JP2004136874A - Seat of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat closely attached on an automobile frame (4) with a seat (2) and a seat back (3). <P>SOLUTION: In this seat, at a using position, the seat back (3) and the seat (2) are vertical to each other. At a storage position, the seat (2) is folded forward vertically, and the seat back (3) is returned backward of the seat (2). The seat back (3) is rotatably attached to the frame (4) by two connecting rods (12, 13) closely attached along an approximately trapezoid, so that it can be returned from the using position to the storage position at only one degree of freedom. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a vehicle seat.

Particularly, the present invention relates to a seat attached to an automobile frame that moves in a tilting direction between a use position and a storage position.

This sheet
A seat extending substantially horizontally between a front end and a rear end in a use position;
A backrest that extends substantially vertically between an upper end spaced from the seat and a lower end near the rear end of the seat in a use position and a storage position;
A pair of connecting rods each having a first tip associated with a backrest near a lower end thereof about first and second different axes, generally horizontal and vertical in the tilting direction, respectively. And a connecting rod.

Prior art documents describe an example of such a sheet. In this prior art seat, the first end of each connecting rod is attached to a backrest, while their second ends are pivotally connected to a seat. In this type of seat, the seat is fixed to the floor of the vehicle (for example, see Patent Document 1).
German Patent No. 199 58 676

This type of seat according to the prior art limits the possibility of loading bulky objects as long as the seat protrudes from the floor.

目的 The purpose of the present invention is particularly to eliminate this drawback.

Thus, according to the invention, a seat of this type is provided in which each connecting rod is further pivotally mounted on the frame about different third and fourth axes, respectively substantially horizontal and vertical in the tilting direction. And a second end configured to attach a connecting rod to the seat, wherein the seat is bent from a substantially horizontal position in the use position to a substantially vertical position in the storage position.

With these arrangements, it is possible to fold the seat forward and move the backrest forward behind the bent seat, thereby gaining more storage space.

In preferred embodiments of the present invention, optionally, both or one of the following arrangements may also be utilized.
Each of the first, second, third, and fourth axes is located at approximately one of the vertices of a parallelogram whose two opposite sides are formed by two connecting rods.
When the seat is in the use position, each has a T-section with first and second branches that extend substantially horizontally and vertically, and perpendicular to the first axis and the second axis, respectively. The first end of the connecting rod is pivotally mounted along the first branch, and the second branch is fixed to the backrest near its lower end.
The T-shaped steel comprises a key pivoting between a locked position and an unlocked position configured to associate the seat with the backrest in the locked position and to disconnect the seat from the backrest in the unlocked position.
The T-shaped steel is configured to releasably secure the backrest to the frame, wherein the key cooperates with the key to release the backrest from the frame when the key pivots from its locked position to the unlocked position. Having means.
Between a substantially vertical position when the seat is in the use position and a substantially horizontally bent position, about a sixth axis substantially horizontal and vertical in the tilting direction, relative to the T-shaped steel. An engaging portion configured to control rotation of the backrest is provided.
The seat is secured to the frame about a sixth axis and to the frame via a link rod pivotally mounted to the seat about a seventh axis near its forward end.
The seat and the backrest are configured to pivot with respect to the frame independently of each other.
The seat exerts a restoring force which tends to pivot the connecting rod from a position occupying the seat usage position to a position corresponding to the seat storage position about the third axis and the fourth axis, respectively. Resilient return means configured to be applied to the connecting rod of the present invention.

Describing one of these embodiments will clarify other aspects, objects, and advantages of the present invention.

The present invention will be more apparent with reference to the accompanying drawings.

In the various drawings, the same reference numbers represent similar or identical elements.

As an example, an embodiment of the sheet according to the present invention will be described in detail below.

In this embodiment, shown in FIGS. 1 to 10, the seat 1 according to the invention is a rear seat located behind the front seat 100. This seat has a seat 2 and a backrest 3. The seat 1 is mounted on a frame 4 of an automobile.

With reference to FIGS. 1 to 7, the seat 1 according to the invention can be moved between the use position (FIG. 1) and the storage position (FIG. 6) by movement in the tilting direction X, or for loading long loads, for example. Is attached to the frame 4 so that it can pass between a position (FIG. 7) where the loading capacity of the vehicle to which the vehicle is mounted can be increased (FIG. 7).

