CN103486163A - Piezoelectric type brake executing mechanism of electronic mechanical brake system of vehicle - Google Patents
Piezoelectric type brake executing mechanism of electronic mechanical brake system of vehicle Download PDFInfo
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- CN103486163A CN103486163A CN201310453495.9A CN201310453495A CN103486163A CN 103486163 A CN103486163 A CN 103486163A CN 201310453495 A CN201310453495 A CN 201310453495A CN 103486163 A CN103486163 A CN 103486163A
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Abstract
The invention discloses a piezoelectric type brake executing mechanism of an electronic mechanical brake system of a vehicle. The piezoelectric type brake executing mechanism comprises a brake caliper body, a shell, a piston, a brake piston component, a return spring, a displacement amplifying mechanism, a piezoelectric element and a friction block. The brake piston component is installed on the brake caliper body in a sliding mode, the piston and the piezoelectric element are arranged in the shell, one side of the piston abuts against the piezoelectric element, the displacement amplifying mechanism is arranged between the other side of the piston and the brake piston component, one end of the return spring abuts against the brake caliper body, and the other end of the return spring abuts against the brake piston component. The displacement amplifying mechanism comprises a displacement amplifying lever, a protrusion point, a fixed hinge, a base and the like, on the basis of the lever principle, the small displacement amount of the piezoelectric element is amplified, and the requirement of the friction block for the movable displacement is met. An electric field value exerted by the piezoelectric element is adjusted to achieve the control over brake force of wheels, and the dynamic response performance and the brake performance of the brake system can be improved.
Description
Technical field
The present invention relates to a kind of vehicle electric mechanical braking system piezoelectricity type brake actuator, belong to the vehicle brake technology field.
Background technique
Braking system is one of important component part of automobile, is directly connected to comprehensive vehicle performance and the security of the lives and property, comprises Service Brake, Parking Brake and auxiliary brake.Service Brake is the automobile primary break, generally adopts drum-type or disc type friction catch mode, and the kinetic energy of automobile, potential energy are converted into to heat energy by friction, realizes the purpose of car deceleration or braking.Although conventional hydraulic formula, pneumatic-typed Service Brake can meet the requirements of existing brake legislation, exist speed of response slowly, can not active adjustment, be not easy to the deficiency such as integrated control, be not suitable for the demand for development of current automobile.
Electromechanical braking system (EMB) is a kind of in line control brake system, by brake petal module, electronic control module, brake actuator etc., formed, hydraulic pressure in the traditional braking system, air pressure parts have been cancelled, take electric wire as information transmission media, electric driving element is brake actuator, control unit, according to brake pedal position sensor signal identification of driver braking intention, is controlled the brake actuator action, realizes the control to wheel braking force.But the EMB system have do not brake medium, do not need vacuum booster unit, reaction active adjustment and be easy to the characteristics such as integrated control fast, made up the deficiency on traditional braking system architecture principle, representing the development trend of running break.At present, the brake actuator of EMB system generally by drive motor, slow down to increase and turn round mechanism, movement conversion mechanism etc. and form, drive motor increases through slowing down turns round mechanism's increase torque, to rotatablely move and be converted to straight line motion by movement conversion mechanism again, promote brake pad and press to brake disc, realize wheel braking.Motor type brake actuator structure is comparatively complicated, and, because drive motor works under the environment of " stall ", has affected the service behaviour of EMB system.
Summary of the invention
Technical problem to be solved by this invention is the defect that overcomes prior art, and a kind of vehicle electric mechanical braking system piezoelectricity type brake actuator is provided, and it can improve dynamic response performance and the braking ability of braking system, realizes the control to wheel braking force.
The present invention solves the problems of the technologies described above the technological scheme of taking: a kind of vehicle electric mechanical braking system piezoelectricity type brake actuator, it comprises braking clamp body, housing, piston, the brake piston assembly, return spring, displacement amplifying mechanism, piezoelectric element and lay respectively at the brake disc both sides of vehicle and coordinates the brake pad of braking with brake disc, the brake piston assembly is slidably mounted on braking clamp body, piston and piezoelectric element are positioned at housing, one side and the piezoelectric element of piston connect, thereby the axial displacement that when between the opposite side that described displacement amplifying mechanism is arranged on piston and brake piston assembly, with convenient piezoelectric element, applying external electric field and be created in mechanically deformation on the piston axial direction and form the axial displacement that the party makes progress, displacement amplifying mechanism changes it into brake piston assembly makes brake disc contact with brake pad to be coordinated to produce and brakes, one end of described return spring is connected on braking clamp body, the other end is connected on the brake piston assembly and removes external electric field with convenient piezoelectric element, mechanically deformation on the piston axial direction offers the axial reverse push power of brake piston assembly so that brake piston assembly return and brake disc and brake pad are separated so that brake disappearance while disappearing.
