JPH11113669A - Seat for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recliner for rear seats of an automobile by disabling seating in mechanism if one tries to do when a rear seat is moved from a seating position. SOLUTION: An interlocking bar 12 is so arranged to be movably pivoted axially on a lever 21 of an operation lever 13. A stopper 14 and a link lever 16 is pivoted on a slider 3 to be vertically movable facing the interlock bar 12. A lock body 6 is movably supported vertically on the slider 3 through a slot 19 at one end part of the link lever 16. A pawl part 7 is formed at a lower part of the lock body 6 to be engaged with or disengaged from an engaging hole 8 of a rail 5. No engaging hole 8 to be engaged with the pawl part 7 is provided on one rail 5 on the inner or outer side to which the slider 3 is moved from the seating position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly, to a seat reclining device which cannot be operated when a seat is out of a seat usage range, thereby ensuring occupant safety from the seat structure. It is something to do.

[0002]

2. Description of the Related Art A rear seat of a wagon vehicle is provided so that the seat can be moved in the front-rear direction of the vehicle body so that a space in a luggage compartment can be increased. That is, a pair of left and right slide rails are fixed to the floor of the vehicle body, and a base plate of the seat reclining device is fixed to a slider that slides by engaging with the slide rails. An engagement hole is formed in the slide rail at two positions, a normal position where the rear seat is to be seated, and an unusual position where the seat is largely moved in the front-rear direction to be used as a luggage compartment. A lock body that engages with and disengages from the engagement hole is provided on the slide rail. That is, when the lock body engages with the engagement hole, the rear seat cannot move, and when the lock body comes off from the engagement hole, the rear seat can move along the slide rail.

[0003] Incidentally, the slide rails are usually provided as a pair on both the left and right sides of the rear seat. Therefore, the lock body is provided on the left and right sides (outer side and inner side).
Of the slide rails, and at the same time, interlock so as to engage and disengage with the engagement holes of the slide rails. And, the movement from the normal position to the non-normal position,
Unless the seat back is tilted by operating the seat reclining device, it cannot be moved.

[0004]

However, when the rear seat is moved from a normal position where the seat can be seated (seating position) to a non-normal position where the seat cannot be seated (moving position),
Since the left and right lock bodies are engaged with the engagement holes of the slide rail, respectively, and the rear seat is locked at the non-normal position, it is not impossible to seat if the seat back is raised and seated. However, if the seat is moved significantly in the front-rear direction, the seat belt provided on the vehicle body side cannot be used, so that even if the user sits down, the seat belt cannot be fastened and the possibility of encountering a danger increases. There is a problem.

[0005] In view of the above, according to the present invention, even if the operation lever of the seat reclining device is operated to take a seat when the rear seat is in the non-normal position, the seat reclining device is locked and the seat back which falls forward may be caused. An automobile seat that cannot be seated because it cannot be seated.

[0006]

In a vehicle seat according to the present invention, a seat back can be tilted by rotating or operating an operation lever to engage or disengage a tooth portion of a tooth member with a tooth portion of a tooth plate. A slider on which the seat reclining device is mounted is slidably engaged with a rail fixed to the vehicle body, and has a lock mechanism for locking the slider to the rail at a normal position and an unusual position. A lock lever is supported on the side surface of the lock member so as to be vertically movable, and a lower portion thereof is detachably provided in an engagement hole provided in the rail, and a link lever whose one end is rotatably mounted on the lock member is provided. A stopper rotatably supported by the slider and rotating with the link lever, one end of the stopper facing the stopper and the other end of the seat recliner By providing the interlocking rod which is pivotally attached to the operating lever and rotatable lever integral grayed device, characterized in that the locking member is inoperable the operating lever when in the unlocked state.

When the seat reclining device moves to the non-normal position, the lock body does not engage with either the outer side or the inner side of the vehicle body, and the one of the locks is not engaged. It is characterized in that the body keeps the unlocked state.

Therefore, when the seat is moved to an unusual position where the seat is not seated, one of the lock members does not engage with the rail, the stopper faces the interlock bar, and the operation lever of the seat reclining device cannot be operated. ,
Since the seat back cannot be raised and cannot be seated, it is safe.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a base plate 2 of a seat reclining device 1 is placed on a slider 3, and the slider 3 has a pair of rollers 4 having rollers 4 on both front and rear sides of the plate and fixed to the vehicle body floor. Each of the rails 5 is inserted into an upper opening groove and provided movably inside the rail 5. A lock mechanism 17 is provided on a side surface of the slider 3, and a lock body 6, which is a part of the lock mechanism 17, is vertically movably supported. A plurality of claws 7 are formed at a lower end of the lock body 6. The pawl 7 is engaged with and disengaged from an engaging hole 8 (see FIG. 3) formed in the inner bottom of the rail 5, so that the slider 3 can be fixed at a normal position (seating position) or an unusual position (moving position). ing.

The slider 3 on the outer side is formed with a horizontal portion 9 bent at a right angle for mounting and fixing the base plate 2, and the horizontal portion 9 has a guide plate 10 having a key shape.
Is fixed, and a guide hole 11 is formed near the upper end of the guide plate 10. An interlock rod 12 slidably engaged with the guide hole 11 extends in a substantially horizontal direction. One end of the interlock rod 12 extends toward the seat reclining device 1 and is rotatably mounted on a part of a lever 21 that is rotatable together with the operation lever 13. The other end is a stopper 14 on the lock body 6 side. Face to face.

As shown in FIGS. 3 and 4, the stopper 14 is rotatably supported coaxially with a link lever 16 which is rotatably mounted on the slider 3 by means of a shaft 15, and is bent in the orthogonal direction. The overhanging portion 14a is urged by a spring 18 wound around the shaft 15 so as to always contact the link lever 16 so as to be able to rotate integrally therewith.
One end of a spring 18 is locked to one end of the link lever 16, and one end of a spring 38 for urging the lock body 6 in the locking direction is formed, and the other end has an elongated hole 19. A pin 20 implanted in the lock body 6 is engaged with the elongated hole 19. The other end of the spring 18 is locked by the stopper 14, and the other end of the spring 18 is locked by the slider 3. The stopper 14 is formed of a substantially U-shaped plate supported on both sides of a shaft 15, and the link lever 16 is plate-shaped.

As shown in FIG. 2, one end of the interlock rod 12 is rotatable via a shaft 22 to a lever 21 which is integrally rotated by being engaged with an operation lever 13 by an engagement portion 21a. The lever 21 is connected to the base plate 2 via a shaft 23 so as to be rotatable. A roller 24 is rotatably supported by a shaft 25 on the base plate 2 side of the operation lever 13, and the roller 24 rotates around the shaft 23 integrally with the operation lever 13. The lower end of the free end of the tooth member 26 is in sliding contact with the roller 24, and the tooth member 26 is rotatably supported by the base plate 2 via a shaft 27.

On the curved upper portion of the tooth member 26, the tooth portion 2 is provided.
A tooth plate 30 having a tooth portion 29 meshed with the tooth portion 28 is rotatably supported on the base plate 2 around a center shaft 31.
The operation lever 13 is rotationally urged by a spring 32 and always presses the tooth member 26 against the tooth plate 30. An arm 39 for fixing the seat plate to the seat back is integrally connected to the tooth plate 30. A pin 33 projects from the arm 39, and a spiral spring 34 having an outer end locked to the pin 33 has a center shaft. The spiral spring 34 urges the arm 39 to rotate forward (toward the front of the vehicle body). Reference numeral 35 denotes a holder plate covering the center shaft 31 and the shafts 23 and 27, and reference numerals 36 and 37 denote cover members that cover side portions of the seat reclining device and the lock mechanism 17. The inner side slider 3 is also provided with the seat reclining device 1 and the lock mechanism 17 similarly to the outer side slider, but is not provided with the interlock bar 12, the stopper 14, and the lever 21.

A pair of the rails 4 is fixed to the floor of the vehicle body. These rails 4 are provided with claw portions 7 of the lock body 6 at positions corresponding to the normal position and the non-normal position of the rear seat.
Is provided on the outer side of the pair of rails 4, 4. The engaging hole 8 with which the claw portion 7 of the lock body 6 is to be disengaged at the non-normal position is provided. Not provided. Therefore, when the rear seat is moving to the non-normal position, the lock body 6 in the inner seat reclining device 1 is engaged with the engaging hole 8 of the rail 4, but the outer seat reclining device 1 is not engaged. The lock body 6 is set to be in a free state because there is no engagement hole 8.

Therefore, the pair of left and right seat reclining devices 1 is configured to be interlockable, and the interlocking structure employs a known means such as a rod or a cable. Further, the interlocking structure of a pair of right and left lock bodies 6, 6 provided in the lock mechanism 17 connects the shafts 15, 15 with a connecting rod (not shown), and connects the link levers 16, 16 to the ends of the shaft 15, respectively. It only has to be fixed. In addition, even in an unusual position where there is no engagement hole 8 to which the outer lock body 6 is to be disengaged, the inner lock body 6 is engaged with the engagement hole 8, so that the connection structure of the outer shaft 15 and the connection rod is provided. A structure is used in which a pin having a pin on one side and a link having a long hole formed on the other side are fixed, the pin and the long hole are engaged, and the pin is moved to one side of the long hole by a spring. The lock of the lock mechanism 17 is released by rotating the connecting rod with an operation lever provided at the front of the seat, but detailed description thereof is omitted.

Next, the operation of the above embodiment will be described.
When the rear seat is in the normal position of the rails 5, 5,
As shown by the solid line in FIG. 3, the claw portion 7 of the lock body 6 is engaged with the engagement hole 8 of the rail 5 and is in a state of being lowered from the slider 3, so that the stopper 14 moves the interlock bar 12 to the horizontal position. It is pivoting lower than.

Therefore, as for the reclining adjustment, when the operation lever 13 is gripped and lifted upward, the lever 21 rotates integrally with the operation lever 13 as shown in FIG. Can be moved in the axial direction without contacting the
Is rotated counterclockwise about the shaft 23 and the roller 2
4 moves downward, the tooth member 26, the free end of which is placed on the roller 24, rotates counterclockwise about the shaft 27, thereby disengaging the teeth 28, 29, The tooth plate 30 and the arm 32 integrally connected thereto are biased by the spiral spring 34 so that the center shaft 3
It rotates in the forward tilting direction around 1.

Then, when the operating lever 13 is released at a desired inclination angle of the seat back, the operating lever 13 rotates clockwise around the shaft 23 by the force of the spring 32 to rotate the roller 2.
4 pushes up the tooth member 26 and the teeth 28 and 29 mesh with each other, whereby the inclination angle is locked. Also,
The lever 21 rotates downward by its own weight and pulls back the interlock bar 12.

Next, when the rear seat is moved to the non-normal position, the seat back is first moved forward by the above-described operation, and then the shaft 15 is rotated by an operation lever (not shown). As shown by, the link lever 16 rotates about the shaft 15, the pin 20 engaging with the elongated hole 19 pulls the lock body 6 upward, pulls the pawl 7 out of the engagement hole 8, and thus the slider 3 Is released, and the slider 3 can move along the rail 5. When the rear seat reaches the non-normal position by moving the slider 3, the claw 7 of the lock body 6 of the inner side lock mechanism 17 is moved.
Is engaged with the engagement hole 8 of the inner rail 5 to lock the rear seat, whereas the outer lock mechanism 17 has no engagement hole 8 with which the claw 7 of the lock body 6 engages. The body 6 maintains the up state. Therefore, the stopper 14 is rotated together with the link lever 16 to a position facing the interlock bar 12. When the lock of the lock mechanism 17 is released while the operation lever 13 of the seat reclining device 1 is pulled, the interlock bar 12 is located above the stopper 14. However, if the operation lever 13 is returned, the interlock bar 12 moves from above the stopper 14 and comes off.
The stopper 14 rotates upward by the spring force of the spring 18.

That is, in this non-normal position, the lock body 6 of the outer lock mechanism 17 is provided with the slider 3 because the rail 5 is not provided with the engagement hole 8.
3, the link lever 16 is rotated to activate the stopper 14 so as to face the interlock rod 12, as indicated by the phantom line in FIG. Reference numeral 17 denotes an unlocked state.

Therefore, even if the operation lever 13 is lifted, the interlock bar 12 is protruded toward the stopper 14 via the lever 21 and collides with the stopper 14 so that the operation lever 13 cannot be operated. Therefore, the seat reclining device 1 cannot be operated in the non-normal position, that is, the seat back cannot be seated because the seat back cannot be raised by unlocking the seat back that is falling forward.

[0022]

According to the present invention described above, when the rear seat is in the non-normal position, even if the operation lever of the seat reclining device is turned, the interlock rod abuts on the stopper and cannot be operated. Therefore, it is not possible to sit on the rear seat in the non-normal position, which is safe.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view of a seat recliner.

FIG. 3 is a front view of a lock mechanism.

FIG. 4 is an exploded perspective view of a lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat reclining device 2 ... Base plate 3 ... Slider 4 ... Roller 5 ... Rail 6 ... Lock body 7 ... Claw part 8 ... Engagement hole 10 ... Guide plate 11 ... Guide hole 12 ... Interlock bar 13 ... Operation lever 14 ... Stopper 14a Projecting portion 15 Shaft 16 Link lever 17 Locking mechanism 18 Spring 19 Elongated hole 20 Pin 21 Lever

Claims (2)

[Claims] 1. A slider on which a seat reclining device which can tilt a seat back by rotating or operating an operation lever to engage or disengage a tooth portion of a tooth member and a tooth plate is fixed to a vehicle body. A lock mechanism that slidably engages with the rail, and locks the slider to the rail in the normal position and the non-normal position, the lock mechanism supporting a lock body on the side surface of the slider so as to be vertically movable. A lower portion thereof is detachably provided in an engagement hole provided in the rail, and a link lever whose one end is rotatably mounted on the lock body is rotatably supported by the slider, A stopper that rotates with the link lever is provided, and one end faces the stopper and the other end is pivotally mounted on a lever that can rotate integrally with the operation lever of the seat reclining device. A vehicle seat, characterized in that the operation lever is made inoperable when the lock body is in an unlocked state by providing a provided interlock bar. 2. When the seat reclining device moves to an unusual position, the rail does not engage with either the outer side rail or the inner side rail of the vehicle body. 2. The vehicle seat according to claim 1, wherein the vehicle retains an unlocked state.