As shown in FIG. 1, in the use position, the seat 2 extends substantially horizontally between the front end 5 and the rear end 6. In the use position, at all times, the backrest 3 extends substantially perpendicularly between the upper end 7 remote from the seat 2 and the lower end 8 close to the seat 2.

The seat 1 is provided with side plates 9 on both sides in the tilting direction X.

側 Each side plate 9 has the shape of a T-shaped plate with two branches 10 and 11.

When the seat 1 is in the use position, the first branch portion 10 extends substantially horizontally and parallel to the tilting direction X. The second branch portion 11 extends substantially vertically when the seat is in the use position.

The first and second connecting rods 12 and 13 are pivotally attached to the side plate 9. Each of the first and second connecting rods 12 and 13 is formed of a rectangular flat long bar, and extends between the first end and the second end.

The first tip 14 of the first connecting rod 12 is fixed to the side plate 9 substantially at the level of the central part of the T-shaped steel, located between the first branch 10 and the second branch 11. Is done. The first tip 14 is pivotally mounted about a first axis Y1 that is substantially horizontal and vertical in the tilt direction X.

第 The first end 15 of the second connecting rod 13 is fixed to the side plate 9 at the level of the free end of the first branch 10. The first tip 15 is pivotally mounted about a second axis Y2 which is substantially horizontal and vertical in the tilt direction X.

The second tip 16 of the first connecting rod 12 is pivotally mounted on the frame 4 via a support 17 around a third axis Y3, which is substantially horizontal and vertical in the tilting direction X. The second tip 18 of the second connecting rod 13 is also pivotally mounted on the frame 4 via the same support 17 around a fourth axis Y4 substantially horizontal and vertical in the tilting direction X. .

The support portion 17 is firmly fixed to the frame 4.

The first axis Y1, the second axis Y2, the third axis Y3, and the fourth axis Y4 are distinguished from each other. They are arranged such that the two connecting rods 12, 13 of each pair of connecting rods do not intersect. Each of the first axis Y1, the second axis Y2, the third axis Y3, and the fourth axis Y4 has two opposing sides formed by a first connecting rod 12 and a second connecting rod 13. Are located almost at the vertices of the parallelogram.

The backrest 3 is pivotally mounted between the two second branches 11 of the side plate 9 about a fifth axis substantially horizontal and vertical in the tilting direction X. The rotation of the backrest 3 about the fifth axis Y5 is such that at least one link is provided between a position that is substantially upright when the seat 1 is in the use position and a position that is bent substantially horizontally. It is controlled by a landing part (not shown in FIGS. 1 to 10).

The seat 2 is pivotally attached to the support 17 via a link rod 19. Each link rod 19 is pivotally mounted to the support 17 about a sixth axis Y6 that is substantially horizontal and vertical in the tilt direction X. Each link rod 19 is also pivotally mounted to the seat 2 about a seventh axis Y7, which is substantially horizontal and vertical in the tilt direction X. Each link 19 is provided with a stopper 20 for limiting rotation (clockwise in the figure) about the seventh axis Y7.

シ ー ト As shown in FIG. 8, the sheet 1 is provided with locking means 21. These locking means 21 mainly include a key 22 and a cam 23.

The key 22 includes an operation branching unit 24, a control branching unit 25, and a locking branching unit 26. These branch portions 24, 25, 26 extend in a radial direction of approximately 120 ° from an eighth axis Y8, which is substantially horizontal and vertical in the tilting direction X.

The operation branching portion 24 has, at its free end, a lever 27 extending on the key 22 in a direction substantially horizontal and vertical in the tilting direction X. This lever 27 is configured to be able to move into a first slit 28 provided in the side plate 9. This first slit 28 extends along an arc centered on the eighth axis Y8. Each of the longitudinal ends of this first slit 28 limits the travel of the lever 27 and thus defines the locking position (FIG. 8) and the locking position (FIG. 10) of the key 22.

The control branch 25 has a rod 29 extending in the vertical direction substantially horizontally and vertically in the tilting direction X between two keys (22) located on both sides of the seat 1 near its free end. Is provided. The movement of the rod 29 is guided by a second slit 30 extending along an arc centered on the eighth axis Y8. The longitudinal end of the second slit 30 is configured such that when the lever 27 itself stops on the longitudinal end of the first slit 28, the rod 29 is pressed against those ends. .

The rod 29 is also configured to cooperate with a securing means 31 configured to removably secure the backrest 3 to the frame 4.

The locking branch portion 26 includes a notch 32 for cooperating with a column base 33 cooperating with the seat 2. The locking bifurcation 26 also includes a stop 34 protruding above the key 22 near the free end, extending substantially horizontally and vertically about the tilt axis X, and cooperating with the cam 23.

The cam 23 is substantially constituted by an arm 35 which is attached around a ninth axis Y9 which is substantially horizontal and vertical in the tilting direction X. The arm 35 has a slope 36 for cooperating with the pedestal 33.

When the user attempts to move the sheet 1 from the use position (FIG. 1) to the storage position (FIG. 6) or the position where long objects can be loaded (FIG. 7), the lever 27 is moved in the opposite direction to the clock hand. The lever 27 is operated while moving the lever 27 upward and forward (that is, along the tilt direction) so as to rotate around the eighth axis Y8.

こ う し た As shown in FIG. 9, such an operation releases the pedestal 33 from the notch 32 and guides the stopper 34 to cooperate with the slope 36.

As shown in FIG. 10, when the lever 27 is stopped in the first slit E28 in the unlocked position,
The slope 36 pushes the pedestal 33 forward,
The rod 29 lifts the hook 37.

The fixing means 31 is advantageously constituted by a locking assembly as described in French Patent 2,735,174, French Patent 2,793,199 or French Patent 2,798,628. . These locking means have bolts 37 connected to hooks 38. The hook 38 moves between a locked position (FIG. 8) and an unlocked position (FIG. 10). In the unlocked position, the hook 38 operates the bolt 37 so as to be released from the fixing hole 39 provided in the frame 4.

When the seat 2 is released from the backrest 3, as shown in FIG. 10, the user, on the one hand, raises the backrest 3 against the frame 4, as shown in FIG. As shown in FIG. 3, the seat can be tilted around a sixth axis Y6 and a seventh axis Y7.

As is clearly shown in FIGS. 2 to 6, the movement of the backrest 3 from the use position to the storage position is in only one degree of freedom around the first connecting rod 12 and the second connecting rod 13. This is done by turning.

In the storage position, the fixing means 31 cooperates with the second fixing holes 40 provided in the frame 4. In this way, when the lever 27 is released, the key 22 pivots about the eighth axis Y8 in the clockwise direction in the figure, under the stress of the return means not shown here. Thus, the bolt 37 can cooperate with the second fixing hole 40 again.

逆 The reverse movement from the so-called storage position to the use position is performed in the same manner as the above operation. Release the block of the fixing means 31 while operating the lever 27 so that it can be tilted around the first connecting rod 11 and the second connecting rod 12 in the clockwise direction toward the use position of the seat 1. In this use position of the seat, the locking means 21 can be locked again.

When the user intends to load long luggage in the vehicle, the lock of the engaging portion that controls the rotation of the backrest 3 around the fifth axis Y5 can be released. When the block of the engagement portion is released, the backrest 3 can further tilt forward when the front seat 100 and / or its backrest is moving forward and / or tilting (tilting direction X). At).

The reverse operation from the position for loading long luggage to the storage position is performed by unlocking the engaging portion that controls the rotation of the backrest 3 around the fifth axis Y5 so that the backrest 3 can be raised. Done. In some cases, the return to the use position is performed in the manner described above.

FIG. 11 shows an embodiment of the sheet according to the present invention. In FIG. 11, the sheet 1 is shown without any stuffing.

According to this variant, the seat 1 is closed relative to the connecting rods 12, 13 around the third axis Y3 and the fourth axis Y4, respectively, in the use position of the seat 1, It has elastic return means configured to apply a restoring force to the connecting rods, which tends to rotate the connecting rods 12, 13 into an arrangement corresponding to the storage position of the seat 1.

The elastic return means is constituted by torsion bars 41 and 42. Each of the torsion bars 41, 42 is mainly composed of a transverse rod (not shown in FIG. 11) and hooks 43, 44. The crossing rod extends in the longitudinal direction substantially perpendicular to the plane and the direction X of the rods constituting the connecting rods 12,13. The transverse rod is fixed to the support 17. They are free to rotate around the longitudinal axis during rotation of the hooks 43, 44 in a first angular region, while this rotation of the hooks 43, 44 is blocked in a second angular region. In the use position, the torsion bars 41, 42 are prestressed by the forced rotation of the hooks 43, 44 in the second angular region. The torsion bars 41, 42 facilitate the release of the fixing means 31 into the first fixing hole 39.

The hooks 43 and 44 are formed at the tip of the cross bar. The torsion bars 41, 42 have the shape of a hairpin, the two branches of which are on both sides of column bases 45, 46 projecting above the fifth connecting rod 12 and the second connecting rod 13, respectively. Pass.

The lever 27 according to the embodiment described with reference to FIGS. 1 to 6 is replaced by a lever 47 acting on a locking means (not shown in FIG. 11) similar to the one already described.

According to this modification, the two springs 48 connect the rod forming the stopper 20 to the rod connecting the column 46 of the second connecting rod 13 in front of the seat 2. These springs 48 located on both sides of the seat 1 facilitate the return of the seat 2 from the storage position to the use position when the backrest 3 itself is operated between these two positions.

The spring 48 also facilitates pivoting forward from the backrest 3 when the seat 2 is folded toward the stowed position.

By operating the lever 21, the user can release the seat 2 from the backrest 3 and release the fixing means 31 from the first fixing hole 39 in the same manner as described above. The backrest 3 can be lifted by the pretension of the torsion bars 41, 42. At this time, the user can tilt the seat 2 toward the storage position. By this operation, the spring 48 is tensioned. When the first connecting rod 12 and the second connecting rod 13 come to a substantially vertical position, the stress on the torsion bars 41, 42 is relaxed. Therefore, as long as the user only pushes the backrest 3 forward, the backrest will fit in the storage position. In this movement, the user is assisted by the restoring force exerted by the spring 48. Thus, the sheet 1 is placed in the state shown in FIG.

To load long luggage in the vehicle, the user can release the lock of the engaging portion 49 by the lever 50. In this way, the backrest 3 can pivot around the fifth axis Y5 when the front seat and / or its backrest has been advanced and / or tilted.

逆 The reverse operation of the long luggage from the loading position to the storage position and from the storage position to the use position is performed in the same manner as the above-described operation.

1 is a schematic side view of an embodiment of a seat according to the invention in a use position. 1 is a schematic side view of an embodiment of a seat according to the invention in an intermediate position. 1 is a schematic side view of an embodiment of a seat according to the invention in an intermediate position. 1 is a schematic side view of an embodiment of a seat according to the invention in an intermediate position. 1 is a schematic side view of an embodiment of a seat according to the invention in an intermediate position. 1 is a schematic side view of an embodiment of a seat according to the present invention in a stowed position. 1 is a schematic side view of an embodiment of a sheet according to the invention in a folded position. FIG. 8 is a schematic view of locking and unlocking means for tilting the sheet shown in FIGS. 1 to 7 and corresponding to a state where these locking means are locked. FIG. 8 is a schematic view of locking and unlocking means for tilting the sheet shown in FIGS. 1 to 7 and corresponding to a state where these locking means are partially unlocked. FIG. 8 is a schematic diagram of locking and unlocking means for tilting the seat shown in FIGS. 1 to 7, corresponding to a state where these locking means are completely unlocked. FIG. 8 schematically shows a variant of the embodiment shown in FIGS. 1 to 7, according to a section similar to FIGS. 1 to 7, in which the seat according to the invention is shown in use but without cushions .

Explanation of reference numerals

REFERENCE SIGNS LIST 1 seat 2 seat 3 backrest 4 frame 5 front end 6 rear end 7 upper end 8 low end 9 side plate 10 first branch portion of side plate 11 second branch portion of side plate 12, 13 connecting rod 14 12 first tip 15 13 The first tip 16 of the second 16 The second tip of the 12 17 The second tip of the support 18 13 The link rod 20 The stopper 21 The locking means 22 The key 23 The cam 24 The branch for operating the key 25 The branch for controlling the key 26 The key Branch portion for locking 27 lever 28 first slit 29 rod 30 second slit 31 fixing means 32 notch 33 column base 34 stopper 35 arm 36 gradient 37 bolt 38 hook 39 first fixing hole 40 second fixing hole 41, 42 torsion bar 43, 44 hook 45, 46 column base 47 lever 48 spring 49 engaging part 50 leverー 100 Front seat

Claims (10)

A seat (1) associated with a vehicle frame (4), which moves in a tilt direction (X) between a use position and a storage position,
A seat (2) extending substantially horizontally between a front end (5) and a rear end (6) in a use position;
In the use position and the storage position, the backrest (3) extending substantially vertically between the upper end (7) remote from the seat (2) and the lower end (8) near the rear end (6) of the seat (2). )When,
Each connecting rod (12, 13) has its back (3) lowered about its respective first (Y1) and second (Y2) axes, which are substantially horizontal and vertical in the tilting direction (X). A pair of connecting rods (12, 13) having a first tip (14, 15) associated near the end (8).
Each connecting rod (12, 13) is further pivotally connected to the frame (4) about a different third axis (Y3) and fourth axis (Y4), respectively, substantially horizontal and vertical in the tilting direction. A second tip (16, 18) configured to attach a connecting rod (12, 13);
A seat characterized in that the seat (2) is bent from a substantially horizontal position in a use position to a substantially vertical position in a storage position. The first (Y1) axis, the second axis (Y2), the third axis (Y3), and the fourth axis (Y4) are each formed by two connecting rods (12, 13) having two sides facing each other. 2. The sheet according to claim 1, wherein the sheet is located substantially at any one of the vertices of the parallelogram. When the seat (1) is in the use position, a first and a second branch () extending substantially horizontally and vertically, respectively, and perpendicularly to the first axis (Y1) and the second axis (Y2), respectively. 10, 11) having a T-shaped steel (9) with a first tip (14, 15) of each connecting rod (12, 13) pivotable along a first branch (10). Seat according to claim 1 or 2, wherein the second branch (11) is fixed to the backrest (3) near its lower end (8). The T-shaped steel (9) is configured to lock the seat (2) to the backrest (3) in the locked position and to disconnect the seat (2) from the backrest (3) in the unlocked position. 4. The seat according to claim 3, comprising a key (22) pivoting between the key and an unlocked position. The T-shaped steel (9) is configured to removably secure the backrest (3) to the frame (4), and when the key (22) rotates from its locked position to the unlocked position, the key (22). 5. The seat according to claim 4, comprising fixing means (31) which cooperates with (1) to release the backrest (3) from the frame (4). A fifth axis (Y5) that is substantially horizontal and vertical in the tilting direction (X) between a position that is substantially vertical when the seat (1) is in the use position and a position that is bent substantially horizontally; A seat according to any one of claims 3 to 5, comprising an engagement portion configured to control the rotation of the backrest (3) relative to the T-shaped steel (9) around the seat. A link rod (19) pivotally mounted on the frame (4) about a sixth axis (Y6) and on the seat (2) about a seventh axis (Y7). 7. The seat according to claim 1, wherein the seat is fixed to the frame (4) in the vicinity of the front end (5) of the seat. Seat according to any one of the preceding claims, wherein the seat (2) and the backrest (3) are configured to rotate independently of each other with respect to the frame (4). The seat according to any one of claims 1 to 8, wherein each connecting rod (12, 13) assumes a position hidden in the use position by the seat (2) and the backrest (3). A position corresponding to the storage position of the seat (1) from a position where the connecting rod (12, 13) occupies the use position of the seat (1) around the third axis (Y3) and the fourth axis (Y4), respectively. 10. A resilient return means configured to apply a restoring force that tends to pivot toward a position to the connecting rods (12, 13). Sheet.

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