JPH0558427U - Door lock controller - Google Patents

Abstract

(57) [Summary] [Purpose] When the vehicle is not parked on a slope, the door lock is unlocked so that the passenger cannot get off the vehicle. [Configuration] When the inclination sensor 3 is operating on a slope,
Unless the parking brake is operated to operate the parking sensor 4, the interlock circuit 14 or the forced lock circuit 15
The door lock is not unlocked by the action of, and therefore, it is possible to prevent the driver from getting off the vehicle while forgetting to park.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a door lock control device that prevents a door lock from being unlocked when a parking operation is not performed on a slope or the like.

[0002]

[Prior Art]

 The lock / unlock mechanism of the door locks equipped in the vehicle is one that allows the door locks of all doors to be automatically locked / unlocked by operating the door lock knob and lock / unlock switch of the driver's seat. There is a system in which the door locks of all doors are automatically locked when the vehicle speed exceeds a certain level.

Also, in an automatic vehicle, there has been proposed a vehicle in which all the door locks are automatically locked when the shift lever is operated to a travelable position (actual flat 1-76971). (See the official gazette).

[0004]

[Problems to be solved by the device]

 In the conventional door lock described above, if the knob or the locking / unlocking switch is operated to the unlocking side, the door lock can be unlocked and the passenger can get off the vehicle regardless of the parking operation.

Therefore, when the vehicle is parked on a slope or the like, if the driver forgets to operate the parking brake or forgets to operate the shift lever to the parking position in an automatic vehicle, the vehicle may run out of control. is there.

The present invention has been made to solve the above problems, and controls the door lock so that the door lock cannot be unlocked and the passenger cannot get off when the parking operation is not performed on a slope or the like. The purpose is to provide a device.

[Means for Solving the Problems] The above-described object is to provide an actuator for locking and unlocking a door lock, a locking / unlocking operation switch, an inclination sensor for detecting an inclination in the front-rear direction of a vehicle, and a parking operation for a parking brake. A parking sensor for detecting and an interlock circuit for preventing the unlocking operation of the actuator by disabling the unlocking operation of the locking / unlocking switch when the tilt sensor operates and the parking sensor does not operate. Can be achieved by

Further, an actuator for locking and unlocking the door lock, a door lock detection switch for detecting locking and unlocking of the door lock, an inclination sensor for detecting a front-rear tilt of the vehicle, and a parking brake for parking. When the door lock detection switch detects the unlocking of the door lock when the parking sensor that detects the operation and the tilt sensor are activated and the parking sensor is not activated, the actuator is activated to the lock side. It can also be achieved by providing a lock circuit.

[0008]

[Action]

 When the tilt sensor is operating on a slope, etc., unless the parking brake is operated to operate the parking sensor, no matter how much the locking / unlocking switch is operated to the unlocking side, the door will be operated by the interlock circuit. The lock is never unlocked.

Further, even when the door lock is temporarily unlocked by operating the knob or the like when the parking sensor is inoperative, the actuator is immediately actuated to the locked side by the action of the forcible lock circuit to forcibly lock the door. Lock it.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of a door lock control device according to the present invention, in which 1 is a vehicle speed sensor that is turned on when the vehicle speed is above a certain level, and 2 is a door of a driver side door. The lock / unlock operation switch provided on the armrest and the like has a contact S ₁ for locking and a contact S ₂ for unlocking.

Reference numeral 3 denotes a tilt sensor such as a mercury switch or a pendulum switch provided at an appropriate position on the vehicle body, which is turned on when the vehicle is parked on a slope or the like and the vehicle body tilts in a front-rear direction above a certain level. It is supposed to be.

A parking sensor 4 is turned on when the parking brake is operated for parking.

Reference numeral 5 is a door lock detection switch for detecting whether or not the door lock device is in a locked or unlocked position, and has a contact S ₃ for detecting a locked state and a contact S ₄ for detecting an unlocked state. ing.

The output terminal of the vehicle speed sensor 1 and the locking contact S ₁ of the locking / unlocking operation switch 2 are connected to the OR circuit 6, and the logical sum of the output signals generated from them is used, that is, the vehicle speed. When it becomes a certain value or more, or when the lock / unlock operation switch 2 is operated to the lock side, an ON signal is output.

The output terminal of the OR circuit 6 and the contact S ₄ for detecting the unlocking of the door lock detection switch 5 are connected to the AND circuit 7, and a logical product of those output signals is taken to lock and lock the door. A forward rotation signal is output to the unlocking actuator 8 to automatically lock the door lock.

The output terminals of the tilt sensor 3 and the parking sensor 4 are connected to an AND circuit 9, and an ON signal is output by taking the logical product of the output signals of these. The output signal from the AND circuit 9 and the output signal converted into the negative logic from the tilt sensor 3 are input to the OR circuit 10, and the output terminal and the unlocking contact S ₂ of the locking / unlocking operation switch ₂ are It is connected to the AND circuit 11.

The output terminal of the AND circuit 11 and the contact S ₃ for detecting the lock of the door lock detection switch 5 are connected to the AND circuit 12, and the logical product of the output signals thereof is used to lock and unlock the door. A reverse rotation signal is output to the actuator 8 for automatically unlocking the door lock.

The output terminal of the AND circuit 9 is connected to the OR circuit 6 after being converted into a negative logic by the inverter 13.

The tilt sensor 3, the parking sensor 4, the AND circuit 9, the OR circuit 10, and the AND circuit 11 provide an interlock circuit 14 for preventing the actuator 8 from being unlocked, and the tilt sensor 3 The parking sensor 4, the AND circuit 9, and the inverter 13 constitute a forcible lock circuit 15 for forcibly operating the actuator 8 to the lock side.

Thus, unless the parking brake is operated when the vehicle is parked on a slope or the like and the tilt sensor 3 is ON, the parking sensor 4 does not output an output signal to the AND circuit 9. No output signal is output to the AND circuit 11 via the circuit 10. Therefore, when the door lock detection switch 5 detects the locked state of the door lock, even if the locking / unlocking switch 2 is operated to the unlocking side, the reverse signal cannot be output to the actuator 8, and the door 8 cannot be output. The lock cannot be unlocked.

As a result, the driver cannot notice that he / she cannot open the door to get off the vehicle and forgets to park.

On the other hand, when the door lock detection switch 5 detects the unlocked state of the door lock when the parking sensor 4 is not operating, an output signal is output to the OR circuit 6 by the action of the inverter 13 of the forced lock circuit 15. Is input, a forward rotation signal is output to the actuator 8 via the AND circuit 7 to forcibly lock the door. Therefore, even if the driver unlocks the lock by, for example, pulling up the door knob, the lock is immediately re-locked, and thus the door cannot be opened and the passenger cannot get off the train, as described above.

As described above, in the above embodiment, the door lock cannot be unlocked by operating the locking / unlocking operation switch 2 unless the parking sensor 4 is turned on. Even if the door lock is temporarily unlocked, the actuator 8 immediately rotates in the forward direction and is re-locked, so that it is not possible to get off the vehicle without forgetting the parking operation on a slope or the like, and it is possible to prevent this parking operation forgetting. ..

When the vehicle is an automatic vehicle, a P position detection sensor (not shown) for detecting the P range (parking position) of the shift lever is provided outside the parking sensor 4, and the P position detection sensor The output terminal of the sensor 4 may be connected to the input terminal of an OR circuit (not shown), and the output terminal may be connected to one input terminal of the AND circuit 9.

With this arrangement, in the automatic vehicle, the door lock cannot be unlocked unless the parking brake is operated or the shift lever is operated to the P range.

[0027]

[Effect of the device]

 According to the present invention, the door lock cannot be unlocked unless a parking operation is performed on a slope, so that the driver does not get out of the car without forgetting the parking operation, which prevents the vehicle from running out of control. You can

[Brief description of drawings]

FIG. 1 is a control circuit diagram showing an embodiment of the device of the present invention.

[Explanation of symbols]

1 Vehicle speed sensor 2 Locking / unlocking switch 3 Tilt sensor 4 Parking sensor 5 Door lock detection switch 6,10 OR circuit 7, 9, 11, 12 AND circuit 8 Actuator 13 Inverter 14 Interlock circuit 15 Forced lock circuit S ₁ , S ₂ , S ₃ , S ₄ contacts

Claims (2)

[Scope of utility model registration request] 1. An actuator for locking and unlocking a door lock, a locking / unlocking operation switch, an inclination sensor for detecting an inclination of a vehicle in a front-rear direction, a parking sensor for detecting a parking operation of a parking brake, and the inclination sensor. And a parking sensor is inactive, the door lock control is provided with an interlock circuit that disables the unlocking operation of the locking / unlocking switch and prevents the actuator from operating toward the unlocking side. apparatus. 2. An actuator for locking and unlocking a door lock, a door lock detection switch for detecting locking and unlocking of a door lock, a tilt sensor for detecting a tilt of a vehicle in a front-rear direction, and a parking operation for a parking brake. And a forcible lock circuit that activates the actuator to the locking side when the door lock detection switch detects unlocking of the door lock when the tilt sensor is activated and the parking sensor is inactive. A door lock control device comprising: