JP2009196420A - Storable vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage vehicular seat in which storage/return operations are improved. <P>SOLUTION: The storable vehicular seat S comprises: an assist mechanism 300 for rotatably supporting the front side of a seat cushion 11; a seat back 12 capable of being folded in the seat cushion 11 via a reclining means; a reclining operation lever 16 capable of operating the reclining means; a link mechanism 50 in conjunction with a folding angle of the seat back 12; a seat slide mechanism for longitudinally slidably supporting the seat cushion 11; a slide lock mechanism capable of engaging/disengaging slide operation of the seat slide mechanism; a striker lock mechanism 350 capable of engaging/disengaging the rear side of the seat cushion 11 with/from a vehicle body floor 4 side; and assist springs 341, 342, 342 capable of flipping up the seat cushion 11 at least in a storage rotation direction. The link mechanism 50 is coupled with a slide lock mechanism. a seat slide mechanism, and a slide lock mechanism. <P>COPYRIGHT: (C)2009,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 vehicle storage seat is known. For example, a rear end portion of a seat cushion constituting a vehicle seat is supported on a front side of a storage recess (storage recess) on a vehicle body floor so as to be rotatable in the front-rear direction. For example, there is a technique in which the vehicle seat is rotated rearward and stored in a storage recess while the seat back is folded on a cushion.

  In other words, as shown in Patent Document 1, a rotation shaft provided at the left and right side edges of the front portion of the storage recess and a bracket provided at the left and right portions of the rear end portion of the seat cushion are provided. By arranging these brackets so as to be pivotable in the front-rear direction with respect to the respective pivot shafts, the seat cushion can be stored in the storage recess by supporting the rear end portion of the seat cushion so as to be pivotable in the front-rear direction. It is configured as follows. Further, the urging spring provided on the rotating shaft constantly urges the seat in the rotating direction to return the seat, thereby reducing the return operation load.

JP 2006-082698 A

  In the technique disclosed in Patent Document 1, although the operation load in the seat returning direction is reduced by the biasing spring provided on the rotating shaft, the operation by the occupant is performed in the seat retracting / restoring operation. In particular, in the seat storage operation, the seat slides to the storage position, unlocks the seat back and folds the seat back, releases the leg lock, rotates the storage, and is operated by the occupant at each stage. Since it is necessary, it is inconvenient and difficult to operate.

  In view of the above problems, an object of the present invention is to provide a vehicular storage seat that is improved in usability by reducing the number of operations during storage.

  According to the storage seat for a vehicle according to claim 1, the subject is a seat support means for rotatably supporting one end portion side of the seat cushion, and a seat back that can be folded on the seat cushion via a reclining means. , An operating means capable of operating the reclining means, a link means interlocking with a folding angle of the seat back, a seat slide means for slidably supporting the seat cushion in the front-rear direction, and a front-rear direction of the seat slide means First engagement / disengagement means capable of engaging / disengaging the slide, second engagement / disengagement means capable of engaging / disengaging the opposite end side of the seat cushion and the vehicle body floor, and at least the retracting rotation direction of the seat cushion Biasing means that can be flipped up, and the link means includes the first engagement / disengagement means, the seat slide means, It is solved by being connected to, and the second engaging and disengaging means.

  Thus, the link means interlocking with the folding angle of the seat back having the operating means capable of operating the reclining means, the first engaging / disengaging means capable of engaging / disengaging the slide in the front-rear direction of the seat sliding means, and the seat cushion Is coupled to a seat slide means for slidably supporting the seat cushion in the front-rear direction and a second engagement / disengagement means capable of engaging / disengaging the opposite end side of the seat cushion and the vehicle body floor side, and at least retracts the seat cushion. And a biasing means that can be flipped up in the direction. By operating the operating means for operating the reclining means, folding the seat back, releasing the slide lock, sliding the slide to the storage position of the seat cushion, sliding Re-locking, releasing the seat lock, and raising the seat cushion in the retracting rotation direction It can be dynamic.

  Specifically, as in claim 2, the link means includes a seat back link member that rotates in conjunction with a folding angle of the seat back, and a pivotally supported pivot, and the first link member. And a second link member that is coupled to the seat slide means and rotates in conjunction with the seat back link member, and is pivotally supported so that the seat back link member and the first engagement / disengagement means are connected to each other. The fourth link member that is connected and rotates in conjunction with the seat back link member, is pivotally supported, is connected to the seat back link member and the second engagement / disengagement means, and the seat A sixth link member that rotates in conjunction with a back link member, wherein the seat back link member has a folding angle of the seat back within a first predetermined angle range. A second interlocking member that stops, and a first interlocking member that locks the fourth link member in conjunction with the folding angle of the seat back within a second predetermined angle range of the folding angle of the seat back; It is preferable that the seatback has a third interlocking member that locks the sixth link member at a third predetermined angle.

  Thus, the link means is pivotally supported by the seat back link member that rotates in conjunction with the folding angle of the seat back, and is pivotally supported and connected to the first link member and the seat slide means. A second link member that is rotated in conjunction with the member, is pivotally supported, is connected to the seat back link member and the first engaging / disengaging means, and is rotated in conjunction with the seat back link member. A fourth link member that is pivotally supported, connected to the seat back link member and the second engaging / disengaging means, and rotated in conjunction with the seat back link member; The seat back link member includes: a second interlocking member that locks the second link member within a first predetermined angle range of the seat back folding angle; and a folding angle of the seat back of the second predetermined angle range. In A first interlocking member that locks the fourth link member in conjunction with the folding angle of the toeback, and a third interlocking member that rotates the sixth link member with the folding angle of the seatback being a third predetermined angle. The operation of releasing the slide lock, sliding the seat cushion to the storage position, re-sliding the slide, and releasing the seat lock is interlocked at a predetermined folding angle of the seat back. be able to.

According to a third aspect of the present invention, the seat back link member includes a first link member including the first interlocking member and the second interlocking member, and a third link member including the third interlocking member. 7 link members are preferable.
Thus, the 1st seat back link member has the 1st link member provided with the 1st interlocking member and the 2nd interlocking member, and the 7th link member provided with the 3rd interlocking member. Accordingly, the first predetermined angle, the second predetermined angle, and the third predetermined angle can be set to mutually independent values.

According to the storage seat for a vehicle according to claim 1, the seat back is folded, the slide lock is released, the seat cushion is slid to the retracted position, and the slide is moved by one operation of operating the operating means for operating the reclining means. Each operation of locking, releasing the seat lock, and raising the seat cushion in the retracting rotation direction can be linked in order according to the folding angle of the seat back, reducing the number of operations when storing the seat. Thus, it is possible to provide a storage seat for a vehicle with improved usability. Moreover, since the seat cushion is flipped up in the retracting rotation direction, the rotating direction can be visually recognized, the operation method is easy to understand, and the vehicular storage seat with improved usability can be provided.
According to the storage seat for a vehicle according to claim 2, the operations of releasing the slide lock, sliding the seat cushion to the storage position, re-sliding the slide, and releasing the seat lock are interlocked with a predetermined folding angle of the seat back. Therefore, it is possible to provide an easy-to-use storage seat for a vehicle that can perform each operation at an appropriate folding angle of the seat back.
According to the storage seat for a vehicle according to claim 3, each of the first predetermined angle, the second predetermined angle, and the third predetermined angle can be set to values independent of each other, and therefore interlocked with each operation. The folding angle of the predetermined seat back can be arbitrarily set, and a user-friendly vehicle storage seat can be provided.

  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.

  1 to 20 show an embodiment of the present invention. FIG. 1 is a schematic side view of a rear portion of a vehicle equipped with a storage seat for a vehicle, FIG. 2 is a front perspective view of the storage seat for a vehicle, and FIG. 4 is an exploded perspective view of the link mechanism, FIG. 5 is an operation explanatory view of the seat slide mechanism on the link mechanism side, FIG. 6 is an operation explanatory view of the slide lock mechanism on the link mechanism side, and FIG. 7 is a disk link member. 8 is a schematic perspective view of the disk link member, FIG. 9 is an operation explanatory view of the disk link mechanism, FIG. 10 is a schematic sectional view of the slide lock mechanism in a locked state, and FIG. 11 is a lock of the slide lock mechanism. FIG. 12 is an exploded perspective view of the assist mechanism, FIG. 13 is an explanatory diagram of the operation of the assist mechanism when the sheet is stored, FIG. 14 is an explanatory diagram of the operation of the assist mechanism when the sheet is returned, and FIG. Rotation range of FIG. 16 is a schematic illustration of the leg link mechanism, FIG. 17 is a schematic illustration of the striker lock, FIG. 18 is a schematic illustration of the folding angle and action of the seat back, and FIG. FIG. 20 is an operation explanatory diagram at the time of the return operation of the vehicular storage seat.

