CN102410324B - Electromechanical brake and automobile - Google Patents

Electromechanical brake and automobile Download PDF

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Publication number
CN102410324B
CN102410324B CN 201110336038 CN201110336038A CN102410324B CN 102410324 B CN102410324 B CN 102410324B CN 201110336038 CN201110336038 CN 201110336038 CN 201110336038 A CN201110336038 A CN 201110336038A CN 102410324 B CN102410324 B CN 102410324B
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nut
voussoir
friction plate
hole
roller
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CN102410324A (en
Inventor
高国兴
杜金枝
王陆林
张世兵
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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Abstract

The invention provides an electromechanical brake which comprises a braking disc (1), a friction plate (2), a braking caliper body (3) and a power mechanism, wherein the power mechanism can push the friction plate (2) to move forwards so as to clamp the braking disc (1); the power mechanism comprises a motor (12) and a moving mechanism which is connected with the output end of the motor (12); the moving mechanism can be used for converting the rotation movement of the motor into linear movement; the moving mechanism is arranged in the braking caliper body (3), wherein the power mechanism also comprises a torque increasing mechanism for amplifying output torque of the motor (12); the input end of the torque increasing mechanism is connected with the output end of the moving mechanism; and the output end of the torque increasing mechanism can come into contact with the friction plate (2). Accordingly, the invention provides an automobile which comprises the brake. The electromechanical brake provided by the invention has the advantages of small volume, simple structure, low cost, long service life and the like compared with the prior art.

Description

A kind of electromechanical brake and automobile
Technical field
The invention belongs to field of automobile, be specifically related to a kind of electromechanical brake, and the automobile that comprises described electromechanical brake.
Background technique
Development along with automotive engineering, people have higher requirement to vehicle dynamic quality, Economy, Security, maneuverability and travelling comfort, mechanical system in automobile gradually to the electronic mechanical system conversion, efficient, energy-conservation electromechanical braking system occurred.
Electromechanical braking system uses electronic component to replace the part mechanical component, and substitutes whole braking lines by 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 integral body to braking system and control, each break has control unit separately, can increase various electronic control functions on this basis, is convenient to the integrated of function and improves.And electromechanical braking system changes conventional hydraulic or the air-pressure brake executive component is electric driving element, is convenient to realize brake-by-wire, is a kind of brand-new braking technology.Have the characteristics such as controllability is good, fast response time due to electric driving element, thereby electromechanical braking system improves the brake safe performance of automobile greatly, shown good development prospect.
In prior art, the motion that electromechanical brake generally comprises brake disc, friction plate, motor, the reducing gear that is connected with the output terminal of motor and is connected with the output terminal of reducing gear, described friction plate is positioned at the place ahead of described motion.When described break is braked, the moment of torsion of motor output slows down via reducing gear and exports motion to after increasing square, by motion, rotatablely moving of motor is converted to straight line motion, and promote forward friction plate, eliminate the brake clearance between brake disc and friction plate, thereby produce braking effect.But, for existing electromechanical brake, be arranged on the output terminal of motor due to the reducing gear for increasing moment, thereby need great braking clamping force in the process of braking, motion will bear the moment that equates with required braking clamping force, like this, in braking process frequently, motion is owing to often bearing larger moment thereby can shortening its life-span; And volume and the cost of this break have also been increased at the reducing gear of the output terminal setting of motor.
Summary of the invention
Technical problem to be solved by this invention is for electromechanical brake above shortcomings in prior art, a kind of electromechanical brake of the braking moment that motion bears and automobile that comprises this break of reducing is provided, thereby can extend the working life of electromechanical brake, and reduce its volume, save cost.
the technological scheme that solution the technology of the present invention problem adopts is that this electromechanical brake comprises brake disc, friction plate, braking clamp body, thereby and can promote friction plate and travel forward and clamp the power mechanism of brake disc, described power mechanism comprises motor and the motion that is connected with the output terminal of motor, described motion can be converted to straight line motion with rotatablely moving of motor, motion is arranged in braking clamp body, wherein, also include in described power mechanism and increase square mechanism with what the output torque of described motor was amplified, describedly increase the input end of square mechanism and the output terminal of motion joins, the output terminal that increases square mechanism can contact with friction plate.
