JP3299665B2 - Reclining seat for vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat for a vehicle such as an automobile, and more particularly to a reclining seat for a vehicle in which a seat back can be largely moved forward.

[0002]

There is a reclining seat for a vehicle in which a seat back can be largely moved forward in order to increase a space for loading a load. Some reclining seats of this type include a memory mechanism for returning the reclining angle to the immediately preceding reclining angle when the seatback in the forwardly inclined state is erected. However, since the conventional one is rotated by using the reclining shaft at the time of moving forward, the seat back cannot be largely rotated until the rear surface of the seat back becomes nearly horizontal. I could not load my luggage in a stable condition. Further, since the seatback is not normally locked in the forwardly moved state, there is also a problem that the forwardly moved seatback swings due to vibration of the vehicle or the like.

On the other hand, the seat with the front-falling lock device disclosed in Japanese Utility Model Laid-Open Publication No. Sho 58-178027 does not have the problem that the seatback that has fallen forward swings, but uses a reclining shaft similarly to the above-mentioned prior art. Since the seat back is moved forward, the seat back cannot be moved forward to near the horizontal, and the loadability of the luggage is not always sufficient.
In addition, since the reclining mechanism is also used as the locking mechanism for tilting the seat back forward, the reclining angle must be adjusted again by the reclining mechanism without returning to the previous reclining angle when erecting the seat back in the forward tilted state. There is a hassle of having to do it. An object of the present invention is to solve each of these problems.

[0004]

SUMMARY OF THE INVENTION A reclining seat for a vehicle according to the present invention has a reclining axis for reclining a seat back and a forwardly moving axis for moving a seat back forward. releasably locking the upright lock mechanism you
And releasably locked with the seat back moved forward
In the reclining seat for a vehicle equipped with a forward leaning lock mechanism , the reclining axis and the forward leaning axis are
Each on the seat back or seat cushion frame
And is rotatably connected to both frames and includes both axes.
Arm with a seat back
The tilting angle around the tilting axis during the
The back of the seat back is almost flat at the inclined position for normal use.
Set so that it is horizontal, and each lock mechanism
And the respective frames are releasably locked .

[0005]

[0006]

In the invention of the preceding paragraph , it is preferable that a backboard covering the rear side is fixed to the seatback, and one side edge of the table is attached to the backboard via a hinge so as to be opened and closed by approximately 180 degrees.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS. As shown in FIGS. 1 and 2, the vehicle reclining seat according to the present embodiment includes a seat cushion 10 and a seat back 20, and the seat back 20 is provided at a rear portion of the seat cushion 10 with a reclining mechanism 15 (see FIG. 3). ), The rotation about the reclining axis O1 and the forward-moving axis O
It is attached so as to be rotatable about 2. The main body 11 of the seat cushion 10 is obtained by covering a seat cushion pad provided on a seat cushion frame (not shown) with a skin, and is mounted on the floor of an automobile so as to be adjustable in the front-rear direction. It is covered with a shield 12 made of resin.

[0009] The reclining mechanism 15 is mainly configured as shown in FIG.
As shown in the figure, a pair of lower arms 16 on the left and right sides connected to each other so as to be rotatable about a reclining axis O1.
And an upper arm (arm) 17. Each lower arm 16 is fixed to both sides of the rear portion of the frame of the seat cushion 10, and each upper arm 17 rotatably supports both lower sides of the frame 22 of the seat back 20 around a forward tilting axis O2 above the reclining axis O1. I have. In the illustrated embodiment, the angle between the lower arm 16 and the upper arm 17 is continuously changed by a planetary gear mechanism using an internal gear and a reclining motor (both not shown), so that the inclination angle of the seat back 20 is reduced. Adjusted. However, the reclining mechanism 15 is not limited to such a type, and any type such as a manually stepped type using a pole and a ratchet can be used. FIG. 3 shows only the right half of the reclining mechanism 15, the seat back frame 22, and members related thereto, and the left half is not shown.

Although not shown, the seat back frame 22 has a plurality of S-springs stretched between both sides, and covers the seat back pad abutting on the front side thereof with a seat back cover. The main body 21 of the seat back 20 shown in FIG. 1 and FIG. The back side of the seat back body 21,
Thin backboard 2 on both sides and upper side made of synthetic resin
5, and a lower edge of a table 50 described later is attached via a hinge 53 so as to be openable and closable by 180 degrees.

As shown mainly in FIG. 3, the seat back frame 22 comprises a pair of left and right upper members 22a formed by bending a pipe member in a downward U-shape, and plate members which are welded to lower portions on both sides and extend downward. A lower frame 22b;
It is constituted by a connecting portion 22c that integrally connects the lower portions. The lower front side of each lower frame 22b is on the upper front side of each upper arm 17 of the reclining mechanism 15,
It is rotatably connected via a pivot pin 23 inserted concentrically with the forward tilting axis O2, and the pivot pin 23 is prevented from coming off by an E-ring 23a.

Next, an upright lock mechanism A and a forward lock mechanism B for locking the seat back frame 22 in the upright state and the forwardly tilted state, and a mechanism for releasing the locking thereof will be described. Each of these mechanisms is a seat back frame 22
Are provided on both sides of the lower part of the table, but only those on the right side will be described because they are symmetrical to each other. As shown in FIGS. 3 to 6, the hook plate 30 made of sheet metal is rotatably supported by a pin 32 which is caulked and fixed to the lower rear portion of the inner surface of the lower frame 22b with a spacer 32a interposed between the hook plate 30 and the lower frame 22b. The link 31 also made of sheet metal is rotatably supported via a pin 33 inserted into the lower center of the lower frame 22b and is prevented from falling off by an E-ring 33a. One end of both members overlaps each other. . The connecting pin 34 inserted at one end of the link 31 is inserted into an elongated hole 31a formed at one end of the hook plate 30 and is prevented from falling off by an E-ring 34a. Are connected to rotate. A tension spring 38 is stretched between the link 31 and the hook portion 22d cut and raised at both ends of the connecting portion 22c.
3 and the hook plate 30 is urged in a clockwise direction about the pin 32.

A hook-shaped engaging portion 30a is formed at the other end of the hook plate 30, and a stopper pin 36 is caulked and fixed to the outer surface of the other end of the link 31. At the tip of the mounting pin 35a which is inserted and welded inward to the upper rear side of the upper arm 17, a cap 3 made of a synthetic resin having excellent strength and wear resistance such as polyacetal resin is provided.
5 is fixed by a small screw 35b. A notch 37 is formed on the upper front side of the upper arm 17, and the outer edge of the upper arm 17 near the upper side thereof gradually increases in radius from the forward axis O2 as it advances toward the notch 37 from above the forward axis O2. A guide surface 17a is formed. The hook plate 30 and the cap 35 are engaged with each other by the spring 38 when the seat back frame 22 is in the upright state, and the seat back 20 is
The upright lock mechanism A that locks the seat back frame in the upright state, the connecting pin 34 and the notch 37
When the seatback 20 is in the forward leaning state, a forward lock mechanism B is configured to engage with each other by the spring 38 and lock the seatback 20 in the forward leaning state.

A lever 41 made of sheet metal is rotatably supported on a pin 41 which is fixed by caulking to the front side of an ear portion 22e having the rear side of each lower frame 22b bent inward.
The lever 40 is bent in a shape obtained by combining the U-shape in the opposite direction, and the outwardly directed tip portion 40c is formed in the lower frame 22b.
Through the opening 22f formed in the back board 2
The knob 42 comes out of the slit of the bezel 26 attached to the window hole 25b of No. 5, and is inserted and fixed. Lever 40
Eccentric bent part 40b and hook part 30 of hook plate 30
No. 0c is connected by hooking U-shaped bent portions at both ends of the first connection wire 43 into small holes provided in the respective holes, whereby the knob 42 is urged downward by the spring 38 and the knob Located on the side. A small hole is also provided at each end of a pair of arm portions 40a extending vertically from the rotation center portion of the lever 40, and each small hole of each of the left and right levers 40 is a pair of second connecting wires 44 crossed at an intermediate portion. U at both ends
It is connected by hooking the character-shaped bent part. Left and right knob 4
2 is pulled up, the levers 40 rotate around the pins 41 in opposite directions via the second connection wires 44 so that the upper side approaches and the lower side separates.
Each hook plate 3 connected via the connection wire 43
The 0 and the link 31 are turned in the counterclockwise and clockwise directions against the spring 38. Thereby, the engagement of the locking portion 30a with the cap 35 in each locking state,
The engagement of the stopper pin 36 with the notch 37 is released, and the seat back 20 can be freely moved up and down with respect to the upper arm 17.

