CN110259942A - A kind of parking device for automatic transmission - Google Patents
A kind of parking device for automatic transmission Download PDFInfo
- Publication number
- CN110259942A CN110259942A CN201910469183.4A CN201910469183A CN110259942A CN 110259942 A CN110259942 A CN 110259942A CN 201910469183 A CN201910469183 A CN 201910469183A CN 110259942 A CN110259942 A CN 110259942A
- Authority
- CN
- China
- Prior art keywords
- parking
- parking lock
- valve
- locking
- return spring
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
Abstract
The present invention relates to a kind of parking devices for automatic transmission, and solving the problems, such as current halting mechanism, structure is complicated, volume is larger, processing technology is complicated.The parking device includes driving mechanism, shift cross bar, cam, parking lock valve cylinder, parking locking-valve, parking lock guide sleeve, the first return spring and the second return spring and parking wheel；Shift cross bar is fixedly connected with cam, driving mechanism driving shift cross bar rotation, so that cam be driven to rotate；Parking lock valve cylinder is located at below cam, and is arranged in parking lock guide sleeve, and parking lock guide sleeve and gear box casing are fixedly installed；Parking locking-valve is arranged in parking lock valve cylinder, and the first return spring is equipped between the cylinder top of top and parking lock valve cylinder, and the second return spring is sleeved on parking locking-valve, and the limited block by being arranged in parking lock guide sleeve limits；Parking lock guide sleeve is stretched out in the lower end of parking locking-valve, may be inserted between the tooth socket of parking wheel and realizes parking.
Description
Technical field
The present invention relates to automatic gearboxes, and in particular to a kind of parking device for automatic transmission.
Background technique
With the continuous improvement of living standards, the popularity rate of automobile is also increasing year by year, and it is indispensable that automobile becomes trip
The vehicles, in order to pursue the comfort of trip, the technology of automatic transmission is also being continuously improved.Gearbox parking is automatic
One key technology of gearbox, for automatic transmission, gearbox parking function is may be implemented when hanging over P gear in driver
Energy.
Parking function needs a series of mechanism to ensure its normal operation, wherein driving device oppresses parking in P gear
Pawl moves, to make the protrusion in park pawl be stuck between the tooth socket of parking wheel, to realize parking function.But
Park pawl structure is complex, volume is larger, processing technology is complicated, is installing, and halting mechanism occupies biggish space,
So that the structure of gearbox is become larger, is unfavorable for carrying out the light-weighted design of speed changer.
Summary of the invention
Present invention aim to address the current halting mechanism problems that structure is complicated, volume is larger, processing technology is complicated, mention
For a kind of parking device for automatic transmission, which can effectively mitigate the weight of parking device, and can save
Space simplifies procedure of processing.
Technical scheme is as follows:
A kind of parking device for automatic transmission, including driving mechanism, shift cross bar, cam, parking lock valve cylinder, stay
Lock valve, parking lock guide sleeve, the first return spring and the second return spring and parking wheel；The shift cross bar is fixed with cam
Connection, the driving mechanism driving shift cross bar rotation, so that cam be driven to rotate；The parking lock valve cylinder is located under cam
Side, and be arranged in parking lock guide sleeve, the parking lock guide sleeve and gear box casing are fixedly installed；The parking locking-valve is set
It sets in parking lock valve cylinder, the first return spring, second return is installed between the cylinder top of top and parking lock valve cylinder
Spring pocket is on parking locking-valve, and the limited block by being arranged in parking lock guide sleeve limits；Under the parking locking-valve
Parking lock guide sleeve is stretched out at end, may be inserted between the tooth socket of parking wheel and realizes parking.
Further, the outer wall of the parking lock valve cylinder is provided with strip groove, is provided with guiding on the parking lock guide sleeve
Hole, guide pin pass through strip groove and pilot hole, for realizing parking lock guide sleeve and parking lock valve cylinder along axial relative motion.
Further, the upper end of the parking locking-valve is equipped with notch, for balancing the inside and outside pressure of parking lock valve cylinder.
Further, the parking locking-valve is T-shaped cylindrical structure, including limited post and guide post, the limited post
Diameter is greater than the diameter of guide post, and first return spring is located on limited post between top surface and the cylinder top of parking lock valve cylinder,
Second return spring is sleeved in guide post.
Further, the shift cross bar is cylindrical bar, the axis coaxle setting of axis and cam.
Further, the driving mechanism is shift motor, gear-shifting rocker arm or hydraulic cylinder.
Compared with prior art, the invention has the following advantages:
Compared with common halting mechanism, the present invention can greatly simplify parking under the premise of realizing parking function
The complexity of device, all mechanisms can be arranged within the smaller space of gearbox radial direction, be not take up axial inside speed changer
Speed changer height can be effectively reduced in space, increases versatility.Further, since the design of part of parking device is simple in the present invention
Single, small volume, therefore saved cost.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the parking device of automatic transmission；
Fig. 2 is that the present invention is used for status diagram of the parking device of automatic transmission when P is kept off；
Fig. 3 is that the present invention is used for status diagram of the parking device of automatic transmission when non-P is kept off；
Fig. 4 is structural schematic diagram of the present invention for parking locking-valve in the parking device of automatic transmission；
Fig. 5 is structural schematic diagram of the present invention for parking lock guide sleeve in the parking device of automatic transmission.
Appended drawing reference: 1- shift cross bar, 2- cam, 3- parking lock valve cylinder, 4- parking locking-valve, 5- parking lock guide sleeve, 6-
First return spring, the second return spring of 7-, 8- parking wheel, 9- guide pin, 10- driving mechanism, the cylinder of 31- parking lock valve cylinder
Top, 32- parking lock valve cylinder top surface, 33- strip groove, 34- parking lock valve cylinder lower end surface, 41- limited post, 42- limited post lower end surface,
43- guide post, 44- notch, 51- limited block, 52- pilot hole.
Specific embodiment
In conjunction with attached drawing, more detailed explanation is done for a specific embodiment of the invention.
The present invention discloses a kind of parking device for automatic transmission, solves setting for current halting mechanism bulky complex
Parking can be realized using simple driving principle in meter, the device, and processing is very simple with manufacturing method, to reduce speed change
The manufacturing cost of case and the inner space for saving gearbox.Its principle is: under P grades of states, the rotation of cam 2 to corresponding positions
It sets, cam 2 and 3 generation of parking lock valve cylinder act on, and parking lock valve cylinder 3 moves in parking lock guide sleeve 5, while parking lock valve cylinder
Power is transferred to parking locking-valve 4 by the first return spring 6 and the active force of the second return spring 7 is overcome to move parking locking-valve 4 by 3
It is dynamic, it enters 4 lower end card insertion of parking locking-valve between the tooth socket of wheel 8, realizes parking function, in non-P gear, under parking locking-valve 4
End will not be in contact with parking wheel 8.The present invention greatly simplifies the complexity of halting mechanism, simplified manufacturing procedure,
Assembly process is simplified, and effectively makes gearbox loss of weight, save the cost.
It as shown in Figures 1 to 5, include driving mechanism 10, shift cross bar 1, cam for the parking device of automatic transmission
2, parking lock valve cylinder 3, parking locking-valve 4, parking lock guide sleeve 5, the first return spring 6 and the second return spring 7, parking wheel 8 with
Guide pin 9.
Concretely cylindrical bar or other rod pieces, the power resources for cross bar 1 of shifting gears, should in driving mechanism 10 for shift cross bar 1
Driving mechanism 10 can be, but not limited to be the mechanisms such as shift motor, gear-shifting rocker arm, hydraulic cylinder, the axial location phase for cross bar 1 of shifting gears
The position of entire speed changer is fixed, shift cross bar 1 can rotate under the driving of driving mechanism 10 around central shaft.
Cam 2 is the revolving part with curved profile, its own is with rotary shaft, and cam 2 is fixedly connected with shift cross bar 1, and cam 2
Axis and shift cross bar 1 axis on the same line, cam 2 is driven by shift cross bar 1, may be implemented with shift cross bar
1 synchronous rotation.Cam 2 curved profile needs be designed, it is to be ensured that non-P gear and other mechanisms of speed changer it is normal
When running, cam 2, which can not be such that parking locking-valve 4 is caught between the tooth socket of parking wheel 8 effect of parking lock valve cylinder 3, to be caused to stay
Vehicle only can be such that parking function realizes when gear is switched to P gear.
Parking lock valve cylinder 3 is the cylinder thin-wall construction for being drilled with cylindrical hole from below, and parking lock valve cylinder 3 is located at cam 2
Lower section, and be arranged in parking lock guide sleeve 5.At P grades, parking lock valve cylinder top surface 32 is contacted with the side of cam 2, in cam
Under the compressing of 2 sides, it can be slided along 5 inner wall of parking lock guide sleeve, i.e., parking lock valve cylinder 3 is limited in parking lock guide sleeve 5
Inside axially move.
Parking lock guide sleeve 5 and case of transmission are integrated casting, by processing inner hole.Parking lock valve cylinder 3
Moving in axial direction can occur along 5 inner surface of parking lock guide sleeve in parking lock guide sleeve 5.The outer wall of parking lock valve cylinder 3
It is provided with the strip groove 33 along the direction of motion, pilot hole 52 is provided on parking lock guide sleeve 5, guide pin 9 protrudes within pilot hole 52,
Guide pin 9 also protrudes within strip groove 33 simultaneously, realize parking lock guide sleeve 5 and parking lock valve cylinder 3 along axial opposite fortune
It is dynamic, but guide pin 9 is not fixed with the strip groove 33 of parking lock valve cylinder, can not also influence parking lock valve cylinder 3 in P gear and keep off it with non-P
Between movement.Meanwhile guide pin 9 can also realize to the position of parking lock valve cylinder 3 and limit that parking device can prevent when assembling
Parking lock valve cylinder 3 falls off.
Parking locking-valve 4 is arranged in parking lock valve cylinder 3, is T shape cylindrical structure, including limited post 41 and guide post 43, limit
The diameter of position column 41 is greater than the diameter of guide post 43, is equipped with the first return between limited post 41 and the cylinder top 31 of parking lock valve cylinder
Spring 6, the first return spring 6 can be such that parking lock valve cylinder 3 is jacked up under non-P gear state, when installation, it is ensured that parking lock valve cylinder
Cylinder top 31 (limited post top surface) be in contact with the first return spring 6, it is ensured that it is jacked up when non-P is kept off.That is, limit
Capital face is contacted with the first return spring 6, it is ensured that it generates movement under the active force of the first return spring 6.Second return bullet
Spring 7 is sleeved in guide post 43, and the limited block 51 by being arranged in parking lock guide sleeve 5 limits, during installation, second time
One end of position spring 7 is in contact with limited post lower end surface 42, and the other end is in contact with 51 upper surface of limited block, keeps off state in non-P
Under parking locking-valve 4 can be jacked up, cancel parked state.The movement of parking locking-valve 4 is limited in parking lock valve cylinder 3, can be with
It is axially moved, in P gear, the lower end of guide post 43 can stretch out the bottom of parking lock guide sleeve 5, may be inserted into parking wheel
Between 8 tooth socket, 8 locking of parking wheel is realized.Since the output shaft of parking wheel 8 and speed changer is rigidly connected, when 8 locking of parking wheel
When, therefore the output shaft of speed changer is also exported without revolving speed, to realize parking function.
4 upper end of parking locking-valve is equipped with notch 44, can separate parking lock valve cylinder 3 by limited post 41 two of this notch 44
Chamber is connected to, and the strip groove 33 on parking lock valve cylinder 3 is also connected to outside, in this way it is prevented that 3 upper and lower cavities of parking lock valve cylinder
The intracavitary product formed has oil liquid, oil liquid can be made to be discharged in time, prevents it from influencing the movement of component.
When speed changer is in non-P gear, the state that parking device is in is: the second return spring 7 pushes up parking locking-valve 4
It rises, 4 lower end of parking locking-valve will not influence the rotation of parking wheel 8, but 4 lower end of parking locking-valve will not be detached from parking lock guide sleeve 5
The limitation of bottom.The first return spring 6 on parking locking-valve 4 jacks up parking lock valve cylinder 3, parking lock valve cylinder top surface 32 with
The contact of 2 side of cam.
When speed changer is switched to P gear by non-P gear, shift cross bar 1 is rotated, and rotates to synchronize with moving cam 2, convex
It takes turns in 2 sides and is contacted from the farther away flank of cam of cam rotating shaft line with parking lock valve cylinder top surface 32, force 3 court of parking lock valve cylinder
Direction far from cam rotating shaft is mobile, and the movement of parking lock valve cylinder 3 forces the first return spring 6 to occur further to compress,
The elastic force of first return spring 6 acts on parking locking-valve 4, keeps parking locking-valve 4 mobile towards the direction far from cam rotating shaft,
The lower part of parking lock guide sleeve 5 is stretched out in 4 lower end of parking locking-valve, is stuck between the tooth socket of parking wheel 8, realizes parking function.At this moment,
Parking locking-valve 4 can be stuck in just between the tooth socket of parking wheel 8.
In the case of being converted to P gear by non-P gear, 4 lower end of parking locking-valve cannot be stuck in the tooth socket of parking wheel 8 just
Between, but touch the situation of the tooth top of parking wheel 8.In this case, P gear has made the rotation of cam 2 to corresponding position, compels
Keep parking lock valve cylinder 3 mobile towards the direction far from cam rotating shaft, the first return spring 6 compresses, but due to parking lock
Lower end and 8 peak contact of parking wheel cause parking locking-valve 4 compared to lesser displacement only occurs under normal conditions, at this point, by
It is limited in parking locking-valve 4, the first return spring 6 can be compared to can have bigger decrement usually.But in this state,
Parking device does not play the role of locking parking wheel 8, but when vehicle receives disturbance, vehicle can be moved, parking wheel 8
It can rotate.When parking wheel 8 rotates to, and 4 lower end of parking locking-valve is allow to continue to move down, parking locking-valve 4 will be in the first return bullet
Under the spring force of spring 6, move down parking locking-valve 4,4 lower end of parking locking-valve will be stuck between the tooth socket of parking wheel 8, and realization is stayed
Vehicle function.
Among the realization process of entire parking function, there are following points for attention:
Non- P gear in the case where, it is to be ensured that parking lock valve cylinder 3 under the spring-force driven dual of the first return spring 6 with cam 2
Contact, must not be directed to pin 9 influences the contact of the two；Parking lock valve cylinder 3, which will be parked, to be locked guide sleeve 5 and is surrounded, i.e. parking lock
Valve cylinder 3 must not be detached from parking lock guide sleeve 5；The locking-valve cylinder 3 that be parked of parking locking-valve 4 is surrounded, i.e., parking locking-valve 4 must not be detached from
Parking lock valve cylinder 3；4 lower end of parking locking-valve must not be detached from parking lock guide sleeve, and 4 lower end of parking locking-valve must not be contacted with parking wheel 8.
In P gear, it is to be ensured that parking lock valve cylinder lower end surface 34 must not be in contact with 5 bottom surface of parking lock guide sleeve, to prevent convex
Wheel 2 can not be rotated to specified position.
In P gear and 4 lower end of parking locking-valve and 8 peak contact of parking wheel, it is to be ensured that the first return spring 6 does not reach pressure
And state, and within its reasonable decrement section.When P is kept off and 4 lower end of parking locking-valve is stuck between 8 tooth socket of parking wheel,
Second return spring 7 does not reach pressure and state, and within its reasonable decrement section, parking locking-valve 4 must not be detached from and stay
Lock valve cylinder 3,4 lower end of parking locking-valve have to stretch out outside parking lock guide sleeve 5, be stuck between the tooth socket of parking wheel 8, realization is stayed
Vehicle function.
Claims (8)
1. a kind of parking device for automatic transmission, it is characterised in that: including driving mechanism (10), shift gears cross bar (1), convex
Take turns (2), parking lock valve cylinder (3), parking locking-valve (4), parking lock guide sleeve (5), the first return spring (6) and the second return spring
(7) and parking wheel (8)；
The shift cross bar (1) is fixedly connected with cam (2), driving mechanism (10) driving shift cross bar (1) rotation, thus
Drive cam (2) rotation；
The parking lock valve cylinder (3) is located at below cam (2), and is arranged in parking lock guide sleeve (5), the parking lock guiding
It covers (5) and gear box casing is fixedly installed；
Parking locking-valve (4) setting is installed between the cylinder top (31) of top and parking lock valve cylinder in parking lock valve cylinder (3)
Have the first return spring (6), second return spring (7) is sleeved on parking locking-valve (4), and is led by being arranged in parking lock
Limited block (51) limit into set (5)；Parking lock guide sleeve (5) are stretched out in the lower end of the parking locking-valve (4), may be inserted into and stay
Parking is realized between the tooth socket of wheel (8).
