JPS62279148A - Seat device for automobile - Google Patents

Abstract

PURPOSE:To enable easy provision of full flat orientation, by a method wherein, when the back of a front seat is inclined to maximum, a rear seat cusion is rotated, and the inclination angle of the upper surface of the rear seat cushion is approximately coincided to that of the back of the front seat. CONSTITUTION:When a seat back 5 of a front seat 2 is inclined rearward to maximum, a motor 15 situated below a rear seat cushion 7 is run, and a shaft 16 is moved backward. Along with rotation of the shaft 16, a second link 22 and a third link 23 are lifted up and rotated around a hinge member 10 serving as a fulcrum. Rotation of an upper member 11 is continued until the inclination angle of an upper surface 7a of a seat cushion is approximately coincided to that of the seat back 5 of the front seat 2 brought into a maximum inclined state. When the inclination angles are coincided with each other, running of the motor 15 is stopped to provide a full flat seat state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seat device installed in a car.

(Conventional technology) Whiter than before! For example, as disclosed in Japanese Utility Model Application Publication No. 60-2693/L Tan, the seatback of the front seat is designed to be movable rearward, and the seatback is moved to the maximum extent as a device from Sea 1 of JJ fil. It is known that when tilted rearward, the seat back and the seat cushion of the rear seat are continuous with the road surface, and the front seat and the rear seat form a fully flat sea so that the seat tilts 1q. .

(Problems to be Solved by the Invention) However, in the above-mentioned conventional system, in the fully flat state, the seat back of the front seat is horizontal or slightly tilted forward and downward;
Since the upper surface of the rear seat cushion is tilted backward and downward in normal use, it is not possible to achieve a completely flat state.

The present invention has been made in view of the above, and its purpose is to move the seat backs of the front seats 1 to 1 backward (around 1) to make the front seat and the A7 seat full, as described above. By rotating the seat cushion of the rear seat, which makes up the flat seats 1 to 34, in accordance with the inclination angle of the seat back of the front seat, a completely flat state can be achieved. It is something to do.

(Method for solving the problem I (2)) In order to achieve the above object, the solution of the present invention is to provide the seat back of the front seat so that it can tilt backward, and to adjust the seat cushion of the rear seat so that its upper surface is tiltable. A rotatable support V is provided on the vehicle body so that the inclination angle is variable.Then, when the seat back of the front seat is tilted to the maximum, the seat cushion of the upper V seat is moved so that the inclination angle of its upper surface is the same as that of the front seat 1- seat cushion. The configuration includes a drive means for rotating the bag to a position that substantially matches the inclination angle of the bag.

(Function) With the above configuration, in the present invention, when the seat bank of the front seat is tilted rearward to the maximum extent, the seat back is not only connected to the seat cushion of the rear seat 1- in a substantially plane state; Due to the operation of the driving means 1, the seat cushion of the rear seat is rotated, and the inclination angle of its upper surface becomes approximately equal to the inclination angle of the seatback of the front seat in the maximum inclination state. Together with the tray sheet, a completely flat sheet is constructed.

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

1 and 2 show an automobile seat device according to a first embodiment of the present invention, in which 1 is a floor panel constituting the floor of the vehicle body, and 2 is a steering wheel 3 on the floor panel 1. The front seat 2 is made up of a seat cushion 4 and a seat back 5, and the lower end of the seat back 5 is turned to the rear end of the seat cushion 4. It is provided with a movable connecting support F, 'j, and can be tilted backward from the normal usage state where it is inverted at the rear end of the seal cushion 4, and when it is at its maximum tilt, it is a substantially horizontal position that is slightly tilted forward and downward. The situation is such that it is prone to collapse.

Further, numeral 6 is a rear seat installed on the floor panel 1 at a predetermined distance from the front seat 2, and the rear seat 6, like the front seat 2, is composed of a seat cushion 7, a seat back 8, etc. . The seat cushion 7 has a lower portion v fixed to the floor panel 1.
J9, and an upper member 11 that is located above the lower member 9 at a predetermined interval and whose lower portion 449 and front end portions are connected to each other via a hinge member 10. A cushion material 12 made of urethane resin or the like is provided on the upper member 11, and the cushion material 12 is covered with a skin material 13, and the top surface 7a of the seat cushion 7 is formed by this skin material 13. has been done. Therefore,
The seat cushion 7 is placed on the floor panel 1 at a connecting portion (hinge member 1) between the lower member 9 and the upper portion 4411.
0), and due to the relative rotation of the upper member 11 with respect to the lower member 9, i? The inclination angle of 1i7a is made variable.

Furthermore, in the darkness between the lower member 9 and the upper member 11,
A drive that rotates the upper member 11 in the seat cushion 7 of the rear seat 6 so that the angle of inclination of the upper surface 7a substantially matches the angle of inclination of the seat back 5 of the front seat 2 when the seat back 5 of the front seat 2 is tilted to the maximum. Means 14 are arranged. As shown in detail in FIG. 3, the drive means 14 includes a motor 15 disposed on the lower member 9 with a rotating shaft 15a facing the vehicle width direction, and a motor 15.
The shirt 1 is disposed in the front-rear direction so as to intersect with the rotating shaft 15a of the shirt 1, and has a screw portion 16 on its outer peripheral surface. The shaft 16 is supported on the lower member 9 via the holding member 17, and is attached to the shaft 1, 7.
A worm wheel 18 is screwed into the worm wheel 6 through a screw hole formed in its center at a portion intersecting with the rotating shaft 15a of the motor 15. The wormhole 18 is provided at the tip of the rotating shaft 158 of the motor 15, and is engaged with the wormhole 1719, and is sandwiched from both front and rear sides by a pair of brackets 20 and 20 fixed on the lower part +A9. 1) T return movement on shift/ft 1G is restricted. Therefore, when the motor 15 operates #J, the forward and reverse rotation of the rotating shaft 15a is controlled by the worm gear 19.
and is transmitted to the shirt l-16 via the worm wheel 18, and the shirt! The r-foot 16 is rotated while being supported by the holding member 17, and the front and rear diameter fl is
I am supposed to do it.

Further, one end of a first link 21 is connected to the rear end of the shaft 1G, and the other end of the first link 21 is connected to a lower member 9.
The second link 22 connected to the upper member 11 and the third link 23 connected to the upper member 11 are both fastened to a flexible connecting portion.

As the shaft 1/foot 16 moves backward, the second link 22 and the third link 23 extend, causing the upper member 11 to lift and move, while the shaft 16
When the upper member 11 moves forward, the second link 22 and the third link 23 perform a bending operation, and the upper member 11 is pulled down and rotated.

The motor 15 is connected to a switch 24 which is arranged near the connecting portion between the seat cushion 4 and the seat back 5 of the front seats 1 to 2 and detects the maximum tilting movements a and Y of the seat back 5. , is activated for a predetermined period of time when the seat back 5 is tilted to its maximum and when the seat back 5 is returned from the maximum tilted state to its original normal use state. Further, as the first link 21 of the driving means 14, as shown in FIG. 1. The upper member 11 is fixed to the connecting portion of the link 22 and the third link 23 so that the upper member 11 can be raised or lowered at two positions on the left and right as the seat shaft 16 moves back and forth. IIS may also be configured.

Next, to explain the operation of the above embodiment, the sea 1'
- When the device is in the normal use state J'3, the seat backs 5 of the front seats 1 and 2 are in an upright state at the rear end of the seat cushion 4, as shown by the solid line in FIG. Also, for Jj on the seat cushion 4 of SuX7 seat 2,
The upper member 11 is located substantially parallel to and opposed to the lower member 9 on the floor panel 1 side, and the seat cushion upper surface 7a is inclined rearward and downward. In this case, the second link 22 and the third link 23 of the drive means 14 are connected to the lower member 9.
and the upper member 11.

If the seatback 5 of the front seat 2 is tilted backward as much as possible from this state as shown by the imaginary line in FIG.
By operating the motor 15 in the forward rotation direction, the
The foot 16 moves toward the rear of the vehicle body, and with this movement, the second link 22 and the third link 23 extend, and the upper member 11 is held at the connecting portion (hinge member 10) with the lower member 9 as a fulcrum. Go up and rotate. The rotation J of the upper member 11 is such that the inclination angle of the seat cushion upper surface 7a is the maximum inclination +
The inclination angle of the front seat 2 is reached to a position that substantially matches the inclination angle of the seatback 5 of the front seat 2 in the h state, and when the inclination angle matches the inclination angle of the seatback 5 of the front seat 2, the operation of the motor 15 is automatically stopped.

