JP2001315553A - Attachable/detachable seat structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability of a slide device and an interlock device in an attachable/detachable seat having the slide device and the interlock device. SOLUTION: A spring 10 is interposed between slide wires 11 and 12 of the slide device A, and the operation timing of a lock release by the interlock device B and a lock by the slide device A is made different.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable seat (seat) which is removably installed on a vehicle floor in an automobile.

[0002]

2. Description of the Related Art In a conventional seat of this type, a lower rail constituting a slide device is provided with a latch which engages with a striker on the vehicle floor. An interlock device is provided for locking the upper rail to the lower rail when sliding to a predetermined position.

[0003] With this interlock device, the upper rail is locked to the lower rail when the seat back is folded forward on the seat cushion and the seat is removed from the vehicle floor. Therefore, the seat can be easily removed from the vehicle floor, and the removed seat can be easily carried.

The seat having the interlock device is configured such that the locking of the slide device and the lock of the interlock device are simultaneously operated by the forward tilting operation of the seat back.

That is, the lower end of one side of the seat back and the slide device, and the lower end of the other side of the seat back and the interlock device are connected by wires, respectively, so that the slide device is locked and the interlock device is unlocked at the same time. .

[0006]

The above-described slide device and interlock device are both structured to be locked by engagement by engagement of teeth or the like. Therefore,
Since the conventional device has a structure in which the slide device and the interlock device are simultaneously operated by the falling or standing motion of the seat back, the teeth for locking the slide device are accurately engaged when the interlock device is unlocked. There was a difficult problem.

Further, the wire must be stretched with a constant tension so that there is no play so that the wire can be reliably transmitted to the slide device by the forward movement of the seat back. If the wire does not work or the wire is stretched beyond a certain tension, the wire may be damaged.

In view of the above, the present invention, as described above, allows the locking by the interlock device to be released by the forward tilting operation of the seat back so that the locking by the slide device is reliably performed, and the tolerance management of the wires is facilitated. With the goal.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention locks a seat at a predetermined position with a slide device for adjusting the front and rear position of a seat by a forward movement of a seat back in a seat cushion direction. In the detachable seat in which each of the interlock devices is operated, the slide wire that connects the seat back and the slide device and releases the locked state of the slide device by the forward fall of the seat back expands and contracts in the pulling direction of the slide wire. A spring that intervenes.

With the above configuration, the interlock device starts to operate when the seatback in the forward tilted state is erected. At this time, the lock of the slide lock device is maintained in the locked state, and the lock of the interlock device is released. After the release, the slide lock device operates to be in the locked state.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 shows a frame structure of a detachable sheet according to the present invention, and FIG. 2 shows an exploded view of the same.

A detachable seat is a seat that is detachably installed in a vehicle, and a pair of left and right lower rails (4) in a slide device (4) (4) for adjusting the front-back position of the seat.
1) An engaging member (5) (6) such as a latch is provided before and after in (41), and the engaging members (5) and (6) are detachably engaged with a locking member such as a striker provided on the vehicle floor. Are configured to match.

The detachable sheet is configured to be detached from the vehicle floor when the sheet is at a predetermined front and rear position by the slide devices (4) and (4).
Only at the position where the sheet is removed, the upper rail (40) of the slide device (4) is moved to the lower rail (4).
An interlock device (B) to be locked to 1) is provided.

This interlock device (B) prevents the upper rail (40) from protruding in the length direction of the lower rail (41), and prevents the lower rail (41) from protruding in the length direction from the removed seat. When the removed sheet is carried, the lower rail (41) is locked so that the lower rail (41) does not protrude and is easily carried.

Therefore, when the upper rail (40) is locked to the lower rail (41) by the interlock device (B), the upper rail (40) is locked to the lower rail (41) by the slide device (A). Has been released, but the upper rail (4
0) does not slide with respect to the lower rail (41).

As shown in FIG. 1 and FIG. 2, the detachable sheet according to the present invention is a conventional detachable sheet in which the slide wire for unlocking the slide device (A) is replaced by two slide wires (11) ( 12) and a spring (1) composed of a tension coil spring which expands and contracts in the tensioning direction of the slide wire (1).
0) is interposed between the slide wires (11) and (12).

Therefore, the structure of the interlock device (B), for example, except for the structure in which the spring (10) is interposed, is a conventionally well-known structure.

That is, an example will be described with reference to the drawings. The upper rails (4) of the left and right slide devices (A) are described.
The lower rails (0) and (40) are fixed to the bottom surface of the cushion frame (3), and the lower rails (41) and (41) on which the upper rails (40) and (40) slidably engage are provided with the engaging members ( As shown in FIG. 3, lock teeth (401) are formed downward at inner inner ends (41A) of the left and right lower rails (41) and (41) facing each other. A lock piece (17) meshing with the teeth (401) is rotatably pivoted to the upper rail (40) in the vertical direction by a pin (15A), and lock pieces (17) and (17) of the left and right slide devices (A). 17), a U-shaped main operation lever (15) is integrally formed.

The lock piece (17) is biased by a spring in the direction of the lock teeth (401), and a sub operating rod (16) is integrally connected between the left and right of the main operating lever (15). At the center of the operating rod (16), a substantially L-shaped mounting piece (12) provided at the end of the slide wire (12) is provided.
A) is formed to be connected.

Therefore, when the slide wire (12) is pulled to move the sub operating lever (16) upward or the main operating lever (15) is pulled upward, the left and right lock pieces (17) move downward. And lower rail (41) (4
It is formed so as to be detached from the lock teeth (401) of 1) and released from the lock state by the slide devices (A) and (A).

At the end of the slide wire (11), a connecting piece (11A) having a long hole is provided integrally, and the elongated piece (13) of the extension piece (13) is provided in the long hole of the connecting piece (11A). A pin (13A) is slidably inserted into the extension piece (13).
Is fixed to the lower end of one side bracket (70) of the back frame (7) of the seat back.

A lock hole (402) for an interlock is formed at a predetermined position on the outer end (41B) of the lower rail (41) of the other slide device (A). When the upper rail (40) moves to a predetermined position (a position where the seat can be removed from the vehicle floor), the interlock piece (27) is formed so as to engage with the lever (26). The interlock piece (27) of the lever (26) is urged in the locking direction by a torsion spring (26A), and the interlock wire (20) is pulled by the lever (26). A rotating piece (22) that rotates is connected.

The rotating piece (22) is urged by a tension coil spring (21) so as to press the lever (26) in the direction of the arrow in FIG. However, the elasticity of the tension coil spring (21) is smaller than the elasticity of the torsion spring (26A), and the lever (26) is formed so that the interlock piece (27) urges in the locking direction. This interlock piece (27) is provided with a lock hole (402) provided at a predetermined position of the lower rail (41).
, The upper rail (40) interlocks with the lower rail (41).

The interlock wire (20)
Has one end connected to the rotating piece (22) and the other end provided with a connecting piece (20A) having a long hole, and the connecting piece (20A)
The pin (23) of the extension piece (23) provided in the other side bracket (70) of the back frame (70) in the long hole of the back frame (70).
A) is slidably inserted. (72) in the figure
Denotes an upper frame made of a pipe constituting the back frame (7), and (73) denotes the connecting shaft.

Therefore, when the seat back is moved forward,
The interlock wire (20) is pulled against the elasticity of the tension coil spring (21), the pressing state of the rotating piece (22) against the lever (26) is released, and the interlock piece (27) is moved by the torsion spring (26A). ) Is configured to be urged upward by the elasticity of ().

The left and right lower rails (41) (4)
Engaging members (5) such as latches provided at the front and rear bottoms of 1)
(6) is formed to be detachably attached to a striker (91) provided in a concave portion (90) of the vehicle floor (9), and the upper rail (40) is connected to the lower rail (41) by the interlock device (B). ), The seat is removed from the vehicle floor (9) together with the lower rail (41) only when the seat is removed from the vehicle floor (9). The engagement members (5) and (6) are configured to be detached from the striker (91) by operating an operation lever (not shown) for unlocking.

A reclining device or a forward moving device shown for moving the seat back forward is as follows:
An upper arm (83) which has a lock structure on both sides and is fastened to the left and right sides of a back frame (7) of a seat back to a lower arm (81) (82) fastened to the left and right sides of a cushion frame (3) of a seat cushion on the rear side.
(84) is rotatably connected, and a crankshaft (85) for unlocking is connected to the center of rotation thereof. By rotation of the crankshaft (85), a backing device provided on the left and right is provided by a reclining device or a forward tilting device. The lock of the frame (7) to the cushion frame (3) is released.

The above-mentioned cushion frame (3) also has a conventionally well-known structure, and has side walls (31) standing upright on the left and right.
Mounting portions (31A) and (32) for fastening the lower arms (81) and (82) of the reclining device upward from the rear of the side walls (31) and (32).
A) is extended, the left and right side walls (31) and (32) are integrally connected, and an upper plate (3) is provided between the front portions of the side walls (31) and (32).
3) is integrally welded.

A through hole (19) for inserting a slide wire (12) is formed in the center of the upper plate (33). (16) and the slide wire (12) mounting piece (1).
A locking hole (16A) for locking 2A) is located.

The slide wire (1) is provided on the inner surface of the one side wall (31) and is slidably inserted through a number of guide members (18)... Through the through hole (19) to the sub operation rod (16). Are connected.

Then, two slide wires (11),
The spring (10) is connected between (12).
In the figure, (11B) and (12B) are slide wires (11).
An outer cylinder through which (12) is inserted, and (11C) and (12C) indicate locking rings that lock the spring (10).

On the other hand, on the inner surface of the other side wall (32), a number of guide members (28) (28) through which the interlock wire is slidably inserted are fixedly provided.

Next, the operation of the present invention will be described. FIG. 4 shows a use state of the seat. The seat is installed on the vehicle floor, the tilt angle of the seat back (SB) is arbitrarily adjusted by a reclining device, and Slide device (A)
When the main operating lever (15) is pushed upward, the lock is released by the slide device (A) and the lower rail (41) fixed to the vehicle floor (9) side, the upper rail (40) on the seat side. Slides in the front-rear direction, and the lock pieces (17) on the upper rail (40) side engage with the lock teeth (401) of the lower rail (41) so that the front-rear position of the seat can be adjusted.

In this state, the slide wire (1)
The spring (10) interposed therebetween is contracted, and the slide wires (11) and (12) are stretched without loosening.
On the other hand, the interlock (2) is a tension coil spring (21).
The interlock piece (27) does not engage with the lock hole (402) and is not interlocked.

Then, when the seat back (SB) is moved forward by the reclining device or the forward moving device from this state, the interlock wire (2) is pulled, and the lower portion of the rotating piece (22) is raised, and the lever (22) is raised. (26) is raised by the elasticity of the torsion spring (26A) together with the interlock piece (27). That is, the interlock piece (27) is urged in the locking direction.

At the same time as the interlock wire (2) is pulled, the slide wire (11) is pulled, and the spring (10) is extended. And the spring (1
When 0) extends beyond a certain value, the slide wire (12)
Is pulled by the spring (10), the sub-operating rod (16) connected to the slide wire (12) is lifted upward, and the slide device (A) is unlocked.
The seat is slidable with respect to the lower rail (41) on the vehicle floor side.

Further, when the seat back (SB) is moved forward and overlaid on the seat cushion (SC), the slide wire (11) is pulled and the spring (10) is further extended, and at the same time, the interlock wire (2) is also pulled. As a result, the lower part of the rotating piece (22) rises upward, and the interlock piece (27) presses the lower edge of the lower rail (41) by the elastic force of the torsion spring (26A).

Thereafter, when the seat is moved backward, the interlock piece (27) is moved by the torsion spring (26).
Since the seat is urged by the elasticity of A) as described above, when the seat is positioned at a predetermined position with respect to the lower rail (41), the interlock piece (27) engages with the lock hole (402), and the seat side The upper rail (40) is interlocked integrally with the lower rail (41) on the vehicle floor side.

Next, when the operating lever for removing the lower rail (41) from the striker (91) provided on the vehicle floor (9) side is operated, the engaging members (5) and (6) provided on the lower rail (41) cause the striker ( As a result, the seat can be removed from the vehicle floor (9) together with the lower rail (41).

The seat removed from the vehicle floor (9) is engaged with the striker (91) and locked when the engaging members (5) and (6) are pushed into the recesses (90) of the vehicle floor (9).

Then, when the seat back (SB), which is forwardly stacked on the seat cushion (SC), is raised upright as shown in FIG. 5, the slide wire (1) is loosened and the slide wire (1) is slid by the spring (10). The sub operation lever (16) of the device (A) does not operate. On the other hand, the interlock wire (2) is simultaneously loosened together with the slide wire (1), and the resilient force of the tension coil spring (21) causes the rotating piece (2).
2) is rotated to press the lever (26) downward and rotate the interlock piece (27) downward. Thereby, the interlock piece (27) is released from the lock hole (402), and the interlock is released.

When the seat back (SB) is further raised, the slide wire (1) is loosened.
The tension of 0) is weakened, the lifting force on the sub operation lever (16) of the slide device (A) is lost, and the upper rail (40) is locked to the lower rail (41).

Thereafter, by operating the main operation lever (15), the lock of the slide device (A) is released, and the seat is adjusted to a predetermined front-rear position, and the state shown in FIG. 4 is obtained.

[0044]

According to the present invention, in the detachable sheet with the interlock device, the spring is interposed in the slide wire for unlocking the slide device. Therefore, when the lock of the interlock device is released from the interlock state by the interlock device in the unlocked state of the slide by the slide device, the lock is maintained in the unlocked state in the operation state of the interlock device, and the interlock is released. After the lock release is completed, the slide device operates to be in the locked state.

For this reason, as in the conventional product in which unlocking of the interlock device and locking of the slide device are simultaneously operated, a lock hole of the interlock device, an interlock piece engaging with the lock hole, and a lock tooth of the slide device. And in relation to the lock piece that meshes with this lock tooth,
If the dimensions of the four members do not match, the interlock piece will not come off the lock hole and the slide device will not operate.

That is, even if the assembling accuracy of the interlock device and the slide device is low, the two devices operate reliably, and the productivity of the detachable sheet having both devices is improved.

Further, even if a dimensional error in the length of the slide wire of the slide device occurs, the error is absorbed by the spring. The slide device does not malfunction due to breakage or a long overall length.

Further, since the return force of the spring acts on the seat back when the seat back is raised, the operation force for raising the seat back is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a frame structure of a detachable sheet according to the present invention.

FIG. 2 is a perspective view of a branch of FIG. 1;

FIG. 3 is a partially cutaway perspective view of a slide device and an interlock device.

FIG. 4 is an explanatory diagram of a use state of a seat.

FIG. 5 is an explanatory diagram showing a state in which a seat is installed on a vehicle floor and a seat back is raised.

[Explanation of symbols]

 A slide device B interlock device SC seat cushion SB seat back 10 spring 11 slide wire 12 slide wire

Claims (1)

[Claims] 1. A detachable seat in which a sliding device for adjusting the front / rear position of the seat and an interlock device for locking the seat at a predetermined position are operated by a forward movement of the seat back in a seat cushion direction. A detachable seat structure comprising: a slide wire that connects the slide device to the slide device and releases the locked state of the slide device by the forward fall of the seat back; and a spring that expands and contracts in the pulling direction of the slide wire is interposed. .