JP2020132060A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which suppresses the number of components and is capable of preventing a seat cushion from vibrating when a vehicle is traveling.SOLUTION: A vehicle seat comprises a cushion lock device 60 to connect a seat cushion to a seat back in a rotatable manner and is switchable between a seatable state and a storage state. The cushion lock device 60 has: a lock member 70 which is attached to the seat cushion side; a lock object member 71 which is attached to the seat back side and engages with the lock member 70 so as to lock the rotating movement of the seat cushion; and a position retaining member 74 which retains at least one of the position of the lock member 70 and the position of the lock object member 71 while in the seatable state in order to keep the state in which a gap C is formed between an engaging part provided to the lock member 70 and an engaged part provided to the lock object member 71.SELECTED DRAWING: Figure 12A

Description

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 seatable state.

Conventionally, a vehicle seat capable of storing the seat back and the seat cushion constituting the seat body at a position lower than the vehicle body floor has already been known, and the seat body is provided in front of the seat by tilting it forward. There is a vehicle seat that can be stored on the storage floor (see, for example, Patent Documents 1 and 2).

In the vehicle seat described in Patent Document 1, the seat rotation shaft (floor side support shaft) that is attached to the vehicle body floor and rotatably supports the seat back and the seat cushion can be rotated with respect to the seat back. In addition to being connected, the seat body is provided with a cushion lock device (latch device) that locks the rotational operation of the seat cushion when the seat body is in a seatable state in which a seated person can be seated.
During the storage operation of the seat body, the seat back rotates so as to move the seat cushion to the storage floor with respect to the vehicle body floor, so that the seat body can be stored in the storage floor.
Further, the vehicle seat has a configuration in which the seat can be switched from a seatable state in which the occupant can be seated to a tip-up state in which the seat cushion is flipped upward.

In the automobile seat described in Patent Document 2, in addition to a seat rotation shaft that rotatably supports the seat back with respect to the vehicle body floor, and a cushion lock device that rotatably connects the seat cushion to the seat back. It includes a leg member that extends in the vertical direction and has an upper end that supports the front portion of the seat cushion and a lower end that is rotatably held by a leg holding member fixed to the storage floor.
During the storage operation of the seat body, the seat back rotates so as to move the seat cushion to the storage floor with respect to the vehicle body floor, and the leg members rotate around the leg holding member in conjunction with the seat back, so that the seat body rotates. Can be stored on the storage floor.

JP-A-2018-52435 JP-A-2007-176404

By the way, in mass production of vehicle seats, a gap is usually set for appropriately assembling the components in consideration of the product error of the components.
Then, in the vehicle seat that can store the seat body, it is necessary to set the gap in the cushion lock device having a relatively complicated configuration, and as a result, some play occurs in the seat cushion with respect to the seat back. Will be done.
In the vehicle seat as in Patent Document 1 above, when the leg member that supports the seat cushion from below is removed from the component parts for the purpose of reducing the number of component parts, the vehicle travels because the leg member is not provided. Occasionally, the seat cushion sways (plays), and there is a risk that noise may be generated due to contact between the components inside the cushion lock device.
On the other hand, in a vehicle seat as in Patent Document 2, since the seat cushion is fixedly supported by leg members, it is possible to suppress the shaking of the seat cushion when the vehicle is running, but it is desired to reduce the number of component parts. I couldn't meet my request.
Therefore, there has been a demand for a vehicle seat that can suppress the shaking (rattling) of the seat cushion when the vehicle is running while suppressing the number of component parts.

Further, a vehicle seat capable of accommodating a seat body as in Patent Documents 1 and 2 has a relatively complicated structure such as a cushion lock device, so that the seat tends to be large.
Therefore, there has been a demand for a vehicle seat that can suppress the increase in size of the seat with a simple configuration.

The present invention has been made in view of the above problems, and an object of the present invention is to shake the seat cushion when the vehicle is running while suppressing the number of components in a seat in which the seat body can be switched from the seatable state. The purpose is to provide a vehicle seat that can prevent rattling.
Another object of the present invention is to provide a vehicle seat capable of suppressing an increase in size of the seat with a simple configuration.

According to the vehicle seat of the present invention, the problem is that the seat body having the seat back and the seat cushion is rotatably connected to the seat back, and the seat body rotatably connects the seat body to the seated person. A cushion lock device that locks the rotational operation of the seat cushion when the seat can be seated is provided, and the seatable state and the moving state in which the seat body is moved from the seatable state. A vehicle seat that can be switched between, and the cushion lock device is attached to a lock member attached to one side of the seat cushion and the seat back, and to the other side of the seat cushion and the seat back. , The locked member that engages with the lock member to lock the rotational operation of the seat cushion, and the lock member that is attached to the lock member and the peripheral positions of the locked member and can be seated. At least one position of the lock member and the locked member in order to maintain a state in which a gap is formed between the engaged portion provided on the lock member and the engaged portion provided on the locked member. It is solved by having a position holding member which holds the above.
As described above, in the vehicle seat in which the seat body can be switched from the seatable state, the engaging portion provided on the lock member and the engaged portion provided on the locked member when the seat body can be seated Since it has a position holding member that holds at least one position of the locking member and the locked member in order to maintain the state in which a gap is formed between them, the number of component parts can be reduced by a simpler configuration than before. It is possible to realize a vehicle seat that can suppress the seat cushion from shaking (rattling) when the vehicle is running while suppressing it.
Further, since the shaking of the seat cushion can be suppressed when the vehicle is running, it is possible to suppress the generation of noise due to the contact between the components inside the cushion lock device.

At this time, the moving state is a storage state in which the seat body is stored and moved to a storage floor at a position lower than the vehicle body floor, and the seat back is rotatably connected to the vehicle body floor. Further, the lock member is further provided with a reclining device that locks the rotational operation of the seat back when the seat back can be seated, and a support base that is provided on the vehicle body floor and supports the seat cushion from below. Is attached to the seat cushion side, and the locked member may be attached to the seat back side.
With the above configuration, in the vehicle seat that can store the seat body, a vehicle seat that achieves miniaturization of the seat with a simple configuration is realized without providing any component parts on the storage floor side as compared with the conventional one. be able to.

At this time, the position holding member is formed with a contact portion for holding the position of the one by contacting the contacted portion provided on one of the lock member and the locked member.
The cushion lock device is attached to the position holding member and further has an urging member that urges the position holding member in a direction in which the contact portion is brought into contact with the contacted portion. good.
With the above configuration, with a simpler configuration, it is possible to suppress the shaking of the seat cushion when the vehicle is running, and it is possible to suppress the generation of noise due to contact between the components inside the cushion lock device.

At this time, the position holding member is urged by the urging member, and the holding position where the abutting portion abuts on the abutted portion and the abutting portion abut on the abutted portion. It is movable from the holding / releasing position, which is a non-contact position, and the position holding member receives a load from the outside in the seatable state, and the position holding member resists the urging force of the urging member from the holding position. It is preferable that the engaging portion of the locking member and the engaged portion of the locked member are engaged with each other when moving to the holding release position side.
With the above configuration, when a load exceeding a predetermined size is applied from the outside due to a collision or the like, the position holding member can be released from the holding position to the holding release position, so that the position holding member is made larger than necessary. The cushion lock device can be miniaturized without the need for.

At this time, a cushion frame serving as a skeleton of the seat cushion is provided, and the lock member and the position holding member are arranged so as to be arranged in the seat width direction, and the lock rotates on the side surface of the cushion frame in the seat width direction. It is preferable that they are connected so as to be rotatable via a shaft.
Since the lock member and the position holding member are arranged coaxially as described above, the components of the cushion lock device can be arranged compactly.

At this time, the seat cushion is connected to the seat back so as to be rotatable via the cushion rotation shaft, and the lock rotation shaft and the cushion rotation shaft are connected to the side surface of the cushion frame. The cushion lock device is arranged at different positions from each other, and further has a shaft connecting member extending along the side surface of the cushion frame to connect the lock rotating shaft and the cushion rotating shaft. good.
With the above configuration, components (lock rotation shaft and cushion rotation shaft) that require relatively high rigidity can be reinforced with a simple configuration.

At this time, the shaft connecting member is more than the first shaft support portion that pivotally supports the cushion rotation shaft, the second shaft support portion that pivotally supports the lock rotation shaft, and the second shaft support portion. It is preferable to have a notch portion that is notched in a portion close to the first shaft support portion side.
With the above configuration, the lock rotation shaft, which is slightly inferior in rigidity to the cushion rotation shaft, can be preferentially reinforced. Further, by forming a constricted portion in the shaft connecting member, it becomes easy to visually confirm the components located inside the cushion lock device.

At this time, the locked member is connected to the side surface of the cushion frame in the seat width direction so as to be rotatable via the cushion rotation shaft, and the lock member and the locked member are connected to the seat width direction. The contact portion of the position-holding member abuts on the contact projection as the contacted portion that protrudes from the side surface of the locked member toward the position-holding member side in the seat width direction. Then it is good.
With the above configuration, the cushion lock device is designed so as not to increase in size in the seat width direction, and as a result, it is possible to prevent the seat body from increasing in size in the seat width direction.

According to the present invention, it is possible to realize a vehicle seat capable of suppressing the seat cushion from shaking (rattling) when the vehicle is running, while reducing the number of components with a simple structure as compared with the conventional case. .. In addition, it is possible to suppress the generation of noise due to contact between components inside the cushion lock device.
Further, according to the present invention, in the vehicle seat that can store the seat body, the vehicle seat has been miniaturized with a simple structure without providing any component parts on the storage floor side as compared with the conventional one. Can be realized.
Further, according to the present invention, it is not necessary to make the position holding member larger than necessary, and the cushion lock device can be made smaller.
Further, according to the present invention, the components of the cushion lock device can be arranged compactly.
Further, according to the present invention, a component component that requires relatively high rigidity can be reinforced with a simple structure.
Further, according to the present invention, it becomes easy to visually confirm the components located inside the cushion lock device.
Further, according to the present invention, it is possible to prevent the cushion lock device and the seat body from becoming larger in the seat width direction.

It is a perspective view of the vehicle seat of this embodiment. It is a perspective view of the seat frame which becomes the skeleton of a vehicle seat. It is a top view of the seat frame. It is a side view of the seat frame, and is the figure which shows the reclining device. It is a side view of the seat frame, and is the figure which shows the cushion lock device. It is a side view of the vehicle seat, and is the figure which shows the seating possible state. It is a figure explaining the operation of moving from a seatable state to a stowed state. It is a figure which shows the stored state. It is a figure which shows the chip-up state. It is a figure explaining the operation of returning from a chip-up state to a seatable state. It is a figure which shows the seating possible state. It is a figure which shows the state which the lock member and the locked member are arranged in the lock position in the seatable state. It is a figure which shows the state which the 1st lock release lever moved from the lockable position to the unlockable position in the seatable state. It is a figure which shows the state which the lock member and the locked member are arranged in the lock position in the seatable state. It is a figure which shows the state which the 2nd lock release lever moved from the lockable position to the unlockable position in the seatable state. It is a figure which shows the state which the lock member and the locked member are arranged in the lock position in the tip-up state. It is a figure which shows the state which the 1st lock release lever moved from a lockable position to an unlockable position in a tip-up state. It is a figure which shows the state which the lock member and the locked member are arranged in the lock position in the tip-up state. It is a figure which shows the state which the 2nd lock release lever moved from the lockable position to the unlockable position in the tip-up state. FIG. 12A is a cross-sectional view taken along the line AA of FIG. 12A, showing a cushion lock device. It is a perspective view of the vehicle seat of the 2nd Embodiment. It is a perspective view of the vehicle seat of the 2nd Embodiment, and is the figure which shows the state which the ottoman apparatus has moved from the reference position to the movable position.

Hereinafter, the vehicle seat according to the embodiment of the present invention will be described with reference to FIGS. 1 to 18.
In this embodiment, the seat body having the seat back and the seat cushion is rotatably connected to the seat back, and the rotation operation of the seat cushion is locked when the seat body is in the seatable state. A vehicle seat that is equipped with a cushion lock device and can be switched between a seatable state and a stowed state. The cushion lock device is attached to a lock member attached to the seat cushion side and a seat back side. A locked member that engages with the lock member to lock the rotational movement of the seat cushion, and an engaging portion that is attached to the lock member and the peripheral positions of the locked member and is provided on the lock member when the seat cushion can be seated. And a position holding member that holds at least one position of the lock member and the locked member in order to hold a state in which a gap is formed between the locked member and the engaged portion provided on the locked member. It relates to the invention of a vehicle seat, which is characterized in that it is used.
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, for example, a rear seat corresponding to the rear seat of the vehicle. It can also be used as a middle seat in the second row in a vehicle having three rows of seats in the front-rear direction of the vehicle.
The vehicle seat S has three types of seat arrangements: a seatable state in which the seated person can be seated, a stored state in which the seat body is stored on the storage floor, and a chip-up state in which the seat body is flipped upward. Is a possible sheet.
Specifically, the vehicle seat S is folded forward when the seater pulls the ricla operation lever 54 at the upper end of the seat body from the seatable state shown in FIG. 6 (FIG. 6). 7), the storage state is switched to the storage state shown in FIG. 8 stored on the storage floor. Then, the seated person manually raises the seat body upward from the stored state to switch to the chip-up state shown in FIG. Further, when the seater pulls the cushion operation lever 64 at the front end of the seat body (seat cushion) from the tip-up state (see FIG. 10), a part of the seat body (seat cushion) rotates downward. It returns to the seatable state shown in FIG. Details will be described later.

As shown in FIGS. 1 and 2, the vehicle seat S is mounted on the vehicle body floor, the seat body including the seat back 1, the seat cushion 2, and the headrest 3, and the seat body can be moved in the front-rear direction. It is mainly composed of left and right rail devices 4 that support the rail device 4, a support base 30 that is mounted on the rail device 4 and supports the seat body, and a base cover 40 that covers the support base 30 from above.
Further, as shown in FIG. 2, the vehicle seat S rotatably connects the seat back 1 to the support base 30, and also rotates the seat back 1 in the seatable state and the tip-up state. A cushion that rotatably connects the seat cushion 2 to the seat back 1 and a reclining device 50 that locks the seat cushion 2 and locks the rotation operation of the seat cushion 2 in the seatable state, the stowed state, and the tip-up state. It includes a lock device 60.
A concave storage floor formed at a position lower than the vehicle body floor is provided on the front side of the vehicle seat S.

As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of the occupant from behind, and the cushion pad 1a is placed on the back frame 10 shown in FIG. 2 which is a skeleton, and the skin 1b is used. It is covered and configured.
The seat cushion 2 is a seating portion that supports the occupant from below, and is configured by placing the cushion pad 2a on the cushion frame 20 shown in FIG. 2 which is a skeleton and covering it with the skin 2b.
The headrest 3 is a head that supports the occupant's head from behind, and is configured by placing a cushion pad on a pillar (not shown) as a core material and covering it with a skin.

As shown in FIG. 2, the rail device 4 is arranged between the seat body and the vehicle body floor in the vertical direction, and is fixed to the vehicle body floor and extends to the left and right lower rails 4a and the lower rail 4a extending in the front-rear direction of the seat. Left and right upper rails 4b slidably supported along the line, a lock device (not shown) that locks the upper rail 4b to the lower rail 4a so as not to be slidable, and is operated to release the locked state of the lock device. It is mainly composed of the rail operation lever 4c shown in FIG.
Support bases 30 are erected on the upper surfaces of the left and right upper rails 4b.

As shown in FIG. 2, the back frame 10 is formed of a substantially rectangular frame-like body that serves as a skeleton of the seat back 1, and a support base 30 is formed on the outer surface of the back frame 10 in the seat width direction at a lower portion thereof. Left and right connecting brackets 11 for connecting are attached.
The connecting bracket 11 is made of a bow-shaped sheet metal member extending in the vertical direction, and the upper end of the connecting bracket 11 is attached to the back frame 10 and the lower end thereof is attached to the support base 30.
A reclining device 50 (reclining body 51) that rotatably connects the back frame 10 to the support base 30 is attached to the lower end of the connecting bracket 11 on the right side, and is attached to the lower end of the connecting bracket 11 on the left side. Is provided with a back rotation shaft 52 pivotally supported by the support base 30 in the seat width direction.

As shown in FIGS. 2 and 3, the cushion frame 20 is composed of a substantially rectangular frame-like body that serves as a skeleton of the seat cushion 2, and is provided with left and right side frames 21 arranged laterally in the seat width direction. A pan frame as a plate-shaped frame that connects a front connecting pipe 22 that connects the front portion of the side frame 21, a rear connecting pipe 23 that connects the rear portion of each side frame 21, and a front connecting pipe 22 and a rear connecting pipe 23. It is mainly composed of 24 and.

The side frame 21 is made of a sheet metal member extending in the front-rear direction of the seat, and the rail operation lever 4c shown in FIG. 1 is attached to the front end portion of the left side frame 21 via the attachment wire 25, and the right side frame 21 is attached to the right side. The cushion operation lever 64 shown in FIG. 1 is attached to the front end portion of the side frame of the above via the attachment wire 25.
A cushion lock device 60 is attached to the rear end portion of the side frame 21 on the outer surface in the seat width direction.
As shown in FIG. 3, the left and right side frames 21 are offset from the left and right rail devices 4 in the seat width direction, specifically, on the right side of the left and right rail devices 4. By the offset arrangement, a space can be secured on the outer surface of the left side frame 21, and in this space, in addition to the cushion lock device 60, the armrest 5 shown in FIG. 1 and the buckle 6 for the seat belt are attached. .. As a result, it is possible to suppress an increase in the size of the vehicle seat S in the seat width direction.

As shown in FIGS. 2 and 3, the mounting wire 25 has a substantially U-shape, and is arranged so as to be bridged between the end portion of the front connecting pipe 22 in the seat width direction and the front end portion of the side frame 21. ing.
Specifically, the attachment wire 25 bends continuously downward from the wire main body 25a to which the rail operation lever 4c (cushion operation lever 64) is attached and the inner end of the wire main body 25a in the seat width direction. The wire attachment portion 25b attached to the front connecting pipe 22 and the wire attachment portion 25c bent downward continuously from the outer end portion of the wire main body portion 25a in the seat width direction and attached to the side frame 21. are doing.
The wire attachment portion 25b has a substantially L-shape, and a part thereof extends in the seat width direction along the front connecting pipe 22.

As shown in FIG. 2, the support base 30 is a member that supports the seat body, and includes left and right side base portions 31 that are provided on the side portions in the seat width direction and are arranged along the upper rail 4b. A front base connecting portion 32 that connects the front portion of the side base portion 31, a rear base connecting portion 33 that connects the substantially central portion of each side base portion 31, and left and right reinforcing bases attached to the upper surface of each side base portion 31. It is provided with a unit 34.
The left and right ends of each of the front base connecting portion 32 and the rear base connecting portion 33 are sandwiched and connected between the side base portion 31 and the reinforcing base portion 34.

As shown in FIG. 1, the base cover 40 is a resin molded product that covers the entire support base 30 and the rail device 4 from above.
The base cover 40 has a function of protecting the support base 30 and the rail device 4 from the outside, and also has a function of guiding the movement of the seat body (seat cushion 2) when the seat body is switched from the seatable state to the stowed state. There is.
The base cover 40 is provided on the side portion in the seat width direction, and is provided between the left and right cover projecting portions 41 formed so as to project upward toward the seat cushion 2 and the left and right cover projecting portions 41. The cover accommodating recess 42, which is formed so as to be recessed below the cover projecting portion 41 and for accommodating the contained object, is mainly provided.
The cover protrusion 41 has the highest upper surface at the central portion in the front-rear direction of the seat, and the storage floor is arranged on the extension line of the inclined surface in front of the seat.
As shown in FIG. 11, the cover protrusion 41 comes into contact with a cushion cover (not shown) that protects the seat cushion 2 when the seat body moves from the seatable state to the stored state, and the cushion cover is placed on the storage floor side. It has a function to slide (slide) to. That is, the seat cushion 2 is configured to be guided by the base cover 40 and smoothly head toward the storage floor.

As shown in FIGS. 2 and 4, the reclining device 50 is arranged on the inner surface of the connecting bracket 11 on the right side 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 the back frame 10 is rotated, a back rotation shaft 52, and a spiral spring that urges the back frame 10 to rotate forward about the back rotation shaft 52. It is mainly composed of 53, a reclining operation lever 54 of FIG. 1 operated to release the locked state of the back frame 10, and a reclining cable 55 connecting the reclining operation lever 54 and the reclining main body 51. ing.

The reclining body 51 has a known locking mechanism, and the state of the back frame 10 is set between a locked state fixed to the support base 30 and an unlocked state rotatable with respect to the support base 30. It is possible to switch.
The back rotation shaft 52 is pivotally supported by the back frame 10 side and the support base 30 side in the seat width direction, and one end of the spiral spring 53 is locked to the back frame 10 side and the other end is the support base 30 side. Is locked in.
The ricla cable 55 is pulled by the operation of the ricla 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 to the upright posture shown in FIG. 6, releases the locked state by operating the ricla operation lever 54, and pushes the back frame 10 by the urging force of the spiral spring 53. It can be rotated to the front side and folded to the vehicle body floor side (see FIG. 7).

As shown in FIGS. 2 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 operation of the cushion frame 20, a cushion rotation shaft 62, and a spiral spring that urges the cushion frame 20 downward about the cushion rotation shaft 62. 63, the cushion operation lever 64 of FIG. 1 operated to release the locked state of the cushion frame 20, the first cushion cable 65 connecting the above-mentioned liquor operation lever 54 and the lock body 61, and the cushion. It is mainly composed of a second cushion cable 66 that connects the operation lever 64 and the lock body 61.
The details of the lock body 61 will be described later.

The cushion rotation shaft 62 is pivotally supported by the back frame 10 side and the cushion frame 20 side in the seat width direction, and one end of the spiral spring 63 is locked to the back frame 10 side and the other end is the cushion frame 20 side. Is locked in.
The cushion operation lever 64 is attached to the front end of the cushion frame 20, and is arranged at the right end of the cushion frame 20, in other words, at the end of the vehicle seat S on the vehicle door side. Therefore, it is possible for the occupant to operate the cushion operation lever 64 from outside the vehicle with the vehicle door open.

The first cushion cable 65 extends in the vertical direction along the outer surface of the back frame 10 and acts to switch the cushion frame 20 from the locked state to the unlocked state by being pulled by the operation of the operation lever 54 for the ricla. To do.
Further, the second cushion cable 66 extends in the front-rear direction of the seat along the outer surface of the cushion frame 20, and is pulled by the operation of the cushion operation lever 64 to switch the cushion frame 20 from the locked state to the unlocked state. Acts like.

The cushion lock device 60 locks the cushion frame 20 in the horizontal posture shown in FIG. 6, and when the operation lever 54 for the liquor is operated, the locked state is released in conjunction with the back frame 10, and the urging force of the spiral spring 63 causes the cushion frame 20 to be released. The cushion frame 20 can be folded toward the vehicle body floor side while urging the cushion frame 20 toward the front side (see FIG. 7).
Further, the cushion lock device 60 releases the locked state of the cushion frame 20 by operating the cushion operation lever 64 in the seatable state, and moves the cushion frame 20 upward against the urging force of the spiral spring 63. By raising it, it can be moved to the chip-up state shown in FIG. Then, when the cushion operation lever 64 is operated again in the tip-up state (see FIG. 10), the cushion frame 20 is rotated downward with respect to the back frame 10 by the urging force of the spiral spring 63, and is shown in FIG. It can be returned to the seatable state.

In the above configuration, as shown in FIG. 2, the reclining device 50 is arranged on the right side of the seat body in the seat width direction, while the cushion lock device 60 is arranged on the left side of the seat body. Therefore, relatively large components are arranged in a well-balanced manner, and the balance of the entire seat body is improved.

<Seat storage operation>
Next, an operation of moving the seat body from the seatable state to the stored state will be described with reference to FIGS. 6-8. In FIGS. 6-8, the reclining device 50 and the cushion lock device 60 indicate a locked state when shown by black circles and an unlocked state when shown by white circles. The same applies to FIGS. 9-10.

When the vehicle seat S is in the seatable state shown in FIG. 6, the seat back 1 is supported by the support base 30 and locked in the upright posture by the reclining device 50. Further, the seat cushion 2 connected to the seat back 1 is supported from below by the base cover 40 (support base 30).

When moving the vehicle seat S from the seatable state to the stored state, the ricla operation lever 54 provided on the upper surface of the seat back 1 is operated.
When the seated person operates the operation lever 54 for the ricla, the cable 55 for the ricla and the cable 65 for the first cushion are towed, respectively, and as shown in FIG. 7, the locked state of the reclining device 50 and the cushion lock device 60 is released. Will be done.
Then, the seat back 1 starts rotating toward the front side of the seat about the back rotation shaft 52 so as to move the seat cushion 2 to the storage floor by the urging force of the spiral spring 53.

As shown in FIG. 7, when the seat back 1 reaches a predetermined rotation position, the seat cushion 2 comes into contact with the surface of the base cover 40 (cover protrusion 41) and slides on the surface of the base cover 40. While moving toward the storage floor.
Then, as shown in FIG. 8, 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 operation lever 54 for the ricla. Will be.
The reclining device 50 has a known unlock canceller mechanism that maintains the unlocked state of the reclining device 50 when the seat back 1 rotates forward of the seat by a predetermined angle with respect to the vehicle body floor. There is. Therefore, the seat back 1 can rotate with respect to the vehicle body floor even after the operation of the Ricla operation lever 54 is completed.
By the above series of operations, the seat body is stored in the storage floor, and the vehicle seat S is switched to the stored state.

<Seat tip up operation>
Next, the operation of moving the seat body from the stored state to the chip-up state will be described with reference to FIGS. 9 and 10.
When the vehicle seat S is in the stowed state shown in FIG. 8, for example, the occupant manually raises the seat body upward to switch to the chip-up state shown in FIG.
At this time, since the cushion lock device 60 locks the rotational operation of the seat cushion 2, the seat cushion 2 can also be integrally raised upward by raising the seat back 1.
In the tip-up state, by sliding the upper rail 4b to the rear side of the seat with respect to the lower rail 4a, a wider luggage space can be secured on the front side of the seat.

When the vehicle seat S is switched to the chip-up state shown in FIG. 9, the seat back 1 returns to the same position as the seatable position and is locked in the standing posture by the reclining device 50.

Finally, when moving the vehicle seat S from the tip-up state to the seatable state, the second cushion cable 66 is pulled by pulling the cushion operation lever 64 shown in FIG. 9, and FIG. 10 shows. As shown, the locked state of the cushion lock device 60 is released.
As the cushion lock device 60 is released, the seat cushion 2 rotates downward with respect to the seat back 1 due to the urging force of the spiral spring 63.
By the above series of operations, the vehicle seat S returns to the seatable state shown in FIG.

In addition to the above switching operation, the vehicle seat S can be moved from the seatable state to the tip-up state.
Specifically, when the seated person operates the cushion operation lever 64, the second cushion cable 66 is towed and the locked state of the cushion lock device 60 is released.
Then, by rotating the seat cushion 2 upward against the urging force of the spiral spring 63 with respect to the seat back 1, the seat cushion 2 can be directly moved to the tip-up state. At this time, the locked state of the seat back 1 by the reclining device 50 is maintained.

<Details of cushion lock device>
Next, a specific configuration of the cushion lock device 60 (lock body 61) will be described with reference to FIGS. 12A and 12A and 13A and 13B.
As shown in FIG. 12A, the cushion lock device 60 includes a lock member 70 attached to the cushion frame 20 side (side frame 21) and a locked member 71 attached to the back frame 10 side and engaged with the lock member 70. A first lock release lever 72 and a second unlock lever 73 that operate to release the locked state of the lock member 70 and the locked member 71 are provided.
Further, in the cushion lock device 60, a gap C is formed between the engaging portion 70a provided on the lock member 70 and the engaged portion 71a provided on the locked member 71 when the cushion lock device 60 is in the seatable state. In order to hold the state, a position holding member 74 that holds the position of the locked member 71 is further provided.
In the above, as shown in FIG. 12A, the cushion lock device 60 locks the cushion frame 20 when the lock member 70 is in the lock position where it engages with the locked member 71. On the other hand, as shown in FIG. 12B, when the lock member 70 is in the unlocked position where it does not engage with the locked member 71, the cushion frame 20 is brought into the unlocked state.

As shown in FIGS. 12A and 12B, the lock member 70 is located between the lock position shown around the lock rotation shaft 75 extending along the seat width direction and the unlock position moved below the lock position. It is a rotating member. Then, when it is in the seatable state, it is urged upward by the second lock release lever 73 and the second urging spring 78, and is arranged at the locked position.
Specifically, the lock member 70 is arranged on the opposite side of the engaging portion 70a and the engaging portion 70a with the lock rotating shaft 75 in between, and the second lock is released from the outer surface in the seat width direction. It has a fitting protrusion 70b protruding toward the lever 73 side.
The fitting protrusion 70b is arranged to fit with the fitting groove 73b formed on the side surface of the second lock release lever 73.
That is, the lock member 70 is arranged at the same position as the locked member 71 in the seat width direction, and is arranged inside the second unlock lever 73.

As shown in FIGS. 12A and 12B, the locked member 71 is a member that extends in the vertical direction to connect the back frame 10 and the cushion frame 20, and the upper end portion thereof is fixed to the outer surface of the back frame 10 and is the same. The lower end portion is attached to the outer surface of the side frame 21 via the cushion rotation shaft 62.
Further, the locked member 71 is arranged at the same position as the lock member 70 in the seat width direction.

The locked member 71 is arranged between the engaged portion 71a, the engaged portion 71a, and the cushion rotating shaft 62, and the first unlock lever 72 and the position holding member 74 side are arranged from the outer surface in the seat width direction. It has an abutting protrusion 71b that protrudes into the abutment protrusion 71b, and an auxiliary protrusion 71c that is arranged on the opposite side of the abutting protrusion 71b with the cushion rotation shaft 62 in between.
The abutting protrusion 71b is arranged so as to abut the first unlocking lever 72 (contact portion 72a) in order to restrict the rotation of the first unlocking lever 72, and holds the position of the locked member 71. Therefore, it is arranged so as to abut the position holding member 74 (contact portion 74a).
That is, the locked member 71 is arranged inside the first unlocking lever 72 and the position holding member 74 in the seat width direction. On the other hand, the first lock release lever 72 and the position holding member 74 are arranged at the same position in the seat width direction.

The first lock release lever 72 is connected to the outer surface of the cushion frame 20 so as to be rotatable via the cushion rotation shaft 62, and is connected to the lockable position shown in FIG. 12A and the lock release lever shown in FIG. 12B. It is a member that rotates between the possible positions.
The first lock release lever 72 is urged from the unlockable position side to the lockable position side by the first urging spring 77 attached to the outer peripheral surface of the cushion rotation shaft 62.
Further, the first unlock lever 72 is arranged at a position different from that of the lock member 70 and the locked member 71 in the seat width direction, and is arranged at a position aligned with the locked member 71 in the seat width direction. ..

The contact portion 72a, the cable attachment portion 72b to which one end of the first cushion cable 65 is attached to the first lock release lever 72, and the cable attachment portion 72b are opposite to each other with the cushion rotation shaft 62 in between. A pressing portion 72c for pressing the lock member 70 and a pressing portion 72c are formed respectively.
More specifically, the pressing portion 72c is configured to indirectly press the lock member 70 via the position holding member 74, and is pulled by the first cushion cable 65, as shown in FIG. 12A. The lock member 70 is pressed from the lockable position to the unlockable position.

The second lock release lever 73 is connected to the outer surface of the cushion frame 20 so as to be rotatable via the lever rotation shaft 76, and is at the lockable position shown in FIG. 13A and the lock release shown in FIG. 13B. It is a member that rotates between the possible positions.
The second lock release lever 73 is urged from the unlockable position side to the lockable position side by the second urging spring 78 attached to the lower end of the cushion frame 20.
The second lock release lever 73 is arranged on the opposite side of the cable attachment portion 73a to which one end of the second cushion cable 66 is attached and the cable attachment portion 73a with the lever rotation shaft 76 sandwiched between them. A fitting groove 73b that fits into the fitting protrusion 70b to move the 70 is formed.

The position holding member 74 is connected to the outer surface of the cushion frame 20 so as to be rotatable via a lock rotation shaft 75, and as shown in FIGS. 12A and 12B, the contact portion 74a has a contact projection. It is a member that rotates between a holding position that abuts on 71b and a holding / releasing position where the abutting portion 74a does not abut on the abutting projection 71b.
The position holding member 74 is urged from the holding release position side to the holding position side by a third urging spring 79 attached to the outer peripheral surface of the lock rotation shaft 75.
Further, the position holding member 74 is arranged at a position different from that of the lock member 70 and the locked member 71 in the seat width direction, and is arranged at a position aligned with the lock member 70 in the seat width direction.

The position holding member 74 pushes out the contact portion 74a for holding the position of the locked member 71 by contacting the locked member 71 (contact protrusion 71b) and the lock member 70 (fitting protrusion 70b). An extruded portion 74b for the purpose is formed, respectively.
A recessed portion 74c is formed in a portion of the position holding member 74 to which the free end of the third urging spring 79 is attached, thereby ensuring the assembly rigidity of the free end.

As shown in FIG. 16, the thickness when the lock member 70 and the position holding member 74 are superposed is T1, and the thickness when the locked member 71 and the first unlock lever 72 are superposed is T2. When this is done, T1 and T2 are set to have the same thickness.

In the above configuration, as shown in FIG. 12A, in the cushion lock device 60, a slight gap C is formed between the lock member 70 and the locked member 71 in consideration of the product error of the component parts. The position holding member 74 is arranged to hold the position of the locked member 71.
Therefore, it is possible to realize a vehicle seat S capable of suppressing the seat cushion from shaking (rattling) when the vehicle is running.
Further, in the cushion lock device 60, when the position holding member 74 receives a load from the outside and moves from the holding position to the holding release position side against the urging force of the third urging spring 79, the cushion lock device 60 is locked instead. The member 70 (engaged portion 70a) and the locked member 71 (engaged portion 71a) are configured to engage with each other.
Therefore, since the position holding member 74 can be released from the holding position to the holding release position side, it is not necessary to increase the size of the position holding member 74 more than necessary.

Further, in the above configuration, as shown in FIG. 12A, the abutting projection 71b and the auxiliary projection 71c of the locked member 71 are formed by cutting out a part of the locked member 71, respectively, with the engaged portions 71a and 71d. It is located close to.
Therefore, the portion of the locked member 71 whose rigidity is low can be reinforced by using the contact protrusion 71b and the auxiliary protrusion 71c.

Further, in the above configuration, as shown in FIG. 12A, the first lock release lever 72 and the second lock release lever 73 are arranged at different positions in the vertical direction, and are arranged so as to sandwich the lock member 70 in between. There is. Further, the first lock release lever 72 is arranged at a position above the second lock release lever 73.
Therefore, it is possible to suppress the increase in size of the cushion lock device 60 due to the compact arrangement as compared with the conventional case.

Further, in the above configuration, as shown in FIG. 12A, the portion of the first lock release lever 72 on which the pressing portion 72c is formed is formed so as to be narrow.
Therefore, the design is such that it is possible to suppress interference with other components while ensuring the rigidity as much as possible in the portion where the pressing portion 72c is formed.

Further, in the above configuration, as shown in FIGS. 2 and 12A, the second lock release lever 73 has a crank shape, and specifically, the fitting groove 73b of the second lock release lever 73 is formed. It is arranged outside the portion where the lever rotation shaft 76 is attached in the seat width direction.
Therefore, the components including the second lock release lever 73 can be arranged compactly.

Further, in the above configuration, as shown in FIG. 5, the cushion lock device 60 has a shaft connecting member 80 extending along the side surface of the cushion frame 20 in order to connect the cushion rotating shaft 62 and the lock rotating shaft 75. Further prepared. Therefore, it can be reinforced with a simple configuration.
The shaft connecting member 80 has a flat plate shape, and has a first shaft support portion 80a that pivotally supports the cushion rotation shaft 62, a second shaft support portion 80b that pivotally supports the lock rotation shaft 75, and a second shaft support portion. It has a notched portion 80c cut out in a portion closer to the first shaft support portion 80a side than the 80b.

<Operation of cushion lock device>
Next, the specific operation of the cushion lock device 60 will be described with reference to FIGS. 12A and 12A and 15A and B.
First, the operation of the cushion lock device 60 when the “ricla operation lever 54” shown in FIG. 1 is operated in the “seating possible state” will be described with reference to FIGS. 12A and 12B.
When the cushion lock device 60 is in the locked state as shown in FIG. 6, the lock member 70 is arranged at the engaging position engaged with the locked member 71 as shown in FIG. 12A. More specifically, the lock member 70 and the locked member 71 are engaged with each other in a state where a slight gap C is formed between the engaged portion 70a of the lock member 70 and the engaged portion 71a of the locked member 71. Has been done.

At this time, the first lock release lever 72 and the second lock release lever 73 are arranged at lockable positions.
More specifically, the first lock release lever 72 is urged by the first urging spring 77 and is arranged at a lockable position by abutting on the abutting projection 71b of the locked member 71. Further, the second lock release lever 73 is urged by the second urging spring 78 and is arranged at a lockable position by fitting into the fitting projection 70b of the lock member 70. In other words, the second lock release lever 73 (fitting groove 73b) holds the position of the lock member 70.
The position holding member 74 is arranged at a holding position for holding the engaging position of the locked member 71. More specifically, the position holding member 74 is urged by the third urging spring 79 and is arranged at the holding position by abutting on the contact projection 71b of the locked member 71.

Then, when the Ricla operation lever 54 is operated in the seatable state, as shown in FIG. 12B, the first lock release lever 72 is pulled by the first cushion cable 65, and the first urging spring 77 Rotates from the lockable position to the unlockable position against the urging force.
As a result, the first lock release lever 72 (pressing portion 72c) presses the lock member 70 via the position holding member 74, and the lock member 70 rotates and moves from the engagement position to the engagement release position.
More specifically, the position holding member 74 is pressed by the first lock release lever 72 and moves from the holding position to the holding release position. At this time, the position holding member 74 (extruded portion 74b) pushes out the fitting projection 70b of the lock member 70, so that the lock member 70 can be rotationally moved.
As the lock member 70 (fitting protrusion 70b) rotates, the second lock release lever 73 also rotates and moves from the lockable position to the unlockable position against the urging force of the second urging spring 78. To do.
By the above series of operations, the locked state of the cushion lock device 60, that is, the locked state of the lock member 70 and the locked member 71 is released in the seatable state.

Next, the operation of the cushion lock device 60 when the “cushion operation lever 64” shown in FIG. 1 is operated in the “seating possible state” will be described with reference to FIGS. 13A and 13B.
When the cushion lock device 60 is in the locked state as shown in FIG. 6, the lock member 70 is arranged at the engaging position engaged with the locked member 71 as shown in FIG. 13A.

Then, when the cushion operation lever 64 is operated in the seatable state, as shown in FIG. 13B, the second lock release lever 73 is pulled by the second cushion cable 66, and the second urging spring 78 Rotates from the lockable position to the unlockable position against the urging force.
As a result, the second lock release lever 73 (fitting groove 73b) pulls the lock member 70 (fitting protrusion 70b), and the lock member 70 rotates and moves from the engagement position to the engagement release position.
As the lock member 70 (fitting protrusion 70b) rotates, the position holding member 74 also rotates and moves from the holding position to the holding release position side against the urging force of the third urging spring 79. More specifically, the position holding member 74 rotates and moves to an intermediate position that does not hold the locked member 71.
Also by the above series of operations, the locked state of the cushion lock device 60, that is, the locked state of the lock member 70 and the locked member 71 is released in the seatable state.

Next, the operation of the cushion lock device 60 when the “ricla operation lever 54” shown in FIG. 1 is operated in the “tip-up state” will be described with reference to FIGS. 14A and 14B.
When the cushion lock device 60 is in the locked state in the chip-up state as shown in FIG. 9, the lock member 70 is arranged at the engaging position engaged with the locked member 71 as shown in FIG. 14A. More specifically, the engaging portion 70a of the lock member 70 and the engaged portion 71d provided on the locked member 71 are engaged with each other.

At this time, the first lock release lever 72 and the second lock release lever 73 are arranged at lockable positions.
More specifically, the first lock release lever 72 is urged by the first urging spring 77 and is arranged at a lockable position by abutting on the abutting projection 71b of the locked member 71. Further, the second lock release lever 73 is urged by the second urging spring 78 and is arranged at a lockable position by fitting into the fitting projection 70b of the lock member 70. In other words, the second lock release lever 73 (fitting groove 73b) holds the position of the lock member 70.
The position holding member 74 is arranged at a holding position for holding the engaging position of the locked member 71. More specifically, the position holding member 74 is urged by the third urging spring 79 and is arranged at the holding position by abutting on the auxiliary protrusion 71c of the locked member 71.

Then, when the ricla operation lever 54 is operated in the tip-up state, as shown in FIG. 14B, the first lock release lever 72 is pulled by the first cushion cable 65, and the first urging spring 77 Rotates from the lockable position to the unlockable position against the urging force.
At this time, since the first lock release lever 72 (pressing portion 72c) swings idle, the locked state of the lock member 70 and the locked member 71 cannot be released.
That is, when the ricla operation lever 54 is operated in the tip-up state, the locked state of the cushion lock device 60 is not released, and only the locked state of the reclining device 50 is released.

Next, the operation of the cushion lock device 60 when the “cushion operating lever 64” shown in FIG. 1 is operated in the “tip-up state” will be described with reference to FIGS. 15A and 15B.
When the cushion lock device 60 is in the locked state in the chip-up state as shown in FIG. 9, the lock member 70 is arranged at the engaging position engaged with the locked member 71 as shown in FIG. 15A.

Then, when the cushion operation lever 64 is operated in the seatable state, as shown in FIG. 15B, the second lock release lever 73 is pulled by the second cushion cable 66, and the second urging spring 78 Rotates from the lockable position to the unlockable position against the urging force.
As a result, the second lock release lever 73 (fitting groove 73b) pulls the lock member 70 (fitting protrusion 70b), and the lock member 70 rotates and moves from the engagement position to the engagement release position.
At this time, since the position holding member 74 is arranged at a position different from the rotation range of the fitting groove 73b, the position holding member 74 remains arranged at the holding position.
By the above series of operations, the locked state of the cushion lock device 60, that is, the locked state of the lock member 70 and the locked member 71 is released in the chip-up state.

<Second Embodiment of Vehicle Seat>
Next, a second embodiment of the vehicle seat will be described with reference to FIGS. 17 and 18.
The description of the contents overlapping with the vehicle seat S described above will be omitted.
The vehicle seat S2 according to the second embodiment is mainly different from the vehicle seat S in that it further includes an ottoman device 90.

The ottoman device 90 is a known device, and is attached to the front end portion of the seat cushion 2 as shown in FIG. 17, and is arranged between the operation lever 54 for the ricla and the operation lever 4c for the rail in the seat width direction. ing.
The ottoman device 90 has an ottoman rotation shaft 91 that extends in the seat width direction and is pivotally supported by the front end portion of the seat cushion 2, and leg supports that rotate about the ottoman rotation shaft 91 with respect to the seat cushion 2. It is mainly composed of a member 92 and a movable unit (not shown) for moving the leg support member 92.
The leg support member 92 can rotate between the storage position shown in FIG. 17 stored inside the seat cushion 2 and the deployment position shown in FIG. 18 deployed from the storage position to the front side of the seat cushion 2. It has become.
The leg support member 92 is composed of a support side end portion 92a supported by the front end portion of the seat cushion 2 and a deployment side end portion 92b formed so as to be wider in the seat width direction than the support side end portion 92a. It is mainly composed.

With the above configuration, the seat can be arranged, and a vehicle seat in which the ottoman device 90 is compactly arranged can be realized.

<Other Embodiments>
In the above embodiment, the storage floor is formed in front of the vehicle seat S, but the storage floor may be formed behind the vehicle seat S without particular limitation.
In that case, 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 within the claims, but without particular limitation, the chip-up state or the like of the present embodiment corresponds to the moving state. Of course, it is also good to do.

In the above embodiment, as shown in FIG. 2, the support base 30 is fixed to the vehicle body floor via the rail device 4, but is not particularly limited and is directly fixed to the vehicle body floor without the need for the rail device 4. It may be changed as appropriate.
Alternatively, a support bracket (support member) (not shown) fixed on the vehicle body floor may be used instead of the support base 30.

In the above embodiment, as shown in FIGS. 2 and 5, the lock member 70 is attached to the seat cushion 2 side and the locked member 71 is attached to the seat back 1 side, without particular limitation. The lock member 70 may be attached to the seat back 1 side, and the locked member 71 may be attached to the seat cushion 2 side.

In the above embodiment, as shown in FIG. 12A, the position holding member 74 holds the locked position of the locked member 71 in the seatable state, but the lock member 70 is instead locked without particular limitation. It may be configured to hold the position. In addition, the position holding member 74 may be configured to hold the lock positions of both the lock member 70 and the locked member 71.

In the above embodiment, as shown in FIG. 12A, the position holding member 74 (contact portion 74a) is configured to contact the locked member 71 (contact projection 71b), and the contact portion 74a is hit. A known coating agent may be applied to the contact surface, or a rubber member may be attached separately.
In that case, of the position holding member 74, the contact surface of the extruded portion 74b that contacts the lock member 70 (fitting protrusion 70b) and the contact surface of the portion that contacts the first lock release lever 72 (contact portion 72a). It is desirable to apply a coating agent on the surface as well.

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

In the present embodiment, the vehicle seat according to the present invention has been mainly described.
However, the above-described embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without deviating from the gist thereof, and it goes without saying that the present invention includes an equivalent thereof.

S, S2 Vehicle seat 1 Seat back 1a, 2a Cushion pad 1b, 2b Skin 2 Seat cushion 3 Headrest 4 Rail device 4a Lower rail 4b Upper rail 4c Rail operation lever 5 Armrest 6 Buckle 10 Back frame 11 Connecting bracket 20 Cushion frame 21 Side Frame 22 Front connecting pipe 23 Central connecting pipe 24 Pan frame 25 Mounting wire 25a Wire body 25b, 25c Wire mounting 30 Support base (support member)
31 Side base 32 1st base connecting 33 2nd base connecting 34 Reinforcing base 40 Base cover 41 Cover protruding 42 Cover accommodating recess 50 Reclining device 51 Reclining body 52 Back rotation shaft 53 Swirling spring 54 Operation lever for reclamation 55 Cushion cable 60 Cushion lock device 61 Lock body 62 Cushion rotation shaft 63 Swirling spring 64 Cushion operation lever 65 Cushion cable 66 Second cushion cable 70 Lock member 70a Engagement part 70b Fitting protrusion 71 Locked Members 71a, 71d Engagement part 71b Contact protrusion (contact part)
71c Auxiliary protrusion 72 1st lock release lever 72a Abutment part 72b Cable attachment part 72c Pressing part 73 2nd lock release lever 73a Cable attachment part 73b Fitting groove 74 Position holding member 74a Abutment part 74b Extruded part 75 Lock rotation shaft 76 Lever rotation shaft 77 1st urging spring 78 2nd urging spring 79 3rd urging spring (urging member)
80 Shaft connecting member 80a 1st shaft support 80b 2nd shaft support 80c Notch 90 Ottoman device 91 Ottoman rotation shaft 92 Leg support 92a Support side end 92b Deployment side end C Gap T1, T2 Thickness

Claims (8)

A seat body with a seat back and seat cushion,
A cushion lock device that rotatably connects the seat cushion to the seat back and locks the rotational operation of the seat cushion when the seat body is in a seatable state in which a seated person can be seated. And with
A vehicle seat that can be switched between the seatable state and the moving state in which the seat body is moved from the seatable state.
The cushion lock device is
A lock member attached to one side of the seat cushion and the seat back,
A locked member attached to the other side of the seat cushion and the seat back and engaging with the lock member to lock the rotational operation of the seat cushion.
Between the engaged portion attached to the lock member and the locked member at a peripheral position and provided on the locked member in the seatable state and the engaged portion provided on the locked member. A vehicle seat characterized by having a lock member and a position holding member that holds at least one position of the locked member in order to hold a state in which a gap is formed. The moving state is a storage state in which the seat body is stored and moved to a storage floor at a position lower than the vehicle body floor.
A reclining device that rotatably connects the seat back to the vehicle body floor and locks the rotational operation of the seat back when the seat back is in the seatable state.
A support base provided on the vehicle body floor and supporting the seat cushion from below is further provided.
The vehicle seat according to claim 1, wherein the lock member is attached to the seat cushion side, and the locked member is attached to the seat back side. The position holding member is formed with a contact portion for holding the position of the one by contacting the contacted portion provided on one of the lock member and the locked member.
The cushion lock device is further provided with an urging member that is attached to the position holding member and urges the position holding member in a direction in which the contact portion is brought into contact with the contacted portion. The vehicle seat according to claim 1 or 2. The position holding member is urged by the urging member and has a holding position where the abutting portion abuts on the abutted portion and a position where the abutting portion does not abut on the abutted portion. It is possible to move between the holding release position and
When the position holding member receives a load from the outside in the seatable state and moves from the holding position to the holding release position side against the urging force of the urging member, the engaging portion of the lock member. The vehicle seat according to claim 3, wherein the locked member is configured to engage with the engaged portion. A cushion frame that serves as the skeleton of the seat cushion is provided.
The lock member and the position holding member are arranged so as to be arranged in the seat width direction, and are connected to the side surface of the cushion frame in the seat width direction so as to be rotatable via a lock rotation shaft. The vehicle seat according to claim 3 or 4, characterized in that. The seat cushion is connected to the seat back so as to be rotatable via a cushion rotation shaft.
The lock rotation shaft and the cushion rotation shaft are arranged at different positions on the side surface of the cushion frame.
5. The cushion lock device further includes a shaft connecting member extending along a side surface of the cushion frame for connecting the lock rotating shaft and the cushion rotating shaft. Vehicle seats listed in. The shaft connecting member includes a first shaft support portion that pivotally supports the cushion rotation shaft, a second shaft support portion that pivotally supports the lock rotation shaft, and the first shaft rather than the second shaft support portion. The vehicle seat according to claim 6, further comprising a notch portion notched in a portion close to the support portion side. The locked member is connected to the side surface of the cushion frame in the seat width direction so as to be rotatable via the cushion rotation shaft.
The lock member and the locked member are arranged at the same position in the seat width direction.
The contact portion of the position holding member is
The vehicle seat according to claim 6 or 7, wherein the contact projection as the contacted portion projects from the side surface of the locked member toward the position holding member in the width of the seat.

Images