As a result, the surface of the seatback 5 of the front seat 2 and the seamil cushion upper surface 7a of the receipt 6 are continuous with the planar shape B to form a fully flat seat.

On the other hand, when returning to the original usage state from the above-mentioned fully flat state, the seat back 5 of the front seat 1-2 is returned to the upright state at the edge of the seat cushion 419.
Driving! In the IJ means 14, the motor 15 operates in the reverse rotation direction, and the shaft 16 moves toward the front of the vehicle body. As a result, the second link 22 and the third link 23 perform a bending action, causing the upper member 11 to pull and rotate, and when the upper member 11 and the lower member 9 are opposed to each other in the original substantially parallel manner. The operation of the motor 15 stops automatically.

FIG. 5 and FIG. 6 show a modification of the driving means 3o for rotating the upper member 11 that falls on the seat back 8 of the Reno seat 6 as a second embodiment of the present invention. In this drive 1 means 30, the shafts 1 to 31 having threaded portions on the outer circumferential surface are vertically arranged to pass through the upper member 11 from the space between the lower member 9 and the upper member 11. ing. The shaft 31 is attached to a nut member 32 fixed to the upper member 11 at a portion connected to the upper member 11.
On the other hand, a worm wheel 34 that engages with the worm gear 33 is provided at the lower part of the shaft 31 (a portion corresponding to the space between the lower member 9 and the upper member 11).
The worm gear 1733 is provided at the tip of the rotating shaft 35a of the motor 35 disposed on the lower member 9, as in the case of the drive means 14 of the first embodiment.

Further, the lower end of the shaft 31 is connected to the lower member 9 via a connecting member 36, and this connecting portion allows rotation of the shaft 31 around the axis and connects the shirts 1 to 31 and the nut portion side 32. While the horizontal displacement along the lower member 9 at the lower end of the shaft 31 is accommodated so that the threaded portion is always maintained at right angles, the lower member 9 at the lower end of the shaft 31 is accommodated.
Define the displacement in the vertical direction to 1. II. Thus, when the motor 35 is in operation, the forward and reverse rotations of the rotating shaft 35i'l are transmitted to the shaft 31 via the worm gear 33 and the worm wheel 34.
By rotating the hair/foot 31 with its lower end held by the lower member 9, the nut member 32 on the upper member 11 side is threaded in the vertical direction along the shaft 31, and the upper member 11 is hinged. It is configured to rotate around the member 10.

A member of the shaft 31 located above the upper member 11 is protected by a cylindrical cover member 37. Moreover, since this shaft 31 protrudes above the upper member 11, that is, toward the cushioning material 12 side, the shaft 31 and the driver 1i, l+ means 30 are installed particularly between the lower member 9 and the upper part +411. It is set at a position on the side of the seating portion of the seat cushion 7.

(Effects of the Invention) As described above, according to the automobile seat system according to the present invention, the seat cushion of the A7 seat is rotated by the operation of the driving means when the seat back of the front seat is tilted to its maximum. Since the angle of inclination of the upper surface of the lever substantially matches the angle of inclination of the seat back of the front seat, the front seat and the carrier seat form a completely flat seat, and the seat weight is 6g.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIGS.
The figure shows the first embodiment, and FIG.
FIG. 2 is a sectional side view of the vicinity of the seat cushion of the plunger seat, and FIG. 3 is a perspective view of the driving means. ? tS4 is a perspective view showing a modification of the first link of the drive means, and FIGS. 5J3 and 6 are perspective views of the second link.
5 is a view corresponding to FIG. 2, and FIG. 6 is an exploded perspective view of the driving means. 2... Front seat, 5... Sea l-back, 6
... Rear seat, 7... Seat cushion, 7a.
...Top surface, 14.30...Driving means.

Claims (1)

[Claims] (1) The seat back of the front seat is provided so as to be tiltable rearward, the seat cushion of the rear seat is rotatably supported on the vehicle body so that the angle of inclination of its upper surface is variable, and the seat back of the front seat is A seat device for an automobile, comprising a drive means for rotating the seat cushion of the rear seat to a position where the inclination angle of the upper surface thereof substantially matches the inclination angle of the seat back of the front seat at the time of maximum inclination of the seat cushion of the rear seat.