CN210290721U - Automatic transmission emergency unlocking device, automatic transmission and vehicle - Google Patents
Automatic transmission emergency unlocking device, automatic transmission and vehicle Download PDFInfo
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- CN210290721U CN210290721U CN201920991446.3U CN201920991446U CN210290721U CN 210290721 U CN210290721 U CN 210290721U CN 201920991446 U CN201920991446 U CN 201920991446U CN 210290721 U CN210290721 U CN 210290721U
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Abstract
The utility model relates to an automatic transmission emergency unlocking device and automatic transmission and vehicle, emergency unlocking device is used for adopting the automatic transmission of hydraulic pressure parking mechanism to when the vehicle engine can't start, unblock the parking of vehicle and keep off, it includes first unblock portion and second unblock portion, first unblock portion is located on the casing, and with the control unit electric connection of automatic transmission, and first unblock portion can accept the control signal of control unit, and the top pushes away the rotation of locking piece, in order to remove the restraint to piston rod axial motion; the second unlocking part is connected with the piston rod and electrically connected with the control unit, and the second unlocking part can receive a control signal of the control unit and drive the piston rod to retract so as to drive the parking arm to rotate and release the engagement with the parking gear. The utility model discloses an automatic transmission emergency unlocking device can drive the piston rod withdrawal through the control unit control second unblock portion when vehicle engine breaks down to can remove the parking fender to the vehicle.
Description
Technical Field
The utility model relates to a derailleur technical field, in particular to urgent unlocking device of automatic transmission, simultaneously, the utility model discloses still relate to an automatic transmission who has urgent unlocking device of this automatic transmission to and the vehicle that has this automatic transmission.
Background
With the development of scientific technology, the speed changer for the vehicle is developed rapidly, at present, a plurality of automatic speed changers which can be matched with an electronic gear shifter exist on the market, and the parking mechanism of the automatic speed changer is usually driven by a motor or hydraulically. However, when the motor driving mode is adopted, an additional motor needs to be added to the automatic transmission to drive the parking mechanism, so that the cost of the whole vehicle is increased. Therefore, hydraulic driving is widely applied at present, but the hydraulically driven parking mechanism needs to work in an engine ignition state to provide power for the hydraulic motor. However, when the vehicle fails and the engine cannot be started, the automatic transmission using the hydraulic parking mechanism cannot release the parking brake, so that the vehicle cannot be moved, and the vehicle needs to be moved by a trailer, which is not favorable for vehicle maintenance.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an automatic transmission emergency unlocking device to under the unable starting condition of vehicle engine, also can carry out the unblock to the vehicle of puting into the parking fender.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an automatic transmission emergency unlocking device for adopt hydraulic pressure parking mechanism's automatic transmission to when the vehicle engine can't start, the unblock the parking of vehicle is kept off, liquid parking mechanism includes the casing, inserts and locates piston rod in the casing to and rotate and locate in the casing, and can restrict the locking piece of piston rod motion, just the piston rod with the parking arm transmission of vehicle is connected, emergency unlocking device includes:
the first unlocking part is arranged on the shell and electrically connected with a control unit of the automatic transmission, and the first unlocking part can bear a control signal of the control unit and push the locking piece to rotate so as to release the restriction on the motion of the piston rod;
and the second unlocking part is connected with the piston rod and forms electric connection with the control unit, and is configured to bear a control signal of the control unit and drive the piston rod to retract so as to drive the parking arm to rotate and release the engagement with the parking gear of the vehicle.
Further, the first unlocking part is a first electromagnet installed on the housing, the action direction of the actuating end of the first electromagnet is orthogonal to the axis direction of the piston rod, and the actuating end of the first electromagnet abuts against the locking piece.
Furthermore, a first elastic piece is abutted between the locking piece and the shell, the locking piece can bear the pushing of the first elastic piece and is arranged on the moving diameter of the piston rod in a blocking mode so as to form the motion constraint of the piston rod.
Furthermore, the piston rod via the driving medium with the parking arm transmission is connected, the driving medium include with the flexible parking push rod that connects of end of piston rod, the cover is located parking cam on the parking push rod, and locate on the parking push rod, push up with the elasticity the second elastic component of parking cam.
Further, the quick unlocking device is further including locating the flexible magnet that serves of piston rod, and install in on the automatic gearbox housing, in order to monitor the flexible end displacement of piston rod keep off the position sensor, just keep off the position sensor with the control unit electric connection.
Furthermore, the second unlocking part is a second electromagnet arranged on the shell, the action direction of the actuating end of the second electromagnet is consistent with the axial direction of the piston rod, and the actuating end of the second electromagnet is connected with the piston rod.
Furthermore, the second unlocking part comprises a second electromagnet arranged on the shell and a lever piece which can pivot and is arranged on the shell, the action direction of the execution end of the second electromagnet is consistent with the axis direction of the piston rod, and two ends of the lever piece are respectively connected with the execution end of the second electromagnet and the piston rod.
Compared with the prior art, the utility model discloses following advantage has:
(1) automatic transmission promptly unlocking device, through setting up second unblock portion, can be when vehicle engine breaks down, drive the piston rod withdrawal through control unit control second unblock portion to can remove the parking fender to the vehicle, overcome among the prior art because of the difficult problem of the unable unblock vehicle of engine trouble.
(2) The first unlocking part adopts the first electromagnet, so that the structure is simple, and the design and implementation are convenient.
(3) The first elastic piece is arranged, so that the first unlocking part can restrain the movement of the piston rod conveniently.
(4) The second elastic piece is arranged, so that the rotation of the parking arm can be finely adjusted when the parking gear is hung, and the meshing stability of the parking arm and the parking gear can be improved.
(5) The gear sensor is arranged, so that the displacement of the telescopic end of the piston rod can be accurately monitored, and the control unit can be favorable for accurately controlling the first unlocking part and the second unlocking part to act.
(6) The second unlocking part adopts a second electromagnet, so that the structure is simple, and the design and implementation are convenient.
In addition, another object of the present invention is to provide an automatic transmission, including the emergency unlocking device for an automatic transmission as described above.
Furthermore, the present invention also provides a vehicle, wherein the automatic transmission is provided on the vehicle.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural view of an application state of an emergency unlocking device of an automatic transmission according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the housing of FIG. 1 with the housing removed;
FIG. 3 is a schematic view of the housing of FIG. 1 from another perspective;
description of reference numerals:
1-shell, 2-second electromagnet, 3-first electromagnet, 4-piston rod, 5-parking push rod, 501-lug, 6-parking gear, 7-parking arm, 8-parking cam, 9-second elastic piece, 10-gear sensor, 11-magnet, 12-locking piece, 13-parking spring and 14-first elastic piece.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The embodiment relates to an emergency unlocking device of an automatic transmission, which is used for the automatic transmission adopting a hydraulic parking mechanism and is easy to unlock a parking gear of a vehicle when an engine of the vehicle cannot be started. The hydraulic parking mechanism comprises a shell, a piston rod inserted in the shell and a locking piece which is rotatably arranged in the shell and can restrict the piston rod to move along the axial direction of the locking piece, and the piston rod is in transmission connection with a parking arm of a vehicle.
The emergency unlocking device of the automatic transmission mainly comprises a first unlocking part and a second unlocking part, wherein the first unlocking part is arranged on the shell and electrically connected with a control unit of the automatic transmission, the first unlocking part can receive a control signal of the control unit, and the pushing locking part rotates to release the constraint on the axial movement of the piston rod. The second unlocking part is connected with the piston rod and electrically connected with the control unit, and is configured to receive a control signal of the control unit and drive the piston rod to retract so as to drive the parking arm to rotate and release the engagement with the parking gear of the vehicle.
Based on the above overall structure, an exemplary structure of the automatic transmission emergency unlocking device in the application state of the present embodiment is shown in fig. 1 to 3, wherein, except for the features shown herein, other structures of the hydraulic parking control mechanism and the control manner of the mechanism can be referred to related mature structures in the prior art, and the present embodiment is not described again. As shown in fig. 2, the piston rod 4 is slidably disposed in the housing 1, and a radially protruding collar is formed on the piston rod 4, and an outer circumferential surface of the collar abuts against an inner wall of the housing 1, thereby dividing an inner cavity of the housing 1 into an upper cavity and a lower cavity. In addition, in the state shown in fig. 3, the piston rod 4 is further formed with a first groove and a second groove which are arranged along the axial direction thereof and spaced from bottom to top. Similar to the prior art, a parking spring 13 which is sleeved on the piston rod 4 and elastically abuts between the top wall of the shell 1 and the convex ring is arranged in the upper cavity, and the lower cavity is communicated with a hydraulic oil path.
As shown in fig. 3, the locking member 12 is configured in a "C" shape, a hinge hole is formed on the locking member 12, and the locking member 12 is hinged to the housing 1 via a hinge shaft inserted into the hinge hole. In addition, based on the "C" shaped structure of the locking member 12, in order to improve the pushing effect of the first unlocking portion on the locking member 12, a pushing plane is formed at one end of the locking member 12 abutting against the first unlocking portion. In addition, in the present embodiment, the first elastic member 14 abuts between the locking member 12 and the housing 1, the first elastic member 14 may be a spring in the prior art, and the arrangement of the first elastic member in the transmission may be referred to in the prior art. At this time, in order to improve the setting stability of the first elastic element 14, a first convex pillar is convexly formed at the other end of the locking element 12 relative to the pushing plane, meanwhile, a second convex pillar arranged opposite to the first convex pillar is also constructed on the housing 1, and two ends of the first elastic element 14 are respectively sleeved on the first convex pillar and the second convex pillar.
As shown in fig. 2, the first unlocking portion is specifically the first electromagnet 3 mounted on the housing 1, the action direction of the actuating end of the first electromagnet 3 is orthogonal to the axial direction of the piston rod 4, and the actuating end of the first electromagnet 3 abuts against the abutting plane of the locking member 12. When the first electromagnet 3 is powered off, the actuating end thereof is in a retracted state, and when the first electromagnet is powered on, the actuating end of the second electromagnet 2 is in an extended state. So far, with the above description, when the actuating end of the first electromagnet 3 is in the retracted state, the locking member 12 of the present embodiment can be clamped in the first groove of the piston rod 4 due to the elastic pushing of the first elastic member 14, so that the axial movement of the piston rod 4 can be restricted, and the vehicle can be parked.
The second unlocking portion of the present embodiment is specifically the second electromagnet 2 installed on the housing 1, the action direction of the actuating end of the second electromagnet 2 is consistent with the axial direction of the piston rod 4, and the actuating end of the second electromagnet 2 is connected with the piston rod 4. When the first electromagnet 3 is powered off, the actuating end thereof is in an extended state, and when the first electromagnet is powered on, the actuating end of the second electromagnet 2 is in a retracted state.
It should be noted that, in addition to the second electromagnet 2, the second unlocking portion of the present embodiment may also be composed of the second electromagnet 2 and a lever member rotatably disposed on the housing 1, wherein the actuating end of the second electromagnet 2 has an actuating direction consistent with the axial direction of the piston rod 4, and two ends of the lever member are respectively connected to the actuating end of the second electromagnet 2 and the piston rod 4. In order to improve the use effect, the second electromagnet 2 needs to be configured such that its actuating end is in a retracted state when it is powered off, and the actuating end of the second electromagnet 2 is in an extended state when it is powered on. This structure allows the second electromagnet 2 to drive the piston rod 4 to retract via the lever member, and thus also drives the parking arm 7 to rotate, thereby releasing the engagement between the parking arm 7 and the parking gear 6.
Referring to fig. 1 and 3, the piston rod 4 of the present embodiment is connected to the parking arm 7 through a transmission member, the transmission member includes a parking push rod 5 connected to a telescopic end of the piston rod 4, a parking cam 8 sleeved on the parking push rod 5, and a second elastic member 9 disposed on the parking push rod 5 for elastically pushing the parking cam 8. Specifically, a protrusion 501 protruding outward along the radial direction is formed on the parking push rod 5, and the second elastic member 9 is sleeved on the parking push rod 5 and abuts between the protrusion 501 and the parking cam 8. By providing the second elastic member 9, the rotation of the parking arm 7 can be finely adjusted when the automatic transmission is engaged in the parking range, so that the engagement stability of the parking arm 7 and the parking gear 6 can be improved. And the second elastic element 9 can be made as a spring in the prior art.
As is well known to those skilled in the art, the parking arm 7 of the present embodiment is rotatably disposed on the automatic transmission housing via a parking shaft, and a return torsion spring connected between the parking post and the parking arm 7 is sleeved on the parking shaft, and the return torsion spring has an initial load so as to make the parking arm 7 and the parking gear 6 in a disengaged state in an initial state. As shown in fig. 3, the overall structure of the parking cam 8 of the present embodiment is similar to that of the prior art, the radial cross section of the parking cam 8 is circular, the parking cam 8 is overall conical, and in order to improve the pushing stability of the parking cam 8 against the parking arm 7, the upper end of the parking cam 8 is formed with a cylindrical abutting surface for abutting against the parking arm 7.
At this time, based on the state shown in fig. 3, when the abutting surface of the parking cam 8 abuts against the parking arm 7, the radial section at the position is relatively large, so that an abutting force capable of overcoming the initial load of the return torsion spring can be applied to the parking arm 7, and the parking arm 7 can be driven to rotate to be meshed with the parking gear 6, and a parking state is formed; when the piston rod 4 contracts, the parking cam 8 can be driven to move upwards, so that the parking cam 8 releases the pushing of the parking arm 7, and at the moment, the parking arm 7 can rotate reversely under the elastic action of the return torsion spring to disengage from the engagement with the parking gear 6, so that the parking gear is released.
Besides, the emergency unlocking device of the automatic transmission of the embodiment further includes a magnet 11 disposed on the telescopic end of the piston rod 4, and a gear sensor 10 mounted on the automatic transmission housing 1 for monitoring the displacement of the telescopic end of the piston rod 4, wherein the gear sensor 10 is electrically connected to the control unit and can output a displacement signal to the control unit. In particular, during manufacturing, the north and south poles of the magnet 11 are arranged along the axial direction of the piston rod 4, so that different current signals can be output when the gear sensor 10 respectively monitors the north and south poles of the magnet 11. The specific arrangement of the magnet 11 and the gear sensor 10 can be found in the prior art.
Based on the above overall description, when the automatic transmission emergency unlocking device applied with the present embodiment is used specifically, when the vehicle enters the parking gear in advance, first, the control unit controls the second electromagnet 2 to be energized to release the locking of the piston rod 4 by the locking member 12, and at this time, the piston rod 4 drives the parking push rod 5 to move downward under the action of the parking spring 13, so that the parking arm 7 is engaged with the parking gear 6. Then, after the control unit receives a displacement signal of the gear sensor 10, the second electromagnet 2 is controlled to be powered off, and at the moment, the locking piece 12 is clamped in the second clamping groove of the piston rod 4, so that the parking of the vehicle is completed.
When the parking gear is pre-released by a vehicle in a normal state of an engine, firstly, the control unit controls the second electromagnet 2 to be electrified so as to release the locking of the piston rod 4 by the locking piece 12, and then controls the hydraulic control valve to conduct a hydraulic oil path so that hydraulic oil enters the lower cavity to push the piston rod 4 to move upwards, so that the piston rod 4 can drive the parking push rod 5 to move upwards, and the parking arm 7 is disengaged from the parking gear 6. Then, after the control unit receives the displacement signal of the gear sensor 10, the second electromagnet 2 is controlled to be powered off, and at the moment, the locking piece 12 is clamped in the first clamping groove of the piston rod 4, so that the parking gear of the vehicle is released.