A back board 25 covering the rear, both sides and upper side of the seat back main body 21 is a thin molded product made of a synthetic resin such as polypropylene, and is fixed to the seat back frame 22. As shown mainly in FIG. 7, a large concave portion 25a for accommodating the table 50 is formed in the center of the back surface (back side in the figure) of the back board 25, and a synthetic resin bezel 26 is formed in a window hole 25b provided in the lower portion on both sides. Is inserted and hooked on an integrally formed elastic claw (not shown) to hold the stopper.

As shown in FIG. 7, the table 50 comprises a frame-shaped main body 51 having a large opening formed in the center and a cover plate 52 adhered and fixed to one side thereof. Shallow and elongated recess formed in the surface (not shown)
The magnet plate 55 provided therein is covered by the cover plate 52. Both the main body 51 and the cover plate 52 are made of synthetic resin. Hinge 53 supporting table 50
Is composed of a pair of left and right brackets 53a, a pair of left and right protrusions 53b integrally formed on the lower edge of the main body 51, and a shaft 53c. Each pair of brackets 53
a is a seat 25 formed at the lower portion of the inner surface of the backboard 25.
d, each head is projected from the opening 25c to the back of the backboard 25, and both ends of the shaft 53c passing through each projection 53b are supported by the head. As a result, the table 50 is stored in the recess 25a as shown by the solid line 50 in FIG. 2, and is rotated by 180 degrees about the shaft 53c of the hinge 53 as shown by the arrow C to form a two-dot chain line 50A. It is opened and closed between open states as shown. A magnet plate 56 is provided on the inner surface of the back board 25 at a position corresponding to the magnet plate 55.
When the table 50 is closed and the table 50 is closed, the magnetic force of the magnet plates 55 and 56 attracts the table 5.
0 is kept in the closed state.

4, the rear lower edge of the lower frame 22b of the seat back frame 22 is
5 and stopped at the same time, the hook plate 30 urged in the counterclockwise direction by the spring 38 rotates in the clockwise direction, and the locking portion 30a is engaged with the cap 35 so that the standing lock mechanism is provided. A is locked. If the reclining mechanism 15 is operated in this state, the seat back frame 22 rotates together with the lower arm 16 about the reclining axis O1 to adjust the inclination angle of the seat back 20. When the left or right knob 42 is manually pulled up in this state, the left and right levers 40 are rotated in opposite directions so that the upper sides approach, and as shown in FIG. The hook plate 30 is rotated counterclockwise against the spring 38 to rotate the
The engagement of the locking portion 30a with the lock member 5 is released, and the locking of the upright lock mechanism A is released. As a result, the seat back 20 can be tilted forward about the tilt axis O2 while the angle of the upper arm 17 is maintained.

If the knob 42 is released after the start of the forward leaning, the link 31 is rotated by the spring 38 and the stopper pin 36 is brought into contact with the guide surface 17a of the upper arm 17. The link 31 is rotated clockwise by the surface 17a against the spring 38.
Then, when the stopper pin 36 is brought forward to reach the position of the notch 37, the stopper pin 36 enters the notch 37 by the urging force of the spring 38, and the frontward locking mechanism B is locked. The forward tilting angle is set so that the backboard 25 on the back of the seatback 20 is almost horizontal (see FIG. 2) when the seatback 20 is normally used at an inclination angle. Therefore, in this state, the luggage can be stably placed on the back board 25. When the table 50 is also opened by being rotated by 180 degrees around the shaft 53c, the table 50 becomes almost horizontal as shown by the two-dot chain line 50A. Become. In this state, the recess 25a of the backboard 25 in front of the table 50 also
Can be used as a table.

When the left or right knob 42 is pulled up with respect to the back board 25 in the forward tilted state, the left and right levers 4 are moved.
0 rotates as described above, the link 31 rotates clockwise against the spring 38, the stopper pin 36 is disengaged from the notch 37, and the locking of the forward lock mechanism B is released. You. As a result, the seat back 20 is moved forward along the axis O.
2 can be raised around the center, and if the knob 42 is released in the middle, the link 31 and the hook plate 3
0 indicates that the stopper pin 36 is the guide surface 17 of the upper arm 17.
It is returned by the spring 38 until it comes into contact with a. If the seat back 20 further rotates in the upright direction, the hook plate 30
The inclined surface 30b of the locking portion 30a at the tip abuts against the cap 35 and rotates the hook plate 30 counterclockwise against the spring 38, and the rear lower edge of the lower frame 22b abuts against the cap 35 and stops. Hook plate 3 at the same time
0 is rotated clockwise by the spring 38 and the locking portion 30 is rotated.
a is engaged with the cap 35, the upright lock mechanism A is locked, and returns to the upright state shown in FIG. Since the upper arm 17 does not rotate around the reclining axis O1 during the forward and backward operations of the seatback 20 about the forward leaning axis O2, the seatback 20 returns to the inclination angle immediately before the forward leaning.

[0020]

According to the present invention as described above, the seat back is tilted forward about a tilt axis different from the reclining axis, so that the seat back can be tilted to near horizontal and a tilt lock mechanism is provided. seat back ahead condition may turn easily placed luggage on the rear of the seat back that is ahead of schedule since it is unnecessary to swing vibration by the. Moreover, the present invention provides a seat back and a seat cushion.
It has an arm connected to each frame of the
Lock mechanism enables release of this arm and each frame
It locks, so that the reclining mechanism
With the seat bar centered on the forward-moving axis.
The rocker pivots between the forward and standing positions,
If you raise the seat back in the closed state,
Return to the previous seatback angle, and renew the seatback angle
There is no need to adjust. Therefore, convenience in use is great.
Improve sharply.

[0021]

[0022]

[0023] Also, according to the present invention in which a backboard ho Isuzu 180 openably table fixed to the seat back, even in the table portion of the backboard opening the table while ahead of the seatback Since it can be used as an extension, a wide table surface can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall side view of a vehicle folding seat according to an embodiment of the present invention in a seatback standing state.

FIG. 2 is an overall side view of the embodiment shown in FIG. 1 in a state where a seat back is tilted forward.

FIG. 3 is a perspective view showing only the right half of a reclining mechanism, a seat back frame, and members related thereto in the embodiment shown in FIG. 1;

FIG. 4 is an enlarged side view of a main part of the embodiment shown in FIG. 1 in a seatback standing state.

FIG. 5 is an enlarged side view of a main part of the embodiment shown in FIG. 1 in a state where an upright lock mechanism is released.

FIG. 6 is an enlarged side view of a main part of the embodiment shown in FIG. 1 in a state where the seat back is tilted forward.

FIG. 7 is an exploded perspective view of the backboard and the table of the embodiment shown in FIG.

[Explanation of symbols]

10: Seat cushion, 16: Lower arm, 17: A
Arm ( upper arm ) , 20: seat back, 22: frame, 25: backboard, 42: knob, 50: table, 53: hinge, A: standing lock mechanism, B: forward tilt lock mechanism, O1: reclining axis, O2 … Advancing axis.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-109815 (JP, A) JP-A-59-86158 (JP, U) JP-A-7-8060 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B60N 2/32 A47C 1/024

Claims (2)

(57) [Claims] An upright lock mechanism having a reclining axis for reclining a seat back and a forward axis for moving the seat back forward, and releasably engaging the seat back in a state where the seat back is upright.
Can be released with the seat back moved forward
A reclining seat for a vehicle provided with a forward lock mechanism that locks the reclining axis and the forward lean.
The seat axis is the seat back or seat cushion, respectively.
Is located on the frame of the
An arm that is connected and includes the axes.
The forward-moving axis between the standing-up state and the forward-moving state of the
The forward tilt angle around the line is the same as the normal use of the seat back.
The back of the seat back should be almost horizontal in the inclined position
The lock mechanism is set to the arm and the frame.
A reclining seat for a vehicle, wherein the vehicle and the vehicle are releasably locked . 2. The vehicle according to claim 1, wherein a backboard covering a rear side is fixed to the seatback, and one side edge of the table is attached to the backboard via a hinge so as to be opened and closed by about 180 degrees. Reclining seat.