CN203614727U - Parking system of automobile gearbox - Google Patents
Parking system of automobile gearbox Download PDFInfo
- Publication number
- CN203614727U CN203614727U CN201320688284.9U CN201320688284U CN203614727U CN 203614727 U CN203614727 U CN 203614727U CN 201320688284 U CN201320688284 U CN 201320688284U CN 203614727 U CN203614727 U CN 203614727U
- Authority
- CN
- China
- Prior art keywords
- parking
- ratchet wheel
- pawl
- return spring
- park pawl
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000000452 restraining effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a parking system of an automobile gearbox. The parking system comprises a cam (7a), a pawl return spring (8a), a parking pawl (9a) and a parking ratchet wheel (12a), wherein the cam can axially move, and is pressed on the upper surface of the extension part of the pawl return spring; the pawl return spring is arranged above the front end of the parking pawl, and the lower surface of the extension part of the pawl return spring is pressed on the parking pawl; the parking pawl is rotatably arranged on a gearbox body, the front end of the parking pawl is provided with a downward-extended boss (9a1); the external circumference of the parking ratchet wheel is provided with a limit slot (12a1) matched with the boss on the parking pawl; the cam can be used for axially driving the pawl return spring to move up and down; the pawl return spring can drive the parking pawl to move up and down, so that the boss is parked in or exits from the limit slot of the parking ratchet wheel; the parking ratchet wheel is arranged on a differential shell; the parking system can be used for solving the problem that parking failure is easily caused when the parking ratchet wheel is arranged on an input shaft.
Description
Technical field
The utility model relates to automotive transmission, is specifically related to a kind of automotive transmission parking system.
Background technique
Existing a kind of automotive transmission parking system, as shown in Figure 1, comprises motor 1, worm screw 2, worm gear 3, gear 4, tooth bar 5, spring 6, cam 7, parking return spring 8, park pawl 9 and parking ratchet wheel 10; Described parking ratchet wheel 10 is enclosed within on input shaft, is connected with input shaft interference swelling, and input shaft is directly connected with motor.When needing parking, park pawl 9 moves downward in the dovetail groove that snaps in parking ratchet wheel 10, and parking ratchet wheel 10 is no longer rotated.This automotive transmission parking system, under the severe condition of operating mode, stressed when excessive when parking ratchet wheel 10, easily cause parking ratchet wheel 10 to trackslip on input shaft, thereby cause park pawl 9 and parking ratchet wheel 10 to get loose, parking was lost efficacy.In the time that this automotive transmission parking system is used for many gears pure electric automobile speed changer, if parking ratchet wheel 10 is arranged on input shaft, while needing parking, speed changer must be hung into effectively parking of gear.If hung for a long time into gear parking, will shorten greatly working life.
Model utility content
The technical problems to be solved in the utility model is to provide the automotive transmission parking system that a kind of reliability is higher.
For solving the problems of the technologies described above, the utility model is taked following technological scheme;
Automotive transmission parking system of the present utility model, comprises cam, ratchet return spring, park pawl and parking ratchet wheel, described cam can move axially, its be pressed in ratchet return spring left side extension above, described ratchet return spring is arranged on the top of park pawl front end, below its left side extension, be pressed in park pawl, described park pawl is rotatably installed on mission case, its front end has the boss stretching out downwards, described parking ratchet wheel excircle is provided with the restraining groove matching with the boss in park pawl, described camshaft moves up and down to the mobile ratchet return spring that drives, ratchet return spring drives again park pawl to move up and down, make its boss income or exit the restraining groove on parking ratchet wheel, described parking ratchet wheel is installed on differential casing,
Described parking ratchet wheel adopts bolt to be installed on differential casing;
The end face of described parking ratchet wheel is provided with at least two spacing pins, and the end face of described differential casing is provided with the spacing hole matching with the location pin on parking ratchet wheel, and parking ratchet wheel is connected with spacing hole by location pin with differential casing.
Compared with prior art, the utility model comprises following beneficial effect;
Parking ratchet wheel is installed on differential casing, has solved parking ratchet wheel and has been installed on input shaft, under operating mode mal-condition, excessively on input shaft, trackslips because of stressed, and itself and parking ratchet wheel get loose, the parking Problem of Failure easily causing, thereby reliability is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art automotive transmission parking system;
Fig. 2 is the structural representation of the utility model automotive transmission parking system;
Fig. 3 is the structural representation of parking ratchet wheel;
Fig. 4 is the structural representation of differential casing.
embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Shown in Figure 2, automotive transmission parking system of the present utility model, comprises motor 1a, worm screw 2a, worm gear 3a, gear 4a, tooth bar 5a, spring 6a, cam 7a, ratchet return spring 8a, park pawl 9a and parking ratchet wheel 12a, described cam 7a can move axially, its be pressed in ratchet return spring 8a left side extension above, described ratchet return spring 8a is arranged on the top of park pawl 9a front end, below its left side extension, be pressed on park pawl 9a, described park pawl 9a is rotatably installed on mission case by detent pin 10a, its front end has the boss 9a1 stretching out downwards, described parking ratchet wheel 12a excircle is provided with the restraining groove 12a1 matching with the boss 9a1 on park pawl 9a, described cam 7a moves axially and drives ratchet return spring 8a to move up and down, ratchet return spring 8a drives again park pawl 9a to move up and down, make its boss 9a1 income or exit the restraining groove 12a1 on parking ratchet wheel 12a, described parking ratchet wheel 12a is installed on differential casing 11a.Because parking ratchet wheel 12a is installed on differential casing 11a, like this, under the severe condition of operating mode, even if parking ratchet wheel 12a is stressed excessive, also can not depart from from differential casing 11a, also after can not causing the boss 9a1 of park pawl 9a front end to snap in the restraining groove 12a1 on parking ratchet wheel 12a, get loose, parking was lost efficacy.Thereby reliability is higher.
Described parking ratchet wheel 12a adopts bolt to be installed on differential casing 11a.Such connection is reliable.
Shown in Fig. 3 and Fig. 4, the end face of described parking ratchet wheel 12a is provided with at least two spacing pin 12a2; The end face of described differential casing 11a is provided with the spacing hole 11a1 that the location pin 12a2 that is provided with parking ratchet wheel 12a matches; Parking ratchet wheel 12a is connected with spacing hole 11a1 by location pin 12a2 with differential casing 11a.Like this, when under the more severe condition of operating mode, spacing pin 12a2 and spacing hole 11a1 that this is connected can offset a part of parking peripheral force.The shearing force that larger weakening bolt is subject to, guarantees that parking ratchet wheel 12a and differential casing 11a link together reliably, can not cause parking because of trackslipping of parking ratchet wheel 12a and lose efficacy.And parking ratchet wheel 12a is arranged on differential casing, also effectively utilize space, the axial dimension of speed changer has reduced greatly, and the ability of speed changer coupling car load has also obtained expanding greatly.
Working principle of the present utility model is as follows:
This automotive transmission parking system adopts electronics automatic parking, and it is upper that parking ratchet wheel 12a is arranged in differential casing 11a, is connected with differential casing 11a by bolt and location pin 12a2 thereof.Parking actuator adopts motor 1a to drive, the high speed of motor 1a output is by worm gear 3a and worm screw 2a deceleration that can self-locking, process gear 4a and tooth bar 5a are converted into rotatablely moving of worm gear 3a the axial motion of tooth bar 5a again, thereby promote park pawl 9a, make, in the restraining groove 12a1 of its boss 9a1 income parking ratchet wheel 12a, to realize parking.On the contrary, when motor 1a reversion, park pawl 9a can be along moving in the other direction, and boss 9a1 exits the restraining groove 12a1 of parking ratchet wheel 12a, and parking is removed.
Above-described example is only that preferred implementation of the present utility model is described; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (3)
1. an automotive transmission parking system, comprises cam (7a), ratchet return spring (8a), park pawl (9a) and parking ratchet wheel (12a), described cam (7a) can move axially, its be pressed in ratchet return spring (8a) left side extension above, described ratchet return spring (8a) is arranged on the top of park pawl (9a) front end, below its left side extension, be pressed in park pawl (9a), described park pawl (9a) is rotatably installed on mission case, its front end has the boss (9a1) stretching out downwards, described parking ratchet wheel (12a) excircle is provided with the restraining groove (12a1) matching with the boss (9a1) in park pawl (9a), described cam (7a) moves axially and drives ratchet return spring (8a) to move up and down, ratchet return spring (8a) drives again park pawl (9a) to move up and down, make its boss (9a1) income or exit the restraining groove (12a1) on parking ratchet wheel (12a), it is characterized in that, described parking ratchet wheel (12a) is installed on differential casing (11a).
2. automotive transmission parking system according to claim 1, is characterized in that; Described parking ratchet wheel (12a) adopts bolt to be installed on differential casing (11a).
3. automotive transmission parking system according to claim 1 and 2, is characterized in that; The end face of described parking ratchet wheel (12a) is provided with at least two spacing pins (12a2); The end face of described differential casing (11a) is provided with the spacing hole (11a1) matching with the location pin (12a2) on parking ratchet wheel (12a); Parking ratchet wheel (12a) is connected with spacing hole (11a1) by location pin (12a2) with differential casing (11a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688284.9U CN203614727U (en) | 2013-11-04 | 2013-11-04 | Parking system of automobile gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688284.9U CN203614727U (en) | 2013-11-04 | 2013-11-04 | Parking system of automobile gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614727U true CN203614727U (en) | 2014-05-28 |
Family
ID=50767376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320688284.9U Expired - Lifetime CN203614727U (en) | 2013-11-04 | 2013-11-04 | Parking system of automobile gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614727U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387202A (en) * | 2014-09-03 | 2016-03-09 | E-Aam传动系统公司 | Park lock mechanism |
| CN106347115A (en) * | 2016-09-28 | 2017-01-25 | 昆山德拉特兰传动科技有限公司 | Multi-layer parking system for all-electric vehicle |
| CN109723785A (en) * | 2019-03-15 | 2019-05-07 | 重庆青山工业有限责任公司 | A kind of two speed transmission based on pure electric automobile |
| 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 |
| CN111828625A (en) * | 2019-04-17 | 2020-10-27 | 采埃孚股份公司 | Gear, in particular parking lock gear, and parking lock device |
-
2013
- 2013-11-04 CN CN201320688284.9U patent/CN203614727U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387202A (en) * | 2014-09-03 | 2016-03-09 | E-Aam传动系统公司 | Park lock mechanism |
| CN105387202B (en) * | 2014-09-03 | 2018-04-27 | E-Aam 传动系统公司 | Parking latch mechanism |
| 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 |
| CN106347115A (en) * | 2016-09-28 | 2017-01-25 | 昆山德拉特兰传动科技有限公司 | Multi-layer parking system for all-electric vehicle |
| CN109723785A (en) * | 2019-03-15 | 2019-05-07 | 重庆青山工业有限责任公司 | A kind of two speed transmission based on pure electric automobile |
| CN111828625A (en) * | 2019-04-17 | 2020-10-27 | 采埃孚股份公司 | Gear, in particular parking lock gear, and parking lock device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |