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. Regarding do. [Background technology]

[0002] Conventionally, vehicle seats in which the seat back and seat cushion that make up the seat body can be switched from a seated state to a seated state in which an occupant can sit are already known, and among these are vehicle seats that further include an ottoman device that is attached to the front part 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 in three different configurations: a seatable state in which a sitter 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 axis (base member) attached to the seat cushion via a reinforcing member, and a leg support member (ottoman) rotatably attached via the ottoman rotation axis. The vehicle seat also has a switching operation lever (grip member) that is attached to the 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 rotation shaft and the leg support member are arranged 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] Japanese Patent Application Laid-Open No. 2015-127157 Summary of the Invention [Problem to be solved by the invention]

[0006] Special In the vehicle seat as in Patent Document 1, the seat is made compact, but the ottoman is not included. Place There has been a demand for a vehicle seat with improved mounting rigidity.

[0007] Book The object of the invention is to S To provide a vehicle seat with an ottoman device that has a simple structure and can prevent the seat from becoming large. Another object of the present invention is to provide a seat that is compact and has an ottoman attached. Place To provide a vehicle seat having improved mounting rigidity. [Means for solving the problem]

[0008] The above problem is solved by a vehicle seat of the present invention, which includes a cushion frame that forms the framework of a seat cushion, and an ottoman device that is attached to a front portion of the seat cushion and has a leg support member for supporting the legs of a seated occupant from below, wherein the ottoman device has an extension member that supports the leg support member so that the leg support member can move between a reference position where the leg support member is positioned on the seat cushion side and a protruding position where the leg support member protrudes further forward than the reference position, and an ottoman operating member that is attached to a frame portion of the cushion frame that is spaced outward from the extension member in the seat width direction and that operates the ottoman device. The cushion frame has left and right side frames disposed laterally in the seat width direction, and a plate-shaped pan frame disposed between the left and right side frames, and the ottoman operating member is disposed at a position overlapping a part of the pan frame in the seat front-rear direction when the vehicle seat is viewed from above. This is solved by:

[0009] At this time, the ottoman operating member is provided on the side portion of the cushion frame. , located at a position lower than the front portion of the pan frame That's good. In addition, the vehicle seat may include a rail device that supports the seat cushion so that it can move in the fore-and-aft direction of the seat, the rail device having a rail operating member that is attached to a front portion of the cushion frame, and the ottoman operating member that is spaced apart from the rail operating member in the fore-and-aft direction and the seat width direction. Preferably, the ottoman operating member and the rail operating member are attached to the cushion frame and disposed on different surfaces of the cushion frame. Preferably, the ottoman operating member and the rail operating member have different shapes and operate in different directions. The ottoman device further includes an ottoman locking member that locks the leg support member against forward and backward movement, and the ottoman operating member is connected to the ottoman locking member via a push rod and is positioned so as to overlap with the ottoman locking member in a side view of the seat. It would be good to place it in In addition, the cushion frame has left and right side frames arranged on the sides in the seat width direction, and a plate-shaped pan frame arranged between the left and right side frames, and the ottoman operating member is preferably arranged in a position overlapping with the pan frame in the seat fore-and-aft direction. Preferably, the leg support member is provided so as to be movable in the front-rear direction of the seat, and the ottoman operating member is disposed at a position outside the leg support member in the seat width direction. [Effects of the Invention]

[0016] According to the present invention, S It is possible to realize a vehicle seat with an ottoman device that has a simple configuration and can prevent the seat from becoming too large. According to the present invention, an ottoman device Woko Can be placed compactly 。 [Brief explanation of the drawings]

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

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to an embodiment of the present invention will now be described 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 rotating shaft, has a leg support member for supporting the legs of the seated person from below, and is capable of rotating the leg support member between a stored position and an deployed position, and the cushion operating lever is attached to the front portion of the seat cushion, and the cushion operating lever and the ottoman rotating shaft are arranged side by side in the seat width direction, and do not protrude further forward of the seat than the front end of the seat cushion in the seat fore-and-aft direction. The side of the seat back of a vehicle seat on which an occupant sits is the front side of the seat.

[0019] The vehicle seat S of this embodiment is, for example, a rear seat corresponding to the rear seat of a vehicle. Note that it can also be used as a middle seat in the second row in a vehicle having three rows of seats in the longitudinal 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 seated person can sit, a storage 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 recliner operating lever 54 at the top end of the seat body from the seat-ready state shown in FIG. 10, the seat body falls forward and folds (see FIG. 11), switching to the storage 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 from the storage state, the seat changes to the tip-up state shown in FIG. 13. Furthermore, when the seat occupant pulls the cushion operating lever 64 at the front end of the seat body (seat cushion) from the tip-up state (see FIG. 14), a part of the seat body (seat cushion) rotates downward, returning to the seat-ready state shown in FIG. 15. Details will be described later.

