WO2014104363A1

WO2014104363A1 - Vehicle seat

Info

Publication number: WO2014104363A1
Application number: PCT/JP2013/085255
Authority: WO
Inventors: 阿部　浩久; 武志阿久津; 陽木井川
Original assignee: テイ・エステック株式会社; 本田技研工業株式会社
Priority date: 2012-12-28
Filing date: 2013-12-27
Publication date: 2014-07-03
Also published as: CN104884299A; JP6033206B2; JP2014141241A; CN104884299B

Abstract

Provided is a vehicle seat with which it is easy to perform a switching operation between a sittable state and a stored state with a simple structure. This vehicle seat (S) can be stored on the vehicle body floor side by moving a seat cushion (2) in the front-to-rear direction of the seat, and includes detachable legs (30) and rotary links (40) between the seat cushion (2) and the vehicle body floor. The upper end of the detachable leg (30) is attached to the seat cushion (2), and an engagement hook (32) provided to the lower end of the detachable leg is detachably connected to a striker (37) on the vehicle body floor. The upper end of the rotary link (40) is attached to the seat cushion (2), and the lower end thereof is rotatably connected on the vehicle body floor, and the rotary link (40) rotates so as to move the seat cushion (2) toward the stored position side. The engagement hook (32) of the detachable leg (30) protrudes in the left/right direction with respect to the striker (37) and engages therewith. An engagement hook (61) of the rotary link (40) protrudes in the up/down direction with respect to a striker (62) on the vehicle body floor and engages with the striker (62).

Description

Vehicle seat

The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of storing a seat cushion and a seat back in a storage position formed on a vehicle body floor.

Conventionally, a vehicle seat that can store a seat cushion and a seat back constituting a seat body in a storage position formed on a vehicle body floor is already known, and among these, a seat corresponding to a rear seat of the vehicle is known. Thus, there is a vehicle seat that can be stowed rearward and stored in a recess provided at the rear of the seat.
As a mechanism for storing the seat body, there is known a rotation link that connects the seat cushion and the vehicle body floor and rotates with respect to the vehicle body floor. The seat cushion and the seat back can be moved to the storage position by the rotation of the rotation link (see, for example, Patent Document 1).

The automobile seat described in Patent Document 1 includes a leg member connected to a front portion of a seat cushion, and a link member connected to a rear portion of the seat cushion so as to be rotatable with respect to a vehicle body floor. When the seat is retracted, the seat back is folded to the seat cushion side, and the hook member provided at the lower end of the leg member is released from the U-shaped striker fixed to the vehicle body floor. The seat body can be stored in the storage recess by rotating the link member toward the rear of the seat with respect to the vehicle body floor.
Further, when the seat is in the stored state, a hook member separately provided on the leg member is configured to engage with a striker separately fixed at the storage position.

Japanese Patent No. 3979460

By the way, as disclosed in Patent Document 1, in a seat that can store the seat body in the storage position, the seat body is moved in the front-rear direction to switch between a seatable state where the occupant can sit and a stored state. The hook member provided on the leg member is hooked in the front-rear direction with respect to the striker to be engaged or disengaged.
However, in the above configuration, when the leg member is re-engaged with the striker in order to return the seat from the stored state to the seatable state, the leg member may swing back and forth, thereby causing variation in the front and back.
Therefore, there has been a demand for a vehicle seat that improves the operability of absorbing the variation and engaging the leg member with the striker.

Further, in the seat of Patent Document 1, when the seat body is stored, an engagement hook separately provided on the leg member is configured to engage with a striker on the storage floor, and stability when storing the seat. However, there has been a demand for a vehicle seat that has a simple structure and further improves stability during seat storage.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat that has a simple structure and can be easily switched between a seatable state and a stored state. .
Another object of the present invention is to provide a vehicle seat having a simple structure and improved stability during seat storage.

According to the vehicle seat of the present invention, the subject is a vehicle that can be switched between a seatable state in which an occupant can be seated and a storage state in which a seat cushion is moved to a storage position formed on a vehicle body floor. A detachable leg, one end of which is attached to the seat cushion, and a first engaged portion provided at the other end is detachably connected to a first floor engaging portion provided on the vehicle body floor; A rotation link that has one end attached to the seat cushion, the other end rotatably connected to the vehicle body floor, and is rotatable to move the seat cushion to the storage position side, and the rotation link And a second engaged portion that is detachably connected to a second floor engaging portion provided on the vehicle body floor, wherein the first engaged portion of the detachable leg is the first engaged portion. For floor engagement And a portion of the first floor engaging portion that can be engaged with the first engaged portion extends along the moving direction of the seat cushion. To be solved.

As described above, the first engaged portion of the detachable leg protrudes in a direction orthogonal to the moving direction of the seat cushion with respect to the first floor engaging portion, and the first engaged portion of the first floor engaging portion. Since the portion engageable with the joint portion extends along the movement direction of the seat cushion, for example, the first engaged portion of the detachable leg is engaged with the first floor in order to return the seated state to the seatable state. Even when the detachable leg swings in the front-rear direction when engaged with the mating part, the hooking part of the first floor engaging part extends in the movement direction of the seat cushion. It is possible to engage by absorbing the variation associated with.
That is, the operability of engaging the detachable leg with the first floor engaging portion can be improved with a simple structure, and a vehicle seat that can be easily switched between the seatable state and the stored state can be provided.
In addition, since the second engaged portion attached to the rotating link and detachably connected to the second floor engaging portion provided on the vehicle body floor is provided, stability when using the seat or storing the seat is improved. it can.

At this time, the second engaged portion of the rotating link protrudes in a direction perpendicular to the protruding direction of the first engaged portion with respect to the second floor engaging portion, and the second floor engaging portion. The portion of the joint portion that can be engaged with the second engaged portion is a direction orthogonal to the extending direction of the portion of the first floor engaging portion that can be engaged with the first engaged portion. It is good to extend along.
With the above configuration, for example, the first engaged portion of the detachable leg described above is engaged with the first floor engaging portion and the second engaged portion of the rotation link in order to return the seated state to the seatable state. When the mating portion is engaged with the second floor engaging portion, it is possible to engage by absorbing variations due to the shake in the front-rear direction and the left-right direction of the entire seat including the detachable legs and the rotation link.

At this time, the second engaged portion is connected to the second floor engaging portion in the seatable state, and is disposed on the inner side of the seat cushion in the front-rear direction of the seat than the rotation link. And good.
With the above configuration, the vehicle seat can be made compact in the longitudinal direction of the seat.

At this time, one end is attached to the seat cushion, the other end is connected to the vehicle body floor, and includes a biasing member that biases the seat cushion upward, and the biasing member is an extension of the biasing member. An urging force is applied toward the outer side in the direction, and the second engaged portion is preferably disposed at a position overlapping the urging member in the front-rear direction of the seat.
With the above configuration, the vehicle seat can be made compact in the longitudinal direction of the seat.

At this time, the seat cushion is attached to one end of the seat cushion in the longitudinal direction of the seat where the storage position is formed, and can be attached to and detached from a third floor engagement portion provided on the vehicle body floor in the storage state. And the second engaged portion is disposed between the first engaged portion and the third engaged portion in the seat front-rear direction. good.
As described above, since the third engaged portion that is attached to the seat cushion and is detachably connected to the third floor engaging portion provided on the vehicle body floor in the retracted state is provided, the seat can be stably stored. Can be improved.
Moreover, the stability at the time of seat accommodation can be further improved by engaging the end portion on the storage position side of the seat cushion with the third floor engaging portion.
In addition, since the second engaged portion is disposed between the first engaged portion and the third engaged portion in the seat front-rear direction, the first and second engaged portions are in the seatable state. A simple structure in which the joint portion engages with the first and second floor engaging portions, and the third engaged portion on the storage position side engages with the third floor engaging portion when in the storage state. It becomes.

At this time, the first floor engaging portion includes a striker engaged with the first engaged portion, and a fixing member that fixes the striker to a vehicle body floor, and the striker has an upper surface of the fixing member. A front leg portion and a rear leg portion, which are erected from the front and rear sides of the seat, and the front leg portion and the rear leg portion which are coupled to each other and engageable with the first engaged portion. A portion of the fixing member to which the front leg portion and the rear leg portion are connected is formed so as to protrude upward from the fixing member, and both ends of the fixing member in the front-rear direction of the seat Of these, one end located on the outer side in the front-rear direction of the seat cushion may extend so as to become narrower toward the outer side in the front-rear direction.
As described above, the portion where the front leg portion and the rear leg portion are connected to each other in the fixing member is formed so as to protrude upward from the fixing member. Will be fixed to the raised part.
Further, of the both ends of the fixing member in the front-rear direction of the seat, one end located outside the front-rear direction of the seat cushion extends so as to become narrower toward the outer side in the front-rear direction. This makes it easier to secure a space for loading the luggage.

At this time, the first floor engaging portion includes a striker engaged with the first engaged portion, and a fixing member that fixes the striker to a vehicle body floor, and the striker has an upper surface of the fixing member. A front leg portion and a rear leg portion, which are erected from the front and rear sides of the seat, and the front leg portion and the rear leg portion which are coupled to each other and engageable with the first engaged portion. The fixing member includes a first fixing portion and a second fixing portion that are arranged at different positions in the seat width direction, and a first portion that is arranged behind the first fixing portion and the second fixing portion. It is preferable that the rear leg portion of the striker is disposed in a region surrounded by the first fixing portion, the second fixing portion, and the third fixing portion.
With the above configuration, since the striker is stably fixed to the vehicle body floor side, the engagement between the first engaged portion and the striker is stable, and as a result, the vehicle seat is stable when the vehicle seat is in a seatable state.

According to the present invention, the first engaged portion of the detachable leg protrudes in a direction orthogonal to the moving direction of the seat cushion with respect to the first floor engaging portion, and the first engaged portion of the first floor engaging portion. Since the portion engageable with the engaging portion extends along the moving direction of the seat cushion, for example, the first engaged portion of the detachable leg is moved to the first floor in order to return the seated state to the seatable state. Even when the detachable leg swings in the front-rear direction when engaged with the engaging part, the hooking portion of the first floor engaging part extends in the movement direction of the seat cushion. It is possible to engage by absorbing variations due to vibration.
That is, the operability of engaging the detachable leg with the first floor engaging portion can be improved with a simple structure, and a vehicle seat that can be easily switched between the seatable state and the stored state can be provided.
In addition, since the second engaged portion attached to the rotating link and detachably connected to the second floor engaging portion provided on the vehicle body floor is provided, stability when using the seat or storing the seat is improved. it can.

According to the present invention, for example, in order to return from the stored state to the seatable state, the first engaged portion of the above-described detachable leg is engaged with the first floor engaging portion, and the second of the rotating link. When the engaged portion is engaged with the second floor engaging portion, it is possible to engage by absorbing variations associated with the shake in the front-rear direction and the left-right direction of the entire seat including the detachable legs and the rotation link.
According to the present invention, the vehicle seat can be made compact in the longitudinal direction of the seat.
According to the present invention, since the third engaged portion that is attached to the seat cushion and is detachably connected to the third floor engaging portion provided on the vehicle body floor in the stored state is provided. Stability can be improved.
Moreover, the stability at the time of seat accommodation can be further improved by engaging the end portion on the storage position side of the seat cushion with the third floor engaging portion.
In addition, since the second engaged portion is disposed between the first engaged portion and the third engaged portion in the seat front-rear direction, the first and second engaged portions are in the seatable state. A simple structure in which the joint portion engages with the first and second floor engaging portions, and the third engaged portion on the storage position side engages with the third floor engaging portion when in the storage state. It becomes.

According to the present invention, the portion where the front leg portion and the rear leg portion of the fixing member are connected to each other is formed so as to protrude upward from the fixing member. It will be fixed to the part with increased rigidity.
Further, of the both ends of the fixing member in the front-rear direction of the seat, one end located outside the front-rear direction of the seat cushion extends so as to become narrower toward the outer side in the front-rear direction. This makes it easier to secure a space for loading the luggage.
According to the present invention, since the striker is stably fixed to the vehicle body floor side, the engagement between the first engaged portion and the striker is stable, and as a result, the vehicle seat is stable when the seat is in a seatable state. .

