JPH0126509Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a walk-in device for automobile seats, and in particular, in a two-door type, the walk-in device is configured so that the front seat slides forward and the seat back is folded forward when a rear seat passenger gets on and off. It is related to the device.

Generally, a two-door type small car employs a walk-in device that slides the front seat forward in order to secure space for a passenger to get in and out of the rear seat.

However, since the conventional walk-in device is of the slide rail type, the slide rail installed below the seat is long, and the leg space for the rear seat occupant is narrow and cramped. Additionally, the smaller the car, the more limited the amount of sliding, which led to the narrower space for passengers in the rear seats to get in and out of the vehicle, and the smaller the legroom.

This invention was made in order to improve the above-mentioned conventional drawbacks, and the walk-in device for the front seat is configured with a link mechanism, and the purpose is to ensure sufficient boarding and alighting space and leg space. It provides: Therefore, the present invention has been developed for a walk-in device for front seats in automobiles, which includes two seat mounting plates parallel to each other in the longitudinal direction to which the seat frame is fixed, and two bases fixed to the vehicle body floor in correspondence with the seat mounting plates. a frame, a link mechanism consisting of a pair of left and right polygonal front legs and rear legs rotatably pivoted at the front and rear portions between the seat mounting plate and the underframe, and an upper end fixed to the lower surface of the seat mounting plate; a stopper guide having a recess formed at its lower end into which a pivot pin for pivotally connecting the rear leg to the underframe is inserted; It comprises a stopper that locks movement, and a connecting rod that connects the pair of front legs and rear legs, respectively,
The front leg has one side that comes into contact with the lower surface of the seat mounting plate and receives the load from the front of the seat when the seat is seated, and the rear leg has one side that comes into contact with the underframe and receives the load from the rear of the seat when the seat is seated. It is characterized by the formation of

Hereinafter, one embodiment of this invention will be described in detail with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a seat frame, which is fixed to a pair of left and right seat mounting plates 2, 2 with screws or the like. The pair of left and right seat mounting plates 2, 2 are rotatably connected to underframes 3, 3 fixed to the body at the front and rear portions via a pair of left and right front legs 4 and rear legs 5. The pair of left and right seat mounting plates 2, 2 have connecting pipes 6, 7 interposed between them to connect the left and right sides at front and rear pivot points 2a, 2b, respectively,
A pair of left and right front legs 4 and rear legs 5
They are pivotally connected together by bolts 8,8. The pair of front legs 4 and rear legs 5 have a substantially triangular shape. For example, one side 4a of the triangle of the front leg 4 comes into contact with the lower surface of the seat mounting plates 2, 2, and one side 5a of the triangle of the rear leg 5 comes into contact with the underframe 3, 3, and is formed so as to maintain the seat height h. The underframes 3, 3 are formed into a substantially U-shaped cross section, and have front and rear pivot points 3.
Front leg 4 and rear leg 5 at a and 3b
are pivotally connected via pins 9 and 10.

On the other hand, a stopper guide 11 is fixed to the lower surface of the seat attachments 2, 2, and a stop lever 12 is pivotally attached to the stopper guide 11 at a predetermined position by a bolt 13 or the like. The stopper portion 12a of the stop lever 12 is engaged with a pin 10 that pivotally supports the underframe 3 and the rear leg 5, and the lever portion 12b extends outward from the rear leg 5 for easy operation. Further, the locking mechanism by the stop lever 12 is operated by a spring 14.
Therefore, the stopper portion 12a is always engaged with the pin 10.

The locking/disengaging device for the stopper guide 12 is installed on the outside of the front seat, and is installed on the right side of the driver's seat and the left side of the passenger seat for easy operation.

The walk-in device according to this invention configured as described above first lifts the lever portion 12b from the locked, stationary state shown in FIG. 2, disengages the stopper portion 12a from the pin 10, and moves the seat back forward. By pushing out the seat frame 1 in the direction, the front legs 4 and rear legs 5 to which the seat frame 1 is pivoted move forward about the pivot points 3a, 3b of the underframes 3, 3. Therefore, there is a pivot point 2 on the rotating front leg 4 and rear leg 5.
The seat frame 1 pivoted by a and 2b also moves forward.

To return the seat to its original position, when the seat bag or the like is pulled rearward, the stopper portion 12a of the stop lever 12 automatically engages with the pin 10.

Note that in the above configuration, the stop lever 12
Since the locking mechanism was provided only on one side of the seat, in order to eliminate strength differences such as twisting and buckling between the left and right link mechanisms such as the front leg 4 and rear leg 5, the seat mounting plates 2 and 2 are connected with a connecting pipe. are doing.

As described above in detail, the walk-in device of this invention is constructed using a link mechanism with a simple structure, so the locking mechanism can be easily released with light operating force, and a sufficient space is provided for getting on and off. In addition, since there is no protruding part such as a slide rail, the practical effects are significant, such as a large leg space between the rear seats and the rear seats. Furthermore, since the pair of front legs and rear legs of the present invention are connected by a connecting pipe, there is no twisting or buckling between the left and right link mechanisms, ensuring mechanical strength, and both the front legs and rear legs are connected to each other by a connecting pipe. Since the load is received by one side of the polygon, it becomes more stable.

Furthermore, in the present invention, the stopper that restricts the forward movement of the seat is engaged with and locked by the pivot pin that pivots the rear leg to the underframe, and the pivot pin also serves as a lock pin. Therefore, there is no need to provide other locking hooks or protrusions, which simplifies the configuration, reduces the number of parts, and reduces costs.

Furthermore, the present invention does not involve any walk-in device other than the seat frame being attached to the seat mounting plate. As a result, no walk-in device mechanism is attached to the seat, so there is no problem in providing a seat reclining mechanism or the like.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts showing an embodiment of this invention, FIG. 2 is a top side view, and FIG. 3 is an exploded perspective view showing the right half of FIG. 2. 2...Seat mounting plate, 2a, 2b...Pivot point,
3...Underframe, 3a, 3b...Pivot point, 4...Front leg, 5...Rear leg, 9, 10...Pin, 12...Stop lever.

Claims (1)

[Scope of utility model registration request] A walk-in device for a front seat of an automobile includes two seat mounting plates parallel to each other in the longitudinal direction to which a seat frame is fixed, two underframes fixed to the vehicle body floor in correspondence with the seat mounting plates, and the above-mentioned seat. A link mechanism consisting of a pair of left and right polygonal front legs and rear legs rotatably mounted on the front and rear sides between the mounting plate and the underframe, and a link mechanism consisting of a pair of left and right polygonal front legs and rear legs, whose upper end is fixed to the lower surface of the seat mounting plate and whose lower end is the rear leg. a stopper guide having a recess into which a pivot pin for pivotally connecting the seat to the underframe is inserted, and a stopper that is pivotally supported by the stopper guide and engages with the pivot pin to lock forward movement of the seat. and a connecting pipe that connects the pair of front legs and rear legs, and the front leg has one side formed therein that contacts the lower surface of the seat mounting plate and receives the front load of the seat when the seat is seated;
The walk-in device is characterized in that the rear leg is formed with one side that comes into contact with the underframe and receives the rear load of the seat when the seat is seated.