JP2009285193A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle which can keep cost reduced by a simple supporting mechanism and an armrest substantially horizontal even though a seat back is turned back and forth. <P>SOLUTION: The supporting mechanism 17 is constituted of a first shaft portion 11 pivotally supporting the armrest 4 to the seat back 3 freely rotatably upward and downward, a second shaft portion 13 freely rotatably and pivotally supporting the armrest 4 at a rear side RR from the first shaft portion 11 in a using position B of the armrest 4, and a link 14 whose one end portion 14a freely rotatably and pivotally supports the second shaft portion 13 and which can slide the third shaft portion 15 back and forth moving as the seat back 3 rotates back and forth. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is such that the seat back is pivotally supported so as to be able to rotate back and forth from the neutral position where the seat back is erected by the reclining device, and the armrest is supported by the support mechanism in the storage position along the seat back. The present invention relates to a vehicle seat that is pivotally supported so as to be movable to a horizontal use position.

A conventional seat back is pivotally supported so as to be able to rotate back and forth from a neutral position erected by a reclining device, and a support mechanism is provided on the seat back so that an armrest is positioned substantially horizontally with a storage position along the seat back. There is provided a vehicle seat that is pivotally supported so as to be movable to a use position. Even if the seat back of such a vehicle seat is rotated back and forth, the armrest can be kept substantially horizontal (see, for example, Patent Document 1).
JP 9-252874 A

  However, in such a conventional technique, the support mechanism that supports the armrest must hold the parallelogram, which is complicated, which causes a cost increase. In addition, an increase in the weight of the vehicle seat makes it difficult to carry in and out the vehicle.

  The present invention has been made by paying attention to such a conventional technique. The simple support mechanism can reduce the cost and can keep the armrest substantially horizontal even when the seat back is rotated back and forth. A vehicle seat that can be used is provided.

  According to the first aspect of the present invention, the seat back is pivotally supported so as to be able to rotate back and forth from a neutral position where the seat back is erected by the reclining device, and an armrest is provided along the seat back by a support mechanism. In a vehicle seat that is pivotally supported so as to be movable between a storage position and a substantially horizontal use position, the support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back in a vertically rotatable manner. A second shaft portion rotatably supported on the armrest on the rear side of the first shaft portion at the use position of the armrest, and one end portion rotatably supported on the second shaft portion. In addition, the third shaft portion, which moves as the seat back rotates in the front-rear direction, is configured by a link that can slide back and forth.

  In the invention according to claim 2, the seat back is pivotally supported so as to be able to rotate back and forth from a neutral position where the seat back is erected by the reclining device, and an armrest is stored along the seat back by a support mechanism in the seat back. In the vehicle seat that is pivotally supported so as to be movable between a position and a substantially horizontal use position, the support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back so as to be rotatable up and down. A second shaft portion rotatably supported on the armrest on the rear side of the first shaft portion in the use position of the armrest, and one end portion rotatably supported on the second shaft portion; It is characterized by comprising a link formed by engaging the other end portion that can slide the third shaft portion that moves as the seat back rotates in the front-rear direction.

  Invention of Claim 3 is a vehicle seat of Claim 1 or Claim 2, Comprising: The other end part of the said link WHEREIN: The position which the said seat back inclined last, and the said seat back inclined forward most It is characterized in that a long hole is formed, which is the terminal portion of the third shaft portion.

  According to the first aspect of the present invention, the support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back so as to be vertically rotatable, and a rear portion of the armrest that is behind the first shaft portion at the use position of the armrest. A second shaft portion rotatably supported on the armrest on the side, and one end portion rotatably supported on the second shaft portion and moving as the seat back rotates in the front-rear direction. The third shaft part is composed of a link that can slide back and forth, so that the cost can be reduced by a simple support mechanism and the armrest can be omitted even if the seat back is rotated back and forth. Can be kept level.

  According to a second aspect of the present invention, the support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back so as to be vertically rotatable, and a rear portion of the armrest that is behind the first shaft portion at the use position. A second shaft portion rotatably supported on the armrest on the side, and one end portion rotatably supported on the second shaft portion and moving as the seat back rotates in the front-rear direction. Since the third shaft portion is formed by a link formed by engaging the other end portion that can slide, the cost can be reduced by a simple support mechanism and the seat back can be rotated back and forth. Even so, the armrest can be kept substantially horizontal.

  According to the invention of claim 3, the other end portion of the link has a length at which the position at which the seat back is tilted last and the position at which the seat back is tilted forward is the most terminal portion of the third shaft portion, respectively. Since the hole is formed, the armrest can be securely moved by sliding between one end and the other end of the elongated hole with respect to the third shaft portion according to the tilted position of the seat back. It can be held at a substantially horizontal position.

  The purpose of the support mechanism is to provide a vehicle seat that can reduce the cost by a simple support mechanism and can keep the armrest substantially horizontal even if the seat back is rotated back and forth. A first shaft portion pivotally supported on the seat back and a second shaft portion pivotally supported on the armrest on the rear side of the first shaft portion at the use position of the armrest; One end portion is pivotally supported on the second shaft portion, and the third shaft portion, which is moved as the seat back is rotated in the front-rear direction, is configured to be slidable back and forth. That was realized.

[Example]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a seat of an automobile as a “vehicle”. The seat 1 may be a driver seat, a passenger seat, or a rear seat.

  The seat 1 includes a seat cushion 2 and a seat back 3, and the seat back 3 is shown in FIG. 6 by a reclining device (not shown) fixed to the seat cushion 2 and the seat back 3. It is pivotally supported so that it can move from the neutral position provided to the position rotated to the front side FR and the position rotated to the rear side RR shown in FIGS. In the seat back 3, the support mechanism 17 moves the storage position A (see FIGS. 3 to 5) in which the tip of the armrest 4 faces the upper UP, and the tip of the armrest 4 moves from the storage position A to the lower LWR. Thus, it is pivotally supported so as to be movable to a substantially horizontal use position B (see FIGS. 6 to 10). As shown in FIG. 1, the storage position A is a state in which the armrest 4 is along the seat back 3. Reference numeral 5 shown in FIGS. 1 and 2 is a headrest supported by the seat back 3. Reference numeral 25 denotes a shaft portion serving as a rotation center when the seat back 3 is rotated forward and backward by the reclining device.

  The seat back 3 covers a pipe-shaped frame 7 to which the reclining device is fixed, a flat plate-shaped hood 8 disposed on the rear side RR of the frame 7, and the frame 7 and the hood 8. The cushioning member is not formed, and a skin (not shown) covering the cushioning member is formed. The pan 8 is appropriately formed with a bead for reinforcement.

  The armrest 4 includes a closed-loop metal armrest body 9 that is long in the front-rear direction at the use position B, a buffer member (not shown) that covers the armrest body 9, and a skin (not shown) that covers the buffer member. Being done.

  A support member 23 shown in FIG. 4 is fixedly provided on the left side (right side of FIG. 4) of the armrest body 9, and a base portion of the support member 23 is a fourth shaft (not shown) on the pan 8 of the seat back 3. It is rotatably supported by the part.

  The support mechanism 17 includes a first shaft portion 11 that pivotally supports the right side (left side in FIG. 4) of the armrest 4 on the seat back 3 so as to be rotatable up and down, and the first of the armrest 4 at the use position B. The second shaft portion 13 is rotatably supported on the arm 10 which is the base portion of the arm rest 4 on the rear side RR from the one shaft portion 11, and the one end portion 14a is rotatably supported on the second shaft portion 13. And a link 14 formed by slidably engaging a third shaft portion 15 that pivotally supports the seat back 3 in the front-rear direction.

  After the armrest 4 is moved to the use position B by the support mechanism 17, the armrest 4 is moved to the use position B, that is, substantially horizontal, regardless of the position of the seat back 3. It can be held in position.

  At the other end portion 14b of the link 14, the position where the seat back 3 is tilted most recently as shown in FIG. 10 and the position where the seat back 3 is tilted most forwardly as shown in FIG. A long hole 16 is formed.

  The first shaft portion 11 is pivotally supported by a bracket 12 formed in a square shape in the side view of the pan 8 (that is, as shown in FIG. 6), and the second shaft portion 13 is The third shaft portion 15 has an inverted U-shaped engagement portion 24 formed on the support means 27 of the seat back 3 on the front and rear sides FR and RR. The shaft is slidably supported.

  Next, the operation of the first embodiment will be described.

  The support mechanism 17 includes a first shaft portion 11 that pivotally supports the armrest 4 on the seat back 3 in the up and down direction UP and LWR, and the first shaft portion in the use position B of the armrest 4. A second shaft portion 13 that is rotatably supported by an arm 10 that constitutes the armrest 4 on the rear side RR from the 11, and an end portion 14a that is rotatably supported by the second shaft portion 13; Since the third shaft portion 15 that moves as the seat back 3 rotates in either the front-rear FR or RR direction is composed of the link 14 that can slide in either the front-rear FR or RR direction, The cost of the support mechanism 17 can be reduced, and the armrest 4 can be kept in the substantially horizontal use position B even if the seat back 3 is rotated in either the front-rear direction FR or RR.

  At the other end portion 14b of the link 14, the seat back 3 is located at the terminal end of the third shaft portion 15 at the position where the seat back 3 shown in FIG. Since the elongated hole 16 is formed, it slides between one end portion and the other end portion of the elongated hole 16 with respect to the third shaft portion 15 according to the tilted position of the seat back 3, thereby ensuring In addition, the armrest 4 can be held at a substantially horizontal use position B. 7 and 8 show the tilting position of the seat back 3 in the middle from the neutral position shown in FIG. 6 to the forwardly tilted position shown in FIG.

  Since the armrest 4 is supported by the seat back 3 in such a relationship, even if a drink or a small item is placed on a cup holder (not shown) built in the armrest 4, the angle of the seat back 3 can be changed. Since the armrest 4 is held at a substantially horizontal position which is the use position B, the armrest 4 is not displaced or dropped.

  FIG. 11 illustrates only the differences of the second embodiment of the present invention from the first embodiment of the present invention.

  A fourth shaft portion (not shown) that pivotally supports the base portion of the support member 23 is rotatably supported by the first through hole 23a of the support member 23, and the rear RR of the rear RR from the first through hole 23a. The second shaft portion 13 is pivotally supported in the two through holes 23b. The second shaft portion 13 is pivotally supported by one end portion 14a of the link 14 as in the above-described embodiment.

  Next, the operation of the second embodiment will be described.

  The support mechanism 17 includes a first shaft portion 11 and a fourth shaft portion that pivotally support the armrest 4 on the seatback 3 in the up and down direction UP and LWR, and the armrest 4 at the use position B. A first shaft portion 11, a second shaft portion 13 that is rotatably supported by an arm 23 that constitutes the armrest 4 on the rear side RR from the fourth shaft portion, and a second shaft portion 13 that is rotatable. The third shaft portion 15 that is supported by the one end portion 14a and moves as the seat back 3 rotates in either the front-rear FR or RR direction can slide in the front-rear FR or RR direction. Since it is composed of the link 14, the cost can be reduced by a simple support mechanism 17, and the armrest 4 can be brought to the substantially horizontal use position B even if the seat back 3 is rotated in any of the front and rear FR and RR directions. Can keep.

  In the other end portion 14b of the link 14, the seat back 3 is formed with a long hole 16 which becomes the most terminal portion of the third shaft portion 15 at the position where the seat back 3 is inclined forward and the position where the seat back 3 is inclined most forward. Therefore, the armrest 4 can be used in a substantially horizontal manner by sliding between the one end and the other end of the long hole 16 with respect to the third shaft portion 15 according to the tilted position of the seat back 3. It can be held at position B.

  Since the armrest 4 is supported by the seat back 3 in such a relationship, even if a drink or a small item is placed on a cup holder (not shown) built in the armrest 4, the angle of the seat back 3 can be changed. Since the armrest 4 is held at a substantially horizontal position which is the use position B, the armrest 4 is not displaced or dropped.

  In the above embodiment, the vehicle seat 1 has been described as an example of the vehicle seat. However, the seat is not limited to this and may be a seat mounted on an aircraft, a rail vehicle, a vehicle, a ship, or the like.

The front view of the vehicle seat in which the armrest which concerns on 1st Example of this invention exists in a storage position. The front view of the vehicle seat in which the armrest of FIG. 1 exists in a use position. The side view which shows that the seat back of the vehicle seat of FIG. 1 is in the neutral position and the armrest is in the storage position. The perspective view which shows the frame | skeleton of the armrest of FIG. The expansion perspective view of the V section of FIG. The side view shown in the state which made the armrest of FIG. 3 the use position. The side view shown in the state which made the seat back of FIG. 6 into the substantially perpendicular position. FIG. 7 is a side view showing a state in which the seat back of FIG. 6 is tilted forward. FIG. 7 is a side view showing a state in which the seat back in FIG. 6 is tilted forward. The side view shown in the state which the seat back of FIG. 6 inclined last. The disassembled perspective view which shows the armrest frame | skeleton which concerns on the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat of vehicle as "vehicle" 2 Seat cushion 3 Seat back 4 Armrest 10, 23 Armrest base 11 First shaft portion 13 Second shaft portion 14 Link 14a Link one end portion 14b Link other end portion 15 Third shaft Part 16 Long hole 17 Support mechanism FR Front side RR Rear side UP Upper LWR Lower side A Storage position B Usage position

Claims (3)

The seat back is pivotally supported so that it can rotate back and forth from a neutral position erected by the reclining device. The seat back has a storage position along the seat back and a substantially horizontal use position by a support mechanism. In a vehicle seat that is pivotally supported so as to be movable,
The support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back so as to be vertically rotatable, and a shaft shaft that is rotatably supported on the armrest on the rear side of the first shaft portion at the use position of the armrest. A second shaft portion, and a third shaft portion that slides back and forth with one end portion pivotally supported by the second shaft portion and moving as the seat back rotates in the front-rear direction. A vehicle seat comprising a link and a possible link. The seat back is pivotally supported so that it can rotate back and forth from a neutral position erected by the reclining device. The seat back has a storage position along the seat back and a substantially horizontal use position by a support mechanism. In a vehicle seat that is pivotally supported so as to be movable,
The support mechanism includes a first shaft portion that pivotally supports the armrest on the seat back so as to be vertically rotatable, and a shaft shaft that is rotatably supported on the armrest on the rear side of the first shaft portion at the use position of the armrest. The second shaft portion, and the third shaft portion that is rotatably supported on the second shaft portion and that moves as the seat back is rotated in the front-rear direction, can be slid. A vehicle seat characterized in that the vehicle seat is constituted by a link formed by engaging the other end. The vehicle seat according to claim 1 or 2, wherein
In the other end portion of the link, a long hole is formed in which the position where the seat back is tilted last and the position where the seat back is tilted forward is the outermost terminal portion of the third shaft portion, respectively. Vehicle seat to be used.

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