[0020] As shown in Figures 1 to 3, the 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 front-to-rear 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 the seatable state and 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 the seatable state, stored state, and tip-up state. Furthermore, the vehicle seat S is equipped with an ottoman device 70 that has a leg support member 80 that is attached so as to be rotatable relative to the front portion of the seat cushion 2 and supports the legs of the seated occupant from below, and that can be rotated between a stored position shown in Figure 1 in which the leg support member 80 is stored on the seat cushion 2 side, and an expanded position shown in Figure 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, which is 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 the 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 the 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 skeleton, and covering the cushion with a skin material 2b. The headrest 3 is a head support 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 surface 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 outer surface of the seat cushion 2 and the outer surface of the ottoman device 70 are configured to have a substantially integrated appearance. The storage recess 2c is formed at the front end of the seat cushion 2 so 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 upholstery material 1b. Therefore, the seating comfort of the seated person 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 Figure 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 thereof 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 journaled to the support base 30 in the seat width direction is provided to the lower end of the left-side connecting bracket 11.

[0023] As shown in Figures 3 to 5, the cushion frame 20 is 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 that is 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 an approximately C-shaped cross section. Specifically, it is mainly composed of a frame side wall portion 21a that extends 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 seat width direction. 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 operating 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 recliner operating lever 55 of the reclining device 50 is attached to the center portion of the outer surface. A cushion locking 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 different positions in the seat width direction from the left and right rail devices 40, specifically, offset to the right of the left and right rail devices 40. This offset arrangement ensures that space is secured 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 that are arranged to penetrate the side surfaces of the left and right side frames 21, respectively, and a frame center 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. 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 to the frame side portions 22a by welding while being in contact with the front surfaces of the left and right frame side portions 22a. Three pillar support members 73 are attached by welding to the bottom surface of the frame central portion 22b, and are arranged at predetermined intervals in the seat width direction.

[0027] The rear frame 23 is made up of multiple 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 positioned so as 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 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 center 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 addition, in the above frame configuration, as shown in Figure 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 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 component 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 contact with 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 contact with 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 crank shape bent so that its front portion protrudes upward more than its rear portion, and also functions to support the seat cushion 2 (cushion pad 2a) from below. The lower plate portion 27b is a box-shaped plate-like member formed so that its outer edge portion protrudes 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 extending portions 27ca extending in the fore-and-aft direction of the seat, left and right second extending portions 27cb bending continuously from the front ends of the left and right first extending portions 27ca and extending downward, and a third extending portion 27cc connecting the lower ends of the left and right second extending 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. The lever attachment portion 27d is formed with 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 inward of 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 to connect 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 stretched across 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 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 portions in the seat width direction. It comprises left and right side base portions 31 that are 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 that are attached to the upper surfaces of each side base portion 31. The left and right ends 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 product that covers the entire support base 30 and the rail device 40 from above. The base cover 35 has the function of protecting the support base 30 and the rail device 40 from the outside, as well as the 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 is provided on the side portions in the seat width direction and mainly comprises left and right cover protrusions 35a formed to protrude upward toward the seat cushion 2, and a cover storage recess 35b provided between the left and right cover protrusions 35a and formed to be recessed downward below the cover protrusions 35a, for storing contents. The cover protrusion 35a has the highest upper surface at the center portion in the seat front-rear direction, and the storage floor is located 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 comes into contact with the base abutment member 26 provided at the lower end of the seat cushion 2, causing the base abutment member 26 to slide (glide) 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 fixed to the vehicle floor and extending in the front-to-rear direction of the seat, left and right upper rails 42 supported so as to be slidable along the lower rails 41, a locking member (not shown) that locks the upper rails 42 to 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 installed on the top 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 engaged with the back frame 10 side and the other end is engaged with the support base 30 side. The first reclining cable 56 is pulled by the operation of the first reclining operating lever 54 and acts to switch the seat back 1 from a locked state to an unlocked state. The second reclining cable 57 is pulled by the operation of the second reclining operation lever 55 and acts 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 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 biasing 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 the spiral spring 63 has one end engaged with the back frame 10 side and the other end 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 of the cushion frame 20, in other words, at the end of the vehicle seat S on the vehicle door side. Therefore, an occupant can 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 operating 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-to-rear direction of the seat along the outer surface of the cushion frame 20, and is pulled by operating 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, and the cushion frame 20 can be folded toward the vehicle floor while being biased 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, the reclining device 50 is disposed on the right side of the seat body in the seat width direction, while the cushion locking device 60 is disposed on the left side of the seat body, as shown in Figure 3. This allows for a well-balanced arrangement of relatively large components, improving the overall balance of the seat body.

