JP2009234369A - Vehicular stowable seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular stowable seat capable of improving the operability. <P>SOLUTION: The vehicular stowable seat S comprises a seatback 12 having a reclining mechanism 27 to be folded on a seat cushion 11, a link mechanism 30 connected to the reclining mechanism 27 and a leg locking means, and a strap 20 capable of operating the reclining mechanism 27 and the leg locking means via the link mechanism 30. The link mechanism 30 has a first link member 31 connected to the strap 20 and the reclining mechanism 27, and a fourth link member 70 attachable/detachable the first link member 31. During the stowing operation, even when the pulling operation of the strap 20 is stopped, the first link member 31 is locked by the fourth link member 70, the unlocked state of the reclining mechanism 27 is maintained, and the seatback 12 can be reliably folded and stowed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle storage seat, and more particularly to a vehicle storage seat with improved operability.

  2. Description of the Related Art Conventionally, a storage seat for a vehicle is known. For example, a front leg portion that can be engaged with and disengaged from a vehicle body floor side on a front side of a seat cushion constituting the vehicle seat, and a storage formed on a vehicle body floor on a rear end side A support portion that can be rotated in the front-rear direction on the front side of the recess (storage recess) is provided, and the vehicle seat is rotated rearward with the front leg unlocked and the seat back folded on the seat cushion. There is a technique of moving and storing in the storage recess.

  In other words, as disclosed in Patent Document 1, the conventional storage seat for a vehicle unlocks the front leg from the vehicle body floor side by operating the lever, and folds the seat back by pulling the strap. The vehicle seat can be stored in the storage recess by rotating the seat cushion rearward about a rotation shaft provided on the left and right sides of the rear end portion of the seat cushion.

JP 2006-082698 A

By the way, in the technique described in Patent Document 1, the strap is pulled to release the locking of the reclining mechanism, the seat back is folded on the seat cushion, and the vehicle seat is rotated in the retracting rotation direction. The storage operation is performed.
However, since the above technology is configured to release the locking of the reclining mechanism in conjunction with the strap pulling operation, if the strap pulling operation is stopped during rotation, the reclining is performed even when the seat back is open. The mechanism is locked again. That is, there is a problem that the data cannot be stored due to a difference in operation method.

In view of the above problems, an object of the present invention is to provide a vehicular storage seat with improved operability by allowing a storage operation of a vehicular storage seat to be reliably stored even if the operation method is different. It is in.
Another object of the present invention is to provide a storage seat for a vehicle that has improved operability while reducing cost and weight.

  According to the storage seat for a vehicle according to claim 1, the subject is a first seat support means for movably supporting one end portion side of the seat cushion in the front-rear direction, and the seat cushion is folded via a reclining means. A possible seat back, second seat support means provided on the other end side of the seat cushion, engagement / disengagement means capable of engaging / disengaging the second seat support means and the vehicle body floor side, A link mechanism connected to the reclining means, and an operating means connected to the reclining means and the engaging / disengaging means via the link mechanism, wherein the reclining means attaches the seat back to the seat cushion. A foldable reclining mechanism, and a detection mechanism for detecting a folded state of the seat back, the link mechanism comprising: A first link member connected to the operation means and the reclining mechanism, a second link member connected to the engagement / disengagement means, a third link member connected to the detection means, and the first link member. And a fourth link member capable of coming into contact with the second link member.

  With the above configuration, even when the pulling speed or pulling load of the operating means is changed during the storing operation, the fourth link member locks the movable first link member and maintains the unlocking state of the reclining mechanism. The seat back can be folded up. Therefore, the vehicle storage seat can be reliably stored regardless of the difference in the operation method of the operation means. In addition, the operation of the operation means can be performed to release the locking state of the reclining means and the engaging / disengaging means for the legs by one operation, and good operability can be ensured during the seat storing operation.

More specifically, as in claim 2, it is preferable that the fourth link member includes a second locking portion capable of engaging and disengaging the first link member.
According to a third aspect of the present invention, it is more preferable that the second link member includes a contact portion that can contact the second locking portion of the fourth link member.

  With the above configuration, the second locking portion of the fourth link member locks the movement of the first link member even when the pulling speed or the pulling load is changed during the storing operation, and the unlocking state of the reclining mechanism is maintained. Since the seat back can be folded while maintaining, the storage seat for the vehicle can be reliably stored regardless of the difference in the operation method of the operation means. Further, during the return operation, the locking by the third link member is released, so that the second link member moves, and the fourth link member is moved by pushing the second locking portion. Therefore, the reclining mechanism can be locked by stopping the pulling operation of the operating means.

According to a fourth aspect of the present invention, it is preferable that the fourth link member is constantly urged in a direction in contact with the first link member.
With the above configuration, since the fourth link member moves as the first link member moves, the first link member is moved when the first link member reaches a predetermined position by the operation of the operation means. The fourth link member can be moved to a position where it can be locked.

