CN107499292A - automatic transmission electronic parking mechanism - Google Patents
automatic transmission electronic parking mechanism Download PDFInfo
- Publication number
- CN107499292A CN107499292A CN201710640269.XA CN201710640269A CN107499292A CN 107499292 A CN107499292 A CN 107499292A CN 201710640269 A CN201710640269 A CN 201710640269A CN 107499292 A CN107499292 A CN 107499292A
- Authority
- CN
- China
- Prior art keywords
- roller
- parking
- park pawl
- push rod
- slope
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
Abstract
The present invention relates to a kind of automatic transmission electronic parking mechanism,Including parking motor,Parking ratchet wheel and park pawl,Parking motor is fixed on mission case,The rotating shaft of parking motor is connected by reduction gear with a screw rod,Screw rod and an internally threaded sleeve threaded one end coordinate,One straight line stretches push rod is slidably fitted in the other end of internally threaded sleeve and overhanging,The overhanging end of linear telescopic push rod sets roller,A compression spring is cased with overhanging section of linear telescopic push rod,The upper surface of roller on linear telescopic push rod and the lower end guide face contacts for the guide plate being fixed on mission case,The tail end of park pawl is fixing end,The fixing end is hinged on mission case,The head end of park pawl is free end,The bottom of the free end is provided with the blade tooth extended downwardly,The top of the free end is provided with slope,Parking ratchet wheel is evenly distributed in teeth groove,It is corresponding with the free end of park pawl that mission case is provided with a unlocking resetting device.
Description
Technical field
The present invention relates to a kind of halting mechanism, and in particular to a kind of automatic transmission electronic parking mechanism.
Background technology
With the development of automobile market, automatic transmission improves constantly in the accounting of transmission market.Automatic transmission is pacified
Full property is an important factor for automatic gearshift automobile needs to consider.The effect of halting mechanism is in stationary vehicle that transmission system is locked
It is the indispensable important device of Automotives Equipped Automatic Transmissions to ensure parking safety, its performance quality is directly connected to car owner's life, wealth
The safety of production.The halting mechanism used mostly currently on the market is manual parking mechanism, and manual parking mechanism generally by staying manually
The motion of parking brake is passed to park pawl by complicated transmission mechanism in mechanism of car, and machinery damage occurs in transmittance process in parking power
Lose, driver needs to use pulls parking brake to complete parking action compared with great strength.On the other hand, can be because of vehicle driving up, descending, level road
The comfort level that gear shifting handle parking power was linked into or exited park position so as to influence human pilot is influenceed etc. the difference of road conditions；Separately
Outside, if it is desired that berth-changing strength makes it be of moderate size, it is also necessary to which increase designs some parts or structure to adjust berth-changing strength.Due to hand
The arrangement of various parts and structure can influence the integral arrangement of handle, speed changer and vehicle in dynamic halting mechanism, cause
Underaction when halting mechanism is designed and arranged.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of automatic transmission electronic parking mechanism, it is accounted for
It is few, compact-sized with space, it is easy to halting mechanism to design and arrange, moreover it is possible to improve the comfort level of lifting parking operation.
The object of the present invention is achieved like this：A kind of automatic transmission electronic parking mechanism, including parking motor, parking
Ratchet and park pawl, the parking motor are fixed on mission case, and the rotating shaft of parking motor passes through reduction gearing
Mechanism is connected with a screw rod, and the screw rod and an internally threaded sleeve threaded one end coordinate and leave the motion row of internally threaded sleeve
Journey, a straight line stretches push rod be slidably fitted in it is in the other end of internally threaded sleeve and overhanging, the linear telescopic push rod it is overhanging
End sets roller, is cased with a compression spring on overhanging section of linear telescopic push rod, the roller on the linear telescopic push rod it is upper
End face and the lower end guide face contacts of guide plate being fixed on mission case and it can be rolled along the spigot surface of guide plate, it is described
The tail end of park pawl is fixing end, and the fixing end is hinged on mission case, and the head end of the park pawl is free end,
The bottom of the free end is provided with the blade tooth extended downwardly, and the top of the free end is provided with drives park pawl free for roller rolls
The slope of end motion, the low side of the slope correspond to the tail end of park pawl, and the parking ratchet wheel is circumferentially fixed in speed changer
In the rotating shaft of shafting, the teeth groove for being evenly distributed in some blade tooths for park pawl and inserting of the parking ratchet wheel, the speed change
It is corresponding with the free end of park pawl that device casing is provided with a unlocking resetting device.
The overhanging end of the linear telescopic push rod sets a roller bracket, and the roller is supported on roller branch by lateral pin
Frame, roller is set to be rolled under the drive of linear telescopic push rod along the slope on the lower end spigot surface and park pawl of guide plate,
And drive the free end motion of park pawl.
The overhanging end of the linear telescopic push rod sets a roller bracket, and upper and lower lateral pin is set respectively on the roller bracket,
Each self installation roller on two lateral pins, wherein, lower end spigot surface of the upper roller along guide plate rolls, and lower roller is oblique along in park pawl
Domatic rolling.
The linear telescopic push rod is provided with the bar hole axially extended, and the radial peg that the internally threaded sleeve is set is inserted
Enter the bar hole on linear telescopic push rod formed it is circumferentially positioned.
The length of the bar hole is more than the compress variation for the compression spring being enclosed on linear telescopic push rod.
The reduction gear includes support plate, input gear, deceleration duplicate gear, output gear, the support plate
A jackshaft is provided with, the deceleration duplicate gear is slidably fitted on jackshaft, and the screw rod is rotatably supported on supporting
On plate, the output gear is connected firmly with screw rod and engaged with the little gear of deceleration duplicate gear, and parking motor is fixed with support plate
Connection, the output shaft of parking motor connect firmly through support plate with input gear, the gear wheel of the input gear and duplicate gear
Engagement.
Angle is 20 30 ° between the slope and park pawl axis.
The slope includes an initial ramp face, transition bench stage, back segment slope, and the initial ramp face passed through
Step section is crossed to back segment slope rounding off.
The unlocking resetting device is a return spring, and described return spring one end acts on the peace of park pawl free end
Fill in hole, other end is acted on a spring base, and the spring base is fixedly connected with mission case.
Using such scheme, the parking motor is fixed on mission case, and the rotating shaft of parking motor is by subtracting
Fast gear mechanism is connected with a screw rod, and the screw rod and an internally threaded sleeve threaded one end coordinate and leave the fortune of internally threaded sleeve
Dynamic stroke, the other end that a straight line stretches push rod is slidably fitted in internally threaded sleeve is interior and overhanging, the linear telescopic push rod
Overhanging end sets roller, is cased with a compression spring on overhanging section of linear telescopic push rod, the roller on the linear telescopic push rod
Upper surface and the lower end guide face contacts of guide plate that are fixed on mission case and can be rolled along the spigot surface of guide plate,
The tail end of the park pawl is fixing end, and the fixing end is hinged on mission case, and the head end of the park pawl is certainly
By holding, the bottom of the free end is provided with the blade tooth extended downwardly, and the top of the free end is provided with drives parking spine for roller rolls
The slope of the free end motion of pawl, the low side of the slope correspond to the tail end of park pawl, the parking ratchet wheel it is circumferentially fixed
In the rotating shaft of speed changer shafting, the teeth groove for being evenly distributed in some blade tooths for park pawl and inserting of the parking ratchet wheel, institute
It is corresponding with the free end of park pawl provided with a unlocking resetting device to state mission case.Parking motor is received by wire harness and changed
The electric signal of block handle output, parking motor is under the control of electric signal, the rotating shaft output torque of parking motor, parking motor
Rotating shaft is connected by reduction gear with a screw rod, increases torsion effect, energy by setting reduction gear to play deceleration
The requirement to motor is reduced, the design arrangement of motor can be easy to.The moment of torsion passes to screw rod, and the gyration of screw rod is led to
The screw thread for crossing screw rod and internally threaded sleeve coordinates the linear motion for being converted to linear telescopic push rod, by controlling parking motor
Forward and backward can realize the linear reciprocating motion of linear telescopic push rod.Screw rod and the screw thread of internally threaded sleeve coordinate and can also risen
To reinforcement effect, the less parking motor of output torque can be made to meet requirement, be easy to save parking motor arrangement space, spiral shell
Rotation transmission, which coordinates, has the characteristics that simple in construction, stable drive, noise are low.The linear reciprocating motion of straight line output end passes to pressure
Thrust is passed to roller by contracting spring, compression spring compression afterwards, and roller rolls on slope, drives park pawl free end
Motion, the top of the free end are provided with the slope that the free end motion of park pawl is driven for roller rolls, and roller is in slope
Reinforcement effect can also be played by rolling cooperation, and the less parking motor of output torque can be made to meet requirement.Roller and slope
