JP2003220868A - Vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat which is reversed and stored to be able to form a spacious cargo room continuous with a deck surface. <P>SOLUTION: The almost middle of a seat cushion 1a is supported with a swingable first link 2a so as to be reversed freely, and the first link pivotally attached to the body floor 20 in a position ahead of a cross member 21 arranged on the body floor. The lower part of the side face of a seat back 1b is supported with a second link 2b and a third link 2c shorter than the second link so that the seat back is folded forward freely. The second link 2b is extended along the side face extension line of the seat back 1b, and the base of the second link is pivotally attached to the body floor 20 in a swingable manner, while the third link 2c is linked to the seat back 1b at a pivotally attached part 5f lower than the pivotally attached part 5d of the second link 2b and to the body floor 20 at a pivotally attached part 5e behind the pivotally attached part 5c of the second link 2b. With the above structure of the seat, a spacious cargo room can be formed in such a way that its floor surface is lower than the surface of the seat. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular seat capable of forming a wide luggage compartment continuing to a deck surface by reversing and storing the seat.

[0002]

2. Description of the Related Art Recently, the use of automobiles has been diversified due to the widespread use of outdoor sports, etc., and there is also a need for vehicle seats that can be inverted and stowed to form a wide luggage compartment continuing to the deck surface. Highly, various things have been proposed. In this case, it is usual that the seat cushion and the seat back are turned upside down around the respective hinges that are erected on the floor surface to form a flat surface. Further, for example, as shown in Japanese Utility Model Laid-Open No. 62-56448, a structure in which a seat is moved along a slide rail to a predetermined position and then reversed to the front side is common.

However, in the conventional structure, since the hinge is fixed to the body floor surface, the seat cannot be inverted to a position lower than the height of the hinge. Further, a slide unit for moving the seat is also required as a separate component, which complicates the seat operation and increases the cost.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and allows the seat to be reversed and stored at a lower position than the conventional one, and since the slide rail is not used, the seat is easily installed. The present invention has been completed for the purpose of providing a vehicle seat that can perform the reversing work of 1. and can be made inexpensive.

[0005]

The vehicle seat of the present invention made to solve the above-mentioned problems is a vehicle seat comprising a seat cushion and a seat back, and a substantially central portion of the seat cushion is provided on a body floor. A first link that is pivotally attached to the front side of the provided cross member and is rotatable is reversibly supported. On the other hand, a lower side portion of a seat back extends in a side extension line direction of the seat back and a base portion of the body is formed. A second link pivotally attached to the floor,
It is shorter than the second link, the pivotal joint with the seat back is located below the pivotal joint of the second link, and the pivotal joint with the body floor is behind the pivotal joint of the second link. The seat cushion is supported so as to be able to be tilted forward with the third link positioned, and the seat cushion is inverted to the front side in a state where the first link is erected substantially vertically to the front side, and then the first link is returned to the original position to restore the seat. The back surface of the cushion is the upper surface, and the seat back is tilted forward while the center of rotation is moving downward to form a flat luggage compartment continuing to the deck surface.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1a is a seat cushion and 1b is a seat back. Also, 2
Reference numeral 0 is a body floor, 21 is a reinforcing cross member formed on the body floor 20, and 22 is a deck surface for loading luggage behind the seat. The above configuration is basically the same as a conventional vehicle seat. is there.

A substantially central portion of the seat cushion 1a is reversibly supported via a first link 2a. The first link 2a is provided on the front side of the cross member 21 provided on the body floor 20 in the bracket 3
The seat cushion 1 is pivotally mounted so as to freely rotate around the pivotally attached portion 5a, and the tip end portion of the seat cushion 1 is provided at the pivotally attached portion 5b.
It is a pivotal connection with a. Then, by supporting the seat cushion 1a with the first link 2a,
As shown in FIGS. 2 to 4, first, the first link 2a and the seat cushion 1a are erected substantially vertically to the front side, then only the seat cushion 1a is inverted to the front side, and finally, the first link is again formed. 2a is returned to its original position so that the back surface of the seat cushion 1a becomes the top surface. That is, by rotating the first link 2a and reversing the seat cushion 1a, the seat cushion 1a can be turned upside down at its original position.

On the other hand, the lower part of the side surface of the seat back 1b is
It is supported so as to be tilted forward through the second link 2b and the third link 2c. The second link 2b extends in the side surface extension line direction of the seat back 1b and has a base portion on the body floor 20.
It is pivotally attached to. Reference numeral 4 is a link mounting bracket, and 5c and 5d are pivotal attachment portions of the second link. Further, the third link 2c is shorter than the second link 2b, the pivotal attachment portion 5f of the seat back 1b is located below the pivotal attachment portion 5d of the second link 2b, and the third link 2c is pivotally attached to the body floor 20. The portion 5e is the pivotally attached portion 5c of the second link 2b.
It is configured to be located rearward of. Then, the seat back 1b is attached to the second link 2b and the third link 2c.
Seat back 1b
While the center of rotation moves downward, it falls forward and the deck surface 2
It is designed to form a flat luggage compartment following the second one.

Further, on the body floor 20, a seat cushion lock mechanism for fixing the lower end of the seat cushion 1a in a state where the seat is seated, and a seat for fixing the rear lower end of the seat back 1b. A lock mechanism for the back is provided. This seat cushion lock mechanism is specifically shown in FIGS.
As shown in FIG. 6, the striker 10 provided on the rear side of the cushion frame 7a and the lock member 11 provided on the body floor side are engageable with each other, while the seat back lock mechanism is a back mechanism. The lock member 12 provided on the lower side of the frame 7b and the striker 13 provided on the floor side are engageable with each other.
Further, these locking mechanisms are configured to be locked and reliably hold the seat shape in a state where the seat is seated.

The structure thus constructed is normally used for seating as shown in FIG. 1, and the seat cushion 1a and the seat back 1b are moved as necessary, and the structure is shown in FIG. As described above, a flat luggage compartment continuing to the deck surface 22 is formed. In this case,
As shown in FIG. 1, first, the seat cushion 1a is raised together with the first link 2a until it reaches a state in which the seat cushion 1a is erected substantially vertically toward the front side about the pivotal attachment portion 5a. At this time, the front end portion of the seat cushion 1a rotates smoothly without being caught by the cross member 21. Next, as shown in FIG. 3, the seat cushion 1a is turned upside down until it becomes substantially horizontal. After the complete inversion (or while it may be inverted), as shown in FIG.
When the link 2a is rotated rearward again and returned to the original position, the seat cushion 1a is set in the initial position with the back surface of the seat cushion 1a being the upper surface. As described above, since the seat cushion 1a is not inverted by a simple fixed hinge as in the conventional case, the seat cushion 1a after the inversion is performed.
There is no need for a to jump out to the front side, and it is not necessary to secure a space for that. In addition, since the pivotally connecting part 5b is movable, it can be inverted and stored at a lower position than a conventional fixed hinge. Becomes

On the other hand, the seat back 1b is moved by using the second link 2b and the third link 2c. When the seat back 1b is tilted forward, the second link 2b is moved as shown in FIGS. While the third link 2c is rotated rearward, the pivotal attachment portions 5d and 5f, which were initially almost vertically aligned along the side surface of the seat back, are gradually turned sideways, and the seat back is moved by the amount of rotation of the link. The center of rotation of 1b also gradually decreases. After the seat back 1b is completely inverted, as shown in FIG. 4, the pivotal attachment portions 5d and 5f are in a completely horizontal state, and the back surface of the seat back 1b forms a flat luggage compartment continuing to the deck surface 22. It will be. As described above, according to the present invention, the center of rotation of the seat cushion 1a and the seat back 1b moves downward, so that the seat can be inverted and stored at a lower position as compared with the conventional fixed hinge, thereby increasing the load carrying capacity and improving the usability. And so on. Moreover,
Since the seat cushion 1a can be inverted and stored at the same position, it is not necessary to secure an extra space and a compact seat design can be achieved.

[0012]

As is apparent from the above description, according to the present invention, the seat can be inverted and stored at a lower position than the conventional one, and since the slide rail is not used, the seat can be easily inverted. In addition to being able to do so, it can be made inexpensive. Therefore, the present invention is a vehicle seat that eliminates the conventional problems,
The areas that contribute to the development of industry are extremely large.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing a step of moving a sheet.

FIG. 3 is a front view showing a step of moving a sheet.

FIG. 4 is a front view showing a state in which a seat is moved to form a luggage compartment.

FIG. 5 is an exploded perspective view showing an embodiment of the present invention.

[Explanation of symbols]

1a seat cushion 1b seat back 2a First link 2b Second link 2c Third link 5a pivot part 5b Pivoting part 5c pivot 5d pivot 5e Pivoting part 5f pivot 20 body floor 21 Cross Member 22 deck side

Claims (2)

[Claims] 1. A vehicle seat including a seat cushion and a seat back, wherein a substantially central portion of the seat cushion is pivotally attached to a front side of a cross member provided on a body floor and is inverted by a rotatable first link. On the other hand, a second link having a lower side portion of the seat back which extends in a direction of an extension line of the side surface of the seat back and a base portion of which is pivotally attached to a body floor so as to be shorter than the second link. The forward link with the seat back and the third link whose pivotal part is located below the pivotal part of the second link and whose pivotal part with the body floor is behind the pivotal part of the second link. The seat cushion is freely supported, and the seat cushion is turned upside down with the first link standing substantially vertically to the front side, and then the first link is returned to its original position so that the back surface of the seat cushion becomes the upper surface. In addition, the vehicle seat is characterized in that the seat back is tilted forward while the center of rotation moves downward to form a flat luggage compartment continuing to the deck surface. 2. A lock mechanism for a seat cushion for fixing a lower end portion of a seat cushion to a seat on which a seat is seated, and a lock mechanism for a seat back portion for fixing a rear lower end portion of a seat back on a body floor. The vehicle seat according to claim 1, further comprising: