JP2024018361A - Vehicles with parking actuators - Google Patents

Abstract

[Problem] To provide a new technique for forcibly releasing a parking lock mechanism. [Solution] The vehicle includes a parking lock mechanism provided in the transmission, a parking actuator having a motor connected to the parking lock mechanism, and electrically connected to the parking actuator, and forcibly releasing the parking lock mechanism. The release tool includes a detachable connector. The release tool is configured to output drive power or a drive command for release to the connector, and the parking actuator is configured to cause the motor to operate the parking lock mechanism in accordance with the drive power or drive command for release inputted to the connector. is configured to release the . [Selection diagram] Figure 1

Description

TECHNICAL FIELD The technology disclosed in this specification relates to a vehicle that runs on a road surface, and particularly relates to a vehicle that has a parking actuator.

Patent Document 1 describes a vehicle having a parking actuator. The parking actuator is an electric unit for operating (activating and releasing) the parking lock mechanism in the transmission, and includes a motor mechanically connected to the parking lock mechanism.

JP 2019-156077 Publication

When a vehicle malfunctions, the vehicle may be towed away. In this case, it is desirable to release the parking lock mechanism, but depending on the location and state of the failure, it is possible that the parking actuator cannot be operated and the parking lock mechanism cannot be released. The present specification provides a new technique for forcibly releasing a parking lock mechanism with a simple configuration.

The technology disclosed in this specification is embodied in a vehicle. This vehicle includes a parking lock mechanism provided in the transmission, a parking actuator having a motor connected to the parking lock mechanism, and a parking actuator that is electrically connected to the parking actuator and has a motor for forcibly releasing the parking lock mechanism. The release tool includes a detachable connector. The release tool is configured to output drive power or a drive command for release to the connector, and the parking actuator has a motor that releases the parking lock mechanism in response to the drive power or drive command input to the connector. It is configured as follows.

According to the above configuration, the parking lock mechanism can be forcibly released by connecting the release tool to the connector. The release tool may directly supply drive power for release to the motor, or may issue a drive command for release to the parking actuator so that drive power for release is supplied to the motor. may be supplied. Further, the release tool may obtain power from the vehicle or may have its own power supply built-in.

FIG. 1 is a block diagram showing the configuration of main parts of a vehicle 10 according to a first embodiment. FIG. 2 is a block diagram showing the configuration of main parts of a vehicle 110 according to a second embodiment. FIG. 3 is a block diagram showing the configuration of main parts of a vehicle 210 according to a third embodiment.

(Embodiment 1) A vehicle 10 according to Embodiment 1 will be described with reference to FIG. 1. As shown in FIG. 1, the vehicle 10 includes a transmission 12, a parking lock mechanism 14 provided within the transmission 12, and a parking actuator 16 for the parking lock mechanism 14. The parking actuator 16 is an electric unit that operates (activates and releases) the parking lock mechanism 14 . The parking actuator 16 is connected to an auxiliary circuit 30 of the vehicle 10 and is configured to receive power from an auxiliary battery 32 during normal times.

Parking actuator 16 includes a motor 18 mechanically connected to parking lock mechanism 14 and a controller 20 that controls the operation of motor 18 . The control device 20 can rotate the motor 18 in forward and reverse directions according to operation commands given from a higher-level control unit. When the motor 18 rotates in the forward direction, the parking lock mechanism 14 is activated, and when the motor 18 rotates in the reverse direction, the parking lock mechanism 14 is released. When the parking lock mechanism 14 is activated, the parking lock mechanism 14 engages with a gear within the transmission 12, thereby mechanically prohibiting rotational movement within the transmission 12. Note that the specific configuration of the parking lock mechanism 14 is not particularly limited.

Vehicle 10 further includes a connector 22. Connector 22 is electrically connected to motor 18 of parking actuator 16 via wire harness 24 . The connector 22 is configured such that a release tool 40 prepared separately from the vehicle 10 can be attached to and detached from the connector 22 . The release tool 40 is an electrical device for forcibly releasing the parking lock mechanism 14 when the parking actuator 16 becomes unavailable due to a malfunction of the vehicle 10, for example. The release tool 40 may be permanently installed in the vehicle 10 or may be provided at a road service provider or the like.

The release tool 40 includes a connector 42 that can be attached to and removed from the connector 22 of the vehicle 10, and a release circuit 44 that is electrically connected to the connector 42. The release circuit 44 is provided with a battery 46 that is a self-power source of the release tool 40, a switch 48 that electrically opens and closes the release circuit 44, and the like. Without limitation, battery 46 may be a secondary battery that can be recharged repeatedly. Note that the release tool 40 does not necessarily need to include the battery 46, and may be configured to receive power from the auxiliary battery 32 of the vehicle 10.

With the above configuration, when forcibly releasing the parking lock mechanism 14, connect the connector 42 of the release tool 40 to the connector 22 of the vehicle 10, operate the switch 48 of the release tool 40, and close the release circuit 44. good. A connector 42 of the release tool 40 is electrically connected to a battery 46, and drive power for release is output from the connector 42 to the connector 22 of the vehicle 10. The drive power input to the connector 22 is supplied to the motor 18 via the wire harness 24. Here, the wire harness 24 is connected to the motor 18 so that the driving power from the connector 22 causes the motor 18 to rotate in the reverse direction. As a result, the parking lock mechanism 14 is forcibly released.

(Embodiment 2) A vehicle 110 according to Embodiment 2 will be described with reference to FIG. 2. As shown in FIG. 2, in the vehicle 110 of this embodiment, the configuration of the parking actuator 16 is changed compared to the vehicle 10 of the first embodiment. Since the rest of the configuration is the same as the vehicle 10 of the first embodiment, the same reference numerals are used to omit redundant explanation.

The parking actuator 16 in this embodiment includes a plurality of relays 26 , and the motor 18 is connected to an auxiliary battery 32 via the plurality of relays 26 . The plurality of relays 26 include a first relay 26a, a second relay 26b, a third relay 26c, and a fourth relay 26d. As understood from FIG. 2, when the first relay 26a and the second relay 26b are energized, the motor 18 rotates in the forward direction, and when the third relay 26c and the fourth relay 26d are energized, the motor 18 rotates in the reverse direction. . The control device 20 can rotate the motor 18 in forward and reverse directions by selectively energizing the plurality of relays 26 .

Also in this embodiment, the wire harness 24 is connected to the motor 18 so that the drive power from the connector 22 causes the motor 18 to rotate in the reverse direction. Thereby, as in the case of the first embodiment, the parking lock mechanism 14 can be forcibly released using the release tool 40. Note that, like the first embodiment, the release tool 40 may be configured to be able to use the auxiliary battery 32 of the vehicle 10 as a power source without incorporating the battery 46.

(Embodiment 3) A vehicle 210 according to Embodiment 3 will be described with reference to FIG. 3. As shown in FIG. 3, in the vehicle 210 of this embodiment, the circuit configuration related to the connector 22 is changed compared to the vehicle 10 of the second embodiment. Specifically, the connector 22 is connected to the electromagnetic coils of the third relay 26c and the fourth relay 26d via a wire harness 28. For convenience of illustration, between FIG. 2 and FIG. 3, the positions of the first relay 26a and the third relay 26c, the positions of the second relay 26b and the fourth relay 26d, and the direction of the motor 18 are as follows. The illustration is horizontally reversed.

Also in the vehicle 210 of this embodiment, when forcibly releasing the parking lock mechanism 14, the connector 42 of the release tool 40 is connected to the connector 22 of the vehicle 10, and the switch 48 of the release tool 40 is operated to release the release circuit 44. All you have to do is close the circuit. The connector 42 of the release tool 40 is electrically connected to the battery 46, and the power of the battery 46 is output from the connector 42 to the connector 22 of the vehicle 10. However, the power input to the connector 22 is supplied not to the motor 18 but to the third relay 26c and the fourth relay 26d, and excites these relays 26c and 26d. As a result, driving power is supplied from the auxiliary battery 32 of the vehicle 10 to the motor 18 in a direction that causes the motor 18 to rotate in the reverse direction. As a result, the parking lock mechanism 14 is forcibly released.

As described above, in the vehicle 210 of the present embodiment, the power output by the release tool 40 is not the driving power for driving the motor 18, but is used to drive specific relays 26c and 26d in order to drive the motor 18 in the opposite direction. configured to be energized. That is, the release tool 40 is configured to give a drive command for rotating the motor 18 in the opposite direction (that is, a drive command for release) instead of the control device 20 of the parking actuator 16. The vehicle 210 is configured to rotate the motor 18 in the opposite direction in response to the release drive command input to the connector 22 . Note that, like the first and second embodiments, the release tool 40 may be configured to be able to use the auxiliary battery 32 of the vehicle 10 as a power source without incorporating the battery 46.

10, 110, 210: Vehicle, 12: Transmission, 14: Parking lock mechanism, 16: Parking actuator, 18: Motor, 22: Connector, 26: Relay, 40: Release tool

Claims (1)

A vehicle,
A parking lock mechanism provided in the transmission,
a parking actuator having a motor connected to the parking lock mechanism;
a connector electrically connected to the parking actuator and configured to be detachable from a release tool for forcibly releasing the parking lock mechanism;
The release tool is configured to output drive power or a drive command for release to the connector,
The parking actuator is configured such that the motor releases the parking lock mechanism in response to the drive power or the drive command input to the connector.
vehicle.

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