JP2020121662A - Seat structure - Google Patents

Abstract

To provide a seat structure capable of folding a seat back on a seat cushion by the pulling operation of a band, and keeping the folded state of the seat back.SOLUTION: A seat structure 1 includes a seat 2 that has a seat cushion 3 that is a seat surface of an occupant and a seat back 4 for supporting the occupant's back, and a band 6 that folds the seat back 4 onto the seat cushion 3 by being pulled to the rear side of the seat 2. The band 6 has a pulling end that is drawn out to the rear side of the seat 2 and is pulled by an operator, a fixed end that is fixed to the seat back 4, and a first intermediate portion that is folded back from the pulling end side to the fixed end side on the seat cushion 3.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle seat structure.

As a technique for storing a seat in which a seat back is folded on a seat cushion in an area in front of an area where the seat cushion is placed, a vehicle seat structure of Patent Document 1 and a seat mounting of an automobile mat of Patent Document 2 The structure is known.

The seat storage procedure in the vehicle seat structure of Patent Document 1 is as follows. First, the seat back is unlocked by the reclining mechanism and is folded onto the seat cushion placed on the deck portion. The seat back is maintained in a folded state on the seat cushion by the reclining mechanism. Next, the strap (band) pulled out rearward from the seat back is pulled, whereby the support leg fixed to the floor and the seat cushion are unlocked. Then, by pulling the strap upward and forward, the folded seat is lifted and translated from the deck portion to the front floor portion thereof.

The seat storage procedure in the seat mounting structure for the automobile mat of Patent Document 2 is as follows. First, similarly to Patent Document 1, the seat back is folded on the seat cushion mounted on the rear floor panel by the reclining mechanism. Next, unlike Patent Document 1, without using a strap (band), the lock of the lock mechanism that fixes the support leg extending downward from the seat cushion and the rear floor panel is unlocked. Next, unlike Patent Document 1, the folded seat is rotated from the rear floor panel to the front front floor panel around the front shaft of the seat as a rotation axis without using a strap.

JP, 2015-98240, A JP 2001-347867 A

For example, when a seat that has a seat back folded on a seat cushion is rotated forward, for example, with the front end side of the seat as the axis of rotation, the seat back does not have to be held by the operator if the operator does not hold the seat back by hand. Separate from the seat cushion. It is very complicated for the operator to rotate the sheet while holding it by hand.

One of the objects of the present invention is to provide a seat structure in which a seat back can be folded on a seat cushion and the seat back can be maintained in a folded state by a pulling operation of a band.

(1) The seat structure according to one aspect of the present invention is
A seat having a seat cushion that serves as a seat surface for the occupant and a seat back that supports the back of the occupant;
A band for folding the seat back on the seat cushion by pulling the seat back,
The band is
A pulling end that is pulled out to the rear of the seat and pulled by the operator,
A fixed end fixed to the seat back,
The seat cushion includes a first intermediate portion that is folded back from the pulling end side toward the fixed end side.

(2) As one form of the seat structure,
The sheet is
A back lock having a lock position for fixing the seat back so that the seat back can be seated and an unlock position for releasing the fixation;
A floor lock having a lock position for fixing the seat cushion to a floor below the seat cushion and an unlock position for releasing the fixation;
The band is
A second intermediate portion that is folded back from the first intermediate portion side toward the fixed end side above the fixed end in the seat back,
A first extending portion extending from the second intermediate portion toward the back lock where the fixed end is provided;
A second extending portion extending from the second intermediate portion toward the floor lock,
Displacement of the back lock to the unlock position by pulling the pull end,
After the back lock is unlocked, further pulling of the pulling end causes the seat back to be folded onto the seat cushion and the floor lock to be displaced to the unlock position.

In the seat structure of the above (1), the seat back can be folded on the seat cushion and the seat back can be kept folded by pulling the band. The band extends forward from the rear pulling end of the seat and is folded back toward the fixed end fixed to the seat back by the first intermediate portion of the seat cushion. Therefore, when the operator pulls the pulling end backward, the pulling force of the operator acts on the fixed end in the direction of bringing the seat back closer to the seat cushion. By keeping the band pulled, you can keep the seat back folded. Therefore, even if the reclining mechanism is not provided, when the seat with the seat back folded is rotated forward, the operator can suppress the separation of the seat back from the seat cushion without pressing the seat back by hand. Therefore, the work of rotating the seat forward is unlikely to be complicated.

In the seat structure of (2), the back lock is unlocked, the seat back is folded on the seat cushion and the folded state is maintained, the floor lock is unlocked, and the seat forward is locked by pulling the band. The rotating work and the work can be performed in that order.

FIG. 1 is a side view schematically showing the seat structure according to the first embodiment. FIG. 2 is an enlarged side view showing the vicinity of the band of the seat structure according to the first embodiment. FIG. 3 is a side view showing the outline of the seat structure according to the first embodiment in a state where the back lock is disengaged. FIG. 4 is an enlarged side view showing the outline of the seat back of the seat structure according to the first embodiment in a folded state. FIG. 5 is an enlarged side view showing the outline of the seat structure according to the first embodiment with the floor lock disengaged.

Embodiment 1 of the seat structure of the present invention will be described below with reference to FIGS. 1 to 5. The same reference numerals in the drawings indicate the same names. In the figure, “FR” indicates the front of the vehicle, “RR” indicates the rear, “UP” indicates the upper side, and “LWR” indicates the lower side.

<<Embodiment 1>>
[Seat structure]
The seat structure 1 according to the first embodiment includes a seat 2 having a seat cushion 3 that serves as a seating surface of an occupant and a seat back 4 that supports the back of the occupant. One of the features of the seat structure 1 of the present embodiment is that it has the band 6 that serves as a specific routing route. By pulling the band 6 to the rear of the seat 2, the seat back 4 can be folded on the seat cushion 3. Hereinafter, each configuration will be described in detail.

[Sheet]
The seat 2 is a rear seat placed on the floor (rear floor panel 8) (FIG. 1). The rear floor panel 8 has a seat mounting area and a foot area that forms a space for the occupant's feet in front of the seat mounting area. In the present example, the seat placement area is formed at a position higher than the foot area. The seat 2 is a bench type in this example, but may be a separate type. The type of seat 2 is a fixed type that cannot slide back and forth. The seat 2 has a seat cushion 3 and a seat back 4 (FIGS. 1 and 2). The seat 2 may have a headrest (not shown).

(Seat cushion)
The seat cushion 3 serves as a seating surface of a seated occupant (FIG. 2). The seat cushion 3 has a cushion pad 31, a cushion frame 32, a floor lock 33, and a first hook portion 34. The cushion pad 31 constitutes a seating surface of the seat cushion 3, and suppresses transmission of vehicle vibration and the like to the occupant to enhance the sitting comfort of the occupant. The cushion frame 32 forms the skeleton of the seat cushion 3. The cushion frame 32 has a hinge bracket 322.

The hinge bracket 322 is connected to a hinge bracket 422 (described later) of the seat back 4. A hinge pin 5 can be used for this connection. The hinge bracket 322 is formed in a plate shape and is integrally provided on the cushion frame 32 at the rear side of the side frame 321. The hinge bracket 322 has an insertion hole (not shown) through which the hinge pin 5 is inserted, an insertion hole (not shown) through which the back striker 35 is inserted, and a through hole through which a shaft portion 331 that supports the floor lock 33 is inserted. (Not shown) and an engagement hole 323 into which an engagement projection 333 (described later) of the floor lock 33 is engaged are formed. The engagement hole 323 is formed so that the engagement protrusion 333 can be rotated within a predetermined range.

The floor lock 33 fixes the cushion frame 32 to the floor and releases this fixation. The floor lock 33 is located in front of a second hooking portion 44 (described later) of the seat back 4. The floor lock 33 of this example has a hook portion 332 and an engagement protrusion 333, and is rotatably provided with a shaft portion 331 fixed to the rear end of the hinge bracket 322 as a fulcrum.

The hook portion 332 is engaged with the floor striker 80. The floor striker 80 is fixed to the rear floor panel 8 (FIG. 1). The hook portion 332 is formed in an L shape and extends downward and forward of the floor lock 33 (FIG. 2). The engagement protrusion 333 is rotatably fitted in an engagement hole 323 provided in the hinge bracket 322. The engagement protrusion 333 is formed in an L shape, and extends toward the upper side of the floor lock 33 and the inner side of the seat 2 (the rear side of the plane of FIG. 1). A fixed end of the band 6 (a second fixed end 624 of the second band 62) described later is connected to the engagement protrusion 333.

The rotation range of the floor lock 33 is a lock position (FIG. 2) for fixing the cushion frame 32 to the rear floor panel 8 (FIG. 1) and an unlock position for releasing the fixation of the cushion frame 32 to the rear floor panel 8 (FIG. 1). (Fig. 5). The lock position of the floor lock 33 is a position where the hook portion 332 is rotated forward (the engagement protrusion 333 is rearward), and the unlock position is that the hook portion 332 is rotated backward (the engagement protrusion 333 is forward). It is the moved position. The floor lock 33 is constantly biased by a torsion spring (not shown) or the like so as to be located at the lock position (FIG. 2).

In this example, two convex portions 334 are provided on the side surface of the floor lock 33. The band 6 is routed between the two protrusions 334 to regulate the looseness of the band 6.

The first hooking portion 34 hooks first intermediate portions 611 and 621 (described later) of the band 6. The first hooking portion 34 is provided integrally with the side frame 321 of the cushion frame 32. The first hooking portion 34 of the present example projects from below the side frame 321 toward the outside of the seat 2 (front side of the plane of FIG. 2) so as to be exposed to the outside of the cushion pad 31. Therefore, the band 6 (first intermediate portions 611 and 621) is arranged so as to be arranged on the side of the cushion pad 31. The first hooking portion 34 may project from the side frame 321 toward the inside of the seat 2 (back side in the plane of FIG. 2) so as to be provided inside the cushion pad 31. In that case, the band 6 (first intermediate portions 611 and 621) is arranged so as to penetrate the back pad 41. The first hooking portion 34 may be configured by, for example, a rod-shaped member of a low friction member, or may be configured by separately coating the surface of the rod-shaped member with the low friction member. In that case, it is easy to suppress abrasion between the band 6 and the first hooking portion 34 when the pulling ends (first pulling end 610 and second pulling end 620) of the band 6 described below are pulled.

(Seat back)
The seat back 4 supports the back of the occupant. The seat back 4 has a back pad 41, a back frame 42, a back lock 43, and a second hook portion 44. The back pad 41 constitutes the back surface of the seat back 4 and supports the back of the occupant to enhance the sitting comfort of the occupant. The back frame 42 forms the skeleton of the seat back 4. The back frame 42 has a hinge bracket 422.

The hinge bracket 422 is connected to the hinge bracket 322 of the cushion frame 32. For this connection, the hinge pin 5 can be used as described above. This connecting point serves as a rotation axis when the seat back 4 is folded on the seat cushion 3. The hinge bracket 422 is provided integrally with the side frame 421 of the back frame 42. The hinge bracket 422 has an insertion hole (not shown) through which the hinge pin 5 is inserted, a through hole (not shown) through which a shaft portion 431 that pivotally supports the back lock 43 is inserted, and an engagement protrusion 433 of the back lock 43. Engagement holes 423 (to be described later) are formed. The engagement hole 423 is formed so that the engagement protrusion 433 can be rotated within a predetermined range.

The back lock 43 fixes the back frame 42 to the cushion frame 32 and releases this fixation. This fixing is performed so that an occupant can sit on the seat cushion 3. That is, the seat back 4 is set upright with respect to the seat cushion 3. The back lock 43 is located rearward of the second hooking portion 44 of the seat back 4. The back lock 43 of this example has a hook portion 432 and an engagement protrusion 433, and is rotatably provided with a shaft portion 431 fixed to the rear end of the hinge bracket 422 as a fulcrum. The configurations of the hook portion 432 and the engagement protrusion 433 are similar to those of the hook portion 332 and the engagement protrusion 333 of the floor lock 33 described above.

The hook portion 432 engages with the back striker 35. The back striker 35 is provided at the rear end of the hinge bracket 422 of the seat cushion 3. The hook portion 432 is formed in an L shape, and extends downward and forward and upward and forward of the back lock 43. The engagement protrusion 433 is rotatably fitted in an engagement hole 423 provided in the hinge bracket 422. The engagement protrusion 433 is formed in an L shape, and is formed in an L shape extending above the back lock 43 and toward the inside of the seat 2.

The rotation range of the back lock 43 is between the lock position (FIG. 2) where the back frame 42 is fixed to the cushion frame 32 and the unlock position (FIG. 3) where the back frame 42 is released from the cushion frame 32. is there. The lock position of the back lock 43 is a position where the hook portion 432 is rotated forward (the engagement protrusion 433 is rearward), and the unlock position is that the hook portion 432 is rotated rearward (the engagement protrusion 433 is forward). It is the moved position. The back lock 43 is constantly urged to the lock position by a torsion spring (not shown) or the like (FIG. 2). A fixed end of the band 6 (a first fixed end 614 of the first band 61) described later is connected to a rear end of the back lock 43.

The second hooking portion 44 hooks second intermediate portions 612 and 622 (described later) of the band 6. The second hooking portion 44 is integrally provided above the back lock 43 in the hinge bracket 422. The arrangement position of the second hooking portion 44 is behind the back lock 43. The second hooking portion 44 of this example projects from the side frame 421 toward the outside of the seat 2 (front side of the plane of FIG. 2) so as to be exposed to the outside of the back pad 41. Therefore, the band 6 (second intermediate portions 612, 622) is arranged so as to be arranged on the side of the back pad 41. The second hooking portion 44 may project from the side frame 421 toward the inside of the seat 2 (back side in the plane of FIG. 2) so as to be provided inside the back pad 41. In that case, the band 6 (the second intermediate portions 612 and 622) is arranged so as to penetrate the back pad 41. The second hooking portion 44 can be configured similarly to the first hooking portion 34.

[band]
The band 6 folds the seat back 4 on the seat cushion 3 by being pulled by the operator to the rear of the seat 2. If the band 6 is kept pulled, the seat back 4 can be kept folded on the seat cushion 3. Therefore, when the seat 2 with the seat back 4 folded on the seat cushion 3 is rotated forward, the seat back 4 may be separated from the seat cushion 3 without the operator pressing the seat back 4 by hand. Can be suppressed.

The band 6 of this example has a first band 61 and a second band 62. The first band 61 has a first pulling end 610, a first intermediate portion 611, a second intermediate portion 612, a first extending portion 613, and a first fixed end 614. The first band 61 is formed in a series from the first pulling end 610 to the first intermediate portion 611, the second intermediate portion 612, and the first extending portion 613, and the first fixed end 614. Similarly, the second band 62 has a second pulling end 620, a first intermediate portion 621, a second intermediate portion 622, a second extending portion 623, and a second fixed end 624. The second band 62 is formed in a series from the second pulling end 620 through the first intermediate portion 621, the second intermediate portion 622, and the second extending portion 623 to the second fixed end 624. The first band 61 and the second band 62 are different in the routing positions of the first extending portion 613 and the second extending portion 623 and the fixing targets of the first fixed end 614 and the second fixed end 624. Except for the above, the configuration is the same, and the same routing route is provided. The actual bands 61 and 62 are in contact with each other in a region extending from the first tension end 610 and the second tension end 620 to the second intermediate portions 612 and 622. However, for convenience of description, in FIGS. The interval between 61 and 62 is exaggerated. The band 6 may further include a third band 63 (shown by a chain double-dashed line in FIG. 2) described later. For convenience of description, the third band 63 is omitted in FIGS. 3 to 5.

(First tension end/Second tension end)
The first pulling end 610 and the second pulling end 620 are pulled out to the rear of the seat 2 and pulled by the operator. The pull-out position of the first pulling end 610 and the second pulling end 620 is the rear end of the seat cushion 3 in this example. The first pulling end 610 and the second pulling end 620 are connected to each other. A strap 7 that makes it easier for an operator to pull the first pulling end 610 and the second pulling end 620 is attached to a loop formed by connecting the first pulling end 610 and the second pulling end 620. Is preferred. The strap 7 has a shaft portion 71 provided in the loop, and an operation portion 72 fixed to the shaft portion 71, extending rearward from the shaft portion 71, and operated by an operator. The shaft portion 71 can have the same configuration as the first hook portion 34 and the like. The operation portion 72 is formed in a loop shape.

(First middle part/second middle part)
The first intermediate portions 611 and 621 are folded back by the first hooking portion 34 of the seat cushion 3 from the first pulling end 610 side toward the fixed end side. The second intermediate portions 612 and 622 are folded back by the second hooking portion 44 of the seat back 4 from the first intermediate portions 611 and 621 side toward the first fixed end 614 side and the second fixed end 624.

(First extension part, first fixed end)
The first extending portion 613 of the first band 61 extends from the second intermediate portion 612 toward the back lock 43 to which the first fixed end 614 is fixed. That is, the first extending portion 613 extends rearward from the second hooking portion 44. The first fixed end 614 of the first band 61 is a portion fixed to the seat back 4. The first fixed end 614 of this example is fixed to the rear of the second hook portion 44 of the seat back 4. Specifically, the first fixed end 614 is fixed to the rear side of the shaft portion 431 of the back lock 43.

(Second extension part, second fixed end)
The second extending portion 623 of the second band 62 extends from the second intermediate portion 622 toward the floor lock 33 to which the second fixed end 624 is fixed. That is, unlike the first extending portion 613, the second extending portion 623 extends toward the front of the second hooking portion 44. In the present example, the second fixed end 624 of the second band 62 is fixed to the floor lock 33 in front of the second hook portion 44.

The third band 63 is for pulling only the first band 61 (shown by a two-dot chain line in FIG. 2). That is, the third band 63 is for folding the seat back 4 on the seat cushion 3. The third band 63 has a third pull end 630 that is pulled out to the rear of the seat 2 and pulled by the operator, and a third fixed end 631 that is fixed midway in the first band 61. Similar to the first pulling end 610 of the first band 61, the pull-out position of the third pulling end 630 is the rear end of the seat cushion 3 in this example. The tip of the third pulling end 630 is formed in a loop shape. The third fixed end 631 is fixed between the first pulling end 610 of the first band 61 and the first intermediate portion 611. This fixing can be performed by sewing or the like.

[behavior]
With reference to FIGS. 2 to 5, the behavior of the band 6 in the seat structure 1 of this example based on the pulling operation will be described.

When the strap 7 is pulled backward by the operator and the first pulling end 610 of the first band 61 and the second pulling end 620 of the second band 62 are pulled backward, the first fixed end 614 of the first band 61 is pulled. Rotates the back lock 43 from the lock position (FIG. 2) to the unlock position (FIG. 3). On the other hand, the second fixed end 624 of the second band 62 does not rotate the floor lock 33 from the lock position to the unlock position. The tensile force of the operator acts on the first fixed end 614 and the second fixed end 624. The first fixed end 614 is located below and behind the second hooking portion 44 of the seat back 4. Therefore, the tensile force acting on the first fixed end 614 is a direction in which the hook portion 432 is rotated rearward (the engagement protrusion 433 is forward), that is, a direction in which the hook portion 432 of the back lock 43 is removed from the back striker 35. Act on. On the other hand, the second fixed end 624 is located below the second hooking portion 44, but is located forward. Therefore, the tensile force acting on the second fixed end 624 rotates the engagement protrusion 333 to the rear side (the hook portion 332 is on the front side), that is, in the direction in which the hook portion 332 of the floor lock 33 is engaged with the floor striker 80. Let The back lock 43 is displaced to the unlock position, so that the length of the first extending portion 613 of the first band 61 (the distance between the second intermediate portion 612 and the first fixed end 614) is shortened. The first pulling end 610 and the second pulling end 620 are connected. Therefore, by pulling the strap 7 backward, the first band 61 slides on the shaft 71 of the strap 7 toward the second band 62, and the shaft 71 of the strap 7 is displaced rearward. As a result, the first band 61 does not loosen.

When the back lock 43 is unlocked and the strap 7 is pulled further rearward by the operator, the first band 61 and the second band 62 fold the seat back 4 on the seat cushion 3 (FIG. 4 ). This is because the first band 61 and the second band 62 are hooked on the second hooking portion 44, and the seat back 4 is tilted forward by the pulling of the first band 61 and the second band 62. The first fixed end 614 maintains the unlocked state of the back lock 43 and the second fixed end 624 maintains the locked state of the floor lock 33 in the process of rotating the seat back 4. In the state before the seat back 4 is rotated, the second hooking portion 44 is located above the first fixed end 614 and the second fixed end 624 (FIG. 3 ). The second intermediate portion 612 of the first band 61 and the second intermediate portion 622 of the second band 62 are folded back by the second hooking portion 44. This turn-back direction is a direction from the second hooking portion 44 to the first hooking portion 34 located on the lower front side thereof. Therefore, the pulling force of the operator acts in a direction of bringing the second hooking portion 44 (seat back 4) closer to the first hooking portion 34 (seat cushion 3) by both the second intermediate portions 612 and 622. As a result, the seat back 4 pivots forward with the hinge pin 5 as a rotation axis and is folded onto the seat cushion 3. At this time, on the second band 62, the hook portion 332 is rotated rearward (the engagement protrusion 333 is forward) by the second fixed end 624, that is, in the direction in which the hook portion 332 of the floor lock 33 is removed from the floor striker 80. It does not exert enough pulling force. This is because the biasing force that biases the floor lock 33 to the lock position by the torsion spring is large. In addition, the position of the second fixed end 624 is located rearward of the hinge pin 5 of the rotating shaft. Therefore, since the seat back 4 is folded on the seat cushion 3, the length of the second extending portion 623 of the second band 62 (the distance between the second intermediate portion 622 and the second fixed end 624) increases. Is. By pulling the strap 7 rearward, the first band 61 slides on the shaft portion 71 of the strap 7 toward the second band 62, and the shaft portion 71 of the strap 7 is displaced rearward. As a result, the first band 61 and the second band 62 do not sag.

When the operator pulls the strap 7 further rearward while the seat back 4 is folded on the seat cushion 3, the second fixed end 624 rotates the floor lock 33 from the locked position to the unlocked position (Fig. 5). At this time, the first fixed end 614 maintains the unlocked state of the back lock 43. The second hooking portion 44 is moved to a position ahead of the floor lock 33 by folding the seat back 4. Therefore, the tensile force acting on the second fixed end 624 is the direction in which the engagement protrusion 333 is rotated forward (the hook portion 332 is rearward), that is, the hook portion 332 of the floor lock 33 is removed from the floor striker 80. Act on. When the floor lock 33 is displaced to the unlock position, the length of the second extending portion 623 is shortened. By pulling the strap 7 rearward, the second band 62 slides on the shaft 71 of the strap 7 toward the first band 61, and the shaft 71 of the strap 7 is displaced rearward. As a result, the second band 62 does not sag.

When the strap 7 is pulled upward and forward by the operator, the rotating mechanism 9 (FIG. 1) provided at the front end of the seat 2 in a state where the seat back 4 is kept folded on the seat cushion 3. It rotates forward with the shaft portion of as a rotation axis. As the rotation mechanism 9, a known one can be used. Then, the seat 2 is stored in the foot area (shown by the chain double-dashed line in FIG. 1). Alternatively, when the strap 7 is pulled forward by the operator, the seat 2 translates forward while the seat back 4 remains folded on the seat cushion 3.

When the back lock 43 is rotated to the unlock position and the seat back 4 is folded on the seat cushion 3, the operator pulls the third pulling end 630 of the third band 63, not the first band 61, backward. You may be asked. In that case, the third fixed end 631 of the third band 63 pulls only the first band 61 rearward. The behavior at that time is as described above. When the seat back 4 is folded on the seat cushion 3, the operator pulls the second band 62 backward to unlock the floor lock 33 and rotate the seat 2 forward.

[Action effect]
In the seat structure 1 of the present embodiment, by pulling the strap 7, the back lock 43 is released, the seat back 4 is folded on the seat cushion 3 and the folded state is maintained, the floor lock 33 is released, and the seat 2 is released. The forward rotation work can be performed in that order in series. In particular, when the seat 2 is rotated forward, the operator pulls the first pulling end 610 and the second pulling end 620 so that the seat back 4 can be kept folded on the seat cushion 3. Therefore, even if the reclining mechanism is not provided, the operator can suppress the separation of the seat back 4 from the seat cushion 3 without pressing the seat back 4 by hand. Therefore, the pivoting work of the seat 2 can be easily performed.

The present invention is not limited to these examples, but is defined by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

For example, one band that is continuous from the pulling end to the second intermediate portion is formed, and the first intermediate portion is branched into two bands, that is, the first extending portion and the second extending portion. The second fixed end may be fixed to the back lock and the floor lock.

Further, the band is composed of one band having a pulling end, a first intermediate portion and a fixed end, and the fixed end is not fixed to the back lock but fixed to the second hook portion of the seat back. It may have been done. In this case, the operator may separately release the back lock and floor lock. Even in this case, it is possible to fold the seat back on the seat cushion and maintain the folded state of the seat back by pulling the band.

1 Seat structure 2 Seat 3 Seat cushion 31 Cushion pad 32 Cushion frame 321 Side frame 322 Hinge bracket
323 Engagement hole 33 Floor lock 331 Shaft part 332 Hook part 333 Engagement protrusion 334 Convex part 34 First hooking part 35 Back striker 4 Seat back 41 Back pad 42 Back frame 421 Side frame 422 Hinge bracket
423 Engagement hole 43 Back lock 431 Shaft part 432 Hook part 433 Engagement protrusion 44 Second hooking part 5 Hinge pin 6 Band 61 First band 610 First pulling end 611 First intermediate part 612 Second intermediate part 613 First extension Installation portion 614 First fixed end 62 Second band 620 Second tension end 621 First intermediate portion 622 Second intermediate portion 623 Second extended portion 624 Second fixed end 63 Third band 630 Third tension end 631 Third fixed Edge 7 Strap 71 Shaft 72 Operation part 8 Rear floor panel 80 Floor striker 9 Rotation mechanism

Claims (2)

A seat having a seat cushion that is a seating surface of the occupant and a seat back that supports the occupant's back
A band for folding the seat back on the seat cushion by pulling the seat back,
The band is
A pulling end that is pulled out to the rear of the seat and pulled by the operator,
A fixed end fixed to the seat back,
A seat structure having a first intermediate portion folded back from the pulling end side toward the fixed end side by the seat cushion. The sheet is
A back lock having a lock position for fixing the seat back so that the seat back can be seated and an unlock position for releasing the fixation;
A floor lock having a lock position for fixing the seat cushion to a floor below the seat cushion and an unlock position for releasing the fixation;
The band is
A second intermediate portion that is folded back from the first intermediate portion side toward the fixed end side above the fixed end in the seat back,
A first extending portion extending from the second intermediate portion toward the back lock where the fixed end is provided;
A second extending portion extending from the second intermediate portion toward the floor lock,
Displacement of the back lock to the unlock position by pulling the pull end,
After the back lock is unlocked, further pulling of the pulling end sequentially folds the seat back onto the seat cushion and displaces the floor lock to the unlock position. Seat structure described.

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