Vehicle seats

Abstract

To provide a vehicle seat with an ottoman device capable of suppressing size increase of a seat with a simple structure.SOLUTION: A vehicle seat S is a seat in which a seat body can be switched between a seating possible state and a storage state. The vehicle seat comprises: a cushion lock unit 60 having a cushion operation lever 64 which is operated for switching the seat body state between the seating possible state and the storage state; and an ottoman device 70 which is rotatably attached to a front part of the seat cushion 2 through an ottoman rotary shaft 71 and has a leg support member 80 for supporting from downward, leg parts of a seated person. The cushion operation lever 64 and the ottoman rotary shaft 71 are arranged in a seat width direction, and is arranged so as not to protrude to a front side of the seat relative to a front end part of the seat cushion.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat in which a seat body having a seat back and a seat cushion can be switched from a seatable state. [Background technology]

[0002] Conventionally, vehicle seats in which the seat back and seat cushion constituting the seat body can be switched from a seated state in which a seated occupant can be seated are already known, and among these are vehicle seats that further include an ottoman device that is attached to the front portion of the seat cushion and can support the legs of the occupant from below (see, for example, Patent Document 1).

[0003] The vehicle seat described in Patent Document 1 is a seat with an ottoman device that can be arranged into three different configurations: a seated state in which a passenger can sit, a stored state in which the seat body is stored in the storage floor, and a tip-up state in which the seat body is flipped up. Specifically, the ottoman device is mainly composed of an ottoman rotation shaft (base member) that is attached to the seat cushion via a reinforcing member, and a leg support member (ottoman) that is rotatably attached via the ottoman rotation shaft. The vehicle seat also has a switching operation lever (grip member) that is attached to a front portion of the seat cushion so as to protrude forward from the seat cushion and is operated to arrange the seat. At this time, the ottoman pivot shaft and the leg support member are disposed so as to protrude further forward than the seat cushion and the switching operation lever in order to prevent interference with the switching operation lever. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-127157 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in a vehicle seat that allows seat arrangements as in Patent Document 1, the structure is relatively complicated and the number of components increases, so there is a risk that the entire seat will become large and heavy. In particular, in a vehicle seat with an ottoman device, the ottoman device protrudes forward of the seat beyond the seat cushion, so there is a risk that the seat will become large in the front-to-rear direction. Therefore, there has been a demand for a vehicle seat that can suppress an increase in the size of the entire seat including the ottoman device through a simple configuration.

[0007] Books The object of the invention is to provide a vehicle seat with an ottoman device that can switch the seat body from a seating position and that can suppress the seat from becoming large with a simple structure. 。 [Means for solving the problem]

[0008] The above-mentioned problem is solved by a vehicle seat of the present invention, which provides a vehicle seat including a seat body having a seat back and a seat cushion, the seat body being switchable between a seatable state in which a seat occupant can sit on it and a moved state in which the seat body has been moved from the seatable state, the seat body being equipped with an ottoman device which is rotatably attached to a front portion of the seat cushion via an ottoman rotation shaft, the ottoman device having a leg support member for supporting the legs of the seat occupant from below, the leg support member being rotatable between a stored position in which the leg support member is stored on the seat cushion side and a deployed position in which the leg support member is rotated and moved toward the front of the seat from the stored position, and a rail device which supports the seat body movably in the front-rear direction of the seat and locks the moving operation of the seat body, the ottoman operation lever of the ottoman device being disposed on one side of the left or right side portion of the seat cushion, and the rail operation lever of the rail device being disposed on the other side of the left or right side portion of the seat cushion. The rail operation lever and the ottoman rotation shaft are disposed in a position where they overlap in a side view of the seat when the leg support member is in the storage position, and the ottoman operation lever is disposed in a position behind the ottoman rotation shaft in a side view of the seat. This problem is solved by: As described above, in the seat in which the seat body can be switched from a seatable state, the ottoman operation lever and the rail operation lever are attached to the seat cushion.

[0009] At this time, the ottoman operating lever is the seat side view The rail operating lever Positioned further back than the seat It would be good to place it in In addition, the seat cushion is formed with a storage recess for storing the ottoman device, and the ottoman operation lever and the rail operation lever are When viewed from the front of the seat The storage recess Outside the sheet width direction It would be good to place it in that position. Ma In addition, the seat cushion may be provided with a cushion frame that forms the skeleton of the seat cushion, the cushion frame having left and right side frames arranged on the sides in the seat width direction, the ottoman operating lever being arranged on one side of the side frame, and the rail operating lever being arranged on the other side of the side frame. In addition, it is preferable that the ottoman operating lever is disposed on the outer surface of the side frame, and the rail operating lever is disposed on the front surface of the side frame. Ma In addition, an ottoman pillar supporting the leg support member may be disposed between the ottoman operating lever and the rail operating lever in the seat width direction. The seat body may further include a reclining device that rotatably supports the seat back and locks the rotational movement of the seat back when the seat is in the seatable state, the seat body having the seat back, the seat cushion and a headrest, the seat cushion having a cushion frame, a cushion pad placed on the cushion frame, and a cover material covering the cushion frame and the cushion pad, and the rail device may have left and right lower rails extending in the fore-and-aft direction of the seat, and left and right upper rails supported slidably along the left and right lower rails. Effect of the Invention

[0016] According to the present invention, it is possible to realize a vehicle seat with an ottoman device that has a simple configuration and prevents the seat from becoming large, in a seat where the seat body can be switched from a seating position. According to the present invention, an ottoman device W Can be placed compactly 。 [Brief description of the drawings]

[0017] [Figure 1] 1 is a perspective view of a vehicle seat according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional perspective view showing a seat cushion and an ottoman device. [Diagram 3] FIG. 2 is a perspective view of a seat frame that serves as a framework of the vehicle seat. [Figure 4] FIG. 4 is an enlarged view of a main part of FIG. [Diagram 5] FIG. 2 is a top view showing the cushion frame and the ottoman device. [Figure 6] 4 is an enlarged view of a main portion showing a cushion frame and a lever mounting bracket. FIG. [Figure 7] 13 is an enlarged view of the main parts showing the cushion frame and the lever mounting bracket as viewed from a different angle. FIG. [Figure 8] FIG. 2 is a side view of the seat frame, showing the reclining device. [Figure 9] FIG. 4 is a side view of the seat frame, showing a cushion lock device. [Figure 10] FIG. [Figure 11] 13A to 13C are diagrams illustrating the operation of moving from a seating state to a stored state. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] 13A to 13C are diagrams illustrating the operation of returning from a tip-up state to a seatable state. [Figure 15] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to an embodiment of the present invention will be described below with reference to FIGS. This embodiment relates to an invention of a vehicle seat in which a seat body having a seat back and a seat cushion can be switched between a seatable state and a stored state, and which is equipped with a cushion lock device having a cushion operating lever that is operated to switch the seat body between the seatable state and the stored state, and an ottoman device that is attached to the front portion of the seat cushion so as to be rotatable via an ottoman pivot shaft, has a leg support member for supporting the legs of a seated person from below, and is capable of rotating the leg support member between a stored position and an deployed position, wherein the cushion operating lever is attached to the front portion of the seat cushion, the cushion operating lever and the ottoman pivot shaft are arranged side by side in the seat width direction, and do not protrude forward of the seat in the front-to-rear direction of the seat beyond the front end of the seat cushion. In addition, the side of the vehicle seat on which an occupant sits relative to the seat back is the front side of the seat.

[0019] The vehicle seat S of the present embodiment is, for example, a rear seat corresponding to the rear seat of a vehicle. Note that the vehicle seat S can also be used as a middle seat in the second row in a vehicle having three rows of seats in the front-rear direction of the vehicle. The vehicle seat S is a seat that can be arranged in three different configurations: a seatable state in which a seat occupant can be seated, a stored state in which the seat body is stored in the storage floor, and a tip-up state in which the seat body is flipped up. Specifically, when the seat occupant pulls the first reclining operation lever 54 at the top end of the seat body from the seatable state shown in Fig. 10, the seat body falls forward and is folded (see Fig. 11), switching to the stored state shown in Fig. 12 in which the seat body is stored on the storage floor. Then, when the seat occupant manually raises the seat body upward from the stored state, the seat body switches to the tip-up state shown in Fig. 13. Furthermore, when the seat occupant pulls the cushion operation lever 64 at the front end of the seat body (seat cushion) from the tip-up state (see Fig. 14), part of the seat body (seat cushion) rotates downward, returning to the seatable state shown in Fig. 15. Details will be described later.

[0020] As shown in Figures 1 to 3, a vehicle seat S is mainly composed of a seat body having a seat back 1, a seat cushion 2, and a headrest 3, a support base 30 that supports the seat body from below, and left and right rail devices 40 that are attached between the vehicle floor and the support base 30, support the seat body so that it can move in the fore-and-aft direction, and lock the movement of the seat body. As shown in FIG. 3, the vehicle seat S is equipped with a reclining device 50 that rotatably connects the seat back 1 to the support base 30 and locks the rotational movement of the seat back 1 when the seat is in a seatable state and a tip-up state, and a cushion locking device 60 that rotatably connects the seat cushion 2 to the seat back 1 and locks the rotational movement of the seat cushion 2 when the seat is in a seatable state, a stored state, and a tip-up state. Furthermore, the vehicle seat S is equipped with an ottoman device 70 which is attached so as to be rotatable relative to the front portion of the seat cushion 2, has a leg support member 80 which supports the legs of the seated occupant from below, and can be rotated between a stored position shown in FIG. 1 in which the leg support member 80 is stored on the seat cushion 2 side, and an deployed position shown in FIG. 2 in which the leg support member 80 is rotated and moved toward the front of the seat from the stored position. In addition, a recessed storage floor is provided on the front side of the vehicle seat S, the storage floor being positioned lower than the vehicle body floor.

[0021] As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of an occupant from behind, and is configured by placing a cushion pad 1a on a back frame 10 shown in FIG. 3, which serves as the skeleton, and covering it with a skin material 1b. The seat cushion 2 is a seating portion that supports an occupant from below, and is configured by placing a cushion pad 2a on a cushion frame 20 shown in FIG. 3 that serves as a framework, and covering the cushion with a skin material 2b. The headrest 3 is a head portion that supports the head of an occupant from behind, and is configured by placing a cushion pad on a pillar (not shown) that serves as a core material and covering it with a skin. 2, a storage recess 2c for storing an ottoman device 70 (ottoman rotation shaft 71) is formed in the center of the front end of the seat cushion 2 in the seat width direction. The seat cushion 2 and the ottoman device 70 are configured to have a generally integrated appearance from their outer surfaces. The storage recess 2c is formed at the front end of the seat cushion 2 such that its lower portion is recessed toward the rear of the seat, and the seating surface (upper surface) of the seat cushion 2 is secured even at the front end portion of the seat cushion 2. That is, the cushion pad 1a is placed also at the front end portion of the seat cushion 2 and is covered with the cover material 1b. Therefore, the seating comfort of the seated occupant is not impaired. Also, it is possible to prevent foreign matter from entering between the components of the ottoman device 70 from the outside (from above).

[0022] As shown in FIG. 3, the back frame 10 is a rectangular frame-shaped body that forms the skeleton of the seat back 1, and left and right connecting brackets 11 are attached to the lower part of the outer surface of the back frame 10 in the seat width direction for connecting to the support base 30. The connecting bracket 11 is made of a bow-shaped sheet metal member extending in the vertical direction, and the upper end of the connecting bracket 11 is attached to the back frame 10 and the lower end is attached to the support base 30. A reclining device 50 (reclining body 51) that rotatably connects the back frame 10 to the support base 30 is attached to the lower end of the right-side connecting bracket 11, and a back rotation shaft 52 that is journalled to the support base 30 in the seat width direction is provided at the lower end of the left-side connecting bracket 11.

[0023] As shown in Figures 3 to 5, the cushion frame 20 is made of a rectangular frame-like body that forms the skeleton of the seat cushion 2, and is mainly composed of left and right side frames 21 arranged on the sides in the seat width direction, a front frame 22 that connects the front portions of each side frame 21, a pipe-shaped rear frame 23 that connects the rear portions of each side frame 21, a wire-shaped central frame 24 that connects the central portions of each side frame 21, and a pan frame 25 as a plate-like frame that connects the front frame 22, the rear frame 23 and the central frame 24.

[0024] The side frame 21 is made of a sheet metal member that is elongated in the fore-and-aft direction of the seat and has a generally C-shaped cross section. Specifically, the side frame 21 is mainly composed of a frame side wall portion 21a extending in the vertical direction, and a frame upper wall portion 21b and a frame bottom wall portion 21c that are bent from both ends of the frame side wall portion 21a in the vertical direction and extend outward in the width direction of the seat. A cushion operating lever 64 is attached to the front end portion of the right side frame 21 via a lever mounting bracket 27, and a rail operating lever 43 is attached to the front end portion of the left side frame via a lever mounting bracket 27. An ottoman operation lever 76 of the ottoman device 70 is attached to the front portion of the outer surface in the seat width direction of the right side frame 21 (frame side wall portion 21a), and a second reclining operation lever 55 of the reclining device 50 is attached to the center portion of the outer surface. A cushion lock device 60 is attached to the rear end portion of the outer surface in the seat width direction of the left side frame 21 (frame side wall portion 21a).

[0025] The left and right side frames 21 are disposed at positions different from the left and right rail devices 40 in the seat width direction, specifically offset to the right of the left and right rail devices 40. This offset arrangement makes it possible to secure space on the outer surface of the left side frame 21, and in addition to the cushion lock device 60, the armrest 4 and the seat belt buckle 5 shown in Fig. 1 are attached in this space. As a result, it is possible to prevent the vehicle seat S from becoming larger in the seat width direction.

[0026] As shown in Figs. 4 and 5, the front frame 22 is made of a composite member made up of a combination of a plurality of square pipes, and extends in the seat width direction. The front frame 22 has left and right frame side portions 22a arranged to penetrate the side surfaces of the left and right side frames 21, respectively, and a frame central portion 22b that connects the inner ends of the left and right frame side portions 22a in the seat width direction and is arranged to protrude further forward of the seat than the frame side portions 22a. An ottoman locking member 75 is attached to the rear surface of the inner end of the frame side portion 22a on the ottoman operating lever 76 side, of the left and right frame side portions 22a. Furthermore, a pillar support member 73 for supporting an ottoman pillar 72 is attached by welding to the bottom surface of the inner end of the frame side portion 22a. The frame center portion 22b is attached by welding to the left and right frame side portions 22a in a state of abutting against the front surfaces of the frame side portions 22a. Three pillar support members 73 are attached by welding to the bottom surface of the frame central portion 22b, the pillar support members 73 being arranged at predetermined intervals in the seat width direction.

[0027] The rear frame 23 consists of a number of pipe members spaced apart in the fore-and-aft direction of the seat, and a base abutment member 26 is attached to the bottom surface of the lateral portion of the rear frame 23 on the side where the reclining device 50 and ottoman device 70 are attached. The base abutment member 26 is arranged to abut against the support base 30 (base cover 35) when the seat is ready to be seated. The base abutment member 26 is composed of a frame mounting portion 26a that is attached by welding while being sandwiched between the rear frame 23, and a resin base abutment portion 26b that fits into a part of the rear frame 23 and the frame mounting portion 26a and protrudes downward from the frame mounting portion 26a.

[0028] In the above frame configuration, as shown in FIG. 4, the portions of the front frame 22 where the frame side portions 22a and the frame central portion 22b are connected support the left and right pillar support members 73. Therefore, the support area of ​​the front frame 22 for the left and right pillar support members 73 can be secured, and the support rigidity of the cushion frame 20 for the pillar support members 73 can be increased.

[0029] In the above frame configuration, as shown in FIG. 5, the portion of the front frame 22 where the frame side portion 22a and the frame center portion 22b are connected is attached to the pan frame 25 by welding. Therefore, the supporting rigidity of the pan frame 25 by the front frame 22 can be increased.

[0030] In the above frame configuration, as shown in FIG. 5, the base abutment member 26 and the pan frame 25 are connected to the rear frame 23, and the base abutment member 26 is further positioned so as to overlap a portion of the pan frame 25 in the vertical direction. Therefore, the support rigidity of the base abutment member 26 and the pan frame 25 can be increased.

[0031] As shown in Figures 4 to 7, the lever mounting bracket 27 is a member for mounting the cushion operating lever 64 and the rail operating lever 43 to the cushion frame 20, and is attached to the front end portion of the side frame 21 and is positioned above the ottoman rotation axis. As shown in Figures 6 and 7, the lever mounting bracket 27 is mainly composed of an upper plate portion 27a that is attached in abutment against the frame upper wall portion 21b of the side frame 21 and extends forward of the seat, a lower plate portion 27b that is attached in abutment against the frame side wall portion 21a and the frame bottom wall portion 21c and extends forward of the seat, a connecting wire portion 27c that connects the upper plate portion 27a and the lower plate portion 27b, and a lever mounting portion 27d that is attached in a state surrounded by the connecting wire portion 27c and for mounting the cushion operating lever 64 (rail operating lever 43).

[0032] The upper plate portion 27a is a plate-like member having a bent crank shape such that its front portion protrudes upward more than its rear portion, and also serves to support the seat cushion 2 (cushion pad 2a) from below. The lower plate portion 27b is a plate-like member having a box shape with its outer edge portion formed so as to protrude upward, and a floor abutment member 28 is attached to the bottom surface of the lower plate portion 27b, which can abut against the storage floor when the seat body is moved to the stored state. The connecting wire portion 27c is composed of left and right first extension portions 27ca extending in the fore-and-aft direction of the seat, left and right second extension portions 27cb bending continuously from the front ends of the left and right first extension portions 27ca and extending downward, and a third extension portion 27cc connecting the lower ends of the left and right second extension portions 27cb. The lever attachment portion 27d is surrounded by the left and right second extending portions 27cb and the third extending portion 27cc and is attached to them by welding. In addition, the lever attachment portion 27d has an attachment hole for attaching the cushion operating lever 64 (rail operating lever 43).

[0033] 6 and 7, the floor contact member 28 is made of a known elastic resin material and is disposed inside the outer end of the seat cushion 2 (cushion frame 20) in the seat width direction. The floor contact member 28 and the cushion operating lever 64 (rail operating lever 43) are disposed at the same position in the seat width direction.

[0034] In the above configuration, as shown in Figs. 4 and 5, in order to ensure the mounting rigidity of the left and right lever mounting brackets 27, reinforcing wires 29 are provided for connecting the left and right lever mounting brackets 27 and the front frame 22. Specifically, the reinforcing wire 29 has a first reinforcing wire 29a having an approximately U-shape that connects the left and right lever mounting brackets 27 (upper plate portions 27a), and a second reinforcing wire 29b having an approximately inverted U-shape that is suspended between the central portion of the first reinforcing wire 29a in the seat width direction and the front frame 22 (frame central portion 22b). The reinforcing wire 29 is disposed at a position above the ottoman rotation axis.

[0035] As shown in Figure 3, the support base 30 is a member that supports the seat body and is provided on the lateral portion in the seat width direction. It comprises left and right side base portions 31 arranged along the left and right rail devices 40, a front base connecting portion 32 that connects the front portions of each side base portion 31, a rear base connecting portion 33 that connects the rear portions of each side base portion 31, and left and right reinforcing base portions 34 attached to the upper surfaces of each side base portion 31. The left and right ends of each of the front base connecting portion 32 and the rear base connecting portion 33 are sandwiched and connected between the side base portion 31 and the reinforcing base portion 34. The support base 30 is covered from above by a base cover 35 .

[0036] As shown in Figs. 1 and 2, the base cover 35 is a resin molded part that covers the entire support base 30 and the rail device 40 from above. The base cover 35 has a function of protecting the support base 30 and the rail device 40 from the outside, as well as a function of guiding the movement of the seat body (seat cushion 2) when the seat body switches from a seatable state to a stored state. The base cover 35 mainly comprises left and right cover protrusions 35a which are provided on the lateral portions in the seat width direction and are formed so as to protrude upward toward the seat cushion 2, and a cover accommodating recess 35b which is provided between the left and right cover protrusions 35a and is formed so as to be recessed downwardly relative to the cover protrusions 35a, for accommodating items. The cover protrusion 35a has the highest upper surface at its central portion in the seat front-rear direction, and the storage floor is disposed on the extension of the inclined surface in front of the seat. 9, when the seat body moves from the seatable state to the storage state, the cover protrusion 35a has a function of abutting against the base abutment member 26 provided at the lower end of the seat cushion 2 and causing the base abutment member 26 to slide (slide) toward the storage floor. In other words, the seat cushion 2 is guided by the base cover 35 to move smoothly toward the storage floor.

[0037] As shown in FIG. 3, the rail device 40 is disposed between the seat body and the vehicle floor in the vertical direction, and is mainly composed of left and right lower rails 41 that are fixed to the vehicle floor and extend in the fore-and-aft direction of the seat, left and right upper rails 42 that are supported slidably along the lower rails 41, a locking member (not shown) that locks the upper rails 42 against the lower rails 41 so that they cannot slide, and a rail operating lever 43 that is operated to release the locked state of the locking member. A support base 30 is mounted on the upper surfaces of the left and right upper rails 42 . The rail operating lever 43 is attached to the front end portion of the left side frame 21 via a lever attachment bracket 27.

[0038] As shown in Figs. 3 and 8, the reclining device 50 is disposed on the inner surface of the connecting bracket 11 on the right side in the seat width direction, and prevents interference with the cushion frame 20 in the seat width direction. The reclining device 50 is mainly composed of a reclining body 51 that is driven when rotating the back frame 10, a back rotation shaft 52, a spiral spring 53 that urges the back frame 10 to rotate forward around the back rotation shaft 52, a first reclining operation lever 54 shown in Figure 1 and a second reclining operation lever 55 shown in Figure 5 that are operated to release the locked state of the back frame 10, a first reclining cable 56 that connects the first reclining operation lever 54 and the reclining body 51, and a second reclining cable 57 that connects the second reclining operation lever 55 and the reclining body 51.

[0039] The reclining body 51 has a known locking mechanism, and the state of the back frame 10 can be switched between a locked state in which it is fixed to the support base 30 and an unlocked state in which it is rotatable relative to the support base 30. The back rotation shaft 52 is supported on the back frame 10 side and the support base 30 side in the seat width direction, and one end of the spiral spring 53 is anchored to the back frame 10 side and the other end is anchored to the support base 30 side. The first reclining cable 56 is pulled by the operation of the first reclining operation lever 54 to switch the seat back 1 from a locked state to an unlocked state. In addition, the second reclining cable 57 is pulled by the operation of the second reclining operation lever 55 to switch the seat back 1 from a locked state to an unlocked state.

[0040] In the above configuration, the reclining device 50 locks the back frame 10 in the upright position shown in Figure 10, and when the first reclining operation lever 54 (second reclining operation lever 55) is operated, the locked state is released and the back frame 10 is rotated forward by the biasing force of the spiral spring 53, allowing it to be folded toward the vehicle floor (see Figure 12).

[0041] As shown in Figs. 3 and 9, the cushion lock device 60 is disposed on the outer surface of the left side frame 21 in the seat width direction. The cushion locking device 60 is mainly composed of a locking body 61 for locking the rotational movement of the cushion frame 20, a cushion rotation shaft 62, a spiral spring 63 for urging the cushion frame 20 downward around the cushion rotation shaft 62, a cushion operating lever 64 that is operated to release the locked state of the cushion frame 20, a first cushion cable 65 that connects the above-mentioned first recliner operating lever 54 and the locking body 61, and a second cushion cable 66 that connects the cushion operating lever 64 and the locking body 61.

[0042] The cushion rotation shaft 62 is supported on the back frame 10 side and the cushion frame 20 side in the seat width direction, and one end of the spiral spring 63 is engaged with the back frame 10 side and the other end is engaged with the cushion frame 20 side. Note that the spiral spring 63 may be omitted. The cushion operating lever 64 is attached to the front end portion of the cushion frame 20 and is disposed at the right end portion of the cushion frame 20, in other words, at the end portion on the vehicle door side of the vehicle seat S. Therefore, it is possible for an occupant to operate the cushion operating lever 64 from outside the vehicle with the vehicle door open.

[0043] The first cushion cable 65 extends vertically along the outer surface of the back frame 10, and is pulled by operation of the first recliner operating lever 54 to switch the cushion frame 20 from a locked state to an unlocked state. In addition, the second cushion cable 66 extends in the front-rear direction of the seat along the outer surface of the cushion frame 20, and is pulled by the operation of the cushion operating lever 64 to switch the cushion frame 20 from a locked state to an unlocked state.

[0044] The cushion locking device 60 locks the cushion frame 20 in the horizontal position shown in Figure 10, and when the first recliner operating lever 54 is operated, it releases the locked state in conjunction with the back frame 10, allowing the cushion frame 20 to be folded toward the vehicle floor while being urged forward by the force of the spiral spring 63 (see Figure 12). Furthermore, when the cushion operating lever 64 is operated in the seatable state, the cushion locking device 60 releases the locked state of the cushion frame 20 and raises the cushion frame 20 upward against the biasing force of the spiral spring 63, thereby moving it to the tip-up state shown in Fig. 13. Then, when the cushion operating lever 64 is operated again in the tip-up state (see Fig. 14), the biasing force of the spiral spring 63 causes the cushion frame 20 to rotate downward relative to the back frame 10, returning it to the seatable state shown in Fig. 15.

[0045] In the above configuration, as shown in Fig. 3, the reclining device 50 is disposed on the right side of the seat body in the seat width direction, while the cushion lock device 60 is disposed on the left side of the seat body. This allows the relatively large components to be disposed in a well-balanced manner, improving the balance of the entire seat body.

[0046] In the above configuration, as shown in FIG. 5, the cushion operating lever 64 and the reclining body 51 are positioned inside the outer end of the seat cushion 2 in the seat width direction, and are positioned at the same position as each other in the seat width direction. Therefore, the components of the cushion lock device 60 and the reclining device 50 can be arranged compactly.

[0047] As shown in Figs. 2 to 5, the ottoman device 70 is attached to the front end portion of the seat cushion 2, and is disposed between the cushion operating lever 64 and the rail operating lever 43 in the seat width direction. The ottoman device 70 includes an ottoman rotation shaft 71 that extends in the seat width direction and is journalled to the cushion frame 20 (front frame 22), and a leg support member 80 that rotates about the ottoman rotation shaft 71 relative to the cushion frame 20. The leg support member 80 is a device that can rotate between a stored position shown in FIG. 1 and an deployed position shown in FIG. 2, which is rotated and moved toward the front of the seat from the stored position. The ottoman device 70 also includes an ottoman pillar 72 attached to the rear end of the ottoman pivot shaft 71 and supporting the leg support member 80 so that it can move back and forth, a pillar support member 73 attached to the bottom surface of the front frame 22 to support the ottoman pillar 72, a pillar guide 74 attached while being stored inside the pillar support member 73 and guiding the ottoman pillar 72, an ottoman locking member 75 attached to the rear surface of the front frame 22 and locks the leg support member 80 against forward and backward movement, and an ottoman operating lever 76 that is operated to release the locked state of the ottoman locking member 75.

[0048] In other words, the ottoman device 70 has the function of rotating the leg support member 80 between a stored position shown in Figure 1 in which the leg support member 80 is stored on the seat cushion 2 side to support the legs of a seated occupant, and a deployed position shown in Figures 2 and 3 in which the leg support member 80 is rotated and moved toward the front of the seat from the stored position. In addition, the ottoman device 70 also has the function of moving the leg support member 80 back and forth between a standard position shown in Figures 1 and 2, in which the leg support member 80 is positioned on the seat cushion 2 side, and a protruding position shown in Figure 3, in which the leg support member 80 protrudes forward from the standard position to the front of the seat, in order to support the legs according to the physique of the seated occupant.

[0049] As shown in FIG. 2, the ottoman pivot shaft 71 is made of a pipe member with a circular cross section that extends in the seat width direction. The pipe member is surrounded by an ottoman pad 71a, and the pipe member and ottoman pad 71a are covered with a cover material 71b. As shown in Figures 1 and 2, the ottoman rotation shaft 71 is positioned between the cushion operating lever 64 and the rail operating lever 43 in the seat width direction, and the ottoman rotation shaft 71, the cushion operating lever 64, and the rail operating lever 43 are arranged side by side in the seat width direction. Further, the ottoman rotation shaft 71, the cushion operating lever 64, and the rail operating lever 43 are arranged so as not to protrude further forward than the front end of the seat cushion 2 in the seat front-rear direction.

[0050] Both ends of the ottoman rotation shaft 71 in the seat width direction pass through the leg support member 80 (leg support frame 81). In addition, a plurality of mounting holes 71c are formed at the rear end of the ottoman rotation shaft 71, and are arranged at predetermined intervals in the seat width direction, for mounting each of the plurality of ottoman pillars 72.

[0051] As shown in Figures 2, 4, and 5, the ottoman pillar 72 is a pipe member with a circular cross section for moving the leg support member 80 and the ottoman rotation shaft 71 in the fore-and-aft direction of the seat relative to the seat cushion 2, and extends in the fore-and-aft direction of the seat. The front end of the ottoman pillar 72 is fitted into the mounting hole 71 c of the ottoman pivot shaft 71 , and the rear portion of the ottoman pillar 72 is inserted inside the pillar support member 73 . In detail, when the leg support member 80 is in the protruding position, the rear portion of the ottoman pillar 72 is supported by the pillar support member 73, whereas when the leg support member 80 is in the standard position, the front portion of the ottoman pillar 72 is supported by the pillar support member 73 and its rear portion protrudes further rearward than the pillar support member 73. That is, when the leg support member 80 is in the reference position, the ottoman pillar 72 and the pillar guide 74 housed in the pillar support member 73 are in contact with each other.

[0052] The pillar support members 73 are pipe members that are long in the front-rear direction of the seat and have a rectangular cross section, and a plurality of them are arranged at intervals in the seat width direction. The left and right pillar support members 73 are attached to the frame side portions 22a and the frame central portion 22b of the front frame 22, and the central pillar support member 73 is attached only to the frame central portion 22b.

[0053] As shown in Figures 4 and 5, the pillar guide 74 consists of a hollow rod-shaped body with a rectangular cross section and is a member that supports the ottoman pillar 72 by inserting it into its internal space. The pillar guide 74 itself is attached by being inserted into the internal space of the pillar support member 73 from the front side of the seat. More specifically, when the pillar guide 74 is stored deep within the internal space of the pillar support member 73, the front end flange 74a and the rear end flange 74b of the pillar guide 74 are in contact with the front end and rear end, respectively, of the pillar support member 73. In other words, the front end flange 74a and the rear end flange 74b sandwich the pillar support member 73 therebetween.

[0054] 4 and 5, in the above configuration, an engagement notch (not shown) is formed in the outer peripheral surface of the ottoman pillar 72 at a portion that is inserted into the pillar guide 74. The engagement notch is detachably engaged with an engagement claw (not shown) provided on the inner peripheral surface of the pillar guide 74. A plurality of such engagement notches are formed at predetermined intervals in the front-rear direction of the seat. Therefore, the ottoman pillar 72 can move stepwise in the front-rear direction of the seat relative to the pillar support member 73 and the pillar guide 74, and the ottoman pillar 72 can be fixed at a predetermined front-rear position.

[0055] In the above configuration, the ottoman pillar 72, the pillar support member 73, and the pillar guide 74 are disposed below the front frame 22, as shown in FIG. This reduces the discomfort felt by the seat occupant when seated.

[0056] As shown in Figures 4 and 5, the ottoman locking member 75 is made of a known locking member and locks the forward and backward movement of the ottoman pillar 72. The locked state can be released by operating the ottoman operating lever 76. Specifically, the ottoman locking member 75 normally locks the forward and backward movement of the right-side ottoman pillar 72. When the ottoman operating lever 76 is pushed in, a push-out rod (not shown) connected to the ottoman operating lever 76 acts on the ottoman locking member 75. As a result, the ottoman locking member 75 releases the locked state of the right-side ottoman pillar 72. That is, while the ottoman operating lever 76 is being operated, the ottoman locking member 75 keeps the ottoman pillar 72 unlocked.

[0057] As shown in FIG. 2, the leg support member 80 is configured by placing a leg support pad 82 on a leg support frame 81 in the form of a rectangular frame serving as a skeleton, and covering the leg support pad 82 with a covering material 83. As shown in Figures 2 and 5, the leg support member 80 has a rear leg support portion 80a supported by the ottoman pivot shaft 71, and a front leg support portion 80b which is located further forward of the seat than the rear leg support portion 80a and is formed so as to be wider in the seat width direction than the rear leg support portion 80a. As shown in FIG. 2, the leg support frame 81 is arranged on the sides in the seat width direction and is mainly composed of left and right leg side frames (not shown) to which the ottoman rotation shaft 71 is attached, a leg connecting frame 81a connecting the front portions of each leg side frame, and a leg connecting auxiliary frame 81b connecting the central portions of each leg side frame.

[0058] In the above configuration, the leg support member 80 is attached to the ottoman rotation shaft 71 via a ratchet mechanism that can be switched to rotate. Therefore, the leg support member 80 can be rotated stepwise toward the front side of the seat relative to the ottoman rotation shaft 71, and the leg support member 80 can be deployed and moved from the stored position and fixed at a predetermined rotated position. In addition, the leg support member 80 can be rotated in stages toward the rear of the seat relative to the ottoman rotation shaft 71, and the leg support member 80 can be moved from the deployed position to a stored position and fixed at a predetermined rotated position.

[0059] <Seat storage operation> Next, the operation of moving the seat body from the seating state to the stored state will be described with reference to Figures 10 to 12. In Figures 10 to 12, the reclining device 50 and the cushion locking device 60 are shown in a locked state when indicated by a black circle, and in an unlocked state when indicated by a white circle. The same applies to Figures 13 to 15.

[0060] 10, the seat back 1 is supported by the support base 30 and locked in an upright position by the reclining device 50. The seat cushion 2 connected to the seat back 1 is supported from below by the base cover 35 (support base 30). At this time, the base abutment portion 26b provided at the lower end of the seat cushion 2 abuts against the surface of the base cover 35 (cover protrusion portion 35a).

[0061] When the vehicle seat S is moved from the seatable state to the stowed state, the first reclining operation lever 54 (or the second reclining operation lever 55) provided on the upper surface of the seat back 1 is operated. When the seat occupant operates the first reclining operation lever 54, the first reclining cable 56 and the first cushion cable 65 are pulled, respectively, and the reclining device 50 and the cushion locking device 60 are released from the locked state, as shown in FIG. 11. Then, the seat back 1 starts to rotate toward the seat front side about the back rotation shaft 52 by the biasing force of the spiral spring 53 so as to move the seat cushion 2 to the storage floor.

[0062] As shown in FIG. 12, when the seat back 1 and the seat cushion 2 reach the storage floor, the floor abutment member 28 provided on the seat cushion 2 can abut against the surface of the storage floor. Furthermore, when the seat back 1 and the seat cushion 2 reach the storage floor, the operation of the first reclining operation lever 54 is terminated, whereby the seat cushion 2 is locked again by the cushion lock device 60. The reclining device 50 has a known unlock canceller mechanism that maintains the unlocked state of the reclining device 50 when the seat back 1 is rotated forward to a predetermined angle relative to the vehicle floor. Therefore, the seat back 1 remains rotatable relative to the vehicle floor even after the operation of the first reclining operation lever 54 is completed. Through the above series of operations, the seat body is stored in the storage floor, and the vehicle seat S is switched to the stored state.

[0063] <Sheet tip-up operation> Next, the operation of moving the seat body from the stored state to the tip-up state will be described with reference to Figs. When the vehicle seat S is in the stowed state shown in FIG. 12, for example, the seat body is manually raised by the occupant, thereby switching the vehicle seat S to the tip-up state shown in FIG. At this time, since the cushion lock device 60 has locked the rotational movement of the seat cushion 2, by raising the seat back 1 upward, the seat cushion 2 can also be raised upward together with the seat back 1. In addition, when the seat is in the tip-up state, the occupant can operate the rail operating lever 43 to slide the upper rail 42 toward the rear of the seat relative to the lower rail 41, thereby ensuring an even larger luggage space in front of the seat.

[0064] When the vehicle seat S is switched to the tip-up state shown in FIG. 13, the seat back 1 returns to the same position as in the seatable state, and is locked in the upright position by the reclining device 50.

[0065] Finally, when moving the vehicle seat S from the tip-up state to a seatable state, the cushion operating lever 64 shown in FIG. 14 is pulled, whereby the second cushion cable 66 is pulled and the cushion locking device 60 is released from the locked state as shown in FIG. 14. When the cushion lock device 60 is released, the seat cushion 2 rotates downward with respect to the seat back 1 due to the biasing force of the spiral spring 63 . In addition, in the case where the spiral spring 63 is not required, for example, the passenger may manually rotate the seat cushion 2 downward. Through the above series of operations, the vehicle seat S is returned to the seatable state shown in FIG.

[0066] In addition to the above switching operations, the vehicle seat S can also be moved from a seatable state to a tip-up state. Specifically, when the seated occupant operates the cushion operating lever 64, the second cushion cable 66 is pulled, and the locked state of the cushion locking device 60 is released. Then, by rotating the seat cushion 2 upward relative to the seat back 1 against the biasing force of the spiral spring 63, the seat cushion 2 can be moved directly to the tip-up state. At this time, the locked state of the seat back 1 by the reclining device 50 is maintained.

[0067] <Other embodiments> In the above embodiment, the storage floor is formed in front of the vehicle seat S, but this is not particularly limited, and the storage floor may be formed behind the vehicle seat S. In that case, it is desirable that the vertical positional relationship between the seat back 1 and the seat cushion 2 be reversed when the seat body is stored on the storage floor.

[0068] In the above embodiment, the stored state of the seat body has been described as corresponding to the moving state in the claims, but without being particularly limited thereto, the tip-up state in this embodiment, etc., may of course correspond to the moving state. Alternatively, the state in which the seat body is moved by the rail device 40 from the normal position shown in FIG. 1 to a predetermined seat front position (predetermined seat rear position) may be regarded as the moving state.

[0069] In the above embodiment, as shown in FIG. 2, the support base 30 is fixed to the vehicle floor via a rail device 40, but this is not particularly limited and may be modified as appropriate, such as being fixed directly to the vehicle floor without the rail device 40. Alternatively, a support bracket (support member) (not shown) fixed onto the vehicle body floor may be used instead of the support base 30.

[0070] In the above embodiment, as shown in FIG. 4, the reinforcing wire 29 is disposed above the ottoman rotation shaft 71, but is not particularly limited thereto and may be disposed below the ottoman rotation shaft 71.

[0071] In the above embodiment, a storable vehicle seat for use in an automobile was described as a specific example, but the present invention is not limited to this and can be used as a vehicle seat for trains, buses, etc., as well as a vehicle seat for airplanes, ships, etc.

[0072] In this embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0073] S Vehicle seat 1 Seat back 1a, 2a Cushion pad 1b, 2b Skin material 2 Seat cushion 2c Storage recess 3 Headrest 4 Armrest 5 Buckle 10 Back Frame 11 Connecting bracket 20 Cushion Frame 21 Side frame 21a Frame side wall 21b Frame upper wall 21c Frame bottom wall 22 Front Frame 22a Frame side part 22b Frame center 23 Rear frame 24 Center Frame 25 Pan Frame 26 Base abutment member 26a Frame mounting part 26b Base contact part 27 Lever mounting bracket 27a Upper plate part (plate part) 27b Lower plate part 27c Connecting wire section 27ca 1st extension 27cb 2nd extension part 27cc 3rd extension 27d Lever attachment part 28 Floor contact member 29 Reinforcing wire (reinforcing member) 29a First reinforcing wire 29b Second reinforcing wire 30 Support Base 31 Side base part 32 Front base connection 33 Rear base connection 34 Reinforcement base part 35 Base cover 35a Cover protrusion 35b Cover receiving recess 40 Rail device 41 Lower rail 42 Upper Rail 43 Rail operation lever 50 Reclining device 51 Reclining unit 52 Back rotation shaft 53 Spiral Spring 54 First Recliner Control Lever 55 Second Recliner Control Lever 56 First Lycra Cable 57 No. 2 Lycra Cable 60 Cushion lock device (seat switching device) 61 Cushion lock body 62 Cushion pivot shaft 63 Spiral Spring 64 Cushion operation lever (switching operation lever) 65 1st cushion cable 66 Cable for second cushion 70 Ottoman device 71 Ottoman pivot shaft 71a Ottoman pad 71b Skin material 71c Mounting hole 72 Ottoman Pillar 73 Pillar support member 74 Pillar Guide 74a Front end flange 74b Rear flange 75 Ottoman locking member 76 Ottoman operating lever 80 Leg support member 80a Rear leg support 80b Forward leg support 81 Leg support frame 81a Leg connecting frame 81b Leg connection auxiliary frame part 82 Leg support pad 83 Skin material

Claims

1. A seat body having a seat back and a seat cushion, A vehicle seat that can be switched between a seating state in which a seat occupant can sit and a moving state in which the seat body is moved from the seating state, an ottoman device which is rotatably attached to a front portion of the seat cushion via an ottoman rotation shaft, has a leg support member for supporting the legs of a seated occupant from below, and is capable of rotating between a stored position where the leg support member is stored in the seat cushion side and an deployed position where the leg support member is rotated and moved toward the front of the seat from the stored position; a rail device that supports the seat body so as to be movable in a seat front-rear direction and locks the movement of the seat body, The ottoman operating lever of the ottoman device is disposed on one of the left and right side portions of the seat cushion, a rail operating lever of the rail device is disposed on the other side of the left or right side portion of the seat cushion; the rail operation lever and the ottoman rotation shaft are disposed in a position where they overlap with each other in a side view of the seat when the leg support member is in the stored position, The vehicle seat, wherein the ottoman operating lever is disposed at a position rearward of the ottoman pivot shaft in a side view of the seat.

2. 2. The vehicle seat according to claim 1, wherein the ottoman operation lever is disposed at a position rearward of the rail operation lever in a side view of the seat.

3. a storage recess for storing the ottoman device is formed in the seat cushion; 3. The vehicle seat according to claim 1, wherein the ottoman operation lever and the rail operation lever are disposed outboard of the storage recess in a seat width direction when viewed from the front of the seat.

4. A cushion frame that forms a skeleton of the seat cushion is provided, The cushion frame has left and right side frames arranged laterally in the seat width direction, The ottoman operating lever is disposed on one of the side frames, 4. The vehicle seat according to claim 1, wherein the rail operating lever is disposed on the other side frame.

5. The ottoman operating lever is disposed on an outer surface of the side frame, 5. The vehicle seat according to claim 4, wherein the rail operating lever is disposed on a front surface of the side frame.

6. The vehicle seat according to any one of claims 1 to 5, characterized in that an ottoman pillar supporting the leg support member is disposed in a portion between the ottoman operating lever and the rail operating lever in the seat width direction.

7. A reclining device that rotatably supports the seat back and locks the rotational movement of the seat back when the seat is in the seatable state, The seat body includes the seat back, the seat cushion, and a headrest. The seat cushion includes a cushion frame, a cushion pad placed on the cushion frame, and a cover material covering the cushion frame and the cushion pad, The vehicle seat according to any one of claims 1 to 6, characterized in that the rail device has left and right lower rails extending in a fore-and-aft direction of the seat, and left and right upper rails supported slidably along the left and right lower rails.

Images