JP2018075892A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rationally provide a lateral slide mechanism onto a vehicle seat comprising a tip-up mechanism.SOLUTION: A seat 1 having a ti-up mechanism 10 which can flip up a seat cushion 3 toward a seat back 2 side, a lateral slide mechanism 20 which can slide a seat body 1A in a lateral direction with respect to a vehicle floor F. The tip-up mechanism 10 is so configured as to flip up the seat cushion 3 in a form of lowering a rear part 3A of the seat cushion 3. The lateral slide mechanism 20 is provided in a state that a rail shape is extended in a lateral direction at a position which is overlapped on a height direction of a movement locus L of the rear part 3A when flipping up the seat cushion 3 and is arranged in a cross direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat having a tip-up mechanism that enables a seat cushion to be flipped up toward a seat back side, and a lateral slide mechanism that enables a seat body to slide in a lateral direction with respect to a vehicle floor.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration including a tip-up mechanism that enables a seat cushion to be flipped up toward a seat back side and a lateral slide mechanism that enables a seat body to slide in a lateral width direction is known. (Patent Document 1). The lateral slide mechanism is configured such that the pair of front and rear horizontal rails attached to the bottom of the seat body are slidably assembled to the pair of front and rear horizontal rails embedded on the vehicle floor. Yes.

  The vehicle seat further includes a vertical slide mechanism that allows the seat body to slide in the front-rear direction. In the vertical slide mechanism, a pair of left and right vertical upper rails attached to the bottom of the seat body slide relative to a pair of left and right vertical lower rails provided on the horizontal upper rails of the horizontal slide mechanism. It is configured to be assembled as possible.

JP 2004-291697 A

  In the above-described conventional technology, the seat cushion is flipped up so that it does not interfere with the vertical slide mechanism at the foot of the seat cushion. It is a disadvantageous structure with a high center of gravity. The present invention was devised to solve the above problems, and the problem to be solved by the present invention is to rationally arrange a lateral slide mechanism on a vehicle seat equipped with a tip-up mechanism. It is in.

  In order to solve the above problems, the vehicle seat of the present invention takes the following means.

  A first invention is a vehicle seat having a tip-up mechanism that enables the seat cushion to be flipped up toward the seat back side, and a lateral slide mechanism that enables the seat body to slide laterally with respect to the vehicle floor. It is. The tip-up mechanism is configured to flip up the seat cushion so as to lower the rear portion of the seat cushion. The lateral slide mechanism is disposed in a state in which the rail shape extends in the lateral direction at a position that overlaps with the rearward movement trajectory when the seat cushion is flipped up and is aligned in the front-rear direction.

  According to the first aspect of the present invention, the lateral slide mechanism that extends the rail shape in the lateral direction can be reasonably disposed in a height region in which the rear portion is lowered when the seat cushion is flipped up.

  The second invention is the following configuration in the first invention described above. The lateral slide mechanism is configured to have a pair of front and rear rail structures in which a lateral upper rail fixed to the seat main body side is slidably assembled to a lateral lower rail fixed to the vehicle floor side. The trajectory of the rear part of the seat cushion is sandwiched between a pair of front and rear rail structures of the lateral slide mechanism, and the rear rail structure of the lateral slide mechanism is arranged at a position behind the set position of the reclining hinge center of the seat back. It is installed.

  According to the second aspect of the invention, the rail structure on the rear side of the lateral slide mechanism can strongly receive the load in the peeling direction applied to the seat body when the front collision of the vehicle occurs.

  The third invention is the following configuration in the first or second invention described above. The vehicle seat further includes a vertical slide mechanism that allows the seat body to slide in the front-rear direction with respect to the vehicle floor between the lateral slide mechanism and the vehicle floor.

  According to the third aspect of the present invention, the vertical slide mechanism can be mounted on the vehicle floor, not on the seat body, so that a high peel prevention strength can be achieved. In addition, since the above-mentioned effect can be obtained even if the vertical slide mechanism has a so-called long slide type configuration by attaching the vertical slide mechanism to the vehicle floor, the living space can be appropriately enlarged.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a perspective view showing the state where the vehicle seat was stored and moved. It is the perspective view which expanded and represented the foot rail structure. It is a side view of a vehicle seat. FIG. 5 is a side view showing a state in which the seat cushion is flipped up from FIG. 4.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. In the following description, when directions such as front / rear, up / down, left / right, and the like are indicated, the directions shown in the drawings are indicated. As shown in FIGS. 1 to 2, the seat 1 of the present embodiment is configured as a left-side seat in the second row of an automobile provided with a three-row seat. A passenger door (not shown) is provided on the left side of the seat 1, and a right seat in the same row is provided on the right side.

  In the seat 1 described above, a seat body 1A that constitutes the seat body includes a seat back 2 that serves as a backrest portion for a seated occupant and a seat cushion 3 that serves as a seating portion. The seat back 2 and the seat cushion 3 described above are provided by being connected to a base 4 installed on the floor F of the vehicle. Specifically, the seat back 2 described above is in a state in which the lower end portions of the left and right sides thereof are connected to the above-described base 4 via recliners 5 each having a reclining adjustment function.

  Each of the above-described recliners 5 is normally held in a locked state in which the backrest angle of the seat back 2 is fixed, and is locked by operating a reclining lever (not shown) provided on the left side of the base 4. The state is released all at once. As a result of the release, each recliner 5 switches to a state in which the backrest angle of the seat back 2 can be freely adjusted in the front-rear direction around the reclining hinge center 5A whose axis is oriented in the vehicle width direction. It is supposed to be.

  The above-described seat back 2 is always in a state in which a spring biasing force in a forward direction is applied between the seat back 2 and the base 4. With the above configuration, the seat back 2 is raised to a position where it is pressed against the back of the seated occupant by operating the above-mentioned reclining lever (not shown), and the tilt angle according to the change of the tilt angle of the back Is to be adjusted.

  On the other hand, the seat cushion 3 is connected to the above-described base 4 via a tip-up mechanism 10 having a rearward raising function. In the tip-up mechanism 10 described above, as shown in FIGS. 1 and 4, the seat cushion 3 is fixed to the base 4 by a hooking structure (not shown) in a lying posture suitable for seating (not shown) ( Locked state). The above-described tip-up mechanism 10 is configured such that the above-described locked state is released by operating a tip-up lever (not shown) provided on the left side of the base 4. As a result of the release, the tip-up mechanism 10 jumps rearward by a spring biasing force (not shown) around the hinge shaft 11 facing the vehicle width direction in which the seat cushion 3 is hinge-connected to the base 4. It is supposed to be raised.

  As shown in FIG. 4, the hinge shaft 11 described above is hinged so that the intermediate portions near the rear portions 3 </ b> A on both the left and right sides of the seat cushion 3 can rotate about the same axis with respect to the base 4. It is in a connected state. As a result of the above connection, as shown in FIG. 5, the rear cushion 3 </ b> A lower than the hinge shaft 11 lowers the rear portion 3 </ b> A about the hinge shaft 11 by the flip-up rotation about the hinge shaft 11. The movement trajectory L is taken. The seat cushion 3 described above is always subjected to a spring urging force in a direction in which the seat cushion 3 is flipped up with respect to the base 4. With the above configuration, the seat cushion 3 is raised to the standing position slightly leaning forward from the upright posture toward the rear side by operating the above-described tip-up lever (not shown). .

  When the tip up lever (not shown) is operated, the lock state of each recliner 5 is also released, and the seat back 2 is lifted up by the spring biasing force (not shown). 3 is pushed down to the forward tilt position where it is overlapped with 3. By the above operations, the seat back 2 and the seat cushion 3 are in a tip-up posture state in which the seat back 2 and the seat cushion 3 are overlapped in a compact shape in the front-rear direction, and a wide empty space is formed in front and back. The seat back 2 and the seat cushion 3 described above are brought into respective positions locked by the recliners 5 and the tip-up mechanism 10 described above by pushing them back in a direction against a spring biasing force (not shown). To return to the locked state.