2. the parking device according to claim 1 for automatic transmission, it is characterised in that: the parking lock valve cylinder
(3) outer wall is provided with strip groove (33), is provided with pilot hole (52) on the parking lock guide sleeve (5), and guide pin (9) passes through item
Shape slot (33) and pilot hole (52), for realizing parking lock guide sleeve (5) and parking lock valve cylinder (3) along axial relative motion.
3. the parking device according to claim 2 for automatic transmission, it is characterised in that: the parking locking-valve (4)
Upper end be equipped with notch (44), for balancing the inside and outside pressure of parking lock valve cylinder (3).
4. the parking device according to claim 1 or 2 or 3 for automatic transmission, it is characterised in that: the parking lock
Valve (4) is T-shaped cylindrical structure, including limited post (41) and guide post (43), and the diameter of the limited post (41) is greater than guiding
The diameter of column (43), first return spring (6) be located at top surface and parking lock valve cylinder on limited post (41) cylinder top (31) it
Between, second return spring (7) is sleeved on guide post (43).
5. the parking device according to claim 4 for automatic transmission, it is characterised in that: the shift cross bar (1)
For cylindrical bar, the axis coaxle of axis and cam (2) is arranged.
6. the parking device according to claim 5 for automatic transmission, it is characterised in that: the driving mechanism (10)
For shift motor.
7. the parking device according to claim 5 for automatic transmission, it is characterised in that: the driving mechanism (10)
For gear-shifting rocker arm.
8. the parking device according to claim 5 for automatic transmission, it is characterised in that: the driving mechanism (10)
For hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469183.4A CN110259942B (en) | 2019-05-31 | 2019-05-31 | Parking device for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469183.4A CN110259942B (en) | 2019-05-31 | 2019-05-31 | Parking device for automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110259942A true CN110259942A (en) | 2019-09-20 |
| CN110259942B CN110259942B (en) | 2021-07-23 |
Family
ID=67916345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910469183.4A Active CN110259942B (en) | 2019-05-31 | 2019-05-31 | Parking device for automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259942B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242745A (en) * | 2019-05-31 | 2019-09-17 | 陕西法士特齿轮有限责任公司 | A kind of automatic transmission stopping mechanism |
| DE102021204930A1 (en) | 2021-05-17 | 2022-11-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | parking lock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809424A1 (en) * | 1998-03-05 | 1999-09-09 | Volkswagen Ag | Locking device for a transmission |
| KR20070063158A (en) * | 2005-12-14 | 2007-06-19 | 현대자동차주식회사 | A parking device for automatic transmission |
| CN205559765U (en) * | 2016-05-10 | 2016-09-07 | 王立尧 | Electrodynamic type parking mechanism |
| CN207393932U (en) * | 2017-09-30 | 2018-05-22 | 科力远混合动力技术有限公司 | Electronic brake mechanism |
| CN108468801A (en) * | 2018-03-21 | 2018-08-31 | 北京新能源汽车股份有限公司 | Halting mechanism |
| CN109476283A (en) * | 2016-06-16 | 2019-03-15 | 法雷奥西门子新能源汽车(德国)有限公司 | Parking brake and operating method |
-
2019
- 2019-05-31 CN CN201910469183.4A patent/CN110259942B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809424A1 (en) * | 1998-03-05 | 1999-09-09 | Volkswagen Ag | Locking device for a transmission |
| KR20070063158A (en) * | 2005-12-14 | 2007-06-19 | 현대자동차주식회사 | A parking device for automatic transmission |
| CN205559765U (en) * | 2016-05-10 | 2016-09-07 | 王立尧 | Electrodynamic type parking mechanism |
| CN109476283A (en) * | 2016-06-16 | 2019-03-15 | 法雷奥西门子新能源汽车(德国)有限公司 | Parking brake and operating method |
| CN207393932U (en) * | 2017-09-30 | 2018-05-22 | 科力远混合动力技术有限公司 | Electronic brake mechanism |
| CN108468801A (en) * | 2018-03-21 | 2018-08-31 | 北京新能源汽车股份有限公司 | Halting mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242745A (en) * | 2019-05-31 | 2019-09-17 | 陕西法士特齿轮有限责任公司 | A kind of automatic transmission stopping mechanism |
| CN110242745B (en) * | 2019-05-31 | 2024-02-06 | 陕西法士特齿轮有限责任公司 | Automatic transmission parking mechanism |
| DE102021204930A1 (en) | 2021-05-17 | 2022-11-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | parking lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110259942B (en) | 2021-07-23 |
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