Between be rolling friction, mechanical loss is small, abrasion it is smaller, slope, linear telescopic push rod service life can be improved, so as to extend
The service life of whole halting mechanism.Also allow for transmitting using rolling friction and larger be used to drive the free end motion of park pawl
Driving force, so as to increase the parking power for driving blade tooth and tooth socket fit, improve parking reliability.The freedom of park pawl
Teeth groove intermeshing, parking ratchet wheel locking, parking ratchet wheel on the blade tooth and parking ratchet wheel set is held to be bolt-connected to speed change
In device shafting or differential mechanism shell, so as to realize the locking of speed changer.When ratchet blade tooth acts on the tooth top of the ratchet of ratchet
When, one end stroke that compression spring acts on straight line output end is hung as when parking is kept off with normal, and acts on linear telescopic
The stroke of push rod one end is less than the stroke in the case of blade tooth directly engages with teeth groove on parking ratchet wheel, is now stored up inside compression spring
Excess resilient potential energy in the case of directly being engaged with teeth groove on parking ratchet wheel compared with blade tooth is deposited, it is unnecessary after blade tooth cunning streaks ratchet top
Elastic potential energy discharges, and drives billowing son to move forward, and then drives park pawl to rotate, and makes blade tooth and teeth groove phase on parking ratchet wheel
Mutually engagement, complete the locking of parking ratchet wheel.Compression spring is set to absorb the vibrations of whole mechanism, moreover it is possible to make blade tooth and teeth groove
It is lasting to be bonded and then reduce noise, improve operation comfort.The upper surface of roller on the linear telescopic push rod is with being fixed on
The lower end guide face contacts of guide plate on mission case and can along guide plate spigot surface roll, guide plate be used for carry roll
The reaction force that son is applied by slope, prevents roller laterally offset, makes roller moving direction and straight line output end axial direction one
Cause.After setting unblock resetting structure roller can be made to withdraw slope, park pawl is rotated return and make blade tooth from being meshed
Teeth groove withdraw from.Halting mechanism all provides shifting power during parking by parking motor, and parking motor passes through wire harness
Be connected with overall wire sheaves with gear shifting handle, what it was transmitted is that electric signal does not have drag-line or other transmission mechanisms, no matter any work
Feel all, to improve driver's parking comfort level during condition driver's parking；Because halting mechanism and gear shifting handle transmission
It is electric signal, does not have the transmission of drag-line and berth-changing strength relative to manual parking mechanism, so cancels the regulation gear shift designed originally
The part and structure of power, reducing design difficulty and reduces parts, has saved space, compact-sized.Eliminate gear shift hand
Drag-line between handle and halting mechanism, the position of gear shifting handle do not influence the arrangement of halting mechanism, improve halting mechanism arrangement
Flexibility.
The overhanging end of the linear telescopic push rod sets a roller bracket, and the roller is supported on roller branch by lateral pin
Frame, roller is set to be rolled under the drive of linear telescopic push rod along the slope on the lower end spigot surface and park pawl of guide plate,
And the free end motion of park pawl is driven, the roller bracket is rolled by roller and guide plate to be coordinated, roller and guide plate
It is rolling friction between slide guide face, it is smaller using this structure roller and slope surface wear, guide plate and roller bracket can be improved
Use birthday noodle, so as to extend the service life of whole halting mechanism.Also allow for transmitting larger side force using rolling friction,
Being capable of the larger reaction force that is applied by slope of carrier roller support.
The overhanging end of the linear telescopic push rod sets a roller bracket, and upper and lower lateral pin is set respectively on the roller bracket,
Each self installation roller on two lateral pins, wherein, lower end spigot surface of the upper roller along guide plate rolls, and lower roller is oblique along in park pawl
Domatic rolling.It is rolling friction between roller and slope on lower lateral pin, is rolling between roller and slope on lower lateral pin
Friction, using this structure, lateral pin can effectively improve the rigidity and service life of lateral pin using two supports structure, be oriented to
Plate, slope, the abrasion of linear telescopic push rod are smaller, can improve slope, guide plate, linear telescopic push rod service life, so as to
Extend the service life of whole halting mechanism, also allow for transmitting larger side force using rolling friction, being capable of carrier roller branch
The larger reaction force that frame is applied by slope.
The linear telescopic push rod is provided with the bar hole axially extended, and the radial peg that the internally threaded sleeve is set is inserted
Enter the bar hole on linear telescopic push rod and formed circumferentially positioned, radial peg is slidably matched with bar hole.
The length of the bar hole is more than the compress variation for the compression spring being enclosed on linear telescopic push rod, and use is this
Structure, the axial thrust of internally threaded sleeve is all by compression spring transmission.
The reduction gear includes support plate, input gear, deceleration duplicate gear, output gear, the support plate
A jackshaft is provided with, the deceleration duplicate gear is slidably fitted in jackshaft, and the screw rod is rotatably supported on support plate
On, the output gear is connected firmly with screw rod and engaged with the little gear of deceleration duplicate gear, and parking motor is fixed with support plate to be connected
Connect, the output shaft of parking motor is connected firmly through support plate with input gear, and the gear wheel of the input gear and duplicate gear is nibbled
Close, using said structure, deceleration twice is reached by two-stage gear drive and increases the purpose turned round.
The slope includes an initial ramp face, transition bench stage, back segment slope, and the initial ramp face passed through
Step section is crossed to back segment slope rounding off.Initial ramp face is set.Roller is in initial ramp face, cunning on the transition bench stage
Dynamic stage, the blade tooth of park pawl are not inserted into teeth groove, and park pawl rotary resistance suffered when rotating is smaller, by setting transition
Step section can make park pawl overcome less turning circumference direction in the case of roller bracket moves small distance
In the case of resistance and make blade tooth that there is larger stroke；Roller crosses the transition bench stage when back segment slope slides, parking spine
The blade tooth of pawl can produce larger locking power under smaller stroke in turning circumference direction, and the locking power is advantageous to blade tooth insertion
Teeth groove.Because in a parking operation, the decrement of compression spring is certain, the elastic potential energy of storage is certain, using this knot
Structure can also distribute more elastic potential energy the locking action for blade tooth insertion teeth groove, improve the reliability of parking.
The unlocking resetting device is a return spring, and described return spring one end acts on the peace of park pawl free end
Fill in hole, other end is acted on a spring base, and the spring base is fixedly connected with mission case.Roller rolls in slope
During to slope apply the power for driving park pawl to be rotated around park pawl hinged end, this, which is made every effort to promote, makes the return bullet
Spring compresses, and after setting unblock resetting structure roller can be made to withdraw slope, park pawl is rotated return and makes blade tooth slave phase
The teeth groove of engagement is withdrawn from.
Using foregoing invention, its space-consuming is few, compact-sized, is easy to halting mechanism to design and arrange, moreover it is possible to carry
Rise the comfort level of parking operation
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is structural representation when halting mechanism hangs false P shelves；
Fig. 3 is that halting mechanism exits P mark structure schematic diagrames；
Fig. 4 is screw-rod structure schematic diagram in Fig. 1；
Fig. 5 is park pawl structural representation in Fig. 1；
Fig. 6 is reduction gear structural representation in Fig. 1；
Fig. 7 is roller bracket structure schematic diagram in Fig. 1.
In accompanying drawing, 1 is parking motor, and 1a is output shaft, and 2 be reduction gear, and 3 be screw rod, and 4 be internally threaded sleeve, 5
It is linear telescopic push rod for compression spring, 6,8 be roller bracket, and 7 be guide plate, and 6a is bar hole, and 8b is lateral pin, and 8a is installation
Side plate, 9 be roller, and 10 be return spring, and 11 be park pawl, and 11a is blade tooth, and 11b is slope, and 11ba is initial ramp
Face, 11bb are the transition bench stage, and 11bc is back segment slope, and 12 be parking ratchet wheel, and 13 be lock pin, and 18 be radial peg, and 19 are
Input gear, 20 be gear wheel, and 21 be little gear, and 22 be output gear, and 23 be support plate, and 24 be jackshaft.
Embodiment
Referring to the drawings, specific embodiments of the present invention be will be described in.
Referring to Fig. 1 to Fig. 7, a kind of embodiment of automatic transmission electronic parking mechanism, automatic transmission electronic parking machine
Structure, including parking motor 1, parking ratchet wheel 12 and park pawl 11, the parking motor 1 are fixed on mission case,
The rotating shaft of parking motor 1 is connected by reduction gear 2 with a screw rod 3.The reduction gear 2 include support plate 23,
Input gear 19, deceleration duplicate gear, output gear 22, the support plate 23 are provided with a jackshaft 24, the deceleration duplex
Gears slip coordinates on jackshaft 24, and the screw rod 3 is rotatably supported on support plate 23, the output gear 22 and spiral shell
Bar 3 is connected firmly and engaged with the little gear 21 of deceleration duplicate gear, and parking motor 1 is fixedly connected with support plate 23, parking motor 1
Output shaft 1a connects firmly through support plate 23 with input gear 19, and the input gear 19 engages with the gear wheel 20 of duplicate gear,
Using said structure, deceleration twice is reached by two-stage gear drive and increases the purpose turned round.The internally threaded sleeve 4 of screw rod 3 and one
Threaded one end coordinates and leaves the movement travel of internally threaded sleeve 4, and a straight line stretches push rod 6 is slidably fitted in internally threaded sleeve 4
The other end in and it is overhanging, the overhanging end of the linear telescopic push rod 6 sets roller 9, and overhanging section of linear telescopic push rod 6 upper to cover
There is a compression spring 5.The linear telescopic push rod 6 is provided with the bar hole 6a axially extended, and the internally threaded sleeve 4 is set
The bar hole 6a that inserts on linear telescopic push rod 6 of radial peg 18 formed circumferentially positioned, radial peg 18 and bar hole 6a slips are matched somebody with somebody
Close.The length of the bar hole 6a is more than the compress variation for the compression spring 5 being enclosed on linear telescopic push rod 6, and use is this
Structure, the axial thrust of internally threaded sleeve 4 are all transmitted by compression spring 5.Roller 9 on the linear telescopic push rod 6
Upper surface and the lower end guide face contacts of guide plate 7 being fixed on mission case and it can be rolled along the spigot surface of guide plate 7.
The overhanging end of the linear telescopic push rod 6 may also set up a roller bracket 8, and the roller 9 is supported on roller branch by lateral pin 8b
Frame 8, make roller 9 under the drive of linear telescopic push rod 6 along the slope on the lower end spigot surface and park pawl 11 of guide plate 7
11b is rolled, and drives 11 free end motion of park pawl, and the roller bracket 8 is rolled by roller 9 and guide plate 7 to be coordinated, rolling
It is rolling friction between son 9 and the slide guide face of guide plate 7, it is smaller using this structure roller 9 and slope 11b abrasions, it can carry
High guide plate 7 and roller bracket 8 use birthday noodle, so as to extend the service life of whole halting mechanism.Using rolling friction
It is easy to transmit larger side force, being capable of the larger reaction force that is applied by slope 11b of carrier roller support 8.Preferably,
The roller bracket 8 can be a U-shaped part, and an installation side plate 8a, a flanging of the U-shaped part are fixed in two flanging upper ends of the U-shaped part
It is fixedly connected with compression spring 5, upper and lower lateral pin 8b is set respectively on the roller bracket 8, described lateral pin 8b one end is supported on U-shaped
Part stage casing bottom, the lateral pin 8b other ends are supported on installation side plate 8a, each self installation roller 9 on two lateral pin 8b, wherein,
Lower end spigot surface of the upper roller 9 along guide plate 7 rolls, and lower roller 9 rolls along the upslope face 11b of park pawl 11.Lower lateral pin 8b
On roller 9 and slope 11b between be rolling friction, between roller 9 and slope 11b be rolling friction on lower lateral pin 8b,
Using this structure, lateral pin 8b can effectively improve lateral pin 8b rigidity and service life, guide plate using two supports structure
7th, slope 11b, linear telescopic push rod 6 wear smaller, can improve slope 11b, guide plate 7, linear telescopic push rod 6 and use the longevity
Life, so as to extend the service life of whole halting mechanism, is also allowed for transmitting larger side force using rolling friction, can carried
The larger reaction force that roller bracket 8 is applied by slope 11b.The tail end of the park pawl 11 is fixing end, and this is fixed
End is hinged on mission case by lock pin 13, and the head end of the park pawl 11 is free end, the bottom of the free end
Provided with the blade tooth 11a extended downwardly, the top of the free end, which is provided with to roll for roller 9, drives 11 free end motion of park pawl
Slope 11b, the slope 11b low side correspond to the tail end of park pawl 11, the slope 11b and the axis of park pawl 11
Between angle be 20 30 °, roller 9 slope roll cooperation can also play reinforcement effect, the less parking of output torque can be made
Motor meets requirement.Preferably, the slope 11b includes an initial ramp face 11ba, transition bench stage 11bb, back segment
Slope 11bc, the initial ramp face 11ba are by transition bench stage 11bb to back segment slope 11bc rounding ofves.Set
Initial ramp face 11ba.Roller 9 in the sliding phase on initial ramp face 11ba, transition bench stage 11bb, park pawl 11
Blade tooth 11a is not inserted into teeth groove, and the rotary resistance suffered when rotating of park pawl 11 is smaller, by setting transition bench stage 11bb energy
Enough in the case of the movement small distance of roller bracket 8 realizes that park pawl 11 overcomes less rotary resistance, there is blade tooth 11a
Larger stroke, roller 9 cross transition bench stage 11bb when back segment slope 11bc is slided, the blade tooth 11a of park pawl 11
The locking power in larger turning circumference direction can be overcome under smaller stroke, the locking power is advantageous to blade tooth 11a insertion teeth groove
The blade tooth 11a that the free end of park pawl 11 is set is intermeshed with teeth groove on parking ratchet wheel 12, due in a parking operation
In, the decrement of compression spring 5 is certain, and the elastic potential energy of storage is certain, also can be by more elastic potential energy using this structure
The locking action for blade tooth 11a insertion teeth groove is distributed, improves the reliability of parking.The parking ratchet wheel 12 passes through key or flower
The output shaft of key and speed changer is circumferentially fixed, and the parking ratchet wheel 12 can also pass through the intermediate rotary shaft of key or spline and speed changer
It is circumferentially fixed, the teeth groove for being evenly distributed in some blade tooth 11a for park pawl 11 and inserting of the parking ratchet wheel 12, the change
Fast device casing is corresponding with the free end of park pawl 11 provided with a unlocking resetting device, and the unlocking resetting device is a return
Spring 10, described one end of return spring 10 are acted in the mounting hole of the free end of park pawl 11, and other end acts on a bullet
On spring abutment, the spring base is fixedly connected with mission case, and roller 9 applies in slope 11b rolling processes to slope 11b
One is driven the power that park pawl 11 rotates around the hinged end of park pawl 11, and this, which is made every effort to promote, compresses the return spring 10, is set
After unblock resetting structure can make roller 9 withdraw slope 11b, park pawl 11 is rotated return and nibble blade tooth 11a slave phases
The teeth groove of conjunction is withdrawn from.
When carrying out parking using such scheme, parking motor 1 receives the electric signal of shift handle output, parking by wire harness
For motor 1 under the control of electric signal, output shaft 1a output torques, output torque passes to the input gear of reduction gear 2
19, after the reduction gear 2 slows down and increases torsion, the output torque of input gear 19 of reduction gear 2 passes to screw rod
3, the gyration of screw rod 3 is converted to internally threaded sleeve 4 and moved along a straight line, and interior spiral shell can be realized by the forward and backward of controlled motor
The linear motion linear reciprocating motion of line sleeve pipe 4, the linear reciprocating motion that internally threaded sleeve 4 moves along a straight line pass to compression spring 5,
Compression spring 5 is compressed passes to roller bracket 8 by thrust afterwards.When hanging park position, the side of roller bracket 8 passes through roller branch
The roller 9 free to rotate being hinged on frame 8 rolls with slope 11b to be coordinated, and roller 9 rolls engagement process in slope 11b
In to slope 11b roll coordinate apply the power for driving park pawl 11 to be rotated around the hinged end of park pawl 11, roller 9 and
Slope 11b rolls cooperation and plays reinforcement effect, and roller 9 is slided on initial ramp face 11ba, transition bench stage 11bb, stayed
The blade tooth 11a of car ratchet 11 is not inserted into teeth groove, and the rotary resistance suffered when rotating of park pawl 11 is smaller, and roller bracket 8 moves
In the case of small distance realizes that park pawl 11 overcomes less rotary resistance, make blade tooth 11a that there is larger stroke, roller 9
Transition bench stage 11bb is crossed when back segment slope 11bc is slided, the blade tooth 11a of park pawl 11 can be under smaller stroke
Overcome the locking power in larger turning circumference direction, the locking power is advantageous to the freedom of blade tooth 11a insertion teeth groove park pawl 11
The blade tooth 11a set is held to be intermeshed with teeth groove on parking ratchet wheel 12, the locking of parking ratchet wheel 12, so as to realize the lock of speed changer
Only.When blade tooth 11a acts on the tooth top of parking ratchet wheel 12, tooth top blocks blade tooth 11a, is not linked into park position（False P shelves）When, pressure
Contracting spring 5 acts on one end stroke of internally threaded sleeve 4 as when normal put into gear, and acts on the one end of roller bracket 8
Stroke be less than blade tooth 11a directly engaged with teeth groove on parking ratchet wheel 12 in the case of stroke, now the internal reservoir of compression spring 5 compared with
Excess resilient potential energy in the case of blade tooth 11a directly engages with teeth groove on parking ratchet wheel 12 is more after blade tooth 11a cunnings streak ratchet top
Remaining elastic potential energy release, drives roller bracket 8 to move forward, and then drives park pawl 11 to rotate, and makes blade tooth 11a and parking
Teeth groove is intermeshed on ratchet 12, completes the locking of parking ratchet wheel 12, sets compression spring 5 to absorb the shake of whole mechanism
It is dynamic, moreover it is possible to blade tooth 11a is persistently bonded with teeth groove and then reduce noise, the opposite side of roller bracket 8 is in carrier roller support
Rolled on the guide plate 7 of 8 side forces, the reaction force applied for carrier roller support 8 by slope 11b, prevent roller
The laterally offset of support 8, make the moving direction of roller bracket 8 and straight line output end axially consistent.When halting mechanism exits P shelves, stay
Vehicle motor 1 reversely rotates to be delivered on screw rod 3 by the deceleration increasing torsion of reduction gear 2, and internally threaded sleeve 4 is dropped back, compression
The elastic force that spring 5 is applied to roller bracket 8 reduces, and park pawl 11 can be exited under the returning place force effect of unblock resetting structure and stayed
The gear grooved of car ratchet 12, parking ratchet wheel 12 can freely rotate the purpose for reaching and exiting P shelves.Halting mechanism is complete during parking
Portion provides shifting power by motor, and parking motor 1 is connected by wire harness and overall wire sheaves with gear shifting handle, and what it was transmitted is electricity
Signal does not have drag-line or other transmission mechanisms, feels all, to improve driver during any operating mode driver parking
Parking comfort level；Because the transmission of halting mechanism and gear shifting handle is electric signal, relative to manual parking mechanism do not have drag-line and
The transmission of berth-changing strength, so cancelling the part and structure of the regulation berth-changing strength designed originally, reduce design difficulty and reduce
Parts, have saved that space is few, compact-sized, eliminate the drag-line between gear shifting handle and halting mechanism, the position of gear shifting handle
Putting does not influence the arrangement of halting mechanism, improves the flexibility of halting mechanism arrangement.
Using foregoing invention, its space-consuming is few, compact-sized, is easy to halting mechanism to design and arrange, moreover it is possible to carry
Rise the comfort level of parking operation.
Claims (9)
1. a kind of automatic transmission electronic parking mechanism, including parking motor（1）, parking ratchet wheel（12）And park pawl（11）,
It is characterized in that：The parking motor（1）It is fixed on mission case, parking motor（1）Rotating shaft pass through reducing gear
Take turns mechanism（2）With a screw rod（3）Connection, the screw rod（3）With an internally threaded sleeve（4）Threaded one end coordinates and leaves internal thread
Sleeve pipe（4）Movement travel, a straight line stretches push rod（6）It is slidably fitted in internally threaded sleeve（4）The other end in and overhanging, institute
State linear telescopic push rod（6）Overhanging end set roller（9）, linear telescopic push rod（6）Overhanging section on be cased with a compression spring
（5）, the linear telescopic push rod（6）On roller（9）Upper surface and the guide plate that is fixed on mission case（7）Under
Hold guide face contacts and can be along guide plate（7）Spigot surface roll, the park pawl（11）Tail end be fixing end, this is fixed
End is hinged on mission case, the park pawl（11）Head end be free end, the bottom of the free end is provided with to downward
The blade tooth stretched（11a）, the top of the free end, which is provided with, supplies roller（9）Park pawl is driven in rolling（11）The slope of free end motion
Face（11b）, the slope（11b）Low side correspond to park pawl（11）Tail end, the parking ratchet wheel（12）It is circumferentially fixed
In the rotating shaft of speed changer shafting, parking ratchet wheel（12）Be evenly distributed in and some supply park pawl（11）Blade tooth（11a）Insertion
Teeth groove, the mission case is provided with a unlocking resetting device and park pawl（11）Free end it is corresponding.
2. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The linear telescopic push rod
（6）Overhanging end set a roller bracket（8）, the roller（9）Pass through lateral pin（8b）It is supported on roller bracket（8）, make roller
（9）In linear telescopic push rod（6）Drive under along guide plate（7）Lower end spigot surface and park pawl（11）On slope
（11b）Roll, and drive park pawl（11）Free end motion.
3. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The linear telescopic push rod
（6）Overhanging end set a roller bracket（8）, the roller bracket（8）It is upper that upper and lower lateral pin is set respectively（8b）, two lateral pins（8b）
Upper each self installation roller（9）, wherein, upper roller（9）Along guide plate（7）Lower end spigot surface roll, lower roller（9）Along parking spine
Pawl（11）Upslope face（11b）Roll.
4. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The linear telescopic push rod
（6）It is provided with the bar hole axially extended（6a）, the internally threaded sleeve（4）The radial peg of setting（18）Insert linear telescopic
Push rod（6）On bar hole（6a）Formed circumferentially positioned.
5. automatic transmission electronic parking mechanism according to claim 4, it is characterised in that：The bar hole（6a）Length
Degree, which is more than, is enclosed on linear telescopic push rod（6）On compression spring（5）Compress variation.
6. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The reduction gear
（2）Including support plate（23）, input gear（19）, deceleration duplicate gear, output gear（22）, the support plate（23）It is provided with
One jackshaft（24）, the deceleration duplicate gear is slidably fitted in jackshaft（24）On, the screw rod（3）Rotatably it is supported on
Support plate（23）On, the output gear（22）With screw rod（3）Connect firmly and with the little gear of deceleration duplicate gear（21）Engagement, is stayed
Vehicle motor（1）With support plate（23）It is fixedly connected, parking motor（1）Output shaft pass through support plate（23）With input gear（19）
Connect firmly, the input gear（19）With the gear wheel of duplicate gear（20）Engagement.
7. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The slope（11b）With
Park pawl（11）Angle is 20 30 ° between axis.
8. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The slope（11b）Bag
Include an initial ramp face（11ba）, the transition bench stage（11bb）, back segment slope（11bc）, the initial ramp face（11ba）It is logical
Spend the transition bench stage（11bb）To back segment slope（11bc）Rounding off.
9. automatic transmission electronic parking mechanism according to claim 1, it is characterised in that：The unlocking resetting device is
One return spring（10）, the return spring（10）One end acts on park pawl（11）In the mounting hole of free end, in addition one
End is acted on a spring base, and the spring base is fixedly connected with mission case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640269.XA CN107499292A (en) | 2017-07-31 | 2017-07-31 | automatic transmission electronic parking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640269.XA CN107499292A (en) | 2017-07-31 | 2017-07-31 | automatic transmission electronic parking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107499292A true CN107499292A (en) | 2017-12-22 |
Family
ID=60690402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640269.XA Pending CN107499292A (en) | 2017-07-31 | 2017-07-31 | automatic transmission electronic parking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107499292A (en) |
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| CN108340892A (en) * | 2018-03-13 | 2018-07-31 | 力帆实业(集团)股份有限公司 | Automobile abrupt slope starting landslide-proofing device |
| CN108422979A (en) * | 2018-03-13 | 2018-08-21 | 力帆实业(集团)股份有限公司 | Automotive wheel one-directionally rotates control mechanism |
| CN108506472A (en) * | 2018-03-23 | 2018-09-07 | 浙江合众新能源汽车有限公司 | P grades of control systems of pure electric automobile |
| CN110081169A (en) * | 2019-05-13 | 2019-08-02 | 艾菲发动机零件（武汉）有限公司 | Automatic transmission electric parking mechanism |
| CN112032299A (en) * | 2019-06-03 | 2020-12-04 | 沃尔沃汽车公司 | Parking lock device |
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| US20100078274A1 (en) * | 2008-09-19 | 2010-04-01 | Jonathan Leslie Christopher Jackson | Parking brake mechanism |
| DE102010053861A1 (en) * | 2010-12-08 | 2012-06-14 | Schaeffler Technologies Gmbh & Co. Kg | parking lock |
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| CN108340892A (en) * | 2018-03-13 | 2018-07-31 | 力帆实业(集团)股份有限公司 | Automobile abrupt slope starting landslide-proofing device |
| CN108422979A (en) * | 2018-03-13 | 2018-08-21 | 力帆实业(集团)股份有限公司 | Automotive wheel one-directionally rotates control mechanism |
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| CN108506472A (en) * | 2018-03-23 | 2018-09-07 | 浙江合众新能源汽车有限公司 | P grades of control systems of pure electric automobile |
| CN110081169A (en) * | 2019-05-13 | 2019-08-02 | 艾菲发动机零件（武汉）有限公司 | Automatic transmission electric parking mechanism |
| CN112032299A (en) * | 2019-06-03 | 2020-12-04 | 沃尔沃汽车公司 | Parking lock device |
| US11371608B2 (en) | 2019-06-03 | 2022-06-28 | Volvo Car Corporation | Park lock arrangement |
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