CN108715162A - A kind of electric brake booster - Google Patents
A kind of electric brake booster Download PDFInfo
- Publication number
- CN108715162A CN108715162A CN201810672965.3A CN201810672965A CN108715162A CN 108715162 A CN108715162 A CN 108715162A CN 201810672965 A CN201810672965 A CN 201810672965A CN 108715162 A CN108715162 A CN 108715162A
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- Prior art keywords
- booster
- push rod
- support plate
- power
- right end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006073 displacement reaction Methods 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 5
- 238000001727 in vivo Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 13
- 230000009471 action Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 244000309464 bull Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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- 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
Abstract
The invention discloses a kind of electric brake boosters,Including pedal body,Push rod,Booster left end shell,Booster right end shell and the master cylinder shell that setting is connect with accumulator,It is fixedly connected by horizontally disposed support guide bar between the booster left end shell and booster right end shell,The booster left end shell and booster right end shell constitute booster framework,The booster left end shell is perforated axially through push rod is provided with,Described push rod one end is hinged with the pedal body,The push rod other end is horizontally disposed,It is provided with master cylinder piston in the master cylinder shell,The master cylinder piston is to being externally connected with output rod,Push rod perforation level described in the booster right end shell face is provided through output rod perforation,The output end of the output rod passes through output rod perforation to reach inside the booster framework and be arranged with push rod end face,It further include the resetting-mechanism for driving push rod and output rod to be resetted.
Description
Technical field
The present invention relates to brake gear technical fields, and in particular to a kind of electric brake booster.
Background technology
The braking system of traditional combustion engine is using vacuum booster, master cylinder and wheel cylinder system.Vacuum booster needs
Power-assisted is generated by driven by engine generates vacuum degree, needs separately to set air accumulator in electric vehicle and vacuum pump extracts very
The volume of sky, vacuum pump and air accumulator is larger, is unfavorable for arranging.Therefore, the development of electric vehicle and intelligent automobile is to braking system
System proposes new requirement.In the intelligent vehicle with automatic emergency brake function, traditional vacuum booster needs driver to grasp
Make pedal and open air valve, generate power-assisted, can not realize automatic brake functions simply by sensor signal.Vacuum booster
Assist rate be changeless, cannot meet different automobile types trample sense require.
Current electric booster braking system patent, for example, the electronic control brake booster of Bosch automobile, the patent No.
CN103129546A is to realize power-assisted, transmission efficiency by worm and gear and rack and pinion drive mechanism by the power of motor
It is low；When driving force is larger, rack pinion will produce certain inclined square, accelerate the abrasion of transmission mechanism, reduces and uses the longevity
Life.
The brake booster proposed in such as patent CN107284431A, motor generate power and drive ladder by planetary gear train
Shape lead screw pushes master cylinder to generate power-assisted, and the transmission parts of the system are more, efficiency is low, reliability is low；Transmission parts excessively make this help
The weight of power device increases, size increases, complicated and manufacture assembly difficulty is big, is not suitable for practical application；Power-assisted part does not have
Return spring only relies on reset motor, and reaction is slow when braking backhaul, since quality inertia caused greatly is larger, easily causes pedal
It does not feel like oneself.
Invention content
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to：How to provide a kind of without volume
Outer vacuum source, vacuum pump, vacuum tube, occupy little space, light weight, can be adapted for the electric brake for trampling sense of different automobile types
Booster.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions：
A kind of electric brake booster, including pedal body, push rod, booster left end shell, booster right end shell with
And the master cylinder shell of setting is connect with accumulator, the pedal body upper end is hinged on vehicle frame, and lower end is installed with pedal,
The booster left end shell leads to for being fixedly connected with vehicle frame between the booster left end shell and booster right end shell
It crosses horizontally disposed support guide bar to be fixedly connected, the booster left end shell and booster right end shell constitute booster frame
Body, the booster left end shell are slidably fitted in the push rod perforation axially through push rod perforation, the push rod is provided with
Interior, described push rod one end is hinged with the pedal body, and the push rod other end is horizontally disposed, is provided in the master cylinder shell
Master cylinder piston, for the master cylinder piston to output rod is externally connected with, push rod perforation described in the booster right end shell face is horizontal
It is provided through output rod perforation, the output end of the output rod passes through output rod perforation to reach in the booster framework
Portion is simultaneously arranged with push rod end face, further includes the resetting-mechanism for driving push rod and output rod to be resetted.
