CN206797370U - The transmission mechanism and EHB of a kind of returning quickly - Google Patents
The transmission mechanism and EHB of a kind of returning quickly Download PDFInfo
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- CN206797370U CN206797370U CN201720440572.0U CN201720440572U CN206797370U CN 206797370 U CN206797370 U CN 206797370U CN 201720440572 U CN201720440572 U CN 201720440572U CN 206797370 U CN206797370 U CN 206797370U
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- worm gear
- transmission mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 208000032370 Secondary transmission Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Transmission Devices (AREA)
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- Braking Systems And Boosters (AREA)
Abstract
It the utility model is related to a kind of transmission mechanism of returning quickly, for EHB, including intermeshing worm screw (8) and worm gear (9), worm screw (8) is used to the brake boost of motor (7) passing to worm gear (9), worm gear (9) is used to brake boost passing to hydraulic brake master (6) by connected secondary drive mechanism, transmission mechanism also includes being used for the flexible member for providing twisting resistance, flexible member one end is connected with worm gear (9), another end position is fixed, in the initial position of transmission mechanism, pretightning force be present in flexible member, when motor (7) produces brake boost, the rotation of worm gear (9) makes flexible member produce moment of torsion, moment of torsion is opposite with worm gear (9) direction of rotation.Compared with prior art, the utility model has the advantages that seating velocity is fast, compact-sized.
Description
Technical field
A kind of transmission mechanism is the utility model is related to, more particularly, to the transmission mechanism and electro-hydraulic of a kind of returning quickly
Brakes.
Background technology
Increase the Tough questions brought to solve car ownership, vehicle electric, intellectuality are that current auto industry is sought
The important directions sought to achieve breakthrough.In the operating mode of city, the brake percentage of automobile is more frequent, therefore and the energy that consumes to account for automobile consumption total
A big chunk of energy, the one important difference of electric automobile and orthodox car is exactly that regenerative braking is introduced in brakes,
The energy of regenerative braking recovery can increase the course continuation mileage of automobile, make up the deficiency of current battery technology, reach energy-conserving and environment-protective
Purpose；In addition, the power source of electric automobile is substituted completely or partially by motor, this is resulted in orthodox car brakes
Vacuum booster can not be continuing with, it is necessary to add extra vacuum pump apparatus；In order to reduce the probability of happening of traffic accident,
Mitigate driver workload, intelligent vehicle oneself focus and auto industry through turning into the research of world's Vehicle Engineering increase
New power, many developed countries are all brought into the intelligent transportation system each given priority to, vehicle intellectualized development
Demand is proposed to line control brake system.
Vehicle electric, intelligent development have promoted traditional brakes to develop to brake-by-wire.As line traffic control
Product early stage of brakes, EHB (EHB) compared to electromechanical braking system (EMB) technology more into
Ripe, serious forgiveness height (standby execution system after failure being present), strong antijamming capability, arrangement is conveniently.Corresponding Conventional braking systems,
EHB has the advantages that safety, comfortable, response is fast, be easily achieved regenerative braking, brake force accurately controls, and can pass through control
Algorithm processed realizes the active safety control function such as ABS, ESP, TCS.EHB developing direction is to improve constantly its combination property, gently
Measure small-sized and inexpensive, and system altitude is integrated and modularization.
Compared with traditional brakes, when EHB needs also exist for meeting faster brake pressure release
Between, avoid existing in master cylinder the potential safety hazard that the problems such as larger remaining hydraulic coupling brings.Due to being passed in Electro-hydraulic brake
The presence of motivation structure resistance, especially for worm and gear, there is relatively low reverse efficiency, make system in the feelings helped without external force
Under condition, master cylinder rate of pressure release is slow and residual brake hydraulic coupling be present.If make driver using braking motor reversion
Structure returning quickly, by increase return during hydraulic coupling high-precision control difficulty, particularly when the EHB
Electric control part failure when, master cylinder will be unable to return, bring potential safety hazard.So a kind of EHB is needed to be driven
Mechanism returning device, and occupy little space, be compact-sized, to enable a system to be arranged in compact automobile front chamber.
The Chinese patent of Application No. 201610265555.8, the push rod of helical spring and master cylinder is connected, utilized
The resilience of rack return spring makes push rod counter motion, and its shortcoming is：The reduction length of helical spring in itself needs to take braking
Master cylinder axial space, and because rack pinion, worm and gear two-stage are driven, transmission resistance is larger, and reverse efficiency is relatively low, promotes transmission
Mechanism return is, it is necessary to the compression spring of large-size.Return spring is arranged on worm gear, reduces rack pinion subband
The return resistance come.
