JP2012126210A - Seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat allowing lock of a seatback to be released, and to be returned to a seating position, with a simple constitution.SOLUTION: When rotating a link 24 in the arrow A direction by a motor 20, a lever 30 is pressed by a lever pressing pin 28 to rotate the lever 30, a wire 46 is pulled, a lock lever 41 of a lock device 32 is rotated, and a hook part 41A retreats upward so as to open a cutout 38 (lock releasing state). The seatback 14 biased by a spring tilts in response to rotation of the link 24. When the link 24 is rotated in the arrow B direction by the motor 20, the link 24 presses a seatback raising pin 26 of the seatback 14, and the seatback 14 is raised up. A lock release of the seatback 14 and raising of the seatback 14 to a seating position are facilitated by the single motor 20.

Description

  The present invention relates to a seat, and relates to a seat that can be unlocked and returned to a seatable position with a simple configuration.

  A configuration has been proposed in which a seat back is unlocked by a first motor and a tilted seat back is returned to a seatable position (causes a seat back) by a second motor (for example, a seat of an automobile) (for example, , See Patent Document 1.)

JP2007-007386A.

  However, in the conventional seat, two motors and a control device for controlling these motors are required, and the number of parts of the drive system is large and the control is complicated.

  In view of the above facts, an object of the present invention is to provide a seat that can unlock the seat back and return the seat back to the seating position with a simpler configuration than the conventional one.

  The seat according to claim 1 includes a seat cushion, a seat back, a seat back driving mechanism that supports the seat back so as to be movable between a tilted state and a seatable state, and the seat back in the locked state. A locking means for holding the seat back in a seatable state and allowing the seat back to tilt in the unlocked state; and a single actuator for driving the locking means and the seat back driving mechanism; The seatback drive mechanism causes the seatback in the tilted state to be in a seatable state by the second operation of the actuator, by changing from the locked state to the unlocked state by the first operation of the actuator.

Next, the operation of the sheet according to claim 1 will be described.
First, when the seat back is raised and the occupant can be seated and the locking means is in the locked state, the seat back is held in the seated state by the locking means. On the other hand, when the locking means is in the unlocked state, the seat back can be tilted.

  Here, when it is desired to tilt the seat back in the seatable state of the occupant, the actuator is driven, and the locking means is changed from the locked state to the unlocked state by the first operation of the actuator. Thereby, the seat back can be tilted, and the seat back can be tilted.

  On the other hand, when the tilted seat back is caused to return to the seatable state of the occupant, the seat back driving mechanism is driven by the second operation of the actuator to cause the tilted seat back to occupy the seat back. Return to the seatable state.

  As described above, according to the seat of the present invention, it is possible to unlock the seat back and bring the seat back into a seatable state with a single actuator, and the configuration and the control are simpler than before.

It is a perspective view of a sheet concerning an embodiment of the present invention. It is a side view of a seat in a seatable state. FIG. 6 is a side view of the seat with the seat back unlocked. It is a side view of the sheet | seat in which the seat back was tilted.

Hereinafter, an embodiment of a sheet according to the present invention will be described with reference to FIGS.
As shown in FIG. 1, the seat 10 of this embodiment includes a seat cushion 12 and a seat back 14.

  Hinges 16 attached to the vehicle body are disposed on both sides of the vehicle rear side end portion of the seat cushion 12, and the vicinity of the lower end of the seat back 14 is supported by the hinges 16.

  The seat back 14 rotates about a shaft 16A of the hinge 16 between a seatable position (see FIG. 2) where an occupant can be seated and a tilted position (see FIGS. 1 and 4) disposed on the upper portion of the seat cushion 12. It is movable (arrow A direction and arrow B direction).

  The hinge 16 incorporates a spring (not shown) that urges the seat back 14 in the direction in which the seat back 14 is tilted (direction of arrow A).

  As shown in FIG. 2, the seat 10 is provided with a seat back driving mechanism 18. The seat back drive mechanism 18 is connected to a motor 20 disposed on one side of the seat 10. The motor 20 is attached to a vehicle body (not shown) so that the rotating shaft 20A of the motor 20 is coaxial with the shaft 16A of the hinge 16. The motor 20 is connected to the control device 22. Further, a battery (not shown) is connected to the control device 22.

  The end of one end in the longitudinal direction of the link 24 is fixed to the rotating shaft 20A of the motor 20, and the link 24 can swing around the rotating shaft 20A (arrow A direction and arrow B direction). .

  From the side portion of the seat back 14 on the side where the link 24 is provided, the seat back raising pin 26 protrudes to the side of the seat back. The seat back raising pin 26 is a side edge 24A on the back side of the seat back of the link 24, and can be brought into contact with the vicinity of the end of the motor 20 opposite to the side on which the rotating shaft 20A is attached. .

  A lever pressing pin 28 that protrudes to the side of the seat back is fixed in the vicinity of the rotating shaft 20 </ b> A of the motor 20 in the middle portion in the longitudinal direction of the link 24.

  A lever 30 is disposed on the side of the link 24. The lever 30 has a hole (not shown) formed at one end in the longitudinal direction, and a shaft 31 fixed to the vehicle body is inserted into the hole. As a result, the lever 30 can swing around the shaft 31 (in the direction of arrow C and in the direction of arrow D). Note that the lever pressing pin 28 of the link 24 can come into contact with the middle portion in the longitudinal direction of the side edge 30A of the lever 30 on the vehicle rear side.

As shown in FIGS. 1 and 2, the vehicle body is provided with a seat back locking device 32 on the side of the seat back. The seat back lock device 32 includes a bracket 34 attached to the vehicle interior side of the vehicle body side portion.
The bracket 34 is formed with a notch 38 into which a U-shaped striker 36 attached to the side portion of the seat back 14 can enter from the front side of the vehicle body.

  As shown in FIG. 2, the bracket 34 is provided with a lock lever 41 for fixing the striker 36 inserted into the notch 38 so as not to come out of the notch 38.

A shaft 40 is attached to the bracket 34, and a lock lever 41 is swingably supported on the shaft 40 (in the direction of arrow E and in the direction of arrow F).
A triangular hook portion 41 </ b> A is provided at the vehicle front side end portion (arrow FR direction side end portion) of the lock lever 41.

  A spring 42 for urging the lock lever 41 in the direction of arrow F is attached to the bracket 34. The lock lever 41 urged by the spring 42 normally abuts against a stopper 44 attached to the bracket 34. As shown in FIG. 2, they are arranged substantially horizontally. In this state, since the hook portion 41A is disposed on the opening side of the notch 38, the striker 36 inserted into the notch 38 is locked so as not to come out of the notch 38.

  One end of the wire 46 is locked to the end of the lock lever 41 opposite to the hook 41A side. The other end of the wire 46 is locked to the end of the lever 30 opposite to the shaft 31, and the movement of the lever 30 is transmitted to the lock lever 41 via the wire 46. The intermediate portion of the wire 46 is inserted into and supported by a hollow outer 48.

  A first limit switch 50 and a second limit switch 52 are attached to the vehicle body on the side of the seat, and the first limit switch 50 and the second limit switch 52 are connected to the control device 22. Has been.

  A trigger switch 56 and a tilt switch 54 are connected to the control device 22. By pressing the tilt switch 54, the rotating shaft 20A of the motor 20 rotates in the direction of arrow A, and the motor 20 continues to rotate until the switch lever 50A of the first limit switch 50 is pressed by the lever 30.

  On the other hand, when the trigger switch 56 is pressed, the rotating shaft 20A of the motor 20 rotates in the direction of arrow B, and the motor 20 continues to rotate until the switch lever 52A of the second limit switch 52 is pressed by the lever 30.

  As shown in FIG. 4, when the link 24 rotates in the direction of the arrow A and becomes substantially horizontal and the switch lever 50A of the first limit switch 50 contacts the side edge 24B of the link 24, the rotation of the motor 20 stops. To do. A stopper 53 for restricting the rotation angle of the link 24 is provided on the vehicle body. The state shown in FIG. 4 is a state in which the seat back 14 is unlocked and the seat back 14 is completely tilted.

  As shown in FIG. 2, when the link 24 rotates in the direction of arrow B and becomes substantially vertical, the switch lever 52A of the second limit switch 52 contacts the side edge 24A of the link 24 and the motor 20 rotates. Stops. FIG. 2 shows a state in which the seat back 14 is completely raised (occupant can be seated) and the seat back 14 is locked.

  As shown in FIG. 2, when the seat back 14 is in the occupant seatable position, that is, the striker 36 of the seat back 14 is inserted into the notch 38 of the bracket 34, and the hook portion 41 </ b> A of the lock lever 41 is When in the position to close the opening, the link 24 is oriented in the vertical direction, and the lever 30 is inclined obliquely rearward. At this time, the lever pressing pin 28 of the link 24 is in contact with the side edge 30A of the lever 30 on the vehicle rear side.

(Function)
Next, the operation of the sheet 10 of this embodiment will be described.
(1) When tilting the seat back 14 in the seatable state of the occupant, the tilt switch 54 is pushed.

(2) When the tilt switch 54 is pressed, the control device 22 rotates the motor 20, the link 24 rotates in the direction of arrow A, the lever 30 is pressed by the lever pressing pin 28 of the link 24, and the lever 30 is moved to the arrow C. Rotated in the direction. When the lever 30 is rotated in the direction of arrow C, the wire 46 is pulled and the lock lever 41 rotates in the direction of arrow E, and the hook portion 41A retracts upward so as to open the notch 38 as shown in FIG. unlock).

  Here, since the seat back 14 is urged in the direction of arrow A by the spring of the hinge 16, when the link 24 rotates in the direction of arrow A, the seat back raising pin 26 moves to the side edge 24 </ b> A on the back side of the seat back of the link 24. The seat back 14 gradually tilts in the direction of arrow A while coming into contact, and the striker 36 comes out of the notch 38.

(3) As shown in FIG. 4, when the link 24 rotates until it is substantially horizontal and the link 24 contacts the switch lever 50A of the first limit switch 50, the control device 22 automatically rotates the motor 20. The seat back 14 is stopped and becomes substantially horizontal (tilted position).

(4) On the other hand, when the tilted seat back 14 is caused, the cause switch 56 is pushed.

(5) When the trigger switch 56 is pressed, the control device 22 drives the motor 20 to rotate the link 24 in the direction of arrow B. As a result, the link 24 pushes the seat back of the seat back 14 and presses the pin 26 to oppose the biasing force of the spring of the hinge 16 and the seat back 14 is rotated in the pulling-up direction (arrow B direction) and the lever. 30 rotates in the direction of arrow D while contacting the lever pressing pin 28 of the link 24.

(6) When the lever 30 rotates in the direction of the arrow D, the wire 46 is sent out to the seat back locking device 32 side, and the lock lever 41 rotates in the direction of the arrow F.
Thereafter, the striker 36 of the seat back 14 is inserted into the notch 38 of the bracket 34, and the lock lever 41 is further rotated in the direction of the arrow F so that the hook portion 41 </ b> A closes the opening of the notch 38. When the inserted striker 36 is locked so that it does not come out of the notch 38, the seat back 14 becomes seatable, and the switch lever 30 of the second limit switch 52 is pushed by the link 24. The rotation of the motor 20 is automatically stopped.

  As described above, in the seat 10 of the present embodiment, the locking and unlocking of the seat back 14 and the tilting and raising of the seat back 14 can be easily performed by operating the tilt switch 54 and the raising switch 56. Further, in the seat 10 of the present embodiment, the seat back 14 is locked, unlocked, and the seat back 14 is tilted and caused by a single motor 20, and the motor 20 is also driven by the first limit switch 50 or the first limit switch 50. Since it is only necessary to rotate forward and reverse at a constant speed until the second limit switch 52 is operated by the link 24, the control is also simple.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

10 seat 14 seat back 18 seat back drive mechanism 20 motor (actuator)
24 link (seat back drive mechanism)
26 pins (seat back drive mechanism)
28 Lever pressing pin (locking means)
30 Lever (locking means)
31 axis (seat back drive mechanism)
32 Seat back locking device (locking means)
34 Bracket (Locking means)
36 striker (locking means)
40 axes (locking means)
41 Lock lever (locking means)
42 Spring (locking means)
46 wire (locking means)
48 Outer (locking means)

Claims (1)

Seat cushions,
Seat back,
A seat back drive mechanism that supports the seat back movably between a tilted state and a seatable state;
Locking means for holding the seat back in a lockable state and allowing the seat back to tilt in an unlocked state;
A single actuator for driving the locking means and the seat back driving mechanism;
With
The locking means is changed from the locked state to the unlocked state by the first operation of the actuator,
The seat back driving mechanism causes the seat back in a tilted state to a seatable state by a second operation of the actuator.

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