CN105276159A - P-gear parking structure - Google Patents
P-gear parking structure Download PDFInfo
- Publication number
- CN105276159A CN105276159A CN201510729682.4A CN201510729682A CN105276159A CN 105276159 A CN105276159 A CN 105276159A CN 201510729682 A CN201510729682 A CN 201510729682A CN 105276159 A CN105276159 A CN 105276159A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- cam
- pawl
- input shaft
- switch
- 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.)
- Pending
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Classifications
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/04—Ratio selector apparatus
- F16H59/042—Ratio selector apparatus comprising a final actuating mechanism
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/04—Ratio selector apparatus
- F16H59/044—Ratio selector apparatus consisting of electrical switches or sensors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
Abstract
The invention relates to the technical field of cars, in particular to a P-gear parking structure. The P-gear parking structure comprises a pressing structure and a pawl; the pressing structure comprises a motor, a cam and an input shaft; the motor is connected with the input shaft; the cam is connected on the input shaft; the cam is arranged above the pawl; and a pawl body of the pawl is connected with a pawl return device for pulling and returning the pawl from pawl teeth of the pawl. According to the P-gear parking structure, the pressing device is set to be a cam structure; a complex structure of the pressing device of the P-gear parking mechanism is simplified by utilizing the characteristics of the cam body; space occupancy of the P-gear parking structure is saved; stability and immobility in work of the pressing structure are also improved; the motor controls the input shaft to drive the cam to rotate, so that the pawl below the cam can be clamped into the pawl teeth of the pawl to prevent the pawl from rotating, and a connecting structure among the pawl teeth is simple; automation degree for motor control drive is high; and movement reliability and parking precision are improved.
Description
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of P and keep off parking structure.
Background technique
P keeps off structure and is widely used on automatic transmission case and electric vehicle gearbox, and P gear is as parking gear, and it is the rotating part utilizing mechanical device to remove the drive unit of locking automobile, and automobile can not be moved.As long as selection lever is on traveling-position during engine running, Automotives Equipped Automatic Transmissions just starts traveling easily, and when parking, selection lever must be pulled into P position, thus by the stop device of speed changer inside, output shaft is pinned, and strain hand braking, prevent moving vehicle.When automobile needs to stop one period of long period on a fixed position, or leave vehicle after stop before, should draw hand braking and driving lever advanced on the position of " P ", when you stop the not used time, gear is at this, and now wheel is in mechanical locking state, can prevent from slipping.
Traditional P keeps off structure and manually operates, between cog taken turns by the ratchet snapped on the output shaft of speed changer with pressing structure, ratchet to be moved downward, ratchet cannot rotate, thus output shaft also stops operating, no longer carry out speed transmission, speed changer quits work, automobile is in halted state, when manually-operable makes pressing structure reset, ratchet is no longer subject to the pressure of pressing structure and is upwards lifted by returning device, leave the wheel between cog of ratchet, ratchet is no longer subject to the restriction of ratchet, can again rotate, output shaft also rotatably carries out speed transmission, speed changer preparatory work, automobile is in the state that can start traveling.But the hold-down devices that existing P keeps off halting mechanism is generally made up of down-pressed pole and work pin, on spatial placement, occupancy is large, also need to arrange complicated resetting means helps down-pressed pole and work pin to lift reset simultaneously, to remove parked state, operationally may occur that the phenomenon of human operational error occurs, automobile is in when P keeps off parked state and starts traveling by force, when down-pressed pole and work pin are under pressure and are impacted, very easily cause damage, coordinating that down-pressed pole and work are sold in structural design there will be deviation, artificial Non-follow control also can cause the insecure problem of action.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention solves the hold-down devices complex structure that existing P keeps off parking structure, and the amount of taking up room is large, and in practical operation, easily cause pressing structure to damage, and there is manually-operable manual control and mechanism is performed an action insecure problem.
(2) technological scheme
In order to solve the problems of the technologies described above, the invention provides a kind of P and keep off parking structure, comprise pressing structure and ratchet, described pressing structure comprises motor, cam and input shaft, described motor is connected with described input shaft, and described cam is connected on described input shaft, and described cam is arranged at the top of described ratchet, the pawl of described ratchet is connected with ratchet pawl reset device with it, the wheel between cog pull-up of described ratchet by ratchet to be resetted.
Wherein, also comprise construction of switch, described construction of switch comprises contact switch and switch plectrum, described switch plectrum is positioned in the plane vertical with described input shaft, and the top of described switch plectrum is fixedly connected with described input shaft is vertical, and described contact switch and described switch plectrum are positioned at same plane, and be positioned at the side of described switch plectrum, when described contact switch is touched in the bottom of described switch plectrum, described contact switch sends signal, to control the rotation of described motor to described motor.
Wherein, the top of described switch plectrum is provided with cam return device, with by described cam by pressing down the recovering state of described ratchet to lifting the state loosening described ratchet.
Wherein, the little nose circle outer side surface of described cam is provided with projection, and described cam return device is cam return pin, and described cam return pin is vertically fixed on described switch plectrum, and the circumferential surface of described cam return pin and described protruding contacts side surfaces.
Wherein, described contact switch is two, lays respectively at the both sides of described switch plectrum.
Wherein, described ratchet pawl reset device comprises ratchet return pin, described ratchet return pin is vertically connected on the large nose circle end face of described cam, the bending-like that the side of described ratchet is provided with upwards is protruding, described ratchet return pin snaps in the bending of described projection, the wheel between cog pull-up of described ratchet by ratchet to be resetted.
Wherein, one end of described ratchet is provided with the projection of the wheel between cog snapping in described ratchet, the other end and ratchet pinned connection.
Wherein, described ratchet pawl reset device also comprises ratchet spring, and described ratchet spring is sheathed on described ratchet bearing pin, is connected with the pawl body of described ratchet.
Wherein, described cam is connected with described input shaft by cam spring.
(3) beneficial effect
Technique scheme tool of the present invention has the following advantages: hold-down devices is set to cam structure by the present invention, utilize the feature of cam itself to simplify complicated structure that P blocks the hold-down devices of mechanism of car, save the space hold amount that P keeps off parking structure, too increase pressing structure in the stability worked and soundness, cam is arranged on input shaft simultaneously, rotated by Electric Machine Control input shaft band moving cam, the ratchet below cam is enable to snap in the wheel between cog of ratchet, stop pawl wheel, linkage structure is simple therebetween, Electric Machine Control drives automaticity high, improve the accuracy of motion credibility and parking.
The technical characteristics of the technical problem solved except the present invention described above, the technological scheme of formation and have the technical characteristics of these technological schemes to bring advantage except, the advantage that other technologies feature of the present invention and these technical characteristicss bring, will further illustrate by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the P gear parking structure of the embodiment of the present invention.
In figure: 1: pressing structure; 2: ratchet; 3: construction of switch; 4: ratchet; 11: cam; 12: motor; 13: input shaft; 14: cam spring; 21: ratchet bearing pin; 22: ratchet spring; 31: switch plectrum; 32: contact switch; 111: ratchet return pin; 311: cam return pin.
Embodiment
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of protection of the invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, in describing the invention, except as otherwise noted, the implication of " multiple ", " many ", " many groups " is two or more.
As shown in Figure 1, the novel P that the embodiment of the present invention provides keeps off parking structure, comprise pressing structure 1 and ratchet 2, pressing structure 1 comprises motor 12, cam 11 and input shaft 13, motor 12 is connected with input shaft 13, and cam 11 is connected on input shaft 13, and cam 11 is arranged at the top of ratchet 2, the pawl of ratchet 2 is connected with ratchet pawl reset device with it, the wheel between cog pull-up of ratchet 2 by ratchet 4 to be resetted.
Hold-down devices is set to cam structure by the present invention, utilize the feature of cam itself to simplify complicated structure that P blocks the hold-down devices of mechanism of car, save the space hold amount that P keeps off parking structure, too increase pressing structure in the stability worked and soundness, cam is arranged on input shaft simultaneously, rotated by Electric Machine Control input shaft band moving cam, the ratchet below cam is enable to snap in the wheel between cog of ratchet, stop pawl wheel, linkage structure is simple therebetween, Electric Machine Control drives automaticity high, improves the accuracy of motion credibility and parking.
Further, also comprise construction of switch 3, construction of switch 3 comprises contact switch 32 and switch plectrum 31, switch plectrum 31 is positioned in the plane vertical with input shaft 13, and the top of switch plectrum 31 is fixedly connected with input shaft 13 is vertical, and contact switch 32 and switch plectrum 31 are positioned at same plane, and be positioned at the side of switch plectrum 31, when contact switch 32 is touched in the bottom of switch plectrum 31, contact switch 32 sends signal to motor 12, to control the rotation of motor 12.Switch plectrum and cam are together arranged on input shaft, and rotate by Electric Machine Control simultaneously, contact switch is touched in rotation, contact switch sends the start and stop of signal control motor, make cam accurately can press down ratchet and lift reset in rotation and leave ratchet, improve controllability and control accuracy that P keeps off drive unit.
Further, the top of switch plectrum 31 is provided with cam return device, with by cam 11 by pressing down the recovering state of ratchet 2 to lifting the state loosening ratchet 2.Wherein, the little nose circle outer side surface of cam 11 is provided with projection, and cam return device is cam return pin 311, and cam return pin 311 is vertically fixed on switch plectrum 31, and the circumferential surface of cam return pin 311 and described protruding contacts side surfaces.Switch plectrum rotates, the projection on cam return pin actuating cam, and force band moving cam to return to the state not pressing down ratchet, ratchet lifts, and leave the wheel between cog of ratchet, ratchet can rotate again, cancels parked state.
Wherein, contact switch 32 is two, lays respectively at the both sides of switch plectrum 31.When entering parked state, cam has been in the state pressing down ratchet, switch plectrum bottom can touch side contact switch in rotation, and motor will stop operating, and waits for that follow-up cam presses down ratchet and snaps in ratchet, when parked state will be removed, the reversion of electricity opportunity driven input shaft, cam rotates and loosens ratchet, and ratchet lifts releasing parking, switch plectrum bottom can touch opposite side contact switch, motor stalls in rotation.
Wherein, ratchet pawl reset device comprises ratchet return pin 111, and ratchet return pin 111 is vertically connected on the large nose circle end face of cam 11, and the bending-like that the side of ratchet 2 is provided with upwards is protruding, ratchet return pin 111 snaps in protruding bending, the wheel between cog pull-up of ratchet 2 by ratchet 4 to be resetted.When cam loosens ratchet, ratchet return pin can go in the bending-like projection of pawl side, and cam is rotated further, and ratchet return pin is forced to drive ratchet to lift, and leaves ratchet and sets back, and also improves controllability and accuracy that ratchet resets in time.
Further, one end of ratchet 2 is provided with the projection of the wheel between cog snapping in ratchet 4, and the other end is connected with ratchet bearing pin 21.Ratchet pawl reset device also comprises ratchet spring 22, and ratchet spring 22 is sheathed on ratchet bearing pin 21, is connected with the pawl body of ratchet 2.Ratchet rotates around ratchet bearing pin, ratchet spring ratchet be not subject to cam press down time, maintain the position of fixed pawl when original state, in contact parking process, secondary pawl is returned to position during original state again.
In addition, cam 11 is connected with input shaft 13 by cam spring 14.When cam presses down ratchet, ratchet may prior to ratchet tooth contact, now, ratchet does not snap in ratchet wheel between cog, therefore ratchet cannot continue lower motion, cam stops operating, motor still drives input shaft to rotate simultaneously, cam spring will be passed to by rotating the energy be applied on cam, cam spring has energy storage effect, by energy storage, after pawl wheel, released energy by cam spring, promote that cam rotates, ratchet is pressed into the wheel between cog of ratchet, blocking ratchet makes it stop operating, reach parked state, the energy that the transmission of storage input shaft is set of cam spring, and energy can be passed to cam again, avoiding cam structure because of rotational energy too much sustains damage, it also avoid simultaneously and press down ratchet because motor stalling causes cam to further rotate, ratchet cannot snap in ratchet, parking cannot be realized in time.
In real-world operation, motor 12 drives input shaft 13 to rotate, input shaft 13 is with moving cam 11 to rotate, cam 11 rotating down pressing ratchet 2, ratchet 2 is moved downward, when the projection of ratchet 2 one end and the tooth contact of ratchet 4, and time in the teeth groove not snapping in ratchet 4, cam 11 stop motion, input shaft 13 continues rotate and compress cam spring 14, when the switch plectrum 31 on input shaft 13 contacts with side contact switch 32, contact switch 32 sends signal and makes motor 12 stop motion, if now vehicle has trace movement, drive ratchet 4 is rotated, when rotation is alignd to teeth groove with ratchet 2, cam spring 14 acts on to cam 11, driving cam 11 rotates again, cam 11 will press down ratchet 2, the projection of ratchet 2 is snapped in ratchet 4 teeth groove, stop ratchet 4 to rotate and realize parking.When parking removed by needs, motor 12 reverses, motor 12 drives input shaft 13 counterrotating, cam return pin 311 on switch plectrum 31 forces actuating cam 11 to rotate, ratchet return pin 111 on cam 11 is by ratchet 2 pull-up, and ratchet spring 22 keeps ratchet 2 to return to initial position, and switch plectrum 31 contacts with opposite side contact switch 32 in rotation, motor 12 stops operating again, removes parking.
In sum, hold-down devices is set to cam structure by the present invention, utilize the feature of cam itself to simplify complicated structure that P blocks the hold-down devices of mechanism of car, save the space hold amount that P keeps off parking structure, too increase pressing structure in the stability worked and soundness, cam is arranged on input shaft simultaneously, rotated by Electric Machine Control input shaft band moving cam, the ratchet below cam is enable to snap in the wheel between cog of ratchet, stop pawl wheel, linkage structure is simple therebetween, Electric Machine Control drives automaticity high, improve the accuracy of motion credibility and parking.
Last it is noted that above embodiment is only in order to illustrate technological scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (9)
1. a P keeps off parking structure, comprise pressing structure and ratchet, it is characterized in that: described pressing structure comprises motor, cam and input shaft, described motor is connected with described input shaft, described cam is connected on described input shaft, described cam is arranged at the top of described ratchet, and the pawl of described ratchet is connected with ratchet pawl reset device with it, the wheel between cog pull-up of described ratchet by ratchet to be resetted.
2. P according to claim 1 keeps off parking structure, it is characterized in that: also comprise construction of switch, described construction of switch comprises contact switch and switch plectrum, described switch plectrum is positioned in the plane vertical with described input shaft, and the top of described switch plectrum is fixedly connected with described input shaft is vertical, described contact switch and described switch plectrum are positioned at same plane, and be positioned at the side of described switch plectrum, when described contact switch is touched in the bottom of described switch plectrum, described contact switch sends signal, to control the rotation of described motor to described motor.
3. P according to claim 2 keeps off parking structure, it is characterized in that: the top of described switch plectrum is provided with cam return device, with by described cam by pressing down the recovering state of described ratchet to lifting the state loosening described ratchet.
4. P according to claim 3 keeps off parking structure, it is characterized in that: the little nose circle outer side surface of described cam is provided with projection, described cam return device is cam return pin, described cam return pin is vertically fixed on described switch plectrum, and the circumferential surface of described cam return pin and described protruding contacts side surfaces.
5. P according to claim 4 keeps off parking structure, it is characterized in that: described contact switch is two, lays respectively at the both sides of described switch plectrum.
6. P according to claim 5 keeps off parking structure, it is characterized in that: described ratchet pawl reset device comprises ratchet return pin, described ratchet return pin is vertically connected on the large nose circle end face of described cam, the bending-like that the side of described ratchet is provided with upwards is protruding, described ratchet return pin snaps in the bending of described projection, the wheel between cog pull-up of described ratchet by ratchet to be resetted.
7. the P according to claim 1-6 any one keeps off parking structure, it is characterized in that: one end of described ratchet is provided with the projection of the wheel between cog snapping in described ratchet, the other end and ratchet pinned connection.
8. P according to claim 6 keeps off parking structure, and it is characterized in that: described ratchet pawl reset device also comprises ratchet spring, described ratchet spring is sheathed on described ratchet bearing pin, is connected with the pawl body of described ratchet.
9. P according to claim 8 keeps off parking structure, it is characterized in that: described cam is connected with described input shaft by cam spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729682.4A CN105276159A (en) | 2015-10-30 | 2015-10-30 | P-gear parking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729682.4A CN105276159A (en) | 2015-10-30 | 2015-10-30 | P-gear parking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105276159A true CN105276159A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510729682.4A Pending CN105276159A (en) | 2015-10-30 | 2015-10-30 | P-gear parking structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN105276159A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763731A (en) * | 2016-12-22 | 2017-05-31 | 杭州前进齿轮箱集团股份有限公司 | A kind of automobile-used P grades of lockable mechanism of miniature electric |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090193931A1 (en) * | 2008-02-01 | 2009-08-06 | Georg Burgardt | Parking lock arrangement |
| CN202387419U (en) * | 2011-12-27 | 2012-08-22 | 大连欧科膜技术工程有限公司 | Oscillating rotary stirring machine |
| CN203770620U (en) * | 2014-03-11 | 2014-08-13 | 中国第一汽车股份有限公司 | Novel double-clutch automatic transmission parking brake cam assembly |
| CN104019227A (en) * | 2014-06-20 | 2014-09-03 | 重庆长安汽车股份有限公司 | Motor-vehicle parking locking mechanism |
| CN204201044U (en) * | 2014-09-25 | 2015-03-11 | 中国第一汽车股份有限公司 | A kind of novel double-clutch automatic transmission Parking Brake |
-
2015
- 2015-10-30 CN CN201510729682.4A patent/CN105276159A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090193931A1 (en) * | 2008-02-01 | 2009-08-06 | Georg Burgardt | Parking lock arrangement |
| CN202387419U (en) * | 2011-12-27 | 2012-08-22 | 大连欧科膜技术工程有限公司 | Oscillating rotary stirring machine |
| CN203770620U (en) * | 2014-03-11 | 2014-08-13 | 中国第一汽车股份有限公司 | Novel double-clutch automatic transmission parking brake cam assembly |
| CN104019227A (en) * | 2014-06-20 | 2014-09-03 | 重庆长安汽车股份有限公司 | Motor-vehicle parking locking mechanism |
| CN204201044U (en) * | 2014-09-25 | 2015-03-11 | 中国第一汽车股份有限公司 | A kind of novel double-clutch automatic transmission Parking Brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763731A (en) * | 2016-12-22 | 2017-05-31 | 杭州前进齿轮箱集团股份有限公司 | A kind of automobile-used P grades of lockable mechanism of miniature electric |
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| PB01 | Publication | ||
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Application publication date: 20160127 |