CN201626386U - Automobile transmission parking brake mechanism - Google Patents
Automobile transmission parking brake mechanism Download PDFInfo
- Publication number
- CN201626386U CN201626386U CN2010201195254U CN201020119525U CN201626386U CN 201626386 U CN201626386 U CN 201626386U CN 2010201195254 U CN2010201195254 U CN 2010201195254U CN 201020119525 U CN201020119525 U CN 201020119525U CN 201626386 U CN201626386 U CN 201626386U
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- China
- Prior art keywords
- parking
- operating bar
- bar
- gear
- cam slide
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- Expired - Lifetime
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- Gear-Shifting Mechanisms (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses an automobile transmission parking brake mechanism, which mainly comprises a parking gear, a parking pawl, an actuating rod, a slipping spring, a cam slider, a plurality of bearing pins, an intermittent motion rod and a positioning track slab. The cam slider is connected to the front end of the actuating rod and slidably connected with the rear end of the parking pawl by aid of pre-compression force of the slipping spring, the actuating rod is connected to the intermittent motion rod, and the positioning track slab is connected with the intermittent motion rod when at a P-gear and an R-gear and disconnected with the same when at an N-gear and a D-gear. When at the P-gear, the parking pawl is pushed to the parking gear by aid of a driving pin on the positioning track slab through the intermittent motion rod, the actuating rod, the slipping spring and the cam slider, then the transmission brakes. By aid of arrangement of the bearing pins and the intermittent motion rod, slipping speed and control precision of the parking brake mechanism are increased; and by aid of sliding connection in a line contact form, service life of the brake mechanism is prolonged.
Description
Technical field
The utility model relates to a kind of automobile parking braking device, especially for the parking and braking mechanism of Automotive transmission.
Background technology
Automatic gearbox generally all has D shelves, N shelves, R shelves and four gears of P shelves at least, compares with hand-operated transmission, and the P shelves are gears that automatic transmission with hydraulic torque converter increases.When gear level moves to " P " when shelves, stopping brake mechanism is the locking change speed gear box mechanically, and one of its function is that to guarantee that vehicle does not have mobile, they are two years old, be when vehicle is in high-speed travel state, if the gear-shift lever mistake pushes the P P PARK Position P, stop mechanism can allow change speed gear box rotation (skidding).This function of skidding of stopping brake mechanism can guarantee under the speed of a motor vehicle surpasses the situation of certain speed (about 8km/hr), and change speed gear box is locking automatically not, thereby can effectively prevent the damage that car transmissions caused because of the unexpected locking of change speed gear box.
The patent No. is US5685406, the invention people be BruceEdwardCrum U.S. Patent Publication a kind of change speed gear box Parking action actuating mechanism (ParkBrakeActuatingMechanismforPowerTransmission), this halting mechanism comprises Parking gear, park pawl, operating bar, cam mould and positioning rail plate; Described park pawl has the drive end can an end of engagement, an idler wheel mechanism is arranged on the described operating bar, this idler wheel mechanism is that two rollers up and down are set on a rolling wheel support roughly triangular in shape, when gear-shift lever is pulled to " P " shelves with the positioning rail plate, idler wheel mechanism on the operating bar promotes end of engagement and the Parking gear mesh that the park pawl drive end makes park pawl under the effect of this roller lower cam pattern, realize the function of braking during standstill.The Parking gear is fixed on output shaft of gear-box, after described park pawl is engaged with, immediately with the change speed gear box locking.
The patent No. is US6164427, the invention people be HiroshiOgawa U.S. Patent Publication a kind of progressive gear transmission parking device (ParkingApparatusforcontinuouslyVariableTransmission), this technical scheme is that the idler wheel mechanism on the operating bar is replaced by cam sleeve, when gear-shift lever was pulled to " P " shelves with the positioning rail plate, the following drive end that promotes park pawl of effect that the operating bar overhead cam shaft is enclosed within the cam mould of its underpart made end of engagement and Parking gear mesh.
In technique scheme, first kind of scheme adopts swivel as cam mould, handling ease, but its idler wheel mechanism is comparatively complicated, and manufacturing cost is higher.Employing in second kind of scheme a kind of swivel cam sleeve simple in structure, easy to process, but having adopted cam mould is the curved face, because park pawl is to utilize the profile of cam mould end face to control accurately, therefore higher to the accuracy requirement of this cam mould, cause the increase of manufacturing cost, and contacting between swivel cam slide and park pawl and the cam mould all be a contact form, and this contact form causes wearing and tearing quickening, the part of parts to shorten service life.
The utility model content
The purpose of this utility model is to provide a kind of parking and braking mechanism design, simplified structure, raising contact element and durability for automatic gearbox.
Technical solutions of the utility model are: a kind of parking and braking mechanism of automobile gear box comprises the Parking gear, park pawl, ratchet spring, operating bar, Parking cam slide, the spring that skids, some rest pins and positioning rail plate; Described park pawl is installed in the top of described Parking gear, is a leverage, and an end of engagement and drive end are arranged, and under the effect of described ratchet spring its end of engagement selectively with described Parking gear mesh; Described operating bar is a rod member, comprise front-end and back-end, described Parking cam slide is connected in the front end of described operating bar, slidingly connects with described some rest pins that its below is installed, and slidingly connects with described park pawl rear end under described some rest pin supportings; Describedly be arranged between described Parking cam slide and the operating bar rear end with skidding the spring precompressed compression; Described operating bar rear end is connected on the described positioning rail plate; Described some rest pins are arrangement in parallel by direction of slip.Parking and braking mechanism by this setting, make operating bar when entering or withdrawing from the Parking state action, cam slide on it is line with described some rest pins and contacts slip, reduced between part and worn and torn, solved original technology cam slide block and cam mould do some contact slide easy to wear, the problem that lack service life, simultaneously, removed the accuracy requirement height described in the background technology, the cam mould of difficult processing has reduced manufacturing cost.
As preferably, the described some rest pins that are arrangement in parallel, its quantity or spread length are corresponding with the movement travel of described Parking cam slide, so that use minimum rest pin to satisfy the requirement of sliding of described Parking cam slide thereon.
As preferably, described Parking cam slide is a block tapered member, is provided with a through hole at it on vertically, fits in the front end of described operating bar; Described wedge shape inclined-plane is line with described park pawl rear end and rest pin and contacts, and this line contact has improved the resistance to abrasion of cam slide wedge shape inclined-plane and described park pawl rear end equally, has prolonged the service life of described cam slide and park pawl.
As preferably, between described operating bar and positioning rail plate, also be provided with an intermittent moment bar, be installed in rotation in the moving lever rotating shaft, the rotating shaft of described intermittent moment bar is provided with a moving lever pull back spring, acts on the described intermittent moment bar; Described operating bar is connected on the described positioning rail plate off and on by this intermittent moment bar.
As preferably, on described intermittent moment bar, be provided with a smooth curve groove near described positioning rail plate middle part on one side, end is not provided with a connection holes; Described positioning rail plate is provided with drive pin and is connected to separably in the groove on the described intermittent moment bar, and described operating bar rear end is connected on the described connection holes.During gear shift, the positioning rail plate is changed to the R shelves from the P shelves, and by the smooth curve groove on the described intermittent moment bar, the cam slide on pulling operating bar and the operating bar makes described park pawl discharge the braking during standstill gear; When the positioning rail plate continues when the R shelves are changed to the N shelves, drive pin on the described positioning rail plate separates with groove on the intermittent moment bar, cam slide on described operating bar and the operating bar is no longer mobile, shorten the quantity of the rest pin of the actuating length of described operating bar and operating bar overhead cam slide block and its underpart, thereby also saved the space of parking and braking mechanism.
As preferably, there is roughly rectangular bending section the rear end of described operating bar, is connected in rotationally on the connection holes on the described intermittent moment bar; On described operating bar, also be provided with some defining flanges.This structure handling ease connects reliably, can carry out spacing to the spring that skids on its overhead cam slide block and the operating bar by the defining flange on it.
Description of drawings
Fig. 1 is a three-dimensional structure scheme drawing of the present utility model;
Fig. 2 is the structural representation of operating bar in the utility model;
Fig. 3 for the utility model when gear-shift lever is positioned at the P shelves intermittently the position of moving lever concern scheme drawing;
Fig. 4 works as gear-shift lever for the utility model and is positioned at change speed gear box associated gear meshing relation scheme drawing under the P shelves Parking state;
Fig. 5 concerns scheme drawing for the park pawl position of the utility model when gear-shift lever is positioned at R shelves, N shelves and D shelves;
Fig. 6 for the utility model when gear-shift lever is positioned at R shelves, N shelves and D shelves intermittently the position of moving lever concern scheme drawing.
The specific embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Referring to Fig. 1, a kind of parking and braking mechanism of automobile gear box comprises Parking gear 1, park pawl 2, ratchet spring 3, ratchet bearing pin 4, operating bar 15, the spring 6 that skids, cam slide 5, rest pin 16, intermittent moment bar 14, moving lever rotating shaft 8, moving lever pull back spring 7, positioning rail plate 12, drive pin 13, crank shaft 9, positioning roller 10 and retainer spring 11.
Described park pawl 2 is a leverage, and an end of engagement 2a and a drive end 2b are arranged, and under ratchet spring 3 effects that are installed on the ratchet bearing pin 4 its end of engagement and Parking gear 1 is thrown off; Referring to Fig. 2, described operating bar 15 has the roughly rectangular rear end of bending of a front end and, also is provided with some flange 15a, 15b on described operating bar 15, also is provided with a pad 15c in the front portion of the flange 15b of described operating bar 15; Described cam slide 5 is a wedge shape square, it vertically is provided with the front end that a through hole fits in described operating bar 15, between described pad 15c and described cam slide 5, be provided with one the precompressed spring 6 that skids is arranged, front end at described operating bar 15 is provided with a flange 15d, is used for described cam slide 5 is limited to described operating bar 15; Flange 15a on the operating bar guarantees the located lateral of operating bar 15 and described intermittent moment bar 14.Referring to Fig. 1, Fig. 5, described rest pin 16 quantity are 4, and along horizontal arrangement in parallel, the interval between the rest pin 16 can be impartial, and the length that its arrangement scope can be slightly less than described cam slide 5 adds its movement travel; Described cam slide 5 slidingly connects with described rest pin 16 and slidingly connects with the drive end of described park pawl 2 simultaneously; The two ends of described intermittent moment bar 14 are respectively equipped with a connection holes and are installed in the described moving lever rotating shaft 8 by one of them mounting hole, and the another one connection holes is used for turning with the rear end bending section of operating bar 15 and connects; A moving lever pull back spring 7 also is housed in described moving lever rotating shaft 8, makes intermittent moment bar 14 when external force is eliminated, carry out return; Referring to Fig. 3, the middle part of described intermittent moment bar 14 is provided with a smooth curve groove 14a, and described positioning rail plate 12 is provided with a drive pin 13 and does intermittent the connection with described smooth curve groove 14a; Described positioning rail plate 12 is fixed on the described crank shaft 9 by the mounting hole on it.
Referring to Fig. 1, Fig. 3, when gear-shift lever is located at the P shelves with gear, described positioning rail plate 12 is in first screens, at this moment, drive pin 13 is connected in the groove 14a on the described intermittent moment bar 14 on the positioning rail plate 12, and intermittent moment bar 14 promotes described park pawl 2 and 1 engagement of Parking gear by operating bar 15 that connects with it and the cam slide 5 that is installed in its front end under the supporting of described rest pin 16.Referring to Fig. 4, Parking gear 1 is installed on the tween drive shaft 20,22 engagements of tween drive shaft and wheel drive shaft, in case Parking gear 1 and park pawl 2 engagements, Parking gear 1 will be by locking, thereby with change speed gear box and then with drive wheel and vehicle locking.
If vehicle is still in fast running when gear-shift lever moves on to the P shelves, park pawl end of engagement 2a will collide on the Parking gear teeth tips, bounce back into the releasing position; Skid spring 6 the pre-compression force deficiency so that park pawl 2 quicken can with Parking gear 1 engagement, thereby prevent the damage that car transmissions caused because of the unexpected locking of the change speed gear box of fast turn-around.Only when the speed of a motor vehicle was hanged down to setting speed, park pawl 2 end of engagement 2a just forwarded between the backlash of Parking gear 1, with the change speed gear box locking if having time.
Referring to Fig. 5, Fig. 6, when gear-shift lever with gear when the P shelves are changed to the R shelves, described positioning rail plate 12 rotates under the drive of crank shaft 9, turn to the R screens from the P screens, at this moment, drive pin 13 is by intermittent moment bar 14 upper groove 14a pulling intermittent moment bar 14, and spurs operating bar 15 successively and be installed in the cam slide 5 of its front end, park pawl 2 is thrown off with Parking gear 1 under the effect of ratchet spring 3, thereby finish the release of braking during standstill.
When gear-shift lever continues gear when the R shelves are changed to N shelves and D shelves, described positioning rail plate 12 rotates under the drive of crank shaft 9, turn to the N screens from the R screens, at this moment, owing to deviate from the groove 14a of drive pin 13 from intermittent moment bar 14, intermittent moment bar 14 stops operating, and then makes operating bar 15, cam slide 5 and park pawl 2 stop motions.
In order to save axial space, Parking gear 1 also can be installed in (referring to Fig. 4) on the wheel drive shaft 22, and this can strengthen the size of halting mechanism because of braking force, thereby this installation is suitable for light-duty vehicle.
Specific embodiment is in order more to be expressly understood the utility model, not as a kind of restriction to the utility model right, under the prerequisite that does not break away from the utility model aim, various variations can be arranged, and all these will be included within the scope of this claim the conspicuous modification of described those skilled in the art.
Claims (6)
1. parking and braking mechanism of automobile gear box, comprise the Parking gear, park pawl, ratchet spring, operating bar, Parking cam slide, spring and positioning rail plate skid, described park pawl is installed in the top of described Parking gear, it is a leverage, an end of engagement and drive end are arranged, under the effect of described ratchet spring its end of engagement selectively with described Parking gear mesh; Described operating bar is a rod member, comprises front-end and back-end, and described Parking cam slide is connected in the front end of described operating bar; Describedly be arranged between described Parking cam slide and the operating bar rear end with skidding the spring precompressed compression; Described operating bar rear end is connected on the described positioning rail plate; It is characterized in that: it also comprises the some rest pins that are installed in described Parking cam slide below; Described Parking cam slide and described some rest pins slidingly connect, and slidingly connect with described park pawl rear end under described some rest pin supportings; Described some rest pins are arrangement in parallel by direction of slip.
2. a kind of parking and braking mechanism of automobile gear box according to claim 1 is characterized in that: described Parking cam slide is a block tapered member, is provided with a through hole on it is vertical, fits in the front end of described operating bar; Described wedge shape inclined-plane is line with described park pawl rear end and rest pin and contacts.
3. a kind of parking and braking mechanism of automobile gear box according to claim 1 and 2 is characterized in that: the described some rest pins that are arrangement in parallel, its quantity or spread length are corresponding with the movement travel of described Parking cam slide.
4. a kind of parking and braking mechanism of automobile gear box according to claim 1, it is characterized in that: between described operating bar and positioning rail plate, also be provided with an intermittent moment bar, be installed in rotation in the moving lever rotating shaft, described moving lever rotating shaft is provided with a moving lever pull back spring, acts on the described intermittent moment bar; Described operating bar intermittently is connected on the described positioning rail plate by this intermittent moment bar.
5. a kind of parking and braking mechanism of automobile gear box according to claim 4 is characterized in that: be provided with a groove near described positioning rail plate middle part on one side on described intermittent moment bar, end is not provided with a connection holes; Described positioning rail plate is provided with drive pin and is connected to separably in the groove on the described intermittent moment bar; The rear end of described operating bar is connected on the described connection holes.
6. according to claim 1 or 4 described a kind of parking and braking mechanism of automobile gear box, it is characterized in that: there is roughly rectangular bending section the rear end of described operating bar, on the rotatable connection holes that is connected on the described intermittent moment bar; On described operating bar, also be provided with some defining flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201195254U CN201626386U (en) | 2010-02-26 | 2010-02-26 | Automobile transmission parking brake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201195254U CN201626386U (en) | 2010-02-26 | 2010-02-26 | Automobile transmission parking brake mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201626386U true CN201626386U (en) | 2010-11-10 |
Family
ID=43057775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201195254U Expired - Lifetime CN201626386U (en) | 2010-02-26 | 2010-02-26 | Automobile transmission parking brake mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201626386U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907169A (en) * | 2010-02-26 | 2010-12-08 | 浙江吉利汽车研究院有限公司 | Parking and braking mechanism of automobile gear box |
| CN102958727A (en) * | 2011-06-29 | 2013-03-06 | 丰田自动车株式会社 | Parking apparatus |
| CN103423383A (en) * | 2012-05-24 | 2013-12-04 | 姜华 | One-speed transmission in all-electric automobiles |
| CN103640560A (en) * | 2013-12-09 | 2014-03-19 | 钟太平 | Full-automatic multi-emergency-resistance brake |
| CN103917421A (en) * | 2011-09-05 | 2014-07-09 | 捷豹路虎有限公司 | Improvements in vehicle transmissions having a park function |
| CN106429916A (en) * | 2016-09-30 | 2017-02-22 | 重庆维大力起重设备有限公司 | Chain block operating angle adjusting device and slider assembling structure |
-
2010
- 2010-02-26 CN CN2010201195254U patent/CN201626386U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907169A (en) * | 2010-02-26 | 2010-12-08 | 浙江吉利汽车研究院有限公司 | Parking and braking mechanism of automobile gear box |
| CN102958727A (en) * | 2011-06-29 | 2013-03-06 | 丰田自动车株式会社 | Parking apparatus |
| CN102958727B (en) * | 2011-06-29 | 2015-11-25 | 丰田自动车株式会社 | Lugs |
| CN103917421A (en) * | 2011-09-05 | 2014-07-09 | 捷豹路虎有限公司 | Improvements in vehicle transmissions having a park function |
| CN103423383A (en) * | 2012-05-24 | 2013-12-04 | 姜华 | One-speed transmission in all-electric automobiles |
| CN103640560A (en) * | 2013-12-09 | 2014-03-19 | 钟太平 | Full-automatic multi-emergency-resistance brake |
| CN106429916A (en) * | 2016-09-30 | 2017-02-22 | 重庆维大力起重设备有限公司 | Chain block operating angle adjusting device and slider assembling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101110 Effective date of abandoning: 20131030 |
|
| RGAV | Abandon patent right to avoid regrant |