CN201818779U

CN201818779U - Automatic gear shifting device for gearbox

Info

Publication number: CN201818779U
Application number: CN2010202988516U
Authority: CN
Inventors: 托马斯·奥特吉布伦斯
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2009-08-27
Filing date: 2010-08-18
Publication date: 2011-05-04
Anticipated expiration: 2020-08-18
Also published as: DE102009028934A1

Abstract

The utility model relates to an automatic gear shifting device for a gearbox of a motor vehicle, which is provided with at least one selection device, and especially a shift lever 11, wherein a driver controls a control device 12 of an electronic gearbox through the selection device, and controls a locking function in parking of an automatic gearbox through a locking mechanism 13 according to a traveling gear selected on the shift lever 11 and other operating parameters of the motor vehicle, and the function includes an unlocking function which can operated by the driver. According to the automatic gear shifting device, the unlocking function of the locking function in parking can be controlled by the control device 12 of the electronic gearbox through a lagging mode. The utility model also relates to a method for automatic gear shifting of the gearbox of the motor vehicle.

Description

Automatic gear shifting device of gearbox

Technical Field

The present invention relates to a device for automatic shifting of a motor vehicle gearbox according to the preamble of claim 1 and a corresponding method for automatic shifting of a motor vehicle gearbox.

Background

In principle, devices for automatic shifting of motor vehicle transmissions are usually equipped with a parking lock which permits the shift handle to be moved from a "parked" position only when the ignition is activated, and which also prevents theft and accidental movement of the motor vehicle. In addition, when the shift handle is not in the P position, the ignition key is normally locked by the key lock, with the aim of forcing the driver to shift into position "P" in order to ensure the safety of the vehicle before the key is extracted. In certain markets, such as in thailand or some other asian markets, the vehicle should be able to remain in position "N" or other positions where the transmission is not mechanically locked, even if the ignition key is removed and the vehicle is locked. This is necessary to enable the vehicle to move when parking in the second row or when parking in a narrow parking space. For this purpose, unlocking devices are used in the generally known systems for mechanically interrupting the locking of the shift handle, so that this application is achieved. However, it is necessary to remove the cover or the like and, for example, insert a device of flat design into the separating channel or perform a similar operation, which is not easy to handle and usually also does not provide training for the customer in the market.

The known unlocking systems also have other disadvantages, such as the absence of a parking lock and therefore of theft protection and unintended protection of the vehicle against movement. Furthermore, without a key lock, i.e. before the driver removes the key and locks the vehicle, the vehicle is not forced to shift into position "P", i.e. there is also a lack of protection against theft and unintended movement of the vehicle. In addition, the customer needs a special parking key without a departure lock. Furthermore, the steering wheel column likewise cannot be locked. Furthermore, no suitable system associated therewith is provided in the current gear shift systems, which is complicated and expensive by suitable switches and circuits for activating the unlocking function.

Furthermore, a series of devices for automatic shifting of motor vehicle gearboxes is known from the prior art, such as the following reference.

DE 10037575 a1 relates to an electronic unit for automatically activating a parking lock as a function of at least one preset operating parameter or operating state in a motor vehicle, which can be started without using a mechanical key, which unit has means for preventing the automatic activation of the parking lock. In a first variant, the unit for preventing the parking lock from being activated automatically as desired is connected to a directly manually operated pushbutton in the form of a switch-off switch. In a second variant, an electronic unit in a motor vehicle which can be started in operation by an electronic authorization control device with a wireless code transmission device has a mechanism by which the parking lock is prevented from being automatically activated by the insertion of the authorization control device into a receiving lever provided for it. Use of this configuration will prevent undesirable restrictions associated with parking automatic lockout without compromising safety. The described configuration also relates to a motor vehicle, in particular with an electronic entry and driving authorization system, in which no mechanical key is used, and therefore no key can be removed. Such entry and driving authorization systems are, for example, coded cards carried by the driver, which communicate (wirelessly) with authorization detectors built into the motor vehicle. In addition, the parking lock should preferably be activated automatically when leaving the motor vehicle, in principle, in such a way that the parking position is engaged in the presence of the automatic transmission or in such a way that the hand brake is pulled. For example, activation can be effected by opening the driver's door or by unlocking the inner door handle or by the seat occupancy sensor recognizing an empty driver's seat, the activation depending on the possible choice of operating parameters. An automatic activation of the parking lock as a function of the switching off of the internal combustion engine is advantageously provided. If, for example, the parking lock is not engaged in the presence of the operating parameter or operating state, the driver must consciously inform him of this in advance by an active procedure. Furthermore, a direct or indirect manually operated device is provided, which interacts with the electronic unit for the automatic activation of the parking lock. The device preferably has a function equivalent to the insertion of a mechanical ignition key.

DE 10361209B 3 relates to a device for switching a mechanical shifting device between at least two gears, in particular for opening and closing a parking lock of an external selector actuator for an automatic transmission, wherein a shift lever of a transmission system, which can be actuated by a shift lever having a pull rod or push rod, is arranged in a housing, and the parking state is maintained by a lock magnet, wherein a lock lever having a rotary shaft is arranged inside the housing, which lock lever interacts with the lock magnet, wherein the lock lever is connected by a return lever having a lock pin and a rotary shaft to the pull rod or push rod having a rotary shaft and a slide rod, which can be moved by the shift lever of the transmission system. Furthermore, it is preferred that the slide bar extends in a U-or bridge shape on the shift lever of the drive train, and that the return lever rests against a lateral support of the U-or bridge-shaped slide bar. While the parking state P is preferably maintained by a spring that latches the magnet. Furthermore, it can be provided that the return lever is designed to be flexible with regard to compactness and with regard to the use of the pull and push system. In particular, such a design should result in a system which enables easy release of the parking position even when the system is preloaded by actuating the push button before the foot brake is depressed during automatic shifting.

DE 19625019 a1 relates to a motor vehicle having an engine and an automatic transmission, which has at least one selector device as an operating element, by means of which the driver controls an electronic transmission control device, which controls the parking lock function of the automatic transmission as a function of the drive gear selected at the selector device and as a function of further operating parameters of the motor vehicle. Furthermore, if the vehicle speed is equal to zero and at the same time the ignition circuit is interrupted by the ignition key and then a predetermined time interval is exceeded or the driver's door is opened afterwards, or at the latest when the ignition key is removed from the ignition lock, a parking lock is engaged in the automatic transmission. This has the advantage that the parking lock is automatically engaged, if necessary, depending on additional operating parameters of the motor vehicle. The parking lock is only active when the engine is not operating. The insertion of the parking lock can be effectively prevented when the engine is stopped by using an electromagnet as a locking element. Advantageously, the blocking element only produces its blocking effect when the parking gear P is engaged, and the release of the parking lock is not influenced by the blocking element. Furthermore, the parking lock is preferably prevented from being engaged when the driving speed of the motor vehicle is zero and the driving gear N is selected with the shift lever directly before the engine is switched off or within a predetermined time period after the engine is switched off. The described design is intended to provide an automatic actuation of a parking lock function for an automatic transmission of a motor vehicle.

The two documents DE 10037575 a1 and DE 19625019 a1 relate essentially to a device for automatically inserting a parking lock, for example in a cable-controlled gearbox, or for preventing an unintentional insertion of a parking lock in such a gearbox. In this system, there is no direct mechanical connection, for example, a bowden cable connection between the shift lever and the parking lock. When people are parked, it is also possible to automatically insert the parking lock after the engine has been shut off, even when the door is opened for the first time, which is also avoided in DE 19625019 a 1. It is desirable in conventional systems with such mechanical connections that, at the discretion of the fully intended driver, the unlocking of the parking lock is allowed in the fully determined case after the ignition key has been removed, although the insertion of the parking lock is not prevented for some markets.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is therefore to improve or further improve the known device or method in such a way that the disadvantages of the solutions described above are avoided while retaining the existing advantages, wherein, in particular for some markets, after the ignition key has been removed, unlocking of the parking lock should be allowed in a very certain situation.

This objective is in view of gearbox automatic gear shifting device according to the utility model discloses so realize that the unblock function of parking blocking function can be controlled through hysteresis mode by electronic transmission controlling means. In this way, for the first time, simple means are used to implement a device of this type for automatic transmission shifting, which can be used for some markets to release the parking lock after the ignition key has been removed. Thus, for some markets, such as thailand or some other asian markets, it is possible to put the vehicle in "N" gear, but nevertheless to extract the key and lock the vehicle to enable the person to move the vehicle when parking in the second row and in a narrow parking space. Other advantages are that only software changes are required, no hardware changes are required and no additional devices are required to implement this function, that the anti-theft function remains when in P range and that accidental movement of the vehicle is prevented when in P range.

In a preferred embodiment of the invention, the electronic gearbox control device for controlling the unlocking function of the parking lock function by means of the hysteresis mode comprises at least one electronic actuator. Such an electric actuator preferably acts as an electromagnet and is designed here as a latching magnet. But also any other electric actuator that can perform a parking lock function, such as: a motor or a piezoelectric crystal.

According to a further feature of the method according to the invention, the hysteresis mode has an adjustable hysteresis time for controlling the unlocking function of the parking lock function. During this lag time, the electromagnet may be activated, for example, for a certain time interval when the engine is turned off and the shift handle is in the P position. The time interval may also be adjustable, for example from 0 seconds to several minutes, to ensure theft protection of the vehicle and to prevent accidental vehicle movement when the shift handle is in position P.

Furthermore, according to a further feature of the method according to the invention, the hysteresis mode can be controlled by the electronic transmission control device by an input means, such as by the driver explicitly activating a switch. This may be, for example, the operation of a brake pedal.

According to a final feature of the invention relating to the device, the hysteresis mode can be controlled by the electronic gearbox control means in the form of an accessory function. This can be achieved, for example, for the purpose of product liability, as compared to the features of the possibilities for closing the airbag.

The unlocking function advantageously controls the steering wheel lock in the unlocked state. Thus, the steering wheel lock can be consciously locked when the ignition key is dialed or when no electronic key, such as a key fob, is available. This is necessary when the steering must also be adjusted from the outside for the movement of the motor vehicle when necessary.

The electronic transmission control device, at least as far as the unlocking function part of the parking lock function is controlled by the hysteresis mode, can be installed in any suitable control module or in the control device of the motor vehicle, which does not necessarily have to be a transmission control module. It is advantageous to perform the unlocking function in a control mode of the motor vehicle, which is also at least intermittently energized when the ignition is switched off. Thus, the unlocking function can also be performed after the ignition is turned off, and the control module can be selected so that there is less current consumption or that it is automatically deactivated some time after the ignition is turned off. This reduces the current consumption at the switched-off igniter.

This object is achieved according to the invention in that the electronic transmission control device controls the unlocking function of the parking lock function by means of a hysteresis mode. Furthermore, a related advantage is that avoiding repetition will refer to embodiments of the device according to the invention.

In a preferred embodiment of the method according to the invention, the electronic transmission control controls the unlocking function of the parking lock function by means of at least one electronic actuator, in particular an electromagnet, via the hysteresis mode.

According to a further feature of the method according to the invention, the hysteresis mode controls the unlocking function of the parking lock function by an adjustable hysteresis time.

Furthermore, according to a further feature of the method according to the invention, the electronic transmission control controls the hysteresis mode by an input mechanism, for example by the driver explicitly activating a switch.

Advantageously, the electronic transmission control may be caused to control the hysteresis mode in the form of an accessory function.

Drawings

In the following, embodiments of the invention are explained with the aid of the figures. Wherein,

figure 1 shows a greatly simplified schematic view of a device for automatic gear shifting of a motor vehicle gearbox according to the invention,

figure 2 shows a greatly simplified schematic view of the gear lever of the device for automatic gear shifting of motor vehicle gearboxes according to the invention in the locked position,

figure 3 shows a greatly simplified schematic view of the gear lever of the device for automatic gear shifting of motor vehicle gearboxes according to the invention in the unlocked position,

fig. 4 shows a greatly simplified schematic representation of a selector lever of a device for automatic shifting of motor vehicle transmissions in the locked position and with a depressed unlocking stud according to the invention.

List of reference numerals

10 device for automatic shifting of a gearbox

11 Shift lever

12 electronic gear box control device

13 locking mechanism

14 electromagnet

15 brake pedal

16 unlocking column cap

17 control rod

18 parking lock sensor

19 locking pin

20 ignition lock

21 ignition device

22 Key

Detailed Description

A device for automatic shifting of a motor vehicle transmission according to the invention is generally indicated at 10 and is schematically illustrated in a greatly simplified manner in fig. 1. The device 10 is provided with at least one selection device, in the present case a gear lever 11, by means of which the driver controls an electronic gearbox control device 12, see fig. 1, which controls the parking lock function of the automatic gearbox via a locking mechanism 13, which function comprises an unlocking function operable by the driver, in dependence on the driving gear selected by the gear lever 11 and in dependence on other operating parameters of the motor vehicle. Further, the shift positions P, R, N and D are shown in the figure.

According to the utility model discloses, the unblock function of parking locking function can be controlled through hysteresis mode by electronic transmission controlling means 12. In this way, for the first time, with a simple device, in such a device 10 for automatic transmission shifting, it is possible for some markets to disengage the parking lock after removing the ignition key in a completely defined situation. Thus, for some markets, such as thailand or some other asian markets, it is possible to put the vehicle in "N" gear, but nevertheless to extract the key and lock the vehicle to enable the person to move the vehicle when parking in the second row and in a narrow parking space. Other advantages are that only software changes are required, no hardware changes are required and no additional devices are required to implement this function, that the anti-theft function remains when in P range and that accidental movement of the vehicle is prevented when in P range. Further, in fig. 1, an ignition switch, an ignition system and a key lock are indicated by

reference numerals

20, 21 and 22, respectively.

In a preferred embodiment of the device 10 according to the invention, the electronic transmission control device 12 for controlling the unlocking function of the parking lock function by means of the hysteresis mode comprises at least one (in this case exactly one) electromagnet 14, which is designed here as a locking magnet, see fig. 2, 3 and 4. Furthermore, the hysteresis mode has an adjustable hysteresis time for controlling the unlocking function of the parking lock function. During this lag time, the electromagnet 14 may be activated, for example, for a certain time interval when the engine is turned off and the shift handle is in the P position. The time interval may also be adjustable, for example from 0 seconds to several minutes, to ensure theft protection of the vehicle and to prevent accidental vehicle movement when the shift handle is in position P.

Furthermore, in the device 10 according to the invention, the hysteresis mode can be controlled by the electronic transmission control 12 via an input, for example by the driver explicitly activating a switch. The input mechanism is formed here by a brake pedal 15, by means of which the hysteresis mode can be controlled by operating the brake pedal. The brake pedal 15 is also shown schematically in fig. 1. In addition, fig. 2, 3 and 4 show an unlocking stud 16, a control rod 17 which is in operative connection with the electromagnet 14, a parking lock sensor 18 and a locking bolt 19 which cooperates with the locking mechanism 13.

Finally, the hysteresis mode may be controlled by the electronic transmission control 12 in the form of an accessory function. This can be achieved, for example, for the purpose of product liability, as compared to the features of the possibilities for closing the airbag. The accessory function may be customized for a customer specifically desiring the function. A visual or audible notification may be made to alert the driver of the feature and may also be displayed when the feature is available or turned off during the time course.

In accordance with the utility model discloses an in the aspect of a method for gearbox automatic gear shifting, according to the utility model discloses make electronic transmission controlling means 12 through the unblock function of hysteresis mode control parking locking function. In a preferred embodiment of the method according to the invention, the electronic transmission control device 12 controls the unlocking function of the parking lock function by means of at least one (here exactly one) electromagnet 14 via the hysteresis mode. According to a further feature of the method according to the invention, the hysteresis mode controls the unlocking function of the parking lock function by an adjustable hysteresis time. The electronic transmission control unit 12 controls the hysteresis mode by an input device, for example by the driver specifically activating a switch, which input device is formed here by a brake pedal 15, by actuating which the hysteresis mode can be controlled. Finally, the electronic transmission control 12 may be caused to control the hysteresis mode in the form of an accessory function.

In the following, the advantages of the device according to the invention and of the method according to the invention are explained by means of a comparison of the conventional system with the flow according to the system of the invention:

the flow of "normal" use in a conventional system is as follows:

start/entry vehicle

a) Opening motor vehicle

b) Enter the motor vehicle

c) Inserting key

d) Stepping on the brake pedal

e) Starting engine by driving ignition key

f) Moving the shift lever 11 to the travel position when the brake pedal is depressed;

the preconditions for switching the brake lever from the parking state are:

i. ignition

II, stepping on the brake pedal

III pressing the unlocking stud 16 on the shifting handle

g) The brake pedal is released and the vehicle starts to run.

Parking

1. To the destination, step on the brake

2. Switching the shift lever 11 to "P"

3. Can release the pedal brake pedal

4. Engine shut-down and ignition device

5. Pull out key (the premise is to put in P grade)

6. Hand brake capable of being pulled up

9. Driver leaving motor vehicle

10. Locking motor vehicle for driver

If it is now desired to move the motor vehicle, an emergency unlocking device must be used, which is assumed to be present. In the case of a second row stop, the system according to the invention is required, which enables a shift from P range to, for example, N range by means of the control of the hysteresis mode. The above flow is thus modified as follows:

parking

1.-5. as previously described

6. Is no longer necessary because the motor vehicle is to be movable

7. The driver depresses the brake pedal again so that the locking of the gear lever 11 is released by monitoring the hysteresis of the control module of the gear lever 11

8. The driver moves the shift lever 11 away from the P range;

the precondition for switching the gear lever 11 from the parking position is:

i, flameout, key not in ignition lock

Control module enable unlock in hysteresis mode

III, stepping on the brake pedal

IV, the unlocking column head 16 is pressed on the gear shifting handle

9.-10. As mentioned above

The advantage of this solution over systems that require free access in particular, or other means, is that the driver operates it completely intentionally within a preset time period, rather than giving way in view of the simple accessibility of the unlocking system. Furthermore, the system is activated only in the hysteresis mode, i.e. only when the driver is located in the motor vehicle or at least in the vicinity of the motor vehicle (anti-theft). The selector lever 11 of the device 10 according to the invention for automatic shifting of a motor vehicle transmission is also shown in fig. 2 in the locked position, in fig. 3 in the unlocked position, and in fig. 4 in the unlocked position and with the unlocking stud 16 depressed.

