CN104015717A - Lockable electronic brake system actuator - Google Patents

Lockable electronic brake system actuator Download PDF

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Publication number
CN104015717A
CN104015717A CN201410268439.2A CN201410268439A CN104015717A CN 104015717 A CN104015717 A CN 104015717A CN 201410268439 A CN201410268439 A CN 201410268439A CN 104015717 A CN104015717 A CN 104015717A
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CN
China
Prior art keywords
endless member
lead screw
leading screw
rotor
motor
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Granted
Application number
CN201410268439.2A
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Chinese (zh)
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CN104015717B (en
Inventor
王语风
王治中
宋健
于良耀
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Tsinghua University
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Tsinghua University
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Priority to CN201410268439.2A priority Critical patent/CN104015717B/en
Publication of CN104015717A publication Critical patent/CN104015717A/en
Application granted granted Critical
Publication of CN104015717B publication Critical patent/CN104015717B/en
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Abstract

The invention relates to a lockable electronic brake system actuator. The lockable electronic brake system actuator comprises a motor, a lead screw pair, a fixed shaft, a coil spring, a handle, a first annular component, a second annular component and a one-way clutch. The lead screw pair comprises a lead screw and a nut which is in threaded connection with the lead screw, wherein the lead screw is coaxially in fastening connection with a rotor of the motor, and a certain backlash exists between the rotor and the lead screw. The fixed shaft is arranged on the position, right opposite to the rear end of the lead screw, of a motor shell, and the fixed shaft and the lead screw are coaxial. The coil spring is connected with the lead screw and the fixed shaft in a sleeved mode. One end of the handle is in fastening connection with the coil spring. The fixed shaft is sleeved with the first annular component but does not make contact with the first annular component, and the first annular component is in fastening connection with the other end of the handle. The second annular component is in fastening connection with the rear end of the rotor. The one-way clutch is connected with the first annular component and the second annular component. When the rotation speed of the motor of the actuator is almost zero, torque can be maintained through mechanical locking, and there is no need to input current to the motor.

