KR100291054B1 - Automatic lift system of footboard for vehicle - Google Patents

Abstract

PURPOSE: An automatic lift system of footboards for a vehicle is provided to meet the convenience of a passenger by lowering the position of a footboard when a door is open and lifting a footboard to a height of floor of the interior of a vehicle while traveling. CONSTITUTION: An automatic lift system of footboards for a vehicle includes a device for detecting opening and shutting of a door of a vehicle(1), a device for detecting if a passenger is riding in a vehicle(2), a device for detecting if a footboard reaches the highest limit(3), a device for detecting if the footboard reaches the lowest limit(4), a device for detecting if a passenger or freight is on the footboard(5), a lift(9) moving the footboard up and down, a drive motor(8) making the moving of the footboard, an ECU(Electronic Control Unit) controlling lifting of the footboard by controlling a switching device(7) according to the data input from the detecting devices, and a switching device controlling the drive motor in a forward or reverse direction according to the control signal from the ECU.

Description

Automatic elevating system

The present invention relates to an elevating apparatus for an automobile, which is located at the same position as a floor of a room when a door is closed, and at the same time, when the door is opened, .

Conventional automobiles have a floor higher than the floor, so a stepped footrest is provided to help passengers get on and off to assist the passengers in and out of the car, and a switch is provided so that the driver can open and close the car door.

Since the pedestal for getting on and off the door near the entrance door of the vehicle is installed in a fixed position, it takes up a large area of the floor of the vehicle, thus becoming one of the main reasons for narrowing the indoor space.

For this reason, in the case of a hermetically closed state, it has been demanded to develop a device for raising and lowering a scaffold for getting on and off to match the floor of the cabin, and for lowering the scaffold for getting on and off.

The present invention has been made in view of the above-mentioned conventional needs, and it is an object of the present invention to reduce the position of a passenger at the time of getting on and off at the time of getting on and off the passenger, The present invention has been made to solve the above problems.

FIG. 1 is a configuration diagram showing a schematic configuration of an elevator foot lifting platform according to the present invention; FIG.

FIG. 2 is a view showing an installation state of various sensors used in the automatic ascending / descending apparatus for an elevating footrest according to the present invention;

FIG. 3 is a view showing an embodiment of an elevating mechanism of an elevator foot lifting device according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1: car door opening / closing detection means 2:

3: rising limit arrival detecting means 4: falling limit arrival detecting means

5: foot pressure detecting means 6: electronic control device

7: switching mechanism 8: drive motor

9: Lift mechanism

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention provides a vehicle door opening / closing detection means (1) for detecting the opening and closing state of a passenger boarding and descending car in an automobile, (2), a rising limit reaching detection means (3) for detecting that the landing platform has reached a rising limit position, a falling limit arrival detecting means (4) for detecting that the landing platform has reached a falling limit position, A pedestrian pressure detecting means 5 for confirming whether the cargo is on the pedestrian's footboard, an elevator mechanism 9 which is a mechanism for moving the footboard up and down, a drive motor 8 which is a power source for causing the elevator mechanism to move up and down, An electronic control unit (6) for controlling the switching mechanism to control the ascending and descending of the ascending and descending footplate according to the information input from the detecting means, and a control unit And a switching mechanism (7) for controlling the forward and reverse rotations of the vehicle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration and operation of an automatic landing gear for an automotive pedestrian platform according to the present invention will be described with reference to the accompanying drawings.

Some sensors essential to the operation of the apparatus are installed as shown in FIG. At this time, the installation position of each sensor is only an embodiment, and it is not necessarily the same as the drawing.

The door opening / closing detecting means 1 is constituted by a normally ON / OFF switch as a means for detecting whether the door 16 of the vehicle is open or closed.

The getting-on / off state detecting means 2 uses a normal infrared ray detector as a means for detecting whether or not the passenger is on the footstep 12 when the footstep 12 is in a low state with the door 16 opened.

The rising limit arrival detecting means 3 detects the rising limit of the foot pedestal main body 11 in accordance with the rise of the foot pedestal body 11 on which the footrest 12 is mounted in the form of a switch provided on the wall surface guider 15 of the step, 11, the slider 17 is turned on at the rising limit and turned off at the falling state.

The falling limit arrival detecting means 4 is also of a switch type provided in the guider 15 on the stepped wall surface so that the slider 17 is turned on at the time of lifting the foot body 11 and turned off at the falling limit .

Therefore, it is possible to know the state in which the position of the foot plate 12 reaches the rising limit or the falling limit in the state of this switch, so that the start and end of the rising and falling operations can be determined.

The foot pressure detecting means 5 is a switch type installed between the footstep body 11 and the footstep 12 as shown in FIG. 3, and the switch is turned on when the passenger is up or the cargo is loaded, This signal can be used to prevent dangerous accidents by stopping dangerous operation.

The electronic control unit 6 is a mechanism for controlling the switching mechanism 7 for on / off controlling the drive motor 8 for starting the elevating mechanism 9. [

At this time, the condition for the electronic control unit 6 to perform the foot lowering control is that the signal from the door opening / closing detecting unit 1 indicates the open state of the door, and the signal from the boarding presence / absence detecting unit 2 and the foot pressure detecting unit (5) indicates that the signal is in a safe state, and the signal of the falling limit arrival detecting means (4) indicates that the signal is in an on state and not yet a falling limit.

On the other hand, the condition for the electronic control unit 6 to perform the foot lift control is that the signal from the door opening / closing detection unit 1 indicates the closed state of the door, and the signals from the arrival and departure state detection unit 2 and the foot pressure detection When the signal from the means 5 indicates the safety state and the signal of the rising limit arrival detecting means 3 indicates that the signal is in an off state and not yet a rising limit.

The switching mechanism 7 is for performing ON / OFF control of the drive motor 8, forward / reverse rotation control, and is composed of a semiconductor switch or a relay switch, or a combination thereof.

The drive motor 8 makes it possible to perform forward rotation or reverse rotation using a DC motor.

An elevator mechanism 9 is constructed in the same manner as the third embodiment and includes a pair of driving gears 18 and 18 'rotated by a driving motor 8, A pair of pinion gears 19 and 19 'that are rotated by engaging with the pinion gears 19 and 19' A pair of links 21 and 21 'which are hinged to the rear surface of the base 20 and 20' and are rotated and reciprocated upward and downward, and sliders 17 are provided on both sides thereof And a lower surface of which is hinged to the pair of links 21 and 21 'so as to vertically reciprocate in accordance with the movement of the links 21 and 21' 11 so as to be stepped on by a passenger.

Accordingly, when the driving motor 8 is rotated, the driving gears 18 ', 18', 19 ', 20', 20 ', 21' and 21 ' When the drive motor 8 is driven in the normal rotation direction when the direction shown in the drawing is assumed to be the forward rotation state of the drive motor 8, (Arrow direction movement in the drawing), and when the drive motor 8 is driven in the reverse rotation, the foot plate main body 11 moves downward.

In the present invention, the present invention provides an automatic landing gear for an automotive undercarriage according to the present invention, which reduces the position of a passenger at the time of landing and landing at the same time as a gate, It is possible to expand the indoor space, so that it is possible to provide safety and convenience to passengers.

Claims (2)

A door opening / closing detecting means (1) for detecting an opening and closing state of a door for a passenger getting on and off; (2) for detecting the presence or absence of a passenger's getting on and off state; A rising limit reaching detection means (3) for detecting that the landing platform has reached a lift limit position; A falling limit arrival detecting means (4) for detecting that the ascending / descending foot has reached a falling limit position; A pedestrian pressure detecting means (5) for confirming whether a passenger or cargo is on the footstep; An elevating mechanism 9 which is a mechanism for moving the elevating foot plate up and down; A drive motor 8 serving as a power source for causing up and down movement of the elevating mechanism 9; An electronic control unit (6) for controlling the switching mechanism (7) in accordance with the information inputted from the detecting means to control the ascending and descending of the ascending and descending footrests; And the switching mechanism (7) for controlling the drive motor (8) in the forward rotation or reverse rotation in accordance with a control signal from the electronic control unit (6). The elevating device according to claim 1, wherein the elevating mechanism (9) comprises a pair of driving gears (18) and (18 ') rotated by a driving motor (8) A pair of rack gears 20 and 20 'reciprocating in accordance with rotation of the pinion gears 19 and 19' and a pair of rack gears 20 and 20 ' A pair of links 21 and 21 'hinged to the back surface of the link 20' and rotated upward and downward and a slider 17 on both sides thereof, And a foot plate 12 attached to the upper surface of the foot plate main body 11. The pedestal 11 is mounted on the pedestal main body 11 by a hinge connection with the links 21 and 21 ' Wherein the automatic lifting / lowering device for a footrest of a car is provided.