JP2013086572A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a storage function of a vehicle seat including a seat back and a seat cushion.SOLUTION: The vehicle seat (front passenger seat) includes the seat back 2 and the seat cushion 3. The seat back 2 is axially connected in a forward and backward rotatable manner to a base member 4 (bottom plate 8), which is provided on a floor F, by a reclining device. The seat cushion 3, which has its back end axially connected in a forward and backward rotatable manner to the seat back 2 via an L-shaped link and which has a front part link-connected in a forward and backward rotatable manner to the base member 4 via a front link, sinks into a lower side in such a manner as to interlock with forward folding rotation of the seat back 2, and extends a maximum folding position of the seat back 2 to the lower side. A hinge mechanism 10 for providing a space on the floor F by flipping up the base member 4 to the inside of a vehicle from on the floor F is set between the base member 4 and the floor F.

Description

  The present invention relates to a vehicle seat. Specifically, the present invention relates to a vehicle seat provided with a seat back and a seat cushion.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration including a tilt-down mechanism in which a seat cushion sinks downward and the entire seat is compactly folded downward in conjunction with an operation of moving the seat back forward is known. (Patent Document 1).

JP 2010-149822 A

  In the prior art described in Patent Document 1, the vehicle seat can be compactly folded downward, but the vehicle seat itself protrudes on the floor, so that this problem can be solved. It would be desirable if there was an extension of the storage function. The present invention has been developed to achieve the above object, and a problem to be solved by the present invention is to extend the storage function of a vehicle seat.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
1st invention is a vehicle seat provided with a seat back and a seat cushion. The seat back is provided in a state of being axially coupled to a base member provided on the floor so as to be able to rotate back and forth. The seat cushion is pivotally connected to the seat back so that it can rotate back and forth, and the front is linked to the base member so that it can rotate back and forth via a link member. Then, the link member is sunk downward while being tilted, and the maximum tilting position of the seat back is expanded downward. A hinge mechanism is set between the base member and the floor so that the base member can be flipped up from the floor in any of the front, rear, left and right directions to make a space on the floor.

  According to the first aspect of the invention, the seat cushion sinks downward in conjunction with the forward rotation of the seat back, and the maximum retracted position of the seat back is expanded downward. By tilting the back forward, the seat back and the seat cushion can be stored in a compactly folded state at a position where the seat back and the seat cushion are sunk downward. In addition, since the hinge mechanism is set between the base member and the floor, the above-described compactly folded vehicle seat is further flipped up from the floor to store the space on the floor. be able to. In this way, in addition to the storage function of sinking the vehicle seat downward and compactly folding it, the function of allowing the stored vehicle seat to be further raised from the floor and stored more compactly is set. Thus, the storage function of the vehicle seat can be suitably expanded.

  According to a second invention, in the first invention described above, the direction in which the base member is flipped up by the hinge mechanism is set in a direction toward the adjacent seat adjacent to the vehicle seat.

  According to the second aspect of the invention, the vehicle seat that is flipped up can be caused to function as a lateral wall of the adjacent seat by setting the jumping direction of the vehicle seat toward the adjacent seat. Thus, for example, when an object such as a bicycle that falls down on the floor is placed on the floor, the raised vehicle seat becomes a lateral wall, and the bicycle is placed on the adjacent seat. You can guard against falling down.

  A third invention has the following configuration in the first or second invention described above. The hinge mechanism is arranged and set so that the center of rotation comes to the edge of the base member on the flip-up direction side. A torsion spring that applies a rotational biasing force in a direction in which the base member is flipped up is set on the hinge mechanism. At the edge of the base member opposite to the flip-up direction, a lock mechanism is set to hold the base member in a state of being normally engaged with the floor and to release the engaged state when the base is flipped up. By releasing the lock of the lock mechanism, the base member is flipped up from the floor with the biasing action of the torsion spring.

  According to the third aspect of the invention, the hinge mechanism is set so that the center of rotation comes to the edge of the base member on the flip-up direction side, so that the vehicle seat can be flipped up so as not to hit the floor. it can. In addition, a torsion spring that urges the spring in the flip-up direction is set in the hinge mechanism, and a lock mechanism that keeps the base member engaged on the floor is set in the normal state. Thus, the vehicle seat can be simply raised with the biasing action of the torsion spring.

1 is a perspective view illustrating a schematic configuration of a vehicle seat according to Embodiment 1. FIG. It is the perspective view which showed the state which flipped up the vehicle seat to the side. It is the top view which showed the seat layout of the whole vehicle interior. It is a side view of a vehicle seat. It is the side view which showed the state which tilted down the vehicle seat. It is a front view of a vehicle seat. Another embodiment: A plan view showing a seat layout of the entire interior of the vehicle.

