JP2991034B2 - Vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat provided with a mechanism for restricting seating by flipping up a cushion like a second seat of a one-box type vehicle and a mechanism for rotating the seat.

[0002]

2. Description of the Related Art For example, in a vehicle called a one-box car, a front seat 2, 3, a second seat 4, 5 and a rear seat 6 are arranged in a vehicle 1 in three rows as shown in FIG. As the second sheets 4 and 5, there is a separate type. Further, the separate type second seats 4 and 5 are rotatable to the outside so that the position can be adjusted in the front-rear direction, and can be rotated sideways by 90 ° inward or rearward by 180 ° rotation. It is preferable that the seated occupants can easily interact with each other.

[0003] When carrying luggage, the second seats 4, 5 are moved to the front side, and the seat backs 4b, 5b are moved.
It is desirable to lay the rear seat 6 on the cushions 4a, 5a by folding it down and further fold the rear seat 6 to increase the storage capacity. In order to meet such demands, the second seat 4,
2, a cushion 4a can be flipped up, rotated and seated in a rearward movement range (rear slide position) A as shown in FIG. It has been proposed that sliding, rotation, and seating are not allowed only when the cushion 4a is flipped up. The second sheet 5 is the same as the second sheet 4.

[0004]

As a rotary seat for a vehicle, for example, Japanese Patent Application Laid-Open Nos. 2-1493 and 2-3 have been disclosed.
There is the one disclosed in 1951. However, these rotary seats are mechanisms for simply rotating the seat, and as shown in FIG. 2, the second seat 4 can be seated in the rearward movement range A, and can be flipped up and rotated. It is impossible to make the seating impossible and the rotation impossible within the moving range B.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a seat having a mechanism for restricting seating by flipping up a cushion and a mechanism for rotating the seat, such as a second seat of a one-box type vehicle. An object is to provide a suitable vehicle seat.

[0006]

According to the present invention, there is provided an upper rotating disk rotatably disposed on a lower rotating disk which is slidable forward and backward on a seat slide rail. A seat frame disposed on the turntable to support the cushion so that the cushion can be flipped up; a cushion flip-up mechanism provided on the seat frame; and a seat rotation mechanism disposed between the lower turntable and the upper turntable. A lock mechanism provided on the lower turntable for restricting the slide when the cushion can be seated, and a lock release mechanism provided on the seat frame for releasing the lock of the lock mechanism when the cushion is flipped up. The lock mechanism is provided on the lower rotating disk so as to be slidable up and down, a locking portion is formed at a predetermined position on one side, and a lower end is provided. The lock release mechanism is constituted by a lock plate that can be engaged with a stopper provided on the seat slide rail. The lock release mechanism is pivotally supported in the approximate center at the seat frame and is rotatable in the front-rear direction. A guide pin that engages with a pin fixed to the rear end of the cushion has a lower end with a guide pin that enters below the engagement portion of the lock plate at the front position of the seat regardless of the rotation direction of the upper rotating disk. A guide plate, which is pivoted by the cushion when the cushion is flipped up and pushes the guide pin to push the locking portion of the lock plate to an upper limit position; and a rotatably supported by the seat frame; When the cushion is flipped up, the guide pin is moved to the lock plate when the cushion is flipped up. Those constituted by the guide pin lock plate to hold the push-up position.

Further, the lock mechanism is supported by the lower rotating disk so as to be rotatable in the vertical direction, and has an engagement portion formed at a lower end thereof for engagement with a stopper provided on the seat slide rail, and a rear upper portion. The lock release mechanism is constituted by a lock plate provided with a slit that opens toward the front, and the lock release mechanism is pivotally supported in the approximate center at the seat frame and is rotatable in the front-rear direction. A guide pin engageable with a pin fixed to the rear end of the cushion is provided at a lower end with a guide pin that can be engaged with rotation of the seat from a direction facing the opening end of the slit, and the cushion springs up. A guide plate that engages with the slit when the guide pin is raised to rotate the lock plate to release the lock with the seat slide rail; A guide pin lock plate that is rotatably supported by a frame and is interlocked with the cushion flip-up mechanism to hold the guide pin at a position where the lock plate is rotated when the cushion is flipped up. It is composed.

[0008]

When the cushion can be seated, the lock plate is slid downward to the lower limit position, and the lower end thereof can be engaged with the stopper of the seat slide rail, thereby restricting the seat from sliding in the front-rear direction. At this time, the cushion can be rotated in either direction by the rotating mechanism. The guide pin fixed to the guide plate, regardless of the rotation direction of the upper rotating disc,
It is possible for the seat to enter below the locking portion of the lock plate at the forward position of the seat. When the cushion is flipped up, the guide plate rotates and the guide pin pushes up the lock plate via the locking portion, thereby releasing the lock of the lock plate with the slide rail. This allows the cushion to move up and down 360 °
And rotation over the same range.

Further, when the cushion can be seated,
The lock plate rotates so that the lower end can be engaged with the stopper of the seat slide rail, and the sliding of the seat in the front-rear direction is restricted. At this time, the cushion is rotatable in one direction, that is, the direction in which the slit of the lock plate is opened by the rotation mechanism. Then, the guide pin fixed to the guide plate can enter the slit of the lock plate when the sheet rotates and then rotates in the direction opposite to the rotation direction and returns to the forward position. When the cushion is flipped up, the guide plate rotates, the guide pin moves in the slit, rotates the lock plate, and releases the lock of the lock plate with the slide rail. This allows the cushion to be seated by flipping up and rotated by 270 °.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 3 shows an outline of a vehicle seat to which the present invention is applied, and FIG. 4 shows a cross section of FIG. The second seat 10 has a lower rotary plate 12 supported on a pair of left and right seat slide rails 11, 11 so as to be slidable in the front-rear direction.
An upper rotary disc 14 mounted on the lower rotary disc 12 and rotatably supported by the shaft 13; a seat frame 15 disposed on the upper rotary disc 14; a cushion 16 mounted on the seat frame; It comprises a seat back 17 and the like supported at the rear. The cushion 16 is of a flip-up type, in which both ends of a support shaft 18 penetrating the rear part of the seat frame 15 are rotatably supported by left and right side surfaces 15a, 15a of the seat frame 15 so as to be rotatable.
The both ends of a shaft 19 which penetrates the lower end to the left and right are rotatably supported on the left and right sides of the rear end of the seat frame 15 via brackets (not shown), so that the shaft 19 can be raised and lowered in the front-rear direction.

At the lower rear end of the cushion 16, seat cushion fixing pins 20, 20 extend horizontally to the left and right sides. On the other hand, both sides 1 of the seat frame 15
An arc-shaped guide groove 15b (only one side is shown) concentrically with the support shaft 18 is formed in each of the fixing pins 5a and 15a in a substantially quadrant shape from the front lower position to the rear upper position. The tip of 20 is movably fitted with a slight gap. The fixing pin 20 is located at the upper end of the guide groove 15b when the cushion 16 is in the seatable position shown by the solid line in FIG. 3, and moves downward in the guide groove 15b as the cushion 16 is flipped up and rotated upward. It moves and is located at the lower end of the guide groove 15b in a state where it is completely flipped up as shown by the two-dot chain line.

As shown in FIGS. 4 to 6, on one side of the seat 10, a lock mechanism 2 for restricting sliding in the front-rear direction is provided.
5. An unlock mechanism 26 for unlocking the lock mechanism 25 and a sheet flip-up mechanism 27 are provided. The lock mechanism 25 is provided on the lower rotary plate 12 and includes a lock plate fixing bracket 30 and a lock plate 31. The bracket 30 extends upward at substantially the center of one side of the lower rotary plate 12 and is fixed vertically.
Are arranged slightly lower than the guide groove 15b and closer to the front.

The lock plate 31 has a substantially crank shape when viewed from the side (FIG. 5). A slit 31a is formed in the upper part in the vertical direction, and an arc-shaped locking part 31b is formed in a substantially central part and faces downward. The lower end 31c is provided so as to be engageable with each stopper 11a provided at a predetermined position of the seat slide rail 11. The lock plate 31 has two pins 3 on the upper part of the bracket 30 through the slit 31a.
2, 33, it is supported so that it cannot swing and can slide vertically. When the lock plate 31 is moved down to the lower limit position by its own weight, the lower end 31c is locked by being locked by the stopper 11a, and is moved up to the upper limit position as shown by a two-dot chain line in FIG. The lock is released when the lower end 31c is separated from the stopper 11a.

The lock release mechanism 26 is provided for the seat frame 1.
5 is provided at the lower portion of the side surface 15a on the side corresponding to the lock mechanism 25, and includes a guide plate 35, a guide pin 3
6. A guide pin lock plate 37 is provided. The guide plate 35 has a substantially crank shape in a side view (FIG. 5), and is disposed vertically in the vicinity of the front end of the guide groove 15 b, and a central portion is pivotally supported by a shaft 38 below the guide groove 15 b so as to be rotatable. A guide pin 36 penetrates and is fixed to the lower end. The guide plate 35 has an upper portion curved toward the rear and a slit 35a aligned with the guide groove 15b at the upper end and opened toward the rear of the guide groove 15b.
Is formed, and can be engaged with the fixing pin 20 of the cushion 16.

The upper portion of the guide plate 35 that curves backward is formed to be larger than the lower portion. When the engagement with the guide pin lock plate 37 is released, the guide plate 35 turns forward. Movement is prevented. The upper bent portion 35b (FIG. 5) of the guide plate 35 is locked by a stopper formed on the side surface 15a of the seat frame 15 to prevent backward rotation.

The guide pin 36 is located below the locking portion 31b of the lock plate 31, and is separated from the locking portion 31b when the engagement with the guide pin lock plate 37 is released. 6) When engaging with the guide pin lock plate 37, the locking portion 31b is pushed up, and the lock plate 31 is moved upward to move the seat slide rail 11
Is released from engagement with the stopper 11a.

The guide pin lock plate 37 is arranged vertically behind the guide plate 35, and the upper part thereof is rotatably supported by the shaft 39 on the side surface 15a of the seat frame 15. A notch 37a is formed at a predetermined lower portion of a side surface of the guide pin lock plate 37 facing the guide plate 35, and can be engaged with the guide pin 36.

As shown in FIG. 6, the sheet pop-up mechanism 27 is provided diagonally above and behind the guide pin lock plate 37, and includes a sheet pop-up lever 40 and a return spring 41. Sheet flip lever 40
Are arranged in the up and down direction, the lower part is rotatably supported slightly below the guide groove 15 b by the shaft 42, and the notch 4 for locking the fixing pin 20 at the upper end of the cushion 16.
0a is formed. The notch 40a is used for the cushion 16
Is in the seated state, it enters the lower side of the fixing pin 20 to prevent the fixing pin 2 from moving downward, and when rotated clockwise, it separates from the fixing pin 20 and rotates the fixing pin 20. Make it possible.

The return spring 41 is wound around a shaft 42 by a winding spring, and has one end at a predetermined position on the side surface 15a, for example, the guide groove 1.
5b, the other end thereof is engaged with a notch formed at the lower end of the sheet flip-up lever 40, and applies a counterclockwise turning force to the sheet flip-up lever 40 in FIG. Is inserted under the fixing pin 20 of the cushion 16.

The upper end of the guide pin lock plate 37 and the lower end of the sheet flip-up lever 40 are connected via a link 43.
It is configured to rotate in conjunction with the sheet flip lever 40. An operation button 44 is fixed to the lower end of the sheet flip-up lever 40 so that the sheet flip-up lever 40 can be rotated clockwise against the spring force of the spring 41.

The operation will be described below. As shown in FIGS. 5 and 6, when the seat 10 is at the rear sliding position A (FIG. 2), the fixing pin 20 of the cushion 16 is located at the upper end of the guide groove 15b of the seat frame 15, and the seat flip-up mechanism is provided. The sheet flip-up lever 27 is rotated counterclockwise by the spring force of the spring 41 and enters the lower side of the fixing pin 20 to prevent the fixing pin 20 from moving downward.

The guide pin lock plate 37 has a notch 3
The engagement between the guide pin 7a and the guide pin 36 is released, and the guide pin 36 is located slightly below the locking portion 31b of the lock plate 31. And the lock plate 31
The lower end position is at the lower end 31c and the seat slide rail 11
Can be locked to the stopper 11a. Guide pin 36
Is positioned slightly below the locking portion 31b of the lock plate 31 and points below the locking portion 31b with an arrow C or D.
That is, the seat 10 moves left or right by 36 degrees.
It is possible to rotate over 0 °. That is, the seat 10 can be flipped up, rotated, and seated. Then, the sliding of the seat 10 from the rear slide position A to the front slide position B is restricted.

When the operation button 44 shown in FIG. 6 is pushed to the left in the figure to flip up the cushion 16, the seat flip-up lever 40 is rotated clockwise and comes off from below the fixing pin 20. As a result, the locking pin 20 is unlocked and the guide groove 15 b
It slides inside and moves downward, engages with the slit 35a of the guide plate 35, and moves to the lower end position while rotating the guide plate 35 counterclockwise. On the other hand, when the operating force is released, the sheet flip-up lever 40 returns to the original position by the spring 41.

As the guide plate 35 rotates counterclockwise, the guide pin 36 pushes up the locking portion 31b of the lock plate 31, and when the cushion 16 is completely flipped up, as shown in FIG. 35 guide pins 36 are cutouts 37 of guide pin lock plate 37
a and held at that position. In this state, the lock plate 31 is pushed up to the upper limit position,
The lower end 31c is the stopper 11 of the seat slide rail 11.
Separate from a. Thereby, seating of the seat 10 is restricted (seating is impossible), and the seat 10 can slide from the rear slide position A to the front slide position B.

In this state, when the seat 10 is rotated right or left by a rotating mechanism (not shown), the guide pins 36 of the guide plate 35 are disengaged from the locking portions 31b of the lock plate 31, and the lock plate 31 31 falls by its own weight and the seat slide rail 1
The first stopper 11a can be locked (FIG. 8). That is,
The seat 10 moves from the rear slide position A to the front slide position B
The slide to is regulated.

When the lock plate 31 is at the lower limit position as shown in FIG. 8, both sides of the locking portion 31b are located slightly above the guide pins 36 held by the guide pin lock plate 37. Therefore, the guide pin 36 is connected to the guide plate 35 by the arrow D or C in FIG.
It is possible to enter under the locking portion 31b from the direction and return to the state of FIG. 7 while pushing up the lock plate 31. That is, the seat 10 can be rotated 360 ° in a state where the cushion 16 is flipped up. Thereby, the seating regulation and the 360 ° rotation are compatible, and the usability is improved.

FIG. 9 shows another embodiment of the present invention.
A rotary lock plate 50 is used in place of the slide lock plate 31 shown in FIG. The lock plate 50 has a substantially center rotatably supported by the lower turntable 12 by a shaft 51, a lower end 50 a facing downward, forming an L-shape, and a stopper 1 of the seat slide rail 11.
1a. Also, at the upper end 50b,
A slit 50c is provided facing the guide pin 36, the upper side 50d of the open end is curved diagonally upward, and the lower side 50e is cut down diagonally downward to form a wide mouth.

When the seat 10 can be seated, the guide pin 36 of the guide plate 35 is engaged with the innermost portion of the slit 50c of the lock plate 50, and the lower end 50a of the lock plate 50 is engaged with the stopper 11a of the seat slide rail 11. It is in a position where it can be engaged. In this state, the seat 10 is rotatable in the direction of arrow C. When the cushion 16 is flipped up, as shown in FIG.
Moves the lock plate 50 counterclockwise and pushes it up while moving backward in the slit 50c of the lock plate 50.

When the cushion 16 is completely flipped up, the guide pin 36 is locked by the guide pin lock plate 37 and is located near the opening end of the slit 50c of the lock plate 50. And lock plate 5
0 is the stopper 11a of the seat slide rail 11.
Away from the top. This allows the lock plate 50
Is disengaged from the stopper 11a and becomes slidable.

When the seat 10 is rotated in the direction of arrow C and the guide pin 36 comes out of the slit 50c of the lock plate 50 in a state where the cushion 16 is flipped up, the lock plate 50 is disengaged as shown in FIG. It rotates clockwise by its own weight, and the lower end 50a is again in a state where it can be engaged with the stopper 11a of the seat slide rail 11. On the other hand, the cushion 16 can be seated after being rotated sideways (90 °) or backward (180 °). When the cushion 16 can be seated in the rotated position of the seat 10, the guide pins 36 are disengaged from the guide pin lock plate 37, and the guide plate 35 returns to the state shown in FIG. The slit 50c of the lock plate 50 opens rearward, and the guide pin 36 can be engaged with the slit 50c.

When the cushion 16 is returned forward as shown by the arrow D while the cushion 16 can be seated as shown in FIG. 11, the guide plate 35 is in a state shown by a two-dot chain line, and the guide pin 36 is 50 slits 5
0c. When the cushion 16 is returned to the front with the cushion 16 flipped up as indicated by the solid line, the guide pin 36 is located at a position slightly higher than the position indicated by the two-dot chain line as indicated by the solid line. However, the lock plate 50
Since the upper end 50d of the opening end of the slit 50c is curved upward, the guide pin 36 can enter the slit 50c while pushing up the upper side 50d. still,
In this case, the seat 10 cannot be rotated from the opposite side of the lock plate 50 from the slit 50c. As a result, the seat 10 can be rotated up to 270 °, and can be returned to the original position.

[0032]

As described above, according to the present invention, the lock plate for restricting the slide of the seat is slid up and down, so that the seat can be restricted by flipping up the cushion and the rotation over 360 ° can be achieved. It is possible to achieve both, and it is particularly easy to use the second sheet. In addition, even in a type in which the lock plate is rotated, the seat can be restricted by flipping up the cushion and the rotation over 270 ° is possible, so that there is an effect that it is easy to use.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a vehicle seat provided with a flip-up type second seat.

FIG. 2 is a plan view of the second sheet of FIG.

FIG. 3 is a side view of a main part of a vehicle seat to which the present invention is applied.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an enlarged view of a main part of FIG. 4;

FIG. 6 is a side view of FIG. 5;

FIG. 7 is an explanatory view showing a state in which the cushion of FIG. 6 is flipped up.

FIG. 8 is an explanatory diagram when the sheet is rotated in FIG. 7;

FIG. 9 is an enlarged view of a main part showing another embodiment of the vehicle seat according to the present invention.

FIG. 10 is an explanatory view showing a state in which the cushion of FIG. 9 is flipped up.

11 is an explanatory diagram when the sheet in FIG. 10 is rotated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 4, 5, 10 Second seat 11 Seat slide rail 12 Lower turntable 14 Upper turntable 15 Seat frame 15b Guide groove 16 Cushion 17 Seat back 18, 19 Axis 20 Fixing pin 25 Lock mechanism 26 Lock release mechanism 27 Seat flip-up Mechanism 31, 50 Lock plate 35 Guide plate 36 Guide pin 37 Guide pin lock plate 40 Sheet flip-up lever 43 Link 44 Operation button

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60N 2/00-2/54 A47C 7/56

Claims (2)

(57) [Claims] 1. An upper rotary disc rotatably disposed on a lower rotary disc slidable back and forth on a seat slide rail, and a seat frame disposed on the upper rotary disc and supporting a cushion so that the cushion can be flipped up. A cushion flip-up mechanism provided on the seat frame; a seat rotation mechanism disposed between the lower rotating disk and the upper rotating disk; a cushion rotating mechanism provided on the lower rotating disk when the cushion can be seated. A lock mechanism that regulates the slide, and a lock release mechanism that is provided on the seat frame and releases the lock of the lock mechanism when the cushion is flipped up. The lock mechanism slides up and down on the lower rotating plate. A locking portion is formed at a predetermined position on one side surface so that the lower end can be engaged with a stopper provided on the seat slide rail. The lock release mechanism is pivotally supported at a substantially central portion by the seat frame, is rotatable in the front-rear direction, and is engaged with a pin fixed to a rear end of the cushion at an upper portion. A guide pin is provided at a lower end of the lower end of the lock plate at a position forward of the seat irrespective of the rotation direction of the upper rotating disk and below the engaging portion of the lock plate. A guide plate that is moved to push the locking portion of the lock plate to the upper limit position, and is rotatably supported by the seat frame, and is interlocked with the cushion flip-up mechanism, so that the cushion is flipped up. A guide pin lock plate for holding the guide pin at a position where the lock plate is pushed up when A vehicle seat characterized by comprising: 2. An upper turntable rotatably disposed on a lower turntable that is slidable back and forth on a seat slide rail, and a seat frame disposed on the upper turntable and supporting a cushion so that the cushion can be flipped up. A cushion flip-up mechanism provided on the seat frame; a seat rotation mechanism disposed between the lower rotating disk and the upper rotating disk; a cushion rotating mechanism provided on the lower rotating disk when the cushion can be seated. A lock mechanism that regulates the slide, and a lock release mechanism that is provided on the seat frame and releases the lock of the lock mechanism when the cushion is flipped up. The lock mechanism is vertically attached to the lower rotating disk. An engaging portion that is rotatably supported and engages with a stopper provided on the seat slide rail is formed at a lower end, and a rearward is formed at an upper portion. The lock release mechanism is constituted by a lock plate provided with a slit that opens to face, and the lock release mechanism is pivotally supported in the approximate center at the seat frame and is rotatable in the front-rear direction. A guide pin is provided at a lower end of which an engagement portion that engages with a pin fixed to a rear end of the cushion is engageable with rotation of the seat from a direction facing an opening end of a slit of the lock plate of the seat. A guide plate that engages with the slits to rotate the lock plate to release the lock with the seat slide rail at the time of bouncing up, and the cushion bouncing is supported by the seat frame so as to be rotatable; The guide pin was rotated by the lock plate when the cushion was flipped up in conjunction with a lifting mechanism. A vehicle seat, comprising: a guide pin lock plate held in a position.