CN203500449U - Automobile parking locking mechanism - Google Patents
Automobile parking locking mechanism Download PDFInfo
- Publication number
- CN203500449U CN203500449U CN201320533441.9U CN201320533441U CN203500449U CN 203500449 U CN203500449 U CN 203500449U CN 201320533441 U CN201320533441 U CN 201320533441U CN 203500449 U CN203500449 U CN 203500449U
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- Prior art keywords
- ratchet
- return wheel
- return
- parking
- drive portion
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Abstract
The utility model relates to an automobile parking locking mechanism, which is used for solving the problems of the existing parking locking mechanism that excessive parts are required, the operation reliability is poor, and the like. The automobile parking locking mechanism comprises a ratchet wheel, a ratchet pawl assembly, a return wheel and a motor, wherein the ratchet wheel is coaxially assembled with a vehicle parking gear, the ratchet pawl assembly is provided with a ratchet pawl and a ratchet pawl driving part, the ratchet pawl is matched with the ratchet wheel, the ratchet pawl driving part is assembled with the return wheel, a group of return leaf springs are arranged between the return wheel and the ratchet pawl, and the return wheel is fixedly arranged on a motor output shaft. The automobile parking locking mechanism has the characteristics that the torque transmission distance is short, the operation is flexible and reliable, the parts are less, and the internal arrangement of a speed changer is convenient. The technical problem that the ratchet pawl cannot be easily pulled out from a ratchet wheel groove during the upper and lower ramp parking is solved, and the parking reliability and the starting reliability after the parking are enhanced.
Description
Technical field
The utility model relates to a kind of automobile parking lockable mechanism, belongs to vehicle transmission gear technical field.
Background technique
At present, it is manually to be operated and hung the shelves into " P " by driver that Automotives Equipped Automatic Transmissions is realized parking, by the motion of mechanical component, drives the action of pawl ratchet lockable mechanism by parking gear locking.As shown in Figure 1, this parking locking mechanism comprises parking rocking arm 1, Compress Spring 7, back shaft 2, ratchet 3, torsion spring 6, ratchet 4 and parking pressing plate 5, when driver controls 1 rotation of parking rocking arm by parking brake operating device, parking rocking arm 1 promotes parking pressing plate 5 by Compress Spring 7, parking pressing plate 5 drives ratchet 3 actions, ratchet 3 overcomes the elastic force of torsion spring 6 around back shaft 2 rotations, if ratchet finally snaps in ratchet slot, parking gear is by locking; If ratchet finally can not snap in ratchet slot, now parking rocker arm assembly 1 is pressed on ratchet on the gear teeth of ratchet 4 by Compress Spring 1-1, once vehicle is moved, parking gear drives ratchet 4 to rotate, and ratchet 3 just snaps in ratchet slot parking gear locking.Above-mentioned automobile parking lockable mechanism is distant because of torque transmitting, and operating reliability is poor, is prone to mechanical failure, causes maintenance cost higher, and customer satisfaction is lower; Simultaneously this parking locking mechanism also exist amount of parts many, take up room large, be unfavorable for the defects such as speed changer internal placement; In addition, owing to lacking locking limit element in above-mentioned automobile parking lockable mechanism, when storing cycle is in up and down ramp, there will be ratchet 4 the stuck situation of ratchet 3, while therefore discharging parking brake, need force ratchet 3 to be extracted from ratchet slot, can cause like this damage of ratchet 3.
Model utility content
The purpose of this utility model is the drawback for prior art, provides that a kind of torque transmitting distance is short, flexible operation is reliable, amount of parts is few, is convenient to the automobile parking lockable mechanism of speed changer internal placement.
Problem described in the utility model realizes with following technical proposals:
A kind of automobile parking lockable mechanism, it comprises ratchet, pawl assembly, return wheel and motor, described ratchet is arranged on the parking gear axle of vehicle, described pawl assembly is provided with ratchet enforcement division and ratchet drive portion, described ratchet enforcement division is mated with ratchet, described ratchet drive portion and return wheel are equipped, between return wheel and ratchet drive portion, one group of return sheet spring are set, and described return wheel is fixed on motor output shaft.
Above-mentioned automobile parking lockable mechanism, described ratchet drive portion is disc structure, on disk, be provided with center hole, pawl assembly assembles by described center hole and the pawl installation axle being fixed on case of transmission, on ratchet drive portion lower end surface, be provided with ratchet drive portion annular recess, in described ratchet drive portion annular recess, be provided with one group of postive stop baffle, described postive stop baffle is radial and is evenly arranged, and they mate with return wheel.
Above-mentioned automobile parking lockable mechanism, described return wheel upper-end surface is provided with return wheel annular recess, in described return wheel annular recess, be provided with one group of limited post and drive post, described limited post mates with the postive stop baffle of ratchet drive portion, and described drive post is mated with return sheet spring.
Above-mentioned automobile parking lockable mechanism, described return sheet spring is " S " type structure, and they are sleeved on tilt state in the drive post of return wheel, and its one end is fixed on return wheel annular recess outer side wall, and the other end is fixed on the external cylindrical surface of ratchet drive portion.
Above-mentioned automobile parking lockable mechanism, described motor is stepper motor.
The utility model is by the fixing assembling of return wheel and motor output shaft, by motor, drive return wheel to rotate, by the drive post being arranged in the return wheel annular recess of return wheel upper-end surface, compress return sheet spring again, and then drive pawl assembly to rotate, when inserting ratchet slot, ratchet enforcement division realizes parking, if ratchet enforcement division is not finally inserted in ratchet slot, and while withstanding on the gear teeth of ratchet, under return sheet spring elastic reaction, the gear teeth of ratchet enforcement division and ratchet keep flexible impaction state, can not damage halting mechanism, once vehicle is moved, parking gear drives ratchet to rotate, ratchet enforcement division just snaps in ratchet slot parking gear locking.Vehicle, when starting, is removed parking brake latch functions, and drive post can be strained gradually return sheet spring and then drive pawl assembly revolution, realizes startup when ratchet enforcement division is left ratchet slot; If while starting after vehicle stops in up and down ramp, limited post can prop up the postive stop baffle of ratchet drive portion, ratchet enforcement division can be extracted smoothly from ratchet slot, has avoided because forcing that ratchet enforcement division is extracted to the damage that causes pawl assembly from ratchet slot.In a word, the utlity model has that torque transmitting distance is short, flexible operation is reliable, amount of parts is few, be convenient to the feature of speed changer internal placement, solved and be difficult to technical barrier that ratchet enforcement division is normally extracted from ratchet slot after up and down ramp parking, strengthened the reliability starting after parking and parking.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is existing parking locking mechanism schematic diagram;
Fig. 2 is main sectional view of the present utility model;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is ratchet assembly schematic diagram;
Fig. 5 is return wheel schematic diagram;
Fig. 6～Figure 11 is the utility model working procedure schematic diagram.
In figure, each list of reference numerals is: 1, parking rocking arm, 2, back shaft, 3, ratchet, 4, ratchet, 5, parking pressing plate, 6, torsion spring, 7, Compress Spring, 8, motor, 8-1, motor output shaft, 9, return wheel, 9-1, drive post, 9-2, limited post, 9-3, return wheel annular recess, 10, pawl assembly, 10-1, ratchet drive portion, 10-1-1, postive stop baffle, 10-1-2, center hole, 10-1-3, ratchet drive portion annular recess, 10-2, ratchet enforcement division, 11, return sheet spring, 12, ratchet assembly installation shaft, 13, parking gear axle.
Embodiment
Referring to Fig. 2, Fig. 3, the utility model comprises ratchet 4, pawl assembly 10, return wheel 9 and motor 8, described ratchet 4 be arranged on the parking gear axle 13 of vehicle, described pawl assembly 10 is provided with ratchet enforcement division 10-2 and ratchet drive portion 10-1, described ratchet enforcement division 10-2 mates with ratchet 4, described ratchet drive portion 10-1 and return wheel 9 are equipped, between return wheel 9 and ratchet drive portion 10-1, one group of return sheet spring 11 are set, and described return wheel 9 is fixed on motor output shaft 8-1.
Referring to Fig. 4, ratchet drive portion 10-1 of the present utility model is disc structure, on disk, be provided with center hole 10-1-2, pawl assembly 10 is by described center hole 10-1-2 and pawl installation axle 12 assemblings that are fixed on case of transmission, in ratchet drive portion 10-1 lower end surface, be provided with ratchet drive portion annular recess 10-1-3, in described ratchet drive portion annular recess 10-1-3, be provided with one group of postive stop baffle 10-1-1, described postive stop baffle 10-1-1 is radial and is evenly arranged, in the present embodiment, postive stop baffle 10-1-1 quantity is four, and they mate with return wheel 9.
Referring to Fig. 5, return of the present utility model is taken turns 9 upper-end surfaces and is provided with return wheel annular recess 9-3, in described return wheel annular recess 9-3, be provided with one group of limited post 9-2 and drive post 9-1, described limited post 9-2 mates with the postive stop baffle 10-1-1 of ratchet drive portion, described drive post 9-1 mates with return sheet spring 11, in the present embodiment, the quantity of drive post 9-1 and limited post 9-2 is four.
Referring to Fig. 3, " S " type structure that described return sheet spring 11 of the present utility model is, in the present embodiment, the quantity of return sheet spring 11 is four, they are sleeved on the drive post 9-1 of return wheel 9 with tilt state, its one end is fixed on the outer side wall of return wheel annular recess 9-3, and the other end is fixed on the external cylindrical surface of ratchet drive portion 10-1.
Referring to Fig. 6～Figure 11, the utility model is by return wheel 9 and the fixing assembling of motor output shaft 8-1, its working procedure is: when driver moves by parking control fingertip control motor 8, motor output shaft 8-1 drives return wheel 9 to rotate (Fig. 6), by being arranged on return, take turns the drive post 9-1 compression return sheet spring 11(Fig. 7 in 9 upper-end surface return wheel annular recess 9-3 again), and then drive pawl assembly 10 to rotate (Fig. 8), after stepper motor 8 stops operating, when ratchet enforcement division 10-2 inserts in ratchet slot under the 11 elastic force effects of return sheet spring, realize parking (Fig. 9), if ratchet enforcement division 10-2 does not finally insert in ratchet slot, and while withstanding on the gear teeth of ratchet 4, under return sheet spring 11 elastic reactions, the gear teeth of ratchet enforcement division 10-2 and ratchet 4 keep flexible impaction state (Figure 10), can not damage halting mechanism, once vehicle is moved, parking gear drives ratchet 4 to rotate, ratchet enforcement division 10-1 just snaps in ratchet slot parking gear locking (Figure 11).Vehicle, when starting, is removed parking brake latch functions, and the drive post 9-1 of return wheel 9 can strain gradually return sheet spring 11 and then drive pawl assembly 10 revolutions, realizes startup when ratchet enforcement division 10-2 leaves ratchet slot; If while running into up and down ramp parking, limited post 9-2 can prop up the postive stop baffle 10-1-1 of ratchet drive portion 10-1, ratchet enforcement division 10-2 can extract smoothly from ratchet slot, has avoided because forcing that ratchet enforcement division 10-2 is extracted to the damage that causes pawl assembly 10 from ratchet slot.
Claims (5)
1. an automobile parking lockable mechanism, it is characterized in that, it comprises ratchet (4), pawl assembly (10), return wheel (9) and motor (8), described ratchet (4) is arranged on the parking gear axle (13) of vehicle, described pawl assembly (10) is provided with ratchet enforcement division (10-2) and ratchet drive portion (10-1), described ratchet enforcement division (10-2) is mated with ratchet (4), described ratchet drive portion (10-1) is equipped with return wheel (9), between return wheel (9) and ratchet drive portion (10-1), one group of return sheet spring (11) is set, described return wheel (9) is fixed on motor output shaft (8-1).
2. a kind of automobile parking lockable mechanism according to claim 1, it is characterized in that, described ratchet drive portion (10-1) is disc structure, on disk, be provided with center hole (10-1-2), pawl assembly (10) is by described center hole (10-1-2) and pawl installation axle (12) assembling being fixed on case of transmission, on ratchet drive portion (10-1) lower end surface, be provided with ratchet drive portion annular recess (10-1-3), in described ratchet drive portion annular recess (10-1-3), be provided with one group of postive stop baffle (10-1-1), described postive stop baffle (10-1-1) is radial and is evenly arranged, they mate with return wheel (9).
