JPH0134169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a walk-in device for a vehicle seat, and more particularly, 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 moved forward by a certain range from the rear most position to an intermediate position in which the seat can be erected so that the seat can be seated. To provide a walk-in device for a seat, which can be moved stepwise in a seat position, and cannot be moved beyond an intermediate position to a front most position unless the occupant is tilted forward to prevent him or her from erroneously seating 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, passengers may mistakenly think that they 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 seat back locking device, but in this conventional example, when the seat is advanced from the rear most position, the check lever (26) is locked by the pin (33).
When the check lever comes into contact with the pin (code 27)
However, since the teeth of the lock lever (23) are in contact with the outer periphery of the seat back arm (7), the seat does not rotate and the seat does not tip forward. However, since the main purpose of this conventional example is to prevent the slide sheet from moving, there is a problem that if the force for advancing the sheet is strong, the pin (33), rod (28), etc. may be deformed. It was hot.

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, the sliding seat cannot be moved unless the seat back is locked in the forward tilted position after the intermediate position, which is a certain range of movement forward from the rear most position, to the front most position. To prevent misunderstandings among passengers and prevent complaints by preventing passengers from pretending that they can sit on a sliding seat when the knee space with respect to an instrument panel is extremely narrow. 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. Still another object is to make it possible to move and lock the sliding seat with the seatback in an upright position so that the occupant can sit from the rearmost position of the sliding seat to an intermediate position that has been moved a certain distance forward. To enable a user to sit on a sliding seat at a desired position and at a position that provides sufficient knee space. Another object of the present invention is to provide a seat track stopper device comprising a stopper fixed to a fixed member and a stopper link rotatably pivoted to the seat track, one end of which is engaged with and disengaged from the stopper.
The purpose is to provide sufficient strength so that each member will not be deformed even if the slide sheet is pushed forward from an intermediate position with a strong force.

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 connected to the locking member by a wire and a cam member fixed to the fixing member, the locking member is rocked by being driven by the back and forth movement of the slide seat; a seatback lock device comprising a link member whose convex portion is engaged with and disengaged from the concave portion of the seatback arm; and a seat backlock device provided with a link member that engages and disengages a convex portion of the seatback arm from the concave portion of the seatback arm; a lock pawl consisting of a plurality of comb-like teeth formed across; a lock arm having a lock plate fixed to a rotary shaft rotatably supported on the seat track and detachable from the lock pawl; and a seat track stopper device comprising a stopper fixed to the fixing member and a stopper link rotatably pivoted to the seat track and one end of which is engaged with and disengaged from the stopper. The seat back is movable in an upright position so that the sliding seat can be seated from the rear most position to the intermediate position, and the seat back is tilted forward between the intermediate position and the front most position, The present invention is characterized in that the seat bag cannot be moved unless one end of the stopper link is moved to a free position where it does not engage with the stopper and the seat bag is locked in the forward tilted state.

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, a seat track lock device 9, and a seat track stop device 10, 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 with respect 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, fan-shaped toothed portions 20a and recessed portions 20b are formed as extensions of the toothed portions. Also left seat back arm 20
As shown in FIG. 3, a spiral spring 23 is wound around a pivot shaft 22 pivotally connected to the seat track 7a.
is biased to rotate counterclockwise (forward tilting direction). A reclining lever 24 is fixed to the pivot shaft 22, and the reclining lever 24 is urged by a second tension spring 25 to rotate counterclockwise. An elongated hole 24a is formed in the middle of the reclining lever 24, and the elongated hole has 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. is formed.
Further, a reclining arm 2 pivotally connected to the seat track 7a by a pivot 26 is provided in the elongated hole 24a.
A pin 27a implanted in the reclining arm 27 is fitted into the reclining arm 27, and a toothed portion 27b that meshes with the toothed portion 20a of the left seat back arm 20 is formed on the reclining arm 27. A grip portion 24d is fixed to the tip of the reclining lever 24 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 is composed of a circular arc portion 32b centered on the pivot shaft 22 and a curved portion 32c curved from the circular arc portion in a direction away from the pivot shaft 22. Further, the rotating arm 32 is urged by a third tension spring 33 to rotate counterclockwise.

The locking member 17 is pivotally connected to the other end of a connecting link 35 whose one end is pivotally connected to the pivot shaft 26 by a pin 36, and is biased counterclockwise by a fourth tension spring 37. There is. At one end of the locking member 17,
A convex portion 17a that can engage with the concave portion 20b of the seat back arm 20 is formed.

The link member 18 has one end connected to the seat track 7a.
by a pivot 38, and the other end is connected to the cable 3 by a pivot 38.
It is connected to the other end of the locking member 17 by a wire 40A inserted into the locking member 9A. 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 fixed member 13.

The seat track locking device 9 consists of left and right seat track locking devices 45, 46, and the left seat track locking device 45 has a rotating shaft 47 rotatably supported on the left seat track 7a.
The lock arm 48 is fixed to the lock arm 48, the lock plate 49 is integrally fixed to the lock arm, and the lock pawl 50 is fixed to the fixing member 13. The lock pawl has a plurality of teeth 50 formed in a comb-teeth shape.
a, 50b, . As shown in FIG. 15, the lock arm 48 is biased to rotate clockwise by a torsion spring 51 wound around the rotating shaft 47.

The right seat track locking device 46 includes a lock arm 56 fixed to a rotating shaft 55 rotatably supported on the right seat track 7b, a lock plate 57 fixed integrally to the lock arm, and a fixing member. 1
4 and a lock pawl 58 fixed to the pin 4.
A convex portion 58a is formed on the lock pawl at a position opposite to the frontmost tooth portion 50n of the lock pawl 50 of the left fixing member 13, and the convex portion is formed on the lock plate 5.
The right seat track 7b is fitted into a hole 57a formed in the right seat track 7b. Also, a wire attachment portion 5 protruding from one end of the lock arm 56
6a is a wire 40 inserted into the cable 39B
The lock arm 56 is connected to the right seat back arm 21 by a wire 40c, and the tip of the lock arm 56 is connected to the tip of a lock arm 48 by a wire 40c. Furthermore, a grip portion 55a is formed at the tip of the rotating shaft 55.

The seat track stopper device 10 includes a stopper 60 and a stopper link 61, and the stopper 60 is fixed to the fixing member 13. The stopper link 61 is pivotally connected to the seat track 7a by a pivot 62, and is biased by a torsion spring 63 wound around the pivot to rotate counterclockwise in FIG. 6
0, and one end 61a thereof
is configured to be freely engageable and detachable from the stopper. Further, one end 61a of the stopper link 61 is connected to the right seat back arm 21 by a wire 40B.

The slide seat 3 is movable with the seat back 12 in an upright position so that the seat can be seated up to an intermediate position M in which the slide seat 3 is moved forward by a certain range, for example, 90 mm from the rear most position R, and beyond the intermediate position M to the front most position. Until F (for example
210mm), the seat back 12 is in the forward position,
One end 61a of the stopper link 61 is the stopper 60
The seat bag 12 is configured so that it cannot be moved unless it is moved to a free position where it is not engaged with the seat bag 12 and locked in the forward tilted state.

The present invention is configured as described above, and its operation will be explained below. First, as shown in FIG. 1, a case will be described in which the slide seat 3 is moved stepwise from the rear most position R to the intermediate position M by a distance l ₁ , for example, 90 mm. The passenger uses sliding seat 3
While seated on the seat cushion 11 of the
When the lock plate 57 is rotated counterclockwise in FIG. 8, the engagement between the hole 57a of the lock plate 57 and the convex portion 58a of the lock pawl 58 is released, and at the same time the lock arm 48 is rotated clockwise by the wire 40c, and the lock is locked. The engagement between the hole 49a of the plate 49 and the tooth portion 50a of the lock pawl 50 is released. In this state, the passenger
If you release the grip part 55a at a desired position between the intermediate positions M just before the part 1 contacts the stopper 60,
The lock arm 48 is rotated counterclockwise by the restoring force of the torsion spring 51, and the toothed portion 50a of the lock pawl 50 is rotated.
The other teeth fit into the holes 49a of the lock plate 49,
The seat track 7a is locked to the fixing member 13.

In this way, the seat track 7a rotates around the rotating shaft 55.
By operating the grip portion 55a, it is possible to lock the seat bag 12 to the fixing member 13 in stages, thereby keeping the seat bag 12 in its normal upright position.
The slide seat 3 can be moved from the rear most position R to the intermediate position M and locked at an appropriate position.

Next, in order to move the sliding seat 3 forward from the intermediate position M (in the direction of arrow A) so that the passenger can sit on the rear seat 4, first move the reclining lever by hand against the spring force of the second tension spring 25. 24 or press down on the reclining pedal 29 with your foot to rotate the reclining lever 24 clockwise about the pivot 22. Then, as shown in FIG. 11, the reclining arm 27 is rotated counterclockwise about the pivot 26 by the curved portion 24c of the elongated hole 24a via the pin 27a.
The engagement between the toothed portion 27b of the reclining arm 27 and the toothed portion 20a of the seatback arm 20 is released, and the seatback arm is rotated by the spiral spring 23.
The seat back 12 is rotated counterclockwise around the pivot shaft 22 by the spring force, and the seat back 12 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, the right seat back arm 21 is tilted forward and the wire 40B is wound up in the direction of arrow C as shown in FIG.
rotates counterclockwise in FIG. 18 about the rotating shaft 55 via the wire attachment part 56a,
The engagement between the lock plate 57 and the lock pawl 58 is released. Further, by counterclockwise rotation of the right lock arm 56, the left lock arm 48 is rotated to the wire 40c.
is pulled in the direction of arrow D (Fig. 18) by
The lock plate 49 is rotated clockwise around the rotating shaft 47, and the engagement between the lock plate 49 and the lock pawl 50 is released.

Further, as shown in FIG. 12, the stopper link 61 is pulled in the direction of arrow E by the wire 40B, rotates clockwise about the pivot 62 against the spring force of the torsion spring 63, and engages the stopper 60. Move to a free position that does not match.

In this way, the left and right seat tracks 7a, 7b are unlocked, and the stopper link 61 and the stopper 6
0, the slide sheet 3 is moved in the direction of arrow B by the first tension spring 15. In this case, when the stopper link 61 moves to the position shown by the imaginary line in FIG.
The link member 18 is rotated clockwise about the pivot 38 by a distance S, and the wire 40A is loosened by that amount. Then, the locking member 17 engages the fourth tension spring 3
7 rotates counterclockwise due to the restoring force of the engaging member, the convex portion 17a of the engaging member engages with the concave portion 20b of the seat back arm 20, and as a result, the sliding seat 3
With the seat back 12 tilted forward and locked, it moves from the intermediate position M to the front most position F by a distance l ₂ , for example, about 210 mm, by the spring force of the first tension spring 15 and stops.

In this way, in the slide seat 3, the seat back 12 is locked in the forward tilted state from beyond the intermediate position M to the front most position, so that the occupant will not be seated in the wrong position.
As a result, the occupant does not sit in such a tight condition that his knees hit the instrument panel 65, and safety is improved.

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 intermediate position M, the roller 41 of the link member 18 starts riding on the cam portion 43a of the cam member 43, and at the intermediate position M, the link member 18 rotates counterclockwise about the pivot 38 by a distance S. , the wire 40A is pulled by that amount, the locking member 17 rotates clockwise about the pin 36, and the engagement between the protrusion 17a of the locking member and the recess 20b of the seat back arm 20 is released.

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 56 loosens, and the lock arm 56 moves to the rotation axis 55.
The lock plate 57 and the lock pawl 58 engage with each other, and at the same time the left lock arm 48 rotates counterclockwise about the rotation shaft 47, causing the lock plate 49 and the lock pawl 50 to engage. The teeth 50n engage with each other. As a result, the seat track 7 is locked in the intermediate position M by the fixing members 13 and 14. Further, the wire 40B pulling the stopper link 61 is loosened, and the restoring force of the torsion spring 63 causes the stopper link 61 to rotate counterclockwise about the pivot 62 and return to the position where it engages with the stopper 60.

In this way, seat back 1 of slide sheet 3
2 to the normal upright position at the intermediate position M, and then to the rear most position R, operate the grip part 55a of the rotating shaft 55 to unlock the left and right seat tracks 7a and 7b, It is sufficient to move the seat back 12 to the rear most position R.

Since the present invention is constructed and operates as described above, when sliding the sliding seat forward to get in and out of the rear seat in a two-door vehicle such as a passenger car or truck, the sliding seat is moved forward from the rear most position. From the middle position to the front most position, the sliding seat cannot be moved unless the seat back is tilted forward, so the knee space for the instrument panel is extremely narrow. This has the effect of preventing passengers from appearing to be able to sit on the sliding seat, thereby preventing misunderstandings from passengers and eliminating the risk of complaints. In addition, the knee space relative to the instrument panel is extremely narrow so that passengers cannot sit in front of the instrument panel, so they do not have to ride in such a tight condition that their knees hit the instrument panel. This has the effect of improving safety. In addition, from the rear most position of the sliding seat to an intermediate position that has been moved a certain distance forward, the sliding seat moves and locks with the seatback in an upright position, allowing the occupant to sit in the position of their preference while still having sufficient knee space. Since the user can sit on the sliding seat at any position, the usability of the seat is improved and the seating comfort is improved. In addition, a seat track stopper device is provided, which consists of a stopper fixed to a fixed member and a stopper link rotatably pivoted to the seat track, and one end of which is engaged with and disengaged from the stopper, so that the sliding seat can be moved forward from the intermediate position. This has the effect of providing sufficient strength so that each member does not deform even when pressed with strong force.

[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 side view showing the mechanism on the left side of the walk-in device, Fig. 4 is the same as - in Fig. 3.
5 is a partially enlarged perspective view of the device shown in FIG. 3, FIG. 6 is a left side view with a part of the seat walk-in device cut away, and FIG. 7 is a view of the seat walk-in device. side view showing the mechanism on the right side of the device;
Fig. 8 is a partial plan view taken in the direction of the - arrow in Fig. 7, Fig. 9 is a longitudinal cross-sectional view taken in the - arrow direction of Fig. 8, and Fig. 10 is a partial plan view taken in the direction -
Fig. 11 is a side view of the seat walk-in device just before the seat back is locked forward, Fig. 12 is a plan view taken from the direction of the XII arrow in Fig. 11, and Fig. 13 is a plan view of 14 is a vertical sectional view in the direction of the arrows in FIG. 13, FIG. 15 is a vertical sectional view in the direction of the arrows in FIG. 17 is a side view of the seat walk-in device when the seat bag is locked forward, and FIG.
Figure 9 is a cross-sectional view taken in the - arrow direction of Figure 18;
0 is a cross-sectional view taken along the - arrow in FIG. 18. 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
0 is a seat track stopper device, 11 is a seat cushion, 12 is a seat back, 13 and 14 are respective 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 the left seat back arm, 20a is the tooth part, 2
0b is the recess, 21 is the right seat back arm, 47
is the rotating shaft, 48 is the lock arm, 49 is the lock plate, 5
0 is a lock pawl, 50a, 50b, .

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 fixed member is driven by the back and forth movement of the slide sheet to swing the locking member, and the convex portion of the locking member is rotated. a seat back lock device comprising: a link member adapted to be engaged with and disengaged from the recessed portion of the seat back arm; and a link member formed on the fixed member extending from a rear most position of the sliding seat to an intermediate position moved forward by a certain range. A seat provided with a lock pawl consisting of a plurality of comb-like teeth, and a lock arm having a lock plate fixed to a rotary shaft rotatably supported on the seat track and detachable from the lock pawl. a seat track stopper device comprising a stopper fixed to the fixing member and a stopper link rotatably pivoted to the seat track and one end of which is engaged with and disengaged from the stopper; The seat back is movable in an upright position so that the seat can be seated from the rear most position to the intermediate position, and between the intermediate position and the front most position, the seat back is folded forward and one end of the stopper link is moved. 2. A walk-in device for a seat, characterized in that the seat bag cannot be moved unless the seat bag is moved to a free position where it does not engage with the stopper and the seat bag is locked in a forward tilted state.