JP4175466B2 - Vehicle seat device - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a vehicle seat device.
[0002]
[Prior art and its problems]
In a vehicle seat device, there is a type with a memory function for storing a slide position of a seat (upper rail) with respect to a lower rail. Such a memory function is used during a so-called walk-in operation in which the seat back of the front seat is tilted forward and slid forward when entering and leaving the rear seat. By the way, a seat device with a memory function is generally provided with a switching member for switching between a normal slide state in which the slide memory mechanism is linked to the upper rail side and a memory state in which the slide memory mechanism is fixed to the lower rail side. Is normally held at the slide position side, and the switching member is moved to the memory position side during the walk-in operation. As an example of such a sheet apparatus, for example, JP-A-8-253064 is known. In the seat device of the disclosed invention, the switching member is biased in the memory position direction, and the movement of the switching member to the normal slide position acts on another memory release lever that engages with the switching member. It is done indirectly by power. Therefore, in order to move the switching member correctly, it is necessary to strictly set the balance of the urging forces of the two urging members, which takes time for manufacturing. Also, the operating force required when operating the switching member tends to increase.
[0003]
[Patent Literature]
JP-A-8-253064
[0004]
OBJECT OF THE INVENTION
An object of the present invention is to provide a vehicle seat device that is easy to manufacture and excellent in operability of a switching member of a slide memory mechanism, based on the above-described problem awareness of conventional devices.
[0005]
SUMMARY OF THE INVENTION
The present invention relates to a floor rail on the floor side and an upper rail that is slidable with respect to the lower rail and is fixed to the seat side; a seat lock state that fixes the sliding direction position of the upper rail with respect to the lower rail, and an unlock that releases the fixing A slide lock mechanism that can be switched to a state; a slide having a switching member that can be switched between a normal slide state that slides with the upper rail and a memory state that is fixed on the lower rail side and does not move with the upper rail and stores the seat position before the slide A memory mechanism; and a first unlocking operation member for holding the slide memory mechanism in a normal slide state to bring the slide lock mechanism into an unlock state; and switching the slide memory mechanism to a memory state to unlock the slide lock mechanism A second unlocking operation member In the seat device, the switching member of the slide memory mechanism is positioned at the swing end that cannot move relative to the upper rail in the normal slide state, and is positioned at the swing end that cannot move relative to the lower rail in the memory state. When the swing lever is at one swing end, the swing lever is urged toward one swing end and swings toward the other swing end. A working direction reversing spring for reversing the biasing direction with respect to the swing lever is provided in the middle.
[0006]
According to this structure, the two oscillating ends of the oscillating lever corresponding to the normal sliding state and the normal sliding state can be held by the acting direction reversing spring alone, so that the spring force can be easily set and manufactured. Does not take much time. Further, such a direction-of-action reversal spring functions to assist the movement of the swing lever at an intermediate position when the swing lever moves toward any swing end. The operability can be improved by reducing the size.
[0007]
The slide memory mechanism has a support member to which a swing lever is pivotally attached, and the action direction reversing spring is constituted by a torsion spring having one end engaged with the swing lever and the other end engaged with the support member. It is preferable.
[0008]
As an embodiment of the present invention, apart from the lower rail, a long memory rack that is parallel to the lower rail and fixed to the floor surface is provided, and the swing lever is engaged with the memory rack in the memory state. Can do.
[0009]
The seat device of the present invention is preferably configured as follows. An unlocking end that moves the slide lock mechanism to the memory swing end that cannot move relative to the lower rail, and the slide lock mechanism to the seat lock state, and the swing lever to the upper rail. A movable lock open member is provided at a lock action end that is moved to a normal slide rocking end that cannot be moved relative to the normal slide swing end, and the lock open member is unlocked according to the operation of the second unlock operation member. To be moved to. Further, when the lock open member is positioned at the unlocking end and the seat is moved forward, the movement of the lock open member toward the locking end is restricted, and the seat is retracted to the memory position by the slide memory mechanism. At this time, an unlock holding member that engages with the swing lever and rotates to release the movement restriction with respect to the lock open member is pivotally attached to the upper rail.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The front seat (passenger seat or driver's seat) 11 of the vehicle shown in FIGS. 1 and 2 has a seat cushion 12 that supports the butt of the seated person and a seat back 13 that supports the back of the seated person. The upper rail 15 is fixed to the lower part of the seat cushion frame 14 (FIG. 7) that forms the skeleton of the seat cushion 12. The upper rail 15 is supported so as to be slidable in the longitudinal direction with respect to the lower rail 16 fixed to the floor panel (floor surface) of the vehicle body. By sliding the upper rail 15 with respect to the lower rail 16, the seat 11 The position in the front-rear direction can be changed. A pair of the upper rail 15 and the lower rail 16 are provided separately from each other in the left-right direction of the seat 11, and the left side of the driver's seat (the side visible in FIGS. 1 and 2) is illustrated in FIG. The upper rail 15 and the lower rail 16.
[0011]
3 shows one side surface (side surface outside the vehicle) of the upper rail 15 and the lower rail 16, and FIG. 4 shows the other side surface (side surface inside the vehicle). As shown in FIG. 4, a plurality of slide lock holes 16a are formed in one side portion of the lower rail 16 along the longitudinal direction. The upper rail 15 has a lock claw 17a engageable with the slide lock hole 16a on the same side surface (side surface inside the vehicle) as the side where the slide lock hole 16a is formed, and is positioned above the lock claw 17a. A slide lock plate 17 having a pressed arm 17b is pivotally attached to a rotation shaft 17x. The upper rail 15 is formed with a square hole 15a penetrating both side surfaces, and the pressed arm 17b is projected to the other side surface (side surface outside the vehicle) of the upper rail 15 through the square hole 15a. The axis of the rotation shaft 17x is parallel to the longitudinal direction of the lower rail 16, and the slide lock plate 17 centering on the rotation shaft 17x is in a lock position (FIG. 5) for engaging the lock claw 17a with the slide lock hole 16a. It can be rotated to the unlocking position (FIG. 6) to be detached. When the slide lock plate 17 is in the locked position, sliding of the upper rail 15 with respect to the lower rail 16 is restricted. The slide lock plate 17 is urged to rotate in the lock position direction by a lock urging spring 17c (shown only by arrows in FIGS. 5 and 6).
[0012]
A loop lever 18 is pivotally attached to the upper rail 15 via a rotation shaft 18x that is orthogonal to the rotation shaft 17x of the slide lock plate 17 (the axis is directed in the left-right direction of the seat) on the side surface on which the slide lock plate 17 is supported. Has been. A pressing portion 18a provided at one end portion of the loop lever 18 extends to the other side surface (side surface outside the vehicle) of the upper rail 15 through the square hole 15a, and comes into contact with the pressed arm 17b of the slide lock plate 17 (see FIG. 6). A loop handle (first unlocking operation member) 18 b that can be operated in a seated state is attached to the other end of the loop lever 18. When the loop lever 18 is rotated (swinged) in the clockwise direction in FIG. 7 via the loop handle 18b, the pressing portion 18a presses the pressed arm 17b, and the slide lock plate resists the lock biasing spring 17c. 17 can be rotated in the unlocking direction. When the loop lever 18 is rotated counterclockwise from the unlocking end, the pressing of the pressing portion 18a against the pressed arm 17b is released, and the slide lock plate 17 can be rotated in the locking direction.
[0013]
The seat 11 has a memory function for storing the position of the seat 11 before sliding when performing a walk-in operation in which the seat back 13 is slid forward while entering and exiting the rear seat. Note that the clockwise direction and the counterclockwise direction appearing in the following description relating to the memory function mean the rotational directions in the side views of FIGS.
[0014]
A slide interlocking plate 20 is fixed to the upper rail 15 on the side surface (side surface outside the vehicle) opposite to the side surface on which the slide lock plate 17 and the loop lever 18 are pivotally attached. The slide interlocking plate 20 has an engaging recess 20a formed between a pair of claw portions that are separated in the front-rear direction. In addition, a lock open lever (lock open member) 21, a memory plate (unlock holding member) 22, and a memory lever (unlock holding member) 23 are parallel to the upper rail 15 on the same side as the slide interlocking plate 20. It is pivotally attached via rotating shafts 21x, 22x and 23x. The lock open lever 21 includes a pressing pin 21a that can abut against the pressing portion 18a of the loop lever 18 protruding through the square hole 15a, an outer edge pressing portion 21b positioned below the pressing pin 21a, and the outer edge pressing force. It has a notch 21c formed at an outer edge portion different in position from the portion 21b, a wire engaging arm 21d, and a bent pressing portion 21e bent in a direction parallel to the rotating shaft 21x. The memory plate 22 has a rotation restricting arm 22a that can be engaged with the notch 21c of the lock open lever 21, and a rotation transmission that extends in a direction substantially opposite to the rotation restricting arm 22a across the rotation shaft 22x. It has an arm 22b. The memory plate 22 is urged to rotate counterclockwise by an unlock holding spring 22c (shown only by arrows in FIGS. 7 to 11). The memory lever 23 includes a rotation transmission arm 23a that can be engaged with the rotation transmission arm 22b of the memory plate 22, and a release arm 23b that extends in a direction different from the rotation transmission arm 23a.
[0015]
A memory rack (memory rack) 25 is fixed to the floor panel. The memory rack 25 is a long member parallel to the lower rail 16, and a plurality of memory lock holes 25a are formed along the longitudinal direction thereof. Between the memory rack 25 and the lower rail 16, there is provided a slide piece (support member for a swinging lever) 26 movable in the longitudinal direction. The slide piece 26 includes an inner piece 26a positioned in the inner side (right side of the seat) direction of the vehicle body and an outer piece 26b positioned in the outer side (left side of the seat) direction. In the outer piece 26b, a spring hooking hole 26c and a spring housing recess 26d are formed on the surface facing the memory rack 25.
[0016]
A memory lock lever (swing lever) 28 is pivotally mounted on a bracket (swing lever support member) 27 integrated with the inner piece 26a and the outer piece 26b by a pivot shaft 28x. The memory lock lever 28 has a memory claw 28a that can be engaged with the memory lock hole 25a at the front end with the rotation shaft 28x interposed therebetween, and the slide interlocking plate in the vicinity of the rear end. It has a slide interlocking projection 28b that can be engaged with 20 engaging recesses 20a, and engages with one or the other of the memory lock hole 25a and the engaging recess 20a by swinging around the rotation shaft 28x. A release step 28c is formed in the vicinity (base) of the memory claw 28a. The release step portion 28c is located on the turning locus of the release arm 23b in the memory lever 23 described above. The memory lock lever 28 is further provided with a pressed pin 28d between the rotation shaft 28x and the memory claw 28a, and a spring hook hole 28e is formed below the pressed pin 28d. A convex pressed outer edge portion 28f is formed between the rotation shaft 28x and the slide interlocking projection 28b. The memory lock lever 28 and the slide piece 26 constitute a memory unit (slide memory mechanism) U for storing the slide position of the seat 11.
[0017]
The fixed end portion 30a and the movable end portion 30b of the torsion coil spring 30 are engaged with the spring hooking hole 26c of the slide piece 26 and the spring hooking hole 28e of the memory lock lever 28, respectively. The coil portion (main body portion) of the torsion coil spring 30 is housed in the spring housing recess 26d. The torsion coil spring 30 is an action direction reversing spring that reverses the urging direction according to the swing of the memory lock lever 28.
[0018]
12 to 14 show a support mechanism for the seat back 13. The clockwise direction and the counterclockwise direction appearing in the following description related to the seat back support mechanism mean the rotational directions in the side views of FIGS. 13 and 14.
[0019]
As described above, a pair of the upper rail 15 and the lower rail 16 are provided on the left and right sides of the seat 11, and a pair of left and right seat cushion frames 14 are provided correspondingly. Upper arms 40A and 40B are supported in the vicinity of the rear ends of the left and right seat cushion frames 14 so as to be rotatable about a seat back rotation shaft 40x (hinge pin not shown). A seat back frame (not shown) forming a skeleton of the seat back 13 is fixed to the upper portions of the upper arms 40A and 40B, and the angle of the seat back 13 changes according to the rotation of the upper arms 40A and 40B. The left and right upper arms 40A and 40B are urged to rotate in the forward tilt direction by a forward tilt biasing spring 41 (shown only by arrows in FIGS. 13 and 14).
[0020]
On one upper arm 40A, a ratchet 42 is supported so as to be rotatable relative to the seat back rotating shaft 40x. A memory protrusion 43a of a pole 43 is formed on a memory recess 42a formed on the outer edge of the ratchet 42. When engaged, the ratchet 42 rotates integrally with the upper arm 40A. The pole 43 is pivotally attached to the upper arm by a rotation shaft 43x, and can rotate between a position (FIG. 13) where the memory protrusion 43a is engaged with the memory recess 42a and a position (FIG. 14) where the engagement is released. A release lever 45 for controlling the rotation of the pole 43 is pivotally attached to the upper arm 40A by a rotation shaft 45x. The release lever 45 has a pin insertion hole 45a that engages with an interlocking pin 43b provided on the pole 43, and a sub lever 45b that can press the outer edge of the pole 43, and is rotated counterclockwise by a tension spring 45c. It is energized.
[0021]
Each of the left and right upper arms 40A and 40B is provided with a reclining lock mechanism (not shown) that restricts rotation with respect to the seat cushion frame 14. The reclining lock mechanism is provided between the ratchet 42 and the seat cushion frame 14 on the upper arm 40A side, and is provided between the upper arm 40B and the seat cushion frame 14 on the upper arm 40B side. All the reclining lock mechanisms are biased in the locking direction.
[0022]
An L-shaped traction lever 46 and an interlocking lever 47 are rotatably supported on the seat back rotation shaft 40x. The pulling lever 46 is supported in the vicinity of the upper arm 40B, and when the seat back 13 is tilted forward, the pressed arm 46a is pressed by a part of the upper arm 40B and is rotated counterclockwise. One end of the pulling wire 48 is connected to the wire engaging arm 46 b of the pulling lever 46, and the other end of the pulling wire 48 is connected to the wire engaging arm 21 d of the lock open lever 21. One end portion of the pulling wire 49 is connected to the interlocking lever 47, and the other end portion of the pulling wire 49 is connected to the release lever 45. The interlocking lever 47 is interlocked with the reclining lock mechanism on the upper arm 40B side, and is rotated clockwise through the pulling wire 49 to bring the reclining lock mechanism into an unlocked state.
[0023]
A walk-in operation handle (second unlocking operation member) 50 (FIGS. 1 and 2) is provided on the back of the seat back 13, and the walk-in wire 51 is operated by operating the walk-in operation handle 50. Is towed. The pulled walk-in wire 51 rotates the release lever 45 clockwise against the tension spring 45c.
[0024]
The operation of the seat device configured as described above will be described. A solid line in FIG. 1 indicates a normal seating state of the seat 11. At this time, the mechanism related to the seat slide is in the state shown in FIG. In the state of FIG. 7, the slide lock plate 17 is held at the lock position of FIG. 5, and the sliding of the seat 11 is regulated by the engagement of the lock claw 17a and the slide lock hole 16a. Further, the memory lock lever 28 is held at a swing end that engages the slide interlocking protrusion 28b with the engaging recess 20a by the urging force of the torsion coil spring 30. Hereinafter, the rocking end of the memory lock lever 28 is referred to as a normal slide rocking end. In the normal seating state, the upper arms 40A and 40B are at the angular positions shown in FIG.
[0025]
When the loop handle 18b is lifted upward in this normal seating state, the loop lever 18 rotates clockwise from the position of FIG. 7, and the pressing portion 18a presses the pressed arm 17b of the slide lock plate 17 downward. Then, the slide lock plate 17 is rotated in the unlocking direction against the lock urging spring 17c, and the engagement between the lock claw 17a and the slide lock hole 16a is released (FIG. 6). As a result, the seat 11 (upper rail 15) can move in the front-rear direction with respect to the lower rail 16, as indicated by a two-dot chain line in FIG. At this time, since the memory lock lever 28 is engaged with the slide interlocking plate 20 on the upper rail 15 side, the memory unit U also slides with the entire seat 11. When the hand is released from the loop handle 18b, the slide lock plate 17 returns to the lock position and the seat 11 is locked.
[0026]
Further, when a reclining lock release lever (not shown) is operated in the normal seating state, the reclining lock in both the upper arms 40A and 40B is released, and the rearward tilt angle of the seat back 13 can be arbitrarily set.
[0027]
When the walk-in operation handle 50 is operated from the normal sitting state, the walk-in wire 51 is pulled, and the release lever 45 is rotated clockwise from the position of FIG. Then, the pin insertion hole 45a lifts the interlocking pin 43b, and the pole 43 is rotated in the counterclockwise direction in the figure, and the engagement of the memory protrusion 43a and the memory recess 42a is released. As a result, the coupling relationship between the ratchet 42 and the upper arm 40 is released, and the upper arm 40A can rotate relative to the ratchet 42 about the seat back rotation shaft 40x. At this time, the reclining lock mechanism on the upper arm 40A side is not unlocked, and the rotation of the ratchet 42 is restricted. When the release lever 45 is rotated clockwise, the interlocking lever 47 is rotated clockwise via the pulling wire 49, and the reclining lock mechanism on the upper arm 40B side is unlocked. That is, the left and right upper arms 40A and 40B are rotatable, and are rotated in the forward tilt direction as shown in FIG. 14 by the biasing force of the forward tilt biasing spring 41.
[0028]
When the upper arms 40A and 40B tilt forward, a part of the upper arm 40B presses the pressed arm 46a and rotates the pulling lever 46 counterclockwise as shown in FIG. Then, the lock open lever 21 pulled through the pulling wire 48 rotates counterclockwise from the position shown in FIG. 7 to the position shown in FIG. In the state of FIG. 8, the seat back 13 is in a forward tilt position indicated by a one-dot chain line in FIG. 2.
[0029]
When the lock open lever 21 rotates counterclockwise as described above, the pressing pin 21a presses the pressing portion 18a downward, and the loop lever 18 rotates clockwise. The slide lock plate 17 is rotated to the unlock position shown in FIG. 6 against the force spring 17c. At the same time when the lock open lever 21 is rotated to the unlocking end, the outer edge pressing portion 21b presses the pressed pin 28d downward, and the memory lock lever 28 is rotated counterclockwise from the normal slide swing end ( Swing). Then, the memory lock lever 28 releases the engagement between the slide interlocking protrusion 28b and the engaging recess 20a on the rear end side, and instead engages the memory claw 28a with the memory lock hole 25a on the front end side (FIG. 8). . Hereinafter, the swing end of the memory lock lever 28 is referred to as a memory swing end.
[0030]
That is, as shown in FIG. 8, when the memory lock lever 28 moves to the memory swing end, the seat 11 can slide in the front-rear direction on the lower rail 16 as a whole, but only the memory unit U including the memory lock lever 28 has memory. The movement in the front-rear direction with respect to the rack 25 is restricted. Accordingly, when the seat 11 is slid forward while the seat back 13 is kept tilted as shown by the two-dot chain line in FIG. 2, the slide lock plate 17 and the like mounted on the upper rail 15 side are moved forward as shown in FIG. Although it moves, the memory unit U does not move and remains in its original position as shown in FIG.
[0031]
Since the rotation transmitting arms 22 b and 23 a are engaged, the urging force of the unlock holding spring 22 c acts on the memory lever 23 simultaneously with the memory plate 22. In the state of FIG. 8 in which the seat 11 is not moved forward, the release plate 23c of the memory lever 23 is in contact with the release step 28c of the memory lock lever 28, so that the memory plate 22 and the memory lever 23 are held unlocked. It cannot rotate counterclockwise according to the biasing force of the spring 22c. As shown in FIG. 9, when the seat 11 slides forward, the release arm 23b moves away from the release step portion 28c and the rotation restriction is released. The memory plate 22 and the memory lever 23 are rotated counterclockwise by the unlock holding spring 22c. The rotation restricting arm 22 a of the memory plate 22 is engaged with the notch 21 c of the lock open lever 21. In the state of FIG. 9, a biasing force in the clockwise direction (that is, the unlocking end) acts on the lock open lever 21 as a restoring force of the lock biasing spring 17 c, but the rotation restricting arm 22 a of the memory plate 22 When engaged with the notch 21c, the lock open lever 21 is restricted from turning clockwise relative to the illustrated position. In this state where the lock open lever 21 is restricted, the lock open lever 21 is stopped even if the seat back 13 is raised and the pulling wire 54 is relaxed, and the slide lock plate 17 is held in the unlock position. Is done. That is, even if the seat back 13 is raised, the seat 11 can be freely slid without returning to the slide lock state.
[0032]
In the above walk-in operation, the memory lock lever 28 is normally engaged with the memory swing end (the memory claw 28a and the memory lock hole 25a are engaged) from the slide swing end (the slide interlocking projection 28b and the engaging recess 20a are engaged). ) To the memory state where the memory unit U cannot move relative to the lower rail 16 and remains at the memory position. As described above, when the memory lock lever 28 is at the normal slide swing end in FIG. 7, the urging force of the torsion coil spring 30 acts to hold the memory lock lever 28 at the swing end. The torsion coil spring 30 is configured as an action direction reversing spring in which the biasing direction is switched during the swing of the memory lock lever 28 from the normal slide swing end to the memory swing end of FIGS. 8 and 10. Has been. In other words, the spring hooking hole 26c, the spring hooking hole 28e, and the rotation hole are arranged so that the urging direction is reversed when the memory lock lever 28 reaches the action point (thought point) in the middle of the two swing ends. The positional relationship of the moving shaft 28x and the shape of the torsion coil spring 30 itself are determined.
[0033]
When returning from the walk-in state, the seat 11 is slid backward. Then, as shown in FIG. 11, immediately before the memory position before the walk-in, the memory lever 23 approaches the memory lock lever 28 and the release arm 23b comes into contact with the release step portion 28c. The memory lever 23 is rotated clockwise against the unlock holding spring 22c. Then, the rotation transmission arm 23a presses the rotation transmission arm 22b and the memory plate 22 also rotates clockwise, and the rotation restriction arm 22a releases the engagement with the notch 21c. As a result, the rotation restriction on the lock open lever 21 is released, so that the slide lock plate 17 is rotated from the unlock position to the lock position by the restoring force of the lock biasing spring 17c, and the seat 11 is again in the slide lock state. Become. Specifically, the pressing portion 18a is pushed up by the pressed arm 17b, and the loop lever 18 rotates counterclockwise, and in conjunction with this (the pressing pin 21a is pushed up by the pressing portion 18a), the lock open lever 21 rotates in the clockwise direction toward the locking action end that allows the slide lock by the slide lock plate 17. The lock open lever 21 rotates in the clockwise direction to press the pressed outer edge portion 28f of the memory lock lever 28 with the bending pressing portion 21e, thereby rotating (swinging) the memory lock lever 28 in the clockwise direction. As a result, the memory lock lever 28 swings from the memory swing end to the normal slide swing end. That is, the engagement between the memory claw 28a and the memory lock hole 25a is released, and instead, the slide interlocking protrusion 28b is engaged with the engaging recess 20a, and the memory state of the memory unit U is released. In this embodiment, the memory plate 22 for restricting the rotation of the lock open lever 21 and the memory lever 23 having the release arm 23b for receiving the force for releasing the rotation restriction are separate members. It is also possible to provide an unlock holding member having both functions of the plate 22 and the memory lever 23 alone.
[0034]
In the returning operation from the walk-in state, the biasing direction of the torsion coil spring 30 is reversed again during the swing of the memory lock lever 28. That is, the torsion coil spring 30 urges the memory lock lever 28 to the memory swing end shown in FIGS. 8 to 11 in the walk-in state. When swaying toward the end, the urging direction reverses in the middle, and the memory lock lever 28 is held at the normal slide oscillating end.
[0035]
As described above, in the seat device of the present embodiment, even if the seat back is raised in the middle of the walk-in operation, the slide of the seat 11 is not restricted, so the timing of raising the seat back 13 in the release operation of the walk-in state is arbitrary. . Regardless of the timing at which the seat back 13 is raised, when the seat back 13 is raised, the support mechanism shifts from the state shown in FIG. 14 to the state shown in FIG. On the upper arm 40A side, the pole 43 reaches the position where the memory protrusion 43a and the memory recess 42a correspond. Then, since the pole 43 can be rotated in the clockwise direction in FIG. 13, the release lever 45 urged by the tension spring 45c is rotated in the counterclockwise direction in FIG. The pole 43 is pressed to rotate the pole 43 to a position where the memory protrusion 43a and the memory recess 42a are engaged. This restricts the rotation of the upper arm 40A. The rotation of the release lever 45 simultaneously relaxes the pulling wire 49. Then, since the traction force with respect to the interlocking lever 47 is released, the reclining lock mechanism on the upper arm 40B side can return to the locked state, and the upper arm 40B side is also locked.
[0036]
As can be seen from the above description, in the seat device of the present embodiment, the memory lock lever 28 that normally swings between the rocking rocking end and the memory rocking end is associated with a single torsion coil spring 30 at any rocking end. Therefore, the number of parts can be reduced, and the manufacturing effort of adjusting the mutual urging force between a plurality of springs is not required. Further, the rocking between the normal sliding rocking end of the memory lock lever 28 and the memory rocking end is performed by pressing the lock open lever 21 (the outer edge pressing portion 21b and the bending pressing portion 21e). In any swinging direction, the biasing force of the torsion coil spring 30 is applied as an assist in the middle of the swinging direction, so that the operating force with respect to the lock open lever 21 can be suppressed to be improved.
[0037]
In addition, this invention is not limited to the above embodiment. For example, the seat 11 of the embodiment has a reclining mechanism of a type in which the angle of the seat back 13 before being tilted forward is stored by the ratchet 42, but the seat of a type in which this kind of memory function is not mounted on the reclining mechanism. Even so, the present invention is applicable.
[0038]
In the embodiment, only the upper rail and the lower rail on one side have been described. However, the slide lock-related mechanism may be mounted on both the left and right sides of the seat.
[0039]
【The invention's effect】
As described above, according to the present invention, a vehicle seat device that is easy to manufacture and excellent in the operability of the switching member of the slide memory mechanism can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing a normal seating state and a sliding state of a vehicle seat device to which the present invention is applied.
FIG. 2 is a side view showing a walk-in operation state of the seat apparatus.
FIG. 3 is an exploded perspective view related to a slide function of the seat device.
4 is a perspective view showing a side surface of the lower rail and the upper rail on the opposite side to FIG. 3. FIG.
FIG. 5 is a cross-sectional view of a lower rail and a slide lock plate in a slide lock state.
FIG. 6 is a cross-sectional view of the lower rail and the slide lock plate in an unlocked state.
FIG. 7 is a side view showing the seat slide device in a normal sitting state.
FIG. 8 is a side view showing the seat slide device immediately after operating the walk-in operation handle.
FIG. 9 is a side view showing a slide lock mechanism that has moved forward in the seat slide device in which the seat is slid forward with the memory unit remaining.
FIG. 10 is a side view showing the slide memory mechanism remaining at the memory position in the seat slide device in a state where the seat is slid forward while leaving the memory unit.
FIG. 11 is a side view showing the seat slide device in a state in which the seat is retracted until just before reaching the memory position.
FIG. 12 is an exploded perspective view of a seat back support mechanism.
FIG. 13 is a side view showing the seat back support mechanism in a normal seating state.
FIG. 14 is a side view showing the seat back support mechanism in a state where the seat back is tilted forward.
[Explanation of symbols]
U Memory unit (slide memory mechanism)
11 sheets
12 Seat cushion
13 Seat back
15 Upper rail
16 Lower rail
17 Slide lock plate
17c Lock spring
18 Loop lever
18b Loop handle (first unlocking operation member)
20 Slide interlocking plate
21 Lock open lever (lock open member)
22 Memory plate (unlock holding member)
22c Unlock holding spring
23 Memory lever (unlock holding member)
25 Memory rack (memory rack)
26 Slide piece (support member for swing lever)
26c Spring hook hole
26d Spring storage recess
27 Bracket (support member for swing lever)
28 Memory lock lever (swing lever)
28a Memory Nail
28b Slide interlocking protrusion
28c Release step
28e Spring hole
30 Torsion coil spring (reversing direction of action)
30a Fixed end
30b Movable end
40A 40B Upper arm
45 Release lever
46 Tow lever
48 Tow wire
50 Walk-in operation handle (second unlocking operation member)
51 Walk-in wire

Claims (4)

A lower rail on the floor side and an upper rail which is slidable relative to the lower rail and fixed to the seat side;
A slide lock mechanism that can be switched between a seat lock state in which the sliding direction position of the upper rail is fixed with respect to the lower rail and an unlocked state in which the fixing is released; a normal slide state that slides together with the upper rail; A slide memory mechanism having a switching member fixed to the lower rail side and capable of switching to a memory state storing a seat position before sliding; and holding the slide memory mechanism in a normal slide state and bringing the slide lock mechanism into an unlock state A first unlocking operation member to be operated; and a second unlocking operation member for switching the slide memory mechanism to a memory state to bring the slide lock mechanism into an unlocked state;
In a vehicle seat device comprising:
The switching member of the slide memory mechanism is positioned at a swing end that cannot move relative to the upper rail in the normal slide state, and is positioned at a swing end that cannot move relative to the lower rail in the memory state. It consists of a movable swing lever,
When the oscillating lever is at one oscillating end, the oscillating lever is urged toward the one oscillating end, and when oscillating toward the other oscillating end, the urging direction with respect to the oscillating lever is halfway A vehicle seat device comprising an action direction reversal spring for reversing the movement. 2. The vehicle seat device according to claim 1, wherein the slide memory mechanism has a support member on which the swing lever is pivotally attached, and the action direction reversing spring has one end engaged with the swing lever and the other end. A vehicle seat device comprising a torsion spring having a portion engaged with the support member. 3. The vehicle seat device according to claim 1, further comprising a long memory rack that is parallel to the lower rail and fixed to a floor surface, and wherein the swing lever engages with the memory rack in a memory state. Sheet equipment. The vehicle seat device according to any one of claims 1 to 3,
An unlock action end for moving the slide lock mechanism to an unlocked state and moving the swing lever to a memory swing end that cannot move relative to the lower rail; A lock that can be moved to a locking action end that moves the moving lever to a normal slide rocking end that cannot move relative to the upper rail, and is moved to an unlocking action end in response to an operation of the second unlocking operation member. An open member; and when the lock open member is positioned at the unlocking end and the seat is moved forward, the movement of the lock open member toward the locking end is restricted, and the seat is moved to the memory position by the slide memory mechanism. When retracted, it engages with the swing lever and turns to release the movement restriction on the lock open member. Unlock holding member which is pivotally connected to the upper rail;
A vehicle seat device comprising:

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