JPH06135270A - Seat device for automobile - Google Patents

Abstract

PURPOSE:To reduce the burden upon a passenger who particularly sits on or leaves off a rear seat. CONSTITUTION:When a control means 16 detects a turn-on of an outer handle switch 13 or an inner handle switch 14, that is an opening operation of a rear door, and detects a turn-on of a body pressure sensor 9, that is, seating of a passenger, an actuator is driven in a positive direction so as to turn a seat back to a predetermined position where the seat back the seat back is rotated by a predetermined angle theta (for example, 25deg.), and then the actuator is stopped after it is confirmed that the seat back is turned to the predetermined position. When a door switch 7 is turned on, that is, the closing of the rears door is confirmed, the actuator is reversed so as to return the seat back from the predetermined position to an initial position (seating position), and then the actuator is stopped after it is confirmed that the seat back is located at the initial position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device that facilitates an occupant's movement in and out of an automobile.

[0002]

2. Description of the Related Art Conventionally, in a small vehicle such as an automobile, particularly a light automobile, the leg room in front of the seat is not always sufficient because the margin of the vehicle interior space is limited by the body size such as length, width and vehicle height. However, there is a problem that it is inconvenient for the passenger to get in and out of the car. In order to solve this problem, for example, the one disclosed in Japanese Patent Laid-Open No. 2-70543 has slide doors for getting in and out of the vehicle body so that the driver's seat can be rotated and the slide door on the driver side is opened. The driver's seat can be rotated in conjunction with the operation or manually to face the door opening to facilitate the entry and exit of the driver, while the passenger seat can be slid forward and backward to facilitate the entry and exit of passengers in the rear seat. ing.

[0003]

However, in the above-mentioned conventional seat structure, only the driver inside the occupant can easily get on and off, and the occupants of other seats, especially the occupant of the rear seat, have a low waist position, There is a problem that a large amount of labor is required to stand up from a sitting posture in which the upper body is tilted backward.

It is an object of the present invention to provide a seat device for an automobile, which reduces the burden on the passengers, especially the passengers in the rear seats, when getting on and off the vehicle.

[0005]

In order to achieve the above object, a vehicle seat device of the present invention includes a seat back rotatably supported about a lower rotation shaft, and the seat back. A vehicle seat device including an actuator, including a detection unit that detects a door opening operation,
A control means for driving and controlling the actuator according to a door opening operation detection signal from the detecting means, and when the detecting means detects the door opening operation, the seat back is rotated from a seated position (initial position) to a predetermined upper position. When the door is opened at the time of getting on and off, the door opening operation is detected and the seat back rises, so that the getting on and off operation becomes easy. Especially when applied to the rear seat, it is highly effective.If the seat device is provided with means for detecting whether or not the occupant is seated, and if the actuator is activated only when the seating of the occupant is detected, it is possible to drive the actuator when unnecessary. There is no. Furthermore, if it is detected that the door is in the closed position,
The control means actuates the actuator to return the seat back to the normal seating position (initial position), whereby the boarding operation becomes smooth.

[0006]

2 is a front door, 3 is a rear door, 4 is a rear seat, 5 is a front seat, and 6 is an outer door handle of a rear door 3. , 7 are door switches that are turned on and off by opening and closing the rear door 3.

In FIG. 3, an inner handle 8 is provided on the interior side of the rear door 3, and body pressure sensors 9 are installed on the seat cushion 41 and the seat back 42 of the rear seat 4, respectively, as shown in FIG. In addition, the seat cushion 41 of the rear seat 4 is installed on the rear floor panel 12, and the seat back 42 is installed along the bulkhead 11 that extends obliquely from the rear floor panel 12 to the package trim 10, and at the initial position along the bulkhead 11. A certain angle θ (for example, 25
°) It is formed so as to be rotatable at a predetermined position (dotted line position) 41A which is rotated.

In FIG. 5, the outer handle 6 is rotatably provided in a recess 32 formed in the door outer panel 31 of the rear door 3, and a lever 61 protruding from the rear surface of the outer handle 6 is installed in the recess 32. A switch (outer handle switch which is a door opening / closing detecting means) 13 is turned on / off. For example, in a normal state (solid line position) where the outer handle 6 is not touched, the lever 61 pushes the outer handle switch 13. It is on, and in the door opening operation state (dotted line position) where the outer handle 6 is pulled outward, the door 3 is opened, and the lever 61 releases the pressing of the outer handle switch 13 to turn it off.

In FIG. 6, the inner handle 8 installed in the recess 34 formed in the door inner panel 33 of the rear door 3 has one end rotatably supported by a pin 80, and a protrusion 81 on the back surface near the pin 80. Is provided, and the protrusion 81 presses a contact switch (inner handle switch that is a door opening / closing detection means) 14 installed in the recess 34 to turn it on and off. The protrusion 81 presses the inner handle switch 14 to turn it on in a normal state (solid line position) where it is not hung, and opens the door 3 in a door opening operation state (dotted line position) 8A in which the inner handle 8 is pulled toward the passenger compartment. While operating, the projection 81 releases the pressing force of the inner handle switch 14 to turn it off.

In FIG. 7, the seatback 42 of the rear seat 4 has a support plate 421 extending upward,
A lower end of the support plate 421 is rotatably supported around a rotation shaft 43, and a drive mechanism 15 connected to the support plate 421 and a support frame 411 arranged in the seat cushion 41 is installed. As shown in FIG. 8, the drive mechanism 15 includes a cushion plate 16, a back plate 17, and an actuator 18 such as a motor attached to the back plate 17.
And a drive gear driven by the actuator 18.
The cushion plate 16 supports the seat cushion 41, including a driven gear 20 connected to an end of the rotary shaft 43 and driven by the drive gear 19, and a fixed gear 21 held by a bracket 22 and meshing with the driven gear 20. In the frame 411, the back plate 17 is fixed to the support plate 421 of the seat back 42 with the bolts 23, respectively, and when the door opening / closing operation is detected by the ON / OFF signals of the outer handle switch 13 and the inner handle switch 14, the actuator is activated. 18 operates to rotate the seat back 41 around the rotation shaft 43 via the drive gear 19 and the driven gear 20.

In FIG. 1, a door opening operation signal detected by an outer handle switch 13 and an inner handle switch 14, which are means for detecting a door opening / closing operation, a door closing signal detected by a door switch 7, and a body pressure sensor 9 The presence / absence signal of the occupant seated at, and the position signal from the position detection switch that detects the position of the seat back 42 based on the drive amount of the actuator 18 are input to the control means 16 such as a computer, and the drive mechanism 15 A drive signal for controlling the operation is output to the drive mechanism 15.

The control operation will be described with reference to the flowchart of FIG. 9. When the control means 16 detects that the outer handle switch 13 or the inner handle switch 14 is off, that is, the opening operation of the rear door 3, the body pressure sensor 9 is turned on. Is detected, that is, when the occupant's seat is detected, the actuator
18 is driven in the forward direction to rotate the seat back 41 from the initial position (seating position) upward to a predetermined position that is rotated a predetermined angle θ (25 °), and confirm that the seat back 41 has rotated to the predetermined position. Confirm and stop the actuator 18. The opening operation of the rear door 3 may be detected by turning off the door switch 7 (when the rear door 3 is opened).

When the door switch 7 is turned on, that is, when the closed state of the rear door 3 is confirmed, the actuator 18 is driven in the opposite direction to rotate the seat back 41 from the predetermined position to the initial position (seat position) to return it. After confirming that the seat back 41 is in the initial position, the actuator 18 is stopped.

Although only the method of rotating the seat back from the initial position to the predetermined upper position has been described,
When the rear end of the seat cushion is pushed up, the seat back also moves from the initial position to the upper position, which facilitates getting on and off.

[0015]

Since the present invention is constructed as described above, it has the following effects. At least the seat back is rotated upward with the opening operation of the door, and when the seat is seated, the seat back is returned to the initial position (seat position), so that the occupant, especially the occupant in the rear part, can easily get on and off.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control system of the present invention.

FIG. 2 is an external perspective view of an automobile to which the present invention is applied.

FIG. 3 is an interior perspective view of an automobile to which the present invention is applied.

FIG. 4 is a side view of a rear seat to which the present invention is applied.

FIG. 5 is a sectional view of an outer handle portion.

FIG. 6 is a sectional view of an inner handle portion.

FIG. 7 is a structural diagram of a rear seat to which the present invention is applied.

FIG. 8 is an enlarged view of a drive mechanism.

FIG. 9 is a flowchart of the control operation of the present invention.

[Explanation of symbols]

3 rear doors, 4 rear seats, 6 outer handles,
7 Door Switch 8 Inner Handle, 9 Body Pressure Sensor, 10 Package Trim 11 Bulkhead, 12 Rear Floor Panel, 13 Outer Handle Switch 14 Inner Handle Switch, 15 Drive Mechanism

Claims (4)

[Claims] 1. A seat back rotatably supported,
A seat device including an actuator for rotating the seat back, comprising: detection means for detecting an opening operation of a door; and control means for driving and controlling the actuator according to a door opening operation detection signal from the detection means. A seat device for an automobile, comprising: the seat back being rotated from a seated position (initial position) to a predetermined upper position when the detection means detects a door opening operation. 2. The seat device for an automobile according to claim 1, wherein the seat device is a rear seat. 3. The seat device for an automobile according to claim 1, wherein the seat device is provided with a detecting means for detecting whether or not the occupant is seated, and the actuator is operated only when the seating of the occupant is detected. 4. When the door is detected to be in the closed position, the control means actuates the actuator to return the seat back to the seated position.
The vehicle seat device described.