JP2000103271A - Inverted seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inverted seat invertable with small force. SOLUTION: This inverted seat has a rotary support means for rotatably supporting one side part side of a seat 15 on the floor side and a tumble lock means for prohibiting rotating of the seat 15 from the upper rail (floor) 105, 205 side on the other side part side of the seat 15. In this case, a striker (the engaging object part) 331 of the lock means is arranged on the seat 15 side, and tumble lock mechanisms 341, 343 lockable on and releasable from the striker 331 are arranged on the upper rail 105, 205 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide device comprising a lower rail provided on a floor side, an upper rail movably engaged with the lower rail, a sheet provided on the upper rail of the slide device, and one of the sheets. An inverted sheet having rotation support means for rotatably supporting the end of the sheet with respect to the upper rail of the slide device, and locking means for inhibiting rotation of the sheet from the upper rail at the other end of the sheet. About.

[0002]

2. Description of the Related Art A rear seat of a vehicle such as an RV vehicle will be described with reference to FIG. In the figure, a seat 3 is a seat cushion 1 for supporting a passenger's buttocks and a seat back 2 for supporting a passenger's back.
It consists of

The slide device 4 includes a lower rail 4b fixed to the floor, and an upper rail 4a movably engaged with the lower rail 4b and provided with the seat 3.

On the front edge side of the seat cushion 1,
Rotation support means 5 for rotatably supporting the seat 3 with respect to the upper rail 4a of the slide device 4 is provided, and lock means 6 for preventing rotation of the seat 3 from the upper rail 4a side are provided on the trailing edge side. I have.

The rotation supporting means 5 comprises a bracket 5a provided on the upper rail 4a, and a shaft 5b provided on the front edge side of the lower surface of the seat cushion 1 of the seat 3 and rotatably supported by the bracket 5a. .

The lock means 6 includes a striker 6a as an engaged portion provided on the upper rail 4a, and a lock mechanism 6b provided on the rear edge of the lower surface of the seat cushion 1 of the seat 3 and capable of engaging and disengaging with the striker 6a. Consists of

As a configuration of the lock mechanism 6, for example, there is a lock mechanism that includes a hook and a latch used in a door lock mechanism. Sheet 3 having such a configuration is
As shown in FIG. 7 (a), the seat back 2 of the seat 3 is tilted forward, and as shown in FIG. 7 (b), the entire seat 3 which has been tilted forward is slid to the foremost position using the slide device 4. Thus, the luggage space in the longitudinal direction of the vehicle can be expanded.

[0008] Further, as shown in FIG.
By unlocking the lock mechanism 6b engaged with the a, the seat 3 that has fallen forward is flipped up about the shaft 5b of the rotation support means 5, and the luggage space in the height direction of the vehicle can be enlarged.

[0009]

However, the inverted sheet having the above structure has the following problems. (1) The heavy lock mechanism 6b is connected to the seat cushion 1.
Since it is provided on the trailing edge side, that is, on the rotating end side, a large force (rotational moment) is required when the seat 3 is inverted.

Therefore, when the sheet is inverted by the urging means, an urging means having a large urging force is required, and the cost is increased. Further, even when the seat is manually inverted, a large operation force is required, and the operability is poor.

(2) Oil such as grease is applied to the movable part of the lock mechanism 6b. Seat 3 for inverted exercise
Since the lock mechanism 6b is provided on the side, the fats and oils of the lock mechanism 6b tend to adhere to the occupant who inverts the seat 3.

When the seat 3 is turned over, the entire lock mechanism 6b is exposed to the outside as shown in FIG. 7 (c).
Oil and fat easily adhere to occupants. The present invention has been made in view of the above problems, and a first object of the present invention is to provide an inverted sheet that can be inverted with a small force.

A second object is to provide a clean inverted sheet.

[0014]

According to the first aspect of the present invention, there is provided a lower rail provided on a floor side,
A slide device comprising an upper rail movably engaged with the lower rail, a sheet provided on the upper rail of the slide device, and one end side of the sheet rotatably supported by the upper rail of the slide device. An inverted sheet comprising: a rotation support means; and a lock means for inhibiting rotation of the sheet from the upper rail at the other end of the sheet, wherein an engaged portion of the lock means is provided on the sheet side. An inverted seat provided with a lock mechanism capable of engaging and disengaging the engaged portion on the upper rail side of the slide device.

Since the engaged portion of the light locking means is provided on the side of the sheet performing the inversion movement, the sheet can be inverted with a small force. Therefore, when the sheet is inverted by the urging means, only the urging means having a small urging force is required, and the cost is reduced.

Further, even when the seat is inverted manually, only a small operation force is required and the operability is good. Further, since the lock mechanism to which the oil or fat is applied is fixed to the floor side, it is clean.

According to a second aspect of the present invention, in the first aspect of the invention, the upper rail is formed by stacking two plate members, and the lock mechanism is provided between the two plate members. It is an inverted sheet.

As compared with a configuration in which an independent lock mechanism assembly is mounted on the upper rail, the space is reduced and the number of parts is reduced by providing the lock mechanism between the two plates constituting the upper rail.

Further, as compared with a configuration in which an independent lock mechanism assembly is attached to the upper rail by using mechanical connecting means such as bolts, the lock mechanism is provided between the two plate members constituting the upper rail, so that the seat can be mounted on the seat. Since the acting force is directly transmitted to the upper rail, the strength is increased.

[0020]

Embodiments of the present invention will be described with reference to the drawings. (Overall Configuration) First, the overall configuration will be described with reference to FIG. 1 which is an exploded perspective view of the inverted sheet of the embodiment.

The seat 15 includes a seat cushion 11 for supporting the occupant's buttocks and a seat back 13 for supporting the occupant's back. The reclining device 51 that adjusts the tilt angle of the seat back 13 with respect to the seat cushion 11 supports the seat back 13 so as to be tiltable with respect to the seat cushion 11, like a reclining device provided on a seat having a walk-in mechanism. The seat cushion 11 includes a reclining lock mechanism (not shown) for inhibiting tilting of the seat cushion 11, and a spring 53 for urging the seat back 13 in a direction overlapping with the seat cushion 11 (a forward tilting direction).

The reclining lock mechanism is unlocked by a reclining operation lever 55. A set of slide devices 10 arranged side by side on the floor to slide the seat 15 against the floor
1, 201, like the seat having the walk-in mechanism, lower rails 103, 203 provided on the floor side.
And the upper rails 105, 2 on which the seat 15 is provided are slidably engaged with the lower rails 103, 203.
05 and a slide lock mechanism 20 provided on one of the slide devices 201 to prohibit the movement of the upper rail 205.
7 are provided, and one end is provided with an upper rail 105,
205, and the other ends are lower rails 103 and 203.
Springs 109, 209 (springs 10)
9 are not shown), the upper rails 105 and 205 are urged forward.

The upper rails 105, 2 according to the present embodiment.
05 is configured by stacking two plate members.
That is, the upper rail 105 is
5 ', 105 ", and the upper rail 205 comprises an upper rail 205', a kana 205".

In the inverted seat of the present embodiment, the operation of the slide lock mechanism 207 is controlled by the seat cushion 1 of the seat 15.
1 is provided on the lower surface on the leading edge side of the slide operation lever 22.
1 and a cable 223 for transmitting the operation force of the slide operation lever 221 to the slide lock mechanism 207.

Tumble device 30 for flipping up sheet 15
1 has the following configuration. Slide device 10
On the front side of the 1,201 upper rails 105,205,
A rod 307 is provided using the brackets 303 and 305, and a tumble hold 309 is fixed to an intermediate portion of the rod 307.

The tumble arm 315 is provided with a hinge pin 311 arranged in parallel with the front edge of the seat cushion 11 of the seat 15 by using a push nut 313.

The hinge pin 311 has a tumble arm 3
15 is provided rotatably, a bracket 17 attached to the tumble arm 315 is provided on the lower surface of the seat cushion 11 of the seat 15, and the front edge side of the seat cushion 11 of the seat 15 is parallel to the front edge of the seat cushion 11. It is supported rotatably about a shaft (hinge pin 311).

A spring 321 is attached to the hinge pin 311.
Is wound, and both ends of the spring 321 are locked to the tumble arm 315, and the middle portion is
By engaging with 09, the seat 15 is urged in a direction to invert.

At the rear of the upper rails 105 and 205 of the slide devices 101 and 201, tumble lock mechanisms 341 and 343 are provided as lock mechanisms of lock means for inhibiting rotation of the seat 15 from the floor side.
On the lower surface of the rear edge side of the seat cushion 11 of No. 5, strikers 331, 333 (the striker 333 is not shown) are provided as engaged portions to which the tumble lock mechanisms 341, 343 are disengaged.

As shown in FIG. 2, a reclining operation lever 5 is provided on the back of the seat back 13 of the seat 15.
5 is provided with a lock release lever 54 for transmitting an operation force.

Next, the reclining device 51 will be described with reference to FIG. In the drawing, a lower arm 56 is fixed to the seat cushion 11 of the seat 15, and an upper arm 5 is attached to the seat back 13.
7 is fixed.

A hinge pin 59 which is loosely fitted in a hole provided in the lower arm 56 is fixed to the upper arm 57, and the upper arm 57 (seat back 13) is connected to the lower arm 56.
(Seat cushion 11).

The inner end of the spring 53 has a hinge pin 59
And an outer end portion of the pin 6 provided on the lower arm 56.
0, the upper arm 57 is urged in a direction overlapping the lower arm 56, that is, the seat back 1
3 is urged in a direction overlapping with the seat cushion 11 (forward falling direction).

The operating force of the lock release lever 54 provided on the back of the seat back 13 is controlled by the cable 61, the first
Is transmitted to the reclining operation lever 55 through the arm 63, the second arm 65, and the third arm 67. That is, when the lock release lever 54 is pulled up, the cable 61, the first arm 63, the second arm 65, and the third arm 67 move in the directions of the arrows, respectively, and pull up the reclining operation lever 55, thereby causing the reclining device 51 to recline. The lock mechanism is unlocked.

When the reclining lock mechanism of the reclining device 51 is unlocked while the occupant is not seated, the seat back 13 (upper arm 57) falls forward by the urging force of the spring 53.

(Slide Lock Release Mechanism) Next, FIG.
The slide lock release mechanism will be described with reference to FIG. As shown in FIG. 3, a plate 403 which engages with a hinge pin 59 fixed to the upper arm 57 and rotates integrally with the upper arm 57 allows one end of a link 407 to rotate using a pin 405. It is installed. The other end of the link 407 is
09 and L provided rotatably on the lower arm 56.
A slide lock release lever 411 having a U-shape is rotatably attached to one rotation end using a pin 413.

A slide lock cable 501 connected to a slide operation lever 221 provided on the seat cushion 11 is connected to the other rotation end of the slide lock release lever 411.

Therefore, as shown in FIG. 4, when the seat back 13 of the seat 15 falls forward and the link 407 is pulled upward, the slide lock release lever 411 rotates about the pin 409, and the slide lock cable 501 is rotated.
Is pulled, the slide operation lever 221 moves in the unlock direction, and the slide lock mechanism 207 is unlocked. (Tumble lock mechanism) Tumble lock mechanism 341, 34
3 have the same configuration, so that the slide device 10 is used with reference to FIG.
The tumble lock mechanism 341 on the first side will be described.

The tumble lock mechanism 34 of the present embodiment.
1 is provided between the two upper rails 105 ', 105 ". A hook 3 rotatably provided between the two upper rails 105', 105" using a pin 351.
A lock groove 353a and a lock protrusion 353b with which a striker 331 provided on the seat cushion 11 can be engaged are formed on the 53.

Adjacent to the hook 353, a ratchet 355 having a lock projection 355a that can be disengaged from the lock projection 353b of the hook 353 is arranged. The ratchet 355 is fixed to a pin 357 rotatably provided between the two upper rails 105 ', 105 ".

One end of the hook 353 has an upper rail 10
5, a spring 3 whose other end is locked by a hook 353.
59, it is urged in the direction of arrow I in FIG. Pin 357 projecting outside of upper rail 105 '
, A cancel link 361 is fixed. It is wound around a pin 357, and one end is
Further, the ratchet 355 is moved by the spring 363 having the other end locked to the cancel link 361 as shown in FIG.
Is urged in the direction of arrow II.

A cable locking pin 365 is fixed to the rotation end of the cancel link 361. next,
The operation of the tumble lock mechanism 341 will be described with reference to FIGS.

FIG. 5A shows an unlocked state in which the striker 331 provided on the seat cushion 11 is not engaged with the lock groove 353a of the hook 353.

Here, when the sheet 15 which has fallen forward is returned and the striker 331 is pressed against the hook 353,
The striker 331 presses the lock groove 353 a of the hook 353, and the hook 353 rotates in the anti-I direction against the urging force of the spring 359.

When the lock projection 353b of the hook 353 gets over the lock projection 355a of the ratchet 355, as shown in FIG.
a, the return of the hook 353 to the original position is prohibited,
It is locked.

In order to release this locked state, the cancel link 361 is pressed against the urging force of the spring 363.
Rotate in the II direction to lock the ratchet 355
5a is separated from the lock projection 353b of the hook 353, so that the hook 353 is biased by the spring 359.
Return to unlocked state. (Tumble lock release mechanism) The tumble lock release mechanism will be described with reference to FIG.

As shown in the figure, a shaft 701 is rotatably provided on the rear edge side of the seat cushion 11 of the seat 15. One end of the shaft 701 is inserted with the lower arm 56, and an L-shaped tumble operation lever 703 is fixed thereto.

The other end side, as shown in FIG.
A tumble lock release lever 707 is fixedly inserted through a bracket 705 provided on the seat cushion 11 and rotatably supporting the seat back 13.

Therefore, the operation force applied to the tumble operation lever 703 is also transmitted to the tumble lock release lever 707. One end of a tumble lock cable 503 is connected to the rotation end of the tumble operation lever 703, and the other end of the tumble lock cable 503 is connected to the cancel link 3 of the tumble lock mechanism 341.
It is locked by 61 cable locking pins 365.

One end of a tumble lock cable 503 ′ is connected to the rotating end of the tumble lock release lever 707. The tip of the tumble lock cable 503 ′ is connected to a cable link of a cancel link (not shown) of the tumble lock mechanism 343. Locked to the stop pin.

The tumble lock mechanisms 341 and 343 are locked, that is, the strikers 331 and 333 provided on the seat cushion 11 are locked.
343, the tumble operation lever 70
3 lifts the tumble lock release lever 707 and also rotates the tumble lock cables 503,5.
03 'is subtracted.

When the tumble lock cable 503 is pulled, the cancel link 361 of the tumble lock mechanism 341 rotates in the anti-II direction against the urging force of the spring 363, and the tumble lock mechanism 341 is unlocked.

Similarly, the tumble lock cable 503 '
As a result, the tumble lock mechanism 343 is also unlocked. (Overall operation) When the reclining operation lever 55 or the lock release lever 54 of the reclining device 51 is operated in a state where the occupant is not seated, the seat back 13 of the seat 15 falls forward due to the urging force of the spring 53.

When the seat back 13 falls forward, the slide lock cable 501 is pulled. When the slide lock cable 501 is pulled, the slide lock mechanism 207 is unlocked, and the springs 109 and 209 are released.
, The upper rails 105, 205 of the slide devices 101, 201 slide toward the foremost position.

After the upper rails 105, 205 have been slid to the foremost position, the tumble operation lever 703 is lifted upward, whereby the tumble lock mechanisms 341, 343 are unlocked.

Then, the seat 15 is flipped up about the hinge pin 11 by the urging force of the spring 321 of the tumble device 301, and the seat 15 is inverted. According to the above configuration, since the strikers 331 and 333, which are engaged portions of the locking means having a small weight, are provided on the seat 15 performing the inversion motion, the seat 15 can be inverted with a small force.

Therefore, the spring 321 of the tumble device 301 may be a spring having a small urging force, and the cost is reduced. Further, even when the seat 15 is manually inverted, only a small operation force is required and the operability is good.

Further, since the tumble lock mechanisms 341 and 343 to which oils and fats are applied are fixed to the floor side, they are clean. Further, as compared with a configuration in which an independent tumble lock mechanism assembly is attached to the upper rails 105 and 205, the tumble lock mechanisms 341 and 343 are provided between the upper rails 105 'and 105 "constituting the upper rail 105 and the upper rail 20 constituting the upper rail 205.
By providing the space between 5 'and 205 ", space can be saved and the number of parts can be reduced.

Further, the independent tumble lock mechanism assembly is connected to the upper rail 10 using mechanical connecting means such as bolts.
5 and 205, the tumble lock mechanisms 341 and 343 are provided between the upper rails 105 ′ and 105 ″ constituting the upper rail 105 and the upper rail 20.
5, the force acting on the seat 15 is directly transmitted to the upper rails 105, 205, thereby increasing the strength.

[0060]

As described above, according to the first aspect of the present invention, since the engaged portion of the light locking means is provided on the side of the seat performing the inversion motion, the seat is inverted with a small force. Can be done.

Therefore, when the sheet is inverted by the urging means, only the urging means having a small urging force is required, and the cost is reduced. Further, even when the seat is inverted manually, only a small operation force is required and the operability is good.

Further, since the lock mechanism to which the oil or fat is applied is fixed to the floor side, it is clean. According to the second aspect of the present invention, the lock mechanism is provided between the two plate members constituting the upper rail, thereby saving space and reducing the number of parts as compared with a configuration in which an independent lock mechanism assembly is mounted on the upper rail. Can be performed.

Further, as compared with a configuration in which an independent lock mechanism assembly is attached to the upper rail by using a mechanical connecting means such as a bolt, the lock mechanism is provided between the two plate members constituting the upper rail, so that the seat can be mounted on the seat. Since the acting force is directly transmitted to the upper rail, the strength is increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an inverted sheet according to an embodiment.

FIG. 2 is a diagram illustrating a back surface of the seat back shown in FIG.

FIG. 3 is a diagram illustrating a slide lock release mechanism.

FIG. 4 is a diagram illustrating an operation of a slide lock release mechanism.

5A and 5B are diagrams illustrating a tumble lock mechanism, wherein FIG. 5A is a side view, and FIG. 5B is a cross-sectional view taken along section line CC in FIG.

FIG. 6 is a diagram illustrating the operation of the tumble lock mechanism.

FIG. 7 is a diagram illustrating a conventional example.

[Explanation of symbols]

 15 Seat 105,205 Upper rail 331,333 Striker 341,343 Tumble lock mechanism

Continuation of the front page (72) Inventor Osamu Nagano 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Inside Shiroki Kogyo Co., Ltd. (72) Inventor Shuji Kamiya 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Shiroki Kogyo Co., Ltd. F-term (reference) 3B087 BA02 BB02 CA12

Claims (2)

[Claims] 1. A slide device comprising a lower rail provided on a floor side, an upper rail movably engaged with the lower rail, a sheet provided on the upper rail of the slide device, and one end side of the sheet being the one end. An inverted sheet comprising: rotation support means rotatably supporting the upper rail of the slide device; and locking means for inhibiting rotation of the sheet from the upper rail at the other end of the sheet, An inverted seat, wherein an engaged portion of the locking means is provided on a seat side, and a lock mechanism capable of engaging and disengaging the engaged portion is provided on an upper rail side of the slide device. 2. The inverted seat according to claim 1, wherein the upper rail is formed by stacking two plate members, and the lock mechanism is provided between the two plate members.