right outer sides of the vehicle will be referred to as the outer side
- the left and right inner sides of the vehicle will be referred to as the inner side.
- the disc brake device 1 houses the inner unit 20 in the inner space 11a on the inner side, and houses the inner pad 43 and the outer pad 41 in the opening 12a on the outer side.
- the constructed caliper assembly 10 is arranged so as to sandwich the end portion of the rotor 4 formed in a disk shape from both sides.
- the caliper assembly 10 is attached to a carrier 6 so as to be slidable in the axial direction of the rotor 4 by a plurality of slide pins 9, and this carrier 6 is attached to a support plate 5 fixed to the axle 2 and fixed. Yes.
- the inner unit 20 includes an electric motor unit 24, two adjustment units 30 provided on both sides of the electric motor unit 24, a base plate 35 provided on the outer side of the electric motor unit 24, and a base plate 35.
- the wedge plate 37, the cylindrical roller 36 sandwiched between the base plate 35 and the wedge plate 37, the cage 45 holding the roller 36, and the wedge plate 37 are urged toward the base plate 35. It comprises an urging unit 39 (see FIGS. 4 to 6).
- the electric motor unit 24 is supplied with electric power to output a rotational driving force, an electric motor 25, a cam member 27 attached to an output shaft of the electric motor 25, and a rotation angle sensor for detecting the rotation angle of the electric motor 25. 28.
- the cam member 27 is formed with a main body portion 27a attached to the output shaft of the electric motor 25, and connected to the main body portion 27a, and on both side surfaces, for example, involute cam-side contact surfaces. And an engagement tooth 27c formed with 27b.
- the electric motor unit 24 is attached to the base plate 35 such that the drive shaft of the electric motor 25 is oriented perpendicular to the braking surface 4a.
- the adjustment unit 30 includes a sensor 31, an adjuster body 32, an adjuster cylindrical body 33, and an adjustment drive gear 38. As shown in FIG. 7, the sensor 31 can detect a pressing force when the inner pad 43 is pressed against the braking surface 4a.
- the adjuster cylindrical body 33 is formed in a cylindrical portion 33a in which a cylindrical cylindrical screw (not shown) is formed on an inner peripheral surface and an inner side end portion of the cylindrical portion 33a. And an adjustment driven gear 33b.
- a spiral body-side screw (not shown) that meshes with a cylinder-side screw formed on the cylinder portion 33a is formed on the outer peripheral surface of the adjuster body 32, and the cylinder-side screw and the body-side screw mesh with each other.
- the adjuster cylindrical body 33 is attached to the adjuster main body 32.
- the adjustment drive gear 38 meshes with the adjustment driven gear 33 b of both the adjustment units 30.
- the adjustment unit 30 configured as described above adjusts the gap between the braking surface 4a of the rotor 4 and the inner pad 43 so as to be a predetermined interval each time a brake operation is performed.
- the base plate 35 is formed with two wedge grooves 35 a having a V-shaped cross-sectional view for fitting and holding the roller 36 on the surface facing the wedge plate 37.
- the wedge plate 37 is formed in a substantially flat plate shape, and a roller 36 is fitted into a surface facing the base plate 35 at a position corresponding to the wedge groove 35 a of the base plate 35.
- Two wedge grooves 37a having a V-shaped cross-sectional view for holding in are formed.
- an insertion space 37b through which the cam member 27 is inserted is formed in the central portion of the wedge plate 37 in a direction perpendicular to the braking surface 4a.
- An escape portion 37c for preventing interference with the main body portion 27a when the wedge plate 37 is slid to the side is formed in a portion located on the side of the main body portion 27a in the upper portion of the insertion space 37b.
- a rack-side contact surface 37d that contacts the cam-side contact surface 27b of the cam member 27 is formed in the lower portion of the insertion space 37b.
- the cage 45 has a pair of roller holding portions 45b for accommodating and holding the roller 36 with respect to a base portion 45a formed in a substantially flat plate shape, and a positioning opening at the center portion. 45c is formed.
- the roller holding portion 45b By being accommodated in the roller holding portion 45b, the roller 36 is rotatably supported in a state where movement in the vertical direction, the rotation direction of the rotor 4 and the direction orthogonal to the braking surface 4a is restricted.
- the positioning opening 45c is formed so as to correspond to a base member 39a, which will be described later, and the base member 39a is fitted into the positioning opening 45c and is slid back and forth in a guided state. It has become.
- the urging unit 39 includes a base member 39a attached to the wedge plate 37, a support shaft 39c attached to the base member 39a, a spring 39d, and a spring retainer 39e. Composed.
- the base member 39a is formed with a pair of screw insertion holes 39b. By fastening a fastening screw (not shown) inserted into the screw insertion hole 39b into the screw hole 37e of the wedge plate 37, the base member 39a Is attached to the wedge plate 37.
- the spring 39d is fixed by a spring retainer 39e in a state of being inserted into the support shaft 39c and contracted, and a biasing force toward the inner side by the spring 39d is always applied to the wedge plate 37.
- the roller 36 is held by the urging unit 39 while being sandwiched between the wedge plate 37 (wedge groove 37a) and the base plate 35 (wedge groove 35a) urged toward the inner side.
- a shoe plate 42 is fixed to the outer side of the outer pad 41 (also referred to as a friction material), and a shoe plate 44 is fixed to the inner side of the inner pad 43 (also referred to as a friction material). Yes.
- the shoe plate 42 to the outer pad 41 the shoe plate 44 to the inner pad 43
- the outer pad 41 and the inner pad 43 generate a frictional force corresponding to the pressing force by being pressed against the braking surface 4a, and apply a braking force that prevents the rotation of the rotor 4 to the rotor 4 (braking surface 4a).
- the outer pad 41 is integrated with the shoe plate 42 and is inserted between the bridge portion 12 c formed on the outer portion of the caliper assembly 10 and the rotor 4.
- the inner pad 43 is integrated with the shoe plate 44 and is inserted between the wedge plate 37 and the rotor 4.
- the vehicle is provided with a controller 91 that controls the operation of the electric motor 25, and the inner pad 43 is pressed against the braking surface 4 a detected by the sensor 31. And the rotation angle of the electric motor 25 detected by the rotation angle sensor 28 are input. Further, the vehicle is provided with a brake pedal 92 for the driver to perform a brake operation.
- the brake pedal 92 detects a stepping force (brake operating force) applied to the brake pedal 92 by converting it into a signal.
- a stepping force detection sensor 92a is provided.
- the electrical signal detected by the stepping force detection sensor 92a is output to the controller 91.
- the brake operation force detected by the stepping force detection sensor 92a and the pressing force of the inner pad 43 corresponding to the brake operation force are stored in association with each other in advance.
- the vehicle is provided with a rotation direction detection sensor 93 for detecting the rotation direction of the rotor 4 (forward direction f or reverse direction r).
- the detection result obtained by the rotation direction detection sensor 93 is a controller 91. Is output.
- the gap between the outer pad 41 and the inner pad 43 and the braking surface 4a is the amount of the wear. growing.
- the time lag from when the brake pedal 92 is depressed until the outer pad 41 and the inner pad 43 are actually pressed against the braking surface 4a increases, and the response of the brake operation decreases. Therefore, when the gap becomes large due to wear of the outer pad 41 and the inner pad 43, the adjustment drive gear 38 is automatically rotated and the gap between the outer pad 41 and the inner pad 43 and the braking surface 4a is set to a predetermined value. Adjustment is performed so that the distance becomes narrower, and the response of the brake operation can be secured.
- step S110 shown in FIG. 9 the rotation direction (forward direction f or reverse direction r) of the rotor 4 detected by the rotation direction detection sensor 93 is input to the controller 91.
- step S120 the process proceeds to step S120, and a signal indicating the brake operation force with respect to the brake pedal 92 detected by the stepping force detection sensor 92a is input to the controller 91.
- step S ⁇ b> 130 the process proceeds to step S ⁇ b> 130, and a signal indicating the pressing force of the inner pad 43 against the braking surface 4 a detected by the sensor 31 is input to the controller 91.
- step S140 the controller 91 determines whether or not the rotation direction of the rotor 4 input in step S110 is the forward direction f. If the result of determination is that the rotation direction of the rotor 4 is the forward direction f, Then, a drive signal is output to the electric motor 25 so as to slide the wedge plate 37 in the forward direction f (step S151).
- the cam side contact surface 27b formed in an involute shape is brought into contact with the rack side contact surface 37d so as to slide the wedge plate 37.
- slip generated between the cam-side contact surface 27b and the rack-side contact surface 37d can be suppressed, and the rotational driving force of the cam member 27 can be efficiently converted into the wedge plate 37 slide movement.
- FIG. 7 shows a state in which the wedge plate 37 is slid in the forward direction f and the shoe plate 44 and the inner pad 43 are integrally slid in the forward direction f as indicated by a two-dot chain line.
- a wedge plate 37f, a shoe plate 44f, and an inner pad 43f are shown.
- FIG. 8 shows an enlarged view of the wedge plate 37f, the shoe plate 44f, and the inner pad 43f slid in the forward direction f.
- the roller 36 is pressed against the inclined surface on the reverse direction side in the V-shaped wedge groove 37 a, and against the roller 36.
- the wedge plate 37 (the shoe plate 44 and the inner pad 43 integrated with the wedge plate 37) is relatively pushed toward the outer side (braking surface 4a side) along the slope of the slope.
- step S140 if it is determined in step S140 that the rotation direction of the rotor 4 is the reverse direction r, a drive signal is sent from the controller 91 to the electric motor 25 so as to slide the wedge plate 37 in the reverse direction r. This is output (step S152).
- step S152 the cam side contact surface 27b of the cam member 27 presses the rack side contact surface 37d of the wedge plate 37, and the wedge plate 37 slides in the rotational direction of the cam member 27 (in this case, the reverse direction r).
- FIG. 7 shows the positions of the wedge plate 37, the shoe plate 44, and the inner pad 43 when the wedge plate 37 is slid in the reverse direction r in this way, with the wedge plate 37r, the shoe plate 44r, An inner pad 43r is shown.
- the caliper assembly 10 When the caliper assembly 10 is pressed to the inner side, the caliper assembly 10 is slid to the inner side with respect to the carrier 6 by the slide pin 9. Then, the shoe plate 42 and the outer pad 41 are integrally pressed to the inner side by the bridge portion 12c formed on the outer side, and the outer pad 41 is pressed against the braking surface 4a. In this way, each of the outer pad 41 and the inner pad 43 is pressed against the braking surface 4a to sandwich the rotor 4 so that a braking force that prevents the rotation of the rotor 4 can be applied. .
- the disc brake device 1 is configured such that the pressing force pressing the inner pad 43 against the braking surface 4a is automatically amplified (generates self-boosting) by the base plate 35 and the roller 36 wedge plate 37.
- This configuration will be described with reference to FIG. In the following description, the friction coefficient between the braking surface 4a and the inner pad 43 is assumed to be ⁇ .
- the inner pad 43 is pressed against the braking surface 4a by the pressing force obtained by adding the reaction force F ′ to the original pressing force F, and the friction force (F + F ′) corresponding to the total pressing force (F + F ′).
- X ⁇ acts on the inner pad 43.
- the base plate 35, the roller 36, and the wedge plate 37 are used so that the self-boosting force is applied (wedge mechanism), so that even when the relatively small electric motor 25 is used, the structure is sufficient.