Description

A kind of electric brake system actuating unit that can locking
Technical field
The present invention relates to a kind of brake system actuating unit, particularly a kind of electric brake system actuating unit that can locking.
Background technology
Current electric brake system has had significant progress, an its important component part is actuating unit, when actuating unit work, moved by driven by motor lead screw pair, the torque axis of rotation is changed to thrust, this thrust or directly promote friction lining produce braking force (electromechanical braking system), or promotion piston, produce hydraulic coupling, indirectly promote friction lining and produce braking force (electric mechanical hydraulic brake system, its structure is with reference to Chinese patent ZL200920110660.X and ZL 200920110661.4).
All there is an identical problem in above-mentioned two kinds of brake system,, in order to ensure braking force, motor need to keep certain moment of torsion, and now the rotating speed of motor approaches quiescence, the actual not acting of motor, all energy of electric current are all converted into heat energy, produce a large amount of heat.When the moment of torsion that needs when the braking force needing is especially very large, motor can produce very large heat.In order to solve the problem of heating, motor need to select the volume that more coil is larger to reduce current of electric.But the increase of cost and the loss of energy are caused.Some invention but adopt automatically controlled mode to realize locking, such as electronically controlled power-transfer clutch, but adopt automatically controlled mode locking can cause the complicated of electric machine control, and the automatically controlled loss that causes equally energy, can only say the loss that has reduced energy, and can not stop completely.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of electric brake system actuating unit that can locking, when the motor speed of this actuating unit approaches when static, can keep moment of torsion and without to motor received current by mechanical locking.
For achieving the above object, the present invention by the following technical solutions: a kind of electric brake system actuating unit that can locking, it is characterized in that, it comprises: a motor; One lead screw pair, described lead screw pair comprises that a leading screw and is threaded in the nut on described leading screw, described leading screw is coaxially fastenedly connected the rotor of described motor, between described rotor and described leading screw, has certain play; One anchor shaft, described anchor shaft is rectified on right described electric machine casing after being arranged on described leading screw, and described anchor shaft is coaxial with described leading screw; One wind spring, described wind spring is socketed on described leading screw and described anchor shaft; One handle, one end of described handle and described wind spring are fastenedly connected; The first endless member, described the first endless member is nested with in described anchor shaft outside but does not contact with described anchor shaft, and the other end of described the first endless member and described handle is fastenedly connected; The second endless member, described the second endless member is fastenedly connected the rear end of described rotor; And a free-wheel clutch, described free-wheel clutch connects described the first endless member and the second endless member.
Described free-wheel clutch is another wind spring, and described another wind spring is socketed on described the first endless member and the second endless member.
Described free-wheel clutch is a unilateral bearing.
Under described electric machine operation state, the rotation direction of described rotor is set to the locking direction of described unilateral bearing.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is provided with a wind spring and a free-wheel clutch, wind spring is for realizing the locking between leading screw and electric machine casing, thereby free-wheel clutch is used for making wind spring to unclamp allows mechanism exit lockup state, like this when motor speed approaches static but need to keep certain moment of torsion time, mode by mechanical locking can provide moment of torsion, no longer by motor output torque, thus the heating problem of having avoided electric current to bring.2, the present invention and also simple in structure, be easy to realize, there is stronger practicality.2, the present invention is skillfully constructed, and can be integrated in comparatively easily in the system of motor and nut, has less volume, and this locking mode has higher reliability.
Brief description of the drawings
Fig. 1 is integral structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes a motor 1 and a lead screw pair 2, lead screw pair 2 comprises a leading screw 21 and is threaded in the nut 22 on leading screw 21, leading screw 21 is coaxially fastenedly connected the rotor 11 of motor, between rotor 11 and leading screw 21, have certain play, rotor 11 just drives leading screw 21 to rotate after rotating certain angle.With rear the rectifying on right electric machine casing 12 of leading screw 21, an anchor shaft 13 is being set, anchor shaft 13 has coaxial relation with leading screw 21.On leading screw 21 and anchor shaft 13, be socketed a wind spring 3, in the time that the rotor 11 of motor 1 drives leading screw 21 to rotate, wind spring 3 is in releasing orientation, in the time that the rotor 11 of motor 1 stops operating, leading screw 21 because of be subject to axial thrust produce rotational force rotate backward, now leading screw 21 drives wind spring 3 to tighten up, thereby reaches lockup state.Tighten and connect one handle 4 at wind spring 3, the end of handle 4 is fastenedly connected an endless member 5, and endless member 5 is nested with in the outside of anchor shaft 13 but does not contact with anchor shaft 13.Be fastenedly connected another endless member 6 in the rear end of the rotor 11 of motor 1, on endless member 5 and another endless member 6, be nested with another wind spring 7.In the time that the rotor 11 of motor 1 starts to rotate from quiescence again, rotor 11 can rotate (because of the play existing between rotor 11 and leading screw 21) in advance, another endless member 6 of rotor 11 rear ends tightens up another wind spring 7 of drive, another wind spring 7 tightening up will drive endless member 5 and handle 4 to rotate, handle 4 is undertaken and rotor 11 rotation in the same way stirring wind spring 3, thereby wind spring 3 is unclamped, make leading screw 21 depart from lockup state, then leading screw 21 starts to rotate under the drive of rotor 11.
In above-described embodiment, being connected between endless member 5 and another endless member 6 can adopt any free-wheel clutch of the prior art, and be not limited to wind spring 7, for example adopt unilateral bearing, the rotation direction of motor 1 mode of operation lower rotor part 11 is set to the locking direction of unilateral bearing when mounted, in the time that the rotor 11 of motor 1 is started to rotate by quiescence again, unilateral bearing enters locking state, and then drive endless member 5 and handle 4 to rotate, handle 4 stirs that wind spring 3 rotates so that wind spring 3 unclamps, and leading screw 21 departs from lockup state.
In above-described embodiment, in the time that being connected between the rotor 11 of motor and anchor shaft 13 and between endless member 5 and another endless member 6 adopts free-wheel clutch, handle 4 is replaceable be the execution unit of corresponding control free-wheel clutch clutch.
The present invention only describes with above-described embodiment; structure, setting position and the connection thereof of each parts all can change to some extent; on the basis of technical solution of the present invention; all improvement of indivedual parts being carried out according to the principle of the invention and equivalents, all should not get rid of outside protection scope of the present invention.

Claims (4)

1. an electric brake system actuating unit that can locking, is characterized in that, it comprises:
One motor;
One lead screw pair, described lead screw pair comprises that a leading screw and is threaded in the nut on described leading screw, described leading screw is coaxially fastenedly connected the rotor of described motor, between described rotor and described leading screw, has certain play;
One anchor shaft, described anchor shaft is rectified on right described electric machine casing after being arranged on described leading screw, and described anchor shaft is coaxial with described leading screw;
One wind spring, described wind spring is socketed on described leading screw and described anchor shaft;
One handle, one end of described handle and described wind spring are fastenedly connected;
The first endless member, described the first endless member is nested with in described anchor shaft outside but does not contact with described anchor shaft, and the other end of described the first endless member and described handle is fastenedly connected;
The second endless member, described the second endless member is fastenedly connected the rear end of described rotor; And
One free-wheel clutch, described free-wheel clutch connects described the first endless member and the second endless member.
2. a kind of electric brake system actuating unit that can locking as claimed in claim 1, is characterized in that, described free-wheel clutch is another wind spring, and described another wind spring is socketed on described the first endless member and the second endless member.
3. a kind of electric brake system actuating unit that can locking as claimed in claim 1, is characterized in that, described free-wheel clutch is a unilateral bearing.
4. a kind of electric brake system actuating unit that can locking claimed in claim 3, is characterized in that, under described electric machine operation state, the rotation direction of described rotor is set to the locking direction of described unilateral bearing.
CN201410268439.2A 2014-06-16 2014-06-16 A kind of lockable electric brake system actuator Active CN104015717B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410268439.2A CN104015717B (en) 2014-06-16 2014-06-16 A kind of lockable electric brake system actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410268439.2A CN104015717B (en) 2014-06-16 2014-06-16 A kind of lockable electric brake system actuator

Publications (2)

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CN104015717A true CN104015717A (en) 2014-09-03
CN104015717B CN104015717B (en) 2016-08-17

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005114005A (en) * 2003-10-07 2005-04-28 Honda Motor Co Ltd Electric brake device
JP2006514239A (en) * 2003-03-13 2006-04-27 フレニ・ブレンボ エス・ピー・エー Disc brake caliper
DE102006000019A1 (en) * 2005-01-24 2006-07-27 Advics Co., Ltd., Kariya Combined operating and park braking unit for motor vehicle, has movable block deformed between friction clutch and engagement section, where deformed condition of block is maintained, if hydraulic pressure is dislodged within unit
DE102008001522A1 (en) * 2008-04-30 2009-11-05 Robert Bosch Gmbh Electromechanical brake booster
JP2012081799A (en) * 2010-10-07 2012-04-26 Hitachi Automotive Systems Ltd Electric booster
CN102483142A (en) * 2009-09-01 2012-05-30 大陆-特韦斯贸易合伙股份公司及两合公司 Linear unit
CN103010199A (en) * 2012-12-27 2013-04-03 清华大学 Brake-by-wire system of automobile
CN103204150A (en) * 2013-03-26 2013-07-17 清华大学 Integrated vehicle brake actuation device using center valve mechanism
CN203460857U (en) * 2013-09-20 2014-03-05 吉林大学 Driving braking force adjusting system with failure backup function for motor driving hydraulic cavity

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006514239A (en) * 2003-03-13 2006-04-27 フレニ・ブレンボ エス・ピー・エー Disc brake caliper
JP2005114005A (en) * 2003-10-07 2005-04-28 Honda Motor Co Ltd Electric brake device
DE102006000019A1 (en) * 2005-01-24 2006-07-27 Advics Co., Ltd., Kariya Combined operating and park braking unit for motor vehicle, has movable block deformed between friction clutch and engagement section, where deformed condition of block is maintained, if hydraulic pressure is dislodged within unit
DE102008001522A1 (en) * 2008-04-30 2009-11-05 Robert Bosch Gmbh Electromechanical brake booster
CN102483142A (en) * 2009-09-01 2012-05-30 大陆-特韦斯贸易合伙股份公司及两合公司 Linear unit
JP2012081799A (en) * 2010-10-07 2012-04-26 Hitachi Automotive Systems Ltd Electric booster
CN103010199A (en) * 2012-12-27 2013-04-03 清华大学 Brake-by-wire system of automobile
CN103204150A (en) * 2013-03-26 2013-07-17 清华大学 Integrated vehicle brake actuation device using center valve mechanism
CN203460857U (en) * 2013-09-20 2014-03-05 吉林大学 Driving braking force adjusting system with failure backup function for motor driving hydraulic cavity

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