1 is a schematic perspective view of a vehicle seat according to the present invention. It is a schematic side view of a seat frame that is a skeleton of a vehicle seat. It is a schematic perspective view of a seat frame. It is explanatory drawing which shows the state which the leg locking device locked. It is explanatory drawing which shows the state which the leg locking device unlock | released and became impossible to lock. It is explanatory drawing which shows the state in which the leg locking device became lockable. It is explanatory drawing which shows the state which the leg locking device relocked. It is a schematic plan view of a striker. (A) is explanatory drawing which shows the engagement possible position which a cushion lock apparatus can lock, (b) is explanatory drawing which shows the engagement impossible position which a cushion lock apparatus cannot lock. It is a schematic side view of a vehicle seat, and is a diagram for explaining an operation of moving from a seatable state to a stored state (part 1). It is a figure explaining the operation | movement which moves to a storage state from a seating possible state (the 2). It is a figure explaining the operation | movement which returns to a seating possible state from the accommodation state (the 1). It is a figure explaining the operation | movement which returns to a seating possible state from the accommodation state (the 2).

The present embodiment is a vehicle seat that can be stored on the vehicle body floor side by moving the seat cushion in the front-rear direction, and includes an attachment / detachment leg and a pivot link between the seat cushion and the vehicle body floor, and a lower end of the attachment / detachment leg The engagement hook attached to the vehicle protrudes and engages with the striker on the vehicle floor in the left-right direction, and the engagement hook attached to the rotation link extends in the vertical direction with respect to the striker on the vehicle floor. The present invention relates to an invention of a vehicle seat characterized by protruding and engaging, and an engagement hook provided at a rear end portion of a seat cushion engages with a striker on a storage floor when the seat is stored.
The side on which the occupant sits with respect to the seat back of the vehicle seat is the front side of the seat.

The vehicle seat S of the present embodiment is a rear seat corresponding to a rear seat of the vehicle, for example. In addition, in a vehicle provided with three rows of seats in the vehicle longitudinal direction, it can be used as a second row of middle seats.
As shown in FIG. 1, the vehicle seat S has a seat body including a seat back 1, a seat cushion 2, and a headrest 3, and an upper end attached to a front end portion of the seat cushion 2 as shown in FIG. 2. A detachable leg 30 whose lower end is detachably connected to the vehicle body floor side, and a pivot link 40 and a piston whose upper end is attached to the rear end portion of the seat cushion 2 and whose lower end is rotatably connected to the vehicle body floor side. The damper 47 and the transmission member 46 that connects the rotation link 40 and the detachable leg 30 are mainly configured.
The piston damper 47 corresponds to the urging member in the claims.
On the rear side of the vehicle seat S, as shown in FIG. 2, a storage position is provided as a concave storage space formed on the vehicle body floor.

The vehicle seat S includes a reclining device 12 that rotatably connects the seat back 1 to the seat cushion 2, and a striker 37 that is fixed to the vehicle body floor with an engagement hook 32 provided on the detachable leg 30. A leg lock device 31 that locks to the seat cushion 2, a cushion lock device 50 that locks the engagement hook 51 attached to the rear end of the seat cushion 2 to the striker 54 fixed at the storage position, and the pivot link 40. A link lock device 60 for locking the engagement hook 61 to a striker 62 fixed to the vehicle body floor is attached.
The leg lock device 31, the cushion lock device 50, and the link lock device 60 are arranged at positions overlapping in the left-right direction, and are separated in the front-rear direction.
In addition, the engagement hook 32 and the striker 37 of the leg locking device 31 correspond to a first engaged portion and a first floor engaging portion in the claims, respectively. Further, the engagement hook 61 and the striker 62 of the link lock device 60 correspond to the second engaged portion and the second floor engaging portion of the claims, respectively. Further, the engagement hook 51 and the striker 54 of the cushion lock device 50 correspond to a third engaged portion and a third floor engaging portion in the claims, respectively.

The vehicle seat S is a seat capable of two types of seat arrangements, a seatable state in which an occupant can be seated and a stored state in which the seat body is stored in the storage position.
Specifically, when the vehicle seat S is in a seatable state, when the occupant pulls an operation strap (not shown), the seat back 1 is folded forward and folded toward the seat cushion 2 side. Thereafter, the folded sheet main body jumps up and rotates rearward of the sheet and moves in a sinking direction. Then, the seat body is stored in the storage position.

As shown in FIG. 1, the seat back 1 is a backrest part that supports the back of the occupant from the back, and the cushion pad 1a is placed on the back frame 10 shown in FIG. It is configured to be covered.
The seat cushion 2 is a seating portion that supports an occupant from below, and the cushion pad 2a is placed on the cushion frame 20 shown in FIG. 2 serving as a skeleton, and is covered with the skin 2b from above the cushion pad 2a. It is configured.
The headrest 3 is a head that supports the occupant's head from the rear, and is configured such that a cushion pad 3a is placed on a pillar (not shown) serving as a core and covered with an outer skin 3b.

The back frame 10 is formed of a substantially rectangular frame serving as a skeleton of the seat back 1, and as shown in FIG. 2, left and right ends for connecting to the cushion frame 20 are provided at lower ends of the left and right outer surfaces of the back frame 10. The connecting bracket 11 is attached.
The connection bracket 11 is made of a sheet metal member extending in the vertical direction, and is formed in a substantially bow shape when viewed from the side of the seat. The upper end of the connection bracket 11 is connected to the back frame 10 and the lower end is a cushion. The frame 20 is connected.
A reclining device 12 that rotatably connects the back frame 10 to the cushion frame 20 is attached to the left and right outer surfaces of the upper end of the connection bracket 11.

The reclining device 12 is a known device. As shown in FIG. 2, the reclining device 12 is a pivot shaft 13 that is the pivot center of the reclining device 12, and a spiral spring (not shown) that biases the back frame 10 toward the cushion frame 20 side. And mainly consists of. One end of the spiral spring is locked to the back frame 10 side, and the other end is locked to the cushion frame 20 side, more specifically, the connecting bracket 11.
The reclining device 12 can lock the rotation of the back frame 10, locks the back frame 10 in an upright state, unlocks it by pulling an operation strap (not shown), and backs up by the biasing force of the spiral spring. The frame 10 can be rotated forward and folded to the cushion frame 20 side.