Further, described displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever, fixed base and salient point, fixed base is fixedly connected in housing, the fixed end that lever is amplified in displacement is hinged on fixed base so that its free end rotates around hinged place, described salient point is arranged on corresponding displacement and amplifies on the free end of lever, and this salient point and the displacement of adjacent displacement amplifying unit are amplified the position between salient point and hinged place on lever and are contacted, salient point and brake piston assembly that the displacement of the displacement amplifying unit of described final stage is amplified on lever connect, the displacement that the opposite side of described piston is connected to first order displacement amplifying unit is amplified on lever on the position between salient point and hinged place.
Further, described displacement amplifying mechanism comprises intermediate piston, fulcrum cells and two-stage displacement amplifying unit at least, fulcrum cells comprises fulcrum fixed base and fulcrum displacement amplification lever, the middle part that lever is amplified in the fulcrum displacement is hinged on the fulcrum fixed base, every grade of displacement amplifying unit comprises displacement amplification lever, fixed base and salient point, fixed base is fixedly connected in housing, the fixed end that lever is amplified in displacement is hinged on fixed base so that its free end rotates around hinged place, described salient point is arranged on corresponding displacement and amplifies on the free end of lever, and this salient point and the displacement of adjacent displacement amplifying unit are amplified the position between salient point and hinged place on lever and are contacted, the salient point that the displacement of the displacement amplifying unit of described final stage is amplified on lever connects by intermediate piston and an end of fulcrum displacement amplification lever, the other end and brake piston assembly that lever is amplified in the fulcrum displacement connect, the displacement that the opposite side of described piston is connected to first order displacement amplifying unit is amplified on lever on the position between salient point and hinged place.
Further, described brake piston assembly comprises brake piston and brake piston bar, one end and the displacement amplifying mechanism of brake piston bar are flexibly connected mutually, and the other end and brake piston are fixedly connected, described return spring be sleeved on the brake piston bar and with its butt.
Further, it is main by piezoceramics layer and be respectively formed at the positive electrode layer of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer forms that described piezoelectric element has many groups, and positive electrode layer and positive electrode layer are electrically connected successively.
Further, on described housing, be provided with attachment plug, described positive electrode layer is electrically connected successively afterwards and is connected with attachment plug with positive electrode layer.
Further, described housing is provided with an air-cooled or water-cooled power converter.
Further, described braking clamp body is floating caliper type disc, and described displacement amplifying unit is two.
After having adopted technique scheme, piezoelectric element of the present invention applies electric field on the piezoelectric constant polarised direction, at electric field action lower piezoelectric pottery, mechanically deformation can occur or produce mechanical stress; When external electric field removes, these distortion or stress also can disappear thereupon, and the amount of deformation that piezoelectric constant is produced by electric field action or stress value are directly proportional to the size of electric field.Supply with magnitude of voltage or the power supply pulse duty factor of piezoelectric element by adjusting, by displacement amplifying mechanism, the little displacement amount of piston is zoomed into to the big displacement quantity of brake piston assembly, drive the brake piston action, realize the accurate control to wheel braking force.Vehicle electric mechanical braking system piezoelectricity type brake actuator based on inverse piezoelectric effect has high dynamic response performance, can increase frequency and control accuracy that retardation pressure is regulated, improves dynamic response performance and the braking ability of EMB system.The present invention can avoid motor type brake actuator " stall " phenomenon, have simple in structure, be convenient to install, high reliability.
The accompanying drawing explanation
The first embodiment's that Fig. 1 is vehicle electric mechanical braking system piezoelectricity type brake actuator of the present invention structural representation;
The second embodiment's that Fig. 2 is vehicle electric mechanical braking system piezoelectricity type brake actuator of the present invention structural representation.
Embodiment
For content of the present invention more easily is expressly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
Embodiment one
As shown in Figure 1, a kind of vehicle electric mechanical braking system piezoelectricity type brake actuator, comprise braking clamp body 4, housing 17, piston 16, brake piston assembly 5, return spring 3, displacement amplifying mechanism, piezoelectric element 18 and lay respectively at brake disc 1 both sides of vehicle and coordinates the brake pad 2 of braking with brake disc 1, brake piston assembly 5 is slidably mounted on braking clamp body 4, piston 16 and piezoelectric element 18 are positioned at housing 17, one side and the piezoelectric element 18 of piston 16 connect, thereby the axial displacement that when between the opposite side that displacement amplifying mechanism is arranged on piston 16 and brake piston assembly 5, with convenient piezoelectric element 18, applying external electric field and be created in mechanically deformation on piston 16 axial directions and form the axial displacement that the party makes progress, displacement amplifying mechanism changes it into brake piston assembly 5 makes brake disc 1 contact with brake pad 2 to be coordinated to produce and brakes, one end of return spring 3 is connected on braking clamp body 4, the other end is connected on brake piston assembly 5 and removes external electric field with convenient piezoelectric element 18, mechanically deformation on piston 16 axial directions offers the axial reverse push power of brake piston assembly 5 so that brake piston assembly 5 returns and brake disc 1 and brake pad 2 are separated so that brake disappearance while disappearing.
As shown in Figure 1, displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever 15, fixed base 11 and salient point 6, fixed base 11 is fixedly connected in housing 17, the fixed end that lever 15 is amplified in displacement is hinged on fixed base 11 so that its free end rotates around hinged place by fixed hinge 10, salient point 6 is arranged on corresponding displacement and amplifies on the free end of lever 15, and this salient point 6 and the displacement of adjacent displacement amplifying unit are amplified the position between salient point 6 and hinged place on lever 15 and are contacted, the salient point 6 that the displacement of the displacement amplifying unit of final stage is amplified on lever 15 connects with brake piston assembly 5, the displacement that the opposite side of piston 16 is connected to first order displacement amplifying unit is amplified on lever 15 on the position between salient point 6 and hinged place.The displacement amplifying unit of Fig. 1 is two, but is not limited to this.
As shown in Figure 1, return spring 3 is cylindroid helicalcoil compression spring, is installed between brake piston assembly 5 and braking clamp body 4, original state bears certain compressive force, brake piston assembly 5 is depressed into to left-most position, brake pad 2 is separated with brake disc 1, on brake disc 1, there is no braking force.
Brake piston assembly 5 comprises brake piston 5-1 and brake piston bar 20, and an end and the displacement amplifying mechanism of brake piston bar 20 are flexibly connected mutually, and the other end and brake piston 5-1 are fixedly connected, return spring 3 be sleeved on brake piston bar 20 and with its butt.
It is main by piezoceramics layer and be respectively formed at the positive electrode layer of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer forms that piezoelectric element 18 has many groups, and positive electrode layer and positive electrode layer are electrically connected successively.Be provided with attachment plug 19 on housing 17, positive electrode layer is electrically connected successively afterwards and is connected with attachment plug 19 with positive electrode layer.Piezoelectric element 18 is supplied with the voltage of 0 ~ 600 volt as required.The piezoelectric element 18 of general 3 centimeter length can comprise the piezoelectric ceramic thin sheet that 300 multi-layered thickness are 80 microns.The power supply voltage of piezoelectric element 18 is by attachment plug 19 accesses, and DC low-voltage to the transformation of DC high voltage is completed by the DC-DC booster converter.
When piezoelectric element 18 obtains electric generation mechanically deformation, output loads overcomes return spring 3 elastic force promotion pistons 16 and moves to the right, after by displacement amplifying mechanism, to piston, 16 displacements are amplified, amplified by the displacement of the displacement amplifying unit of final stage that lever 15 promotes brake piston bars 20 and brake piston 5-1 moves to the right, brake pad 2 is contacted with brake disc 1, on brake disc 1, produce braking force.The braking force size produced changes and changes with the magnitude of voltage applied on piezoelectric element 18.When piezoelectric element 18 dead electricity, piezoelectric element 18 distortion disappear, under the effect of return spring 3, brake piston bar 20 and brake piston 5-1 move to the left, brake pad 2 separates with brake disc 1, and the braking force on brake disc 1 disappears, and amplifies lever 15 by the displacement of first order displacement amplifying unit simultaneously and promotes the mobile to the left return of piston 16, magnitude of voltage or power supply pulse duty factor by applying on successive adjusting piezoelectric element 18, can realize the accurate control to wheel braking force.
Housing 17 is provided with an air-cooled or water-cooled power converter, controls the temperature of this brake actuator, reduces the impact of temperature on this brake actuator.
Housing 17 can be connected to one according to rational method with braking clamp body 4.
The all parts of this piezoelectricity type brake actuator can be made into an integral body, a piezoelectricity type brake actuator is installed on the appropriate location of each wheel brake, relatively independent between them, can give full play to the coefficient of attachment of each wheel, if and one of them brake actuator goes wrong, other several brake actuators still can work, and have improved braking ability and the Safety performance of vehicle.
Embodiment two
As shown in Figure 2, a kind of vehicle electric mechanical braking system piezoelectricity type brake actuator, comprise braking clamp body 4, housing 17, piston 16, brake piston assembly 5, return spring 3, displacement amplifying mechanism, piezoelectric element 18 and lay respectively at brake disc 1 both sides of vehicle and coordinates the brake pad 2 of braking with brake disc 1, brake piston assembly 5 is slidably mounted on braking clamp body 4, piston 16 and piezoelectric element 18 are positioned at housing 17, one side and the piezoelectric element 18 of piston 16 connect, thereby the axial displacement that when between the opposite side that described displacement amplifying mechanism is arranged on piston 16 and brake piston assembly 5, with convenient piezoelectric element 18, applying external electric field and be created in mechanically deformation on piston 16 axial directions and form the axial displacement that the party makes progress, displacement amplifying mechanism changes it into brake piston assembly 5 makes brake disc 1 contact with brake pad 2 to be coordinated to produce and brakes, one end of return spring 3 is connected on braking clamp body 4, the other end is connected on brake piston assembly 5 and removes external electric field with convenient piezoelectric element 18, mechanically deformation on piston 16 axial directions offers the axial reverse push power of brake piston assembly 5 so that brake piston assembly 5 returns and brake disc 1 and brake pad 2 are separated so that brake disappearance while disappearing.
As shown in Figure 2, housing 13 is fixedly connected on the top of braking clamp body 4, and on housing 13 and braking clamp body 4, rear end cover 9 is installed, displacement amplifying mechanism comprises intermediate piston 12, fulcrum cells and two-stage displacement amplifying unit at least, fulcrum cells comprises fulcrum fixed base 8 and fulcrum displacement amplification lever 7, the middle part that lever 7 is amplified in the fulcrum displacement is hinged on fulcrum fixed base 8 by a fixed hinge 10, fulcrum fixed base 8 is fixed on rear end cover 9, every grade of displacement amplifying unit comprises displacement amplification lever 15, fixed base 11 and salient point 6, fixed base 8 is fixedly connected in housing 17, the fixed end that lever 15 is amplified in displacement is hinged on fixed base 8 so that its free end rotates around hinged place by another fixed hinge 10, salient point 6 is arranged on corresponding displacement and amplifies on the free end of lever 15, and this salient point 6 and the displacement of adjacent displacement amplifying unit are amplified the position between salient point 6 and hinged place on lever and are contacted, the displacement of the displacement amplifying unit of final stage is amplified the end that the salient point 6 on lever 15 amplifies lever 7 by intermediate piston 12 and fulcrum displacement and is connected, the other end and brake piston assembly 5 that lever 7 is amplified in the fulcrum displacement connect, the displacement that the opposite side of piston 16 is connected to first order displacement amplifying unit is amplified on lever 15 on the position between salient point 6 and hinged place.The displacement amplifying unit of Fig. 2 is two, but is not limited to this.
It is main by piezoceramics layer and be respectively formed at the positive electrode layer of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer forms that piezoelectric element 18 has many groups, and positive electrode layer and positive electrode layer are electrically connected successively.
Be provided with attachment plug 19 on housing 17, positive electrode layer is electrically connected successively afterwards and is connected with attachment plug 19 with positive electrode layer.The power supply voltage of piezoelectric element 18 is by attachment plug 19 accesses, and DC low-voltage to the transformation of DC high voltage is completed by the DC-DC booster converter.