Specifically, as in claim 5, the third link member includes a first locking portion that can be locked to the second link member, and the seat back is folded by the detection mechanism. It is preferable that the state is detected and movable, and is configured to release the locking by the first locking portion.
With the above-described configuration, when the seat back is folded with respect to the seat cushion, the third link member can move and the locked state of the second link member locked to the first link member can be released. During the return operation, the seat back can be erected with respect to the seat cushion without releasing the locking of the engaging / disengaging means of the front leg, so that the operability is good when storing and returning the seat. Can be secured.

Preferably, the second link member is supported coaxially with the first link member, and the third link member is supported by the first link member.
With the above configuration, the number of parts can be reduced, and the cost and weight can be reduced.

According to the vehicular storage seat according to claim 1 of the present invention, the storage and return operations of the vehicular storage seat can be reliably performed regardless of the operation method of the operation means, and the storage / return operation of the seat can be performed. It is possible to provide a vehicular storage seat having excellent operability.
According to the storage seat for a vehicle according to the second and third aspects, the storage seat for the vehicle can be securely stored regardless of the operation method of the operation means during the storage operation of the seat. Can provide a storage seat for a vehicle having good operability that can lock the reclining mechanism by stopping the pulling operation of the operating means.
According to the storage seat for a vehicle according to the fourth aspect, since the fourth link member can be moved to the predetermined position when the first link member reaches the predetermined position, the storage seat for the vehicle is stored. A storage seat for a vehicle having reliable operation and good operability can be provided.
According to the storage seat for a vehicle according to claim 5, the seat back can be raised with respect to the seat cushion without releasing the locking of the engaging and disengaging means of the front leg portion at the time of the return operation. It is possible to provide a storage seat for a vehicle that has excellent operability.
According to the storage seat for a vehicle according to the sixth aspect, the number of parts can be reduced, and the cost and weight can be reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and various modifications can be made in accordance with the spirit of the present invention.

  FIGS. 1 to 11 show an embodiment of the present invention, FIG. 1 is a schematic side view of a rear part of a vehicle equipped with a vehicle storage seat, FIG. 2 is a front perspective view of the vehicle storage seat, and FIG. 3 is a vehicle storage. 4 is a schematic perspective view of the seat frame, FIG. 5 is an enlarged explanatory diagram of the link mechanism, FIG. 6 is a schematic explanatory diagram of the link mechanism with the seat back folded, and FIG. 7 is a front leg portion. FIG. 8 is an explanatory diagram showing an operation procedure during the storage operation of the vehicular storage seat, FIG. 9 is an operation explanatory view of the link mechanism during the storage operation of the vehicular storage seat, and FIG. FIG. 11 is an explanatory diagram showing an operation procedure at the time of the return operation of the storage seat for the vehicle, and FIG. 11 is an operation explanatory view of the link mechanism at the return operation of the storage seat for the vehicle.

First, the configuration of the sheet S according to the present embodiment will be described based on FIGS. 1 to 4.
The vehicle equipped with the seat S according to the present embodiment includes three rows of seats arranged in the front and rear, and is configured to be able to store the third row of seats. A storage recess 5 for storing the seat S is provided on the vehicle body floor 4 behind the seat S. Note that a floor carpet (not shown) is laid over the entire surface of the vehicle body floor 4.

The seat S has three seats on the left and right, and is composed of a two-seat right seat S1 positioned on the right side of the traveling direction of the vehicle and a one-seat left seat S2.
In the following description, the description of the right / left side indicating the direction is for the traveling direction of the vehicle.
Further, since the storage mechanism and the operation method of the right sheet S1 and the left sheet S2 are the same as each other, the right sheet S1 will be collectively described as the sheet S in the following description example.

  The seat S includes a seat cushion 11, a seat back 12, headrests 13 and 13, and a front leg portion 14. Further, as shown in FIG. 3, from the back side of the seat back 12, a strap 20 as an operation means for performing the storing operation of the seat S is extended outward from the back side of the seat S.

  The strap 20 is an operating means that is operated during the storing operation of the seat S, and a bendable wide belt having a length of about 1 m is provided outward from the strap outlet 20a so that the operation by the occupant is easy. It has been extended. Since the operation of storing and returning the sheet S can be performed by the pulling operation of the strap 20, the operation load can be reduced as compared with the operation by the lever. In a state where the seat S is not stored and returned, a part of the strap 20 is hooked on the back surface of the seat back 12 with a planar fastener. In addition, in this embodiment, although the strap 20 is comprised as a belt shape, you may form as a string shape or a tension lever shape. When a pull lever is used, the external appearance is not exposed unlike the strap 20, which is preferable.

  The seat frame F of the seat S shown in FIG. 4 includes a seat cushion frame 21 constituting the seat cushion 11, a seat back frame 22 constituting the seat back 12, and a front leg frame 24. The seat cushion frame 21 and the seat back frame 22 are connected via a reclining mechanism 27, and the seat cushion frame 21 and the vehicle body floor 4 side are connected via seat support portions 25, 25 as first seat support means. . Further, a pillar of a headrest frame (not shown) is disposed on the upper portion of the seat back frame 22 via a pillar support portion 23.

The seat cushion frame 21 constitutes the seat cushion 11 that is covered by a cushion pad, a skin, etc. (not shown) and supports the occupant from below. The seat cushion frame 21 has a front leg frame 24 attached to the front side so as to be rotatable (movable). Further, back frame support portions 21 a and 21 a connected to the seat back frame 22 are disposed at the rear end portion of the seat cushion frame 21.
The left and right seat support portions 25, 25 support the rear end portion side of the seat cushion frame 21 so as to be pivotable in the front-rear direction. A spiral spring 48 is attached to the seat support portion 25 on one side, and the seat cushion 11. Is constantly biased in the direction of forward rotation (movable).

  The seat back frame 22 constitutes a seat back 12 that is covered by a cushion pad (not shown) and supports the back of the occupant from the rear, and is a substantially rectangular frame in this embodiment. More specifically, the seat back 12 is composed of side frames 22a and 22a and a center frame 22b. The side frames 22a, 22a are a pair of left and right, and are formed to extend in the vertical direction while being separated in the horizontal direction of the seat back frame 22. The center frame 22b is composed of a substantially rectangular frame sandwiched between the side frames 22a and 22a.

The lower end portions of the side frames 22a and 22a are connected to the back frame support portions 21a and 21a via a reclining mechanism 27 serving as a reclining means.
A substantially plate-like back plate 28 is disposed inside the central frame 22b, which is a frame body, along a surface that supports the back of the occupant, and a link mechanism 30 described later is provided on the back plate 28. It has been. A strap outlet 20a is provided above the central frame 22b.

  The front leg frame 24 is covered with a cover material (not shown) to form the front leg 14 as the second seat support means, and supports the front side of the seat cushion frame 21 to the vehicle body floor 4 side. Connected. The front leg frame 24 is supported on the front side of the seat cushion frame 21 so as to be pivotable in the front-rear direction, and a leg striker 44 provided on the vehicle body floor 4 side is provided below the front leg frame 24. A leg locking mechanism is provided as an engaging / disengaging means that is detachably connected.

Next, the structure of the link mechanism 30 is demonstrated based on FIG. 5 thru | or FIG.
The link mechanism 30 is connected to the strap 20 as an operation means, and functions to appropriately release the locking of the reclining mechanism 27 and the locking of the leg locking mechanism in conjunction with the operation of the strap 20 and the state of the seat S. And is formed on the back plate 28 as described above.

The link mechanism 30 includes a first link member 31, a second link member 32, a third link member 33, and a fourth link member 70, and these link members (31, 32). , 33, and 70) are rotatably mounted. Among these, a connecting member is connected to the first link member 31, the second link member 32, and the third link member 33.
As connecting members, a reclining release wire 40 connected to the reclining mechanism 27, a leg release wire 41 connected to the locking claws 43, 43 of the front leg portion 14, and a state in which the seat back 12 is folded are detected. There is a cancel wire 42 and a strap 20.

  The first link member 31 is a substantially inverted triangular flat member in the left-right direction, and the strap 20 is connected to the engaging portion 34a disposed on one end side via the strap connecting member 34, The reclining release wire 40 is locked to the locking portion 40c formed on the other end side. The first link member 31 is rotatably supported on the back plate 28 by a shaft portion 31a provided at the center thereof.

In addition, an arc-shaped long hole 31b is formed between the shaft portion 31a and the locking portion 34a of the first link member 31 so as to draw a part of a concentric circle of a shaft portion 33a described later.
The other end side of the strap 20 connected to the first link member 31 via the strap connecting member 34 is seat backed from a strap outlet 20a provided on the back surface of the seat back 12 so as to be easily operated by the occupant. 12 are extended outward.

The locking portion 34a of the strap connecting member 34 provided on the first link member 31 pivotally supports the strap connecting member 34 on the first link member 31 so that the strap connecting member 34 can rotate, and the other end side is the back plate 28. Is inserted through the guide hole portion 28a. Since the guide hole portion 28a is formed in an arc shape that draws a part of the concentric circle of the shaft portion 31a, the locking portion 34a moves in the guide hole portion 28a as the first link member 31 rotates. can do. The upper and lower limits of the rotation amount of the first link member 31 can be set by adjusting the length of the guide hole portion 28a.
The second link member 32 and the fourth link member 70 are also provided with a convex stopper (not shown) on the back plate 28 or the first link member 31, and the upper and lower limits of the respective rotation amounts are arbitrary. Is set to

The second link member 32 is a substantially rectangular member, and is supported at the center portion so as to be rotatable coaxially with the first link member 31 by a shaft portion 31a. By supporting the second link member 32 coaxially with the first link member 31, cost and weight can be reduced.
On the end side of the second link member 32 that is close to the locking portion 34a, a locking recess 32b that abuts on a first locking portion 35 described later is formed. In addition, an abutting portion 32 c that is formed in a substantially semicircular shape is formed on the upper side of the end of the second link member 32 opposite to the locking recess 32 b.
Further, a locking portion 41c to which the leg release wire 41 is locked is formed between the shaft portion 31a and the locking recess 32b.

  The third link member 33 is a substantially rectangular member, and is disposed between the first link member 31 and the back plate 28, and the central portion thereof is moved to the first link member 31 side by the shaft portion 33 a. It is rotatably supported. A cancel wire 42 is locked to the lower end side of the third link member 33 via a locking portion 42c.

A first locking portion 35 is formed in a columnar shape on the upper end portion side of the third link member 33. The first locking portion 35 is inserted into an arc-shaped long hole 31 b formed in the first link member 31 and comes into contact with the locking recess 32 b of the second link member 32, so that the second The link member 32 is locked so as to rotate together with the first link member 31.
Here, the first locking portion 35 has an outer diameter slightly smaller than the width of the long hole 31b, while the long hole 31b is one of the concentric circles of the shaft portion 33a as described above. Since the third link member 33 is rotated, the first locking portion 35 is configured to move along the long hole 31b. The upper and lower limits of the rotation amount of the third link member 33 are adjusted by the length of the elongated hole 31b.

  The third link member 33 is attached with a biasing spring (not shown) that constantly biases in the direction opposite to the direction pulled by the cancel wire 42. In this case, one end of the biasing spring is locked to the lower end side of the third link member 33, and the opposite end is locked to the lower side of the strap locking portion of the first link member 31. By attaching an urging spring to the third link member 33, the operation of the third link member 33 can be made more reliable.

  Similarly, with respect to the first link member 31 and the second link member 32, an urging spring (not shown) that urges the first link member 31 and the second link member 32 in a direction to return to the original position (see FIG. 9A) is attached. It is preferable to use a configuration that assists the rotation of the link members 31 and 32. In this case, the first link member 31 and the second link member 32 are each attached with an urging spring having both ends fixed between the back plate 28 side. In the case of the second link member 32, an urging spring may be attached to the first link member 31. By attaching a biasing spring to the first link member 31 and the second link member 32 as well, the operation can be made more reliable.

The fourth link member 70 is a substantially triangular member, and is rotatably supported on the back plate 28 on the upper side of the first link member 31 by a shaft portion 70a. The fourth link member 70 has a second locking portion 71 formed on one end side, and a biasing spring 47 in a direction in which the second locking portion 71 is in contact with the first link member 31. Is always energized. The biasing spring 47 is set to a biasing force that does not affect the operation of the first link member 31.
The second locking portion 71 is formed in a columnar shape having a substantially semicircular cross section, and a flat surface portion 71a formed in a part of the second locking portion 71 is disposed in a direction opposite to the shaft portion 70a. Has been. Since the fourth link member 70 is biased by the biasing spring 47, the second locking portion 71 is in the state where the second link member 32 is locked by the first locking portion 35. It is in contact with the upper edge of the first link member 31.

  The urging spring 47 in this embodiment is locked at both ends to the fourth link member 70 and the back plate 28 side, but the fourth link member 70 and the second link member 32 are connected to each other. It is good also as a structure by which both ends are latched. Specifically, both end portions of the biasing spring 47 are between the second locking portion 71 and the lower locking portion 32d (see FIG. 5) of the contact portion 32c of the second link member 32. It is preferable that the structure is locked. In this case, the deflection amount of the biasing spring with respect to the rotation amount of the fourth link member 70 can be made relatively small. For this reason, the biasing spring 47 can be made smaller and the link mechanism 30 can be reduced in weight and cost.

  In the present embodiment, the second locking portion 71 is formed in a columnar shape having a substantially semicircular cross section, but is formed in a columnar shape, a prismatic shape, or a convex shape by bending a part of the fourth link member 70. May be. If the 2nd latching | locking part 71 is made into a column shape, it can produce at low cost, and if it is made into a prism shape, more reliable operation | movement can be anticipated. Further, if a part of the fourth link member 70 is formed by bending, the number of parts can be reduced and the cost can be reduced.

Here, the other end part side of the connecting member locked to the link mechanism 30 will be described with reference to FIGS. 6 and 7.
First, the other end portion side of the reclining release wire 40 locked to the first link member 31 will be described below.
As shown in FIG. 6, the other end portion side of the reclining release wire 40 locked to the locking portion 40 c of the first link member 31 is guided by the reclining release cable 40 a to engage the reclining of the seat back 12. It is connected to a reclining mechanism 27 that performs the detachment operation.
When the reclining release wire 40 is pulled toward the link mechanism 30 by the operation of the link mechanism 30, the reclining mechanism 27 releases the locked state of the reclining mechanism 27 and enables the reclining adjustment of the seat back 12.

As shown in FIG. 7, the other end side of the leg releasing wire 41 locked to the locking part 41c of the second link member 32 is guided by the leg releasing cable 41a, and the leg locking mechanism It is connected to. The leg locking mechanism is formed at two locations below the front leg 14, but since it has the same configuration, one of them will be described.
When the leg release wire 41 is pulled toward the link mechanism 30 by the operation of the link mechanism 30, the leg claw 43 connected to the leg release wire 41 rotates around the rotation shaft 43a. Thus, the engagement with the leg striker 44 on the vehicle body floor 4 side is released, and the seat cushion 11 becomes rotatable in the front-rear direction.
The locking claw 43 is always biased by a biasing spring 45 in a direction in which the locking state with the leg striker 44 is maintained.

The other end side of the cancel wire 42 locked to the third link member 33 will be described below.
As shown in FIG. 6, the other end side of the cancel wire 42 locked to the locking portion 42 c of the third link member 33 is guided by the cancel cable 42 a and formed in the reclining mechanism 27. 49. The locking rib 49 is attached so as to rotate together with the side frame 22 a in the reclining mechanism 27. In other words, in the present embodiment, the other end portion of the cancel wire 42 is locked to the locking rib 49, and in a state where the seat back 12 is folded, the locking rib 49 is connected to the third wire via the cancel wire 42. It is comprised as a detection mechanism which pulls the latching | locking part 42c formed in the link member 33 of this.
The reclining means is configured to include the detection mechanism and the reclining mechanism 27.

  In the present embodiment, a locking rib 49 that is locked to the other end side of the cancellation wire 42 is formed in the reclining mechanism 27, but the cancellation wire is in a state where the seat back 12 is folded with respect to the seat cushion 11. If it is the structure which operates 42, another latching site | part may be sufficient. Further, it may be formed at a site away from the reclining mechanism 27.

For example, a substantially rectangular detection member is pivotally attached to the side frame 22 on the seat back 12 side, while a protrusion is provided on the seat cushion 11 side, and one end side of the detection member is in a folded state of the seat back 12. It arrange | positions so that it may contact | abut to protrusion and may rotate. When the cancel wire 42 is locked to the other end side of the detection member, the cancel wire 42 can be pulled to the reclining mechanism 27 side.
By configuring in this way, the same function as the detection mechanism shown in FIG. 6 can be exhibited.

  An end member 40b, which is an end of the reclining release cable 40a for guiding the reclining release wire 40, on the link mechanism 30 side is fixed on the back plate 28 by a bracket (not shown). Similarly, the end member 41b on the link mechanism side for guiding the leg release wire 41 is also fixed on the back plate 28 by a bracket (not shown). Further, the end member 42 b on the link mechanism 30 side for guiding the cancel wire 42 is fixed to the first link member 31 in the same manner.

Next, the relationship between the operation of the link mechanism 30 and the other end side of the connecting member will be described.
In a state where the third link member 33 is not rotated, the second link member 32 rotates together with the first link member 31, so that the reclining release wire 40 and the leg release wire 41 are pulled by the pulling operation of the strap 20. Can be pulled, and the locking of the reclining mechanism 27 and the leg locking mechanism can be released.

  The fourth link member 70 is biased by a biasing spring 47. Therefore, the second locking portion 71 provided on the fourth link member 70 is always in contact with the upper edge portion of the first link member 31. The fourth link member 70 rotates with the operation of the first link member 31. When the first link member 31 is rotated to a predetermined rotation angle, the flat portion 71 a of the second locking portion 71 is in surface contact with the upper edge portion of the first link member 31. . The rotation of the fourth link member 70 is locked by the surface contact of the flat portion 71a.

Since the flat portion 71a stops moving in contact with the upper edge portion of the first link member 31, the first link member 31 cannot rotate in the return direction even if the pulling operation of the strap 20 is stopped. It is locked at the predetermined rotation angle. The predetermined rotation angle is set to an angle at which the reclining mechanism 27 can be unlocked.
That is, the fourth link member 70 is held in a state in which the reclining mechanism 27 is unlocked even if the pulling of the strap 20 is stopped during the storing operation. There is no problem that the reclining mechanism 27 is locked and cannot be stored with the seat back 12 open.

When the seat back 12 is folded, the third link member 33 is rotated, and the first locking portion 35 fixed to the third link member 33 moves along the long hole 31b. The rotation of the third link member 33 stops the contact with the first locking portion 35 at the locking recess 32b, so that the locking between the first link member 31 and the second link member 32 is released. .
At this time, the leg release wire 41 is pulled by the biasing spring 45 provided on the other end side of the leg release wire 41 locked to the second link member 32, so that the second link member 32 is Rotate.

By the rotation of the second link member 32, the contact portion 32 c attached to the upper side of the second link member 32 pushes the second locking portion 71 and rotates the fourth link member 70. Thus, the locked state of the first link member 31 by the fourth link member 70 is released.
That is, when the seat back 12 is folded, the leg portion locking mechanism is locked and the reclining mechanism 27 is locked again.

The upper link portion of the second link member 32 may be brought into direct contact with the second locking portion 71 of the fourth link member 70 to rotate the fourth link member 70. . In this case, weight reduction and cost reduction of parts can be achieved.
In addition, the degree of freedom of arrangement of the second link member 32 is improved by forming the contact portion 32c formed on the second link member 32 in a convex shape upward. Moreover, the 2nd latching | locking part 71 can be pushed reliably.

Next, the storing and returning operation of the sheet S and the operation of the link mechanism 30 according to this embodiment will be described with reference to FIGS.
First, the storing operation of the sheet S will be described with reference to FIG.
FIG. 8A shows a state in which the strap 20 is pulled rearward with the seat installed. When the strap 20 is pulled backward by the occupant, the locking of the reclining mechanism 27 is released.

At this time, the seat back 12 to which the strap 20 is attached is urged forward by a spiral spring (not shown) attached to the reclining mechanism 27. When the strap 20 is pulled against the urging direction, the locking claws 43 and 43 of the front leg 14 are unlocked at a stress lower than the stress of folding the seat back 12 backward.
FIG. 8B shows a state where the locking claws 43, 43 of the front leg portion 14 are unlocked. That is, the locking claws 43 and 43 of the front leg portion 14 are unlocked, and the seat S can be rotated rearward.

FIGS. 8C and 8D show a state in which the sheet S has been rotated backward. The center of gravity of the sheet S exceeds the midpoint of rotation, and thereafter, the sheet S is rotated rearward by its own weight to reach the retracted state.
At this time, even if the pulling speed and the pulling load of the strap 20 are changed or the pulling operation is stopped, the unlocking state of the reclining mechanism 27 is maintained and the spiral spring (not shown) attached to the reclining mechanism 27 is maintained. The seat back 12 is folded by the urging force. Further, when the seat back 12 is folded, the reclining mechanism 27 is locked again. Since the seat back 12 does not open, it can be stored smoothly.
Further, the rearward rotation speed of the sheet S is decelerated by the spiral spring 48 attached to the sheet support portion 25, so that the impact generated during the storage in the storage recess 5 is mitigated.
The front leg 14 is folded toward the seat cushion 11 by its own weight as the seat S rotates.

  FIG. 8E shows the storage state of the sheet S. In this state, the opening of the storage recess 5 becomes a flat surface integrated with the back surface of the seat cushion 11, and a wide cargo space is secured. Note that a locking mechanism that detachably locks the back surface of the seat back 12 and the bottom of the storage recess 5 may be provided in order to suppress the flutter of the stored seat S when the vehicle is traveling.

The operation of the link mechanism 30 during the above-described sheet S storing operation will be described with reference to FIG.
FIG. 9A shows a state of the link mechanism 30 when the seat S is installed, and is a stage before the strap 20 is operated by the occupant. The state of the link mechanism 30 is assumed to be the original position.

FIG. 9B shows a state of the link mechanism 30 when the reclining mechanism 27 is unlocked (FIG. 8A), and is a stage where the strap 20 is slightly pulled backward.
Since the first link member 31 rotates in the direction pulled by the operation of the strap 20, the reclining release wire 40 is pulled with the rotation, and the locking of the reclining mechanism 27 is released. At this time, since the seat back 12 is standing with respect to the seat cushion 11, the cancel wire 42 is not pulled, and the second link member 32 rotates together with the first link member 31 to form the leg portion. The release wire 41 is also pulled. However, the locking claws 43, 43 that connect the front leg 14 and the vehicle body floor 4 side are set so as not to be released by the pulling amount in this state, and the locking of the legs is maintained. .

  FIG. 9C shows the state of the link mechanism 30 when the locking claws 43 and 43 of the reclining mechanism 27 and the front leg 14 are released (FIG. 8B), and the strap 20 is further pulled. It has been. By pulling the strap 20 more strongly than in the state shown in FIG. 9B, the first link member 31 also rotates greatly. With this rotation, the reclining release wire 40 and the leg release wire 41 are further pulled. At this time, the locking of the leg is released.

In the state of the link mechanism 30 shown in FIG. 9C (FIG. 8C), the flat portion 71 a of the second locking portion 71 can come into surface contact with the upper edge portion of the first link member 31. It is pivoting to the correct position. At this time, if the pulling speed or pulling load of the strap 20 is changed or the pulling operation is stopped, the first link member 31 comes into contact with the flat portion 71a. By contacting the flat surface portion 71a, the rotation of the first link member 31 in the return direction is locked, so that the locked state of the reclining mechanism 27 is maintained.
In addition, the center of gravity of the sheet S exceeds the middle point of rotation, and thereafter, the sheet S is rotated rearward by its own weight to reach the retracted state. The seat back 12 is folded by the urging force of a spiral spring (not shown) attached to the reclining mechanism 27.

FIG. 9D shows the state of the link mechanism 30 in the final stage of the storage rotation (FIG. 8D). When the seat back 12 is folded, the third link member 33 is rotated, and the locking of the first link member 31 and the second link member 32 is released. In this state, since the second link member 32 rotates with respect to the first link member 31, the leg release wire 41 is not pulled and the leg locking mechanism is locked. However, since it is already at a position away from the striker 44, the storing operation of the sheet S is not affected.
Further, when the second link member 32 rotates and the second locking portion 71 is pressed by the contact portion 32c, the fourth link member 70 can lock the first link member 31. Evacuated from. Thus, the 1st link member 31 returns to the state which can be rotated.

  In the retracted state of the seat S (FIG. 8E), since the seat back 12 is folded with respect to the seat cushion 11, the cancel wire 42 is pulled and the third link member 33 is held in a rotated state. The At this time, the first link member 31 is held at the position before the rotation because the strap 20 is not pulled in the retracted state of the sheet S.

Next, the returning operation of the sheet S will be described with reference to FIG.
FIG. 10A shows a state in which the sheet S is stored. By pulling up a grip (not shown) provided on the back side of the seat cushion 11, the seat S can be rotated in the return rotation direction.

FIG. 10B shows a state when the sheet S is returned and rotated. The operation load is reduced because the spiral spring 48 attached to the seat support 25 is urged in the return rotation direction.
As the seat S rotates forward, the front leg 14 rotates by its own weight and is deployed downward.
FIG. 10C shows a state where the locking claws 43, 43 of the front leg portion 14 of the seat S are locked to the vehicle body floor 4 side. The locking claws 43 are locked to the leg striker 44 on the vehicle body floor 4 side by the pressure of the seat S due to its own weight.

FIG. 10D shows an operation of pulling the strap 20 rearward from the state in which the locking claws 43 and 43 of the front leg 14 of the seat S are locked to the leg striker 44 on the vehicle body floor 4 side.
FIG. 10E shows a state where the return operation of the sheet S has been completed.
That is, the occupant can return the seat S only by pulling the strap 20 rearward after grasping the grip of the seat cushion 11 in a state in which the seat back 12 is folded and retracted and rotating it forward. .

The operation of the link mechanism 30 at the time of the returning operation of the sheet S will be described with reference to FIG.
FIG. 11A shows a stage where the seat S is rotated from the retracted state of the seat S (FIG. 10A) and the locking claws 43, 43 are locked to the vehicle body floor 4 side (FIG. 10C). This is the state of the link mechanism 30 up to)). Before the strap 20 is operated by the occupant, since the seat back 12 is folded, the cancel wire 42 is pulled and the third link member 33 is rotated.

FIG. 11B is a stage where the strap 20 is slightly pulled backward to raise the seat back 12 (FIG. 10D). The seat back 12 can be erected by operating the strap 20. Since the cancel wire 41 returns to the state where it is not pulled by the standing of the seat back 12, the third link member 33 is returned to a position where the second link member 32 can be locked. However, even if the third link member 33 rotates, the strap 20 is pulled, so that the second link member 32 is not locked to the third link member 33.
Further, in this state, even if the operation operation of the strap 20 is performed, the leg release wire 41 is not pulled, so that the locking state of the locking claws 43 and 43 is maintained.

Even if the first link member 31 is rotated to the locking position by the pulling operation of the strap 20 at this time, the fourth link member 70 is pressed in the rotation direction by the second link member 32. The first link member 31 cannot be locked.
When the pulling operation of the strap 20 is stopped after the seat back 12 is erected, the second link member 32 also returns to the original position. Therefore, the second link member 32 is moved to the first link by the third link member 33. Each link member of the link mechanism 30 is locked to the member 31 and returns to the original position (see FIG. 9A).

As described above, according to the seat S according to the present invention, in the storing operation, the storing rotation operation and the engaging / disengaging operation of the reclining mechanism 27 can be performed only by the pulling operation of the strap 20. Good operability can be obtained during the storing operation. In the storing operation, since the reclining mechanism 27 is locked in a state where the seat back 12 is folded on the seat cushion 11, there is no possibility that the seat back 12 is opened again during the rotation of the storage, and the operability is improved.
In the return operation, the seat S can be reliably returned by pulling the strap 20 after grasping and rotating the grip provided on the back side of the seat cushion 11, and the operation method is as follows. Easy to understand.

In the present embodiment, the vehicular storage seat S in which the operation means during storage is integrated with the strap 20 has been described. However, the present invention can be applied to a seat having a strap and a lever as the operation means during storage.
In the present embodiment, the third row of seats divided into the left and right sides of the automobile has been described as a specific example. However, the present invention is not limited to this, and a long bench-type seat, a passenger seat, and other rear seats are integrally formed. Of course, a similar configuration can be applied.

It is a side surface schematic diagram of the vehicle rear part equipped with the storage seat for vehicles concerning one embodiment of the present invention. It is a front perspective view of the storage seat for vehicles concerning one embodiment of the present invention. It is a back perspective view of the storage seat for vehicles concerning one embodiment of the present invention. 1 is a schematic perspective view of a seat frame according to an embodiment of the present invention. It is expansion explanatory drawing of the link mechanism which concerns on one Embodiment of this invention. It is a schematic explanatory drawing of the link mechanism of the state by which the seat back which concerns on one Embodiment of this invention was folded. It is a schematic explanatory drawing of the latching | locking part of the front leg part which concerns on one Embodiment of this invention. It is explanatory drawing which shows the operation procedure at the time of storing operation of the storage seat for vehicles which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing of the link mechanism at the time of storing operation of the storage seat for vehicles which concerns on one Embodiment of this invention. It is explanatory drawing which shows the operation procedure at the time of the return operation of the storage seat for vehicles which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing of the link mechanism at the time of return operation of the storage seat for vehicles which concerns on one Embodiment of this invention.

Explanation of symbols

S Seat F Seat frame S1 Right seat S2 Left seat 4 Body floor 5 Storage recess 11 Seat cushion 12 Seat back 13 Headrest 14 Front leg 20 Strap 20a Strap outlet 21 Seat cushion frame 21a Back frame support 22 Seat back frame 22a Side Frame 22b Center frame 23 Pillar support 24 Front leg frame 25 Seat support 27 Reclining mechanism 28 Back plate 28a Guide hole 30 Link mechanism 31 First link members 31a, 33a, 70a Shaft 31b Long hole 32 Second Link member 32b Locking recess 32c Abutting part 33 Third link member 34 Strap connecting members 32d, 34a, 40c, 41c, 42c Locking part 35 First locking part 40 Reclining release wire 0a Reclining release cable 40b, 41b, 42b End member 41 Leg release wire 41a Leg release cable 42 Cancel wire 42a Cancel cable 43 Locking claw 43a Rotating shaft 44 Leg striker 45, 47 Energizing spring 48 Spiral spring 49 Engagement Stop rib 70 Fourth link member 71 Second locking portion 71a Plane portion

Claims (6)

First seat support means for movably supporting one end of the seat cushion in the front-rear direction;
A seat back that can be folded to the seat cushion via reclining means;
Second seat support means provided on the other end side of the seat cushion;
Engaging / disengaging means capable of engaging / disengaging the second seat support means and the vehicle body floor side;
A link mechanism coupled to the reclining means;
Operating means connected to the reclining means and the engagement / disengagement means via the link mechanism;
The reclining means includes a reclining mechanism that can fold the seat back to the seat cushion, and a detection mechanism that detects a state in which the seat back is folded,
The link mechanism includes a first link member connected to the operation means and the reclining mechanism, a second link member connected to the engagement / disengagement means, and a third link member connected to the detection means. And a fourth link member capable of coming into contact with the first link member and the second link member.   The storage seat for a vehicle according to claim 1, wherein the fourth link member includes a second locking portion capable of engaging and disengaging the first link member.   The said 2nd link member is provided with the contact part which can contact | abut to the said 2nd latching | locking part of the said 4th link member, The one of Claim 1 or 2 characterized by the above-mentioned. Storage seat for vehicles.   4. The vehicular storage seat according to claim 1, wherein the fourth link member is constantly urged in a direction in which the fourth link member abuts on the first link member. 5.   The third link member includes a first locking portion capable of locking the second link member, and is movable by detecting a state in which the seat back is folded by the detection mechanism. The storage seat for a vehicle according to any one of claims 1 to 4.   6. The second link member is supported coaxially with the first link member, and the third link member is supported by the first link member. The vehicle storage seat according to any one of the preceding claims.

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