JPH0127469Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a walk-in mechanism for an automobile seat. By operating a walk-in pedal, the invention simultaneously performs three operations: folding the seat back forward, moving the seat forward, and rotating the seat forward. This relates to a rotary walk-in mechanism designed to allow rear-seat passengers to get in and out of the vehicle more easily.

The walk-in mechanism of conventional car seats is
When you press the walk-in pedal or reclining adjuster release lever, the seat back falls forward and at the same time the seat cushion slides forward.
It had a mechanism that allowed it to travel straight. However, if the shift lever of a car with a floor shift specification is unavoidably installed on the left side or rear due to reasons such as dimensionality, usability, or installation of the transmission and engine, or the center pillar of the door is installed in the front. is planned, or when the interior design has unevenness, the conventional slide straight walk-in mechanism can cause interference between the shift lever or interior related objects and the front edge of the seat cushion. It was not possible to provide enough space to enter and exit the rear seats.

In view of the above points, the present invention has a structure as described in the claims of the utility model registration, and the three operations of folding the seat back forward, moving the seat forward, and rotating the seat forward can be performed by operating the walk-in pedal. It is designed to do this at the same time, and is unique in that it can provide enough space for getting in and out of the rear seats with a small amount of front-to-back movement.

Hereinafter, the configuration and operation of the present invention will be explained based on the drawings.

The drawings show an embodiment of the rotary walk-in mechanism of the present invention, and FIG. 1 is a perspective view showing its outline.

In the figure, 1 is a seat cushion, 2 is a seat back, and seat tracks 5a and 5b are attached to the lower portions of both sides of the seat cushion 1 on beams 4 that connect both front and rear sectors 3, 3 fixed to the floor. ing.

A seat rotation mechanism 6 is provided on a seat track 5a located on the inside side of the seat cushion 1, corresponding to the rear part of the seat cushion 1. As shown in FIG. 2, on the track 5b, an arc-shaped lower rail 7 centered on the fixed shaft 6a of the seat rotation mechanism 6 and an arc-shaped upper rail 8 that rotates along the lower rail 7 are provided. Furthermore, a locking mechanism 9 is attached to this arcuate upper rail 8 to lock the seat from rotating forward.

As shown in FIGS. 2 to 4, the lock mechanism 9 has a concave shape at the inner rear end of an arcuate lower plate 0 interposed and fixed between the upper surface of the seat track 5b and the arcuate lower rail 7. A stopper 11a is provided protruding from the locking portion 11 and the front end.
The center portion of the hook 12 is pivotally supported on a hook-shaped support portion 13 fixed to the arc-shaped upper rail 8 so that the hook 12 with a circular head can be engaged and disengaged by raising and lowering motion, and a lock is attached to the rear end. It has a structure in which a spring 14 for locking and a cable wire 15 for unlocking are attached.

The unlocking cable wire 15 is incorporated into a seat track mechanism 16 (to be described later), and is incorporated into an unlocking cable wire 18 of a lock mechanism 17 that locks forward movement of the seat, and a reclining adjuster mechanism 19, which locks the seat back. The seat cushion 1 along with the cable wire 21 for unlocking the lock mechanism 20 that locks the seat cushion 2 from being folded forward.
It is guided to a walk-in pedal 22 that can be depressed simultaneously and is connected to each pedal separately.

As shown in FIGS. 2 and 5, the seat track 5a5b is composed of a lower rail 23 fixed to the beam portions 4 of the sectors 3, 3 and an upper rail 24 slidably fitted thereto. The lower end of the fixed shaft 6a of the seat rotation mechanism 6 is vertically fixed on the upper rail 24 of the seat track 5a by a base plate 25. That is, as shown in FIG. 6, the rotation mechanism 6 itself has a seat support member 27 fitted with a built-in roller bearing 26 for rotatably supporting one side of the seat on the shaft 6a, and a seat support member 27 fitted in the lower part thereof. A spiral spring 28 whose inner end is fixed to the shaft 6a is wound in a direction that applies a forward rotational force to the seat, and whose outer end is a locking part 29 that projects from the lower part of the support member 27. It is configured to be locked to.

As shown in FIG. 5, on the inside of the seat track 5a, a lock plate 31 of the seat track mechanism 16 is provided with a large number of lock grooves 30 arranged at approximately equal intervals along the side surface of the seat track 5a. 4, and the lock plate 3 is provided integrally with the lock plate 3.
A spring 32 is stretched between the front end of the seat cushion 1 and the rear end of the panel of the seat cushion 1 to bias the seat cushion 1 forward.

A housing 33 of the locking mechanism 17 is fixed to the side surface of the upper rail 24 of the seat track 5a at a portion facing each of the locking mechanisms 30 within the adjustment range of the seat.
3, the distal end of a rod 35 having a seat track handle 34 is rotatably attached.

Inside the housing 33, as shown in FIG.
The lock piece 36 that engages with the rod 35 is fixed, and the spring 37 that biases the lock piece 36 in the locking direction is fixed at one end to the rod 35 and the other end is locked to the inner wall of the casing. The lock release cable wire 18
is attached to the tip of the locking piece 36, and is configured to be unlockable by operating either the cable wire 18 or the seat track handle 34.

Further, the lock mechanism 20 that locks the seat back 2 from tilting forward is incorporated into the reclining adjuster mechanism 19 as shown in FIG. That is, the upper arm 3 supporting the seat back 2
8 is pivotally supported by a reclining lower plate 39 and urged forward by a spiral spring 40, and the reclining lever 43, and the locking state is maintained by a spring 44. The unlocking cable wire 21 is attached to the head.

The walk-in pedal 22 for collectively operating each of the lock mechanisms 17, 9, and 20 is shown in FIGS. 9 and 10.
As shown in the figure, the lock release cable wires 18, 1 are placed inside the U-shaped bracket 45.
L-shaped pedals 18a, 15 for operating 5, 21
a, 21a can be rotated independently by a horizontal shaft 46,
They are arranged side by side on the same tread surface, with corresponding cable wire ends attached to their upper ends, and pedal reciprocating springs 47 shaped as shown in FIG. 11 attached between both side walls of the bracket 45. ing. Reference numeral 48 denotes directionally adjustable rollers provided on the lower left and right sides of the front end of the seat cushion 1, which are used to stabilize the seat cushion 1 when normally seated.

In the rotary walk-in mechanism of the present invention configured as described above, when a rear seat occupant steps on the walk-in pedal 22 provided at the rear of the seat cushion 1 when getting on or off, the pedals are arranged side by side on the same tread surface. Each pedal 18a, 15a, 21a is simultaneously depressed and rotated, and the lock release cable wire 18,
Each lock mechanism 17, 9, 20 via 15, 21
to release the lock. That is, when the cable wire 15 is pulled, the hook 12 rises and separates from the locking part 11, so the locking mechanism 9 is unlocked, and the arc-shaped upper rail 8 is rotated by the rotational force of the seat rotation mechanism 6 to rotate the seat cushion. When the cable 18 is pulled, the lock piece 36 rotates and comes out of the lock groove 30, so the lock mechanism 17 is unlocked and the seat is moved by the spring 32.
When the cable 21 is pulled, the latch pole 42 is released from the latch 41, so the lock mechanism 20 is unlocked, and the upper arm 38 is folded forward with the seat back 2 by the force of the spiral spring 40. .

These operations are carried out simultaneously and quickly by the spring force, so the walk-in operation is completed immediately, and the seat cushion 1 moves forward by folding the seat back 2 forward, rotates inward into the passenger compartment, and then closes the stopper 1.
1a and is held in that position.

On the other hand, when the pedal force is removed from the walk-in pedal 22, the return spring 47 causes the pedal 18 to
a, 15a, and 21a return all at once, and this return operation returns each lock mechanism 17, 9, and 20 to a lockable state.

Each pedal 18 of the walk-in pedal 22
Since the operations of a, 15a, and 21a are independent and do not affect other mechanisms, the seat can be easily returned to its old position regardless of the order of operations. For example, if you want to return the seat cushion 1 from its original orientation, rotate the seat cushion 1 toward its old position against the force of the spiral spring 28. The circular hook 12 climbs over the locking part 11 and engages with it to be in a locked state. In this state, if the seat track handle 34 of the seat track mechanism 16 is operated, the pedal return spring on the walk-in pedal 22 side is released. Since the seat bag 1 is in an almost free state with only the reclining lever 47, the longitudinal position of the seat bag 1 can be easily adjusted, and the upright angle of the seat bag 2 can also be adjusted easily with the reclining lever 43.

As mentioned above, the present invention has a walk-in mechanism that allows the three operations of folding the seat back forward, moving the seat forward, and rotating the seat forward at the same time by operating the walk-in pedal. You can increase the space for entering and exiting the
In particular, when the shift lever of a car with a floor shift specification is unavoidably installed on the rear or left side due to dimensionality or usability, or when the shift lever is installed on the left or rear side due to transmission and engine installation. , and the center pillar is planned to be installed in the front, or if the interior design has an uneven design, the conventional walk-in mechanism that only folds the seat back forward and moves the seat straight forward will not work with the shift lever. Due to the interference between the front edge of the seat cushion or the interior parts and the front edge of the seat cushion, it was not possible to secure enough space for entering and exiting the rear seats.However, according to the present invention, the seat back is moved forward and the seat cushion is moved forward. At the same time as you move forward, the seat cushion itself rotates forward using the rear part on the inside of the passenger compartment as a fulcrum, so with a small amount of longitudinal movement, you can create enough space for entering and exiting the rear seats. This has the effect of significantly improving the ease of getting on and off the vehicle.

[Brief explanation of drawings]

The drawings show an embodiment of the rotary walk-in mechanism of the present invention, and FIG. 1 is a perspective view showing its outline;
Fig. 2 is a perspective view showing the lower rail and upper rail on the seat track and their locking mechanisms, Fig. 3 is an enlarged sectional view taken along the - line in Fig. 2, Fig. 4 is a side view of a part of the same as above, Fig. 5 6 is a perspective view of the rotation mechanism, FIG. 7 is an enlarged view of the locking mechanism of the seat track mechanism, and FIG. 8 is a side view of the reclining adjuster mechanism. , FIG. 9 is a rear view of the walk-in pedal section, FIG. 10 is a longitudinal sectional side view of the same, and FIG. 11 is a plan view of the return spring. 1: Seat cushion, 2: Seat back, 5
a, 5b: seat track, 6: seat rotation mechanism, 6a: fixed shaft, 7: arcuate lower rail,
8: Arc-shaped upper rail, 9, 17, 20: Lock mechanism 15, 18, 21: Cable wire, 2
2: Walk-in pedal.

Claims (1)

[Scope of utility model registration request] In the walk-in mechanism, there is a seat rotation mechanism provided at a portion corresponding to the rear of the seat cushion on a seat track located on the inside of the passenger compartment of the seat cushion, and a seat rotation mechanism provided on a seat track on the opposite side of the seat track. an arc-shaped lower rail centered on a fixed axis of the seat rotation mechanism; an arc-shaped upper rail on the seat side that rotates along the lower rail; and an arc-shaped upper rail that rotates in the forward direction. A lock mechanism that locks the seat, a lock mechanism that is incorporated into the seat track mechanism and that locks the seat from moving forward, and a lock mechanism that is built into the reclining adjuster mechanism that locks the seat back from tilting forward. is provided at the bottom of the rear of the seat, and when stepped on by a passenger when getting on or off the seat, it releases the locks of each of the above locking mechanisms via cable wires, folds the seat back forward, rotates the seat forward, and moves forward. A rotating walk-in mechanism consisting of a walk-in pedal.