JP2004276816A - Vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat capable of being easily folded with small force. <P>SOLUTION: A seatback 1a is folded forward to a seat surface of a seat cushion 1b, and the seat cushion 1b is moved to a housing part 21 on a rear side. A lower part of the seat cushion 1b is connected to a body 20 through a pair of front and rear links, a first link 3a and a second link 3b, so that the seat cushion 1b is moved to the rear side. Spring bodies 4 and 5 for applying resilient force are incorporated at least in one of the first link 3a and the second link 3b so that the seat is positioned on a neutral position wherein the seat weight and the resilient force are balanced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle seat that can easily perform a folding operation of a seat with a small force.
[0002]
[Prior art]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-29299
Recently, the use of automobiles has been diversified due to the development of outdoor sports and the like, and it has been demanded that vehicle seats can be arranged in various forms according to the purpose. Therefore, for example, as shown in Patent Document 1, when the seat back is tilted forward toward the seat surface of the seat cushion, the seat cushion is moved rearward, and the seat back is folded thereon, so that the rear surface of the seat back is on the rear deck. A variety of vehicle seats and the like, which will be the subsequent cargo floor, have been developed and put to practical use.
[0004]
However, in the conventional foldable vehicle seat, when an operation of folding and storing the seat or returning to the original seat state is performed, the entire seat is moved with the seat back overlapped on the seat cushion. Therefore, there is a problem that a large force is required. In particular, when returning to the original seat state, it is necessary to lift the folded and stored seat upward, which requires a large operation load. In addition, since the seat lock and the reclining lock must be released in order to store the seat in a folded state, the operation is complicated, and there is a problem that the operation cannot be easily performed with one hand.
[0005]
[Problems to be solved by the invention]
The present invention solves the conventional problems as described above, and can easily perform the folding operation of the sheet with a small force. Further, the operation procedure is extremely simple, and the folding operation can be easily performed with only one hand. It has been completed for the purpose of providing a vehicle seat that can be used.
[0006]
[Means for Solving the Problems]
The vehicle seat of the present invention made in order to solve the above-described problem is a vehicle seat for moving the seat cushion to the rear storage portion while tilting the seat back forward toward the seat surface of the seat cushion, A lower portion of the seat cushion is connected to the body by at least one pair of front and rear links of a first link and a second link so that the seat cushion moves rearward, and at least one of the first link and the second link has In addition, a spring body for applying a resilient force is incorporated so that the seat is located at a neutral point where the seat weight and the resilient force are balanced.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The drawings show a case in which the present invention is applied to a rear seat of an automobile. FIG. 1 is a view showing a normal state used as a seat, FIG. 4 is a view showing a state where the seat is folded and stored, and FIGS. It is a figure showing a state in a neutral point in a process.
In the figure, reference numeral 1 denotes a seat body composed of a seat back 1a and a seat cushion 1b, 2 denotes a reclining mechanism, 2a denotes a rotating shaft of the seat back 1a, and 2b denotes a bracket for connecting the seat back 1a and the seat cushion 1b. Reference numeral 20 denotes a body, reference numeral 21 denotes a concave storage portion for storing the sheet main body 1 formed in the body 20 in a folded state, and reference numeral 22 denotes a rear deck.
[0008]
In the present invention, the seat back 1a is tilted forward toward the seat surface of the seat cushion 1b, and the seat cushion 1b is moved to the rear storage section 21 so that the back surface of the seat back 1a folded on the seat cushion 1b is moved downward. It is configured to have a cargo floor surface following the rear deck 22.
The lower portion of the seat cushion 1b is connected to the body 20 by at least a pair of front and rear links of a first link 3a and a second link 3b so that the seat cushion 1b moves rearward. At least one of the second links 3b incorporates spring bodies 4 and 5 for applying a resilient force so that the seat is located at a neutral point where the seat weight and the resilient force are balanced.
A pair of front and rear links composed of the first link 3a and the second link 3b are arranged such that four links are respectively disposed on the left and right side surfaces of the seat cushion 1b, or a U-shape in front view in which the rotation shafts are connected by rods. Or, a front-back inverted U-shaped link is arranged two in front and back, or a pair of front and rear links is arranged on one side of the seat cushion 1b and a simple rotary link is arranged on the other side. Can be arbitrarily designed.
[0009]
More specifically, the first link 3a and the second link 3b incorporate spring bodies 4 and 5 such as torsion bars, and in the normal seat state shown in FIG. Abuts against the stopper piece 6 to constantly apply elastic force to move the first link 3a clockwise (clockwise). On the other hand, in the sheet storage state of FIG. 4, the end portion 5a of the spring body 5 abuts against the stopper surface 7 to constantly apply elastic force so as to move the second link 3b to the left (counterclockwise). I have.
As shown in FIGS. 2 and 3, a neutral position in which the seat weight and the resilient force of the spring body balance each other is located substantially at an intermediate position of the rotation locus of the link between the normal sheet state and the sheet storage state. Points are designed to exist.
[0010]
The body 20 is provided with seat locks 10 and 11 having an engagement mechanism such as an anchor and a hook for holding a seat state and a seat storage state used as a normal seat for seating. The seats can be fixed in the sheet state or the sheet storage state, respectively, against the resilience provided to be located at the position.
A lock release mechanism 12 for simultaneously releasing the seat lock and the reclining lock is provided on the back surface of the seat back 1a.
[0011]
As described above, according to the present invention, the lower portion of the seat cushion 1b is connected to the body 20 by the two links before and after the first link 3a and the second link 3b so that the seat cushion 1b moves rearward. The link 3a and the second link 3b have a structure in which spring bodies 4 and 5 for applying an elastic force are incorporated so as to be located at a neutral point where the seat weight and the elastic force are balanced.
Therefore, when shifting from the seat state to the seat storage state, if the seat lock and the reclining lock are simultaneously released by operating the lock release mechanism 12, the seat cushion 1b naturally moves rightward by the elastic force of the spring body 4. Then, the vehicle automatically stops at the neutral point where the seat weight and the resilience of the spring body are balanced (see FIG. 2). Next, in this state, the seat back 1a is tilted forward toward the seat surface of the seat cushion 1b (see FIG. 3). Further, when the entire sheet is pushed downward as it is, the sheet is stored in the concave storage portion 21 formed in the body 20 and is simultaneously locked by the sheet lock 11 to be in the sheet storage state (see FIG. 4).
[0012]
On the other hand, when returning to the normal sheet state, it can be easily returned by the reverse operation. That is, when the lock release mechanism 12 is operated to release the seat lock and the reclining lock at the same time, the seat cushion 1b naturally moves leftward due to the resilience of the spring body 5, and the seat weight and the resilience of the spring body are reduced. Will automatically stop at the neutral point where the balance is achieved (see FIG. 3). Next, the seat back 1a is caused in this state (see FIG. 2). Further, when the entire sheet is moved to the left as it is, the sheet is locked by the sheet lock 10 and a normal sheet state is obtained (see FIG. 1).
[0013]
As described above, in the present invention, if only the lock release mechanism 12 is operated, the entire seat automatically moves to the neutral point where the weight of the seat and the resilience of the spring body are balanced, and stops there. Is added, the seat can be easily switched between the seat state in which the seat is used as a normal seat and the seat storage state. Moreover, unlike the conventional case, it is not necessary to lift the seat with both hands, and the operation can be easily performed with one hand, so that a weak person such as a child or a woman can easily arrange the seat.
[0014]
【The invention's effect】
As is clear from the above description, the present invention can easily perform the folding operation of the sheet with a small force, the operation procedure is extremely simple, and the folding operation can be easily performed with only one hand. is there.
Therefore, the present invention greatly contributes to industrial development as a vehicle seat that has eliminated the conventional problems.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a front view showing a state at a neutral point in a folding step.
FIG. 3 is a front view showing a state at a neutral point in a folding step.
FIG. 4 is a front view showing a state where the seat body is folded and stored.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat main body 1a Seat back 1b Seat cushion 2 Reclining mechanism 3a 1st link 3b 2nd link 4 Spring body 5 Spring body 12 Lock release mechanism 20 Body 21 Storage part 22 Rear deck

Claims (2)

A vehicle seat in which the seat back is tilted forward toward the seat surface of the seat cushion and the seat cushion is moved to a rear storage section, and the lower portion of the seat cushion is moved downward so that the seat cushion moves rearward. The link is connected to the body by at least one pair of front and rear links of a first link and a second link, and at least one of the first link and the second link has a seat located at a neutral point where the seat weight and the resilience are balanced. A vehicle seat characterized in that a spring body for imparting resilience is incorporated. 2. The vehicle seat according to claim 1, further comprising a lock release mechanism for simultaneously releasing the seat lock and the reclining lock.

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