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286 results about "Parking pawl" patented technology

A parking pawl is a device fitted to a motor vehicle's automatic transmission in order for it to lock up the transmission. It is engaged when the transmission shift lever selector is placed in the Park position, which is always the first position (topmost on a column shift, frontmost on a floor shift) in all cars sold in the United States since 1965 (when the order was standardised by the Society of Automotive Engineers (SAE)) through SAE J915, and in most other vehicles worldwide.

Vehicle parking locking device

ActiveCN103807434AAvoid bitesReduce shift forceGearing controlDetentEngineering
A vehicle parking locking device comprises a parking ratchet wheel, a parking detent and an actuating mechanism, the actuating mechanism comprises a pressing head used for driving the parking detent to move between a locking position and an unlocking position in a switched mode, the parking detent comprises a first end and a second end opposite to the first end, and the first end is close to the parking ratchet wheel; the pressing head comprises a supporting frame, a containing space is formed inside the supporting frame, the first end on the back of the parking detent extends outwards to form a locating piece in the length extending direction of the parking detent, the locating piece is contained in the containing space when the parking detent is located in the locking position, and the locating piece penetrates out of the containing space and stopped by the supporting frame when the parking detent is located at the unlocking position. When the parking detent in the vehicle parking locking device is located at the unlocking device, the locating piece on the parking detent can be stopped by the supporting frame, the range in which the parking detent moves downwards due to shake is limited, the parking detent is prevented from being meshed with the parking ratchet wheel, and therefore it is guaranteed that mistaken gear shifting of the parking detent cannot occur.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1

Method of operating a display system in a vehicle for finding a parking place

A method of operating a display system in a vehicle (03) for finding a suitable parking place (06) with at least one camera (01) with which an observation area in the vicinity of the vehicle (03) can be recorded, with an image processing unit in which the image data coming from a camera (03) can be processed and a display screen (02) in the interior of the vehicle on which the image data coming from the image processing unit can be displayed as an image (07). A parking place symbol (08, 18, 20) is superimposed by the image processing unit on the current image (07) on the display screen (02), symbolizing true to scale an area in the current image (07) which the vehicle (03) can reach in parking, starting from its current position, taking into account the properties of the vehicle, in particular the size of the vehicle and the maximum steering angle.
Owner:DONNELLY HOHE GMBH & CO KG

Open parking lot empty parking space prompting system

The present invention relates to an open parking lot empty parking space prompting system. The system comprises a sensing device, an industrial personal computer, a prompting device and an illegal parking-prevention device; the sensing device is located at a position in a rear position of a parking space, wherein the rear position of the parking space is adjacent to the middle of the parking space; the prompting device comprises an empty parking space position prompting device and an empty parking space display; the empty parking space position prompting device comprises an automatic lifting bar and a prompting lamp, wherein the automatic lifting bar is arranged at the rear end of the parking space; and the illegal parking-prevention device comprises a second pressure sensor and hydraulic road piles, wherein the hydraulic road piles are arranged on boundary lines on two sides of the parking space, and the second pressure sensor is arranged on the boundary of the front end of the parking space and is correspondingly connected with the hydraulic road piles. According to the open parking lot empty parking space prompting system of the present invention, different colors are displayed at different heights, so that the use condition of the parking space can be indicated, and therefore, a driver can be guided to search an empty parking space more effectively, time can be saved; and the alarm prompting of an alarm and the lifting of the hydraulic road piles can assist in avoiding horizontal parking of the driver or occupying two parking spaces by one vehicle, and practicality can be improved.
Owner:SHANDONG JIAOTONG UNIV

Parking and braking mechanism of automobile gear box

The invention discloses a parking and braking mechanism of an automobile gear box, which mainly comprises a parking gear wheel, a parking ratchet, an actuating rod, a slipping spring, a cam slide block, a plurality of support pins, an intermediate moving rod and a positioning track plate, wherein the cam slide block is connected at the front end of the actuating rod and does slipping connection with the rear end of the parking ratchet under the function of precompression force of the slipping spring; the actuating rod is connected on the intermittent moving rod; and the positioning track plate is connected with the intermittent moving rod when in shift P and shift R, and is disconnected from the intermittent moving rod when in shift N and shift D. When in shift P, the parking ratchet is pushed to the parking gear wheel by the driving pin on the positioning track plate through the intermittent moving rod, the actuating rod, the slipping spring and the cam slide block, and then the gear box is braked. By arranging the support pins and the intermittent moving rod, the slipping speed and control precision of the parking and braking mechanism can be enhanced, and the service life of the braking mechanism is prolonged through the slipping connection of linear contact.
Owner:ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1

Hydraulic park pawl brake system

A handle bar master cylinder assembly for supplying pressurized hydraulic fluid through a brake line to actuate a brake in a vehicle. The assembly comprises a master cylinder having a master cylinder body defining a hydraulic fluid reservoir, a reciprocating master cylinder piston located within a hydraulic fluid reservoir, a handle bar attachment bracket connected to the master cylinder body and having a park pawl engagement section, a hand brake lever rotatably secured to the handle bar attachment bracket and in abutting contact with the reciprocating master cylinder piston, and a park pawl pivotably secured to the hand brake lever, the park pawl having an end engageable with the park pawl engagement section of the handle bar attachment bracket to maintain the brake lever in an applied position. When the pawl is set, a park pawl compensation flexure occurs due to a change in hydraulic fluid temperature.
Owner:HAYES BRAKE

Gearbox and automatic parking executing device thereof

The invention provides a gearbox and an automatic parking executing device thereof. The automatic parking executing device comprises a parking gear, a parking pawl, a parking executing rod, an automatic parking driving mechanism and a manual P-gear unlocking mechanism. When the parking pawl is clamped in a gear groove of the parking gear, P-gear parking is achieved; and the parking executing rod can move in a reciprocating manner so as to drive the parking pawl to be engaged into or disengaged from the P gear. The automatic parking driving mechanism drives the parking executing rod to automatically move in a reciprocating manner. The manual P-gear unlocking mechanism can drive the parking executing rod to move in a reciprocating manner. When a vehicle cannot be started or a gearbox breaksdown, the manual P-gear unlocking mechanism can be operated to drive the parking executing rod to move in the direction of being engaging into the P gear so that the parking pawl can be clamped into the gear groove of the parking gear, the parking pawl can still be engaged into the P gear, and therefore safety is improved. When the vehicle is locked in the P-gear state, the manual P-gear unlockingmechanism can also be operated to drive the parking executing rod to move in the direction of being disengaged from the P gear, the parking pawl can disengage from the gear groove of the parking gear, P gear unlocking is achieved, and then the vehicle can be moved for maintenance conveniently.
Owner:SAIC MOTOR

A P gear actuator of automobile transmission

The invention discloses a P gear actuator of an automobile transmission, which includes a parking motor arranged outside the transmission case, a worm gear assembly, a rack assembly, a parking ratchet and a parking pawl, etc.; the rack assembly It is composed of a rack shaft, a parking cam limit sleeve, a parking cam and a parking spring; the worm gear assembly is composed of a worm gear and a gear set on the worm shaft, and one end of the worm shaft extends out of the transmission case and is connected to the P gear sensor The gear of the worm gear assembly meshes with the rack part on the rack shaft of the rack assembly; the output end of the parking motor is connected with a worm, and the worm meshes with the worm wheel on the worm gear assembly; the parking cam and the parking pawl One end is close to, and the ratchet at the other end of the parking pawl is matched with the tooth groove on the parking ratchet that is connected to the transmission input shaft. The beneficial effect of the invention is that the structure is simple and compact, the overall performance is good, the reliability of the car parking is improved, and the manufacturing and control are easy, and the production cost is low.
Owner:CHONGQING TSINGSHAN IND

Electric parking brake (EPB) control method for electric car

The invention relates to the field of vehicle automatic control and in particular relates to a parking brake control method. An electric parking brake (EPB) control method for an electric car is characterized by carrying out following control after setting the delay time: from a driving state to a parking brake lock state, firstly carrying out lock operation on a vehicle by using an EPB system, waiting for the delay time and then sending a parking brake signal to an electric parking pawl (EPP) system by a vehicle control unit to carry out lock operation on the vehicle; and from the parking brake lock state to the driving state, firstly controlling the EPP system to be unlocked by the vehicle control unit after a brake pedal is depressed, waiting for the delay time and then unlocking the EPB system. The method has the beneficial effects that the reliability of the EPP system is improved by starting the EPB and EPP systems in sequence, thus avoiding seizure of the EPP system under the full load condition or the long ramp condition and eliminating abnormal sounds produced by parking on the short ramp and unlocking under the full load condition; and meanwhile, parking and unlocking can be smoothly carried out under the long ramp condition, thus improving the reliability of vehicle control.
Owner:SAIC MOTOR

Parking locking device used in vehicle transmission and transmission utilizing same

The invention discloses a parking locking device used in a vehicle transmission and a transmission utilizing same. The parking locking device comprises parking pawls, a pawl base used for mounting the parking pawls in a pivotal manner and a parking ratchet wheel, circumference of which is fixed on a power input shaft of the transmission to rotate along with the power input shaft, wherein the at least two parking pawls are arranged along the outer side of the circumference of the parking ratchet wheel, and one of the parking pawls is engaged with the parking ratchet wheel to form brake locking while the power input shaft is reversed; a pivotal end is formed at one end of each parking pawl, and an engaged end is formed at the other end of each parking pawl to abut against and fit to an outer gear ring of the parking ratchet wheel all the time. The parking locking device is suitable for preventing a vehicle from reversing; after power shutoff, a transmission shaft of the transmission can be effectively prevented from reversing or the vehicle can be effectively prevented from reversing while each pawl can form brake engage, or one pawl is instantly jointed with ratchet teeth of the parking ratchet wheel, so that the rotation stroke of the parking ratchet wheel is reduced; relatively great impact force is prevented from being generated when the pawls are jointed with ratchet teeth of the parking ratchet wheel, so that the parking pawls are prevented from being damaged; and meanwhile, the noises and the vibrations are reduced.
Owner:CHONGQING HAIBEN HYDRAULIC MACHINERY MFG
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