Vehicle seat

Abstract

To provide a vehicle seat having high usability.SOLUTION: A vehicle seat comprises: a seat cushion 2 located in front of a rear wheel house 11 of a vehicle, for supporting buttocks and thighs of an occupant; a seat back 3 for supporting a back of the occupant; a reclining mechanism part 4 for tilting the seat back 3 relative to the seat cushion 2; and a raising / lowering mechanism part 5 which can raise / lower the seat cushion 2 in a vertical direction relative to a vehicle floor surface, and which, when seat arrangement is being changed by the reclining mechanism part 4 toward a backward brought-down state where the seat back 3 is brought down backward, raises the seat cushion 2 in the vertical direction in conjunction with tilting of the seat back 3 into the backward brought-down state so that the seat back 3 is located above the rear wheel house 11 so as to avoid interference with the rear wheel house 11. The seat cushion or the seat back comprises: a shade storage part capable of storing a shade; and an engagement part engaged with part of the shade.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle seat for a rear seat of a vehicle. [Background technology]

[0002] In a vehicle seat for the rear seat of a vehicle, it is known that the seat back of the rear seat can be tilted backward to be as nearly horizontal as possible (hereinafter, simply referred to as a flat state) (see, for example, Patent Document 1). By changing the seat arrangement to such a flat state, it becomes possible to use the interior of the vehicle more spaciously. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 2-76533 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, when attempting to fold back the rear seat backs, a part of the seat back (side back 13 in Figures 1 and 2 of Patent Document 1) interferes with the rear wheel house of the vehicle (tire house 4 in Figures 1 and 2 of Patent Document 1). For this reason, in Patent Document 1, only this part and the remaining part of the seat back that can be separated (center back 12 in Figures 1 and 2 of Patent Document 1) can be put into a flat state. In other words, in Patent Document 1, the entire seat back cannot be put into a completely flat state, and the interior of the vehicle cannot be used to the maximum extent.

[0005] Thus, further ingenuity is required to improve the usability of vehicle seats for the rear seats of a vehicle.

[0006] In consideration of the above circumstances, the present invention aims to realize a vehicle seat that is highly usable, and in particular, has an object to provide a vehicle seat that allows for wide use of the rear space of the vehicle even after the seat arrangement is changed to a completely flat state. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a vehicle seat, comprising: A vehicle seat for a rear seat of a vehicle, a seat cushion located in front of a rear wheel house of the vehicle and supporting the buttocks and thighs of an occupant; A seat back that supports the back of the occupant; a reclining mechanism that tilts the seat back relative to the seat cushion; a lifting mechanism capable of lifting and lowering the seat cushion along a vertical direction relative to a vehicle floor surface, the lifting mechanism raising the seat cushion along the vertical direction in conjunction with tilting of the seat back to the backward-tilted state so that the seat back is positioned above the rear wheel house avoiding interference with the rear wheel house when the seat arrangement is changed by the reclining mechanism toward the backward-tilted state in which the seat back is tilted backward, The seat cushion or the seat back, A shade storage section capable of storing a shade that functions as a partition or a sunshade in the interior of the vehicle; The shade is characterized by having an engagement portion that supports the shade by engaging with a part of the shade in an unfolded state when the shade is unfolded and used as a partition or sunshade inside the vehicle.

[0008] The invention described in claim 2 is the vehicle seat described in claim 1, The vehicle seat is arranged in a plurality of rows independent of each other along the vehicle width direction, and each of the plurality of lifting mechanisms lifts and lowers the seat cushion to be lifted and lowered independently of each other.

[0009] The invention described in claim 3 is the vehicle seat described in claim 1 or 2, the seat cushion has a cushion bank portion occupying one side of the seat cushion, the cushion bank portion being rotatable about a rear end portion of the cushion bank portion as a rotation axis separately from the remaining portion of the seat cushion excluding the cushion bank portion, The cushion bank portion has the shade storage portion.

[0010] The invention described in claim 4 is the vehicle seat described in claim 3, The shade storage section is characterized in that it is capable of storing a shade having a foldable framework as the shade. Effect of the Invention

[0011] According to the invention described in claim 1, the seat cushion has a lifting mechanism that can lift and lower the seat cushion vertically relative to the vehicle floor surface, and when the seat back is tilted backward by the reclining mechanism to change the seat arrangement, the lifting mechanism can be used to adjust the height of the seat cushion to a position where the seat back does not interfere with the rear wheel. As a result, the height of the seating surface of the seat cushion and the seating surface of the seat back can be made the same, and no step is generated. This allows the seat arrangement to be changed to a completely flat state (full flat state), and the rear space of the vehicle after the change can be used as widely as possible. For example, in the full flat state, when the shade stored in the shade storage section is expanded and a part of it is engaged with the engagement section to support the shade, the space covered by the shade can be expanded to the maximum.

[0012] According to the invention described in claim 2, the height of adjacent rear seats can be changed relatively, and for example, the height of the seat cushion can be adjusted so that the eye levels of a parent and child lying down are the same.

[0013] According to the invention described in claim 3, when the seat cushion supports the buttocks and thighs of the occupant, the cushion bank functions as an armrest on which the occupant's arms are placed, eliminating the need for a separate armrest. Furthermore, by providing a shade storage section in the cushion bank, it is not necessary to prepare a separate place to store the shade when not in use. This achieves further space saving inside the vehicle.

[0014] According to the invention described in claim 4, the presence of a skeleton stabilizes the shape of the shade when it is unfolded for use. However, although the presence of a skeleton in the shade makes the shade bulky when stored, if the skeleton is foldable and can be stored in the shade storage section, this does not affect the space saving inside the vehicle provided by the shade storage section. [Brief description of the drawings]

[0015] [Figure 1] 1 is a front view showing a schematic configuration of a vehicle seat according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic side view of the configuration of the vehicle seat in FIG. 1. [Diagram 3] 10A to 10C are diagrams illustrating the effects of the present embodiment. [Figure 4] 5 is a schematic diagram for explaining a shade storage section in the embodiment. FIG. [Diagram 5] 5 is a diagram showing a schematic view of the shade stored in the shade storage section in FIG. 4 being used in a manner surrounding an occupant in the full-flat state in FIG. 3. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be understood that the present invention is not limited to the following embodiment, and that appropriate design changes, improvements, etc. may be made based on the ordinary knowledge of a person skilled in the art without departing from the spirit of the present invention.

[0017] FIG. 1 is a diagram showing a schematic front view of the configuration of a vehicle seat 1 according to one embodiment of the present invention, FIG. 2 is a diagram showing a schematic side view of the configuration of the vehicle seat 1 of FIG. 1, and FIG. 3 is a diagram showing a schematic diagram of the effect of this embodiment.

[0018] The vehicle seat 1 is a vehicle seat for use in the rear seat of a vehicle, and includes a seat cushion 2, a seat back 3, a reclining mechanism 4, and a lifting mechanism 5.

[0019] The seat cushion 2 is located in front of the rear wheel house 11 of the vehicle, and is a part of the vehicle seat 1 that supports the buttocks and thighs of an occupant. The seat cushion 2 has a cushion main body 21 made of a cushioning material that absorbs shock when an occupant sits on it, and a cushion frame 22 made of a rigid member that supports the cushion main body 21 from the inside.

[0020] The seat back 3 is a part of the vehicle seat 1 that supports the back of the occupant. Like the seat cushion 2, the seat back 3 has a seat back main body 31 made of a cushioning material that absorbs shock, and a seat back frame 32 made of a rigid member that supports the seat back main body 31 from the inside. The seat back 3 is connected to the rear end of the seat cushion 2 via a reclining mechanism 4, which will be described later.

[0021] The reclining mechanism 4 is a part of the vehicle seat 1 that tilts the seat back 3 relative to the seat cushion 2. The reclining mechanism 4 also plays a role in connecting the seat back 3 to the rear end of the seat cushion 2.

[0022] The lifting mechanism 5 is a part of the vehicle seat 1 that can raise and lower the seat cushion 2 in the vertical direction (the up-down direction in Figs. 1 and 2) relative to the vehicle floor surface 14. When the reclining mechanism 4 changes the seat arrangement toward a reclined state in which the seat back 3 is reclined backward, the lifting mechanism 5 lifts the seat cushion 2 in the vertical direction in conjunction with the tilting of the seat back 3 toward the reclined state so that the seat back 3 is positioned above the rear wheel house 11 while avoiding interference with the rear wheel house 11. More specifically, in Fig. 2, the lifting mechanism 5 lifts the seat cushion 2 together with the seat back 3 connected to the rear end of the seat cushion 2 in the direction B in the figure in conjunction with the seat back 3 rotating in the direction A in the figure and approaching the reclined state.

[0023] In this specification, the term "backward tilted state" means that the seat back 3 is in a state close to being nearly horizontal with respect to the vertical direction. In addition, in this specification, the term "linked to the tilting to the backward tilted state" means that the seat back 3 is linked to the tilting of the seat back 3 after the seat back 3 has tilted and approached the backward tilted state to a predetermined level, in other words, after the seat back 3 has rotated to a predetermined angle with respect to the seat cushion 2. In other words, the seat cushion 2 does not start to rise only when the upward facing seat back 3 shown by the solid line in FIG. 2 is slightly tilted backward. In fact, the lifting mechanism unit 5 can lift the seat cushion 2 in the direction B while maintaining the upward posture of the seat back 3 shown by the solid line in FIG. 2 (i.e., without tilting the seat back 3).

[0024] Here, the lifting mechanism 5 is connected to the cushion frame 22 in the seat cushion 2, and the seat cushion 2 is lifted by pushing up the cushion frame 22 in the direction B in the figure using a gear mechanism (not shown) that transmits the rotational driving force of a motor or the like. As such a gear mechanism, a conventional seat height adjustment device mechanism such as those described in JP-A-2006-182039 and JP-A-2001-138780 can be used. In this case, as the above-mentioned interlocking mechanism, for example, a mechanism is considered in which, when the seat back 3 rotates beyond the above-mentioned predetermined angle, a switch of the rotational driving source such as the motor is turned on and the rotational driving force is transmitted to the gear mechanism.

[0025] In this embodiment, the lifting mechanism 5 uses such a gear mechanism, but the present invention may use a lifting mechanism using another lifting mechanism. For example, a lifting mechanism using hydraulic pressure, air pressure, or the like may be used.

[0026] In FIG. 3, the vehicle seat 1 in the seat arrangement before the seat back 3 is tilted backward, in other words, in the seat arrangement in which the seat back 3 is in an "inverted state" with respect to the vehicle floor surface 14 (or in the "normal seat arrangement"), is shown by a dotted line. Also, the vehicle seat 1 in the seat arrangement in the backward state is shown by a solid line vertically above the position of the vehicle seat 1 shown by the dotted line and above the rear wheel house 11. As the seat back 3 approaches the backward state, the seat cushion 2 rises, so that the seat back 3 can be linearly connected to the seat cushion 2 in the horizontal direction without a step while avoiding interference with the rear wheel house 11 as shown in FIG. 3. In this case, unlike Patent Document 1, the entire seat back 3 is in a completely flat state. As a result, it is possible to use the vehicle rear space 7 in the vehicle to the maximum extent so that the occupant can lie on his / her stomach in the vehicle as shown in FIG. 3, and a highly usable vehicle seat is realized.

[0027] Here, it is preferable that a plurality of vehicle seats 1 are arranged side by side independently of one another along the vehicle width direction, and that each of the plurality of lifting mechanism units 5 lifts and lowers the seat cushion 2 to be lifted and lowered independently of one another.

[0028] In this preferred embodiment, in a normal seat arrangement, the height of adjacent rear seats can be changed relatively to match the eye level of people of different builds (for example, a parent and child). Also, when placing a child seat (junior seat) on the rear seat, the height of the child seat can be directly adjusted to a desired position without having to use a separate cushion or the like to raise the child seat height.

[0029] The shade storage portion and the engagement portion of the seat cushion 2 or the seat back 3 will be described below.

[0030] FIG. 4 is a schematic diagram for explaining the shade storage section 8 in this embodiment, and FIG. 5 is a schematic diagram showing the shade 10 stored in the shade storage section 8 of FIG. 4 being used in a manner surrounding an occupant in the full flat state of FIG. 3.

[0031] In the vehicle seat 1 of this embodiment, the seat cushion 2 or the seat back 3 has a shade storage section 8 capable of storing a shade 10 shown in Fig. 5 which functions as a partition or sunshade in the vehicle interior, as shown in Fig. 4. The seat cushion 2 or the seat back 3 also has engagement sections 12, 13 which support the shade 10 by engaging with a part of the shade 10 in the unfolded state when the shade 10 is unfolded and used as a partition or sunshade in the vehicle interior, as shown in Fig. 5.

[0032] With this configuration, for example, as shown in Figure 5, when the shade 10 stored in the shade storage section 8 is unfolded in a fully flat state and a part of it is engaged with the engagement sections 12, 13 to support the shade 10, the space covered by the shade can be expanded to the maximum.

[0033] Here, as shown in FIG. 4, it is preferable that the seat cushion 2 has a cushion bank portion 6 occupying one side of the seat cushion 2, which can be separated and rotated from the remaining part of the seat cushion 2 excluding the cushion bank portion 6, with the rear end portion of the cushion bank portion 6 as a rotation axis, and that the cushion bank portion 6 has a shade storage section 8 capable of storing a shade 10 that functions as a partition or sunshade inside the vehicle.

[0034] According to this configuration, when the seat cushion 2 supports the buttocks and thighs of the occupant, the cushion bank portion 6 functions as an armrest on which the occupant's arms are placed, eliminating the need for a separate armrest. Furthermore, by providing the shade storage portion 8 in the cushion bank portion 6, it is not necessary to provide a separate place to store the shade 10 when not in use. This achieves further space saving inside the vehicle.

[0035] In addition, FIG. 4 shows, as an example, a configuration in which the seat cushion 2 (more precisely, the cushion bank portion 6 of the seat cushion 2) has a shade storage portion 8, however, in the present invention, the seat back may also have a shade storage portion.

[0036] 4, the seat cushion 2 has a bank rotation mechanism 9 that separates and rotates the cushion bank 6 from the remaining portion of the seat cushion 2 excluding the cushion bank. As the bank rotation mechanism 9, for example, a conventionally known rotation mechanism such as the reclining mechanism 4 that tilts the seat back 3 can be used.

[0037] In this case, it is preferable that the seat cushion 2 further includes a rotation position fixing mechanism for fixing the rotation position when the cushion bank portion 6 is separated from the remaining portion of the seat cushion 2 and rotated.

[0038] According to this embodiment, the posture of the cushion bank portion 6 is stabilized. In particular, the function of the cushion bank portion 6 as an armrest is improved by stabilizing the posture. Here, as the rotation position fixing mechanism, a conventionally known rotation position fixing mechanism can be adopted. For example, as shown in FIG. 4, a rotation position fixing mechanism having a locking pin 9a that is inserted into the bank portion rotation mechanism 9 to stop the rotation of the cushion bank portion 6 by the bank portion rotation mechanism 9 and a strip 9b connected to the locking pin 9a may be adopted. In this case, the locking pin 9a is inserted by the occupant to fix the rotation position of the cushion bank portion 6. Also, the strip 9b is pulled by the occupant to pull the locking pin 9a out of the bank portion rotation mechanism 9, and the fixation of the rotation position of the cushion bank portion 6 by the locking pin 9a is released, and the cushion bank portion 6 becomes rotatable.

[0039] In addition, as shown in Figures 1 and 4, it is preferable that the seat back 3 has a protruding portion 3a on the side of the seat back 3 located in the rotation direction of the cushion bank portion 6, which abuts the rotated cushion bank portion 6 and prevents further rotation of the cushion bank portion 6.

[0040] According to this embodiment, the presence of the overhanging portion 3a further stabilizes the posture of the cushion bank portion 6. In this case, the cushion bank portion 6 is rotatable in the directions of both arrows in Fig. 4 between a non-rotating state (the state of the cushion bank portion 6 shown by the dotted line in Fig. 4) in which the cushion bank portion 6 occupies one side of the seat cushion 2 in a state aligned with the remaining portion of the seat cushion 2, and a contacting state (the state of the cushion bank portion 6 shown by the solid line in Fig. 4) in which the cushion bank portion 6 abuts against the overhanging portion 3a of the seat back 3.

[0041] The overhanging portion 3a of the seat back 3 thus regulates the angular range within which the cushion bank portion 6 can be rotated, but since the seat back 3 can be tilted all the way back, the angular range within which the cushion bank portion 6 can be rotated also changes depending on the tilted state of the seat back 3. For example, in the normal seat arrangement, the cushion bank portion 6 can be rotated within an angular range of approximately 0° to 90°, but in the backward seat arrangement, the cushion bank portion 6 can be rotated within an angular range of approximately 0° to 180°.

[0042] Let's take a closer look at Shade 10 below.

[0043] As shown in Fig. 5, the seat cushion 2 has an engagement portion 12, and the seat back 3 has an engagement portion 13. In addition to these two engagement portions 12, 13, an engagement portion 16 is also provided on the ceiling of the vehicle. Although not shown in Fig. 5, a further engagement portion may be provided on the wall of the vehicle, for example, on a quarter trim box on the wall side.

[0044] In this way, by providing a plurality of engaging portions at a plurality of locations within the vehicle and engaging with parts of the shade 10, the position of the shade 10 can be stabilized. For example, the shade 10 can be used in a tent shape.

[0045] In this case, it is preferable that the shade storage section 8 is capable of storing a shade 10 having a foldable framework 15 .

[0046] According to this embodiment, the shape of the shade 10 when unfolded for use is stabilized by having the skeleton 15. However, if the skeleton 15 is present in the shade 10, the shade 10 becomes bulky when stored, but if the skeleton 15 is foldable and can be stored in the shade storage section 8, there is no impact on the space saving inside the vehicle provided by the shade storage section.

[0047] The above is a description of the embodiment of the present invention.

[0048] In the above embodiment, the vehicle seat 1 for the rear seat of a vehicle has been described, but the term "rear seat" here simply means a seat behind the driver's seat. Therefore, in the case of a vehicle in which multiple seats are lined up in the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can be applied to seats other than the rearmost seat. [Industrial Applicability]

[0049] The present invention is useful for realizing a vehicle seat with high usability. [Explanation of symbols]

[0050] 1 Vehicle seat 2 Seat cushion 3 Seat back 3a Protruding part 4 Reclining mechanism 5 Lifting mechanism 6 Cushion bank 7. Rear space of vehicle 8 Shade storage area 9. Bank Rotation Mechanism 9a Locking pin 9b Strip 11 Rear wheel house 12 Engagement part 13 Engagement part 14 Vehicle floor surface 15 Skeleton 16 Engagement part 21 Cushion body 22 Cushion Frame 31 Seat back body 32 Seat back frame

Claims

1. A vehicle seat for a rear seat of a vehicle, a seat cushion located in front of a rear wheel house of the vehicle and supporting the buttocks and thighs of an occupant; A seat back that supports the back of the occupant; a reclining mechanism that tilts the seat back relative to the seat cushion; a lifting mechanism capable of lifting and lowering the seat cushion along a vertical direction relative to a vehicle floor surface, the lifting mechanism raising the seat cushion along the vertical direction in conjunction with tilting of the seat back to the backward-tilted state so that the seat back is positioned above the rear wheel house avoiding interference with the rear wheel house when the seat arrangement is changed by the reclining mechanism toward the backward-tilted state in which the seat back is tilted backward, The seat cushion or the seat back, A shade storage section capable of storing a shade that functions as a partition or a sunshade in the interior of the vehicle; and an engagement portion that supports the shade by engaging with a part of the shade in an unfolded state when the shade is unfolded and used as a partition or sunshade inside the vehicle.

2. The vehicle seat according to claim 1 , wherein a plurality of the vehicle seats are arranged side by side independently of one another along a vehicle width direction, and each of the plurality of lifting mechanisms lifts and lowers the seat cushion to be lifted and lowered independently of one another.

3. the seat cushion has a cushion bank portion occupying one side of the seat cushion, the cushion bank portion being rotatable about a rear end portion of the cushion bank portion as a rotation axis separately from the remaining portion of the seat cushion excluding the cushion bank portion, 3. The vehicle seat according to claim 1, wherein the cushion bank portion has the shade storage portion.

4. The vehicle seat according to claim 3 , wherein the shade storage section is capable of storing a shade having a foldable framework as the shade.

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