[0046] In addition, in the above configuration, as shown in Figure 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 journaled to the cushion frame 20 (front frame 22), and a leg support member 80 that rotates relative to the cushion frame 20 around the ottoman rotation shaft 71 as the rotation center. The leg support member 80 can be rotated between a stored position shown in FIG. 1 and an expanded 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. 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 housed 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 locking the leg support member 80 from moving back and forth; 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, and an expanded 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 order to support the legs of a seated occupant. In addition, the ottoman device 70 also has the function of moving the leg support member 80 back and forth between the reference position shown in Figures 1 and 2, in which the leg support member 80 is positioned on the seat cushion 2 side, and the protruding position shown in Figure 3, in which the leg support member 80 protrudes forward of the seat from the reference position, in order to support the legs according to the physique of the seated occupant.

[0049] As shown in FIG. 2, the ottoman rotation 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 skin 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. In addition, 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 at predetermined intervals in the seat width direction, and are used to mount a plurality of ottoman pillars 72, respectively.

[0051] As shown in Figures 2, 4, and 5, the ottoman pillar 72 is a pipe member with a circular cross section that extends in the fore-and-aft direction of the seat and is used to move 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. The front end of the ottoman pillar 72 is fitted into the mounting hole 71 c of the ottoman rotation shaft 71 , and the rear portion of the ottoman pillar 72 is inserted into the interior of the pillar support member 73 . In more 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, while 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 behind the seat 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 center portion 22b of the front frame 22, and the center pillar support member 73 is attached only to the frame center portion 22b.

[0053] As shown in Figures 4 and 5, the pillar guide 74 is 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 inserted into the internal space of the pillar support member 73 from the front side of the seat and attached. 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 rear end flange 74b of the pillar guide 74 come into 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 detachably engages with an engagement claw (not shown) provided on the inner peripheral surface of the pillar guide 74. A plurality of the engagement notches are formed at predetermined intervals in the front-to-rear direction of the seat. Therefore, the ottoman pillar 72 can move in a stepwise manner 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 seated occupant when seated.

[0056] As shown in Figures 4 and 5, the ottoman locking member 75 is made of a known locking member that locks the forward and backward movement of the ottoman pillar 72, and 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 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 continues to release the locked state of the ottoman pillar 72.

[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, which serves as a skeleton, and covering the frame 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 that 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 parts of each leg side frame, and a leg connecting auxiliary frame 81b connecting the center parts 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 switch rotation. Therefore, the leg support member 80 can be rotated in stages toward the front of the seat relative to the ottoman rotation shaft 71, and the leg support member 80 can be deployed from the storage position and fixed at a predetermined rotation 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 retracted position and fixed at a predetermined rotated position.

[0059] <Seat storage operation> Next, the operation of moving the seat body from the seatable state to the stowed 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 the locked state when indicated by a black circle, and in the 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 contact portion 26b provided at the lower end of the seat cushion 2 contacts the surface of the base cover 35 (cover protrusion 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 recliner operating lever 54, the first recliner cable 56 and the first cushion cable 65 are pulled, respectively, and the reclining device 50 and cushion locking device 60 are unlocked as shown in Figure 11. Then, the seat back 1 starts to rotate toward the front of the seat around the back rotation shaft 52 due to 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 contact member 28 provided on the seat cushion 2 can come into contact with 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, and the seat cushion 2 is locked again by the cushion lock device 60. The reclining device 50 has a known unlock canceller mechanism that keeps the reclining device 50 unlocked when the seatback 1 is rotated forward to a predetermined angle relative to the vehicle floor. Therefore, the seatback 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] <Seat 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 occupant manually raises the seat body upward, thereby switching the vehicle seat S to the tip-up state shown in FIG. At this time, since the cushion lock device 60 locks 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 even more 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 the seatable state, the cushion operating lever 64 shown in Figure 14 is pulled, which pulls the second cushion cable 66 and releases the locked state of the cushion locking device 60, as shown in Figure 14. When the cushion lock device 60 is released, the seat cushion 2 rotates downward relative to the seat back 1 due to the biasing force of the spiral spring 63. In addition, if the spiral spring 63 is not required, for example, the occupant may manually rotate the seat cushion 2 downward. Through the above series of operations, the vehicle seat S returns to the seatable state shown in FIG.

[0066] In addition to the above switching operation, the vehicle seat S can also be moved from the seatable state to the tip-up state. Specifically, when the seat occupant operates the cushion operating lever 64, the second cushion cable 66 is pulled, and the cushion locking device 60 is released from the locked state. 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 directly moved 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 this 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 in the storage floor.

[0068] In the above embodiment, the storage state of the seat body was described as corresponding to the moving state in the claims, but this is not particularly limited, and the tip-up state in this embodiment, etc., can of course also be considered to 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 considered to correspond to the moving state.

[0069] In the above embodiment, as shown in Figure 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 on the vehicle 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 arranged above the ottoman rotation shaft 71, but it may be arranged below the ottoman rotation shaft 71 without any particular limitation.

[0071] In the above embodiment, a storable vehicle seat used in an automobile was described as a specific example, but it is not limited to this and can also be used as a vehicle seat for trains, buses, etc., as well as 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 does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, 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 cushions 2c Storage recess 3 Headrest 4 armrests 5 Buckle 10 Back Frame 11 Connecting bracket 20 Cushion Frame 21 Side frame 21a Frame side wall 21b Upper wall of frame 21c Frame bottom wall 22 Front Frame 22a Frame side 22b Center of frame 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 part 27ca 1st extension 27cb 2nd extension part 27cc 3rd extension part 27d Lever mounting 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 part 33 Rear base connection 34 Reinforced base 35 base cover 35a Cover protrusion 35b Cover receiving recess 40 Rail Device 41 Lower rail 42 Upper Rail 43 Rail operating lever (Rail operating member) 50 Reclining device 51 Reclining unit 52 Back rotation shaft 53 Spiral Spring 54 First Recliner Operating Lever 55 Second Recliner Operating Lever 56 First Lycra Cable 57 Second 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 Cable for first cushion 66 Second cushion cable 70 Ottoman device 71 Ottoman rotation axis 71a Ottoman Pad 71b Skin material 71c mounting hole 72 Ottoman Pillar (extension member) 73 Pillar support member 74 Pillar Guide 74a Front end flange 74b Rear flange 75 Ottoman locking member 76 Ottoman operating lever (Ottoman operating member) 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. The cushion frame forms the backbone of the seat cushion, an ottoman device attached to a front portion of the seat cushion and having a leg support member for supporting the legs of a seated occupant from below, The ottoman device is an extension member that supports the leg support member so as to be movable between a reference position where the leg support member is positioned on the seat cushion side and a protruding position where the leg support member is protruded toward the front of the seat from the reference position; an ottoman operating member attached to a frame portion of the cushion frame that is spaced apart from the extension member toward the outside in the seat width direction, for operating the ottoman device; The cushion frame includes left and right side frames disposed laterally in the seat width direction, and a plate-shaped pan frame disposed between the left and right side frames, The vehicle seat is characterized in that the ottoman operating member is positioned in a position overlapping a portion of the pan frame in the front-to-rear direction of the seat when the vehicle seat is viewed from above.

2. 2. The vehicle seat according to claim 1, wherein the ottoman operating member is provided on a side portion of the cushion frame and is positioned lower than a front portion of the pan frame.

3. the vehicle seat includes a rail device that supports the seat cushion so as to be movable in a front-rear direction of the seat; the rail device has a rail operating member, The rail operating member is attached to a front portion of the cushion frame, 3. The vehicle seat according to claim 1, wherein the ottoman operating member is spaced apart from the rail operating member in the seat front-rear direction and the seat width direction.

4. 4. The vehicle seat according to claim 3, wherein the ottoman operating member and the rail operating member are attached to the cushion frame and are disposed on different surfaces of the cushion frame.

5. 5. The vehicle seat according to claim 3, wherein the ottoman operating member and the rail operating member have different shapes and operate in different directions.

6. The ottoman device has an ottoman locking member that locks the leg support member against forward and backward movement, The ottoman operating member is connected to the ottoman locking member via a push rod; 6. The vehicle seat according to claim 1, wherein the ottoman locking member is disposed at a position overlapping the ottoman locking member in a side view of the seat.

7. The leg support member is provided so as to be movable in the front-rear direction of the seat, 7. The vehicle seat according to claim 1, wherein the ottoman operating member is disposed at a position outside the leg support member in the seat width direction.

Images