CN102506106A - Electronic mechanical brake and automobile - Google Patents
Electronic mechanical brake and automobile Download PDFInfo
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- CN102506106A CN102506106A CN2011103360024A CN201110336002A CN102506106A CN 102506106 A CN102506106 A CN 102506106A CN 2011103360024 A CN2011103360024 A CN 2011103360024A CN 201110336002 A CN201110336002 A CN 201110336002A CN 102506106 A CN102506106 A CN 102506106A
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Abstract
The invention provides an electronic mechanical brake which comprises a brake caliper body, a brake disc, a friction disk and an actuating unit, wherein the actuating unit comprises a motor and a movement mechanism which is connected with an output end of the motor, the movement mechanism is arranged in the brake caliper body, and the actuating unit also comprises an elastic mechanism; the elastic mechanism is sleeved on the movement mechanism and is propped against an internal surface of the brake caliper body, and the elastic mechanism is positioned in a compression state before the movement mechanism moves forward; and the movement mechanism does a straight-line motion forward, and elastic potential energy in the elastic mechanism is released so as to push the movement mechanism to do an acceleration forward motion. Accordingly, the invention provides an automobile. The electronic mechanical brake outputs a torque to generate a brake clamping force through the coupling of the elastic mechanism and the motor, and larger brake clamping force can carry out braking when the motor outputs less power; and the response time of a brake system is shortened, the output power of the motor is reduced, the braking effect is better, and the electronic mechanical brake has four-wheel parking braking action.
Description
Technical field
The invention belongs to field of automobile, be specifically related to a kind of electric mechanical braking device, and the automobile that comprises said electric mechanical braking device.
Background technique
Development along with automotive engineering; People have higher requirement to power character, Economy, Security, maneuverability and the travelling comfort of automobile; More efficient, energy-conservation electromechanical braking system occurred, the mechanical system in the automobile is changed to electronic mechanical system gradually.
Electromechanical braking system uses electronic component to replace the part mechanical component, and substitutes whole braking lines through electric wire, has saved the valve element of a lot of braking system, has shortened the braking response time, has improved braking ability, has saved space hold; In addition, adopt electronic control unit ECU to carry out the integral body control of braking system, each break all has control unit separately, can increase various electronic control functions on this basis, is convenient to carry out the integrated of function and improves.And electromechanical braking system changes conventional hydraulic or the air-pressure brake executive component is an electric driving element, is convenient to realize brake-by-wire, is a kind of brand-new braking technology.Because electric driving element has characteristics such as controllability is good, speed of response is fast, electromechanical braking system has improved the brake safe performance of automobile greatly, shows bright development prospect.
In the prior art; The electric mechanical braking device is in the process of braking; Rely on the motor output torque to drive corresponding brake actuator and do straight line motion, produce the braking clamping force, thereby realize braking to eliminate the brake clearance between brake disc and the friction plate.In the process of carrying out above-mentioned braking; Because the motor transmission torque need pass through a series of transmission device to produce the braking clamping force; Its time that produces the braking clamping force is longer, and the real-time of braking effect is relatively poor, can not satisfy vehicle when carrying out emergency braking for the requirement of braking response time.In addition, the braking clamping force that the motor transmission torque produces is less, can not be implemented under the bigger braking clamping force and brake, and braking effect is relatively poor.
In addition, in long-term braking process, the friction between friction plate and the brake disc can make the continuous attenuate of the thickness of friction plate; Cause the brake clearance meeting between friction plate and the brake actuator increasing, and vehicle need the said brake clearance of elimination could produce the braking clamping force in braking process, during braking; When said brake clearance is in the certain limit; It can satisfy the requirement of braking real-time, but exceeds this scope and when becoming increasing, its braking response overlong time when said brake clearance; Influenced the real-time of braking; Braking effect is not good, therefore how to eliminate brake clearance effectively, and being implemented in interior the braking with bigger braking clamping force of short braking response time is problem demanding prompt solution in the existing technology.
Summary of the invention
Technical problem to be solved by this invention is to the above-mentioned deficiency that exists in the existing technology; The automobile that a kind of electric mechanical braking device is provided and comprises this break; Its braking response time lacks, can produce bigger braking clamping force; Good braking effect also has the effect of four-wheel parking braking.
Thereby solving technological scheme that technical problem of the present invention adopted and be this electric mechanical braking device comprises braking clamp body, brake disc, friction plate and can promote friction plate and travel forward and clamp the power mechanism of brake disc; Said power mechanism comprises motor and the motion that links to each other with the output terminal of motor; Said motion can convert rotatablely moving of motor into straight line motion, and motion is located in the braking clamp body, and said friction plate is arranged on the place ahead of motion; Wherein, Also include elastic mechanism in the said power mechanism, said elastic mechanism is sleeved on the motion, is limited between the internal surface of said motion and braking clamp body; Before motion travels forward; Elastic mechanism is in compressive state, and when motion forward during moving linearly, thereby the elastic potential energy in the elastic mechanism is released and promotes motion and quicken to travel forward.
Preferably; Also include the clearance self-regulating mechanism that to adjust brake clearance between motion and the friction plate automatically in this break; Said clearance self-regulating mechanism is arranged at said motion the place ahead; Non-self-locking screw, the piston cylinder that it comprises the non-self-locking nut that is fixedly connected with said motion, be connected through non-self-locking thread with said non-self-locking nut and be located at the interior jump ring in the said piston cylinder; Said piston-cylinder is contained in the front end of motion, and the piston cylinder outer surface cooperates with the internal surface gaps of braking clamp body, and the front end of non-self-locking screw is arranged in the piston cylinder; Interior jump ring is limited in the front end of non-self-locking screw in the piston cylinder, thereby makes non-self-locking screw do axial motion with respect to piston cylinder.
Preferably, also include magnetic clutch in the said electric mechanical braking device, it is movably arranged on the output shaft of motor.Be pull-in on the output shaft of motor during the outage of said magnetic clutch, the output shaft of motor is stuck, can not output torque; The output shaft disconnection of magnetic clutch when energising and motor, the output shaft of motor is free to rotate.
Preferably, also include the moment of torsion enlarger in the said power mechanism, it is arranged between said motor and the motion, and said moment of torsion enlarger adopts swash plate reducing gear or three grades of reducing gears; The input end of said moment of torsion enlarger is connected with the output shaft of motor, and the output terminal of moment of torsion enlarger is connected with the input end of motion.
Preferably; Said motion adopts screw mechanism; Said screw mechanism comprises leading screw and is sleeved on the feed screw nut on the leading screw that said leading screw links to each other with the output shaft of motor, the output shaft rotating band movable wire thick stick rotation of motor; Leading screw rotate to promote feed screw nut forward moving linearly contact with friction plate, thereby and the promotion friction plate clamping brake disc that travels forward.
Certainly, the motion among the present invention also can adopt other structures that can realize identical function.
Preferably, comprise spring in the said elastic mechanism, said spring housing is contained on the feed screw nut, and the front end of said feed screw nut is provided with step, and an end of said spring withstands on the internal surface of braking clamp body, and the other end withstands on the step of feed screw nut front end.
Further preferred, said spring adopts one or more groups butterfly spring, and said butterfly spring adopts the stacked structure of combined type or opposite.The said butterfly spring of respectively organizing is piled up by a plurality of butterfly springs and forms, and a plurality of butterfly spring has identical structure.The butterfly spring group is sleeved on the feed screw nut; And an end withstands on the internal surface of braking clamp body; The other end withstands on the step of feed screw nut front end; Before motion travels forward, through being acted on, certain pretightening force make it be in compressive state on the butterfly spring, and feed screw nut plays positioning action to butterfly spring.Because belleville spring has characteristics such as volume is little, load is big, combination is easy to use; Also has the advantage that load concentration is transmitted simultaneously; On the loading direction; Butterfly spring just can bear bigger load through less distortion, and its axial space is compact, and the effect that absorbs impact and dissipation energy is more remarkable.
Preferably, also be provided with biserial push angle contact bearing between said braking clamp body and the leading screw, the outer ring of said biserial push angle contact bearing and braking clamp body interference fit, its inner ring and leading screw interference fit.
Preferably; Also include the clearance self-regulating mechanism that can adjust brake clearance between said motion and the friction plate automatically in this break, said clearance self-regulating mechanism comprises non-self-locking nut, non-self-locking screw, piston cylinder and is located at the interior jump ring in the said piston cylinder; Said piston-cylinder is contained in the front end of feed screw nut; The piston cylinder outer surface cooperates with the internal surface gaps of braking clamp body; The ear end face of non-self-locking nut is fixedly connected on the front end of feed screw nut; The middle part of non-self-locking nut has through hole; The internal surface of said through hole is provided with non-self-locking internal thread, and the outer surface of non-self-locking screw is provided with non-self-locking thread, and leading screw has center hole near the middle part, termination of an end of friction plate; Non-self-locking screw passes the perforation of said non-self-locking nut and gets in the center hole of leading screw; The part that non-self-locking screw stretches into non-self-locking nut is connected through said non-self-locking thread with the internal surface of the perforation of non-self-locking nut, and non-self-locking screw stretches into the part and said center hole Spielpassung of the center hole of leading screw, and the front end of non-self-locking screw stretches out from the perforation of non-self-locking nut and gets in the piston cylinder; Jump ring is limited in the front end of non-self-locking screw between the internal surface and interior jump ring of piston cylinder in said, thereby makes non-self-locking screw do axial motion with respect to piston cylinder.
Further preferred, thrust bearing also is installed between the front end of jump ring and non-self-locking screw in said, the frictional force when it can reduce non-self-locking screw rotation; Said non-self-locking nut adopts bolt to be connected with the fixed connection mode of feed screw nut.
Preferably; Said electric mechanical braking device also includes contact; Said contact is fixed on the front end of feed screw nut; Said feed screw nut drives the direction moving linearly of contact to friction plate, and said contact contact with friction plate, thus and the promotion friction plate clamping brake disc that travels forward.
Further preferred, said contact adopts bolt to be connected the perhaps mode of interference fit with means of fixation between the feed screw nut front end, said contact employing piston cylinder or sleeve.
Preferably, said electric mechanical braking device also includes the adjustment piece that is used to adjust brake clearance between contact and the friction plate, and said adjustment piece passes the inwall of braking clamp body away from friction plate one end, and withstands on the end of spring away from friction plate.
Further preferred, said adjustment piece adopts one or more adjustment bolts, makes it to direction motion of friction plate and pressure spring makes spring be in compressive state through tightening the adjustment bolt.Through regulating the front and back position of adjustment bolt in braking clamp body, can realize adjustment to brake clearance between motion and the friction plate.Wherein, The mode of said adjustment brake clearance is: tighten the adjustment bolt its direction to friction plate is moved and pressure spring; Make spring promote the direction moving linearly of motion, travel forward and reduce brake clearance thereby said motion promotes friction plate to friction plate.
A kind of automobile that comprises above-mentioned electric mechanical braking device.
Among the present invention; The compression process of butterfly spring is: the output shaft of magnetic clutch energising back and motor breaks off; Control motor counter-rotating drives leading screw and rotates with respect to braking clamp body, and drives feed screw nut and do axial motion to the direction of butterfly spring, thereby the compression butterfly spring is until motor rotation blockage; Be the moment compression butterfly spring that the motor counter-rotating produces, make it be in compressive state; The output shaft adhesive of magnetic clutch outage back and motor; The output shaft of motor is stuck; And the compressive state of butterfly spring remained between feed screw nut and the braking clamp body; Stop the rotation of motor after the magnetic clutch adhesive, prevent that the pretightening force of storing butterfly spring from oppositely driving the motor rotation, to guarantee the precompressed effect of butterfly spring.Because butterfly spring withstands between the internal surface of step and braking clamp body of feed screw nut front end; And butterfly spring is under the compressive state through pretightening force; Stored elastic potential energy; When feed screw nut travelled forward, this elastic potential energy can be exchanged into the Driving force forward that acts on the feed screw nut, drove feed screw nut and quickened the direction motion to friction plate.
In said electric mechanical braking device braking process, motor just changes, and the pretightening force in the butterfly spring discharges, and promotes feed screw nut and drive clearance self-regulating mechanism to do feed movement to the direction of friction plate; Simultaneously; The output torque of motor itself passes torque to leading screw after the deceleration of moment of torsion enlarger increases square; And the drive leading screw rotates; Thereby leading screw and feed screw nut cooperate the drive feed screw nut to make feed movement promotion clearance self-regulating mechanism to the direction of friction plate to travel forward, and promptly butterfly spring and motor are coupled the common feed screw nut that promotes to the previous crops feed movement.
Said electric mechanical braking device also has the effect of four-wheel parking braking, and when needs carried out the parking braking operation, the output shaft of magnetic clutch energising back and motor broke off; Motor just changes, and the pretightening force in the butterfly spring discharges, and quickens to promote feed screw nut to the previous crops feed movement; Generation is used for the braking clamping force of parking braking, realizes the four-wheel parking braking, the electric mechanical braking device that uses the present invention to propose; Need not to install parking brake and carry out parking braking, the button of control magnetic clutch break-make only need be set, can realize the four-wheel parking braking; Simplified parking braking system of the prior art, saved the space, parking braking is effective.
Said elastic mechanism can reach 5%～100% of total braking force because of the braking force that the elasticity pretightening force produces; Like this, when the less power of motor output (be about original power 40%), the coupling through elastic mechanism has realized braking with bigger braking clamping force; Reduced the output power of motor; Reduced the output speed requirement of motor simultaneously, and had good braking effect, thereby reduced of the requirement of electric mechanical braking device motor performance.
The invention has the beneficial effects as follows: produce the braking clamping force through elastic mechanism and motor coupling output torque; Shortened the response time of whole braking system;, motor realized braking when exporting less power with bigger braking clamping force; Reduced the output power of motor, also had the effect of four-wheel parking braking, its braking effect is better.
Advantages such as simultaneously, this electric mechanical braking device also has compact structure, brake clearance is adjustable, long service life.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1 electric mechanical braking device;
Fig. 2 is the structural representation of the clearance self-regulating mechanism among Fig. 1;
Fig. 3 is the structural representation (combined type) of the butterfly spring among Fig. 1;
Fig. 4 is the structural representation of the embodiment of the invention 3 electric mechanical braking devices;
Fig. 5 is the structural representation of the embodiment of the invention 4 electric mechanical braking devices;
Fig. 6 is the structural representation of the embodiment of the invention 5 electric mechanical braking devices.
Among the figure: the 1-brake disc; The 2-friction plate; The 3-clearance self-regulating mechanism; The 4-butterfly spring; The 5-feed screw nut; The 6-leading screw; The 7-braking clamp body; 8-biserial push angle contact bearing; 9-moment of torsion enlarger; The 10-motor; The 11-magnetic clutch; 12-adjusts bolt; The 31-piston cylinder; The 32-thrust bearing; Jump ring in the 33-; The 34-non-self-locking nut; The non-self-locking screw of 35-.
Embodiment
For making those skilled in the art understand technological scheme of the present invention better, electric mechanical braking device of the present invention and automobile are described in further detail below in conjunction with accompanying drawing.
Thereby electric mechanical braking device of the present invention comprises braking clamp body 7, brake disc 1, friction plate 2 and can promote friction plate 2 and travels forward and clamp the power mechanism of brake disc 1; Said power mechanism comprises the motion that motor 10 links to each other with output terminal with motor 10, and said motion can convert rotatablely moving of motor into straight line motion, and motion is located in the braking clamp body 7; Said friction plate 2 is arranged on the place ahead of said motion; Also include elastic mechanism in the said power mechanism, said elastic mechanism is sleeved on the motion, and is limited between the internal surface of said motion and braking clamp body 7; Before motion travels forward; Elastic mechanism is in compressive state, and when motion forward during moving linearly, thereby the elastic potential energy in the elastic mechanism is released and promotes motion and quicken to travel forward.
