JP4248997B2 - Retractable vehicle seat device - Google Patents

Description

  The present invention relates to a retractable vehicle seat device.

  A seat installation surface and a storage recess are provided side by side on the floor surface in the vehicle, and a seat having a seat cushion and a seat back is rotatable about a left-right axis with respect to the floor surface. A retractable vehicle seat device that can rotate between a seat use position installed on a seat installation surface and a storage position stored in a storage recess has been conventionally known (for example, Patent Document 1). ).

  In this retractable vehicle seat device, the upper ends of the front legs and the rear legs are pivotally attached to the seat cushion so as to be capable of relative rotation about a horizontal axis. The front leg of the pivot arm is fixed to the rear leg, and the base end of the pivot arm is pivotally attached to the vehicle floor so as to be relatively pivotable about a left-right axis, It can be rotated between the seat use position and the storage position. Further, a gas spring is attached between the rear leg and the seat cushion to urge the rear leg (rotating arm) and the seat cushion to increase the opening angle.

  When the retractable vehicle seat device having such a configuration is rotated between the seat use position and the storage position, if the seat cushion posture is not controlled at all, the seat cushion is moved to the floor by the urging force of the gas spring. As a result, the seat cushion will not be stable and the seat will not move smoothly.

In order to avoid such a situation, in Patent Document 1, both ends of the attitude control wire are fixed to the seat cushion and the storage recess. This posture control wire stretches straightly under the tension of the seat cushion and the storage recess while the seat moves between the seat installation surface and the storage recess, and the tension of the seat cushion is substantially horizontal due to the tension. To control.
Japanese Patent Application No. 2002-366073

  High accuracy is required for the position of the attitude control wire attached to the seat cushion and the storage recess. If the accuracy of the mounting position is lowered, problems such as the bottom surface of the seat cushion being largely exposed forward during the rotational movement of the seat and the bottom surface of the seat cushion colliding with the vehicle floor surface may occur. For this reason, the mounting operation of the attitude control wire at the time of mounting the retractable vehicle seat device to the vehicle floor is troublesome, and the mounting operation of the attitude control wire takes a lot of time.

  It is an object of the present invention to obtain a retractable vehicle seat device that can be easily attached to a vehicle floor surface by completing the mounting operation of the attitude control wire in the manufacturing process of the retractable vehicle seat device. Objective.

A retractable vehicle seat device according to the present invention is a retractable vehicle seat device that supports a single seat on a seat installation surface and a storage recess formed side by side on the front and back of a vehicle floor so as to be selectively movable. Both end portions are pivotally attached to the vehicle floor and the seat, respectively, and a seat use position where the seat is placed on the seat installation surface by the rotational movement and a storage position stored in the storage recess. Rotating arm that rotates and moves in between; when the rotating arm rotates between the sheet storage position and the sheet use position, the rotation arm urges the sheet in a direction that increases the opening angle with respect to the rotating arm. Urging means; the sheet is slackened when it is positioned at the sheet use position and the storage position, and is rotated by the force of the rotation urging means while rotating within a predetermined range between the sheet use position and the storage position. To control the attitude of the sheet against the force of the energization means, one end portion is supported by the sheet, and the sheet during rotation of the predetermined range is a portion other members and without contact except for the both end portions posture A control wire; and a floor fixing member that is formed as a separate member from the seat and the vehicle floor, and is fixed to the vehicle floor. One end of the rotating arm is provided on the floor fixing member. The other end of the attitude control wire is supported, and the seat, the rotating arm, the rotation biasing means, the attitude control wire, and the floor surface fixing member are unitized in a state before being mounted on the vehicle floor surface. .

  The rotating arm and the seat cushion further include a restricting means for restricting a maximum opening angle of the seat cushion, and the rotation biasing means biases the seat in a direction in which the opening angle with respect to the rotating arm becomes large even at the maximum opening angle. It is preferable to do this.

  As the rotation urging means, for example, a gas spring can be used.

  According to the present invention, the posture control wire is attached in the manufacturing process of the retractable vehicle seat device, so that, for example, the operation of the posture control wire can be confirmed before being attached to the vehicle floor. Therefore, the mounting operation of the retractable vehicle seat device on the vehicle floor can be easily performed.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 3, the floor surface 11 of the vehicle 10 to which the retractable vehicle seat device SA is attached has a seat installation surface 12 and a storage recess 13 positioned immediately after the seat installation surface 12. Is provided. Three strikers 14 and 15 project from the sheet installation surface 12. That is, a pair of rear strikers 14 provided side by side in the left-right direction at the rear portion of the seat installation surface 12 and one front striker 15 provided at the center in the left-right direction of the front portion of the seat installation surface 12.

As shown in FIG. 1, the seat S is a rear seat of the vehicle, and includes a seat cushion 20 that supports a seat occupant's buttocks and a seat back 21 that supports a back of the seat occupant. The seat back 21 includes a metal seat cushion frame 22 (see FIGS. 4 and 5) and a seat back frame (not shown).
As shown in FIGS. 4 and 5, the seat cushion frame 22, which is a constituent member of the seat cushion 20, includes a pair of left and right side frames 23, a front connecting member 24 that connects the front ends of the left and right side frames 23, The rod-like connecting pipe 25 that connects the rear ends of the side frames 23, the front connecting plate 26 that is installed between the upper surfaces of the front ends of the side frames 23, the front connecting plate 26, and the connecting pipe 25 are connected. A pair of left and right bar-shaped reinforcing members 27 is provided.

The rear end of the left side frame 23 and the left lower end of the seat back frame, and the rear end of the right side frame 23 and the right lower end of the seat back frame rotate in the left-right direction (not shown). The shaft is pivoted so as to be pivotable in the front-rear direction.
Further, in the seat S, there is provided an angle holding mechanism (not shown) that is always in a locked state and switches to an unlocked state when an open switch (not shown) is operated. When the angle holding mechanism is in the locked state, the rotation of the seat back 21 is restricted, and when the angle holding mechanism is in the unlocked state, the rotation of the seat back 21 is allowed. The seat back 21 is rotatable between a standing position shown by a solid line in FIGS. 3 and 1 and a folding position shown by an imaginary line in FIGS. 2 and 1, and the seat back 21 is moved to the standing position. If the release switch is not operated in this state, the seat back 21 is held in the standing position. On the other hand, when the release switch is operated, the angle holding mechanism is unlocked, so that the seat back 21 can be rotated toward the folding position.

  As shown in detail in FIG. 4, the left and right side frames 23 have a cylindrical shape facing in the front-rear direction, and a cylindrical base member 28 in which one side surface of the rear end portion is notched, and the base member 28. The auxiliary member 30 is configured to close the notch 29, and the auxiliary member 30 is joined to the notch 29 of the base member 28 by welding.

An opening 23a (see FIGS. 8 and 9) is formed in the lower surface of the rear end portion (the portion where the auxiliary member 30 is provided) of the left and right side frames 23, and further corresponds to the opening 23a of the base member 28. The striker entry grooves 28 a and 30 a into which the rear striker 14 can enter from below are formed at the position where the rear striker 14 enters from the lower position and the auxiliary member 30.
Further, a rotating shaft 31 facing in the left-right direction is provided between the rear end portion of the base member 28 and the opposing surface of the auxiliary member 30, and the rotating shaft 31 can be engaged with and disengaged from the rear striker 14. A hook 32 having a groove 32a and an arm portion 32b is pivotally attached.

  The hook 32 is rotatable between the unlock position shown in FIG. 8 and the lock position shown in FIG. The lower end of the link member 34 is pivotally attached to the hook 32 via a connecting pin 33 that faces in the left-right direction, and the end of the connecting pin 33 on the base member 28 side is formed at the rear end of the base member 28. The guide groove 28b is fitted into the substantially arc-shaped guide groove 28b. Further, a rotating piece 36 is pivotally attached to a rotating shaft 35 extending between the rear end portion of the base member 28 and the opposing surface of the auxiliary member 30 and facing in the left-right direction. The torsion spring 37 provided between the piece 36 and the rotary shaft 35 is always urged to rotate counterclockwise in FIGS. And the lower end part of this rotation piece 36 and the upper end part of the link member 34 are pivotally attached via the connection pin 38 which faces the left-right direction.

A pressed portion 36a protrudes from the upper end portion of the rotating piece 36, and the pressed portion 36a protrudes upward from an opening 23b formed in the upper surface of the rear end portion of the side frame 23 (FIG. 8). And FIG. 9). Further, as shown in FIGS. 2, 3, 8, and 9, a pressing portion 21a that can be engaged with and disengaged from the pressed portion 36a is formed at the lower end portion of the seat back frame. When the seat back 21 is in the standing position, the pressed portion 36a of the rotating piece 36 attached to the left and right side frames 23 and the pressing portion 21a of the left and right seat back frames are in an unengaged state ( When the seat back 21 is moved to the folding position, the left and right pressing portions 21a press the pressed portions 36a of the left and right rotating pieces 36 in the clockwise direction of FIGS. 8 and 9 (see FIGS. 3 and 9). 2 and 8).
Then, as described above, the pressing portion 21a, the striker entry grooves 28a and 30a, the guide groove 28b, the rotating shaft 31, the hook 32, the connecting pin 33, the link member 34, the rotating shaft 35, the rotating piece 36, the torsion spring 37, and The connecting pin 38 constitutes a rear side lock mechanism U1.

As shown in FIGS. 4, 11, and 12, a front end portion of a pair of left and right mounting plates 40 facing substantially in the front-rear direction is fixed to the center portion in the left-right direction of the front connecting member 24. A locking bracket 41 is fixed to the left and right mounting plates 40. The locking bracket 41 has a striker entry groove 42 into which the front striker 15 can enter from below. Further, a hook having an engaging groove 46a, an arm portion 46b, and an engaging portion 46c that can be engaged with and disengaged from the front striker 15 is provided on the rotating shafts 44 and 45 that protrude from the locking bracket 41 and face in the horizontal direction. 46 and a pawl 47 having an engaged portion 47a that can be engaged with and disengaged from the engaging portion 46c of the hook 46 are pivotally attached. The hook 46 can be rotated between the unlock position shown in FIG. 11 and the lock position shown in FIG. 12, and is constantly applied by the urging force of the torsion spring 48 provided between the hook 46 and the rotary shaft 44. It is urged to rotate toward the unlock position. Further, the pole 47 is always urged to rotate counterclockwise in FIGS. 11 and 12 by the urging force of a torsion spring 49 provided between the rotating shaft 45 and the pole 47. Further, the front end portion of the pulling wire W1 is fixed to the mounting portion 47b formed on the pole 47, and the rear end portion of the pulling wire W1 is linked to a lock release switch (not shown) provided on the seat S. Has been. The lock release switch can swing between the lock effective position and the lock release position, and is normally held at the lock effective position by the biasing force of a spring (not shown).
The front lock mechanism U2 is constituted by the mounting plate 40, the lock bracket 41 (the striker entry groove 42), the rotary shafts 44 and 45, the hook 46, the pole 47, the torsion springs 48 and 49, the pulling wire W1, and the lock release switch. Is configured.

Further, as shown in FIGS. 4 and 5, on the inner side surfaces of the left and right side frames 23, distal end portions of a pair of left and right rotating arms 50 facing substantially front-rear directions are inserted through the distal end portions. It is pivotally attached to a rotating shaft 50b that faces the left and right direction and is inserted through 50a. In addition, the respective base end portions of the left and right turning arms 50 are pivotally attached to a fixing bracket (floor surface fixing member) 52 via a rotation shaft 51 that faces in the left-right direction. As shown in FIGS. 2 and 3, a bracket 25a is fixed to the connecting pipe 25 in the side frame 23, and a rubber cushion material 25b is provided on the front surface of the bracket 25a. Further, an abutting member 50c that can be brought into contact with and separated from the cushion material 25b is provided on the rear surface of the rotating arm 50 in the side frame 23. The bracket 25a, the cushion material 25b, and the contact member 50c constitute a restricting means. The relative rotation angle (opening angle) between the rotation arm 50 and the seat cushion 20 is determined by the contact member 50c and the cushion material 25b. It is limited within a range smaller than the contact angle.
The left and right fixing brackets 52 are fixed to the left and right end portions of a connecting member (floor surface fixing member) 53 having a wire attachment portion 53a projecting from the left end portion thereof in the left-right direction. A pair of left and right mounting pieces 53 b project from the upper surface of the connecting member 53, and a storage position holding striker 54 is installed between the left and right mounting pieces 53.

  As shown in FIGS. 4 and 5, the front end portion of the cylinder 61 of the gas spring (rotating biasing means) 60 can be rotated around the left and right axis on the inner surface of the front end portion of the right side frame 23. The rear end portion of the rod 62 is pivotally attached to the middle portion of the right rotation arm 50 so as to be rotatable about a horizontal axis. The rod 62 of the gas spring 60 always protrudes from the cylinder 61 and urges the rotating arm 50 and the seat cushion 20 to rotate in a direction that increases the opening angle of both. Further, the gas spring 60 generates a rotation urging force even when the opening angle of the rotating arm 50 and the seat cushion 20 is maximized (that is, the rod 62 is urged in the protruding direction). ), Attached to the pivot arm 50 and the seat cushion 20.

  An attachment fitting W2a provided at one end of the attitude control wire W2 is pivotally attached to the wire attachment portion 53a of the connecting member 53 by a bolt 70 and a nut 71 so as to be rotatable about a left and right axis (see FIG. 7). A mounting bracket W2b provided at the other end of the attitude control wire W2 can be rotated around an axis in the left-right direction by a mounting pin 72 (see FIG. 5) protruding from the inner surface of the left side frame 23. It is pivotally attached.

As shown in FIG. 6, the retractable vehicular seat device SA having the above-described configuration is fixed to the front wall 13a of the retractable recess 13 with a bolt B, so that the floor surface of the vehicle 10 is secured. 11 is attached. When the retractable vehicle seat device SA is attached to the floor 11, the seat S is stored in the seat use position (the solid line in FIG. 1 and the position in FIG. 3) placed on the seat installation surface 12 and the storage recess 13. It is possible to rotate between the storage position (the position of the phantom line in FIG. 1 and the position in FIG. 2).
The relative rotation angle (opening angle) between the rotation arm 50 and the seat cushion 20 whose rotation range is limited by the restriction means is maximized (the contact member 50c contacts the cushion member 25b). Immediately before the sheet S rotated from the position to the sheet use position reaches the sheet use position.

Next, the operation of the retractable vehicle seat apparatus SA configured as described above will be described.
First, as shown in FIG. 2, the operation when the seat back 21 is in the folding position and the sheet S held in the storage position is moved to the seat use position will be described.
In the state shown in FIG. 2, the hook 46 is held in the locked position while being engaged with the storage position holding striker 54. For this reason, first, the lock release switch is operated to the lock release position side to pull the pulling wire W1. Then, as shown in FIG. 11, the pole 47 rotates in the clockwise direction, and the engagement between the engaged portion 47 a and the engaging portion 46 c is released, so that the hook 46 is unlocked by the urging force of the torsion spring 48. Rotate towards If the seat S is rotated and moved forward after the lock release switch is returned to the lock effective position and the hook 46 is held in the unlock position, the storage position holding striker 54 escapes from the striker entry groove 42.
When the seat back 21 is in the folded position as described above, the pressing portion 21a of the seat back frame presses the pressed portion 36a of the rotating piece 36 counterclockwise as shown in FIG. Therefore, the hook 32 is held at the unlock position shown in FIG.

  After the storage position holding striker 54 has escaped from the striker entry groove 42, when the seat S is further rotated forward while the seat back 21 is held in the folded position, the urging force of the gas spring 60 causes the seat to move forward. The opening angle between the cushion 20 and the rotating arm 50 is increased. When the sheet S is in the retracted position, the attitude control wire W2 is slack as shown in FIG. 2, but when the sheet S is rotated forward by a predetermined angle from the retracted position, the attitude control is performed as shown in FIG. The wire W2 is tensioned and becomes a straight line. If the posture control wire W2 is not provided, the front end of the seat cushion 20 is lifted with respect to the rear end due to the urging force of the gas spring 60 during the rotational movement from the retracted position to the seat use position. Will be exposed forward. However, since the retractable vehicle seat device SA of the present embodiment includes the attitude control wire W2, the seat cushion 20 is maintained in a substantially horizontal state while the tension is applied to the attitude control wire S2. The bottom surface of the seat cushion 20 is not exposed forward. In the present embodiment, the length of the posture control wire W2 and the side frame 23 and the wire attachment are set so that the front end of the seat cushion 20 does not extremely fall below the rear end during the rotational movement of the seat S to the seat use position. Since the attachment position to the portion 53a is determined, the seat cushion 20 and the front and rear locking mechanisms U1, U2 do not come into contact with the vehicle floor 11 during the rotational movement.

As the seat S approaches the seat use position, the posture control wire W2 starts to loosen, so the seated person presses the front end portion of the seat back 21 downward by hand to bring the seat cushion 20 and the seat back 21 into a substantially horizontal state. maintain. In this state, the rear striker 14 is caused to enter the striker entry grooves 28a and 30a of the rear lock mechanism U1. As described above, when the seat S approaches the seat use position, the angle formed by the seat cushion 20 and the rotating arm 50 is maximized. At this time, the protrusion amount of the rod 62 of the gas spring 60 is not maximized. The rotation urging force is continuously applied from the gas spring 60 to the seat cushion 20 and the rotating arm 50. For this reason, even if there is mechanical rattling between the pivot arm 50 and the pivot portion (between the insertion hole 50a and the rotating shaft 50b) of the seat cushion 20 (side frame 23), the rotational biasing force of the gas spring 60 As a result, the sheet S is kept in a stable state, so that the sheet S can be smoothly rotated to the sheet use position so that the rear striker 14 enters the striker entry grooves 28a, 30a.
As described above, when the seat back 21 is in the folded position, the pressing portion 21a of the seat back frame presses the pressed portion 36a of the rotating piece 36, and the hook 32 is held in the unlocked position shown in FIG. Therefore, the left and right rear strikers 14 enter the end portions of the striker entry grooves 28a and 30a of the left and right rear lock mechanisms U1.

  In this state, when the seat cushion 20 is rotated forward around the contact point between the rear striker 14 and the striker entry grooves 28a and 30a, the front striker 15 eventually enters the striker entry groove 42 of the front lock mechanism U2. The front striker 15 that has entered the striker entry groove 42 engages with the engagement groove 46a of the hook 46 and rotates the hook 46 counterclockwise. The hook 46 continues to rotate counterclockwise while sliding the engaging portion 46c against the outer peripheral surface of the pole 47, and when the hook 46 rotates to the locked position shown in FIG. 12, the engaged portion 46c and the pole 47 are engaged. The portion 47 a is engaged, the hook 46 is held in the locked position, and the front striker 15 finally reaches the end of the striker entry groove 42. When the hook 46 is moved to the lock position, the arm portion 46b of the hook 46 is engaged with the front striker 15 and closes the open end of the striker entry groove 42. Therefore, the front striker 15 cannot escape from the striker entry groove 42. Become.

Thereafter, when the seat back 21 is moved to the standing position, the engagement between the pressing portion 21a and the pressed portion 36a is released, and as a result, the hook 32 is moved to the locked position by the rotational biasing force of the torsion spring 37. The locked position is maintained (see FIG. 9). When the hook 32 moves to the locked position, the arm portion 32b of the hook 32 is engaged with the rear striker 14 and closes the open end portions of the striker entry grooves 28a, 30a, so that the rear striker 14 is moved to the striker entry groove 28a, It becomes impossible to escape from 30a.
As described above, when the front and rear strikers 14 and 15 and the front and rear locking mechanisms U1 and U2 are locked, the sheet S is held at the sheet use position (see the solid line in FIG. 1 and FIG. 3).

In order to return the seat S from the seat use position to the retracted position, first, the seat back 21 is moved to the folding position, the hook 32 of the rear lock mechanism U1 is moved to the unlock position, and the rear striker 14 is moved. Is made to be able to escape from the striker entry grooves 28a, 30a. Next, the lock release switch is operated to the lock release position side to release the engagement between the pole 47 and the hook 46, and the hook 46 is rotated toward the unlock position by the urging force of the torsion spring 48. 15 is brought into a state where it can escape from the striker entry groove 42.
Thereafter, when the unlocking switch is returned to the lock effective position and the seat S is rotated and moved rearward, the rear striker 14 and the front striker 15 escape from the striker entry grooves 28a and 30a and the striker entry groove 42, respectively. Then, the hook 46 is held in the unlock position, and the sheet S moves to the storage position side.

  When the seat S is moved from the seat use position to the storage position side, the seat cushion 20 attempts to increase the opening angle of the seat cushion 20 with respect to the turning arm 50 by the rotational biasing force of the gas spring 60. The front end of S is pressed by hand, and the seat cushion 20 (seat S) is maintained in a substantially horizontal state. When the seat S is rotated by a predetermined angle from the seat use position to the storage position side, the posture control wire W2 that has been slackened until then becomes a straight line, so even if the seated person releases the hand from the seat S, The sheet S is maintained in a substantially horizontal state. As the seat S approaches the retracted position, the posture control wire W2 begins to loosen, so that the seated person presses the front end of the seat S downward by hand to maintain the seat S in a substantially horizontal state, and in this state Then, the striker 54 for holding the storage position is caused to enter the striker entry groove 42 of the front lock mechanism U2. Also at this time, the rotational biasing force of the gas spring 60 acts on the pivoting portion of the rotating arm 50 and the seat cushion 20 (side frame 23), so that even if the pivoting portion has mechanical rattling. The seat cushion 20 (seat S) rotates and moves rearward in a stable state, and the striker entry groove 42 smoothly enters the storage position holding striker 54.

  Since the hook 46 is held in the unlocked position, the storage position holding striker 54 that has entered the striker entry groove 42 smoothly enters the end portion of the striker entry groove 42 and holds the storage position during the entry. The striker 54 is engaged with the engaging groove 46a of the hook 46, and the hook 46 is rotated counterclockwise. When the hook 46 reaches the locked position, the engaging portion 46c and the engaged portion 47a of the pole 47 are engaged, the hook 46 is held in the locked position, and the seat S is held in the retracted position.

According to this embodiment, since the mounting operation of the attitude control wire W2 is completed in the manufacturing process of the retractable vehicle seat apparatus SA, for example, the operation check of the attitude control wire W2 is performed on the vehicle floor surface 11. You can do it before. Therefore, the mounting operation of the retractable vehicle seat device SA to the floor surface 11 can be performed more easily than in the past.
Further, before the retractable vehicle seat device SA is attached to the floor surface 11 of the vehicle 10, the position of the retractable vehicle seat device SA is adjusted in advance so that the front lock mechanism U2 can be engaged with the retractable vehicle seat device SA. Therefore, the position adjustment of the storage position holding striker 54 is completed in the manufacturing process of the sheet S. Therefore, the mounting operation of the retractable vehicle seat device SA on the floor 11 of the vehicle 10 is further facilitated.

  Further, the gas spring 60 always applies a rotational biasing force to the pivot arm 50 and the seat cushion 20 (side frame 23), including when the opening angle between the seat cushion 20 and the pivot arm 50 becomes maximum. Therefore, even if there is mechanical rattling in the pivoting portions of the pivot arm 50 and the side frame 23, this rattling is always removed. Therefore, the rotational movement of the seat S can be performed in a stable state, and when the seat S is rotated from the storage position to the seat use position, the seat cushion 20 is moved to the striker entry grooves 28a and 30a. The side striker 14 can enter smoothly.

  Further, the front lock mechanism U2 has a function of engaging and disengaging with both the front striker 15 for holding the sheet S in the sheet use position and the storage position holding striker 54 for holding the sheet S in the storage position. As a result, the number of parts can be reduced compared to the case where the seat S is provided with two lock mechanisms that engage with and disengage from the strikers 15 and 54, respectively. As a result, the manufacturing cost can be reduced. it can.

In the present embodiment, the storage recess 13 is provided behind the sheet installation surface 12, but may be provided in front of the sheet installation surface 12.
Further, the cylinder 61 of the gas spring 60 is pivotally attached to the side frame 23 and the rod 62 is pivotally attached to the rotary arm 50. However, the cylinder 61 is pivotally attached to the rotary arm 50 and the rod 62 is pivotally attached to the side frame 23. May be.

1 is a side view of a vehicle according to an embodiment of the present invention. FIG. 4 is an enlarged side view showing a state in which a seat is stored in a storage recess on a floor surface inside the vehicle. It is a side view which shows the state in which the sheet | seat was installed in the sheet | seat installation surface of the floor surface inside a vehicle. It is a perspective view when the retractable vehicle seat device is viewed from the rear when the seat back, the seat back frame, and the seat cushion are removed. It is a top view of a seat cushion frame. FIG. 4 is an enlarged plan view showing a rear end portion of a seat cushion frame, a turning arm, a fixing bracket, and a storage position holding striker. It is a disassembled perspective view which expands and shows the wire attachment part of a connection member, and the edge part of a posture control wire. FIG. 6 is an enlarged cross-sectional view taken along the line VIII-VIII in FIG. 5, showing a state where the rear striker has entered the striker entry groove of the rear lock mechanism of the seat at the seat use position. FIG. 6 is an enlarged side view showing a state in which the rear locking mechanism and the rear striker of the seat are locked at the seat use position. It is sectional drawing which follows the XX arrow line of FIG. FIG. 6 is an enlarged longitudinal sectional side view of the front locking mechanism along XI-XI in FIG. 5, showing a state where the front locking mechanism and the front striker are in an unlocked state. FIG. 12 is an enlarged longitudinal sectional side view similar to FIG. 11, showing a state where the front locking mechanism and the front striker are in a locked state. It is a side view showing a state where a sheet rotates between a storage position and a sheet use position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Floor surface 12 Seat installation surface 13 Storage recessed part 13a Front wall 14 Rear striker 15 Front striker 20 Seat cushion 21 Seat back 21a Press part 22 Seat cushion frame 23 Side frame 24 Front connection member 25 Connection pipe 25a Bracket ( Regulatory measures)
25b Cushion material (regulation means)
26 Front connection plate 27 Bar-shaped reinforcing member 28 Base member 28a Striker entry groove 28b Guide groove 29 Notch 30 Auxiliary member 30a Strike entry groove 31 Rotating shaft 32 Hook 32a Engaging groove 32b Arm portion 33 Connecting pin 34 Link member 35 Rotating shaft 36 rotating piece 36a pressed part 37 torsion spring 38 connecting pin 40 mounting plate 41 locking bracket 42 striker entry groove 44 45 rotating shaft 46 hook 46a engaging groove 46b arm part 46c engaging part 47 pole 47a engaged part 48 49 Torsion spring 50 Rotating arm 50a Insertion hole 50b Rotating shaft 50c Contact member (regulating means)
51 Rotating shaft 52 Bracket for fixing (floor surface fixing member)
53 Connecting member (Floor surface fixing member)
53a Wire attachment portion 53b Attachment piece 54 Strike 60 for holding the storage position Gas spring (rotation biasing means)
61 Cylinder 62 Rod 70 Bolt 71 Nut 72 Mounting Pin SA Retractable Vehicle Seat Device S Seat U1 Rear Lock Mechanism U2 Front Lock Mechanism W1 Pull Wire W2 Posture Control Wire

Claims (3)

A retractable vehicle seat device that supports a single seat so as to be selectively movable between a seat installation surface and a storage recess formed side by side before and after the vehicle floor surface,
Both end portions are pivotally attached to the vehicle floor side and the seat side, respectively, and between the seat use position where the seat is placed on the seat installation surface by the rotational movement and the storage position stored in the storage recess. Rotating arm to rotate
A rotation urging means for urging the sheet in a direction in which an opening angle with respect to the rotation arm increases when the rotation arm rotates between the sheet storage position and the sheet use position;
The sheet is slackened when it is positioned at the sheet use position and the storage position, and is rotated by the force of the rotation urging means while rotating within a predetermined range between the sheet use position and the storage position. A posture control wire that controls the posture of the sheet against the force of the end, and is supported by the sheet at one end, and the portion excluding both ends is in non-contact with the other member while the sheet is rotating within the predetermined range And a floor surface fixing member which is formed as a separate member from the seat and the vehicle floor surface and is fixed to the vehicle floor surface;
Have
On this floor surface fixing member, one end of the rotating arm and the other end of the attitude control wire are supported,
A retractable vehicular seat device, wherein the seat, the rotating arm, the rotation urging means, the attitude control wire, and the floor surface fixing member are unitized before being mounted on the vehicle floor surface. The retractable vehicle seat device according to claim 1,
Further, a restricting means for restricting the maximum opening angle of the rotating arm and the seat cushion is provided, and the rotation urging means attaches the seat to the direction in which the opening angle with respect to the rotating arm becomes large even at the maximum opening angle. Retractable vehicle seat device. The retractable vehicle seat device according to claim 2,
A retractable vehicle seat device in which the rotation biasing means is a gas spring.

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