The cushion frame 20 is formed of a substantially rectangular frame serving as a skeleton of the seat cushion 2, and as shown in FIG. 3, a side frame 21 made of a sheet metal member disposed on the left and right sides, and a front side of each side frame 21. A front connecting pipe 22 that connects the parts, a rear connecting pipe 23 that connects the rear parts of the side frames, a pan frame 24 as a plate-like frame installed on the upper surface of the front connecting pipe 22, and the pan frame 24 and the rear A plurality of spring members 26 that connect the connecting pipe 23 are provided as main components.
The spring member 26 corresponds to an occupant buttock support member in the claims.

The upper end portion of the piston damper 47 is rotatably connected to a substantially central portion of the side frame 21 in the front-rear direction by fastening a rotation bolt (not shown) in the left-right direction of the seat.
A connection bracket 22 a for connecting the detachable leg 30 to be rotatable is attached to the front connection pipe 22. The connection bracket 22a supports the upper end portion of the detachable leg 30 so as to be rotatable by fastening a rotation bolt (not shown) in the left-right direction of the seat.
The rear connection pipe 23 has two left and right connection brackets 23a for rotatably connecting the rotation link 40 to a lower end portion thereof, and a skin latching portion 25 disposed at the rear end portion so as to extend in the left-right direction. , Is attached. A cushion lock device 50 is attached between the left and right connecting brackets 23a.
The coupling bracket 23a supports the upper end of the rotation link 40 so as to be rotatable by fastening a rotation bolt (not shown) in the left-right direction of the seat, and is more than the cushion lock device 50 when in the seat storage state. It has a configuration located in the front.

The skin latching portion 25 is a wire member for latching the skin 2b constituting the seat cushion 2, and, as shown in FIG. The left and right ends of the portion 25a are bent to be attached along the outer edge of the rear connection pipe 23, and the bent portion 25c is formed by bending the substantially central portion of the latching main body portion 25a. .
The latching main body portion 25a is disposed so as to protrude rearward from the connection bracket 23a, and is in a positional relationship that does not interfere with the connection bracket 23a and the rotation link 40.
The bending portion 25c includes a pair of left and right inclined portions that are continuously inclined upward in the left-right inner direction from the latching main body portion 25a, and a horizontal portion that connects the upper ends of the left and right inclined portions.
The curved portion 25c is formed in a portion of the latching main body portion 25a that faces the cushion lock device 50, and has a positional relationship in which the skin latching portion 25 and the cushion lock device 50 do not interfere with each other.

The spring member 26 is a member that supports a position corresponding to the buttocks of an occupant to be seated, and includes a wave-shaped linear member called an S spring or a zigzag spring.
As shown in FIG. 3, the plurality of spring members 26 are disposed at predetermined intervals in the left-right direction and extend while meandering so as to be substantially parallel to the front-rear direction.
Among the three spring members 26, as shown in FIG. 3, a cushion lock device 50 is arranged between the left spring member 26 and the central spring member 26 in the left-right direction. Therefore, when the seat is moved, the spring member 26 and the cushion lock device 50 are stored compactly without interfering with each other.
In place of the spring member 26, an elastic body such as elastic rubber may be used.

As shown in FIG. 3, the detachable leg 30 is a member that is formed of a substantially U-shaped sheet metal member that extends in the vertical direction and supports the seat cushion 2.
The detachable leg 30 is disposed at the upper end of the detachable leg 30, the leg pivot shaft 30 a serving as the pivot center of the detachable leg 30, and the engagement hook 32 detachably engaged with the striker 37 on the vehicle body floor. And a leg lock device 31 that locks the engagement hook 32 to the striker 37.
An urging spring (not shown) is attached to the leg rotation shaft 30a, and the detachable leg 30 is disposed at a position where it can engage with the striker 37 on the vehicle body floor side by the urging force of the urging spring.
The detachable leg 30 is connected to the rotation link 40 via the transmission member 46, and after the unlocking of the leg lock device 31, the seat rearward about the leg rotation shaft 30a is interlocked with the rotation of the rotation link 40. It is configured to rotate to the side and to be folded to the seat cushion 2 side.

As shown in FIGS. 5 to 9, the leg lock device 31 is a device that engages the striker 37 by moving the engagement hook 32 in the left-right direction.
Further, the leg lock device 31 is connected to a switching device (not shown) via a cable member 39, and a lockable state in which the engagement hook 32 can be locked to the striker 37 by the switching device, and a lockable state in which the lock cannot be locked. It can be switched between and.

As shown in FIG. 4, the leg lock device 31 includes an engagement hook 32, a first rotation plate 33, a second rotation plate 34, an operation plate 35, and a second rotation plate 34 in FIG. 4. An urging spring 36 that urges the position shown in FIG.
The engagement hook 32 is provided at a substantially central portion in the vertical direction, and is a hook rotation shaft 32 a that is pivotally supported by the attachment / detachment leg 30 in the front-rear direction, and a protrusion 32 b that is provided at the lower end portion and is latched by the striker 37. And. When the engagement hook 32 rotates around the hook rotation shaft 32a, the projecting portion 32b moves in the left-right direction and engages with or disengages from the striker 37.

The first rotation plate 33 includes a first rotation shaft 33 a that is pivotally supported on the attachment / detachment leg 30 in the front-rear direction, and is connected to a cable member 39 described later.
The second rotation plate 34 includes a second rotation shaft 34a that is pivotally supported by the attachment / detachment leg 30 in the front-rear direction, a latch pin 34b that extends in the front-rear direction and is engaged with one end of the biasing spring 36, The connection pin 34c connected to the leg 30 is provided, and the connection pin 34c passes through a through hole (not shown) formed in the operation plate 35.
The operation plate 35 includes an operation rotation shaft 35a that is pivotally supported by the engagement hook 32 in the front-rear direction, and a latch pin 35b that extends in the front-rear direction and is engaged with the other end of the biasing spring 36. Yes.

As shown in FIG. 3 or FIG. 8, the striker 37 is composed of a substantially U-shaped pipe member extending in the front-rear direction. The striker 37 is fixed on the vehicle floor via a fixing member 38 and is engaged with the detachable leg 30. It is a member.
The striker 37 is erected from the upper surface of the fixing member 38 and connects the upper ends of the front leg portion 37a and the rear leg portion 37b, and the front leg portion 37a and the rear leg portion 37b, which are arranged at different positions in the front-rear direction, And a leg connecting portion 37 c that can be engaged with 32.
The leg connecting portion 37c is a portion engaged with the engagement hook 32 and extends substantially horizontally in the front-rear direction.

The fixing member 38 is made of a substantially rhombus-shaped sheet metal member extending in the front-rear direction, and includes a first fixing portion 38a, a second fixing portion 38b, as a portion where a fastening bolt (not shown) is fastened in the vertical direction toward the vehicle body floor. And a third fixing portion 38c.
The first fixing portion 38a and the second fixing portion 38b are disposed opposite each other in the front-rear direction and spaced apart in the left-right direction, and the first fixing portion 38a and the second fixing portion 38b are arranged between the first fixing portion 38a and the second fixing portion 38b. Three fixing portions 38c are provided.
The third fixing portion 38c is disposed behind the first fixing portion 38a and the second fixing portion 38b.

The striker 37 is provided between the first fixing portion 38a and the second fixing portion 38b in the left-right direction, and is disposed in front of the third fixing portion 38c.
In addition, the rear leg portion 37b of the striker 37 is disposed in a region surrounded by the first fixing portion 38a, the second fixing portion 38b, and the third fixing portion 38c.
The portion of the fixing member 38 to which the striker 37 is connected is an overhanging portion that protrudes upward from the first fixing portion 38a, the second fixing portion 38b, and the third fixing portion 38c. Support rigidity is increased.

The cable member 39 is formed of a known cable member. As shown in FIG. 4, the leg locking device 31 and a switching device (not shown) are connected to each other, and pulled by the switching device to lock the leg locking device 31. It is to switch to the lock disabled state.

With the above configuration, the leg locking device 31 is in a locked state in which the engagement hook 32 is engaged with the striker 37 when in the position shown in FIG.
When the cable member 39 is pulled in the direction of the arrow shown in FIG. 5 from the position shown in FIG. 4, the engagement hook 32 is unlocked from the striker 37. Further, the cable locking member 39 is always pulled in the direction of the arrow shown in FIG.
When the cable member 39 is released from the pulled state as shown in FIG. 6 from the position shown in FIG. 5, the leg lock device 31 is switched to the lockable state.
When the engaging hook 32 of the attachment / detachment leg 30 is pressed against the striker 37 from the position shown in FIG. 6, the locked state where the engaging hook 32 is engaged with the striker 37 is returned as shown in FIG. 7. Details will be described later.

As shown in FIG. 3, the rotation link 40 is a long member that moves the seat cushion 2 to the storage position, and the first rotation disposed as the three rotation links 40 on the left side portion of the seat cushion 2. A link 41; a second rotation link 42 disposed on the right side portion of the seat cushion 2; and a third rotation link 43 disposed on the right side of the second rotation link 42 and functioning as a guide link. ing.
Further, as shown in FIG. 3, a piston damper 47 made of a long member is disposed on the right side of the third rotation link 43, and the first rotation link 41 and the second rotation link 42 are connected to each other. A cushion lock device 50 is disposed between the left and right directions.

The first rotation link 41 and the second rotation link 42 are rotatably connected to a connection bracket 23a attached to the rear end portion of the seat cushion 2, and the lower ends are attached to the vehicle floor. It is configured to be connected to the link rotation shaft 44.
Similarly, the third rotation link 43 is configured such that the upper end is rotatably connected to a connection bracket 23 a attached to the rear end of the seat cushion 2, and the lower end is connected to the vehicle body floor side as a link rotation shaft 45. Thus, the seat cushion 2 is guided to move to the storage position along a predetermined track during the storage operation of the seat body.

A link urging spring (not shown) is attached to each of the

link rotation shafts

44 and 45, and the rotation link 40 is always moved to the storage position side about the

link rotation shafts

44 and 45 by the link urging spring. It is energized.
The rotation link 40 is connected to the detachable leg 30 via the seat cushion 2. Therefore, since the detachable leg 30 and the striker 37 on the vehicle body floor side are locked when the pivot link 40 is in a seatable state, the pivot link 40 is positioned to support the seat cushion 2 from below against the link biasing spring. The configuration is retained.
Further, the rotation link 40 rotates about the

link rotation shafts

44 and 45 so that the seat cushion 2 is moved to the storage position by the biasing force of the link biasing spring after unlocking the attachment / detachment leg 30 and the striker 37. It becomes the composition to do.

As shown in FIG. 2, a transmission member 46 that is directly connected to the attachment / detachment leg 30 is attached to a portion below the rotation shaft 42 a provided at the upper end of the second rotation link 42.
As shown in FIG. 2, the transmission member 46 includes a long transmission main body 46a, a transmission rotation shaft 46b pivotally supported by the second rotation link 42 in the left-right direction, and one end at the front end of the transmission main body 46a. The other end of the detachable leg 30 is connected to the lower part of the detachable leg 30 and is fixed to the lower part of the leg rotating shaft 30a.

The transmission main body 46a is rotatable about the transmission rotation shaft 46b with respect to the second rotation link 42, and is disposed to be inclined backward by a predetermined angle with respect to the horizontal plane. When the transmission main body portion 46a is in the seatable state, the transmission main body portion 46a is arranged so as to extend across the longitudinal direction of the second rotation link 42 as shown in FIG. The rotating link 42 is disposed so as to extend substantially in parallel along the longitudinal direction.

The transmission link 46c is formed in a substantially bow shape when viewed from the side of the seat, and includes a transmission link rotation shaft 46d that is pivotally supported in the left-right direction at the front end of the transmission main body 46a.
The transmission link 46c is configured to rotate around the transmission link rotation shaft 46d so that the detachable leg 30 is folded and rotated to the seat cushion 2 side. Specifically, among the transmission links 46c, the transmission link rotation shaft 46d moves relative to the front side with respect to the seat cushion 2, in other words, moves in a direction approaching the leg rotation shaft 30a. The transmission link 46c rotates with the attachment / detachment leg 30 to the rear side of the seat.
The transmission link 46c has a substantially crank shape bent in the left-right direction, and the transmission link rotation shaft 46d is disposed on the left and right outside of the leg rotation shaft 30a, and does not interfere with each other.

The piston damper 47 is an urging member that applies an urging force toward the outside in the extending direction, and urges the seat cushion 2 upward when it is in a seatable state.
As shown in FIG. 2, the piston damper 47 is configured such that the upper end is rotatably connected to the right side surface of the seat cushion 2 and the lower end is connected to the vehicle body floor side as a damper rotation shaft 47a.
An urging spring (not shown) is attached to the damper rotation shaft 47a, and the piston damper 47 is always moved to the storage position centered on the damper rotation shaft 47a by the urging spring, like the rotation link 40. It is energized.
When the piston damper 47 is in a seatable state, the piston damper 47 is held at a position that supports the seat cushion 2 against the biasing spring.

With the configuration of the detachable leg 30, the rotation link 40, the transmission member 46, and the piston damper 47, the rotation of the rotation link 40 is transmitted to the detachment leg 30 by the transmission member 46 when the sheet is moved.
Specifically, the rotation link 40 rotates rearward about the link rotation shaft 44. The piston damper 47 similarly rotates backward in conjunction with the rearward rotation of the rotation link 40, and the upward biasing force of the piston damper 47 that biases the seat cushion 2 upward gradually decreases.
As the upward urging force of the piston damper 47 decreases, the seat cushion 2 connected to the rotation shaft 42a at the upper end of the rotation link 40 and the detachable leg 30 connected to the seat cushion 2 are rotated by the weight of their own weight. The sheet rotates around the sheet 42a.
As the seat cushion 2 and the attachment / detachment leg 30 rotate downward, the transmission link 46c fixed to the attachment / detachment leg 30 similarly rotates down the seat around the rotation shaft 42a.
As a result, the transmission main body 46a rotates about the transmission rotation shaft 46b below the seat, and the transmission link rotation shaft 46d that connects the transmission main body 46a and the transmission link 46c moves forward with respect to the seat cushion 2. Will move sideways. And the attachment / detachment leg 30 is configured to rotate to the rear side of the seat together with the transmission link 46c.

As shown in FIG. 2 or FIG. 9, the cushion lock device 50 is a device that engages the striker 54 by moving the engagement hook 51 in the left-right direction.
The cushion lock device 50 is connected to an operation lever (not shown) via a cable member 55, and the engagement hook 51 can be detached from the striker 54 by pulling the operation lever. More specifically, the engaging hook 51 can be switched from the engageable position where it can engage with the striker 54 to the disengageable position by pulling the operation lever.

As shown in FIG. 9A, the cushion lock device 50 mainly includes an engagement hook 51, an urging spring 52 that urges the engagement hook 51 to an engageable position, and an operation plate 53. Is done.
The engagement hook 51 is provided in the upper portion, and is provided in the lower portion and the hook rotation shaft 51a that is pivotally supported in the front-rear direction by the rear connection pipe 23 of the cushion frame 20 via a connection bracket (not shown). A connecting pin 51b extending in the direction and connected to the operation plate 53, and a protrusion 51c hooked to the striker 54 are provided.
When the engagement hook 51 rotates about the hook rotation shaft 51a, the projecting portion 51c moves in the left-right direction, and engages with or disengages from the striker 54. Further, the connecting pin 51 b passes through a through hole (not shown) formed in the operation plate 53.

The urging spring 52 is wound around the hook rotation shaft 51a and is configured as a fixed end whose one end is hooked on the engagement hook 51 and whose other end is hooked on the cushion frame 20 side. ing.
One end of the operating plate 53 is connected to the engaging hook 51 via the connecting pin 51 b, and the other end is connected to the cable member 55.

In the cushion lock device 50, when in the position shown in FIG. 9A, the engagement hook 51 is disposed in the engageable position.
At this time, when the engagement hook 51 is pressed against the striker 54 on the storage floor from above, the engagement hook 51 rotates clockwise around the hook rotation shaft 51a as viewed from the back side of the seat, and the protrusion 51c The striker 54 is returned to the engageable position by the biasing force of the biasing spring 52 so as to sandwich the striker 54.
More specifically, since the connecting pin 51b of the engagement hook 51 can freely move between the through holes of the operation plate 53 in the left-right direction, the protrusion 51c abuts against the striker 54 and pushes against the striker 54. It is configured to be movable in the left-right direction by being moved.
As a result, the engagement hook 51 is engaged with the striker 54 and locked.

When the cable member 55 is pulled in the direction of the arrow shown in FIG. 9B from the position shown in FIG. 9A, the operation plate 53 causes the engagement hook 51 to hook the hook rotation shaft 51a via the connecting pin 51b. Push it clockwise around the center. As a result, the engagement hook 51 moves to the position where it cannot be engaged, and the striker 54 is released to release the lock.
As long as the cable member 55 is pulled, the engagement hook 51 is always urged to the disengageable position. When the pull of the cable member 55 is released, the engagement hook 51 returns to the engageable position.

As shown in FIG. 2, the link lock device 60 is a device in which an engagement hook 61 attached to the rotation link 40 moves in the vertical direction to engage with or disengage from the striker 62.
The engagement hook 61 is disposed on the front side wall portion of the first rotation link 41 having a closed cross-sectional structure in the rotation link 40 and is attached to a substantially central portion in the vertical direction.
The striker 62 is attached to a vehicle body floor, particularly a step surface between the vehicle body floor and the storage floor. Of the striker 62, a leg connecting portion (not shown) that engages with the engagement hook 61 extends in the left-right direction.
The link lock device 60 is unlocked at the same timing as the leg lock device 31.
With this configuration, the seat main body is stably supported on the vehicle body floor in the seatable state.

<About sheet storage operation>
Next, an operation for moving the vehicle seat S from the seatable state to the stored state will be described with reference to FIGS. 10 and 11.
When the vehicle seat S is in the seatable state shown in FIG. 10A, the seat back 1 is locked in the standing state by the reclining device 12, and the seat cushion 2 is secured by the detachable leg 30 and the rotating link 40. The configuration is supported from below.
At this time, the leg lock device 31 is in the locked state shown in FIG. 4 in which the engagement hook 32 is engaged with the striker 37.

Next, when the vehicle seat S is moved from the seatable state to the stowed state, for example, an operation strap (not shown) provided on the upper surface of the seat back 1 is operated.
When the occupant pulls the operation strap, the reclining device 12 is unlocked as shown in FIG. 10B, and the seat back 1 is centered on the rotation shaft 13 by the biasing force of a spiral spring (not shown). Folding rotation to the seat cushion 2 side is started.
When the seat back 1 is folded to a predetermined rotational position, the leg lock device 31 releases the lock between the engagement hook 32 of the detachable leg 30 and the striker 37, and the pivot link 40 is biased by the link biasing spring. Thus, the rotation starts so as to move the seat cushion 2 to the storage position. At this time, since the piston damper 47 urges the seat cushion 2 upward, the seat cushion 2 moves so as to jump up when the lock is released.
The switching device (not shown) and the leg lock device 31 are connected by the cable member 39, and when the seat back 1 is folded to a predetermined rotational position, one end of the cable member 39 is pulled by the switching device, The leg lock device 31 connected to the other end of the cable member 39 is unlocked.

Specifically, when the cable member 39 is pulled in the direction of the arrow shown in FIG. 5 with respect to the leg locking device 31, first, the first rotating plate 33 is viewed from the back side of the seat around the first rotating shaft 33a. Rotate counterclockwise. The first rotation plate 33 abuts on the second rotation plate 34, and the second rotation plate 34 is rotated clockwise around the second rotation shaft 34a against the urging force of the urging spring 36. Push around.
The second rotating plate 34 rotates so as to draw the operating plate 35 toward the second rotating plate 34 via the connecting pin 34c. More specifically, the operation plate 35 rotates counterclockwise about the operation rotation shaft 35a, and moves to a position away from the position in contact with the second rotation shaft 34a.
In conjunction with the rotation of the operation plate 35, the engagement hook 32 connected to the operation plate 35 via the connection shaft 35b is pushed clockwise around the hook rotation shaft 32a. As the engagement hook 32 rotates, the engagement hook 32 gradually separates from the striker 37.
As a result, when the leg locking device 31 is in the position shown in FIG. 5, the engagement hook 32 is unlocked from the striker 37. Further, the cable locking member 39 is always pulled in the direction of the arrow, so that the leg locking device 31 is maintained in an unlockable state.

Next, when the rotation link 40 starts to rotate so as to move the seat cushion 2 to the storage position, the attachment / detachment leg 30 rotates so as to be folded to the seat cushion 2 side in conjunction with the rotation of the rotation link 40. start.
Specifically, the upper end of the attachment / detachment leg 30 and the upper end of the rotation link 40 are connected by the transmission member 46, and the rotation of the rotation link 40 is transmitted to the attachment / detachment leg 30 by the transmission member 46. As a result, when the rotation link 40 starts to rotate rearward of the seat, the detachable leg 30 starts to fold and rotate toward the seat cushion 2 side.

Next, as shown in FIG. 11A, when the seat cushion 2 reaches a predetermined position toward the storage position, in other words, when the rotation link 40 and the detachable leg 30 reach a predetermined rotation position. The leg locking device 31 that is released from the state where one end of the cable member 39 is pulled by the switching device (not shown) and is connected to the other end of the cable member 39 is changed from the non-lockable state to the lockable state shown in FIG. It will be switched.

Specifically, when the cable locking member 39 is released from the pulled state as shown in FIG. 6, the first rotation plate 33 rotates clockwise around the first rotation shaft 33a. Rotate to. The second rotation plate 34 is released from the first rotation plate 33, is urged by the urging spring 36, rotates counterclockwise about the second rotation shaft 34 a, and contacts the engagement hook 32. .
Then, the second rotation plate 34 pushes the engagement hook 32 clockwise around the hook rotation shaft 32a. The engagement hook 32 is regulated by the operation plate 35 connected via the connection shaft 35b, and rotates to a position shown in FIG.
As a result, the leg lock device 31 is switched to a lockable state.

As a result of the series of operations, as shown in FIG. 11B, the seat cushion 2 and the seat back 1 constituting the seat body are stored in the storage position, and the vehicle seat S moves to the storage state. When the seat is moved to the seat storage state, the engagement hook 51 of the cushion lock device 50 is engaged with the striker 54 on the storage floor.

<Seat return operation>
Next, an operation for returning the vehicle seat S from the stored state to the seatable state will be described with reference to FIGS. 12 and 13.
When returning the vehicle seat S from the stored state to the seatable state, as shown in FIG. 12B, for example, the occupant manually raises the seat body upward. At this time, for example, by pulling an operation lever (not shown) provided on the back of the seat back 1, the cushion lock device 50 is unlocked.
The pivot link 40 causes the seat body to rotate and rotates to the front side of the seat about the link pivot shaft 44 so as to move the seat cushion 2 to the seating position.
At this time, the attachment / detachment leg 30 rotates in the seat front side around the leg rotation shaft 30a from the folded state to the seat cushion 2 side in conjunction with the rotation of the rotation link 40.

As shown in FIG. 13A, when the seat main body is fully raised, the engagement hook 32 and the striker 37 of the detachable leg 30 are locked by the leg lock device 31.
Regarding the leg lock device 31, specifically, when the engagement hook 32 of the detachable leg 30 is pressed against the striker 37, the engagement hook 32 is centered on the hook rotation shaft 32a as shown in FIG. Rotate counterclockwise to pinch.
As a result, the leg lock device 31 returns to the locked state in which the engagement hook 32 is engaged with the striker 37.

Next, after raising the seat body, the seat back 1 is raised from the folded state to the seat cushion 2 side.
As shown in FIG. 13B, when the seat back 1 is raised to a predetermined rotational position, the seat back 1 returns to the seatable position.
The vehicle seat S is returned to the seatable state by the series of operations described above.

<About other embodiments>
In the above-described embodiment, the vehicle seat S is configured to be able to be stored in the storage position in which the seat cushion 2 is formed at the rear of the seat, but is not limited thereto, for example, the seat cushion 2 is positioned at the front of the seat. It is good also as a structure which can be accommodated in the formed accommodation position.

In the above embodiment, one detachable leg 30 of the vehicle seat S is attached to the front end portion of the seat cushion 2, but is not limited to this, and the attachment position and quantity to the seat cushion 2 are appropriately changed. Is possible. For example, a configuration in which a detachable leg is separately attached to the rear end portion of the seat cushion 2 may be employed. By comprising in this way, the support rigidity of the attachment / detachment leg 30 which supports the seat cushion 2 from the downward direction improves.

In the above embodiment, the detachable leg 30 includes the engagement hook 32 as an engaged portion that is detachably engaged with the striker 37, but the striker 37 is not limited to the shape of the engagement hook 32. As long as it can be detachably engaged, it can be changed as appropriate.
Similarly, any floor engaging portion that can be engaged with the engaging hook 32 can be appropriately changed without being limited to the shape of the striker 37.

In the above-described embodiment, a stowable vehicle seat used for an automobile has been described as a specific example. However, the seat is not limited to this, and a vehicle seat for a train, a bus, etc. Can also be used.

In the present embodiment, the vehicle seat according to the present invention has been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.
In particular, the arrangement and configuration of the detachable leg 30, the leg lock device 31, the rotation link 40, and the cushion lock device 50 described in the above embodiment are merely examples, and limit the present invention. is not.

S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 2 Seat cushion 3 Headrest 10 Back frame 11 Connection bracket 12 Reclining device 13 Rotating shaft 20 Cushion frame 21 Side frame 22 Front connection pipe 22a Connection Bracket 23 Rear connection pipe 23a Connection bracket 24 Pan frame 25 Skin latching portion 25a Latching main body portion 25b Mounting portion 25c Bending portion 26 Spring member 30 Removable leg 30a Leg rotation shaft 31 Leg lock device 32 Engagement hook 32a Hook rotation Shaft 32b Protruding portion 33 First rotating plate 33a First rotating shaft 34 Second rotating plate 34a Second rotating shaft 34b Latching pin 34c Connecting pin 35 Operating plate 35a Operating rotating shaft 35b Latching pin 36 Biasing spring 37 Striker 37a Front leg portion 37b Rear leg portion 37c Leg connecting portion 38 Fixing member 38a First fixing portion 38b Second fixing portion 38c Third fixing portion 39 Cable member 40 Rotating link 41 First time Moving link 42 second rotating link 42a rotating shaft 43 third rotating links 44, 45 link rotating shaft 46 transmission member 46a transmission main body 46b transmission rotating shaft 46c transmission link 46d transmission link rotating shaft 47 piston damper 47a Damper rotation shaft 50 Cushion lock device 51 Engagement hook 51a Hook rotation shaft 51b Connecting pin 51c Protruding portion 52 Biasing spring 53 Actuating plate 54 Striker 55 Cable member 60 Link lock device 61 Engagement hook 62 Striker

Claims

A vehicle seat that is switchable between a seatable state in which an occupant can be seated and a storage state in which a seat cushion is moved to a storage position formed on a vehicle body floor,
A detachable leg having one end attached to the seat cushion and a first engaged portion provided at the other end removably coupled to a first floor engaging portion provided on the vehicle body floor;
One end is attached to the seat cushion, the other end is rotatably connected to the vehicle body floor, and a rotation link rotatable to move the seat cushion to the storage position side,
A second engaged portion attached to the rotating link and detachably connected to a second floor engaging portion provided on the vehicle body floor;
The first engaged portion of the detachable leg protrudes in a direction orthogonal to the moving direction of the seat cushion with respect to the first floor engaging portion,
A portion of the first floor engaging portion that is engageable with the first engaged portion extends along a moving direction of the seat cushion.
The second engaged portion of the rotating link protrudes in a direction perpendicular to the protruding direction of the first engaged portion with respect to the second floor engaging portion,
A portion of the second floor engaging portion that can be engaged with the second engaged portion extends from a portion of the first floor engaging portion that can be engaged with the first engaged portion. The vehicle seat according to claim 1, wherein the vehicle seat extends along a direction orthogonal to the direction.
The second engaged portion is
It is connected to the second floor engaging portion when in the seatable state,
The vehicle seat according to claim 1, wherein the seat cushion is disposed on an inner side in a seat front-rear direction than the rotation link.
One end is attached to the seat cushion, the other end is connected to the vehicle body floor, and includes a biasing member that biases the seat cushion upward,
The biasing member applies a biasing force toward the outside in the extending direction of the biasing member,
4. The vehicle seat according to claim 1, wherein the second engaged portion is disposed at a position overlapping the urging member in the front-rear direction of the seat. 5.
The seat cushion is attached to one end of the seat cushion in the front-rear direction where the storage position is formed, and is detachably connected to a third floor engaging portion provided on the vehicle body floor in the storage state. A third engaged portion,
The said 2nd to-be-engaged part is arrange | positioned between the said 1st to-be-engaged part and the said 3rd to-be-engaged part in the sheet | seat front-back direction, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The vehicle seat according to Item.
The first floor engaging portion includes a striker engaged with the first engaged portion, and a fixing member that fixes the striker to a vehicle body floor,
The striker is erected from the upper surface of the fixing member, and connects the front leg portion and the rear leg portion, which are disposed at different positions in the seat front-rear direction, the front leg portion and the rear leg portion, and the first engaged portion. A leg connecting portion engageable with,
Of the fixing member, the portion where the front leg portion and the rear leg portion are connected to each other is formed to protrude upward from the fixing member,
The one end located on the outer side in the front-rear direction of the seat cushion among both ends of the fixing member in the front-rear direction of the seat extends so as to become narrower toward the outer side in the front-rear direction. The vehicle seat according to any one of 1 to 5.
The first floor engaging portion includes a striker engaged with the first engaged portion, and a fixing member that fixes the striker to a vehicle body floor,
The striker is erected from the upper surface of the fixing member, and connects the front leg portion and the rear leg portion, which are disposed at different positions in the seat front-rear direction, the front leg portion and the rear leg portion, and the first engaged portion. A leg connecting portion engageable with,
The fixing member includes a first fixing part and a second fixing part arranged at different positions in the seat width direction, a third fixing part arranged behind the first fixing part and the second fixing part, With
6. The rear leg portion of the striker is disposed in a region surrounded by the first fixing portion, the second fixing portion, and the third fixing portion. The vehicle seat according to any one of claims.