JPS60222308A - Level-control device for automobile - Google Patents

Abstract

PURPOSE:To prevent wasteful power consumption from occurring as well as to solve a problem on drawbacks including battery dying, etc., by installing such a timing device as making the power required for level controlling get supplied only at intervals for the specified time when opening or closing of the door is detected by an on-off sensor. CONSTITUTION:A door switch 12 or an on-off switch 12 is turned to ON with a door 14 opened but to OFF with that closed, while a timing circuit 42 is connected to the door switch 12 in series, and this circuit 42, in turn, becomes a timing device which comes into a state of being energized only at intervals for the specified time during which the switch 12 turns from OFF to ON. A power switch 38 performs on-off control over a supply of the power required for level controlling from a battery 35 to each of parts including a controller 34. With this constitution, even if an ignition key 40 is turned to OFF, provided that a driver alights from his car as leaving the door 14 opened intact, the switch 12 comes to ON, making the circuit 40 operate whereby the power switch 38 comes to ON only at intervals for the specified time so that car leveling takes place, thus it is restorable to the original desired car level.

Description

[Detailed description of the invention] The present invention relates to improvements in vehicle height adjustment devices for automobiles.

In recent years, vehicle height adjustment devices have come into use that adjust the vehicle height to a target vehicle height regardless of the number of passengers or the amount of cargo loaded by adjusting the fluid pressure of pneumatic or hydraulic suspensions based on signals from vehicle height sensors. has been done.

However, in systems where these controls are performed using electronic circuits, solenoid valves, motor-driven compressors, etc., power is supplied to operate these when the ignition key is turned on.

The power was cut off when the ignition key was turned off, so when the ignition key was turned off for parking, etc., the occupants got out of the car and the height of the vehicle rose, and then the occupants tried to get in. There is a problem that makes it difficult to ride when you do this.

Therefore, for example, as shown in Seibun No. 11859-3284, even after turning off the dunnion key,
A vehicle height adjustment device configured to supply power for a predetermined period of time has been proposed.

However, in this type of vehicle height adjustment device, if the predetermined time is set too short, the vehicle height will not be adjusted at all when the occupant exits the vehicle after a period longer than the predetermined time has elapsed after the ignition key was turned off. As a result, the same problem as the conventional one described above occurs, and conversely, if the predetermined time is set too long, the power consumption increases.

A problem occurs in which the battery over-discharges and rises.

The present invention has been devised in view of the above, and is a vehicle height adjustment device configured such that when the ignition switch is turned on, the power necessary for adjusting the vehicle height is supplied, and when the ignition switch is turned off, the power is cut off. The device is equipped with an opening/closing sensor that detects the open/closed state of closed parts such as near or trunk lids, and a predetermined period of time when the opening/closing sensor detects the opening of the door even if the ignition switch is off. The object of the present invention is to provide a vehicle height adjustment device for an automobile, characterized in that it is equipped with a timer device that supplies power necessary for the vehicle height adjustment only during a period of time.

Hereinafter, nine embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 2 generally indicates the body of the automobile, 4 an air spring mechanism interposed between the vehicle body 2 and the front wheels 6, and 8 an air spring mechanism interposed between the vehicle body 2 and the rear wheels 10. The air spring mechanism 12 is a door switch serving as an opening/closing sensor that is turned on when the F-a 14 is opened and turned off when it is closed.

In Fig. 2, 16 is an electric compressor.

A first position 1B supplies compressed air to the compressor 16, and a first position 24 is provided in the passage 20 and communicates only the air spring mechanism 4 and the reserve tank 18.

A solenoid valve 26 is provided in the passage 22 and can select between a second position where the air spring mechanism 4 is opened to the atmosphere and a first position where only the air spring mechanism 8 and the reserve tank 18 are communicated, and a second position where the air spring mechanism 4 is opened to the atmosphere. This is a solenoid valve that can select a second position that opens to the atmosphere. 28 is a front wheel height sensor, 60 is a rear wheel height sensor, 62 is a pressure sensor for the reserve tank 18, and 34 is a front wheel height sensor 28. By inputting the outputs of the rear wheel height sensor 30 and pressure sensor 32, the positions of each solenoid valve 24 and 26 are selected and the combination 1/
This is a controller that controls the on/off of the tweezers 16 as appropriate. Note that one or more of the configurations are similar to well-known configurations.

36 is a battery, and 38 is a power switch that turns on and off the supply of power to various components including the controller 34 mentioned above, which are necessary for adjusting the vehicle height.When the electromagnetic filter 38a is energized, Turns on and electromagnetic coil 3
It is configured to turn off when 8a is not energized. 40 is an ignition switch connected to the electromagnetic filter 38a, and is configured so that when the ignition switch 40 is turned on, the electromagnetic switch 38 is turned on, and when the ignition switch 40 is turned off, the power switch 3B is turned off. . 42 is the door switch 12
The door switch 12 is connected in series with the door switch 2 and is turned on for a predetermined period of time when the door switch 2 is turned on. It is connected to the electromagnetic filter 8a in parallel to the switch 40. Additionally, when the door switch 12 is turned on from off, the power switch 38 can be turned on only for a predetermined time. A lid switch 44 is connected to the timer circuit 42 in parallel with the door switch 12 and is turned on when the trunk lid (not shown) is opened and turned off when it is closed. Similarly, the power switch 38 can be controlled.

According to the above configuration, even if the ignition key 40 is turned off, if the occupant opens the door 14 and exits the vehicle.

Since the door switch 12 is turned on, the timer circuit 42 is activated, and the power switch 8 is turned on only for a predetermined period of time, the vehicle height can be adjusted and returned to the original target vehicle height. Furthermore, even if the occupant remains in the vehicle for a long time with the ignition 1 key 40 turned off, the door 14 or
- Since the trunk lint remains closed, unnecessary power consumption can be prevented, and even if the door 14 or the trunk lint is left open for some reason, the time limit will be set after a predetermined period of time has elapsed. Since the power switch 38 is turned off by the circuit 42, it is possible to prevent wasteful consumption of power, which has the effect of eliminating problems such as overheating.

In the above embodiment, the RITSUPA switch 44 is installed in parallel with the door switch 12, but normally, the work of opening the trunk line F and unloading the luggage in the trunk after opening the door 14 is carried out within a short period of time after the door 14 is opened. The lid switch 12 can also be omitted.

In addition, in the above embodiment, the timer circuit 42 was provided separately from the control 1 controller '54, but if the controller 4 is configured by a My9q computer, the timer circuit 42 is provided with a timer circuit 42. There is no problem even if it is configured so that it is provided inside.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a control system in the above embodiment. 2... Vehicle body, 4, 8... Air spring mechanism. 12... Door switch, 14°° Door tag 18... Reserve tank, 28, Ro0... Vehicle height sensor. Ro4...Controller, Ro6...Hunteri. 38...Power switch. 40...Ignition switch.

Claims (1)

[Claims] In a vehicle height adjustment device configured such that the power necessary for vehicle height adjustment is supplied when the ignition switch is turned on, and the power is cut off when the ignition switch is turned off, the state of the closing member such as a door or trunk lint is opened or closed. an opening/closing sensor that detects the vehicle height adjustment, and a timer that supplies the power necessary for the vehicle height adjustment only for a predetermined period of time when the opening/closing sensor detects that the door is opened even if the ignition switch is off. Vehicle height adjustment device for an automobile characterized by the following: