CN109204272A - Brake pedal simulator, brake system of car and vehicle - Google Patents

Brake pedal simulator, brake system of car and vehicle Download PDF

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Publication number
CN109204272A
CN109204272A CN201710527363.4A CN201710527363A CN109204272A CN 109204272 A CN109204272 A CN 109204272A CN 201710527363 A CN201710527363 A CN 201710527363A CN 109204272 A CN109204272 A CN 109204272A
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CN
China
Prior art keywords
elastic component
brake pedal
gear
assist motor
spring base
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Granted
Application number
CN201710527363.4A
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Chinese (zh)
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CN109204272B (en
Inventor
郑祖雄
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BYD Co Ltd
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BYD Co Ltd
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Publication date
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Priority to CN201710527363.4A priority Critical patent/CN109204272B/en
Publication of CN109204272A publication Critical patent/CN109204272A/en
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Publication of CN109204272B publication Critical patent/CN109204272B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input
    • B60T8/409—Systems with stroke simulating devices for driver input characterised by details of the stroke simulating device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input

Abstract

This disclosure relates to a kind of brake pedal simulator, brake system of car and vehicle, brake pedal simulator includes brake pedal, assist motor, department of assembly, it is axially disposed in the side of department of assembly and first elastic component and second elastic component overlapped along axial component, it is articulated with brake pedal and cooperates with the first elastic component can successively drive the first elastic component and the axially retractable thrust structure of the second elastic component, first elastic component provides pedal preset force for brake pedal, the output shaft of assist motor is cooperated by gear and rack teeth mechanism and the first elastic component, power-assisted can be provided for thrust structure, the first elastic component is compressed by thrust mechanism in the first working condition, the first elastic component is made by thrust structure and the cooperation of assist motor in the second working condition and the second elastic component is synchronous is compressed.Thus the brake feel of reliable brake pedal is provided and simulate accurate brake pedal force, good, brake pedal is accordingly rapid and other effects with operational stability.

Description

Brake pedal simulator, brake system of car and vehicle
Technical field
This disclosure relates to motor vehicle braking system technical field, and in particular, to a kind of brake pedal simulator, automobile brake System and vehicle.
Background technique
Existing vehicle especially in electric car, partial brake system eliminate the brake pedals of Conventional braking systems with Hydraulic or mechanical connection between brake, feedback is anti-to the braking on brake pedal when making driver that can not directly perceive braking Power, to lose the brake feel of Conventional braking systems.Wherein, brake feel refers to including pedal brake feeling, driver The synthesis of the factors such as vehicle braking deceleration, brake noise acoustically and the visual vehicle deceleration experienced Feel, wherein pedal brake feels to be most important part.For in above-mentioned braking system usually by adding brake pedal mould Quasi- device carrys out the characteristic of simulating brake pedal, feels to provide good pedal brake for driver.Brake pedal simulator Working principle is that the design object of pedal force is by mechanical braking element and certain control method come simulating brake pedal characteristic, For example, being realized in existing by mechanical braking element and hydraulic control method.And use the pedal of this hydraulic control method Not only structure is complicated but also because to may result in simulation pedal fluctuation larger and then deposit for the hydraulic shock of hydraulic system for simulator In the low problem of operational stability.
Summary of the invention
Purpose of this disclosure is to provide a kind of structure the good brake pedal simulator of simple and operational stability including should The brake system of car and vehicle of brake pedal simulator.
To achieve the goals above, according to one aspect of the disclosure, a kind of brake pedal simulator is provided, which steps on Plate simulator includes brake pedal, assist motor, the department of assembly for being assembled on vehicle body, is axially disposed in the department of assembly Side and along the first overlapped elastic component of the axial component and the second elastic component, be articulated with the brake pedal and with The first elastic component cooperation is can successively drive first elastic component and second elastic component along the axial stretching Thrust structure, first elastic component provides pedal preset force for the brake pedal, and the output shaft of the assist motor is logical It crosses gear and rack teeth mechanism and first elastic component cooperates, power-assisted can be provided for the thrust structure, wherein the braking There is pedal simulator the first working condition and the second working condition to pass through the thrust machine under first working condition Structure compresses first elastic component, under second working condition, passes through the thrust structure and power-assisted electricity The cooperation of machine is so that first elastic component is synchronous with second elastic component is compressed.
Optionally, the gear and rack teeth mechanism is cooperated by first elastic component and second elastic component, to pass through Compress second elastic component.
Optionally, first elastic component and second elastic component are helical spring.
Optionally, the size of first elastic component less than the second elastic component size, one of first elastic component Quartile in second elastic component inside and one end along described axially projecting in second elastic component.
Optionally, described one end of first elastic component is cooperated by the first spring base and the thrust structure, described Gear and rack teeth mechanism and the thrust structure can be cooperated by first spring base with second elastic component, with can be Compress second elastic component.
Optionally, one end that second elastic component corresponds to first spring base is provided with abutting spring base, and another Second spring seat is provided on one end, the other end of first elastic component is supported on the second spring seat, and described first Spring base can be moved axially along described can abut with the spring base that abut, described relative to the second spring seat First flange is separated with the abutting spring base under first working condition, and described first is convex under second working condition Edge is abutted with the spring base that abuts.
Optionally, first spring base includes the first flange and prolongs from first flange along described axially extending first Boom, the first end of the rack gear are connected to first flange, the second spring seat include the second flange and from this second Flange is along the second axially extending extension rod, and first extension rod is along described axially through the abutting spring base and can It is movably set in second extension rod, first elastic component is connected to first flange and described second and extends Bar.
Optionally, the thrust structure includes being articulated with the first distance rod of the brake pedal and being articulated with this first to push away Power bar simultaneously can drive first spring base along the second distance rod of the axial movement, second distance rod and the rack gear Second end cooperation.
Optionally, the first end of the rack gear is formed with the first mating flanges abutted with first spring base, The second end is formed with the second mating flanges with second distance rod cooperation.
Optionally, second distance rod is formed as ball stud, the bulb of second distance rod and second cooperation The cooperation of flange cambered surface.
Optionally, the radius of curvature of the bulb is less than the radius of curvature of the arc mating surface of second mating flanges.
Optionally, the hinged end of second distance rod is provided with the hinged seat for the U-shaped being threadedly coupled with the hinged end, should Hinge hole is respectively formed on the both side plate of hinged seat, second distance rod penetrates through the bottom plate of the hinged seat and passes through setting Nut thread connection on the bottom plate is on which floor plate with can be along axially adjustable position.
Optionally, the gear and rack teeth mechanism includes gear shaft and rack gear, and the gear shaft is defeated with the assist motor Axis connection and it is provided with the power-assisted gear engaged with the rack gear out, the first end of the rack gear is matched with first elastic component It closes, the second end of the rack gear and the thrust structure cooperate.
Optionally, the output shaft of the assist motor passes through deceleration mechanism and the gear axis connection.
Optionally, the deceleration mechanism is planet gear reducing mechanism, and in the planet gear reducing mechanism, sun gear is helped with described The output axis connection of force motor, planet carrier and the gear axis connection, gear ring are fixed on the shell of the brake pedal simulator It is interior.
Optionally, the assist motor, the deceleration mechanism and the gear and rack teeth mechanism are located at the department of assembly pair The side of first elastic component described in Ying Yu.
Optionally, the department of assembly is provided with close to the side of the rack gear of the gear and rack teeth mechanism for detecting the tooth The displacement sensor of the displacement of item.
Optionally, the brake pedal simulator further includes the controller for controlling the working condition of the assist motor And the sensor of the revolving speed for detecting the assist motor.
According to another aspect of the present disclosure, a kind of brake system of car is provided, the brake system of car includes institute as above The brake pedal simulator stated.
Optionally, the brake system of car includes brak control unit, which steps on according to the braking The real-time brake pedal force or pedal travel of plate control the working condition of the assist motor.
According to the another aspect of the disclosure, a kind of vehicle is provided, which includes brake system of car as described above.
By structure as described above, in driver's brake pedal, thrust structure successively drives the first elastic component It is axially compressed with the second elastic component, and make its output torque via rack-and-pinion by assist motor in this compression process Mechanism is transmitted to the second elastic component and/or the first elastic component and provides power-assisted for brake pedal and thrust structure, wherein gear teeth Mechanism bears to reduce what thrust structure was subject to by a part of opposition that the first elastic component and the second elastic component provide Opposition, so that brake pedal obtains suitable brake pedal force, so that the brake feel of reliable brake pedal is provided, Thus, it is possible to simulate accurate brake pedal force, with operational stability, good, brake pedal is accordingly rapid and other effects.Separately Outside, when the component malfunctions such as assist motor, gear and rack teeth mechanism and/or the second elastic component can not work normally, pass through First elastic component is brake pedal provides based-pedal power and also can be realized the brake feel of brake pedal, so as to continue Implement braking, keeps braking function.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the principle schematic diagram according to the brake pedal simulator of disclosure first embodiment；
Fig. 2 is the cooperation according to the second distance rod and butt joint in the brake pedal simulator of disclosure first embodiment State diagram；
Fig. 3 is according to the installation diagram two of the brake pedal simulator of disclosure first embodiment, wherein eliminating braking Pedal and the first distance rod；
Fig. 4 is according to the installation diagram three of the brake pedal simulator of disclosure first embodiment, wherein eliminating braking Pedal and the first distance rod；
Fig. 5 is the installation diagram according to thrust structure and shell in the brake pedal simulator of disclosure first embodiment, Brake pedal and the first distance rod is wherein omitted；
Fig. 6 is the principle schematic diagram according to the brake pedal simulator of disclosure second embodiment；
Fig. 7 is the cooperation according to the second distance rod and butt joint in the brake pedal simulator of disclosure second embodiment State diagram；
Fig. 8 is according to the installation diagram one of the brake pedal simulator of disclosure second embodiment, wherein eliminating braking Pedal and the first distance rod；
Fig. 9 is according to the installation diagram two of the brake pedal simulator of disclosure second embodiment, wherein eliminating braking The structure of the first distance rod of pedal, the first elastic component, the second elastic component and partial spring seat；
Figure 10 is the installation diagram according to thrust structure and shell in the brake pedal simulator of disclosure second embodiment, Brake pedal and the first distance rod is wherein omitted；
Figure 11 is former according to the structure of the brake pedal simulator of disclosure second embodiment in the first operative state Manage schematic diagram；
Figure 12 is the principle schematic diagram according to the brake pedal simulator of disclosure third embodiment；
Figure 13 is the structure chart according to the second distance rod of the brake pedal simulator of disclosure third embodiment；
Figure 14 is the installation diagram of the thrust structure and shell according to the brake pedal simulator of disclosure third embodiment One, wherein eliminating the first distance rod；
Figure 15 is the installation diagram of the thrust structure and shell according to the brake pedal simulator of disclosure third embodiment Two, wherein eliminating the first distance rod；
Figure 16 is the principle schematic diagram according to the brake pedal simulator of the 4th embodiment of the disclosure；
Figure 17 is the structure chart according to the second distance rod of the brake pedal simulator of the 4th embodiment of the disclosure；
Figure 18 is the installation diagram of the thrust structure and shell according to the brake pedal simulator of the 4th embodiment of the disclosure One, wherein eliminating the first distance rod；
Figure 19 is the installation diagram of the thrust structure and shell according to the brake pedal simulator of the 4th embodiment of the disclosure Two, wherein eliminating the first distance rod.
Description of symbols
100,200,300,400 brake pedal；101,201,301,401 assist motor；102,202,302,402 thrust knot Structure；103,203,303,403 first elastic component；104,204,304,404 second elastic component；105,205,305,405 department of assembly； 106,206 screw mechanism；306,406 gear and rack teeth mechanism；107,207 planet gear reducing mechanism；307,407 gear pair speed reducer Structure；108,208,308,408 controller；109,209,309,409 sensor；110,210,310,410 first spring base；111, 211,311,411 second spring seat；112,212 connecting rod；115,215,312,412 first flange；113,213 transmission gear； 117,217,313,413 first extension rod；114,214 idle pulley；116,216,314,414 second flange；；118,218,315, 415 second extension rods；316,416 first mating flanges；317,417 second mating flanges；318,418 displacement sensor；119, 219 abut spring base；120,220,320,420 shell；1011,2011,3011,4011 output shaft；1021,2021,3021, 4021 first distance rods；1022,2022,3022,4,022 second distance rod；1023,2023,3023,4023, bulb；1024, 2024,3024,4024 hinged seat；1025,2025,3025,4025 hinge hole；1026,2026,3026,4026 bottom plate；1027, 2027,3027,4027 nut；1028,2028 butt joint；3028,4028 locking seat；1029,2029 push-plate；3029,4029 card Only protrusion；1051,2051,3051,4051 fastener；1061,2061 power-assisted screw rod；3061,4061 gear shaft；1062,2062, 3063,4063 power-assisted gear；3062,4062 rack gear；1071,2071,3071,4071 sun gear；1072,2072,3072,4072 Planet carrier；1073,2073,3073,4073 gear ring；1074,2074,3074,4074 planetary gear；3101,4101 locking groove； 1201,2201,3201,4201 first shell portion；1202,2202,3202,4202 second shell portion；1203,2203,3203, 4203 third housing sections；1204,2204,3204,4204 dust cover；10281,20281U shape pressing plate；3181,4181 mounting hole.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " inside and outside " typically refers to corresponding portion Part profile it is inside and outside.
As shown in Fig. 1 to Figure 19, the disclosure provides the skill of a kind of brake pedal simulator, brake system of car and vehicle Art scheme.The brake pedal simulator of the disclosure realizes simulating brake pedal characteristic by elastic component and braking method, here, Brake pedal characteristic is usually by the corresponding relationship between pedal force and pedal travel and braking response time three come body It is existing.
The brake pedal simulator of the disclosure uses multiple elastic components and for driving multiple elastic components axially retractable Thrust structure fit structure, specifically, according to the first to the 7th embodiment of the disclosure, by following technical solution come Realize: the brake pedal simulator according to the disclosure includes brake pedal, multiple elastic components and is articulated with the brake pedal And with multiple elastic component cooperations with the thrust structure for driving the elastic component axially retractable, multiple elastic components In at least partly elastic component provide the pedal preset force for the brake pedal.Here, pedal preset force typically refers to Under the original state of non-brake pedal, brake pedal by via thrust structure by the reaction applied by elastic component Power.Wherein, all elastic part or partial elastic part provide pedal force for brake pedal, guarantee that braking system remains normal The brake feel for working and being capable of providing reliable brake pedal can be simulated from there through simple structure as described above Accurate brake pedal force, and good, brake pedal is accordingly rapid and other effects with operational stability.In addition, being stepped on for braking The pedal travel of plate can be indirectly by the mode of the compression travel of shift motion or elastic component for controlling thrust structure etc. Determine, or can also by other, reasonably control mode controls the pedal travel of brake pedal, herein not especially It limits.
In addition, the cooperation mentioned in the disclosure can usually be construed to by direct or indirect connection, fixation, abutting or Other fit systems and can be realized power transmitting function, do not limit especially herein.
In addition, multiple elastic components can be that the different demands such as installation space, operational stability are come rationally according to actual needs It designs the position of multiple elastic components, be mutually arranged relationship in ground.Optionally, the partial elastic part in multiple elastic components is In the case that the brake pedal provides the pedal preset force, the thrust structure can drive multiple institutes according to predetermined order The partial elastic part in elastic component is stated with remaining elastic component along the axial stretching；Multiple elastic components are the system In the case that dynamic pedal provides the pedal preset force, the thrust structure can drive all elastic components along axial synchronous It is flexible.Here, the case where providing pedal preset force for the partial elastic part in multiple elastic components for brake pedal, can pass through The partial elastic part in the multiple elastic component (state of i.e. non-brake pedal) and thrust knot in the initial state Structure cooperation, and remaining elastic component in multiple elastic components in the initial state not with thrust structure and/or the partial elastic part The mode of cooperation is realized.After brake pedal to default pedal travel, remaining elasticity is directly driven by thrust structure Part or thrust structure drive the modes such as remaining elastic component by the partial elastic part to realize remaining described elasticity of driving The axially retractable function of part.Here, remaining elastic component by it is flexible during, the partial elastic part can also be with described Remaining elastic component synchronously stretches or the partial elastic part also may remain in compressed state, can basis to this Actual needs specifically designs.In addition, for the above-mentioned specific arrangement side according to predetermined order according to multiple elastic components referred to Formula carrys out reasonable design.For example, the partial elastic part in multiple elastic components is more than two and is sequentially connected along axial direction Arrangement, and remaining elastic component be it is more than two and along axial direction be sequentially connected or arranged for interval in the case where, it is described suitable according to making a reservation for Sequence can first drive the partial elastic part to compress for thrust structure, can after the partial elastic part is compressed to predeterminated position By in such a way that the partial elastic part is with remaining described elastic component contact or thrust structure is matched with remaining described elastic component The mode of conjunction is come so that thrust structure successively drives remaining elastic component compression.And for being changed into initial shape from compressive state The sequence of state can be opposite with sequence as described above.In addition, for another example, when the partial elastic part is that two or more (herein may be used With using identical size elastic component) and along circumferential direction arranged for interval (for example, can be in two axially spaced apart circles Circumferentially spaced multiple elastic components along described two supporters are arranged between the isostructural supporter of disk), and remaining bullet Property part be also more than two (elastic component of identical size can be used herein) and along circumferential direction arranged for interval (for example, can be with The circumferentially-spaced cloth along described two supporters is arranged between two axially spaced apart isostructural supporters of disk The multiple elastic components set) in the case where, it is described first to drive the partial elastic jointly according to predetermined order for thrust structure Part is axially compressed, after the partial elastic part is compressed to predeterminated position jointly, can by the partial elastic part with The mode or thrust structure of remaining all elastic part contact and the mode of remaining all elastic part cooperation come so that Thrust structure drives remaining described all elastic part axially compressed jointly.And for being changed into original state from compressive state Sequence can be opposite with sequence as described above.For the specific driving method to elastic component of the example above, the disclosure is not It is defined in this, it, can as long as the function of driving multiple elastic components flexible can finally can be realized by the driving of thrust structure To fall in the protection scope of the disclosure using the arrangement of other a variety of multiple elastic components appropriate.
Optionally, the brake pedal simulator includes for driving the elastic component flexible can be the thrust knot Structure provides the driving device of power-assisted and/or resistance for the driving of the elastic component.Here, the driving device can use it is more Structure kind appropriate, can provide power-assisted, resistance or can meet simultaneously and mention for thrust structure for the driving of elastic component For the function of power-assisted and resistance, thus, it is possible to the cooperation by driving device and thrust structure can more accurate simulation go out Required pedal force.Here, optionally, the brake pedal simulator includes for driving the elastic component further to stretch with energy Enough the power assisting device of power-assisted is provided for the driving of the elastic component for the thrust structure.Wherein, the power assisting device can be with It using various structures, such as can be the single of the simple telescoping mechanism such as driving cylinders, the jack such as electric cylinder, cylinder, hydraulic cylinder Structure, or may be using a variety of machines such as gear pair, rack-and-pinion, turbine and worm pair, V belt translation pair, screw pair Tool transmission mechanism is mutually driven the structural assembly of cooperation, no matter which kind of structure is used, is not limited to the above-mentioned structure referred to herein, The function of power-assisted is provided for the driving of elastic component as long as can be implemented as thrust structure.
Wherein, optionally, the power assisting device include assist motor, in the assist motor and the elastic component extremely The transmission matching mechanism of small part elastic component cooperation, can be mentioned by the driving that the transmission matching mechanism is the thrust structure For power-assisted.In the disclosure, although the brake pedal simulator for providing following seven kinds of specific embodiments carrys out simulating brake and steps on Plate characteristic, wherein for the ease of and clearly demonstrate the disclosure, the brake pedal 100,200,300,400 and power-assisted being related to Motor 101,201,301,401 has been all made of identical structure, but this is not used to the interest field of the restriction disclosure.In addition, The arragement construction of various reasonable can be used for transmission matching mechanism, pass the output torque of assist motor as long as can be realized Elastic component is passed so that the function of power-assisted can be provided for thrust structure.For example, as shown in Figure 1 to 11, the transmission Matching mechanism may include screw mechanism, and the output shaft of assist motor can be cooperated by this screw mechanism and elastic component, from And power-assisted is provided for the driving of elastic component for thrust structure.For another example, as shown in Figure 12 to Figure 19, the transmission matching mechanism can To include gear and rack teeth mechanism, the output shaft of assist motor can be cooperated by this gear and rack teeth mechanism and elastic component, thus Power-assisted can be provided for the driving of elastic component for thrust structure.But the disclosure is not limited to above structure, removes above structure Except, the transmission matching mechanism can also pass for gear auxiliary drive gear, Worm and worm-wheel gearing, tape handler, chain The various structures such as motivation structure, or the appropriately combined structure between the above-mentioned various structures being related to.
Specifically, in driver's brake pedal, thrust structure drive elastic component it is axially compressed, thrust structure by The opposition provided to elastic component, and when the brake pedal force that this opposition acts on brake pedal reaches default When value, starting assist motor makes the torque exported by assist motor be transmitted to elastic component by transmission matching mechanism, with can There is provided power-assisted for brake pedal and thrust structure and elastic component driven further to be compressed so that brake pedal and thrust structure into One step is subjected to displacement variation, and since transmission matching mechanism bears a part of opposition applied by elastic component, thus It can reduce the opposition that thrust structure is subject to, so that brake pedal obtains suitable brake pedal force, so as to mould Draw up the pedal force of brake pedal and the target value of pedal travel.Here, when assist motor or transmission matching mechanism break down And when can not work normally, the brake feel that based-pedal power is also capable of providing brake pedal is provided by elastic component, thus It can continue to implement braking, keep braking function.
The brake pedal of drive and using assist motor as described above and be driven matching mechanism for to(for) elastic component It is dynamic that power-assisted is provided, thus the perfect linear characteristic of elastic component and realize the nonlinear change characteristic of brake pedal.That is, elastic Part provides based-pedal counter-force, guarantees that braking system remains work to lose in the components such as assist motor or transmission matching mechanism Also the brake feel of brake pedal is capable of providing when effect, by assist motor for elastic component driving force come comprehensive simulation pedal Power provides target pedal force by the cooperation of assist motor and elastic component, with compensated foundation pedal force and target pedal force Between remainder.Simulating brake pedal characteristic is realized by brake control method as described above as a result, and is passed through Assist motor is replaced such as existing hydraulic braking component with transmission matching mechanism and is not only simple in structure and not will receive hydraulic Etc. factors influence, thus have operational stability is good, brake pedal response rapidly and other effects.
Wherein, in four kinds of specific embodiments of the disclosure, the elastic component may include axially arranging along described First elastic component and the second elastic component, first elastic component and/or second elastic component are matched jointly combined into the braking Pedal provides pedal preset force, the transmission matching mechanism and first elastic component and/or second elastic component cooperates.? This, is not limited to two elastic components for the quantity of elastic component, can also reasonably select according to the actual situation.Here, It, can be using such as Fig. 1 to Fig. 5, Figure 12 to Figure 15 for the arrangement of two elastic components using the form of two elastic components Shown in series system disclosed in two embodiments can also be using two as shown in Fig. 6 to Figure 11, Figure 16 to Figure 19 Parallel way disclosed in embodiment.Herein, it should be noted that series system refers to that two elastic components are axially disposed, And two elastic components axially simultaneously stretch always under the driving by thrust structure and/or driving motor, that is, are initially driven Two elastic components are stretched simultaneously when dynamic.Specifically, under the driving of brake pedal and/or assist motor, two can be made Elastic component is synchronously carried out compression, and the pedal preset force of brake pedal can be by the first elastic component and in series system The common cooperation of two elastic components is to provide；And parallel way refers to that two elastic components are axially disposed, and in thrust structure and/or The lower two elastic component parts of the driving of assist motor are successively axially retractable, i.e., one of two elastic components are first when initially being driven Realize that another one carries out stretching along axial again later along axial compression.Specifically, in brake pedal and/or assist motor Driving under, can to contact with each other during some elastic component is in compression with another elastic component and simultaneously into one The arrangement of compression is walked, and the pedal preset force of brake pedal can be by the first elastic component or the second bullet in parallel way Property part provides, wherein being compressed at first for the elastic component that brake pedal provides pedal preset force.In addition, for two elastic components Arrangement can use the structure of various reasonable, can be with for example, two elastic components are using in the case where series arrangement By two axially adjacent arrangements of elastic component, or least partially overlapped arrangement can also be used.For another example, two elasticity The case where part is using parallel arrangement structure, can be axially spaced apart by two elastic components, or can also be by two elasticity The arrangement that part is overlapped along axial component is not particularly limited this disclosure, can such as space cloth according to actual needs Set the arragement construction that demand etc. carrys out specific design flexibility part.In above description, in order to illustrate more clearly of the arrangement side of elastic component Formula is described for the arragement construction of two elastic components, but one or more elastic component also can be fitted With above-mentioned parallel way or series system.Such as the elastic component include by multiple first elastic components it is circumferentially spaced arrangement and simultaneously The first Flexible element of row and the second Flexible element side by side by the circumferentially spaced arrangement of multiple second elastic components.For this Above-mentioned mode in parallel or series can also be applied in the elastic component of structure.
Further optionally, the transmission matching mechanism includes screw mechanism or gear and rack teeth mechanism, the assist motor Output shaft is cooperated by the screw mechanism or the gear and rack teeth mechanism and first elastic component and second elastic component, First elastic component and second elastic component can be driven synchronously to stretch or the output shaft of the assist motor is logical It crosses the screw mechanism and first elastic component or second elastic component cooperates, described in it can be driven according to predetermined order First elastic component and second elastic component are along the axial stretching.That is, as described above, in two elastic components using series connection cloth In the case where setting mode, the output shaft of assist motor can pass through screw mechanism or gear and rack teeth mechanism and the first elastic component and The cooperation of two elastic components provides power-assisted by the driving force that assist motor exports for thrust structure, thus drives by thrust structure Under dynamic first elastic component and the compressed state of the second elastic component, by assist motor can further drive the first elastic component and The synchronization of second elastic component is stretched.In the case where two elastic components use parallel arrangement mode, the output shaft of assist motor is logical Screw mechanism or gear and rack teeth mechanism and the first elastic component or the cooperation of the second elastic component are crossed, thus the drive exported by assist motor Power provides power-assisted for thrust structure, is thus driving the first elastic component or the compressed shape of the second elastic component by thrust structure Under state, the first elastic component and/or the second elastic component can be driven along axial further according to predetermined order by assist motor It is flexible.Here, for being arranged in parallel mode, when the output shaft of assist motor passes through screw mechanism or gear and rack teeth mechanism and first When elastic component cooperates, after first driving the first elastic component flexible by assist motor and transmission matching mechanism, pass through the first elastic component It is further driven with the subsequent mode cooperated with the second elastic component of mode or transmission matching mechanism of the second elastic component cooperation Second elastic component is axially retractable；When the output shaft of assist motor passes through screw mechanism or gear and rack teeth mechanism and the second elastic component When cooperation, after can first driving the second elastic component axially retractable by assist motor and transmission matching mechanism, then pass through second Elastic component and the first elastic component cooperation mode or transmission fit structure and the first elastic component directly cooperate by way of come Further the first elastic component of driving is axially retractable.For above-mentioned assist motor and transmission matching mechanism for the first elastic component and The specific driving sequence of second elastic component, the disclosure are not needed to limit, can reasonably be set according to actual arrangement structure Meter.
In addition, brake pedal simulator as described above can also include the department of assembly for being assembled on vehicle body, it is described First elastic component and second elastic component can be arranged in the side of the department of assembly.In the case, pedal mould to be braked When quasi- device is assembled to vehicle by department of assembly, two elastic components positioned at department of assembly side are respectively positioned in enging cabin.In addition, but It's not limited to that for the disclosure, and first elastic component and the second elastic component can be according to practical spatial arrangement demands come reasonably Design arrangement position, for example, the part-structure of the first elastic component and/or the second elastic component can be located at the other side of department of assembly, In the case, when pedal simulator to be braked is assembled to vehicle by department of assembly, positioned at the other side of the department of assembly The first elastic component and/or a part of of the second elastic component can be located in enging cabin, and another part can be exposed to and drive Room is sailed, thus, it is possible to reduce occupied space of the brake pedal simulator in enging cabin.But it's not limited to that for the disclosure, right It can reasonably be arranged according to the actual situation in the specific position of elastic component.
Hereinafter, be specifically described for four kinds of embodiments shown in Fig. 1 to Figure 19, here, Fig. 1 to Fig. 5 is as the One embodiment, Fig. 6 to Figure 11 is as second embodiment, and as a third embodiment, Figure 16 to Figure 19 makees Figure 12 to Figure 15 For the 4th embodiment, wherein Fig. 1 to first embodiment shown in fig. 5 and Figure 12 to third embodiment shown in figure 15 In disclose the first elastic component and the second elastic component arranged in series mode, second embodiment shown in Fig. 6 to Figure 11 and The parallel way of the first elastic component and the second elastic component is disclosed in 4th embodiment shown in Figure 16 to Figure 19.
In the following, first to the technical side of two springs in series arrangements of first embodiment and third embodiment Case is illustrated.
Referring to figs. 1 to Fig. 5, a kind of brake pedal simulator is provided according to disclosure first embodiment, the brake pedal Simulator includes brake pedal 100, assist motor 101, the department of assembly 105 for being assembled on vehicle body, is axially disposed in institute State the side of department of assembly 105 and along the first at least partly overlapped elastic component 103 of the axial direction and the second elastic component 104, Be articulated with the brake pedal 100 and with first elastic component 103 and the overlapped part of second elastic component 103 one End cooperation is can drive first elastic component 103 and second elastic component 104 simultaneously along the thrust of the axial stretching Structure 102, first elastic component 103 and second elastic component 104 are matched jointly to be stepped on combined into the brake pedal 100 offer Plate preset force, the output shaft 1011 of the assist motor 101 pass through screw mechanism 106 and first elastic component 103 and described The one end fits of the overlapped part of second elastic component 104, can be that the thrust structure 102 provides power-assisted.
Wherein, one end of the first elastic component 103 and at least partly overlapped part of the second elastic component 104 refers to the first bullet Corresponding one end of the two of the overlapped part of property part 103 and the second elastic component 104, that is, in 103 He of the first elastic component Second elastic component 104 either part is overlapped or all overlapped, and one end of the overlapped part refers to One end of first elastic component 103 and the corresponding arrangement of the second elastic component 104, wherein the first elastic component 103 and the second elastic component 104 described one end can flush in the axial direction, or can also arranged for interval in the axial direction, here, for the first elastic component 103 and second the arragement construction of one end of at least overlapped part of elastic component 104 be not particularly limited, as long as can be realized The first elastic component 103 and the second elastic component 104 is driven synchronously to press along axial direction by thrust structure 102 and/or assist motor 101 The function of contracting.
In the above-described first embodiment, the first elastic component 103 and the second stepping on as brake pedal 100 of elastic component 104 The analog element of plate power and pedal travel, in the initial state (in the case where i.e. non-brake pedal 100), the first elastic component 103 and second elastic component 104 be in compressive state to provide pedal preset force for brake pedal 100, wherein the first elastic component 103 and second wherein another one still is able to so that brake pedal 100 keeps normal in the case where the failure of one of elastic component 104 Pedal force, to improve the security performance of brake pedal simulator.
Specifically, in driver's brake pedal 100, thrust structure 102 drives the first elastic component 103 and the second bullet Property part 104 axially simultaneously compress, by the first elastic component 103 and the second elastic component 104, cooperation provides thrust structure 102 jointly Opposition, and when the brake pedal force that this opposition acts on brake pedal 100 reaches preset value, starting Assist motor 101 makes its output torque be converted into the first elastic component 103 of driving and the second elastic component by screw mechanism 106 104 axially compressed power and be that brake pedal 100 and thrust structure 102 provide power-assisted, specifically, screw mechanism 106 drive One end of at least overlapped part of first elastic component 103 and the second elastic component 104 is synchronously carried out compression along axial direction, so that 102 further occurrence change in displacement of brake pedal 100 and thrust structure, and since screw mechanism 106 is born by the first elasticity A part of opposition that part 103 and the second elastic component 104 provide, thus, it is possible to reduce thrust structure 102 be subject to it is reversed Active force, so that brake pedal 100 obtains suitable brake pedal force, so as to simulate the pedal force of brake pedal 100 With the target value of pedal travel.Here, working as assist motor 101, screw mechanism 106, the first elastic component 103 or the second elastic component 104 equal component malfunctions and when can not work normally, pass through the first elastic component 103 not broken down and/or the second elasticity Part 104 for brake pedal 100 provides based-pedal power and also can be realized the brake feel of brake pedal 100, so as to after It is continuous to implement braking, keep braking function.In addition, when driver discharge brake pedal 100 when, 101 power loss of assist motor and make First elastic component 103 and the second elastic component 104 realize self-return by the elastic-restoring force of itself.By making as described above Flowing control method realizes the characteristic of simulating brake pedal 100, and passes through the cooperation of assist motor 101 and screw mechanism 106 It brake pedal simulator be not only simple in structure and not will receive such as existing middle liquid to replace existing hydraulic braking component The influence of many factors such as pressure, thus have operational stability is good, brake pedal response rapidly and other effects.In addition, though It is driven matching mechanism in present embodiment and uses screw mechanism 106, but it's not limited to that for the disclosure, the transmission cooperation machine Structure can use other reasonable arragement constructions.
Optionally, first elastic component 103 and second elastic component 104 are helical spring.Thus, it is possible to by pushing away The driving force that power structure 102 and/or assist motor 101 act on makes quick and sensitive reaction and stretches.But this is not limited The scope of the present disclosure, in the cooperation that can guarantee brake pedal 100, assist motor 101, thrust structure 102 and screw mechanism 106 In the case where driving the first elastic component 103 and the second elastic component 104 flexible, first elastic component 103 and the second elastic component 104 can use the structure of various reasonable.
Optionally, the development length of first elastic component 103 is in the axial direction less than second elastic component 104 Development length, and described one end of first elastic component 103 and the overlapped part of second elastic component 104 is in the axis Alignment upwards.Here, what described one end of the lap of the first elastic component 103 and the second elastic component 104 was aligned in the axial direction In the case of, the extending direction of the first elastic component 103 towards the second elastic component 104 extends, as a result, entire first elastic component, 103 weight It is stacked on the extension of the second elastic component 104.Thereby, it is possible to reduce the entire length of brake pedal simulator, and arrange knot Structure is compact, makes the overall structure volume minimization of brake pedal simulator.But it's not limited to that for the disclosure, can be according to reality The demand of border elastic stiffness specifically arranges the structure of the first elastic component 103 and the second elastic component 104, for example, the first elastic component 103 and second elastic component 104 can be formed to have the structure etc. of identical development length.
Wherein, optionally, the size of first elastic component 103 less than the second elastic component 104 size, and described first Elastic component 103 is located at the inside of second elastic component 104.Thereby, it is possible to make thrust structure 102 and/or assist motor 101 It easily drives the first elastic component 103 and the second elastic component 104 synchronously to compress along axial direction, while brake pedal can also be made The overall structure of simulator minimizes.But it's not limited to that for the disclosure, can design the first elastic component according to actual needs 103 and second elastic component 104 arragement construction, for example, the size of the first elastic component 103 can be greater than second elastic component 104 Size, and the second elastic component 104 can penetrate through the inside for being arranged in the first elastic component 103.
Optionally, described one end of first elastic component 103 and the overlapped part of second elastic component 104 passes through First spring base 110 cooperates with the thrust structure 102, and the screw mechanism 106 connect or supports with first spring base 110 It connects, second spring seat 111, the other end branch of first elastic component 103 is provided on the other end of second elastic component 104 On the second spring seat 111, described one end of first spring base 110 can be relative to the second spring seat for support 111 along the axial movement.Here, optionally, as shown in Figure 1, first spring base 110 may include the first flange 115 With from first flange 115 along the first axially extending extension rod 117, the power-assisted screw rod 1061 of the screw mechanism 106 It is connected to first flange 115, the second spring seat 111 is including the second flange 116 and from second flange 116 along described The second axially extending extension rod 118, first extension rod 117 are axially movably set in second extension along described In bar 118, the position between first flange 115 and second extension rod 118 is arranged in first elastic component 103, The position between first flange 115 and second flange 116 is arranged in second elastic component 104.Wherein, the first bullet Property part 103 development length less than the second elastic component 104 development length, at this point, the other end of the first elastic component 103 is along axial It is connected on the second extension rod 118 of second spring seat 111, is driven as a result, by thrust structure 102 and/or assist motor 101 During first spring base 110 compresses the first elastic component 103 and the second elastic component 104, it can guarantee 103 He of the first elastic component Second elastic component 104 synchronously realizes compression.In addition, when the development length of the first elastic component 103 and prolonging for the second elastic component 104 Elongation is identical and the two i.e. both ends of the first elastic component 103 and the second elastic component 104 completely overlapped in the axial direction in the axial direction In the case where being aligned respectively, the other end of the first elastic component 103 can directly be connected to the second flange of second spring seat 111 On 116, and the second extension rod 118 be then located at the first elastic component 103 and the second elastic component 104 inside and with the first extension rod 117 are movably coupled to.The first spring base 110 is made to drive the first elastic component 103 and the by reasonable arragement construction as a result, Two elastic components 104 are neatly moved relative to second spring seat 111.But it's not limited to that for the disclosure, can be according to the first bullet The specific arragement construction of property part 103 and the second elastic component 104 comes the first spring base of reasonable design 110 and second spring seat 111 Structure.For example, working as development length and first elastic component of the development length less than the second elastic component 104 of the first elastic component 103 In the case that 103 is Chong Die with the mid portion of the second elastic component 104, that is, the both ends of the first elastic component 103 are respectively positioned on the second elasticity When position between the both ends of part 104, may be used also between the first flange 115 and the first extension rod 117 of first spring base 110 With the prominent stage portion that is formed with one end for abutting the first elastic component 103, and the other end of the first elastic component 103 then can be with It is connected on the second extension rod 118 of second spring seat 111.It is also can be realized as a result, through thrust structure 102 and/or power-assisted First spring base of the driving of motor 101 110 compresses the function of the first elastic component 103 and the second elastic component 104 simultaneously.
Optionally, as shown in Figures 1 to 4, one end that first spring base 110 corresponds to the thrust structure 102 is set It is equipped with multiple connecting rods 112 along described axially projecting and circumferentially spaced arrangement, multiple connecting rods 112 and the thrust structure 102 cooperations, position of the screw mechanism 106 between first spring base 110 and the thrust structure 102.As a result, So that the arragement construction between assist motor 101, screw mechanism 106 and the first elastic component 103 and the second elastic component 104 is compact And it is easy to implement modularized design.But it's not limited to that for the disclosure, and the screw mechanism 106 can be arranged in second spring seat 111 sides far from the first spring base 110, and screw mechanism 106 by the first spring base 111 and the first elastic component 103 and Second elastic component 104 cooperates and can move along the direction of axial synchronous compression.Thereby, it is possible to convenience and it is easily achieved screw machine Structure 106 synchronously compresses the function of the first elastic component 103 and the second elastic component 104 along axial direction.In addition, for the first spring base 110 connecting rod 112 and the fit form of thrust structure 102 can use various structures, such as can be connected through a screw thread mode To realize.And by the way of being threadedly coupled, it can be by adjusting the position of the threaded connection part of connecting rod 112 To adjust the pedal preset force and slack of pedal of brake pedal 100.But it's not limited to that for the disclosure, can also be by adopting The first spring base 110 and thrust structure 102 are connected in other ways.In addition, multiple connecting rods 112 can also be by using bolt etc. Fastener and be connected to the first spring base 110, or integral structure can be formed directly as with the first spring base 110.
Optionally, the thrust structure 102 includes being articulated with the first distance rod 1021 of the brake pedal 100 and passing through Hinged seat 1024 is articulated with first distance rod 1021 and first spring base 110 can be driven along the of the axial movement Two distance rods 1022, the hinged seat 1024 are formed as U-shaped seat, are respectively formed with hinge hole on the both side plate of the hinged seat 1024 1025, second distance rod 1022 penetrates through the bottom plate 1026 of the hinged seat 1024 and by being arranged on the bottom plate 1026 Nut 1027 be threaded on the bottom plate 1026 with can be along axially adjustable position.Wherein, the second distance rod 1022 passes through Hinge hole 1025 on hinged seat 1024 and the first distance rod 1021 are hinged, in addition, by nut 1027 on bottom plate 1026 with Second distance rod 1022 is threadedly engaged and can adjust the pedal preset force and slack of pedal of brake pedal 100.But the disclosure It's not limited to that, can also adjust the pedal preset force and slack of pedal of brake pedal 100 by other forms herein, For example, the first distance rod 1021 or the second distance rod 1022 can be arranged to stretching structure that is axially retractable and positioning (such as can be the structure of the loop bar being mutually threadedly engaged and the casing being set on loop bar outer peripheral surface) be to pass through flexible side Formula adjusts pedal preset force and slack of pedal.For another example, ground is referred to as described above, passes through thrust structure 102 and the first spring The connecting rod of seat 110 realizes adjustment pedal preset force and slack of pedal using form is threadedly engaged.And above-mentioned deformation implementation side Formula can be adapted in other three kinds of embodiments.
Optionally, second distance rod 1022 is formed as ball stud, and the thrust structure 102 further includes and described The butt joint 1028 of 1023 ball pair of the bulb connection of two distance rods 1022, and connect with first spring base 110 and with institute The push-plate 1029 of the cooperation of butt joint 1028 is stated, the screw mechanism 106 is arranged in the push-plate 1029 and first elastic component On position between 103.Wherein, push-plate 1029 can be located on the through-hole inner peripheral surface of department of assembly 105, and butt joint 1028 can pass through It wears push-plate 1029 and is positioned by fasteners such as nuts, here, optionally, being formed on the push-plate 1029 for for described right The perforative through-hole of connector 1028 is formed in the butt joint 1028 and is connected to the push-plate 1029 close to the butt joint 1028 Side U-shaped pressing plate 10281.As a result, after butt joint 1028 and push-plate 1029 are assembled and positioned, U-shaped pressing plate 10281 is abutted Push-plate 1029 corresponds to the side of the second distance rod 1022, so as to steadily push push-plate 1029 by U-shaped pressing plate 10281 So that the first elastic component 103 and the second elastic component 104 that are connect by the first spring base 110 with the push-plate 1029 are along axial pressure Contracting.As described above, when driver's brake pedal 100 brings it about change in displacement, the first distance rod 1021, the second thrust Bar 1022, butt joint 1028, push-plate 1029 are also subjected to displacement variation therewith, and by the bulb 1023 of the second distance rod 1022 with The ball pair of butt joint 1028 cooperates, and the second distance rod 1022 is enabled to adapt to angle change, prevents from occurring with butt joint 1023 Movement interference phenomenon.But it's not limited to that for the disclosure, and herein also optionally, the bulb 1023 can be with butt joint 1028 Cambered surface cooperation, and the radius of curvature of bulb 1023 is less than the song that butt joint 1028 corresponds to the arc mating surface of the bulb 1023 Rate radius.Allow the bulb 1023 of the second distance rod 1022 and the arc mating surface of butt joint 1028 in the appropriate range as a result, Relative motion occurs and makes between brake pedal 100, thrust structure 102, the first elastic component 103 and the second elastic component 104 Transmission process it is more smooth.For another example, the second distance rod 1022 and butt joint 1028 can using universal joint type of attachment or The form of the end face of butt joint 1028 is directly connected to using the second distance rod 1022.It should be noted that butt joint 1028 and the fit structure of push-plate 1029 be to be able to more reliably drive the first elastic component 103 and the second elastic component 104, And the case where can be realized above-mentioned purpose and in the case where not conflicting, it can be suitable to the arragement construction of thrust structure 102 Locality changes, and this change belongs in the interest field of the disclosure.
Optionally, the output shaft 1011 of the assist motor 101 is connect by transmission mechanism with the screw mechanism 106. Here, transmission mechanism can use the structure of various reasonable, with can be by the output torque of assist motor 101 with transmission appropriate Than passing to screw mechanism 106, so that screw mechanism 106 reliably drives the first elastic component 103 and the second elasticity Part 104 is synchronously compressed along axial direction, and then the quickly and accurately pedal force and pedal travel of simulating brake pedal 100.
Optionally, the transmission mechanism include the deceleration mechanism being connect with the output shaft 1011 of the assist motor 101, with The deceleration mechanism output end connection transmission gear 113, the screw mechanism 106 include with first elastic component 103 and The power-assisted screw rod 1061 of the one end fits of the overlapped part of second elastic component 104, and it is mounted on the power-assisted screw rod 1061 Outer peripheral surface on and be formed with the power-assisted gear 1062 of the internal screw thread being threadedly engaged with the power-assisted screw rod 1061, the driving cog Wheel 113 is engaged by idle pulley 114 with the power-assisted gear 1062.Here, power-assisted screw rod 1061 can be directly connected to or be connected to The form of first spring base 110 and the first elastic component 103 and the second elastic component 104 cooperate, the output of assist motor 101 as a result, Torque pass sequentially through deceleration mechanism, transmission gear 113, power-assisted gear 1062 and pass to power-assisted screw rod 1061, and power-assisted screw rod 1061 driving force then passes through the first spring base 110 and passes to the first elastic component 103 and the second elastic component 104, so as to make It obtains the first elastic component 103 and the second elastic component 104 is synchronously compressed along axial direction.
Here, deceleration mechanism can use the structure of various reasonable, such as turbine worm reducer structure, gear can be used Secondary deceleration mechanism or other reasonable structures, thus, it is possible to make the power-assisted gear 1062 of screw mechanism obtain transmission ratio appropriate And make the power-assisted screw rod 1061 engaged with the power-assisted gear 1062 with the first elastic component of drive force 103 and second appropriate Elastic component 104 is axially compressed.Optionally, the transmission matching mechanism further includes deceleration mechanism, the assist motor 101 it is defeated Shaft 1011 is connect by the deceleration mechanism with the gear shaft 1061.Here, the deceleration mechanism can be using a variety of suitable When structure, such as can be using gear pair deceleration mechanism, turbine and worm decelerator, planet gear reducing mechanism etc..Here, such as Shown in Fig. 1, optionally, the deceleration mechanism is planet gear reducing mechanism 107, in the planet gear reducing mechanism 107, sun gear 1071 connect with the output shaft 1011 of the assist motor 101, planet carrier 1072 as the deceleration mechanism output end and with The wheel axis connection of the transmission gear 113, gear ring 1073 are fixed in the shell 120 of the brake pedal simulator.Here, row The planetary gear 1074 engaged with sun gear 1071 and gear ring 1073 is provided in star wheel reducer structure 107, in planetary gear 1074 The heart is provided with planet carrier 1072.The output torque of assist motor 101 passes through the 107 deceleration increment of planet gear reducing mechanism as a result, Power-assisted screw rod 1061 is passed to by by transmission gear 113, idle pulley 114, power-assisted gear 1062.That is, the output of assist motor 101 Torque is after sun gear 1071, planetary gear 1074 and planet carrier 1072, via transmission gear 113, idle pulley 114 and power-assisted gear 1062 pass to power-assisted screw rod 1061 so that power-assisted screw rod 1061 be axially moveable during the first elastic component 103 of driving and the Two elastic components 104 synchronously compress.By using planet gear reducing mechanism 107, since planet gear reducing mechanism 107 has in itself Light-weight and small in size feature, so that brake pedal simulator has total quality light and characteristics of compact layout.In addition, passing through Planet gear reducing mechanism 107, which is arranged, can effectively improve the transmission efficiency of assist motor 101.
Optionally, the brake pedal simulator further includes the control for controlling the working condition of the assist motor 101 The sensor 109 of device 108 processed and the revolving speed for detecting the assist motor 101.Wherein, sensor 109 can be set On the output shaft of assist motor 101, which is electrically connected to controller 108.As a result, in driver's brake pedal When 100, thrust structure 102 drives the first elastic component 103 and the second elastic component 104 axially simultaneously to compress, thrust structure 102 by To the first elastic component 103 and the second opposition that cooperation provides jointly of elastic component 104, and when this opposition acts on When the brake pedal force of brake pedal 100 reaches preset value, the control starting assist motor 101 of controller 108 makes its output Torque is transmitted to the first elastic component 103 by planet gear reducing mechanism 107 and screw mechanism 106 and the second elastic component 104 is Brake pedal 100 and thrust structure 102 provide power-assisted, here, synchronously driving the first elastic component 103 by screw mechanism 106 It is axially compressed with the second elastic component 104, so that 102 further occurrence change in displacement of brake pedal 100 and thrust structure, and And due to screw mechanism 106 bear to be cooperated jointly from the first elastic component 103 and the second elasticity 104 and the reversed work of a part that provides Firmly, the opposition being subject to thus, it is possible to reduce thrust structure 102, so that brake pedal 100 obtains suitable braking and steps on Plate power, so as to simulate the pedal force of brake pedal 100 and the target value of pedal travel.Wherein, sensor 109 is for real When detection assist motor 101 revolving speed and controller 108 can be fed back in real time can monitor brake pedal in real time 100 pedal travel, thus, it is possible to improve the functional reliability of brake pedal simulator.
Optionally, as shown in figure 5, the brake pedal simulator includes shell 120, which includes the assembly Portion 105, is used for the first shell portion 1201 for accommodating the screw mechanism 106 (and transmission gear 113 and idle pulley 114) Accommodate the second shell portion 1202 of the assist motor 101 and for accommodating first elastic component 103 and second bullet The third housing section 1203 of property part 104, the end abutment of second elastic component 104 is in the inner end wall of third housing section 1203. Wherein, the department of assembly 105, first shell portion 1201, second shell portion 1202 and third housing section 1203 are interconnected.The One housing section 1201, second shell portion 1202 and third housing section 1203 can be assembled integral by fasteners such as bolts.Separately Outside, it could be formed in the first shell portion 1201 for providing the note of lubricating oil to screw mechanism 106 and transmission mechanism Oilhole.In addition, the department of assembly 105 can be assembled on vehicle body by the fasteners such as bolt 1051, brake pedal 100 reveals at this time For in driver's cabin, and thrust structure 102 selectively can partially be exposed to driver's cabin according to the actual situation, in order to operate And make brake pedal simulator smaller in the shared installation space in enging cabin.In addition, can be set in department of assembly 105 The dust cover 1204 in the portion perimeter face for covering the second distance rod 1022 is equipped with to play sealing and dust-proof effect.Pass through Structure as described above makes brake pedal simulator have the effect of characteristics of compact layout and realizes modularized design.But the disclosure is simultaneously It is not limited to this, it can be according to the arragement construction of brake pedal simulator come the structure of reasonably shell 120.
Above content combination Fig. 1 to Fig. 5 describes the structure of the brake pedal simulator in first embodiment, is not taking off From under present inventive concept, feature such as brake pedal structure, the first distance rod, the second distance rod in first embodiment etc. is equal It can be applied in following other embodiments.Referring to the drawings 12 to Figure 15, first to in above-mentioned first embodiment It is described in detail using the third embodiment of the identical arragement construction of the series system of the first elastic component and the second elastic component.
As shown in figure 12, a kind of brake pedal simulator is provided according to the third specific embodiment of the disclosure, the braking Pedal simulator includes brake pedal 300, assist motor 301, the department of assembly 305 for being assembled on vehicle body, axially disposed Side and first elastic component 303 and second elastic component at least partly overlapped along the axial direction in the department of assembly 305 304, be articulated with the brake pedal 300 and with first elastic component 303 and the overlapped part of second elastic component 303 One end fits first elastic component 303 and second elastic component 304 can be driven simultaneously along the axial stretching Thrust structure 302, first elastic component 303 and second elastic component 304 are matched jointly to be mentioned combined into the brake pedal 300 For pedal preset force, the output shaft 3011 of the assist motor 301 passes through gear and rack teeth mechanism 306 and first elastic component 303 and the overlapped part of second elastic component 304 the one end fits, can be that the thrust structure 302 provides Power-assisted.Wherein, the first elastic component 303 and the second elastic component 304 are as the pedal force of brake pedal 300 and the simulation of pedal travel Element, in the initial state (in the case where i.e. non-brake pedal 300), the first elastic component 303 and the second elastic component 304 are In compressive state to provide pedal preset force for brake pedal 300, wherein in the first elastic component 303 and the second elastic component 304 One of failure in the case where wherein another one still be able to so that brake pedal 300 keeps normal pedal force, to improve system The security performance of dynamic pedal simulator.
Specifically, in driver's brake pedal 300, thrust structure 302 drives the first elastic component 303 and the second bullet Property part 304 axially simultaneously compress, by the first elastic component 303 and the second elastic component 304, cooperation provides thrust structure 302 jointly Opposition, and when the brake pedal force that this opposition acts on brake pedal 300 reaches preset value, starting Assist motor 301 makes its output torque be converted into the first elastic component of driving 303 and the second elasticity by gear and rack teeth mechanism 306 The axially compressed power of part 304 and be that brake pedal 300 and thrust structure 302 provide power-assisted, specifically, gear and rack teeth mechanism One end of at least overlapped part of 306 the first elastic components 303 of driving and the second elastic component 304 is synchronously carried out pressure along axial direction Contracting, so that 302 further occurrence change in displacement of brake pedal 300 and thrust structure, and since gear and rack teeth mechanism 306 is born A part of opposition provided by the first elastic component 303 and the second elastic component 304, thus, it is possible to reduce thrust structure 302 The opposition being subject to, so that brake pedal 300 obtains suitable brake pedal force, so as to simulate brake pedal 300 pedal force and the target value of pedal travel.Here, working as assist motor 301, gear and rack teeth mechanism 306, the first elastic component 303 or second the equal component malfunctions of elastic component 304 and when can not work normally, pass through the first elastic component not broken down 303 and/or second elastic component 304 for brake pedal 300 provides based-pedal power and also can be realized the braking of brake pedal 300 Feel, so as to continue to implement braking, keeps braking function.In addition, when driver discharges brake pedal 300, power-assisted electricity 301 power loss of machine and make the first elastic component 303 and the second elastic component 304 realize self-return by the elastic-restoring force of itself. The characteristic of simulating brake pedal 300 is realized by brake control method as described above, and passes through assist motor 301 and tooth Take turns rackwork 306 cooperation come replace existing hydraulic braking component and make brake pedal simulator be not only simple in structure and The influence of hydraulic many factors in such as existing is not will receive, operational stability is good, brake pedal response is rapid to have And other effects.In addition, though transmission matching mechanism uses gear and rack teeth mechanism 306 in the present embodiment, but the disclosure is not It is defined in this, the transmission matching mechanism can use other reasonable arragement constructions.
Optionally, first elastic component 303 and second elastic component 304 are helical spring.Thus, it is possible to by pushing away The driving force that power structure 302 and/or assist motor 301 act on makes quick and sensitive reaction and stretches.But this is not limited The scope of the present disclosure can guarantee brake pedal 300, thrust structure 302, assist motor 301 and gear and rack teeth mechanism 306 Cooperation is come in the case where driving the first elastic component 303 and the second elastic component 304 flexible, first elastic component 303 and the second bullet Property part 304 can use various reasonable structure.
Optionally, the development length of first elastic component 303 is in the axial direction less than second elastic component 304 Development length, and described one end of first elastic component 303 and the overlapped part of second elastic component 304 is in the axis Alignment upwards.Above-mentioned technical characteristic and function and effect are identical as technical characteristic corresponding in first embodiment and function and effect, Herein in order to avoid repeating, detailed description thereof is omitted.But it's not limited to that for the disclosure, can be according to actual elastic rigidity Demand specifically to arrange the structure of the first elastic component 303 and the second elastic component 304, for example, the first elastic component 303 and the second bullet Property part 304 can be formed to have the structure etc. of identical development length.
Optionally, the size of first elastic component 303 less than the second elastic component 304 size, and it is described first elasticity Part 303 is located at the inside of second elastic component 304.Thereby, it is possible to make 301 convenience of thrust structure 302 and/or assist motor Ground drives the first elastic component 303 and the second elastic component 304 synchronously to compress along axial direction, while can also brake pedal be simulated The overall structure of device minimizes.But it's not limited to that for the disclosure, can design 303 He of the first elastic component according to actual needs The arragement construction of second elastic component 304, for example, the size of the first elastic component 303 can be greater than the size of the second elastic component 304, And the second elastic component 304 can penetrate through the inside for being arranged in the first elastic component 303.
Optionally, described one end of first elastic component 303 and the overlapped part of second elastic component 304 passes through First spring base 310 cooperates with the thrust structure 302, the first end of the rack gear 3062 of the gear and rack teeth mechanism 306 and institute It states the connection of the first spring base 310 or abuts, be provided with second spring seat 311 on the other end of second elastic component 304, it is described The other end of first elastic component 303 is supported on the second spring seat 311, one end energy of first spring base 310 Enough relative to the second spring seat 311 along the axial movement.Here, optionally, first spring base 310 includes first Flange 312 and from first flange 312 along the first axially extending extension rod 313, described the first of the rack gear 3062 End is connected to first flange 312, and the second spring seat 311 is including the second flange 314 and from second flange 314 along institute State the second axially extending extension rod 315, first extension rod 313 is axially movably set in described second and prolongs along described In boom 315, the position between first flange 312 and second extension rod 315 is arranged in first elastic component 303 It sets, the position between first flange 312 and second flange 314 is arranged in second elastic component 304.Wherein, The development length of one elastic component 303 less than the second elastic component 304 development length, at this point, the other end edge of the first elastic component 303 It is axially connected on the second extension rod 318 of second spring seat 311, passes through thrust structure 302 and/or assist motor 301 as a result, During driving the first spring base 310 to compress the first elastic component 303 and the second elastic component 304, it can guarantee the first elastic component 303 and second elastic component 304 synchronously realize compression.In addition, when the development length and the second elastic component of the first elastic component 303 304 development length is identical and the two i.e. both ends of the first elastic component 303 and the second elastic component 304 completely overlapped in the axial direction exist In the case where being aligned respectively in axial direction, the other end of the first elastic component 303 can directly be connected to the second of second spring seat 311 On flange 316, and the second extension rod 318 is then located at the inside of the first elastic component 303 and the second elastic component 304 and extends with first Bar 317 is movably coupled to.The first spring base 310 is made to drive 303 He of the first elastic component by reasonable arragement construction as a result, Second elastic component 304 is neatly moved relative to second spring seat 311.But it's not limited to that for the disclosure, can be according to first The specific arragement construction of elastic component 303 and the second elastic component 304 comes the first spring base of reasonable design 310 and second spring seat 311 structure.For example, working as development length and first elasticity of the development length less than the second elastic component 304 of the first elastic component 303 In the case that part 303 is Chong Die with the mid portion of the second elastic component 304, that is, the both ends of the first elastic component 303 are respectively positioned on the second bullet Property part 304 both ends between position when, between the first flange 315 and the first extension rod 317 of first spring base 310 also It can protrude and be formed with stage portion with one end for abutting the first elastic component 303, and the other end of the first elastic component 303 then may be used To be connected on the second extension rod 318 of second spring seat 311.It also can be realized through thrust structure 302 and/or help as a result, First spring base of the driving of force motor 301 310 compresses the function of the first elastic component 303 and the second elastic component 304 simultaneously.
Optionally, as shown in figure 12, the thrust structure 302 includes being articulated with the first thrust of the brake pedal 300 It bar 3021 and is articulated with first distance rod 3021 and first spring base 310 can be driven along the second of the axial movement The second end of distance rod 3022, second distance rod 3022 and the rack gear 3062 cooperates.Here, the second distance rod 3022 can be with It is connected to the second end of rack gear 3062, or also can connect in the second end of rack gear 3062, wherein when the second distance rod 3022 In the case where the second end for being connected to rack gear 3062, the second distance rod 3022 can pass through the first bullet in the case where stopping braking The elastic-restoring force of property part 303 and the second elastic component 304 and be returned to initial position.Here, optionally, the rack gear 3062 The first end is formed with the first mating flanges 316 abutted with first spring base 310, and the second end is formed with and institute State the second mating flanges 317 of the second distance rod 3022 cooperation.Pass through the gear and rack teeth mechanism 306 of structure as described above as a result, Can steadily and reliably realize thrust structure 302 and the first spring base 310, the first elastic component 303 and the second elastic component 304 it Between power transmitting.But it's not limited to that for the disclosure, and the rack gear 3062 can also pass through other reasonable structures and first Spring base 310 and the cooperation of the second distance rod 3022, such as the both ends of the rack gear 3062 are directly connected in the second distance rod 3022 The first mating flanges 316 and the second mating flanges 317 are not formed with the first spring base 310, this equally also can be realized and pushes away Power transmitting between power structure 302, the first spring base 310, the first elastic component 303 and the second elastic component 304.
Optionally, second distance rod 3022 is formed as ball stud, the bulb 3023 of second distance rod 3022 with Second mating flanges, the 317 cambered surface cooperation.As a result, when driver's brake pedal 300 brings it about change in displacement, the One distance rod 3021 and the second distance rod 3022 are also subjected to displacement variation therewith, and pass through the bulb 3023 of the second distance rod 3022 Cooperate with the cambered surface of the first spring base 310, enables to the second distance rod 3022 to adapt to angle change, prevent movement interference Phenomenon.Optionally, the radius of curvature of the bulb 3023 is less than the curvature half of the arc mating surface of second mating flanges 317 Diameter.Allow the bulb 3023 of the second distance rod 3022 and the arc mating surface of the second mating flanges 317 in the appropriate range as a result, Relative motion occurs and makes between brake pedal 300, thrust structure 302, the first elastic component 303 and the second elastic component 304 Transmission process it is more smooth.But it's not limited to that for the disclosure, between thrust structure 302 and the secondth mating flanges 317 Fit form can use other reasonable structures, such as the second distance rod 3022 and the first spring base 310 that can use ball pair Fit form, universal joint type of attachment are directly connected to the straight of the second mating flanges 317 using the second distance rod 3022 The form of end face.
Optionally, as shown in figure 13, the hinged end of second distance rod 3022 is provided with is threadedly coupled with the hinged end U-shaped hinged seat 3024, be respectively formed with hinge hole 3025, second distance rod on the both side plate of the hinged seat 3024 The bottom plate 3026 and the nut 3027 by being arranged on the bottom plate 3026 of the 3022 perforation hinged seats 3024 are threadedly coupled With can be along axially adjustable position on the bottom plate 3026.Wherein, the second distance rod 3022 passes through hinged on hinged seat 3024 Hole 3025 and the first distance rod 3021 are hinged, in addition, passing through 3022 screw thread of nut 3027 and the second distance rod on bottom plate 3026 Cooperate and can adjust the pedal preset force and slack of pedal of brake pedal 300.But it's not limited to that for the disclosure, herein The pedal preset force and slack of pedal of brake pedal 300 can be adjusted by other forms, for example, can be by the first thrust It (such as can be mutual screw thread that bar 3021 or the second distance rod 3022, which are arranged to stretching structure that is axially retractable and positioning, The structure of the loop bar of cooperation and the casing being set on loop bar outer peripheral surface) by by adjust in a manner of flexible pedal preset force and Slack of pedal.And this variant embodiment can be adapted in other embodiments.Optionally, second distance rod 3022 are arranged with locking seat 3028, circumferentially spaced cloth on the outer peripheral surface of the locking seat 3028 close to the part of the bulb 3023 It is equipped with axially extending multiple locking protrusions 3029, first spring base 310 one end shape corresponding with the locking seat 3028 The locking groove 3101 of the cooperation of locking protrusion 3029 described in Cheng Youyu.Here, locking seat 3028 can be with the second distance rod 3022 Outer peripheral surface clearance fit, so as to avoid locking seat 3028 interfere the second distance rod 3022 with brake pedal 300 and first Movement caused by the change in location of distance rod 3021.As described above, passing through the locking protrusion and the first spring of locking seat 3028 Seat 310 locking groove 3101 engaging and can reliably connect the second distance rod 3022 and the first elastic component 303.But this public affairs Open that it's not limited to that, the fit form between the thrust structure 302 and the first elastic component 303 can be reasonable using other Structure.
Optionally, the gear and rack teeth mechanism 306 includes gear shaft 3061 and rack gear 3062, the gear shaft 3061 and institute It states the connection of output shaft 3011 of assist motor 301 and is provided with the power-assisted gear 3063 engaged with the rack gear 3062, the tooth The first end of item 3062 and described one end of first elastic component 303 and the overlapped part of second elastic component 304 are matched It closes, the second end of the rack gear 3062 and the thrust structure 302 cooperate.Here, for rack gear 3062 and thrust structure 302 and The connection type of first spring base 310 can be using as described above by the first mating flanges 316 and the second mating flanges 317 Structure realize cooperation mode.The disclosure is not particularly limited, if enable to rack gear 3062 by with power-assisted gear 3063 engage and receive the power output from assist motor 301, or pass through thrust structure 302 and receive stepping on from brake pedal Plate power is synchronously compressed i.e. so that rack gear 3062 is able to drive the first elastic component 303 and the second elastic component 304 along axial direction It can.
Optionally, the output shaft 3011 of the assist motor 301 is connect by deceleration mechanism with the gear shaft 3061.? This, the deceleration mechanism can use a variety of structures appropriate, such as can be slowed down using gear pair deceleration mechanism, worm and gear Mechanism, planet gear reducing mechanism etc..Optionally, the deceleration mechanism is planet gear reducing mechanism 307, the planet gear reducing mechanism In 307, sun gear 3071 is connect with the output shaft 3011 of the assist motor 301, planet carrier 3072 and the gear shaft 3061 Connection, gear ring 3073 are fixed in the shell 320 of the brake pedal simulator.Wherein, it is arranged in planet gear reducing mechanism 307 There is the planetary gear 3074 engaged with sun gear 3071 and gear ring 3073, planetary gear 3074 is provided centrally with planet carrier 3072.By This, the output torque of assist motor 301 is transmitted after the 307 deceleration increment of planet gear reducing mechanism by power-assisted gear 3063 To rack gear 3062.That is, the output torque of assist motor 301 is after sun gear 3071, planetary gear 3074 and planet carrier 3072, via Power-assisted gear 3063 on the gear shaft 3061 being connect by forms such as key, spline connections with planet carrier 3072 passes to tooth Item 3062, so that rack gear 3062 drives the first elastic component 303 and the second elastic component 304 synchronously to stretch during being axially moveable Contracting.By using planet gear reducing mechanism 307, since planet gear reducing mechanism 307 itself has light-weight and small in size spy Point, so that brake pedal simulator has total quality light and characteristics of compact layout.In addition, passing through setting planet gear reducing mechanism 307 can effectively improve the transmission efficiency of assist motor 301.
Optionally, the assist motor 301, the deceleration mechanism and the gear and rack teeth mechanism 306 are located at the dress Correspond to the side of first elastic component 303 and second elastic component 304 with portion 305.Thus in brake pedal simulator In the state of being assembled to vehicle body using the fasteners such as bolt 3051 by department of assembly 305, assist motor 301, deceleration mechanism and Gear and rack teeth mechanism 306 is reasonably arranged in the confined space of enging cabin, to reach compact-sized and shared installation space The effect of small volume.But it's not limited to that for the disclosure, and position relationship between above-mentioned component is not conflicting In the case of can neatly change, and these variations are all fallen in the interest field of the disclosure.