  In the present embodiment, a seat cushion 11, which will be described later, is described as the seat cushion. Similarly, the seat back is the seat back 12, the seat supporting means is the assist mechanism 300, the operating means is the reclining operation lever 16, and the seat sliding means is the slide rail. 25, 25, the first engagement / disengagement means is a slide lock mechanism (slide rail side 132 of the slide lock mechanism), the second engagement / disengagement means is striker locks 40, 40, the urging means is assist springs 341, 342, 342, The link means is the link mechanism 50, the first link member is the first link member 71, the second link member is the second link member 81, the fourth link member is the fourth link member 101, and the sixth link. The member is a link member 364, the seventh link member is a link member 361, and the first interlocking member is a first interlocking member. Rate 73, the second interlocking member second interlocking plate 74, the third interlocking member is illustrated as link member 361 and the link member 363,.

First, the configuration of the sheet S according to the present embodiment will be described based on FIGS. 1 to 3.
The vehicle equipped with the seat S according to the present embodiment includes two rows of seats in the front and rear, and is configured to be able to store the second row (rear side) seats. The seat S is stored on the front vehicle body floor 4 by rotating in the forward direction with respect to the traveling direction of the vehicle with the seat back 12 folded into the seat cushion 11.

The vehicle body floor 4 of the vehicle on which the seat S is mounted has a step, and the position where the seat S is installed is formed one step higher than the position where the seat S is stored. Therefore, a flat luggage compartment can be secured by storing the seat S forward.
In the vehicle, a floor carpet (not shown) is laid over substantially the entire surface of the vehicle body floor 4.

The second row sheet according to the present invention is configured by arranging two sheets S on the left and right sides, and the storage mechanism and operation method of the right and left sheets are the same as each other. The sheet S will be described.
In the following explanation examples, the description of the right / left side indicating the direction is for the traveling direction of the vehicle.

The seat S is placed on the vehicle body floor 4 and includes a seat cushion 11, a seat back 12, and a headrest 13. As shown in FIG. 2, a reclining release lever 16 as an operation means for releasing the reclining of the seat S is disposed on the upper portion of the seat back 12. Further, although the side surface of the connecting portion of the seat cushion 11 and the seat back 12 is covered with the cover 14, an armrest may be arranged instead of the cover 14.
In the present embodiment, the reclining release operating means is configured in a lever shape, but may be configured in a string shape or a strap shape.

  The seat frame F of the seat S illustrated in FIG. 3 includes a seat cushion frame 21 that constitutes the seat cushion 11 and a seat back frame 22 that constitutes the seat back 12. 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 front side of the seat cushion frame 21 is supported on the vehicle body floor 4 side so as to be pivotable in the front-rear direction via an assist mechanism 300 as a seat support means. Assist springs 341, 342, and 342 are attached to the assist mechanism 300 to assist the returning operation and the storing operation of the sheet S.
The rear side of the seat cushion frame 21 is locked to a striker 44 as a locking member (not shown) on the vehicle body floor 4 side via striker locks 40 and 40 as second engagement / disengagement means configured to be releaseable. Has been.

Slide rails 25, 25 are disposed on the bottom side of the seat cushion frame 21, and via a link mechanism 50 (link mechanism side 61 of the seat slide mechanism) as a link means described later or a known seat position adjusting mechanism. Thus, it is configured to be movable in the front-rear direction in conjunction with the operation of the seat back 12.
Slide rails 25 and 25 as seat slide means are inner rails 25a and 25a disposed on the seat cushion 11 side, and outer rails 25b and 25b attached to the side opposite to the seat cushion 11 side of the inner rails 25a and 25a. The inner rails 25a and 25a are attached to the seat cushion 11 side.
Further, back frame support portions 51 and 151 are disposed at the rear end portion of the seat cushion frame 21.

The seat back frame 22 constitutes a seat back 12 that is covered by a cushion pad (not shown) and supports the occupant's back from behind, and includes an outer frame 22a that is a substantially rectangular frame, and an occupant's back part. And a substantially plate-like back plate 22b attached to the outer frame 22a along the surface that supports the outer frame 22a.
The lower end portion side of the outer frame 22a is connected to the back frame support portions 51 and 151 through a reclining mechanism (not shown) as reclining means.
The reclining mechanism uses a known mechanism that releases the locking of the seat back 12 by operating the reclining release lever 16.

A seat slide mechanism and a slide lock mechanism are attached to the seat cushion frame 21.
The seat slide mechanism is a mechanism that moves the seat S in the front-rear direction along the slide rails 25, 25, and is configured by dividing the main members into two portions, that is, the link mechanism 50 side and the disk link mechanism 200. The link mechanism side 61 of the seat slide mechanism is provided on the outer surface side of the back frame support portion 51, and slide rails 25, 25 (outer rails 25b, 25b) via a disk link mechanism 200 provided on the lower side of the seat cushion frame 21. ) Via wire cables 121, 231, 232. By moving the sheet S backward, the sheet S can be smoothly rotated to the storage position.

The slide lock mechanism as the first engaging / disengaging means is a mechanism for appropriately releasing the lock of the slide rails 25, 25. The main members are the link mechanism side 131 of the slide lock mechanism and the slide rail side 132 of the slide lock mechanism. It is divided into two locations. These are connected via wire cables 122 and 123, and are configured to unlock the slide rails 25 and 25 in accordance with the timing at which the sheet S slides by the seat slide mechanism.
The link mechanism 50 includes the above-described link mechanism side 61 of the seat slide mechanism and the link mechanism side 131 of the slide lock mechanism.

Hereinafter, the configuration and operation of the seat slide mechanism, the slide lock mechanism, and the assist mechanism 300 provided in the seat S according to the present invention will be sequentially described.
First, based on FIG. 4 thru | or FIG. 6, the structure and operation | movement of the link mechanism 50 are demonstrated.
As described above, the link mechanism 50 is a constituent part of the seat slide mechanism and the slide lock mechanism on the back frame support portion 51 side, and is formed on the outer surface side of the back frame support portion 51.

The link mechanism 50 includes a first link member 71, a second link member 81, a third link member 91, a fourth link member 101, and a fifth link member that are pivotally supported. 111. Of these, the first link member 71 and the second link member 81 rotate in the shaft hole 51 a of the back plate support portion 51, and the fourth link member 101 rotates in the shaft hole 51 b of the back frame support portion 51. Supported as possible.
Further, the third link member 91 is supported by the second link member 81, and the fifth link member 111 is rotatably supported by the fourth link member 101.

The second link member 81 and a disk link member 201 described later are connected by a wire cable 121. Similarly, the fourth link member 101 and the slide lock are also connected by wire cables 122 and 123.
The wire cable 121 used in the present embodiment is composed of a pulling wire 121d and a tubular resin cable 121b that guides the pulling wire 121d through the inside. A bracket 121c is attached. The other wire cables 122, 231, 232... Are configured in the same manner as the wire cable 121.

FIG. 5 shows an operation explanatory diagram on the link mechanism side 61 of the seat slide mechanism, and FIG. 6 shows an operation explanatory diagram on the link mechanism side 131 of the slide lock mechanism.
First, the link mechanism side 61 of the seat slide mechanism shown in FIG. 5 will be described.
The link mechanism side 61 (back frame support portion 51 side) of the seat slide mechanism is a mechanism for operating the wire cable 121 and is mainly a first link member 71 pivotally supported by the back frame support portion 51 so as to be rotatable. And a second link member 81 and a third link member 91. Each member will be described.

The back frame support 51 is a substantially triangular member, and is attached to the side surface of the rear end of the seat cushion frame 21 to support a reclining mechanism that connects the seat back frame 22. The seat cushion frame 21 is fixed to the holes 51c and 51c by using fastening members such as bolts. Further, a shaft portion of a reclining mechanism (not shown) is supported by the shaft hole 51a.
Further, the back frame support portion 51 is provided with stoppers 53 a and 53 b that can contact the second link member 81 and the fourth link member 101, respectively, and columnar ribs 94 attached to the third link member 91. A plate-like rib 52 is provided at a position where the contact can be made.

