JPH01314620A - Automatic closing gear for on-vehcle back door - Google Patents

Abstract

PURPOSE:To prevent a back door positively from being opened carelessly while a vehicle is running, and thereby improve safety by letting the back door be opened only when a closing switch is switched over to an open side with a hand brake applied. CONSTITUTION:The upper periphery of a back door 6 is pivotally supported by a hinge 7 onto a roof panel 2c at the upper periphery of an opening 2b formed in the rear end face of a vehicle body 2. In this case, in order to open the back door 6, a closing switch 12 is switched over to an open side while a hand brake 21 is being actuated so as to let the actuating motor 9 of a driving mechanism be rotated normally. Following which, the back door 6 is rotated upward with a connecting link 11 extended, a limit switch 17a is turned on so as to let the actuating motor 9 be suspended as soon as the back door 6 is fully opened. On the other hand, in order to close the back door 6, the closing switch 12 is switched over to an close side as to let the actuating motor 9 be rotated reversely.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an automatic opening/closing device that can ensure safety when automatically opening/closing a back door disposed on the rear end surface of a one-box automobile, for example. Regarding.

[Conventional technology]

In general, one-box vehicles have wide openings on the sides and rear end of the vehicle body to facilitate loading and unloading of luggage, and these openings are equipped with sliding side doors and flip-up back doors, respectively. The opening is configured to be opened and closed by the opening.

[Problem that the invention seeks to solve]

However, when frequently loading and unloading luggage in the one-box vehicle, the back door must be raised and lowered each time, which poses a problem, especially for people with weak physical strength and physical strength. From this,
In recent years, there has been a demand for automating the opening and closing of backdoors.

Therefore, the inventor of the present invention proposed a method for automatically opening and closing the back door by fixing a drive motor to the back door, fixing a bracket to the vehicle body, and connecting the placket and the drive motor with a V-shaped connection link. We have developed an automatic opening/closing device that includes a drive device consisting of a motor and an opening/closing switch that turns the drive motor on and off. According to this device,
By rotating the drive motor, the connecting link expands and contracts, and the back door can be automatically opened and closed, thereby greatly reducing the labor involved in opening and closing the back door and improving work efficiency.

By the way, in the above automatic opening/closing device, an interlock mechanism that prevents the back door from opening while driving, or from starting with the back door open, ensures safety in the opening/closing operation of the back door. It is necessary to do so.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide an automatic opening/closing device for a vehicle back door that can ensure safety in automatic opening/closing operations of the back door.

[Means for solving problems]

Therefore, the specific invention of the present application is an automatic back door opening/closing device comprising a drive device for opening/closing the back door disposed at the rear end opening of a vehicle, and an opening/closing switch for turning the device on and off. handbrake detection means that outputs a brake-on signal when the brake is applied; and opening/closing control that outputs a door open signal to the drive device when the brake-on signal from the detection means and the switch open signal from the opening/closing switch are input. It is characterized by having the means.

Further, a related invention of the present application is an automatic opening/closing device equipped with a drive device for driving the opening and closing of a back door, which includes a handbrake detection means for outputting a brake off signal when the handbrake is released, and a brake off signal from the means. The present invention is characterized in that it includes opening/closing control means for outputting a back door close signal to the drive device when a back door close signal is input.

[Effect]

According to the automatic opening/closing device for a vehicle back door according to the present invention, the opening/closing control means outputs the back door opening signal to the drive device only when the handbrake is activated and the opening/closing switch is switched to the open side. Therefore, since the back door opens only when the handbrake is applied, that is, when the vehicle is parked, it is possible to reliably prevent the door from being opened due to an erroneous operation while the vehicle is running, thereby ensuring safety.

Further, in the related invention of the present application, when the handbrake is released, a brake off signal from the handbrake detection means is input to the opening/closing control means, and the back door is thereby immediately closed, so that starting with the back door open is not possible. This can be prevented and safety can be ensured.

〔Example〕

Hereinafter, embodiments of the present invention will be described 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, and this embodiment will be explained by taking as an example a case where it is applied to a one-box type automobile.

In the figure, ■ is a one-box type automobile, which has a front seat 3a and a foldable rear seat 3b arranged inside a box-shaped vehicle body 2, and a luggage compartment 3C is formed behind the rear seat 3b. It is configured. Further, a front door 4 is disposed at the front end of the side panel 2a of the vehicle body 2, and a side door 5 is disposed at the center thereof so as to be openable and closable.

Further, an opening 2b for loading and unloading cargo is formed on the rear end surface of the vehicle body 2, and a back door 6 is disposed in the opening 2b. The upper edge 6a of the back door 6 is pivotally supported by a hinge 7 to the roof panel 2c on the upper edge of the opening 2b, so that the opening 2b can be opened and closed by rotating the pack door in the vertical direction. It is composed of

An automatic opening/closing device 8 is disposed in the pack door according to this embodiment, and this automatic opening/closing device 8 includes a drive device 8a.
, opening/closing switch 12 and courtesy lamp switch 13.
Handbrake detection means 21a and opening/closing control means 14
It consists of

The drive device 8a is a drive motor 9. fixed to the back door 6. A connecting placket 10 fixed to a quarter inner panel (not shown) and a connecting link 1 connecting the two.
1, and the drive motor 9 is fastened and fixed to the left side of the inner panel 6b of the back door 6 near the hinge 7 via a fixing member 15. Further, a reduction gear box 9a is connected to the drive motor 9, and although not shown, a worm gear is attached to the input shaft of the motor 9, and a clutch mechanism is connected to the gear. It is constructed by connecting an output shaft 18 to a clutch mechanism. Further, one end of the clutch cable 9b is connected to the clutch mechanism, and the other end is connected to a door lock mechanism (not shown) at the bottom of the back door 6, so that by pressing the door lock cylinder 16, the clutch cable 9b is connected to the clutch cable 9b. The clutch mechanism is disconnected and can be opened and closed manually. Furthermore, the gear box 9
A lever switch 17a is attached to the side surface of a, and the switch 17a stops the rotation of the drive motor 9 when the pack door is fully opened.

Further, the connecting link 11 includes a pair of arms 11a, 1
The other end of this arm lla is fixed to the output shaft 18 of the drive motor 9, and the other end of the other arm Ilb is fixed to the output shaft 18 of the drive motor 9. is rotatably supported by the connecting bracket 10. Note that 22 is a solenoid that locks and unlocks the door lock mechanism of the back door 6 using an electromagnet.

The opening/closing switch 12 is disposed near the steering handle 20 of the front seat 3a, and the courtesy lamp switch 13 is disposed at the lower part of the rear end opening 2b, so that when the back door 6 is opened, the curtain is closed. It lights up a lamp. Further, the opening/closing switch 12 can be switched to open, neutral, and closed positions, and the door opens in each of the open and closed positions.

Outputs a close signal and closes the courtesy lamp switch 1.
3 is configured to output an OFF signal when pushed in and an ON signal when pushed outward to the opening/closing control means 14, respectively.

The handbrake detection means 21a includes the front seat 3a.
A brake-on signal when the handbrake 21 installed in the vehicle is activated, that is, when the vehicle is parked.

The brake-off signal is output to the opening/closing control means 14 when the brake is released, that is, when the vehicle is in a driveable state.

The opening/closing control means 14 receives the brake on/off signal 1 from the handbrake detection means 21a and the door opening from the opening/closing switch 12.

When the close signal is input, the back door opening/closing signal is output to the drive device 8a according to a preset operating procedure. That is, when the brake on signal from the handbrake detection means 21a and the door open signal from the opening/closing switch 12 are input, a back door open signal is output to the drive device 8a, and a brake off signal from the detection means 21a is output. , open/close switch 12
The back door close signal is output to the drive device 8a when either of the door close signals from the front door and the courtesy lamp switch 13 is input.

Next, the effects of this embodiment will be explained.

First, an overview of the operation of this device 8 will be explained.

C.7 To open the door 6, switch the open/close switch 12 to the door open side with the handbrake 21 applied, the solenoid 22 will operate, the door lock mechanism will be unlocked, and then the drive motor 9 will be activated in the correct position. Turn around. Then, the connecting link 11 is extended to rotate the pack door upward, and when it is fully opened, the limit switch 17a is turned on, the rotation of the motor 9 is stopped, and the back door 6 is opened.

In addition, when closing the back door, the operator switches the open/close switch 12 to the door close side, presses and releases the courtesy lamp switch 13 for a predetermined period of time, or releases the hand brake 21. Then, by any of these operations, the drive motor 9 is reversed, and the connecting link 11 is
contracts and rotates the back door 6 downward, and when it is fully closed, the motor 9 stops and the back door 6 is in the closed state.

Next, the operation of the opening/closing control means 14 will be explained in detail along the flowchart of FIGS. 4A to 4FDL.

First, when opening the pack door automatically, the opening/closing switch 12 is switched to the door open side while the handbrake 21 is activated. Then, the control means 14 determines that the open/close switch 12 is open (S1), proceeds to FIG. After a second, the door lock solenoid is turned on and unlocked, and after another 0.5 second waiting time, the drive motor 9
(33-S7). Then, after one second has elapsed, the solenoid is turned off and the state of the open/close switch 12 is determined (38-5IO). If this is on, the motor rotation speed is measured, and if it is 1.5 PPM or more, it is assumed to be in a normal state, and the motor 9 is rotated until the limit switch 17a is turned on, and when the switch 17a is turned on, the motor 9 is stopped. The buzzer sound is changed to notify that the back door 6 has opened, and the buzzer is stopped after one second has elapsed (811 to 816).

Note that if the handbrake 21 is off in S2, the door opening operation is stopped, and the opening/closing switch 12 is turned off in SIO.
When is turned off (neutral state), the door opening operation is stopped, and the rotation speed of the drive motor 9 is set to 1.5P with the above Sll.
If the temperature drops below PM, it is determined that a foreign object is caught in the back door 6, and the motor 9 is stopped.

Next, when the pack door door is to be automatically closed, the opening/closing switch 12 is switched to the door closing side.

Then, it is determined that the door is closed (S17), and the
1, reverse the drive motor 9 with a buzzer sound,
After 1 second has passed, the state of the open/close switch 12 is determined (
818-521). When this is on the close side, the motor 9 continues to rotate, and the rotation speed of the motor 9 is 1. '5P
If the temperature drops below PM, it is determined that the back door 6 is closed, and the motor 9 is stopped, and the buzzer sound is changed to notify that the back door 6 is closed.When the courtesy lamp switch 13 is turned off, the buzzer is turned off. Stop (822
~828). Note that if the courtesy switch 13 is turned on (protruding outward) in S27, it is determined that a foreign object or the like is interfering with the back door 6, and the buzzer continues to sound.

If the opening/closing switch 12 is turned off while the drive motor 9 is rotating in S21, the process proceeds to S29, and if the courtesy lamp switch 13 is turned on (S29) and the handbrake is turned off (S30), the back door 6 is turned off. It is determined that the handbrake 21 is released while the door is half open, and the back door 6 is closed. Note that if the courtesy lamp switch 13 is off in S29 or the handbrake 21 is on in S30, the motor power is turned off and the door closing operation is stopped.

Also, the pack door opens and the courtesy lamp switch 1
3 is in the on state (protruding outward), if you want to use this courtesy lamp switch 13 to automatically close the pack door, press the courtesy lamp switch 13 for 1 second □ with the handbrake 21 activated. Keep pressing and then let go. Then 332. The process proceeds from S33 to steps 534 to 836 in FIG. 4(d), where the drive motor 9 is reversed two seconds after the start of the buzzer sound, and the number of rotations of the motor 9 is determined after one second has elapsed (837 to 541). If this is a normal value exceeding 1.5 RPM, the rotation will continue until the courtesy lamp switch 13 is turned off (542), and if the switch 13 is turned off and the motor rotation speed decreases to 1.5 PPM or less, the rotation speed will be reversed. It determines that the door 6 is closed, stops the motor, changes the buzzer sound to notify that the back door 6 is closed, and again judges the state of the courtesy lamp switch 13 after one second has elapsed. If this is off, the buzzer is stopped (844-48).

Then, in S32 above, if the handbrake 21 is on, the state of the courtesy lamp switch 13 is determined (S49), and if the courtesy lamp switch 13 is on, it is the same as when the opening/closing switch 12 is closed. The process then proceeds to 318, where the back door 6 is closed. Also, in S49 or S33, the courtesy lamp switch 1
3 is off, the closing operation is stopped.

As described above, according to the present embodiment, since the opening and closing of the back door 6 is automated, it is possible to easily open and close the back door 6 when loading and unloading baggage frequently, and it is possible to reduce the labor of people with weak physical and physical strength.

In the automatic opening/closing of the pack door, in this embodiment, a back door open signal is output to the drive motor 9 only when a brake on signal from the handbrake detection means 21a and a door open signal from the opening/closing switch 12 are input. In other words, the back door 6 is closed only when the vehicle is parked and the opening/closing switch 12 is set to the open side, thereby reliably preventing the back door 6 from being accidentally opened while the vehicle is driving. Also, when the brake off signal is input, the back door close signal is output, which means that when the handbrake 21 is released, the packed door arrow is closed, so starting with the packed door 7 open is not possible. This can be prevented and safety can be ensured.

Further, in this embodiment, when the back door 6 is open, the user can close the back door 6 while staying outside by pressing the courtesy lamp switch 13 for a certain period of time and then releasing the user's hand. In this case, since the curtain lamp switch 13 is used, an increase in the number of parts can be suppressed.

Furthermore, the automatic opening/closing device 8 of this embodiment connects the drive motor 9 fixed to the pack door arrow and the vehicle body 2 with a V-shaped connection link 11, and turns on the V-shaped connection link 11.

Since this can be achieved by simply providing the open/close switch 12 to turn off and the open/close control means 14, it does not require much installation space and can reduce costs compared to, for example, a case where a hydraulic drive device is employed.

〔Effect of the invention〕

As described above, according to the automatic opening/closing device for a back door for a vehicle according to the present invention, the back door is opened only when the handbrake is activated and the opening/closing switch is set to the open side. Since the door can be reliably prevented from opening and the back door is closed immediately when the handbrake is released, it can reliably prevent the back door from starting with the back door open. This has the effect of ensuring safety.

[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, FIG. 3 is a side view showing the drive device, and FIGS. 4 ta+ to 4 [d
1 is a flowchart diagram for explaining the operation of the opening/closing control means. In the figure, 1 is a one-box automobile (vehicle), 2b
is an opening, 6 is a back door, 8 is an automatic opening/closing device, 8a is a drive device, 12 is an opening/closing switch, 13 is a courtesy lamp switch, 14 is an opening/closing control means, 21 is a handbrake, and 21a is a handbrake detection means. .

Claims (2)

[Claims] (1) An automatic back door opening/closing device that is equipped with a drive device that opens and closes the back door disposed at the rear end opening of the vehicle, and an opening/closing switch that turns the device on and off, and when the handbrake is activated. handbrake detection means for outputting a brake-on signal; and opening/closing control means for outputting a back door opening signal to the drive device when a brake-on signal from the detection means and a switch opening signal from the opening/closing switch are input. An automatic opening/closing device for a back door for a vehicle, characterized by the following: (2) an automatic back door opening/closing device comprising a drive device for opening/closing the back door disposed at the rear end opening of the vehicle, the handbrake detection means outputting a brake off signal when the handbrake is released; An automatic opening/closing device for a back door for a vehicle, comprising opening/closing control means for outputting a back door close signal to the drive device when a brake off signal from the detection means is input.