JPS6411492B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary plate locking device for a rotary seat for an automobile, and particularly to a rotary plate locking device for a rotary seat having a walk-in slider mechanism for slidingly moving the seat in the front and rear directions.

Conventional rotatable seats for automobiles are designed to provide safety by operating a lever to release the rotary lock device, which releases the rotary lock device and allows the seat to rotate.The seatback also folds forward to prevent the seat from being seated. Although there were some seat devices with a walk-in slider mechanism that were designed to be small, there was no seat device that also had a rotation mechanism.

Therefore, the present invention has a structure in which, while the seat is rotating, after operating the rotary lever that releases the rotary lock device, the rotary lever continues to be maintained in the rotationally unlocked state,
In addition, by providing a rotary plate lock device that allows the seat back to be folded forward or to continue locking and canceling the walk-in slider until the end of rotation, even a seat device equipped with a walk-in slider mechanism can be easily rotated. It is something. Therefore, in the present invention, the rotary lock device includes a seat rotating device that enables the rotation of the seat in which the seat bag is pivotally attached to the rear end of the seat cushion so as to be able to raise and lower the seat, and a seat rotating device that allows the seat to slide in the front and back directions to adjust its position. a seat slider device, a seatback forwarding device that moves the seatback forward, a seat slide lock device that engages and disengages from the seat slider device to lock the slide by operating a slide operation section, and a seat slide lock device that engages and disengages from the seat rotation device by operating a rotation operation section. a seat rotation lock device having a latch that allows the seat to be moved forward; and an elastic body that biases the seat to slide to a predetermined position when the seat slide lock device is unlocked; is connected to move the seat back forward when the rotation lock is released by operating the rotation operation unit, and the seat back forward movement device and the seat slide lock device are connected to release the slide lock when the seat back is moved forward. The latch of the locking device is provided so that it can be pushed down to release the rotational lock by operating the rotational operation part of the rotational locking device, and the latch is attached to the seat rotational device at a position 180 degrees out of phase with respect to the rotational axis. A pair of lock holes that serve as a lock portion where the latch enters and exits, and a latch that is formed to protrude downward in a concave shape within an area on the circumference that is rearward from the lock hole when viewed in the rotational direction, and the latch is in a depressed state. The desired purpose is achieved by providing a substantially semicircular latch pressing portion for holding the latch.

The present invention will be described below with reference to illustrative embodiments.

A is a seat that is rotatably placed on a leg b equipped with a walk-in slider mechanism, and is composed of a seat cushion 11 and a seat bag 12, and the lower end 12a of the seat bag 12 is located behind the seat cushion 11. A reclining device mechanism 13 constituting a seat back folding device at the end 11a
It is pivoted so that it can be raised and lowered via. The seat cushion 11 includes a seat cushion frame 14,
It is formed of a bottom plate 15 fixed at both ends to the seat cushion frame 14, a cushion material 16, and an outer skin 17 covering the cushion material 16 and having its peripheral edge attached to the seat cushion frame 14. A cylindrical rotating shaft 18 is fixed to the center of the bottom plate 15, and on the same circumference of the lower surface of the bottom plate 15 around the rotating shaft 18, an engaging stepped portion 19a is provided at the inner peripheral end. A ring-shaped rotating plate 19, which serves as the main body of the sheet rotating device, is fixed. At positions on both sides of the rotary plate 19 that are 180 degrees out of phase about the rotary shaft 18, the rotary plate 19
A lock hole 20 through which a latch 50 for locking the lock enters and exits.
a, 20b are drilled, and the sheet a is inserted through the lock hole.
A latch pushing part 21, which is substantially semicircular and has a concave cross section, is formed on the same circumference on the rear side when viewed from the rotational direction of the seat a, and is formed to protrude downward so as to hold the latch 50 during rotation of the seat a. It is designed to maintain the depressed state. Numerals 22a and 22b are lock holes drilled in the bottom plate 15 at positions overlapping with the lock holes 20a and 20b. In this embodiment, the lock portion through which the latch enters and exits is a lock hole, but the present invention is not limited to this, and a fitting convex portion projecting upward may be provided at a portion corresponding to the lock hole.

The reclining device mechanism 13 includes device plates 23 fixed to the rear ends of both sides of the seat cushion frame 14 of the seat cushion 11.
and a device arm 26 whose base end is rotatably attached to the device plate 23 via a support shaft 24 and whose distal end is fixed to the seat bag frame 25 of the seat bag 12; A reclining lever 27 whose base end is rotatably pivoted to the support shaft 24, and an upper part 2
9a is located between the device arm 26 and the reclining lever 27, and an operating member 29 whose lower end is rotatably connected to the device plate 23 via a support shaft 28; and an intermediate portion of the operating member 29. A lower tooth 31 is pivotally connected to the back surface of the device arm 26 by a coupling pin 30, and has a meshing gear 31a on its upper edge that meshes with a meshing gear 26a formed on the lower edge side of the device arm 26. A spring (not shown) is interposed between the device arm 26 and the device plate 23 (or the support shaft 24) to bias the device arm 26 forward. Further, a seat back 12 is provided on the surface of the device arm 26.
The rear edge 2 of the operating 29 when folded forward.
9a', pushes down the operating member 29, and prevents the meshing gear 26a of the device arm 26 from meshing with the meshing gear 31a of the lower tooth 31; and the device arm 26.
The slide lock device 6, which will be described later, rotates coaxially with the slide lock device 6.
A link 34 for attaching one end of the wire 33 communicating with the lock pin 67 of No. 5 is fixed. Further, on the back side of the reclining lever 27, a front edge 29 of the upper part 29a of the operating 29 is provided.
Operating guide roller 35 that comes into contact with a″
is rotatably attached via a support shaft 36. Further, a substantially semicircular notch 31b is formed at the lower end of the lower tooth 31, and is loosely fitted onto a support shaft 28 to which the operating member 29 is pivotally attached. (See Fig. 3) A slide member 4 is fixed to the outer surface of the lower end of both leg pieces 37a and 37b of the leg part b in parallel to the longitudinal direction of the vehicle body through a bracket 39 to the vehicle body floor 38.
Sliders 41a and 41b that are slidably fitted to the sliders 40a and 40b are fixed by bolts 42, and normally, hooks 43 and leg pieces 37a and 37 are installed in front of the slide members 40a and 40b.
The leg b is moved forward by the spring force of a spring 45 whose both ends are locked to a hook 44 provided at the rear end of the leg b. The slide members 40a, 40b and the slider 41
A and 41b constitute a seat slider device. Further, the upper ends of the leg pieces 37a, 37b are connected at their front and rear ends by frames 46a, 46b, and members 47a, 47b are provided across the intermediate portions of the frames. A rotary plate guide member 48 whose outer peripheral edge 48a engages with the engagement stepped portion 19a of the rotary plate 19 is fixed on the members 47a and 47b, and the rotating shaft 18 is loosely fitted into the center portion of the rotary plate guide member 48. A cylindrical support shaft 48b is fixed. Further, a substantially crank-shaped latch 50 is pivotally attached to the substantially center of one of the members 47b via a latch holder 49.
The tip 50a is configured to enter and exit the lock holes 20a and 20b.

When the latch 50 is operated, the leg pieces 37a, 3
This is done by a rotary lever 51a serving as a rotary operation portion formed by penetrating the leg piece 37a and bending it into a substantially L-shape at one end of a shaft 51 rotatably mounted between the shafts 7b and 7b. being done. That is, the latch 50 and the shaft 51 constitute a seat rotation locking device, and the shaft 51
The proximal end 52a of the link 52 is fitted and fixed to the part corresponding to the latch 50, and the distal end 52a of the link 52
A base end 53a of a link pin 53 is fitted into and fixed to 2b, and a distal end 53b of the link pin 53 is loosely fitted into an elongated hole 54a formed in a latch guide 54 protruding from one side of the latch 50. By operating the rotary lever 51a, the tip 50a of the latch 50 is inserted into the lock holes 20a, 22a (or 20b, 22b), and the lock of the rotation 19 is released. Also, return springs 56 and 5 are provided at one protruding end 55a of the support shaft 55 that pivotally supports the latch 50 on the latch holder 49 and at the tip 51b of the shaft 51, respectively.
7 is interposed so that when the rotary lever 51a is released, the latch 50 is urged to return to its original position. (See Figures 4 to 6) Also,
A base end of a second link 58 is fitted and fixed near the rotating lever 51a of the shaft 51 and inside the leg piece 37a, and the reclining lever 27 is connected to the tip of the link 58. A locking member 60 is fixed to one end of the wire 59 and is pivotally connected by a pin 61. A bracket 62 slidably supports the intermediate portion of the wire 59, and is fixed to the inner surface of the leg piece 37a.
A locking member 63 having a long hole 63a is fixed to the other end of the wire 59, and the locking member 63 is connected to the pin 6.
4, the reclining lever 27 is slidably attached to an arm portion 27a extending rearward below the base end of the reclining lever 27.

Reference numeral 65 denotes a seat slide lock device, and an operation lever serving as a slide operation section is provided at the rear lower end of the leg piece 37a, is approximately L-shaped, and has an operation section 66a that protrudes laterally from the leg section 37a. 66 and a lock pin 67, the main body of the operating lever 66 is rotatably pivoted to the inner surface of the leg piece 37a by a bracket 68, and its base end 6
A return spring 69 is interposed in 6b, and is urged to return to its original state when the operating portion 66a of the operating lever 66 is released. Further, the lock pin 67 is attached to the inner surface of the leg piece 37a below the pivot point of the operating lever 66 so as to be slidable in the left-right direction via a bracket 70, and its tip 67a is attached to the inner surface of the leg piece 37a below the pivot point of the operating lever 66.
It passes through a through hole (not shown) formed in the slider 41a and enters or exits any one of a plurality of lock holes 71 formed in the slide member 40a. The lock pin 67 is operated by operating the operating lever 66 or the rotary lever 51a. That is, the base end of a link 72 is fixed to a portion of the operating lever 66 located above the lock pin 67, and its tip 72a passes through a through hole 70a formed in the bracket 70 and is inserted into the lock pin 67. The locking pin 67 is engaged with the locking hole 67b, and by operating the operating portion 66a, the tip 67a of the locking pin 67 is inserted into the locking hole 71 to unlock the seat slide locking device 65. A link 3 fixed to the device arm 26 is attached to the rear end 67c of the lock pin 67.
A hook member 73 is attached by a pin 74 fixed to the other end of the wire 33 that connects the wire 33 to the wire 33.
A latching member 75 having a long hole 75a is fixed to one end of the wire 33, and the latching member 75 is attached to a pin 76.
is slidably attached to the tip 34a of the link 34, and when the seat back 12 is folded forward, the wire 33 is pulled and the tip 67a of the lock pin 67 is attached.
is inserted into the lock hole 71 to unlock the seat slide lock device 65. A bracket 78 supports the vicinity of one end of the wire 33 and the vicinity of the other end of the wire 59, and is fixed to the device plate 23.

Now, when rotating the rotary lever 51 in the X direction,
Along with this, the link 52 also rotates in the X′ direction,
The latch 50 retracts from the lock holes 20a, 22a (or 20b, 22b), and the rotary plate 19 is unlocked, allowing the seat a to rotate. Incidentally, flanges 80a and 80b are provided in the vicinity of the latch 50 on diagonal lines centered on the support shaft 79 so that the seat a can make an initial rotation elastically when the rotary plate 19 is unlocked. The push-out lever 80 provided is rotatably pivoted, and the flanges 80a, 8 are attached to the lower surface of the rotary plate 19.
A stopper member 81 made of an elastic body and provided with a stopper pin (not shown) that comes into pressure contact with the push-out lever 80 near one side of the push-out lever 80;
The seat a may be initially rotated by the elastic force of a spring 82 that is locked on one side of the seat a, thereby biasing the seat a in the direction of rotation.

The link 52 rotates in the X' direction and rotates the rotating plate 1.
9 is unlocked, and the second link 5
8 also rotates in the X'' direction, which pulls the wire 59 in the P direction and rotates the reclining lever 27 in the Y direction.When the reclining lever 27 rotates in the Y direction, the meshing gear 2 of the device arm 26
6a and the meshing gear 31a of the lower teeth 31 are disengaged, thereby causing the seat back 12 to fall forward. When the seat back 12 falls forward, the device arm 26 also falls forward, and as a result, the link 34 fixed to the device arm 26 rotates in the Z direction, and the wire 33 is pulled in the Q direction. Even without operating the operating lever 66, the lock pin 67 is pulled in the Q' direction and the slide member 4
The seat slide lock device 65 is retracted through the lock hole 71 drilled in the seat 0a, and the seat slide lock device 65 is unlocked, and the seat a moves forward together with the legs b. Note that the time difference between operating the rotary lever 51a and moving the seat a forward is small. After that, when the seat a is rotated, the tip 50a of the latch 50 touches the lower surface 21a of the latch pressing part 21 formed on the rotating plate 19.
comes into contact with. Therefore, even if the rotation lever 51a is released at this point, the latch 50 will remain in the depressed state when the rotation of the seat a is completed, that is, the lock holes 20b, 22b (or 20a, 22a) opposite to each other.
The latch 50 will be held until the latch 50 is engaged. Therefore, the rotation lever 51a also remains in the operating state, thereby releasing the forward tilted state of the seat bag 12 and the locking of the seat slide lock device 65, and sliding the seat a forward to a position where a space for easy rotation can be secured. These operations can be continued until the rotation of sheet a is completed.

As described above, according to the present invention, by operating the rotary lever to push down the latch that locks the rotary plate to release the lock and rotate the seat, it is possible to move the seat along the circumference where the latch of the rotary plate is located. The latch depression part formed on the lower surface of the seat keeps the latch pressed down while the seat is rotating, so that when the seat is rotating, the seat bag moves forward and backward in conjunction with the operation of the rotation lever. The seat slide lock device can be unlocked and held in a position where it can be easily rotated. Furthermore, according to the present invention, the forward tilted state and rotational position of the seat bag can be maintained until the end of the rotation of the seat.
The rotation space can be reduced and rotation can be made easily.

Furthermore, according to the present invention, since the seat is slid forward and rotated, it is possible to widen the leg space when the seat is rotated and seated facing rearward, making it possible to sit comfortably. It is effective.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a rotary seat device according to the present invention, FIG. 2 is a sectional view showing the assembled state of the seat cushion and leg portion, FIG. 3 is an enlarged side view showing the reclining device mechanism, and FIG. The figure is a partially enlarged side view showing the relationship between the latch and the rotary plate, FIG. 5 is a partially enlarged rear view of the same, and FIG. 6 is a partially enlarged rear view of the same when the lock is released. a is a seat, b is a leg part, 11 is a seat cushion, 12 is a seat back, 13 is a reclining device mechanism, 19 is a rotating plate, 20a, 20b are lock holes, 21 is a latch pressing part, 33, 59 are wires, 40a , 40b is a slide member, 41a,
41b is a slider, 48 is a rotating plate guide member,
50 is a latch, 51 is a shaft, 51a is a rotating lever, and 65 is a seat slide lock device.

Claims (1)

[Claims] 1. A seat rotation device that enables rotation of the seat with a seat bag pivoted to the rear end of the seat cushion so that it can be raised and folded;
A seat slider device whose position can be adjusted; a seat back folding device which moves the seat back forward; a seat slide lock device which engages and disengages from the seat slider device to lock the slide by operating a slide operating section; The seat rotation lock device includes a seat rotation lock device having a latch that engages and disengages the seat rotation device, and an elastic body that biases the seat to slide to a predetermined position when the seat slide lock device is unlocked. and the seatback forwarding device are connected to move the seatback forward when the rotation lock is released by operating the rotary operation section, and the seatback forwarding device and the seat slide lock device are connected to release the slide lock when the seatback is moved forward. The latch of the seat rotation lock device is connected to the seat rotation lock device so that the rotation lock can be released by pushing down the latch by operating a rotation operation portion of the rotation lock device, and the seat rotation device includes a lock portion through which the latch enters and exits;
A latch pushing part for holding the latch in a depressed state is provided, and the latch pushing part is formed to protrude downward within the range of the backward rotational direction when viewed from the lock part in the rotational direction. Rotating seat rotation locking device.