  By the way, as shown in FIG.1 and FIG.3, the base 4 which supports the seat back 2 and the seat cushion 3 mentioned above has the base 4 (seat main body 1A) in the vehicle width direction with respect to the vehicle floor F mentioned above. A lateral slide mechanism 20 that enables sliding and a vertical slide mechanism 30 that enables the seat body 1A to slide in the front-rear direction are connected to each other. As shown in FIG. 3, the vertical slide mechanism 30 described above includes a pair of left and right vertical lower rails 31 that are embedded on the floor F of the vehicle so as to be flush with each other and extend straight in the front-rear direction, and these vertical lower rails. 31 and a pair of left and right vertical upper rails 32 assembled in a state of being guided so as to be slidable in the front-rear direction. The vertical upper rails 32 described above are provided so as to protrude upward from the slits formed in the top plate portions with respect to the vertical lower rails 31 described above. It is set to the state assembled | attached in the shape multiplied so that it might not peel.

  Further, the horizontal slide mechanism 20 includes a pair of front and rear horizontal rails 21 extending in a straight shape in the vehicle width direction assembled in a shape bridged in the vehicle width direction from above between the vertical upper rails 32 of the vertical slide mechanism 30 described above. And a pair of front and rear horizontal upper rails 22 assembled so as to be slidably guided along the horizontal lower rails 21 in the vehicle width direction. The horizontal upper rails 22 described above are provided so as to protrude upward from the slits formed in the top plate portions with respect to the horizontal lower rails 21 described above. It is set to the state assembled | attached in the shape multiplied so that it might not peel. And the bottom part of the base 4 mentioned above is made into the state assembled | attached integrally to the upper part of each said horizontal upper rail 22 by bolt fastening.

  In addition, each horizontal lower rail 21 described above is connected to each of the vertical slide mechanisms 30 described above via each bracket B bridged from the lower side so as to integrally connect the left and right end portions in the front-rear direction. The bolts are integrally fastened and assembled on the vertical upper rail 32 on each side. By being assembled via each bracket B, the vertical slide mechanism 30 described above is in a unitized state in which the vertical upper rails 32 are assembled to the vertical lower rails 31 with respect to the vehicle floor F in advance. From the installed state, the horizontal slide mechanism 20 can be easily and collectively assembled into a united state in which the horizontal upper rails 22 are combined with the horizontal lower rails 21 and integrated with the brackets B. ing.

  The horizontal slide mechanism 20 and the vertical slide mechanism 30 described above are normally held in a state in which the slides of the horizontal upper rails 22 and the vertical upper rails 32 are locked by a lock mechanism (not shown) assembled to each. The horizontal slide mechanism 20 and the vertical slide mechanism 30 described above are individually unlocked by operating a horizontal slide lever or a vertical slide lever (not shown) provided on the left side of the base 4 described above. Thus, the horizontal upper rails 22 can be slid and the vertical upper rails 32 can be slid. Further, the horizontal slide mechanism 20 and the vertical slide mechanism 30 described above are configured such that the locked state of both slides is released simultaneously by operating the above-described tip-up lever (not shown).

  With the above-described configuration, the seat 1 is tilted forward so that the above-described seat cushion 3 is flipped up and the seat back 2 overlaps with the above-described seat cushion 3 by operating the above-described tip-up lever (not illustrated). In addition to being switched to the tip-up posture that has been tilted down, the slide lock states of the horizontal slide mechanism 20 and the vertical slide mechanism 30 described above are simultaneously released. Thereby, as shown in FIG. 2, the seat 1 is configured to slide the seat body 1 </ b> A in the tip-up posture state forward to close the space between the front seat and away from the passenger door. By sliding in the vehicle width direction toward the right seat, the space between the passenger door and the rear seat can be switched to a wide open state.

  In the vertical slide mechanism 30 described above, the vertical lower rails 31 embedded so as to be exposed on the floor F of the vehicle are described above the seat body 1A beyond the adjustment range of the seating position in the front-rear direction. It is a long slide type configuration that can be slid largely to a position where it is almost in contact with the back of the front seat in the tip-up position. Each vertical lower rail 31 having the above-described configuration is configured so that the vertical upper rail 32 does not protrude in the front-rear direction regardless of which slide position the vertical upper rail 32 is located on. It is possible to exhibit a high anti-peeling strength that is not peeled off. Further, each of the vertical lower rails 31 is configured to be able to slide greatly to the rear side to a position where the seat body 1A is substantially applied to the rear seat.

