Vehicle seat

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 .

Background Art

[0002] Conventionally, a vehicle seat in which a seat back and a seat cushion constituting a seat body can be switched from a seatable state in which a seated person can sit has already been known. Among them, there is a vehicle seat further provided with an ottoman device that is attached to the front portion of the seat cushion and can support the legs of the seated person from below (see, for example, Patent Document 1).

[0003] In the vehicle seat described in Patent Document 1, there are three types of seat arrangements: a seatable state in which a seated person can sit, a storage state in which the seat body is stored in a storage floor, and a tip-up state in which the seat body is flipped upward. It is a seat with an ottoman device. Specifically, the ottoman device is mainly composed of an ottoman rotation shaft (base member) attached to the seat cushion via a reinforcing member, and a leg support member (ottoman) rotatably attached via the ottoman rotation shaft. In addition, the vehicle seat is attached to the front portion of the seat cushion so as to protrude forward of the seat cushion, and has a switching operation lever (grip member) that is operated for seat arrangement. At this time, the ottoman rotation shaft and the leg support member are arranged so as to protrude forward of the seat with respect to the seat cushion and the switching operation lever in order to suppress interference with the switching operation lever.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Special In a vehicle seat such as in Patent Document 1, while attempting to reduce the size of the seat, a vehicle seat with improved ottoman mounting rigidity has been desired. Position of

[0007] This An object of the invention is System to provide a vehicle seat with an ottoman device that can suppress an increase in the size of the seat with a simple configuration. Another object of the present invention is Position of to provide a vehicle seat with improved ottoman mounting rigidity while attempting to reduce the size of the seat.

Means for Solving the Problems

[0008] According to the vehicle seat of the present invention, the above problems are solved by including a cushion frame that serves as a skeleton of the seat cushion, and an ottoman device attached to the front portion of the cushion frame and having a leg support member for supporting the legs of the seated person from below. The ottoman device includes 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 protrudes forward of the seat from the reference position, and a support member attached to the front portion of the cushion frame and supporting the extension member. The cushion frame includes left and right side frames arranged on the sides in the seat width direction, and a plate-shaped frame arranged between the left and right side frames. The support member is covered from above by the plate-shaped frame. 。

[0009] At this time, The cushion frame has a central frame that connects the left and right side frames, and the central frame is covered from above by the plate-like frame it is good. Also, the ottoman device has an ottoman operation lever, and it is preferable that the ottoman operation lever is arranged at a position overlapping the support member in the front-rear direction of the seat Also, a rail device is provided that supports the seat cushion so as to be movable in the front-rear direction of the seat and locks the moving operation of the seat cushion. The ottoman device has an ottoman operation lever, the rail device has a rail operation lever, and it is preferable that the plate-like frame is arranged between the ottoman operation lever and the rail operation lever in the width direction of the seat Also, it is preferable that the length of the plate-like frame in the front-rear direction of the seat is longer than the length of the support member in the front-rear direction of the seat Also, it is preferable that the length of the plate-like frame in the front-rear direction of the seat is longer than the length of the extension member in the front-rear direction of the seat Also, the extension member is an ottoman pillar that supports the leg support member so as to be movable back and forth. The support member is a pillar support member that supports the ottoman pillar, and it is preferable that the plate-like frame is a pan frame arranged between the left and right side frames

Advantages of the Invention

[0016] According to the present invention, System it is possible to realize a vehicle seat with an ottoman device that can suppress the enlargement of the seat with a simple configuration. Moreover, according to the present invention, the ottoman device To Co can be arranged in a compact manner 。

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0018] Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1-15. This embodiment is a vehicle seat having a seat body with a seat back and a seat cushion, which can be switched between a seatable state and a stored state, and has a cushion locking device having a cushion operation lever operated to switch the seat body between the seatable state and the stored state, and a ottoman device attached to the front portion of the seat cushion so as to be rotatable via an ottoman rotation axis and having a leg support member for supporting the legs of the seated person from below, and capable of rotating the leg support member between a storage position and a deployed position. The cushion operation lever is attached to the front portion of the seat cushion, and the cushion operation lever and the ottoman rotation axis are arranged side by side in the seat width direction, and do not protrude forward of the seat in the seat front-rear direction beyond the front end of the seat cushion. The present invention relates to a vehicle seat characterized by this. Note that the side where the occupant sits with respect to the seat back of the vehicle seat 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. It can also be used as the middle seat in the second row in a vehicle having three rows of seats in the vehicle front-rear direction. The vehicle seat S is a seat capable of three types of seat arrangements: a seatable state where a seated person can sit, a stored state where the seat body is stored in a storage floor, and a chip-up state where the seat body is flipped upward. Specifically, for the vehicle seat S, when the seated person pulls the first recline operation lever 54 at the upper end of the seat body from the seatable state shown in FIG. 10, the seat body tilts forward and folds (see FIG. 11), and switches to the stored state shown in FIG. 12 stored in the storage floor. Then, from the stored state, when the seated person manually raises the seat body upward, it switches to the tip-up state shown in FIG. 13. Further, when the seated person pulls the cushion operation 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 and returns to the seatable state shown in FIG. 15. Details will be described later.

[0020] As shown in FIGS. 1 - 3, the vehicle seat S mainly includes a seat body including 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 body floor and the support base 30, support the seat body so as to be movable in the front-rear direction, and lock the moving operation of the seat body. Also, as shown in FIG. 3, the vehicle seat S is connected to the support base 30 so that the seat back 1 can rotate, and a reclining device 50 that locks the rotation operation of the seat back 1 in the seatable state and the tip-up state, and the seat cushion 2 is connected to the seat back 1 so that it can rotate, and a cushion lock device 60 that locks the rotation operation of the seat cushion 2 in the seatable state, the stored state, and the tip-up state. Furthermore, the vehicle seat S has a leg support member 80 that is attached to the front part of the seat cushion 2 so as to be rotatable and supports the legs of the seated person from below, and an ottoman device 70 that can be rotated between the storage position shown in FIG. 1 where the leg support member 80 is stored on the seat cushion 2 side and the deployed position shown in FIG. 2 where it is rotated and moved to the front side of the seat from the storage position. Note that a concave storage floor formed at a position lower than the vehicle body floor is provided on the front side of the vehicle seat S.

[0021] As shown in FIG. 1, the seat back 1 is a backrest portion that supports the occupant's back from behind. A cushion pad 1a is placed on a back frame 10 shown in FIG. 3, which serves as a skeleton, and is covered with a skin material 1b. The seat cushion 2 is a seating portion that supports the occupant from below. A cushion pad 2a is placed on a cushion frame 20 shown in FIG. 3, which serves as a skeleton, and is covered with a skin material 2b. The headrest 3 is a head portion that supports the occupant's head from behind. A cushion pad is placed on a pillar (not shown) that serves as a core material and is covered with a skin. At the front end of the seat cushion 2 and at the central portion in the seat width direction, as shown in FIG. 2, a storage recess 2c for storing the ottoman device 70 (ottoman rotation shaft 71) is formed. And it is configured to have a substantially integrated appearance from the outer surface of the seat cushion 2 to the outer surface of the ottoman device 70. Further, the storage recess 2c is formed such that the lower portion thereof is recessed rearward of the seat at the front end of the seat cushion 2, and the seating surface (upper surface) of the seat cushion 2 is also ensured at the front end portion of the seat cushion 2. That is, the cushion pad 1a is also placed on the front end portion of the seat cushion 2 and covered with the skin 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 FIG. 3, the back frame 10 is a rectangular frame body that serves as the skeleton of the seat back 1. On the outer surface of the back frame 10 in the seat width direction and at the lower portion thereof, left and right connection brackets 11 for connecting to the support base 30 are attached. The connection bracket 11 is formed of an arcuate sheet metal member that extends in the vertical direction. The upper end of the connection bracket 11 is attached to the back frame 10, and the lower end thereof is attached to the support base 30. At the lower end of the right connecting bracket 11, a reclining device 50 (reclining main body 51) for rotatably connecting the back frame 10 to the support base 30 is attached. At the lower end of the left connecting bracket 11, a back rotation shaft 52 pivotally supported by the support base 30 in the seat width direction is provided.

[0023] As shown in FIGS. 3 to 5, the cushion frame 20 is composed of a rectangular frame body that forms the skeleton of the seat cushion 2, and includes left and right side frames 21 disposed laterally in the seat width direction, a front frame 22 connecting the front portions of the side frames 21, a pipe-shaped rear frame 23 connecting the rear portions of the side frames 21, a wire-shaped central frame 24 connecting the central portions of the side frames 21, and a pan frame 25 as a plate-shaped frame connecting 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 having a substantially C-shaped cross section that is long in the seat front-rear direction. Specifically, it mainly consists 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 in the vertical direction of the frame side wall portion 21a and extend outward in the seat width direction. At the front end portion of the right side frame 21, a cushion operation lever 64 is attached via a lever attachment bracket 27. At the front end portion of the left side frame, a rail operation lever 43 is attached via a lever attachment bracket 27. Also, at the front portion on the outer surface in the seat width direction of the right side frame 21 (frame side wall portion 21a), an ottoman operation lever 76 of the ottoman device 70 is attached. At the central portion on the outer surface, a second reclining operation lever 55 of the reclining device 50 is attached. And at the rear end portion on the outer surface in the seat width direction of the left side frame 21 (frame side wall portion 21a), a cushion lock device 60 is attached.

[0025] In addition, the left and right side frames 21 are offset from the left and right rail devices 40 in the sheet width direction, specifically, offset to the right of the left and right rail devices 40. By this offset arrangement, a space can be secured on the outer surface of the left side frame 21. In this space, in addition to the cushion lock device 60, the armrest 4 shown in FIG. 1 and the buckle 5 for the seat belt are attached. As a result, an increase in the size of the vehicle seat S in the sheet width direction can be suppressed.

[0026] As shown in FIGS. 4-5, the front frame 22 is composed of a composite member formed by combining a plurality of square pipes and extends in the sheet 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 sheet width direction and is arranged to protrude forward of the seat from the frame side portions 22a. An ottoman lock member 75 is attached to the rear surface of the inner end of the frame side portion 22a on the side of the ottoman operation lever 76 among the left and right frame side portions 22a. In addition, a pillar support member 73 for supporting the ottoman pillar 72 is attached by welding to the bottom surface of the inner end of the frame side portion 22a. The frame central portion 22b is attached to the frame side portions 22a by welding in a state of abutting against the front surfaces of the left and right frame side portions 22a. Three pillar support members 73 arranged at a predetermined interval in the sheet width direction are attached by welding to the bottom surface of the frame central portion 22b.

[0027] The rear frame 23 is composed of a plurality of pipe members arranged at intervals in the front-rear direction of the seat. On the bottom surface of the side portion of the rear frame 23 on the side where the reclining device 50 and the ottoman device 70 are attached, a base contact member 26 is attached so as to contact the support base 30 (base cover 35) in the seatable state. The base contact member 26 is composed of a frame attachment portion 26a attached by welding in a state of being sandwiched between the rear frames 23, and a resin base contact portion 26b that fits into a part of the rear frame 23 and the frame attachment portion 26a and protrudes downward from the frame attachment portion 26a.

[0028] In the above frame configuration, as shown in FIG. 4, in the front frame 22, the portion where the frame side portion 22a and the frame central portion 22b are connected supports the left and right pillar support members 73. Therefore, it is possible to secure the support area of the left and right pillar support members 73 by the front frame 22, and it is possible to increase the support rigidity of the pillar support members 73 by the cushion frame 20.

[0029] Also, in the above frame configuration, as shown in FIG. 5, in the front frame 22, the portion where the frame side portion 22a and the frame central portion 22b are connected is attached to the pan frame 25 by welding. Therefore, it is possible to increase the support rigidity of the pan frame 25 by the front frame 22.

[0030] Also, in the above frame configuration, as shown in FIG. 5, where the base contact member 26 and the pan frame 25 are connected to the rear frame 23, the base contact member 26 is further arranged at a position overlapping a part of the pan frame 25 in the vertical direction. Therefore, it is possible to increase the support rigidity of the base contact member 26 and the pan frame 25.

[0031] As shown in FIGS. 4 to 7, the lever attachment bracket 27 is a member for attaching the cushion operation lever 64 and the rail operation lever 43 to the cushion frame 20. It is attached to the front end portion of the side frame 21 and is disposed above the ottoman rotation axis. As shown in FIGS. 6 and 7, the lever attachment bracket 27 is attached in a state of abutting against the frame upper wall portion 21b of the side frame 21, and has an upper plate portion 27a extending forward of the seat. The lower plate portion 27b is attached in a state of abutting against the frame side wall portion 21a and the frame bottom wall portion 21c and extends forward of the seat. The connecting wire portion 27c connects the upper plate portion 27a and the lower plate portion 27b. The lever attachment portion 27d for attaching the cushion operation lever 64 (rail operation lever 43) is attached in a state of being surrounded by the connecting wire portion 27c. It is mainly composed of these parts.

[0032] The upper plate portion 27a is a plate-like member having a crank shape in which the front portion thereof is bent so as to project upward from the rear portion, and also functions 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 in which the outer edge portion thereof is formed to project upward. A floor contact member 28 that can contact the storage floor when the seat body moves to the storage state is attached to the bottom surface of the lower plate portion 27b. The connecting wire portion 27c is composed of left and right first extending portions 27ca extending in the front-rear direction of the seat, left and right second extending portions 27cb that are continuously bent from the front end portions of the left and right first extending portions 27ca and extend downward, and a third extending portion 27cc that connects the lower end portions of the left and right second extending portions 27cb. The lever attachment portion 27d is attached to the left and right second extending portions 27cb and the third extending portion 27cc by welding in a state of being surrounded by them. Note that an attachment hole for attaching the cushion operation lever 64 (rail operation lever 43) is formed in the lever attachment portion 27d.

[0033] As shown in FIGS. 6 and 7, the floor contact member 28 is formed of a known resin material having elasticity and is disposed inside the outer end of the seat cushion 2 (cushion frame 20) in the seat width direction. Further, the floor contact member 28 and the cushion operation lever 64 (rail operation lever 43) are arranged at the same position as each other in the seat width direction.

[0034] In the above configuration, as shown in FIGS. 4 and 5, a reinforcing wire 29 for connecting the left and right lever mounting brackets 27 and the front frame 22 is provided to ensure the mounting rigidity of the left and right lever mounting brackets 27. Specifically, the reinforcing wire 29 has a substantially U-shaped first reinforcing wire 29a that connects the left and right lever mounting brackets 27 (upper plate portions 27a), a central portion in the seat width direction of the first reinforcing wire 29a, and a substantially inverted U-shaped second reinforcing wire 29b that is bridged between 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 FIG. 3, the support base 30 is a member that supports the seat body, and includes left and right side base portions 31 provided on side portions in the seat width direction and arranged along the left and right rail devices 40, a front base connecting portion 32 that connects front portions of the respective side base portions 31, a rear base connecting portion 33 that connects rear portions of the respective side base portions 31, and left and right reinforcing base portions 34 attached to upper surfaces of the respective side base portions 31. Both left and right end portions 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 product that covers the entire support base 30 and the rail device 40 from above. In addition to the function of protecting the support base 30 and the rail device 40 from the outside, the base cover 35 has a function of guiding the movement of the seat body (seat cushion 2) when the seat body switches from the seatable state to the storage state. The base cover 35 is provided at the lateral portions in the seat width direction, and mainly includes left and right cover protruding portions 35a formed to protrude upward toward the seat cushion 2, and a cover storage recess 35b provided between the left and right cover protruding portions 35a and formed to be recessed downward from the cover protruding portions 35a for storing articles. The cover protruding portion 35a has an upper surface with the central portion in the front-rear direction of the seat being the highest, and a storage floor is arranged on the extension line of the inclined surface in front of the seat. When the seat body moves from the seatable state to the storage state, as shown in FIG. 9, the cover protruding portion 35a abuts against a base contact member 26 provided at the lower end portion of the seat cushion 2, and has a function of sliding (skidding) the base contact member 26 toward the storage floor side. That is, the seat cushion 2 is configured to be smoothly guided by the base cover 35 toward the storage floor.

[0037] As shown in FIG. 3, the rail device 40 is disposed between the seat body and the vehicle body floor in the vertical direction, fixed to the vehicle body floor, and mainly includes left and right lower rails 41 extending in the front-rear direction of the seat, left and right upper rails 42 slidably supported along the lower rails 41, a lock member (not shown) for locking the upper rails 42 so as not to slide relative to the lower rails 41, and a rail operation lever 43 operated to release the locked state of the lock member. The support base 30 is installed on the upper surfaces of the left and right upper rails 42. The rail operation lever 43 is attached at 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, suppressing interference with the cushion frame 20 in the seat width direction. The reclining device 50 mainly includes a reclining body 51 that is driven when rotating the back frame 10, a back rotation shaft 52, a spiral spring 53 that biases the back frame 10 to rotate forward about the back rotation shaft 52, a first reclining operation lever 54 shown in FIG. 1 and a second reclining operation lever 55 shown in FIG. 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 can switch the state of the back frame 10 between a locked state fixed to the support base 30 and an unlocked state rotatable with respect to the support base 30. The back rotation shaft 52 is pivotally 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 locked to the back frame 10 side and the other end is locked to the support base 30 side. The first reclining cable 56 is pulled by the operation of the first reclining operation lever 54 and acts to switch the seat back 1 from the locked state to the unlocked state. Also, 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 the locked state to the unlocked state.

[0040] In the above configuration, the reclining device 50 locks the back frame 10 in the upright posture of FIG. 10, releases the locked state when the first reclining operation lever 54 (second reclining operation lever 55) is operated, and rotates the back frame 10 forward by the biasing force of the spiral spring 53 to fold it toward the vehicle body floor side (see FIG. 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 lock device 60 mainly includes a lock body 61 for locking the rotation operation of the cushion frame 20, a cushion rotation shaft 62, a spiral spring 63 for biasing the cushion frame 20 downward about the cushion rotation shaft 62, a cushion operation lever 64 operated to release the locked state of the cushion frame 20, a first cushion cable 65 connecting the above-described first recliner operation lever 54 and the lock body 61, and a second cushion cable 66 connecting the cushion operation lever 64 and the lock body 61.

[0042] The cushion rotation shaft 62 is pivotally supported on the back frame 10 side and the cushion frame 20 side in the seat width direction. One end of the spiral spring 63 is locked to the back frame 10 side, and the other end is locked to the cushion frame 20 side. Note that the spiral spring 63 may be unnecessary. The cushion operation 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, that is, at the vehicle door side end portion of the vehicle seat S. Therefore, the occupant can operate the cushion operation lever 64 from outside the vehicle with the vehicle door open.

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

[0044] The cushion lock device 60 locks the cushion frame 20 in the horizontal posture shown in FIG. 10, releases the locked state in conjunction with the back frame 10 when the first reclining operation lever 54 is operated, and can fold the cushion frame 20 toward the vehicle body floor side while urging it forward by the biasing force of the spiral spring 63 (see FIG. 12). Further, when the cushion operation lever 64 is operated in the seatable state, the cushion lock device 60 releases the locked state of the cushion frame 20, and by lifting the cushion frame 20 upward against the biasing force of the spiral spring 63, it can be moved to the tip-up state shown in FIG. 13. Then, when the cushion operation lever 64 is operated again in the tip-up state (see FIG. 14), the cushion frame 20 can be rotated downward with respect to the back frame 10 by the biasing force of the spiral spring 63 and returned to the seatable state shown in FIG. 15.

[0045] In the above configuration, as shown in FIG. 3, while the reclining device 50 is arranged on the right side in the seat width direction of the seat body, the cushion lock device 60 is arranged on the left side of the seat body. Therefore, relatively large components can be arranged in a well-balanced manner, and the balance of the entire seat body is improved.

[0046] Also, in the above configuration, as shown in FIG. 5, the cushion operation lever 64 and the reclining body 51 are arranged inside the outer end of the seat cushion 2 in the seat width direction and at the same position 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 arranged between the cushion operation lever 64 and the rail operation lever 43 in the seat width direction. The ottoman device 70 includes an ottoman rotation shaft 71 that extends in the sheet width direction and is pivotally supported with respect to the cushion frame 20 (front frame 22), and a leg support member 80 that rotates about the ottoman rotation shaft 71 with respect to the cushion frame 20. The device is capable of rotating the leg support member 80 between the storage position shown in FIG. 1 and the deployed position shown in FIG. 2, which is rotationally moved to the front side of the sheet with respect to the storage position. Further, the ottoman device 70 includes an ottoman pillar 72 that is attached to the rear end of the ottoman rotation shaft 71 and supports the leg support member 80 so as to be movable back and forth, a pillar support member 73 that is attached to the bottom surface of the front frame 22 to support the ottoman pillar 72, a pillar guide 74 that is attached in a state of being housed inside the pillar support member 73 and guides the ottoman pillar 72, an ottoman lock member 75 that is attached to the rear surface of the front frame 22 and locks the back-and-forth movement of the leg support member 80, and an ottoman operation lever 76 that is operated to release the locked state of the ottoman lock member 75.

