CN212125093U - Electric central parking brake - Google Patents
Electric central parking brake Download PDFInfo
- Publication number
- CN212125093U CN212125093U CN202020918837.5U CN202020918837U CN212125093U CN 212125093 U CN212125093 U CN 212125093U CN 202020918837 U CN202020918837 U CN 202020918837U CN 212125093 U CN212125093 U CN 212125093U
- Authority
- CN
- China
- Prior art keywords
- brake
- parking brake
- gear
- worm
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Braking Arrangements (AREA)
- Gear Transmission (AREA)
Abstract
The utility model discloses an electrodynamic type central authorities parking brake, include: the brake front shell is provided with an accommodating chamber, fixedly connected to the transmission shell and provided with a through hole; two motors, which are both arranged in the accommodating chamber; the output ends of the two motors are respectively connected with the two worms through two couplers, the two worms respectively transmit power to the two locking gears through two turbines and two transmission shafts, one side of each of the two locking gears is of a gear structure, and the other side of each of the two locking gears is of a smooth structure; one end of the brake rear shell passes through the through hole to be connected with the transmission shaft, the other end of the brake rear shell is rotatably arranged in the brake front shell, and the brake rear shell is provided with a groove; wherein, the recess is inside to have the internal gear, and the internal gear can mesh with two locking gears mutually.
Description
Technical Field
The utility model relates to an automobile brake technical field, more specifically, the utility model relates to an electrodynamic type central parking brake.
Background
Parking brakes, commonly referred to as motor vehicle mounted hand brakes, are key components in automotive parking brake systems for ensuring vehicle stability after braking and, in particular, preventing accidents due to rolling when the vehicle is parked on a sloped road.
The braking principle of the central parking brake is that the parking brake is installed on a transmission shaft by utilizing friction force braking, and the vehicle is ensured not to slide by braking the transmission shaft.
At present, a common central parking brake mainly adopts a pull wire type, namely a driver needs to pull up a parking brake lever, if an actuating mechanism is a drum brake, a brake rear shell fixedly connected with a transmission shaft is locked by a brake shoe to stabilize a vehicle, and if the actuating mechanism is a disc brake, a brake caliper compresses a brake pad to realize the purpose.
When the vehicle runs under a complex working condition and the parking brake is frequent, certain physical consumption and psychological pressure can be brought to the driver, and if the vehicle works in the environment for a long time, misoperation can easily occur to the driver. When parking braking and driving starting are performed on a slope, a driver needs to have certain driving experience, and if the driver does not operate the vehicle in place, the engine is shut down or the vehicle slips back.
In addition, in order to ensure the safety of the parking brake, many drivers can operate the parking brake pull rod to the limit position without considering the current road environment and load state of the vehicle, so that the abrasion and deformation of mechanical parts such as a parking brake cable and the like are easily caused, the mechanical parts are easily in a stress fatigue state, and the safety of a vehicle parking brake system is reduced. When the stay cable of the stay-supported parking braking system deforms and extends, after a certain number of use times, the parking braking performance is weakened until failure, so that the vehicle has certain potential safety hazards.
In addition, when a driver forgets to pull up the parking brake pull rod due to negligence after the engine is shut down and stops, the automobile slips, traffic accidents are caused, and great damage and loss are brought to an owner and a victim. And the driver forgets to release the parking brake cable when starting the vehicle to run due to negligence, so that great damage is caused to the parking brake system.
When a driver carelessly stops the engine after the engine is shut down, the driver easily forgets to pull up the parking brake pull rod and hurries away to leave a vehicle which is not stably braked, and the vehicle is easy to slide accidentally to cause traffic accidents.
Therefore, how to improve the central parking brake and reduce the labor intensity of the driver and forget the operation steps is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing and developing an electrodynamic type central parking stopper, replace the drum-type braking form among the prior art through motor drive, reduced the potential safety hazard of driving, cooperate through motor and worm wheel, realize the transmission of power, effectively improve the life of stopper, guarantee the stability of vehicle parking braking state through the mechanical auto-lock of worm gear.
The utility model provides a technical scheme does:
an electric central parking brake comprising:
the front shell cover is fixedly connected to the transmission shell; and
the brake front shell is detachably connected with the front shell cover to form an accommodating chamber, and the brake front shell is provided with a first through hole;
one end of the brake rear shell is provided with a second through hole, the other end of the brake rear shell is of a groove structure, and one end of the brake rear shell penetrates through the first through hole, so that the second through hole and the first through hole are coaxially arranged;
a braking device disposed within the containment chamber, the braking device comprising:
a motor;
a worm connected to an output shaft of the motor;
a worm wheel in meshed transmission with the worm;
the connecting shaft is coaxially connected with the worm wheel;
the locking gear is coaxially arranged on the connecting shaft, one side of the outer circumference of the locking gear is of a gear structure, and the other side of the outer circumference of the locking gear is of a smooth structure;
the second through hole is connected with the transmission shaft, the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the groove structure is arranged inside the containing chamber, an internal gear is arranged inside the groove structure, and the internal gear can be meshed with the gear structure.
Preferably, the braking device further includes:
a partition plate disposed inside the first through hole;
wherein the connecting shafts can respectively pass through the partition plates in a sliding manner;
preferably, the braking device further includes:
a coupling disposed between the motor and the worm.
Preferably, a plurality of sets of braking means can be provided in the housing.
Preferably, two sets of braking devices are arranged in the accommodating chamber and are arranged in a central symmetry manner.
Preferably, both ends of the connecting shaft respectively penetrate through the front shell cover and the brake rear shell, and the transmission shaft penetrates through the front shell cover and the brake rear shell.
Preferably, two sets of braking devices are arranged in the accommodating chamber and are arranged in mirror symmetry.
Beneficial effect:
the utility model relates to a development's an electrodynamic type central parking stopper adopts motor drive to replace original drum brake form to replace the parking braking pull rod with the parking button, adopt drive-by-wire parking braking's form promptly, simplified driver's operation, cooperate through motor and worm wheel, realize the transmission of power, effectively improve the life of stopper, guarantee the stability of vehicle parking braking state through the mechanical auto-lock of worm wheel.
Drawings
Fig. 1 is a schematic structural view of one side of the electric central parking brake of the present invention.
Fig. 2 is a schematic view of another side structure of the electric central parking brake of the present invention.
Fig. 3 is a schematic structural diagram of the front shell and the front shell cover of the brake of the present invention.
Fig. 4 is a schematic structural diagram of the brake back shell of the present invention.
Fig. 5 is a front view structural diagram of the accommodating chamber of the front shell of the brake of the present invention.
Fig. 6 is a schematic view of another side structure of the accommodating chamber of the front shell of the brake of the present invention.
Fig. 7 is a schematic structural diagram of the braking device of the present invention.
Fig. 8 is a schematic structural diagram of the first connecting shaft according to the present invention.
Fig. 9 is an assembly structure diagram of the first connecting shaft according to the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1 and 2, the present invention provides an electric central parking brake, including: the brake device comprises a front brake shell 111, a front shell cover 112, a rear brake shell 120 and a brake device 130, wherein as shown in fig. 3, the front brake shell 111 and the front shell cover 112 are detachably connected to form a containing chamber, the brake device 130 is arranged in the containing chamber, the front cover plate 112 is detachably connected to a transmission outer shell of a vehicle through bolts, and the front brake shell 111 is kept still during the normal running of the vehicle. And the brake front case 111 has a first through hole; as shown in fig. 4, one end of the brake back case 120 has a third through hole 122, and one end of the brake back case 120 passes through the first through hole to be connected with a transmission shaft of a vehicle by a bolt, as shown in fig. 4, the other end of the brake back case 120 is provided with a groove; during normal driving of the vehicle, the brake rear housing 120 rotates together with the transmission shaft; the transmission shaft passes through the third through hole 122 and the front cover plate 112, the other end of the brake rear shell 120 is rotatably arranged in the accommodating chamber, and the brake front shell 111 and the brake rear shell 120 are not fixedly connected and can relatively rotate; the ring gear 121 is in interference fit with the groove, and the braking device 130 is disposed in the accommodating chamber and cooperates with the brake rear case 120 to brake the vehicle.