  By the way, as shown in FIG. 5, the above-described lateral slide mechanism 20 has the rail structures 20A and 20B composed of the combination of the pair of front and rear lateral rails 21 and the lateral upper rails 22 arranged at the following positions, respectively. Has been. That is, each rail structure 20A, 20B of the lateral slide mechanism 20 has a movement locus L in which the rear portion 3A of the seat cushion 3 is lowered around the hinge shaft 11 of the tip-up mechanism 10 by the operation of the tip-up lever (not shown) described above. It overlaps in the height direction and is arranged at a position aligned with the movement locus L in the front-rear direction so as to sandwich the movement locus L in the front-rear direction. Specifically, the rear rail structure 20 </ b> B is in a state of being disposed at a position on the rear side of the set position of the reclining hinge center 5 </ b> A of the seat back 2.

  With the above arrangement, the horizontal slide mechanism 20 is arranged so as to overlap the height region where the rear portion 3A is lowered when the seat cushion 3 is flipped up, and the movement locus L described above is the same as the arrangement of the horizontal slide mechanism 20. It can be provided at a low position where the center of gravity is lowered without being provided at a high position so as not to overlap in the height direction. Further, the rear rail structure 20B is arranged at a position rearward of the set position of the reclining hinge center 5A, so that the rear rail structure 20B allows the seat body 1A to be moved to the seat body 1A when a front collision of the vehicle occurs. The load in the peeling direction to be applied can be strongly received.

  In summary, the sheet 1 of the present embodiment has the following configuration. That is, the tip-up mechanism (tip-up mechanism 10) that enables the seat cushion (seat cushion 3) to be flipped up toward the seat back (seat back 2) side, and the seat body (seat body 1A) are placed on the vehicle floor (floor F). ) Is a vehicle seat (seat 1) having a lateral slide mechanism (lateral slide mechanism 20) that is slidable in the lateral direction (vehicle width direction).

  The tip-up mechanism (tip-up mechanism 10) is configured to spring up the seat cushion (seat cushion 3) so as to lower the rear part (rear part 3A) of the seat cushion (seat cushion 3). Position where the lateral slide mechanism (lateral slide mechanism 20) overlaps with the movement locus (movement locus L) of the rear portion (rear portion 3A) when the seat cushion (seat cushion 3) is flipped up in the height direction and is aligned in the front-rear direction. The rail shape is extended in the lateral direction (vehicle width direction).

  By adopting such a configuration, the lateral slide mechanism (lateral slide mechanism 20) that extends the rail shape in the lateral direction (vehicle width direction) can be used as a rear part (rear part 3A) when the seat cushion (seat cushion 3) is flipped up. Can be reasonably overlaid in the height region where the height is lowered.

  In addition, a horizontal slide mechanism (horizontal slide mechanism 20) is fixed to a seat main body (seat main body 1A) side with respect to a horizontal lower rail (horizontal lower rail 21) fixed to the vehicle floor (floor F) side. The upper rail 22) has a pair of rail structures (rail structures 20A and 20B) that are slidably assembled in the lateral direction (vehicle width direction) in a state in which the upper rail 22 is prevented from peeling in the height direction.

  The movement locus (movement locus L) of the rear part (rear part 3A) of the seat cushion (seat cushion 3) is sandwiched between a pair of front and rear rail structures (rail structures 20A, 20B) of the transverse slide mechanism (lateral slide mechanism 20), The rear rail structure (rail structure 20B) of the lateral slide mechanism (lateral slide mechanism 20) is disposed at a position behind the set position of the reclining hinge center (reclining hinge center 5A) of the seat back (seat back 2). Has been.

  With this configuration, the rail structure (rail structure 20B) on the rear side of the lateral slide mechanism (lateral slide mechanism 20) is hung on the seat body (seat body 1A) when a frontal collision of the vehicle occurs. The load in the peeling direction can be strongly received.

  The vehicle seat (seat 1) further has a seat body (seat body 1A) placed between the lateral slide mechanism (lateral slide mechanism 20) and the vehicle floor (floor F) with respect to the vehicle floor (floor F). It has a vertical slide mechanism (vertical slide mechanism 30) that can slide in the front-rear direction.

  As described above, when the vertical slide mechanism (vertical slide mechanism 30) is attached to the vehicle floor (floor F) rather than the seat main body (seat main body 1A), the seat main body (sheet main body 1A) is attached to the side. Compared with (when the horizontal slide mechanism 20 and the vertical slide mechanism 30 are disposed in the opposite direction in the height direction), a configuration capable of exhibiting high peeling prevention strength can be obtained. Further, by providing the vertical slide mechanism (vertical slide mechanism 30) on the vehicle floor (floor F) side, the above effect can be obtained even if the vertical slide mechanism (vertical slide mechanism 30) is of a so-called long slide type configuration. As a result, the living space can be expanded appropriately.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the configuration of the vehicle seat of the present invention can be widely applied to vehicles used for various vehicles such as vehicles other than automobiles such as railways, airplanes, and ships.

  Further, the lateral slide mechanism is not necessarily limited to having a pair of rail structures in front and rear, and may have only one. In addition, when the rail structure is composed of a pair of front and rear, the lateral slide mechanism overlaps the rearward movement trajectory when the seat cushion is flipped up in the height direction and is aligned at the front and rear direction. It may be arranged. In addition, the vehicle seat may be configured not to include the vertical slide mechanism but to be slidable only in the horizontal direction by the horizontal slide mechanism.

  The tip-up mechanism is not limited to a structure in which the seat cushion is flipped up by rotation around a single axis, but may be a structure in which the seat cushion is flipped up by rotation other than a single axis, such as a four-bar linkage mechanism or a slider link mechanism. In addition, the tip-up mechanism is a type in which the seat back is not tilted to the forward tilted position and is moved forward only to the upright position, or the seat back is flipped back to the position where only the seat cushion is overlapped with the seat back. It may be configured as described above. Further, the base point of the seat cushion is not limited to a position closer to the rear side than the center in the front-rear direction of the seat cushion, and may be set near the center or a position closer to the front side than the center. Even in such a configuration, the seat cushion can be flipped up so as not to interfere with the vehicle floor by taking a configuration in which the seat cushion is lifted up while being lifted.

1 seat (vehicle seat)
DESCRIPTION OF SYMBOLS 1A Seat main body 2 Seat back 3 Seat cushion 3A Rear part 4 Base 5 Recliner 5A Reclining hinge center 10 Tip-up mechanism 11 Hinge shaft 20 Horizontal slide mechanism 20A Rail structure 20B Rail structure 21 Horizontal lower rail 22 Horizontal upper rail 30 Vertical slide mechanism 31 Vertical lower rail 32 Vertical upper rail B Bracket L Movement trajectory F Floor (vehicle floor)

Claims (3)

A vehicle seat having a tip-up mechanism that enables the seat cushion to be flipped up toward the seat back side, and a lateral slide mechanism that enables the seat body to slide laterally with respect to the vehicle floor,
The tip-up mechanism is configured to spring up the seat cushion in a form that lowers the rear part of the seat cushion,
For a vehicle in which the lateral slide mechanism is disposed in a state where the rail shape extends in the lateral direction at a position that overlaps with the movement locus of the rear portion when the seat cushion is flipped up and is aligned in the front-rear direction. Sheet. The vehicle seat according to claim 1,
The lateral slide mechanism is configured to have a pair of front and rear rail structures in which a lateral upper rail fixed to the seat body side is slidably assembled to a lateral lower rail fixed to the vehicle floor side,
The movement path of the rear part of the seat cushion is sandwiched between a pair of front and rear rail structures of the lateral slide mechanism, and the rear rail structure of the lateral slide mechanism is behind the set position of the reclining hinge center of the seat back A vehicle seat disposed at the position of. The vehicle seat according to claim 1 or 2,
Furthermore, the vehicle seat which has a vertical slide mechanism which enables the said seat main body to slide to the said vehicle floor in the front-back direction between the said horizontal slide mechanism and the said vehicle floor.

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