When the engine of the vehicle is normal, the parking gear can be released by adopting the existing mode; when the engine of the vehicle fails to start, the vehicle needs to be triggered to enter a failure mode to activate the unlocking device of the automatic transmission of the embodiment, for example, the trigger signal can be applied by pressing the button of the gear shifter P for a long time and stepping on the brake for 30 s.
At the moment, the control unit firstly controls the first electromagnet 3 to be activated and then controls the second electromagnet 2 to be electrified so as to release the axial constraint of the locking piece 12 on the piston rod 4; then, the control unit controls the first electromagnet 3 to be electrified so as to drive the piston rod 4 to move upwards and drive the parking push rod 5 to release the pushing of the parking arm 7, and therefore the engagement between the parking arm 7 and the parking gear 6 can be released under the action of the return spring. When the control unit receives a displacement signal of the gear sensor 10, the second electromagnet 2 is controlled to be powered off, and the locking piece 12 is placed on the axial direction of the piston rod 4 again under the action of the first elastic piece 14 to form locking for the axial movement of the piston rod 4; and finally, the control unit controls the first electromagnet 3 to be powered off, so that the vehicle parking gear can be released.
The emergency unlocking device of the automatic transmission of the embodiment can control the second electromagnet 2 to drive the piston rod 4 to retract through the control unit when the vehicle engine breaks down by arranging the second electromagnet 2, so that the parking gear can be removed from the vehicle, and the problem that the parking gear cannot be unlocked due to engine failure in the prior art is solved.
Example two
The present embodiment relates to an automatic transmission, which is provided with an automatic transmission emergency unlocking device as described in the first embodiment. Meanwhile, the embodiment also relates to a vehicle with the automatic transmission.
The vehicle of the embodiment adopts the automatic transmission with the automatic transmission emergency unlocking device as described in the first embodiment, so that the parking gear of the vehicle can be released when the engine of the vehicle cannot be started, and the vehicle can have a good use effect.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An emergency unlocking device of an automatic transmission is used for the automatic transmission adopting a hydraulic parking mechanism, so that when an engine of a vehicle cannot be started, a parking gear of the vehicle is unlocked, and the emergency unlocking device is characterized in that: the hydraulic parking mechanism comprises a shell (1), a piston rod (4) inserted in the shell (1) and a locking piece (12) which is rotatably arranged in the shell (1) and can restrict the movement of the piston rod (4), wherein the piston rod (4) is in transmission connection with a parking arm (7) of the vehicle; and the emergency unlocking device includes:
the first unlocking part is arranged on the shell (1) and electrically connected with a control unit of the automatic transmission, can bear a control signal of the control unit and pushes the locking piece (12) to rotate so as to release the restriction on the movement of the piston rod (4);
and the second unlocking part is connected with the piston rod (4) and forms electric connection with the control unit, and is configured to bear a control signal of the control unit and drive the piston rod (4) to retract so as to drive the parking arm (7) to rotate and release the engagement with the parking gear (6) of the vehicle.
2. The automatic transmission emergency unlocking device according to claim 1, characterized in that: the first unlocking part is a first electromagnet (3) arranged on the shell (1), the action direction of the actuating end of the first electromagnet (3) is orthogonal to the axis direction of the piston rod (4), and the actuating end of the first electromagnet (3) is abutted against the locking piece (12).
3. The automatic transmission emergency unlocking device according to claim 1, characterized in that: a first elastic piece (14) is abutted between the locking piece (12) and the shell (1), and the locking piece (12) can bear the pushing of the first elastic piece (14) and is blocked on the motion path of the piston rod (4) to form the restriction on the motion of the piston rod (4).
4. The automatic transmission emergency unlocking device according to claim 1, characterized in that: piston rod (4) via the driving medium with parking arm (7) transmission is connected, the driving medium include with piston rod (4) flexible end parking push rod (5) of being connected, the cover is located parking cam (8) on parking push rod (5) and locate on parking push rod (5), with the elasticity top push second elastic component (9) of parking cam (8).
5. The automatic transmission emergency unlocking device according to claim 1, characterized in that: urgent unlocking device is still including locating magnet (11) on the flexible end of piston rod (4), and install in on automatic gearbox casing (1), in order to monitor the fender position sensor (10) of the flexible end displacement of piston rod (4), just keep off position sensor (10) with the control unit electric connection.
6. The automatic transmission emergency unlocking device according to any one of claims 1 to 5, characterized in that: the second unlocking part is a second electromagnet (2) arranged on the shell (1), the action direction of the execution end of the second electromagnet (2) is consistent with the axis direction of the piston rod (4), and the execution end of the second electromagnet (2) is connected with the piston rod (4).
7. The automatic transmission emergency unlocking device according to any one of claims 1 to 5, characterized in that: the second unlocking part comprises a second electromagnet (2) arranged on the shell (1) and a lever piece which can be pivoted on the shell (1), the action direction of the execution end of the second electromagnet (2) is consistent with the axis direction of the piston rod (4), and two ends of the lever piece are respectively connected with the execution end of the second electromagnet (2) and the piston rod (4).
8. An automatic transmission characterized in that: comprising an automatic transmission emergency unlocking device according to any one of claims 1 to 7.
9. A vehicle, characterized in that: an automatic transmission according to claim 8 is provided on the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991446.3U CN210290721U (en) | 2019-06-27 | 2019-06-27 | Automatic transmission emergency unlocking device, automatic transmission and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991446.3U CN210290721U (en) | 2019-06-27 | 2019-06-27 | Automatic transmission emergency unlocking device, automatic transmission and vehicle |
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| CN210290721U true CN210290721U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920991446.3U Active CN210290721U (en) | 2019-06-27 | 2019-06-27 | Automatic transmission emergency unlocking device, automatic transmission and vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609129A (en) * | 2020-05-20 | 2020-09-01 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle with same |
| CN111609128A (en) * | 2020-05-19 | 2020-09-01 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle |
| CN114135657A (en) * | 2021-11-29 | 2022-03-04 | 江铃汽车股份有限公司 | Gearbox P-gear returning control system and strategy supporting full-automatic car washing function |
| CN114321358A (en) * | 2021-12-31 | 2022-04-12 | 中国第一汽车股份有限公司 | Hydraulic push rod parking assembly and transmission |
| CN114673786A (en) * | 2020-12-24 | 2022-06-28 | 丰田自动车株式会社 | Vehicle parking locking mechanism |
-
2019
- 2019-06-27 CN CN201920991446.3U patent/CN210290721U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609128A (en) * | 2020-05-19 | 2020-09-01 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle |
| CN111609128B (en) * | 2020-05-19 | 2021-09-21 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle |
| CN111609129A (en) * | 2020-05-20 | 2020-09-01 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle with same |
| CN111609129B (en) * | 2020-05-20 | 2021-07-20 | 蜂巢传动系统(江苏)有限公司 | Emergency parking device for vehicle and vehicle with same |
| CN114673786A (en) * | 2020-12-24 | 2022-06-28 | 丰田自动车株式会社 | Vehicle parking locking mechanism |
| CN114673786B (en) * | 2020-12-24 | 2023-08-08 | 丰田自动车株式会社 | Vehicle parking locking mechanism |
| CN114135657A (en) * | 2021-11-29 | 2022-03-04 | 江铃汽车股份有限公司 | Gearbox P-gear returning control system and strategy supporting full-automatic car washing function |
| CN114321358A (en) * | 2021-12-31 | 2022-04-12 | 中国第一汽车股份有限公司 | Hydraulic push rod parking assembly and transmission |
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