JPH0224691B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a walk-in device for a vehicle seat, and in particular, the seat back of a sliding seat that slides forward is locked in a forward-folded state in a position other than the rear most position, so that an occupant can This invention relates to a seat walk-in device that prevents people from accidentally sitting on the seat.

Conventionally, in the case of two-door vehicles such as passenger cars and trucks,
When getting in and out of the back seat, the passenger's sliding seat was slid forward. If this amount of sliding is large, the knee space between the sliding seat and the instrument panel will be quite narrow, but if you slide the seat back of the sliding seat in an upright position, the passenger may mistakenly think that he or she can sit down and sit down. There was a risk that people would complain that they could not sit down because their knees would hit the instrument panel.

Further, Japanese Utility Model Application No. 59-43220 discloses a locking device for a seat bag, but this conventional example has a bracket and a check lever used to lock or unlock the seat bag.
Since the metals were in contact with each other through pins that did not involve rolling, there was a problem in that the operation was not smooth.

The present invention has been made in order to eliminate the drawbacks of the prior art described above, and its purpose is to move the sliding seat forward in order to get in and out of the rear seat in a two-door vehicle such as a passenger car or truck. When sliding the seat back, the seat back is locked in a forward-folding position when the seat is not in the rear most position, thereby preventing the passenger from pretending to be able to sit on the sliding seat when the knee space relative to the instrument panel is extremely narrow. The aim is to prevent misunderstandings and complaints. Another purpose is to prevent occupants from sitting in places where the knee space relative to the instrument panel is extremely narrow, thereby preventing occupants from riding in such tight conditions that their knees may hit the instrument panel. The goal is to improve vehicle safety. Another object of the present invention is to bring a cam member used for locking or unlocking the seat back into contact with a link member through a roller pivotally connected to the link member, so that the roller is engaged with the cam member and driven. By this,
To enable extremely smooth locking and unlocking of a seat bag.

Still another object is to improve safety by providing the link member and cam member of the seat backlock device inside the fixing member and the seat track so that these members do not protrude to the outside. The objective is to improve the appearance of the sheet.

In short, the present invention provides a slide seat including a seat cushion and a reclinable seat bag, a seat track fixed to the seat cushion of the slide seat and slidably inserted into a fixing member, and a seat back arm that is fixedly fixed to a seat and has a recess formed therein and is swingable relative to the seat track; and a seat back arm that has a releasably engaged protrusion formed in the recess and is pivotably pivoted to the seat track. A locking member is connected to the locking member by a wire and a cam member is fixed to the inside of the fixing member. A roller that engages with and follows a cam portion of the cam member in order to engage and disengage the convex portion of the stop member from the recessed portion of the seat back arm is pivotally mounted at the intermediate portion and is rotatable inwardly of the seat track. a seatback locking device having a link member pivotally connected to the seatback arm; a claw fixed to the fixing member; and a seatbacklock device pivotally connected to the seattrack and connected to the seatback arm by a wire and interlocked with the seatback arm. A seat track locking device is provided with a locking arm to which the locking pawl and a detachable locking plate are integrally fixed, and the seatback is configured to be locked in a forward tilted state when the seatback is in a position other than the rear most position. It is characterized by:

The present invention will be explained below based on embodiments shown in the drawings. What is shown in Fig. 1 is a two-door vehicle 1, which is equipped with a handle 2 on the right side (right side in the direction of travel) with respect to the direction of arrow A when viewed from above, and a slide seat 3 that slides forward and backward on the left side. has been done. When the passenger wants to sit in the rear seat 4, the sliding seat 3 is slid (walked in) from the rearmost position, so-called rear most position R, to the most forward position, so-called front most position F. The details will be explained below.

The seat walk-in device 6 according to the present invention includes:
It consists of a slide seat 3, a seat track 7, a seat back lock device 8, and a seat track device 9, and the slide seat 3 includes a seat cushion 11 and a seat back 12.
The seat bag is designed to be able to swing back and forth relative to the seat cushion 11.

As shown in FIG. 2, the seat track 7 consists of a left seat track 7a and a right seat track 7b, which are provided on the left and right in the direction of arrow A when viewed from above, and these seat tracks are connected to the seat cushion 11. It is fixed and slidably fitted into fixing members 13 and 14 arranged on the left and right sides, and is biased in the direction of arrow B by a first tension spring 15.

The seat back lock device 8 includes a seat back arm 16, a locking member 17, and a link member 18.
As shown in the figure, it consists of a left seat back arm 20 and a right seat back arm 21, which are provided on the left and right sides in the direction of arrow A when viewed from above. It is fixed.

At the lower end of the left seatback arm 20, a fan-shaped toothed portion 20a and a recessed portion 20b are formed on the extension of the toothed portion. Further, the left seat back arm 20 is connected to the seat track 7a as shown in FIG.
It is biased to rotate counterclockwise (forward tilting direction) by a spiral spring 23 wound around a pivot shaft 22 pivotally connected to the shaft 22 . A reclining lever 24 is fixed to the pivot shaft 22 and is urged by a second tension spring 25 to rotate counterclockwise. An elongated hole 24a is provided in the middle part of the reclining lever 24.
A circular arc portion 24b centered on the pivot shaft 22 and a curved portion 24c curved in a direction away from the pivot shaft 22 from the circular arc portion are formed in the elongated hole. Further, a pin 27a implanted in a reclining arm 27 pivotally connected to the seat track 7a by a pivot 26 is fitted into the elongated hole 24a. Tooth portion 2 meshing with portion 20a
7b is formed. Reclining lever 2
A gripping portion 24d is fixed to the tip of 4 with a screw 28.

The reclining pedal 29 is formed integrally with the reclining lever 24 and extends in a direction opposite to the reclining lever with respect to the pivot shaft 22.

A sector-shaped toothed portion 21a is formed at the lower end of the right seatback arm 21, and a toothed portion 31a formed on a reclining arm 31 pivotally connected to the right seat track 7b by a pivot 30 is formed in the toothed portion.
are starting to mesh together. In addition, the pin 31b implanted at the tip of the reclining arm 31 is
It fits into an elongated hole 32a formed in a rotary arm 32 fixed to the pivot shaft 22. The elongated hole consists of a circular arc portion 32b centered on the pivot shaft 22 and a curved portion 32c curved in a direction away from the circular arc portion from the pivot shaft 22. Further, the rotary arm 32 is urged by a second tension spring 33 to rotate counterclockwise.

The locking member 17 is pivotally connected to the left seat track 7a by a pin 36, and the third tension spring 3
7, it is biased counterclockwise. A convex portion 17a that can be engaged with a concave portion 20b of the seat back arm 20 is formed at one end of the locking member 17.

The link member 18 has one end connected to the seat track 7a.
The cable 39A is rotatably attached to the inner side (center side in the width direction of the seat) by a pivot 38, and the other end is connected to the cable 39A.
The locking member 17 is connected to the wire 40A inserted into the locking member 17.
is connected to the other end. A roller 41 is pivotally attached to the intermediate portion of the link member 18, and the roller engages with and follows a cam portion 43a of a cam member 43 fixed to the inside of the fixed member 13 (on the center side in the width direction of the sheet). It's becoming like that.

The link member 18 and the cam member 43 constituting the seat backlock device 8 are attached only to the left fixing member 13 and the left seat track 7a.

The seat track device 9 consists of a left seat track device 50 and a right seat track device 51.
is a rotating shaft 5 pivotally connected to the left seat track 7a.
2, a lock plate 54 that is integrally fixed to the rotating shaft 52, and a fixing member 13.
The protrusion 55a formed on the locking pawl 55 fits into the hole 54a formed on the locking plate 54, and the left seat track 7
A is designed to lock. The lock arm 53 also has a torsion spring 56 wound around the rotating shaft 52.
is biased to rotate clockwise in FIG. 8. The right seat track locking device 51 includes a lock arm 59 fixed to a rotation shaft 58 pivotally connected to the right seat track 7b, a lock plate 60 fixed to the rotation shaft 58 integrally, and a lock plate 60 fixed to the fixed member 14. A convex portion 61a formed on the lock pawl 61 fits into a hole 60a formed on the lock plate 60 to lock the right seat track 7b. Further, a wire attachment portion 59 protruding from one end of the lock arm 59 is connected to the right seat back arm 21 by a wire 40B.
The tip of the lock arm 53 is connected to the tip of the lock arm 53 by a wire 40C.

The seat back 12 is configured to be locked in a forward tilted state at positions other than the rear most position.

The present invention is configured as described above, and its operation will be explained below. 1 to 13 show the state of the wake-in device 6 when the slide seat 3 is in the rear most position R, and the seat back 12 is in an upright state.

From this state, in order to move the sliding seat 3 forward (in the direction of arrow A) so that the occupant can sit on the rear seat 4, first push the reclining lever 24 by hand against the spring force of the second tension spring 25. Rotate the reclining lever 24 clockwise about the pivot 22 by lifting it up or by pressing down on the reclining pedal 29 with your foot. Then, the reclining arm 27 is inserted into the elongated hole 24a via the pin 27a.
It rotates counterclockwise around the pivot 26 by the curved portion 24c of the reclining arm 27 and the toothed portion 20 of the seatback arm 20.
The seat back arm is disengaged from a.
The seat back 12 is rotated counterclockwise around the pivot shaft 22 by the spring force of the spiral spring 23.
is tilted forward, and the recess 20b of the seat back arm moves to a position facing the protrusion 17a of the locking member 17.

At the same time, as the right seat back arm 21 is rotated forward, the wire 40B is wound up in the direction of arrow C as shown in FIG.
9 rotates counterclockwise about the rotating shaft 58 via the wire attachment portion 59a, and the engagement between the lock plate 60 and the lock pawl 61 is released. Further, as the right lock arm 59 rotates counterclockwise, the left lock arm 53 is pulled in the direction of arrow D (FIG. 19) by the wire 40C, and is rotated clockwise around the rotation shaft 52. The lock plate 54 and the lock pawl 55 are disengaged from each other.

When the left and right seat tracks 7a and 7b are unlocked in this way, the slide seat 3
is moved in the direction of arrow B by the first tension spring 15. In this case, the roller 41 of the link member 18
The link member 18 falls along the cam portion 43a of the cam member 43 to the position shown by the imaginary line, and the link member 18
8 in the clockwise direction by a distance S, and the wire 40A is loosened by that amount. Then, the locking member 17 rotates counterclockwise due to the restoring force of the third tension spring 37, and the convex portion 17a of the locking member engages with the recess 20b of the seat back arm 20. As a result, the sliding seat 3 is the front most position F with the seat back 12 tilted forward and locked.
The first tension spring 15 has a length l (approximately 300 mm) up to
It moves and stops due to the spring force.

In this way, the sliding seat 3 is locked with the seat back 12 tilted forward at positions other than the rear most position R, so that the occupant will not be seated in the wrong position. As a result, the occupant will no longer hit his or her knee against the instrument panel 65, improving safety.

In order to return the sliding seat 3, whose seat back 12 is locked in the front most position F, to the rear most position R, the seat back 12 of the sliding seat 3 must be moved against the spring force of the first tension spring 15. and press backward. Then, just before the rear most position R, the roller 41 of the link member 18 starts to smoothly ride on the cam portion 43a of the cam member 43 while rolling.
At the rear most position R, the link member 18 is pivoted to the pivot 38.
The wire 40A is rotated counterclockwise by a distance S around the center, and the wire 40A is pulled by that amount, and the locking member 17
rotates clockwise about the pin 36, and the engagement between the convex portion 17a of the locking member and the concave portion 20b of the seat back arm 20 is released. In this case, since the link member 18 contacts the cam portion 43a of the cam member 43 via the roller 41, the operation is very smooth.

In this state, the reclining lever 24 is rotated clockwise against the spring force of the second tension spring 25, and the seat back 12 is rotated clockwise about the pivot shaft 22 against the spring force of the spiral spring 23. When the reclining lever 24 is released when the seat bag reaches the normal upright position, the reclining lever rotates counterclockwise by the restoring force of the second tension spring 25, and at the same time the reclining arms 27, 31 rotates clockwise, and the teeth 27b, 31 of the reclining arm
a and the teeth 20 of the seatback arms 20 and 21
a and 21a are engaged with each other, and the seat bag 12 is set in the normal upright position.

At this time, the wire 40B pulling the right lock arm 59 loosens, and the lock arm 59 moves to the rotating shaft 58.
The lock plate 60 and the lock pawl 61 engage with each other, and at the same time, the left lock arm 53 rotates counterclockwise about the rotating shaft 52, and the lock plate 54 and the lock pawl 55 engage with each other. is engaged.
As a result, the seat track 7 is fixed to the fixing member 13,
14.

The present invention is constructed and operates as described above, so that when sliding the sliding seat forward to get in and out of the rear seat in a two-door car, the seat back is locked in a forward-folding state in any position other than the rear most position. This prevents passengers from pretending to be able to sit on the sliding seat when the knee space in relation to the instrument panel is extremely narrow, and has the effect of preventing misunderstandings from passengers and eliminating the risk of complaints. There is. In addition, the nice base relative to the instrument panel is extremely narrow so that the occupant cannot sit in the front, so the occupant's knee does not hit the instrument panel in such a tight condition that the vehicle is safe. It has the effect of improving sex. In addition, the cam member used for locking or unlocking the seat back and the link member are brought into contact via a roller pivotally connected to the link member, and the roller is engaged with the cam member and driven. This has the effect that the locking or releasing operation of the seat bag can be performed extremely smoothly. Furthermore, since the link member and cam member of the seat backlock device are provided inside the fixing member and the seat track, these members do not protrude to the outside, which improves safety and improves the appearance of the seat. There are effects that can be improved.

[Brief explanation of drawings]

The drawings relate to embodiments of the present invention, and FIG. 1 is a schematic side view of a two-door vehicle equipped with a seat walk-in device, FIG. 2 is a schematic perspective view of the seat walk-in device, and FIG. 3 is a schematic side view of a two-door vehicle equipped with a seat walk-in device. A left side view of the walk-in device, FIG. 4 is a vertical sectional view taken in the direction of the − arrow in FIG. 3, FIG. 5 is a partially enlarged perspective view of the device shown in FIG. 3, and FIG. Fig. 7 is a partial plan view taken in the direction of the arrows in Fig. 6, Fig. 8 is a longitudinal sectional view taken in the direction indicated by the arrows in Fig. 7, and Fig. 9 is a longitudinal sectional view taken in the direction indicated by the arrows in Fig. 8. Figure, 1st
Figure 0 is a side view showing the mechanism on the right side of the seat walk-in device, Figure 11 is a partial plan view taken along arrows XI in Figure 10, Figure 12 is a longitudinal sectional view taken along arrows XII--XII in Figure 11, Fig. 13 is a vertical sectional view taken in the direction of the - arrow in Fig. 12, Fig. 14 is a side view of the seat walk-in device just before the seat bag is locked forward, Fig. 15 is a plan view taken in the direction shown in the arrow of Fig. 14, and Fig. 16. 15 is a vertical cross-sectional view taken in the direction of arrows in FIG. 15, FIG. 17 is a vertical cross-sectional view taken in the direction of arrows in FIG. 16, FIG. 18 is a side view of the seat walk-in device when the seat bag is locked forward, and FIG. 20 is a longitudinal sectional view of the left and right seat track locking devices in an unlocked state, FIG.
It is a cross-sectional view taken along arrows XI-XI. 3 is a slide seat, 6 is a seat walk-in device, 7 is a seat track, 8 is a seat backlock device, 9 is a seat track lock device, 1
1 is seat cushion, 12 is seat back, 1
3 and 14 are fixing members, 16 is a seat back arm, 17 is a locking member, 17a is a convex portion, 18 is a link member, 20 is a left seat back arm, 20a
20b is a toothed portion, 20b is a recessed portion, 21 is a right seat back arm, 41 is a roller, 43 is a cam member, 53, 5
9 is the lock arm, 54, 60 is the lock plate, 55, 6
1 is the lock pawl, and R is the rear most position.

Claims (1)

[Claims] 1. A sliding seat consisting of a seat cushion and a reclinable seat bag, a seat track fixed to the seat cushion of the sliding seat and slidably inserted into a fixing member, and a recess fixed to the seat bag. a seat back arm that is formed with a recess and is swingable relative to the seat track; and a locking member that has a releasable convex portion formed in the recessed portion of the seat back arm and is pivotally connected to the seat track. Then, a cam member connected to the locking member with a wire and fixed to the inside of the fixed member is driven by the back and forth movement of the slide sheet to swing the locking member, and the protrusion of the locking member is caused to swing. A roller that engages and follows the cam portion of the cam member in order to engage and disengage the portion from the recessed portion of the seat back arm is pivotally connected to the intermediate portion and rotatably attached to the inside of the seat track. a seat backlock device provided with a link member;
A locking pawl fixed to the fixing member and a locking plate pivotally connected to the seat track, connected to the seatback arm by a wire, and removably connected to the locking pawl in conjunction with the seatback arm are integrally fixed. 1. A walk-in device for a seat, comprising: a seat track locking device having a locking arm, the seatback being configured to be locked in a forward tilted state when the seatback is in a position other than the rear most position.