  The first link member 71 is a substantially rectangular member that is rotatably attached to a shaft member of a reclining mechanism (not shown) inserted through the shaft hole 51a of the back frame support portion 51 by the shaft hole 71a. When 71b is locked to the seat back frame 22 side, it rotates in conjunction with the inclination of the seat back 12. It has a shape bent by a bent portion 72 formed between the shaft hole 71a and the hole portion 71b, and a first fan-like first interlocking member on the end side opposite to the hole portion 71b. One interlocking plate 73 is formed. Further, a substantially fan-shaped second interlocking plate 74 is provided at a parallel position spaced from the first interlocking plate 73. The second interlocking plate 74 as the second interlocking member is formed with a locking portion 74a at a portion where the length of the protruding plate has changed. The second interlocking plate 74 is disposed so as to be in contact with a columnar rib 93 described later at an outer edge portion.

The second link member 81 is a substantially rectangular member that is rotatably attached to a shaft member of a reclining mechanism (not shown) that is inserted through the shaft hole 51a of the back frame support portion 51 through the shaft hole 81a. It has a shape bent by a bent portion 82 formed between 81 a and the long hole 83. Further, a hole 81b for pivotally supporting the third link member 91 and long holes 83 and 84 for guiding columnar ribs 93 and 94 attached to the third link member 91 are provided. A locking portion 85 that locks the end of the wire cable 121 is formed at the end opposite to the hole 81a. Moreover, the upper and lower limits of the rotation amount of the third link member 91 can be set by adjusting the lengths of the long holes 83 and 84.
The plate of the back frame support 51 is always provided by a hole 81c formed between the shaft hole 81a and the long hole 83 and an urging spring 119a having both ends locked to the holes 51d of the back frame support 51. It is urged toward the rib 52 side.

The third link member 91 is a substantially triangular member, and the shaft hole 91 a is pivotally supported by the hole 81 b of the second link member 81 via the shaft member 92. Further, columnar ribs 93 and 94 having convex portions penetrating the long holes 83 and 84 of the second link member 81 are fixed to the holes 91b and 91c.
The biasing spring 119b whose both ends are locked to the hole portion 91d and the hole portion 81d of the second link member 81 is always biased toward the hole portion 51a side of the back frame support portion 51.

Next, the relationship and operation between the link members constituting the link mechanism side 61 of the seat slide mechanism described above will be described with reference to FIGS. 5 (a) to 5 (c).
In the standing state of the seat back 12, the occupant can adjust the position by sliding the seat S forward, but the seat S moves to the rearmost position during the storing operation in order to avoid buffering with other members. It is necessary to keep. In the seat slide mechanism, the link mechanism side 61 of the seat slide mechanism and the slide rails 25 and 25 side of the seat slide mechanism are connected by wire cables 121, 231, and 232 via the disk link mechanism 200, and the seat slide mechanism By pulling the end of the wire cable 121 on the link mechanism side 61, the seat S is configured to slide backward with respect to the vehicle direction.

  In the standing state of the seat back 12 shown in FIG. 5A, the seat S is in a state of sliding forward with respect to the vehicle direction, so the second link member 81 pulls the locking portion 85 to the wire cable 121. And turned forward. The second link member 81 is in contact with a stopper 53b formed on the seat back support portion 51 and cannot rotate any further.

FIG. 5B shows a state where the seat back 12 is folded.
In conjunction with the folding operation of the seat back 12, the first link member 71 and the second interlocking plate 74 provided on the first link member 71 rotate. At this time, the columnar rib 93 is movably inserted in the long hole 83 of the second link member 81 and attached to the third link member 91. Since the third link member 91 is biased toward the second interlocking plate 74 by the biasing spring 119b, the third link member 91 is attached to the third link member 91 on the locking portion 74a formed on the second interlocking plate 74. Since the columnar rib 93 is locked and the second link member 81 is connected to the third link member 91 and the shaft member 92 at the same time, the second link member 81 is It rotates in conjunction with one link member 71. At this time, the wire cable 121 attached to the second link member 81 is pulled, and the sheet S slides backward.

FIG. 5C shows a state in which the seat back 12 is folded with respect to the seat cushion 11.
When the second link member 81 and the third link member 91 continue to rotate backward in conjunction with the first link member 71, the columnar ribs 94 attached to the third link member 91 become seat back support portions 51. It abuts on the plate-like rib 52 formed on the surface. As a result, the plate-like rib 52 pushes the columnar rib 94 downward, and the columnar rib 93 attached to the third link member 91 also moves downward in conjunction therewith, so that the locking with the locking portion 74a is released. Is done. For this reason, the wire cable 121 cannot be pulled any further.

  The columnar rib 93 may be directly attached to the second link member 81. In this case, the position of the locking portion 74a formed on the columnar rib 93 and the second interlocking plate 74 is adjusted so that the wire cable 121 is pulled most when the seat back 12 is folded with respect to the seat cushion 11. There is a need to.

The link mechanism side 131 of the slide lock mechanism shown in FIG. 6 will be described.
The link mechanism side 131 (back frame support part 51 side) of the slide lock mechanism is a mechanism for operating the wire cables 122 and 123, and is a first link pivotally supported mainly on the back frame support part 51 so as to be rotatable. The member 71, the fourth link member 101, and the fifth link member 111 are configured. Each member will be described.
As described above, the back frame support portion 51 is attached to the side surface of the rear end portion of the seat cushion frame 11 and connects the seat cushion frame 11 and the seat back frame 12 via a reclining mechanism. The fourth link member 101 is pivotally supported in the shaft hole 51b.

As described above, the first link member 71 as the seat back link member can be rotated by the shaft hole 71a to the shaft member of the reclining mechanism (not shown) inserted through the shaft hole 51a of the back frame support portion 51. While being pivotally supported, the hole 71b is connected to the seat back 12, and thus rotates in conjunction with the seat back 12. The first interlocking plate 73 is disposed at an edge portion so as to be in contact with a columnar rib 113 described later.
The fourth link member 101 is a substantially triangular member rotatably attached to the shaft hole 51b of the back frame support portion 51 by the shaft hole 101a, and the hole portion 101b formed on the front side of the shaft hole 101a. A fifth link member 111 is pivotally supported on the shaft. Locking portions 103a and 103b for attaching the wire cables 122 and 123 are formed on the lower side. Further, a bent portion 102 is formed between the shaft hole 101a and the locking portion 103b, and the fourth link member 101 has a three-dimensional shape. A stopper 105 that restricts the rotation of a fifth link member 111 described later is formed on the lower side of the hole 101b.
In addition, the biasing spring 119c locked between the hole portion 101d formed on the lower side is always biased to the side opposite to the plate-like rib 52 side (forward rotation side) of the back frame support portion 51. ing.

The fifth link member 111 is a substantially rectangular member, and the shaft hole 111 a is pivotally supported by the hole 101 b of the fourth link member 101 via the shaft member 112. In addition, the columnar rib 113 is fixed to the hole 111b to form a convex portion.
Note that the columnar ribs are always provided by the urging springs 119d whose both ends are locked between the hole 111c of the fifth link member 101 and the hole 105a formed in the stopper 105 of the fourth link member 101. The fifth link member 111 is urged in the direction in which the 113 is rotated downward, and is locked by the stopper 105.

Next, the relationship and operation between the link members constituting the link mechanism side 131 of the slide lock mechanism described above will be described with reference to FIG.
It is necessary to release the slide lock of the slide rails 25 and 25 in accordance with the operation of the seat slide mechanism described above. The other ends of the wire cables 122 and 123 connected to the link mechanism side 131 of the slide lock mechanism are connected to the left and right slide lock release levers of the sheet S, and the wire cables 122 and 123 on the link mechanism 50 side are connected. The slide lock is configured to be released by pulling the end portion of the. In addition, the wire cable 123 in this embodiment uses the wire shape | molded by the wire forming process.

  The standing state of the seat back 12 shown in FIG. 6A is a state where the slide lock is locked. Since the fourth link member 101 is urged by the urging spring 119c and the lower side is turned forward, the wire cables 122 and 123 are not pulled. Further, the fourth link member 101 is in contact with a stopper 53a formed on the seat back support portion 51 and cannot be rotated any more in the urging direction.

FIG. 6B shows a state in which the seat back 12 is folded.
In conjunction with the folding operation of the seat back 12, the first interlocking plate 73 provided on the first link member 71 rotates and contacts the columnar rib 113. The columnar rib 113 is attached to the fifth link member 111, while the fifth link member 111 is in contact with the stopper 105 and cannot be rotated any further. Therefore, the first interlocking plate 73 rotates the fourth link member 101 via the columnar rib 113 by pushing down the columnar rib 113 according to the rotation amount. At this time, the wire cables 122 and 123 attached to the locking portions 103a and 103b of the fourth link member 101 are pulled, and the slide rails 25 and 25 are unlocked.

Here, the folding side sliding contact portion 73a formed on the first interlocking plate 73 is further configured by an inclined sliding contact portion 73b and a fan-shaped sliding contact portion 73c. The inclined sliding contact portion 73 b is configured to be inclined with respect to the rotation locus of the first interlocking plate 73, and the contact position of the columnar rib 113 with the rotation of the first link member 71 in the folding direction. Has an inclination toward the outside from the center of rotation. On the other hand, the fan-shaped sliding contact portion 73 c is formed in an arc shape (fan shape) at an equal distance from the rotation center of the first interlocking plate 73.
Along with the folding operation of the seat back, the columnar rib 113 first comes into sliding contact with the inclined sliding contact portion 73b and then with the fan-shaped sliding contact portion 73c. That is, the fourth link member 101 gradually rotates through the columnar rib 113 slidably contacting the inclined slidable contact portion 73b, and the slide locks of the slide rails 25 and 25 are released. By keeping the rotation angle of the link member constant, it is possible to maintain the state in which the slide lock of the slide rails 25, 25 is released.

In addition, since the inclined sliding contact portion 73b and the fan-shaped sliding contact portion 73c are integrally formed continuously, the slide lock of the slide rails 25 and 25 interlocked with the folding angle of the seat back 12 and the release state are maintained. And an integrated operation, and a smooth operation feeling without backlash can be obtained.
The range in which the columnar rib 113 is in sliding contact with the fan-shaped sliding contact portion 73c corresponds to the folding angle of the seat back 12 where the slide lock of the slide rails 25, 25 is released.

FIG. 6C shows a state in which the seat back 12 is folded with respect to the seat cushion 11.
Since the range in which the seat back 12 can be brought into contact with the columnar rib 113 of the first interlocking plate 73 is set narrower than the amount of rotation of the seat back 12, the columnar shape when the amount of rotation of the seat back 12 exceeds the limit of the set value. The contact between the rib 113 and the first interlocking plate 73 is released. At that time, the fourth link member 101 rotates forward in accordance with the urging direction of the urging spring 119c, so that the tension state of the wire cables 122 and 123 is released, and the slide rails 25 and 25 are locked. It becomes a state. At this time, the columnar rib 113 is positioned on the end side of the first interlocking plate 73.

FIG. 6D shows a state in which an operation for raising the seat back 12 with respect to the seat cushion 11 is performed.
When the first link member 71 rotates, the columnar rib 113 comes into contact with the standing side sliding contact portion 73d of the first interlocking plate 73 and moves the columnar rib 113 upward. Since only the fifth link member 111 rotates with the movement of the columnar rib 113, the operation of the first link member 71 is not transmitted to the fourth link member 101. That is, the seat back 12 can be raised with respect to the seat cushion 11 in a state where the slide rails 25 and 25 are locked.

Next, the seat slide mechanism will be further described.
The link mechanism side 61 of the seat slide mechanism constitutes a part of the link mechanism 50 as described above. Here, the disk link mechanism 200 having another configuration will be described with reference to FIGS.
The disk link mechanism 200 is a mechanism that converts the pull amount of the wire cable 121 pulled by the link mechanism side 61 (link mechanism 50) of the seat slide mechanism into an appropriate amount of movement of the sheet S.

FIG. 7 is an exploded perspective view of the disk link member 201 as a rotating member, and FIG. 8 is a perspective explanatory view of the disk link member 201.
The disk link mechanism 200 includes an upper disk link member 211, a lower disk link member 221, and wire cables 121, 231, and 232 for connecting them, and the upper disk link 211 and the lower disk link 221 are one. The disc link member 201 is integrally assembled and is rotatably disposed on a disc bracket 202 (see FIG. 3) provided on the seat cushion frame 21.

The upper disk link member 211 is a substantially disk-shaped member formed of resin, and is formed with a shaft hole 211a, an eccentric rib 211b, and a cable terminal locking portion 213.
The shaft hole 211a is a through-hole formed in the central portion, and has a cylindrical edge portion that projects vertically. The eccentric rib 211b is a fan-shaped member that protrudes to the upper surface side, and has an eccentric arc shape. A guide groove 212 is formed as a groove when the wire cable 121 is disposed at a connecting portion between the eccentric rib 211 b and the upper disk link member 211. The cable terminal locking part 213 is a part that holds the cable terminal 231a between the lower disk link member 221 and the cable terminal locking part 223, and is formed so as to project to the outer edge.

The lower disk link member 221 is a substantially disk-shaped member formed of resin, and is formed with a shaft hole 221a, guide grooves 222a and 222b, and a cable terminal locking portion 223.
The shaft hole 221a is a through-hole formed in the central portion, and becomes integral with the shaft hole 211a when combined with the upper disk link member 211. The guide grooves 222a and 222b as the groove portions are guide grooves of the wire cables 231 and 232 formed in two rows so as to cover approximately half of the outer edge portion of the lower disk link member 221. The cable terminal locking part 223 is a part that holds the cable terminal 231 a between the cable terminal locking part 213 of the upper disk link member 211 in a state assembled with the upper disk link member 211 as described above.

The disk link member 201 is configured by integrally fixing the above-described upper disk link member 211 and the lower disk link member 221. In the present embodiment, the four circular recesses 221b provided in the lower disk link member 221 are fixed by fitting with four circular protrusions (not shown) provided on the upper disk link member 211 side.
The guide grooves 212, 222a and 222b are all formed in a semicircular shape, but may be formed in a circular shape capable of winding the wire cables 121, 231, and 232 once or more.

  A cable terminal 121a is configured by attaching a locking member to the end of the wire cable 121, and the cable terminal 121a is fitted into the cable terminal locking part 212a of the disk link member 201 (upper disk link member 211). It is. The cable 121 is guided along the guide groove 212 on the upper side of the disk link member 201 by attaching the cable terminal 121a to the cable terminal locking portion 212a. The other end side of the wire cable 121 is connected to the link mechanism side 61 of the seat slide mechanism shown in FIG.

A cable terminal 231a is configured by attaching a locking member to the ends of the wire cables 231 and 232. The cable terminal 231a is formed by integrating the ends of the two wire cables 231 and 232, and is sandwiched between the cable terminal locking portions 213 and 223. When the cable terminal 231a is attached to the cable terminal locking portions 213 and 223, the cables 231 and 232 are guided to the guide grooves 222a and 222b on the lower side of the disk link member 201, respectively. Although not shown, the other end portions of the wire cables 231 and 232 are connected to the outer rails 25b and 25b of the left and right slide rails 25 and 25, respectively.
A rotating shaft of the disk link is provided with a torsion spring (not shown) that urges the wire cable 121 around the guide groove 212 in the rotating direction, and a hook of the torsion spring is locked to the locking portion 211c. Has been. Moreover, in this embodiment, although the cable terminal 231a is comprised integrally with the edge part of the two wire cables 231,232, the edge part of these wire cables 231,232 can also be comprised separately.

Next, the operation of the disk link mechanism 200 described above will be described with reference to FIG.
FIG. 9A shows the disk link mechanism 200 in a state where the seat S slides forward, and the operation of the link mechanism side 61 of the seat slide mechanism at this time is shown in FIG. Since the wire cable 121 is not pulled toward the link mechanism 50, the wire cable 121 is wound around the guide groove 212 of the disk link mechanism 200. On the other hand, the wire rails 231 and 232 connected to the outer rails 25b and 25b on the other end side are fully extended and are not wound around the guide grooves 222a and 222b.

  FIG. 9B shows a state of the disk link mechanism 200 when the seat back 12 is folded. The operation on the link mechanism side 61 of the seat slide mechanism at this time is shown in FIG. As the wire cable 121 is pulled toward the link mechanism 50, the disk link member 201 rotates to feed out the wire cable 121 wound around the guide groove 212 and simultaneously wind the wire cables 231 and 232 around the guide grooves 222a and 222b. The outer rails 25b and 25b are pulled.

Compared with the guide groove 212, the guide grooves 222a and 222b have a larger radius, and these guide grooves 212, 222a and 222b are configured coaxially. According to the ratio of the radii of the guide grooves 212, 222a, 222b, the amount of wire cables 231 and 232 that are fed to the wire cable 121 can be adjusted. Since the other end portions of the wire cables 231 and 232 are connected to the outer rails 25b and 25b, the feed (pulling) amounts of the wire cables 231 and 232 are adjusted to be equal to the sliding distance of the sheet S.
The wire cables 121, 231, and 232 are pulled and sent out by winding and releasing the guide cables 212, 222a, and 222b.

  The guide grooves 212, 222 a, and 222 b may not be formed. In this case, the distance between the cable terminal 121 a and the upper disk link member 211 and the cable terminal 231 a and the lower disk link member 221 By adjusting the distance to the center of rotation, it is possible to adjust the feed (pull) amount of the wire cables 231 and 232 with respect to the pull (pull) amount of the wire cable 121.

  By the way, the guide grooves 222a and 222b have a substantially semicircular arc shape, whereas the guide groove 212 has an eccentric shape in which the center portion is closer to the shaft hole 211a side than both ends. By making the guide groove 212 eccentric, a strong torque can be transmitted to the guide grooves 222a and 222b at both end portions far from the rotation axis, while quick rotation can be transmitted in a region near the rotation axis. A strong rotational torque can be exhibited when the sheet S starts to move, and since the sheet S moves quickly during the sliding of the sheet S, the sheet S can be smoothly slid.

  FIG. 9C shows a state of the disk link mechanism 200 in a state where the seat back 12 is folded. The operation on the link mechanism side 61 of the seat slide mechanism at this time is shown in FIG. Since the wire cable 121 is pulled to the link mechanism 50 side, the disk link member 201 is rotated and the wire cable 121 wound around the guide groove 212 is sent out. On the other hand, the wire cables 231 and 232 are wound around the entire circumference of the guide grooves 222a and 222b. At this time, the wire cables 231 and 232 are in the state of being most pulled toward the disk link mechanism 200 side.

  According to the disk link mechanism 200 according to the present invention, in the initial stage of the folding operation of the seat back 12, the wire cable 121 is wound up to the end position of the guide groove 212 and the distance from the rotation center is set. The end side of the long guide groove 212 can be pulled. For this reason, in the initial stage of the folding operation of the seat back 12, the wire cables 231 and 231 locked on the outer rail 25b side are reduced by reducing the pull amount (link ratio) of the wire cables 231 and 232 with respect to the pull amount of the wire cable 121. Since a large tension can be applied to H.232, the operation load until the sheet S starts to slide can be reduced.

Further, by adjusting the shape (size) of the guide groove 212 and the guide grooves 222a and 222b, the link between the wire cable 121 connected to the seat back 12 side and the wire cables 231 and 232 connected to the outer rail 25b side. The ratio can be adjusted, and the folding angle of the seat back 12 can be converted into the target movement amount of the seat cushion 11.
That is, the seat cushion 11 can be moved to a predetermined position during storage in conjunction with the folding operation of the seat back 12.

According to the disk link member 201 according to the present invention, the front / rear position of the seat cushion 11 can be moved in conjunction with the folding angle of the seat back 12, so that the position adjustment operation of the seat cushion 11 manually during storage is possible. Therefore, it is possible to provide a sheet S with good operability that is not necessary.
In addition, since the folding angle of the seat back 12 can be converted into an appropriate amount of movement of the seat cushion 11, the operability in which the seat cushion 11 can be moved to a predetermined position during storage by the folding operation of the seat back 12. Can be provided.
Further, by adopting a configuration in which the movement of the seat cushion 11 in the front-rear direction is interlocked only with the folding operation on one side of the seat back 12, the position of the seat cushion 11 in the front-rear direction is manually set arbitrarily in the installed state. In storing, the seat cushion 11 can be moved to the retractable position in conjunction with the folding angle of the seat back 12, so that the operability can be improved.

Next, the slide lock mechanism will be further described.
The link mechanism side 131 of the slide lock mechanism constitutes a part of the link mechanism 50 as shown in FIG. Here, the configuration of the slide rail side 132 of the slide lock mechanism on the other end side will be described in detail.
The operation on the slide rail side 132 of the slide lock mechanism will be described with reference to FIGS. Since the left and right slide rails 25 and 25 have the same configuration, an arbitrary one side (the seat back 51 side) will be described.

The slide rail side 132 of the slide lock mechanism has a rotating member 30 and a lock member 34 attached to the inner rail 25a side, and a protrusion 26 formed at a position where the outer rail 25b can come into contact with the lock member 34. Configured. The rotating member 30 is locked to the other end side of the cable wire 123 locked to the fourth link member 101.
The rotating member 30 is a member having a substantially U-shaped cross section in which two side plates arranged in parallel are connected at the upper part. A hole 30b to be stopped is formed. When the wire cable 123 is pulled to the link mechanism 50 side, the lower side of the side plate in which the hole 30b is formed is pulled to the link mechanism 50 side, and rotates about the shaft hole 30a. The pressing portion 31 of the side plate opposite to the side plate provided with the hole 30b is configured to project downward by the rotation of the rotating member 30. Further, the pressing portion 31 is configured to be disposed in front of the slide rails 25 and 25 with respect to the hole portion 30b, and adjusts the amount of downward protrusion of the pressing portion 31 due to the rotation of the rotating member 30. It is possible.

The lock member 34 is a substantially rectangular member that is rotatably attached at one end side to the inner rail 25a side, and has a pair of locking holes 34a formed at an edge portion at the other end side. By the rotation of the rotating member 30, the pressing portion 31 can press the intermediate portion of the pair of locking holes 34a, 34a and push it down.
The protrusion 26 formed on the outer rail 25b is a continuous protrusion provided at the end of the winding portion of the outer rail 25b. The protrusion 26 is engaged with the engagement holes 34a and 34a of the lock member 34, thereby sliding the inner rail 25a. Can be locked.
Since the lock member 34 is biased in a direction to push up the locking holes 34a, 34a by a biasing spring (not shown), the protrusions 26, 26 are not pressed by the pressing portion 31 of the rotating member 30. And the locking holes 34a, 34a are held in a meshed state.

FIG. 10 shows a state in which the slide rail 25 is locked. FIG. 10A shows a schematic longitudinal sectional view of the slide rail 25 in a state in which the slide rail 25 is locked, and FIG. The AA cross-sectional schematic of the slide rail 25 of the state in which the slide rail 25 is locked is shown.
When the slide rail 25 is locked, the rotating member 30 is not rotated because the wire cable 123 is not pulled. For this reason, the protrusions 26 and 26 of the outer rail 25b and the locking holes 34a and 34a of the lock member 34 are held in a meshed state, and the slide rail 25 cannot slide.

On the other hand, FIG. 11 shows a state where the slide rail 25 is unlocked, and FIG. 11A is a schematic vertical sectional view of the slide rail 25 in a state where the slide rail 25 is unlocked. FIG. 4B is a schematic cross-sectional view taken along the line BB of the slide rail 25 in a state where the lock of the slide rail 25 is released.
In the state where the lock of the slide rail 25 is released, since the wire cable 123 is pulled, the rotating member 30 rotates and the pressing portion 31 protrudes downward. Therefore, one end portion of the lock member 34 is pushed down by the pressing portion 31, and the engagement between the projections 26, 26 of the outer rail 25b and the locking holes 34a, 34a of the lock member 34 is released, and the sheet S Slide becomes possible.

The assist mechanism 300 shown in FIG. 12 will be described.
The assist mechanism 300 as a seat support means is attached to the front side of the seat cushion frame 21 and supports the seat S on the vehicle body floor 4 side so as to be pivotable in the front-rear direction, and assists the storing operation and the storing operation of the seat S. This mechanism mainly includes a seat mounting member 301, assist springs 341, 342, and 342, a spring cover 311 and a vehicle side bracket 321. In the present embodiment, the forward rotation direction is the retracting rotation direction, and the backward rotation direction is the return rotation direction.

  The seat attachment member 301 is a member for attaching the outer rails 25b, 25b provided at the bottom of the seat cushion frame 21 to the assist mechanism 300, and the outer rails 25b, 25b are bolts (not shown) in the holes 301b, 301b, 301b, 301b. Used to fasten. Two substantially rectangular protruding pieces 303 and 303 are formed on the spring cover 311 side of the seat attachment member 301.

  The assist springs 341, 342, and 342 as urging means urge the sheet S in the returning direction when the sheet S is returned and the urging direction (retracting direction) when the sheet S is stored. There are two types of two assist springs 342 and 342, and both springs have end portions 341a, 342a, and 342a as pressure receiving portions that can come into contact with the protruding pieces 303 and 303 as pressing portions, respectively. , 342 is formed by bending the end of the L-shape. The assist springs 341, 342, and 342 in the present embodiment are all constituted by torsion coil springs, but can also be constituted by spiral springs or torsion bars.

  The spring cover 311 is a cover member that covers the assist springs 341, 342, and 342 and holds the assist springs 341, 342, and 342 in an appropriate position, and serves as an opening through which the protruding pieces 303 and 303 are inserted and brought into contact with the ends of the assist springs 342 and 342. Similarly, a notch 313 is formed as an opening for inserting one of the projections 303 and 303 into contact with the end of the assist spring 341. A shaft member 331 as a connecting member is fitted into the shaft holes 311a and 311a, and is fixed to the vehicle side bracket 321 by using bolts (not shown) in the holes 311b and 311b.

The vehicle side bracket 321 is a member that fixes the assist mechanism 300 to the vehicle body floor side 4, and fastens the holes 321 c and 321 c to the vehicle body floor 4 side with bolts (not shown).
In this embodiment, the spring cover 311 and the assist springs 341, 342, and 342 are attached to the vehicle body floor 4 side. However, the spring cover 311 and the assist springs 341, 342, and 342 are attached to the seat cushion 11 side. The projecting pieces 303 and 303 may be attached to the body bracket 321 side.

The assist springs 341, 342, and 342 are disposed in a state where they are penetrated inside the coil and arranged in series by a shaft member 331 that is pivotally supported by the shaft holes 321a and 321a. At this time, the assist springs 341, 342, 342 of the assist springs 341, 342, 342 are arranged using the spacers so that the end portions 341a, 342a, 342a are respectively disposed in the notches 313, the holes 312 and 312 of the spring cover 311. , 342 are adjusted. The assist springs 341, 342, and 342 are provided with assist springs 342 and 342 that bias the seat S in the retracting direction across the assist spring 341 that biases the sheet S in the return direction.
The shaft member 331 is also inserted into 301a, 311a, 311a, 301a, and supports the spring cover 311 and the seat attachment member 301.

A method of manufacturing the assist mechanism 300 as an urging device mainly composed of the assist springs 341, 342, 342, the vehicle side bracket 321, the spring cover 311, and the shaft member 331 will be described below.
The assist mechanism 300 includes a first step of placing the assist springs 341, 342, 342 on the vehicle side bracket 321, a second step of placing the spring cover 311 on the assist springs 341, 342, 342, The member 331 is inserted into the shaft holes 321a and 321a on the end side of the vehicle side bracket 321, the shaft holes 311a and 311a on the end side of the spring cover 311, and the coil inner sides of the assist springs 341, 342 and 342. And a third step of connecting the spring cover 311 to the vehicle side bracket 321 and rotating the assist springs 341, 342, and 342 in a direction to bend about the spring cover 311. A fourth step of making the holes 321b, 3 of the vehicle side bracket 321 in a state where the assist springs 341, 342, 342 are bent. 1b and the hole 311b of the spring cover 311, and a fifth step of integrally fixed with bolts and 311b, are manufactured from.

Further, the shaft member 331 is rotatably inserted into the shaft holes 301a and 301a of the seat attachment member 301 fixed to the seat cushion 11 side, thereby attaching the assist mechanism 300 to the seat S side.
By manufacturing the assist mechanism 300 in such a process, the assembly workability of the assist mechanism 300 itself can be improved. In addition, the assist springs 341, 342, and 342 are assembled in advance to unitize the assist mechanism 300, so that the assist springs 341, 342, and 342 are temporarily deformed and assembled when the urging device is assembled to the vehicle seat S. The work process can be eliminated, and the workability of assembling to the vehicle seat S can be greatly improved.
When a spiral spring is used instead of the assist springs 341, 342, 342, in the third step, instead of inserting the shaft member 331 inside the coil of the assist springs 341, 342, 342, the coil inside of the spiral spring is used. It is necessary to fix the end of this to the shaft member 331.

Next, the operation of the assist mechanism 300 described above will be described with reference to FIGS.
FIG. 13 is a cross-sectional explanatory view showing the operation of the assist mechanism 300 in the returning operation of the sheet S, and FIG. 14 is a cross-sectional explanatory view showing the operation of the assist mechanism 300 in the storing operation of the sheet S.
FIG. 13A shows a state in which the sheet S is stored, and the protruding piece 303 formed on the sheet attachment member 301 is in contact with the end 341 a of the assist spring 341. The second contact surface 303b of the projection piece 303 is urged in the return rotation direction from the end 341a of the assist spring 341. By releasing the lock by a locking member (not shown) that locks the rotation, the sheet S can be rotated in the return rotation direction.

FIG. 13B shows a state in which the rotation lock of the seat S is released, and the seat cushion 11 jumps up in the return rotation direction by the urging of the assist spring 341. For this reason, since the occupant can return the seat S by rotating the seat cushion 11 in the jumped-up direction, the operation method is easy to understand. Further, the urging force of the assist spring 341 is acting in the return direction in an angular range in which the protruding piece 303 is in contact with the end 341a of the assist spring 341. The urging force acts in the turning direction to return, and the sheet S can be returned with a small force.
When the sheet S is rotated in the storing rotation direction by the storing operation of the sheet S, the impact of the sheet S colliding with other members when the sheet S is stored can be reduced by the repulsive force of the assist spring 341.

Here, if the rotation angle of the seat cushion 11 is 0 ° in the seat S installation state and 180 ° in the storage state, the angle at which the protrusion 303 contacts the end 341a of the assist spring 341 (storage side assist range) is It is set to 180 ° to 90 °. The angle range of 180 ° to 90 ° is the final stage of the storage rotation operation and the beginning stage of the return rotation operation. That is, the return operation can be assisted to reduce the operation load, and the impact when the members collide with each other by the storage operation can be reduced.
Further, the flip-up angle when the lock with the vehicle body floor 4 side is released for returning the seat S is set to 120 ° to 100 °, preferably 100 °.

  FIG. 14A shows an installation state of the sheet S, in which the protruding pieces 303 and 303 formed on the sheet attachment member 301 are in contact with the end portions 342a and 342a of the assist springs 342 and 342. FIG. The first contact surfaces 303a and 303a of the projecting pieces 303 and 303 are urged from the end portions 342a and 342a of the assist springs 342 and 342 in the retracting rotation direction. By releasing the lock between the vehicle body floor 4 side and the strikers 44, 44 by the striker lock mechanism 350, the seat S can be rotated in the retracted rotation direction.

FIG. 14B shows a state in which the lock with the strikers 44 and 44 on the vehicle body floor 4 side is released, and the seat cushion 11 jumps up in the retracting rotation direction by the urging of the assist springs 342 and 342. For this reason, since the occupant can store the seat S by rotating the seat cushion 11 in the jumped-up direction, the operation method is easy to understand. Further, the urging force of the assist springs 342 and 342 is acting in the retracting direction in an angular range where the projecting pieces 303 and 303 are in contact with the end portions 342a and 342a of the assist springs 342 and 342. The urging force acts in the rotating direction for storing, and the sheet S can be stored with a small force.
When the sheet S is rotated in the retracted rotation direction by the return operation of the sheet S, the impact of the sheet S colliding with other members when the sheet S is returned can be mitigated by the repulsive force of the assist springs 342 and 342.

Here, when the rotation angle of the seat cushion 11 is 0 ° in the installed state of the seat S and 180 ° in the stored state, the angle (installation side assist range) at which the protrusion 303 contacts the end 342a of the assist spring 342 is It is set to 0 ° to 70 °. The angle range of 0 ° to 70 ° is an angle close to the installation (return) state of the sheet S, and is the final stage of the return rotation operation and the initial stage of the storage rotation operation. That is, the storage operation can be assisted to reduce the operation load during storage, and the impact when the members collide with each other by the return operation can be reduced.
Further, the flip-up angle when the lock with the vehicle body floor 4 side is released for storing the seat S is set to 20 ° to 50 °, preferably 45 °.

FIG. 15 is an explanatory diagram of the rotation range of the sheet S and the effect range of the assist mechanism 300. The assist mechanism 300 can assist the sheet operation by exerting an urging force with respect to any operation of storing / returning the sheet S.
When the rotation angle of the seat cushion 11 is 0 ° in the installed state of the seat S and 180 ° in the retracted state, the projecting piece 303 is in contact with the end portion 341a of the assist spring 341 in the angle range of 180 ° to 90 °. In the angle range of 0 ° to 70 °, the protruding piece 303 is set so as to be in contact with the end portions 342a and 342a of the assist springs 342 and 342. Therefore, it is necessary for both the storing operation and the returning operation of the sheet S. The operation load can be reduced, and the impact when the members collide with each other by the storing / returning operation of the sheet S can be reduced. Further, the flip-up angle is set to about 45 ° on the installation side and about 100 ° on the storage side. The range of 70 ° to 90 ° is a neutral range that is not biased in any direction.

According to the assist mechanism 300 according to the present invention, the assist springs 341, 342, and 342 can be assembled in advance with the assist springs 341, 342, and 342 attached, and the assist springs 341, 342, and 342 are assembled to the seat S. At this time, it is not necessary to temporarily deform and assemble the assist springs 341, 342, 342, so that the assembly workability can be improved.
Further, assist springs 341 that can urge the seat cushion 11 in the retracting rotation direction with an appropriate urging force and assist springs 342 and 342 that can be urged in the return rotation direction are arranged at appropriate positions. Since the member which urges | biases the seat cushion 11 within the range of a predetermined | prescribed urging | biasing angle can be comprised integrally, it has favorable assembly workability | operativity.

  In addition, an appropriate biasing force is applied by the assist mechanism 300 in both the storage rotation direction and the return rotation direction, and the operation load is applied to both the storage rotation direction and the return rotation direction. Since the vehicle storage seat S can be flipped up at an appropriate angle in both the storage operation and the return operation after the rotation is released, the operation is easy to understand, and the storage operation and the return are possible. It is possible to provide a storage seat for a vehicle with improved operability in any operation.

The striker lock mechanism 350 will be described.
The striker lock mechanism 350 includes a leg link mechanism 360 provided on a side surface portion of the back frame support portion 151 and striker locks 40 and 40 attached to the seat cushion frame 21. It is connected.
FIG. 16 is a schematic explanatory view of the leg link mechanism 360, and FIG. 17 is an explanatory view of the striker lock 40.

  The leg portion link mechanism 360 shown in FIG. 16 is provided on the back frame support portion 151 disposed on the opposite side of the back frame support portion 51 provided with the link mechanism 50, and when the seat back 12 is folded. The wire cable 41 is configured to be pulled. A link member 361 (seventh link member) as a seat back link member that rotates in conjunction with the seat back 12, and a link member 362 that is coaxially and independently attached to the link member 361. The link member 363 is pivotally attached to the link member 362, and the sixth link member 364 is pivotally attached to the back frame support 151. The link member 362 is formed with a columnar rib 362a at a position where it can come into contact with the widened portion 361a provided on the link member 361, while the link member 364 can come into contact with the lower end side of the link member 362. Columnar ribs 364a are formed at the positions. The link member 361 and the link member 363 constitute a third connecting member.

  The two stoppers 362b and 362c provided on the link member 362 restrict the rotation of the link member 362 and the link member 363 in one direction. That is, in the standing operation of the seat back 12, the link members 362 and 363 are rotated even if they contact the columnar ribs 364a provided on the link member 364, and the link member 364 is rotated to avoid interlocking with the columnar ribs 364a. I can't let you. On the other hand, in the folding operation of the seat back 12, since the rotation of the link members 362 and 363 is restricted, the link member 363 presses the columnar rib 364a to rotate the link member 364. The wire cable 41 connected to the link member 364 can be pulled in conjunction with each other.

  Note that the link member 361 rotates in conjunction with the seat back 12, similarly to the first link member 71. Therefore, the link member 361, the first link member 71, and the seat back link member can be integrally formed. In this case, the striker lock mechanism 350 can also be attached to the back frame support portion 51 side, which can be used when the space on one side of the sheet S is narrow.

The striker lock 40 shown in FIG. 17 is connected to the other end portion side of the wire cable 41 connected to the leg link mechanism 360. Although the striker lock 40 is provided on the left and right sides, the striker lock 40 on any one side will be described because it has the same configuration.
The striker lock 40 is attached to the seat cushion frame 21 side, and when the wire cable 41 is pulled by the operation of the leg link mechanism 360, the locking claw 43 connected to the wire cable 41 causes the locking claw rotation shaft 43a to move. It is a mechanism that rotates to the center and releases the lock with the striker 44 on the vehicle body floor 4 side. When the striker lock 40 is released, the seat cushion 11 is supported only on the assist mechanism 300 side, so that the seat cushion 11 is rotatable in the front-rear direction.
The locking claw 43 is constantly biased by a biasing spring 45 in a direction in which the locking state with the leg striker 44 is maintained.

Below, the folding angle of the seat back 12 and the linkage of each mechanism will be described.
FIG. 18 is an explanatory view of the folding angle and action of the seat back 12.
First, by operating the reclining release lever 16 with the seat back 12 standing (angle I), the reclining mechanism is unlocked, and the reclining angle can be adjusted within the reclining adjustment range (angles I to II). Become. In FIG. 18, the angle I is described as being about 110 °. However, the reclining adjustment may be performed up to the full flat position (angle I = 180 °).
When the seat back 12 is further rotated in the folding direction while the reclining release lever 16 is operated, the slide lock mechanism is operated at an angle III, the slide lock is released, and the seat S can be slid.

The seat slide mechanism operates to slide the seat S backward in the range of angles III to IV as the first predetermined angle range. Then, the slide is locked again by the slide lock mechanism when rotated to the angle IV position. The angle at which the slide lock is released is in the range of III to IV (second predetermined angle range).
Further, when the seat back 12 is tilted to reach the angle V as the third predetermined angle, the striker locks 40, 40 are released, and the seat S can be rotated forward. At this time, the assist mechanism 300 of the sheet S assists in the storing direction of the sheet S and is flipped up.
When the seat back 12 is further folded with respect to the seat cushion 11 while the seat S is rotated forward, the rotation of the seat back 12 with respect to the seat cushion 11 is locked by known locking means when the angle VI is reached. Is done.
The striker locks 40, 40 may be released at the angle VI, and the rotation of the seat back 12 may be locked at the angle V.

That is, the seat back 12 is folded, the slide lock is released, the seat cushion 11 is slid to the rearmost position, the slide is re-locked, the striker locks 40 and 40, and the seat cushion 11 by one operation of operating the reclining release lever 16. Since each operation of flipping up in the storage rotation direction can be sequentially interlocked according to the folding angle of the seat back 12, the number of operations for storing the seat is reduced and the usability is improved. A storage sheet can be provided.
Further, since the seat cushion 11 is flipped up in the retracting rotation direction, it is possible to provide a vehicular retractable seat with easy operation and improved usability.

  Here, the angle I is set to an arbitrary reclining adjustment angle, the angle II is set to 90 °, the angle III is set to 70 °, the angle IV is set to 30 °, and the angle V is set to 20 °. The angle VI is an angle at which the seat back 12 is folded with respect to the seat cushion 11, and takes a value of 0 ° to 10 °. The angles I to VI are all folding angles of the seat back 12 with respect to the seat cushion 11.

The sheet S storing / returning operation according to the present embodiment will be described with reference to FIGS. 19 and 20.
First, the storing operation of the sheet S will be described with reference to FIGS. 19 (a) to 19 (e).
FIG. 19A shows an installation state of the sheet S. A reclining release lever 16 is provided on the upper portion of the seat back 12.

FIG. 19B shows a state in which the reclining mechanism is unlocked and the seat back 12 is folded with respect to the seat cushion 11.
The reclining mechanism is unlocked by operating the reclining release lever 16 by the occupant.
As the seat back 12 is folded, the seat slide mechanism is activated and the seat S slides to the rear position.

