CN109941257A - A kind of device for realizing Automobile redundant braking using energy-stored spring - Google Patents
A kind of device for realizing Automobile redundant braking using energy-stored spring Download PDFInfo
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- CN109941257A CN109941257A CN201910325677.5A CN201910325677A CN109941257A CN 109941257 A CN109941257 A CN 109941257A CN 201910325677 A CN201910325677 A CN 201910325677A CN 109941257 A CN109941257 A CN 109941257A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 239000010985 leather Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Abstract
The invention discloses a kind of devices that Automobile redundant braking is realized using energy-stored spring, belong to automatic driving vehicle braking technology field.The device includes motor, transmission component, spring, ball-screw apparatus and piston, motor couples with first gear interference fit, first gear is engaged with duplicate gear, duplicate gear is engaged with second gear, second gear couples with ball-screw apparatus, the lead screw of ball-screw apparatus is connect with the piston, and spring is connected between the screw and piston of ball-screw apparatus, and rotation limitation component is also equipped on the lead screw of ball-screw apparatus.The device is equipped with fuel feed hole and oil outlet, is connected respectively with the brake of master cylinder and wheel.Alternate brake of the device as automatic driving vehicle, realize the redundancy setting of motor vehicle braking system, make automatic driving vehicle in the case where vehicle power failure makes the extreme conditions such as vehicle line traffic control thrashing, be still able to achieve braking function, improves the security performance of automatic driving vehicle.
Description
Technical field
The present invention relates to automatic driving vehicle braking technology fields, specially a kind of to realize Automobile redundant using energy-stored spring
The device of braking.
Background technique
Brake system of car is closely related safely with running, and brake system of car generally uses double back line structure, with
Improve the reliability of service brake.With the development in the unmanned direction of automobile, advanced driving assistance system (ADAS) and drive automatically
Sail required by the personal vehicle systems such as system (ADS) that (so-called " from main brake ", refers in non-brake pedal from main brake
In the case where braking that part or all of wheel is applied) market demand is more and more obvious.
Mechanical connection of the line control brake system because eliminating Conventional braking systems, have structure is simpler, control is more flexible,
The advantages that response time is shorter, braking ability is more preferable, maintenance is simple.The line control brake system proposed at present mainly includes electricity
Sub- brake fluid system (EHB) and mechanical type brake system electric (EMB) etc..It functionally sees, line control brake system is on the one hand
It can coordinate friction catch and regenerative braking, neatly to support electric car under the premise of not influencing brake pedal feel to the greatest extent
It may mostly recycle braking energy；On the other hand, it is also convenient to realize from main brake, to meet personal vehicle system to braking
Requirement.
But the power supply of line control brake system heavy dependence automobile, power supply once failure or out of power, from main brake
System will fail, and in the case that vehicle still has certain speed at this time, will result in serious traffic accident.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of utilization energy storage bullet
Spring realizes that the device of Automobile redundant braking realizes the superfluous of motor vehicle braking system as the spare braking device of automatic driving vehicle
Remaining setting.
To achieve the above object, the present invention adopts the following technical scheme: a kind of realize Automobile redundant system using energy-stored spring
Dynamic device, including motor, ball-screw apparatus and piston, which is characterized in that further include transmission component, rotation limitation component and
Spring；The motor couples with the transmission component, and the transmission component couples with the ball-screw apparatus；The ball wire
Thick stick device includes screw, ball and lead screw, and one end of the lead screw is connect with the piston, and rotation limit is also equipped on the lead screw
Component processed；The spring is housed between the screw and the piston；It is formed between the piston and the shell of the device
Cavity is oil pocket, and the fuel feed hole and oil outlet being connected to oil pocket are offered on the shell.
Further, the transmission component includes first gear, second gear and duplicate gear, and the duplicate gear includes
One gear wheel and a pinion gear, interference fit couples between the output shaft of the motor and the first gear, and described the
One gear is engaged with the gear wheel on the duplicate gear, and the pinion gear on the duplicate gear is engaged with the second gear,
The second gear couples with the screw of the ball-screw apparatus.