As shown in fig. 5, 6 and 7, the braking device 130 may be provided with one or more sets to improve the strength of the parking brake, and in this embodiment, two sets are provided, which are centrosymmetric and have the same structure, including: a first motor 131a, a second motor 131b, a first worm 132a, a second worm 132b, a first worm wheel 133a, a second worm wheel 133b, a first connecting shaft 134a, a second connecting shaft 134b, a first locking gear 135a, a second locking gear 135b, a first partition 113a and a second partition 113b, wherein the first motor 131a is disposed in the accommodating chamber, an output shaft of the first motor 131a is connected to the first worm 132a through a coupling, the first worm wheel 133a is engaged with the first worm 132a, as shown in fig. 8, the first connecting shaft 134a includes a first portion 201, two second portions 202 and two third portions 203, wherein one end of the two second portions 202 is disposed at both ends of the first portion 201, respectively, and the two second portions 202 are key-connected portions, the third portions 203 are disposed at the other end of the two second portions 202, respectively, and the diameters of the first portion 201, the second portion 202 and the third portion 203 are reduced in sequence; as shown in fig. 9, the first worm wheel 133a is disposed on the second portion 202, that is, the first worm wheel 133a is in a key connection with the first connecting shaft 134a, the first locking gear 135a is disposed on the other second portion 202 through the key connection, one side of the outer circumference of the first locking gear 135a is in a gear structure, and the other side is in a smooth structure; the gear structure of the outer circumference of the first locking gear 135a can be meshed with the inner gear ring 121, the lead angle of the first worm 132a is smaller than the equivalent friction angle between the teeth of the meshed gears, the transmission between the first worm 132a and the first worm gear 133a has a self-locking function, and reverse self-locking can be realized, namely, the first worm 132a can only drive the first worm gear 133a to rotate, but the first worm gear 133a cannot drive the first worm 132a to rotate, so that vehicle slipping after the vehicle is stopped stably can be avoided; a first partition plate 113a and a second partition plate 113b are symmetrically arranged in the first through hole, the first partition plate 113a and the second partition plate 113b have the same structure and are both fan-shaped structures, the first partition plate 113a and the second partition plate 113b are provided with second through holes, and the first part 201 can rotatably pass through the second through hole of the first partition plate 113a through a bearing; the two third portions 203 respectively pass through the grooves of the front housing cover 112 and the brake rear housing 120 in a rotatable manner through bearings, the second motor 131b, the second worm 132b, the second worm wheel 133b, the second connecting shaft 134b and the second locking gear 135b are identical in structure with the first motor 131a, the first worm 132a, the first worm wheel 133a, the first connecting shaft 134a and the first locking gear 135a, and the connecting structure is also identical, and the second connecting shaft 134b passes through the second through hole of the second partition 113b in a rotatable manner through bearings.
Electrodynamic type central parking brake divide into static part and rotating part, static part has preceding shell 111 of stopper, preceding shell cover 112, first baffle 113a, second baffle 113b, first motor 131a, second motor 131b, first worm 132a, second worm 132b, first worm wheel 133a, second worm wheel 133b, first connecting axle 134a, second connecting axle 134b, first locking gear 135a and second locking gear 135b, rotating part has stopper backshell 120, ring gear 121 and third through hole 122, and in the vehicle normal driving process, static part keeps motionless, first locking gear 135a and second locking gear 135 b's gear structure one side breaks away from with ring gear 121, rotating part rotates along with the transmission shaft.
Electrodynamic type central authorities parking brake in still include: a vehicle speed sensor, which is arranged in an axle housing of a vehicle drive axle and is used for detecting the vehicle speed; an engine speed sensor, which is arranged at the position of the engine cylinder body close to the flywheel and is used for detecting the engine speed; a pedal pressure sensor provided in the brake pedal for detecting a pressure on the pedal; the inclination angle sensor is arranged between the primary and secondary driver seats of the vehicle, is close to the mass center position of the vehicle, and is used for detecting the parking gradient; a position detection sensor provided in the brake rear case for detecting a meshing state of the two lock gears with an internal gear; the parking manager is connected with the two motors and arranged below a vehicle driving seat; and the whole vehicle manager is arranged under a vehicle driving seat, and is connected with the vehicle speed sensor, the engine rotating speed sensor, the pedal pressure sensor, the inclination angle sensor, the position detection sensor and the parking manager.
When the vehicle is parked and braked, the brake front shell 111 is fixed, the first motor 131a and the second motor 131b are started, the output shaft of the first motor 131a drives the first worm 132a and the first worm wheel 133a to rotate through the coupler, the first worm wheel 133a drives the first locking gear 135a to rotate through the first connecting shaft 134a, the output shaft of the second motor 131b drives the second worm 132b and the second worm wheel 133b to rotate through the coupler, the second worm wheel 133b drives the second locking gear 135b to rotate through the second connecting shaft 134b, the first locking gear 135a and the second locking gear 135b rotate 180 degrees, one side of the gear structure of the first locking gear 135a and the second locking gear 135b is meshed with the inner gear ring 121, braking is realized through the self-locking principle of the first worm 132a, the second worm 132b, the first worm wheel 133a and the second worm wheel 133b, the brake rear shell 120 is fixed, the drive shaft attached to the brake rear housing 120 will also be stationary.
Electrodynamic type central authorities parking brake can effectively alleviate driver's operating strength, take place the swift current car phenomenon when avoiding vehicle slope to park simultaneously.
The utility model provides a pair of electrodynamic type central authorities parking brake's working process includes following step:
the method comprises the steps that firstly, various signals capable of reflecting the running state of a vehicle are collected, wherein the signals comprise a vehicle speed signal, an engine rotating speed signal, a parking gradient signal, a parking button signal, a driver seat signal, a brake pedal signal and a parking brake pressure signal;
the engine speed can be obtained by an engine speed sensor; the parking button signal and the driver seat signal are both switching value signals; the brake pedal signal is an analog signal and can be obtained through a pedal pressure sensor; the parking gradient signal is also an analog signal and can be monitored by an inclination angle sensor;
step two, when a driver steps on a brake pedal to brake the vehicle, and the engine is shut down and stopped, considering the practical situation, the road surface of the stopped position is uneven, the vehicle can slide and the like, the vehicle is in a normal parking state when the vehicle speed is not more than 0.3m/s, and the vehicle cannot be parked when the vehicle speed is more than 0.3 m/s;
after the engine is shut down, the speed of the vehicle is not more than 0.3m/s, the parking gradient is not more than 5 degrees, the vehicle is in normal parking brake, at the moment, the whole vehicle manager only receives a parking brake button signal implemented by a driver, the parking brake signal is transmitted to the parking manager through a bus according to a command, and the first motor 131a and the second motor 131b act according to requirements. If the parking brake button is turned on, the output shafts of the first motor 131a and the second motor 131b rotate in the forward direction to drive the worm gear mechanism to reduce the speed and increase the torque, and then the power is transmitted to the first locking gear 135a and the second locking gear 135b through the first connecting shaft 134a and the second connecting shaft 134b, and the first locking gear 135a and the second locking gear 135b are gradually engaged with the ring gear 121. The brake back housing 120 will be stationary and the drive shaft attached to the brake back housing 120 will also be stationary. When the first and second lock gears 135a and 135b are in a complete engagement state with the ring gear 121, the first and second motors 131a and 131b stop rotating, and the parking button lamp is turned on. After the first motor 131a and the second motor 131b complete the parking braking action, the first motor 131a and the second motor 131b are kept stationary, and the electric central parking brake ensures the stability of the parking braking state of the vehicle through the mechanical self-locking of the internal worm gear.
When the parking gradient is larger than 5 degrees, the whole vehicle manager can calculate the braking torque required by vehicle parking according to the road gradient signal detected by the inclination angle sensor, and meanwhile, the braking pressure is monitored. When the first locking gear 135a and the second locking gear 135b are in a complete engagement state with the ring gear 121, the first motor 131a and the second motor 131b stop rotating, if the output torque during the braking of the parking brake cannot meet the braking torque required by the parking of the vehicle at this time, and the parking button lamp flickers, it indicates that the parking brake cannot be performed on the slope, the vehicle can be braked only by the driver stepping on the brake pedal, and the driver needs to change the parking position.
Wherein the braking torque required by parking the vehicle is as follows:
Mreq＝mgRsinα；
in the formula, MreqThe braking torque required for parking the vehicle, m is the mass of the vehicle, g is the gravity acceleration, R is the radius of the wheel, and alpha is the parking gradient.
When the motor normally works, the current is rated current, and the current of the motor is not very large. When a vehicle is parked and braked, the parking brake generates braking force, and the motor in the parking brake is in a locked-rotor state under the action of counter force, so that the current of the motor can be increased by 1-2 times.
Therefore, the parking brake output torque at the time of braking is:
MZ＝Mdi1i2η；
in the formula, MZFor output of torque during braking of the parking brake, MdFor the locked-rotor output torque of the motor, i1For the gear ratio of worm-and-gear speed-reducing torque-increasing mechanism, i2η is the mechanical efficiency of the parking brake, which is the gear ratio of the lock gear and the internal gear.
The locked-rotor output torque of the motor is as follows:
in the formula, N is the electrode pair number of the motor, and N is the number of turns of each phase in series connectionU is motor input voltage, U1For the electronic component tube voltage drop, a is the electrode claw coefficient, β is the motor resistance, and φ is the magnetic flux of each magnetic pole.
After the vehicle is stopped and flamed out, the rotating speed of an engine is zero, if the pressure on a driver seat is zero at the moment, the whole vehicle manager judges that the current driver leaves, if a parking brake button is not pressed at the moment, the fact that the driver forgets the parking brake operation is indicated, the whole vehicle manager actively orders the parking manager to act according to the requirement, and the parking brake of the vehicle is completed:
the output shafts of the first motor 131a and the second motor 131b rotate in the forward direction to drive the worm gear mechanism to reduce speed and increase torque, and then the power is transmitted to the first locking gear 135a and the second locking gear 135b through the first connecting shaft 134a and the second connecting shaft 134b, and the first locking gear 135a and the second locking gear 135b are gradually meshed with the ring gear 121. The brake back housing 120 will be stationary and the drive shaft attached to the brake back housing 120 will also be stationary. When the first and second lock gears 135a and 135b are in a complete engagement state with the ring gear 121, the first and second motors 131a and 131b stop rotating, and the parking button lamp is turned on. After the first motor 131a and the second motor 131b complete the parking braking action, the first motor 131a and the second motor 131b are kept stationary, and the electric central parking brake ensures the stability of the parking braking state of the vehicle through the mechanical self-locking of the internal worm gear.
When the driver stops on the slope and does not apply the parking brake, the driver does not leave, the vehicle can slide immediately, and therefore the driver can actively apply the parking brake on the slope and cannot forget to park.
And step three, when the state of the parking button is off, namely a driver turns off the parking brake system, after the parking brake is released, the whole vehicle manager receives the vehicle state parameters, and if the vehicle is parked on the flat ground, the parking brake is released by the parking manager.
The parking brake release signal is transmitted to the parking manager through the bus, and the first motor 131a and the second motor 131b operate as required. The output shafts of the first motor 131a and the second motor 131b rotate in opposite directions to drive the worm gear mechanism to rotate in opposite directions, and then the first connecting shaft 134a and the second connecting shaft 134b drive the first locking gear 135a and the second locking gear 135b to rotate in opposite directions, so that the first locking gear 135a and the second locking gear 135b are gradually disengaged from the ring gear 121. When the first and second lock gears 135a and 135b are in a completely disengaged state from the ring gear 121, the first and second motors 131a and 131b stop rotating, the parking button lamp is turned off, and the parking brake of the vehicle is released.
If the vehicle stops on a slope, the driver is required to step on the brake pedal first, the service brake system provides braking force required by wheels, and the parking brake can be released.
When the engine is detected to be turned on and the vehicle is not on a slope, the vehicle is judged to be started, but the driver forgets to release the brake pull rod, and the parking brake can be automatically released.
If the vehicle is parked on a slope, the driver has already depressed the brake pedal first, and not the parking brake button, the parking brake may also be automatically released:
the parking brake release signal is transmitted to the parking manager through the bus, and the parking manager operates the first motor 131a and the second motor 131b as required. The output shafts of the first motor 131a and the second motor 131b rotate in opposite directions to drive the worm gear mechanism to rotate in opposite directions, and then the first connecting shaft 134a and the second connecting shaft 134b drive the first locking gear 135a and the second locking gear 135b to rotate in opposite directions, so that the first locking gear 135a and the second locking gear 135b are gradually disengaged from the ring gear 121. When the first and second locking gears 135a and 135b are completely separated from the ring gear 121, the first and second motors 131a and 131b stop rotating, the parking button lamp is turned off, and the parking brake of the vehicle is released.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (7)
1. An electric central parking brake comprising:
the front shell cover is fixedly connected to the transmission shell; and
the brake front shell is detachably connected with the front shell cover to form an accommodating chamber, and the brake front shell is provided with a first through hole;
one end of the brake rear shell is provided with a second through hole, the other end of the brake rear shell is of a groove structure, and one end of the brake rear shell penetrates through the first through hole, so that the second through hole and the first through hole are coaxially arranged;
a braking device disposed within the containment chamber, the braking device comprising:
a motor;
a worm connected to an output shaft of the motor;
a worm wheel in meshed transmission with the worm;
the connecting shaft is coaxially connected with the worm wheel;
the locking gear is coaxially arranged on the connecting shaft, one side of the outer circumference of the locking gear is of a gear structure, and the other side of the outer circumference of the locking gear is of a smooth structure;
the second through hole is connected with the transmission shaft, the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the groove structure is arranged inside the containing chamber, an internal gear is arranged inside the groove structure, and the internal gear can be meshed with the gear structure.
