WO2013153643A1 - ディスクブレーキ - Google Patents
ディスクブレーキ Download PDFInfo
- Publication number
- WO2013153643A1 WO2013153643A1 PCT/JP2012/059941 JP2012059941W WO2013153643A1 WO 2013153643 A1 WO2013153643 A1 WO 2013153643A1 JP 2012059941 W JP2012059941 W JP 2012059941W WO 2013153643 A1 WO2013153643 A1 WO 2013153643A1
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- WO
- WIPO (PCT)
- Prior art keywords
- electromagnet
- slide pin
- brake
- disc brake
- pad
- Prior art date
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Classifications
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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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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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
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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
- F16D55/2265—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 one or more pins engaging bores in the brake support or the brake housing
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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
- F16D55/2265—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 one or more pins engaging bores in the brake support or the brake housing
- F16D55/22655—Constructional details of guide pins
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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
- F16D55/2265—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 one or more pins engaging bores in the brake support or the brake housing
- F16D55/227—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 one or more pins engaging bores in the brake support or the brake housing by two or more pins
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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
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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
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
- F16D2055/0029—Retraction devices
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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
- F16D2121/20—Electric or magnetic using electromagnets
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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
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
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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
- F16D2129/00—Type of operation source for auxiliary mechanisms
- F16D2129/06—Electric or magnetic
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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
- F16D2129/00—Type of operation source for auxiliary mechanisms
- F16D2129/06—Electric or magnetic
- F16D2129/08—Electromagnets
Definitions
- the present invention relates to a disc brake in which a caliper is supported by a mounting bracket fixed to a non-rotating part of a vehicle via a slide pin.
- Patent Document 1 has a problem that the cylinder is restricted and cannot be realized practically in order to secure a space for providing a magnet and a solenoid in the cylinder (outside in the radial direction of the brake rotor). is there.
- a configuration that can generate a sufficient magnetic force force that separates the pressure pad from the disk
- an object of the present invention is to provide a disc brake that has good electromagnet mountability and can effectively prevent dragging.
- a disc brake in which a caliper is supported via a slide pin on a mounting bracket fixed to a non-rotating part of a vehicle, An electromagnet provided to the slide pin, the disc brake comprising an electromagnet that attracts the slide pin in an axial direction so that a brake pad is separated from the disc rotor.
- FIG. 1 is a perspective view showing an example of a disc brake 10.
- FIG. FIG. 2 is a cross-sectional view of a main part of the disc brake 10 taken along line TT in FIG. It is a figure which shows the main cross section of the mounting part of the slide pin 70 in the state in which the slide pin 70 exists in a neutral position. It is a figure which shows the main cross section of the mounting part of the slide pin 70 in the state which has the slide pin 70 in the position at the time of braking.
- FIG. 6 is a diagram showing another arrangement example of an electromagnet 800. It is a figure which shows an example of a slide pin position control mechanism.
- FIG. 7 is a cross-sectional view taken along line AA in FIG. 6.
- FIG. 9 is a view showing a cross-section of the main part of the disc brake 10A along the line BB in FIG.
- FIG. 6 is a plan view showing a back surface side (piston 34 side) of a back plate 51b of the inner pad 51.
- 3 is a flowchart illustrating an example of main processing realized by a control device 100.
- FIG. 9 is a view showing another embodiment of the drag preventing mechanism by a cross-sectional view of the disc brake 10A along the line BB in FIG. It is a figure which shows the example of the arrangement
- FIG. 1 is a perspective view showing an example of the disc brake 10
- FIG. 2 is a diagram showing a cross-section of the main part of the disc brake 10 along the line TT in FIG.
- the disc brake 10 includes a mounting bracket 20 (hereinafter simply referred to as “mounting 20”).
- the mounting 20 is fixed to a vehicle body (for example, a knuckle of a suspension).
- a cylinder body (caliper) 30 (hereinafter simply referred to as “cylinder 30”) is attached to the mounting 20 by a slide pin 70.
- the mounting 20 supports brake pads (an inner pad 51 and an outer pad 52). The inner pad 51 and the outer pad 52 are disposed so as to sandwich the disk rotor 14 that rotates together with the wheels from the inside and outside of the vehicle.
- the mounting 20 includes a mounting bridge portion 22 and slide pin accommodating portions 24 on both sides of the cylinder 30 in the circumferential direction of the disk rotor 14. Both slide pin accommodating portions 24 are connected by a mounting bridge portion 22. Both the slide pin accommodating portions 24 extend in the vehicle width direction (inside / outside direction of the vehicle).
- the cylinder 30 is attached to the mounting 20 via the slide pin 70 as described above.
- the cylinder 30 includes a piston 34 and a claw portion 32 that are disposed so as to sandwich the inner pad 51 and the outer pad 52 from the inside and outside of the vehicle.
- the cylinder 30 has a slide pin fixing portion 33.
- a master cylinder (not shown) typically communicates with the cylinder 30 via a hydraulic passage.
- the disc brake 10 may be disposed at any angular position in the wheel circumferential direction with respect to the disc rotor 14.
- the slide pin fixing portion 33 is formed at a position facing each of the slide pin accommodating portions 24 in the vehicle width direction.
- FIG. 3 and 4 are views showing an embodiment of the drag prevention mechanism, and are views showing a main cross section of a portion where the slide pin 70 is mounted.
- FIG. 3 shows a state where the slide pin 70 is in a neutral position (non-braking position)
- FIG. 4 shows a state where the slide pin 70 is in a braking position. Note that the neutral position of the slide pin 70 may correspond to the position of the slide pin 70 when the cylinder 30 is at a normal position (a state in which the cylinder 30 is properly centered).
- the slide pin 70 is provided in a pin hole 24 a formed in the slide pin housing portion 24 of the mounting 20.
- the pin hole 24a is formed with a diameter larger than the diameter of the slide pin 70, and the slide pin 70 is slidable within the pin hole 24a.
- the pin hole 24a may be filled with grease or the like.
- the slide pin 70 is fixed to the slide pin fixing portion 33 of the cylinder 30 with a bolt 78.
- the slide pin 70 includes a boot 76 having a bellows portion.
- the boot 76 functions to protect the exposed portion of the slide pin 70 from the pin hole 24 a of the slide pin housing portion 24. Further, the bellows portion of the boot 76 functions to absorb the change in the length of the exposed portion accompanying the sliding of the slide pin 70. Note that the boot 76 may have any structure or attachment structure.
- the piston 34 moves in the direction of the claw 32, and the inner pad 51 and the outer pad 52 are pressure-bonded so as to sandwich both sliding surfaces of the disk rotor 14 to operate the brake. Is realized.
- the cylinder 30 receives the reaction force from the piston 34 and the slide pin 70 slides from the neutral position (see FIG. 3) to the braking position (see FIG. 4), thereby separating from the mounting 20. It moves to the direction (vehicle inner side in the vehicle width direction).
- the brake is released, the high-pressure fluid is removed from the cylinder 30 (returned to the tank), and the slide pin 70 slides (from the braking position (see FIG. 4) to the neutral position (see FIG. 3).
- the drag preventing mechanism includes an electromagnet 80 provided for the slide pin 70.
- the electromagnet 80 is provided in the slide pin housing portion 24 of the mounting 20.
- the electromagnet 80 includes a cylindrical (hollow) core 82 and a coil 84 wound around the outer periphery of the core 82.
- the cylindrical core 82 is made of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the cylindrical core 82 may be integrated with the slide pin housing portion 24, or may be configured separately and fixed to the slide pin housing portion 24 and integrated.
- the electromagnet 80 is provided on the tip end side (vehicle outer end portion) of the slide pin 70.
- the cylindrical core 82 and the slide pin 70 are preferably arranged in a positional relationship such that the tip of the slide pin 70 when in the neutral position enters the hollow interior of the cylindrical core 82. Is done.
- the electromagnet 80 can draw the distal end side (vehicle outer end portion) of the slide pin 70 into the hollow interior of the cylindrical core 82 when energized.
- the cylindrical core 82 and the slide pin 70 are arranged in such a positional relationship that the tip of the slide pin 70 when in the braking position comes out of the hollow interior of the cylindrical core 82. May be.
- the electromagnet 80 is controlled by a control unit (ECU) 100.
- the control device 100 may control the energization state of the electromagnet 80 in conjunction with the operation of the brake. For example, the control device 100 may maintain the electromagnet 80 in a non-energized state in a normal state, and energize the electromagnet 80 when the brake changes from an activated state to an inactivated state (released state).
- the electromagnet 80 generates magnetic force when energized, and draws the distal end side (vehicle outer end portion) of the slide pin 70 into the hollow interior of the cylindrical core 82. Thereby, dragging that may occur when the brake is released can be reliably prevented.
- the control device 100 may energize the electromagnet 80 every time the brake is released, or may energize the electromagnet 80 every time the brake is released a predetermined number of times, or at regular or irregular timing. Thus, the electromagnet 80 may be energized when the brake is released. Further, the control device 100 may control the energization state of the electromagnet 80 without being interlocked with the operation of the brake. For example, the control device 100 may temporarily energize the electromagnet 80 when the ignition switch is turned on or off. As a result, it is possible to prevent the slide pin 70 from sticking at the braking position (see FIG. 4) or its periphery.
- FIG. 5 is a diagram showing another arrangement example of the electromagnet 800.
- FIG. 5 shows a state where the slide pin 70 is in the neutral position (non-braking position), as in FIG.
- the electromagnet 800 includes a solid core 820 and a coil 840 wound around the outer periphery of the core 820.
- the core 820 is formed of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the core 820 may be configured separately from the slide pin housing portion 24 and may be fixed and integrated with the slide pin housing portion 24.
- the electromagnet 800 is provided on the distal end side (vehicle outer end portion) of the slide pin 70.
- the core 820 is preferably arranged in such a manner that the tip of the slide pin 70 when in the neutral position is close to (or in contact with) the end surface of the core 820.
- the electromagnet 800 can attract the distal end side (vehicle outer end portion) of the slide pin 70 to the end surface of the core 820 when energized.
- the electromagnet 800 is controlled by the control device 100.
- the control mode may be the same as the mode described above with respect to the electromagnet 80.
- the slide pin 70 is forcibly moved by the electromagnetic force of the electromagnets 80 and 800, so that the drag and the fixation of the slide pin 70 that can occur when the brake is released are ensured. Can be prevented.
- the electromagnets 80 and 800 are provided in the slide pin accommodating portion 24 of the mounting 20, the electromagnets 80 and 800 are easy to mount and do not impose great restrictions on the design of the cylinder 30.
- the electromagnets 80 and 800 can be arranged so that the electromagnetic force acts directly on the slide pin 70, the necessary electromagnetic force can be generated without increasing the size.
- the slide pin 70 should just be comprised with the material (for example, magnetic material) attracted
- the tip portion of the slide pin 70 may be made of a material different from other portions so that the slide pin 70 is attracted more strongly by the electromagnetic force of the electromagnets 80 and 800.
- only the tip of the slide pin 70 may be made of a magnetic material (including a hard magnetic material).
- FIG. 6 shows an example of the slide pin position control mechanism.
- FIG. 7 is a sectional view taken along line AA in FIG.
- the electromagnet 800 is attached to the end of the slide pin accommodating portion 24 as a drag preventing mechanism, but an electromagnet 80 may be used instead of the electromagnet 800.
- the slide pin position control mechanism includes a step motor 90.
- the step motor 90 is provided in the slide pin housing portion 24 of the mounting 20. That is, a non-rotating portion (for example, a casing) of the step motor 90 is fixed on the slide pin accommodating portion 24 of the mounting 20.
- the slide pin position control mechanism includes a rack 702 formed on the slide pin 700.
- a pinion 92 is engaged with the rack 702.
- a counter gear 94 is engaged with the pinion 92.
- the gear 96 is provided coaxially with the rotation shaft of the counter gear 94 and rotates together with the counter gear 94.
- the gear 96 is meshed with a gear 98 having a rotation axis orthogonal to the rotation axis of the counter gear 94. That is, the gear 96 and the gear 98 function as bevel gears.
- the gear 98 is provided coaxially with the rotation shaft of the step motor 90. That is, the gear 98 rotates around the output shaft of the step motor 90.
- the linear motion (sliding motion) of the slide pin 700 is converted into a rotational motion by the pinion 92, and the rotational axis of the rotational motion is changed by 90 degrees by the gear 96 and the gear 98. It is transmitted to the shaft (motor shaft).
- the step motor 90 is controlled by the control device 100.
- the control apparatus 100 may be shared with the control apparatus which controls the electromagnet 800, and another control apparatus may be sufficient as it.
- the linear motion of the slide pin 700 is converted into rotational motion by the pinion 92, and this rotational motion is transmitted to the rotational shaft of the step motor 90 by changing the rotational axis by 90 degrees by the gear 96 and the gear 98.
- the control device 100 detects the position of the slide pin 700 by detecting the rotation position of the step motor 90 (rotation position of the rotor) while the electromagnet 800 is energized.
- the control device 100 causes the step motor 90 to generate a reaction force (rotational torque) when the rotational position of the step motor 90 reaches a predetermined position (predetermined angle).
- This reaction force acts to stop further movement of the slide pin 700.
- the magnitude of the reaction force is set to be large enough to stop further movement of the slide pin 700.
- the predetermined position (predetermined angle) of the step motor 90 may correspond to the neutral position of the slide pin 700. Accordingly, it is possible to prevent inconvenience (dragging of the inner pad 51 inside the vehicle) caused by the electromagnet 800 pulling the slide pin 700 too much beyond the neutral position of the slide pin 700.
- Example 2 an example (Example 2) in which a drag preventing mechanism is provided for the brake pads (inner pad 51 and outer pad 52) will be described.
- the drag preventing mechanism is provided in both the inner pad 51 and the outer pad 52.
- the drag preventing mechanism may be provided only in either the inner pad 51 or the outer pad 52. .
- FIG. 8 is a perspective view showing an example of a disc brake 10A according to the second embodiment
- FIG. 9 is a view showing a cross-section of the main part of the disc brake 10A along the line BB in FIG.
- FIG. 10 is a plan view showing the back surface side (piston 34 side) of the back plate 51 b of the inner pad 51.
- the drag preventing mechanism includes electromagnets 800A and 800B provided for the inner pad 51 and the outer pad 52, respectively.
- the electromagnet 800A is supported (fixed) on the piston 34 as shown in FIG.
- the electromagnet 800 ⁇ / b> A is arranged using the space in the piston 34.
- the electromagnet 800A can be disposed at a position facing the centroid of the back side (back plate 51b) of the inner pad 51 in the vehicle width direction.
- the electromagnet 800A includes a solid core 820A and a coil 840A wound around the outer periphery of the core 820A.
- the core 820A is formed of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the electromagnet 800A is controlled by the control device 100.
- Control device 100 may control the energization state of electromagnet 800A in conjunction with the operation of the brake. For example, the control device 100 may maintain the electromagnet 800A in a non-energized state in a normal state and energize the electromagnet 800A when the brake is changed from an activated state to a non-activated state.
- the electromagnet 800A generates a magnetic force when energized, and attracts the back plate 51b (and consequently the inner pad 51) of the inner pad 51 to the core 820A. Thereby, dragging that may occur when the brake is released can be reliably prevented.
- the control device 100 may energize the electromagnet 800A every time the brake is released, or energize the electromagnet 800A every time the brake is released a predetermined number of times, or at regular or irregular timings. Thus, the electromagnet 800A may be energized when the brake is released.
- the electromagnet 800B is supported (fixed) on the mounting bridge portion 22 of the mounting 20, as shown in FIGS. As shown in FIG. 8, the electromagnet 800 ⁇ / b> B is arranged using a space between the two forks of the claw portion 32 of the cylinder 30 (a space between two claws). Accordingly, the electromagnet 800B can be disposed at a position facing the centroid of the back side (back plate 52b) of the outer pad 52 in the vehicle width direction.
- the electromagnet 800B includes a solid core 820B and a coil 840B wound around the outer periphery of the core 820B.
- the core 820B is formed of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the electromagnet 800B may be configured as a unit built in the housing, and this unit may be fixed to the mounting bridge portion 22 of the mounting 20 and integrated.
- the electromagnet 800B is controlled by the control device 100.
- the control device 100 may control the energization state of the electromagnet 800B in conjunction with the operation of the brake. For example, the control device 100 may maintain the electromagnet 800B in a non-energized state in a normal state, and energize the electromagnet 800B when the brake is changed from the activated state to the non-activated state.
- the electromagnet 800B generates a magnetic force when energized, and attracts the back plate 52b (and thus the outer pad 52) of the outer pad 52 to the core 820B. Thereby, dragging that may occur when the brake is released can be reliably prevented.
- the control device 100 may energize the electromagnet 800B every time the brake is released, or energize the electromagnet 800B every time the brake is released a predetermined number of times, or at regular or irregular timings.
- the electromagnet 800B may be energized when the brake is released.
- the electromagnet 800B is energized in synchronization with the electromagnet 800A.
- drag that may occur when the brake is released can be reliably prevented by forcibly moving the inner pad 51 and the outer pad 52 by the electromagnetic force of the electromagnets 800A and 800B.
- the electromagnets 800A and 800B are provided using the existing space, the mountability is good and the design of the cylinder 30 is not greatly restricted.
- the electromagnets 800A and 800B can be arranged so that the electromagnetic force acts directly on the inner pad 51 and the outer pad 52 (the back plates 51b and 52b), they generate the necessary electromagnetic force without increasing the size. can do.
- each of the back plates 51b and 52b of the inner pad 51 and the outer pad 52 may be made of a magnetic material (for example, iron) attracted by the electromagnetic force of the electromagnets 800A and 800B.
- a magnetic material for example, iron
- centroids of the back plates 51b and 52b of the inner pad 51 and the outer pad 52 are arranged so that the back plates 51b and 52b of the inner pad 51 and the outer pad 52 are more strongly attracted by the electromagnetic force of the electromagnets 800A and 800B. It may be made of a material different from other parts.
- a magnet 51 a may be attached to the back plate 51 b of the inner pad 51 in a region substantially corresponding to the centroid of the inner pad 51.
- the magnet 51a may be fixed to the surface of the back plate 51b, or may be embedded in a recess formed in the back plate 51b. The same applies to the magnet 52a on the back side 52b of the outer pad 52.
- the magnets 51a and 52a are arranged at positions that do not coincide with the centroids of the inner pad 51 and the outer pad 52 (positions slightly shifted from the centroid) in consideration of changes in the surface pressure of the friction surfaces of the inner pad 51 and the outer pad 52. May be. Therefore, “corresponding to the centroid” is a concept including a position slightly deviated from the centroid.
- the inner pad 51 and the outer pad 52 can be uniformly spaced from the sliding surface of the disk rotor 14. Thereby, the drag which may arise when the inner peripheral side or the outer peripheral side of the inner pad 51 and the outer pad 52 falls due to non-uniform pulling can be appropriately prevented.
- the core 820A of the electromagnet 800A is preferably provided on the back plate 51b (or there) of the inner pad 51 when in the neutral position (regular non-braking position) as shown in FIG.
- the magnet 51a) is arranged in a manner close to (or in contact with) the end face of the core 820A.
- the electromagnet 800A can more strongly attract the inner pad 51 to the end surface of the core 820A when energized.
- the core 820B of the electromagnet 800B preferably has the back plate 52b of the outer pad 52 (or the magnet 52a provided thereon) close to the end surface of the core 820B when in the neutral position. It arrange
- each back plate 51b and 52b may be formed with a nonmagnetic material.
- the regions of the magnets 51a and 52a in the back plates 51b and 52b (that is, the regions facing the cores 820A and 820B of the electromagnets 800A and 800B in the vehicle width direction). ) May be made of a soft magnetic material instead of the hard magnetic material.
- FIG. 11 is a flowchart showing an example of main processing realized by the control device 100.
- the function of the control device 100 may be realized by another ECU (for example, a brake ECU) or may be realized in cooperation with another ECU.
- step 1100 it is determined whether or not a brake operation has been detected.
- the presence or absence of the brake operation may be determined based on a brake pedal depression switch, a master cylinder pressure sensor, or the like. If a brake operation is detected, the process proceeds to step 1102.
- step 1102 it is determined whether braking is in progress. Whether or not braking is being performed may be determined based on a depression force switch of a brake pedal, a master cylinder pressure sensor, a wheel cylinder pressure sensor, or the like. If the brake is being applied, the process proceeds to step 1104. If not, that is, if the brake operation is released, the process proceeds to step 1106.
- step 1104 the current applied to the electromagnets 800A and 800B is stopped, and the process returns to step 1102. If no current is applied to the electromagnets 800A and 800B, the process returns to step 1102 as it is. Thus, during braking, the electromagnets 800A and 800B do not operate, and the electromagnets 800A and 800B do not hinder the state where the inner pad 51 and the outer pad 52 are pressed against both sliding surfaces of the disk rotor 14.
- step 1106 a current is applied to the electromagnets 800A and 800B at a predetermined current value.
- electromagnetic force is generated by the electromagnets 800A and 800B, and the inner pad 51 and the outer pad 52 are attracted to the cores 820A and 820B of the electromagnets 800A and 800B.
- the inner pad 51 and the outer pad 52 are appropriately separated from both sliding surfaces of the disk rotor 14 when the brake is released.
- the processing shown in FIG. 11 relates to the drag prevention mechanism shown in FIG. 8, but the drag prevention mechanism (or below) provided for the slide pin 70 shown in FIGS. 3 to 5 described above.
- the same processing procedure may be applied to other drag prevention mechanisms described below.
- FIG. 12 is a diagram showing another embodiment of the drag preventing mechanism by a cross-sectional view of the disc brake 10A along the line BB in FIG. 13 and 14 are diagrams showing an example of an arrangement method of the electromagnet 800C.
- the embodiment shown in FIG. 12 differs from the embodiment shown in FIG. 9 in that the electromagnets 800A and 800B are replaced with electromagnets 800C and 800D. Further, the embodiment shown in FIG. 12 is mainly different from the embodiment shown in FIG. 9 in that the magnets 51a and 52a are replaced with rod-shaped members 51c and 52c.
- the electromagnet 800C is supported (fixed) on the piston 34 as shown in FIG.
- the electromagnet 800 ⁇ / b> C is disposed using the space in the piston 34.
- the electromagnet 800C can be disposed at a position facing the centroid of the back side (back plate 51b) of the inner pad 51 in the vehicle width direction.
- the electromagnet 800C includes a hollow (cylindrical) core 820C and a coil 840C wound around the outer periphery of the core 820C.
- the core 820C is formed of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the core 820C may be fitted into the hollow piston 34 and fixed to the piston 34 by a claw 821C.
- the core 820C may be assembled in the piston 34 with the coil 840C wound around the outer periphery.
- the core 820C may be formed when the piston 34 is cast as shown in FIG. That is, the core 820 ⁇ / b> C may be integrally cast with the piston 34 as an inner cylinder inside the piston 34.
- the coil 840C is wound around the outer periphery of the core 820C in the cast piston 34.
- the electromagnet 800D is supported (fixed) on the mounting bridge portion 22 of the mounting 20.
- the electromagnet 800D is arranged using a space between the forked portions of the claw portion 32 of the cylinder 30 in the same manner as the electromagnet 800B described above.
- the electromagnet 800D can be disposed at a position facing the centroid of the back side (back plate 52b) of the outer pad 52 in the vehicle width direction.
- the electromagnet 800D includes a hollow (cylindrical) core 820D and a coil 840D wound around the outer periphery of the core 820D.
- the core 820D is formed of a magnetic material, and may be, for example, an iron material, a laminated steel plate, or a compression molded member of a powdery soft magnetic material.
- the electromagnet 800D may be configured as a unit built in the housing, and this unit may be fixed and integrated with the mounting bridge portion 22 of the mounting 20.
- each of the back plates 51b and 52b of the inner pad 51 and the outer pad 52 may be made of a magnetic material (for example, iron) attracted by the electromagnetic force of the electromagnets 800C and 800D.
- a magnetic material for example, iron
- the centroids of the back plates 51b and 52b of the inner pad 51 and the outer pad 52 are attracted more strongly by the electromagnetic force of the electromagnets 800C and 800D.
- rod-shaped members 51c and 52c may be attached.
- the rod-shaped members 51c and 52c are arranged at positions that do not coincide with the centroids of the inner pad 51 and the outer pad 52 (positions slightly shifted from the centroid) in consideration of changes in the surface pressure of the friction surfaces of the inner pad 51 and the outer pad 52. May be. Therefore, “corresponding to the centroid” is a concept including a position slightly deviated from the centroid.
- the rod-shaped members 51c and 52c are disposed at positions corresponding to the centroids of the inner pad 51 and the outer pad 52, and the electromagnets 800C and 800D are disposed at positions facing the rod-shaped members 51c and 52c in the vehicle width direction.
- the electromagnets 800 ⁇ / b> C and 800 ⁇ / b> D are operated, the inner pad 51 and the outer pad 52 can be uniformly separated from the sliding surface of the disk rotor 14. Thereby, the drag which may arise when the inner peripheral side or outer peripheral side of the inner pad 51 and the outer pad 52 falls can be prevented appropriately.
- the rod-shaped members 51c and 52c may be fixed to the back plates 51b and 52b by an arbitrary method.
- holes may be formed in the back plates 51b and 52b, and the rod-shaped members 51c and 52c may be fixed in these holes.
- the rod-like members 51c and 52c may be made of a material (for example, a magnetic material) that is attracted by the electromagnetic force of the electromagnets 800C and 800D.
- the distal end portions (free end side) of the rod-shaped members 51c and 52c may be made of a material different from other portions so that the rod-shaped members 51c and 52c are attracted more strongly by the electromagnetic force of the electromagnets 800C and 800D.
- only the tip portions of the rod-shaped members 51c and 52c may be made of a magnetic material (including a hard magnetic material).
- the rod-shaped member 51c and the cylindrical core 820C are arranged in a positional relationship such that the tip of the rod-shaped member 51c when in the neutral position enters the hollow interior of the cylindrical core 820C.
- the electromagnet 800C can draw the distal end side (free end side) of the rod-shaped member 51c into the hollow interior of the cylindrical core 820C when energized.
- the rod-like member 51c and the cylindrical core 820C may be arranged in such a positional relationship that the tip of the rod-like member 51c when in the braking position comes out of the hollow interior of the cylindrical core 820C.
- the rod-shaped member 52c and the cylindrical core 820D are arranged in a positional relationship such that the tip of the rod-shaped member 52c when in the neutral position enters the hollow interior of the cylindrical core 820D.
- the electromagnet 800D can draw the distal end side (free end side) of the rod-shaped member 52c into the hollow interior of the cylindrical core 820D when energized.
- the rod-shaped member 52c and the cylindrical core 820D may be arranged in a positional relationship such that the tip of the rod-shaped member 52c when in the braking position exits from the hollow interior of the cylindrical core 820D.
- Electromagnets 800C and 800D are controlled by the control device 100.
- the control mode may be the same as the mode described above with reference to the electromagnets 800A and 800B (see FIG. 11).
- various drag preventing mechanisms may be used in combination.
- a drag preventing mechanism provided for the slide pin 70 and a drag preventing mechanism provided for the inner pad 51 and the outer pad 52 may be used in combination.
- Various drag preventing mechanisms may be used in combination with any other drag preventing mechanism (for example, a mechanism for returning to the neutral position using the elastic force of the spring, the negative pressure in the slide pin 70, or the like).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
前記スライドピンに対して設けられる電磁石であって、ブレーキパッドがディスクロータから離れるように軸方向に前記スライドピンを引き付ける電磁石を備えることを特徴とする、ディスクブレーキが提供される。
14 ディスクロータ
20 マウンティング
22 マウンチングブリッジ部
24 スライドピン収容部
24a ピン孔
30 シリンダー
32 爪部
34 ピストン
33 スライドピン固定部
51 インナパッド
51a 磁石
51b 裏板
51c 棒状部材
52 アウタパッド
52a 磁石
52b 裏板
52c 棒状部材
70,700 スライドピン
76 ブーツ
80,800,800A-D 電磁石
82,820,820A-D コア
84,840,840A-D コイル
90 ステップモータ
100 制御装置
Claims (7)
- 車両の非回転部に固定されるマウンティングブラケットにキャリパがスライドピンを介して支持されるディスクブレーキにおいて、
前記スライドピンに対して設けられる電磁石であって、ブレーキパッドがディスクロータから離れるように軸方向に前記スライドピンを引き付ける電磁石を備えることを特徴とする、ディスクブレーキ。 - 前記電磁石は、通電時に前記スライドピンの端部が中空内部に引き込まれるように配置された中空型の電磁石である、請求項1に記載のディスクブレーキ。