When piezoelectric element 18 obtains electric generation mechanically deformation, output loads overcomes return spring 3 elastic force promotion pistons 16 and moves to the left, after by displacement amplifying mechanism, to piston, 16 displacements are amplified, amplifying lever 7 promotion brake piston assemblies 5 by the fulcrum displacement moves to the right, brake pad 2 is contacted with brake disc 1, on brake disc 1, produce braking force.The braking force size produced changes and changes with the magnitude of voltage applied on piezoelectric element 18.When piezoelectric element 18 dead electricity, piezoelectric element 18 distortion disappear, under the effect of return spring 3, brake piston assembly 5 moves to the left, brake pad 2 separates with brake disc 1, and the braking force on brake disc 1 disappears, and amplifies lever 15 by the displacement of first order displacement amplifying unit simultaneously and promotes piston 16 mobile return to the right, magnitude of voltage or power supply pulse duty factor by applying on successive adjusting piezoelectric element 18, can realize the accurate control to wheel braking force.
When piezoelectric element 18 obtains electric generation mechanically deformation, after displacement amplification lever 15, intermediate piston 12 and fulcrum displacement amplification lever 7 that the little displacement amount of piston 16 amplifies lever 15, second level displacement amplifying unit through the displacement of first order displacement amplifying unit, be enlarged into the big displacement quantity of brake piston assembly 5, promote brake pad 2 and press to brake disc 1, realize wheel braking.When piezoelectric element 18 dead electricity, piezoelectric element 18 distortion disappear, under the effect of return spring 3, brake piston assembly 5 moves to the left, brake pad 2 separates with brake disc 1, braking force on brake disc 1 disappears, and lever 15 is amplified in the displacement that brake piston 5 amplifies lever 15 and first order displacement amplifying unit through the displacement of fulcrum displacement amplification lever 7, intermediate piston 12, second level displacement amplifying unit simultaneously, promotes piston 16 mobile return to the right.
Housing 17 is provided with an air-cooled or water-cooled power converter, controls the temperature of this brake actuator, reduces the impact of temperature on this brake actuator.
Housing 17 can be connected to one according to rational method with braking clamp body 4.
The all parts of this piezoelectricity type brake actuator is made into an integral body, this piezoelectricity type brake actuator is installed on the appropriate location of each wheel brake, relatively independent between them, can give full play to the coefficient of attachment of each wheel, if and one of them brake actuator goes wrong, other several brake actuators still can work, and have improved braking ability and the Safety performance of vehicle.
Above-described specific embodiment; technical problem, technological scheme and beneficial effect that the present invention is solved further describe; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a vehicle electric mechanical braking system piezoelectricity type brake actuator, it is characterized in that: it comprises braking clamp body (4), housing (17), piston (16), brake piston assembly (5), return spring (3), displacement amplifying mechanism, piezoelectric element (18) and lay respectively at brake disc (1) both sides of vehicle and with brake disc (1), coordinate the braking brake pad (2), brake piston assembly (5) is slidably mounted on braking clamp body (4), piston (16) and piezoelectric element (18) are positioned at housing (17), one side of piston (16) and piezoelectric element (18) connect, apply with convenient piezoelectric element (18) that external electric field is created in piston (16) between the opposite side that described displacement amplifying mechanism is arranged on piston (16) and brake piston assembly (5) thus the axial displacement that when mechanically deformation on axial direction forms the axial displacement that the party makes progress, displacement amplifying mechanism changes it into brake piston assembly (5) makes brake disc (1) contact with brake pad (2) to be coordinated to produce and brakes, one end of described return spring (3) is connected on braking clamp body (4), it is upper with convenient piezoelectric element (18) removal external electric field that the other end is connected to brake piston assembly (5), mechanically deformation on piston (16) axial direction offers the axial reverse push power of brake piston assembly (5) so that brake piston assembly (5) return and brake disc (1) and brake pad (2) are separated so that brake disappearance while disappearing.
2. vehicle electric mechanical braking system piezoelectricity type brake actuator according to claim 1, it is characterized in that: described displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever (15), fixed base (11) and salient point (6), fixed base (11) is fixedly connected in housing (17), the fixed end that lever (15) is amplified in displacement is hinged on fixed base (11) above so that its free end rotates around hinged place, described salient point (6) is arranged on corresponding displacement and amplifies on the free end of lever (15), and this salient point (6) contacts with the position that the displacement of adjacent displacement amplifying unit is amplified between the upper salient point (6) of lever (15) and hinged place, the salient point (6) that the displacement of the displacement amplifying unit of described final stage is amplified on lever (15) connects with brake piston assembly (5), the opposite side of described piston (16) is connected to the displacement of first order displacement amplifying unit and amplifies on the position between the upper salient point (6) of lever (15) and hinged place.
3. vehicle electric mechanical braking system piezoelectricity type brake actuator according to claim 1, it is characterized in that: described displacement amplifying mechanism comprises intermediate piston (12), fulcrum cells and two-stage displacement amplifying unit at least, fulcrum cells comprises fulcrum fixed base (8) and fulcrum displacement amplification lever (7), the middle part that lever (7) is amplified in the fulcrum displacement is hinged on fulcrum fixed base (8), every grade of displacement amplifying unit comprises displacement amplification lever (15), fixed base (11) and salient point (6), fixed base (8) is fixedly connected in housing (17), the fixed end that lever (15) is amplified in displacement is hinged on fixed base (8) above so that its free end rotates around hinged place, described salient point (6) is arranged on corresponding displacement and amplifies on the free end of lever (15), and this salient point (6) and the displacement of adjacent displacement amplifying unit are amplified the position between salient point (6) and hinged place on lever and are contacted, the salient point (6) that the displacement of the displacement amplifying unit of described final stage is amplified on lever (15) connects by intermediate piston (12) and an end of fulcrum displacement amplification lever (7), the other end and brake piston assembly (5) that lever (7) is amplified in the fulcrum displacement connect, the opposite side of described piston (16) is connected to the displacement of first order displacement amplifying unit and amplifies on the position between the upper salient point (6) of lever (15) and hinged place.
4. vehicle electric mechanical braking system piezoelectricity type brake actuator according to claim 2, it is characterized in that: described brake piston assembly (5) comprises brake piston (5-1) and brake piston bar (20), one end of brake piston bar (20) is flexibly connected mutually with displacement amplifying mechanism, the other end and brake piston (5-1) are fixedly connected, described return spring (3) be sleeved on brake piston bar (20) upper and with its butt.
5. according to the described vehicle electric mechanical braking system of any one in claim 1 to 4 piezoelectricity type brake actuator, it is characterized in that: it is main by piezoceramics layer and be respectively formed at the positive electrode layer of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer forms that described piezoelectric element (18) has many groups, and positive electrode layer and positive electrode layer are electrically connected successively.
6. vehicle electric mechanical braking system piezoelectricity type brake actuator according to claim 5, it is characterized in that: be provided with attachment plug (19) on described housing (17), described positive electrode layer is electrically connected successively afterwards and is connected with attachment plug (19) with positive electrode layer.
7. vehicle electric mechanical braking system piezoelectricity type brake actuator according to claim 5, it is characterized in that: described housing (17) is provided with an air-cooled or water-cooled power converter.
8. according to the described vehicle electric mechanical braking system of claim 2 or 3 piezoelectricity type brake actuator, it is characterized in that: described displacement amplifying unit is two.
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| CN201310453495.9A CN103486163B (en) | 2013-09-29 | 2013-09-29 | Vehicle electric mechanical braking system piezoelectric type brake actuator |
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| CN201310453495.9A CN103486163B (en) | 2013-09-29 | 2013-09-29 | Vehicle electric mechanical braking system piezoelectric type brake actuator |
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| CN103486163B CN103486163B (en) | 2016-06-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994159A (en) * | 2014-05-06 | 2014-08-20 | 南京航空航天大学 | Laminating type piezoelectric brake adopting flexible amplifying structure and working method thereof |
| CN107117143A (en) * | 2017-04-07 | 2017-09-01 | 江苏理工学院 | A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism |
| CN107117144A (en) * | 2017-04-07 | 2017-09-01 | 江苏理工学院 | A kind of brake feel piezoelectric element adjustable type brake treadle mechanism |
| CN107554503A (en) * | 2017-07-28 | 2018-01-09 | 江苏理工学院 | Driving type piezoelectric actuator brake |
| CN111441233A (en) * | 2020-03-08 | 2020-07-24 | 武汉理工大学 | Voltage-driven friction energy dissipation device for bridge structure |
| CN112238842A (en) * | 2020-10-26 | 2021-01-19 | 合肥工业大学 | Brake system for unmanned vehicle |
| WO2022040915A1 (en) * | 2020-08-25 | 2022-03-03 | 西门子（中国）有限公司 | Joint assembly and robot |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600733A1 (en) * | 1985-01-17 | 1986-07-17 | Nippon Soken, Inc., Nishio, Aichi | CONTROL DEVICE FOR VEHICLE BRAKES |
| US4762300A (en) * | 1985-02-19 | 1988-08-09 | Nippondenso Co., Ltd. | Control valve for controlling fluid passage |
| JPH0257731A (en) * | 1988-08-19 | 1990-02-27 | Tokico Ltd | Brake device |
| JPH08177900A (en) * | 1994-12-26 | 1996-07-12 | Asmo Co Ltd | Brake device |
| CN1211691A (en) * | 1997-09-12 | 1999-03-24 | 陈坤 | Mechanical disc type brake and clutch |
| DE19818156A1 (en) * | 1998-04-23 | 1999-10-28 | Bosch Gmbh Robert | Piezohydraulic wheel brake device for vehicle hydraulic brake system |
| US20020112927A1 (en) * | 2001-02-19 | 2002-08-22 | Meritor Heavy Vehicle Systems, Llc | Brake adjuster |
| CN102758946A (en) * | 2012-07-22 | 2012-10-31 | 徐凯敏 | Piezoelectric-type electronic expansion valve |
| CN203500336U (en) * | 2013-09-29 | 2014-03-26 | 江苏理工学院 | Piezoelectric type braking executing mechanism of vehicle electronic mechanical braking system |
-
2013
- 2013-09-29 CN CN201310453495.9A patent/CN103486163B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600733A1 (en) * | 1985-01-17 | 1986-07-17 | Nippon Soken, Inc., Nishio, Aichi | CONTROL DEVICE FOR VEHICLE BRAKES |
| US4762300A (en) * | 1985-02-19 | 1988-08-09 | Nippondenso Co., Ltd. | Control valve for controlling fluid passage |
| JPH0257731A (en) * | 1988-08-19 | 1990-02-27 | Tokico Ltd | Brake device |
| JPH08177900A (en) * | 1994-12-26 | 1996-07-12 | Asmo Co Ltd | Brake device |
| CN1211691A (en) * | 1997-09-12 | 1999-03-24 | 陈坤 | Mechanical disc type brake and clutch |
| DE19818156A1 (en) * | 1998-04-23 | 1999-10-28 | Bosch Gmbh Robert | Piezohydraulic wheel brake device for vehicle hydraulic brake system |
| US20020112927A1 (en) * | 2001-02-19 | 2002-08-22 | Meritor Heavy Vehicle Systems, Llc | Brake adjuster |
| CN102758946A (en) * | 2012-07-22 | 2012-10-31 | 徐凯敏 | Piezoelectric-type electronic expansion valve |
| CN203500336U (en) * | 2013-09-29 | 2014-03-26 | 江苏理工学院 | Piezoelectric type braking executing mechanism of vehicle electronic mechanical braking system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994159A (en) * | 2014-05-06 | 2014-08-20 | 南京航空航天大学 | Laminating type piezoelectric brake adopting flexible amplifying structure and working method thereof |
| CN107117143A (en) * | 2017-04-07 | 2017-09-01 | 江苏理工学院 | A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism |
| CN107117144A (en) * | 2017-04-07 | 2017-09-01 | 江苏理工学院 | A kind of brake feel piezoelectric element adjustable type brake treadle mechanism |
| CN107117144B (en) * | 2017-04-07 | 2019-09-10 | 江苏理工学院 | A kind of brake feel piezoelectric element adjustable type brake treadle mechanism |
| CN107554503A (en) * | 2017-07-28 | 2018-01-09 | 江苏理工学院 | Driving type piezoelectric actuator brake |
| CN111441233A (en) * | 2020-03-08 | 2020-07-24 | 武汉理工大学 | Voltage-driven friction energy dissipation device for bridge structure |
| CN111441233B (en) * | 2020-03-08 | 2021-06-11 | 武汉理工大学 | Voltage-driven friction energy dissipation device for bridge structure |
| WO2022040915A1 (en) * | 2020-08-25 | 2022-03-03 | 西门子（中国）有限公司 | Joint assembly and robot |
| CN112238842A (en) * | 2020-10-26 | 2021-01-19 | 合肥工业大学 | Brake system for unmanned vehicle |
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