In this way, when in use, foot pedals drive pedal body to be rotated around the hinge joint of itself and vehicle frame, and pedal body pushes away
Dynamic push rod is perforated along push rod to move linearly to close to the direction of master cylinder body so that push rod pushes output rod, and output rod is driven to make
With on the master cylinder piston of master cylinder body so that braking is realized in master cylinder hydraulic pressure increase.It is provided with resetting-mechanism, after braking,
It drives pedal body to reset, facilitates and trample use next time.In no external power supply, foot pedals can be braked, and be had disconnected
Electric safety margin.The present apparatus can replace the vacuum booster of transmission completely, not need additional vacuum source, vacuum pump, vacuum
The equipment such as pipe, occupy little space, and light quality is easy to use.
As an optimization, the push rod is located at the part in booster framework and is socketed with leading screw, is screwed on and matches on the outside of the leading screw
Conjunction has screw nut sleeve, the feed screw nut to put on support guide bar described in face and be provided through perforation, the feed screw nut
Set is slidably fitted on the support guide bar, and left end support plate and right end support plate, the left side are socketed on the outside of the push rod
End support plate and right end support plate are respectively positioned in the booster framework, face water on the left end support plate and right end support plate
Flat to be provided through slide opening, the left end support plate and right end support plate are slidably fitted in the support guide by the slide opening
On bar, the support guide bar is screwed with stop nut, and the stop nut is arranged in the left end support plate far from the right side
The side of support plate, the leading screw is held to connect setting, the leading screw with the left end support plate and right end support plate by bearing
One end on the outside of the left end support plate is sequentially connected with power input mechanism；Being horizontally disposed in the right end support plate has
Unthreaded hole is sliding combined with power-assisted connecting rod in the unthreaded hole, and power-assisted connecting rod one end is fixedly connected with the screw nut sleeve, separately
One end is fixedly connected with vertically arranged power-assisted push plate, and the power-assisted push plate is arranged in the right end support plate far from the left end
The side of support plate is provided with protrusion among the power-assisted push plate to the direction far from the right end support plate, in the protrusion
Between push rod level described in face be provided through push rod through-hole, reagentia gasket is provided in the push rod through-hole, it is described anti-
Gasket side should be acted on to contact with the push rod end and push rod through-hole, the other side is contacted with output boom end.
In this way, power input mechanism input power, drives leading screw rotation, rolling is provided between leading screw and screw nut sleeve
Pearl, leading screw rotation drive screw nut sleeve to be moved along support guide pole length direction, and support guide bar can be to screw nut sleeve
Movement be oriented to, movement can drive power-assisted push plate campaign to screw nut sleeve by power-assisted connecting rod in the horizontal direction, and power-assisted push away
The power-assisted and collective effect of plate and push rod realize that power-assisted and push rod force are converged to form power output, power output in reaction gasket
It is acted on by output rod on the master cylinder piston of master cylinder shell so that braking is realized in master cylinder hydraulic pressure increase.Utilize leading screw and leading screw
Nut set cooperation drives power-assisted push plate action, with push rod collective effect, can preferably realize braking, while leading screw and leading screw spiral shell
Mother set transmission efficiency, it is easy to use.Reagentia gasket is the critical piece that push rod and power-assisted are joined together, its function
It is that power-assisted is enable smoothly to pass to master cylinder, also can guarantee the stabilization for trampling sense.
As an optimization, the power input mechanism includes the motor being fixedly mounted on the outside of the booster, the motor
Output shaft it is horizontally disposed and be installed with motor output gear, the motor output gear is located in booster framework, institute
It states motor output gear to engage with first order gear, first order gear is mounted on described by the first order gear shaft of centre setting
On booster left end shell and booster right end shell, the first order gear is engaged with the second level gear wheel of deceleration mechanism；
The second level gear wheel is located on one end on the outside of the left end support plate mounted on the leading screw and connects with the leading screw key
It connects.
In this way, motor action, drives motor output gear rotation, motor output gear to drive the rotation of first order gear, the
One-stage gear drives the second level bull gear drive of deceleration mechanism, second level gear wheel to drive leading screw to rotate by key, transmission ratio
Accurately, transmission efficiency preferably can drive leading screw to rotate.
As an optimization, the resetting-mechanism includes being arranged between the output rod and the booster right end inner walls
Output rod resetting spring, further include that the power-assisted being arranged between the power-assisted push plate and the booster right end inner walls pushes away
Sheet reset spring.
In this way, being provided with output rod resetting spring, after braking, output rod resetting spring can push output rod to reset,
Convenient braking next time uses.It is provided with power-assisted push plate resetting spring, after braking, push rod resetting spring can push power-assisted to push away
Sheet reset, convenient braking next time use.
As an optimization, the electric brake booster further includes electronic control unit ECU, is equipped in the power-assisted push plate
Displacement sensor, institute's displacement sensors, motor are electrically connected with the electronic control unit ECU.
In this way, the displacement difference between push rod and power-assisted push plate is detected using displacement sensor, by the displacement difference signal of detection
Electronic control unit ECU is passed to, electronic control unit ECU controls velocity of rotation and the output of motor according to displacement difference signal
Torque, the velocity of rotation of better adjusting screw so that displacement difference is less than preset desired value, preferably realizes that power-assisted pushes away
Plate follows the servo motion of push rod.
As an optimization, the pedal body is provided with angular displacement sensor, the angle displacement transducer with vehicle frame articulated position
Device is electrically connected with the electronic control unit ECU.
In this way, angular displacement sensor is provided with, at angular displacement sensor detection pedal body and vehicle frame articulated position
Rotation angle, rotary angle signal is then passed into electronic control unit ECU, electronic control unit ECU can be better
The rotating speed and output torque of motor are adjusted.
As an optimization, the support guide bar is provided with circumferentially has been uniformly arranged three along the push rod.
In this way, support guide bar is provided with three, it can be preferably to booster left end shell and booster right end shell
It is attached fixation so that booster framework globality higher.
As an optimization, the power-assisted connecting rod is provided with three and is circumferentially uniformly arranged along the push rod, and the power-assisted connects
60 degree of settings are spaced between bar and the support guide bar.
In this way, can so that braking process is more steady, vibrations are reduced so that booster framework internal structure is laid out more
Rationally, the service life is longer.
As an optimization, it is arranged between the push rod and the hinged end of the pedal body and the booster left end shell
There is dust cover.
In this way, can preferably ensure the cleaning inside booster framework, dust is avoided to pollute.
This electric brake booster can pass through pre-set target in logical algorithm in change electronic control unit EUC
Displacement difference, you can realize different assist rates, different assist rates may be implemented driver different to trample sense.
When motor powers off, power-assisted push plate returns to initial position (far from braking under the action of power-assisted push plate resetting spring
The extreme position of master cylinder).Under power blackout situation, when driver's brake pedal ontology, and brake pedal ontology is hinged pushes away
Bar moves linearly in the through-hole of lead screw to master cylinder direction, and for independent action in reagentia gasket, push rod force passes through output
Bar pushes brake master cylinder piston, and braking is realized in the increase of master cylinder hydraulic pressure, to have power outage security nargin.It is helped with traditional vacuum
Power device is compared, and can making booster using electronic control unit ECU controls, faster, fluctuation is more for response speed during braking
It is small, improve stability and the safety of braking.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of electric brake booster described in the specific embodiment of the invention.
Fig. 2 is the structure enlargement diagram of leading screw in Fig. 1.
Fig. 3 is the structure enlargement diagram of support guide bar in Fig. 1.
Fig. 4 is the cutaway view Amplified image of A-A in Fig. 1.
Fig. 5 is the structural schematic diagram that first order gear is engaged with the second level gear wheel of deceleration mechanism in Fig. 1.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings.
When it is implemented, as Figure 1-Figure 5, a kind of electric brake booster, including pedal body 1, push rod 2, power-assisted
Device left end shell 27, booster right end shell 11 and the master cylinder shell 21 that setting is connect with accumulator 22, the pedal body 1
Upper end is hinged on vehicle frame, and lower end is installed with pedal 111, and the booster left end shell 27, which is used to fix with vehicle frame, to be connected
It connects, is fixed and connected by horizontally disposed support guide bar 16 between the booster left end shell 27 and booster right end shell 11
It connects, the booster left end shell 27 and booster right end shell 11 constitute booster framework, the booster left end shell 27
Axially through push rod perforation is provided with, the push rod 2 is slidably fitted in the push rod perforation, 2 one end of the push rod and institute
It is hinged to state pedal body 1,2 other end of the push rod is horizontally disposed, and master cylinder piston 20 is provided in the master cylinder shell 21, described
Master cylinder piston 20 is to being externally connected with output rod 23, and 2 perforation level of push rod described in 11 face of booster right end shell is through setting
It is equipped with output rod perforation, the output end of the output rod 23 passes through output rod perforation to reach inside the booster framework simultaneously
It is arranged with 2 end face of the push rod, further includes the resetting-mechanism for driving push rod 2 and output rod 23 to be resetted.
In this way, when in use, foot pedals drive pedal body to be rotated around the hinge joint of itself and vehicle frame, and pedal body pushes away
Dynamic push rod is perforated along push rod to move linearly to close to the direction of master cylinder body so that push rod pushes output rod, and output rod is driven to make
With on the master cylinder piston of master cylinder body so that braking is realized in master cylinder hydraulic pressure increase.It is provided with resetting-mechanism, after braking,
It drives pedal body to reset, facilitates and trample use next time.In no external power supply, foot pedals can be braked, and be had disconnected
Electric safety margin.The present apparatus can replace the vacuum booster of transmission completely, not need additional vacuum source, vacuum pump, vacuum
The equipment such as pipe, occupy little space, and light quality is easy to use.
In the present embodiment, the push rod 2 is located at the part in booster framework and is socketed with leading screw 10,10 outside of the leading screw
It is screwed on and is combined with screw nut sleeve 9, support guide bar 16 described in face is provided through perforation, institute on the screw nut sleeve 9
It states screw nut sleeve 9 to be slidably fitted on the support guide bar 16,2 outside of the push rod is socketed with left end support plate 8 and the right side
Support plate 12, the left end support plate 8 and right end support plate 12 is held to be respectively positioned in the booster framework, the left end support plate
8 and right end support plate 12 on face level be provided through slide opening, the left end support plate 8 and right end support plate 12 pass through described
Slide opening is slidably fitted on the support guide bar 16, and the support guide bar 16 is screwed with stop nut, the stop nut
It is arranged in side of the left end support plate 8 far from the right end support plate 12, the leading screw 10 passes through bearing 7 and the left end
Support plate 8 and the connection setting of right end support plate 12, the leading screw 10 is located at one end on the outside of the left end support plate 8 and power is defeated
Enter mechanism driving connection；Being horizontally disposed in the right end support plate 12 has unthreaded hole, and power-assisted connecting rod is sliding combined in the unthreaded hole
24, described 24 one end of power-assisted connecting rod is fixedly connected with the screw nut sleeve 9, and the other end is fixedly connected with vertically arranged power-assisted
Push plate 14, the power-assisted push plate 14 are arranged in side of the right end support plate 12 far from the left end support plate 8, the power-assisted
The direction far from the right end support plate 12 is provided with protrusion among push plate 14,2 water of push rod described in the intermediate face of protrusion
It is flat to be provided through push rod through-hole, reagentia gasket 15, the reagentia gasket 15 1 are provided in the push rod through-hole
Side is contacted with 2 end of the push rod and push rod through-hole, and the other side is contacted with 23 end of output rod.Specifically, 8 He of left end support plate
Right end support plate 12 can be directly anchored in booster framework.
In this way, power input mechanism input power, drives leading screw rotation, ball is provided between leading screw and screw nut sleeve
33, leading screw rotation drives screw nut sleeve to be moved along support guide pole length direction, and support guide bar can be to screw nut sleeve
Movement be oriented to, movement can drive power-assisted push plate campaign to screw nut sleeve by power-assisted connecting rod in the horizontal direction, and power-assisted push away
The power-assisted and collective effect of plate and push rod realize that power-assisted and push rod force are converged to form power output, power output in reaction gasket
It is acted on by output rod on the master cylinder piston of master cylinder shell so that braking is realized in master cylinder hydraulic pressure increase.Utilize leading screw and leading screw
Nut set cooperation drives power-assisted push plate action, with push rod collective effect, can preferably realize braking, while leading screw and leading screw spiral shell
Mother set transmission efficiency, it is easy to use.Reagentia gasket is the critical piece that push rod and power-assisted are joined together, its function
It is that power-assisted is enable smoothly to pass to master cylinder, also can guarantee the stabilization for trampling sense.
In the present embodiment, the power input mechanism includes the motor 26 being fixedly mounted on the outside of the booster, described
The output shaft of motor 26 is horizontally disposed and is installed with motor output gear 28, and the motor output gear 28 is located at booster
In framework, the motor output gear 28 is engaged with first order gear 29, the first order that first order gear 29 passes through centre setting
Gear shaft 31 is mounted on the booster left end shell 27 and booster right end shell 11, the first order gear 29 and deceleration
The second level gear wheel 6 of mechanism engages；The second level gear wheel 6 is located at the left end support plate 8 mounted on the leading screw 10
It is keyed on the one end in outside and with the leading screw 10.
In this way, motor action, drives motor output gear rotation, motor output gear to drive the rotation of first order gear, the
One-stage gear drives the second level bull gear drive of deceleration mechanism, second level gear wheel to drive leading screw to rotate by key, transmission ratio
Accurately, transmission efficiency preferably can drive leading screw to rotate.Specifically, the power input mechanism can be gear drive,
Turbine and worm transmission, V belt translation and chain drive, belong to this patent scope of the claimed.
In the present embodiment, the resetting-mechanism includes setting in the output rod 23 and the booster right end shell 11
Output rod resetting spring 19 between wall further includes being arranged in the power-assisted push plate 14 and 11 inner wall of booster right end shell
Between power-assisted push plate resetting spring 18.
In this way, being provided with output rod resetting spring, after braking, output rod resetting spring can push output rod to reset,
Convenient braking next time uses.It is provided with power-assisted push plate resetting spring, after braking, push rod resetting spring can push power-assisted to push away
Sheet reset, convenient braking next time use.
In the present embodiment, the electric brake booster further includes electronic control unit ECU25, in the power-assisted push plate 14
Displacement sensor 17 is installed, institute's displacement sensors 17, motor 26 are electrically connected with the electronic control unit ECU25.
In this way, the displacement difference between push rod and power-assisted push plate is detected using displacement sensor, by the displacement difference signal of detection
Electronic control unit ECU is passed to, electronic control unit ECU controls velocity of rotation and the output of motor according to displacement difference signal
Torque, the velocity of rotation of better adjusting screw so that displacement difference is less than preset desired value, preferably realizes that power-assisted pushes away
Plate follows the servo motion of push rod.
In the present embodiment, the pedal body 1 is provided with angular displacement sensor 32, the angular displacement with vehicle frame articulated position
The sensor 32 and electronic control unit ECU25 is electrically connected.
In this way, angular displacement sensor is provided with, at angular displacement sensor detection pedal body and vehicle frame articulated position
Rotation angle, rotary angle signal is then passed into electronic control unit ECU, electronic control unit ECU can be better
The rotating speed and output torque of motor are adjusted.
In the present embodiment, the support guide bar 16 is provided with circumferentially has been uniformly arranged three along the push rod 2.
In this way, support guide bar is provided with three, it can be preferably to booster left end shell and booster right end shell
It is attached fixation so that booster framework globality higher.Specifically, support guide bar can be provided with two, four or
Person's any amount belongs to this patent scope of the claimed.
In the present embodiment, the power-assisted connecting rod 24 is provided with three and is circumferentially uniformly arranged along the push rod 2, described to help
60 degree of settings are spaced between power connecting rod 24 and the support guide bar 16.
In this way, can so that braking process is more steady, vibrations are reduced so that booster framework internal structure is laid out more
Rationally, the service life is longer.
In the present embodiment, the push rod 2 and the hinged end of the pedal body 1 and the booster left end shell 27 it
Between be provided with dust cover 3.
In this way, can preferably ensure the cleaning inside booster framework, dust is avoided to pollute.
This electric brake booster can pass through pre-set mesh in logical algorithm in change electronic control unit EUC25
Marker displacement is poor, you can realizes different assist rates, different assist rates may be implemented driver different to trample sense.
When motor 26 powers off, it is (remote that power-assisted push plate 14 returns to initial position under the action of power-assisted push plate resetting spring 18
Extreme position from master cylinder).Under power blackout situation, when driver's brake pedal ontology 1, with brake pedal ontology 1
Hinged push rod 2 moves linearly in the through-hole of lead screw 10 to master cylinder direction, and independent action is pushed away in reagentia gasket 15
Bar 2 pushes brake master cylinder piston 20 by output rod 23, and braking is realized in the increase of master cylinder hydraulic pressure, abundant to have power outage security
Degree.Compared with traditional vacuum booster, booster can be made to be rung during braking using electronic control unit ECU25 controls
It answers speed faster, fluctuates smaller, improve stability and the safety of braking.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that；It still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces；And these modifications or replacements, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses, should all cover in the claim of the present invention and the range of specification.
Claims (9)
1. a kind of electric brake booster, which is characterized in that right including pedal body, push rod, booster left end shell, booster
End housing and the master cylinder shell that setting is connect with accumulator, the pedal body upper end are hinged on vehicle frame, and peace is fixed in lower end
Equipped with pedal, the booster left end shell with vehicle frame for being fixedly connected, the booster left end shell and booster right end
It is fixedly connected by horizontally disposed support guide bar between shell, the booster left end shell and booster right end shell structure
At booster framework, the booster left end shell is slidably fitted in institute axially through push rod perforation, the push rod is provided with
It states in push rod perforation, described push rod one end is hinged with the pedal body, and the push rod other end is horizontally disposed, the master cylinder shell
It is provided with master cylinder piston in vivo, the master cylinder piston is pushed away to output rod is externally connected with described in the booster right end shell face
Bar perforation level is provided through output rod perforation, and the output end of the output rod passes through to be helped described in output rod perforation arrival
Simultaneously it is arranged with push rod end face inside power device framework, further includes for driving what push rod and output rod resetted to answer
Position mechanism.
2. a kind of electric brake booster according to claim 1, which is characterized in that the push rod is located at booster framework
Interior part is socketed with leading screw, is screwed on the outside of the leading screw and is combined with screw nut sleeve, the feed screw nut is put on described in face
Support guide bar is provided through perforation, and the screw nut sleeve is slidably fitted on the support guide bar, outside the push rod
Side is socketed with left end support plate and right end support plate, and the left end support plate and right end support plate are respectively positioned on the booster framework
Interior, face level is provided through slide opening, the left end support plate and right end branch on the left end support plate and right end support plate
Fagging is slidably fitted in by the slide opening on the support guide bar, and the support guide bar is screwed with stop nut, described
Stop nut is arranged in side of the left end support plate far from the right end support plate, and the leading screw passes through bearing and the left side
End support plate connects setting with right end support plate, and the leading screw is located at one end on the outside of the left end support plate and inputs machine with power
Structure is sequentially connected；Being horizontally disposed in the right end support plate has unthreaded hole, and power-assisted connecting rod is sliding combined in the unthreaded hole, described to help
Power connecting rod one end is fixedly connected with the screw nut sleeve, and the other end is fixedly connected with vertically arranged power-assisted push plate, described to help
Plate is pushed to be arranged among side of the right end support plate far from the left end support plate, the power-assisted push plate to far from described
The direction of right end support plate is provided with protrusion, and push rod level is provided through push rod through-hole, institute described in the intermediate face of protrusion
It states and is provided with reagentia gasket in push rod through-hole, reagentia gasket side connects with the push rod end and push rod through-hole
It touches, the other side is contacted with output boom end.
3. a kind of electric brake booster according to claim 2, which is characterized in that the power input mechanism includes solid
The output shaft of motor of the Dingan County on the outside of the booster, the motor is horizontally disposed and is installed with motor output gear
Wheel, the motor output gear are located in booster framework, and the motor output gear is engaged with first order gear, first order tooth
Wheel is mounted on by the first order gear shaft of intermediate setting on the booster left end shell and booster right end shell, and described the
One-stage gear is engaged with the second level gear wheel of deceleration mechanism；The second level gear wheel is located at the left side mounted on the leading screw
It holds on one end on the outside of support plate and is keyed with the leading screw.
4. a kind of electric brake booster according to claim 3, which is characterized in that the resetting-mechanism includes that setting exists
Output rod resetting spring between the output rod and the booster right end inner walls further includes that setting is pushed away in the power-assisted
Power-assisted push plate resetting spring between plate and the booster right end inner walls.
5. a kind of electric brake booster according to claim 3, which is characterized in that the electric brake booster also wraps
Include electronic control unit ECU, displacement sensor be installed in the power-assisted push plate, institute's displacement sensors, motor with it is described
Electronic control unit ECU is electrically connected.
6. a kind of electric brake booster according to claim 5, which is characterized in that the pedal body is hinged with vehicle frame
Position is provided with angular displacement sensor, and the angular displacement sensor is electrically connected with the electronic control unit ECU.
7. a kind of electric brake booster according to claim 1, which is characterized in that the support guide bar is provided with edge
The push rod has circumferentially been uniformly arranged three.
8. a kind of electric brake booster according to claim 7, which is characterized in that the power-assisted connecting rod is provided with three
And be circumferentially uniformly arranged along the push rod, 60 degree of settings are spaced between the power-assisted connecting rod and the support guide bar.
9. a kind of electric brake booster according to claim 1, which is characterized in that the push rod and the pedal body
It is provided with dust cover between hinged end and the booster left end shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672965.3A CN108715162A (en) | 2018-06-26 | 2018-06-26 | A kind of electric brake booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672965.3A CN108715162A (en) | 2018-06-26 | 2018-06-26 | A kind of electric brake booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108715162A true CN108715162A (en) | 2018-10-30 |
Family
ID=63912300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810672965.3A Pending CN108715162A (en) | 2018-06-26 | 2018-06-26 | A kind of electric brake booster |
Country Status (1)
| Country | Link |
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| CN (1) | CN108715162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022237179A1 (en) * | 2021-05-12 | 2022-11-17 | 浙江大学台州研究院 | Decoupling type electric power-assisted brake device |
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