Optionally, as shown in figure 12, the department of assembly 305 close to the gear and rack teeth mechanism 306 rack gear 3062 one Side is provided with the displacement sensor 318 of the displacement for detecting the rack gear 3062.Wherein, which can consolidate It is scheduled in department of assembly 305, and is provided with the one of the first elastic component 303 of direction and the second elastic component 304 on the displacement sensor 318 Side installation base outstanding, mounting hole 3181 is formed on the installation base, and the gear shaft 3061 of gear and rack teeth mechanism 306 supports On the mounting hole 3181, thus, it is possible to realize reliable location.By structure as described above, that is, pass through displacement sensor 318 The change in displacement of the rack gear 3062 of real-time detection gear and rack teeth mechanism 306, thus, it is possible to make the rack gear of gear and rack teeth mechanism 306 3062 receive the driving force from assist motor 301 and/or the offer of thrust structure 302 and drive the first elastic component 303 and second Elastic component 304 is synchronously compressed along axial direction, so that brake pedal simulator accurately simulates the pedal of brake pedal 300 The target value of power and pedal travel.
Optionally, the brake pedal simulator further includes the control for controlling the working condition of the assist motor 301 The sensor 309 of device 308 processed and the revolving speed for detecting the assist motor 301.Wherein, sensor 309 can connect in On the output shaft of assist motor 301, such as assist motor can be connected to by the gear shaft 3061 of gear and rack teeth mechanism 306 301 output shaft.Specifically, the sensor 309 can be set in gear shaft 3061 back in the output shaft 3011 End and the sensor 309 can integrate on the controller 308 and be electrically connected to controller 308.Wherein, the power-assisted Motor 301, planet gear reducing mechanism 307 can be located at the side of the gear and rack teeth mechanism 306, the sensor 309 and control Device 308 processed is located at the other side of gear and rack teeth mechanism 306, so that the structure arrangement of brake pedal simulator is more reasonable.Pass through Structure as described above, in driver's brake pedal 300, thrust structure 302 drives the first elastic component 303 and the second bullet Property part 304 axially simultaneously compress, by the first elastic component 303 and the second elastic component 304, cooperation provides thrust structure 302 jointly Opposition, and when the brake pedal force that this opposition acts on brake pedal 300 reaches preset value, control The control starting assist motor 301 of device 308 makes its output torque pass through planet gear reducing mechanism 307 and gear and rack teeth mechanism 306 It is transmitted to the first elastic component 303 and the second elastic component 304 and is that brake pedal 300 and thrust structure 302 provide power-assisted, here, Synchronously drive the first elastic component 303 and the second elastic component 304 axially compressed by gear and rack teeth mechanism 306, so that system Dynamic 302 further occurrence change in displacement of pedal 300 and thrust structure, and since gear and rack teeth mechanism 306 is born by the first bullet Property part 303 and second elasticity 304 jointly cooperate and provide a part of opposition, thus, it is possible to reduce thrust structure 302 The opposition being subject to, so that brake pedal 300 obtains suitable brake pedal force, so as to simulate brake pedal 300 pedal force and the target value of pedal travel.Wherein, revolving speed and energy of the sensor 309 for real-time detection assist motor 301 Enough feedbacks in real time can monitor the pedal travel of brake pedal 300 to controller 308 in real time, herein can by with The displacement sensor 318 for capableing of the change in displacement of real-time detection thrust structure 302 as described above cooperates, and can be more The pedal force of brake pedal 300 and the target value of pedal travel are accurately simulated, thus, it is possible to further increase brake pedal The functional reliability of simulator.In addition, here, displacement sensor 318 may be electrically connected to controller 308, or can also electricity The brak control unit being connected in other control units such as brake system of car, to by displacement sensor 318 and pass Sensor 309 is realized while detecting the function of the displacement of rack gear 3062 and the revolving speed of assist motor 301, so that the system simulated The deviation of the target value of the pedal force and pedal travel of dynamic pedal 300 minimizes.
Optionally, as shown in Figure 14 and Figure 15, the brake pedal simulator includes shell 320, which includes institute State department of assembly 305, for accommodating first elastic component 303, the gear and rack teeth mechanism 306 and second elastic component 304 First shell portion 3201, the second shell portion 3202 for accommodating the assist motor 301, deceleration mechanism etc., and be used for Accommodate the third housing section 3203 of controller 308 and sensor 309, wherein the end abutment of the second elastic component 304 is in first shell The inner end wall in body portion 3201, thrust structure 302 are then exposed to first shell portion 3201 and department of assembly 305.The wherein assembly Portion 305, first shell portion 3201, second shell portion 3202 and third housing section 3203 are interconnected.First shell portion 3201, Second shell portion 3202 and third housing section 3203 can be assembled integrally by fasteners such as bolts, and second shell portion 3202 and third housing section 3203 can be located at first shell portion 3201 opposite side.In addition, department of assembly 305 can be assemblied in In one housing section 3201, or it can also be integrally formed with first shell portion 3201.The department of assembly 305 can pass through bolt etc. Fastener 3051 is assembled on vehicle body, and brake pedal 300 is exposed in driver's cabin at this time, and thrust structure 302 can be according to reality Border situation is selectively partially exposed to driver's cabin, in order to operate.In addition, can be set in department of assembly 305 for covering The dust cover 3204 in the portion perimeter face of the second distance rod of lid 3022 is to play sealing and dust-proof effect.By as described above Structure makes brake pedal simulator have the effect of characteristics of compact layout and realizes modularized design.But the disclosure is not limited to This, can be according to the arragement construction of brake pedal simulator come the structure of reasonable design shell 320.
Above content combination Figure 12 to Figure 15 describes the structure of the brake pedal simulator in third embodiment, not The feature of present embodiment and first embodiment can be replaced mutually, combine in contradictory situation, to this disclosure to this not It does and excessively repeats.
Above-mentioned two specific embodiment has been all made of the arrangement of the first elastic component and the second springs in series, below The arrangement of the first elastic component and the second resilient element connected in parallel is used in two specific embodiments.
Firstly, firstly, disclosing a kind of following brake pedal simulation according to second embodiment and the 4th embodiment Device.The brake pedal simulator includes brake pedal, thrust structure and multiple elastic components, the part bullet in multiple elastic components Property part provides pedal preset force for the brake pedal, the thrust structure be articulated with the brake pedal and with the part bullet Property part cooperation with for successively driving the partial elastic part in multiple elastic components and remaining elastic component axially retractable, The brake pedal simulator has the first working condition and the second working condition, under first working condition, the portion Elastic component is divided to be compressed, under second working condition, the partial elastic part is synchronous with remaining described elastic component to be compressed.
Here, providing pedal preset force for the partial elastic part in multiple elastic components for brake pedal, institute can be passed through State the partial elastic part in multiple elastic components (state of i.e. non-brake pedal) and thrust structure in the initial state Cooperation, and remaining elastic component in multiple elastic components in the initial state first not with thrust structure and/or the partial elastic part The mode of cooperation is realized.After brake pedal, first drive the partial elastic part axially retractable by thrust structure, After brake pedal is moved to default pedal travel, the thrust structure by directly successively cooperate with remaining elastic component (such as Contact etc. fit systems) mode or thrust structure the partial elastic part and remaining elastic component cooperation by way of come Realize the function of driving remaining described elastic component axially retractable.In addition, the above-mentioned successively driving referred to refers to first drive part Elastic component is axially retractable, the driving method for driving remaining elastic component axially retractable again later, wherein for driving remaining bullet During property part is axially retractable, the partial elastic part can be axially retractable together with remaining described elastic component.More Body, when the partial elastic part in multiple elastic components be in multiple and the multiple elastic component described in remaining elastic component In the case where being also multiple, using the partial elastic part as the first elastic module group, using remaining described elastic component as Two elastic module groups, in the case, successively driving is the point on the basis of the first elastic module group and the second elastic module group, i.e., It first drives the first elastic module group axially retractable, drives the second elastic module group axially retractable again later, as the first bullet Between each elastic component in property module group, specific this public affairs of driving method between each elastic component in the second elastic module group It opens and does not limit.For example, each elastic component in the first elastic module group can axially simultaneously be stretched, the second elastic module Each elastic component in group can also axially simultaneously be stretched or the second elastic component module group in each elastic component It can also successively be stretched along axial direction.
By stepping on as described above, the partial elastic part in multiple elastic components provides based-pedal counter-force for brake pedal When lower brake pedal, by successively driving the partial elastic part in multiple elastic components and remaining elastic component axially retractable, thus It is capable of providing the brake feel of reliable brake pedal, thus, it is possible to simulate accurate brake pedal force.In addition, in multiple bullets Property part in remaining described elastic component can be thrust knot by the partial elastic part in multiple elastic components when breaking down The brake feel that structure provides based-pedal counter-force always and is also capable of providing brake pedal is protected so as to continue to implement braking Card braking system remains normal work, keeps braking function.Brake pedal simulator as described above has stable operation Property good, brake pedal it is corresponding rapid and other effects.
Optionally, the brake pedal simulator includes for driving the elastic component further to stretch can be described Thrust structure provides the power assisting device of power-assisted for the driving of the elastic component.Wherein, the power assisting device can use a variety of Structure, such as can be the single structure of the simple telescoping mechanism such as driving cylinders, the jack such as electric cylinder, cylinder, hydraulic cylinder, or Or using a variety of mechanical transmissioning machines such as gear pair, rack-and-pinion, turbine and worm pair, V belt translation pair, screw pair Structure is mutually driven the structural assembly of cooperation, no matter which kind of structure is used, the above-mentioned structure referred to is not limited to herein, as long as can It is embodied as thrust structure and provides the function of power-assisted for the driving of elastic component.
Optionally, the elastic component includes axially disposed the first elastic component and the second elastic component, first elasticity Part provides the pedal preset force, the power assisting device and first elastic component and/or described second for the brake pedal Elastic component cooperation.Wherein, two elastic components are not limited to for the quantity of elastic component, it is reasonable to come according to the actual situation Ground selection.Here, using the parallel form of two elastic components, and two under the driving of thrust structure and/or power assisting device Elastic component can be successively axially compressed, i.e., the first elastic component is first realized along axial compression when initially being driven, and later second Elastic component is axially compressed by driving again, and in the compressed process of the second elastic component, the first elastic component is also with the second elastic component It is compressed together.Specifically, under the driving of thrust structure and/or power assisting device, can pressing in the first elastic component The arrangement for contacting with each other during contracting with the second elastic component and further compressing simultaneously.Although only needle in the foregoing description The process compressed to the first elastic component and the second elastic component is illustrated, but for the first elastic component and the second elastic component By the reverse actuating force opposite with the driving force provided at present, (as thrust structure is for elastic component during compressed The resistance provided is provided) and can also have it from the course of work that current compression is positioned against the direction movement that elastic component stretches In, the structure of various reasonable can be used for the arrangement of two elastic components, it can be axially spaced by two elastic components Arrangement, or the arrangement that two elastic components can also be overlapped along axial component, are not particularly limited this disclosure, can To carry out the arragement construction of specific design flexibility part such as space layout demand according to actual needs.In above description, although needle The arragement construction of two elastic components is described, but one or more elastic component also can be applicable in above-mentioned Parallel way.Such as the elastic component includes the first Flexible element by the circumferentially spaced arrangement of multiple first elastic components and side by side With the second Flexible element by the circumferentially spaced arrangement of multiple second elastic components and side by side.It can also for the elastic component of this structure To be applicable in above-mentioned parallel way.
Optionally, the power assisting device includes assist motor and the assist motor and first elastic component and/or institute The transmission matching mechanism of the second elastic component cooperation is stated, can mention by the driving that the transmission matching mechanism is the thrust structure For power-assisted.Here, the arragement construction of various reasonable can be used for transmission matching mechanism, as long as can be realized assist motor Output torque pass to the first elastic component and/or the second elastic component so that the function of power-assisted can be provided for thrust structure. For example, optionally, the transmission matching mechanism includes screw mechanism or gear and rack teeth mechanism, the output shaft of the assist motor is logical Crossing the screw mechanism or the gear and rack teeth mechanism can cooperate with second elastic component, can be the thrust structure Driving provide power-assisted by the thrust mechanism first elastic component is compressed under first working condition, Under second working condition, by the cooperation of the thrust mechanism and the assist motor so that first elastic component and The second elastic component synchronization is compressed.But the disclosure is not limited to above structure, and in addition to the foregoing structure, the transmission is matched Closing mechanism can also be a variety of knots such as gear auxiliary drive gear, Worm and worm-wheel gearing, tape handler, chain-drive mechanism Structure, or the appropriately combined structure between the above-mentioned various structures being related to.
It is described in detail referring to brake pedal simulator of the Fig. 6 to Figure 11 to the second embodiment of the disclosure.
As shown in fig. 6, a kind of brake pedal simulator is provided according to the second embodiment of the disclosure, the brake pedal mould Quasi- device include brake pedal 200, assist motor 201, the department of assembly 205 for being assembled on vehicle body, be axially disposed in it is described The side of department of assembly 205 and along the first overlapped elastic component 203 of the axial component and the second elastic component 204, be articulated with The brake pedal 200 simultaneously cooperates with first elastic component 203 can successively drive first elastic component 203 and described For second elastic component 204 along the thrust structure 202 of the axial stretching, first elastic component 203 is that the brake pedal 200 mentions For pedal preset force, the output shaft 2011 of the assist motor 201 is matched by screw mechanism 206 with first elastic component 203 Close, can be that the thrust structure 202 provides power-assisted, wherein the brake pedal simulator have the first working condition and Second working condition makes 203 quilt of the first elastic component by the thrust mechanism 202 under first working condition Compression, under second working condition, by the cooperation of the thrust mechanism 202 and the assist motor 201 so that described First elastic component 203 is synchronous with second elastic component 204 to be compressed.
Here, the pedal force and pedal travel of the first elastic component 203 and the second elastic component 204 as brake pedal 200 Analog element, in the initial state (in the case where i.e. non-brake pedal 200), the first elastic component 203 is in compressive state To provide pedal preset force for brake pedal 200, and the second elastic component 204 be in 203 discrete state of the first elastic component and with Power transmitting does not occur between first elastic component 203 and thrust structure 202.In addition, in the first operative state, the first bullet Property part 203 compressed by thrust mechanism 202, and the second elastic component 204 still is in and the identically as the first original state One elastic component, 203 discrete state and do not occur between the first elastic component 203 and thrust structure 202 power transmitting.And Under second working condition, first elastic component 203 and the second elastic component 204 cooperate and are in the state of compression.
Wherein it should be noted that according to the different designs of the rigidity of the first elastic component 203 and the second elastic component 204 and Transition state is likely present between first working condition and the second working condition.For example, smaller in 203 rigidity of the first elastic component In the case where there are First Transition states between the first working condition and the second working condition, that is, only by thrust structure 202 press It contracts during the first elastic component 203 because the first elastic component 203 and the second elastic component 204 occur can to compress the simultaneously due to cooperation The case where two elastic components 204, i.e. thrust structure 202 the first elastic component 203 of common compression and the second elastic component 204, occurs, and this When, assist motor 201 is also inactive.And when the first working condition and second in the biggish situation of rigidity of the first elastic component 203 There are the second transition states between working condition, that is, in the first working condition, compresses the first elastic component by thrust structure 202 203.Assist motor 201 starts during continuing to compress the first elastic component 203, so that thrust structure 202 and assist motor 201 common cooperation and further compress the first elastic component 203, and under second transition state, the first elastic component 203 is also not Cooperate with the second elastic component 204.
Here, being converted to the second working condition via First Transition state from the first working condition to brake pedal simulator The course of work be illustrated.Specifically, as described above, in driver's brake pedal 200, thrust structure 202 is driven First elastic component 203 is axially compressed, and under first working condition, thrust structure 202 is provided by the first elastic component 203 Opposition, this course of work are in the first working condition.And when the first elastic component 203 during compression with the second bullet Property part 204 cooperate, and make thrust structure 202 jointly driving the first elastic component 203 and the second elastic component 204 compression, at this point, pushing away Power structure 202 is by the first elastic component 203 and the second elastic component 204 cooperates jointly and the opposition of offer, at this process In First Transition state.And when the brake pedal force that this opposition acts on brake pedal 200 reaches preset value, it opens Dynamic assist motor 201 makes its output torque be transmitted to the second elastic component 204 and the first elastic component 203 by screw mechanism 206 It and is that brake pedal 200 and thrust structure 202 provide power-assisted, and screw mechanism 206 is in further the second elastic component 204 of compression The first elastic component 203 can be compressed simultaneously in the process, so that brake pedal 200 and the displacement of 202 further occurrence of thrust structure become Change, and at this time since screw mechanism 206 bears a part provided by the first elastic component 203 and the second elastic component 204 reversely Active force, the opposition being subject to thus, it is possible to reduce thrust structure 202, so that brake pedal 200 obtains suitable braking Pedal force, so as to simulate the pedal force of brake pedal 200 and the target value of pedal travel.
In addition, being converted to the second state via the second transition state from the first working condition for brake pedal simulator The course of work is described as follows.In driver's brake pedal 200, thrust structure 202 drives 203 edge of the first elastic component It is compressed axially, the opposition that thrust structure 202 is provided by the first elastic component 203, this course of work is in the first work State.And when this opposition acts on the system of brake pedal 200 during ought further compressing the first elastic component 203 When dynamic pedal force reaches preset value, starting assist motor 201 enables its output torque to pass to the by screw mechanism 206 One elastic component 203 and be that thrust structure 202 provides power-assisted to further compressing the first elastic component 203, and the first elasticity at this time Part 203 does not cooperate with the second elastic component 204 also, and thrust structure 202 also suffers from the reversed work of the first elastic component 203 offer Firmly, this course of work is in the second transition state.In screw mechanism 206, further the first elastic component 203 of compression makes first The second elastic component 204 can be compressed simultaneously after elastic component 203 and the cooperation of the second elastic component 204, so that brake pedal 200 and thrust 202 further occurrence change in displacement of structure, and at this time since screw mechanism 206 is born by the first elastic component 203 and the second bullet Property part 204 provide a part of opposition, can reduce the opposition that thrust structure 202 is subject to so that braking step on Plate 200 obtains suitable brake pedal force, so as to simulate the pedal force of brake pedal 200 and the target of pedal travel Value.
In above-mentioned two situations, when the components such as assist motor 201, screw mechanism 206 and/or the second elastic component 204 are sent out When giving birth to failure and can not work normally, providing based-pedal power by the first elastic component 203 for brake pedal 200 also can be real The brake feel of existing brake pedal 200 keeps braking function so as to continue to implement braking.In addition, when driver discharges system When dynamic pedal 200,201 power loss of assist motor and make the first elastic component 203 and the second elastic component 204 by the elastic recovery of itself Power and realize self-return.
The characteristic of simulating brake pedal 200 is realized by brake control method as described above, and passes through power-assisted electricity The cooperation of machine 201 and screw mechanism 206 makes brake pedal simulator not only structure to replace existing hydraulic braking component It simply and not will receive the influence of hydraulic many factors in such as existing, operational stability is good, brake pedal is rung to have Should be rapid and other effects.In addition, though transmission matching mechanism uses screw mechanism 206 in the present embodiment, but the disclosure is simultaneously It is not limited to this, the transmission matching mechanism can use other reasonable arragement constructions.In addition, by by the first elastic component 203 and second elastic component 204 be arranged as that part is overlapped, so as to reduce the entirety of brake pedal simulator in the axial direction Size saves arrangement space so that the overall structure of brake pedal simulator minimizes.
It should be noted that using the first elastic component identical with present embodiment and the second resilient element connected in parallel cloth It sets in following 4th embodiments of mode, the rigidity of brake pedal simulator brake pedal under corresponding working state can occur Change.That is, the rigidity of brake pedal is determined by the rigidity of the first elastic component under such as the first working condition, and second Under working condition, the rigidity of brake pedal is determined by the rigidity of the first elastic component and the second elastic component, as a result, in the first work The rigidity of the brake pedal of state is different from the rigidity of the brake pedal of the second working condition, herein it is to be understood that the first work The brake pedal rigidity for making state is the rigidity of the first elastic component, and the brake pedal rigidity of the second working condition is the first elasticity The sum of part and the rigidity of the second elastic component.In addition, the particular technique for above-mentioned First Transition state and the second transition state is special Content is levied suitable for following 4th embodiments.
Optionally, the screw mechanism 206 is cooperated by first elastic component 203 with second elastic component 204, with By compressing second elastic component 204 during first elastic component 203 is compressed.Here, screw mechanism 206 may be arranged to cooperate by way of connecting with the first elastic component 203 with the second elastic component 204, thus in assist motor When 201 starting, output torque is transferred to screw mechanism 206, and screw mechanism 206 and thrust structure 202 drive first jointly Elastic component 203 compresses, and passes through the first elastic component 203 and the second elastic component 204 during the first elastic component 203 is compressed Cooperate and the second elastic component 204 is compressed together with the first elastic component 203.But it's not limited to that for the disclosure, screw machine Structure 206 can also be arranged as directly driving the compression of the second elastic component 204, and the second elastic component 204 can by with the first elasticity Part 203 cooperate mode and be further driven to the first elastic component 203 compression.
Optionally, first elastic component 203 and second elastic component 204 are helical spring.Thus, it is possible to by pushing away The driving force that power structure 202 and/or assist motor 201 act on makes quick and sensitive reaction and stretches.But this is not limited The scope of the present disclosure can guarantee matching for brake pedal 200, thrust structure 202, assist motor 201 and screw mechanism 206 It closes come in the case where driving the first elastic component 203 and/or the second elastic component 204 flexible, first elastic component 203 and the second bullet Property part 204 can use various reasonable structure.
Optionally, size of the size of first elastic component 203 less than the second elastic component 204, first elastic component 203 a part is located at the inside of second elastic component 204 and one end is along described axially projecting in second elastic component 204.Wherein, described one end for protruding from the second elastic component 204 of the first elastic component 203 passes through thrust structure 202 and/or power-assisted The driving of motor 201 and axially move closer to the direction of second elastic component 204 compress, in the process when the first elastic component 203 described one end can be further driven to the second elastic component 204 when cooperating with the second elastic component 204 axially compressed.But this Open it's not limited to that, can arrange the position of the first elastic component 203 and the second elastic component 204, example according to actual needs If the size of first elastic component 203 can be greater than the size of the second elastic component 204, at this point, the second elastic component 204 can be with cloth It sets in the inside of a part of the first elastic component 203.
Optionally, as shown in Fig. 6 and Figure 11, described one end of first elastic component 203 by the first spring base 210 with The thrust structure 202 cooperates, and the screw mechanism 206 and the thrust structure 202 can by first spring base 210 Cooperate with second elastic component 204, second bullet can be made during first elastic component 203 is compressed Property part 204 compress.Here, optionally, one end that second elastic component 204 corresponds to first spring base 210 is provided with Spring base 219 is abutted, and is provided with second spring seat 211 on the other end, the other end of first elastic component 203 is supported on institute It states on second spring seat 211, described one end of first spring base 210 can be relative to the second spring seat 211 along institute Axial movement is stated can abut with the spring base 219 that abut, under first working condition first flange 215 and The abutting spring base 219 separates, and first flange 215 abuts spring base 219 with described under second working condition It abuts.Wherein, abutting the spacing in the axial direction of spring base 219 and the first spring base 210 in the initial state is the first elastic component 203 independent compressed strokes, when the first spring base 210 is with abutting spring base 219 and contacting, the second elastic component 204 and first Elastic component 203 is synchronously axially compressed.As described above, passing through the first spring base 210 and the cooperation that abuts spring base 219 It is axially compressed that the second elastic component 204 can be stably driven with.Here, the abutting spring base 219 can be with the second elastic component 204 are integrally formed or can also be connected as one by fastener.But it's not limited to that for the disclosure, second elastic component 204 one end for corresponding to the first spring base 210 can be realized by directly abutting the arrangement of the first spring base 210.
Optionally, first spring base 210 includes the first flange 215 and prolongs from first flange 215 along the axial direction The first extension rod 217 stretched, the power-assisted screw rod 2061 of the screw mechanism 206 are connected to first flange 215, and described second Spring base 211 include the second flange 216 and from second flange 216 along the second axially extending extension rod 218, described the One extension rod 217 axially through the abutting spring base 219 and is movably set in second extension rod 218 along described Interior, first elastic component 203 is connected to first flange 215 and second extension rod 218.Wherein, the first elastic component 203 development length is less than the development length of the second elastic component 204, and in the case, the other end of the first elastic component 203 is along axis To on the second extension rod 218 for being connected to second spring seat 211, driven as a result, by thrust structure 202 and/or assist motor 201 During dynamic first spring base 210 compresses the first elastic component 203, after the first spring base 210 is with the contact of spring base 219 is abutted The second elastic component 204 can be driven synchronously to be compressed during the first 203 further compression of elastic component.But the disclosure is simultaneously It is not limited to this, it can be according to the specific arragement construction of the first elastic component 203 and the second elastic component 204 come reasonable design first The structure of spring base 210 and second spring seat 211.
Optionally, one end that first spring base 210 corresponds to the thrust structure 202 is provided with prominent along the axial direction Out and multiple connecting rods 212 of circumferentially spaced arrangement, multiple connecting rods 212 cooperate with the thrust structure 202, the spiral Position of the mechanism 206 between first spring base 210 and the thrust structure 202.Wherein, multiple connecting rods 212 can be with It is connected to the first spring base 210 using fasteners such as bolts, or can be formed as one with the first spring base 210, first The connecting rod 212 of spring base 210 and thrust structure 202 can be integrated using the modes such as being threadedly coupled and assembling, using screw thread company In the case where connecing mode, the pedal of brake pedal 200 can be adjusted by adjusting the position of the threaded connection part of connecting rod 112 Preset force and slack of pedal.As a result, assist motor 201, screw mechanism 206 and the first elastic component 203 and second Arragement construction between elastic component 204 is compact and is easy to implement modularized design.
Optionally, as shown in Figure 7 and Figure 8, the thrust structure 202 includes being articulated with the first of the brake pedal 200 Distance rod 2021 and first distance rod 2021 is articulated with by hinged seat 2024 and 210 edge of the first spring base can be driven Second distance rod 2022 of the axial movement, the hinged seat 2024 is formed as U-shaped seat, on the both side plate of the hinged seat 2024 It is respectively formed with hinge hole 2025, second distance rod 2022 penetrates through the bottom plate 2026 of the hinged seat 2024 and passes through setting It is threaded on the bottom plate 2026 in the nut 2027 on the bottom plate 2026 with can be along axially adjustable position.Wherein, with Similarly, the second distance rod 2022 passes through the hinge hole 2025 and the first distance rod 2021 on hinged seat 2024 to first embodiment Hingedly, in addition, brake pedal can be adjusted by being threadedly engaged by nut 2027 on bottom plate 2026 and the second distance rod 2022 200 pedal preset force, slack of pedal and pedal priming stroke.But it's not limited to that for the disclosure, can also lead to herein Other forms are crossed to adjust the pedal preset force of brake pedal 200, slack of pedal and pedal priming stroke.For example, can be with First distance rod 2021 or the second distance rod 2022 are arranged to stretching structure that is axially retractable and positioning (such as can be with For the structure of the loop bar being mutually threadedly engaged and the casing being set on loop bar outer peripheral surface) it is stepped in a manner of by stretching to adjust Plate preset force and slack of pedal.For another example, ground is referred to as described above, is used by the connecting rod of thrust structure 202 and spring base 210 Form is threadedly engaged to realize adjustment pedal preset force, slack of pedal and pedal priming stroke.
Optionally, second distance rod 2022 is formed as ball stud, and the thrust structure 202 further includes and described The butt joint 2028 of 2023 ball pair of the bulb connection of two distance rods 2022, and connect with first spring base 210 and with institute The push-plate 2029 of the cooperation of butt joint 2028 is stated, the screw mechanism 206 is arranged in the push-plate 2029 and first elastic component On position between 203.Optionally, it is formed on the push-plate 2029 for supplying the perforative through-hole of the butt joint 2028, institute It states to be formed in butt joint 2028 and is connected to the push-plate 2029 close to the U-shaped pressing plate 20281 of the side of the butt joint 2028. Structurally and functionally effect and structurally and functionally effect corresponding in above-mentioned first embodiment are essentially identical as described above, herein In order to avoid repeating to omit detailed description thereof.
Optionally, the output shaft 2011 of the assist motor 201 is connect by transmission mechanism with the screw mechanism 206. Here, transmission mechanism can use the structure of various reasonable, with can be by the output torque of assist motor 201 with transmission appropriate Than passing to screw mechanism 206, so that screw mechanism 206 reliably drives the first elastic component 203 and the second elasticity Part 204 compresses, and then the quickly and accurately pedal force and pedal travel of simulating brake pedal 200.
Optionally, as shown in Fig. 6, Fig. 8 and Fig. 9, the transmission mechanism includes the output shaft with the assist motor 201 The deceleration mechanism of 2011 connections, the transmission gear 213 connecting with the output end of the deceleration mechanism, the screw mechanism 206 include With the power-assisted screw rod 2061 of first elastic component 203 cooperation and be mounted on the outer peripheral surface of the power-assisted screw rod 2061 and be formed with The power-assisted gear 2062 for the internal screw thread being threadedly engaged with the power-assisted screw rod 2061, the transmission gear 213 by idle pulley 214 with The power-assisted gear 2062 engages.Here, be different from the first embodiment, the power-assisted screw rod 2061 of screw mechanism 206 with The cooperation of first elastic component 203, and then the second elastic component is compressed during driving the first elastic component 203 is axially compressed 204.In addition to this, the technical characteristic for above-mentioned transmission mechanism and screw mechanism 206 and technical effect and first embodiment In corresponding transmission mechanism it is identical with technical effect with the technical characteristic of screw mechanism 106,106, omit its description herein.
Optionally, the deceleration mechanism is planet gear reducing mechanism 207, in the planet gear reducing mechanism 207, sun gear 2071 connect with the output shaft 2011 of the assist motor 201, planet carrier 2072 as the deceleration mechanism output end and with The wheel axis connection of the transmission gear 213, gear ring 2073 are fixed in the shell 220 of the brake pedal simulator.Here, row The planetary gear 2074 engaged with sun gear 2071 and gear ring 2073 is provided in star wheel reducer structure 207, in planetary gear 2074 The heart is provided with planet carrier 2072.The output torque of assist motor 201 passes through the 207 deceleration increment of planet gear reducing mechanism as a result, Power-assisted screw rod 2061 is passed to by by transmission gear 213, idle pulley 214, power-assisted gear 2062.That is, the output of assist motor 201 Torque is after sun gear 2071, planetary gear 2074 and planet carrier 2072, via transmission gear 213, idle pulley 214 and power-assisted gear 2062 pass to power-assisted screw rod 2061 so that power-assisted screw rod 2061 be axially moveable during driving the first elastic component 203 and/or The compression of second elastic component 204.By using planet gear reducing mechanism 207, since planet gear reducing mechanism 207 itself has weight Light and small in size feature, so that brake pedal simulator has total quality light and characteristics of compact layout.In addition, passing through setting Planet gear reducing mechanism 207 can effectively improve the transmission efficiency of assist motor 201.
Optionally, the brake pedal simulator further includes the control for controlling the working condition of the assist motor 201 The sensor 209 of device 208 processed and the revolving speed for detecting the assist motor 201.Here, specifically, being stepped in driver When brake pedal 200, thrust structure 202 drives the first elastic component 203 axially compressed, and thrust structure 202 in the process It can also successively drive the second elastic component 204 along axial pressure by the cooperation of the first spring base 210 and the second elastic component 204 Contracting, thrust structure 202 is successively by the opposition of the first elastic component 203 offer and the first elastic component 203 and the second elasticity The opposition that part 204 provides, and controller 208 can act on system according to this opposition in this course of work The brake pedal force of dynamic pedal 200 reaches preset value to control starting assist motor 201, when controller 208 starts assist motor 201 make its output torque pass sequentially through planet gear reducing mechanism 207, screw mechanism 206 is transmitted to the first elastic component 203 or Person is transmitted on the first elastic component 203 and the second elastic component 204, to provide and help for brake pedal 200 and thrust structure 202 Power, so that 202 further occurrence change in displacement of brake pedal 200 and thrust structure, and at this time since screw mechanism 206 is born A part of opposition provided by the first elastic component 203 and the second elastic component 204, thus, it is possible to reduce thrust structure 202 The opposition being subject to, so that brake pedal 200 obtains suitable brake pedal force, so as to simulate brake pedal 200 pedal force and the target value of pedal travel.Wherein, revolving speed and energy of the sensor 209 for real-time detection assist motor 201 Enough feedbacks in real time can monitor the pedal travel of brake pedal 200 to controller 208 in real time, and thus, it is possible to improve system The functional reliability of dynamic pedal simulator.In addition, being the system by brake pedal 200 for the starting opportunity of assist motor 201 The influence of dynamic pedal force, the first elastic component 203 and the second elastic component 204, for example, when the rigidity of the first elastic component 203 is smaller, May be in the first elastic component 203 and the cooperation of the second elastic component 204 and under compressed state (i.e. First Transition state), power-assisted electricity Machine 201 can be activated；Or first elastic component 203 rigidity it is larger when, may the first elastic component 203 not with the second elastic component Under the state (i.e. the second transition state) of 204 cooperations, assist motor 201 can be activated.But the disclosure is not particularly limited to this, The mode that controller 208 controls assist motor 201 can be carried out specifically to design according to the actual situation.
Optionally, as shown in Figure 10 and Figure 11, the brake pedal simulator includes shell 220, which includes institute It states department of assembly 205, the first shell portion 2201 for accommodating the screw mechanism 206, transmission gear 213 and idle pulley 214, use In the second shell portion 2202 for accommodating the assist motor 201 and for accommodating first elastic component 203 and described second The third housing section 2203 of elastic component 204, the end abutment of second elastic component 204 is in the inner end of third housing section 2203 Wall.Wherein, the dust cover 2204 in the portion perimeter face for covering the second distance rod 2022 can be set in department of assembly 205 To play sealing and dust-proof effect.The shell 220 and the structure of the shell 120 in first embodiment of structure as described above are big Cause it is identical, in order to avoid repeating to omit detailed description thereof herein.By structure as described above brake pedal is simulated Device has the effect of characteristics of compact layout and realizes modularized design.But it's not limited to that for the disclosure, can be according to pedal simulator Practical specific structure carry out the structure of reasonable design shell 220.
As described above, being described in detail referring to second embodiment of the Fig. 6 to Figure 11 to the disclosure, referring to figure 16 to Figure 19 are described in detail the brake pedal simulator of the 4th embodiment of the disclosure.
A kind of brake pedal simulator is provided according to the 4th embodiment of the disclosure, which includes system Dynamic pedal 400, the department of assembly 405 for being assembled on vehicle body, is axially disposed in the department of assembly 405 at assist motor 401 Side and along the first overlapped elastic component 403 of the axial component and the second elastic component 404, be articulated with the brake pedal 400 and with first elastic component 403 cooperate can successively drive first elastic component 403 and second elastic component 404 along the axial stretching thrust structure 402, first elastic component 403 is that provide pedal preset for the brake pedal 400 The output shaft 4011 of power, the assist motor 401 is cooperated by gear and rack teeth mechanism 406 and first elastic component 403, with energy Power-assisted enough is provided for the thrust structure 402, wherein the brake pedal simulator has the first working condition and the second work State compresses first elastic component 403 by the thrust mechanism 402, in institute under first working condition It states under the second working condition, by the cooperation of the thrust structure 402 and the assist motor 401 so that first elastic component 403 synchronous with second elastic component 404 are compressed.
Here, the pedal force and pedal travel of the first elastic component 403 and the second elastic component 404 as brake pedal 400 Analog element, in the initial state (in the case where i.e. non-brake pedal 400), the first elastic component 403 is in compressive state To provide pedal preset force for brake pedal 400, and the second elastic component 404 be in 403 discrete state of the first elastic component and with Power transmitting does not occur between first elastic component 403 and thrust structure 402.In addition, in the first operative state, the first bullet Property part 403 compressed by thrust mechanism 402, and the second elastic component 404 is in the state isolated with the first elastic component 403 and with Power transmitting does not occur between first elastic component 403 and thrust structure 402.And in a second operative state, described first Elastic component 403 and the cooperation of the second elastic component 404 and the state for being in compression.
It should be noted that the First Transition state and second transition state as referred among the above are suitable For herein in order to avoid repeating, omitting its description in present embodiment.
Here, being converted to the second working condition via First Transition state from the first working condition to brake pedal simulator The course of work be illustrated.Specifically, as described above, in driver's brake pedal 400, thrust structure 402 is driven First elastic component 403 is axially compressed, and the opposition that thrust structure 402 is provided by the first elastic component 403, this is worked Journey is in the first working condition.And work as the first elastic component 403 and cooperate during compression with the second elastic component 404, and make The first elastic component 403 of driving and the compression of the second elastic component 404 jointly of thrust structure 402, at this point, thrust structure 402 is by first Elastic component 403 and the common opposition for cooperating and providing of the second elastic component 404, this process are in First Transition state.And When the brake pedal force that this opposition acts on brake pedal 400 reaches preset value, starting assist motor 401 makes It is brake pedal that its output torque, which is transmitted to the second elastic component 404 and the first elastic component 403 by gear and rack teeth mechanism 406, 400 and thrust structure 402 power-assisted is provided, and gear and rack teeth mechanism 406 due to synchronous drives the first elastic component 403 and second at this time Elastic component 404 compresses, so that 402 further occurrence change in displacement of brake pedal 400 and thrust structure, and at this time due to gear Rackwork 406 bears a part of opposition provided by the first elastic component 403 and the second elastic component 404, thus, it is possible to The opposition that thrust structure 402 is subject to is reduced, so that brake pedal 400 obtains suitable brake pedal force, so as to Simulate the pedal force of brake pedal 400 and the target value of pedal travel.
In addition, being converted to the second state via the second transition state from the first working condition for brake pedal simulator The course of work is described as follows.In driver's brake pedal 400, thrust structure 402 drives 403 edge of the first elastic component It is compressed axially, the opposition that thrust structure 402 is provided by the first elastic component 403, this course of work is in the first work State.And when this opposition acts on the system of brake pedal 400 during ought further compressing the first elastic component 403 When dynamic pedal force reaches preset value, starting assist motor 401 enables its output torque to transmit by gear and rack teeth mechanism 406 To the first elastic component 403 it is that thrust structure 402 provides power-assisted to further compressing the first elastic component 403, and at this time first Elastic component 403 does not cooperate with the second elastic component 404 also, and thrust structure 402 also suffers from the anti-of the first elastic component 403 offer To active force, this course of work is in the second transition state.The first elastic component 403 is further compressed in gear and rack teeth mechanism 406 So that can be realized the first elastic component of synchronous compression 403 and the second elasticity after the first elastic component 403 and the cooperation of the second elastic component 404 Part 404, so that 402 further occurrence change in displacement of brake pedal 400 and thrust structure, and at this time due to gear and rack teeth mechanism 406 bear a part of opposition provided by the first elastic component 403 and the second elastic component 404, can reduce thrust structure 402 oppositions being subject to are stepped on so that brake pedal 400 obtains suitable brake pedal force so as to simulate braking The pedal force of plate 400 and the target value of pedal travel.
In above-mentioned two situations, when the components such as assist motor 401, gear and rack teeth mechanism 406 or the second elastic component 404 are sent out When giving birth to failure and can not work normally, providing based-pedal power by the first elastic component 403 for brake pedal 400 also can be real The brake feel of existing brake pedal 400 keeps braking function so as to continue to implement braking.In addition, when driver discharges system When dynamic pedal 400,401 power loss of assist motor and make the first elastic component 403 and the second elastic component 404 by the elastic recovery of itself Power and realize self-return.
The characteristic of simulating brake pedal 400 is realized by brake control method as described above, and passes through power-assisted electricity The cooperation of machine 401 and gear and rack teeth mechanism 406 makes brake pedal simulator not only to replace existing hydraulic braking component Structure is simple and not will receive the influence of hydraulic many factors in such as existing, to have, operational stability is good, brakes and steps on Plate responds rapid and other effects.In addition, the structure overlapped by the part of the first elastic component 403 and the second elastic component 404 The overall dimensions of brake pedal device can be reduced.In addition, although transmission matching mechanism uses gear teeth in the present embodiment Mechanism 406, but it's not limited to that for the disclosure, and the transmission matching mechanism can use other reasonable arragement constructions.
Optionally, the gear and rack teeth mechanism 406 is matched by first elastic component 403 with second elastic component 404 It closes, by compressing second elastic component 404 during first elastic component 403 is compressed.Wherein, described Gear & rack structure 406 can using in such a way that the first elastic component 403 drives 404 compression of the second elastic component indirectly, or Person can also be not particularly limited using by way of directly driving 404 compression of the second elastic component in this disclosure.In gear In the case that rackwork 406 is cooperated by the first elastic component 403 and the second elastic component 404, such as rack-and-pinion can be passed through Mechanism 406 drives the mode for being used to support the components such as the mounting base of the first elastic component 403, so that the first elastic component 403 is compressed During the components such as the second elastic component 404 and the mounting base cooperation and also compressed.Optionally, first elastic component 403 and second elastic component 404 be helical spring.Thus, it is possible to act on by thrust structure 402 and/or assist motor 401 Driving force make it is quick and it is sensitive reaction and stretch.But this does not limit the scope of the present disclosure, steps on that can guarantee to brake Plate 400, thrust structure 402, assist motor 401 and gear and rack teeth mechanism 406 cooperation come drive the first elastic component 403 and/ Or second elastic component 404 it is flexible in the case where, first elastic component 203 and the second elastic component 404 can use various reasonable Structure.
Optionally, size of the size of first elastic component 403 less than the second elastic component 404, first elastic component 403 a part is located at the inside of second elastic component 404 and one end is along described axially projecting in second elastic component 404.Wherein, described one end for protruding from the second elastic component 404 of the first elastic component 403 passes through thrust structure 402 and/or power-assisted The driving of motor 401 and axially move closer to the direction of second elastic component 404 compress, in the process when the first elastic component 403 described one end can be further driven to the second elastic component 404 when cooperating with the second elastic component 404 axially compressed.But this Open it's not limited to that, can arrange the position of the first elastic component 403 and the second elastic component 404, example according to actual needs If the size of first elastic component 403 can be greater than the size of the second elastic component 404, at this point, the second elastic component 404 can be with cloth It sets in the inside of a part of the first elastic component 403.
Optionally, described one end of first elastic component 403 passes through the first spring base 410 and the thrust structure 402 Cooperation, the gear and rack teeth mechanism 406 and the thrust structure 402 can be with described second by first spring base 410 Elastic component 404 cooperates, can press second elastic component 404 during first elastic component 403 is compressed Contracting.Here, optionally, one end that second elastic component 404 corresponds to first spring base 410 is provided with abutting spring base 419, and second spring seat 411 is provided on the other end, the other end of first elastic component 403 is supported on the second spring On seat 411, described one end of first spring base 410 can be relative to the second spring seat 411 along the axial movement Can abut with the spring base 419 that abuts, first flange 415 abuts bullet with described under first working condition Spring abutment 419 separates, and first flange 415 is abutted with the spring base 419 that abuts under second working condition.Above-mentioned The arragement construction of one elastic component 403 and the second elastic component 404 and above-mentioned second embodiment use identical structure.Wherein, Abutting the spacing in the axial direction of spring base 419 and the first spring base 410 in the initial state is that the first elastic component 403 is individually pressed The stroke of contracting, when the first spring base 410 is with abutting spring base 419 and contacting, the second elastic component 404 is synchronous with the first elasticity 403 Ground is axially compressed.As described above, can steadily be driven by the first spring base 410 with the cooperation for abutting spring base 419 Dynamic second elastic component 404 is axially compressed.Here, the abutting spring base 419 can it is integrally formed with the second elastic component 404 or Person can also be connected as one by fastener.But it's not limited to that for the disclosure, and second elastic component 404 corresponds to first One end of spring base 410 can be realized by directly abutting the arrangement of the first spring base 410.
Optionally, first spring base 410 includes the first flange 412 and prolongs from first flange 412 along the axial direction The first extension rod 413 stretched, the first end of the rack gear 4062 are connected to first flange 412, the second spring seat 411 Including the second flange 414 and from second flange 414 along the second axially extending extension rod 415, first extension rod 413 axially through the abutting spring base 418 and are movably set in second extension rod 415, described along described One elastic component 403 is connected to first flange 412 and second extension rod 415.Above structure and function and effect and second The first spring base 210 is identical with the corresponding structure of second spring seat 211 and function and effect in embodiment, in order to avoid weight It is multiple, omit detailed description thereof.
Optionally, the thrust structure 402 includes being articulated with the first distance rod 4021 of the brake pedal 400 and hinged In first distance rod 4021 and second distance rod 4022 of first spring base 410 along the axial movement can be driven, The second end of second distance rod 4022 and the rack gear 4062 cooperates.Here, the second distance rod 4022 can be connected to rack gear 4062 second end, or also can connect in the second end of rack gear 4062, wherein when the second distance rod 4022 is connected to rack gear In the case where 4062 second end, the second distance rod 4022 can pass through 403 He of the first elastic component in the case where stopping braking The elastic-restoring force of second elastic component 404 and be returned to initial position.Optionally, the first end of the rack gear 4062 is formed There are the first mating flanges 416 abutted with first spring base 410, the second end is formed with and second distance rod Second mating flanges 417 of 4022 cooperations.It can be stablized by the gear and rack teeth mechanism 406 of structure as described above as a result, and can Realize that the power between thrust structure 402 and the first spring base 410, the first elastic component 403 and the second elastic component 404 passes by ground It passs.But it's not limited to that for the disclosure, and the rack gear 4062 of the gear and rack teeth mechanism 406 can also pass through other reasonable structures Cooperate with the first spring base 410 and the second distance rod 4022, such as the both ends of the rack gear 4062 are directly connected in the second thrust Bar 4022 and the first spring base 410 and do not form the first mating flanges 416 and the second mating flanges 417, this equally also can Realize the power transmitting between thrust structure 402, the first spring base 410, the first elastic component 403 and the second elastic component 404.
Optionally, second distance rod 4022 is formed as ball stud, the bulb 4023 of second distance rod 4022 with Second mating flanges, the 417 cambered surface cooperation.As a result, when driver's brake pedal 400 brings it about change in displacement, the One distance rod 4021 and the second distance rod 4022 are also subjected to displacement variation therewith, and pass through the bulb 4023 of the second distance rod 4022 Cooperate with the cambered surface of the first spring base 410, enables to the second distance rod 4022 to adapt to angle change, prevent movement interference Phenomenon.
Optionally, the radius of curvature of the bulb 4023 is less than the song of the arc mating surface of second mating flanges 417 Rate radius.The bulb 4023 of the second distance rod 4022 and the arc of the second mating flanges 417 is allowed to match in the appropriate range as a result, Conjunction face occurs relative motion and makes brake pedal 400, thrust structure 402, the first elastic component 403 and the second elastic component 404 Between transmission process it is more smooth.But it's not limited to that for the disclosure, thrust structure 402 and the secondth mating flanges 417 it Between fit form can use other reasonable structures, such as the second distance rod 4022 can use with the first spring base 410 Ball pair fit form, universal joint type of attachment are directly connected to the second mating flanges 417 using the second distance rod 4022 The form of straight end face.
Optionally, as shown in figure 17, the hinged end of second distance rod 4022 is provided with is threadedly coupled with the hinged end U-shaped hinged seat 4024, be respectively formed with hinge hole 4025, second distance rod on the both side plate of the hinged seat 4024 The bottom plate 4026 and the nut 4027 by being arranged on the bottom plate 4026 of the 4022 perforation hinged seats 4024 are threadedly coupled With can be along axially adjustable position on the bottom plate 4026.Structure knot corresponding with above-mentioned third embodiment as described above Structure is identical and technical effect having the same herein in order to avoid repeating omits its description.In addition, above-mentioned third is implemented Mode of texturing disclosed in mode may also apply in present embodiment.Optionally, in addition, second distance rod 4022 is close The part of the bulb 4023, which is arranged with, engages seat 4028, circumferentially spaced on the outer peripheral surface of the locking seat 4028 to be disposed with axial direction The multiple locking protrusions 4029 extended, first spring base 410 one end corresponding with the locking seat 4028 is formed with and institute State the locking groove 4101 of the cooperation of locking protrusion 4029.Here, locking seat 4028 can be with the outer peripheral surface of the second distance rod 4022 Clearance fit, so as to avoid locking seat 4028 from interfering the second distance rod 4022 with brake pedal 400 and the first distance rod Movement caused by 4021 change in location.As described above, passing through the locking protrusion and the first spring base 410 for engaging seat 4028 It engages the engaging of groove 4101 and can reliably connect the second distance rod 4022 and the first elastic component 403.But the disclosure is not It is defined in this, the fit form between the thrust structure 402 and the first elastic component 403 can use other reasonable structures.
Optionally, the gear and rack teeth mechanism 406 includes gear shaft 4061 and rack gear 4062, the gear shaft 4061 and institute It states the connection of output shaft 4011 of assist motor 401 and is provided with the power-assisted gear 4063 engaged with the rack gear 4062, the tooth The first end of item 4062 and first elastic component 403 cooperate, and the second end of the rack gear 4062 is matched with the thrust structure 402 It closes.Here, can be using as described above for the connection type of rack gear 4062 and thrust structure 402 and the first spring base 410 In such a way that the structure of the first mating flanges 416 and the second mating flanges 417 realizes cooperation.The disclosure is not made especially to limit It is fixed, if enable to rack gear 4062 to receive the power output from assist motor 401 and engaging with power-assisted gear 4063, or Person receives the pedal force from brake pedal by thrust structure 402, so that rack gear 4062 is able to drive the first elastic component 403 and/or second elastic component 404 it is axially compressed.
Optionally, the output shaft 4011 of the assist motor 401 is connect by deceleration mechanism with the gear shaft 4061.? This, the deceleration mechanism can use a variety of structures appropriate, such as can be slowed down using gear pair deceleration mechanism, worm and gear Mechanism, planet gear reducing mechanism etc..Optionally, the deceleration mechanism is planet gear reducing mechanism 407, the planet gear reducing mechanism In 407, sun gear 4071 is connect with the output shaft 4011 of the assist motor 401, planet carrier 4072 and the gear shaft 4061 Connection, gear ring 4073 are fixed in the shell 420 of the brake pedal simulator.Wherein, it is arranged in planet gear reducing mechanism 407 There is the planetary gear 4074 engaged with sun gear 4071 and gear ring 4073, planetary gear 4074 is provided centrally with planet carrier 4072.By This, the output torque of assist motor 401 is transmitted after the 407 deceleration increment of planet gear reducing mechanism by power-assisted gear 4063 To rack gear 4062.That is, the output torque of assist motor 401 is after sun gear 4071, planetary gear 4074 and planet carrier 4072, via Power-assisted gear 4063 on the gear shaft 4061 being connect by forms such as key, spline connections with planet carrier 4072 passes to tooth Item 4062, so that rack gear 3062 drives the first elastic component 403 and/or the second elastic component 404 flexible during being axially moveable.It is logical Cross using planet gear reducing mechanism 407, due to planet gear reducing mechanism 407 itself have the characteristics that it is light-weight and small in size, from And brake pedal simulator is made to have total quality light and characteristics of compact layout.In addition, passing through setting 407 energy of planet gear reducing mechanism Enough effectively improve the transmission efficiency of assist motor 401.
Optionally, the assist motor 401, the deceleration mechanism and the gear and rack teeth mechanism 406 are located at the dress Correspond to the side of first elastic component 403 with portion 405.Thus spiral shell is utilized by department of assembly 405 in brake pedal simulator The fasteners such as bolt 4051 are assembled in the state of vehicle body, and assist motor 401, deceleration mechanism and gear and rack teeth mechanism 406 are being sent out It is reasonably arranged in the confined space in motivation cabin, to achieve the effect that compact-sized and shared installation space small volume.But this Open it's not limited to that, and the position relationship between above-mentioned component can neatly occur in the case where not conflicting Variation, and these variations are all fallen in the interest field of the disclosure.
Optionally, the department of assembly 405 is provided with close to the side of the rack gear 4062 of the gear and rack teeth mechanism 406 and is used for Detect the displacement sensor 418 of the displacement of the rack gear 4062.Wherein, which can be fixed on department of assembly 405 On, and the side installation outstanding towards the first elastic component 403 and the second elastic component 404 is provided on the displacement sensor 418 Boss is formed with mounting hole 4181 on the installation base, and the gear shaft 4061 of gear and rack teeth mechanism 406 is supported on the mounting hole On 4181, thus, it is possible to realize reliable location.The function and function and effect of displacement sensor 418 as described above and above-mentioned third Displacement sensor 318 in embodiment is identical, and the specific arrangement method referred in third embodiment can also be applied In present embodiment, it is illustrated in order to avoid repeating to omit herein.
Optionally, the brake pedal simulator further includes the control for controlling the working condition of the assist motor 401 The sensor 409 of device 408 processed and the revolving speed for detecting the assist motor 401.Wherein, sensor 409 can connect in On the output shaft of assist motor 401, such as assist motor can be connected to by the gear shaft 4061 of gear and rack teeth mechanism 406 401 output shaft.Specifically, the sensor 409 can be set in gear shaft 4061 back in the output shaft 4011 End and the sensor 409 can integrate on the controller 408 and be electrically connected to controller 408.Wherein, the power-assisted Motor 401, planet gear reducing mechanism 407 can be located at the side of the gear and rack teeth mechanism 406, the sensor 409 and control Device 408 processed is located at the other side of gear and rack teeth mechanism 306, so that the structure arrangement of brake pedal simulator is more reasonable.It is driving When the person's of sailing brake pedal 400, thrust structure 402 drives the first elastic component 403 axially compressed, and thrust in the process Structure 402 can also successively drive 404 edge of the second elastic component by the cooperation of the first spring base 410 and the second elastic component 404 It is compressed axially, the opposition and the first elastic component 403 and that thrust structure 402 is successively provided by the first elastic component 403 The opposition that two elastic components 404 provide, and controller 408 can be according to this acting in opposition masterpiece in this course of work Brake pedal force for brake pedal 400 reaches preset value to control starting assist motor 401, when the starting of controller 408 helps Force motor 401 makes that its output torque passes sequentially through planet gear reducing mechanism 407, gear and rack teeth mechanism 406 is transmitted to the first bullet Property part 403 or be transmitted on the first elastic component 403 and the second elastic component 404, to be brake pedal 400 and thrust structure 402 provide power-assisted, so that 402 further occurrence change in displacement of brake pedal 400 and thrust structure, and at this time due to gear teeth A part of opposition provided by the first elastic component 403 and the second elastic component 404 is born by mechanism 406, and thus, it is possible to drop The opposition that low-thrust structure 402 is subject to, so that brake pedal 400 obtains suitable brake pedal force, so as to mould Draw up the pedal force of brake pedal 400 and the target value of pedal travel.Wherein, sensor 409 is used for real-time detection assist motor 401 revolving speed simultaneously can feed back controller 408 in real time can monitor the pedal travel of brake pedal 400 in real time, 418 phase of displacement sensor of sensor 409 and the above-mentioned change in displacement for real-time detection thrust structure 402 can be passed through herein Mutually cooperation, the pedal force of brake pedal 400 and the target value of pedal travel is gone out so as to more accurate simulation, thus into one Step improves the functional reliability of brake pedal simulator.In addition, here, displacement sensor 418 may be electrically connected to controller 408, or also may be electrically connected to the brak control unit in other control units such as brake system of car, to pass through position The function of the displacement of rack gear 4062 and the revolving speed of assist motor 401 is realized while being detected to displacement sensor 418 and sensor 409, by This minimizes the deviation of the pedal force of the brake pedal 400 simulated and the target value of pedal travel.Here, for power-assisted The starting opportunity of motor 401 is the brake pedal force, the first elastic component 403 and the second elastic component 404 by brake pedal 400 Influence may cooperate in the first elastic component 403 and the second elastic component 404 for example, when the rigidity of the first elastic component 403 is smaller And under compressed state (i.e. First Transition state), assist motor 401 can be activated；Or first elastic component 403 rigidity , may be in the first elastic component 403 not and under the state (i.e. the second transition state) of the second elastic component 404 cooperation when larger, power-assisted Motor 401 can be activated.But the disclosure is not particularly limited to this, can come specifically to design controller 408 according to the actual situation Control the mode of assist motor 401.
Optionally, as shown in Figure 18 and Figure 19, the brake pedal simulator includes shell 420, which includes institute State department of assembly 405, for accommodating first elastic component 403, the gear and rack teeth mechanism 406 and second elastic component 404 First shell portion 4201, the second shell portion 4202 for accommodating the assist motor 401 and for accommodating the power-assisted The second shell portion 4202 of motor 401, deceleration mechanism etc., and the third shell for accommodating controller 408 and sensor 409 Portion 4203, wherein the end abutment of the second elastic component 404 then exposes in the inner end wall in first shell portion 4201, thrust structure 402 In first shell portion 4201 and department of assembly 405.The wherein department of assembly 305, first shell portion 4201, second shell portion 4202 And third housing section 4203 is interconnected.First shell portion 4201, second shell portion 4202 and third housing section 4203 can be with It is integral by the assembly of the fasteners such as bolt, and second shell portion 4202 and third housing section 4203 can be located at first shell The opposite side in portion 4201.In addition, department of assembly 405 can be assemblied in first shell portion 4201, or can also be with first shell Portion 4201 is integrally formed.The department of assembly 405 can be assembled on vehicle body by the fasteners such as bolt 4051, at this time brake pedal 400 are exposed in driver's cabin, and thrust structure 402 selectively can partially be exposed to driver's cabin according to the actual situation, so as to In operation.In addition, the dust cover in the portion perimeter face for covering the second distance rod 4022 can be set in department of assembly 405 4204 to play sealing and dust-proof effect.By structure as described above make brake pedal simulator have characteristics of compact layout and Realize the effect of modularized design.But it's not limited to that for the disclosure, can according to the arragement construction of brake pedal simulator come The structure of reasonable design shell 420.
On the basis of the brake pedal simulator provided based on above-mentioned first to fourth embodiment, according to the another of the disclosure On the one hand, a kind of brake system of car is also provided, the brake system of car includes any one in first to fourth embodiment Kind brake pedal simulator.Optionally, the brake system of car includes brak control unit, and the brak control unit is according to institute The real-time pedal force or pedal travel of stating brake pedal control the working condition of the assist motor.Brak control unit according to In the case where working condition of the real-time pedal force of brake pedal to control assist motor, to the brake system of car of the disclosure Braking process is illustrated.When automobile is braked, driver operates brake pedal and braking instruction is input to the disclosure On brake pedal simulator as described above, wherein the thrust in driver's brake pedal, in brake pedal simulator Structure drives elastic component axially compressed (here, when two elastic components are used such as first embodiment and third embodiment institute When the serial arrangement stated, thrust structure drives the first elastic component and the second elastic component along axial synchronous compression, when two bullets Property part using parallel arrangement mode described in second embodiment and the 4th embodiment when, thrust structure drives the first elastic component It is axially compressed), the opposition that thrust structure is provided by elastic component, and stepped on when this opposition acts on braking When the brake pedal force of plate reaches preset value, brak control unit sends the finger of starting assist motor to controller as described above It enables.The torque that it is exported after assist motor starting is transmitted to elastic component by being driven matching mechanism, with can be brake pedal with Thrust structure provides power-assisted and elastic component is driven further to be compressed, so that brake pedal and the displacement of thrust structure further occurrence Variation, and since transmission matching mechanism bears a part of opposition applied by elastic component.Thus, it is possible to reduce thrust The opposition that structure is subject to, so that brake pedal obtains suitable brake pedal force, so as to simulate brake pedal Pedal force and pedal travel target value.Controller transmits the information such as pedal force signal and pedal travel signal as a result, Onto brak control unit, brak control unit judged according to the signal driver braking intention (for example, service brake or Parking braking, deceleration etc.), at the same time, brak control unit receives wheel rotation speed signals by corresponding sensor, braking is held The electric current of motor and rotor-position signal, vehicle velocity signal in row device.Brak control unit is according to above- mentioned information reality as a result, When calculate each wheel needed for optimal brake pedal force and issue corresponding control signal, with finally control brake actuator into Row braking.
According to the another aspect of the disclosure, a kind of vehicle is also provided, which includes brake system of car as described above. The vehicle can reliably simulate the braking of brake pedal and being provided with brake pedal simulator as described above as a result, Pedal force and braking distance, to provide good brake feel for driver.In addition, passing through control for brake side as described above Method replaces existing hydraulic braking portion by assist motor and transmission matching mechanism to realize simulating brake pedal characteristic Part and the influence that is not only simple in structure and not will receive the factors such as hydraulic, so that wheel has, operational stability is good, system Dynamic pedal responds rapid and other effects.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought equally should be considered as disclosure disclosure of that.

Claims (21)

1. a kind of brake pedal simulator, which is characterized in that the brake pedal simulator includes brake pedal (400), power-assisted electricity Machine (401), is axially disposed in the side of the department of assembly (405) and along institute at the department of assembly (405) for being assembled on vehicle body It states overlapped the first elastic component (403) of axial component and the second elastic component (404), be articulated with the brake pedal (400) And cooperate with first elastic component (403) can successively drive first elastic component (403) and second elastic component (404) along the thrust structure (402) of the axial stretching, first elastic component (403) is the brake pedal (400) offer The output shaft (4011) of pedal preset force, the assist motor (401) passes through gear and rack teeth mechanism (406) and first elasticity Part (403) cooperation, can be that the thrust structure (402) provides power-assisted, wherein the brake pedal simulator has first Working condition and the second working condition make described first by the thrust mechanism (402) under first working condition Elastic component (403) is compressed, and under second working condition, passes through the thrust structure (402) and the assist motor (401) cooperation is so that first elastic component (403) is synchronous with the second elastic component (404) is compressed.
2. brake pedal simulator according to claim 1, which is characterized in that the gear and rack teeth mechanism (406) passes through First elastic component (403) and second elastic component (404) cooperate, by being pressed in first elastic component (403) Compress second elastic component (404).
3. brake pedal simulator according to claim 1, which is characterized in that first elastic component (403) and described Second elastic component (404) is helical spring.
4. brake pedal simulator according to claim 3, which is characterized in that the size of first elastic component (403) Less than the size of the second elastic component (404), a part of first elastic component (403) is located at second elastic component (404) Inside and one end along described axially projecting in second elastic component (404).
5. the brake pedal simulator according to any one of claim 2-4, which is characterized in that first elastic component (403) described one end is cooperated by the first spring base (410) and the thrust structure (402), the gear and rack teeth mechanism (406) can be cooperated with second elastic component (404) with the thrust structure (402) by first spring base (410), Can compress second elastic component (404) during first elastic component (403) is compressed.
6. brake pedal simulator according to claim 5, which is characterized in that second elastic component (404) corresponds to One end of first spring base (410), which is provided with, abuts spring base (419), and second spring seat is provided on the other end (411), the other end of first elastic component (403) is supported on the second spring seat (411), first spring base (410) it can move axially relative to the second spring seat (411) along described can be supported with the spring base (419) that abuts It connects, first flange (415) separates with the abutting spring base (419) under first working condition, described second First flange (415) abuts with described abut spring base (419) under working condition.
7. brake pedal simulator according to claim 6, which is characterized in that first spring base (410) includes the One flange (412) and from first flange (412) along axially extending first extension rod (413), the rack gear (4062) First end be connected to first flange (412), the second spring seat (411) include the second flange (414) and from this Two flanges (414) along axially extending second extension rod (415), first extension rod (413) along it is described axially through It the abutting spring base (418) and is movably set in second extension rod (415), first elastic component (403) It is connected to first flange (412) and second extension rod (415).
8. brake pedal simulator according to claim 5, which is characterized in that the thrust structure (402) includes hinged In the brake pedal (400) the first distance rod (4021) and be articulated with first distance rod (4021) and can drive described Second distance rod (4022) of first spring base (410) along the axial movement, second distance rod (4022) and the rack gear (4062) second end cooperation.
9. brake pedal simulator according to claim 8, which is characterized in that the first end of the rack gear (4062) The first mating flanges (416) abutted with first spring base (410) are formed with, the second end is formed with and described second The second mating flanges (417) of distance rod (4022) cooperation.
10. brake pedal simulator according to claim 8, which is characterized in that second distance rod (4022) is formed For ball stud, the bulb (4023) of second distance rod (4022) and the second mating flanges (417) cambered surface cooperate.
11. brake pedal simulator according to claim 10, which is characterized in that the radius of curvature of the bulb (4023) Less than the radius of curvature of the arc mating surface of second mating flanges (417).
12. brake pedal simulator according to claim 8, which is characterized in that the hinge of second distance rod (4022) The hinged seat (4024) that end is provided with the U-shaped being threadedly coupled with the hinged end is connect, is distinguished on the both side plate of the hinged seat (4024) It is formed with hinge hole (4025), second distance rod (4022) penetrates through the bottom plate (4026) of the hinged seat (4024) and passes through It is arranged and is threaded on the bottom plate (4026) in the nut (4027) on the bottom plate (4026) with can be along axially adjustable position It sets.
13. brake pedal simulator according to claim 1, which is characterized in that the gear and rack teeth mechanism (406) includes Gear shaft (4061) and rack gear (4062), the gear shaft (4061) and the output shaft (4011) of the assist motor (401) connect Connect and be provided with the power-assisted gear (4063) engaged with the rack gear (4062), the first end of the rack gear (4062) and described the One elastic component (403) cooperation, the second end of the rack gear (4062) and the thrust structure (402) cooperate.
14. brake pedal simulator according to claim 13, which is characterized in that the output of the assist motor (401) Axis (4011) is connect by deceleration mechanism with the gear shaft (4061).
15. brake pedal simulator according to claim 14, which is characterized in that the deceleration mechanism is planetary gear deceleration Mechanism (407), in the planet gear reducing mechanism (407), the output shaft of sun gear (4071) and the assist motor (401) (4011) it connects, planet carrier (4072) is connect with the gear shaft (4061), and gear ring (4073) is fixed on the brake pedal mould In the shell (420) of quasi- device.
16. brake pedal simulator according to claim 15, which is characterized in that the assist motor (401) described subtracts Fast mechanism and the gear and rack teeth mechanism (406) are located at the department of assembly (405) corresponding to first elastic component (403) Side.
17. brake pedal simulator according to claim 1, which is characterized in that the department of assembly (405) is close to the tooth The side for taking turns the rack gear (4062) of rackwork (406) is provided with the displacement sensing of the displacement for detecting the rack gear (4062) Device (418).
18. brake pedal simulator according to claim 1, which is characterized in that the brake pedal simulator further includes For controlling the controller (408) of the working condition of the assist motor (401) and for detecting the assist motor (401) Revolving speed sensor (409).
19. a kind of brake system of car, which is characterized in that the brake system of car includes any in -18 according to claim 1 Brake pedal simulator described in.
20. brake system of car according to claim 19, which is characterized in that the brake system of car includes braking control Unit processed, the brak control unit control the power-assisted electricity according to the real-time brake pedal force or pedal travel of the brake pedal The working condition of machine.
21. a kind of vehicle, which is characterized in that the vehicle includes brake system of car described in 9 or 20 according to claim 1.
CN201710527363.4A 2017-06-30 2017-06-30 Brake pedal simulator, automobile brake system and vehicle Active CN109204272B (en)

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