Embodiment 1:
As shown in Figure 1; In the present embodiment, thereby this electric mechanical braking device comprises braking clamp body 7, brake disc 1, friction plate 2, can promote friction plate 2 travel forward power mechanism that clamps brake disc 1 and the clearance self-regulating mechanism 3 that can adjust brake clearance between motion and the friction plate 2 automatically.
Wherein, power mechanism comprises motor 10, magnetic clutch 11, moment of torsion enlarger, converts rotatablely moving of motor 10 into straight-line motion and elastic mechanism.In this instance, said motor 10 adopts dc brushless motor; Said moment of torsion enlarger 9 adopts the swash plate reducing gear, and said swash plate reducing gear comprises the swash plate difference tooth reduction gear that is used to slow down and increases square.
The input end of said swash plate reducing gear is connected on the output shaft of motor 10, and output terminal is connected on the input end of motion, thereby the rotation output torque of motor 10 outputs to motion after the deceleration of swash plate reducing gear increases square.
In the present embodiment, motion adopts screw mechanism, and screw mechanism comprises leading screw 6 and be sleeved on the feed screw nut 5 on the leading screw 6 that said feed screw nut 5 Spielpassung are in braking clamp body 7.The output terminal of swash plate reducing gear is connected with leading screw 6, thus can with motor 10 output slow down transmission of torque after increasing square to leading screw 6 through the swash plate reducing gear, drive leading screw 6 and rotate with respect to braking clamp body 7; Because leading screw 6 and feed screw nut 5 cooperatively interact through screw thread; And the front end of feed screw nut 5 withstands on the clearance self-regulating mechanism 3, and the cooperation of feed screw nut 5 and leading screw 6 drives feed screw nut 5 to the previous crops feed movement, travels forward thereby promote clearance self-regulating mechanism 3; Because friction plate 2 is arranged on the place ahead of said screw mechanism; Clearance self-regulating mechanism 3 travels forward and contacts with friction plate 2, can eliminate the gap between brake disc 1 and the friction plate 2, and friction plate 2 clamps brake disc 1; The braking clamping force that generation is used to brake is to realize braking.
Wherein, magnetic clutch 11 is movably arranged on the output shaft of motor 10, is pull-in on the output shaft of motor 10 during 11 outages of said magnetic clutch, and the output shaft of motor 10 is stuck, can not output torque; During energising, magnetic clutch 11 unclamps the output shaft of motor 10, makes the output shaft of motor 10 free to rotate.
In the present embodiment, between braking clamp body 7 and leading screw 6, also be provided with biserial push angle contact bearing 8.The outer ring of biserial push angle contact bearing 8 and braking clamp body 7 interference fit, its inner ring and leading screw 6 interference fit.
Elastic mechanism comprises spring, said spring housing be contained on the feed screw nut 5 and Spielpassung in braking clamp body 7.In the present embodiment, spring adopts butterfly spring.As shown in Figure 3, butterfly spring adopts many groups, and every group of butterfly spring piles up by a plurality of butterfly springs and form, and a plurality of butterfly spring has identical structure.Butterfly spring adopts the stacked structure of combined type or opposite, and belleville spring 4 adopts the stacked structure of combined type in the present embodiment.Butterfly spring 4 is sleeved on the feed screw nut 5; One end of said butterfly spring 4 withstands on the inwall of braking clamp body 7; The other end withstands on the step surface of feed screw nut 5 front ends; Before motion travels forward, through being acted on the butterfly spring 4, certain pretightening force make it be in compressive state, and 5 pairs of butterfly springs 4 of feed screw nut play positioning action.
The compression process of butterfly spring 4 is: the output shaft of magnetic clutch 11 energising backs and motor 10 breaks off; Motor 10 counter-rotatings drive leading screw 6 and rotate with respect to braking clamp body 7; And drive feed screw nut 5 to direction motion away from friction plate 2; Thereby compression butterfly spring 4 is until motor 10 stalls, i.e. the moment compression butterfly spring 4 that motor 10 counter-rotatings produce makes it be in compressive state; The output shaft adhesive of magnetic clutch 11 outage backs and motor 10; The output shaft of motor 10 is stuck; The compressive state of butterfly spring 4 is remained between the internal surface of feed screw nut 5 and braking clamp body 7; Stop the rotation of motor 10 after magnetic clutch 11 adhesives, prevent that the pretightening force of storing butterfly spring 4 from oppositely driving motor 10 rotations, to guarantee the precompressed effect of butterfly spring 4.Because an end of butterfly spring 4 withstands between the internal surface of step and braking clamp body 7 of feed screw nut 5 front ends; And butterfly spring 4 is under the compressive state through pretightening force; Stored elastic potential energy; When feed screw nut 5 travelled forward, this elastic potential energy can be exchanged into the Driving force forward that acts on the feed screw nut 5.
As shown in Figure 2, clearance self-regulating mechanism 3 comprises piston cylinder 31, thrust bearing 32, interior jump ring 33, non-self-locking nut 34 and non-self-locking screw 35.
Piston cylinder 31 is sleeved on the front end of feed screw nut 5, and the outer surface of said piston cylinder 31 cooperates with braking clamp body 7 internal surface gaps, and thrust bearing 32 is located in the piston cylinder 31 with interior jump ring 33.
The ear end face of non-self-locking nut 34 end of friction plate 2 (promptly away from) is fixedly connected on the front end of feed screw nut 5, and in the present embodiment, said non-self-locking nut 34 adopts bolt to be connected with the fixed connection mode of feed screw nut 5.The front-end face of non-self-locking nut 34 can contact with non-self-locking screw 35 front ends; The middle part of non-self-locking nut 34 is provided with perforation; The internal surface of said perforation is provided with non-self-locking internal thread; The outer surface of non-self-locking screw 35 is provided with non-self-locking thread; Leading screw 6 has center hole near the middle part, termination of an end of friction plate 2, and non-self-locking screw 35 stretches in the said non-self-locking nut 34 and gets in the center hole of said leading screw, and the part that non-self-locking screw 35 stretches into non-self-locking nut 34 is connected through said non-self-locking thread with the internal surface of the perforation of non-self-locking nut 34; Non-self-locking screw 35 stretches into the part and said center hole Spielpassung of the center hole of leading screw 6; The front end of non-self-locking screw 35 stretches out from the perforation of non-self-locking nut 34 and gets in the piston cylinder 31, and said interior jump ring 33 is limited in the front end of non-self-locking screw 35 between the internal surface and interior jump ring 33 of piston cylinder 31, thereby makes non-self-locking screw 35 do axial motion with respect to piston cylinder 31.Like this, when motor 10 counter-rotatings, non-self-locking screw 35 can not return with non-self-locking nut 34, and can only in piston cylinder 31, rotate.
In the present embodiment, the working procedure of said electric mechanical braking device is following:
In the break braking process; Motor 10 is just changeing; The output shaft of magnetic clutch 11 energisings and motor 10 breaks off, and the pretightening force that is stored in the butterfly spring 4 is released, and promotes feed screw nut 5 and drive clearance self-regulating mechanism 3 to do feed movement to the direction of friction plate 2; Simultaneously; Motor 10 output torques own pass torque to leading screw 6 after the deceleration of swash plate reducing gear increases square; And drive leading screw 6 rotates; Thereby leading screw 6 and feed screw nut 5 cooperate and drive feed screw nuts 5 and do feed movement to the direction of friction plate 2 and promote clearance self-regulating mechanism 3 and travels forward, and promptly butterfly spring 4 and the motor 10 common feed screw nut 5 that promotes that is coupled is done feed movement to the direction of friction plate 2.
In the 5 proal whiles of feed screw nut; Feed screw nut 5 passes to thrust the non-self-locking nut 34 that is fixedly connected with it; Driving non-self-locking nut 34 marches forward to the gap of also eliminating fast between non-self-locking nut 34 and the non-self-locking screw 35; And promote non-self-locking screw 35 and withstand on the internal surface of piston cylinder 31, and then promote piston cylinder 31 and do feed movement to friction plate 2 directions, thereby eliminated the gap between brake disc 1 and the friction plate 2; The braking clamping force that generation is used to brake is to realize braking.
After the break braking is accomplished; Motor 10 counter-rotatings, and pass through swash plate reducing gear drive leading screw 6 and rotate, leading screw 6 cooperates the opposite direction axial motion of drive feed screw nut 5 to friction plate 2 with feed screw nut 5; Be that feed screw nut moves backward, move backward thereby drive non-self-locking nut 34.This moment, the front end owing to non-self-locking screw 35 was limited between the inboard and interior jump ring 33 of piston cylinder 31; When non-self-locking nut 34 moves with feed screw nut 5 backward; Non-self-locking screw 35 can't be stepped back with non-self-locking nut 34, can only in piston cylinder 31, rotate, like this; Non-self-locking screw 35 rotates with respect to non-self-locking nut 34 with thrust roller bearing 32 together; That is to say that clearance self-regulating mechanism 3 can travel forward, and then can not return its original position with feed screw nut 5 during end of braking in the process of braking.Therefore; When break uses long end after the time; Although the thickness of friction plate 2 thins down and since clearance self-regulating mechanism 3 also constantly travelling forward near friction plate 2, simultaneously since feed screw nut 5 contact with friction plate 2 through clearance self-regulating mechanism 3 and brake; Thereby the increasing phenomenon of brake clearance between friction plate 2 and the clearance self-regulating mechanism 3 can not occur, thereby realized the self-regulation effect of brake clearance.
The electric mechanical braking device that the present invention proposes also has the effect of four-wheel parking braking, and is concrete, when needs carry out the parking braking operation; The output shaft of magnetic clutch 11 energising backs and motor 10 breaks off, and motor 10 is just changeing, and the pretightening force in the butterfly spring 4 discharges; Quicken to promote feed screw nut 5 to the previous crops feed movement, produce the braking clamping force that is used for parking braking, realize the four-wheel parking braking; The electric mechanical braking device that uses the present invention to propose need not to install parking brake and carries out parking braking, and the button of control magnetic clutch 11 break-makes only need be set; Can realize the four-wheel parking braking; Simplified parking braking system of the prior art, saved the space, parking braking is effective.
5%～100% of the total braking force that it is whole break that the elastic potential energy of butterfly spring 4 transforms the back active force that is produced; Like this, when the less power of motor 10 output, the coupling of itself and butterfly spring 4 has realized braking with bigger braking clamping force; Thereby reduced the output power of motor 10; Simultaneously also reduced the output speed requirement of motor 10, and had good braking effect, thereby reduced of the requirement of electric mechanical braking device motor performance; Simultaneously; The pretightening force of said break butterfly spring 4 in braking process is released; Quickened feed screw nut drive clearance self-regulating mechanism and done feed movement, thereby eliminated the gap between brake disc 1 and the friction plate 2 fast, shortened the cumulative time that break is braked to the direction of friction plate 2; Realized in the short response time, realizing braking, good braking effect with bigger braking clamping force.
A kind of automobile that comprises the device of electric mechanical braking described in the present embodiment.
Embodiment 2:
Present embodiment and embodiment's 1 difference is: do not have the elastic mechanism among the embodiment 1 in the present embodiment.
Other structures in the present embodiment and use are all identical with embodiment 1, repeat no more here.
Embodiment 3:
Present embodiment and embodiment's 1 difference is:
(1) do not have clearance self-regulating mechanism 3 among the embodiment 1 in the present embodiment.
The front end of said feed screw nut 5 can directly contact with friction plate 2, through eliminating the gap between brake disc 1 and the friction plate 2, to realize braking.
Perhaps, as shown in Figure 4, the front end of said feed screw nut 5 is provided with contact; Said contact is fixed on the front end of feed screw nut 5; Said contact can directly contact with friction plate 2, through eliminating the gap between brake disc 1 and the friction plate 2, to realize braking.In the present embodiment, said contact adopts piston cylinder, and the means of fixation of the front end of said piston cylinder and feed screw nut 5 adopts interference fit.
(2) present embodiment also includes the adjustment piece that is used to adjust brake clearance between said contact and the friction plate 2, and said adjustment piece passes the inwall of braking clamp body 7 away from friction plate 2 one ends, and withstands on the end of spring away from friction plate 2.In the present embodiment, said adjustment piece adopts one or more adjustment bolts 12, makes it to the motion of direction of friction plate 2 and pressure spring makes spring be in compressive state through tightening adjustment bolt 12.Through regulating the front and back position of adjustment bolt 12 in braking clamp body, can realize adjustment to brake clearance between motion and the friction plate 2.
Concrete, the mode of the brake clearance between adjustment bolt 12 adjustment motions and the friction plate 2 is:
Tightening adjustment bolt 12 moves and pressure spring its direction to friction plate 2; Make spring be in compressive state, stored elastic potential energy, during braking; Spring discharges elastic potential energy; Promote feed screw nut 5 and move to friction plate 2 directions, thereby promotion friction plate 2 travels forward and reduced brake clearance, reaches the purpose of adjustment brake clearance with contact.Act on the butterfly spring 4 through certain pretightening force and to make it be in compressive state; Make break in braking process, can produce bigger braking clamping force in the short period of time on the one hand; Make on the other hand and produce interaction force between adjustment bolt 12 and the butterfly spring 4; The relative position of adjustment bolt 12 and butterfly spring 4 is fixed under no external force effect, avoids the wild effect of brake clearance.
Other structures in the present embodiment and use are all identical with embodiment 1, repeat no more here.
Embodiment 4:
As shown in Figure 5, present embodiment and embodiment's 3 difference is:
Contact described in the present embodiment adopts sleeve, and said sleeve adopts bolt to be connected with the means of fixation of the front end of feed screw nut 5, and said moment of torsion enlarger 9 adopts three grades of reducing gears; Present embodiment does not possess the adjustment bolt 12 among the embodiment 3.
Other structures in the present embodiment and use are all identical with embodiment 3, repeat no more here.
Embodiment 5:
As shown in Figure 6, present embodiment and embodiment's 4 difference is: do not have the magnetic clutch 11 among the embodiment 4 in the present embodiment.
Other structures in the present embodiment and use are all identical with embodiment 4, repeat no more here.
By above detailed description to the above embodiment of the present invention; Can understand the present invention and produce the braking clamping force through elastic mechanism and motor 10 coupling output torques; And can adjust the brake clearance between friction plate 2 and the motion automatically, and shortened the response time of braking system,, motor 10 realized braking when exporting less power with bigger braking clamping force; Reduced the output power of motor 10, its braking effect is better.
It is understandable that above mode of execution only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For the one of ordinary skilled in the art, under the situation that does not break away from spirit of the present invention and essence, can make various modification and improvement, these modification also are regarded as protection scope of the present invention with improving.
Claims (14)
1. electric mechanical braking device; Comprise braking clamp body (7), brake disc (1), friction plate (2) and can promote friction plate (2) thereby travel forward clamping the power mechanism of brake disc (1), said power mechanism comprises the motion that motor (10) links to each other with output terminal with motor (10), and said motion can convert rotatablely moving of motor into straight line motion; Motion is located in the braking clamp body (7); Said friction plate (2) is arranged on the place ahead of motion, it is characterized in that, also includes elastic mechanism in the said power mechanism; Said elastic mechanism is sleeved on the motion; Be limited between the internal surface of said motion and braking clamp body (7), before motion travelled forward, elastic mechanism was in compressive state; When motion forward during moving linearly, thereby the elastic potential energy in the elastic mechanism is released and promotes motion and quicken to travel forward.
2. electric mechanical braking device according to claim 1 is characterized in that, also includes magnetic clutch (12) in the said electric mechanical braking device, and it is movably arranged on the output shaft of motor (11); Said magnetic clutch (12) outage the time is pull-in on the output shaft of motor (11), during magnetic clutch (12) energising with the output shaft disconnection of motor (11).
3. electric mechanical braking device according to claim 1 and 2; It is characterized in that; Also include moment of torsion enlarger (9) in the said power mechanism, it is arranged between said motor (10) and the motion, and said moment of torsion enlarger (9) adopts swash plate reducing gear or three grades of reducing gears; The input end of said moment of torsion enlarger (9) is connected with the output shaft of motor (10), and the output terminal of moment of torsion enlarger (9) is connected with the input end of motion.
4. electric mechanical braking device according to claim 1; It is characterized in that said motion adopts screw mechanism, said screw mechanism comprises leading screw (6) and is sleeved on the feed screw nut (5) on the leading screw (6); Said leading screw (6) links to each other with the output shaft of motor (10); The output shaft rotating band movable wire thick stick (6) of motor (10) rotates, and leading screw (6) rotation promotion feed screw nut (5) moving linearly forward contacts with friction plate (2), and promotes friction plate (2) thereby travel forward to clamp brake disc (1).
5. electric mechanical braking device according to claim 4; It is characterized in that; Comprise spring in the said elastic mechanism, said spring housing is contained on the feed screw nut (5), and the front end of said feed screw nut (5) is provided with step; One end of said spring withstands on the internal surface of braking clamp body (7), and the other end withstands on the step of feed screw nut (5) front end.
6. electric mechanical braking device according to claim 5 is characterized in that, said spring adopts one or more groups butterfly spring (4), and said butterfly spring (4) adopts the stacked structure of combined type or opposite.
7. electric mechanical braking device according to claim 4; It is characterized in that; Also be provided with biserial push angle contact bearing (8) between said braking clamp body (7) and the leading screw (6); The outer ring of said biserial push angle contact bearing (8) and braking clamp body (7) interference fit, its inner ring and leading screw (6) interference fit.
8. according to the described electric mechanical braking device of one of claim 4-7; It is characterized in that; Also include the clearance self-regulating mechanism (3) that can adjust brake clearance between said motion and the friction plate (2) automatically in this break, said clearance self-regulating mechanism (3) comprises non-self-locking nut (34), non-self-locking screw (35), piston cylinder (31) and is located at the interior jump ring (33) in the said piston cylinder (31); Said piston cylinder (31) is sleeved on the front end of feed screw nut (5); Piston cylinder (31) outer surface cooperates with the internal surface gaps of braking clamp body (7); The ear end face of non-self-locking nut (34) is fixedly connected on the front end of feed screw nut (5); The middle part of non-self-locking nut (34) has through hole; The internal surface of said through hole is provided with non-self-locking internal thread, and the outer surface of non-self-locking screw (35) is provided with non-self-locking thread, and leading screw (6) has center hole near the middle part, termination of an end of friction plate (2); Non-self-locking screw (35) passes the perforation of said non-self-locking nut (34) and gets in the center hole of leading screw; The part that non-self-locking screw (35) stretches into non-self-locking nut (34) is connected through said non-self-locking thread with the internal surface of the perforation of non-self-locking nut (34), and non-self-locking screw (35) stretches into the part and said center hole Spielpassung of the center hole of leading screw (6), and the front end of non-self-locking screw (35) stretches out from the perforation of non-self-locking nut and gets in the piston cylinder (31); Jump ring (33) is limited in the front end of non-self-locking screw (35) between the internal surface and interior jump ring (33) of piston cylinder (31) in said, thereby makes non-self-locking screw (35) do axial motion with respect to piston cylinder (31).
9. electric mechanical braking device according to claim 8 is characterized in that, between the front end of said interior jump ring (33) and non-self-locking screw (35) thrust bearing (32) is installed also; Said non-self-locking nut (34) adopts bolt to be connected with the fixed connection mode of feed screw nut (5).
10. according to the described electric mechanical braking device of one of claim 5-7; It is characterized in that; Said electric mechanical braking device also includes contact, and said contact is fixed on the front end of feed screw nut (5), and said feed screw nut (5) drives the direction moving linearly of contact to friction plate (2); Said contact is contacted with friction plate (2), and promote friction plate (2) thereby travel forward to clamp brake disc (1).
11. electric mechanical braking device according to claim 10 is characterized in that, the means of fixation between said contact and feed screw nut (5) front end adopts bolt to be connected or the mode of interference fit, said contact employing piston cylinder or sleeve.
12. electric mechanical braking device according to claim 10; It is characterized in that; Said electric mechanical braking device also includes the adjustment piece that is used to adjust brake clearance between contact and the friction plate (2); Said adjustment piece passes the inwall of braking clamp body (7) away from friction plate (2) one ends, and withstands on the end of spring away from friction plate (2).
13. electric mechanical braking device according to claim 12; It is characterized in that; Said adjustment piece adopts one or more adjustment bolts (12), makes it to the motion of direction of friction plate (2) and pressure spring makes spring be in compressive state through tightening adjustment bolt (12).
14. an automobile comprises break, it is characterized in that, said break adopts one of claim 1-13 described electric mechanical braking device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103360024A CN102506106B (en) | 2011-10-27 | 2011-10-27 | Electronic mechanical brake and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103360024A CN102506106B (en) | 2011-10-27 | 2011-10-27 | Electronic mechanical brake and automobile |
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| CN102506106A true CN102506106A (en) | 2012-06-20 |
| CN102506106B CN102506106B (en) | 2013-11-20 |
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| CN2011103360024A Active CN102506106B (en) | 2011-10-27 | 2011-10-27 | Electronic mechanical brake and automobile |
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| CN103192722A (en) * | 2013-04-01 | 2013-07-10 | 重庆大学 | Electronic mechanical brake |
| CN105691374A (en) * | 2016-01-28 | 2016-06-22 | 江苏大学 | Heavy-duty car motor drive air braking system and braking method |
| CN106224415A (en) * | 2016-09-08 | 2016-12-14 | 上海六辔机电科技有限公司 | A kind of rail vehicle motor drives friction stopping device |
| CN106286649A (en) * | 2016-08-31 | 2017-01-04 | 焦作市制动器有限公司 | Releasing brake unit |
| 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 |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| WO2019047047A1 (en) * | 2017-09-06 | 2019-03-14 | 上海六辔机电科技有限公司 | Mechanical force-amplifying type motor-driven friction braking device for rail vehicle |
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| CN110406517A (en) * | 2018-04-26 | 2019-11-05 | 陕西重型汽车有限公司 | A kind of heavy-duty car electromechanical brake control system and its control method |
| CN110936974A (en) * | 2018-09-21 | 2020-03-31 | 比亚迪股份有限公司 | Brake, rail transit braking system and rail transit system |
| WO2020101445A1 (en) * | 2018-11-15 | 2020-05-22 | Mando Corporation | Brake system having spindle/nut assembly providing soft stop |
| CN111350780A (en) * | 2018-12-24 | 2020-06-30 | 陕西重型汽车有限公司 | Disc brake actuator and control method thereof |
| CN111577800A (en) * | 2019-02-15 | 2020-08-25 | 现代摩比斯株式会社 | Parking brake device |
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| CN112228479A (en) * | 2020-10-26 | 2021-01-15 | 上海三菱电梯有限公司 | Brake for elevator traction machine and implementation method thereof |
| CN112377539A (en) * | 2020-10-13 | 2021-02-19 | 东风汽车集团有限公司 | Brake device and vehicle |
| CN113915266A (en) * | 2021-10-08 | 2022-01-11 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Electronic mechanical brake device and new energy automobile |
| CN114701302A (en) * | 2022-06-08 | 2022-07-05 | 临工集团济南重机有限公司 | Electrically-driven axle and vehicle |
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| CN103192722B (en) * | 2013-04-01 | 2016-01-06 | 重庆大学 | Electromechanical brake |
| CN103192722A (en) * | 2013-04-01 | 2013-07-10 | 重庆大学 | Electronic mechanical brake |
| CN105691374A (en) * | 2016-01-28 | 2016-06-22 | 江苏大学 | Heavy-duty car motor drive air braking system and braking method |
| CN106286649B (en) * | 2016-08-31 | 2018-11-20 | 焦作市制动器有限公司 | Release brake apparatus |
| CN106286649A (en) * | 2016-08-31 | 2017-01-04 | 焦作市制动器有限公司 | Releasing brake unit |
| CN106224415A (en) * | 2016-09-08 | 2016-12-14 | 上海六辔机电科技有限公司 | A kind of rail vehicle motor drives friction stopping device |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424667B (en) * | 2017-08-29 | 2020-11-06 | 比亚迪股份有限公司 | Disc brake and vehicle |
| WO2019047047A1 (en) * | 2017-09-06 | 2019-03-14 | 上海六辔机电科技有限公司 | Mechanical force-amplifying type motor-driven friction braking device for rail vehicle |
| CN109552280A (en) * | 2017-09-26 | 2019-04-02 | 比亚迪股份有限公司 | Line control brake system and vehicle |
| CN111630301B (en) * | 2018-01-22 | 2023-05-12 | 利纳克有限公司 | Linear actuator |
| CN111630301A (en) * | 2018-01-22 | 2020-09-04 | 利纳克有限公司 | Linear actuator |
| CN110406517A (en) * | 2018-04-26 | 2019-11-05 | 陕西重型汽车有限公司 | A kind of heavy-duty car electromechanical brake control system and its control method |
| 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 |
| CN110936974A (en) * | 2018-09-21 | 2020-03-31 | 比亚迪股份有限公司 | Brake, rail transit braking system and rail transit system |
| CN110936974B (en) * | 2018-09-21 | 2021-02-23 | 比亚迪股份有限公司 | Brake, rail transit braking system and rail transit system |
| CN113039374A (en) * | 2018-11-15 | 2021-06-25 | 株式会社万都 | Brake system having spindle/nut assembly providing soft braking |
| WO2020101445A1 (en) * | 2018-11-15 | 2020-05-22 | Mando Corporation | Brake system having spindle/nut assembly providing soft stop |
| CN111350780A (en) * | 2018-12-24 | 2020-06-30 | 陕西重型汽车有限公司 | Disc brake actuator and control method thereof |
| CN111577800A (en) * | 2019-02-15 | 2020-08-25 | 现代摩比斯株式会社 | Parking brake device |
| CN112377539A (en) * | 2020-10-13 | 2021-02-19 | 东风汽车集团有限公司 | Brake device and vehicle |
| CN112377539B (en) * | 2020-10-13 | 2021-11-30 | 东风汽车集团有限公司 | Brake device and vehicle |
| CN112228479A (en) * | 2020-10-26 | 2021-01-15 | 上海三菱电梯有限公司 | Brake for elevator traction machine and implementation method thereof |
| CN112228479B (en) * | 2020-10-26 | 2023-02-03 | 上海三菱电梯有限公司 | Brake for elevator traction machine and implementation method thereof |
| CN113915266A (en) * | 2021-10-08 | 2022-01-11 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Electronic mechanical brake device and new energy automobile |
| CN114701302A (en) * | 2022-06-08 | 2022-07-05 | 临工集团济南重机有限公司 | Electrically-driven axle and vehicle |
| CN115923740A (en) * | 2023-01-16 | 2023-04-07 | 武汉步锐科汽车工业科技有限责任公司 | ABS control method based on motor |
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