JPH0412819Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a power seat for automobiles that automatically returns the seat from any driving position to the owner's pre-memorized driving position by operating a switch. This is related to the improvement of

(Prior art) In recent years, the position and height of the driver's seat in automobiles, the position of each part of the seat, such as the backward tilt angle of the seat back, etc., can be automatically adjusted to the optimal position stored in advance according to the driver through predetermined operations. Power seats have been developed that can be set up in a variety of ways, and are currently being installed in automobiles.

In this type of power seat, when a driver other than the owner drives the vehicle and the owner returns to the vehicle, getting into the vehicle may be troublesome because the seat position is in the driving position of the other person. Therefore, when a driver other than the owner gets out of the car, it is possible to have the seat automatically return to the owner's driving position by operating a switch or automatically. While it has the disadvantage of being forgotten, the latter has the disadvantage of having to operate the switch again to adjust the driving position when a driver other than the owner continues to ride the vehicle.

(Purpose of the invention) This invention maintains the driving position at the time the driver got off the car when the driver continues to get in the car after getting off the car, but when the driver does not get in the car, the seat automatically returns to the pre-memorized driving position of the owner. The purpose is to provide a power seat that

(Structure of the invention) Therefore, the present invention was developed by focusing on the fact that the driver who gets out of the car usually continues to get into the car for a short time after getting off the car. and means for detecting the open/closed state of the door, and the operation is started by ANDing the off signal of the ignition switch and the door close signal, and the operation is started by the on signal of the ignition switch or the door open signal. A power seat for an automobile is characterized in that it is provided with a timer output for outputting an owner driving position return command signal to a computer after a predetermined period of time has elapsed after the start of operation.

Incidentally, the function of the above-mentioned timer means may be provided in the computer that controls the power shoot.

(Effects of the invention) According to the invention, if a driver other than the owner sets a driving position suitable for him/herself and then gets out of the car, the seat will move to that driving position within a predetermined time. When the driver continues to drive, the driver can maintain the same driving position as when he or she got out of the car, eliminating the hassle of operating switches after sitting in the seat and the sense of danger caused by moving the seat. This allows you to comfortably move on to driving. On the other hand, the seat automatically moves to the owner's memorized driving position after a predetermined period of time after the driver gets out of the car, so even if the driver in front is not the owner, the seat respects the owner-driver and the owner-driver era. It is possible to provide a power seat for an automobile that meets the following requirements.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1 and FIG. 2, the microcomputer 11 has a function as a control unit for the power seat 12, and is a CPU (central processing unit).
It consists of ROM, RAM, etc. This microcomputer 11 has an input device 13.

As shown in FIG.
It has a manual operation switch 16 for manually operating the front and rear swing angles shown by . This manual operation switch 16 is attached to the side surface of the seat 14 of the power seat 12 and outputs a manual operation signal to the microcomputer 11.

The input device 13 also includes a memory switch 17.
It has an auto switch 22 consisting of a stop switch 18 and selection switches 19, 20 and 21. The memory switch 17 is
A command is given to store the positions of the seat 14 and seat back 15 of the power seat 12 which have been manually set by the manual operation switch 16. Further, the stop switch 18 stops the operation of the power seat 12. In addition, owner selection switch 1
9. The selection switches 20 and 21 are used to instruct storage and reproduction of the positions of the seat 14 and seat back 15 of the power seat 12, respectively, for a total of three drivers including the owner of the vehicle. . The auto switch 22 has a memory switch 17 and a stop switch 1.
8. Owner selection switch 19, selection switch 20
and 21 output auto switch signals corresponding to the above functions to the microcomputer 11, respectively.

The auto switch 22 is placed near the power seat 12 and is operated by the driver. On the other hand, the microcomputer 11 outputs motor drive signals to driver circuits 26 and 29, as shown in FIG. The driver circuit 26 drives the motor 27 according to the motor drive signal,
Slide the seat 14 of the power seat 12 forward and backward. Further, the other driver circuit 29 drives the motor 30 in response to the motor drive signal to swing the seat back 15 of the power seat 12 forward and backward.

The rotation speeds of the motors 27 and 30 are detected by sensor circuits 28 and 31, respectively. These sensor circuits 28 and 31 are both composed of reed switches and the like, and are connected to the motors 27 and 30.
A sensor signal having a number of pulses proportional to the number of rotations of each is outputted to the microcomputer 11.

The microcomputer 11 counts sensor signals from the sensor circuits 28 and 31, and calculates the positions of the seat 14 and seat back 15 of the power seat 12 from the counted values.

In the above configuration, the seat can be automatically moved to a predetermined seat position stored in advance by selecting the auto switch 22. However, in the present invention, as shown in FIG. Means 41 for detecting the state
and means 42 for detecting the open/closed state of the door, and the operation is started by AND of the ignition switch off signal and the door close signal, and the operation is started by the on signal of the ignition switch or the door open signal. The control means 40 includes a timer means for outputting an owner driving position return command signal to the computer 11 after a predetermined period of time has elapsed after the start of operation.

The control means 40, as shown in FIG. The timer means 43 starts operation by ANDing the ignition switch off signal and the door close signal, and after a predetermined time has elapsed, the microcomputer 11 receives an owner driving signal. A position return command signal is output.

Therefore, as shown in the power seat operation program in Fig. 4, after the start 100, the initial setting 1
01, when the memory switch 17 is operated with the ignition switch in the on state 105, the set driving position is stored in the microcomputer 11 102, while when the manual switch is operated, the manual operation 103 is set to a predetermined seat position. When the memory switch 17 is operated, the newly set driving position is transferred to the microcomputer 11.
is memorized. Such pre-stored driving positions are reproduced 104 by operating the select switches 19 to 21, and the seat is automatically moved to a predetermined driving position. However, in the present invention, when the ignition switch is turned off,
When the door is opened 106, this action is detected by the detection means 41 and 42.

Next, when the driver gets out of the car and closes the door 107, the timer means 43 starts to measure time. Next, when the driver opens the door to get into the vehicle, this door open signal causes the timer means 43 to stop timing, but if the driving position at that time is different from the owner's driving position 108, the timer means 43 is started. If the time until the driver stops, that is, the time from when the driver once gets off the vehicle until he gets on the vehicle again, is shorter than the time preset in the timer means 43 (109), the driving position is not changed. On the other hand, if the above-mentioned time exceeds the time preset in the timer means 43, the timer means 43 outputs an owner position return signal to the microcomputer 11, and the microcomputer 11 receives this signal and removes the seat. In order to set the driving position specified by the owner, the driver circuit 2 of the motors 27 and 30
6 and 29 to automatically return the seat to the owner's driving position 110.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the control circuit of the power seat according to the present invention, Fig. 2 is a schematic configuration diagram of the power seat of Fig. 1, Fig. 3 is a signal diagram of the control means according to the present invention, and Fig. 4 is a block diagram of the control circuit of the power seat according to the present invention. FIG. 3 is an explanatory diagram of the operation of the power seat according to the present invention. 11...Microcomputer, 12...Power seat, 13...Input device, 14...Seat,
19... Owner selection switch, 20, 21...
Selection switch, 40...control means.

Claims (1)

[Scope of Claim for Utility Model Registration] While the seat can be set to any driving position by manual operation, the owner's driving position can be stored in a computer in advance, and the seat can be set to any driving position other than the owner's driving position. Detects the on/off state of an ignition switch in an automobile power seat that automatically returns the seat to the pre-stored owner's driving position via a computer when the switch is operated. means, and means for detecting the open/closed state of the door;
Starts operation by ANDing the off signal of the ignition switch and the door close signal,
A timer means is provided which stops the operation in response to the on signal of the ignition switch or the door open signal, and outputs an owner driving position return command signal to the computer after a predetermined period of time has elapsed after the driver has exited the vehicle. While maintaining the driving position at the time of exiting the vehicle within a predetermined period of time, the seat is automatically moved to the owner's driving position after a predetermined period of time after the driver exits the vehicle based on an owner driving position return command signal output from the timer means. A power seat for an automobile, characterized in that it is configured to