Vehicle seat

Abstract

To improve stability of a cushion position and posture of a vehicle seat.SOLUTION: A vehicle seat 10 includes a rear cushion 2 and a front cushion 3, and can change a shape between a first state in which both of the rear cushion 2 and front cushion 3 become a seat part and a second state in which only the front cushion 3 becomes the seat part. The vehicle seat 10 includes a fixed frame 4 on which the rear cushion 2 is mounted and which is fixed to a vehicle body, a movable frame 5 on which the front cushion 3 is mounted, a link mechanism 6 which rotatably connects the movable frame 5 with respect to the fixed frame 4, and a connection mechanism 7 which connects the fixed frame 4 and movable frame 5 in the second state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle seat having a seat cushion that is divided in the front-rear direction of the vehicle. [Background technology]

[0002] Conventionally, there is known a vehicle seat in which the seat cushion is divided in the longitudinal direction of the vehicle and the front cushion is movable relative to the rear cushion. For example, there is known a vehicle seat in which the front cushion of the center seat disposed between the driver's seat and the passenger seat is structured to be movable up and down so that it can be used as a child seat (child seat) or an armrest. There is also known a vehicle seat in which the front cushion is deformed so as to be folded onto the rear cushion so that a normal vehicle seat can be used as a child seat (see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-030300 [Patent Document 2] JP 2019-202711 A Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of seat cushion, good stability in terms of cushion position and posture may not be obtained. For example, in Patent Document 1, the position of the front cushion is fixed by a locking mechanism attached to the link arm. Therefore, the seating load tends to concentrate on the locking mechanism, which is likely to cause deformation or damage to the locking mechanism. In Patent Document 2, the end of a wire fixed to the front cushion is engaged with the seat back, which makes it difficult to prevent the entire front cushion and seat back from wobbling or swaying.

[0005] One of the objectives of the present invention, which has been devised in light of the above-mentioned problems, is to provide a vehicle seat that can improve stability regarding the cushion position and posture. However, in addition to this objective, another objective of the present invention is to achieve an effect derived from each configuration shown in the "Description of Embodiments" described later, which cannot be obtained by conventional techniques. [Means for solving the problem]

[0006] The disclosed invention can be realized as the embodiments (application examples) disclosed below, which solve at least part of the above problems. Each embodiment from embodiment 2 onwards is an embodiment that can be selected additionally as appropriate, and each embodiment is an embodiment that can be omitted. None of the embodiments from embodiment 2 onwards discloses an embodiment or configuration that is essential to the present invention.

[0007] Aspect 1. The disclosed vehicle seat includes a seat cushion divided in the vehicle longitudinal direction, a rear cushion disposed on the rear side and a front cushion disposed on the front side, and is changeable in shape between a first state in which both the rear cushion and the front cushion serve as a seating portion and a second state in which only the front cushion serves as a seating portion. This vehicle seat includes a fixed frame to which the rear cushion is attached and fixed to the vehicle body, a movable frame to which the front cushion is attached, a link mechanism that rotatably connects the movable frame to the fixed frame, and a connection mechanism that connects the fixed frame and the movable frame in the second state.

[0008] Aspect 2. In the above aspect 1, it is preferable to have a rear divided surface formed in a surface shape that slopes downward toward the front at the front end of the rear cushion, and a front divided surface formed in a surface shape that corresponds to the rear divided surface at the rear end of the front cushion and is positioned opposite the rear divided surface in the first state.

[0009] Aspect 3. In the above aspect 2, it is preferable that the second state is a state in which the front cushion in the first state is slid upward and rearward, and the front divided surface and the rear divided surface are disposed opposite each other. Aspect 4. In the above aspect 2 or 3, it is preferable that the rear parting surface and the front parting surface are both flat surfaces.

[0010] Aspect 5. In an aspect including the aspect 1 above, it is preferable that the fixed frame has a pair of first members extending in the front-rear direction of the vehicle below both ends of the rear cushion in the vehicle width direction, and a second member connecting the pair of first members in the vehicle width direction. It is also preferable that the connection mechanism has a front connection portion provided at the rear of the movable frame, and a rear connection portion provided on the second member of the fixed frame. It is further preferable that the fixed frame and the movable frame are connected by engaging the rear connection portion with the front connection portion.

[0011] Aspect 6. In the above aspect 5, it is preferable that the rear connection portion is disposed below the seat back. Aspect 7. In the above aspect 5 or 6, it is preferable that the link mechanism is connected to the movable frame and the first member. Effect of the Invention

[0012] According to the disclosed vehicle seat, the link mechanism rotatably connects the movable frame to the fixed frame, and the connection mechanism connects the fixed frame and the movable frame in the second state, so that the second state can be stably maintained, thereby improving the stability of the cushion position and posture. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is an exploded perspective view illustrating the configuration of the vehicle seat of the present invention. [Diagram 2] (A) is a top view of the fixed frame, and (B) is a side view of the fixed frame (first state). [Diagram 3] (A) is a top view of the movable frame, and (B) is a side view thereof (first state). [Figure 4] 11 is a perspective view showing the peripheral structure of the link mechanism (second state). FIG. [Diagram 5] FIG. 4 is a side view of the vehicle seat (second state). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The disclosed vehicle seat is mounted in the passenger compartment of a vehicle. The vehicle seat is provided with a seat cushion that is divided in the front-rear direction of the vehicle. The seat cushion includes a rear cushion disposed on the rear side and a front cushion disposed on the front side. The shape of the vehicle seat can be changed between a first state in which both the rear cushion and the front cushion serve as a seating portion, and a second state in which only the front cushion serves as a seating portion. The position and number of the vehicle seats are not particularly limited.

[0015] Regarding the definition of directions in this embodiment, the front-rear direction is determined based on the forward / reverse direction of the vehicle in which the vehicle seat is installed (or the front-rear direction based on a person sitting in the vehicle seat), and the left-right direction (vehicle width direction) is determined based on the front-rear direction. The up-down direction is determined based on a state in which the vehicle is stopped on a flat road surface (or a person sitting in the vehicle seat).

[0016] [1. Configuration] [A. Overview] FIG. 1 is an exploded perspective view of a vehicle seat 10 according to an embodiment. The vehicle seat 10 is provided with a seat cushion 1 that supports the buttocks and thighs of a seated occupant from below. A seat back (not shown) can be installed near the rear end of the seat cushion 1. The seat back supports the occupant's back from behind, and is provided, for example, standing upward from the rear end of the seat cushion 1. The inclination angle (reclining angle) of the seat back relative to the seat cushion 1 may be adjustable by an inclination angle adjustment mechanism (not shown). The position (seat position) of the seat cushion 1 in the front-rear direction within the vehicle cabin may also be adjustable by a front-rear position adjustment mechanism (not shown).

[0017] 1, the seat cushion 1 is divided in the front-rear direction and has a rear cushion 2 disposed at the rear side thereof and a front cushion 3 disposed at the front side thereof. The position of the front cushion 3 is changeable relative to the rear cushion 2. The vehicle seat 10 is changeable between a first state (stored state, normal state) in which both the rear cushion 2 and the front cushion 3 serve as the seating portion, and a second state (deployed state, raised state) in which only the front cushion 3 serves as the seating portion.

[0018] In the first state, the front cushion 3 is at approximately the same height as the rear cushion 2, and is disposed adjacent to and in front of the rear cushion 2. The first state is a normal use state. In contrast, in the second state, the front cushion 3 is disposed adjacent to and in front of the rear cushion 2, at a higher position than the rear cushion 2. The second state corresponds to a state in which the front cushion 3 in the first state has been slid (translated) upward and backward. The second state is a use state suitable for seating, for example, for small passengers or children, since the seat surface is higher than in the first state.

[0019] The rear cushion 2 is formed with a rear divided surface 8, and the front cushion 3 is provided with a front divided surface 9. The rear divided surface 8 is formed in a surface shape that is inclined downward toward the front at the front end of the rear cushion 2, and is preferably formed as a flat surface. Similarly, the front divided surface 9 is formed in a surface shape corresponding to the rear divided surface 8 at the rear end of the front cushion 3, and is preferably formed as a flat surface. More preferably, in both the first state and the second state, the front divided surface 9 and the rear divided surface 8 are arranged to face each other in close proximity. Even more preferably, in both the first state and the second state, the front divided surface 9 and the rear divided surface 8 are arranged to be in surface contact with each other.

[0020] The rear cushion 2 and the front cushion 3 may be formed of a deformable material having elasticity and resilience (e.g., urethane, sponge, rubber, cotton, cloth, leather, etc.). Therefore, the rear divided surface 8 and the front divided surface 9 do not necessarily need to be formed in a planar shape in the strict sense, and do not necessarily need to be formed in a shape that makes surface contact in the strict sense. One or both of the rear divided surface 8 and the front divided surface 9 may be planar, or one or both may be curved. It is preferable that the rear divided surface 8 and the front divided surface 9 are formed so that they fit together in a moderate contact state in both the first state and the second state. The rear divided surface 8 and the front divided surface 9 do not need to be flat surfaces, and may be formed in a stepped shape, for example. In this case, the stepped shapes of the rear divided surface 8 (tread surface, riser) and the stepped shapes of the front divided surface 9 (tread surface, riser) may be set so that they fit together in both the first state and the second state.

[0021] A fixed frame 4 is provided below the rear cushion 2, and a movable frame 5 is provided below the front cushion 3. The rear cushion 2 is attached to the fixed frame 4, which is a member that supports the rear cushion 2 from below. The fixed frame 4 is fixed to the floor surface of the vehicle compartment (for example, a floor panel or a floor cross member) via, for example, a fore-aft position adjustment mechanism (not shown).

[0022] The movable frame 5 is a member to which the front cushion 3 is attached and which supports the front cushion 3 from below. The movable frame 5 is rotatably connected to the fixed frame 4 via a link mechanism 6. The link mechanism 6 is provided, for example, to connect a front portion of the fixed frame 4 to a front portion of the movable frame 5. In addition, both the fixed frame 4 and the movable frame 5 are provided with a connection mechanism 7 for connecting them so that they do not move relative to each other in the second state. The connection mechanism 7 is provided, for example, to connect a rear portion of the fixed frame 4 to a rear portion of the movable frame 5 in the second state.

[0023] [B.Fixed Frame] The structure of the fixed frame 4 will be described in detail using Figure 2. In Figure 2, the movable frame 5 and link mechanism 6 are indicated by dashed lines. Figure 2(A) is a top view of the fixed frame 4, and Figure 2(B) is a side view (first state) thereof. The fixed frame 4 is provided with a pair of first members 11, a second member 12, a first shaft portion 13, a rear connection portion 14, and a mount 15.

[0024] The first members 11 are a pair of members extending in the front-rear direction below both ends of the rear cushion 2 in the vehicle width direction. The shape of the first members 11 is formed to be substantially linear in a top view. The pair of first members 11 are arranged substantially parallel to each other in a top view with a predetermined interval in the vehicle width direction. The shape of the first members 11 in a side view is similar to a crank shape combining a rear portion arranged substantially horizontally along the floor surface of the vehicle compartment, a front portion arranged substantially horizontally at a position higher than the rear portion, and an inclined portion connecting them obliquely. The first members 11 are attached, for example, to a front-rear position adjustment mechanism (not shown) or the floor surface of the vehicle compartment.

[0025] The second member 12 is a cross member that connects the pair of first members 11 in the vehicle width direction, and is firmly fixed to each of the pair of first members 11. The shape of the second member 12 is formed to be substantially linear when viewed from above. The second member 12 extends in the vehicle width direction and is disposed substantially horizontally. The second member 12 is provided substantially horizontally so as to connect the vicinity of the rear end of each of the pair of first members 11, for example, and is disposed below the seat back.

