JP5222041B2 - Retractable vehicle seat device - Google Patents

Description

  The present invention relates to a retractable vehicle seat device.

Patent Document 1 discloses a retractable vehicle seat device.
In Patent Document 1, a seat installation surface and a storage recess located behind the seat installation surface are formed on the floor surface in the vehicle, and both ends of the link member are attached to the seat portion of the seat and the bracket fixed to the vehicle floor surface. It is connected via a hinge mechanism. Therefore, the sheet can rotate between the storage position stored in the storage recess and the use position placed on the sheet installation surface.
Further, the hinge mechanism between the bracket and the lower end portion of the link member is provided with a torsion coil spring, and this torsion coil spring is elastically deformed when the seat is located at the retracted position, thereby moving the link member forward. Stores energy for energizing rotation. When the passenger moves the seat located at the retracted position forward, the elastic deformation amount (the energy) of the torsion coil spring gradually decreases and tries to return to the free state. Thus, since the rotational biasing force of the torsion coil spring becomes an auxiliary rotational force when the seat is rotated toward the use position, the passenger can rotate the seat to the use position with a small force. .
JP 2005-263007 A

However, since the rotational urging force by the torsion coil spring reaches the link member until the sheet reaches the use position, the sheet may collide with the sheet installation surface violently when the sheet reaches the use position.
Further, when starting to return the seat located at the use position to the retracted position, the rotational biasing force of the torsion coil spring becomes a damper force for the rotational movement of the seat. Therefore, a large force is required when starting to return the seat from the use position to the storage position.

  It is an object of the present invention to perform an initial rotation operation of a seat positioned at one of a storage position and a use position on the other side with a small force, and the seat that reaches the storage position and the use position is a vehicle. An object of the present invention is to provide a retractable vehicle seat device capable of preventing a violent collision with a floor surface.

  The retractable vehicular seat device of the present invention rotates both end portions of the front and rear link members in the left-right direction on the vehicle floor surface and the seat portion of the seat provided with the seat installation surface and the storage recess that are displaced from each other in the front-rear position. A retractable vehicle that is connected via a hinge mechanism that is rotatable about an axis, and that is capable of rotating the seat between a use position placed on the seat installation surface and a storage position stored in the storage recess. 1st bracket which has a 1st latching | locking part and a 2nd latching | locking part with which at least 1 said hinge mechanism was fixed to the at least one edge part of the said link member, and the said vehicle floor A second bracket fixed to at least one of the surface and the seat portion and capable of rotating relative to the first bracket and having a support portion, and between the first bracket and the second bracket. A torsion coil spring (SP1) having an axis is disposed, one end of the torsion coil spring is engaged with the support portion so as not to rotate about the axis of the torsion coil spring, and the other end is engaged with the end The seat is positioned between the first locking portion and the second locking portion so as to be rotatable about an axis, and the seat is positioned between a predetermined first intermediate position between the storage position and the use position and the storage position. When the other end portion of the torsion coil spring is in contact with the first locking portion, the torsion coil spring elastically urges the seat to rotate toward the use position. And when the seat is positioned between a predetermined second intermediate position that is closer to the use position than the first intermediate position and the use position, the other of the torsion coil springs When the end portion comes into contact with the second locking portion該捻Ri coil spring is characterized by generating an elastic force for urging the rotation of the sheet in the storage position.

According to the present invention, when the sheet is positioned between the retracted position and the first intermediate position, the torsion coil spring generates an elastic force that urges the sheet to rotate toward the use position. Accordingly, the sheet positioned at the storage position can be rotated and moved to the first intermediate position with a small force. On the other hand, when the seat is moved from the first intermediate position side to the retracted position, the rotational biasing force of the torsion coil spring functions as a damper, so that it is possible to prevent the seat from colliding with the vehicle floor.
Further, when the sheet is positioned between the second intermediate position and the use position, the torsion coil spring generates an elastic force that urges the sheet to rotate toward the storage position. Therefore, the sheet positioned at the use position can be rotated and moved to the second intermediate position with a small force. On the other hand, when the seat is moved from the second intermediate position side to the use position, the rotational biasing force of the torsion coil spring functions as a damper, so that it is possible to prevent the seat from colliding with the vehicle floor.
Further, when the seat is positioned between the first intermediate position and the second intermediate position, the torsion coil spring is brought into a free state by being separated from the first locking portion and the second locking portion. Therefore, compared with the case where the biasing force of the torsion coil spring suddenly changes from the front to the rear (or from the rear to the front), it is difficult for the passenger who rotates and moves the seat to feel uncomfortable.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, the front-rear and left-right directions are based on the directions described in FIG. 1, FIG. 2, FIG. 6, and FIG.
As shown in FIGS. 1 and 2, the floor 11 in the vehicle 10 includes a seat installation surface 12, a seat installation surface 13, and a storage recess located immediately after the rear seat installation surface 13. 14 is provided.

The retractable sheet device 20 that is the second row of sheets is a sheet that can be stored in the storage recess 14 and can be placed on the sheet setting surface 13, and its specific structure is as follows.
The retractable seat device 20 includes a seat portion 21, a backrest portion 22 having a lower end portion thereof rotatably connected to a rear end portion of the seat portion 21 via a left-right rotation shaft, and an upper end portion of the backrest portion 22. And a head support portion 23 whose lower end portion is rotatably connected via a rotation shaft in the left-right direction. The backrest 22 rotates between an upright position (position in FIG. 1) that is substantially orthogonal to the seat 21 and a folding position (position in FIGS. 3 to 6) that is substantially parallel to the seat 21. The head support portion 23 can be set in an upright position (position in FIG. 1) that is substantially orthogonal to the backrest portion 22, and a folding position (in FIGS. 3 to 5) that is substantially parallel to the backrest portion 22. Position).

Two strikers 17F project in the vicinity of the front end portion of the seat installation surface 13 as a pair of left and right, and two strikers 17R project in the vicinity of the rear end portion of the seat installation surface 13 as a pair of left and right.
As shown in FIGS. 3 to 5, one striker 18 projects from the central portion of the bottom surface 16 of the storage recess 14. A metal front bracket 25 is fixed to the center of the front wall 19 of the storage recess 14 in the left-right direction, and the lower end of the metal front link member 27 extends to the front bracket 25 in the left-right direction. 26 is rotatably supported. The front link member 27 can rotate around the rotation axis 26 between a front rotation end position (see FIG. 5) and a rear rotation end position (see FIG. 3) that is substantially parallel to the bottom surface 16. As shown in FIG. 2, a metal fixing bracket 29 is fixed to a substantially central portion of a bottom surface (upper surface) of a bottom space (not shown) formed at the bottom of the retractable seat device 20. The upper end portion of the front link member 27 is rotatably connected to a rotary shaft 30 extending in the left-right direction.

A metal base member (second bracket) 28 having a substantially rectangular shape in plan view is fixed near the front end of the bottom surface 16 of the storage recess 14. As shown in FIGS. 6 and 7, a pair of support holes (support portions) 28 b are formed as through holes in the vicinity of the left and right ends of the rear wall 28 a formed at the rear edge of the base member 28. Further, support members made up of a pair of left and right rear brackets (second brackets) 31 are fixed to the upper surface of the base member 28 as two sets of left and right.
A metal connection bracket (first bracket) 34 is located between the pair of left and right rear brackets 31. Since the metal rotating shaft 32 extending between the left and right rear brackets 31 extending in the left-right direction passes through the left and right side walls 34a of the connection bracket 34 so as to be relatively rotatable, the connection bracket 34 is rotatably connected to the rear bracket 31 via the rotary shaft 32. As shown in FIGS. 6 and 7, the right side wall 34a of the left connection bracket 34 and the left side wall 34a of the right connection bracket 34 are provided with a substantially rectangular locking hole 34b.
Further, winding portions SP1 of a torsion coil spring SP made of metal are positioned around the left and right rotating shafts 32, respectively. The left and right torsion coil springs SP each include a pair of first locking end SP2 and second locking end SP3, and the first locking end SP2 is fitted in the support hole 28b of the base member 28. The second locking end SP3 is fitted in the locking hole 34b of the connection bracket 34. Since the first locking end SP2 is fitted into the support hole 28b with almost no gap, the first locking end SP2 is fixed to the support hole 28b. On the other hand, as shown in FIGS. 6 and 7, since the dimension of the locking hole 34b is larger than the cross-sectional diameter of the second locking end SP3, the second locking end SP3 is formed in the corresponding locking hole 34b. Relative movement is possible.
The left and right connection brackets 34 are respectively fixed to the lower ends of a pair of left and right rear link members 33 made of metal. Further, the lower ends of a pair of left and right rear legs (rear link members) 35 made of metal are fixed to the upper ends of the left and right rear link members 33, respectively, and are located near the lower end of the front surface of the rear legs 35. Has a striker entry groove 36 formed therein. Further, although not shown in the drawings, on the inner side surfaces of the left and right rear legs 35, there is provided a known rear lock mechanism that includes a hook and a pole that can rotate together and can be engaged with and disengaged from the striker 17R.

A connecting rotary member 38 positioned in the bottom space is rotatably connected to upper ends of the left and right rear legs 35 positioned in the bottom space of the seat portion 21 via a rotation shaft 37 extending in the left-right direction. Yes. Further, the rear end portion of the linkage link member 41 extending in the front-rear direction is rotatably connected to the left and right connection rotation members 38 via a rotation shaft 40 extending in the left-right direction. The left and right link members 41 are located in the bottom space, and the left and right rotating shafts 40 are rotatably supported by a fixed bracket 42 fixed to the bottom surface of the bottom space, as shown in FIG.
The lower end of the rear link member 33 is rotatably supported by the rear bracket 31 by the rotary shaft 32, and the upper end of the rear leg 35 is fixed to the fixed bracket via the rotary shaft 37, the connecting rotary member 38, and the rotary shaft 40. 42, the rear link member 33 and the rear leg 35 are located between the front rotational end position (see FIG. 5) and the rear rotational end position (see FIG. 3) that is substantially parallel to the bottom surface 16. Can be rotated.
As shown in the drawing, the front end portions of the left and right link members 41 are connected to the vicinity of the upper end portion of a metal front leg 45 via a rotating shaft 44 extending in the left-right direction. The left and right front legs 45 are coupled to each other by a connecting member (not shown) extending in the left-right direction, and the upper end portions thereof are located in the bottom space. Further, striker engagement grooves 46 are recessed in the lower end portions of the left and right front legs 45. A pair of left and right fixing brackets 47 (see FIG. 2) is fixed in the vicinity of the front end portion of the bottom surface of the bottom space, and the upper ends of the left and right front legs 45 are connected via a rotating shaft 48 extending in the left-right direction. Each part is rotatably supported. Since the left and right front legs 45 are linked to the left and right rear legs 35 via the left and right linkage links 41 and the connecting rotation member 38, the rear legs 35 (and the rear link members 33) and the front legs 45 rotate in synchronization. To do. That is, when one of the rear leg 35 and the front leg 45 is positioned in the storage position (see FIG. 3) stored in the bottom space of the seat portion 21, the other is positioned in the storage position stored in the bottom space. When one of the leg 35 and the front leg 45 is positioned at an orthogonal position (see FIG. 6) that is substantially orthogonal to the seat portion 21, the other is also positioned at an orthogonal position that is approximately orthogonal to the seat portion 21.
Although not shown in the drawings, on the inner side surfaces of the left and right rear legs 35, there is provided a known front lock mechanism that includes a hook and a pole that can rotate together and can be engaged with and disengaged from the striker 17F.

As shown in FIGS. 3 to 5, a grip member 52 is rotatably provided on the right side surface of the backrest portion 22 via a rotation shaft 53 extending in the left-right direction. The holding member 52 is rotatable between a non-operation position indicated by a solid line in FIGS. 3 and 5 and an operation position indicated by a solid line in FIG. 4 and indicated by a virtual line in FIGS.
A hook member 57 is rotatably supported by a fixed bracket 55 fixed to the bottom surface of the bottom space of the seat portion 21 via a rotation shaft 56 extending in the left-right direction. The hook member 57 is a member that can be engaged with and disengaged from the striker 18 projecting from the recess 14 for storage. The hook member 57 can be engaged with the striker 18 (the position in FIG. 3), and can be engaged with the striker 18. It can rotate between the engagement positions (the positions in FIGS. 4 and 5) and is urged to rotate toward the engagement position by the rotation urging force of the spring means (not shown). Further, one end of an operation wire (not shown) is connected to the hook member 57, and the other end of the connection wire is connected to the gripping member 52. Therefore, when the grip member 52 is located at the non-operation position, the hook member 57 is located at the engagement position, and when the grip member 52 is located at the operation position, the hook member 57 is located at the non-engagement position.

  As shown in FIG. 1, a lock release switch SW is provided on the right side surface of the seat portion 21. The lock release switch SW is slidable between a lock allowable position shown in FIG. 1 and a lock release position (not shown), and is always held at the lock allowable position by the biasing force of a spring means (not shown). Yes. The lock release switch SW allows the rear lock mechanism and the front lock mechanism to be locked when positioned at the lock allowable position, and unlocks the rear lock mechanism and the front lock mechanism when positioned at the lock release position. Put it in a state.

Next, the operation of the retractable seat device 20 configured as above will be described.
When the backrest 22 and the head support 23 are in the folded position, and the front link member 27, the rear link member 33, and the rear leg 35 are positioned at the rear rotation end position, the seat portion 21, the backrest As shown in FIG. 3, the seat body including the portion 22 and the head support portion 23 is located at the storage position where the entire seat body is located in the storage recess 14. Furthermore, since the hook member 57 located at the engagement position engages with the striker 18, the seat part 21, the backrest part 22, and the head support part 23 cannot be moved from the storage position.
At this time, as shown in FIGS. 6 and 8, the second locking end SP3 of the torsion coil spring SP is engaged with the first locking portion 34c which is the front edge (upper edge) of the locking hole 34b. Therefore, the torsion coil spring SP is in an elastically deformed state in which the first locking end SP2 and the second locking end SP3 approach each other as compared to the free state (the state shown in FIG. 9). Therefore, energy for rotating the connection bracket 34 (rear link member 33) forward with respect to the rear bracket 31 is accumulated in the torsion coil spring SP in this state.
When the passenger grips the grip member 52 that has been located at the non-operation position and rotates the grip member 52 toward the operation position indicated by the phantom line in FIG. 3, the hook member 57 located at the engagement position is disengaged. Since the hook member 57 and the striker 18 are disengaged, the front link member 27 and the rear link member 33 (and the rear leg 35) can be rotated forward. Accordingly, when the passenger moves the grip member 52 forward and upward, the seat portion 21, the backrest portion 22 and the head support portion 23 of the link mechanism including the front side link member 27, the rear side link member 33, and the rear leg 35 are provided. It rotates forward according to the rotation trajectory.
Then, as the amount of forward rotation of the rear link member 33, the connection bracket 34, and the rear leg 35 with respect to the rear bracket 31 increases, the second locking end SP3 moves from the first locking end SP2. Since it gradually moves forward (upward) (trying to return to the free state), the energy (elastic force) stored in the torsion coil spring SP is applied to the connection bracket 34. Thus, since the elastic force of the torsion coil spring SP becomes an auxiliary force for rotating the seat portion 21, the backrest portion 22, and the head support portion 23 forward, the passenger (as compared to the case without the torsion coil spring SP). It is possible to rotate the seat part 21, the backrest part 22 and the head support part 23 forward with a small force.

  The auxiliary force by the torsion coil spring SP is such that the seat portion 21, the backrest portion 22 and the head support portion 23 are in a first intermediate position (a position slightly closer to the storage position than the neutral position shown in FIG. 4; not shown). The “neutral position” is a position at which the rotational direction of the retractable seat device 20 is switched when the retractable seat device 20 is not subjected to the rotational biasing force of the torsion coil spring SP and the rotational force of the passenger. ) Gradually decreases, and disappears when the first intermediate position is reached (when the first intermediate position is reached, the torsion coil spring SP becomes free). When the seat portion 21, the backrest portion 22 and the head support portion 23 exceed the first intermediate position, the second locking end SP3 of the torsion coil spring SP is locked into the locking hole as shown in FIG. The connection bracket 34 is in a free state away from the first locking portion 34c of 34b (and the second locking portion 34d which is the rear edge portion (lower edge portion)). This free state is a second intermediate position (not shown) in which the seat portion 21, the backrest portion 22 and the head support portion 23 are located slightly beyond the neutral position shown in FIG. ) Continue until just before. That is, while the seat portion 21, the backrest portion 22, and the head support portion 23 are located between the first intermediate position and the second intermediate position, the rotational biasing force is applied from the torsion coil spring SP to the connection bracket 34. It doesn't reach.

When the seat portion 21, the backrest portion 22 and the head support portion 23 reach the second intermediate position, as shown in FIG. 10, the second locking end SP3 of the torsion coil spring SP is locked into the locking hole. Since the second locking portion 34d of 34b is in contact with the seat portion 21, the backrest portion 22 and the head support portion 23 approach the use position, the second locking end SP3 is moved to the first locking portion 34d. The amount of elastic deformation of the torsion coil spring SP gradually increases from the end SP2 toward the front. Therefore, while the seat part 21, the backrest part 22 and the head support part 23 are rotationally moved from the second intermediate position to the use position, the seat part 21, the backrest part 22 and the head support part 23 from the torsion coil spring SP. Is given a damper force. In addition, since the damper force gradually increases as it approaches the use position, the striker engagement groove 46 of the front leg 45 when the seat portion 21, the backrest portion 22 and the head support portion 23 reach the use position. The striker 17F slowly enters the striker 17R, and the striker 17R slowly enters the striker entry groove 36 of the rear leg 35.
When the striker 17F enters the striker engagement groove 46, the front lock mechanism provided on the front leg 45 locks the striker 17F, and when the striker 17R enters the striker entry groove 36, the rear lock mechanism provided on the rear leg 35 causes the striker 17R. The seat portion 21, the backrest portion 22 and the head support portion 23 are held at the use positions. Therefore, if the grip member 52 is returned to the non-operation position after this, and the backrest 22 and the head support 23 are rotated to the upright position as shown in FIG. 1, the seat 21, the backrest 22 and the head The part support part 23 is in a state in which a passenger can be seated.

In order to return the seat part 21, the backrest part 22 and the head support part 23 to the retracted position shown in FIG. 3 from this state, the backrest part 22 and the head support part 23 are returned to the folding position and then the lock is allowed. The lock release switch SW located at the position is slid to the unlock position, and the front lock mechanism and the rear lock mechanism are shifted to the unlocked state. After that, if a backward moving force is applied to the backrest 22 (and the seat 21 and the head support 23) while rotating the gripping member 52 located at the non-operation position to the operation position, the seat 21, The backrest part 22 and the head support part 23 rotate backward according to the rotation trajectory of the link mechanism.
Then, as the amount of rearward rotation of the rear link member 33, the connection bracket 34, and the rear leg 35 with respect to the rear bracket 31 increases, the second locking end SP3 becomes closer to the first locking end SP2 side. Therefore, the energy (elastic force) stored in the torsion coil spring SP is applied to the connection bracket 34 as an auxiliary force. Therefore, the passenger can rotate the seat part 21, the backrest part 22, and the head support part 23 backward with a small force (compared to the case where there is no torsion coil spring SP). The assisting force due to the torsion coil spring SP gradually decreases as the seat portion 21, the backrest portion 22 and the head support portion 23 approach the second intermediate position, and reaches the second intermediate position. Disappear.
When the seat portion 21, the backrest portion 22 and the head support portion 23 exceed the second intermediate position, the second locking end SP3 of the torsion coil spring SP is connected to the locking hole 34b as shown in FIG. The connection bracket 34 is in a free state because it is separated from the second locking portion 34d (and the first locking portion 34c), and this free state means that the seat portion 21, the backrest portion 22 and the head support portion 23 are in the first state. Continue until just before reaching the middle position.
When the seat portion 21, the backrest portion 22 and the head support portion 23 reach the first intermediate position, as shown in FIG. 8, the second locking end SP3 of the torsion coil spring SP is in the locking hole 34b. Since the first locking portion 34c comes into contact, the second locking end SP3 becomes the first locking end as the seat portion 21, the backrest portion 22 and the head support portion 23 approach the retracted position. Further closer to the portion SP2, the amount of elastic deformation of the torsion coil spring SP gradually increases. Since the biasing force of the torsion coil spring SP acts as a damper force after the seat portion 21, the backrest portion 22 and the head support portion 23 exceed the first intermediate position in this way, the seat portion 21, the backrest portion The head 22 and the head support 23 rotate and move slowly to the storage position while decelerating. When the grip member 52 is returned to the non-operation position after the seat portion 21, the backrest portion 22 and the head support portion 23 reach the retracted position, the hook member 57 locks the striker 18, so the seat portion 21, the backrest portion 22 is restored. And the head support part 23 is hold | maintained in a storing position.

As described above, in the present embodiment, the retractable sheet device 20 positioned at the storage position can be rotated to the use position side with a small force, and the sheet positioned at the use position can be rotated toward the storage position side with a small force. It can be rotated.
Moreover, when the retractable seat device 20 is moved from the first intermediate position side to the retracted position, the rotational biasing force of the torsion coil spring SP functions as a damper. Can be prevented. Further, when the retractable seat device 20 is moved from the second use position side to the use position, the rotational urging force of the torsion coil spring SP functions as a damper, so the front leg 45 and the striker 17F, and the rear leg 35 and the striker. 17R does not collide violently. Therefore, these members can be reliably prevented from being damaged.
Furthermore, when the retractable seat device 20 is located between the first intermediate position and the second intermediate position, the torsion coil spring SP is in a free state, so that the biasing force of the torsion coil spring SP is from the front to the rear (or It is possible to make it difficult for a passenger who rotates the retractable seat device 20 to feel uncomfortable as compared to a case where the vehicle suddenly changes from rear to front.

Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment and can be implemented in various modes.
For example, a hole corresponding to the support hole 28b may be formed in the rear bracket 31.
Further, the present invention is applied to a hinge mechanism between the rear leg 35 and the connecting rotation member 38, a hinge mechanism between the front bracket 25 and the front link member 27, or a hinge mechanism between the front link member 27 and the fixed bracket 29. It is also possible to do. In addition, the present invention may be applied to only one hinge mechanism, or may be applied to all hinge mechanisms. Further, if a hole corresponding to the locking hole 34b is formed in one of the two relative rotating members constituting the hinge mechanism and a hole corresponding to the support hole 28b is formed in the other, the locking hole 34b It is free to form the corresponding hole and the hole corresponding to the support hole 28b.
Furthermore, U-shaped grooves and recesses that can be substituted for the support holes 28 b and the locking holes 34 b may be formed in the base member 28, the rear bracket 31, and the connection bracket 34. The base member 28, the rear bracket 31, and the connection bracket 34 are cut and raised, and one of the torsion coil springs SP is provided between the base member 28, the rear bracket 31 and the connection bracket 34 and the cut and raised portions. The end portion may be supported, or the other end portion may be positioned so as to be rotatable around the axis of the torsion coil spring SP between the main body portion and the cut and raised portion.
Further, the storage recess 14 is installed in front of the seat installation surface 13, and the seat portion 21, backrest portion 22 and head support portion 23 located at the storage position are rotated back to the use position. In addition, the seat portion 21, the backrest portion 22 and the head support portion 23 located at the use position may be rotated and moved forward to the storage position.
Furthermore, the front link member 27 may be a pair of left and right, or the rear link member 33 and the rear leg 35 may be one.

1 is a side view of a vehicle to which a retractable seat device according to an embodiment of the present invention is applied. It is a top view of the sheet | seat which showed typically the positional relationship of each link member and fixing bracket of a sheet | seat. It is a side view when a sheet | seat is located in a storing position. It is a side view when a sheet rotates further forward. It is a side view when a sheet | seat is located in a use position. It is the perspective view seen from back when the bracket of a fixing, a hinge mechanism, and the sheet | seat of a rear side link member are located in a storing position. It is a perspective view similar to FIG. 6 when a sheet | seat is located in a use position. It is a vertical side view of a base member, a connection bracket, and a torsion coil spring when a sheet is located at a retracted position. Fig. 9 is a longitudinal side view similar to Fig. 8 when the sheet is positioned in a neutral position. It is the vertical side surface similar to FIG. 8 when a sheet | seat is located in a use position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Floor surface 12 13 Seat installation surface 14 Storage recessed part 16 Bottom face of storage recessed part 17F 17R Striker 18 Strike 19 Front wall 20 of recessed part for storage Retractable seat apparatus 21 Seat part 22 Backrest part 23 Head support part 25 Front bracket 26 Rotating shaft 27 Front link member 28 Base member (second bracket)
28a Rear wall 28b Support hole (support part)
29 Fixed bracket 30 Rotating shaft 31 Rear bracket (second bracket)
32 Rotating shaft 33 Rear link member 34 Connection bracket (first bracket)
34a Side wall portion 34b Locking hole 34c First locking portion 34d Second locking portion 35 Rear leg (rear side link member)
36 striker entry groove 37 rotating shaft 38 connecting rotating member 40 rotating shaft 41 linkage link member 42 fixed bracket 44 rotating shaft 45 front leg 47 fixed bracket 48 rotating shaft 52 gripping member 53 rotating shaft 55 fixing bracket 56 rotating shaft 57 hook member SP torsion coil Spring SP1 Winding portion SP2 First locking end SP3 Second locking end SW Unlock switch

Claims (1)

Via a hinge mechanism capable of rotating both end portions of the front and rear link members around a rotation axis in the left-right direction, on the vehicle floor surface including the seat installation surface and the storage recessed portion shifted from each other in the front-rear position and the seat portion of the seat In the retractable vehicle seat device, wherein the seat is connected, and the seat can be rotated and moved between a use position placed on the seat installation surface and a storage position stored in the storage recess.
A first bracket having a first locking portion and a second locking portion, wherein the at least one hinge mechanism is fixed to at least one end of the link member; and the vehicle floor and the seat portion. A second bracket fixed to at least one of the first bracket and rotatable relative to the first bracket and having a support portion;
Between the first bracket and the second bracket, a torsion coil spring having a horizontal axis is disposed,
One end portion of the torsion coil spring is engaged with the support portion so as not to rotate about the axis of the torsion coil spring, and the other end portion is rotatable about the axis, and the first locking portion And between the second locking portion and
When the seat is located between a predetermined first intermediate position between the storage position and the use position and the storage position, the other end of the torsion coil spring is in the first locking portion. By making contact, the torsion coil spring generates an elastic force that urges the seat to rotate toward the use position,
When the seat is positioned between a predetermined second intermediate position that is closer to the use position than the first intermediate position and the use position, the other end of the torsion coil spring is 2. A retractable vehicular seat device, wherein the torsion coil spring generates an elastic force that rotationally biases the seat toward the retracted position by contacting the two engaging portions.

Images