JPS6411491B2 - - Google Patents

Description

Detailed Description of the Invention The present invention makes it possible to adjust the position of a rotating seat for an automobile by sliding the seat in the front and rear directions, and also to unlock the seat slider device and move the seat forward to allow passengers to get on and off the vehicle. This invention relates to a double lock structure of a rotating seat equipped with a so-called walk-in slider device.

As disclosed in Japanese Patent Application Laid-Open No. 75225/1983, when a conventional rotary seat for an automobile is folded down, when a lever is operated to release the rotary lock device, the rotary lock device is released and the seat back becomes rotatable. There were some seat systems that were designed to prevent the seat from tilting forward and making it impossible to sit, and also to prevent the rotating space from becoming too large. Nakatsuta.

Furthermore, seat devices equipped with a walk-in slider device are generally used to improve the ease of getting in and out of the rear seat, and the seat back is designed to fold forward when the seat is moved. That is, the walk-in slider device and the seatback forward-folding mechanism are connected by a connecting device such as a wire or a link, and when the reclining lever (or walk-in lever) is operated to unlock the seatback, the seatback is moved to the forward-folding mechanism. The seat slider is tilted forward by the spring force of the interposed spring, and the connected wire is pulled, the locking mechanism of the seat slide is unlocked, and the seat slider device is moved forward by the spring force of the spring disposed in the walk-in slider device. Generally, the seat is designed to move forward.

Therefore, when attempting to convert a seat equipped with a walk-in slider device into a rotating seat using a conventional rotating device that tilts the seat back forward to prevent the seat from being seated for safety reasons, it is difficult to operate the rotating lever. When the rotating lock device is removed, the locking mechanism of the seat slide becomes unlocked and the seat moves forward, resulting in various inconveniences when rotating the seat (for example, the seat does not touch the seat back of the front seat, etc.). (such as making it impossible to rotate due to abutment).

The present invention has been made in view of the above-mentioned problems, and even if a rotating device is incorporated into a seat equipped with a walk-in slider device, when the seat back is moved forward and the seat is rotated, the seat will not slide. Therefore, the present invention provides a rotating device that allows the seat to rotate freely, a rotation lock mechanism that locks the rotation of the rotating device, and a seat slider device that allows the seat to slide freely in the front and rear directions. , a seat slide lock mechanism that locks the slide of the seat slider device at an appropriate position, and a seat back forward tilt mechanism that tilts the seat back forward from a seated state, and the seat back tilt mechanism is connected to the slide lock mechanism. is,
In a rotating seat with a walk-in slider device, which is provided with a walk-in mechanism that releases the lock of the seat slide lock mechanism and slides the seat forward when the seat back is tilted forward, in addition to the seat slide lock mechanism, the seat slide lock mechanism is unlocked. A rotary seat slide lock mechanism is provided for locking the slide of the slider device, and the rotary seat slide lock mechanism is normally in the slide lock release state, and the rotary seat slide lock mechanism is configured such that the rotary seat slide lock mechanism is in the slide lock state when the rotation lock is released. The intended purpose is achieved by providing a double lock structure in which the mechanism and the rotating seat slide lock mechanism are interlocked.

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

A is a seat rotatably supported on a leg b provided with a walk-in slider device, and is composed of a seat cushion 11 and a seat bag 12.
The lower end 12a of the seat cushion 11 is the rear end 11 of the seat cushion 11.
The seat back 12 is pivotally attached to the seat back 12 via a reclining device 13 having a mechanism for folding it forward, so that the seat back 12 can be raised and folded. Seat cushion 11
includes a seat cushion frame 14 and a bottom plate 1 fixed at both ends to the seat cushion frame 14.
5, a cushion material 16 which is a filling, and an outer skin 17 which covers the cushion material 16 and whose peripheral edge is 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 on the inner peripheral edge. A ring-shaped rotary plate 19 having a diameter is fixed thereto. At both ends of the rotating plate 19, which are 180 degrees out of phase around the rotating shaft 18,
Lock holes 20a and 20b into which the latch 52 for locking the rotary plate 19 retracts are drilled, and the cross section is concave on the same circumference on the rear side of the lock hole when viewed from the direction of rotation of the seat a. A latch pressing portion 21 is formed to protrude downward and is provided in a substantially semicircular shape, and is adapted to hold the latch 52 in a depressed state during rotation of the seat a. 22a and 22b are the lock holes 20
This is a lock hole drilled in the bottom plate 15 at a position overlapping with a and 20b. In this embodiment, the lock portion through which the latch 52 retracts is a lock hole; however, the present invention is not limited to this, and an engaging portion that protrudes upward and has an inverted concave cross section may be provided at a portion corresponding to the lock hole. You can.

A reclining device device 13 equipped with a mechanism for tilting the seat back 12 forward includes a device plate 23 fixed to the rear end of both sides of the seat cushion frame 14 of the seat cushion 11, and a device plate 23 attached to the device plate 23 via a support shaft 24. A device arm 26 whose end is rotatably pivoted and whose distal end is fixed to the lower end of one side of the seat back frame 25 of the seat back 12; A reclining lever 27 which is rotatably pivoted and an upper part 29a are located between the device arm 26 and the reclining lever 27, and a lower end is rotatably pivoted to the device plate 23 via a support shaft 28. A meshing gear 31a is pivotally connected to the rear surface of the intermediate portion of the operating member 29 by a coupling pin 30, and meshes with a meshing gear 26a formed on the lower edge of the device arm 26 at its upper edge. The lower tooth 31 has a lower tooth 31. A spring (not shown) is interposed between the device arm 26 and the device plate 23 (or the support shaft 24) to constantly bias the seat back 12 in the forward direction.
Further, the surface of the device arm 26 is provided with the operating device 2 when the seat bag 12 is folded forward.
9, the meshing gear 26a of the device arm 26 and the lower tooth 3
A substantially fan-shaped protrusion 32 that prevents meshing with the first meshing gear 31a;
Lock pin 7 of seat slide lock mechanism 68
A link 34 to which one end of a wire 33 communicating with 0 is attached is fixed. Further, the operating button 29 is provided on the back side of the reclining lever 27.
An operating guide roller 35 that comes into contact with the front edge 29a'' of the upper part 29a is rotatably mounted via a support shaft 36. The lower end of the lower tooth 31 has a notch 31b having a substantially semicircular shape. A bracket 39 is attached to the vehicle body floor 38 on the outer surface of the lower end of both leg pieces 37a, 37b of the leg b. A fixed rail 40 is fixed in parallel to the front and back direction of the vehicle body through the
Slider 4 slidably fitted to a and 40b
1a and 41b are fixed by bolts 42, and the fixed rails and the slider constitute a seat slider device 43 for the seat a. Usually, a hook 44 erected in front of the fixed rails 40a, 40b, and leg pieces 37a, 37b are provided.
The leg part b is moved forward by the spring force of a spring 46 whose both ends are locked to a hook 45 provided at the rear end, and a mechanism for folding the seat back 12 forward is provided. A walk-in mechanism is formed in which the leg b can be moved forward by unlocking a slide lock mechanism 68, which will be described later and is connected to the reclining device 13, and the seat slider device 43 is a walk-in slider device. . Further, the upper ends of the leg pieces 37a, 37b are connected by frames 47a, 47b at their front and rear ends,
Members 48a and 48b are provided in the middle of the frame.
has been passed. A rotating plate guide member 49 whose outer peripheral edge 49a engages with the engagement step 19a of the rotating plate 19 is fixed on the members 48a and 48b, and the rotating shaft 18 is loosely fitted into the center of the rotating plate guide member 49. A cylindrical support shaft 50 is fixed. Further, a latch 52 serving as a rotation locking mechanism having a substantially crank shape is pivotally attached to the substantially center of one of the members 48b via a latch holder 51, and its tip 52a is connected to the lock holes 20a, 22.
a or 20b, 22b.

The lock 52 is operated by the leg pieces 37a, 3.
This is done by a rotating lever 53a formed by penetrating the leg piece 37a and being bent into a substantially L-shape at one end of a shaft 53 which is rotatably pivotally mounted between the legs 7b. That is, the latch 52 of the shaft 53
The proximal end 5 of the first link 54 is located at the portion corresponding to the
4a is fitted and fixed, and the tip 54b of the link 54
A base end 55a of a link pin 55 is fitted into and fixed to the latch 52, and a tip 55b of the link pin 55 is loosely fitted into a long hole 56a formed in a latch guide 56 protruding from one side of the latch 52. Rotating lever 5
3a, the tip 52a of the latch 52 is inserted into the lock holes 20a, 22a (or 20b, 22b), and the rotary plate 19 is unlocked. Also, one protruding end 57a of the support shaft 57 that pivotally supports the latch 52 on the latch holder 51 and the shaft 5
A return spring 5 is provided at the tip 53b of each of the springs 5 and 3.
8 and 59 are interposed, and the latch 52 is biased so that it always returns to its original position, that is, the position where it locks the rotary plate 19, when the rotary lever 53a is released. (See FIGS. 4 to 6) Also, near the inner side of the leg piece 37a of the shaft 53, there are base ends 60a, 61a of a second link 60 and a third link 61.
are fitted and fixed, respectively, and the second link 60
The reclining lever 27 is located at the tip 60b of the
A hooking member 63 is fixed to one end of a wire 62 that connects the two, and is pivoted by a pin 64. 6
Reference numeral 5 denotes a bracket that slidably supports the vicinity of the pivot point of the wire 62, and is fixed to the inner surface of the leg piece 37a. A latching member 66 having a long hole 66a is fixed to the other end of the wire 62, and the latching member 66 is connected to an arm portion extending rearward below the base end of the reclining lever 27 by means of a pin 67. 27a so as to be slidable.

Reference numeral 68 denotes a first seat slide lock mechanism, which is a slide lock mechanism, and is provided at the rear lower end of the leg piece 37a, and has a substantially L-shape, and its operating portion 69a protrudes to the side of the leg piece 37a. The main body portion 69b of the operating lever 69 is rotatably attached to the inner surface of the leg piece 37a via a bracket 71, and the base end 69b' has a locking pin 70. spring 7
2 is interposed, and the operating portion 69 of the operating lever 69
It is biased to return to its original state when you release a. or,
A lock pin 70 is attached to the inner surface of the leg piece 37a below the pivot point of the operating lever 69 via a bracket 73 so as to be slidable in the left-right direction, and its tip 70a is bored into the leg piece 37a and the slider 41a. A plurality of lock holes 7 are drilled in the fixed rail 40a through through holes (not shown).
4, and the lock pin 70 is operated by operating the operating lever 69 or the rotary lever 53a. That is, the base end of a link 75 is fixed to a portion of the operation lever 69 located above the lock pin 70, and its tip 75a passes through a through hole 73a formed in the bracket 73 and connects to the lock pin 70.
The lock pin 7 is engaged with a locking hole 70b drilled in the
The tip 70a of the lock pin 70 is inserted into the lock hole 74 to unlock the first seat slide lock mechanism 68, which is a slide lock mechanism, and the rear end 7 of the lock pin 70
A hooking member 76 fixed to the other end of the wire 33 that connects the link 34 fixed to the device arm 26 is attached to 0c by a pin 77, and a long hole 78a is formed in one end of the wire 33. A hanging member 78 is fixedly attached to the hanging member 78.
is slidably attached to the tip 34a of the link 34 by a pin 79, and when the seat bag 12 is folded forward, the wire 33 is pulled and the lock pin 7
Similarly to the above, the tip 70a of the sheet is inserted into the lock hole 74 to unlock the first seat slide lock mechanism 68, which is a slide lock mechanism. A bracket 80 slidably supports the vicinity of one end of the wire 33 and the vicinity of the other end of the wire 62, and is fixed to the device plate 23.

Reference numeral 81 denotes a second seat slide lock mechanism which is a rotating slide lock mechanism, and is composed of an operation piece 82 having a substantially inverted L shape with a horizontal portion 82a at the top and a lock pin 83. A support shaft 84 is fixed to the inside of the curved portion, and the support shaft 84 is
The horizontal portion 82a of the operation piece 82 is connected to the shaft 5.
3, and the third link 6
It is rotatably attached to the inner surface of the leg piece 37a via a bracket 85 so as to be in a position where it can be pushed down by the tip 61b of the leg piece 37a. Further, the lock pin 83 is attached to the lower part of the inner surface of the leg piece 37a to which the operation piece 82 is attached, via a bracket 86, so as to be slidable in the left-right direction.
a passes through a through hole (not shown) drilled in the slider 41a and is located between the slider 41a and the fixed rail 40a, and when the rotary lever 53a is operated, the fixed rail 40a
Among the plurality of lock holes 74 formed in the seat, when the seat a is located at the frontmost position by the seat slider device 43, it is fitted into the front end lock hole 74a. Also, when the seat a is at the rearmost position, the lock pin 70 is in the lock hole 74b, and the lock pin 83 is in the lock hole 74 just before it.
c, lock pin 70 and lock pin 83 are 1
The holes are offset. That is, the vertical portion 82b of the operation piece 82 is connected to a through hole 86 formed in the bracket 86 to which the lock pin 83 is attached.
a, its lower end 82b' is engaged with an engagement hole 83b formed in the lock pin 83, and the seventh
As shown in the figure, when the horizontal part 82a of the operating piece 82 is pushed down by the tip of the third link 61, the lower end 82b' of the vertical part 82b of the operating piece 82 rotates outward about the support shaft 84. and this causes
The locking pin 83 also moves outward and its tip 83
a is inserted into the lock hole 74a. Reference numeral 87 is a return spring interposed at one end of the support shaft 84, which normally maintains the lock pin 83 in the released state.

Now, when the rotary lever 53a is rotated in the X direction, the first link 54, the second link 60, and the third link 61 are simultaneously rotated to X',
When the first link 54 rotates in the X' direction, the latch 52 locks into the lock holes 20a, 22a (or 20b, 22).
b) When the seat is recessed further, the lock of the rotary plate 19 is released and the seat a can be rotated. Incidentally, when the rotary plate 19 is unlocked,
A push-out lever 89, which has flanges 89a and 89b erected diagonally around a support shaft 88, is rotatably pivoted near the latch 52 so that the sheet a can make an elastic initial rotation. In addition, a stopper pin (not shown) is provided on the lower surface of the rotary plate 19 to press against the flanges 89a and 89b, and a stopper member 90 made of an elastic body is provided near one side of the extrusion lever 89, and the extrusion It is also possible to make the initial rotation of the seat a by the elastic force of a spring 91 locked to one side of the lever 89, and also to be able to know the direction of rotation of the seat a.

When the second link 60 rotates in the X'' direction, the wire 62 is pulled in the P direction and the reclining lever 2
7 rotates in the Y direction. Reclining lever 2
7 rotates in the Y direction, the meshing gear 26a of the device arm 26 and the meshing gear 31a of the lower tooth 31
This causes the seat back 12 to fall forward. When the seat back 12 falls forward, the device arm 26 also falls forward, and accordingly, the link 34 fixed to the device arm 26
rotates in the Z direction, the wire 33 is pulled in the Q direction, which pulls the lock pin 70 in the Q' direction without operating the operating lever 69, and the lock pins 70 are Of the lock holes,
For example, the first seat slide lock mechanism 68, which is a slide lock mechanism, is unlocked by recessing through the lock hole 74b at the rear end, but while the lock is being released, the third link 61 is rotated in the X direction. In order to move the lock pin 83 outward via the piece 82 and insert it into the lock hole 74c immediately before the lock hole 74b at the rear end drilled in the fixed rail 40a, the second lock pin 83, which is a rotating slide lock mechanism, is inserted. Since the seat a is locked by the second seat slide lock mechanism 81, the seat a does not move forward. still,
In this embodiment, a link (second link 60) to which one end of the wire 62 for tilting the seat bag 12 forward is pivotally connected, and a second link which is a rotation slide lock mechanism are used.
Although a link (third link 61) for operating the seat slide lock mechanism 81 is provided separately, the links are combined into one to operate the second seat slide lock mechanism 81 which is a rotation slide lock mechanism. One end of the wire 62 may be pivotally connected to the link (third link). When the seat a is then rotated, the tip 52a of the latch 52 comes into contact with the lower surface 21a of the latch pressing portion 21 formed on the rotary plate 19. Therefore, even if the rotation lever 53a is released at this point, the latch 52 will remain in the depressed state when the rotation of the sheet a is completed, that is, the opposite lock hole 20
b, 22b (or 20a, 22a) until the latch 52 is engaged. Therefore, the rotation lever 53a also remains in the operating state, and thereby the seat bag 12 is tilted forward and the second seat slide lock mechanism 81, which is the rotation slide lock mechanism, is also locked.
The rotation can be continued until the rotation of the sheet a is completed. When the seat back 12 is raised after the rotation of the seat a is completed, the seat a is locked again by the first seat slide lock mechanism 68, which is a slide lock mechanism, and the rotation lever 53a is also returned to its original position.
The second seat slide lock mechanism 81, which is a rotation slide lock mechanism, is unlocked.

Further, when moving the seat a forward without rotating it, by operating the operating lever 69 of the first seat slide lock mechanism 68, which is a slide lock mechanism, the seat back 12 is moved forward together with the leg b without being tilted forward. In addition, when the seat back 12 is moved forward to move the seat a forward, if the seat back 12 is moved forward by operating the reclining lever 27, one end can be attached to the link 34 fixed to the device arm 26. The lock pin 70 is pulled by the attached wire 33 to release the lock, and the seat a
can be moved forward together with leg b.
Then, if you release the operating lever 69 at the appropriate position or raise the seat back 12, the lock pin 70 will be released.
protrudes and engages with a suitable lock hole among the lock holes 74, allowing the position of the seat a to be adjusted.

As described above, according to the present invention, the seat equipped with a rotating device is provided with a rotating slide lock mechanism that can lock the seat slide by operating a rotating lever, so that the seat can be adjusted in its position in the longitudinal direction. It can also be equipped with a walk-in slider device, which can improve usability.

Further, according to the present invention, the seat rotation lock mechanism and the seat back folding forward mechanism are interlocked, so that even if the seat is rotated with the seat back folded forward by operating the rotation lever, the rotation slide lock mechanism will not rotate the seat. Since forward movement is prevented, the seat can be rotated in a stable state.

Furthermore, according to the present invention, when the seat is in a rotatable state, the seat back is tilted forward, making it impossible to sit on the seat, thereby further improving the safety of the occupant.

Furthermore, according to the present invention, even if a rotating slide lock mechanism is provided, by operating the slide lock mechanism or the seat bag forward, the seat can be walked in in the same manner as before, and the position of the seat in the front and back direction can be freely adjusted. It also has this effect.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a rotary seat equipped with a walk-in slider device according to the present invention, FIG. 2 is a sectional view showing the assembled state of the seat cushion and leg, and FIG. 3 is a reclining device. 4 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 as the above; FIG. 6 is a partially enlarged rear view of the same as the above when the lock is released. , FIG. 7 is an enlarged front view showing the relationship between the second slide lock mechanism and the third link. 11 is a seat cushion, 12 is a seat bag, 13 is a reclining device device, 19 is a rotating plate, 33 and 62 are wires, 43 is a seat slider device, 49 is a rotating plate guide member, 52 is the latch, 53 is the shaft, 5
3a is a rotation lever, 68 is a first seat slide lock mechanism which is a slide lock mechanism, and 81 is a second seat slide lock mechanism which is a rotation slide lock mechanism.

Claims (1)

[Scope of Claims] 1. A rotating device that allows the seat to rotate freely, a rotation lock mechanism that locks the rotation of the rotating device, a seat slider device that allows the seat to slide forward and backward, and a slide of the seat slider device. A seat slide lock mechanism that locks the seat back in an appropriate position, and a seat back folding mechanism that tilts the seat back forward from a seated state are provided, and the seat back folding mechanism is connected to the slide lock mechanism so that the seat back is folded forward. In a rotating seat with a walk-in slider device, which is provided with a walk-in mechanism in which the seat slide lock mechanism is unlocked and the seat slides forward, in addition to the seat slide lock mechanism, the seat slide lock mechanism is unlocked and the seat slides forward. A rotating seat slide locking mechanism is provided for locking the rotating seat, and the rotating seat sliding locking mechanism is normally in a sliding lock release state, and the rotating seat slide locking mechanism and the rotating seat slide locking mechanism are arranged in such a manner that the rotating seat slide locking mechanism is in a sliding lock state when the rotation lock is released. The seat back tilting mechanism and the rotating seat slide lock mechanism are linked together, and the seat back tilting mechanism and the rotating seat slide locking mechanism are linked so that the seat back falls forward when the rotation lock is released. Double lock structure of rotating seat with walk-in slider device.