[0026] The first shaft portion 13 is a shaft-shaped member that connects the pair of first members 11 in the vehicle width direction forward of the second members 12. The first shaft portion 13 is provided, for example, substantially horizontally so as to connect the front end portions of each of the pair of first members 11 in the vehicle width direction. The first shaft portion 13 is pin-joined to the link mechanism 6 and functions as a rotation shaft that rotatably supports the link mechanism 6. For example, a bearing (not shown) may be interposed between the first shaft portion 13 and the link mechanism 6.

[0027] The rear connection part 14 is one element of the connection mechanism 7 provided for connecting the movable frame 5 to the fixed frame 4, and is fixed to the second member 12. The rear connection part 14 is formed in a shape that engages with the front connection part 24 of the fixed frame 4 described later. The rear connection part 14 shown in FIG. 2 has a shape that combines a fixed part that is fixed to the upper end of the second member 12 and an annular part (striker part) that protrudes upward from the fixed part. The annular part is, for example, formed in an axis shape with a part of the ring extending in the vehicle width direction, and is arranged so that the direction of a straight line passing through the inside of the ring is the front-rear direction. The rear connection part 14 preferably has a structure, shape, and strength that comply with the ISO-FIX standard (international standard for child seats). The rear connection part 14 is, for example, provided in a pair on the left and right with a gap in the vehicle width direction, and is arranged so as to be hidden under the seat back.

[0028] The mount 15 is a base component for stably placing the movable frame 5 on the fixed frame 4 when the vehicle seat 10 is in the first state. The mount 15 is formed of an elastic member such as rubber or resin, and is installed at a plurality of locations on the first member 11. The mount 15 shown in FIG. 2 functions to improve the stability of the vehicle seat 10 in the first state by elastically supporting four locations of a plate 21, which will be described later. Note that in the second state, the mount 15 is out of contact with the plate 21, and therefore the connection mechanism 7 plays a role of improving the stability of the vehicle seat 10 instead of the mount 15.

[0029] [C. Movable frame] The structure of the movable frame 5 will be described in detail with reference to Figure 3. In Figure 3, the fixed frame 4 and the link mechanism 6 are indicated by dashed lines. Figure 3(A) is a top view of the movable frame 5, and Figure 3(B) is a side view (first state) thereof. The movable frame 5 is provided with a plate 21, a rib 22, an arm 23, and a front connection part 24.

[0030] The plate 21 is a portion that supports the front cushion 3 from below, and is formed in a plane that fits along the bottom of the front cushion 3. The plate 21 shown in Fig. 3 is formed in a substantially flat shape. The rigidity of the plate 21 may be increased by bending the front end and side end portions of the plate 21 downward into a flange shape.

[0031] The rib 22 is a reinforcing member fixed to the underside of the plate 21, and is formed of, for example, a strip-shaped plate material or a hollow tube material having a predetermined thickness. The rib 22 shown in Fig. 3 extends in the front-rear direction and is provided as a pair spaced apart in the vehicle width direction. The rib 22 is disposed, for example, at a position closer to the center of the vehicle seat 10 than the left and right mounts 15 when viewed from above. This further increases the rigidity of the plate 21 in the first state.

[0032] The arm 23 is a portion extending downward from the lower surface side of the plate 21, and is formed, for example, from a strip-shaped plate material having a predetermined thickness. The upper end of the arm 23 is fixed to the plate 21. A shaft-shaped second shaft portion 25 extending in the vehicle width direction is fixed to the lower end of the arm 23. The second shaft portion 25 is pin-joined to the link mechanism 6 and functions as a rotation shaft that rotatably supports the link mechanism 6. For example, a bearing (not shown) may be interposed between the second shaft portion 25 and the link mechanism 6.

[0033] The front connection part 24 is one element of the connection mechanism 7 provided for connecting (locking) the movable frame 5 to the fixed frame 4, and is fixed to the plate 21. The front connection part 24 is formed in a shape that engages with the rear connection part 14. The front connection part 24 shown in Fig. 3 has a shape that combines an engagement part into which an annular part (striker part) included in the rear connection part 14 is slidably inserted, and a latch that engages the annular part so that the annular part is held inside the engagement part. The latch is biased in a direction that holds the annular part inside the engagement part.

[0034] In addition, by operating an unlocking mechanism (not shown), the latch is released, and the connection (lock) between the fixed frame 4 and the movable frame 5 is released. The unlocking mechanism is provided on the front surface or side surface of the front cushion 3, for example. Like the rear connection part 14, the front connection part 24 preferably has a structure, shape, and strength that comply with the ISO-FIX standard. The front connection parts 24 are provided, for example, in a pair on the left and right sides spaced apart in the vehicle width direction, and are connected to the rear connection part 14 at a position hidden under the seat back. By connecting the front connection parts 24 to the rear connection parts 14, the stability of the vehicle seat 10 in the second state is improved.

[0035] [D. Link mechanism] The structure of the link mechanism 6 will be described in detail with reference to Figures 4 and 5. Figure 4 is a perspective view (second state) showing the peripheral structure of the link mechanism 6, and Figure 5 is a side view (second state) of the vehicle seat 10. The link mechanism 6 is formed by rotatably supporting a first shaft portion 13 and a second shaft portion 25 on a triangular link plate 30. A first hole 31, a second hole 32, and a third hole 33 are drilled in the link plate 30.

[0036] The first hole 31 is a portion to which the first shaft portion 13 of the fixed frame 4 is pinned. For example, a bearing is inserted into the first hole 31, and the first shaft portion 13 is fitted inside the bearing. Similarly, the second hole 32 is a portion to which the second shaft portion 25 of the movable frame 5 is pinned. For example, a bearing is inserted into the second hole 32, and the second shaft portion 25 is fitted inside the bearing. The third hole 33 is a portion to which a stopper 34 is attached for regulating the rotation angle of the movable frame 5 relative to the fixed frame 4. The stopper 34 abuts against the arm 23 when the vehicle seat 10 is in the second state, and functions to prevent the link mechanism 6 and the movable frame 5 from rotating any further.

[0037] In the side view (first state) shown in Fig. 2(B) and Fig. 3(B), the second hole 32 (second shaft portion 25) of the link plate 30 is located forward and below the first hole 31 (first shaft portion 13). When the front cushion 3 and the front portion of the movable frame 5 are lifted upward, the link plate 30 rotates clockwise in the figures about the first hole 31 (first shaft portion 13). By rotating the link plate 30 while maintaining the orientation of the movable frame 5, the front cushion 3 in the first state slides (translates) upward and backward while changing its height and front-rear position.

[0038] Thereafter, the front connection portion 24 of the movable frame 5 is engaged with the rear connection portion 14 of the fixed frame 4, thereby achieving the second state shown in Fig. 5. In this manner, the second state is stably maintained by providing the connection mechanism 7 that connects the fixed frame 4 and the movable frame 5 separately from the link mechanism 6. At this time, the end edge of the arm 23 abuts against the stopper 34, restricting further rotation, so that the second state is maintained even more stably.

[0039] [2. Effects] (1) The vehicle seat 10 of this embodiment includes a fixed frame 4 to which the rear cushion 2 is attached and fixed to the vehicle body, a movable frame 5 to which the front cushion 3 is attached, a link mechanism 6, and a connection mechanism 7. The link mechanism 6 rotatably connects the movable frame 5 to the fixed frame 4. The connection mechanism 7 connects the fixed frame 4 and the movable frame 5 in a second state in which only the front cushion 3 serves as a seat portion.

[0040] In this way, by rotatably connecting the movable frame 5 to the fixed frame 4 by the link mechanism 6 and connecting the fixed frame 4 and the movable frame 5 by the connection mechanism 7 in the second state, the second state can be stably maintained and the stability of the cushion position and posture can be improved. In particular, by providing the link mechanism 6 and the connection mechanism 7 separately, the shape stability of the second state can be efficiently improved. In addition, since the movable frame 5 is connected to the fixed frame 4, the shape stability of the second state can be improved compared to a conventional structure in which the front cushion 3 is fixed to the seat back. Furthermore, the change from the first state to the second state can be made by simply rotating the movable frame 5, improving usability.

[0041] Furthermore, the link mechanism 6 is provided, for example, to connect the front portion of the fixed frame 4 and the front portion of the movable frame 5. In contrast, the connection mechanism 7 is provided, for example, to connect the rear portion of the fixed frame 4 and the rear portion of the movable frame 5 in the second state. With this configuration, the overall shape of the fixed frame 4 and the movable frame 5 in the second state can be made to have a closed cross-sectional shape in a side view. Therefore, deformation of the fixed frame 4 and the movable frame 5 due to the seating load can be efficiently suppressed, and the shape stability in the second state can be improved.

[0042] Furthermore, by providing the connection mechanism 7 that complies with the ISO-FIX standard, it is possible to reduce the possibility that the connection between the fixed frame 4 and the movable frame 5 will be unintentionally disconnected due to, for example, vehicle body vibration or the movement of a seated occupant (child). In addition, it is possible to realize a vehicle seat 10 that allows easy connection and disconnection between the fixed frame 4 and the movable frame 5. This improves the convenience of the vehicle seat 10. Furthermore, by making the connection mechanism 7 compatible with the ISO-FIX standard, it is also possible to mount a commercially available child seat or carrycot (infant seat) on the vehicle seat 10. This allows the user to freely use the vehicle seat 10 according to the purpose and situation, further improving convenience.

[0043] (2) As shown in FIG. 1, the vehicle seat 10 of this embodiment includes a rear divided surface 8 and a front divided surface 9. The rear divided surface 8 is formed in a plane shape that is inclined downward toward the front at the front end of the rear cushion 2. The front divided surface 9 is formed in a plane shape corresponding to the rear divided surface 8 at the rear end of the front cushion 3, and is disposed opposite the rear divided surface 8 in the first state. With this configuration, in the first state, the front divided surface 9 is disposed opposite the rear divided surface 8, and the shape stability of the first state can be improved. Also, the load input to the front cushion 3 in the first state can be efficiently transmitted to the rear cushion 2 and dispersed. This further improves the shape stability of the first state.

[0044] (3) In the second state of this embodiment, the front cushion 3 in the first state is slid upward and rearward, and the front divided surface 9 and the rear divided surface 8 are disposed opposite each other. That is, in the second state as well as in the first state, the front divided surface 9 is disposed opposite the rear divided surface 8. With this configuration, the shape stability of the second state can be improved. Also, the load input to the front cushion 3 in the second state can be efficiently transmitted and dispersed to the rear cushion 2. This further improves the shape stability of the second state.

[0045] (4) In this embodiment, the rear divided surface 8 and the front divided surface 9 are preferably both formed as flat surfaces. With this configuration, the load transmitted from the front cushion 3 to the rear cushion 2 can be evenly distributed. Therefore, the shape stability in the first state and the second state can be further improved.

[0046] (5) The fixed frame 4 of this embodiment has a pair of first members 11 and a second member 12. The first members 11 extend in the front-rear direction below both ends of the rear cushion 2 in the vehicle width direction. The second member 12 connects the pair of first members 11 in the vehicle width direction. The connection mechanism 7 of this embodiment has a front connection portion 24 provided at the rear of the movable frame 5 and a rear connection portion 14 provided at the second member 12 of the fixed frame 4. The fixed frame 4 and the movable frame 5 are connected by engaging the rear connection portion 14 and the front connection portion 24. In this way, by connecting the rear connection portion 14 provided at the second member 12 and the front connection portion 24 provided at the rear of the movable frame 5, the shape stability of the second state can be further improved.

[0047] (6) The rear connection portion 14 of the present embodiment can be disposed, for example, below the seat back in the vehicle seat 10 equipped with a seat back. With this configuration, the rear connection portion 14 does not interfere with the seating in the first state, improving the convenience of the vehicle seat 10. In addition, the rear connection portion 14 is disposed near the rear end portion of the fixed frame 4, further improving the shape stability in the second state.

[0048] (7) As shown in Fig. 4, the link mechanism 6 of this embodiment is connected to the movable frame 5 and the first member 11. With this configuration, the link mechanism 6 is disposed near the front end of the fixed frame 4, which can further improve the shape stability in the second state.

[0049] [3.Other] The above embodiment is merely illustrative, and is not intended to exclude various modifications or application of techniques not specified in the embodiment. Each configuration of the embodiment can be modified in various ways without departing from the spirit of the embodiment. Furthermore, each configuration of the embodiment can be selected as necessary, or can be combined appropriately.

[0050] In the above embodiment, the rear cushion 2 provided with the rear dividing surface 8 and the front cushion 3 provided with the front dividing surface 9 are exemplified, but these configurations can be omitted or changed. Also, in the above embodiment, the state in which the front cushion 3 in the first state is slid upward and rearward is the second state, but the relationship between the first state and the second state is not limited to this, and for example, the state in which the first state is rotated may be defined as the second state.

[0051] In a vehicle seat 10 whose shape can be changed at least between a first state in which both the rear cushion 2 and the front cushion 3 serve as the seating portion and a second state in which only the front cushion 3 serves as the seating portion, it is possible to achieve the same effects as those of the above-described embodiment by providing a fixed frame 4, a movable frame 5, a link mechanism 6, and a connection mechanism 7. It is self-evident that the specific shapes and structures of each of the fixed frame 4, the movable frame 5, the link mechanism 6, and the connection mechanism 7 can be changed as appropriate. [Industrial Applicability]

[0052] The present invention is applicable to the manufacturing industry of vehicle seats to be mounted on vehicles, and also to the manufacturing industry of vehicles in which the vehicle seats are mounted. [Explanation of symbols]

[0053] 1 seat cushion 2 Rear cushion 3 Front cushion 4 Fixed Frame 5 Movable Frame 6 Link mechanism 7 Attachment 8 Posterior split plane 9 Front dividing plane 10 Vehicle seats 11 First member 12 Second member 13 First shaft part 14 Rear connection 15 Mount 21 Plate 22 Ribs 23 Arm 24 Front connection 25 Second shaft part 30 Link plate 31 First hole 32 Second hole 33 Third hole 34 Stopper

Claims

1. A vehicle seat including a seat cushion divided in a vehicle longitudinal direction, the seat cushion including a rear cushion disposed on a rear side and a front cushion disposed on a front side, the vehicle seat being changeable in shape between a first state in which both the rear cushion and the front cushion serve as a seating portion and a second state in which only the front cushion serves as a seating portion, a fixed frame to which the rear cushion is attached and which is fixed to a vehicle body; a movable frame to which the front cushion is attached; a link mechanism that rotatably connects the movable frame to the fixed frame; a connection mechanism that connects the fixed frame and the movable frame in the second state; A vehicle seat comprising:

2. a rear dividing surface formed in a surface shape inclined downward toward the front at a front end portion of the rear cushion; a front divided surface that is formed in a surface shape corresponding to the rear divided surface at a rear end portion of the front cushion and is disposed opposite to the rear divided surface in the first state; 2. The vehicle seat according to claim 1, wherein the seat is a seat for a vehicle.

3. The second state is a state in which the front cushion in the first state is slid upward and rearward, and the front divided surface and the rear divided surface are disposed opposite to each other.

3. The vehicle seat according to claim 2, wherein the seat is a seat for a vehicle.

4. The rear parting surface and the front parting surface are both flat surfaces.

4. A vehicle seat according to claim 2 or 3.

5. the fixed frame includes a pair of first members extending in a front-rear direction of the vehicle below both ends of the rear cushion in the vehicle width direction, and a second member connecting the pair of first members in the vehicle width direction, the connection mechanism has a front connection portion provided at a rear portion of the movable frame and a rear connection portion provided at the second member of the fixed frame, The fixed frame and the movable frame are connected by engaging the rear connection portion with the front connection portion.

2. The vehicle seat according to claim 1, wherein the seat is a seat for a vehicle.

6. The rear connection portion is disposed below the seat back.

6. The vehicle seat according to claim 5, wherein the seat is a seat for a vehicle.

7. The link mechanism is connected to the movable frame and the first member.

7. A vehicle seat according to claim 5 or 6.

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