[0048] That is, the ottoman device 70 has a function of rotating the leg support member 80 between the storage position shown in FIG. 1, where the leg support member 80 is stored on the side of the seat cushion 2 to support the legs of the seated person, and the deployed position shown in FIGS. 2 and 3, which is rotationally moved to the front side of the sheet with respect to the storage position. Further, the ottoman device 70 also has a function of moving the leg support member 80 back and forth between the reference position shown in FIGS. 1 and 2, where the leg support member 80 is positioned on the side of the seat cushion 2 to support the legs according to the physique of the seated person, and the protruding position shown in FIG. 3, which protrudes to the front side of the sheet with respect to the reference position.

[0049] As shown in FIG. 2, the ottoman rotation shaft 71 is formed of a pipe member having a circular longitudinal cross-section that extends in the sheet width direction. The pipe member is surrounded by an ottoman pad 71a, and the pipe member and the ottoman pad 71a are covered with a skin material 71b. As shown in FIGS. 1 and 2, the Ultraman rotation shaft 71 is disposed between the cushion operation lever 64 and the rail operation lever 43 in the sheet width direction, and the Ultraman rotation shaft 71, the cushion operation lever 64, and the rail operation lever 43 are arranged side by side in the sheet width direction. Further, the Ultraman rotation shaft 71, the cushion operation lever 64, and the rail operation lever 43 are arranged so as not to protrude forward of the sheet from the front end portion of the seat cushion 2 in the sheet front-rear direction.

[0050] Both end portions of the Ultraman rotation shaft 71 in the sheet width direction penetrate through the leg support member 80 (leg support frame 81). Further, a plurality of attachment holes 71c for attaching a plurality of Ultraman pillars 72 are formed at the rear end of the Ultraman rotation shaft 71 at a predetermined interval in the sheet width direction.

[0051] As shown in FIGS. 2, 4, and 5, the Ultraman pillar 72 is a pipe member having a circular cross-sectional shape in the longitudinal direction for moving the leg support member 80 and the Ultraman rotation shaft 71 in the sheet front-rear direction with respect to the seat cushion 2, and extends in the sheet front-rear direction. The front end portion of the Ultraman pillar 72 is fitted into the attachment hole 71c of the Ultraman rotation shaft 71, and the rear portion of the Ultraman pillar 72 is inserted into the inside of the pillar support member 73. Specifically, when the leg support member 80 is in the protruding position, the rear portion of the Ultraman pillar 72 is supported by the pillar support member 73, while when the leg support member 80 is in the reference position, the front portion of the Ultraman pillar 72 is supported by the pillar support member 73 and the rear portion thereof protrudes rearward of the sheet from the pillar support member 73. That is, when the leg support member 80 is in the reference position, the Ultraman pillar 72 and the pillar guide 74 housed in the pillar support member 73 are in contact with each other.

[0052] The pillar support member 73 is a pipe member having a rectangular longitudinal cross section that is long in the front-rear direction of the seat, 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 portion 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 FIGS. 4 and 5, the pillar guide 74 is a hollow rod-shaped body having a rectangular longitudinal cross section, and is a member for inserting and supporting the ottoman pillar 72 in the internal space. The pillar guide 74 itself is inserted and attached from the front side of the seat into the internal space of the pillar support member 73. Specifically, when the pillar guide 74 is housed to the deepest part of 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 the rear end of the pillar support member 73, respectively. In other words, the front end flange 74a and the rear end flange 74b sandwich the pillar support member 73 therebetween.

[0054] In the above configuration, as shown in FIGS. 4 and 5, on the outer peripheral surface of the ottoman pillar 72, in the portion inserted into the pillar guide 74, engaging notches (not shown) are formed so as to be detachably engaged with engaging claws (not shown) provided on the inner peripheral surface of the pillar guide 74. A plurality of the engaging 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 with respect 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] Also, in the above configuration, as shown in FIG. 4, the ottoman pillar 72, the pillar support member 73, and the pillar guide 74 are arranged at a position lower than the front frame 22. Therefore, it is possible to suppress the discomfort when the seated person is seated.

[0056] As shown in FIGS. 4 and 5, the ottoman lock member 75 is composed of a known lock member, locks the forward and backward movement of the ottoman pillar 72, and can release the locked state by operating the ottoman operation lever 76. Specifically, the ottoman lock member 75 normally locks the forward and backward movement of the right ottoman pillar 72. When the ottoman operation lever 76 is pushed in, a push rod (not shown) connected to the ottoman operation lever 76 acts on the ottoman lock member 75. As a result, the ottoman lock member 75 releases the locked state of the right ottoman pillar 72. That is, while the ottoman operation lever 76 is being operated, the ottoman lock member 75 continuously releases the locked state of the ottoman pillar 72.

[0057] As shown in FIG. 2, the leg support member 80 is configured by placing leg support pads 82 on a rectangular frame-shaped leg support frame 81 serving as a skeleton and covering it with a skin material 83. As shown in FIGS. 2 and 5, the leg support member 80 includes a rear leg support portion 80a supported by the ottoman rotation shaft 71, and a front leg support portion 80b that is located in front of the seat relative to the rear leg support portion 80a and is formed 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 mainly composed of left and right leg side frames (not shown) disposed on the sides in the seat width direction to which the ottoman rotation shaft 71 is attached, a leg connection frame 81a connecting the front portions of the respective leg side frames, and a leg connection auxiliary frame 81b connecting the central portions of the respective leg side frames.

[0058] In the above configuration, the leg support member 80 is attached via a ratchet mechanism that can be rotationally switched with respect to the ottoman rotation shaft 71. Therefore, the leg support member 80 can rotate stepwise toward the front side of the seat with respect to the ottoman rotation axis 71, and the leg support member 80 can be moved from the storage position to the deployed position and fixed at a predetermined rotation position. Also, the leg support member 80 can rotate stepwise toward the rear side of the seat with respect to the ottoman rotation axis 71, and the leg support member 80 can be moved from the deployed position to the storage position and fixed at a predetermined rotation position.

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

[0060] When the vehicle seat S is in the seatable state shown in FIG. 10, the seat back 1 is supported by the support base 30 and locked in the upright posture by the reclining device 50. Further, 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 is in contact with the surface of the base cover 35 (cover protruding portion 35a).

[0061] When moving the vehicle seat S from the seatable state to the storage 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 seated person operates the first reclining operation lever 54, the first reclining cable 56 and the first cushion cable 65 are respectively pulled, and as shown in FIG. 11, the locked states of the reclining device 50 and the cushion lock device 60 are released. Then, the seat back 1 starts to rotate forward around the back rotation shaft 52 so as to move the seat cushion 2 to the storage floor by the biasing force of the spiral spring 53.

[0062] Then, 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 contact the surface of the storage floor. Further, when the seat back 1 and the seat cushion 2 reach the storage floor, by ending the operation of the first reclining operation lever 54, the seat cushion 2 will be locked again by the cushion locking device 60. Note that the reclining device 50 has a known unlocking canceling mechanism that maintains the unlocked state when the seat back 1 rotates forward relative to the vehicle body floor by a predetermined angle. Therefore, even after the operation of the first reclining operation lever 54 is completed, the seat back 1 can rotate relative to the vehicle body floor. By 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, an operation of moving the seat body from the stored state to the tip-up state will be described with reference to FIGS. 12 and 13. When the vehicle seat S is in the stored state shown in FIG. 12, for example, when the occupant manually raises the seat body upward, it switches to the tip-up state shown in FIG. 13. At this time, since the cushion locking device 60 locks the rotation operation of the seat cushion 2, by raising the seat back 1 upward, the seat cushion 2 can also be raised upward integrally. Note that in the tip-up state, when the occupant operates the rail operation lever 43 and slides the upper rail 42 rearward of the seat with respect to the lower rail 41, a wider luggage compartment space can be secured on the front side of the seat.

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

[0065] Finally, when moving the vehicle seat S from the tip-up state to the seatable state, by operating the cushion operation lever 64 shown in FIG. 14, the second cushion cable 66 is pulled, and as shown in FIG. 14, the locked state of the cushion locking device 60 is released. The seat cushion 2 rotates downward with respect to the seat back 1 by the biasing force of the spiral spring 63 as the cushion locking device 60 is released. In addition, when the spiral spring 63 is configured to be unnecessary, for example, the occupant may manually rotate the seat cushion 2 downward. By the above series of operations, the vehicle seat S returns to the seatable state shown in FIG. 15.

[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 occupant operates the cushion operation 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 against the biasing force of the spiral spring 63 with respect to the seat back 1, it 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 remains maintained.

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

[0068] In the above embodiment, the storage state of the seat body was described as corresponding to the moving state in the claims. However, it is not particularly limited, and of course, the chip-up state or the like of the present embodiment may correspond to the moving state. In addition, a state in which the seat body is moved from the normal position shown in FIG. 1 to a predetermined seat front position (predetermined seat rear position) by the rail device 40 may be regarded as corresponding to the moving state.

[0069] In the above embodiment, as shown in FIG. 2, the support base 30 is fixed to the vehicle body floor via the rail device 40. However, it is not particularly limited, and it may be appropriately changed, for example, by eliminating the rail device 40 and directly fixing it to the vehicle body floor. Alternatively, a support bracket (support member) (not shown) fixed on the vehicle body floor may be employed 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. However, it is not particularly limited, and it may be disposed below the ottoman rotation shaft 71.

[0071] In the above embodiment, as a specific example, a stowable vehicle seat used in an automobile was described. However, it is not particularly limited, and in addition to vehicle seats for trains, buses, etc., it can also be used as vehicle seats for airplanes, ships, etc.

[0072] In the present embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating the understanding of the present invention and does not limit the present invention. The present invention can be changed and improved without departing from its gist, and it goes without saying that equivalents of the present invention are included therein.

Description of Symbols

[0073] Seat for vehicle 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 part 21b Frame upper wall part 21c Frame bottom wall part 22 Front frame 22a Frame side part 22b Frame central part 23 Rear frame 24 Central frame 25 Pan frame (Plate-like frame) 26 Base contact member 26a Frame attachment part 26b Base contact part 27 Lever attachment bracket 27a Upper plate part (plate part) 27b Lower plate part 27c Connecting wire part 27ca First extension part 27cb Second extension part 27cc Third extension part 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 connecting part 33 Rear base connecting part 34 Reinforcing base part 35 Base cover 35a Cover protruding part 35b Cover accommodating recess 40 Rail device 41 Lower rail 42 Upper rail 43 Rail operation lever 50 Reclining device 51 Reclining body 52 Back rotation shaft 53 Volute spring 54 First reclining operation lever 55 Second reclining operation lever 56 First reclining cable 57 Second reclining cable 60 Cushion lock device (seat switching device) 61 Cushion lock body 62 Cushion rotation shaft 63 Volute spring 64 Cushion operation lever (switching operation lever) 65 First cushion cable 66 Second cushion cable 70 Ottoman device 71 Ottoman rotation shaft 71a Ottoman pad 71b Skin material 71c Mounting hole 72 Ottoman pillar (Extension member) 73 Pillar support member (Support member) 74 Pillar guide 74a Front flange 74b Rear flange 75 Ottoman lock member 76 Ottoman operation lever 80 Leg support member 80a Rear leg support part 80b Front leg support part 81-foot support frame 81a leg connection frame part 81b leg connection auxiliary frame part 82 leg support pad 83 skin material

Claims

1. A seat cushion frame serving as a skeleton of a seat cushion, and an ottoman device attached to a front portion of the cushion frame and having a leg support member for supporting a seated person's legs from below, wherein the ottoman device has 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 protrudes forward of the seat from the reference position, and a support member attached to a front portion of the cushion frame for supporting the extension member, wherein the cushion frame has left and right side frames disposed laterally in the seat width direction and a plate-like frame disposed between the left and right side frames, and the support member is covered from above by the plate-like frame, a vehicle seat characterized by this.

2. The cushion frame has a central frame connecting the left and right side frames, and the central frame is covered from above by the plate-like frame, the vehicle seat according to Claim 1, characterized by this.

3. The ottoman device has an ottoman operation lever, and the ottoman operation lever is disposed at a position overlapping the support member in the front-rear direction of the seat, the vehicle seat according to Claim 1 or 2, characterized by this.

4. A rail device that supports the seat cushion so as to be movable in the front-rear direction of the seat and locks the moving operation of the seat cushion, the ottoman device has an ottoman operation lever, the rail device has a rail operation lever, and the plate-like frame is disposed between the ottoman operation lever and the rail operation lever in the seat width direction, the vehicle seat according to any one of Claims 1 to 3, characterized by this.

5. The length of the plate-like frame in the front-rear direction of the seat is longer than the length of the support member in the front-rear direction of the seat, the vehicle seat according to any one of Claims 1 to 4, characterized by this.

6. The length of the plate-like frame in the front-rear direction of the seat is longer than the length of the extension member in the front-rear direction of the seat, the vehicle seat according to any one of Claims 1 to 5, characterized by this.

7. The extension member is an ottoman pillar that supports the leg support member so as to be movable back and forth, The support member is a pillar support member that supports the ottoman pillar, The vehicle seat according to any one of claims 1 to 6, wherein the plate-shaped frame is a pan frame disposed between the left and right side frames.

Images