Further, key is also equipped between the second gear and the screw.
Further, the duplicate gear is installed inside housings by bearing.
Further, support shaft is fixedly installed in the shell, the duplicate gear is rotatably arranged on the support shaft
On, the bearing is arranged between the duplicate gear and the support shaft.
Further, the lead screw runs through the screw, and the ball is housed between the lead screw and the screw, described
Screw is fixed on the inside of the shell by bearing.
Further, the fuel feed hole is connected by oil circuit with master cylinder, and the oil outlet passes through oil circuit and vehicle
The brake of wheel is connected.
Further, the middle part of the piston lateral surface is equipped with a circle groove, and the groove is provided with leather cup.
Further, it is additionally provided with that axially parallel strip groove, the rotation limit component with the lead screw on the shell
Including interconnecting piece, support portion and rolled portion, the interconnecting piece is sequentially passed through in the rolled portion, support portion, and is fixed on described
On lead screw, the rolled portion is located in the strip groove.
Further, the interconnecting piece is bolt, and the support portion is nut, and the rolled portion is spin, the spin
Diametrically offer a through-hole.
Due to the adoption of the above technical scheme, the present invention reaches following technical effect:
When automatic driving vehicle normal brake application, which stores energy by the torque compressed spring of motor output；When
Automatic driving vehicle because failure leads to vehicle power-fail, the device motor because can not power can not output torque, compression bullet
The lower meeting extrusion oil cylinder residual brake liquid of return spring force effect of spring, generates brake pressure and realizes braking.The device is as automatic
The alternate brake for driving vehicle realizes the redundancy setting of motor vehicle braking system, makes automatic driving vehicle in vehicle power failure
It obtains under the extreme conditions such as vehicle line traffic control thrashing, is still able to achieve braking function, improves the security performance of automatic driving vehicle.
Detailed description of the invention
Attached drawing 1 is a kind of structural schematic diagram of device that Automobile redundant braking is realized using energy-stored spring.
Attached drawing 2 is the structure enlargement diagram of rotation limitation component.
In attached drawing: 1- motor, 200- transmission component, 201- first gear, 202- second gear, 203- duplicate gear,
203a- gear wheel, 203b- pinion gear, 3- spring, 400- ball-screw apparatus, 401- screw, 402- lead screw, 403- ball, 5-
Piston, 600- rotation limitation component, 601- bolt, the second nut of 602-, 603- spin, 7- first bearing, 8- second bearing, 9-
Oil pocket, 10- fuel feed hole, 11- oil outlet, 12- groove, 13- leather cup, 14- key, 15- shell, 16- sunk screw, 17- support shaft,
The first nut of 18-, 19- strip groove.
Specific embodiment
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the element of indication or suggestion meaning
It must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiments of the present invention will be further described with reference to the accompanying drawing.
Referring to shown in Fig. 1-2, a kind of device for realizing Automobile redundant braking using energy-stored spring, including motor 1, transmission group
Part 200, spring 3, ball-screw apparatus 400, rotation limitation component 600 and piston 5, transmission component 200 include first gear
201, second gear 202 and duplicate gear 203, duplicate gear 203 include an a gear wheel 203a and pinion gear 203b.Electricity
The output shaft of machine 1 couples with the interference fit of first gear 201, and first gear 201 is nibbled with the gear wheel 203a on duplicate gear 203
It closes, the pinion gear 203b on duplicate gear 203 is engaged with second gear 202.Support shaft 17, duplex are fixedly installed in shell 15
Gear 203 is rotatably arranged in support shaft 17, and first bearing 7 is mounted between duplicate gear 203 and support shaft 17.Support shaft 17
To pass through the first nut 18 fixed one end through shell 15.
Ball-screw apparatus 400 includes screw 401, ball 403 and lead screw 402, and lead screw 402 runs through the screw 401, rolling
Between lead screw 402 and screw 401, one end of lead screw 402 couples pearl 403 with piston 5, and rotation limit is also equipped on lead screw 402
Component 600 processed, coupling with second gear 202 for screw 401, is also equipped with key 14 between second gear 202 and screw 401.Screw
401 are mounted on the inside of shell 15 by two second bearings 8.
It is additionally provided on shell 15 and the axial parallel strip groove 19 of lead screw.Rotation limitation component 600 includes interconnecting piece, support
Portion and rolled portion, the interconnecting piece are bolt 601, and the support portion is the second nut 602, and the rolled portion is spin 603, institute
Stating spin 603 diametrically has a through-hole.Bolt 601 is sequentially passed through in spin 603, the second nut 602, and is fixed on lead screw
On 402, spin 603 is located in strip groove 19.Due to the limitation of strip groove, when lead screw 402 axially movable when, drive spin
603 slide along strip groove 19, play the role of limiting the rotation of lead screw 402.
Spring 3 is connected between screw 401 and piston 5.
The torque that motor 1 exports can successively pass through first gear 201, duplicate gear 203, second gear 202, be transferred to rolling
Ballscrew device 400.By ball-screw apparatus 400, the torque of motor 1 can be converted to the pulling force of lead screw 402.Lead screw 402
Upper to limit the rotation of lead screw 402 equipped with rotation limitation component 600, that realizes screw 401 is converted to the flat of lead screw 402
It is dynamic.It is connected between piston 5 and lead screw 402 by sunk screw 16, under the action of 402 pulling force of lead screw, 5 meeting of piston and lead screw
402 together translation move right, to the spring 3 between screw 401 and piston 5 carry out compression storage energy.
The cavity formed between piston 5 and the shell 15 of the device is oil pocket 9, and the top of oil pocket 9 is equipped with through shell
15 fuel feed hole 10, the lower part of oil pocket 9 are equipped with the oil outlet 11 through shell 15.Fuel feed hole 10 passes through oil circuit and master cylinder
(not shown) is connected, and the brake pressure of master cylinder (not shown) can enter the oil pocket 9 in shell 15 through fuel feed hole 10；
Oil outlet 11 is connected by oil circuit with the brake (not shown) of wheel, and the brake fluid of oil pocket 9 can enter through oil outlet 11 to be made
Dynamic device (not shown), realizes vehicle braking.
The middle part of 5 lateral surface of piston is equipped with a circle groove 12, and groove 12 is provided with leather cup 13.Leather cup 13 can be with piston 5 one
It rises and is moved to the left, when leather cup 13 is moved to fuel feed hole 10, make the brake fluid in oil pocket 9 that can not be back to master cylinder (in figure
Do not show), play sealing function.
Working principle: when automatic driving vehicle normal power supply, the motor 1 of the device is for electrically activating, the torsion of the output of motor 1
Square is transferred to ball-screw apparatus 400 by transmission component 200, and lead screw 402 is driven to move right together with piston 5 and leather cup 13
Dynamic, compressed spring 3 stores energy, and the brake fluid that the brake-by-wire of automatic driving vehicle generates at this time can be through the fuel feed hole of the device
10 enter oil pocket 9, by oil outlet 11 to brake (not shown), realize braking.
When the vehicle power supply of automatic driving vehicle, which breaks down, to be powered off or is out of power, the motor 1 of the device loses power supply confession
Electricity, motor 1 can not output torque, the pulling force pop-off on lead screw 402 is acted at this time, in 15 internal compression spring 3 of shell
Returning place force effect under, drive lead screw 402 be moved to the left together with piston 5, leather cup 13, until leather cup 13 blocks fuel feed hole 10 completely
When, the residual brake liquid of oil pocket 9 can not be back to master cylinder (not shown) through fuel feed hole 10 at this time, and compression spring force makes silk
Thick stick 402 continues to be moved to the left together with piston 5, leather cup 13, and the residual brake liquid that piston 5 can squeeze oil pocket 9 generates brake pressure,
Braking can be realized through oil outlet 11 to brake (not shown).
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of device for realizing Automobile redundant braking using energy-stored spring, including motor, ball-screw apparatus and piston, special
Sign is, further includes transmission component, rotation limitation component and spring；
The motor couples with the transmission component, and the transmission component couples with the ball-screw apparatus；
The ball-screw apparatus includes screw, ball and lead screw, and one end of the lead screw is connect with the piston, the lead screw
On be also equipped with rotation limitation component；
The spring is housed between the screw and the piston；
The cavity formed between the piston and the shell of the device is oil pocket, offers on the shell and is connected to oil pocket
Fuel feed hole and oil outlet.
2. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 1, which is characterized in that institute
Stating transmission component includes first gear, second gear and duplicate gear, and the duplicate gear includes a gear wheel and one small
Gear, interference fit couples between the output shaft of the motor and the first gear, the first gear and the duplex-gear
Gear wheel engagement on wheel, the pinion gear on the duplicate gear are engaged with the second gear, the second gear with it is described
The screw of ball-screw apparatus couples.
3. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 2, which is characterized in that institute
It states and is also equipped with key between second gear and the screw.
4. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 2, which is characterized in that institute
The duplicate gear stated is installed inside housings by bearing.
5. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 4, which is characterized in that institute
It states and is fixedly installed with support shaft in shell, the duplicate gear is rotatably arranged in the support shaft, and the bearing is arranged in institute
It states between duplicate gear and the support shaft.
6. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 1, which is characterized in that institute
Lead screw is stated through the screw, the ball is housed between the lead screw and the screw, the screw is fixed on by bearing
The inside of the shell.
7. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 1, which is characterized in that institute
The fuel feed hole stated is connected by oil circuit with master cylinder, and the oil outlet is connected by oil circuit with the brake of wheel.
8. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 1, which is characterized in that institute
The middle part for the piston lateral surface stated is equipped with a circle groove, and the groove is provided with leather cup.
9. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 1, which is characterized in that institute
State be additionally provided on shell with the axial parallel strip groove of the lead screw, the rotation limitation component include interconnecting piece, support portion and
Rolled portion, the interconnecting piece is sequentially passed through in the rolled portion, support portion, and is fixed on the lead screw, the rolling position
In in the strip groove.
10. a kind of device for realizing Automobile redundant braking using energy-stored spring according to claim 9, which is characterized in that
The interconnecting piece is bolt, and the support portion is nut, and the rolled portion is spin, and the spin diametrically offers one
Through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325677.5A CN109941257A (en) | 2019-04-22 | 2019-04-22 | A kind of device for realizing Automobile redundant braking using energy-stored spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325677.5A CN109941257A (en) | 2019-04-22 | 2019-04-22 | A kind of device for realizing Automobile redundant braking using energy-stored spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109941257A true CN109941257A (en) | 2019-06-28 |
Family
ID=67016030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910325677.5A Pending CN109941257A (en) | 2019-04-22 | 2019-04-22 | A kind of device for realizing Automobile redundant braking using energy-stored spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109941257A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111634273A (en) * | 2020-06-28 | 2020-09-08 | 江苏飞梭智行设备有限公司 | Braking device, braking system and vehicle |
| CN111634272A (en) * | 2020-06-28 | 2020-09-08 | 江苏飞梭智行设备有限公司 | Braking device and braking system for vehicle and vehicle |
| CN113734126A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Braking device and vehicle |
| CN115214584A (en) * | 2022-08-25 | 2022-10-21 | 吉林大学 | Braking system for unmanned automobile |
| CN115257673A (en) * | 2022-06-30 | 2022-11-01 | 吉林东光奥威汽车制动系统有限公司 | Transmission structure with speed reducer for electric control booster |
| CN116989109A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Ball screw pressure device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113734126A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Braking device and vehicle |
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