- the outer pad 41 and the inner pad 43 can be pressed against the braking surface 4 a with a large pressing force, and a sufficient braking force can be applied to the rotor 4.
- the disc brake device 1 can be configured using a relatively small electric motor 25, the disc brake device 1 can be configured compactly, and the arrangement space for other components arranged around the wheel. Can be secured sufficiently.
- the electric motor 25 is rotationally driven so that the wedge plate 37 is slid in the rotational direction of the rotor 4 in step S151 or step S152. .
- step S160 when the braking force is applied to the rotor 4 in this way, the controller 91 detects that the pressing force of the inner pad 43 detected by the sensor 31 is detected by the stepping force detection sensor 92a. It is determined whether or not the pressing force corresponding to the operating force is greater.
- step S160 If it is determined in step S160 that the detected pressing force is greater than the pressing force corresponding to the detected brake operation force, the process proceeds to step S171, and the wedge plate 37 is moved in a direction to decrease the pressing force ( A drive signal is output from the controller 91 to the electric motor 25 so as to move the wedge plate 37 to the inner side.
- step S172 the wedge plate 37 is moved in a direction to increase the pressing force ( A drive signal is output from the controller 91 to the electric motor 25 so as to move the wedge plate 37 to the outer side.
- the pressing force is fed back and the steps S160, S171 and S172 are repeated, so that the inner pad 43 is pressed against the braking surface 4a with the pressing force corresponding to the brake operation force with respect to the brake pedal 92.
- the rotation drive control of the motor 25 is performed. By doing so, the braking force intended by the driver can be applied to the rotor 4 to decelerate the vehicle.
- the wedge plate 37 may be configured to slide in a state of facing the base plate 35.
- the logarithm of the wedge grooves 35a and 37c can be set according to the size of the wedge plate 37 or the like.
- the configuration example in which the pressing force of the inner pad 43 is detected using the sensor 31 and the rotational driving control of the electric motor 25 is performed by feeding back the pressing force has been described.
- the present invention is not limited to this.
- the brake torque generated by pressing the inner pad 43 against the braking surface 4a is detected and fed back, or the deceleration of the vehicle is detected and fed back.
- a configuration for performing rotational drive control of the electric motor 25 may be employed.
- the wedge plate 37 formed with the insertion space 37b including the cam member 27 having the single meshing tooth 27c and the single rack meshing with the single meshing tooth 27c is illustrated.
- the present invention is not limited to this configuration.
- a configuration using a wedge plate in which a cam member having a plurality of meshing teeth and a cam insertion space including a plurality of racks meshing simultaneously with the plurality of meshing teeth is formed.
- the cam member 27 including the main body 27a and the meshing teeth 27c has been described as an example, but instead of the cam member 27 having this configuration, pinion teeth that transmit the rotational driving force of the electric motor 25 are provided. You may use the pinion tooth member formed in this way.
- the configuration example in which the adjustment drive gear 38 is automatically rotated according to the gap between the outer pad 41 and the inner pad 43 and the braking surface 4a and the gap is adjusted has been described.
- the present invention is not limited to this configuration example.
- an adjustment electric motor that rotates the adjustment drive gear is provided separately, and the adjustment of the adjustment electric motor rotation control automatically adjusts the gap between the pad and the braking surface. It is good also as composition to do.
- Disc brake device 4 Rotor 4a Braking surface 10 Caliper assembly (caliper) 24 Electric motor unit 27 Cam member, pinion tooth member 31 Sensor (braking force detection means) 32 Adjuster body (adjustment mechanism) 33 Adjuster cylinder (adjustment mechanism) 35 Base plate (base member) 35a Wedge groove 36 Roller 37 Wedge plate (sliding member) 37a Wedge groove 37d Rack side contact surface (rack teeth) 38 Adjustment drive gear (adjustment mechanism) 39d Spring (wedge biasing member) 41 Outer pad (friction pad) 43 Inner pad (friction pad) 45 Cage (roller holding member) 91 Controller (motor drive control device) 92 Brake pedal (braking operation means) 92a Depression force detection sensor (braking force request value detection means) 93 Rotation direction detection sensor (Rotation direction detection means)
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
4 ローター
4a 制動面
10 キャリパアッセンブリ(キャリパ)
24 電動モータユニット
27 カム部材、ピニオン歯部材
31 センサー(制動力検出手段)
32 アジャスタ本体部(アジャスト機構)
33 アジャスタ筒状体(アジャスト機構)
35 ベースプレート(ベース部材)
35a ウェッジ溝
36 ローラ
37 ウェッジプレート(スライド部材)
37a ウェッジ溝
37d ラック側当接面(ラック歯)
38 アジャスト用駆動歯車(アジャスト機構)
39d スプリング(ウェッジ付勢部材)
41 アウターパッド(摩擦パッド)
43 インナーパッド(摩擦パッド)
45 ケージ(ローラ保持部材)
91 コントローラ(モータ駆動制御装置)
92 ブレーキペダル(制動操作手段)
92a 踏込み力検出センサー(制動力要求値検出手段)
93 回転方向検出センサー(回転方向検出手段)
Claims (6)
- 制動対象となる回転体に連結されて回転する円盤状の制動面を有したローターと、前記ローターに対して回転方向に固定されて配置されたキャリパと、前記ローターの制動面に対向して配置される摩擦パッドと、前記キャリパに取り付けられて前記摩擦パッドを前記制動面に押し付ける作動を行わせる制動作動機構とを有して構成されるディスクブレーキ装置であって、
前記制動作動機構が、前記キャリパに取り付けられたベース部材と、前記ベース部材に対向配置されて前記摩擦パッドを保持するスライド部材と、前記ベース部材および前記スライド部材の間に設けられ、前記ベース部材に対して前記スライド部材を前記制動面に平行且つ前記ローターの回転方向にスライド移動させながら前記制動面に垂直な方向に移動させる第1運動変換機構と、前記ベース部材に取り付けられて電力を受けて回転駆動力を出力する電動モータユニットと、前記電動モータユニットの回転駆動力を用いて前記スライド部材を前記制動面に平行且つ前記ローターの回転方向にスライド移動させる第2運動変換機構とを備え、
前記電動モータユニットの回転駆動力を用いて前記第2運動変換機構により前記スライド部材を前記スライド移動させることにより、前記スライド部材およびこれに保持された前記摩擦パッドを前記第1運動変換機構により前記制動面に垂直な方向に移動させて前記摩擦パッドを前記制動面に押し付けて前記ローターの回転を制動するように構成されたことを特徴とするディスクブレーキ装置。 - 制動操作される制動操作手段と、前記制動操作手段の制動操作による制動力要求値を検出する制動力要求値検出手段と、前記摩擦パッドを前記制動面に押し付けることにより生じる制動力を検出する制動力検出手段と、前記電動モータユニットの回転駆動制御を行うモータ駆動制御装置とを備え、
前記モータ駆動制御装置は、前記制動力検出手段により検出された制動力が前記制動力要求値検出手段により検出された制動力要求値に対応する値となるように前記電動モータユニットの回転駆動制御を行うことを特徴とする請求項1に記載のディスクブレーキ装置。 - 前記ローターの回転方向を検出する回転方向検出手段を備え、
前記モータ駆動制御装置は、前記摩擦パッドが前記第1運動変換機構により前記ローターの回転方向に向かってスライド移動しながら前記制動面に押し付けられるように、前記電動モータユニットの回転駆動方向制御を行うことを特徴とする請求項2に記載のディスクブレーキ装置。 - 前記第1運動変換機構が、
前記ベース部材および前記スライド部材における前記制動面に平行に延びて互いに対向する面において、それぞれ前記ローターの回転方向に直角な方向に延び且つ互いに対向して形成されたV字状の複数対のウェッジ溝と、
前記ベース部材および前記スライド部材における互いに対向する複数対の前記ウェッジ溝内にそれぞれ挟持されて配置された複数のローラと、
前記複数のローラの軸方向への移動および前記複数のローラ間の相対的な移動を規制するローラ保持部材と、
前記ベース部材および前記スライド部材における複数対の前記ウェッジ溝内に、前記ローラ保持部材により保持されたそれぞれの前記ローラを挟持した状態で、挟持方向に押圧力を付与するウェッジ付勢部材とから構成されることを特徴とする請求項1~3のいずれかに記載のディスクブレーキ装置。 - 前記第2運動変換機構が、
前記電動モータユニットの出力回転軸に繋がって設けられたカム部材、もしくはインボリュート形状のピニオン歯部材と、
前記スライド部材に形成されて、前記カム部材もしくはピニオン歯部材と噛合するラック歯とから構成され、
前記電動モータユニットにより前記カム部材もしくはピニオン歯部材を回転させることにより、前記ラック歯を介して前記スライド部材を前記スライド移動させるように構成されたことを特徴とする請求項1~4のいずれかに記載のディスクブレーキ装置。 - 前記ベース部材が、アジャスト機構を介して前記キャリパに対して前記制動面に直交する方向に移動可能に取り付けられており、
前記摩擦パッドの摩耗に応じて発生する前記制動面と前記摩擦パッドとの隙間の増加を、前記アジャスト機構により前記ベース部材を前記制動面に近づく方向に移動させて調整可能であることを特徴とする請求項1~5のいずれかに記載のディスクブレーキ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12781993.6A EP2708770A1 (en) | 2011-05-12 | 2012-05-02 | Disk brake device |
US14/116,084 US20140083804A1 (en) | 2011-05-12 | 2012-05-02 | Disk brake device |
CN201280022333.3A CN103518074A (zh) | 2011-05-12 | 2012-05-02 | 盘式制动装置 |
KR1020137030705A KR101940343B1 (ko) | 2011-05-12 | 2012-05-02 | 디스크 브레이크 장치 |
Applications Claiming Priority (2)
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JP2011107678A JP2012237408A (ja) | 2011-05-12 | 2011-05-12 | ディスクブレーキ装置 |
JP2011-107678 | 2011-05-12 |
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WO2012153502A1 true WO2012153502A1 (ja) | 2012-11-15 |
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PCT/JP2012/002970 WO2012153502A1 (ja) | 2011-05-12 | 2012-05-02 | ディスクブレーキ装置 |
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US (1) | US20140083804A1 (ja) |
EP (1) | EP2708770A1 (ja) |
JP (1) | JP2012237408A (ja) |
KR (1) | KR101940343B1 (ja) |
CN (1) | CN103518074A (ja) |
WO (1) | WO2012153502A1 (ja) |
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KR20150031273A (ko) * | 2012-07-05 | 2015-03-23 | 가부시키가이샤 티비케이 | 디스크 브레이크 장치 |
CN104863999A (zh) * | 2014-02-21 | 2015-08-26 | 廖志贤 | 电子式驻车卡钳 |
WO2016174587A1 (en) * | 2015-04-27 | 2016-11-03 | Freni Brembo S.P.A. | Locking device of an electromagnetically-operated brake caliper, brake caliper comprising said caliper, method for operating said caliper |
CN109163031B (zh) * | 2018-09-26 | 2024-01-02 | 陕西法士特齿轮有限责任公司 | 一种amt中间轴制动结构 |
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US20140083804A1 (en) | 2014-03-27 |
JP2012237408A (ja) | 2012-12-06 |
CN103518074A (zh) | 2014-01-15 |
EP2708770A1 (en) | 2014-03-19 |
KR101940343B1 (ko) | 2019-01-18 |
KR20140026507A (ko) | 2014-03-05 |
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