CN103303286B - A kind of brake device for car - Google Patents
A kind of brake device for car Download PDFInfo
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- CN103303286B CN103303286B CN201210066544.9A CN201210066544A CN103303286B CN 103303286 B CN103303286 B CN 103303286B CN 201210066544 A CN201210066544 A CN 201210066544A CN 103303286 B CN103303286 B CN 103303286B
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- 239000012530 fluid Substances 0.000 claims abstract description 166
- 238000001802 infusion Methods 0.000 claims abstract description 80
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 230000006978 adaptation Effects 0.000 claims description 95
- 238000009825 accumulation Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 28
- 230000000694 effects Effects 0.000 description 14
- 238000004146 energy storage Methods 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a kind of brake device for car, it is desirable to provide one can not only realize brake-by-wire；On-line Control is moved when breaking down, additionally it is possible to realize conventional hydraulic braking；Also have that braking distance is little, the brake unit of the little feature that takes up room simultaneously.It includes brake fluid reservoir, master cylinder, brake pedal, displacement transducer；The piston both sides of master cylinder are provided with working chamber and fluid infusion chamber, are provided with the first back-moving spring in working chamber；The long-pending A of the piston cross-section contacted with working chamber on master cylinder is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber；Brake pedal is provided with the pedal rod relative with the piston rod of described master cylinder, is provided with gap or separable is resisted against on the piston rod end face relative with pedal rod between the piston rod end face that the end of described pedal rod is relative with pedal rod.
Description
Technical field
The present invention relates to a kind of brake device for car, be specifically related to a kind of brake device for car collectively formed by Electronic Control and hydraulic system.
Background technology
Along with the development of electron controls technology, the brakes of automobile also applies electron controls technology gradually, to realize brake-by-wire.For pure line control brake system, namely connect with electric wire, electric wire transmission energy, data wire transmission signal, carry out direct controlled wheel brake and realize braking.The brake operatings such as braking maneuver part and wheel drag such as pedal are partially separated and come by this pure line control brake system, and the unjoyful vibration of making us produced in braking procedure is not transferred on brake pedal；But its weak point having, is namely break down whole brakes with regard to paralysis once Electronic Control.
Further, in order to avoid the weak point of pure line control brake system, hydraulic braking and two kinds of brakes of deceleration of electrons are applied simultaneously with in brake system of car；When deceleration of electrons controls to break down, it is also possible to realized braking by brake fluid system.This brakes, had both applied traditional brake fluid system to ensure enough braking safeties, had utilized again deceleration of electrons advantage；But owing to two set brakes exist simultaneously, structure is complicated, high expensive, too increases care and maintenance difficulty.On the other hand, in this kind of brakes hydraulic braking and deceleration of electrons combined, in order to reach the effect of an emergent hydraulic braking, an energy storage equipment can be generally also separately provided；But it takes up room greatly, occupy automobile further originally with regard to limited space.
Further, such as, China Patent Publication No. CN1820989, publication date on 08 23rd, 2006, the name that utility model is created is called electronically controlled hydraulic brake system, this application case discloses a kind of electronically controlled hydraulic brake system, and it can be implemented in brake-by-wire when breaking down, additionally it is possible to realizes braking by conventional hydraulic brakes.But the restriction due to conventional hydraulic brakes and brake master cylinder structure thereof；During in order to realize that On-line Control is dynamic to break down, additionally it is possible to realize conventional hydraulic braking；As disclosed in above-mentioned application case, need to add the hydraulic circuit of the brake-by-wire being connected wheel drag by brake fluid reservoir in conventional hydraulic brakes, and pump is arranged on the hydraulic circuit set up, the shift motion of brake pedal is detected by stroke sensor；And pass to electronic-controlled installation for controlling hydraulic control device to realize brake-by-wire.This kind of brakes has following deficiency: one, conventional hydraulic braking it is capable of in order to On-line Control is dynamic when breaking down, the program will be directly linked together by connecting rod between brake pedal and master cylinder or booster so that the pedal force of driver can be delivered on master cylinder or booster by connecting rod thus realizing braking；But that so just cannot avoid makes what produce in braking procedure to make us unjoyful vibration and can be delivered on brake pedal, this problem be also existing this kind of conventional hydraulic brakes with brake-by-wire in conjunction with time, the problem never obtaining solution.Because in order to make strength of one's legs be delivered on master cylinder or booster reliably in conventional pressure brakes, then needing to be directly linked together by connecting rod or other structures between brake pedal and master cylinder or booster.They are two years old, in order to realize brake-by-wire in conventional hydraulic brakes, common design is identical with this programme, namely adds the hydraulic circuit of a brake-by-wire being connected wheel drag by brake fluid reservoir on conventional hydraulic braked channel, and is arranged on the hydraulic circuit set up by pump；But owing to being additionally arranged the hydraulic circuit of a brake-by-wire so that the pipeline of hydraulic brake circuit increases, this not only can increase cost, increase maintenance difficulties；The more important thing is owing to pipeline growth can make braking retardation, increase braking distance, reduce safety.
Summary of the invention
The first object of the present invention be in order to overcome this kind of conventional hydraulic brakes and brake-by-wire in conjunction with time, conventional hydraulic braking it is capable of in order to On-line Control is dynamic when breaking down, and brake pedal and master cylinder or booster are linked together by connecting rod or other structures, make what braking procedure produced to make us unjoyful vibration and can be delivered to the problem on brake pedal, there is provided one can not only realize brake-by-wire, On-line Control is moved when breaking down, conventional hydraulic braking can also be realized, and what produce in the dynamic process of On-line Control makes us the brake device for car that unjoyful vibration is not transferred on brake pedal.
The second object of the present invention be in order to overcome this kind of by brake-by-wire structure set up in conventional hydraulic brakes, owing to adding the hydraulic circuit of brake-by-wire, the pipeline making hydraulic brake circuit increases, not only increase cost, also increasing braking distance, the problem reducing safety, it is provided that one can not only realize brake-by-wire, On-line Control is moved when breaking down, conventional hydraulic braking and the brake device for car that production cost is low, braking distance is little, safety is high can also be realized.
The third object of the present invention is this kind of hydraulic braking and deceleration of electrons to be combined to overcome, the energy storage equipment arranged to reach the effect of an emergent hydraulic braking, the problem that it takes up room greatly, cost of manufacture is high, thering is provided a kind of realization to be combined as a whole thus reducing the space that brakes takies by energy storage equipment and master cylinder, reducing cost；And On-line Control is moved when breaking down, additionally it is possible to realize the brake device for car of conventional hydraulic braking.
The technical scheme is that
A kind of brake device for car includes: brake fluid reservoir, it is used for storing brake fluid；Master cylinder, its piston both sides are provided with working chamber and fluid infusion chamber, are provided with the first back-moving spring in working chamber；The long-pending A of the piston cross-section contacted with working chamber on master cylinder is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber；Brake pedal, which is provided with the pedal rod relative with the piston rod of described master cylinder, is provided with gap or separable is resisted against on piston rod end face between end and the piston rod end face of described pedal rod；Hydraulic control device, it has pump and connects the first braked channel of described working chamber and wheel drag, and described pump flows to described working chamber and fluid infusion chamber for aspirating the brake fluid in brake pipe；Displacement transducer, it is for detecting the stroke of brake pedal；Electronic control unit, it controls described hydraulic control device based on the displacement signal of institute's displacement sensors.This programme detects the action of brake pedal by displacement transducer and passes the signal along to electronic control unit, and electronic control unit controls driven by motor pump and sets up the brake pressure adapted to, thus realizing brake-by-wire.In the process that On-line Control is dynamic, owing to pump flows to described working chamber and fluid infusion chamber for aspirating the brake fluid in brake pipe, therefore working chamber is identical with the pressure in fluid infusion chamber, and the long-pending A of the piston cross-section contacted with working chamber is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber；This allows in the process that On-line Control is dynamic, working chamber to the pressure of the piston of master cylinder by less than the fluid infusion chamber pressure to the piston of master cylinder, so that the piston of master cylinder actively moves toward working chamber so that the spacing between piston rod and the pedal rod of master cylinder becomes larger；Therefore in the process that On-line Control is dynamic, the brake operating part such as brake pedal and wheel drag will not contact, and in the dynamic process of such On-line Control, the unjoyful vibration of making us of generation is not transmitted on brake pedal.On-line Control is moved when breaking down, and the braking of effect working chamber with fluid infusion chamber owing to not having pump is pressed only small close to zero；Now the piston of master cylinder can reset under the effect of back-moving spring, the position between the piston rod of master cylinder and pedal rod is made to return to original state, pedal force can be delivered on wheel drag by master cylinder by brake pedal by driver, it is achieved conventional hydraulic is braked.On the other hand, the brakes of this programme is controlled by an electronic control unit pump provides pressure source to directly act on master cylinder, by traditional master cylinder and the pressure regulating unit Integration Design being made up of motor and pump, improve system modular degree, reduce cost, save the arrangement space of car inside brake system.
As preferably, the piston rod of master cylinder is positioned at side, fluid infusion chamber, and the piston side relative with working chamber is provided with a guide rod coaxial with piston rod, and guide rod runs through the cylinder body of master cylinder and is provided with sealing ring between guide rod and cylinder body；Described guide rod cross-sectional area is more than piston rod cross-sectional area.Owing to the piston side of master cylinder is provided with piston rod, opposite side is provided with guide rod；And guide rod cross-sectional area is more than piston rod cross-sectional area；Make the long-pending A of the piston cross-section contacted with working chamber by less than the long-pending B of the piston cross-section contacted with fluid infusion chamber；In the dynamic process of On-line Control, the brake operating part such as brake pedal and wheel drag will not contact, and therefore the unjoyful vibration of making us of braking procedure generation is not transferred on brake pedal.Program structure is possible not only to realize being partially separated by the brake operatings such as braking maneuver part and wheel drag such as brake pedal in pure line control brake system coming, it is also possible to realizes conventional hydraulic braking and the brake operating parts such as brake pedal and wheel drag is directly linked together.
As preferably, the end face of the cylinder body of master cylinder is provided with a shoulder hole, and the bore being provided with two stage rank and shoulder hole in shoulder hole is gradually reduced inside by opening, and shoulder hole open end is provided with end cover；The piston of master cylinder is located in the shoulder hole between two stage rank, and described working chamber is located between piston and shoulder hole bottom surface, and described fluid infusion chamber is located between piston and end cover；Master cylinder body between described end cover with adjacent step is provided with the first fluid infusion hole connected with fluid infusion chamber, and the cylinder body of the master cylinder between described shoulder hole bottom surface and adjacent step is provided with the first inlet opening and the first liquid outlet that connect with working chamber.It is located at shoulder hole bottom surface due to the first inlet opening and the first liquid outlet to be adjacent on the cylinder body between step, and the piston of master cylinder is located in the shoulder hole between two stage rank, can avoid because of the braking of working chamber Yu fluid infusion chamber press through big time, the piston of master cylinder is by clogging to the first inlet opening and the first liquid outlet.Additionally, it is adjacent on the cylinder body between step owing to the first fluid infusion hole is arranged on end cover, the bore of the shoulder hole in the first place, fluid infusion hole is maximum, the piston that so can avoid master cylinder blocks the first fluid infusion hole when resetting under action of reset spring, it is possible to reduce the requirement making precision.
As preferably, piston rod end face is provided with hemispheric groove, and the end of pedal rod is provided with spherical projection, and described projection is positioned at groove.On-line Control is moved when breaking down, can ensure that in the process that driver tramples brake pedal by this programme structure, pedal rod can keep good contacting with the piston rod of master cylinder, is delivered on wheel drag by pedal force by working chamber, it is achieved conventional hydraulic is braked.
As preferably, the 3rd braked channel it is provided with between brake fluid reservoir and master cylinder, 3rd braked channel includes the 3rd overall channel with brake fluid reservoir connection and the 3rd bypass passage being connected respectively at working chamber and fluid infusion chamber, described pump is located on the 3rd overall channel, and the 3rd bypass passage being connected on described 3rd overall channel and with working chamber is provided with the second check valve and the 3rd check valve that brake fluid can be flowed to working chamber by brake fluid reservoir.Pump is located between brake fluid reservoir and master cylinder, and pump connects working chamber and the fluid infusion chamber of master cylinder respectively by the 3rd braked channel；In the dynamic process of such On-line Control, the piston pressure applied of master cylinder can be reached a balance by pump, and what therefore do not interfere with brake pedal in the dynamic process of On-line Control tramples effect.Importantly, due to pump is located between brake fluid reservoir and master cylinder, so there is no need to increase the hydraulic circuit of brake-by-wire, it is possible to greatly shorten the length of pipe of the hydraulic circuit of brake-by-wire, reduce braking distance, improve brake safe performance.On the other hand, the second check valve is possible to prevent the fluid of working chamber and fluid infusion intracavity to be back in pump.3rd check valve is possible to prevent the fluid in working chamber by the 3rd bypass passage stream to fluid infusion chamber or pump.
As preferably, one the 4th braked channel connects fluid infusion chamber and brake fluid reservoir, and the 4th braked channel is provided with the 3rd electromagnetic switch valve of open type.On-line Control is moved when breaking down, by the 3rd electromagnetic switch valve of open type, fluid infusion chamber can be connected by the 4th braked channel with brake fluid reservoir so that the pedal force of driver can better be delivered on wheel drag by working chamber, it is achieved conventional hydraulic is braked.
As preferably, one the 6th braked channel, it connects brake fluid reservoir and fluid infusion chamber, and described 6th braked channel is provided with the first check valve that a brake fluid can be flowed to fluid infusion chamber by brake fluid reservoir.At electronic control unit normal operation, and when motor or pump break down, it is possible to coordinated by the 6th braked channel and the first check valve and realize conventional hydraulic braking.
As preferably, brake pedal is provided with tramples simulator, and it is for applying the counteracting force corresponding to brake pedal shift motion to described brake pedal.Trample simulator owing to being provided with, the dynamic process of On-line Control can provide one to be similar to and trample effect really.
As preferably, working chamber is provided with pressure transducer；First braked channel is provided with the 4th electromagnetic switch valve for controlling the first braked channel break-make；One end of described master cylinder is provided with accumulation of energy chamber and accumulation of energy chamber and is connected with working chamber, and accumulation of energy intracavity is provided with piston and energy-storaging spring.It is connected with working chamber owing to the end of master cylinder is provided with accumulation of energy chamber and accumulation of energy chamber, by electronic control unit, the 3rd electromagnetic switch valve and the 4th electromagnetic switch valve is closed when accumulation of energy, then pass through pump and working chamber and fluid infusion chamber are pressurizeed, and then carry out accumulation of energy.Can realize being combined as a whole thus reducing the space that brakes takies energy storage equipment and master cylinder by this programme structure.
As preferably, the 4th electromagnetic switch valve is normally closed open form electromagnetic switch valve；One self adaptation on-off system is connected on the first braked channel with connected mode in parallel by the 7th braked channel and the 4th electromagnetic switch valve；Described self adaptation on-off system includes a self adaptation cylinder body, the internal cavity of self adaptation cylinder body is the stepped cavity of narrowing toward each end broad in the middle, it is provided with the first self adaptation piston and the second self adaptation piston with one end in the middle part of stepped cavity, and the sectional area of the first self adaptation piston is more than the sectional area with the second self adaptation piston；It is connected by a connecting rod between first self adaptation piston and the second self adaptation piston；Between the stepped cavity end that the first self adaptation piston closes corresponding thereto, it is provided with the 3rd back-moving spring in described stepped cavity；Being provided with the second inlet opening between the first self adaptation piston and the second self adaptation piston in the middle part of described self adaptation cylinder body, the self adaptation cylinder body side being positioned at same one end with the second self adaptation piston is provided with the second liquid outlet；Axial spacing between second inlet opening and the second liquid outlet is less than the spacing between the first self adaptation piston and the second self adaptation piston；7th braked channel includes path and underpass, and upper path connects the first braked channel and the second inlet opening, and underpass connects the second liquid outlet and the first braked channel.4th electromagnetic switch valve is normally closed open form electromagnetic switch valve by this programme, and when being be out of order in order to avoid On-line Control is dynamic, the hydraulic oil in accumulation of energy chamber will not be applied on wheel drag by the first braked channel and produce braking by mistake.Although being normally closed open form electromagnetic switch valve by the 4th electromagnetic switch valve, but by the setting of this programme can be implemented in brake-by-wire break down time, additionally it is possible to realize conventional hydraulic braking.Due to the setting of self adaptation on-off system, when line control brake system normal operation, when energy storage equipment is in energy accumulating state in closing the 7th braked channel, to realize accumulation of energy；When line control brake system is out of order, it is possible to certainly open the 7th braked channel, to realize conventional hydraulic braking.
The invention has the beneficial effects as follows:
1. what produce in the dynamic process of On-line Control makes us the integrated line control brake system of automobile that unjoyful vibration is not transferred on brake pedal.
2. the pressure source that motor and pump provide is directly acted on master cylinder, it is achieved traditional master cylinder and pressure regulating unit Integration Design, improve system modular degree.
3. eliminate the vacuum booster in conventional hydraulic, reduce cost, reduce installing space.
4. can not only realizing brake-by-wire, On-line Control is moved when breaking down, additionally it is possible to realize conventional hydraulic braking, and production cost is low, braking distance is little, braking safety is high.
5. can realizing being combined as a whole energy storage equipment and master cylinder, thus reducing the space that brakes takies, reducing production cost；When On-line Control is moved and is broken down simultaneously, additionally it is possible to realize conventional hydraulic braking.
Accompanying drawing explanation
Fig. 1 is a kind of operation principle schematic diagram of the embodiment of the present invention 1.
Fig. 2 is a kind of structural representation of the master cylinder in the embodiment of the present invention 1.
Fig. 3 is a kind of operation principle schematic diagram of the embodiment of the present invention 2.
Fig. 4 is a kind of operation principle schematic diagram of the embodiment of the present invention 3.
Fig. 5 is a kind of structural representation of the master cylinder in the embodiment of the present invention 3.
Fig. 6 is the self adaptation on-off system conducting state one structural representation of the embodiment of the present invention 3.
Fig. 7 is the self adaptation on-off system closed mode one structural representation of the embodiment of the present invention 3.
Fig. 8 is a kind of operation principle schematic diagram of the embodiment of the present invention 4.
Fig. 9 is a kind of structural representation of the embodiment of the present invention 5.
nullIn figure: master cylinder 1、Brake pedal 2、Working chamber 3、Fluid infusion chamber 4、First back-moving spring 5、Guide rod 6、First fluid infusion hole 7、Pedal rod 8、Displacement transducer 9、Brake fluid reservoir 10、Pump 11、Motor 12、3rd braked channel 13、Second check valve 14、3rd check valve 15、4th braked channel 16、3rd electromagnetic switch valve 17、Pressure transducer 18、Trample simulator 19、5th braked channel 20、Second cavity 21、First cavity 22、Second back-moving spring 23、First braked channel 24、Second braked channel 25、Electronic control unit 26、Second electromagnetic switch valve 27、First electromagnetic switch valve 28、Wheel drag 29、Velometer 30、First inlet opening 31、First liquid outlet 32、End cover 33、Dust cover 34、Groove 35、Protruding 36、6th braked channel 37、First check valve 38、Accumulation of energy chamber 39、Pressure limiting valve 40、Four electromagnetic switch valves 41、Self adaptation on-off system 42、7th braked channel 43、Stepped cavity 44、Connecting rod 45、3rd back-moving spring 46、Second inlet opening 47、Second liquid outlet 48、Self adaptation cylinder body 49、Water conservancy diversion through hole 50、Energy-storaging spring 51、First self adaptation piston 52、Second self adaptation piston 53、Stopping means 54、Stepped hole 55.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
Embodiment 1: as it is shown in figure 1, a kind of brake device for car, including hydraulic control device, electronic control unit 26, brake fluid reservoir 10, motor 12, pump 11, master cylinder 1, brake pedal 2, wheel drag 29 and for detecting the velometer 30 of vehicle wheel rotational speed.Hydraulic control device includes the braked channel of connecting components in motor, pump and brake device for car.
The piston both sides of master cylinder 1 are provided with working chamber 3 and fluid infusion chamber 4.One first braked channel 24 connects master cylinder 1 and wheel drag 29.First braked channel 24 includes the first overall channel being connected with working chamber 3 and the first bypass passage being connected respectively with each wheel drag 29；Each first bypass passage is respectively equipped with one first electromagnetic switch valve 28, and the first electromagnetic switch valve is open type electromagnetic switch valve.
One second braked channel 25 connects wheel drag 29 and brake fluid reservoir 10, and fluid is back in brake fluid reservoir after terminating for brake by it.Second braked channel 25 includes the second overall channel being connected with brake fluid reservoir 10 and the second bypass passage being connected respectively with each wheel drag 29；Each second bypass passage is respectively equipped with one second electromagnetic switch valve 27, and the second electromagnetic switch valve is closed type electromagnetic switch valve.
One the 3rd braked channel 13 connects brake fluid reservoir 10 and master cylinder.3rd braked channel 13 includes the 3rd overall channel with brake fluid reservoir 10 connection and the 3rd bypass passage being connected respectively at working chamber 3 and fluid infusion chamber 4.Described pump 11 is located on the 3rd overall channel.The 3rd bypass passage being connected on described 3rd overall channel and with working chamber is provided with the second check valve 14 and the 3rd check valve 15 that brake fluid can be flowed to working chamber by brake fluid reservoir.Pump flows to described working chamber 3 and fluid infusion chamber 4 for the brake fluid aspirated in brake pipe.Owing to pump 22 is located between brake fluid reservoir and master cylinder, so there is no need to increase the hydraulic circuit of brake-by-wire, it is possible to greatly shorten the length of pipe of the hydraulic circuit of brake-by-wire, reduce braking distance.On the other hand, the pressure source that motor and pump provide is directly acted on master cylinder, it is achieved traditional master cylinder and the pressure regulating unit Integration Design being made up of motor and pump, improve system modular degree；Cost can be reduced, save the arrangement space of car inside brake system.
One the 4th braked channel 16 connects fluid infusion chamber 4 and brake fluid reservoir 10, and the 4th braked channel 16 is provided with the 3rd electromagnetic switch valve 17 and the 3rd electromagnetic switch valve is open type electromagnetic switch valve.On-line Control is moved when breaking down, by the 3rd electromagnetic switch valve of open type, fluid infusion chamber can be connected by the 4th braked channel with brake fluid reservoir so that the pedal force of driver can better be delivered on wheel drag by working chamber, it is achieved conventional hydraulic is braked.
The piston both sides of master cylinder 1 are provided with working chamber 3 and fluid infusion chamber 4.It is provided with the first back-moving spring 5 in working chamber, working chamber also has the pressure transducer 18 for detecting working chamber pressure.On master cylinder 1, the long-pending A of the piston cross-section of working chamber 3 contact is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber 4.Described brake pedal 2 is provided with the pedal rod 8 relative with the piston rod of master cylinder 1, is provided with gap between end and the piston rod end face of master cylinder 1 of described pedal rod 8.The end of above-mentioned pedal rod 8 can also directly separable be resisted against with on the piston rod end face of master cylinder 1.Specifically, the piston rod end face of master cylinder 1 is provided with hemispheric groove 35, and the end of pedal rod 8 is provided with spherical projection 36, and described projection is positioned at groove.
Pedal rod 8 is hinged on brake pedal 2.Pedal rod 8 is provided with a stopping means 54.Stopping means 54 can be provided with gap between pilot hole and the pedal rod 8 being arranged on horizontally-guided set that horizontal guide slot that horizontal supporting plate below pedal rod 8 or arranges along pedal rod 8 or arranges along pedal rod 8 and fairlead.The purpose that stopping means 54 is arranged is: after the piston rod of pedal rod 8 with master cylinder 1 separates, and produces to rotate under the effect that pedal rod 8 will not be conducted oneself with dignity again；When driver discharges brake pedal, after brake pedal resets, pedal rod 8 can reset to initial level under the effect of stopping means, keeps the position relationship between pedal rod 8 and the piston rod end face of master cylinder 1.
In the process that On-line Control is dynamic, connecting working chamber and fluid infusion chamber due to pump, therefore in pump work process, working chamber is identical with the pressure in fluid infusion chamber, and the piston cross-section contacted with working chamber is long-pending long-pending less than the piston cross-section contacted with fluid infusion chamber；This allows in the process that On-line Control is dynamic, working chamber to the pressure of the piston of master cylinder by less than the fluid infusion chamber pressure to the piston of master cylinder, so that the piston of master cylinder actively moves toward working chamber so that the spacing between piston rod and the pedal rod of master cylinder becomes larger；Therefore in the process that On-line Control is dynamic, the brake operating part such as brake pedal and wheel drag will not contact, and in the dynamic process of such On-line Control, the unjoyful vibration of making us of generation is not transmitted on brake pedal.And when pump quits work, the piston of master cylinder can reset under the effect of back-moving spring so that the position between piston rod and the pedal rod of master cylinder returns to original state.
As in figure 2 it is shown, the end face of the cylinder body of master cylinder 1 is provided with a shoulder hole, the bore being provided with two stage rank and shoulder hole in shoulder hole is gradually reduced inside by opening.Shoulder hole open end is provided with end cover 33.Master cylinder 1 is positioned at shoulder hole open end and is additionally provided with dust cover 34.The piston of master cylinder 1 is located in the shoulder hole between two stage rank.Described working chamber 3 is located between piston and shoulder hole bottom surface, and described fluid infusion chamber 4 is located between piston and end cover 33.The piston rod of master cylinder 1 is positioned at side, fluid infusion chamber 4, and the piston side relative with working chamber 3 is provided with a guide rod 6 coaxial with piston rod.Guide rod 6 runs through the cylinder body of master cylinder and is provided with sealing ring between guide rod and cylinder body.Guide rod 6 cross-sectional area is more than the piston rod cross-sectional area of master cylinder so that the long-pending A of the piston cross-section contacted with working chamber 3 is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber 4.Cylinder body between end cover 33 with adjacent step is provided with the first fluid infusion hole 7 connected with fluid infusion chamber 4.Cylinder body between shoulder hole bottom surface with adjacent step is provided with the first inlet opening 31 and the first liquid outlet 32 connected with working chamber 3.The first above-mentioned braked channel 24 is connected wheel drag 29 by the first liquid outlet 32.Above-mentioned 3rd braked channel 13 is connected the first fluid infusion hole 7 and the first inlet opening 31 respectively by brake fluid reservoir 10.
Brake pedal 2 is provided with tramples simulator 19, and it is for applying the counteracting force corresponding to brake pedal shift motion to described brake pedal.Brake pedal 2 is provided with displacement transducer 9, and it is for detecting the stroke of brake pedal 2.Electronic control unit 26 controls described hydraulic control device based on the displacement signal of institute's displacement sensors.
The displacement signal of displacement transducer 9, the pressure signal of pressure transducer 18, velometer 30 wheel speed signal connect to electronic control unit 26 respectively through data line transfer；The signal received is processed and motor 12 and each electromagnetic switch valve is controlled by electronic control unit, thus realizing brake-by-wire.When electronic control unit 26 detects the positive displacement signal of displacement transducer 9, namely illustrate that driver tramples brake pedal 2；Now the 3rd electromagnetic switch valve 17 on the 4th braked channel 16 is closed by electronic control unit 26；Controlling motor 12 to work, driven by motor pump sets up, in working chamber 3 and the fluid infusion chamber 4 of master cylinder 1, the brake pressure adapted to, then is delivered on wheel drag 29 by the first braked channel 24 and realizes braking simultaneously.The meeting of the pressure transducer 18 in the working chamber 3 of master cylinder 1 real-time perception brake pressure size in braking procedure, if reaching preset value, motor stop motion.Simultaneously, as shown in Figure 1, in the dynamic process of On-line Control, utilize under working chamber and the uniform pressure effect of fluid infusion chamber, different from the active area of working chamber and fluid infusion chamber by the piston of master cylinder, produce driving force difference so that the piston rod of master cylinder is to left movement, make the piston rod connecting rod of master cylinder separate with pedal rod.Therefore the unjoyful vibration of making us produced in the dynamic process of On-line Control is not transferred on brake pedal.
After driver discharges brake-apply 2 completely, now electronic control unit control motor 12 quits work, open the second electromagnetic switch valve 27 on the second braked channel 25 and the 3rd electromagnetic switch valve 17 on the 4th braked channel 16 simultaneously, make brake fluid be refluxed back brake fluid reservoir by the second braked channel 25；Also make master cylinder 1 reset under the effect of the first back-moving spring 5 simultaneously.
When driver's brake hard, wheel speed signal that electronic control unit 26 detects in conjunction with velometer 30 and the displacement signal of displacement transducer 9, set up, by the driven by motor pump working chamber 3 at master cylinder 1 and fluid infusion chamber 4, the brake pressure adapted to；If velometer 30 detects certain wheel lock up in this process, owing to the braked channel of each wheel drag is separate, therefore the second electromagnetic switch valve 27 on the second bypass passage of corresponding second braked channel 25 can be opened, lower brake pressure, solve the situation of wheel lock up, to ensure that each wheel makes full use of traction.
When electronic control unit 26 breaks down and do not work, the piston of master cylinder 1 can reset under the effect of the first back-moving spring 5.Owing to three electromagnetic switch valves 17 on the 4th braked channel 16 are open type electromagnetic switch valve, the brake fluid of fluid infusion intracavity can be supplemented；Simultaneously because the first electromagnetic switch valve 28 on the first braked channel 24 is open type electromagnetic switch valve, and the second electromagnetic switch valve 27 on the second braked channel 25 is closed type electromagnetic switch valve；When driver tramples brake pedal 2, brake force can be delivered on wheel drag 29 by the first braked channel 24 by working chamber and realize conventional hydraulic braking.When driver has loosened the brake after 2, the piston of master cylinder 1 can reset under the effect of the first back-moving spring 5.
Embodiment 2: as it is shown on figure 3, be provided with one the 6th braked channel 37 between brake fluid reservoir 10 and master cylinder 1, it connects brake fluid reservoir 10 and fluid infusion chamber 4.6th braked channel 37 is provided with the first check valve 38 that a brake fluid can be flowed to fluid infusion chamber by brake fluid reservoir.All the other structures of the present embodiment are with reference to embodiment 1.
When On-line Control moves system failure, refer specifically at electronic control unit 26 normal operation, and when motor 12 or pump 11 break down, then can be coordinated by the 6th braked channel 37 and the first check valve 38 and realize conventional hydraulic braking；Without influence on brake-by-wire simultaneously when the dynamic system of On-line Control is working properly.Owing to the circulating direction of the first check valve 38 is flowed to fluid infusion chamber by brake fluid reservoir, in the dynamic process of On-line Control, the brake fluid in fluid infusion chamber 4 will not be back in brake fluid reservoir by the 6th braked channel 37, thus without affecting brake-by-wire.And at electronic control unit 26 normal operation, and when motor 12 or pump 11 break down；When electronic control unit 26 detects the positive displacement signal of displacement transducer 9, the 3rd electromagnetic switch valve 17 on the 4th braked channel 16 can be closed；If without the 6th braked channel 37, the brake fluid in fluid infusion chamber 4 can not get supplementing, and therefore cannot the strength of one's legs of driver be delivered on wheel drag 29.
Embodiment 3: as shown in Figure 4, Figure 5, the first braked channel 24 is provided with the 4th electromagnetic switch valve 41 for controlling the first braked channel 24 break-make.Specifically, the first overall channel of the first braked channel 24 is provided with the 4th electromagnetic switch valve 41, and the 4th electromagnetic switch valve is normally closed open form electromagnetic switch valve.The 3rd electromagnetic switch valve 17 arranged on 4th braked channel 16 is open type electromagnetic switch valve.Being provided with one the 6th braked channel 37 between brake fluid reservoir 10 and master cylinder 1, it connects brake fluid reservoir 10 and fluid infusion chamber 4.6th braked channel 37 is provided with the first check valve 38 that a brake fluid can be flowed to fluid infusion chamber by brake fluid reservoir.One end of master cylinder 1 is provided with accumulation of energy chamber 39 and accumulation of energy chamber and is connected with working chamber 3.Piston and energy-storaging spring 51 it is provided with in accumulation of energy chamber 39.It is connected by some water conservancy diversion through holes 50 between accumulation of energy chamber 39 with working chamber 3.The guide rod being arranged on the piston of master cylinder is positioned at outside master cylinder through working chamber 3 and accumulation of energy chamber 39, is provided with sealing ring between guide rod and the cylinder body of master cylinder.Spacing L between first fluid infusion hole 7 and end cover 33 inner face of master cylinder is more than the piston thickness of master cylinder.
4th electromagnetic switch valve 41 is set to normally closed open form electromagnetic switch valve, is in order to avoid being under energy accumulating state in accumulation of energy chamber 39, occur that deceleration of electrons unit is out of order and do not work, and the mistake braking produced.If because the 4th electromagnetic switch valve 41 is set to normally opened open form electromagnetic switch valve, being under energy accumulating state in accumulation of energy chamber 39, occur that deceleration of electrons unit is out of order when not working, the mistake braking that can be sent on wheel drag to produce energy-storage pressure.
It is open type electromagnetic switch valve by the 3rd electromagnetic switch valve 17 of setting on the 4th braked channel 16, and the spacing L between the first fluid infusion hole 7 of master cylinder and end cover 33 inner face is more than the piston thickness of master cylinder；It is to realize being under energy accumulating state in accumulation of energy chamber 39, appearance deceleration of electrons unit is out of order when not working, brake fluid in fluid infusion chamber 4 can pass through the 4th braked channel 16 and be back in brake fluid reservoir, simultaneously because spacing L between the first fluid infusion hole 7 and end cover 33 inner face is more than the piston thickness of master cylinder, accumulation of energy chamber 39 can also be back in brake fluid reservoir by the 4th braked channel 16 by the first fluid infusion hole 7 with the brake fluid in working chamber 3, eliminating accumulation of energy pressure makes self adaptation on-off system 42 in the conduction state, to turn on the 7th braked channel 43.
It is located between brake fluid reservoir 10 with master cylinder 1 and connected working chamber 3 and fluid infusion chamber 4 due to pump 11；Therefore accumulation of energy chamber 39 is set in one end of master cylinder 1, and accumulation of energy chamber 39 is connected with working chamber 3, realize being combined as a whole energy storage equipment and master cylinder with this, and then reduce the space that brakes takies.
As shown in Figure 4, a self adaptation on-off system 42 is connected on the first overall channel of the first braked channel 24 with connected mode in parallel with the 4th electromagnetic switch valve 41 by the 7th braked channel 43.As shown in Figure 6, self adaptation on-off system 42 includes a self adaptation cylinder body 49, and the internal cavity of self adaptation cylinder body is the stepped cavity 44 of narrowing toward each end broad in the middle.It is provided with the first self adaptation piston 52 and the second self adaptation piston 53 with one end in the middle part of stepped cavity, and the sectional area of the first self adaptation piston is more than the sectional area with the second self adaptation piston.It is connected by a connecting rod 45 between first self adaptation piston and the second self adaptation piston.Between the first self adaptation piston 52 and stepped cavity end corresponding thereto, it is provided with the 3rd back-moving spring 46 in described stepped cavity 44.Between the first self adaptation piston and the second self adaptation piston, the second inlet opening 47 it is provided with in the middle part of described self adaptation cylinder body；The self adaptation cylinder body side being positioned at same one end with the second self adaptation piston is provided with the second liquid outlet 48.Axial spacing between second inlet opening 47 and the second liquid outlet 48 is less than the spacing between the first self adaptation piston and the second self adaptation piston.7th braked channel 43 includes path and underpass, and upper path connects the first overall channel and second inlet opening 47 of the first braked channel 24, and underpass connects the first overall channel of the second liquid outlet 48 and the first braked channel 24.All the other structures of the present embodiment are with reference to embodiment 1.
Above-mentioned self adaptation on-off system 42 On-line Control has two states when moving system worked well: one, in accumulation of energy chamber 39 energy-storage pressure less than or equal to capping value 30%, self adaptation on-off system 42 is by the conduction state, namely the second inlet opening 47 and the second liquid outlet 48 are all located between the first self adaptation piston 52 and the second self adaptation piston 53, as shown in Figure 6.Because in this condition, the brake fluid in self adaptation cylinder body 49 to the thrust to the right of the second self adaptation piston and the 3rd back-moving spring reset force sum to the right more than the brake fluid in self adaptation cylinder body 49 to the first self adaptation piston thrust to the left.
They are two years old, in accumulation of energy chamber 39 energy-storage pressure more than capping value 30%, self adaptation on-off system 42 will be closed, namely the second inlet opening 47 is between the first self adaptation piston 52 and the second self adaptation piston 53, and the second liquid outlet 48 is positioned at outside the first self adaptation piston 52 and the second self adaptation piston 53, as shown in Figure 7.Because in this condition, the brake fluid in self adaptation cylinder body 49 to the thrust to the right of the second self adaptation piston and the 3rd back-moving spring reset force sum to the right less than the brake fluid in self adaptation cylinder body 49 to the first self adaptation piston thrust to the left.
Above-mentioned self adaptation on-off system 42 On-line Control dynamic system malfunctions is only a kind of state when not working: self adaptation on-off system 42 is by the conduction state, namely the second inlet opening 47 and the second liquid outlet 48 are all located between the first self adaptation piston 52 and the second self adaptation piston 53, as shown in Figure 6.During because being provided brake pressure by the pedal force of driver, the brake fluid in self adaptation cylinder body 49 to the thrust to the right of the second self adaptation piston and the 3rd back-moving spring reset force sum to the right more than the brake fluid in self adaptation cylinder body 49 to the first self adaptation piston thrust to the left.
The setting of self adaptation on-off system 42, when being be out of order in order to On-line Control is dynamic, when 4th electromagnetic switch valve 41 can not turn on brake fluid, brake fluid can pass through self adaptation on-off system 42 and realize by working chamber 3, brake fluid is conducting to wheel drag, to realize conventional hydraulic braking.
As shown in Figure 4, the detailed process of accumulation of energy is as follows, before electronic control unit 26 is not detected by the displacement signal of displacement transducer 9, namely driver is when not brake, and electronic control unit 26 can control the 3rd electromagnetic switch valve 17 and the first electromagnetic switch valve 28 is closed.It is then turned on motor 12 and by pump 11, is pressurizeed in working chamber 3 and fluid infusion chamber, with this in accumulation of energy intracavity accumulation of energy, until after pressure transducer 18 detects that the pressure of working chamber 3 reaches setting value, closing motor and stop accumulation of energy.
In the process of this accumulation of energy, the course of action of self adaptation on-off system 42 is as follows: when the pressure of accumulation of energy intracavity is when less than the 30% of capping value, adapting to the brake fluid pressure in cylinder body 49 and the thrust of its piston is not enough to the reset force of customer service the 3rd back-moving spring, self adaptation on-off system 42 is in the conduction state as shown in Figure 6.When the pressure of accumulation of energy intracavity is when more than the 30% of capping value, adapting to the reset force more than the 3rd back-moving spring of the brake fluid pressure in cylinder body 49, self adaptation on-off system 42 is closed as it is shown in fig. 7, cut off the 7th braked channel 43 with this.