- 車両の非回転部に固定されるマウンティングブラケットにキャリパがスライドピンを介して支持されるディスクブレーキにおいて、
ブレーキパッドの裏板の磁性体部位と、
車両幅方向で前記磁性体部位に対向する位置に設けられる電磁石とを備えることを特徴とする、ディスクブレーキ。 - 前記磁性体部位は、前記ブレーキパッドの図心に対応した位置に配置される、請求項3に記載のディスクブレーキ。
- 前記磁性体部位は、車両幅方向に延在する棒状部位を含み、
前記電磁石は、通電時に前記棒状部位の端部が中空内部に引き込まれるように配置された中空型の電磁石である、請求項3又は4に記載のディスクブレーキ。 - 前記電磁石は、内側のブレーキパッドの裏板の前記磁性体部位に対して設けられる第1電磁石を含み、
前記第1電磁石は、ピストンの中空内部に配置される、請求項3~5のうちのいずれか1項に記載のディスクブレーキ。 - 前記電磁石は、外側のブレーキパッドの裏板の前記磁性体部位に対して設けられる第2電磁石を含み、
前記第2電磁石は、シリンダーボデーの爪部の二股部の間の空間を利用して、マウンティングブラケットのマウンチングブリッジ部に固定される、請求項3~6のうちのいずれか1項に記載のディスクブレーキ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/390,504 US9758134B2 (en) | 2012-04-11 | 2012-04-11 | Disk brake |
CN201280072208.3A CN104204598B (zh) | 2012-04-11 | 2012-04-11 | 盘式制动器 |
PCT/JP2012/059941 WO2013153643A1 (ja) | 2012-04-11 | 2012-04-11 | ディスクブレーキ |
JP2014509976A JP5874816B2 (ja) | 2012-04-11 | 2012-04-11 | ディスクブレーキ |
EP12873980.2A EP2837847B1 (en) | 2012-04-11 | 2012-04-11 | Disc brake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2012/059941 WO2013153643A1 (ja) | 2012-04-11 | 2012-04-11 | ディスクブレーキ |
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WO2013153643A1 true WO2013153643A1 (ja) | 2013-10-17 |
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PCT/JP2012/059941 WO2013153643A1 (ja) | 2012-04-11 | 2012-04-11 | ディスクブレーキ |
Country Status (5)
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US (1) | US9758134B2 (ja) |
EP (1) | EP2837847B1 (ja) |
JP (1) | JP5874816B2 (ja) |
CN (1) | CN104204598B (ja) |
WO (1) | WO2013153643A1 (ja) |
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CN104644239B (zh) * | 2015-01-22 | 2017-09-19 | 芜湖锐进医疗设备有限公司 | 新型开颅钻钻头结构 |
USD770346S1 (en) * | 2015-06-16 | 2016-11-01 | Haldex Brake Products Ab | Brake adjuster |
CN105114495B (zh) * | 2015-07-28 | 2017-10-31 | 山东科技大学 | 车辆电磁盘式制动器 |
US11143251B2 (en) * | 2017-01-26 | 2021-10-12 | Hitachi Astemo, Ltd. | Disk brake |
US10233984B2 (en) * | 2017-04-24 | 2019-03-19 | Ford Global Technologies, Llc | Multiple function brake caliper guide pin |
CN107719336B (zh) * | 2017-09-11 | 2019-11-29 | 浙江零跑科技有限公司 | 一种汽车电磁式制动器结构及制动方法 |
CN108443359A (zh) * | 2018-05-17 | 2018-08-24 | 浙江万安科技股份有限公司 | 一种轮毂电机用的支架断开式刹车装置 |
CN109624954A (zh) * | 2018-12-06 | 2019-04-16 | 北京长城华冠汽车科技股份有限公司 | 一种制动系统和汽车 |
CN111173859B (zh) * | 2019-12-31 | 2022-02-01 | 武汉路特斯汽车有限公司 | 一种用于车辆的制动钳总成 |
EP4063683A1 (en) * | 2021-03-22 | 2022-09-28 | Meritor Heavy Vehicle Braking Systems (UK) Limited | A disc brake |
US11994183B2 (en) * | 2021-10-28 | 2024-05-28 | Hl Mando Corporation | Brake assembly with active piston retraction |
DE102022213763A1 (de) | 2022-12-16 | 2024-06-27 | Zf Active Safety Gmbh | Scheibenbremse für ein Kraftfahrzeug für ein Kraftfahrzeug mit optimierter Rückstellung zumindest eines Bremsbelags |
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Also Published As
Publication number | Publication date |
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EP2837847B1 (en) | 2018-11-14 |
CN104204598A (zh) | 2014-12-10 |
JP5874816B2 (ja) | 2016-03-02 |
US20150107943A1 (en) | 2015-04-23 |
US9758134B2 (en) | 2017-09-12 |
EP2837847A4 (en) | 2016-01-13 |
CN104204598B (zh) | 2017-05-31 |
EP2837847A1 (en) | 2015-02-18 |
JPWO2013153643A1 (ja) | 2015-12-17 |
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