JPH04182589A - Automatic opening/closing device for car back door - Google Patents

Abstract

PURPOSE:To improve the extent of operability in a simple mechanism by making a door fully open/close when the output time of an on-off signal out of an on-off switch is less than the specified value, and when it is more than the specified value, operating it for opening or closing for the output time alone. CONSTITUTION:It is provided with an automatic back door on-off device 7 which outputs a driving signal from a driving controller 13 according to an on-off signal to be outputted out of an on-off switch 11, and opens or closes a back door 5 with a driver driven. In this driving controller 13, when an input time of the on-off signal out of the on-off switch 11 is less than the specified value as far as one second or so, all on-off signals are outputted to the driver 10, having the back door 5 fully opened or closed. In addition, when the on-off signal input time is more than the specified value, a partial on-off signal is outputted only at a time when the on-off switch 11 is operated, thus the back door 5 is opened or closed for the time alone.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device that automatically opens and closes a back door disposed on the rear end surface of a one-box type automobile, for example, and particularly relates to a device that automatically opens and closes a back door disposed on the rear end surface of a one-box type automobile. The present invention relates to an improvement in a drive control method that makes it possible to improve the operability of a back door without increasing space or cost.

C. Prior Art] A one-box type automobile has a structure in which a flip-up back door is provided on the rear end surface of the vehicle body to facilitate loading and unloading of luggage. When cargo is frequently loaded and unloaded in this one-box vehicle, the back door must be raised and lowered by a person each time, which poses a problem in that the workability of loading and unloading the cargo is low. In order to improve such work efficiency, the present applicant has proposed an automatic opening/closing device for the back door (for example, Japanese Patent Application Laid-Open No. 1999-1991).

314620, Japanese Unexamined Patent Publication No. 1-314621), this automatic opening/closing device includes a drive device that drives the back door to open and close;
It is comprised of an opening/closing switch that outputs an open or close signal for the back door, and a drive side 'a device that outputs a drive signal to the drive device in response to the open or close signal from the switch. In addition, the above open/close switch has an operation button on the open side,
Or, it is common to have a structure in which it is pressed toward the closing side, and this is disposed near the driver's seat for easy operation.

[Problem to be solved by the invention]

However, with the above-mentioned conventional automatic opening/closing device, in order to fully open or close the back door, it is necessary to hold down the switch until the door is fully open or fully closed, and there is a need to improve operability in this respect. There is.

Here, as a way to improve such operability, we created a switch that opens and closes the door only as long as it is held down.

It is conceivable to provide a switch that fully opens or closes when pressed twice. However, it is difficult to arrange a plurality of switches in the limited space of the driver's seat, and there is a concern that the circuit configuration becomes complicated and the cost increases.

The present invention has been made in view of the above-mentioned conventional situation, and provides an automatic opening/closing device for a vehicle back door that can improve the opening/closing operability of the back door while suppressing an increase in the installation space and cost of an opening/closing switch. The purpose is to

[Means to solve the problem]

Therefore, the present invention provides a drive device that drives the back door to open and close, an open/close switch that outputs an open or close signal, and a drive control that outputs a drive signal to the drive device according to the open or close signal from the switch. In the automatic opening/closing device for a vehicle back door, the drive control device is configured to fully open or fully close the back door when an input time of an open signal or a close signal from the opening/closing switch is less than a predetermined value. The device is configured to output a full opening/closing signal to the driving device, and output a partial opening/closing signal to open or close the back door only during the period in which the opening/closing switch is operated when the input time is equal to or greater than a predetermined value. It is characterized by

Here, the predetermined value is a time for determining whether to fully open or close the door, or to partially open or close the door, and is set to about 1 second, for example.

[Effect]

According to the automatic opening/closing device for a vehicle back door according to the present invention, in order to fully open or close the back door, it is sufficient to press the opening/closing switch to the open side or to the close side for the above-mentioned set time, thereby opening the door. Fully open automatically.

Or it can be fully closed. In addition, if you want to open or close the back door halfway, just press and hold the opening/closing switch above for more than the set time until the door reaches the desired opening. Can be opened and closed.

In this way, in the present invention, opening from the opening/closing switch.

Or, when the input time of the close signal is less than a predetermined value, a full open/close signal is output to fully open or close the back door, and when the input time is greater than the predetermined value, the back door is opened only while the open/close switch is operated. , or a partial opening/closing signal to cause the opening/closing to be output, so that a full opening/closing operation or a partial opening/closing operation can be selected depending on the time it takes to press the opening/closing switch, and operability can be improved accordingly. Moreover, since only one on/off switch is required, it is possible to avoid an increase in installation space, and to simplify the circuit configuration, thereby suppressing an increase in cost.

〔Example〕

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

1 to 4 are diagrams for explaining an automatic opening/closing device for a back door for a vehicle according to an embodiment of the present invention.

In the figure, 1 is a one-box type car in which the device of this embodiment is adopted, and a front door 3 is located at the front of a box-shaped car body 2, and a sliding side door 4 is located at the center and can be opened and closed. A back door 5 is provided at the rear end opening 2b. The upper edge 5 of this back door 5
a is rotatably supported by a hinge 6 on the roof panel 2a.

The back door 5 is equipped with an automatic opening/closing device 7 of this embodiment.
is installed. This automatic opening/closing device 7 includes a driving device 10 consisting of a hydraulic cylinder 8 and a hydraulic pressure generating mechanism 9 that drive the back door 5 to open and close, and an opening/closing switch 11 that outputs an open signal and a close signal. It is composed of courtesy switches 12a and 12b, and a drive control device 13 that outputs a drive signal to the drive device IO.

In the hydraulic cylinder 8, a piston (not shown) is inserted into the cylinder main body 8a while being urged in the contraction direction by the weight of the back door 5, and a piston rod 8b is connected to the piston, and one end of the rod 8b is inserted. It has a structure that protrudes outward. Further, the cylinder body 8a is pivotally supported on the edge of the rear end opening 2b of the vehicle body 2, and the protruding end of the piston rod 8b is connected to a link member 14 that is pivotally supported on the inner panel of the back door 5. .

The oil pressure generating mechanism 9 has a reducer 16 connected to the output shaft of the electric motor 15, and a drive arm 17 fixed to the output shaft 16a of the reducer 1116 is rotatably connected to the piston rod 18a of the oil pressure generating cylinder 18. It has a similar structure. The hydraulic pressure generating cylinder 18 has a piston (not shown) slidably inserted into the cylinder body 18b, and the inner end of the piston rod 18a is brought into contact with the piston, and the piston and the cylinder body 18b form a hydraulic pressure chamber. It has a structure that forms. In addition, this cylinder body 18
One end 19a of a hydraulic hose 19 is connected to the hydraulic chamber b, and an extended end 19b of the hose 19 is connected to the cylinder body 8a.

This allows the piston rod 18a to be moved to the drive arm 1.
7, hydraulic pressure is generated, this hydraulic pressure acts on the hydraulic cylinder 8 from the hydraulic hose 19, the piston rod 8b of the cylinder 8 moves forward, and the back door 5 opens. Further, when the drive arm 17 moves the piston rod 18a backward, the drive arm 17 follows the piston rod 18a and moves backward by the hydraulic pressure from the hydraulic cylinder 8 side, and the back door 5 is closed.

The open/close switch 11 is disposed near the steering knob 20 of the vehicle body 2, and is configured to output an open signal or a close signal to the drive side W device 13. Further, the courtesy switches 12a and 12b are respectively disposed in the rear end openings 2b & 1 of the vehicle body 2, and are turned on when the back door 5 is opened to turn on the courtesy lamp, and turned off and turned off when the back door 5 is closed. It is something that makes you Further, each of the courtesy switches 12a and 12b is configured to output an OFF signal to the drive control device 13 when pushed in and released, and an ON signal when projected outward.

When the off signal is input from the courtesy switches 12a and 12b, the drive control device 13 outputs a stop signal when the back door 5 is in the opening/closing operation, and outputs a close signal when the back door 5 is fully open. It is configured to output to the drive device IO. Further, when an open signal or a close signal is input from the open/close switch 11, the drive control device 13 closes the back door 5 when the input time of this signal is less than a predetermined value, for example, less than 1.0 seconds. A full open/close signal for fully opening or fully closing is output to the drive device 10, and when the input time of the signal is longer than a predetermined value, for example 1.0 seconds or more, the back door 5 is opened and closed when the open/close switch 11 is pressed. It is configured to output a partial opening/closing signal to the drive device 10 to open or close only the period during which the opening/closing operation is performed. In addition, 21 is a solenoid that releases the lock striker from the door lock mechanism of the back door 5 when an open signal is input from the opening/closing switch 11, and 22 is a solenoid that releases the lock striker from the door lock mechanism of the back door 5. It is a bush rod that releases the.

Next, the effects of this embodiment will be explained.

First, an overview of the operation of the automatic opening/closing device 7 of this embodiment will be explained.

To fully open or close the back door 5, press the open/close switch 11 with your finger to the open or close side and immediately release your hand, and the back door 5 will automatically fully open or close. do. Also, during this operation, the courtesy switch lla, 1
If you press and release 2b, it will stop immediately. Further, when opening and closing the door to a desired degree of opening, the opening/closing switch 11 may be kept pressed until the door reaches the desired degree of opening.The back door 5 opens and closes only while the switch is being pressed. In this case, the timing of whether to keep pressing the open/close switch 11 or to release the hand can also be determined based on the door unlocking amount of the solenoid 21.

Next, the operation of the drive control device 7 will be explained in detail along the flowchart of FIG.

To open the back door, press the open/close switch 11 to the door open side. I device 7 activates a buzzer,
After 0.5 seconds, turn on the solenoid 21 and close the door lock I.
! After releasing the system and waiting for 0.5 seconds, solenoid 21
is turned off (steps 51 to S6), and in step s7 it is determined whether or not the open/close switch 11 is pressed. If the switch 11 is pressed, the dish operator holds the open/close switch 11 for a predetermined period of time or longer. If it continues to be pressed, it is determined that it is a partial opening/closing operation, the electric motor is rotated in the normal direction, and after a waiting time of 1 second, it is determined whether or not the opening/closing switch 11 is pressed (steps 38 to 51o). If the limit switch is off, read the motor rotation speed, and if it is 0°5 rpm or higher, determine whether the limit switch is on or off as normal (steps 511-312); if the limit switch is off, return to step s1o and switch switch II The motor rotates while the switch is kept pressed, and when the switch is released, the process moves to step s13 where the motor is stopped, the buzzer sound is changed, and the buzzer is stopped after 18 seconds (steps SL4 to SL316). Note that if the open/close switch 11 is kept pressed, the motor will rotate until the limit switch is turned on, and the back door will be fully opened. In addition, if the motor rotation speed is 0.5 rps or less in step Sll, it is determined that some obstacle is hitting the door,
Turn off the motor.

Further, in step S7, if the opening/closing switch is off, that is, if the operator releases the opening/closing switch immediately after pressing the opening/closing switch, it is determined that the opening/closing operation is a full opening/closing operation, and step 517
After a predetermined waiting time, the electric motor is rotated in the forward direction (step 818), and after a one-second waiting time, the status of the left and right courtesy switches and the motor rotation speed are read, and if these are on, If it is 0.5rpa or more, the motor continues to rotate until the limit switch is turned on, and when the limit switch is turned on, the motor is stopped and the buzzer sound is changed to notify that the back door is fully opened, and after 1 second. Stop the buzzer (step,
Steps S19 to S527), and step S520.
At step 21, when the courtesy switch is turned off by pressing and releasing it, the motor immediately stops.

Note that the closing operation of the door is also performed in the same manner as the opening operation described above.

In other words, if the open/close switch is pressed to the close side for less than 1.0 seconds, it will be fully closed automatically, and if it is pressed for more than 1.0 seconds, the back door will rotate to the close side for the time the switch is pressed. I will do it.

As described above, according to the automatic opening/closing device 7 of the present embodiment, when the input time of the opening/closing signal from the opening/closing switch 11 is less than 1.0 seconds, the back door 5 is fully opened or fully closed.
If the input time of the close signal exceeds 1.0 seconds, the back door 5 will be opened and closed only while this switch is held down, so you can select full opening/closing operation or partial opening/closing operation with one touch, and that's it. Operability can be improved. Further, since the above-mentioned re-operation can be performed using one open/close switch 11, it is possible to avoid the problem of expansion of the installation space that would occur when a plurality of the above-mentioned switches are provided, and it is also possible to simplify the circuit configuration and suppress an increase in cost.

Although the above embodiment has been described using the hydraulic cylinder 8 as the drive device 10 for the back door 5, the drive device of the present invention is not limited to this. may be configured.

〔Effect of the invention〕

As described above, according to the automatic opening/closing device for a vehicle back door according to the present invention, opening from the opening/closing switch is possible.

Or, if the input time of the close signal is less than a predetermined value, a full open/close signal is issued to fully open or close the back door, and if the input time is greater than a predetermined value, only during the period when the open/close switch is operated. Since it is configured to output a partial opening/closing signal to open or close, it is possible to select full open, fully closed, or open/close to the desired opening with one touch, which has the effect of improving operability. Since only one is required, it is possible to avoid an expansion of the cast space, and it is also effective in suppressing increases in costs.

[Brief explanation of the drawing]

1 to 4 are diagrams for explaining an automatic opening/closing device for a back door for a vehicle according to an embodiment of the present invention, and FIG. 1 shows a one-box type automobile to which the automatic opening/closing device is applied. 2 is a rear view thereof, FIG. 3 is a perspective view showing the overall configuration of the drive device, and the fourth section is a flowchart for explaining the operation of the drive control device. In the country, l is a one-box automobile (vehicle), 5 is a back door, 7 is an automatic opening/closing device, 10 is a drive device, 11
13 is an open/close switch, and 13 is a drive control device. Patent Applicant Daihatsu Motor Co., Ltd. Agent Patent Attorney Tsutomu Figure 1 Figure 3 Engraving of Drawings Figure 4 (τme 1) Engraving of Drawings Collection 4: Diagram (Su-) Procedural Amendment Written Type) % Formula % ■, Indication of the case 1990 Patent Order No. 311958 2, Name of the invention Automatic opening/closing device for vehicle back door 3, Person making the amendment Relationship to the case Patent applicant Address 1-1 Daihatsu-cho, Ikeda City, Osaka Prefecture Title name (
296) Daihatsu Motor Co., Ltd. 4, Agent ■550 Address 1-19-23-5 Utsubohonmachi, Nishi-ku, Osaka Date of amendment order January 28, 1991 7 Contents of amendment
ゝ＼; Go Replace Figure 4 with the attached sheets (Figure 4 (Part 1), Figure 4 (Part 2)). -51;

Claims (1)

[Claims] (1) A drive device that opens and closes the back door disposed on the rear end surface of the vehicle, an open/close switch that outputs an open signal or a close signal for the back door, and an open signal from the switch;
Or, in an automatic opening/closing device for a back door comprising a drive control device that outputs a drive signal corresponding to a closing signal to the drive device, the drive control device is controlled by the opening signal from the opening/closing switch or the input time of the closing signal. is less than a predetermined value, a full open/close signal to fully open or fully close the back door is output to the drive device, and when the input time is greater than or equal to a predetermined value, the back door is opened only during the period in which the open/close switch is operated. An automatic opening/closing device for a back door for a vehicle, characterized in that the device is configured to output a partial opening/closing signal for opening or closing to the drive device.