On-line Control is dynamic to be out of order in idle situation, and first the 3rd electromagnetic switch valve 17 recovers normally open so that the brake fluid of fluid infusion intracavity is back in brake fluid reservoir 10 by the 4th braked channel 16；Simultaneously because spacing L between the first fluid infusion hole 7 and end cover 33 inner face is more than the piston thickness of master cylinder, accumulation of energy chamber 39 and the brake fluid in working chamber 3 can also be back in brake fluid reservoir elimination accumulation of energy pressure by the first fluid infusion hole 7 by the 4th braked channel 16；Self adaptation on-off system 42 is made to be in state as shown in Figure 6 to turn on the 7th braked channel 43.When driver tramples brake pedal, the insufficient pressure provided by pedal force is to overcome the reset force of the 3rd back-moving spring 46 in now self adaptation on-off system 42, therefore when conventional hydraulic braking process in self adaptation on-off system 42 can be constantly in conducting state as shown in Figure 6, to turn on the 7th braked channel 43.Therefore pedal force can be delivered on wheel drag by the 7th braked channel 43 and the first braked channel 24 by working chamber 3 and realize conventional hydraulic braking.
When On-line Control moves normal operation, when electronic control unit 26 detects the positive displacement signal of displacement transducer 9, namely illustrate that driver tramples brake pedal 2；Now electronic control unit control the 4th electromagnetic switch valve 41 is opened and recovers the normally open of the first electromagnetic switch valve 28, makes motor work simultaneously, and then realizes brake-by-wire.
Embodiment 4, as shown in Figure 8, brake pedal 2 is provided with tramples simulator 19.Trampling simulator 19 and include hydraulic cylinder, hydraulic cylinder piston rod is connected with brake pedal 2 by a push rod.Hydraulic cylinder includes first cavity 22 at its piston rod place and is positioned at the second cavity 21 of piston opposite side, is provided with the second back-moving spring 23 in the second cavity.One the 5th braked channel 20, it is connected the first cavity 22 and the second cavity 21 respectively by working chamber 3；And the piston cross-section that contacts with the first cavity 22 is long-pending long-pending less than piston cross-section contact with the second cavity 21.5th braked channel 20 is provided with pressure limiting valve 40, it is prevented that braking pressure excessive in working chamber is delivered to tramples on simulator 19.All the other structures of the present embodiment are with reference to embodiment 1.
When electronic control unit 26 detect brake pedal 2 trample stroke more big time, it is also corresponding more big that electronic control unit controls the braking pressure that pump produces.Due to the 5th braked channel, it is connected the first cavity 22 and the second cavity 21 respectively by working chamber 3, and the piston cross-section of the first cavity contact is long-pending long-pending more than the piston cross-section contacted with the second cavity；Make when brake pedal trample stroke more big time, the resistance being subject to trampling simulator is also more big, therefore improves further the verity trampling effect.
Embodiment 5, as it is shown in figure 9, brake pedal 2 is provided with the pedal rod 8 relative with the piston rod of master cylinder 1, pedal rod 8 is hinged on brake pedal 2.The piston rod outer face of master cylinder 1 is provided with a stepped hole 55；The groove 35 that the sectional area of stepped hole is gradually reduced inside by opening and stepped hole bottom surface is hemispherical shape.The internal diameter in hole less in described stepped hole 55 is also greater than the diameter of pedal rod 8.The end of pedal rod 8 is provided with spherical projection 36, and pedal rod 8 is arranged in stepped hole 55, and described projection is positioned at groove.Pedal rod 8 in the present embodiment eliminates stopping means with the attachment structure of the piston rod of master cylinder 1 compared with embodiment 1, makes structure simpler.All the other structures of the present embodiment are with reference to embodiment 1.
Claims (8)
1. a brake device for car, is characterized in that, including:
Brake fluid reservoir (10), it is used for storing brake fluid；
Master cylinder (1), its piston both sides are provided with working chamber (3) and fluid infusion chamber (4), are provided with the first back-moving spring (5) in working chamber；The long-pending A of the upper piston cross-section contacted with working chamber (3) of master cylinder (1) is less than the long-pending B of the piston cross-section contacted with fluid infusion chamber (4)；
Brake pedal (2), which is provided with the pedal rod (8) relative with the piston rod of described master cylinder, is provided with gap or separable is resisted against on piston rod end face between end and the piston rod end face of described pedal rod (8)；
Hydraulic control device, it has pump (11) and connects first braked channel (24) of described working chamber (3) and wheel drag (29), and described pump flows to described working chamber (3) and fluid infusion chamber (4) for aspirating the brake fluid in brake fluid reservoir；
Displacement transducer (9), its stroke being used for detecting brake pedal (2)；
Electronic control unit (26), it controls described hydraulic control device based on the displacement signal of institute's displacement sensors；
Described brake pedal (2) is provided with tramples simulator (19), and it is for applying the counteracting force corresponding to brake pedal shift motion to described brake pedal；
Described working chamber (3) is provided with pressure transducer (18)；First braked channel (24) is provided with the 4th electromagnetic switch valve (41) for controlling the first braked channel break-make；One end of described master cylinder (1) is provided with accumulation of energy chamber (39) and accumulation of energy chamber and is connected with working chamber (3), and accumulation of energy intracavity is provided with piston and energy-storaging spring (51)；
Described 4th electromagnetic switch valve (41) is normally closed open form electromagnetic switch valve；One self adaptation on-off system (42) is connected on the first braked channel (24) with connected mode in parallel with the 4th electromagnetic switch valve (41) by the 7th braked channel (43)；Described self adaptation on-off system (42) includes a self adaptation cylinder body (49), the internal cavity of self adaptation cylinder body is the stepped cavity (44) of narrowing toward each end broad in the middle, it is provided with the first self adaptation piston (52) and the second self adaptation piston (53) with one end in the middle part of stepped cavity, and the sectional area of the first self adaptation piston is more than the sectional area of the second self adaptation piston；It is connected by a connecting rod (45) between first self adaptation piston and the second self adaptation piston；It is positioned between the first self adaptation piston (52) and stepped cavity end corresponding thereto in described stepped cavity (44) and is provided with the 3rd back-moving spring (46)；Being provided with the second inlet opening (47) in the middle part of described self adaptation cylinder body between the first self adaptation piston and the second self adaptation piston, the self adaptation cylinder body side being positioned at same one end with the second self adaptation piston is provided with the second liquid outlet (48)；Axial spacing between second inlet opening (47) and the second liquid outlet (48) is less than the spacing between the first self adaptation piston and the second self adaptation piston；7th braked channel includes path and underpass, and upper path connects the first braked channel and the second inlet opening, and underpass connects the second liquid outlet and the first braked channel.
2. a kind of brake device for car according to claim 1, it is characterized in that, the piston rod of master cylinder is positioned at fluid infusion chamber (4) side, the piston side relative with working chamber (3) is provided with a guide rod (6) coaxial with piston rod, and guide rod runs through the cylinder body of master cylinder and is provided with sealing ring between guide rod and cylinder body；Described guide rod (6) cross-sectional area is more than piston rod cross-sectional area.
3. a kind of brake device for car according to claim 2, it is characterized in that, the end face of the cylinder body of master cylinder (1) is provided with a shoulder hole, and the bore being provided with two stage rank and shoulder hole in shoulder hole is gradually reduced inside by opening, and shoulder hole open end is provided with end cover (33)；The piston of master cylinder is located in the shoulder hole between two stage rank, and described working chamber (3) is located between piston and shoulder hole bottom surface, and described fluid infusion chamber (4) is located between piston and end cover；Master cylinder body between described end cover (33) and adjacent step is provided with the first fluid infusion hole (7) connected with fluid infusion chamber (4), and the cylinder body of the master cylinder between described shoulder hole bottom surface and adjacent step is provided with the first inlet opening (31) and the first liquid outlet (32) that connect with working chamber (3).
4. a kind of brake device for car according to claim 1, is characterized in that, piston rod end face is provided with hemispheric groove (35), and the end of pedal rod is provided with spherical projection (36), and described projection is positioned at groove.
5. a kind of brake device for car according to claim 1, it is characterized in that, the 3rd braked channel (13) it is provided with between described brake fluid reservoir (10) and master cylinder (1), 3rd braked channel includes the 3rd overall channel with brake fluid reservoir connection and the 3rd bypass passage being connected respectively at working chamber (3) and fluid infusion chamber (4), described pump (11) is located on the 3rd overall channel, the 3rd bypass passage being connected on described 3rd overall channel and with working chamber is provided with the second check valve (14) and the 3rd check valve (15) that brake fluid can be flowed to working chamber by brake fluid reservoir.
6. a kind of brake device for car according to claim 1, is characterized in that, one the 4th braked channel (16) connects fluid infusion chamber and brake fluid reservoir, and the 4th braked channel is provided with the 3rd electromagnetic switch valve (17) of open type.
7. a kind of brake device for car according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterized in that, one the 6th braked channel (37), it connects brake fluid reservoir (10) and fluid infusion chamber (4), and described 6th braked channel is provided with the first check valve (38) that a brake fluid can be flowed to fluid infusion chamber by brake fluid reservoir.
8. a kind of brake device for car according to claim 1, is characterized in that, also include:
One second braked channel (25) connects wheel drag and brake fluid reservoir；
Described simulator of trampling includes hydraulic cylinder, and hydraulic cylinder piston rod is connected with brake pedal by a push rod；Hydraulic cylinder includes first cavity (22) at its piston rod place and is positioned at second cavity (21) of piston opposite side, is provided with the second back-moving spring in the second cavity；
One the 5th braked channel (20), it is connected the first cavity and the second cavity respectively by working chamber；
Described first braked channel includes the first overall channel being connected with working chamber and the first bypass passage being connected respectively with each wheel drag；Each first bypass passage is respectively equipped with one first electromagnetic switch valve (28)；
Described second braked channel includes second overall channel tank connected with brake fluid and the second bypass passage being connected respectively with each wheel drag；Each second bypass passage is respectively equipped with one second electromagnetic switch valve (27).
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| CN201210066544.9A CN103303286B (en) | 2012-03-14 | 2012-03-14 | A kind of brake device for car |
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| CN201210066544.9A CN103303286B (en) | 2012-03-14 | 2012-03-14 | A kind of brake device for car |
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| CN103303286B true CN103303286B (en) | 2016-07-13 |
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| CN111169447B (en) * | 2020-01-03 | 2022-05-03 | 大陆泰密克汽车系统（上海）有限公司 | Brake master cylinder assembly, electronic hydraulic brake system and motor vehicle |
| CN112566824B (en) | 2020-05-13 | 2022-02-11 | 华为技术有限公司 | Hydraulic adjusting device, hydraulic adjusting system, braking system and control method |
| CN116552186B (en) * | 2022-01-28 | 2024-10-11 | 比亚迪股份有限公司 | Hydraulic suspension and vehicle |
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| CN1299754A (en) * | 1999-12-10 | 2001-06-20 | 丰田自动车株式会社 | Motor-rehicle braking system with device for controlling flow of fluid |
| DE10351374A1 (en) * | 2002-11-05 | 2004-05-13 | Advics Co., Ltd., Kariya | Hydraulic brakes for use with motor vehicle having anti-skid or vehicle stability control has pressure applied to main piston to reset it in specific position |
| CN101229807A (en) * | 2007-01-25 | 2008-07-30 | 丰田自动车株式会社 | Devices for creating brake pedal resistance |
| DE102010038328A1 (en) * | 2009-08-14 | 2011-02-17 | Continental Teves Ag & Co. Ohg | Braking system for motor vehicles |
| CN202508079U (en) * | 2012-03-14 | 2012-10-31 | 浙江万向精工有限公司 | Automobile brake apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101058614B1 (en) * | 2008-12-11 | 2011-08-25 | 현대모비스 주식회사 | Regenerative braking actuator device |
| RU2531788C2 (en) * | 2010-02-02 | 2014-10-27 | Тойота Дзидося Кабусики Кайся | Braking system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299754A (en) * | 1999-12-10 | 2001-06-20 | 丰田自动车株式会社 | Motor-rehicle braking system with device for controlling flow of fluid |
| DE10351374A1 (en) * | 2002-11-05 | 2004-05-13 | Advics Co., Ltd., Kariya | Hydraulic brakes for use with motor vehicle having anti-skid or vehicle stability control has pressure applied to main piston to reset it in specific position |
| CN101229807A (en) * | 2007-01-25 | 2008-07-30 | 丰田自动车株式会社 | Devices for creating brake pedal resistance |
| DE102010038328A1 (en) * | 2009-08-14 | 2011-02-17 | Continental Teves Ag & Co. Ohg | Braking system for motor vehicles |
| CN202508079U (en) * | 2012-03-14 | 2012-10-31 | 浙江万向精工有限公司 | Automobile brake apparatus |
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