In the present invention, mechanism is arranged on the output terminal of motion due to increment, thereby can avoid motion to bear large braking moment.
wherein, described motion adopts screw mechanism, described screw mechanism comprises leading screw and the first nut that is sleeved on leading screw, described leading screw is provided with non-self-locking outside thread on the end near friction plate, be provided with the non-self-locking internal thread that coordinates with non-self-locking outside thread on leading screw on the inwall of described the first nut, described leading screw is connected with the output terminal of motor away from an end of friction plate, the output terminal of motor rotates and drives the leading screw rotation, leading screw drives the first nut and makes axial feed motion, the first nut promotes increment mechanism and contacts with friction plate forward, thereby being travelled forward, friction plate clamps brake disc.
preferably, the described square mechanism of increasing comprises the second nut, voussoir, the second roller and push rod, described the second nut is arranged in braking clamp body, it includes the inner chamber of hollow structure, the first nut is placed in the inner chamber of the second nut, the second nut circumferentially is provided with several circumferential through-hole at the end near friction plate along self, described circumferential through-hole is communicated with the inner chamber of the second nut, the second nut also is provided with the axial hole that is communicated with described circumferential through-hole on the end face near an end of friction plate, described voussoir is placed in circumferential through-hole, be provided with voussoir in described circumferential through-hole, described the second roller is arranged in described axial hole and with voussoir and contacts, it is little that described the first nut is front end, the handstand frustoconic shape that the rear end is large, one end of described voussoir stretches into from circumferential through-hole in the inner chamber of the second nut and contacts with the first nut, the end face of the end that described voussoir contacts with the second roller is the plane of inclination, the direction of its inclination is for beginning to be tilted to the direction away from friction plate by horizontal plane from the end of voussoir near the first nut, voussoir is horizontal plane away from the end face of an end of the second roller, described push rod is arranged on the opposite end that the second roller contacts with voussoir and contacts with the second roller, the other end of push rod can contact with friction plate.
Further preferably, the axis of described the first nut and the angle between bus are 3 °~15 °, and the plane of inclination of described voussoir and the angle between horizontal plane are 3 °~15 °.
More preferably, one end of described voussoir stretches into the second nut intracavity from circumferential through-hole length be arranged so that the first nut between each voussoir by the time the first nut front end do not contact with voussoir, and its rear end contacts with voussoir and voussoir is pushed.
Preferably, also include the first roller in described increment mechanism, described the first roller is placed in the circumferential through-hole of the second nut, one end of the first roller contacts with voussoir, the other end stretches into from described circumferential through-hole in the inner chamber of the second nut and contacts with the first nut, its length that stretches into the second nut intracavity be arranged so that the first nut between each voussoir by the time the first nut front end do not contact with voussoir, and its rear end contacts with voussoir and voussoir is pushed.
More preferably, described power mechanism also includes piston cylinder, described piston cylinder is arranged on described increasing between square mechanism and friction plate, the outer wall of piston cylinder coordinates with the inwall of braking clamp body, on described piston cylinder, the position corresponding with the axial hole of the second nut is provided with axial half hole, and push rod is arranged in described axial half hole.
Preferably, also be provided with seal ring and dust-proof cover between the inwall of braking clamp body and piston cylinder.
The circumferential through-hole of preferred described the second nut equates with the quantity of axial hole, and is more than three or three.
Preferably, described the second nut is provided with the self-locking outside thread on the outer wall away from an end of friction plate, be provided with the self-locking internal thread that coordinates with self-locking outside thread on the second nut outer wall on described braking clamp body inwall, described leading screw is optical axis away from an end of friction plate, described optical axis stretches out from the first nut, be arranged with top cover on optical axis, the inwall of described top cover and described optical axis Spielpassung, the inwall interference fit of the outer wall of top cover and the second nut.Can drive leading screw integral body and move to the direction of friction plate by twisting downwards the second nut, realize gap hand adjustment function.
Preferably, be provided with flange between non-self-locking outside thread on optical axis on described leading screw and leading screw, also be arranged with needle roller thrust bearing on described optical axis, described needle roller thrust bearing is arranged between top cover and described flange, the frictional force when reducing to relatively rotate between leading screw and top cover.
A kind of automobile includes break, and described break adopts above-mentioned electromechanical brake.
Electromechanical brake provided by the invention, by motion with increase coordinating between square mechanism, namely realized amplification to the moment of motor output by the cooperation between leading screw, the first nut, the second nut, voussoir, the first roller, the second roller and push rod, thereby avoided at the output terminal of motor, reducing gear being set, avoided motion to bear large braking moment.And this to increase square mechanism volume little, simple in structure, thereby the present invention compared with prior art reduced electromechanical brake volume, saved cost; Simultaneously also reduce the moment of bearing on the leading screw, thereby extended the working life of leading screw.
Simultaneously, this electromechanical brake also has the advantages such as compact structure, brake clearance is adjustable.
Description of drawings
Fig. 1 is the cross-sectional view of electromechanical brake in the embodiment of the present invention 1;
Fig. 2 is the perspective view of the first nut 5, voussoir 7, the first roller 8, the second roller 9 and push rod 10 in Fig. 1;
Fig. 3 is the cross-sectional view of the first nut 5, voussoir 7 and the first roller 8 in Fig. 1.
In figure: the 1-brake disc; The 2-friction plate; The 3-braking clamp body; The 4-leading screw; 5-the first nut; 6-the second nut; The 7-voussoir; 8-the first roller; 9-the second roller; The 10-push rod; The 11-piston cylinder; The 12-motor; The 13-top cover; The 14-needle roller thrust bearing.
Embodiment
For making those skilled in the art understand better technological scheme of the present invention, below in conjunction with accompanying drawing, electromechanical brake of the present invention and the automobile that comprises this break are described in further detail.
electromechanical brake of the present invention comprises brake disc 1, friction plate 2, braking clamp body 3, thereby and can promote friction plate 2 and travel forward and clamp the power mechanism of brake disc 1, described power mechanism comprises the motion that motor 12 is connected with output terminal with motor 12, described motion can be converted to straight line motion with rotatablely moving of motor, motion is arranged in braking clamp body 3, wherein, also include in described power mechanism and increase square mechanism with what the output torque of described motor 12 was amplified, describedly increase the input end of square mechanism and the output terminal of motion joins, the output terminal that increases square mechanism can contact with friction plate 2.
Embodiment 1:
As shown in Figure 1, in the present embodiment, thereby this electromechanical brake comprises brake disc 1, friction plate 2, braking clamp body 3 and can promote friction plate 2 and travels forward and clamp the power mechanism of brake disc 1.
Wherein, power mechanism comprises motor 12, rotatablely moving of motor 12 is converted to straight-line motion, is sleeved on motion and increases square mechanism and to be sleeved on and describedly increase the front end of square mechanism and motion and at the described piston cylinder 11 that increases between square mechanism and friction plate 2 what the moment of motor 12 outputs was amplified.
In the present embodiment, motion adopts screw mechanism, described screw mechanism comprises leading screw 4 and the first nut 5 that is sleeved on leading screw 4, it is little that described the first nut 5 is front end, the handstand frustoconic shape that the rear end is large, angle between its bus and axis is α (as shown in Figure 3), and in the present embodiment, the scope of described angle α is 3 °~15 °.Described leading screw 4 is provided with non-self-locking outside thread on the end near friction plate 2, described non-self-locking is provided with ball on externally threaded path, be provided with the non-self-locking internal thread that coordinates with non-self-locking outside thread on leading screw 4 on the inwall of the first nut 5, leading screw 4 carries out non-self-locking with the first nut 5 by described screw thread and is connected.Leading screw 4 is connected with the output terminal of motor 12 away from an end of friction plate 2, thereby, the moment of torsion of motor 12 outputs passes to leading screw 4, and drives leading screw 4 with respect to braking clamp body 3 rotations, and leading screw 4 coordinates drive the first nut 5 to the previous crops axial feed motion with the first nut 5.
The moment of torsion of motor 12 output passes to after leading screw mechanism is converted to forward straight line moment and increases square mechanism, by passing to piston cylinder 11 after the amplification that increases square mechanism and carry out moment, described piston cylinder 11 is arranged on described increasing between square mechanism and friction plate 2, the inwall Spielpassung of the outer wall of piston cylinder 11 and braking clamp body 3 front ends, driven by screw mechanism and increase square mechanism pushing piston cylinder 11 forward, it is contacted with friction plate 2, produce the braking clamping force that is used for braking, make friction plate 2 clamp brake disc 1, eliminate the gap between brake disc 1 and friction plate 2, to realize braking.
Also be provided with seal ring and dust-proof cover between the inwall of described braking clamp body 3 front ends and piston cylinder 11, its sealing that is used for described break is with dustproof.
In the present embodiment, the described square mechanism of increasing comprises the second nut 6, voussoir 7, the first roller 8, the second roller 9 and push rod 10.
On described leading screw 4 near the opposite end of friction plate 2, namely the end away from friction plate 2 is optical axis, described optical axis stretches out from the endoporus of the first nut 5 hollows, the front portion of optical axis is provided with flange, the non-self-locking outside thread that arranges on described leading screw 4 is positioned at the front end of described flange, also be arranged with top cover 13 on described optical axis, the inwall interference fit of the outer wall of described top cover 13 and the second nut 6, the inwall of described top cover 13 and described optical axis Spielpassung.Also be provided with needle roller thrust bearing 14 between described top cover 13 and described flange, the frictional force when rotating to reduce leading screw 4.
Be provided with the self-locking outside thread on the outer wall of described the second nut 6, be provided with the self-locking internal thread that coordinates with self-locking outside thread on the second nut 6 outer wall on the inwall of described braking clamp body 3 rear ends one end of friction plate 2 (namely away from), the outer wall of the second nut 6 is connected by described screw thread self-locking with the inwall of braking clamp body 3 rear ends.Can drive leading screw 4 and the first nut 5 integral body and move to the direction of friction plate 2 by being rotated down the second nut 6, thereby realize the manual tune function of brake clearance.And second coordinate by self-locking thread between nut 6 and braking clamp body 3, make the second nut 6 have shockproof, anti-loosening property reliably, and Reusability still can keep original locking effect.
In the present embodiment, it is little that the first nut 5 is front end, the handstand frustoconic shape that the rear end is large.The second nut 6 is arranged in braking clamp body 3, and it includes the inner chamber of hollow structure, and the first nut 5 is placed in the inner chamber of the second nut 6 hollows.The second nut 6 circumferentially is provided with several circumferential through-hole at the end near friction plate 2 along self, described circumferential through-hole is communicated with the inner chamber of the second nut 6, the second nut 6 is provided with the axial hole that is communicated with described circumferential through-hole on the end face near an end of friction plate 2, and described circumferential through-hole is identical with the quantity of described axial hole.In the present embodiment, described circumferential through-hole and described axial hole adopt 8.
Voussoir 7 and the first roller 8 are placed in the circumferential through-hole of the second nut 6, in the present embodiment, be provided with a voussoir 7 and first roller 8 in each circumferential through-hole, one end of the first roller 8 contacts with voussoir 7, the other end stretches into from described circumferential through-hole in the inner chamber of the second nut 6 and can contact with the first nut 5, in other words, the first roller 8 is arranged between voussoir 7 and the first nut 5.as shown in Figure 2, the first roller 8 stretch into from circumferential through-hole length in the second nut intracavity make the first nut 5 do axial motion and between each voussoir by the time the first nut 5 the circumference that can each first roller 8 from each circumferential through-hole surrounds of front end in by and do not contact with this circumference, and the rear end of the first nut 5 can contact with the circumference that each the first roller 8 surrounds and each first roller 8 is produced squeezing action, the i.e. diameter of the circumference that surrounds less than a plurality of the first rollers 8 of the diameter of the first nut 5 front ends, the diameter of the circumference that the diameter of the first nut 5 rearward end surrounds greater than a plurality of the first rollers 8.
The second roller 9 is arranged in the axial hole of the second nut 6 and contacts with voussoir 7, in the present embodiment, is provided with second roller 9 in each axial hole.
Wherein, the end face of the end that voussoir 7 contacts with the second roller 9 is the plane of inclination, the direction of its inclination is for beginning to be tilted to the direction away from friction plate 2 by horizontal plane from the end of voussoir near the first nut 5, angle between this plane of inclination and horizontal plane is β (as shown in Figure 3), in the present embodiment, the scope of described angle β is 3 °~15 °, voussoir 7 is horizontal plane away from the end face of an end of the second roller 9, described push rod 10 is arranged on the opposite end that the second roller 9 contacts with voussoir and contacts with the second roller 9, and the other end of push rod 10 can contact with friction plate 2.
At the described piston cylinder 11 that increases between square mechanism and friction plate 2, thereafter the upper position corresponding with the axial hole of the second nut 6 of end face one end of friction plate 2 (namely away from) is provided with axial half hole, the quantity in described axial half hole is identical with described axial hole quantity, the quantity of push rod 10 is identical with the quantity in described axial half hole, each push rod 10 lays respectively in described each axial half hole, and the ear end face of described push rod 10 withstands on the second roller 9, and its front-end face withstands on the inwall in axial half hole on described piston cylinder 11.
Wherein, described voussoir 7, the first roller 8, the second roller 9, push rod 10, the second nut 6 circumferentially identical with the quantity in axial half hole on axial hole and piston cylinder 11, and described quantity is not less than three, in the present embodiment, and 8 of described quantity employings.
In sum, in the present embodiment to increase the square mechanism structure simple, and volume is little.
In the present embodiment, described break by motion with increase the cooperatively interact amplification of the moment that can realize motor 12 outputs of square mechanism.Concrete, as shown in Fig. 2,3, calculate according to formula tan α=1/i the velocity ratio i=1/tan α that the first nut 5 and voussoir 7 carry out transmission, suppose a stage gear ratio i 1=1/tan α=4, secondary transmission compares i 2=1/tan β=5, the resultant gear ratio of this electromechanical brake is i Always=i 1* i 2=20.If the motor output torque is 1000N, the moment that is delivered on leading screw 4 is 1000N, and the velocity ratio that carries out transmission according to the first nut 5 and voussoir 7 is 20, and the braking clamping force that produces is 20000N.Like this, by screw mechanism with increase the amplification that has realized coordinating of square mechanism the moment of motor 12 outputs, and reduced the braking moment of bearing on leading screw 4, thereby extended the working life of leading screw 4.
In the present embodiment, the working procedure of described electromechanical brake is as follows:
in this electromechanical brake braking process, motor 12 forwards, its output shaft rotation drives leading screw 4 and rotates, described leading screw 4 drive after the moment of torsion that receives motor 12 outputs the first nut 5 forward the direction of friction plate 2 (namely to) make axial feed motion, make outer wall promotion first roller 8 of the first nut 5 roll to the direction away from the first nut 5 in the circumferential through-hole of the second nut 6, the first roller 8 promotes voussoir 7 motions again, the surface of contact that contacts with the second roller 9 due to voussoir 7 is the plane of inclination, so voussoir 7 is promoted by the first roller 8 to away from the direction motion of the first nut 5 time, voussoir 7 is extruding the second rollers 9 and promote the second roller 9 and withstand on push rod 10 on the second roller 9 to the direction motion of friction plate 2 downwards, and then pushing piston cylinder 11 is made axial feed motion to the friction plate direction, eliminate the brake clearance between brake disc 1 and friction plate 2, to realize braking.
After described break braking is completed, motor 12 counter-rotatings drive leading screw 4 and rotate, leading screw 4 drive after the moment of torsion that receives motor 12 outputs the first nut 5 backward the direction of friction plate 2 (namely away from) do axial return motion, the thrust that acts on this moment on voussoir 7, the first roller 8, the second roller 9 and push rod 10 disappears, the thrust that causes acting on piston cylinder 11 also disappears thereupon, the second roller 9, voussoir 7, the first roller 8 all return back to original position, and described break is returned to original state.
A kind of automobile that comprises the described electromechanical brake of the present embodiment.
Embodiment 2:
The present embodiment and embodiment's 1 difference is: increasing in square mechanism of the present embodiment do not have the first roller 8.
Other structures in the present embodiment and use are all identical with embodiment 1, repeat no more here.
Embodiment 3:
The present embodiment and embodiment's 1 difference is: the present embodiment does not possess piston cylinder 11, and push rod 10 can directly contact with friction plate 2, and described push rod 10 second roller corresponding with it is fixedly connected with.
Other structures in the present embodiment and use are all identical with embodiment 1, repeat no more here.
Thereby electromechanical brake of the present invention has reduced the moment of bearing on leading screw 4 owing to being provided with the volume square mechanism of increasing little, simple in structure, simultaneously also avoided at the output terminal of motor 12, reducing gear being set, reduced electromechanical brake volume, saved cost, extended the working life of leading screw 4.
Be understandable that, above mode of execution is only the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement also are considered as protection scope of the present invention.

Claims (9)

1. electromechanical brake, comprise brake disc (1), friction plate (2), braking clamp body (3), and can promote friction plate (2) thereby travel forward to clamp the power mechanism of brake disc (1), described power mechanism comprises the motion that motor (12) is connected with output terminal with motor (12), described motion can be converted to straight line motion with rotatablely moving of motor, motion is arranged in braking clamp body (3), it is characterized in that, also include in described power mechanism and increase square mechanism with what the output torque of described motor (12) was amplified, describedly increase the input end of square mechanism and the output terminal of motion joins, the output terminal that increases square mechanism can contact with friction plate (2),
Described motion adopts screw mechanism, described screw mechanism comprises leading screw (4) and is sleeved on the first nut (5) on leading screw (4), described leading screw (4) is provided with non-self-locking outside thread on the end near friction plate (2), be provided with the non-self-locking internal thread that coordinates with non-self-locking outside thread on leading screw (4) on the inwall of described the first nut (5), described leading screw (4) is connected with the output terminal of motor (12) away from an end of friction plate (2);
the described square mechanism of increasing comprises the second nut (6), voussoir (7), the second roller (9) and push rod (10), described the second nut (6) is arranged in braking clamp body (3), it includes the inner chamber of hollow structure, the first nut (5) is placed in the inner chamber of the second nut (6), the second nut (6) circumferentially is provided with several circumferential through-hole at the end near friction plate (2) along self, described circumferential through-hole is communicated with the inner chamber of the second nut (6), the second nut (6) also is provided with the axial hole that is communicated with described circumferential through-hole on the end face near an end of friction plate (2), described voussoir (7) is placed in circumferential through-hole, be provided with voussoir (7) in described circumferential through-hole, described the second roller (9) is arranged in described axial hole and with voussoir (7) and contacts, it is little that described the first nut (5) is front end, the handstand frustoconic shape that the rear end is large, one end of described voussoir (7) stretches into from circumferential through-hole in the inner chamber of the second nut and contacts with the first nut (5), the end face of the end that described voussoir (7) contacts with the second roller (9) is the plane of inclination, the direction of its inclination is for beginning to be tilted to the direction away from friction plate by horizontal plane from the end of voussoir near the first nut (5), voussoir (7) is horizontal plane away from the end face of an end of the second roller (9), described push rod (10) is arranged on the opposite end that the second roller (9) contacts with voussoir and contacts with the second roller (9), the other end of push rod (10) can contact with friction plate (2).
2. electromechanical brake according to claim 1, is characterized in that, the axis of described the first nut (5) and the angle between bus are 3 °~15 °; The plane of inclination of described voussoir (7) and the angle between horizontal plane are 3 °~15 °; One end of described voussoir (7) stretches into the second nut intracavity from circumferential through-hole length be arranged so that the first nut (5) between each voussoir (7) by the time the first nut front end do not contact with voussoir, and its rear end contacts and voussoir is pushed with voussoir (7).
3. electromechanical brake according to claim 1, it is characterized in that, also include the first roller (8) in described increment mechanism, described the first roller (8) is placed in the circumferential through-hole of the second nut (6), one end of the first roller contacts with voussoir (7), the other end stretches into from described circumferential through-hole in the inner chamber of the second nut and contacts with the first nut (5), its length that stretches into the second nut intracavity be arranged so that the first nut (5) between each voussoir (7) by the time the first nut front end do not contact with voussoir, and its rear end contacts and voussoir is pushed with voussoir (7).
4. electromechanical brake according to claim 1, it is characterized in that, described power mechanism also includes piston cylinder (11), described piston cylinder (11) is arranged on described increasing between square mechanism and friction plate (2), the inwall Spielpassung of the outer wall of piston cylinder (11) and braking clamp body (3), the upper position corresponding with the axial hole of the second nut (6) of described piston cylinder (11) is provided with axial half hole, and push rod (10) is arranged in described axial half hole.
5. electromechanical brake according to claim 4, is characterized in that, also is provided with seal ring and dust-proof cover between the inwall of described braking clamp body (3) and piston cylinder (11).
6. electromechanical brake according to claim 3, is characterized in that, the circumferential through-hole of described the second nut (6) equates with the quantity of axial hole, and quantity is more than three or three.
7. one of according to claim 1-6 described electromechanical brakes, it is characterized in that, described the second nut (6) is provided with the self-locking outside thread on the outer wall away from an end of friction plate (2), be provided with the self-locking internal thread that coordinates with self-locking outside thread on the second nut (6) outer wall on described braking clamp body (3) inwall, described leading screw (4) is optical axis away from an end of friction plate (2), described optical axis stretches out from the first nut (5), be arranged with top cover (13) on optical axis, the inwall of described top cover (13) and described optical axis Spielpassung, the inwall interference fit of the outer wall of top cover (13) and the second nut (6).
8. electromechanical brake according to claim 7, it is characterized in that, be provided with flange between optical axis on described leading screw (4) and its non-self-locking outside thread, also be arranged with needle roller thrust bearing (14) on described optical axis, described needle roller thrust bearing (14) is arranged between top cover (13) and described flange.
9. an automobile, include break, it is characterized in that described break adopts one of claim 1-8 described electromechanical brake.
CN 201110336038 2011-10-27 2011-10-27 Electromechanical brake and automobile Active CN102410324B (en)

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN102384190B (en) * 2011-10-27 2014-02-05 奇瑞汽车股份有限公司 Electromechanical brake and automobile
CN112413006A (en) * 2019-08-23 2021-02-26 比亚迪股份有限公司 Disc brake and vehicle
CN110454523B (en) * 2019-09-03 2020-07-03 重庆中车四方所智能装备技术有限公司 Rocker arm type mechanical brake of motor for wind power

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