JPS6347144Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a backrest convertible chair for vehicles in which the direction of the seat can be changed by converting the backrest to the front or back of the seat cushion, and in particular, the present invention relates to a seat with a seat that can be installed under the seat cushion. The present invention relates to a device for moving a device to a predetermined use position in response to a change in back position using a simple structure.

The footrests that have been proposed for convertible backrest chairs for vehicles have been installed separately on the front and back sides of the chair, and the mechanism is such that one end of the support arm of the footrest is connected to the leg base. Many have a structure in which they are rotatably mounted, and the footrest, such as a footrest, is moved up and down to fix it in the position of use. In such a foothold,
Since the footrest rotates around the pivot of the support arm as a fulcrum, a rotation space is required at the bottom of the seat cushion, and the footrest can only be installed in a limited number of places on the chair, and mechanically it cannot be installed on the front side of the chair. Another disadvantage was that twice as many parts were required on the rear side.

This invention solves the above problems,
The position in which the footrest is used is fixed by freely sliding two sliding plates, which function separately on the front and rear sides of the seat and serve as supporting arms of the footrest, toward the front or rear of the footrest. Not only can it be fixed to the rear side of the seat, even if a foot or an object is accidentally caught between one of the sliding plates that is pulled in to the front side of the leg base on the front side of the seat and the leg base. To provide a footrest for a convertible backrest type chair for a vehicle, which has a simple structure and incorporates a safety mechanism that allows the sliding plate to be pulled out safely regardless of the function of the other sliding plate.

Embodiments of the present invention will be described below with reference to the drawings.

In the drawing, 1 is the back seat, 2 is the seat cushion, and 3
is a leg stand, and has a pair of backrest conversion links 4 and 5.
The upper end is attached to the lower part of the backrest 1, and the lower end is attached to the upper part of the footrest 3 so as to be rotatable using shafts 6 and 7, which serve as fulcrums, respectively, to form a link mechanism, and the backrest 1 is attached to the front of the seat cushion 2 or It is configured so that the direction of the seat can be changed by converting it later, and slide holes 8 are provided at both ends of the leg base 3 to extend horizontally through the front and back of the leg base 3,
Inside this hole 8, two slide plates 11 and 12 having elongated holes 9 and 10 at their base ends, and with the elongated holes 9 and 10 overlapped on the inside of the leg stand 3, are inserted into the leg stand 3. Insert horizontally in the front or rear direction,
The tip portions of each are made to protrude outward from the leg stand 3, and footrest rods 13 and 14 are further extended over these protruding ends to be fixed. The length from the base end to the protruding end of the slide plates 11, 12 is such that even when one footrest rod 13 or 14 is fixed in the use position and the other footrest rod 14 or 13 moves, Move to long holes 9, 10
It suffices if the amount can be absorbed by the long diameter of the seat, and is determined in advance according to the seat spacing and other design conditions. 15 is a crank. The crank 15 supports one of the back shift links 4 and 5, that is, the lower part of the back shift link 4 in the illustrated embodiment, and connects the back shift link 4 to a shaft 6 serving as its fulcrum. They are attached so that they can swing together. The lower end of this crank 15 is rotatably connected via a connecting link 16 to the upper end of an operating link 18 that is rotatably attached to the footrest 3 using a rotating shaft 17, and the lower end of this operating link 18 is The fixed pin 19 is slidably inserted into the long holes 9 and 10 of the slide plates 11 and 12, and then the spring 2
0 and 21 are used to connect the lower end side of the operating link 18 and the slide plates 11 and 12, respectively, and pull it toward the inside of the leg base 3.

Next, the operation of the footrest of the convertible seat for a vehicle according to the present invention will be explained.

In the drawing, when the backrest 1 is changed from the left side of the seat cushion 2 to the right side, the crank 15 attached to the shaft 6 supporting one side 4 of the backrest conversion links 4 and 5 rotates the upper end of the operating link 18 to the left side. ,
Conversely, the lower end is rotated from the left side to the right side, and the pin 19 of the operating link 18 pushes the slide plate 12 and slides it to the right side, which is the direction of change of the backrest 1.
The footrest bar 14 is projected to the use position. Therefore, the footrest part on the front side of the seat, that is, the left footrest bar 13, is
It is stored in the front of the leg stand 3. If a foot or an object is accidentally caught between the left footrest 13 and the footrest 3 when changing the backrest 1, the slide plate 11 absorbs the movement of the pin 19 through its elongated hole 9. , the slide plate 11 stops sliding and does not completely trap your feet or objects. Therefore, excluding feet and objects,
The slide plate 11 and the footrest rod 13 are pulled by the spring 20 and stored in their original positions. When converting the backrest 1 from the right side to the left side, the footrest operates in exactly the opposite manner as described above.

Since the present invention is configured as described above, the footrest can be fixed in the use position by sliding in the switching direction in response to the switching operation of the backrest with a simple structure. Even if a foot or an object gets caught between the chair and the footrest, it can be safely removed, and since it does not block the space under the seat cushion, the floor surface under the chair can be used effectively. This has great practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the footrest for a convertible seat for a vehicle according to the present invention. Figure 1 is a front view of the chair, Figure 2 is a side view of the same, and Figure 3 is an enlarged view of the main parts. 4 is a plan view, FIG. 5 is a front view, and FIG. 6 is a perspective view showing the operation of the slide plate. 1...backrest, 2...sitting cushion, 3...leg stool,
4, 5... Link for backsliding conversion, 6, 7... Axis serving as a fulcrum, 9, 10... Long hole, 11, 12... Slide plate, 13, 14... Foothold bar, 15... Crank , 18... Actuation link, 19... Pin, 2
0,21...Spring.

Claims (1)

[Scope of utility model registration request] A link mechanism is constructed by attaching the upper end of a pair of backrest conversion links to the lower part of the backrest and the lower end to the upper part of the footrest with a shaft so that they can rotate freely, and converting the backrest to the front or rear of the seat cushion. In a vehicle chair in which the direction of the seat can be changed, a crank is attached to the lower fulcrum shaft of one of the links for changing the backrest, and a crank that swings together with the link for changing the backrest is attached, and a crank is attached to the base end of each legrest. Two slide plates each having a long hole and capable of freely sliding in the front or rear direction of the leg base are arranged with the long holes of the base end overlapping each other, and these slide plates are placed between the crank and the slide plate to allow the legs to slide freely in the front or rear direction of the leg base. The upper end of the operating link rotatably attached to the base is rotatably connected to the lower end of the crank via a connecting link, and a pin fixed to the lower end of the operating link is connected to the overlapping of the two slide plates. A leg of a convertible backrest chair for a vehicle, characterized in that the leg is slidably inserted into a slotted hole, and the lower end side of the operating link is linked using a spring that tensions each slide plate separately. Hanging.