JPS6141633A - Motion control device of crew sheet in vehicle - Google Patents

Abstract

PURPOSE:To improve safety in getting on and off by stopping or returning driving of a sheet to an original position when approach to an object is detected by providing an approach detecting circuit. CONSTITUTION:The device consists of an ignition switch 22, a key sensor 24, a motor 51 for driving a sheet 5, limit switches 501, 502, etc. and is controlled by a controller 4. The controller 4 is connected by a rear monitoring device 28 which is an approach detecting circuit and the device 28 detects approach of an object from rear direction of the getting-on side such as approach of a vehicle, and when any approaching object is found, motion of the sheet such as rotation in getting on and off is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a motion control device for a passenger seat in a vehicle. The device according to the invention relates, for example, to a seat for a passenger in a motor vehicle, and in particular to a safety device Q for rotating the seat in order to facilitate entry and exit from the motor vehicle.

Problems to be Solved by the Invention Conventionally, devices have been proposed in which a seat is rotated toward the passenger side as a device for making it easier for a passenger to get into and out of a vehicle.

This is a door switch, key switch, key discrimination sensor,
The system determines the occupant's intention to get on and off from the seat, etc., and based on the judgment result, slides the seat rearward and then rotates it toward the passenger side. This device has a problem in that the door cannot be closed when the seat is rotated toward the passenger side, and there is a safety concern when getting on and off the vehicle while the seat is rotated on a public road, for example.

The present invention has been made in order to solve the above-mentioned problems, and is an approach detection device such as a rear monitoring device. This is based on the concept of stopping driving such as rotation of the seat when getting on and off, and aims to improve safety when getting on and off while rotating the seat.

Means for Solving the Problems The present invention provides an approach detection device for detecting the approach of an object to a vehicle; a vehicle ignition switch state detection element, a vehicle door state detection element, a vehicle door key insertion detection element, and a passenger seat. A vehicle operating state detection device consisting of longitudinal movement and rotational movement device detection elements, etc.; an occupant seat longitudinal movement and rotational movement drive device; and a vehicle operation state detection device that detects longitudinal movement and rotational movement of the passenger seat; a control circuit that generates a control drive signal to the dynamic and rotary drive device;
In a vehicle, the control circuit generates a control drive signal 48 to stop driving the passenger seat or return it to its original state when the approach detection device detects the approach of an object. A motion control device for a passenger is provided.

Embodiment FIG. 1 shows an outline of the configuration of a motion control device for a passenger seat in a vehicle as an embodiment of the present invention. In the device shown in Fig. 1, 1 hails a car. 11 is the vehicle battery, 22 is the ignition switch, 31 is the key A132
is the key B133, the key C124 is the key sensor, 25 is the key cylinder of the driver's side door, 26 is the door switch, 27
are a group of mercury operated switches for positioning.

Further, in the apparatus shown in FIG. 1, 5 is a passenger seat, 51 is a driving motor thereof, 61 is a room mirror, 62 is a left fender mirror, 63 is a right 7 ender mirror, and human CT is an actuate group. Further, in the apparatus shown in FIG. 1, 4 is a controller. In the controller 4, 41 is a calculation circuit, 42 is a two-way switching relay, 43 is a relay control unit,
48 is a relay drive transistor, 44 is a group of motor switching relays, 45 is a read-only memory (ROM) storing a groderm, and 46 is a storage section.

In the device shown in Figure 1, 5 covers the driver's seat. 5
01 is a limit switch that detects the front of the seat, 502
is a limit switch that detects full clockwise rotation of the seat, 5C
is the center of rotation. 503 is the switch 501 and 50
It is fixed to the seat 5 with an actuating plate that operates 2. 5
Reference numeral 04 is a switch that detects when the user is seated, and turns on the bottom of the cushion 507 when the user is seated.

A limit switch 505 detects the rearmost position when the seat is moved back and forth, and is fixed to the pace 508. In FIG. 1, the arrow MOV indicates the longitudinal movement of the seat, the arrow ROT indicates the rotational movement of the seat, and the pace 508 is fixed to the vehicle body. Reference numeral 506 denotes an actuating plate for actuating the switch 505, which is fixed to the seat 5. Seat 5 is Pace 5
It is possible to slide back and forth (arrow MOV) and rotate (arrow ROT) relative to 08. 28 is a rear monitoring device.

The connection relationship of the controller in the device shown in FIG. 1 is shown in FIG. 2, and the configuration of the controller is shown in FIG. 3. The controller 4 is supplied with a power source B (DIR) directly from the on-vehicle battery and a power source B (IGS) after passing through an ignition switch. The key is used as a means to identify the user from the viewpoint of storing the seat slide position and the like for each user and automatically moving the seat when riding the vehicle. 31, 32, and 33 are keys with holes drilled in them, and the positions and numbers of the holes are changed. There is also a hole in the key cylinder so that when the key is inserted into the key cylinder 25 of the driver's side door and the key is turned in the unlocking direction, the axes align.

The key sensor 24 has a configuration in which two pairs of light emitting diodes and a phototransistor are arranged on the optical axis between the key hole and the key cylinder hole. 26 is a door switch whose contacts close when the door is opened.

5 is the seat, which slides back and forth, moves the front edge of the seat up and down,
The five modes of vertical movement of the rear end of the seat, reclining back and forth movement, and left and right rotation in a horizontal plane are each operated by a motor 51 serving as a seat driving device. 61 is a room mirror, 62 is a left 7-ender mirror, and 63 is a right fender mirror. Each mirror is operated by a motor in two modes: horizontal movement and vertical movement of the mirror surface. Reference numerals 611, 621, and 631 are a rearview mirror detection drive section, a left fender mirror detection drive section, and a right fender mirror detection drive section, respectively. Reference numeral 27 denotes a group of manual operation switches for the vehicle user to adjust the seat and each mirror to the optimal position for the vehicle user.

28 is a rear monitoring device. As the rear monitoring device, for example, a radio wave type device having the same operating principle as that of JP-A-54-29446 ``Automobile Door Lock Control Method and Apparatus'' can be used. It operates according to a command from the controller 4, determines whether there is a vehicle approaching from behind, and sends the result to the controller 4.

The configuration of the controller 4 is shown in FIG.

41 is a calculation circuit. As the calculation circuit, a microcomputer type circuit can be used.

Calculation circuit 41 operates according to a program stored in read-only memory (ROM) 45. The relay control unit 43 includes a door switch 26, a key sensor 24, and a B (IC).
The power relay 42 is controlled by each signal of the power supply.

Relay control during riding will be explained with reference to the waveform diagram in FIG. 4. When you insert the key into the door key cylinder and turn it to the unlock side to get into the car, the key sensor detects the key hole and generates a signal. At the rising edge of this key sensor signal, 4
Set the riding flag in 3. Next time you open the door,
The door switch is turned on, and the drive signal of the transistor 48 is set by the rising edge of the door switch signal and the AND of the boarding flag. Transistor 48 is turned on, relay 42 is turned on, and switching contact 420 is connected to terminal 42b. Power is supplied to the calculation circuit 41, and the calculation circuit 41 is connected to the circuit 70- in FIG.
Works as shown in the chart. Step 5102
7 lags in the relay control unit 43 are read at step 510.
3, the calculation circuit 41 controls the operation during riding, including the rear monitoring of steps 8104 and below.

After automatic movement to the memory position, the boarding flag in the relay control unit 43 is reset in step 5113, and the transistor 4
8 drive signal is reset. The transistor 48 is turned off, the relay 42 is turned off, and the switching contact 42C is connected to the terminal 42&
Connect with. At this time, if the ignition switch 22 is closed, the calculation circuit 41 continues to operate, but if it is open, the operation is stopped.

Relay control when getting off the vehicle will be explained with reference to the time chart of FIG. When the ignition switch 22 is opened to exit the vehicle, the ignition signal falls. This fall,
The exit flag in the relay control section 43 is set. Next, when the door is opened, the door switch is turned on, and the transistor 48
Set the drive signal. Transistor 48 is turned on, relay 42 is turned on, and switching contact 42C is connected to terminal 42b. Power is supplied to the calculation circuit 41, and the calculation circuit 41
operates according to the flowchart shown in FIG.

In step 5102, 7 lags in the relay control unit 43 are read, and in step 5115, it is determined that the driver has exited the vehicle, and Stella f8116
A calculation circuit 41 controls the following operations at the time of getting off the vehicle, including rearward monitoring. When the above steps are completed, in step 5124, the exit flag in the relay control section 43 is reset and the drive signal is reset. Transistor 48 is turned off, relay 42 is turned off, and switching contact 42C is connected to terminal 42L. At this time, since the ignition switch 22 is open, the calculation circuit 41 stops operating.

The overall operation of each component explained above will be explained along chart 70 in FIG. 6.

When power is supplied to the calculation circuit 41, first step 5IO is performed.
Initialize with I. Power is supplied to the calculation circuit 41 when the relay 42 is turned on when the door is unlocked and opened when getting into the car, when the relay 42 is turned on when the ignition is turned off and the door is opened when getting off the car, and when the relay 42 is turned on when the door is opened after the ignition is turned off when getting off the car. Since there are three energizations when the switch 22 is closed, the flag is read in step 8102 to determine which one activates the calculation circuit 41, that is, what the calculation circuit should control.

If it is determined in step 5103 that the boarding flag is set, control at the time of boarding is then performed. first,
In order to facilitate boarding, step 5104 controls the relay group 44 to energize the seat slide motor to move the seat rearward. The motor rotates and the seat moves backwards. In the apparatus shown in FIG. 1, a limit switch 505 for detecting the rearmost position of the seat slide is attached to a pace 508 fixed to the vehicle body. In step 5104, the state of this limit switch 505 is monitored), and when it is detected that the actuating plate 506 presses 505 and the switch is closed, the group of relays 44 is controlled to stop energizing the slide motor.

Next, the seat would normally be rotated to the right to make it even easier to get into the vehicle, but in order to prevent danger from overtaking vehicles from behind on the right side, in step 510
Step 5 activates the rear monitoring device 28, and step 8106 determines whether there is a vehicle approaching from behind. If there is a vehicle approaching from the rear, step 5107 is executed, the seat remains at the rearmost position and waits for the occupant to sit down, and once the occupant is seated, step 8111 and subsequent steps are executed. If there is no vehicle approaching from behind, step 8108 and subsequent steps are executed to rotate the seat to the right to facilitate boarding. In step 3108, the seat rotation motor rotates the seat toward the door (
Right side) A group of relays 44 is controlled to be energized for K rotation. The motor rotates and the seat rotates to the right.

In the apparatus shown in FIG. 1, a limit switch 502 is installed to detect full right rotation of the seat.

The Stella FS 108 monitors the state of the limit switch 502, and when it detects that the operating plate 503 presses the switch 502 and closes the switch, it controls the relay group 44 to stop energizing the rotation motor.

In the apparatus shown in FIG. 1, a seat switch 504 is installed to detect whether a person is sitting on the seat.

The state of the seating switch 504 is monitored in step 5109), and when the actuating plate 511 detects that 504 is pressed and the switch is closed, the process moves to the next step. Step 51
At step 10, the relay group 44 is controlled to energize the seat rotation motor so as to rotate the seat to the left. The motor rotates and the seat rotates to the left.

In the apparatus shown in FIG. 1, a limit switch 501 that detects whether the seat is facing forward is installed. In step 5110, the state of this limit switch 501 is monitored and the operating plate 503 is connected to the limit switch 501.
When it is detected that the switch is closed by pressing 1, the relay group 44 is controlled to stop the energization of the rotation motor. The above is a series of controls for making riding easier.

From the next step, control is performed to automatically move to the stored position. In FIG. 3, 47 is a key signal holding section that holds the key sensor 24 (lt-set) when the 1'70 key is released.

The signal is held until the door is unlocked using a key with a different ta. The Stella fS 111 reads this key signal from the hold section 47. In step 5112, the storage position to which each actuator should be moved is read from the storage section corresponding to the key controller, compared with the current position of each actuator, and the direction of energization of the motor is determined to control the group of relays 44. . When the stored position and the current position become the same, the group of relays 44 is controlled to stop energizing the corresponding motor.

When the automatic movement to the memory position is completed for all motors, the boarding flag in the relay control unit 43 is reset in step 5113, and then the relay 42 is turned off in Stella 7''S 114. By turning off the relay 42, The power to the calculation circuit 41 is cut off and the calculation circuit 41 stops operating.The above is a series of controls during riding.

Next, control when getting off the vehicle will be explained. If it is determined in step 5115 that the exit flag is set, control for exiting the vehicle is performed below. First, in step 5116, the current position of each actuator is stored in the storage unit corresponding to the type of key used.

Next, control is performed to make it easier to get off the vehicle.

This is almost the same control as the control that makes it easier to get on the vehicle. Stella: In 7'5117, the seat is moved backward until the limit switch 505 at the rear end is turned on.

Next, the seat would normally be rotated to the right to make it even easier to get out of the vehicle, but in order to prevent danger from overtaking vehicles on the right from behind, the rear monitoring device 28 is activated in step 8118.

In step 5119, it is determined whether there is a vehicle approaching from behind.

If there is a vehicle approaching from the rear, step 5120 is executed, the seat remains in the rearmost position and waits for the occupant to leave the seat,
When the occupant leaves the seat, steps 5124 and subsequent steps are executed. If there is no vehicle approaching from behind, steps 5121 and subsequent steps are executed to rotate the seat to the right to make it easier to get off the vehicle. In step 5121, a group of relays 44 is set to energize the seat rotation motor so that the seat rotates toward the door (right side).
The seat is rotated clockwise until the right full limit switch 502 is turned on.

In step 5122, the state of the seat switch 504 is also monitored, and when it is detected that the switch 504 is turned off, the process moves to the next step. In Stella 7'S 123, the seat is rotated counterclockwise until the limit switch 501 on the front is turned on. When the seat returns to its original front position, press ST, f.
At s124, the exit flag in the relay control section 43 is reset, and then at Stella fs125, the relay 42 is turned off. When the relay 42 is turned off, the power to the calculation circuit 41 is cut off, and the calculation circuit 41 stops operating.

The above is a series of controls when getting off the vehicle.

Next, we will explain how to adjust to your optimum position using the manual operation switch. Mani, Al's manipulation is serious! This is possible only when / switch 22 is closed. When it is detected in step 8126 that the switch 22 is closed, the signal of the manual operation switch group 27 is read in the Stella 7'S 127. Stella 7'8128
When it is detected that one of the switch groups 27 is turned on, the motor corresponding to the switch operation and its energization direction are determined, and in step 5129, the relay group 44 is controlled to energize the motor.

In step 5130, the signals of the switch group 27 are read again, and in step 5131 it is determined whether they are the same as the switches and the signals read in step 5127. As long as the same switch is operated υ, steps 5130 and 5131 are repeated, so the corresponding motor continues to rotate.

When the switch is turned off, the process moves to step 5132, where the group of relays 44 is controlled to turn off the corresponding Tanabata festival.

Then, the process returns to step 5102 and waits for a new manual operation switch to be operated. When none of the switch group 27 is operated, steps 5102 and 510
3,5115,5126,5127.5128. Then, in the order of 5102, the calculation circuit 41 waits for switch input.

In implementing the present invention, various modifications other than the above-described embodiments are possible. For example, in the embodiment described above, only before the seat rotates toward the door, the rear monitoring device detects an approaching vehicle from behind and prohibits the seat from rotating. Instead, in order to further improve safety, whenever the seat is rotated from its normal front position to the door side, the rear monitoring device is activated to monitor approaching vehicles from the rear. In some cases, the seat may be controlled to immediately stop rotating and return to the front position.

In this case, as a specific operation, the rear monitoring device activated in steps 8105 and 8118 in the flowchart of FIG. 6 is continued to operate until the seat returns to the normal front position at Stella 7'5110°5123. and steps 8108, 8109, and step 512
1. At 8122, the system always checks the detection signal of an approaching vehicle (behind the rear monitoring device), and if an approaching vehicle is detected, immediately executes steps 8110 and 5123 to rotate the seat to the left and bring the seat to the front position. Bring it back. This and the above-described embodiments can also further improve safety.

Furthermore, in order to further improve safety, it is possible to immediately turn the seat to the left and return it to the front position as soon as the occupant leaves the seat when turning to the right when getting out of the vehicle. Specifically, when the seat is rotated clockwise in step 5121 of the 70-chart in FIG. If the seating switch 504 detects that the occupant leaves the seat before the switch 502 is turned on, Stella 7'8123 is executed to rotate the seat to the left and return it to the front position. This can improve safety and shorten the operating period when a passenger exits the vehicle.

In addition, in the above-mentioned embodiment, the seat K slides backward and rotates toward the door as the movement of the seat to facilitate getting on and off. The same applies to

Effects of the Invention According to the present invention, when the seat is rotated toward the door, an approach detection device such as a rear monitoring device determines whether or not an object such as a vehicle approaches from the rear. After this is confirmed, for example, the 7-toe can be rotated toward the door, thereby improving safety when getting on and off the vehicle.

[Brief explanation of drawings]

1 is a diagram showing an overview of the configuration of a motion control device for a passenger seat in a vehicle as an embodiment of the present invention; FIG. 2 is a diagram showing the connection relationship of the controller in the device shown in FIG. 4; is a diagram showing the configuration of controller 2 in the device shown in FIG. 1, FIGS. 4 and 5 are diagrams showing signal waveforms in relay control, and FIG. 6 is a diagram showing the flow of operation of the calculation circuit in the device shown in FIG. 1. This is a flowchart. (Explanation of symbols) 1...Automobile, 11...In-vehicle battery, 22...
Ignition switch, 24...Key sensor, 26...
...Door switch, 27...Manual operation switch group, 28...Rear monitoring device, 31, 32, 33...
Key, 4... Controller, 41... Calculation times L42
...Archive relay, 43...Relay control section, 44.
...Relay group, 45...Read-on memory, 46...
- Storage section, 47...Key signal hold section, 48...
Transistor, 51...Drive motor, 61...Roommi 7-162...Left fender mirror, 63...
Right fender mirror, ACT... Actiata group.

Claims (1)

[Claims] 1. Approach detection device for detecting the approach of an object to a vehicle; vehicle ignition switch state detection element, vehicle door state detection element, vehicle door key insertion detection element, passenger seat forward and backward movement, rotational movement A vehicle operation state detection device consisting of a device detection element, etc.; a device for driving the passenger seat for longitudinal movement and rotation; and a device for driving the passenger seat for longitudinal movement and rotation in response to signals from the approach detection device and the vehicle operation state detection device. A control circuit that generates a control drive signal to the drive device, and the control circuit controls the passenger seat to stop driving or return to its original state when the approach detection device detects the approach of an object. A motion control device for a passenger seat in a vehicle, characterized in that it generates a drive signal. 2. The device according to claim 1, wherein the driving of the passenger seat includes rotational driving of the seat toward the entrance/exit door. 3. The device according to claim 1, wherein the approach detection device is a rear monitoring approach detection device that detects the approach of an object from the rear of the vehicle.