As already mentioned, the described embodiments are only exemplary implementations of the invention, but the invention is not limited thereto, which can also be modified and designed. Thus, the device 10 according to the invention has a design that differs from the above-described type, in particular in its structure.

Claims

1. An arrangement for automatic gear shifting of a motor vehicle gearbox, with at least one selection device, in particular a gear lever (11), by means of which a driver controls an electronic gearbox control device (12), which controls a parking lock function of the automatic gearbox by means of a locking mechanism (13) depending on a driving gear selected on the gear lever (11) and depending on other operating parameters of the motor vehicle, said functions comprising an unlocking function operable by the driver, characterized in that the unlocking function of the parking lock function can be controlled by the electronic gearbox control device (12) by means of a hysteresis mode.

2. An arrangement according to claim 1, characterised in that the electronic gearbox control means (12) for controlling the unlocking function of the parking lock function by the hysteresis mode comprise at least one electronic actuator, in particular an electromagnet (14).

3. The device as claimed in claim 1 or 2, characterized in that the hysteresis mode for controlling the unlocking function of the parking lock function has an adjustable hysteresis time.

4. An arrangement according to any one of claims 1-2, characterised in that the hysteresis mode is controllable by the electronic gearbox control (12) via an input means, such as by the driver explicitly activating a switch.

5. An arrangement according to claim 3, characterised in that the hysteresis mode can be controlled by the electronic gearbox control (12) via an input mechanism, such as by the driver explicitly activating a switch.

6. An arrangement according to any one of claims 1-2, characterised in that the hysteresis mode is controllable by the electronic gearbox control means (12) in the form of an accessory function.

7. An arrangement according to claim 3, characterised in that the hysteresis mode is controllable by the electronic gearbox control means (12) in the form of an accessory function.

8. An arrangement according to claim 4, characterised in that the hysteresis mode is controllable by the electronic gearbox control means (12) in the form of an accessory function.

9. An arrangement according to claim 5, characterised in that the hysteresis mode is controllable by the electronic gearbox control means (12) in the form of an accessory function.

10. The device of any of claims 1-2, wherein the unlock function controls the steering wheel lock in an unlocked state.

11. The apparatus of claim 3, wherein the unlock function controls the steering wheel lock in an unlocked state.

12. The apparatus of claim 4, wherein the unlock function controls the steering wheel lock in an unlocked state.

13. The apparatus of claim 5, wherein the unlock function controls the steering wheel lock in an unlocked state.

14. The apparatus of claim 6, wherein the unlock function controls the steering wheel lock in an unlocked state.

15. The apparatus of claim 7, wherein the unlock function controls the steering wheel lock in an unlocked state.

16. The apparatus of claim 8, wherein the unlock function controls the steering wheel lock in an unlocked state.

17. The apparatus of claim 9, wherein the unlock function controls the steering wheel lock in an unlocked state.

18. Device according to any one of claims 1-2, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

19. A device according to claim 3, characterised in that the unlocking function is implemented in a control module of a motor vehicle which is also at least intermittently energised when the ignition is switched off.

20. The device according to claim 4, characterized in that the unlocking function is implemented in a control module of a motor vehicle which is also at least intermittently energized when the ignition is switched off.

21. The device according to claim 5, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

22. The device according to claim 6, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

23. The device according to claim 7, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

24. The device according to claim 8, characterized in that the unlocking function is implemented in a control module of a motor vehicle which is also at least intermittently energized when the ignition is switched off.

25. The device according to claim 9, characterized in that the unlocking function is implemented in a control module of a motor vehicle which is also at least intermittently energized when the ignition is switched off.

26. The device according to claim 10, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

27. The device according to claim 11, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

28. The device according to claim 12, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

29. The device according to claim 13, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

30. The device according to claim 14, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

31. The device according to claim 15, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

32. The device according to claim 16, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.

33. The device according to claim 17, characterized in that the unlocking function is implemented in a control module of a motor vehicle, which is also at least intermittently energized when the ignition is switched off.