JPS6312006Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a simple forward-folding device for folding a seat bag forward in two stages.

Car seats with seatbacks that can be folded forward are widely used, but there are cases where you do not want to fold the seatback completely forward and want to stop it at an intermediate position, or there are cases where it is sufficient to fold the seatback forward to the intermediate position. In order to stop it in position, the structure of the forward-folding device tends to be complicated.

The present invention has focused on this point and has been devised for the purpose of providing a forward folding device suitable for folding the seat back forward in two stages: an intermediate position and a fully folded forward position. A first operating lever and a first engaging protrusion that engage with each other to prevent the seat back from falling forward when in the normal upright position are provided on the frame and the seat back, respectively, and are further engaged with the first operating lever. A second operating lever and a second engaging protrusion that engage with each other when the seat bag is folded forward to an intermediate position by releasing the engagement with the protrusion and prevent the seat bag from being folded forward any further are mounted on the same frame. and seat back. In other words, the present invention is the first
If you operate the second operating lever to release the engagement and move the seatback forward, the seatback will stop at the intermediate position, and if you further operate the second operating lever to release the engagement, the seatback will move further forward. The forward folding position of the seat back can be controlled by a simple structure consisting of a combination of a lever and an engaging protrusion.

Next, an embodiment of the present invention will be described based on the drawings. FIG. 1 is a side view, FIG. 2 is an exploded perspective view, and FIG. 3 is an explanatory diagram of the operation.

In the figure, 1 is the underframe, 2 is the seat bottom, and 3
1 is a seat bag, and 4 is a frame. The seat bag 3 is supported by the frame 4 by a hinge 5 so as to be foldable forward. 6 is a first operating lever, 7 is a handle, and 8 is a first engaging protrusion, which is the operating lever 6.
is on the inner surface of the frame 4, and the handle 7 is on the inner surface of the frame 4.
are respectively disposed on the outer surface of the seat back 3 and fixed to each other, and are rotatably attached to the frame 4 through the attachment hole 9, and the engagement protrusion 8 is provided protruding from the side surface of the seat bag 3 in correspondence with the operating lever 6. When the seat bag 3 is in the normal upright position (the state shown in FIG. 1), it is engaged with the recess 6a of the operating lever 6. 10 is a second operation lever, 11 is a second engagement protrusion, and the operation lever 10 has a pin 1 on the inner surface of the frame 4.
2, and the engaging protrusion 11 is provided to protrude from the side surface of the seat back 3 in correspondence with the operating lever 10. This engagement protrusion 11 is in sliding contact with the arc-shaped side edge 10a of the operating lever 10 when the seat bag 3 is in the upright position, and is formed continuously with the arc-shaped side edge 10a when the seat bag 3 is folded forward to the intermediate position. It is adapted to engage with the stepped portion 10b. Reference numeral 13 denotes a spring for biasing the operating levers 6, 10 with rotational force in the direction of the engagement protrusions 8, 11, and is stretched between the operating levers 6, 10. 6b and 10c are mounting holes that serve as rotation centers of the operating levers 6 and 10;
0d is an operating protrusion of the operating lever 10, and 5a and 5b are hinge holes of the frame 4 and seat back 3.

This device has the configuration described above and operates as follows. That is, in FIG. 3, A shows the seat back 3 when it is in the upright position, and the first engaging protrusion 8 is engaged with the recess 6a of the first operating lever 6. When the handle 7 is operated to rotate the control lever 6 counterclockwise about the mounting hole 6b, the engagement between the engagement protrusion 8 and the recess 6a is released, and the seat back 3 can be folded forward. . When the seat bag 3 is folded forward from this state, the seat bag 3 is folded forward around the hinge 5 and stops at a position where the second engagement protrusion 11 engages with the stepped portion 10b of the second operating lever 10. B shows the seat back 3 in this intermediate position. In this state, when the operating protrusion 10d is pushed down and the second operating lever 10 is rotated clockwise, the engagement between the engaging protrusion 11 and the stepped portion 10b is released, and the seat bag 3 can be folded further forward. , it can be folded forward to a completely reclined position. C shows the seat back 3 in a completely folded forward state. In addition,
The operating levers 6 and 10 are appropriately provided with stoppers (not shown) to prevent them from rotating more than necessary by the spring 13 when they are not engaged with the engaging protrusions 8 and 11. The shape of each operating lever 6, 10 is selected so that re-engagement with the engaging protrusion 8, 11 is performed smoothly when the lever is raised.

As is clear from the above explanation, the present invention is the first
By operating the second operating lever, the seat back can be folded forward to the intermediate position, and by further operating the second operating lever, the seat back can be folded forward beyond the intermediate position. The structure is extremely simple, consisting of a combination of a lever and an engaging protrusion, and has the advantage of reliable operation and easy operation.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts of a seat using an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is an explanatory diagram of the operation. 3... Seat bag, 4... Frame, 5...
Hinge, 6... First operating lever, 6a... Recessed portion, 8... First engaging protrusion, 10... Second operating lever, 10b... Step portion, 11... Second engaging protrusion .

Claims (1)

[Scope of utility model registration request] A first operating lever and a first engagement lever that support the seat back so that it can be folded forward by frames on both the left and right sides, and that engage with each other to prevent the seat back from falling forward when the seat back is in a normal upright position. Engaging protrusions are provided on the frame and the seat back, respectively, and when the engagement between the first operating lever and the engaging protrusion is released and the seat back is tilted forward to an intermediate position, they engage with each other and the seat back is moved forward. A seat bag forward folding device comprising a second operating lever and a second engagement protrusion for preventing the seat bag from being folded down, respectively provided on the frame and the seat bag.