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

  First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat of the present embodiment is configured as a passenger seat 1P of an automobile, and includes a seat back 2 that serves as a backrest for a seated occupant and a seat cushion 3 that serves as a seating portion. I have. As shown in FIGS. 2 to 3, the passenger seat 1 </ b> P is configured such that when the seat is not used, the seat back 2 is tilted forward so that the seat cushion 3 is depressed downward together. The tilt-down mechanism that can be stored in a state of being compactly folded down in conjunction with this, and the entire front passenger seat 1P that has been folded down, are further laterally directed toward the driver seat 1D on the adjacent side. And a space-up mechanism that allows the space on the floor F to be widened by jumping up. Here, the passenger seat 1P corresponds to the “vehicle seat” of the present invention, and the driver seat 1D corresponds to the “neighboring seat” of the present invention. Hereinafter, the configuration of the passenger seat 1P will be described in detail.

  As shown in FIG. 1, the seat back 2 has its left and right side lower end portions stopped against a pair of left and right base members 4 provided on a bottom plate 8 installed on a vehicle floor F, respectively. It is connected via a reclining device 5 that functions as a possible rotating shaft device. Here, each base member 4 is provided in a state of being integrally coupled to the upper part of a pair of left and right slide devices 7 provided on the bottom plate 8 via a support bracket 7C2.

  More specifically, each of the reclining devices 5 is provided between the lower ends of the left and right sides of the seat back frame 2F, which is assembled in an inverted U-shape that forms the skeleton of the seat back 2, and the base members 4, respectively. Thus, they are in a state where they are axially coupled so as to be rotatable relative to each other. As a result, the seat back 2 is in a state in which the backrest angle can be adjusted and moved with respect to each base member 4 as being pivotally supported around the central axis 5R of each reclining device 5 so as to be able to rotate back and forth. ing. Each of the reclining devices 5 is normally held in a state (locked state) in which the rotation of the seat back 2 is locked by a rotation stop structure (lock structure) provided therein. As a result, the seat back 2 is normally held in a state in which the backrest angle is fixed.

  The locked state of the reclining device 5 is released by an operation of pulling up the release lever 5A provided on the side of the seat cushion 3 outside the vehicle. Specifically, operation shafts 5B for releasing the locked state of each reclining device 5 by rotation are inserted in the center of each reclining device 5 in the axial direction, and each operation shaft 5B is connected to a connecting rod 5C. Thus, they are integrally coupled in the rotational direction. A release lever 5A is integrally coupled to an outer end portion of the operation shaft 5B disposed on the vehicle outer side among the operation shafts 5B. By performing a lifting operation of the release lever 5A, The operation shafts 5B are simultaneously operated to rotate, and the locked state of each reclining device 5 is released. In addition, since the basic structure of each reclining apparatus 5 is the same as what was disclosed by literature, such as Unexamined-Japanese-Patent No. 2011-116303, the specific description shall be abbreviate | omitted.

  The front part of the right and left sides of the seat cushion 3 is linked to the upper part of the pair of left and right slide devices 7 provided on the above-described bottom plate 8 via the front link 3A. It is in a supported state. Here, the front link 3 </ b> A corresponds to a “link member” of the present invention. Further, the rear portion of the seat cushion 3 is in a state in which both left and right side portions are rotatably connected to the both side portions of the seat back 2 described above. Specifically, the seat cushion 3 is provided with a plate-like suspension bracket 3F1 welded to a front frame portion of a steel cushion pipe seat cushion frame 3F assembled in a U-shape in plan view that forms the skeleton thereof. The upper end portions of the front links 3A are axially coupled to the left and right side portions of the suspension bracket 3F1 so as to be able to rotate back and forth by the coupling shaft 3A1.

  In addition, the lower end portion of each front link 3A is in a state of being axially coupled to each of the L-shaped support brackets 7C1 coupled to the upper part of each slide device 7 so as to be able to rotate back and forth by a coupling shaft 3A2. Yes. In addition, the rear lower end portions of the left and right sides of the seat cushion frame 3F are integrally joined to the front lower end portions of the L-shaped links 3B formed in an L shape. Each end on the upper rear side of the link 3B is axially connected to the outer side of the left and right side frame parts of the seat back frame 2F so as to be able to rotate back and forth by the connecting shaft 3B1. Thereby, the seat cushion 3 is normally in a state in which the rear end portion is suspended by the seat back 2, and the arrangement position thereof is fixed by the seat back 2 in which the backrest angle is normally fixed. It is held as a state.

  As shown in FIGS. 4 to 5, the seat cushion 3 is released by releasing the fixed state of the backrest angle of the seat back 2 by each of the reclining devices 5 and tilting the seat back 2 forward. In conjunction with the operation, it operates to sink downward. Specifically, the seat cushion 3 is moved in such a manner that the seat back 2 is pushed forward by the L-shaped links 3B described above, so that the front links 3A are moved forward. It operates to sink into the front lower side in a manner of falling down. By the depression operation of the seat cushion 3, the maximum depression position at which the seat back 2 can be lowered is widely expanded downward, and the seat back 2 is placed on the upper surface portion of the seat cushion 3 sunk below. It is designed to be pushed forward greatly to the overlapping position. Thus, the seat back 2 and the seat cushion 3 are folded on the bottom plate 8 on the floor F in a compact shape with little protrusion from the bottom plate 8.

  Here, a spiral spring 6 that applies a biasing force in a direction to always rotate the front link 3A to the connecting shaft 3A2 that connects the lower portion of each front link 3A and the support bracket 7C1. Are attached to each. Specifically, each connecting shaft 3A2 is in a state where it is integrally coupled to each support bracket 7C1, and the lower portion of each front link 3A is rotatably supported, and the connecting shaft 3A2 The inner end of each spiral spring 6 is hooked and fixed. The outer end of each spiral spring 6 is in a state of being hooked and fixed to a hook pin 3A3 protruding from the middle lower part of each front link 3A. By setting the spiral spring 6, the seat back 2 is always in a state in which an urging force in a direction of being tilted forward is applied to the seat back 2. The back 2 is pushed forward by energization.

  Here, as shown in FIG. 1, the left and right side portions of the seat cushion 3 are provided with resin shields 3S that cover the lower spaces on both sides from the outside. With these shields 3S, the internal parts such as the front link 3A and the spiral spring 6 described above are covered so as not to be exposed to the outside. The slide device 7 provided in a pair of left and right on the bottom plate 8 includes a lower rail 7A integrally connected to the bottom plate 8, and an upper rail 7B assembled to each lower rail 7A so as to be slidable back and forth. Each upper rail 7B is provided with a lock mechanism (not shown) that locks the slide of each upper rail 7B by engaging with each lower rail 7A. The above-described support brackets 7C1 and 7C2 are integrally provided on the upper portion of each upper rail 7B. The basic structure of the slide device 7 is the same as that disclosed in a document such as Japanese Patent Application Laid-Open No. 2010-221935, and a specific description thereof will be omitted.

  As shown in FIGS. 1, 2, and 6, between the edge of the bottom plate 8 on the vehicle outer side and the floor F, there is a lock mechanism 9 that engages and disengages the bottom plate 8 with the floor F. Is provided. Further, a hinge mechanism 10 is provided between the edge of the bottom plate 8 on the vehicle inner side and the floor F so that the bottom plate 8 is hingedly connected to the floor F toward the vehicle inner side. The lock mechanism 9 includes a lock device 9A provided at two positions on the floor F and two positions on the bottom surface of the bottom plate 8 as members engaging with the lock device 9A. And a U-shaped striker 9 </ b> B provided so as to project.

  Each locking device 9A includes a hook mechanism that locks the striker 9B by being pushed down so that the striker 9B is dropped from above, and is normally hooked and locked by the striker 9B. Is held. The state in which these lock devices 9A are entangled with the striker 9B is unlocked by lifting the release lever 9A1 provided on the floor F. By this release operation, each lock device 9A is again switched to a lockable state (standby state) that can be locked by pushing each striker 9B. Note that the basic structure of the locking device 9A is the same as that disclosed in a document such as Japanese Patent Application Laid-Open No. 2007-320468, and a specific description thereof will be omitted.

  The hinge mechanism 10 includes a fixed side bracket 11 that is integrally coupled on the floor F, a movable side bracket 12 that is integrally coupled to the bottom surface of the bottom plate 8, and the movable side bracket 12 that rotates to the fixed side bracket 11. It has a hinge shaft 13 that is pivotally connected, and four spiral springs 14 that apply a rotational biasing force in the flip-up direction to the movable bracket 12. These spiral springs 14 are fixed with an inner end thereof being hooked and fixed to a spring hook shaft 15 integrally coupled to the fixed bracket 11, and an outer end portion extending from the movable bracket 12. The spring hooking portion 12A is fixed by being hooked. The spring hook shaft 15 is disposed at a lower position outside the vehicle than the hinge shaft 13 in the fixed bracket 11. Thus, the spring hook shaft 15 for hooking the spiral spring 14 is set at a location different from the hinge shaft 13, thereby providing a space for winding the spiral spring 14 around the hinge shaft 13. Even in a configuration that cannot be secured, the spiral spring 14 can be suitably hooked between the fixed bracket 11 and the movable bracket 12.

  Due to the setting of the spiral spring 14 described above, the bottom plate 8 is always in a state of being applied with an urging force that is raised from the floor F toward the inside of the vehicle. As a result, the bottom plate 8 is lifted up from the floor F together with the components of the passenger seat 1P disposed at the upper part by releasing the lock state of the lock mechanism 9 described above, and FIG. As shown in FIG. 3, the retracted state stands up like a standing wall on the inner side of the driver seat 1 </ b> D.

  As a result of the passenger seat 1P being flipped up, the passenger seat 1P that has been flipped up is arranged as a lateral wall on the inner side of the driver seat 1D. Thus, for example, when an object such as a bicycle is placed on the empty space S on the floor F vacated by the passenger seat 1P being flipped up, the assistant who has been flipped up is placed. The seat 1P serves as a horizontal wall so that the bicycle can be guarded against falling into the driver seat 1D side. The passenger seat 1P is flipped up as a result of the tilt-down operation described above so that the seat back 2 and the seat cushion 3 are sunk downward and compactly folded on the bottom plate 8. It can be flipped up in a thin state. Accordingly, the passenger seat 1P that is flipped up has a thin configuration that does not take a relatively wide width. Therefore, the passenger seat 1P is stored in a position at the side of the driver's seat 1D as a compact state that does not obstruct the vehicle interior space. It is supposed to be placed.

  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, as shown in FIG. 7, the configuration of the vehicle seat provided with the tilt-down mechanism of the present invention and the space-up mechanism by jumping up is applied to the window side seat 1Rl in the rear side seat of the second and subsequent rows of the vehicle. Then, it may be configured to jump up to the vehicle outer side (wall side), or may be configured to be applied to the central seat 1Rc so as to jump up toward the window side seat 1Rr serving as the adjacent seat. Further, the direction in which the vehicle seat is flipped up from the floor may be set to any one of the front, rear, left and right directions of the vehicle. Specifically, for example, a so-called tumble-type seat in which the rear seats in the second and subsequent rows of the vehicle are tilted down and then flipped forward and positioned as standing on the back of the front seat. Structure is mentioned.

1P Passenger seat (vehicle seat)
1D Driver's seat (adjacent seat)
1Rr Window side seat 1Rc Center seat 1Rl Window side seat 2 Seat back 2F Seat back frame 3 Seat cushion 3F Seat cushion frame 3F1 Suspension bracket 3A Front link (link member)
3A1, 3A2 connecting shaft 3A3 hook pin 3B L-shaped link 3B1 connecting shaft 3S shield 4 base member 5 reclining device 5A release lever 5B operating shaft 5C connecting rod 5R center axis 6 spiral spring 7 sliding device 7A lower rail 7C upper rail 7C bracket 7C upper rail 7C 8 Bottom plate 9 Lock mechanism 9A Lock device 9A1 Release lever 9B Striker 10 Hinge mechanism 11 Fixed bracket 12 Movable bracket 12A Spring hook 13 Hinge shaft 14 Spiral spring 15 Spring hook F Floor S Free space

Claims (3)

A vehicle seat having a seat back and a seat cushion,
The seat back is provided by being axially connected to a base member provided on the floor so as to be able to rotate back and forth,
The seat cushion is provided in a state in which a rear portion thereof is axially connected to the seat back so as to be able to rotate back and forth and a front portion is linked to the base member so as to be able to rotate back and forth via a link member. In conjunction with the forward tilt rotation, the link member is depressed while sinking downward and the maximum retracting position of the seat back is expanded downward.
A hinge mechanism is set between the base member and the floor so that the base member can be flipped up from the floor in any of the front, rear, left and right directions to make a space on the floor. Vehicle seat. The vehicle seat according to claim 1,
A vehicular seat, wherein a direction in which the base member is flipped up by the hinge mechanism is set to a direction toward an adjacent seat adjacent to the vehicular seat. The vehicle seat according to claim 1 or 2,
The hinge mechanism is arranged and set so that the center of rotation comes to the edge of the base member on the flip-up direction side, and a torsion spring is set to apply a rotational biasing force in the direction to flip up the base member to the hinge mechanism. A lock mechanism is set at the edge of the base member opposite to the flip-up direction so that the base member is normally engaged with the floor and released when the base member is flipped up. The vehicle seat, wherein the base member is flipped up from the floor with the biasing action of the torsion spring by releasing the lock of the lock mechanism.

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