JP2010030559A5 - - Google Patents

Description

Car seat equipment

  The present invention relates to a seat device for an automobile provided with a seat cushion and a seat back on the floor of the automobile.

  2. Description of the Related Art Conventionally, there has been known an automobile seat device that includes a so-called reclining mechanism that enables a seat back to tilt forward. By providing this reclining mechanism, the seat back can be folded on the seat cushion, and when the seat back is folded, the back surface can be used as a cargo floor.

  In recent years, it has been proposed that when the seat back is folded, the seat cushion can be moved from the normal upper seating position to the front and lower folding positions. As a result, when the seat back is folded, the back surface thereof can be made substantially horizontal, and the luggage can be placed more stably.

Among these, in Patent Document 1 below, by connecting the seat back and the seat cushion with an appropriate link mechanism, the seat cushion can be moved to the folding position in conjunction with the forward tilting operation of the seat back. Yes. According to the following Patent Document 1, the seat folding operation of the vehicle can be simplified by moving the seat cushion simultaneously with the forward tilt of the seat back.
JP-A-7-61271

  By the way, in an automobile seat device, it is generally known that the seat back is a portion that is relatively easily vibrated by being held in a standing posture extending upward from the seat cushion (seat base). Yes.

  Here, as disclosed in Patent Document 1, considering the case where the seat back and the seat cushion are connected by a link mechanism or the like, in this case, the vibration generated in the seat back is easily transmitted to the seat cushion. Inconvenience such as vibration of the seating surface may occur, which may cause discomfort to the passenger.

  In recent years, for example, in a vehicle type such as a minivan or a wagon car, there is known a vehicle equipped with a seat slide mechanism that enables the seat cushion to slide back and forth with respect to the vehicle body floor in addition to the reclining mechanism described above. In this case, the seat back is placed in a retracted state with a slight forward tilt, and the seat cushion is slid forward to enter the seat using the entrance on the side of the vehicle body in the rear row seat (also called walk-in). You can get off and get on and off.

  Here, in the case of further including a seat slide mechanism, as disclosed in Patent Document 1, it is conceivable to connect the seat back and the seat cushion with a link mechanism or the like. However, in this case, even when the seatback is tilted forward for the purpose of getting on and off of the occupant, the seat cushion is inadvertently moved forward with the forward tilting operation of the seatback by the link mechanism.

  Therefore, the distance between the front end of the seat cushion and the front row seat (or the instrument panel in front of the front seat when the seat that slides) is reduced by the amount of forward movement of the seat cushion. When sliding, it becomes impossible to secure a sufficient amount of sliding. In this case, as a result, the seat device hinders passengers from getting on and off, and there is a possibility that the boarding / alighting performance may be impaired.

  The present invention eliminates the discomfort of the occupant by preventing the vibration of the seat back from being transmitted to the seat cushion while allowing the seat cushion to be reliably moved to the folded position when the seat back is tilted forward. An object of the present invention is to provide an automobile seat device capable of performing the above.

  In addition, the present invention provides an automobile seat device that enables a seat cushion to be slid forward and a seat back to be tilted forward so that passengers can get on and off easily. Objective.

The vehicle seat device of the present invention includes a seat cushion and a seat back on the floor of the vehicle , and when the seat back is folded forward, the seat cushion is moved forward and obliquely downward from a normal upper seating position. A seat device for an automobile that is movable to a folding position, wherein the seat cushion is slidable back and forth with respect to a floor of a vehicle body, and is positioned at the front and back slide position, and the seat The seat slide means comprises: a support means for movably supporting the cushion at a normal upper seating position and a folding position moved diagonally forward and downward; and a reclining means for tilting the seat back forward by operation of the operation means. The reclining means is actuated by the actuation of the operating means to When tilted forward back, while releasing the slide positioning by the seat sliding means, said supporting means is for maintaining the upper seating position of the seat cushion.

  According to this configuration, when the seat cushion and the seat back are not connected via the link mechanism or the like and the operation means is operated, the seat cushion is maintained at the upper seating position regardless of the forward tilting operation of the seat back. Since the seat cushion is not moved forward by the movement to the folding position, the seat cushion can be largely slid forward, and as a result, the boarding / exiting performance can be improved. .

  In one embodiment of the present invention, the seat includes a seat lock means for restricting the movement of the seat cushion at the upper seating position, and a seat lock release means for releasing the restriction of the seat lock means, and the reclining means includes the seat The seat back can be tilted forward to a folding position where the back surface thereof is in a substantially horizontal state or a gently inclined state close to a substantially horizontal state, and the seat lock releasing means By deregulating the means, the seat cushion can be moved to the folding position while being pressed by the seat back.

  According to this configuration, after the seat lock release means releases the movement restriction state of the seat cushion by the seat lock means, the seat cushion is securely placed in the folded position by using the pressing force of the seat back during the forward tilting operation. Can be moved to.

  In one embodiment of the present invention, the support means supports the front side and the rear side of the frame member of the seat cushion on the upper rail of the seat slide means via the front link and the rear link. is there.

  According to this configuration, by supporting the seat cushion via the front and rear links, the seat cushion can be stably supported in the front-rear direction, and the seat cushion is reliably moved to the folding position on the lower front side. be able to.

  In one embodiment of the present invention, a spring for applying a predetermined urging force for returning the seat cushion from the folded position to the upper seating position is provided.

  According to this configuration, the operability for the returning operation of the seat cushion can be improved while being a simple configuration using the biasing force of the spring.

  In one embodiment of the present invention, when the seat slide means operates the reclining means by operating the operation means to tilt the seat back forward, the slide lock release for releasing the slide positioning by the seat slide means is released. Means are provided.

  According to this configuration, the seat cushion can be reliably slidable when the seat back is tilted forward.

  In one embodiment of the present invention, the seat lock release means is configured to release the restriction of the seat lock means in conjunction with the forward tilt when the seat back is tilted forward by a predetermined angle. .

  According to this configuration, when the seat back is tilted forward by the operation of the operation means, the seat cushion can be reliably moved to the folding position.

  In one embodiment of the present invention, the slide lock releasing means releases the slide positioning when the seat back is tilted forward by a second angle smaller than the predetermined angle.

  According to this configuration, it is possible to reliably prevent a problem that the seat cushion moves to the folding position (downwardly diagonally forward) before the seat cushion can slide forward.

The vehicle seat device of the present invention includes a seat cushion and a seat back on the floor of the vehicle , and when the seat back is folded forward, the seat cushion is moved forward and obliquely downward from a normal upper seating position. An automobile seat device movable to a folding position, wherein the seat cushion is movably supported between a normal upper seating position and a folding position moved downward, and the seat cushion at the upper seating position. Seat locking means for restricting the movement of the seat, reclining means for tilting the seat back forward by the operation of the operation means, and seat lock releasing means for releasing the restriction of the seat lock means. While operating the reclining means, the seat lock by the seat lock releasing means While performing the deregulation means, before 傾時 up folded position of the seat back, in which the seat cushion is configured to move to the folded position while being pressed by the seat back.

According to this configuration, since the seat cushion and the seat back are not connected via a link mechanism or the like, it is possible to suppress the vibration of the seat back during vehicle traveling from being transmitted to the seat cushion side. The discomfort at the time can be eliminated.
Furthermore, after the seat lock release means releases the seat cushion movement restriction state by the seat lock means, the seat cushion is reliably moved to the folding position by using the pressing force of the seat back during the forward tilting operation. Can do.

  In one embodiment of the present invention, the support means supports the front side and the rear side of the frame member of the seat cushion via the front link and the rear link.

  According to this configuration, by supporting the seat cushion via the front and rear links, the seat cushion can be stably supported in the front-rear direction, and this can be reliably moved to the lower folding position. it can.

  In one embodiment of the present invention, a spring for applying a predetermined urging force for returning the seat cushion from the folded position to the upper seating position is provided.

  According to this configuration, the operability for the returning operation of the seat cushion can be improved while being a simple configuration using the biasing force of the spring.

  In an embodiment of the present invention, the seat lock release means is configured to release the restriction of the seat lock means in conjunction with the forward tilt when the seat back is tilted forward by a predetermined angle. is there.

  According to this configuration, when the seat back is tilted forward by the operation of the operation means, the seat cushion can be reliably moved to the folding position.

  According to the present invention, when the seat cushion and the seat back are not connected via the link mechanism or the like and the operation means is operated, the seat cushion is maintained at the upper seating position regardless of the forward tilting operation of the seat back. Since the seat cushion is not moved forward by the movement to the folding position, the seat cushion can be largely slid forward, and as a result, the boarding / exiting performance can be improved. .

In addition, according to the present invention, by configuring the seat cushion and the seat back not to be connected via a link mechanism or the like, it is possible to suppress the vibration of the seat back during vehicle travel from being transmitted to the seat cushion side, The uncomfortable feeling when seated on the occupant can be eliminated.
Furthermore, after the seat lock release means releases the seat cushion movement restriction state by the seat lock means, the seat cushion is reliably moved to the folding position by using the pressing force of the seat back during the forward tilting operation. Can do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view showing a vehicle equipped with an automobile seat device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a second row seat. In the figure, the arrow (Fr) indicates the front of the vehicle, and the arrow (R) indicates the rear of the vehicle. The seat 1 shown in FIG. 1 and FIG. 2 is a second row seat installed behind a front row seat (not shown) that serves as a driver seat and a passenger seat in a three-row seat type vehicle such as a minivan or a wagon car, for example. Yes,
It is installed on the floor panel 2. Here, in FIG. 1, the seat 3 installed on the floor panel 2 behind the seat 1 is a third row seat.

  Further, a portion 4 indicated by a one-dot chain line in FIG. 1 is an entrance / exit formed at substantially right and left sides in the vicinity of the seat 1 on the side of the vehicle body. You can get into the eye seat 3 and get off.

  Further, the seat 1 is configured such that a seat cushion 1a that forms a seating surface on the floor panel 2 can slide in the vehicle front-rear direction with respect to the floor panel 2 via the seat slide mechanism 10 shown in FIG. It is supported so that it can be positioned.

  The seat slide mechanism 10 includes a lower rail 10a provided on the floor panel 2, and an upper rail 10b that is slidable in the vehicle front-rear direction with respect to the lower rail 10a.

  The seat 1 shown in FIGS. 1 and 2 has a seat cushion 1a, a seat back 1b that is pivotally supported by a rear end portion of the seat cushion 1a, and an upper part of the seat back 1b. As shown in FIG. 3, the seat 1 has a base frame 11 that forms the base of the seat 1 and is fixed to the upper surface of the upper rail 10 b. FIG. 3 is a perspective view of one side around the seat back support portion of the seat shown in FIGS. 1 and 2 as viewed from the front and the outside.

  The base frame 11 supports the lower portions of the front and rear links 12 and 13 extending in the vertical direction via pivots 14a and 14b.

  And the upper end part of the front side link 12 and the rear side link 13 is connected via the support shafts 15a and 15b to the front part side part and rear part side part of the cushion frame 17 which attached the cushion pan 16 of the seat cushion 1a. ing. Accordingly, the base frame 11 supports the seat cushion 1a on the upper rail 10b via the links 12 and 13.

  Here, when the front and rear links 12 and 13 are in the standing posture as shown in FIG. 3, the seat cushion 1a is held in a proper upper seating position where the seating surface is located at an appropriate height position. On the other hand, when the upper ends of the links 12 and 13 are moved forward by rotation about the support shafts 14a and 14b, the links 12 and 13 are moved to a folding position diagonally forward and downward with respect to the upper seating position. .

  The base frame 11 and the rear link 13 are respectively provided with locking pins 18 and 19 projecting inward in the seat width direction. Both locking pins 18 and 19 have both ends of a leaf spring 20 to be described later. Is locked.

  The leaf spring 20 is elastically deformable with its central portion in the longitudinal direction being substantially arcuate in a side view, and both end portions are folded back in an arcuate shape in a side view so as to be engaged with the locking pins 18 and 19. It is. The rear link 13 is given a biasing force for moving the seat cushion 1a to the upper seating position by the leaf spring 20.

  Further, the base frame 11 is formed with a stopper portion 11a that contacts the rear portion of the rear link 13, and the rear link 13 is rotated more than necessary by the biasing force of the leaf spring 20 by the stopper portion 11a. It regulates that.

  FIG. 4 is a perspective view of the seat back support portion periphery of the seat shown in FIGS. 1 and 2 as viewed from the front and from the inside in the seat width direction, and shows one side in the seat width direction. A base bracket 21 as shown in FIGS. 3 and 4 is attached to the rear portion of the base frame 11. In the seat 1, the base frame 11 and the base bracket 21 are as shown in FIGS. It is concealed by a protective cover 22 that covers the left and right sides of the seat cushion 1a.

  The base bracket 21 rotatably supports a knuckle bracket 25 attached to the seat back frame 23 of the seat back 1b via a connection bracket 24. An upper portion of the knuckle bracket 25 is joined to the connecting bracket 24 in a flat plate shape, and a lower portion is formed in a substantially cylindrical shape to form a rotation center portion 25a. The bracket 21 is rotatably supported.

  One end side of the shaft 26 extending in the seat width direction is disposed through the rotation center portion 25a of the knuckle bracket 25 at the center thereof. The shaft 26 is connected to a cable 28 via a link 27 and is connected to an operation lever 29 disposed on the side of the headrest 1c on the upper surface of the seat back 1b as shown in FIGS.

  In addition, an arcuate slit hole 25b is formed on the inner surface side of the rotation center portion 25a, and a slider pin 30 is disposed so as to be slidable along the slit hole 25b. The slider pin 30 is connected to one end side of the link 32 via a cable 31 extending vertically.

  The link 32 is a plate-like member extending in the sheet width direction, and a substantially central portion in the longitudinal direction thereof is pivotally supported via a support shaft 34 on the front surface of the anchor bar 33 extending in the sheet width direction.

  Further, a push head portion 32a protruding downward is formed on the other end side in the longitudinal direction of the link 32, and is positioned above the rear portion of a lock claw 35a constituting a cushion lock mechanism 35 described later.

  As shown in FIG. 5, the cushion lock mechanism 35 includes a lock claw 35a, a bracket 35b joined to the anchor bar 33, and a support shaft 35c that pivotally supports the lock claw 35a with respect to the bracket 35b. And a spring portion 35e that urges the locking end 35d side formed on the lock claw 35a downward.

  A locking end 35d of the locking claw 35a is positioned above and engageable with a substantially hat-shaped locked portion 36 attached to the rear portion of the cushion frame 17, and the support shaft 35c is connected to the locking claw 35a. By rotating the lock claw 35a at the center, it is possible to switch between engagement and separation with respect to the locked portion 36.

  Here, in the cushion lock mechanism 35, the engagement state between the locking end 35d and the locked portion 36 can be held by the biasing force of the spring portion 35e. For this reason, unless the engagement with the locked portion 36 is released, the lock claw 35a keeps the engaged state with the locked portion 36 and moves the seat cushion 1a downward and obliquely forward at the upper seating position. regulate.

  A portion 35f formed in a convex shape on the bracket 35b is a stopper portion for preventing the locking end 35d from being displaced more than necessary by the urging force of the spring portion 35e.

  6 is a perspective view when the periphery of the seat back support portion of the seat shown in FIGS. 1 and 2 is viewed from the front and the inside in the seat width direction, and shows the other side in the seat width direction. In the seat 1, the base frames 11 are disposed on both sides in the seat width direction, and when the side on which the base bracket 21 is disposed is one side, As shown in FIG. 6, a base bracket 37 corresponding to the base bracket 21 is attached.

  Here, the end portions of the anchor bar 33 are joined to the base brackets 21 and 37, and the base brackets 21 and 37 are bridged by the anchor bar 33. In the seat 1, the anchor bar 33 improves the rigidity.

  Moreover, the base bracket 37 supports the knuckle bracket 38 corresponding to the knuckle bracket 25 so that rotation is possible similarly to the base bracket 21. The knuckle bracket 38 has an upper end joined to a connection bracket 39, and is connected to the seat back frame 23 via the connection bracket 39.

  Thus, in the seat 1, the reclining mechanism is configured by the knuckle brackets 25 and 38 and the base brackets 21 and 37 attached to the frame 23 of the seat back 1b, and the knuckle brackets 25 and 38 are the base bracket 21, The seat back 1b can be tilted forward while being rotated around its lower portion by being rotatably supported by 37.

  Incidentally, the other end of the shaft 26 shown in FIG. 4 is disposed so as to penetrate the base bracket 37 and the knuckle bracket 38 shown in FIG. 6, and constitutes a walk-in mechanism 40 disposed inside the base bracket 37. A support shaft of one link 40a is configured.

  As shown in FIGS. 6 and 7, the walk-in mechanism 40 includes a first link 40 a that is substantially square in a side view, a second link 40 b that is in contact with the lower end of the first link 40 a, and a side view that is substantially in a side view. The third link 40c is Y-shaped and is connected to the second link 40b via the support shaft 40d, and a kick plate 40e fastened to the inner surface side of the knuckle bracket 38.

  Further, in the walk-in mechanism 40, a strap member 41 as shown in FIGS. 1, 2, and 6 is connected via a cable 42 to a support shaft 40d that connects the second link 40b and the third link 40c. Has been.

  Since the first link 40a can be brought into contact with the second link 40b, the first link 40a can be rotated around the shaft 26 by the displacement of the second link 40b. Further, the second link 40b is pivotally supported at one end by the support shaft 40f and applied with a biasing force for moving the other end backward by a spring 40g having one end fixed to the base bracket 37. ing. Further, the third link 4c is formed with three extending portions 40c1, 40c2, 40c3 radially from the support shaft 40d, of which the extending portions 40c1, 40c2 extending upward and downward are kicked at the tip portions, respectively. The lower portion of the plate 40e is disposed so as to be close to the anchor bar 33, and the extending portion 40c3 is connected to a slide lock releasing mechanism 44 shown in FIG. 8 via a cable 43 extending downward.

  FIG. 8 is a perspective view showing the slide lock release mechanism 44. The slide lock releasing mechanism 44 is a mechanism for releasing the positioning of the upper rail 10b in the vehicle longitudinal direction relative to the lower rail 10a and allowing the seat cushion 1a to slide forward and backward. The slide lock releasing mechanism 44 is mainly composed of a first link 44a connected to the cable 43 and a second link 44b disposed in front of the first link 44a.

  The first link 44a is rotatably supported by the base frame 11 via a support shaft 44c, and a hole 44d is formed at the lower end thereof. The difference between the tip of the cable 43 and the hole 44d. The cable 43 and the 1st link 44a are connected by the insertion tool 43a being inserted. Further, the first link 44a has a pushing projection piece 44e bent inward at the front end portion thereof, and the pushing projection piece 44e is arranged at a position covering the rear end portion of the second link 44b. Yes.

  The second link 44b is rotatably supported by the base frame 11 via a support shaft 44f, and a downward extending portion 44g is formed between the rear end portion and the support shaft 44f. A comb tooth portion (not shown) having protrusions extending downward at regular intervals in the front-rear direction is formed at the lower end portion of the downward extending portion 44g, and the comb tooth portion is, as is known, the lower rail 10a. In the upper surface portion, it is possible to engage with a hole portion (not shown) formed at an equal interval with the front-rear interval of the protrusion of the comb tooth portion.

  Here, the second link 44b is pivotally supported by the support shaft 44f, so that the rear side can be moved up and down. In the seat slide mechanism 10, when the rear part side of the second link 44b is positioned upward, the protrusion of the comb tooth part on the second link 44b side and the hole part on the lower rail 10a side are engaged. Then, the sliding movement of the seat cushion 1a in the front-rear direction is restricted and positioning is performed. On the other hand, when the rear end portion is positioned below, the engagement between the protrusion of the comb tooth portion and the hole portion is released, and the seat cushion 1a is movable in the front-rear direction.

  A portion between the support shaft 44f and the downwardly extending portion 44g (comb portion) is connected to a spring 44h whose one end is fixed to the base frame 11, and the second link 44b is connected by the spring 44h. The portion on the rear side of the support shaft 44f is always urged upward, and the seat cushion 1a is maintained in the positioning state during normal times.

(When folding the seat back)
Here, with reference to FIG. 9 to FIG. 12, the operation when the seat back 1b is folded on the seat cushion 1a will be described. In the present embodiment, as described above, the knuckle brackets 25 and 38 attached to the seat back frame 23 of the seat back 1b are rotatably supported with respect to the base brackets 21 and 37, so that the back surface is substantially horizontal. The seat back 1b can be tilted forward to the folded position where the state is in a gentle inclination state close to a substantially horizontal state.

  In this case, the occupant first pulls the cable 28 by pulling the operation lever 29 in the direction of arrow A shown in FIG. 9, and the shaft 26 is moved in the direction shown by arrow B via the link 27 as shown in FIG. Rotate.

  As described above, when the shaft 26 is rotated by the operation of the operation lever 29, the first link 40a rotates in the direction away from the second link 40b in the walk-in mechanism 40 (see FIG. 6). 40b and 40c do not operate.

  Incidentally, a known reclining lock releasing mechanism (not shown) is built in between the base bracket 21 and the rotation center portion 25a of the knuckle bracket 25. In the present embodiment, as described above, when the shaft 26 rotates, the cam constituting the release mechanism rotates, and the standing posture holding state of the seat back 1b is released.

  In this way, when the standing posture holding state of the seat back 1b is released, the knuckle brackets 25 and 38 can be rotated, and the seat back 1b is provided with a biasing means (not shown) as shown in FIG. It rotates in the forward tilt direction by the biasing force.

  At this time, the knuckle bracket 25 is rotated in the direction of arrow C shown in FIGS. 4 and 10, but when the knuckle bracket 25 is rotated by a predetermined angle θ1 shown in FIG. 10, one end of the slit hole 25b The slider pin 30 comes into contact with it, and accordingly, the cable 31 is pulled upward as shown by an arrow D in FIG.

  As a result, the link 32 rotates counterclockwise as indicated by an arrow E in FIG. 11A, and the rear portion of the lock claw 35a of the cushion lock mechanism 35 is moved against the urging force of the spring 35e. Move downward as indicated by F. At this time, the lock claw 35a rotates about the support shaft 35c in the clockwise direction as shown by an arrow G in FIG. 11 (b) to engage the locking end 35d with the locked portion 36. The movement restriction state at the upper seating position of the seat cushion 1a is released.

  In the present embodiment, when the seat back 1b is tilted forward, the lower part of the front surface comes into contact with the rear portion of the seat cushion 1a, and when the movement restriction state at the upper seating position is released as described above, The seat cushion 1a can be moved to the folding position by the pressing force during the forward tilting operation of the seat back 1b.

  At this time, the leaf spring 20 changes from the state shown in FIG. 12A to the state shown in FIG. 12B while being elastically deformed. As a result, the seat cushion 1a rotates the front and rear links 12, 13. To move it down (dive down) to the folding position diagonally forward.

  For this reason, when the seat back 1b is folded onto the seat cushion 1a, the back of the seat back 1b can be brought into a substantially horizontal state as shown in FIG. 13 by dive down of the seat cushion 1a. It becomes possible to place it stably.

  As described above, in this embodiment, the seat back 1b is tilted forward in response to the operation of the operation lever 29 without the seat cushion 1a and the seat back 1b being connected via a link mechanism or the like, and the link 32 is cushion-locked. When the restriction state of the mechanism 35 is released, the seat cushion 1a can be moved to the folding position while being pressed by the seat back 1b.

  In this case, by not connecting the seat cushion 1a and the seat back 1b, the vibration of the seat back 1b during traveling of the vehicle can be prevented from being transmitted to the side of the seat cushion 1a. Can be resolved.

  In particular, when the seat cushion 1a is configured to be movable by the seat slide mechanism 10 in a vehicle type such as a minivan or a wagon car, the seat cushion 1a is disposed apart from the floor panel 2 by the seat slide mechanism 10. Therefore, the vibration of the seat back 1b is easily transmitted to the seat cushion 1a.

  Further, when the vehicle driving system is a so-called FF type of a front engine / front drive, it has been found that the rear row side seats 1 are more likely to vibrate because the center of gravity is located at the front of the vehicle.

  Therefore, the configuration in which the seat cushion 1a and the seat back 1b are not connected via a link mechanism or the like as in the present embodiment is configured such that the seat cushion 1a is movable by the seat slide mechanism 10 as described above. Or it becomes more suitable in what the drive system of the vehicle is made into FF type.

  Furthermore, in this embodiment, after the link 32 cancels the movement restriction state of the seat cushion 1a by the cushion lock mechanism 35, the seat cushion 1a is folded by using the pressing force of the seat back 1b during the forward tilting operation. Can be moved reliably.

  Further, the base frame 11 supports the seat cushion 1a in the front and rear directions by supporting the seat cushion 1a on the upper rail 10b of the seat seat slide mechanism 10 via the front and rear links 12 and 13. This can be reliably moved to the folding position forward and obliquely downward.

  Further, when the seat back 1b is tilted forward by a predetermined angle θ1, the link 32 is released from the movement restriction state of the seat cushion 1a by the seat lock mechanism 35 in conjunction with the forward tilt. Thus, when the seat back 1b is tilted forward, the seat cushion 1a can be reliably moved to the folding position.

  By the way, when the seat back 1b is returned to the standing posture from the state shown in FIG. 13, the cushion 1a is pushed backward and upward toward the upper seating position by the action of the urging force of the leaf spring 20. It has become. And the to-be-latched part 36 attached to the cushion frame 17 can be made to contact | abut to the latching end 35d of the lock nail | claw 35a returned to the initial position by the urging | biasing force of the spring 35e.

  At this time, the pressing force of the locked portion 36 acts on the lock claw 35a, and the lock claw 35a rotates in the direction of the arrow G (see FIG. 11B) against the urging force of the spring 35e. . Then, when the locking end 35d of the locking claw 35a is pushed upward by the pressing force of the locked portion 36, and the locked portion 36 further advances rearward and gets over the locking end 35d, the locking claw 35a Is rotated in the opposite direction to the arrow G by the action of the urging force of the spring 35e, and both are engaged again. As described above, when the lock claw 35a and the locked portion 36 are engaged again, the seat cushion 1a can be returned to the state where it is held at the upper seating position only by the return operation of the seat back 1b. .

  In the present embodiment, since the leaf spring 20 is provided and the seat cushion 1a in the folded position is returned to the upper seating position, the configuration of the seat cushion 1a is simplified while using the urging force of the leaf spring 20. The operability for the return operation can be improved.

(3rd row seat entry / exit operation)
Next, with reference to FIGS. 14 to 16, the operation when a predetermined operation is performed to get on and off the passenger in the third row seat 3 (see FIGS. 2 and 16) will be described. In this embodiment, as described above, the seat cushion 1a is slidably supported by the seat slide mechanism 10, and the seat back frame 23 of the seat back 1b is supported to be rotatable with respect to the base brackets 21 and 37. Thus, when the seat 1 is slid forward while the seat back 1b is slightly tilted forward, the passengers in the third row seats 3 can get on and off from the entrance 4 .

  In this case, first, the occupant pulls the strap member 41 in the direction indicated by the arrow H in FIG. 14B in the initial state shown in FIG. At this time, the second and third links 40b and 40c rotate counterclockwise as indicated by the arrow I about the support shaft 40f against the urging force of the spring 40g.

  At this time, as the second link 40b rotates, the first link 40a that contacts the second link 40b rotates clockwise as indicated by an arrow J, whereby the shaft 26 rotates in the direction of arrow B. .

  When the shaft 26 rotates in this manner, as in the case of folding the seat back 1b described above, the reclining lock releasing mechanism releases the standing posture holding state of the seat back 1b, and the seat back 1b is rotated in the forward tilt direction. It is done.

  When the seat back 1b starts to tilt forward, the kick plate 40e fastened and fixed to the knuckle bracket 38 (see FIG. 6) is moved by the arrow K as shown in FIG. It turns counterclockwise as shown.

  When the kick plate 40e is rotated in this manner, the third link 40c has already moved forward when the strap member 41 is operated, so that the lower portion of the kick plate 40e and the extended portion 40c1 of the third link 40 are moved. And the third link 40c is rotated in the clockwise direction indicated by the arrow L by further rotation of the kick plate 40e.

  At this time, along with the rotation of the third link 40c, the extending portion 40c3 is displaced upward. Due to the displacement of the extending portion 40c3, the cable 43 connected thereto is indicated by an arrow M. Will be pulled upward.

  When the cable 43 is pulled in this manner, the first link 44a of the slide lock mechanism 44 shown in FIG. 8 rotates in the direction indicated by the arrow N about the support shaft 44c, and the pushing protrusion 44e is moved downward. Displace to. At this time, the rear end portion of the second link 44b is pressed downward, and rotates in the direction indicated by the arrow P against the urging force of the spring 44h.

  Then, by the rotation of the second link 44b, the downward extending portion 44g moves downward as indicated by an arrow Q, and the protrusion of the comb tooth portion formed at the lower end portion thereof and the hole portion on the lower rail 10a side Is disengaged. Thereby, the positioning state of the seat cushion 1a above the upper rail 10b is released, and the seat 1 becomes slidable forward.

  By the way, after the third link 40c is rotated as shown in FIG. 14C to operate the slide lock mechanism 44, when the rotation further proceeds, the extending portion 40c2 comes into contact with the lower anchor bar 33. Further rotation is restricted.

  Therefore, the rotation of the kick plate 40e is restricted, and further the rotation of the seat back 1b is restricted. As a result of such a series of operations, as shown in FIGS. 15 and 16, the seat 1 can be slid forward while the seat back 1b (knuckle bracket 25) is in a retracted state slightly tilted forward. Thus, the third row seat 3 can smoothly get on and off from the entrance 4.

  In the present embodiment, as described above, when the strap member 41 is operated, the rotation of the seat back 1b is regulated in the middle, so that the slit hole 25b of the knuckle bracket 25 as shown in FIG. The rotation of the knuckle bracket 25 can be stopped at an angle θ2 smaller than the angle θ1 at which one end of the slider contacts the slider pin 30.

  Accordingly, when the strap member 41 is operated, the link 32 does not operate, and the seat cushion 1a remains in the upper seating position by the cushion lock mechanism 35.

  Thus, in the present embodiment, when the seat cushion 1a and the seat back 1b are not connected via the link mechanism or the like and the strap member 41 is operated, the seat cushion 1a regardless of the forward tilting operation of the seat back 1b. Is maintained at the upper seating position. In this case, since the seat cushion 1a does not move forward due to the dive down, the distance from the front row seat can be secured large, so that the seat 1 can be largely slid forward. It is possible to improve the boarding / exiting ability when the occupant of the row seat 3 gets on / off.

  Further, when the seat back 1b is tilted forward by the operation of the strap member 41, the seat slide mechanism 10 allows the walk-in mechanism 40 to cancel the positioning state of the slide lock mechanism 44. At the time of tilting, the seat cushion 1a can be reliably slidable.

  In this embodiment, when the strap member 41 is actuated, the walk-in mechanism 40 causes the slide lock mechanism 44 to slide when the angle when the seat back 1b is tilted forward becomes the second angle θ2 smaller than the predetermined angle θ1. The positioning state is released. As a result, it is possible to reliably prevent the problem that the seat cushion 1a is dive-down before the seat cushion 1a can slide forward.

  In the above-described embodiment, the case where the second row seat 1 is made slidable so that the occupant of the third row seat 3 can get on and off from the entrance 4 on the side of the seat 1 has been described. It is not limited to this. For example, the present invention may be applied to a slidable front row seat so that an occupant of the second row seat can get on and off from the entrance on the side of the first row (front row) seat.

  In this case, when the front row seat is slid, the seat cushion can be restricted from dive-down obliquely forward, so that a large distance between the front row seat and the instrument panel located in front of the front row seat can be secured. It is possible to slide forward greatly. As a result, it is possible to improve the boarding / exiting performance when the passengers in the second row seats get on / off from the entrance / exit.

In correspondence between the configuration of the present invention and the above-described embodiment,
The seat slide means of the present invention corresponds to the seat slide mechanism 10, the walk-in mechanism 40, and the slide lock mechanism 44,
Similarly,
The support means corresponds to the base frame 11,
The reclining means corresponds to the base brackets 21 and 37 and the knuckle brackets 25 and 38,
The seat lock means corresponds to the cushion lock mechanism 35,
The seat lock releasing means corresponds to the link 32,
The slide unlocking means corresponds to the walk-in mechanism 40,
The operating means corresponds to the operating lever 29 and the strap member 41,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The side view which shows the vehicle provided with the vehicle seat apparatus which concerns on embodiment of this invention. The perspective view which shows a 2nd row sheet | seat. The perspective view which looked at the seat back support part periphery one side of the sheet | seat shown in FIG. 1, FIG. 2 from the front and the outer side. FIG. 3 is a perspective view of the seat back support portion periphery of the seat shown in FIGS. 1 and 2 as viewed from the front and from the inside in the seat width direction, and shows one side in the seat width direction. The perspective view which shows a cushion lock mechanism. FIG. 3 is a perspective view of the vicinity of the seat back support portion of the seat shown in FIGS. 1 and 2 when viewed from the front and from the inside in the seat width direction, and shows the other side in the seat width direction. The figure which looked at the walk-in mechanism from the front. The perspective view which shows a slide lock mechanism. The side view which shows the state which the seat back inclines forward at the time of operation lever operation | movement. The side view which shows the state which the knuckle bracket is rotating at the time of operation lever action | operation. (A) The front view which shows the state which the link is rotating at the time of operation lever action | operation. (B) The side view which shows operation | movement of a cushion lock mechanism. (A) The side view which shows the state of the leaf | plate spring before operation lever operation, (b) The side view which shows the state of the leaf | plate spring after operation lever operation. The side view which shows the state which has a seat cushion and a seat back in a folding position. It is a side view for demonstrating the behavior of the walk-in mechanism at the time of strap member operation | movement, (a) The figure which shows the state before strap member operation | movement, (b) The figure which shows the state immediately after strap member operation | movement, (c) Seat The figure which shows the state at the time of back tilting operation | movement. The side view which shows a state when rotation of a knuckle bracket stops at the time of a strap member action | operation. The side view which shows the state in which the boarding / alighting from the boarding / alighting opening was accept | permitted in the 3rd row | line seat.

DESCRIPTION OF SYMBOLS 1 ... Seat 1a ... Seat cushion 1b ... Seat back 2 ... Floor panel 10 ... Seat slide mechanism 10b ... Upper rail 11 ... Base frame 12 ... Front side link 13 ... Rear side link 17 ... Cushion frame 20 ... Leaf spring 21, 37 ... Base bracket 25, 38 ... Knuckle bracket 29 ... Control lever 32 ... Link 35 ... Cushion lock mechanism 40 ... Walk-in mechanism 41 ... Strap member 44 ... Slide lock mechanism

Claims (11)

The car floor has a seat cushion and a seat back ,
When the seat back is tilted forward, the seat cushion can be moved to a folding position by moving the seat cushion downward and obliquely forward from a normal upper seating position ,
A seat slide means that enables the seat cushion to slide back and forth with respect to the floor of the vehicle body, and enables positioning at the front and rear slide position;
A support means for movably supporting the seat cushion between a normal upper seating position and a folding position where the seat cushion is moved obliquely forward and downward;
Reclining means for tilting the seat back forward by operation of the operating means,
The seat slide means releases the slide positioning by the seat slide means when the reclining means is actuated by operating the operation means to tilt the seat back forward,
The support means is an automobile seat device that maintains an upper seating position of the seat cushion. Seat locking means for restricting movement of the seat cushion at the upper sitting position;
A seat lock release means for releasing the restriction of the seat lock means,
The reclining means enables the seat back to be tilted forward to a folding position where the back of the seat back is in a substantially horizontal state or a gently inclined state close to a substantially horizontal state,
The seat lock releasing means is configured to be able to move to a folding position while pressing the seat cushion with the seat back by releasing the restriction of the seat lock means in a forward tilt state of the seat back. Car seat equipment. The vehicle seat device according to claim 1 or 2, wherein the support means supports the front side and the rear side of the frame member of the seat cushion on the upper rail of the seat slide means via a front side link and a rear side link. . The automobile seat device according to claim 3, further comprising a spring for applying a predetermined urging force for returning the seat cushion from the folded position to the upper seating position. The seat slide means includes a slide lock release means for releasing the slide positioning by the seat slide means when the reclining means is actuated by operating the operation means to tilt the seat back forward. Car seat equipment. 6. The vehicle seat device according to claim 2, wherein the seat lock release means is configured to release the restriction of the seat lock means in conjunction with the forward tilt when the seat back is tilted forward by a predetermined angle. . 7. The vehicle seat apparatus according to claim 6, wherein the slide lock releasing means releases the slide positioning when the seat back is tilted forward by a second angle smaller than the predetermined angle. The car floor has a seat cushion and a seat back ,
When the seat back is tilted forward, the seat cushion can be moved to a folding position by moving the seat cushion downward and obliquely forward from a normal upper seating position ,
A support means for movably supporting the seat cushion between a regular upper seating position and a folding position moved downward;
Seat locking means for restricting movement of the seat cushion at the upper sitting position;
Reclining means for tilting the seat back forward by operation of the operating means;
A seat lock release means for releasing the restriction of the seat lock means,
While the reclining means is operated by the operation means, the seat cushion is released when the seat lock releasing means is deregulated by the seat lock releasing means when the seat back is tilted forward to the folding position. An automobile seat device configured to move to a folding position while being pressed by a seat back. The automobile seat device according to claim 8, wherein the support means supports the front side and the rear side of the frame member of the seat cushion via a front link and a rear link. The vehicle seat device according to claim 9, further comprising a spring that applies a predetermined urging force for returning the seat cushion from the folded position to the upper seating position. 9. The vehicle seat device according to claim 8, wherein the seat lock release means is configured to release the restriction of the seat lock means in conjunction with the forward tilt when the seat back is tilted forward by a predetermined angle.