2. The electric central parking brake of claim 1, wherein the braking device further comprises:
a partition plate disposed inside the first through hole;
wherein the connecting shafts can respectively pass through the partition plates in a sliding manner.
3. The electric central parking brake of claim 2, wherein the braking device further comprises:
a coupling disposed between the motor and the worm.
4. The electric central parking brake of claim 3, wherein a plurality of sets of braking devices can be disposed in the housing chamber.
5. The electric central parking brake of claim 3 wherein two sets of brake devices are disposed in the chamber and are arranged in a central symmetry.
6. The electric central parking brake of claim 5, wherein both ends of the connecting shaft pass through the front housing cover and the brake rear housing, respectively, and the transmission shaft passes through the front housing cover and the brake rear housing.
7. The electric central parking brake of claim 6 wherein two sets of brake devices are disposed in the chamber and are mirror images.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020918837.5U CN212125093U (en) | 2020-05-27 | 2020-05-27 | Electric central parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020918837.5U CN212125093U (en) | 2020-05-27 | 2020-05-27 | Electric central parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212125093U true CN212125093U (en) | 2020-12-11 |
Family
ID=73669888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020918837.5U Expired - Fee Related CN212125093U (en) | 2020-05-27 | 2020-05-27 | Electric central parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212125093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452774A (en) * | 2020-05-27 | 2020-07-28 | 吉林大学 | Electric central parking brake and control method thereof |
| CN111452774B (en) * | 2020-05-27 | 2024-07-30 | 吉林大学 | Electric central parking brake and control method thereof |
-
2020
- 2020-05-27 CN CN202020918837.5U patent/CN212125093U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452774A (en) * | 2020-05-27 | 2020-07-28 | 吉林大学 | Electric central parking brake and control method thereof |
| CN111452774B (en) * | 2020-05-27 | 2024-07-30 | 吉林大学 | Electric central parking brake and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9102327B2 (en) | Engine start control device for hybrid electric vehicle | |
| KR101250138B1 (en) | Vehicle driving apparatus and control method for same | |
| KR101394695B1 (en) | Method for improving steering feel in gear neutral position drivng of vehicle | |
| CN103448544B (en) | A kind of Vehicle auxiliary drive method | |
| JP2010075036A (en) | Controlling apparatus of electric automobile | |
| CN202863414U (en) | Backward sliding resistant braking device for half-slope start of manual transmission car | |
| JP5885534B2 (en) | Control system | |
| JP2008307996A (en) | Controller for vehicle | |
| WO2006137188A1 (en) | Generator/drive motor enabling hybrid function | |
| CN203176342U (en) | Hill starting assisting device of manual-gear automobile and automobile | |
| CN201872738U (en) | Electronic parking brake | |
| JP2011245935A (en) | Vehicle parking system | |
| JP2011011579A (en) | Control device for vehicle | |
| CN212125093U (en) | Electric central parking brake | |
| CN205905780U (en) | New energy automobile and transmission system and power assembly thereof | |
| GB2455507A (en) | Electric motor vehicle emergency braking system | |
| US7229379B2 (en) | Transmission device for land vehicle, such as a cart | |
| CN111452774B (en) | Electric central parking brake and control method thereof | |
| US10969011B2 (en) | Method and system for disengaging parking pawl in hybrid transmission | |
| CN111452774A (en) | Electric central parking brake and control method thereof | |
| CN109532787B (en) | Vehicle axle with hydrodynamic retarder | |
| CN201046758Y (en) | Electric vehicle driving speed-change gear | |
| CN103448696B (en) | A kind of vehicle auxiliary drive mechanism | |
| CN101216081A (en) | Automobile transmission-gear box electromagnetic clutch | |
| Paul et al. | Electro-Magnetic parking brake system for electric vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 Termination date: 20210527 |