FIG. 19C shows a state in which the seat back 12 is folded with respect to the seat cushion 11. The striker locks 40, 40 are released.
FIG. 19D shows a state in which the seat S is rotated forward about the rotation axis of the assist mechanism 300 after the striker locks 40 are released. It is flipped up by the assist mechanism 300. Furthermore, since the urging force is acting in the forward rotation direction, it can be rotated with a relatively small operating force.

FIG. 19E shows a stored state in which the forward rotation of the seat S is completed. At this time, the assist mechanism 300 reduces the rearward rotation speed of the sheet S, and the impact during storage is reduced. In the retracted state, the back surface of the seat cushion 11 and the vehicle body floor 4 become an integral flat surface, and a wide cargo space is secured.
In order to fix the seat S to the vehicle body floor 4 side in the retracted state, known locking means can be attached. By fixing the seat S, it is possible to prevent the seat S from moving unexpectedly while the vehicle is running. Moreover, since it can be stored without protruding upward from the surface of the vehicle body floor 4 in the storage state, a large cargo space can be secured in the storage state.

Next, the returning operation of the sheet S will be described with reference to FIGS. 20 (a) to 20 (d).
FIG. 20A shows the storage state of the sheet S. When the locking means that fixes the seat S to the vehicle body floor 4 side is released, the seat S can be rotated backward as a return operation.
FIG. 20B shows a state in which backward rotation is performed as a return operation. At this time, it is flipped up by the assist mechanism 300. Furthermore, since the urging force works in the backward rotation direction, it can be rotated with a relatively small operation force.

FIG. 20C shows a state in which the backward rotation is further advanced. At this stage, the urging force of the assist mechanism 300 is not working, but the center of gravity of the sheet S is located near the upper part of the rotation shaft of the assist mechanism 300, so that it can be operated with one hand.
At the end of the rotation of the seat S in the return direction, the seat cushion 11 is urged in the retracted rotation direction by the assist springs 342 and 342, so the seat S is pressed downward (return rotation direction) to strike the striker. Locks 40 and 40 are locked to a striker 44 on the vehicle body floor 4 side. FIG. 20D shows a state in which the sheet S is rotated to the installation position. The seat S returning operation is completed by raising the seat back 12.
The front-rear position of the seat S can be adjusted to an arbitrary position by operating a known means that is manually connected to the slide lock mechanism and can release the slide lock.

  In the present embodiment, the second 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. 1 is a schematic perspective view of a seat frame according to an embodiment of the present invention. It is a disassembled perspective view of the link mechanism which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing by the side of the link mechanism of the seat slide mechanism which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing by the side of the link mechanism of the slide lock mechanism which concerns on one Embodiment of this invention. It is a disassembled perspective view of the disk link member which concerns on one Embodiment of this invention. It is a schematic perspective view of the disk link member concerning one embodiment of the present invention. It is operation | movement explanatory drawing of the disk link mechanism which concerns on one Embodiment of this invention. It is a section schematic diagram in the locked state of the slide lock mechanism concerning one embodiment of the present invention. It is a section schematic diagram in the lock release state of the slide lock mechanism concerning one embodiment of the present invention. It is a disassembled perspective view of the assist mechanism which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing of the assist mechanism at the time of the sheet storage which concerns on one Embodiment of this invention. It is operation | movement explanatory drawing of the assist mechanism at the time of the sheet | seat return which concerns on one Embodiment of this invention. It is explanatory drawing of the rotation range of the sheet | seat which concerns on one Embodiment of this invention, and the effect range of an assist mechanism. It is a schematic explanatory drawing of the leg link mechanism which concerns on one Embodiment of this invention. It is a schematic explanatory drawing of the striker lock which concerns on one Embodiment of this invention. It is a schematic explanatory drawing of the folding angle and effect | action of the seat back which concerns on one Embodiment of this invention. It is operation explanatory drawing at the time of storing operation of the storage seat for vehicles concerning one Embodiment of this invention. It is operation explanatory drawing at the time of the return operation of the storage seat for vehicles which concerns on one Embodiment of this invention.

Explanation of symbols

S Seat F Seat frame 4 Car body floor 11 Seat cushion 12 Seat back 13 Headrest 14 Cover 16 Reclining release lever 21 Seat cushion frame 26 Projection 51, 151 Back frame support 22 Seat back frame 22a Outer frame 22b Back plate 23 Pillar support 30 Rotating member 31 Pressing portion 34 Locking member 34a Locking hole 40 Striker lock 43 Locking claw 43a Locking claw rotating shaft 44 Strike 25 Slide rail 25a Inner rail 25b Outer rail 50 Link mechanism 61 Link mechanism side 200 of seat slide mechanism Disc Link mechanism 131 Link mechanism side of slide lock mechanism 132 Slide rail side of slide lock mechanism 300 Assist mechanism 350 Striker lock mechanism 360 Leg Part link mechanism 41, 121, 122, 123, 231, 232 wire cable 121d pulling wire 121b resin cable 121c bracket 45, 119a, 119b, 119c, 119d biasing spring 71 first link member 81 second link member 91 second Third link member 101 Fourth link member 111 Fifth link member 30a, 51a, 51b, 71a, 81a, 91a, 101a, 111a, 211a, 221a, 301a, 311a, 321a Shaft hole 30b, 51d, 71b, 81b , 81c, 81d, 91b, 91c, 91d, 101b, 101d, 301b, 312, 311b, 321c, 321b, 105a, 51c, 111b, 111c hole 72, 82, 102 bent portion 73 first interlocking plate 73a folding side Sliding part 73d Standing side sliding contact portion 73b Inclined sliding contact portion 73c Fan-shaped sliding contact portion 74 Second interlocking plates 74a, 85, 103a, 103b, 211c Locking portion 52 Plate-shaped ribs 53a, 53b, 105, 362b, 362c Stoppers 83, 84 Long holes 93, 94, 113, 362a, 364a Columnar ribs 92, 112, 331 Shaft member 201 Disk link member 211 Upper disk link member 221 Lower disk link member 202 Disk bracket 211b Eccentric rib 221b Circular recess 212, 222a, 222b Guide Grooves 212a, 213, and 223 Cable end locking portions 121a and 231a Cable end 301 Seat attachment member 311 Spring cover 313 Notch portion 321 Vehicle side brackets 341 and 342 Assist springs 341a and 342a End portion 303 Projection piece 303a First contact Surface 30 b a second abutment surface 361, 362, 363 and 364 link members 361a widened portion

Claims (3)

Seat support means for rotatably supporting one end of the seat cushion;
A seat back that can be folded to the seat cushion via reclining means;
Operating means capable of operating the reclining means;
Link means interlocking with the folding angle of the seat back;
A seat slide means for slidably supporting the seat cushion in the front-rear direction;
First engaging / disengaging means capable of engaging / disengaging the slide in the front-rear direction of the seat sliding means;
Second engagement / disengagement means capable of engaging / disengaging the opposite end side of the seat cushion and the vehicle body floor side;
Biasing means capable of flipping up the seat cushion at least in the retracting rotation direction;
The storage seat for a vehicle, wherein the link means is connected to the first engaging / disengaging means, the seat sliding means, and the second engaging / disengaging means. The link means includes a seat back link member that rotates in conjunction with a folding angle of the seat back;
A second link member pivotally supported, connected to the first link member and the seat slide means, and rotated in conjunction with the seat back link member;
The fourth link member pivotally supported, connected to the seat back link member and the first engagement / disengagement means, and rotated in conjunction with the seat back link member;
The sixth link member pivotally supported, connected to the seat back link member and the second engagement / disengagement means, and rotated in conjunction with the seat back link member;
The seat back link member includes a second interlocking member that locks the second link member with a folding angle of the seat back in a first predetermined angle range, and a folding angle of the seat back is a second predetermined angle. A first interlocking member that locks the fourth link member in conjunction with the folding angle of the seat back in a range, and the sixth link member that rotates with the folding angle of the seat back being a third predetermined angle. The vehicle storage seat according to claim 1, further comprising a third interlocking member to be moved.   The seat back link member includes a first link member including the first interlocking member and the second interlocking member, and a seventh link member including the third interlocking member. The vehicular storage seat according to claim 1, wherein the vehicular storage seat is provided.

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