Utility model content
The purpose of this utility model is exactly to provide a kind of space-consuming the defects of overcoming above-mentioned prior art to exist
The transmission mechanism and EHB of small, compact-sized returning quickly.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of transmission mechanism of returning quickly, for EHB, including intermeshing worm and worm wheel,
Described worm screw is used to the brake boost of motor passing to worm gear, and described worm gear is used for brake boost by being connected thereto
Secondary drive mechanism pass to hydraulic brake master,
Described transmission mechanism also includes being used for the flexible member for providing twisting resistance, described flexible member one end and worm gear
Connection, another end position is fixed, and in the initial position of transmission mechanism, flexible member has pretightning force, and motor produces brake boost
When, the rotation of worm gear makes flexible member produce moment of torsion, and described moment of torsion is opposite with worm gear direction of rotation.
Described transmission mechanism also includes worm gear end cap, and described worm gear end cap is parallel with worm gear and position is fixed, described
Flexible member one end be fixed on worm gear end cap.
Described flexible member is spring.
Described spring includes torsionspring and/or scroll spring.
A kind of EHB of the transmission mechanism with described returning quickly, including the electricity being sequentially connected
The worm screw of machine, transmission mechanism, secondary transmission mechanism and hydraulic brake master, described motor and transmission mechanism is coaxially connected.
Described secondary transmission mechanism includes the worm gear of pitch wheel and rack, described gear and transmission mechanism
Coaxially connected, described rack and the piston of hydraulic brake master connect in the same direction.
Compared with prior art, the utility model has advantages below：
(1) by the pretightning force being pre-applied on flexible member, and as brake operation is carried in flexible member
On power, make brake cancel braking when, transmission mechanism flexible member moment of torsion effect under returning quickly so that master cylinder
Interior hydraulic coupling rapid decrease, improve braking safety.
(2) torsionspring, scroll spring is used to be occupied little space as energy storage equipment compared to compression, extension spring.
(3) torsionspring is arranged between worm gear and worm gear end cap, is not take up master cylinder axial space, so as to reduce system
Dynamic device axial dimension.
(4) torsionspring directly pushes back worm gear-endless screw, compared to the returning device for pushing back rack and wheel-worm gear-endless screw,
It is more efficient.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment EHB；
Fig. 2 is Fig. 1 A-A sectional views；
Reference：
1 is pedal push rod；2 be master cylinder push rod；3 be rack；4 be brake casing；5 be master cylinder joint；6 be hydraulic braking
Master cylinder；7 be motor；8 be worm screw；9 be worm gear；10 be gear；11 be worm gear end cap；12 be torsionspring.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
Embodiment
A kind of transmission mechanism of returning quickly, including intermeshing worm screw 8 and worm gear 9, worm screw 8 are used for motor 7
Brake boost passes to worm gear 9, and worm gear 9 is used to brake boost passing to hydraulic pressure system by connected secondary drive mechanism
Dynamic master cylinder 6, transmission mechanism also include worm gear end cap 11 and the torsionspring 12 for providing twisting resistance, worm gear end cap 11 and worm gear
9 is parallel and position is fixed, and the one end of torsionspring 12 is connected with worm gear 9, and the other end is fixed on worm gear end cap 11, in transmission mechanism
Initial position, there is pretightning force in torsionspring 12, when motor 7 produces brake boost, the rotation of worm gear 9 produces flexible member
Moment of torsion, moment of torsion are opposite with the direction of rotation of worm gear 9.
The transmission mechanism of the returning quickly is applied to EHB, i.e. motor 7, transmission mechanism, gear
10th, rack 3 and hydraulic brake master 6 are sequentially connected, wherein, motor 7 is coaxially connected with, worm screw 8, and gear 10 and worm gear 9 are coaxial
Connection, rack 3 engages with gear 10, and is connected in the same direction with the piston of hydraulic brake master 6.
As shown in Figure 1, 2, torsionspring 12 is arranged between worm gear 9 and worm gear end cap 11, and its one end is connected with worm gear 9,
The other end is connected with end cap 11.
In the normal power-assisted work of brake, driver's foot pedal, active force is delivered to master cylinder by pedal push rod 1 and pushed away
Bar 2, the sensor in brake casing 4 experience the displacement of master cylinder push rod 2, send a signal to control centre, control centre
Controlled motor 7 rotates, and provides power-assisted by motor 7, the moment of torsion that motor 7 exports, reaches worm gear 9 through worm screw 8, drive worm gear 9 to rotate,
So as to drive the one end for the torsionspring 12 being attached thereto to rotate, because the other end of torsionspring is fixed on worm gear end cap 11
On, worm gear end cap is connected with brake casing 4, the both ends of torsionspring 12 has been rotated against certain angle, so as to torsion spring 12
Moment of torsion is inside generated, and it is opposite with the direction of rotation of current worm gear 9；Worm gear 9 is connected with gear 10, the rotating band moving teeth of gear 10
The straight-line displacement of bar 3, so as to promote master cylinder 6 to produce brake fluid pressure, complete braking procedure.When cancelling braking, motor 7 is no longer
Output torque, now, due to the effect of moment of torsion caused by torsionspring 12, overcome the resistance between rack-and-pinion, worm and gear,
Drive worm gear 9, gear 10 to rotate, and direction with during braking on the contrary, so as to push back rack 3, meanwhile, the work of hydraulic brake master 6
Plug is connected with master cylinder joint 5, together promotes rack 3, promotes it to be quickly returning to initial position, so as to reduce the internal pressure of master cylinder 6
Power returns to the time of original state.
Due in assembling, in the initial position of transmission mechanism, being already applied to 12 certain pretightning force of torsionspring, making transmission
The final stage of mechanism return, torsionspring remain to provide larger torsion, ensure and accelerate transmission mechanism to return to initial position,
Ensure remaining hydraulic coupling in master cylinder 6 no longer be present.
Claims (6)
- A kind of 1. transmission mechanism of returning quickly, for EHB, including intermeshing worm screw (8) and worm gear (9), described worm screw (8) is used to the brake boost of motor (7) passing to worm gear (9), and described worm gear (9) is used for will braking Power-assisted passes to hydraulic brake master (6) by connected secondary drive mechanism,Characterized in that, described transmission mechanism also includes being used for the flexible member for providing twisting resistance, described flexible member one End is connected with worm gear (9), and another end position is fixed, and in the initial position of transmission mechanism, flexible member has pretightning force, motor (7) when producing brake boost, the rotation of worm gear (9) makes flexible member produce moment of torsion, described moment of torsion and worm gear (9) direction of rotation Conversely.
- 2. the transmission mechanism of a kind of returning quickly according to claim 1, it is characterised in that described transmission mechanism also wraps Worm gear end cap (11) is included, described worm gear end cap (11) is parallel with worm gear (9) and position is fixed, and described flexible member one end is consolidated It is scheduled on worm gear end cap (11).
- 3. the transmission mechanism of a kind of returning quickly according to claim 1, it is characterised in that described flexible member is bullet Spring.
- 4. the transmission mechanism of a kind of returning quickly according to claim 3, it is characterised in that described spring includes reversing Spring and/or scroll spring.
- 5. a kind of EHB of the transmission mechanism of band described returning quickly any just like Claims 1 to 4, its It is characterised by, including motor (7), transmission mechanism, secondary drive mechanism and the hydraulic brake master (6) being sequentially connected, it is described The worm screw (8) of motor (7) and transmission mechanism is coaxially connected.
- 6. EHB according to claim 5, it is characterised in that described secondary driver structure includes Pitch wheel (10) and rack (3), the worm gear (9) of described gear (10) and transmission mechanism is coaxially connected, described Rack (3) is connected in the same direction with the piston of hydraulic brake master (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440572.0U CN206797370U (en) | 2017-04-25 | 2017-04-25 | The transmission mechanism and EHB of a kind of returning quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440572.0U CN206797370U (en) | 2017-04-25 | 2017-04-25 | The transmission mechanism and EHB of a kind of returning quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206797370U true CN206797370U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720440572.0U Withdrawn - After Issue CN206797370U (en) | 2017-04-25 | 2017-04-25 | The transmission mechanism and EHB of a kind of returning quickly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945653A (en) * | 2017-04-25 | 2017-07-14 | 上海同驭汽车科技有限公司 | The transmission mechanism and EHB of a kind of returning quickly |
-
2017
- 2017-04-25 CN CN201720440572.0U patent/CN206797370U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945653A (en) * | 2017-04-25 | 2017-07-14 | 上海同驭汽车科技有限公司 | The transmission mechanism and EHB of a kind of returning quickly |
| CN106945653B (en) * | 2017-04-25 | 2024-07-02 | 上海同驭汽车科技有限公司 | Quick return transmission mechanism and electronic hydraulic brake system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20240702 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20240702 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |