CN106931161B - A kind of hydraulic halting mechanism and automatic transmission - Google Patents
A kind of hydraulic halting mechanism and automatic transmission Download PDFInfo
- Publication number
- CN106931161B CN106931161B CN201511023371.2A CN201511023371A CN106931161B CN 106931161 B CN106931161 B CN 106931161B CN 201511023371 A CN201511023371 A CN 201511023371A CN 106931161 B CN106931161 B CN 106931161B
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- parking
- push rod
- locking
- manual
- hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
- F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The present invention provides a kind of hydraulic halting mechanism and automatic transmission, are related to automobile technical field, make automobile that can not enter non-parked state from parked state to solve the problem of that hydraulic halting mechanism breaks down.The hydraulic halting mechanism, including hydraulic cylinder, the parking piston being located in the hydraulic cylinder and the automatic locking mechanism for capableing of locking and the unlock parking piston, the parking piston is connected with the push rod for being equipped with parking cam, further includes the manual unlocking device for driving the push rod to move along a straight line along its axial direction.Due to manual unlocking device can driving push rod move along a straight line along its axial direction, therefore, it can break down in the component of driving piston linear movement in hydraulic halting mechanism provided by the invention, parking cam can be made to separate with parking arm by manual unlocking device, hence into non-parked state.Hydraulic halting mechanism provided by the invention is used for automobile technical field.
Description
Technical field
The present invention relates to automobile technical field, in particular to a kind of hydraulic halting mechanism and automatic transmission.
Background technique
Automatic transmission is a kind of automotive transmission that can change gear ratio automatically in vehicle travel process.For
Guarantee safety of the automobile in taxiing procedures, will be installed a set of halting mechanism, in automatic transmission generally to guarantee automobile
It timeless in the least can be parked on certain position even abrupt slope.
Currently, common halting mechanism is hydraulic halting mechanism, including hydraulic parking push rod assembly, parking arm and it is set in defeated
Enter the parking gear on axis；The structure of hydraulic parking push rod assembly is as shown in Figure 1, it mainly includes hydraulic cylinder 1 and is located at liquid
Parking piston 3 in cylinder pressure 1, parking piston 3 are connected on parking push rod 2, and one end of the stretching hydraulic cylinder of parking push rod 2 is arranged
There is the parking cam 4 for being in contact with parking arm；The through-hole for installing piston lock pin 5 is offered on hydraulic cylinder 1, it is hydraulic
Electromagnet 6 outside cylinder 1, piston lock pin 5 and electromagnet 6 constitute automatic locking mechanism.
When automobile is in parked state, electromagnet no power, 5 locking parking piston 3 of piston lock pin makes parking piston
3, not along the axial movement of hydraulic cylinder 1, maintain parking cam 4 and parking arm contact, and parking arm makes parking gear stop transmission, from
And the power transmission in automatic transmission is interrupted, guarantee that automobile can be in parked state for a long time；And when automobile will release parking
When state, by being powered to electromagnet 6, push electromagnet 6 by piston lock pin 5, so that parking piston 3 can be along hydraulic cylinder
1 axial movement makes parking piston 3 to the left side of hydraulic parking push rod assembly as is shown in fig. 1 by the pressure of hydraulic oil
Mobile, parking cam 4 is disengaged with parking arm at this time, and parking gear does not have the compacting of parking arm and transmission shaft is driven to rotate,
So that automatic transmission is able to carry out power transmission, releases the parked state of automobile.
Although above-mentioned hydraulic halting mechanism can be good at realizing the parking function of automobile, when in hydraulic halting mechanism
When the component that piston linear can be driven to move breaks down, automobile can not enter non-parked state from parked state.
Summary of the invention
In view of this, the present invention is directed to propose a kind of hydraulic parking push rod assembly, to solve in hydraulic parking push rod assembly
Can drive piston linear move component break down when, automobile can not from parked state enter non-parked state the problem of.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of hydraulic halting mechanism, including hydraulic cylinder, the parking piston being located in the hydraulic cylinder and can locking and
The automatic locking mechanism of the parking piston is unlocked, it further includes using that the parking piston is connected with the push rod for being equipped with parking cam
In the manual unlocking device for driving the push rod to move along a straight line along its axial direction.
Preferably, the manual unlocking device includes manual part and can drive under the control of the manual part
Running part of the push rod along its axial linear movement.
Preferably, the manual unlocking device is cam mechanism, gear and rack teeth mechanism or turbine and worm mechanism；
When the manual unlocking device is the cam mechanism, the cam mechanism includes as the manual part
Manual cam and protrusion as the running part, the protrusion are located on the push rod, and the protrusion with it is described manually
The contoured surface of the profile face contact of cam, the manual cam is equipped with locking plane, when manually rotating the manual cam,
The manual cam is able to drive the protrusion and moves along the push rod direction, to drive the push rod mobile, makes described
The parking cam and parking arm on push rod are segregated into non-parking.
When the manual unlocking device is the gear and rack teeth mechanism, the gear and rack teeth mechanism includes being used as the hand
The manual gear of part and the rack gear as the running part are moved, the rack gear is engaged with the manual gear, and the tooth
Item is located on the push rod, and the manual gear is engaged with the rack gear；
When the manual unlocking device is the turbine and worm mechanism, the turbine and worm mechanism includes being used as the hand
It moves the manual worm of part and the turbine as the running part turns with can be converted into rotary motion to move along a straight line
It changes planes structure, the turbine is engaged with the manual worm, and the turbine is connected by the switching mechanism with the push rod.
Preferably, the push rod includes that parking push rod and the unlock for connecting the parking push rod and parking piston push away
Bar, the parking push rod and the unlock push rod are hinged, and the parking cam is located on the parking push rod, described to stay
One end that vehicle push rod is connected with the unlock push rod is equipped with connecting hole, and the running part is located at the unlock push rod and stays with described
The connected one end of vehicle push rod, one end that the unlock push rod is connected with the parking push rod pass through the connecting hole, make described convex
It rises and the manual cam contact.
Further, the inside of the hydraulic cylinder is separated into the first variable chamber and the second variable chamber by the parking piston
Room, the automatic locking mechanism are located in first variable chamber, one for unlocking push rod and being connected with the parking piston
End is located at the side that the parking piston is located at the second variable chamber；Wherein,
The first flexible connector is equipped in first variable chamber, to push the parking piston to make the parking cam
It is in parked state；Second variable chamber is connected to the oilhole being provided on the hydraulic cylinder, with variable described second
It pushes unlock push rod described in the parking piston driving mobile when being passed through hydraulic oil in chamber, is stayed described in the unlock push rod drive
The parking cam on vehicle push rod is separated with parking arm.
Further, the automatic locking mechanism includes shank and removable locking system；One end of the shank is
The connecting pin being connected with the parking piston, the other end are free end；Lock identical with keyway arrangements is offered on the shank
Only groove, offers guide groove on the removable locking system, the guide groove include for make the free end pass through it is described can
The guide part of mobile locking system, and the locking protrusion that can be engaged with the locking groove in non-parked state；
In parked state, the removable locking system stops the free end, and the parking piston is made to keep locking；
In non-parked state, the removable locking system is mobile to make the free end pass through the guide part, and the locking is convex
Portion engages with the locking groove.
It is furthermore preferred that the removable locking system includes locking system and actuating device of the linear motion, the guide groove is opened
It is located on the locking system；Wherein,
The actuating device of the linear motion is located at the outside of the hydraulic cylinder, one end of the locking system and the straight line
The power output end in contact of kinematic driving unit, the other end protrude into the first variable chamber in the hydraulic cylinder, the locking
Device is connected with the outer wall of the hydraulic cylinder by the second flexible connector with one end that the power output end can contact；
The actuating device of the linear motion pushes the locking system mobile by the power output end, makes the freedom
End can pass through the guide part in non-parked state, and second flexible connector drives the lock in non-parked state
Locking apparatus is mobile, passes through the locking protrusion with the locking groove and engages.
Preferably, the inner wall that the hydraulic cylinder is located at the first variable chamber is equipped with mounting hole；The locking system includes
Forced section, work department and the mounting portion that can be mounted in mounting hole being sequentially connected；The forced section can be with the power
End in contact is exported, the guide groove is provided with the work department.
Compared with the existing technology, hydraulic halting mechanism provided by the invention has the advantage that
In hydraulic halting mechanism provided by the invention, the parking piston in hydraulic cylinder is connected with push rod, and due to solving manually
Locking device can driving push rod along itself axially move along a straight line, when the manual control manual unlocking device, manual unlocking
Device can driving push rod along its axial movement, to drive push rod mobile, make parking cam and parking arm on push rod separate into
Enter non-parking；Therefore, in hydraulic halting mechanism provided by the invention, the component malfunction that piston linear can be driven to move,
When so that automobile can not enter non-parked state from parked state, it can use manual unlocking device and push push rod that parking is driven to push away
Bar is mobile, so that the parking cam being located on parking push rod is separated with parking arm, so that automobile be made to enter non-parking.
Another object of the present invention is to propose a kind of automatic transmission, is broken down, made with solving hydraulic halting mechanism
Obtain the problem of automobile can not enter non-parked state from parked state.In order to achieve the above objectives, the technical scheme is that this
What sample was realized:
A kind of automatic transmission is provided with hydraulic halting mechanism described in above-mentioned technical proposal in the automatic transmission.
Preferably, the shell of the automatic transmission and the outer wall of hydraulic cylinder in the hydraulic halting mechanism are connected in one
It rises.
Compared with the existing technology, automatic transmission of the present invention has following advantage:
Hydraulic halting mechanism described in the automatic transmission and above-mentioned technical proposal is possessed compared with the existing technology
Advantage is identical, and details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the hydraulic halting mechanism of the prior art；
Fig. 2 is structural schematic diagram of the hydraulic halting mechanism of the present embodiment in parked state；
Fig. 3 is structural schematic diagram of the hydraulic halting mechanism of the present embodiment in non-parking device；
Fig. 4 is the structural schematic diagram of parking cam and unlock push rod in parked state in the present embodiment；
Fig. 5 is the structural schematic diagram of parking cam and unlock push rod in non-parked state in the present embodiment；
Fig. 6 is structural schematic diagram of the locking system in parked state in the present embodiment；
Fig. 7 is structural schematic diagram of the locking system in non-parked state in the present embodiment；
Description of symbols:
1- hydraulic cylinder, 10- oilhole, the first variable chamber of 11-；
The first flexible connector of 110-, the second variable chamber of 12-, 2- parking push rod；
The first gasket of 21-, the second gasket of 22-, 23- third flexible connector；
3- parking piston, 4- parking cam, 5- piston lock pin；
6- electromagnet, 7- automatic locking mechanism, 71- shank；
710- locking groove, 72- move locking system, 720- guide groove；
721- actuating device of the linear motion, 722- locking system, the second flexible connector of 723-；
81- unlocks push rod, the manual cam of 82-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 2 and Fig. 3 are please referred to, the embodiment of the invention provides a kind of hydraulic halting mechanism, including hydraulic cylinder 1, is located at liquid
Parking piston 3 in cylinder pressure 1 and the automatic locking mechanism 7 for capableing of locking and unlock parking piston 3, parking piston 3 be equipped with
The push rod of parking cam 4 is connected, and further includes the manual unlocking device to move along a straight line for driving push rod along its axial direction.
In the course of work, when the component malfunction that can make driving piston linear movement in hydraulic halting mechanism, so that
Automobile can not from parked state enter non-parked state when, by manual control manual unlocking device can driving push rod along its axis
To moving along a straight line, to drive push rod mobile, separate the parking cam 4 being located on parking push rod 2 with parking arm, thus into
Enter non-parking.
By the above-mentioned course of work it is found that parking piston 3 in hydraulic halting mechanism provided in this embodiment, in hydraulic cylinder
Be connected with push rod, and due to manual unlocking device can driving push rod along itself axially move along a straight line, when manual control should
When manual unlocking device, manual unlocking device can driving push rod made on push rod along its axial movement with driving push rod mobile
Parking cam 4 and parking arm are segregated into non-parking；Therefore, in hydraulic halting mechanism provided in this embodiment, work can be driven
The component malfunction of linear motion is filled in, when so that automobile can not enter non-parked state from parked state, can use manually
It is mobile that tripper pushes push rod to drive parking push rod, so that the parking cam being located on parking push rod is separated with parking arm, from
And automobile is made to enter non-parking.
It should be noted that there are many concrete form of the manual unlocking device in above-described embodiment, as long as can push
Bar moves along its axis, and separates the parking cam 4 on parking push rod 2 with parking arm, hence into non-parking.
In general, manual unlocking device include manual part and can under the control of manual part driving push rod edge
The running part of its axial linear movement.Due to running part can under the control of manual part driving push rod along its axially transport
It is dynamic, therefore, can by hand-operated sub-control running part, so that the parking cam 4 on parking push rod is separated with parking arm, thus
Into non-parking.
And the manual unlocking device in above-described embodiment can choose cam mechanism, gear and rack teeth mechanism or turbine and worm machine
Structure, but it is not excluded for other mechanisms that may be implemented.
Fig. 4 and Fig. 5 are please referred to, when manual unlocking device is the cam mechanism, cam mechanism includes manual part
Manual cam 82 and the protrusion as running part, protrusion are located on push rod, and the profile face contact of protrusion and manual cam,
When manually rotating the manual cam 82, manual cam 82 is able to drive protrusion and moves along push rod direction, to drive push rod
It is mobile, so that parking cam 4 and parking arm on push rod is segregated into non-parking.Since manual cam 82 was rotated manually controlling
Cheng Zhong, it is mobile that manual cam 82 can push push rod to do reciprocating linear, therefore, when manual cam turns to certain phase, manually
It is mobile to a direction that cam can not just continue to press on push rod, but moves push rod to the opposite direction of original moving direction
Dynamic, the parking cam 4 on such push rod can move closer to parking arm again；In other words, when manual cam is in rotation certain time
Afterwards, parked state will be come back to from non-parked state.In order to maintain non-parked state, the contoured surface of manual cam 82
It is equipped with locking plane, so that unlock push rod 81 can be locked after the contact point of manual cam and protrusion is in the locking plane
It can not be only returned to initial position, ensure that automobile is in non-parked state in this way.
When manual unlocking device is gear and rack teeth mechanism, gear and rack teeth mechanism includes the manual gear as manual part
With the rack gear as running part, rack gear is engaged with manual gear, and rack gear is located on push rod, and manual gear is engaged with rack；
Since rack gear is located on push rod, and manual gear is engaged with rack, therefore, when manually controlling manual gear rotation, manually
Gear can stir rack gear by engagement and move along a straight line, and since rack gear is located on push rod, when rack gear moves along a straight line
During, it will be able to drive push rod to move along a straight line, and in order to enable push rod to be axially moved along it, it can be by adjusting rack gear
The position and direction being located on push rod guarantee the axial movement that rack gear is able to drive push rod along push rod, to make staying on push rod
Vehicle cam can be separated with parking arm, into non-parking.
When manual unlocking device is turbine and worm mechanism, turbine and worm mechanism includes the manual worm as manual part
And as running part turbine and rotary motion can be converted into the switching mechanism of linear motion, turbine and manual worm
Engagement, turbine are connected by switching mechanism with push rod.Since rotary motion can be converted into moving along a straight line by switching mechanism, because
This, when manually controlling manual worm rotation, manual worm drives turbine to carry out rotary motion, but switching mechanism can be by turbine
Rotary motion is converted into moving along a straight line, and passes to push rod, so that push rod is mobile, to enable parking cam on push rod and stay
Vehicle arm separation, into non-parking.
Moreover, there are many form of switching mechanism, such as common screw body, it is also possible to turbine and is located on push rod
Rack gear engagement so as to stir rack gear during rotary motion mobile for turbine so that rack linear moves, rack linear movement
When just to will drive push rod mobile, so that the parking cam on push rod is separated with parking arm, into non-parking.
In addition, the push rod in above-described embodiment can specifically include parking push rod 2 and for connecting parking push rod 2 and staying
The unlock push rod 81 of vehicle piston 3, parking cam 4 are located on parking push rod 2, one end that parking push rod 2 is connected with unlock push rod 81
Equipped with connecting hole, running part is located at one end that unlock push rod 81 is connected with parking push rod 2, unlock push rod 81 and parking push rod 2
Connected one end passes through connecting hole, taps running part and hand-operated and touches.It is connected due to parking push rod 2 with unlock push rod 81
One end is equipped with connecting hole, and running part is located at one end that unlock push rod 81 is connected with parking push rod 2, so, unlock push rod 81
The one end being connected with parking push rod 2 passes through connecting hole, ensure that power can be driven to running part by part manually, manual in this way
Part can drive running part to move along 2 direction of parking push rod, to push unlock in the case where manual control
Push rod 81 is mobile, and unlocks push rod 81 for connecting parking push rod 2 and parking piston 3, therefore, unlocks the same of the movement of push rod 81
When, it will drive the movement of parking push rod 2, the parking cam on parking push rod 2 separated with parking arm, into non-parking.
Moreover, because one end that unlock push rod 81 is connected with parking push rod 2 passes through connecting hole, in this way when manual part pushes
When unlocking the movement of push rod 81, connecting hole can prevent unlock push rod 81 from shaking to damage caused by unlock push rod 81, reduce understanding
Lock the service life of push rod 81；Moreover, because one end of unlock push rod 81 and parking piston 3 are rigid connection, if unlock pushes away
Bar 81 shakes in moving process, can make parking push rod 2 and unlock 3 and of connection and parking piston between push rod 81
Unlock push rod 81 between connection go wrong, lead to not manual unlocking, separate parking cam 4 and parking arm can not with into
Enter non-parking.Therefore, hydraulic halting mechanism provided in this embodiment pushes away unlock by the way that connecting hole is arranged on parking push rod 2
One end that bar 81 is equipped with protrusion passes through limit hole, not only prevents the shaking of unlock push rod 81 and makes to the service life of unlock push rod 81
At influence, but also can prevent unlock push rod 81 from failing, separate parking cam 4 and parking arm can not to enter and non-stay
Vehicle.
In addition, the connection type between parking push rod 2 and unlock push rod 81 is varied, preferably articulated manner is connected,
That is parking push rod 2 and unlock push rod 81 is flexibly connected；Although unlock push rod 81 in this way is shaken in moving process,
It can be flexibly connected by parking push rod 2 and unlock push rod 81, alleviate unlock push rod 81 and parking push rod 2 is produced during shaking
Raw mechanics influence improves parking push rod 2 and unlocks the stability of push rod 81.
Specifically, above-mentioned parking push rod 2 and the hinged implementation of unlock push rod 81 can be with are as follows: unlock push rod 81 and parking
Hinged one end of push rod 2 (i.e. unlock push rod 81 is equipped with raised one end) is equipped with unlock connecting hole, and the hole wall of connecting hole is equipped with
Limit connecting hole；After limiting groove is protruded into unlock push rod 81 and the hinged one end of parking push rod 2, unlock is passed through by connector and is connected
Hole and limit connecting hole are connect, so that parking push rod 2 and unlock push rod 81 are hinged.But it should be recognized that parking push rod 2 and unlock
The hinged implementation of push rod 81 is varied, but is not limited only to this.
It is worth noting that, piston linear can be driven to move in the hydraulic halting mechanism provided in above-described embodiment
Component malfunction when so that automobile can not enter non-parked state from parked state, is unlocked by controlling part drive manually
Push rod 81 is mobile, so that parking cam 4 and the separation of parking arm on parking push rod 2, so that automobile is made to enter non-parked state, and
And since unlock push rod 81 connects the parking piston 3 and parking push rod 2 of hydraulic halting mechanism, in the normal work of hydraulic halting mechanism
When making, unlock push rod 81 can also play the role of power transmission as the connector of parking piston 3 and parking push rod 2.
In order to which apparent explanation is using the process of the how manually implemented parking of manual unlocking device to non-parking, below
When illustrating that manual unlocking device is cam mechanism in conjunction with Fig. 2 and Fig. 3, manual unlocking device makes how to realize from parking to non-parking
Working principle.
Fig. 2 and Fig. 3 are please referred to, which includes that oilhole 10 is offered on hydraulic cylinder 1, and parking piston 3 is by liquid
The inside of cylinder pressure 1 is separated into the first variable chamber 11 and the second variable chamber 12, and automatic locking mechanism 7 is located at the first variable chamber
In 11, the side that parking piston 3 is located at the second variable chamber 12 passes through the parking push rod 2 of unlock push rod 81 and stretching hydraulic cylinder 1
It is connected, parking push rod 2 is equipped with parking cam 4；Wherein,
It is equipped with the first flexible connector 110 in first variable chamber 11, to push parking piston 3 to be in parking cam 4
Parked state；Second variable chamber 12 is connected to oilhole 10, so that parking piston 3 drives parking push rod 2 by unlock push rod 81
It is mobile, separate parking cam 4 with parking arm.
When non-parked state, 7 locking of automatic unlocking mechanism parking piston 3 living, the first flexible connector 110 is in compression shape
State；When needing parking, automatic unlocking mechanism 7 unlocks parking piston 3, and the first flexible connector 110 relies on compressive state at this time
Generated restoring force pushes parking piston 3 mobile to 12 direction of the second variable cavity, and parking piston 3 is pushed away by unlock
Bar 81 pushes parking push rod 2 mobile, makes parking cam 4 and parking arm contact on parking push rod 2, hence into parked state,
At this time automatic locking mechanism 7 can locking parking piston 3 so that automobile keeps parked state for a long time.
When needing to go to non-parked state from parked state, parking piston 3 is unlocked by automatic locking mechanism 7, then
It is passed through hydraulic oil into the second variable chamber 12 by oilhole 10, to push parking piston 3 to 11 place side of the first variable chamber
To movement, during this, the first flexible connector 110 is compressed by pistons, and parking piston 3 drives parking to push away by unlock push rod 81
Bar 2 is mobile, so that parking cam 4 is separated with parking arm, so that automobile be made to be detached from parked state.At this point, passing through automatic locking machine
7 locking parking piston 3 of structure, so that automobile maintains non-parked state.
And the automatic locking mechanism 7 and/or hydraulic oil supply in the above-mentioned hydraulic halting mechanism go wrong, make automobile without
When method is transitioned into non-parked state from parked state, it can use manual cam 82 and realize that automobile is transitioned into non-stay from parked state
Car state.
Specifically, being rotated as shown in figure 4, manually controlling manual cam with rotation direction shown in the arrow in Fig. 4, hand
The distance between the contoured surface of the basic circle center of circle moving cam in one's hands of moving cam 82 and the contact point of unlock push rod 81 are increasing,
In the case that manual cam position does not change, manual cam 82 can push unlock push rod 81 to drive parking push rod 2 to the
One variable cavity, 11 direction is mobile, separates parking cam 4 with parking arm, automobile is from parked state to non-parked state；
When the projection contacts in the locking plane and unlock push rod 81 on the contoured surface of manual cam 82, the position quilt of push rod 81 is unlocked
Locking, no longer drive parking push rod 2 are mobile to 11 direction of the first variable cavity, and automobile can be in non-for a long time at this time
Parked state.
And after automobile is adjusted to non-parked state from parking shape body by controlling manual cam 82, it hydraulic is stayed if above-mentioned
Automatic locking mechanism 7 and/or hydraulic oil supply in mechanism of car restore normal, when automobile needs parking, automatic locking mechanism 7
Parking piston 3 is unlocked, parking piston 3 is pushed by the first flexible connector 110, mobile to 12 direction of the second variable chamber
When, parking piston 3 can push the unlock movement of push rod 81 to move along a straight line, and manual cam 82 is straight in order to make unlock push rod 81
Line movement, manual cam 82 are rotated with rotation direction shown in the arrow in Fig. 5, are unlocked push rod 81 during this period and are pushed parking
Push rod 2 is mobile, makes parking cam 4 and parking arm contact, automobile is in parked state at this time, finally by automatic locking mechanism 7
Locking parking piston 3.
The course of work in hydraulic push rod assembly provided through the foregoing embodiment is it is found that hydraulic thrust provided in this embodiment
It is equipped with parking piston 3 in the hydraulic cylinder 1 of bar assembly and is capable of the automatic locking mechanism 7 of locking and unlock parking piston 3；Due to
The parking piston 3 is connected by unlock push rod 81 with the parking push rod 2 for being equipped with parking cam 4, and unlock raised on push rod and
The profile face contact of manual cam 82, therefore, manual cam 82, can be raised mobile by pushing when manual control rotates,
Make protrusion push unlock push rod 81 mobile, to drive parking push rod 2 to move, separates parking cam 4 with parking arm non-to enter
Parked state；Therefore, when automatic unlocking structure 7 breaks down, it will be able to push unlock 81 band of push rod using manual cam 82
Dynamic parking push rod 2 is mobile, so that parking cam 4 separates that automobile is made to enter non-parked state with parking arm.
Moreover, because the inside of hydraulic cylinder 1 can be divided into the first variable chamber 11 and the second variable chamber by parking piston 3
12, and the oilhole 10 opened up on the second variable chamber 12 and hydraulic cylinder is connected to, it under normal circumstances, can by oilhole 10 to second
Become in chamber 12 and be passed through hydraulic oil, to push parking piston 3 that parking cam 4 is made to be in non-parked state；When hydraulic oil supply exists
It breaks down when parked state, pushes unlock push rod 81 to drive parking push rod 2 mobile using manual cam, so that parking cam
4 separate with parking arm hence into non-parked state.
It should be noted that please referring to Fig. 1 and Fig. 2, there are many connection type of the parking cam 4 on parking push rod 2, such as
Be welded with the first gasket 21 and the second gasket on parking cam 4, parking piston 3 be located at the first gasket 21 and the second gasket 22 it
Between, and one end of parking piston 3 is connect with baffle by third flexible connector 23.
The structure of automatic locking mechanism 7 in above-described embodiment is varied, can be using in existing hydraulic halting mechanism
Automatic locking mechanism, automatic locking mechanism 7 as shown in Fig. 2-3 and Fig. 6-7 can also be used.
As Figure 2-3, which includes shank 71 and removable locking system 72；One end of shank 71
For the connecting pin being connected with parking piston 3, the other end is free end；Referring to Fig. 6, being offered on shank 71 and keyway arrangements phase
Same locking groove 710 moves and offers guide groove 720 on locking system 72, please refers to Fig. 3 and Fig. 7, and guide groove 720 includes using
In the guide part for making free end pass through removable locking system 72, and with can be with locking groove 710 in non-parked state
The locking protrusion of engaging；
Fig. 2 and Fig. 6 are please referred to, removable locking system 72 stops free end in parked state, keeps parking piston 3
Locking, when needing makes automobile enter non-parked state from parked state, removable locking system 72 is mobile to the right side of Fig. 6,
The free end for enabling shank 71 to have passes through the guide part in guide groove 720, and such parking piston 3 is by the second variable chamber
Hydraulic oil is passed through in 12, can be mobile to 11 direction of the first variable cavity, and the first flexible connector 110 is compressed, and stay
Vehicle piston 3 can drive parking push rod 2 mobile by unlock push rod 81, separate parking cam 4 with parking arm, and be detached from parking
State；Moreover, as shown in fig. 7, when the free end that shank 71 has pass through guide groove 720 in guide part for a period of time after, guide groove
Locking protrusion in 720 can engage with the locking groove 710 on shank 71, to prevent shank 71 mobile, so that and shank
The parking piston 3 of 71 connecting pin connection is locked up, and automobile is made to be in non-parked state for a long time.
Fig. 3 and Fig. 7 are please referred to, when needing makes automobile enter parked state from non-parked state, moves locking system
72 is mobile to the right side of Fig. 7, so that the locking groove 710 on shank 71 and being detached between the locking protrusion on guide groove 720 engages
State, so that shank 71 be made to be located at the guide part of guide groove 720, such first flexible connector 110 is using itself being compressed when institute
The resilient force parking piston 3 of accumulation is mobile to 12 direction of the second variable cavity, so that parking piston 3 be made to pass through unlock
Push rod 81 pushes parking push rod 2 mobile, so that parking cam 4 and parking arm contact, and reach parked state；In the process,
Shank 71 is also from the guide part extraction in guide groove 720, to be moved with parking piston 3 to 12 direction of the second variable cavity,
After the free end of shank 71 is extracted out from the guide part of guide groove 720, locking system 72 is moved to left side movement shown in Fig. 7, is made
It obtains guide groove 720 to be staggered with free end, shank 71 is stopped by removable locking system 72, so that automobile be made to keep parked state.
Specifically, please referring to Fig. 2 and Fig. 3, moving locking system 72 includes locking system 722 and linear motion driving dress
721 are set, guide groove 720 is provided on locking system 722；Wherein,
Actuating device of the linear motion 721 is located at the outside of hydraulic cylinder 1, one end of locking system 722 and the linear motion
The power output end in contact of driving device 721, the other end protrude into the first variable chamber 11 in hydraulic cylinder 1, locking system 722
It is connected with the outer wall of hydraulic cylinder 1 by the second flexible connector 723 with one end that power output end can contact.
Please continue to refer to Fig. 2 and Fig. 3, when automobile needs to enter from parked state non-parked state, linear motion driving
Device 721 pushes locking system 722 mobile by power output end, and free end is enable to pass through guiding in non-parked state
Portion, the second flexible connector 723 are compressed, and when free end passes through guide part, actuating device of the linear motion 721 retracts original at this time
Come position, and the power output end due to actuating device of the linear motion 721 and locking system 722 are only to contact and disconnected,
The outer wall of one end and hydraulic cylinder 1 that the second flexible connector 723 connection locking system 722 can be contacted with power output end, because
This, the second flexible connector 723 drives locking system 722 mobile by the restoring force generated by compression, makes locking protrusion and pin
The locking groove 710 of body 71 engages.Moreover, please referring to Fig. 6 and Fig. 7, why locking boss can block with locking groove 710
It closes, is the i.e. hatch frame as shown in FIG. 6 of locking groove 710 because locking groove 710 is identical as keyway arrangements, this structure
It can make on the basis of being kept in contact between the guide part of guide groove 720 and shank 71, the locking system 722 made only does straight line fortune
It is dynamic, the locking protrusion of guide groove 720 can be made, can smoothly enter into the locking groove 710 of shank 71, to facilitate and 71 phase of shank
The locking of parking piston 3 even.
Please continue to refer to Fig. 2 and Fig. 3, when automobile needs to enter parked state from non-parked state, which is driven
It is mobile with the right direction of Fig. 7 that device 721 drives locking system 722, so that the lock of locking protrusion and shank 71 in guide groove 720
Only groove 710 separates, and shank 71 is in the guide part in guide groove 720, and the second flexible connector 723 is compressed, at this point, straight line
The relative position for the guide part and shank 71 in guide groove 720 that kinematic driving unit 721 has locking system 722 is kept
Constant, under the promotion of the first flexible connector 110, parking piston 3 is moved with shank 71 to 12 direction of the second variable chamber
Dynamic, parking piston 3 pushes parking push rod 2 by unlock push rod 81, so that parking cam 4 and parking arm contact, into parking shape
State；During parking piston 3 is mobile to 12 direction of the second variable chamber with shank 71, shank 71 is from guide groove 720
In guide part extraction, when the free end of shank 71 from guide groove 720 guide part extract out after, actuating device of the linear motion 721
It stops working, retracts origin-location；And the power output end due to actuating device of the linear motion 721 and locking system 722 are only
It is contact and disconnected, the second flexible connector 723 connects one end and liquid that locking system 722 and power output end can contact
The outer wall of cylinder pressure 1, therefore, when actuating device of the linear motion 721 retracts origin-location, the second flexible connector 723 according to
Restoring force by being generated by compression drives locking system 722 mobile, so that guide groove 720 and the free end of shank 71 is staggered, with locking
Shank 71, makes automobile be in parked state.
By above-mentioned analysis it is found that the automatic locking mechanism 7 in above-described embodiment is only by actuating device of the linear motion
The mutual cooperation of the locking groove 710 on guide groove 720 and shank 71 on 721 driving locking systems 722, it is living to can be realized parking
The locking of plug 3 and unlock, therefore, the structure of the automatic locking structure 8 in the present embodiment is simple, reduces the difficulty of part processing
Degree, is easily installed.
It is worth noting that, the structure of the locking system 722 in above-described embodiment is varied, led as long as offering thereon
Slot 720.Such as the locking system 722 in Fig. 6 and Fig. 7 includes forced section, work department and the mounting portion being sequentially connected；Stress
Portion can be provided with work department with power output end in contact, guide groove 720.And in order to make the driving lock of actuating device of the linear motion 721
After locking apparatus 722 is mobile, the free end of shank 71 can be from the guide part in guide groove 720 by (entering non-stay from parked state
Car state) or the free end of shank 71 can be extracted out from the guide part in guide groove 720 (from non-parked state to parked state),
Mounting hole is equipped with also on the inner wall that hydraulic cylinder 1 is located at the first variable chamber 11 to be made with installing the mounting portion of locking system 722
The free end that the driving locking system 722 of actuating device of the linear motion 721 is moved to shank 71 can be from the guide part in guide groove 720
By (from parked state enter non-parked state) or the free end of shank 71 can be extracted out from the guide part in guide groove 720 (from
Non- parked state is to parked state) when, mounting portion can be located in mounting hole, avoid the free end of shank 71 from guide groove 720
In guide part pass through, or when extracting out from the guide part in guide groove 720, drive entire locking system mobile.
It should be noted that the actuating device of the linear motion 721 in above-described embodiment can be the achievable tools such as motor
Body device, but not only in this.
The embodiment of the invention also provides a kind of automatic transmission, above-mentioned technical proposal is provided in automatic transmission and is mentioned
Hydraulic halting mechanism.
Compared with the existing technology, automatic transmission provided in an embodiment of the present invention has following advantage:
The automatic transmission and the hydraulic halting mechanism that above-mentioned technical proposal is mentioned are possessed excellent compared with the existing technology
Gesture is identical, and details are not described herein.
Specifically, in the hydraulic halting mechanism that the shell of the automatic transmission and above-mentioned technical proposal are mentioned hydraulic cylinder it is outer
Wall is fixed together.Such as hydraulic cylinder includes the cylinder body for being fixed with cylinder cap, the shell of cylinder body and automatic transmission links together.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of hydraulic halting mechanism, including hydraulic cylinder (1), the parking piston (3) being located in the hydraulic cylinder (1) and can
Locking and the automatic locking mechanism (7) for unlocking the parking piston (3), the parking piston (3) be equipped with parking cam (4)
Push rod is connected, which is characterized in that further includes the manual unlocking device for driving the push rod to move along a straight line along its axial direction；
The manual unlocking device include manual part and can under the control of the manual part driving push rod along its axis
To the running part of linear motion, the push rod includes parking push rod (2) and for connecting the parking push rod (2) and parking
The unlock push rod (81) of piston (3), the parking push rod (2) and the unlock push rod (81) are hinged, and the parking is convex
Wheel (4) is located on the parking push rod (2), and one end that the parking push rod (2) is connected with unlock push rod (81), which is equipped with, to be connected
Hole is connect, the running part is located at one end that unlock push rod (81) is connected with the parking push rod (2), the unlock push rod
(81) one end being connected with the parking push rod (2) passes through the connecting hole, so that power can be driven to transmission by part manually
Part.
2. hydraulic halting mechanism according to claim 1, which is characterized in that the manual unlocking device be cam mechanism,
Gear and rack teeth mechanism or turbine and worm mechanism；
When the manual unlocking device is the cam mechanism, the cam mechanism includes as the manual of the manual part
Cam (82) and protrusion as the running part, the protrusion are located on the push rod, and the protrusion with it is described manually
The contoured surface of the profile face contact of cam (82), the manual cam (82) is equipped with locking plane, makes manually described convex manually
When taking turns (82) rotation, the manual cam (82) is able to drive the protrusion and moves along the push rod direction, to drive
It is mobile to state push rod, the parking cam and parking arm on the push rod is made to be segregated into non-parking；
When the manual unlocking device is the gear and rack teeth mechanism, the gear and rack teeth mechanism includes being used as the hand-operated
The manual gear divided and the rack gear as the running part, the rack gear is engaged with the manual gear, and the rack gear is set
On the push rod, the manual gear is engaged with the rack gear；
When the manual unlocking device is the turbine and worm mechanism, the turbine and worm mechanism includes being used as the hand-operated
Point manual worm and as the running part turbine and rotary motion can be converted into linear motion interpreter
Structure, the turbine are engaged with the manual worm, and the turbine is connected by the switching mechanism with the push rod.
3. hydraulic halting mechanism according to claim 1, which is characterized in that the parking piston (3) is by the hydraulic cylinder
(1) inside is separated into the first variable chamber (11) and the second variable chamber (12), and the automatic locking mechanism (7) is located at described
In first variable chamber (11), it is living that one end that unlock push rod (81) is connected with the parking piston (3) is located at the parking
Plug (3) is located at the side of the second variable chamber (12)；Wherein,
The first flexible connector (110) are equipped in first variable chamber (11), it is described to push the parking piston (3) to make
Parking cam (4) is in parked state；Second variable chamber (12) and the oilhole (10) being provided on the hydraulic cylinder (1)
Connection, to push the parking piston (3) that the unlock is driven to push away when being passed through hydraulic oil in second variable chamber (12)
Bar (81) is mobile, and unlock push rod (81) drives the parking cam (4) and parking arm point on the parking push rod (2)
From.
4. hydraulic halting mechanism according to claim 3, which is characterized in that the automatic locking mechanism (7) includes shank
(71) and removable locking system (72)；One end of the shank (71) is the connecting pin being connected with the parking piston (3), separately
One end is free end；Locking groove (710) identical with keyway arrangements, the removable locking are offered on the shank (71)
It is offered on device (72) guide groove (720), the guide groove (720) includes for making the free end pass through the removable locking
The guide part of device (72), and the locking protrusion that can be engaged with the locking groove (710) in non-parked state；
In parked state, the removable locking system (72) stops the free end, and the parking piston (3) keeps lock
Only；In non-parked state, the removable locking system (72) is mobile to make the free end pass through the guide part, and described
Locking protrusion engages with the locking groove (710).
5. hydraulic halting mechanism according to claim 4, which is characterized in that the removable locking system (72) includes lock
Locking apparatus (722) and actuating device of the linear motion (721), the guide groove (720) are provided on the locking system (722)；Its
In,
The actuating device of the linear motion (721) is located at the outside of the hydraulic cylinder (1), one end of the locking system (722)
With the power output end in contact of the actuating device of the linear motion (721), what the other end protruded into the hydraulic cylinder (1) first can
Become in chamber (11), one end and the hydraulic cylinder (1) that the locking system (722) can contact with the power output end
Outer wall is connected by the second flexible connector (723)；
The actuating device of the linear motion (721) pushes the locking system (722) mobile by the power output end, makes institute
The guide part can be passed through in non-parked state by stating free end, and second flexible connector (723) is in non-parked state
When drive the locking system (722) mobile, pass through the locking protrusion with the locking groove (710) and engage.
6. hydraulic halting mechanism according to claim 5, which is characterized in that the hydraulic cylinder (1) is located at the first variable chamber
The inner wall of room (11) is equipped with mounting hole；The locking system (722) includes the forced section being sequentially connected, work department and can pacify
Mounting portion in mounting hole；The forced section can be provided with institute with the power output end in contact, the guide groove (720)
State work department.
7. a kind of automatic transmission, which is characterized in that be provided with any one of claim 1~6 institute in the automatic transmission
State hydraulic halting mechanism.
8. automatic transmission according to claim 7, which is characterized in that the shell of the automatic transmission with it is described hydraulic
The outer wall of hydraulic cylinder (1) is fixed together in halting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023371.2A CN106931161B (en) | 2015-12-30 | 2015-12-30 | A kind of hydraulic halting mechanism and automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023371.2A CN106931161B (en) | 2015-12-30 | 2015-12-30 | A kind of hydraulic halting mechanism and automatic transmission |
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| Publication Number | Publication Date |
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| CN106931161A CN106931161A (en) | 2017-07-07 |
| CN106931161B true CN106931161B (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511023371.2A Active CN106931161B (en) | 2015-12-30 | 2015-12-30 | A kind of hydraulic halting mechanism and automatic transmission |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018130485B4 (en) * | 2018-11-30 | 2020-06-18 | Schaeffler Technologies AG & Co. KG | Parking lock device for a transmission with a parking lock wheel |
| EP3667131A1 (en) * | 2018-12-14 | 2020-06-17 | SVM Schultz Verwaltungs-GmbH & Co. KG | Locking unit |
| DE102019111240A1 (en) * | 2019-04-30 | 2020-11-05 | Svm Schultz Verwaltungs-Gmbh & Co. Kg | Locking unit and procedure |
| CN110360176B (en) * | 2019-06-18 | 2020-08-28 | 浙江吉利控股集团有限公司 | Hydraulic actuating device and automobile parking mechanism |
| CN111231919B (en) * | 2019-12-27 | 2021-10-08 | 中国第一汽车股份有限公司 | Automatic parking method and system and vehicle |
| CN113251144A (en) * | 2021-06-02 | 2021-08-13 | 杰锋汽车动力系统股份有限公司 | Parking device for automatic gearbox |
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| CN106931161A (en) | 2017-07-07 |
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