CN108105293A - Brake actuator, brake system of car and electric vehicle - Google Patents

Brake actuator, brake system of car and electric vehicle Download PDF

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Publication number
CN108105293A
CN108105293A CN201611045162.2A CN201611045162A CN108105293A CN 108105293 A CN108105293 A CN 108105293A CN 201611045162 A CN201611045162 A CN 201611045162A CN 108105293 A CN108105293 A CN 108105293A
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CN
China
Prior art keywords
brake
output shaft
feed screw
motor
brake actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611045162.2A
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Chinese (zh)
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CN108105293B (en
Inventor
李传博
郑祖雄
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BYD Co Ltd
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BYD Co Ltd
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Publication date
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Priority to CN201611045162.2A priority Critical patent/CN108105293B/en
Publication of CN108105293A publication Critical patent/CN108105293A/en
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Publication of CN108105293B publication Critical patent/CN108105293B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut

Abstract

This disclosure relates to a kind of brake actuator, brake system of car and electric vehicle, the brake actuator includes housing, it is respectively received in the in vivo motor of shell, torquematic transmission and feed screw nut matching mechanism, the output torque of motor passes to feed screw nut matching mechanism so that brake operation by torquematic transmission, torquematic transmission includes planet gear reducing mechanism, in the planet gear reducing mechanism, sun gear is connected with the output shaft transmission of motor, planet carrier is connected with the lead screw transmission of feed screw nut matching mechanism, brake actuator further includes for the power output shaft locking to output shaft or planet carrier or releases the electromagnetic brake of locking, locking output shaft or power output shaft when electromagnetic brake dead electricity, when electromagnetic brake obtains it is electric when discharge output shaft or power output shaft.Brake actuator as described above is not only simple in structure, and is connected by using mechanical with electric, so as to transfer rapid, the fast and sensitive effect of braking response with signal.

Description

Brake actuator, brake system of car and electric vehicle
Technical field
This disclosure relates to technical field of vehicle, and in particular, to a kind of brake actuator, brake system of car and electronic vapour Vehicle.
Background technology
In traditional hydraulic pressure or Pneumatic brake system, there are gas-liquid pipeline complexity, maintenance difficult, arrangement it is complicated, Braking dynamic response is slow, the braking more low distinct disadvantage of comfort property.For example, in brake fluid system, in ANTI LOCK Brake pedal can generate rebound oscillation phenomenon during system acting, affect braking comfort property.For another example, due to brake treadle mechanism Directly it is connected with brake actuator and braking executive device, therefore the impact force generated when vehicle collides can directly lead to It crosses braking system to be transferred in driver's cabin, has seriously affected the security performance of automobile.Therefore, based on above-mentioned problems, in recent years To have developed that its is simple in structure compared to hydraulic pressure or Pneumatic brake system, braking dynamic response is fast and braking comfort property and peace Complete a variety of electromechanical braking systems of good performance.
The content of the invention
The disclosure solves the problems, such as to be to provide brake actuator a kind of simple in structure and that braking dynamic response is fast, automobile system Dynamic system and electric vehicle.
To achieve these goals, according to one aspect of the disclosure, a kind of brake actuator is provided, the brake actuator Coordinate including housing torque, the motor torque being respectively received in the housing torque, torquematic transmission and feed screw nut Mechanism, the output torque of the motor torque feed screw nut matching mechanism passed to by the torquematic transmission so that Brake operation is obtained, the torquematic transmission includes planet gear reducing mechanism torque, in the planet gear reducing mechanism torque, too Sun wheel torque is connected with the output shaft torque, transmission of the motor torque, planet carrier torque and the feed screw nut matching mechanism Leading screw torque transmission is connected, and the brake actuator further includes to move the output shaft torque, or the planet carrier torque Power output shaft carries out locking or releases the electromagnetic brake torque of locking, when the electromagnetic brake torque dead electricity described in locking Output shaft torque, or the power output shaft discharge the output shaft torque, or described when the electromagnetic brake torque obtains electric Power output shaft.
Optionally, the electromagnetic brake torque is connected to the output shaft torque, of the motor torque, for described Output shaft carries out locking or releases locking.
Optionally, the electromagnetic brake torque include electromagnetic drive part torque and with the electromagnetic drive part torque interval cloth It puts and is connected to the braking parts torque of the output shaft torque, the electromagnetic drive part torque includes electromagnetic coil and permanent magnet, When the electromagnetic brake torque dead electricity, the braking parts torque is adsorbed in the electromagnetic drive part torque, when the electromagnetic system When dynamic device torque obtains electric, the electromagnetic drive part torque discharges the braking parts torque.
Optionally, the leading screw includes the path section being connected with planet carrier transmission and coordinates machine with the feed screw nut Thrust bearing, the shell are provided on the coupling part of the major diameter section of the nut cooperation of structure, the path section and the major diameter section It is formed with to abut the step of the thrust bearing stationary end on body.
Optionally, the leading screw includes the path section being connected with planet carrier transmission and coordinates machine with the feed screw nut Thrust bearing is provided on the coupling part of the major diameter section of the nut cooperation of structure, the path section and the major diameter section, it is described small Footpath section is supported on by bearing or axle sleeve in the axis hole of the housing, and the flange of the bearing or axle sleeve is connected to the axis Hole on the end wall of the major diameter section so that the thrust bearing stationary end can be connected to the bearing or axle sleeve Flange.
Optionally, the feed screw nut matching mechanism be planet roller screw mechanism torque, the planetary roller screw machine Structure torque include leading screw torque, roller and nut torque, the roller respectively with the leading screw torque and the nut torque spiral shell Line coordinates, and the roller is provided at both ends with roller gear, be provided on the inner peripheral surface of the nut torque with it is each described It is provided on the internal gear or the outer circumferential surface of the leading screw torque that roller gear is meshed and is mutually nibbled with each roller gear The external gear of conjunction, the nut torque can be moved compared with the leading screw torque along the axis direction of the output shaft torque,.
Optionally, the housing torque includes the first shell portion torque being detachably connected, first shell portion torque It is open with first and is formed with to accommodate the motor torque and the electromagnetic brake in first shell portion torque First accommodating chamber torque of torque and the second accommodating chamber torque for accommodating the planet gear reducing mechanism torque, described One accommodating chamber torque is connected with the second accommodating chamber torque, and the feed screw nut matching mechanism stretches out in first opening.
Optionally, the housing torque further includes the second shell portion torque with the second opening, the second shell portion It is formed with to accommodate the 3rd accommodating chamber torque of the feed screw nut matching mechanism in torque, first opening and described the Two openings are corresponding, when first shell portion torque and second shell portion torque coordinate, the second accommodating chamber torque It is connected with the 3rd accommodating chamber torque.
Optionally, second shell portion torque is floating brake tongs housing, is provided in the second accommodating chamber torque For the inboard friction piece torque with brake disc frictional fit and outboard friction piece torque.
Through the above technical solutions, due to using electronic mechanical brake actuator without setting gas-liquid brake piping, Thus it is not only simple in structure, and is matched somebody with somebody by the way that the output torque of motor is reliably delivered to feed screw nut through torquematic transmission Mechanism is closed, thus, it is possible to effectively friction plate be driven to be clamped brake disc, rapid, braking response is fast so as to be transferred with signal And sensitive effect.
Through the above technical solutions, due to using electronic mechanical brake actuator without setting gas-liquid brake piping, Thus it is not only simple in structure, and is matched somebody with somebody by the way that the output torque of motor is reliably delivered to feed screw nut through torquematic transmission Mechanism is closed, thus, it is possible to effectively friction plate be driven to be clamped brake disc, rapid, braking response is fast so as to be transferred with signal And sensitive effect.
According to another aspect of the disclosure, a kind of brake system of car is also provided, which includes braking Device, the brake are provided with brake actuator as described above.
Optionally, the brake includes brake disc, is provided with to rub with the brake disc in the brake actuator The friction plate of cooperation is wiped, the feed screw nut matching mechanism can drive the friction plate to clamp the brake disc.
According to the another aspect of the disclosure, a kind of electric vehicle is also provided, which includes vehicle as described above Braking system.
The effect of the brake system of car of the disclosure and the effect of electric vehicle and above-mentioned brake actuator It is identical, it is repeated no more herein in order to avoid repeating.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool Body embodiment is together for explaining the disclosure, but do not form the limitation to the disclosure.In the accompanying drawings：
Fig. 1 is the structural representation schematic diagram for the brake actuator that the illustrative first embodiment of the disclosure provides；
Fig. 2 is the structure principle chart one for the brake actuator that the illustrative first embodiment of the disclosure provides；
Fig. 3 is the structure principle chart two for the brake actuator that the illustrative first embodiment of the disclosure provides；
Fig. 4 is the structure chart of motor in the brake actuator that the illustrative first embodiment of the disclosure provides；
Fig. 5 is the structure of planet gear reducing mechanism in the brake actuator that the illustrative first embodiment of the disclosure provides Schematic diagram；
Fig. 6 is the structure principle chart for the brake actuator that the illustrative second embodiment of the disclosure provides；
Fig. 7 is the structure principle chart for the brake actuator that illustrative 3rd embodiment of the disclosure provides；
Fig. 8 is that motor is connected with electromagnetic brake in the brake actuator that illustrative 3rd embodiment of the disclosure provides Structure diagram；
Fig. 9 is the part-structure schematic diagram for the brake actuator that illustrative 4th embodiment of the disclosure provides；
Figure 10 is that a kind of another part structure for brake actuator that illustrative 4th embodiment of the disclosure provides is former Reason figure；
Figure 11 is motor and electromagnetic braking in a kind of brake actuator that illustrative 4th embodiment of the disclosure provides The structure diagram of device connection；
Figure 12 is the part-structure principle for another brake actuator that illustrative 4th embodiment of the disclosure provides Figure；
Figure 13 is another part structure for another brake actuator that illustrative 4th embodiment of the disclosure provides Schematic diagram.
Specific embodiment
The specific embodiment of the disclosure is described in detail below in conjunction with attached drawing.It should be appreciated that this place is retouched The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the case where not making explanation on the contrary, the noun of locality such as " inside and outside " used refers to corresponding portion Part profile it is inner and outer.
As shown in Figures 1 to 12, the brake actuator that the disclosure is provided by schematical four kinds of embodiments, can By simple structure friction plate is effectively driven to clamp brake disc, the braking response time of automobile can be effectively improved, and improved The performances such as comfort and operability.Here, for similar structure, effect etc. in four kinds of illustrative embodiments, in order to keep away Exempt to repeat, in the case where having been described in before, do not do and excessively repeat.
As shown in Figures 1 to 5, the brake actuator provided according to first embodiment includes housing 100, is respectively received in Motor 101, torquematic transmission and feed screw nut matching mechanism in the housing 100, the output torque of the motor 101 The feed screw nut matching mechanism is passed to by the torquematic transmission so that brake operation, the torque transmission dress It puts including driving gear set 102 and multiple planet gear reducing mechanisms 103, the driving gear set 102 includes driven gear 1021 The multiple driving gears 1022 engaged respectively with the driven gear 1021, in the planet gear reducing mechanism 103, each sun Wheel 1031 is driven with the output shaft 1011 of corresponding motor 101 to be connected, each planet carrier 1032 with it is corresponding The transmission of driving gear 1022 is connected, and each gear ring 1034 is individually fixed in the housing 100, the feed screw nut cooperation The leading screw 1061 of mechanism is connected with the driven gear 1021 transmission.
Wherein, brake can be disk brake, the friction plate including brake disc and with brake disc frictional fit, can be with By feed screw nut matching mechanism friction plate is driven to clamp brake disc, so as to fulfill service brake or parking braking.Specifically, Here, electronic control unit can be gone for the output torque size of motor 101 according to the brake force and braking of brake pedal Journey controls.Furthermore it is possible to by key connection or spline connect etc. modes realize sun gear 1031 with it is corresponding described The transmission of output shaft 1011 of motor 101 is connected and each planet carrier 1032 is passed with corresponding driving gear 1022 It is dynamic to be connected, can also sun gear 1031 and motor 101, planet carrier 1032 and driving tooth be realized using positive form herein Transmission between wheel 1022 is connected.Wherein, the torque exported by each motor 101 is transferred to corresponding planet-gear speed reducer Sun gear 1031 in structure 103, and it is transferred to via planetary gear 1033 and planet carrier 1032 driving gear of driving gear set 102 On 1022, then feed screw nut cooperation is eventually transferred to via with the driven gear 1021 being meshed with each driving gear 1022 Mechanism so that the nut 1062 of feed screw nut matching mechanism can drive friction plate 104 to clamp brake disc 105, be achieved in going Vehicle is braked.As described above, by the brake actuator of simple structure friction plate 104 is effectively driven to press from both sides brake disc 105 Tightly, so as to effectively improve the braking response time of automobile, there is signal to transfer rapid and sensitive effect.In addition, It is connected by the connection structure of mechanically and electrically minor to eliminate the machinery and gas-liquid of brake pedal and brake actuator, thus Rebound phenomenon will not be generated to brake pedal, in braking so as to improve performances such as comfort and operability.In addition, by adopting Coordinated with the transmission of multiple planet gear reducing mechanisms 103 and driving gear set 102 and more reliably feed screw nut can be matched somebody with somebody The leading screw 1061 for closing mechanism transfers torque, transmission efficiency and reliable power output is effectively ensured, and has energy saving Effect.
Optionally, as shown in Figures 2 to 4, at least one of described motor 101 includes being separately positioned on electric machine casing In 1010 for output torque motor section 1012 and for the output shaft 1011 of the motor section 1012 carry out locking or Release the electromechanical locks stop 1013 of locking.Locking to the locking of motor section 1012 or is released by electromechanical locks stop 1013 as a result, To realize parking braking.Here, the arrangement of various reasonable may be employed in electromechanical locks stop 1013, as long as can be to motor section 1012 output shaft 1011 carries out locking or releases locking.For example, electromechanical locks stop 1013 can be to be exported for clamping The clamping piece of axis 1011 or the lock piece for being caught in output shaft 1011.But it's not limited to that for the disclosure, such as can also Locking is carried out to the output shaft 1011 of motor 101 by the electromagnetic brake for being used as component known in this field or releases locking.
Optionally, the electromechanical locks stop 1013 includes being connected to the inner attrition piece 1017 of the output shaft 1011, connection In the outside friction disc 1018 and sticking department and electromagnetic drive part of the electric machine casing 1010, upon loss of power, the sticking department drives The dynamic electromagnetic drive part, which moves, causes the outside friction disc 1018 and 1017 frictional fit of inner attrition piece, with described in locking Output shaft 1011, when obtaining electric, the direction of the electromagnetic drive part along the latching force for overcoming the sticking department is moved so that described Outside friction disc 1018 releases frictional fit with the inner attrition piece 1017, to discharge the output shaft 1011.Here, inner attrition piece 1017 and outside friction disc 1018 structure can according to actual needs come specifically design, for example, the outer surface of inner attrition piece 1017 On radially protrude multiple first contact plates, multiple have been projected radially inward on the inner surface of outside friction disc 1018 Two contact plates, the first contact plate and the second contact plate arranged for interval along in the direction of motion when obtaining electric.In order to increase first Frictional force between contact plate and the second contact plate can be provided with more in the opposite side of the first contact plate and the second contact plate The concaveconvex structure of a mutual cooperation.For another example, inner attrition piece 1017 and outside friction disc 1018, which can be formed as having, is engaged shape Apparent surface the first braking block and the second braking block, in dead electricity, outside friction disc 1018 and inner attrition piece 1017 Apparent surface coordinates.
Optionally, as shown in figure 4, the electromagnetic drive part includes electromagnetic coil 1014 and annular magnet 1015, the lock Determine portion for spring 1016, the electromechanical locks stop 1013 further include be fixed with the inner attrition piece 1017 and with the output shaft The connected one-way clutch 1019 of 1011 transmissions, the part inner peripheral surface of the annular magnet 1015 and the electromagnetic coil 1014 are matched somebody with somebody Close so as to flexible compared with the electromagnetic coil 1014, the spring 1016 be located at the inner peripheral surface of the electromagnetic coil 1014 and It is separately fixed on the inner end of the electric machine casing 1010 and a side end face of the annular magnet 1015, the inner attrition piece 1017 and the outside friction disc 1018 be located at the opposite side of the annular magnet 1015 and along the axis side of the output shaft 1011 To spaced arrangement, upon loss of power, the spring 1016 drives the annular magnet 1015 to promote the outside friction disc 1018, So that the outside friction disc 1018 and 1017 frictional fit of inner attrition piece, so as under the action of one-way clutch 1019 The output shaft 1011 of locking motor section 1012.When it is electric when, the annular magnet 1015 is along the elasticity for overcoming the spring 1016 The direction of power moves and departs from the outside friction disc 1018, so that the outside friction disc 1018 is solved with the inner attrition piece 1017 Except frictional fit.Parking braking function is reliably achieved from there through the motor 101 of structure as described above.
As shown in Figure 1 to Figure 3, optionally, the leading screw 1061 includes being connected with the driven gear 1021 transmission small The company of footpath section and the major diameter section with the cooperation of nut 1062 of the feed screw nut matching mechanism, the path section and the major diameter section Thrust bearing 107 is provided in socket part point, is formed with to abut 107 stationary end of thrust bearing on the housing 100 Step 1006.Here, path section can be supported on by sliding bearing, rolling bearing or anti-attrition copper sheathing 108 in housing 100, from And it is capable of the abrasion of reduction leading screw 1061 and plays the role of protecting leading screw 1061.In addition, brake actuator off working state Under, there can be axial gap between the thrust bearing 107 and the step 1006, as a result, at work, pass through nut The reaction force of 1062 pairs of leading screws 1061 and can drive thrust bearing 107 that it is made to abut on step 1006, from there through setting Thrust bearing 107 is put to bear axial load, so as to the work with limitation leading screw 1061 compared with the axial displacement of housing 100 With.
Optionally, the feed screw nut matching mechanism be planet roller screw mechanism 106, the planet roller screw mechanism 106 include leading screw 1061, roller and nut 1062, and the roller is matched somebody with somebody respectively with the leading screw 1061 and 1062 screw thread of the nut It closes, and the roller is provided at both ends with roller gear, is provided on the inner peripheral surface of the nut 1062 and each roller It is provided with what is be meshed with each roller gear on the internal gear or the outer circumferential surface of the leading screw 1061 that gear is meshed External gear, the nut 1062 can be moved compared with the leading screw 1061 along the axis direction of the output shaft 1011.As above The planet roller screw mechanism 106 of the structure, which has, bears that load is big, strong shock resistance, high transmission accuracy, service life The advantages of long.Here, the roller gear at roller both ends can ensure what is be driven between roller and leading screw 1061 and nut 1062 Synchronism, and can ensure thus to avoid the interference phenomenon caused by the roller skidding of part at pitch circle for pure rolling.As above In the structure, it is arranged on roller gear meshed gears on the inner peripheral surface of nut 1062, but it's not limited to that for the disclosure, For example, in the case of being not provided with internal gear on the inner peripheral surface of nut 1062, it can be on the correspondence outer circumferential surface of leading screw 1061 The external gear being meshed with roller gear is set.In addition, also optionally, feed screw nut matching mechanism or ball-screw spiral shell Parent agency or Mechanism of Sliding Leadscrew Nut etc..
Optionally, as shown in Figure 1 to Figure 3, it is defeated to be formed as power for the planet gear reducing mechanism 103 and the motor 101 Go out group, which is respectively arranged with two groups in the housing 100, and is arranged symmetrically in the feed screw nut cooperation machine The both sides of structure.The specific arrangement of planet gear reducing mechanism 103 in the two power output groups wherein used is identical, two Electromechanical locks stop 1013 as described above can be provided at least one of motor 101.By driving gear set 102 from Moving gear 1021 slows down reliably to be transferred to the leading screw 1061 of feed screw nut matching mechanism through each planet gear reducing mechanism 103 Torque after increment.But it's not limited to that for the disclosure, can be according to actual conditions come the number of reasonable design power output group Amount.
Optionally, the power output group is arranged in parallel respectively with the feed screw nut matching mechanism.So that braking Actuator has the advantages that compact overall structure and shared installation space is small.
Optionally, the driving gear set 102 includes being engaged on the driving gear 1022 and the driven gear 1021 Between sloth wheel gear 1023, reasonably to arrange the gearratio of driving gear set 102 according to assembly environment.
Optionally, the housing 100 includes the first shell portion 1001 being detachably connected and second shell portion 1002, described It is formed with to accommodate the feed screw nut matching mechanism and with the first accommodating chamber of the first opening in first shell portion 1001 1003rd, the both sides of first accommodating chamber 1003 and the second accommodating chamber 1004 for accommodating the power output group are arranged symmetrically in And the 3rd accommodating chamber 1005 for accommodating the driving gear set 102 and being open with second, the 3rd accommodating chamber 1005 It is connected respectively with 1003 and second accommodating chamber 1004 of the first accommodating chamber, the second shell portion 1002 and the first shell Portion 1001 coordinates second opening for sealing the 3rd accommodating chamber 1005, first opening and the described second opening cloth It puts at the both ends in the first shell portion 1001.Brake actuator as described above integrally employs modular construction, arranges It is compact-sized and can reasonably be arranged in limited installation space, and with assembling simple and easy to maintenance effect Fruit.
The brake system of car provided according to first embodiment includes brake, which is provided with as described above Brake actuator.Optionally, the brake includes brake disc 105, be provided in the brake actuator for it is described The friction plate 104 of 105 frictional fit of brake disc, the feed screw nut matching mechanism can drive the friction plate 104 to clamp institute State brake disc 105.Wherein, floating brake tongs may be employed in the brake caliper of brake, the fixed braking on the floating brake tongs The housing 100 or floating brake tongs housing and the housing 100 of actuator are integrally formed, are exported as a result, by motor 101 Torque pass sequentially through planet gear reducing mechanism 103 and driving gear set 102 is transferred to the leading screw of feed screw nut matching mechanism 1061, and then nut 1062 is driven to promote the friction plate 104 in floating brake tongs so that inboard friction piece 1041 and outboard friction Piece 1042 clamps brake disc 105, is achieved in service brake.In addition, in parking braking, 101 dead electricity of motor, electromechanical locks stop 1013 spring 1016 drives annular magnet 1015 to promote outside friction disc 1018 so that outside friction disc 1018 and inner attrition piece 1017 Frictional fit so as to the output shaft 1011 of the locking motor section 1012 under the action of one-way clutch 1019, is achieved in parking Braking.
The electric vehicle provided according to first embodiment includes motor vehicle braking system as described above.By above-mentioned simple The brake actuator of structure and friction plate 104 can effectively be driven to be clamped brake disc 105, so as to effectively improve vapour The braking response time of vehicle, and transfer rapid and sensitive effect with signal.
The first embodiment of the disclosure is described in above-mentioned referring to figs. 1 to Fig. 5, this public affairs is illustrated with reference to Fig. 6 The second embodiment opened.
As shown in fig. 6, the brake actuator that disclosure second embodiment provides includes housing 200, is respectively received in institute Motor 201, torque transmission mechanism and the multiple feed screw nut matching mechanisms in housing 200 are stated, the output of the motor 201 turns Square is delivered separately to each feed screw nut matching mechanism so that brake operation, each by the torque transmission mechanism The feed screw nut matching mechanism is provided with is driven the first transmission gear 2062 being connected, the torque transmission machine with leading screw 2061 The second transmission gear 2033 engaged with each first transmission gear 2062 is provided on structure, so as to so that each described The nut 2063 of feed screw nut matching mechanism synchronously adjusts position in the axial direction.
Here, electronic control unit for the output torque size of motor 201 can according to the brake force of brake pedal with And braking distance controls.In addition, various structures may be employed in torque transmission mechanism, as long as can play to each feed screw nut The torque of matching mechanism output motor 201, for example, can be gear drive, turbine and worm transmission mechanism etc.. This, can realize that motor 201 and the transmission of torque transmission mechanism are connected, Yi Jisi by the modes such as key connection or spline connection Transmission between the leading screw 2061 of thick stick nut matching mechanism and the first transmission gear 2062 is connected.As described above, motor 201 exports Torque the leading screw 2061 of respective feed screw nut matching mechanism is transferred to through torque transmission mechanism so that coordinate machine with feed screw nut The nut 2062 of the transmission cooperation of leading screw 2061 of structure can drive friction plate 204 to clamp brake disc 205, be achieved in driving system It is dynamic.As described above, by the brake actuator of simple structure friction plate 204 is effectively driven to be clamped brake disc 205, from And the braking response time of automobile can be effectively improved, there is signal to transfer rapid and sensitive effect.In addition, this implementation In mode, by a motor 201 multiple feed screw nut matching mechanisms is driven synchronously to adjust position in the axial direction, by This, can steadily promote friction plate 204 make its to brake disc 205 realization be reliably clamped, this structure applied to During the full-sized car of large scale brake disc structure, braking efficiency can effectively ensure that.
Optionally, the torque transmission mechanism includes epicyclic train 202, which includes sun gear 2021st, planet carrier 2022, planetary gear 2023 and gear ring 2024, the output shaft of the sun gear 2021 and the motor 201 2011 transmissions are connected, and the planetary gear 2023 engages respectively with the sun gear 2021 and the gear ring 2024, the gear ring 2024 It is fixed in the housing 200, second transmission gear 2033 has been coaxially disposed on the planet carrier 2022.It is electric as a result, The output torque of machine 201 passes to the leading screw 2061 of each feed screw nut matching mechanism after the epicyclic train 202 deceleration On, i.e. the output torque of motor 201 is connected after sun gear 2021, planetary gear 2023 and planet carrier 2022 by key, spline Etc. forms and planet carrier 2022 be driven the second transmission gear 2033 for being connected or being directly anchored on planet carrier 2022 and pass respectively On the leading screw 2061 for passing each feed screw nut matching mechanism, so that 2063 energy of nut of each feed screw nut matching mechanism It is enough synchronously friction plate 204 to be driven to clamp brake disc 205, so as to fulfill rapidly and reliably service brake.
Alternatively, also optionally, the torque transmission mechanism includes：Epicyclic train 202, the epicyclic train 202 include Sun gear 2021, planet carrier 2022, planetary gear 2023 and gear ring 2024, the sun gear 2021 are defeated with the motor 201 The transmission of shaft 2011 is connected, and the planetary gear 2023 engages respectively with the sun gear 2021 and the gear ring 2024, the tooth Circle 2024 is fixed in the housing 200, and distance center axis is provided on a side surface of the planet carrier 2023 with phase With multiple installation axles at interval；Transfer gear train 203, the transfer gear train 203 is including in transmission ring gear 2031, multiple transmissions Gear 2032 and second transmission gear 2033, each transmission internal gear 2032 are separately fixed at the corresponding peace It fills on axis, and is engaged respectively with the transmission ring gear 2031, second transmission gear 2033 and the transmission ring gear 2031 transmissions are connected or are formed as one.Big gearratio can be realized from there through torque transmission mechanism as described above, And the bigger brake force for meeting brake request can be obtained.But it's not limited to that for the disclosure, as long as can be by motor 201 Output torque is transferred to respectively on the leading screw 2061 of each feed screw nut matching mechanism, so that nut 2063 synchronously drives (inboard friction piece 2041 and outboard friction piece 2042 clamp brake disc 205 to friction plate 204, then torque transmission mechanism may be employed Other rational structures.
Optionally, each leading screw 2061 include with first transmission gear 2062 path section that is connected of transmission and with On the coupling part of the major diameter section that the nut 2063 of the feed screw nut matching mechanism coordinates, the path section and the major diameter section Thrust bearing is provided with, is formed with to abut the step of the stationary end of the thrust bearing on the housing 200.It is here, each A leading screw 2061 can be supported on by sliding bearing, rolling bearing or anti-attrition copper sheathing in the housing 200 respectively, so as to The abrasion of leading screw 2061 can be reduced and play the role of protecting leading screw 2061.In addition, under brake actuator off working state, institute Axial gap can be had by stating between thrust bearing and the step, as a result, at work, by nut 2063 to leading screw 2061 Reaction force and can drive thrust bearing that it is made to abut on step, bear axial load from there through thrust bearing is set Lotus, so as to play an important role of to limit axial displacement of the leading screw 2061 compared with housing 200.
Optionally, identical with first embodimently, the feed screw nut matching mechanism is planet roller screw mechanism 206, the planet roller screw mechanism 206 include the leading screw 2061, roller and nut 2063, the roller respectively with the silk 2063 thread fitting of thick stick 2061 and the nut, and the roller is provided at both ends with roller gear, the nut 2063 it is interior It is provided on the outer circumferential surface of the internal gear being meshed with each roller gear or the leading screw 2061 and is provided on circumferential surface The external gear being meshed with each roller gear, the nut 2063 can be along the outputs compared with the leading screw 2061 The axis direction movement of axis 2011.Thus had using feed screw nut matching mechanism as described above and bear that load is big, shock resistance The advantages of ability is strong, high transmission accuracy, long service life.Here, the roller gear at roller both ends can ensure roller and leading screw The synchronism being driven between 2061 and nut 2063, and can ensure thus part to be avoided to roll for pure rolling at pitch circle Interference phenomenon caused by column skidding.
Optionally, it is provided with to carry out locking or releasing to the output shaft 2011 of the motor 201 on the motor 201 The electromechanical locks stop of locking.So as to carry out locking to the output shaft 2011 of motor 201 by the electromechanical locks stop or release locking To realize the parking braking of brake actuator or release parking braking.Wherein, which can have and implement with first The identical structure of the electromechanical locks stop 1013 that is used in mode, i.e., the motor 201 in present embodiment may be employed and first is real Apply the identical motor 101 of mode.Alternatively, electromechanical locks stop can also be such as electromagnetic brake, it is real the following 3rd to this It applies and is illustrated in mode and the 4th embodiment.
Optionally, in order to ensure that the stabilization of two feed screw nut matching mechanisms is synchronized with the movement, the transfer gear train 203 Between the epicyclic train 202 and the motor 201, the feed screw nut matching mechanism is arranged to two and is arranged symmetrically In the both sides of the torque transmission mechanism.Here, the structure of the two feed screw nut matching mechanisms used is identical.
Optionally, the torque transmission mechanism is arranged in parallel respectively with each feed screw nut matching mechanism.So that Brake actuator has the advantages that compact overall structure and shared installation space is small.
Optionally, as shown in fig. 6, the housing 200 includes the first shell portion 2001 being detachably connected and second shell Portion 2002, the first shell portion 2001 have opposite the first opening and the second opening, and in the first shell portion 2001 It is formed with to accommodate the first accommodating chamber 2003 of the torque transmission mechanism and is arranged symmetrically in first accommodating chamber 2003 Both sides and for accommodating the second accommodating chamber 2004 of each feed screw nut matching mechanism, first opening is formed in institute The one side of the second accommodating chamber 2004 is stated for being penetrated through for the feed screw nut matching mechanism, second opening is formed in described The opposite side of first accommodating chamber 2003 and second accommodating chamber 2004, the second shell portion 2002 has to open with described second The 3rd opposite opening of mouth, and it is formed with to accommodate the 3rd accommodating chamber of the motor 201 in the second shell portion 2002 2005, when the first shell portion 2001 and the second shell portion 2002 coordinate, first accommodating chamber 2003, described second Accommodating chamber 2004 and the 3rd accommodating chamber 2005 are interconnected.Brake actuator as described above integrally employs modularization knot Structure, arrangement is compact and can reasonably be arranged in limited installation space, and and dimension simple with assembling Repair convenient effect.
The brake system of car provided according to second embodiment includes brake, and it is real which is provided with above-mentioned second The brake actuator that the mode of applying provides.Optionally, the brake includes brake disc 205, is provided in the brake actuator For the friction plate 204 with 205 frictional fit of brake disc, the feed screw nut matching mechanism can drive the friction plate 204 clamp the brake disc 205.Floating brake tongs may be employed in the brake caliper of the brake, on the floating brake tongs The housing 200 or floating brake tongs housing of fixed brake actuator are integrally formed with the housing 200, pass through a motor The 201 multiple feed screw nut matching mechanisms of driving synchronously adjust position in the axial direction, and thereby, it is possible to steadily promote friction Piece 204 makes it be reliably clamped the realization of brake disc 205, improves braking efficiency.
The electric vehicle provided according to second embodiment includes the motor vehicle braking system that above-mentioned second embodiment provides. By the brake actuator of simple structure as described above friction plate 204 is effectively driven to be clamped brake disc 205, so as to The braking response time of automobile is enough effectively improved, there is signal to transfer rapid and sensitive effect.
The above-mentioned middle second embodiment that the disclosure is described with reference to Fig. 6, this public affairs is illustrated with reference to Fig. 7 and Fig. 8 The 3rd embodiment opened.
As shown in Figure 7 and Figure 8, the brake actuator that the 3rd embodiment of the disclosure provides includes housing 300, accommodates respectively Motor 301, torquematic transmission and feed screw nut matching mechanism in the housing 300, the output of the motor 301 turn Square passes to the feed screw nut matching mechanism so that brake operation, the torque transmission by the torquematic transmission Device includes planet gear reducing mechanism 302, in the planet gear reducing mechanism 302, the output of sun gear 3021 and the motor 301 The transmission of axis 3011 is connected, and planet carrier 3022 is connected with the transmission of leading screw 3061 of the feed screw nut matching mechanism, and the braking is held Row device further includes to carry out the power output shaft of the output shaft 3011 or the planet carrier 3022 locking or releases locking Electromagnetic brake 303, output shaft 3011 described in locking or the power output shaft when 303 dead electricity of electromagnetic brake, The output shaft 3011 or the power output shaft are discharged when the electromagnetic brake 303 must be electric.
That is, in service brake, the output torque of motor 301 is through sun gear 3021, planetary gear 3023 and planet carrier 3022 It is transferred on the leading screw 3061 of feed screw nut matching mechanism, so that nut 3062 drives friction plate 304 to clamp brake disc 305, service brake is achieved in, when releasing service brake, can gap be realized by 301 dead electricity of motor, brake Self-adjusting or inverted by motor 301 so that 3062 return of nut of feed screw nut matching mechanism, and being made The self-adjusting in dynamic device gap.It, can be by 303 dead electricity of electromagnetic brake and the output shaft of locking motor 301 in parking braking 3011 or the power output shaft of planet carrier 3022, realize parking braking.When releasing braking, electromagnetic brake 303 can be passed through It obtains electric and discharges the output shaft 3011 or the power output shaft, be achieved in releasing parking braking.Here, electronic control is single Member can be controlled for the output torque size of motor 301 according to the brake force and braking distance of brake pedal.As above institute It states, by the brake actuator of simple structure friction plate 304 is effectively driven to be clamped brake disc 305, so as to have Effect improves the braking response time of automobile, and there is signal to transfer rapid and sensitive effect.
In addition, according to actual conditions needs, torquematic transmission and/or feed screw nut matching mechanism can be arranged to more It is a, for example, can the quantity of torquematic transmission and feed screw nut matching mechanism be arranged to identical.Or the braking of the disclosure Actuator could be provided as synchronously driving multiple feed screw nut matching mechanisms by a torquematic transmission, at this point, torque Transmission device can include the form of such as driving gear set to adjust suitable gearratio.Or the braking of the disclosure is held Row device could be provided as steadily and reliably driving a feed screw nut matching mechanism by multiple torquematic transmissions.In this regard, Present embodiment is not construed as limiting especially.
Optionally, the electromagnetic brake 303 is connected to the output shaft 3011 of the motor 301, for described defeated Shaft 3011 carries out locking or releases locking, and the output shaft of motor 301 is directly acted on by the locking power of electromagnetic brake 303 3011, thus braking efficiency is high.Wherein, electromagnetic brake 303 can be known in the art component, main in machine driven system The effects that playing passing power and controlled motion, have it is easy to operate, response it is sensitive, use the advantages that reliable, service life is long.
For example, optionally, as shown in figure 8, the electromagnetic brake 303 includes electromagnetic drive part 3031 and is driven with the electromagnetism It moves 3031 arranged for interval of portion and is connected to the braking parts 3032 of the output shaft 3011, the electromagnetic drive part 3031 includes electromagnetism Coil and permanent magnet, when 303 dead electricity of electromagnetic brake, the electromagnetic drive part 3031 adsorbs the braking parts 3032, When the electromagnetic brake 303 must be electric, the electromagnetic drive part 3031 discharges the braking parts 3032.Pass through energy as described above It is enough that locking reliably is carried out to the output shaft 3011 of motor 301.But it's not limited to that for the disclosure, the electromagnetic brake 303 Other rational structures can also be used, as long as locking can be played to the output shaft 3011 of motor 301 or release the work(of locking Energy.Such as can also be that there is identical structure with electromechanical locks stop 1013 that first embodiment provides, and can be with It is arranged on the inside of motor 301.
Optionally, the leading screw 3061 include with the planet carrier 3022 path section that is connected of transmission and with the leading screw spiral shell Thrust is provided on the coupling part of the major diameter section that the nut 3062 of female matching mechanism coordinates, the path section and the major diameter section Bearing 307 is formed with to abut the step 3006 of 307 stationary end of thrust bearing on the housing 300.Wherein, planet Frame 3022 and the leading screw 3061 can be realized by spline fitted structure and be sequentially connected, but can also use other for example key is matched somebody with somebody The positives structures such as structure are closed to be sequentially connected to realize.Here, each leading screw 3061 can respectively by sliding bearing, Rolling bearing or anti-attrition copper sheathing 308 are supported in the housing 300, and protection is played so as to reduce the abrasion of leading screw 3061 The effect of leading screw 3061.In addition, under brake actuator off working state, between the thrust bearing 307 and the step 3006 There can be axial gap, as a result, at work, by nut 3062 to the reaction force of leading screw 3061 and can be with dynamicthrust Bearing 308 makes it abut on step 3006, from there through thrust bearing 308 is set to bear axial load, so as to limit Throwing thick stick 3061 compared with the axial displacement of housing 300 effect.
Alternatively, also optionally, as shown in fig. 7, the leading screw 3061 is small including being connected with the planet carrier 3022 transmission The company of footpath section and the major diameter section with the cooperation of nut 3062 of the feed screw nut matching mechanism, the path section and the major diameter section Thrust bearing 307 is provided in socket part point, the path section is supported on the axis hole of the housing 300 by bearing or axle sleeve 308 It is interior, and the flange of the bearing or axle sleeve 308 is connected on the end wall of the close major diameter section of the axis hole, so that institute The flange of the bearing or axle sleeve 308 can be connected to by stating 307 stationary end of thrust bearing.Here, the flange of bearing or axle sleeve 308 The end wall of the housing 300 abutted can be step 3006 as described above, and axis is born from there through setting thrust bearing 308 To load, so as to play an important role of to limit axial displacement of the leading screw 3061 compared with housing 300.
The feed screw nut matching mechanism is planet roller screw mechanism 306, and planet roller screw mechanism 306, which has, bears The advantages of load is big, strong shock resistance, high transmission accuracy, long service life.The planet roller screw mechanism 306 is by leading screw 3061 convert rotational motion is the linear motion of nut 3062.Specifically optionally, with first embodiment and the second embodiment party In the same manner, the planet roller screw mechanism 306 includes leading screw 3061, roller and nut to the planet roller screw mechanism that formula provides 3062, the roller is respectively with the leading screw 3061 and the nut 3062 thread fitting, and the roller is provided at both ends with Roller gear is provided with the internal gear or described being meshed with each roller gear on the inner peripheral surface of the nut 3062 The external gear being meshed with each roller gear is provided on the outer circumferential surface of leading screw 3061, the nut 3062 is compared with institute Stating leading screw 3061 can move along the axis direction of the output shaft 3011.Here, the roller gear at roller both ends can ensure The synchronism being driven between roller and leading screw 3061 and nut 3062, and can ensure to be pure rolling at pitch circle, thus Avoid the interference phenomenon caused by the roller skidding of part.In structure as described above, spiral shell is arranged on roller gear meshed gears On the inner peripheral surface of mother 3062, but it's not limited to that for the disclosure, for example, being not provided with internal gear on the inner peripheral surface of nut 3062 In the case of, the external gear being meshed with roller gear can be set on the correspondence outer circumferential surface of leading screw 3061.It is in addition, also optional Ground, feed screw nut matching mechanism or ball-screw nut mechanism or Mechanism of Sliding Leadscrew Nut etc..
Optionally, the housing 300 includes the first shell portion 3001 being detachably connected, and the first shell portion 3001 has Have and be formed with to accommodate the motor 301 and the electromagnetic brake 303 in the first opening and the first shell portion 3001 The first accommodating chamber 3003 and the second accommodating chamber 3004 for accommodating the planet gear reducing mechanism 302, described first accommodates Chamber 3003 is connected with second accommodating chamber 3004, and the feed screw nut matching mechanism stretches out in first opening.It in addition, can Selection of land, the housing 300 further include the second shell portion 3002 with the second opening, are formed in the second shell portion 3002 For accommodating the 3rd accommodating chamber 3005 of the feed screw nut matching mechanism, first opening and the described second opening are opposite Should, when the first shell portion 3001 and the second shell portion 3002 coordinate, second accommodating chamber 3004 and the described 3rd Accommodating chamber 3005 connects.Brake actuator as described above integrally employs modular construction, arrangement it is compact and can It is reasonably arranged in limited installation space, and with the simple and easy to maintenance effect of assembling.
Optionally, the second shell portion 3002 is floating brake tongs housing, is provided in second accommodating chamber 3004 For the inboard friction piece 3041 and outboard friction piece 3042 with 305 frictional fit of brake disc.That is, outboard friction piece 3042 is fixed In floating brake tongs housing, 3042 motion process of inboard friction piece is driven by the nut 3062 of feed screw nut matching mechanism In, after inside friction plate 3042 is contacted with brake disc 305, floating brake tongs housing is under the reaction force of nut 3062 with One housing section 3001 moves together so that the outside friction disc 3042 being fixed in caliper shell contacts brake disc 305, thus right Brake disc 305 is realized and reliably braked.And when releasing service brake, it can be by 301 dead electricity of motor so that brake It realizes the self-adjusting in gap or is inverted by motor 301 so that 3062 return of nut of feed screw nut matching mechanism, And carry out the self-adjusting of brake clearance.
The brake system of car that the 3rd embodiment of the disclosure provides includes brake, which is provided with the above-mentioned 3rd The brake actuator that embodiment provides.The brake system of car is by electromagnetic brake 303 to the output shaft 3011 of motor 301 Locking releases locking, and thus, it is possible to realize reliably parking function.Optionally, the brake includes brake disc 305, described It is provided in brake actuator for the friction plate 304 with 305 frictional fit of brake disc, the feed screw nut matching mechanism The friction plate 304 can be driven to clamp the brake disc 305.Here, the housing 300 of the brake actuator can be integrated The caliper shell of formation can also be by being assembled on caliper shell, and thus, it is possible to effectively improve the braking of automobile Response time improves braking efficiency.
The electric vehicle that the 3rd embodiment of the disclosure provides includes the vehicle braking system that above-mentioned 3rd embodiment provides System.Friction plate 304 can effectively be driven to press from both sides brake disc 305 by the brake actuator of simple structure as described above Tightly, so as to improve the braking response time of automobile, and rapid and sensitive effect is transferred with signal.
Above-mentioned middle the 3rd embodiment that the disclosure is described with reference to Fig. 7 and Fig. 8, with reference to Fig. 9 to Figure 13 specifically 4th embodiment of the bright disclosure.
As shown in Fig. 9 to Figure 13, the brake actuator that the 4th embodiment of the disclosure provides includes housing 400, holds respectively Motor 401, turbine worm reducer structure 402 and the feed screw nut matching mechanism being contained in the housing 400, the motor 401 output torque passes to the feed screw nut matching mechanism so that braking by the turbine worm reducer structure 402 Device works, and the worm screw 4021 of the turbine worm reducer structure 402 is connected with the transmission of output shaft 4011 of the motor 401, institute The leading screw 4061 of the main shaft and the feed screw nut matching mechanism of stating the turbine 4022 of turbine worm reducer structure 402 is driven phase Even.
Wherein, turbine worm reducer structure 402 is big with gearratio, bearing capacity height, stable drive, with small vibration and noise Low advantage, by the way that the output torque of motor 401 is transferred to feed screw nut matching mechanism via turbine worm reducer structure 402 Leading screw 4061 so that nut 4062 can effectively drive friction plate 404 to be clamped brake disc 405, so as to effective The braking response time of automobile is improved, there is signal to transfer rapid and sensitive effect.Here, motor 401 and turbine snail The worm screw 4021 of bar reducing gear 402, the screw of the turbine 4022 of turbine worm reducer structure 402 and feed screw nut matching mechanism It can be driven and be connected by using forms such as key connection, spline connections between 4061, machinery can also be transferred by various The positive form of torque is realized.In addition, electronic control unit can be according to system for the output torque size of motor 401 Brake force and the braking distance of pedal are moved to control.
Optionally, the brake actuator further includes for 4011 locking of output shaft to the motor 401 or releases lock Electric motor locking device only, the output shaft 4011 described in locking when the electric motor locking device dead electricity, when the electric motor locking fills The output shaft 4011 is discharged when putting electric, thereby, it is possible to be reliably achieved parking braking.Here, electric motor locking device can be with Using the structure of various reasonable, such as the structure embodied in the following two kinds embodiment may be employed.
Optionally, as shown in Figures 9 to 11, the electric motor locking device be electromagnetic brake 407, the electromagnetic brake 407 is identical with 303 structure of electromagnetic brake that the 3rd embodiment provides, i.e. the electromagnetic brake 407 includes electromagnetic drive part 4071 and with 4071 arranged for interval of electromagnetic drive part and being connected to the braking parts 4072 of the output shaft 4011, the electromagnetism drives Dynamic portion 4071 includes electromagnetic coil and permanent magnet, and when 407 dead electricity of electromagnetic brake, the electromagnetic drive part 4071 adsorbs The braking parts 4072, when the electromagnetic brake 407 must be electric, the electromagnetic drive part 4071 discharges the braking parts 4072.By the way that reliably locking can be carried out to the output shaft 4011 of motor 401 as described above.But the disclosure is not limited to This, electric motor locking device can also use other electromagnetic brakes well known in the art, mainly be risen in machine driven system The effects that passing power and controlled motion, have it is easy to operate, response it is sensitive, use the advantages that reliable, service life is long.
Alternatively, optionally, the brake actuator provided with first embodiment similarly, the electric motor locking device is set In 401 housing of motor, the electric motor locking device includes the inner attrition piece for being connected to the output shaft 4011, is connected to The outside friction disc and sticking department and electromagnetic drive part of 401 housing of motor, upon loss of power, described in the sticking department driving Electromagnetic drive part moves so that the outside friction disc and the inner attrition piece frictional fit, with output shaft 4011 described in locking, when It is electric when, the direction of the electromagnetic drive part along the latching force for overcoming the sticking department move so that the outside friction disc with it is described Inner attrition piece releases frictional fit, to discharge the output shaft 4011.For this part content in above-mentioned first embodiment party It is described in detail in the brake actuator that formula provides, in order to avoid repeating, omits herein and it is illustrated.
Optionally, the electromagnetic drive part include electromagnetic coil and annular magnet, the sticking department be spring, the motor Locking system further includes the one-way clutch for being fixed with the inner attrition piece and being connected with the output shaft 4011 transmission, the ring Shape magnet and the part inner peripheral surface of the electromagnetic coil coordinate so as to stretching compared with the electromagnetic coil, and the spring is located at The inner peripheral surface of the electromagnetic coil and it is separately fixed at the inner end of 401 housing of motor and a side end face of the annular magnet On, the inner attrition piece and the outside friction disc are located at the opposite side of the annular magnet and along the axis of the output shaft 4011 The spaced arrangement in direction, upon loss of power, the spring drive the annular magnet to promote the outside friction disc, so that described Outside friction disc and the inner attrition piece frictional fit, when obtaining electric, the annular magnet edge overcomes the elastic force of the spring Direction moves and departs from the outside friction disc, so that the outside friction disc releases frictional fit with the inner attrition piece.As a result, Parking braking function is reliably achieved by the motor 401 of structure as described above.
Optionally, which includes the telescopic device for making brake operation, under service brake, the electricity The output torque of machine 401 passes to the feed screw nut matching mechanism by the turbine worm reducer structure 402 so that braking Device works to realize service brake, and under parking braking, the extensible member of the telescopic device causes brake operation to be stayed to realize Vehicle is braked.That is, in service brake, the output torque of motor 401 is through the worm screw 4021 of turbine worm reducer structure 402 and turbine 4022 are transferred on the leading screw 4061 of feed screw nut matching mechanism so that nut 4062 can drive friction plate 404 to clamp braking Disk 405, so as to fulfill service brake.In parking braking, by the extensible member brake operation of telescopic device to realize Parking braking.Here, telescopic device can have the structure of various reasonable, such as electric cylinder.The extensible member of telescopic device can be with It directly drives friction plate 404 and clamps brake disc 405 or driven indirectly by the nut 4062 of feed screw nut matching mechanism and rub Pad 404 clamps brake disc 405, is not construed as limiting especially herein.
Optionally, as shown in figure 13, the telescopic device includes parking motor 408, planet gear reducing mechanism 403 and makees For the parking screw rod 409 of the extensible member, the parking screw rod 409 passes through the planet gear reducing mechanism 403 and the parking The transmission of parking output shaft 4081 of motor 408 is connected, and can be flexible compared with the planet gear reducing mechanism 403, described Parking screw rod 409 penetrate through be inserted into the centre bore of the leading screw 4061 and with the centre bore thread fitting, so as to driving The nut 4062 of the feed screw nut matching mechanism, under parking braking, the leading screw 4061 is locked up, the parking motor 408 output torque passes to the parking screw rod 409 by the planet gear reducing mechanism 403, so as to driving the silk The nut 4062 of thick stick nut matching mechanism.
That is, in service brake, parking motor 408 does not work, and starts motor 401 and output torque is passed through the turbine snail Bar reducing gear 402 passes to the leading screw 4061 of the feed screw nut matching mechanism, coordinates so that being driven with the leading screw 4061 Nut 4062 drive friction plate 404 clamp brake disc 405.Wherein, the gear ring 4034 of planet gear reducing mechanism 403 is fixed on shell In body 400.When carrying out parking braking when driving, the leading screw 4061 of feed screw nut matching mechanism is locked by locking pieces such as pins Only, in this case, the parking output shaft 4081 of parking motor 408 rotates forward, and outputs it torque through planet gear reducing mechanism 403 Sun gear 4031, planetary gear 4033 and planet carrier 4032 pass to parking screw rod 409, at this time due to the parking screw rod 409 The leading screw 4061 of thread fitting is fixed compared with housing 400, therefore parking screw rod 409 stretches out to abut leading screw along its axial direction The nut 4062 of nut matching mechanism, so that nut 4062 provides pressure to friction plate 404 and realizes parking braking.And When directly carrying out parking braking, parking screw rod 409 abuts nut 4062 and causes nut 4062 that friction plate 404 is driven to clamp braking Disk 405.When releasing parking braking, 409 phase of parking screw rod is inverted such that by the parking output shaft 4081 of parking motor 408 It retracts for planet gear reducing mechanism 403 and is separated with nut 4062, so as to fulfill parking braking is released.
Here, for example, parking screw rod 409 can pass through spline fitted structure and the planet carrier of planet gear reducing mechanism 403 4032, i.e. hub splines 4035 is fixed on planet carrier 4032, one end of parking screw rod 409 is formed as splined shaft, passes through spline The cooperation of axle sleeve 4035 and splined shaft and realize power transfer.Herein it should be noted that the splined shaft on parking screw rod 409 can To be moved axially compared with the hub splines 4035, so as to so that parking screw rod 409 is in the thread fitting with leading screw 4061 Under can be moved axially compared with hub splines 4035.But it's not limited to that for the disclosure, for example, planet carrier 4032 and parking spiral shell Bar 409 can realize that power transfers by positive structure, and parking is also required that while power transfers here, realizing Screw rod 409, which is arranged with respect to planet carrier 4032, to be moved axially.Furthermore it is also possible to it is formed as structure.In planet carrier The female sleeve of tool can be fixed on 4032, one end of parking screw rod 409 is formed with and the screw-internal thread fit of sleeve External screw thread, at this point, leading screw 4061 just not necessarily forms internal thread for penetrating through in the centre bore of parking screw rod 409, parking screw rod 409 need to move compared with sleeve to realize by carrying out thread fitting with sleeve, so as to squeeze nut 4062 so that inside Friction plate 4041 and outboard friction piece 4042 clamp brake disc 405, are achieved in parking braking.
Optionally, the housing 400 includes first shell portion 4001,4002 and the 3rd housing section 4003 of second shell portion, The first shell portion 4001 has the first opening and the second opening, is formed in the first shell portion 4001 for accommodating State the first accommodating chamber of parking motor 408, the turbine worm reducer structure 402 and the feed screw nut matching mechanism 4004, the second shell portion 4002 seals first opening, and the 3rd housing section 4003 has the 3rd opening and formed It is useful for accommodating the second accommodating chamber 4005 of the telescopic device, second opening is corresponding with the 3rd opening, described Extensible member is across in first accommodating chamber 4004 and second accommodating chamber 4005.Wherein, first shell portion 4001 can be with one Body is formed with floating brake tongs housing, and inboard friction piece 4041 and outboard friction piece are provided in the floating brake tongs housing 4042.Brake actuator as described above integrally employs modular construction, arrangement it is compact and can be in limited peace Dress is reasonably arranged in space, and is had and assembled simple and easy to maintenance effect.
Optionally, it is provided with thrust bearing 4010 between the turbine 4022 and the leading screw 4061.By setting thrust Bearing 4010 bears axial load, limitation leading screw 4061 compared with turbine 4022 axial displacement.
Optionally, identically with the planet roller screw mechanism that first embodiment is provided to the 3rd embodiment, it is described Feed screw nut matching mechanism is planet roller screw mechanism 406, which includes leading screw 4061, roller With nut 4062, the roller respectively with 4062 thread fitting of the leading screw 4061 and the nut, and both ends of the roller Be provided with roller gear, be provided on the inner peripheral surface of the nut 4062 internal gear that is meshed with each roller gear or The external gear being meshed with each roller gear, 4062 phase of nut are provided with described in person on the outer circumferential surface of leading screw 4061 It can be moved for the leading screw 4061 along the axis direction of the output shaft 4011.
The brake system of car that the 4th embodiment of the disclosure provides includes brake, which is provided with the above-mentioned 4th The brake actuator that embodiment provides.Optionally, the brake includes brake disc 405, is set in the brake actuator The friction plate 404 with 405 frictional fit of brake disc is useful for, the feed screw nut matching mechanism can drive the friction Piece 404 clamps the brake disc 405.Here, the caliper shell on brake can be with 400 one of housing of brake actuator It is formed or the housing 400 can be assembled on caliper shell, by the way that the output of the motor 401 of brake actuator is turned Square is transferred to the leading screw 4061 of feed screw nut matching mechanism via turbine worm reducer structure 402 so that nut 4062 can have Effect driving friction plate 404 is clamped brake disc 405, so as to effectively improve the braking response time of automobile, has letter Number transfer rapidly and sensitive effect.
The electric vehicle that the 4th embodiment of the disclosure provides includes the vehicle braking system that above-mentioned 4th embodiment provides System.Running braking function and parking braking function can be realized simultaneously by using the brake actuator of modular construction, carried The high integrability degree of vehicle, and transmission efficiency, have good mechanical performance.
Four kinds of optional embodiments of the disclosure are described in detail above in association with attached drawing, still, the disclosure is not limited to Detail in the above embodiment in the range of the technology design of the disclosure, can carry out the technical solution of the disclosure A variety of simple variants, these simple variants belong to the protection domain of the disclosure.
It is further to note that the specific technical features described in the above specific embodiments, in not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to it is various can The combination of energy no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought should equally be considered as disclosure disclosure of that.

Claims (12)

1. a kind of brake actuator, which is characterized in that the brake actuator includes housing (300), is respectively received in the housing (300) motor (301), torquematic transmission and feed screw nut matching mechanism in, the output torque of the motor (301) are led to It crosses the torquematic transmission and passes to the feed screw nut matching mechanism so that brake operation, the torquematic transmission Including planet gear reducing mechanism (302), in the planet gear reducing mechanism (302), sun gear (3021) and the motor (301) Output shaft (3011) transmission is connected, and planet carrier (3022) is connected with leading screw (3061) transmission of the feed screw nut matching mechanism, The brake actuator further includes to carry out the power output shaft of the output shaft (3011) or the planet carrier (3022) Locking or the electromagnetic brake (303) for releasing locking, the output shaft described in locking when the electromagnetic brake (303) dead electricity (3011) or the power output shaft, when the electromagnetic brake (303) it is electric when discharge the output shaft (3011) or described Power output shaft.
2. brake actuator according to claim 1, which is characterized in that the electromagnetic brake (303) is connected to described The output shaft (3011) of motor (301), for carrying out locking to the output shaft or releasing locking.
3. brake actuator according to claim 2, which is characterized in that the electromagnetic brake (303) is driven including electromagnetism Dynamic portion (3031) and with electromagnetic drive part (3031) arranged for interval and being connected to the braking parts of the output shaft (3011) (3032), the electromagnetic drive part (3031) includes electromagnetic coil and permanent magnet, when the electromagnetic brake (303) dead electricity, The electromagnetic drive part (3031) adsorbs the braking parts (3032), when the electromagnetic brake (303) must be electric, the electromagnetism Driving portion (3031) discharges the braking parts (3032).
4. brake actuator according to claim 1, which is characterized in that the leading screw (3061) includes and the planet carrier (3022) the connected path section of transmission and the major diameter section with nut (3062) cooperation of the feed screw nut matching mechanism are described small Thrust bearing (307) is provided on the coupling part of footpath section and the major diameter section, is formed with to abut on the housing (300) The step (3006) of thrust bearing (307) stationary end.
5. brake actuator according to claim 1, which is characterized in that the leading screw (3061) includes and the planet carrier (3022) the connected path section of transmission and the major diameter section with nut (3062) cooperation of the feed screw nut matching mechanism are described small Thrust bearing (307) is provided on the coupling part of footpath section and the major diameter section, the path section passes through bearing or axle sleeve (308) It is supported in the axis hole of the housing (300), and the flange of the bearing or axle sleeve (308) is connected to the close of the axis hole On the end wall of the major diameter section, so that the thrust bearing (307) stationary end can be connected to the bearing or axle sleeve (308) Flange.
6. brake actuator according to claim 1, which is characterized in that the feed screw nut matching mechanism is planetary roller Screw mechanism (306), the planet roller screw mechanism (306) include leading screw (3061), roller and nut (3062), the rolling Column is respectively with the leading screw (3061) and the nut (3062) thread fitting, and the roller is provided at both ends with roller tooth It takes turns, the internal gear being meshed with each roller gear or the leading screw is provided on the inner peripheral surface of the nut (3062) (3061) external gear being meshed with each roller gear is provided on outer circumferential surface, the nut (3062) is compared with institute Stating leading screw (3061) can move along the axis direction of the output shaft (3011).
7. brake actuator according to claim 1, which is characterized in that the housing (300) includes what is be detachably connected First shell portion (3001), the first shell portion (3001), which has in the first opening and the first shell portion (3001), to be formed It is useful for accommodating the first accommodating chamber (3003) of the motor (301) and the electromagnetic brake (303) and described for accommodating The second accommodating chamber (3004) of planet gear reducing mechanism (302), first accommodating chamber (3003) and second accommodating chamber (3004) connect, the feed screw nut matching mechanism stretches out in first opening.
8. brake actuator according to claim 7, which is characterized in that the housing (300) further includes opens with second The second shell portion (3002) of mouth, the second shell portion (3004) is interior to be formed with to accommodate the feed screw nut matching mechanism The 3rd accommodating chamber (3005), it is described first be open, the first shell portion (3001) and institute corresponding with the described second opening When stating second shell portion (3002) cooperation, second accommodating chamber (3004) connects with the 3rd accommodating chamber (3005).
9. brake actuator according to claim 8, which is characterized in that the second shell portion (3002) is floating brake Housing is clamped, is provided in second accommodating chamber (3004) for the inboard friction piece (3041) with brake disc frictional fit and outside Side friction plate (3042).
10. a kind of brake system of car, which is characterized in that the brake system of car includes brake, which is provided with root According to the brake actuator any one of claim 1-9.
11. brake system of car according to claim 10, which is characterized in that the brake includes brake disc (305), It is provided in the brake actuator for the friction plate (304) with the brake disc (305) frictional fit, the feed screw nut Matching mechanism can drive the friction plate (304) to clamp the brake disc (305).
12. a kind of electric vehicle, which is characterized in that the electric vehicle includes the vehicle braking according to claim 10 or 11 System.
CN201611045162.2A 2016-11-24 2016-11-24 Brake actuator, automobile brake system and electric automobile Active CN108105293B (en)

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CN110254197A (en) * 2019-05-17 2019-09-20 北京理工大学 A kind of double-motor driving device and driving method of disc type electromechanical brake
CN110410438A (en) * 2019-07-29 2019-11-05 中国科学院长春光学精密机械与物理研究所 A kind of cooperation robot and servo motor
CN110857084A (en) * 2018-08-22 2020-03-03 瀚德万安(上海)电控制动系统有限公司 Method and device for diagnosing electromagnetic brake and electromechanical brake system
CN111221367A (en) * 2020-03-12 2020-06-02 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
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CN111619535A (en) * 2020-06-02 2020-09-04 芜湖伯特利汽车安全系统股份有限公司 Electro-hydraulic brake caliper and vehicle brake system
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CN112628307A (en) * 2019-10-07 2021-04-09 威伯科全球有限公司 Disk brake with an electromechanical actuator, in particular an electromechanical parking brake actuator
CN113306537A (en) * 2021-07-09 2021-08-27 中国农业大学 Motor-driven air pressure regulating valve and regulating and controlling method thereof
CN113800227A (en) * 2021-09-30 2021-12-17 兰州万里航空机电有限责任公司 Rotary executing device of fixed-force lock
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CN108791264A (en) * 2018-06-11 2018-11-13 浙江亚太机电股份有限公司 Electromechanical brake
CN108791264B (en) * 2018-06-11 2023-08-11 浙江亚太机电股份有限公司 Electromechanical brake
CN108799369A (en) * 2018-06-11 2018-11-13 浙江亚太机电股份有限公司 Electromagnetic-type electronic mechanical brake
CN110857084A (en) * 2018-08-22 2020-03-03 瀚德万安(上海)电控制动系统有限公司 Method and device for diagnosing electromagnetic brake and electromechanical brake system
CN111348070B (en) * 2018-12-21 2021-07-09 比亚迪股份有限公司 Brake, rail transit braking system and rail transit system
CN111348070A (en) * 2018-12-21 2020-06-30 比亚迪股份有限公司 Brake, rail transit braking system and rail transit system
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CN109649363A (en) * 2019-01-17 2019-04-19 吉林大学 A kind of electric mechanical liquid braking device, brake control method and electro-hydraulic line control brake system
CN110254197A (en) * 2019-05-17 2019-09-20 北京理工大学 A kind of double-motor driving device and driving method of disc type electromechanical brake
CN112240361A (en) * 2019-07-16 2021-01-19 现代摩比斯株式会社 Vehicle parking brake device
CN112240361B (en) * 2019-07-16 2022-05-31 现代摩比斯株式会社 Vehicle parking brake device
CN110410438A (en) * 2019-07-29 2019-11-05 中国科学院长春光学精密机械与物理研究所 A kind of cooperation robot and servo motor
CN112628307A (en) * 2019-10-07 2021-04-09 威伯科全球有限公司 Disk brake with an electromechanical actuator, in particular an electromechanical parking brake actuator
CN111221367A (en) * 2020-03-12 2020-06-02 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
CN111221367B (en) * 2020-03-12 2021-08-17 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
CN111619535A (en) * 2020-06-02 2020-09-04 芜湖伯特利汽车安全系统股份有限公司 Electro-hydraulic brake caliper and vehicle brake system
CN111619535B (en) * 2020-06-02 2024-04-12 芜湖伯特利汽车安全系统股份有限公司 Electrohydraulic brake caliper and vehicle brake system
CN113306537B (en) * 2021-07-09 2022-02-11 中国农业大学 Motor-driven air pressure regulating valve and regulating and controlling method thereof
CN113306537A (en) * 2021-07-09 2021-08-27 中国农业大学 Motor-driven air pressure regulating valve and regulating and controlling method thereof
CN113800227A (en) * 2021-09-30 2021-12-17 兰州万里航空机电有限责任公司 Rotary executing device of fixed-force lock
CN113800227B (en) * 2021-09-30 2023-03-28 兰州万里航空机电有限责任公司 Rotary executing device of fixed-force lock
CN113933073A (en) * 2021-12-16 2022-01-14 苏州英特模汽车科技有限公司 Friction force simulation device
US11761501B2 (en) 2021-12-16 2023-09-19 Suzhou ITI Motor Technology Co., Ltd. Friction simulating device
CN114483836A (en) * 2021-12-28 2022-05-13 中国航天空气动力技术研究院 Layout of dual-redundancy actuator of electric brake device
CN115320564A (en) * 2022-08-31 2022-11-11 重庆长安汽车股份有限公司 Electronic mechanical brake caliper for automobile, brake system and automobile

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