CN203717893U - Parking mechanism for automatic transmission - Google Patents
Parking mechanism for automatic transmission Download PDFInfo
- Publication number
- CN203717893U CN203717893U CN201420059826.0U CN201420059826U CN203717893U CN 203717893 U CN203717893 U CN 203717893U CN 201420059826 U CN201420059826 U CN 201420059826U CN 203717893 U CN203717893 U CN 203717893U
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- Prior art keywords
- parking
- push rod
- automatic transmission
- parking mechanism
- transmission box
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 12
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model provides a parking mechanism for an automatic transmission. The parking mechanism comprises a pull rod assembly, a parking pawl and a parking ratchet, wherein the pull rod assembly comprises a pull rod and an execution pin, the parking pawl sleeves a pawl pin, and the parking ratchet is in fastened connection with an output shaft of the transmission. The parking mechanism is characterized by also comprising a hydraulic execution mechanism connected with the pull rod assembly, and the hydraulic execution mechanism is used for driving the execution pin in the pull rod assembly to retreat so as to separate the parking pawl from the parking ratchet when an engine is started and for driving the execution pin in the pull rod assembly to push the parking pawl to be meshed with the parking ratchet when the engine flames out. The parking mechanism has the advantages that a traditional manual execution mechanism in the parking mechanism is omitted, and automatic parking and automatic unlocking after parking of a car are realized by adopting a hydraulic control manner, so that the operation actions of a driver are effectively reduced, and the operation comfort of the car is improved.
Description
Technical field
The utility model relates to automatic gearbox of vehicles technical field, is specifically related to a kind of automatic transmission box parking mechanism.
Background technique
The function of halting mechanism is to guarantee that vehicle stops reliably or rests against on the ramp of certain slope, prevent that unnecessary rolling from appearring in wheel, special that the output shaft of parking ratchet wheel and gearbox is fixed, then pin the output shaft of gearbox, while preventing vehicle anti-slide or trailer, cause counter dragging, make component impaired.In existing automatic transmission case, halting mechanism is all manually operated, and the transfer route of its power is gear shifting handle → gear shift wire drawing → parking inhaul cable assembly → Rocker arm assembly → push rod assembly → parking ratchet wheel and the engagement of park pawl or separated.
The plan view of existing manual parking mechanism installment state as shown in Figure 1.Fig. 2 is the right elevation of existing manual parking mechanism.Wherein, drag-line ball 1 is fastenedly connected with drag-line plate 2, forms inhaul cable assembly; Pitman arm shaft 3 is fastenedly connected with rocker plate 4, forms Rocker arm assembly; Push rod 5 one end are arranged in rocker plate 4, and the other end is equipped with carries out pin 8, and push rod 5 and execution pin 8 form push rod assembly.As depicted in figs. 1 and 2, parking base 7 is arranged on gear box casing by bolt; Park pawl 9, ratchet base 11 are sleeved in detent pin 10, and wherein ratchet base 11 is arranged on gear box casing; Return spring 13 is sleeved on detent pin 10 and return spring support 12, and the moment of torsion that park pawl 9 and parking ratchet wheel 15 are separated is provided, and wherein parking ratchet wheel 15 is fastenedly connected with output shaft of gear-box.
In existing automatic transmission case, the working principle of manual parking mechanism is: when needs parking, driver's operation gear shifting handle, power on gear shifting handle is through the transfer route of above-mentioned power, make to carry out pin 8 and promote park pawl 9 and parking ratchet wheel 15 engagements, thereby locking transmission output shaft, realizes parking function.When needs are removed parking function, driver's operation gear shifting handle, the power on gear shifting handle, through the transfer route of above-mentioned power, makes to carry out pin 8 and exits park pawl 9, park pawl 9 is separated with parking ratchet wheel 15 under the effect of return spring 13, thereby removes parking function.
Due to existing halting mechanism need driver's manually-operable can realize park pawl with the engagement of parking ratchet wheel with separated, thereby make driver's act of operation more, complicated operation.
Model utility content
The purpose of this utility model is to provide a kind of automatic transmission box parking mechanism, and to solve, the manual parking mechanism of prior art makes driver's act of operation more, the problem of complicated operation.
The utility model provides following technological scheme for achieving the above object:
An automatic transmission box parking mechanism, comprising: push rod assembly, and described push rod assembly comprises push rod and carries out pin; Park pawl, described park pawl is sleeved in detent pin; Parking ratchet wheel, described parking ratchet wheel and output shaft of gear-box are fastenedly connected; It is characterized in that, also comprise: the hydraulic actuator being connected with described push rod assembly, for when the engine start, drive the execution pin in described push rod assembly to exit, make described park pawl separated with parking ratchet wheel; When engine misses, drive the execution pin in described push rod assembly to promote described park pawl and parking ratchet wheel engagement.
Preferably, described hydraulic actuator comprises oil hydraulic cylinder, described oil hydraulic cylinder comprises cylinder body and cylinder cap, in described cylinder body, be provided with piston, described piston is divided into upper and lower two chambers by described inner chamber of cylinder block, in upper chamber, be provided with the thrust spring joining with described piston head, on lower chambers sidewall, be provided with oilhole, one end of described push rod is through the bottom connection of described cylinder cap and described piston.
Preferably, the upper end of described push rod is provided with detection device, for detection of the position of described push rod.
Preferably, described detection device is magnet.
Preferably, described automatic transmission box parking mechanism also comprises L-type fixing frame, and a support arm of described L-type fixing frame is connected with described push rod is vertical, and another support arm of described L-type fixing frame is parallel with described push rod; Described detection device is arranged on described L-type fixing frame.
Preferably, described L-type fixing frame and described push rod removably connect.
Preferably, described L-type fixing frame and the described push rod structure that is formed in one.
Preferably, described automatic transmission box parking mechanism also comprises: be arranged on bottom chamber and be positioned at the oil sealing of cylinder cap top.
Preferably, described automatic transmission box parking mechanism also comprises: return spring, described return spring is sleeved in described detent pin.
The beneficial effects of the utility model are:
Automatic transmission box parking mechanism of the present utility model, cancelled manual actuator traditional in halting mechanism, adopt the mode of hydraulic control to realize automatic unlocking after the automatic parking of automobile and parking, thereby effectively reduced driver's act of operation, improved the operation comfort of automobile.
Accompanying drawing explanation
Fig. 1 is the plan view of existing manual parking mechanism installment state.
Fig. 2 is the right elevation of existing manual parking mechanism.
Fig. 3 is the plan view of the utility model automatic transmission box parking mechanism installment state.
Fig. 4 is the right elevation of the utility model automatic transmission box parking mechanism.
Fig. 5 is the sectional view of actuator in the utility model automatic transmission box parking mechanism.
Mark in accompanying drawing:
1, drag-line ball 2, drag-line plate 3, pitman arm shaft 4, rocker plate 5, push rod
6, guide plate 7, parking base 8, execution pin 9, park pawl 10, detent pin
11, ratchet base 12, return spring support 13, return spring 14, gearshift locating stud
15, parking ratchet wheel 16, oil hydraulic cylinder 17, thrust spring 18, piston 19, oilhole
20, oil sealing 21, magnet
Embodiment
As shown in Figure 3, be the plan view of the utility model automatic transmission box parking mechanism installment state, Fig. 4 is its right elevation, the sectional view of Tu5Shi Qi actuator.
As shown in Figure 3, automatic transmission box parking mechanism of the present utility model, comprises push rod assembly, park pawl 9 and parking ratchet wheel 15.Wherein said push rod assembly comprises push rod 5 and carries out pin 8; Park pawl 9 is sleeved in detent pin 10; Parking ratchet wheel 15 is fastenedly connected with output shaft of gear-box.
Described automatic transmission box parking mechanism also comprises the hydraulic actuator being connected with described push rod assembly, for when the engine start, drives the execution pin 8 in described push rod assembly to exit, and makes park pawl 9 separated with parking ratchet wheel 15; When engine misses, drive the execution pin 8 in described push rod assembly to promote park pawl 9 and parking ratchet wheel 15 engagements.Thereby realized the automatic parking of automobile and the automatic unlocking after parking, and cancelled the actuator in existing manual parking mechanism, as inhaul cable assembly and Rocker arm assembly etc., effectively reduced driver's control action, improved the handling comfort of automobile.
As shown in Figure 5, described hydraulic actuator comprises oil hydraulic cylinder 16, and wherein oil hydraulic cylinder 16 comprises cylinder body and cylinder cap, is provided with piston 18 in described cylinder body, and piston 18 is divided into upper and lower two chambers by described inner chamber of cylinder block.Wherein in upper chamber, be provided with the thrust spring 17 that the top with piston 18 joins, so that after engine misses, promoting piston 18 discharges the hydraulic oil in cylinder body, and drive the execution pin 8 in push rod assembly to promote park pawl 9 and parking ratchet wheel 15 engagements, thereby realize the automatic parking of automobile; On lower chambers sidewall, be provided with oilhole 19; One end of push rod 5 is through the bottom connection of described cylinder cap and piston 18.
Further, as shown in Figure 4 and Figure 5, the upper end of push rod 5 is provided with detection device, and for detection of the position of push rod 5, above-mentioned detection device can be magnet 21.The top of described magnet 21 is provided with wire harness and sensor, is arranged on gear box casing.The P shelves of push rod (parking shelves) position and non-P file location are about 10mm apart, the magnetic field that described sensor can induced magnet, and according to the location positioning push rod 5 of magnet whether in P file location.When engine start, transmission oil pump work, and by oilhole 19 to fuel feeding in the cylinder of oil hydraulic cylinder 16, when push rod 5 being detected in non-P file location, i.e. fuel cut-off, thereby realize the automatic unlocking after parking.After engine misses, oil hydraulic cylinder 16 starts pressure release, when push rod 5 being detected in P file location, stops pressure release, thereby realizes automatic parking.
As shown in Figure 4 and Figure 5, described automatic transmission box parking mechanism also comprises L-type fixing frame, and a support arm of described L-type fixing frame is connected with push rod 5 is vertical, and another support arm is parallel with push rod 5; And above-mentioned detection device is arranged on described L-type fixing frame.Described L-type fixing frame and push rod 5 can be to removably connect, and as socket joint connection, flange connection etc., to this utility model, embodiment does not limit.Described L-type fixing frame and push rod 5 structure that also can be formed in one, is conducive to reduce installation time of L-type fixing frame and push rod 5, is convenient to produce in enormous quantities.
Further, as shown in Figure 5, oil sealing 20 can also be arranged on to the top of the bottom chamber cylinder cap of cylinder body, to guarantee the sealing of oil hydraulic cylinder, prevent the leakage of hydraulic oil.
As shown in Figure 4, described automatic transmission box parking mechanism also comprises the return spring 13 being sleeved in detent pin 10.Its effect is when engine start, and hydraulic oil enters in cylinder body and promotes piston driving execution pin 8 and exits after park pawl 9, provides enough moments of torsion to make park pawl 9 separated with parking ratchet wheel 15, thereby realizes the automatic unlocking after parking.
The above is only preferred implementation of the present utility model, it is to be noted, these embodiments are only not used in restriction scope of the present utility model for the utility model is described, and, after having read content of the present utility model, relevant technical staff in the field can make various changes or modification to the utility model, and these equivalent form of values fall into the application's appended claims limited range equally.
Claims (9)
1. an automatic transmission box parking mechanism, comprising: push rod assembly, and described push rod assembly comprises push rod and carries out pin; Park pawl, described park pawl is sleeved in detent pin; Parking ratchet wheel, described parking ratchet wheel and output shaft of gear-box are fastenedly connected; It is characterized in that, also comprise: the hydraulic actuator being connected with described push rod assembly, for when the engine start, drive the execution pin in described push rod assembly to exit, make described park pawl separated with parking ratchet wheel; When engine misses, drive the execution pin in described push rod assembly to promote described park pawl and parking ratchet wheel engagement.
2. automatic transmission box parking mechanism according to claim 1, it is characterized in that, described hydraulic actuator comprises oil hydraulic cylinder, described oil hydraulic cylinder comprises cylinder body and cylinder cap, in described cylinder body, be provided with piston, described piston is divided into upper and lower two chambers by described inner chamber of cylinder block, is provided with the thrust spring joining with described piston head in upper chamber, on lower chambers sidewall, be provided with oilhole, one end of described push rod is through the bottom connection of described cylinder cap and described piston.
3. automatic transmission box parking mechanism according to claim 2, is characterized in that, the upper end of described push rod is provided with detection device, for detection of the position of described push rod.
4. automatic transmission box parking mechanism according to claim 3, is characterized in that, described detection device is magnet.
5. automatic transmission box parking mechanism according to claim 3, is characterized in that, also comprises L-type fixing frame, and a support arm of described L-type fixing frame is connected with described push rod is vertical, and another support arm of described L-type fixing frame is parallel with described push rod; Described detection device is arranged on described L-type fixing frame.
6. automatic transmission box parking mechanism according to claim 5, is characterized in that, described L-type fixing frame and described push rod removably connect.
7. automatic transmission box parking mechanism according to claim 5, is characterized in that, described L-type fixing frame and the described push rod structure that is formed in one.
8. according to the automatic transmission box parking mechanism described in claim 1 to 7 any one, it is characterized in that, also comprise: be arranged on bottom chamber and be positioned at the oil sealing of cylinder cap top.
9. according to the automatic transmission box parking mechanism described in claim 1 to 7 any one, it is characterized in that, also comprise: return spring, described return spring is sleeved in described detent pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420059826.0U CN203717893U (en) | 2014-02-08 | 2014-02-08 | Parking mechanism for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420059826.0U CN203717893U (en) | 2014-02-08 | 2014-02-08 | Parking mechanism for automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717893U true CN203717893U (en) | 2014-07-16 |
Family
ID=51157046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420059826.0U Expired - Fee Related CN203717893U (en) | 2014-02-08 | 2014-02-08 | Parking mechanism for automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717893U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776220A (en) * | 2015-02-12 | 2015-07-15 | 长城汽车股份有限公司 | Parking mechanism for automatic gearbox and automatic gearbox |
| CN106015562A (en) * | 2016-07-08 | 2016-10-12 | 天津天海同步集团有限公司 | Parking mechanism |
| CN106931161A (en) * | 2015-12-30 | 2017-07-07 | 长城汽车股份有限公司 | A kind of hydraulic pressure halting mechanism and automatic transmission |
| CN107628007A (en) * | 2017-10-30 | 2018-01-26 | 中国第汽车股份有限公司 | Hydraulic pressure automatic parking device |
| CN107989996A (en) * | 2017-12-30 | 2018-05-04 | 盛瑞传动股份有限公司 | Halting mechanism and speed changer |
| CN109282027A (en) * | 2018-12-07 | 2019-01-29 | 安徽江淮汽车集团股份有限公司 | A kind of P grades of executive device and method |
| CN106704584B (en) * | 2015-07-28 | 2019-05-21 | 长城汽车股份有限公司 | A kind of halting mechanism, speed changer and automobile |
| CN112212004A (en) * | 2019-07-10 | 2021-01-12 | 广州汽车集团股份有限公司 | Parking device for vehicle |
-
2014
- 2014-02-08 CN CN201420059826.0U patent/CN203717893U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776220A (en) * | 2015-02-12 | 2015-07-15 | 长城汽车股份有限公司 | Parking mechanism for automatic gearbox and automatic gearbox |
| CN106704584B (en) * | 2015-07-28 | 2019-05-21 | 长城汽车股份有限公司 | A kind of halting mechanism, speed changer and automobile |
| CN106931161A (en) * | 2015-12-30 | 2017-07-07 | 长城汽车股份有限公司 | A kind of hydraulic pressure halting mechanism and automatic transmission |
| CN106931161B (en) * | 2015-12-30 | 2019-06-18 | 长城汽车股份有限公司 | A kind of hydraulic halting mechanism and automatic transmission |
| CN106015562A (en) * | 2016-07-08 | 2016-10-12 | 天津天海同步集团有限公司 | Parking mechanism |
| CN106015562B (en) * | 2016-07-08 | 2018-12-04 | 天津天海同步集团有限公司 | A kind of halting mechanism |
| CN107628007A (en) * | 2017-10-30 | 2018-01-26 | 中国第汽车股份有限公司 | Hydraulic pressure automatic parking device |
| CN107628007B (en) * | 2017-10-30 | 2024-03-19 | 中国第一汽车股份有限公司 | Hydraulic automatic parking device |
| CN107989996B (en) * | 2017-12-30 | 2023-08-08 | 盛瑞传动股份有限公司 | Parking mechanism and transmission |
| CN107989996A (en) * | 2017-12-30 | 2018-05-04 | 盛瑞传动股份有限公司 | Halting mechanism and speed changer |
| CN109282027A (en) * | 2018-12-07 | 2019-01-29 | 安徽江淮汽车集团股份有限公司 | A kind of P grades of executive device and method |
| CN112212004B (en) * | 2019-07-10 | 2022-04-01 | 广州汽车集团股份有限公司 | Parking device for vehicle |
| CN112212004A (en) * | 2019-07-10 | 2021-01-12 | 广州汽车集团股份有限公司 | Parking device for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| 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: 20140716 Termination date: 20190208 |