JP7280499B2 - vehicle seat - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of switching a seat body having a seat back and a seat cushion from a normal state.

Conventionally, there is already known a vehicle seat in which a seat back and a seat cushion, which constitute a seat body, can be stored at a position lower than the floor of the vehicle body. There is a vehicle seat that can be stored on a storage floor (see, for example, Patent Document 1).

The vehicle seat described in Patent Document 1 includes a seat rotation shaft (floor-side support shaft) that is attached to the floor of the vehicle body and rotatably supports the seat back, and a seat cushion that is rotatable with respect to the seat back. and a cushion lock device (latch device) that connects and locks the pivotal movement of the seat cushion when the seat body is in a normal state in which the seat body can seat the seated occupant.
When the seat body is stored, the seat back rotates with respect to the vehicle body floor so as to move the seat cushion to the storage floor, and the seat body can be stored on the storage floor.
Further, the vehicle seat is configured to be switchable from a normal state in which a passenger can sit on the seat to a tip-up state in which the seat cushion is flipped upward.

JP 2018-52435 A

By the way, a vehicle seat capable of storing a seat body, such as that disclosed in Patent Document 1, has a leg member that supports the seat cushion from below in order to secure a space (storage space, etc.) below the seat cushion. Therefore, if an excessive load exceeding a predetermined amount is applied to the vehicle seat at the time of a frontal collision of the vehicle, for example, there is a possibility that the seating load from the seated person cannot be received appropriately.
In order to favorably receive the seating load, it is conceivable to increase the rigidity of the cushion lock device, but in that case, the structure of the cushion lock device may become large.
Therefore, there is a vehicle seat that normally secures a space between the seat cushion and the vehicle body floor, and can preferably receive the seating load of the occupant when a load exceeding a predetermined level is applied to the vehicle seat. was desired.
Further, there has been a demand for a vehicle seat that can receive a seating load with a simple structure while avoiding an increase in the size of the cushion lock device.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to be able to receive a seating load from a occupant when a predetermined load or more is applied, and to construct a seat body with a simple structure. To provide a vehicle seat which can be switched from a normal state.
Another object of the present invention is to provide a vehicle seat that normally secures a space between the seat cushion and the floor of the vehicle body, and can preferably receive the seating load when an excessive load is applied. That's what it is.

According to the vehicle seat of the present invention, the vehicle seat includes a seat body having a seat back and a seat cushion rotatably connected to the seat back, and the seat body enables the seated person to sit on the seat. a normal state and a moving state in which the seat body is moved from the normal state, wherein the seat cushion and the vehicle body floor are arranged close to one side, and the vehicle seat The problem is solved by providing a support member that is deployed on the other side of the seat cushion and the vehicle body floor to support the seat cushion from below when a predetermined load or more is applied to the seat.
With the above configuration, it is possible to realize a vehicle seat that can receive the seating load of a seated person when a load greater than or equal to a predetermined amount is applied, and that can switch the seat body from the normal state with a simple configuration.
In addition, it is possible to realize a vehicle seat that can secure a space between the seat cushion and the vehicle body floor in a normal state, and can appropriately receive the seating load when an excessive load is applied.

At this time, the moving state is a retracted state in which the seat body is retracted and moved toward the vehicle body floor, and the support member is arranged to be retracted toward the seat cushion and the vehicle seat. It is preferable that the support leg is deployed toward the vehicle body floor to support the seat cushion from below when a load of a predetermined value or more is applied to the seat cushion.
As described above, the support members (support legs) are arranged so that they can be stored on the seat cushion side in the normal state, so it is necessary to secure sufficient space between the seat cushion and the vehicle body floor. can be done.

At this time, the support member is attached so as to be rotatable with respect to the seat cushion, and the left and right legs extend to be long in the seat front-rear direction when stored on the seat cushion side. It has a body portion, and the left and right leg body portions are arranged at a predetermined interval in the seat width direction, and are preferably arranged on the left and right side portions of the seat cushion.
As described above, since the left and right leg body portions are arranged on the left and right side portions of the seat cushion, the load (seating load) applied to the seat cushion can be received in a well-balanced manner.

At this time, the support member is attached so as to be rotatable with respect to the seat cushion, and is positioned between a reference position stored on the seat cushion side and a deployed position deployed on the vehicle body floor side. Preferably, the support member is rotatable and engages a leg engaging member provided on the vehicle body floor when the support member is moved to the deployed position.
With the above configuration, when a load exceeding a predetermined level is applied to the vehicle seat, the support member deployed from the seat cushion side engages with the leg engaging member provided on the vehicle body floor, thereby stabilizing the seat cushion. can be retained.

At this time, when the support member is moved to the unfolded position, the portion of the support member attached to the seat cushion is arranged at a position forward of the seat relative to the portion engaged with the leg engaging member. and good.
With the above configuration, the support member can support the seat cushion by stretching it when a predetermined load or more is applied, so that the seat cushion can be held more stably.

At this time, a movement restricting member is attached to the seat cushion for restricting the rotational movement of the support member, and the movement restricting member moves to the reference position when a predetermined load or more is applied to the vehicle seat. It is preferable to restrict the movement of the support member that has been deployed from the position beyond the deployed position.
With the above configuration, when a predetermined load or more is applied, the movement of the support member is restricted after it has moved to the unfolded position, so that the seat cushion can be held more stably.

At this time, a leg rotation shaft that rotatably connects the support member to the seat cushion, and a leg rotation shaft or a peripheral portion of the leg rotation shaft that is attached to the support member to move the support member to the reference position. and an urging member that urges the vehicle seat to the side, wherein the support member moves from the reference position against the urging force of the urging member when a predetermined load or more is applied to the vehicle seat. It is better to rotate to the deployed position.
With the simple structure, the support member can be housed on the seat cushion side in a normal state, and the support member can be deployed on the vehicle body floor side when a predetermined load or more is applied.

At this time, the support members are attached to the left and right side portions of the seat cushion, and include left and right leg body portions that extend long in the seat front-rear direction when stored on the seat cushion side, and the left and right leg portions. and a leg connecting portion that connects the extending end portion of the leg body portion of the leg connecting portion that engages the leg engaging member when the support member is in the deployed position, and the leg connecting portion A weight member for increasing the weight of the support member is attached to the portion, and a weight member is attached to the left and right side portions of the seat cushion at a position lower than the left and right leg body portions. Left and right plate-like elastic members are attached so as to extend across the main body portion, and the support member moves beyond the plate-like elastic members from the reference position when a predetermined load or more is applied to the vehicle seat. to move downward with the weight member and move to the deployed position together with the weight member.
With the above structure, the support member can be stored on the seat cushion side with a simple structure, and when a load exceeding a predetermined level is applied, the support member can be deployed on the vehicle body floor side.

At this time, a cushion lock device is provided which rotatably connects the seat cushion to the seat back and locks the rotational movement of the seat cushion when the seat body is in the normal state. The device has a cushion operation lever that is operated to unlock the seat cushion, and the support members are attached to left and right side portions of the seat cushion and stored on the seat cushion side. The cushion control lever includes left and right leg members extending longitudinally in the seat front-rear direction when the seat is closed, and a leg connecting portion connecting the extending ends of the left and right leg members. It is preferably attached to the lower portion of the seat cushion and arranged at a position surrounded by the left and right leg body portions and the leg connecting portion.
With the above configuration, the support member (support leg) and the cushion control lever can be compactly arranged in the lower portion of the seat cushion.

At this time, a support base provided on the vehicle body floor for supporting the seat body and a base cover for covering the support base from above are provided, and the seat body is positioned below the seat cushion to cover the normal seat body. It is preferable that a rotating member is attached for sliding on the upper surface of the base cover when moving from the state to the stored state.
With the above configuration, the vehicle seat can smoothly switch the seat body from the normal state to the retracted state with a simple configuration.

According to the present invention, it is possible to realize a vehicle seat that can receive the seating load of a seated person when a load of a predetermined value or more is applied, and that can switch the seat body from the normal state with a simple configuration.
Further, according to the present invention, a vehicle seat can be realized in which a space is secured between the seat cushion and the vehicle body floor in a normal state, and the seating load can be favorably received when an excessive load is applied.
Further, according to the present invention, the load (seating load) applied to the seat cushion can be received in a well-balanced manner.
Further, according to the present invention, the seat cushion can be stably held when a predetermined load or more is applied to the vehicle seat.
Further, according to the present invention, with a simple structure, the support member can be stored on the seat cushion side in a normal state, and when a load exceeding a predetermined level is applied, the support member can be deployed to the vehicle body floor side. can be done.
Further, according to the present invention, the support member (leg member) and the cushion operating lever can be arranged compactly in the lower portion of the seat cushion.
Further, according to the present invention, the vehicle seat can smoothly switch the seat body from the normal state to the retracted state with a simple structure.

It is a perspective view of the vehicle of this embodiment. It is a perspective view of the vehicle seat of this embodiment. 1 is a perspective view of a seat frame that serves as a skeleton of a vehicle seat; FIG. It is a side view of a seat frame, Comprising: It is a figure which shows a reclining apparatus. FIG. 4 is a side view of the seat frame showing a cushion lock device; FIG. 4 is a bottom view of the seat frame showing the cushion frame, supporting legs, and leg rotating device; FIG. 4 is a side view of the vehicle seat, showing a state in which the support legs are in the reference position; FIG. 10 is a diagram showing a state in which the support legs are in the deployed position; 1 is a side view of a vehicle seat, showing a normal state; FIG. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state. It is a figure which shows an accommodation state. It is a figure which shows a tip-up state. It is a figure explaining the operation|movement which returns to a normal state from a tip-up state. It is a figure which shows a normal state. Hereafter, it is a vehicle seat of 2nd Embodiment, Comprising: It is a perspective view of a seat frame. 1 is a side view of a vehicle seat, showing a normal state; FIG. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 1). It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 2). It is a figure which shows an accommodation state. Hereafter, it is a vehicle seat of 3rd Embodiment, Comprising: It is a side view of the said seat. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state. It is a figure which shows an accommodation state. It is a side view of the vehicle seat of 4th Embodiment. Hereafter, it is a vehicle seat of 5th Embodiment, Comprising: It is a side view of the said seat. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state. It is a figure which shows an accommodation state. Hereafter, it is a vehicle seat of 7th Embodiment, Comprising: It is a side view of the said seat. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 1). It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 2). It is a figure which shows an accommodation state. Hereafter, it is a vehicle seat of 8th Embodiment, Comprising: It is a side view of the said seat. It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 1). It is a figure explaining the operation|movement which moves from a normal state to an accommodation state (part 2). It is a figure which shows an accommodation state. Hereafter, it is a vehicle seat of 9th Embodiment, Comprising: It is a side view of the said seat. FIG. 36 is a cross-sectional view taken along the line AA of FIG. 35; It is a figure explaining the operation|movement which moves from a normal state to an accommodation state. It is a figure which shows an accommodation state. FIG. 10 is a diagram showing a modified example 1 of the vehicle seat in which the supporting airbag is in the reference position. FIG. 11 shows the support airbag in the deployed position; FIG. 10 is a diagram illustrating a second modified example of the vehicle seat in which the supporting legs have moved from the reference position to the unfolded position;

A vehicle seat according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 41. FIG.
This embodiment is a vehicle seat that includes a seat body having a seat back and a seat cushion, and that can switch the seat body between a normal state and a retracted state in which the seat body is stored and moved from the normal state. A vehicle characterized by comprising a support member that is arranged to be stored in a vehicle seat and that expands to the vehicle body floor side and supports the seat cushion from below when a predetermined load or more is applied to the vehicle seat This invention relates to the invention of a sheet for use.
Note that the side of the seat back of the vehicle seat on which the passenger sits is the front side of the seat.

As shown in FIG. 1, the vehicle V of this embodiment is an automobile capable of automatic driving, and includes vehicle seats S to S8. The vehicle seats S to S8 will be described in order below.

The vehicle seat S has three types of seat arrangements: a normal state in which the occupant 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 upward. It is a possible sheet.
Specifically, when the seated person pulls the Lycra control lever 54 at the upper end of the seat body, the vehicle seat S is tilted forward and folded from the normal state shown in FIG. 11 in which it is housed. Then, the retracted state is switched to the tip-up state shown in FIG. 12 by the seated person manually raising the seat body upward. Further, when the seated person pulls the cushion operation lever 64 at the lower end of the seat body (seat cushion) from the tip-up state, a part of the seat body (seat cushion) rotates downward, and the normal position shown in FIG. return to state.

As shown in FIGS. 2 and 3, the vehicle seat S is mounted on a seat body including a seat back 1, a seat cushion 2, and a headrest 3, and on a floor of a vehicle body so that the seat body can move in the front-rear direction. a support base 30 mounted on the rail device 4 to support the seat body (seat back 1); and a base cover 40 covering the support base 30 from above. ing.
Further, as shown in FIG. 3, the vehicle seat S includes 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, and a seat back. and a cushion lock device 60 that rotatably connects the seat cushion 2 to the seat cushion 1 and locks the rotational movement of the seat cushion 2 .
3 and 7, the vehicle seat S includes a support leg 70 arranged to be stored in the seat cushion 2, and a support leg 70 rotatably connected to the seat cushion 2. In addition, a leg rotation device 80 that deploys the support leg 70 toward the vehicle body floor when a load exceeding a predetermined level is applied, and a leg rotation device 80 that is provided on the vehicle body floor and detachably engages the support leg 70 that is deployed toward the vehicle floor. and a mating leg engaging hook 90 .
A recessed storage floor is provided on the front side of the vehicle seat S at a position lower than the floor of the vehicle body.

As shown in FIG. 2, the seat back 1 is a backrest portion that supports the back of the occupant from behind. It is covered and constructed.
The seat cushion 2 is a seating portion that supports an occupant from below. A cushion pad 2a is placed on a cushion frame 20 shown in FIG. It is configured.
The headrest 3 is a head portion that supports the occupant's head from behind, and is configured by placing a cushion pad on a pillar (not shown) serving as a core material and covering it with an outer skin.

As shown in FIG. 3, the rail device 4 is disposed between the seat body and the vehicle body floor in the vertical direction. Left and right upper rails 4b slidably supported along, a locking device (not shown) that locks the upper rails 4b against the lower rails 4a so as not to slide, and a lock device that is operated to unlock the lock device. and a rail operating lever 4c shown in FIG.
A support base 30 is provided on the upper surfaces of the left and right upper rails 4b.

As shown in FIG. 3 , the back frame 10 is formed of a rectangular frame that serves as the skeleton of the seat back 1 . Left and right connection brackets 11 are attached for the purpose.
The connection bracket 11 is made of a bow-shaped sheet metal member extending in the vertical direction, and has an upper end attached to the back frame 10 and a lower end attached to the support base 30 .
A reclining device 50 (reclining main body 51) that rotatably connects the back frame 10 to the support base 30 is attached to the lower end of the right connecting bracket 11. is provided with a back rotation shaft 52 pivoted on the support base 30 in the seat width direction.

As shown in FIG. 3, the cushion frame 20 is composed of a rectangular frame-like body that serves as the skeleton of the seat cushion 2, and includes left and right side frames 21 arranged laterally in the seat width direction. A front connecting pipe 22 connecting the front portions, a rear connecting pipe 23 connecting the rear portions of the side frames 21, and a pan frame 24 as a plate-shaped frame connecting the front connecting pipes 22 and the rear connecting pipes 23. mainly composed of
The side frames 21 are made of sheet metal members extending in the seat front-rear direction, and support legs 70 are rotatably connected to the cushion frames 20 at the front end portions of the inner surfaces of the left and right side frames in the seat width direction. A leg rotation device 80 is attached.
A cushion lock device 60 is attached to the rear end portion of the seat width direction outer surface of the side frame 21 .

As shown in FIG. 3, the support base 30 is a member for supporting the seat body, and is provided on the side portions in the seat width direction, and includes left and right side base portions 31 arranged along the upper rail 4b, A front base connecting portion 32 connecting the front portions of the side base portions 31, a rear base connecting portion 33 connecting the rear portions of the side base portions 31, and left and right reinforcing base portions attached to the upper surfaces of the side base portions 31. 34 and .
Left and right ends of each of the front base connecting portion 32 and the rear base connecting portion 33 are sandwiched between the side base portion 31 and the reinforcing base portion 34 and connected.

The base cover 40, as shown in FIG. 2, is a molded resin product that covers the entire support base 30 and the rail device 4 from above.
The base cover 40 has the function of protecting the support base 30 and the rail device 4 from the outside, and also has the function of guiding the movement of the seat body (seat cushion 2) when the seat body is switched from the normal state to the retracted state. .
The base cover 40 is provided on the side portion in the seat width direction, and is provided between the left and right cover protrusions 41 formed to protrude upward toward the seat cushion 2 and the left and right cover protrusions 41 . , and a cover housing recess 42 formed so as to be recessed below the cover projecting portion 41 for housing an object.
The cover protruding portion 41 has the highest upper surface at the central portion in the seat front-rear direction, and a storage floor is arranged on the extension of the inclined surface in front of the seat.
When the seat body moves from the normal state to the stowed state, the cover protrusion 41 contacts the seat cushion 2 (specifically, the cushion cover that protects the seat cushion 2) as shown in FIG. It has a function of sliding (sliding) the cushion 2 toward the storage floor. That is, the seat cushion 2 is guided by the base cover 40 so as to move smoothly toward the storage floor.

As shown in FIGS. 3 and 4, the reclining device 50 is arranged on the inner surface of the right connecting bracket 11 in the seat width direction, and suppresses interference with the cushion frame 20 in the seat width direction.
The reclining device 50 includes a reclining body 51 that is driven when rotating the back frame 10, a back rotation shaft 52, and a spiral spring that biases the back frame 10 to rotate forward about the back rotation shaft 52. 2, which is operated to release the locked state of the back frame 10; ing.

The reclining main body 51 has a known locking mechanism, and changes the state of the back frame 10 between a locked state in which it is fixed to the support base 30 and an unlocked state in which it is rotatable with respect to the support base 30. It is possible to switch.
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 the spiral spring 53 has one end locked on the back frame 10 side and the other end on the support base 30 side. locked to.
The Lycra cable 55 is pulled by the operation of the Lycra operation lever 54 and acts to switch the seat back 1 from the locked state to the unlocked state.

In the above configuration, the reclining device 50 locks the back frame 10 in the upright posture shown in FIG. It can be rotated forward and folded toward the vehicle body floor.

As shown in FIGS. 3 and 5, the cushion lock device 60 is arranged on the outer surface of the left side frame 21 in the seat width direction.
The cushion lock device 60 includes a lock body 61 for locking the rotation of the cushion frame 20, a cushion rotation shaft 62, and a spiral spring that biases the cushion frame 20 downward about the cushion rotation shaft 62. 63, a cushion operating lever 64 shown in FIG. 2 operated to release the locked state of the cushion frame 20, a first cushion cable 65 connecting the Lycra operating lever 54 and the lock body 61, and a cushion , and a second cushion cable 66 that connects the lock body 61 with the operation lever 64 for the second cushion.

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, and the spiral spring 63 has one end locked on the back frame 10 side and the other end on the cushion frame 20 side. locked to.
The cushion operating lever 64 is attached to the lower end portion of the cushion frame 20 and arranged on the left side portion of the front portion of the cushion frame 20 .
The first cushion cable 65 extends vertically along the outer surface of the back frame 10 and is pulled by the operation of the Lycra control lever 54 to switch the cushion frame 20 from the locked state to the unlocked state. do.
The second cushion cable 66 extends in the seat front-rear direction along the side surface of the cushion frame 20, and is pulled by the operation of the cushion operation lever 64 to switch the cushion frame 20 from the locked state to the unlocked state. acts on

The cushion lock device 60 locks the cushion frame 20 in the horizontal posture of FIG. The cushion frame 20 can be folded toward the vehicle body floor while being biased downward.
In addition, the cushion lock device 60 releases the locked state of the cushion frame 20 by operating the cushion operation lever 64 in the normal state, and lifts the cushion frame 20 upward against the biasing force of the spiral spring 63 . Thus, it is possible to move to the tip-up state shown in FIG. When the cushion operating lever 64 is operated again in the tip-up state (see FIG. 13), the biasing force of the spiral spring 63 rotates the cushion frame 20 downward with respect to the back frame 10 as shown in FIG. It can be returned to normal state.

In the above configuration, as shown in FIG. 6, the cushion operating lever 64 is attached to the lower portion of the cushion frame 20, and is located at a position surrounded by the left and right leg body portions 71 of the support legs 70 and the leg connecting portions 72. are placed in
Therefore, the support leg 70 and the cushion operating lever 64 can be arranged compactly in the lower portion of the seat cushion 2 .

As shown in FIGS. 3 and 6, the support legs 70 are arranged so as to be stored on the side of the seat cushion 2, and are deployed to the vehicle floor side when a load exceeding a predetermined amount is applied to the vehicle seat S. It is a supporting member that supports the seat cushion 2 from below.
The support leg 70 is rotatably attached to the cushion frame 20 via a leg rotation device 80, and has a reference position shown in FIG. It is rotatable between the deployed position shown.
The support leg 70 is retracted so as to extend along the seat front-rear direction so as to be substantially parallel to the cushion frame 20 when in the reference position.
Further, the support leg 70 is configured to engage with a leg engagement hook 90 provided on the vehicle body floor when moved to the deployed position.

As shown in FIG. 6, the support legs 70 are made of a substantially U-shaped pipe member, and are attached to the left and right side frames 21 of the cushion frame 20, respectively. Left and right leg body portions 71 extending long in the direction, leg connecting portions 72 connecting the extending end portions of the left and right leg body portions 71, and attached to both end portions of the leg connecting portions 72 in the seat width direction. , and left and right weight members 73 for increasing the weight of the support leg 70 .
The left and right leg body portions 71 are arranged at a predetermined interval in the seat width direction, and their base ends are attached to the left and right inner surfaces of the side frames 21 via leg rotation shafts 81 .

The leg rotation device 80 is arranged on the inner surface of the left and right side frames 21, as shown in FIGS.
The leg rotation device 80 is pivotally supported by the side frame 21 and is attached to the leg rotation shaft 81 to rotatably connect the support leg 70, and is supported around the leg rotation shaft 81. A bias spring 82 that biases the leg 70 upward (toward the cushion frame 20), and a plate that is attached to the side frame 21 and positioned below the support leg 70 to bias the support leg 70 upward. It has an elastic spring 83 and a movement restricting member 84 that is attached to the side frame 21 and restricts the rotational movement of the support leg 70 .

The urging spring 82 has one end locked to the cushion frame 20 side and the other end locked to the support leg 70 side. It is biased toward the reference position.
The plate-like elastic spring 83 is a plate-like elastic member that supports the support leg 70 from below, and is elongated in the seat width direction so as to straddle the support leg 70 (leg body portion 71). extended.
The plate-like elastic spring 83 has one end fixed to the cushion frame 20 side and the other end holding the support leg 70 from below.

7 and 8, the movement restricting member 84 is an elastic member (stopper member) for restricting the movement of the support leg 70 beyond the extended position from the reference position. It is attached to the inner surface and positioned forward of the base end 70 a of the support leg 70 .
Specifically, the movement restricting member 84 is configured to abut on the support leg 70 and hold the support leg 70 when the support leg 70 moves to the deployed position.

In the above configuration, as shown in FIGS. 7 and 8, the support leg 70 is normally urged by the urging spring 82 shown in FIG. 3 and held by the plate-like elastic spring 83 shown in FIG. It is arranged at the reference position on the seat cushion 2 side.
For example, when a vehicle seat S is subjected to a load greater than a predetermined amount due to a frontal collision of a vehicle, the support legs 70 move from the reference position over the plate-like elastic springs 83 to a position below the plate-like elastic springs 83 . .
As a result, the support leg 70 moves against the biasing force of the biasing spring 82 to the deployed position on the vehicle body floor side. At this time, since the support leg 70 has the weight member 73, it can be quickly moved to the deployed position by the weight of the weight member 73 after the load is applied.
The support legs 70 that have moved to the unfolded position engage with leg engagement hooks 90 provided on the floor of the vehicle body, and can support the seat cushion 2 so as to be stretched from below.
In addition, since the support leg 70 is positioned by contacting the movement restricting member 84 when it is moved to the deployed position, it is held in the deployed position.

In the above configuration, as shown in FIG. 8 , when the support leg 70 moves to the deployed position, the base end of the support leg 70 on the side of the seat cushion 2 is the extension end engaged with the leg engaging hook 90 . It is located in front of the seat rather than the part.
In other words, the support leg 70 is downwardly inclined forward from the base end side toward the extension end side.
Therefore, since the support leg 70 can support the seat cushion 2 in a stretched manner, the seat cushion 2 can be held more stably when a load of a predetermined value or more is applied to the vehicle seat S.

As shown in FIGS. 7 and 8, the leg engaging hook 90 is a hook member that engages the deployed support leg 70, and is rotatably attached to the vehicle body floor via an inertia lock device 91. It is rotatable between a retracted position in the vehicle body floor and an engagement position in which it protrudes above the vehicle body floor and engages with the support leg 70 .
When in the retracted position, the leg engaging hook 90 is stored inside the vehicle body floor and is not exposed above the vehicle body floor.
Further, the leg engaging hook 90 can engage with the central portion of the leg connecting portion 72 of the supporting leg 70 in the longitudinal direction when it is in the engaging position.

As shown in FIGS. 7 and 8, the inertia lock device 91 is a device capable of locking the support legs 70 deployed on the vehicle body floor side while they are held by the leg engaging hooks 90 at the time of a frontal collision of the vehicle. , is attached to the vehicle body floor, and supports the leg engaging hook 90 so as to be rotatable.
Specifically, the inertia lock device 91 includes a hook rotating shaft 92 that serves as a rotating shaft for the leg engaging hook 90, a hook biasing spring 93 that biases the leg engaging hook 90 toward the retracted position, and a hook. and a locking member 94 for locking the leg engaging hook 90 at the engaging position when the leg engaging hook 90 rotates to the engaging position against the biasing force of the biasing spring 93. there is

The hook biasing spring 93 is attached so as to wind around the outer peripheral surface of the hook rotating shaft 92, one end of which is locked to the vehicle body floor side and the other end of which is locked to the leg engaging hook 90 side. .
The locking member 94 is attached to the hook pivot shaft 92 and is positioned adjacent to the leg engaging hook 90, does not engage the leg engaging hook 90 in the retracted position, and engages the leg engaging hook 90. When in position, it is configured to engage and lock with the leg engaging hook 90 .

In the above configuration, the inertia lock device 91 moves the leg engaging hook 90 to the engaged position shown in FIG. 8 when a front collision of the vehicle occurs while the leg engaging hook 90 is in the retracted position shown in FIG. lock function. As a result, the support legs 70 that have been deployed from the seat cushion 2 side can engage with the leg engagement hooks 90 .
Specifically, when the leg engaging hook 90 receives an impact load due to a frontal collision of the vehicle, the leg engaging hook 90 resists the urging force of the hook urging spring 93 and moves toward the engagement position with an inertial force. works. Then, the leg engaging hook 90 moves from the retracted position to the engaging position and is locked by the locking member 94 .
In addition, due to a frontal collision of the vehicle, the support leg 70 also receives an inertial force in front of the seat, and the inertial force acts in the direction from the normal position stored in the seat cushion 2 toward the deployed position.
As a result, the supporting leg 70 (leg connecting portion 72) and the leg engaging hook 90 come to engage with each other.

<Seat storage operation>
Next, the operation of moving the seat body from the normal state to the retracted state will be described with reference to FIGS. 9 to 14. FIG. 9 to 14, the reclining device 50 and the cushion locking device 60 are indicated by black circles in the locked state, and by white circles in the unlocked state.

When the vehicle seat S is in the normal state shown in FIG. 9, the seat back 1 is supported by the support base 30 and locked in the upright position by the reclining device 50. As shown in FIG. The seat cushion 2 connected to the seat back 1 is supported from below by a base cover 40 (support base 30).

When the vehicle seat S is moved from the normal state to the stowed state, the operator operates a Lycra control lever 54 provided on the upper surface of the seat back 1 .
When the seated person operates the Lycra operating lever 54, the Lycra cable 55 and the first cushion cable 65 are respectively pulled, and as shown in FIG. be done.
Then, the seat back 1 starts rotating toward the front side of the seat around the back rotating shaft 52 so as to move the seat cushion 2 to the storage floor by the biasing force of the spiral spring 53 .

As shown in FIG. 10, the seat cushion 2 contacts the surface of the base cover 40 (cover projection 41), and the seat back 1 moves toward the storage floor while sliding on the surface of the base cover 40. As shown in FIG.
Then, as shown in FIG. 11, when the seat back 1 and the seat cushion 2 reach the storage floor, the seat cushion 2 is locked again by the cushion lock device 60 by ending the operation of the Lycra control lever 54. will be
Through the series of operations described above, the seat body is stored on the storage floor, and the vehicle seat S is switched to the stored state.

<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. 11 and 12. FIG.
When the vehicle seat S is in the stowed state shown in FIG. 11, for example, the occupant manually raises the seat body to switch to the tip-up state shown in FIG.
At this time, since the cushion lock device 60 locks the pivoting motion of the seat cushion 2, the seat cushion 2 can be integrally raised by raising the seat back 1 upward.
In the tip-up state, by sliding the upper rails 4b to one side in the seat front-rear direction with respect to the lower rails 4a, it is possible to ensure a wide luggage compartment space on the other side in the seat front-rear direction.

When the vehicle seat S is switched to the tip-up state shown in FIG. 12, the seat back 1 returns to the same position as the normal state, and is locked by the reclining device 50 in the upright position.

Finally, when the vehicle seat S is moved from the tip-up state to the normal state, the second cushion cable 66 is pulled by pulling the cushion control lever 64 shown in FIG. Thus, the locked state of the cushion lock device 60 is released.
The seat cushion 2 is rotated downward with respect to the seat back 1 by the biasing force of the spiral spring 63 as the cushion lock device 60 is released.
Through the series of operations described above, the vehicle seat S returns to the normal state shown in FIG.

In addition to the switching operation described above, the vehicle seat S can also be moved from the normal state to the tip-up state.
Specifically, when the seated person operates the cushion operation lever 64 , the second cushion cable 66 is pulled and the locked state of the cushion lock device 60 is released.
By rotating the seat cushion 2 upward against 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 seatback 1 by the reclining device 50 is maintained.

<Second Embodiment of Vehicle Seat>
Next, a second embodiment of the vehicle seat will be described with reference to FIGS. 15-19.
In addition, the description of the content that overlaps with the vehicle seat S described above will be omitted.
The vehicle seat S2 of the second embodiment realizes a vehicle seat capable of smoothly switching the seat body from the normal state.

As shown in FIG. 15, the vehicle seat S2 rotatably connects the seat cushion 102 (cushion frame 120) to the seat back 101 (back frame 110) and locks the rotational movement of the seat cushion 102. It has a cushion lock device 160 that
The cushion lock device 160 has a spiral spring 163 that urges the seat cushion 102 upward about a cushion rotating shaft 162 instead of the spiral spring 63 shown in FIG.
With the above configuration, the cushion lock device 160 can lift the seat cushion 102 by the biasing force of the spiral spring 163 after releasing the locked state by operating the Lycra control lever 54 (moving it slightly upward). can be done).

The operation of moving the seat body from the normal state to the retracted state will be described below.
When the vehicle seat S2 is in the normal state shown in FIG. 16, the seat cushion 102 connected to the seat back 101 is supported from below by the base cover 40 (support base 30).
When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 160 are released as shown in FIG.
As the locked state is released, the seat cushion 102 is slightly lifted from the base cover 40 by the biasing force of the spiral spring 163 .

Then, as shown in FIG. 18, the seat back 101 starts to rotate toward the front side of the seat around the back rotation shaft 52 so as to move the seat cushion 102 to the storage floor.
At this time, the seat back 101 moves toward the storage floor while the seat cushion 102 maintains a raised state without coming into contact with the surface of the base cover 40 .

Then, as shown in FIG. 19, when the seat back 101 and the seat cushion 102 reach the storage floor, the seat cushion 102 is locked again by the cushion lock device 160 by ending the operation of the Lycra control lever 54. will be
Through the series of operations described above, the vehicle seat S2 is switched to the stowed state.
With the above configuration, it is possible to realize a vehicle seat that can smoothly switch the seat body from the normal state.

<Third Embodiment of Vehicle Seat>
Next, a third embodiment of the vehicle seat will be described with reference to FIGS. 20-22.
The vehicle seat S3 of the third embodiment realizes a vehicle seat capable of supporting a seat cushion with a simple structure in a seat whose seat body can be switched from a normal state.

As shown in FIG. 20, the vehicle seat S3 is provided so as to protrude outward from the outer surface of the seat back 201 in the seat width direction. It further includes a holding member (cushion holding member) 201a that holds from.
Specifically, the holding member 201a abuts on the cushion cover 202a that protects the side portion of the seat cushion 202, and can hold the cushion cover 202a from below.

The operation of moving the seat body from the normal state to the retracted state will be described below.
When the vehicle seat S3 is in the normal state shown in FIG. 20, the seat cushion 202 connected to the seat back 201 is supported from below by the holding member 201a provided on the seat back 201. As shown in FIG.
In other words, the seat cushion 202 is not in contact with the base cover 40 and is slightly lifted from the base cover 40 .

When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 60 are released as shown in FIG.
Then, the seat back 201 starts rotating toward the front side of the seat about the back rotating shaft 52 so as to move the seat cushion 202 to the storage floor.
At this time, the seat cushion 202 contacts the surface of the base cover 40 and the seat back 201 moves toward the storage floor while sliding on the surface of the base cover 40 .

Then, as shown in FIG. 22, when the seat back 201 and the seat cushion 202 reach the storage floor, the seat cushion 202 is locked again by the cushion lock device 60 by ending the operation of the Lycra control lever 54. will be
Through the series of operations described above, the vehicle seat S3 is switched to the stowed state.
With the above configuration, it is possible to realize a vehicle seat that can support the seat cushion from below with a simple configuration in the seat that can switch the seat body from the normal state.

<Fourth Embodiment of Vehicle Seat>
Next, a vehicle seat according to a fourth embodiment will be described with reference to FIG.
The vehicle seat S4 of the fourth embodiment realizes a vehicle seat capable of supporting a seat cushion with a simple structure in a seat whose seat body can be switched from a normal state.

The vehicle seat S4 includes a connecting member 305 that connects the seat back 301 and the seat cushion 302 together.
The connecting member 305 is a long and slender connecting string formed by bundling fibers to have a predetermined thickness. installed.
Note that the connecting member 305 may be a connecting belt, a connecting link, or the like, in addition to the connecting string.

In the above description, the operation of moving the seat body from the normal state to the retracted state is the same as that of the vehicle seat S4 of the third embodiment.
With the above configuration, it is possible to realize a vehicle seat that can support the seat cushion from below with a simple configuration in the seat that can switch the seat body from the normal state.

<Fifth Embodiment of Vehicle Seat>
Next, a vehicle seat according to a fifth embodiment will be described with reference to FIGS. 24 to 26. FIG.
The vehicle seat S5 of the fifth embodiment realizes a vehicle seat capable of smoothly switching the seat body from the normal state to the retracted state with a simple configuration.

As shown in FIG. 24, the vehicle seat S5 is provided so as to protrude downward from the lower end portion of the side portion of the seat cushion 402 (cushion frame 420) in the seat width direction. It further comprises a rotating roller 402a (rotating member) for movement.
More specifically, the rotating rollers 402a are attached to the left and right side portions of the seat cushion 402, and are arranged in plurality at predetermined intervals in the seat front-rear direction.

The operation of moving the seat body from the normal state to the retracted state will be described below.
When the vehicle seat S5 is in the normal state shown in FIG. 24, the seat cushion 402 connected to the seat back 401 is supported from below by the base cover 40 via the rotating rollers 402a.
When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 60 are released as shown in FIG.

Then, as shown in FIG. 25, the seat back 401 starts rotating toward the front side of the seat so as to move the seat cushion 402 to the storage floor.
At this time, the rotating roller 402 a provided on the seat cushion 402 can slide on the upper surface of the base cover 40 .
By the series of operations described above, the vehicle seat S5 is switched to the stowed state as shown in FIG.
With the above configuration, it is possible to realize a vehicle seat that can smoothly switch the seat body from the normal state to the retracted state with a simple configuration.

<Sixth Embodiment of Vehicle Seat>
Next, a vehicle seat according to a sixth embodiment will be described with reference to FIGS. 27-30.
The vehicle seat S6 of the sixth embodiment realizes a vehicle seat capable of supporting a seat cushion with a simple structure in a seat whose seat body can be switched from a normal state.

As shown in FIG. 27, the vehicle seat S6 includes a base cover 540 (support base 530) that supports the seat body from below.
The base cover 540 has a function of protecting the support base 530 from the outside and a function of supporting the seat body (seat cushion 502) from below when the seat body is in a normal state.
More specifically, the base cover 540 has left and right cover protrusions 541 which are provided at the front end portions of the left and right side portions and which protrude upward toward the seat cushion 2 while being inclined forward. 541 and a cover accommodating recess 542 for accommodating an object to be accommodated.
The left and right cover protrusions 541 support the seat front portion (front end portion) of the seat cushion 2 from below.

The operation of moving the seat body from the normal state to the retracted state will be described below.
When the vehicle seat S6 is in the normal state shown in FIG. 27, the seat cushion 502 connected to the seat back 501 is supported from below by the cover protrusion 541 provided on the base cover 540. As shown in FIG.
When the seated person operates the cushion operating lever 64, the locked state of the cushion lock device 60 is released. By raising the seat cushion 502 upward, the seat cushion 502 can be moved to the tip-up state shown in FIG.
It should be noted that the seat cushion 502 is locked again by the cushion lock device 60 by ending the operation of the cushion operation lever 64 .

When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 60 are released.
As the locked state is released, the seat back 501 starts to rotate toward the front side of the seat so as to move the seat cushion 502 to the storage floor, as shown in FIG.
At this time, the seat cushion 502 moves above the base cover 540 (the cover projecting portion 541).

By the series of operations described above, the vehicle seat S6 is switched to the stowed state as shown in FIG.
With the above configuration, it is possible to realize a vehicle seat that can support the seat cushion with a simple configuration in the seat that can switch the seat body from the normal state.

<Seventh Embodiment of Vehicle Seat>
Next, a vehicle seat according to a seventh embodiment will be described with reference to FIGS. 31 to 34. FIG.
The vehicle seat S7 of the seventh embodiment realizes a vehicle seat capable of supporting a seat cushion with a simple structure in a seat whose seat body can be switched from a normal state.

As shown in FIG. 31, the vehicle seat S7 is provided at the lower end portions of the left and right side portions of the seat cushion 602, and includes cushion engaging protrusions 602a that protrude downward toward the base cover 640, and the base cover. Cover engaging recesses 643 are provided so as to be recessed downward on the upper surfaces of the left and right side portions of 640 and engage with the cushion engaging protrusions 602a.

The operation of moving the seat body from the normal state to the retracted state will be described below.
When the vehicle seat S7 is in the normal state shown in FIG. 31, the seat cushion 602 connected to the seat back 601 is supported by the base cover 640 from below.
At this time, the cushion engaging projection 602a and the cover engaging recess 643 are engaged.

When the seated person operates the cushion operating lever 64, the locked state of the cushion lock device 60 is released. By raising the seat cushion 602 upward, the seat cushion 602 can be moved to the tip-up state shown in FIG.
It should be noted that the seat cushion 602 is locked again by ending the operation of the cushion operating lever 64 .

When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 60 are released.
As the locked state is released, the seat back 601 starts to rotate toward the front side of the seat so as to move the seat cushion 602 to the storage floor, as shown in FIG.
Through the above series of operations, the vehicle seat S7 is switched to the stowed state as shown in FIG.
With the above configuration, it is possible to realize a vehicle seat that can support the seat cushion with a simple configuration in the seat that can switch the seat body from the normal state.

<Eighth Embodiment of Vehicle Seat>
Next, an eighth embodiment of a vehicle seat will be described with reference to FIGS. 35-38.
The vehicle seat S8 of the eighth embodiment realizes a vehicle seat that can smoothly switch the seat body from the normal state to the retracted state with a simple configuration.

As shown in FIG. 35, the vehicle seat S8 is provided at the lower end portions of the left and right side portions of the seat cushion 702 (cushion frame 720), and has cushion engaging protrusions projecting downward toward the base cover 740. 702a, and cover engaging grooves 743 formed so as to be recessed inwardly on the outer surfaces of the left and right side portions of the base cover 740 and engaged with the cushion engaging projections 702a.

As shown in FIG. 36, the cushion engaging projection 702a has its base end attached to the cushion frame 720, and has a first extending portion 702aa extending outward in the seat width direction from the base end and a first extending portion 702aa. A second extending portion 702ab extending downward from the extending end of the projecting portion 702aa and extending inward in the seat width direction from the extending end of the second extending portion 702ab to engage with the cover engaging groove 743 The third extending portion 702ac is mainly configured.
The cover engaging groove 743 extends in the seat front-rear direction, and includes a first engaging groove 743a for slidingly moving the cushion engaging protrusion 702a when the seat body moves from the normal state to the retracted state, and the seat up-down direction. and a second engagement groove 743b extending in the direction of the cushion engagement groove 743b for sliding the cushion engagement projection 702a when the seat body moves from the normal state to the tip-up state.
An elastic member 744 having elasticity is embedded and attached to the groove portion of the base cover 740 where the cover engagement groove 743 is formed.
Therefore, the state of engagement between the seat cushion 702 and the base cover 740 is improved.

The operation of moving the seat body from the normal state to the retracted state will be described below.
A seat cushion 702 connected to a seat back 701 is supported by a base cover 740 when the vehicle seat S7 is in the normal state shown in FIG.
At this time, the cushion engaging projection 702a and the cover engaging groove 743 are engaged.

When the seated person operates the reclining operation lever 54, the locked states of the reclining device 50 and the cushion locking device 60 are released.
With the release of the locked state, the seat back 701 starts to rotate toward the front side of the seat so as to move the seat cushion 702 to the storage floor, as shown in FIG.
At this time, the cushion engaging projection 702 a can slide in the cover engaging groove 743 .
By the above series of operations, the vehicle seat S8 is switched to the stowed state as shown in FIG.
With the above configuration, it is possible to realize a vehicle seat that can smoothly switch the seat body from the normal state to the retracted state with a simple configuration.

<Other embodiments>
Although the storage floor is formed in front of the vehicle seat S in the above embodiment, the storage floor may be formed in the rear or side of the vehicle seat S without being limited thereto.
When a storage floor is formed behind the vehicle seat S, it is desirable that the vertical positional relationship between the seat back 1 and the seat cushion 2 is reversed when the seat body is stored on the storage floor.

In the above embodiment, the stored state of the seat body has been described as corresponding to the moving state of the present invention, but without any particular limitation, the tip-up state or the like of this embodiment corresponds to the moving state. is of course good.
In addition, the sliding state in which the seat body is moved from the normal position shown in FIG. 9 to a predetermined seat front position (predetermined seat rear position) by the rail device 4 may correspond to the moving state of the present invention.

In the above embodiment, the support base 30 is fixed to the vehicle body floor via the rail device 4 as shown in FIG. It may be changed as appropriate.
Alternatively, instead of the support base 30, a support bracket (support member) (not shown) fixed on the vehicle body floor may be employed.

In the above embodiment, as shown in FIG. 7, the support leg 70 is attached so as to be stored in the seat cushion 2, but is not particularly limited, and may be attached closer to the seat cushion 2 side. good.
If the support leg 70 is stored in the seat cushion 2, it becomes easier to secure a space between the seat cushion 2 and the floor of the vehicle body, resulting in a more preferable configuration.

In the above-described embodiment, as shown in FIG. 7, the support legs 70 (support members) are arranged so as to be stored in the seat cushion 2, and when a predetermined load or more is applied to the vehicle seat S, the vehicle body Although the seat cushion 2 is deployed on the floor side and supports the seat cushion 2 from below, it can be changed without particular limitation.
For example, as shown in FIG. 39, a vehicle seat S having a support airbag 870 instead of the support leg 70 may be used.
The support airbag 870 preferably has an inflatable airbag body (not shown) and an inflator (not shown) that supplies gas to the inside of the airbag body.
With the above configuration, as shown in FIGS. 39 and 40, the support airbag 870 is arranged so as to be housed in the seat cushion 2, and when a predetermined load or more is applied, the support airbag 870 expands toward the vehicle body floor. When unfolded, the seat cushion 2 can be supported from below.
In addition, since the vehicle seat S does not have the supporting legs 70, the space can be effectively utilized.

In the above-described embodiment, as shown in FIG. 7, the support leg 70 is arranged so as to be stored in the seat cushion 2, but it can be changed without particular limitation.
For example, as shown in FIG. 41, a U-shaped support leg 970 may be arranged so as to be stored in the vehicle body floor.
With the above configuration, the support leg 970 can be deployed toward the seat cushion 2 to support the seat cushion 2 from below when a load greater than or equal to a predetermined value is applied.
At this time, it is preferable that the support leg 970 engages a leg engaging member 990 attached to the lower end portion of the seat cushion 2 .
With the above configuration, it is not necessary to provide the support leg 70 on the seat body (seat cushion 2), so the seat body can be made lighter, and the seat body can be easily moved from the normal state to the tip-up state or the stored state. Become.
In addition, while the vehicle seat S is configured to utilize the inertial force of a frontal collision, by applying the above configuration to a known lateral flip-up seat, it is also possible to use the inertial force of a side collision. It is possible.

In the above embodiment, a storable vehicle seat used in an automobile was described as a specific example, but the seat is not particularly limited, and can be used as a vehicle seat for trains, buses, etc., as well as for vehicles such as airplanes, ships, etc. can also be used.

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 its spirit, and the present invention includes equivalents thereof.

V Vehicle S, S1, S2, S3, S4, S5, S6, S7, S8 Vehicle seat 1 Seat back 1a, 2a Cushion pad 1b, 2b Cover 1c Cover overhang 2 Seat cushion 3 Headrest 4 Rail device 4a Lower rail 4b Upper rail 4c rail operation lever 10 back frame 11 connection bracket 20 cushion frame 21 side frame 22 front connection pipe 23 rear connection pipe 24 pan frame 30 support base (support member)
31 Side base portion 32 Front base connecting portion 33 Rear base connecting portion 34 Reinforcing base portion 40 Base cover 41 Cover protrusion 42 Cover housing recess 50 Reclining device 51 Reclining body 52 Back rotation shaft 53 Spiral spring 54 Lycra operating lever 56 Lycra cable 60 cushion lock device 61 lock body 62 cushion rotation shaft 63 spiral spring 64 cushion operation lever 65 first cushion cable 66 second cushion cable 70 support leg (support member)
71 leg body portion 72 leg connecting portion 73 weight member 80 leg rotating device 81 leg rotating shaft 82 biasing spring (biasing member)
83 plate-like elastic spring (plate-like elastic member)
84 movement restricting member 90 leg engaging hook (leg engaging member)
91 inertia lock device 92 hook rotating shaft 93 hook biasing spring 94 locking member 101, 201, 301, 401, 501, 601, 701 seat back 102, 202, 302, 402, 502, 602, 702 seat cushion 110 back frame 120 Cushion frame 160 Cushion locking device 162 Cushion rotating shaft 163 Spiral spring 201a Holding member 202a Cushion cover 305 Connecting member 402a Rotating roller 530 Supporting base 540 Base cover 541 Cover protrusion 542 Cover housing recess 602a Cushion engagement protrusion 640 Base cover 643 Cover engaging concave portion 702a Cushion engaging convex portion 702aa First extending portion 702ab Second extending portion 702ac Third extending portion 720 Cushion frame 721 Side frame 740 Base cover 743 Cover engaging groove 743a First engaging groove 743b Second engagement groove 744 Elastic member 870 Support airbag 970 Support leg 990 Leg engagement member

Claims (10)

A seat body having a seat back and a seat cushion rotatably connected to the seat back,
A vehicle seat capable of switching between a normal state in which the seat body can seat a occupant and a moving state in which the seat body is moved from the normal state,
The seat cushion is arranged on one side of the seat cushion and the vehicle body floor, and when a predetermined load or more is applied to the vehicle seat, the seat cushion is deployed on the other side of the seat cushion and the vehicle body floor to move the seat cushion downward. A vehicle seat comprising a support member that supports from. The moving state is a stored state in which the seat body is stored and moved toward the vehicle body floor,
The support member is arranged to be stored on the side of the seat cushion, and expands to the side of the floor of the vehicle body to support the seat cushion from below when a predetermined load or more is applied to the vehicle seat. A vehicle seat according to claim 1, characterized in that it is a support leg. The support member is attached so as to be rotatable with respect to the seat cushion, and includes left and right leg body portions that extend longitudinally in the seat back-and-forth direction when stored on the seat cushion side. have
3. The vehicle according to claim 2, wherein the left and right leg body portions are arranged at predetermined intervals in the seat width direction, and are arranged on the left and right side portions of the seat cushion. sheet. The support member is attached so as to be rotatable with respect to the seat cushion, and is rotatable between a reference position stored on the seat cushion side and a deployed position deployed on the vehicle body floor side. and
4. The vehicle seat according to claim 2, wherein the support member engages a leg engaging member provided on the vehicle body floor when the support member moves to the deployed position. A portion of the support member attached to the seat cushion is positioned further forward in the seat than a portion engaged with the leg engaging member when the support member moves to the deployed position. 5. The vehicle seat according to claim 4. A movement restricting member that restricts rotational movement of the support member is attached to the seat cushion,
The movement restricting member restricts movement of the support member deployed from the reference position beyond the deployed position when a load greater than or equal to a predetermined load is applied to the vehicle seat. A vehicle seat according to claim 4 or 5. a leg rotation shaft that rotatably connects the support member to the seat cushion;
a biasing member attached to the leg rotation shaft or a peripheral portion of the leg rotation shaft and biasing the support member toward the reference position;
4. The supporting member rotates from the reference position to the deployed position against the biasing force of the biasing member when a load of a predetermined value or more is applied to the vehicle seat. A vehicle seat according to any one of 4 to 6. The support members are attached to left and right side portions of the seat cushion, and include left and right leg body portions extending longitudinally in the seat front-rear direction when stored on the seat cushion side, and the left and right leg body portions. and a leg connecting portion that connects the extending end portion of the portion,
the leg connecting portion engages the leg engaging member when the support member is in the deployed position;
A weight member for increasing the weight of the support member is attached to the leg connecting portion,
Left and right plate-like elastic members are attached to the left and right side portions of the seat cushion, and are arranged at positions lower than the left and right script body portions and extend so as to straddle the left and right script body portions,
The support member is characterized in that when a predetermined load or more is applied to the vehicle seat, the support member moves downward beyond the plate-like elastic member from the reference position and moves together with the weight member to the deployed position. The vehicle seat according to any one of claims 4 to 7. a cushion locking device that rotatably connects the seat cushion to the seat back and locks the rotational movement of the seat cushion when the seat body is in the normal state;
The cushion lock device has a cushion operation lever that is operated to release the locked state of the seat cushion,
The support members are attached to left and right side portions of the seat cushion, and include left and right script body portions that extend long in the seat front-rear direction when stored on the seat cushion side, and the left and right script body portions. and a leg connecting portion that connects the extending end portion of the portion,
9. The cushion operating lever is attached to a lower portion of the seat cushion, and arranged at a position surrounded by the left and right legs and the leg connecting portion. The vehicle seat according to any one of Claims 1 to 3. a support base provided on the vehicle body floor for supporting the seat body;
a base cover that covers the support base from above,
3. A rotary member is attached to the lower portion of the seat cushion for sliding on the upper surface of the base cover when the seat body moves from the normal state to the stored state. 10. Vehicle seat according to any one of 2 to 9.

Images