3. a kind of automobile parking lockable mechanism according to claim 1 and 2, it is characterized in that, described return wheel (9) upper-end surface is provided with return wheel annular recess (9-3), in described return wheel annular recess (9-3), be provided with one group of limited post (9-2) and drive post (9-1), described limited post (9-2) mates with the postive stop baffle (10-1-1) of ratchet drive portion, and described drive post (9-1) is mated with return sheet spring (11).
4. a kind of automobile parking lockable mechanism according to claim 1 and 2, it is characterized in that, " S " type structure that described return sheet spring (11) is, they are sleeved in the drive post (9-1) of return wheel (9) with tilt state, its one end is fixed on return wheel annular recess (9-3) outer side wall, and the other end is fixed on the external cylindrical surface of ratchet drive portion (10-1).
5. a kind of automobile parking lockable mechanism according to claim 1 and 2, is characterized in that, described motor (8) is stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533441.9U CN203500449U (en) | 2013-08-30 | 2013-08-30 | Automobile parking locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533441.9U CN203500449U (en) | 2013-08-30 | 2013-08-30 | Automobile parking locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500449U true CN203500449U (en) | 2014-03-26 |
Family
ID=50331429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320533441.9U Expired - Fee Related CN203500449U (en) | 2013-08-30 | 2013-08-30 | Automobile parking locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500449U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534084A (en) * | 2014-11-11 | 2015-04-22 | 奇瑞汽车股份有限公司 | Electronic parking mechanism in electric automobile speed reducer |
| CN105546110A (en) * | 2016-01-15 | 2016-05-04 | 重庆长安汽车股份有限公司 | Parking mechanism |
| CN105840820A (en) * | 2016-05-24 | 2016-08-10 | 重庆海本液压机械制造有限公司 | Parking locking device used in vehicle transmission and transmission utilizing same |
| CN106838305A (en) * | 2017-03-20 | 2017-06-13 | 河北工业大学 | A kind of halting mechanism of automatic transmission |
| CN109927544A (en) * | 2019-04-22 | 2019-06-25 | 湖北科技学院 | A kind of irreversible coaxial gear set in vehicle drive system |
| CN110686077A (en) * | 2019-10-29 | 2020-01-14 | 重庆青山工业有限责任公司 | Automobile transmission parking mechanism |
| CN115123168A (en) * | 2022-06-30 | 2022-09-30 | 上海凯众材料科技股份有限公司 | Electromechanical brake locking mechanism and use method thereof |
-
2013
- 2013-08-30 CN CN201320533441.9U patent/CN203500449U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534084A (en) * | 2014-11-11 | 2015-04-22 | 奇瑞汽车股份有限公司 | Electronic parking mechanism in electric automobile speed reducer |
| CN105546110A (en) * | 2016-01-15 | 2016-05-04 | 重庆长安汽车股份有限公司 | Parking mechanism |
| CN105840820A (en) * | 2016-05-24 | 2016-08-10 | 重庆海本液压机械制造有限公司 | Parking locking device used in vehicle transmission and transmission utilizing same |
| CN106838305A (en) * | 2017-03-20 | 2017-06-13 | 河北工业大学 | A kind of halting mechanism of automatic transmission |
| CN109927544A (en) * | 2019-04-22 | 2019-06-25 | 湖北科技学院 | A kind of irreversible coaxial gear set in vehicle drive system |
| CN109927544B (en) * | 2019-04-22 | 2024-04-26 | 湖北科技学院 | Irreversible coaxial transmission mechanism in vehicle transmission system |
| CN110686077A (en) * | 2019-10-29 | 2020-01-14 | 重庆青山工业有限责任公司 | Automobile transmission parking mechanism |
| CN115123168A (en) * | 2022-06-30 | 2022-09-30 | 上海凯众材料科技股份有限公司 | Electromechanical brake locking mechanism and use method thereof |
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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: 20140326 Termination date: 20210830 |