JPS6320370Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of the hinge of a reclining seat.

Generally, when an auxiliary seat on the rear floor of a van type vehicle is stored when not in use, the backrest must tilt forward and overlap the seat, and when in use, the backrest must be kept in its normal upright position. Of course, it is also required that the backrest be tilted back to a bed-like horizontal position. However, conventional hinges for auxiliary seats have the drawback that the backrest cannot be tilted backwards enough and cannot be placed in a horizontal position rearward. Furthermore, a hinge for the auxiliary seat was desired to have a simple structure.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks and to meet the conventional demands.The backrest part can of course be placed in an upright position when in use, and if necessary, it can be tilted forward and overlapped with the seat part. To provide a hinge for a reclining seat which is capable of tilting backward in a horizontal state and has a simple structure. Another object of the present invention is to provide a hinge suitable for an auxiliary seat that can be folded and stored as desired.

Next, the present invention will be explained by way of an embodiment with reference to the drawings. In the figure, the hinges 4 of the reclining seat of this example are attached to both sides of a foldable auxiliary seat 1 on the rear floor F of a van-type vehicle. Note that the hinges on both sides have the same structure and perform the same function, so in this example, the hinge 4 attached to the left side of the auxiliary seat 1 will be explained.

The hinge 4 of this example has a hinge arm 6 interposed between a base bracket 5 fixed to the seat portion 3A side and a hinge bracket 7 fixed to the backrest portion 3B side. The hinge arm 6
One end is supported by the base bracket 5 through a first support shaft 8, and the other end is supported by a second support shaft 9 at the lower end of the hinge bracket 7, and the first support shaft 8 and the second support shaft A locking pin 10 is protruded from the middle part of the support shaft 9, and the end on the first support shaft 8 side (lower end in FIG. 2) is an arcuate side 6A centered on the first support shaft 8. A concave engagement groove 6 is provided at a predetermined location.
B is formed. On the other hand, base bracket 5
The engaging portion 11 at the tip is opened by operating the handle portion 11A.
An operating lever 11 whose portion B is engaged and disengaged from an engagement groove 6B of the hinge arm 6 is supported by a support shaft 12, and there is a space between the locking piece 11C on the tip side of the operation lever 11 and the first support shaft 8. A tension spring 13 is hung that urges the locking portion 11B side of the operating lever 11 toward the first support shaft 8 side. Note that the engaging portion 11B of the operating lever 11
When the hinge arm 6 is engaged with the engagement groove 6B, the hinge arm 6 is held in the upright position. The base bracket 5
The rear side 5B above the first support shaft 8 is the hinge arm 6
is formed in a curved shape so that it can freely rotate back and forth about the first support shaft 8 within a predetermined rotation range from the upright position to a predetermined backward tilted position (where the backrest becomes flat), and There are locking pins 1 at both ends of side 5B.
Stopper pieces 5A and 5C that come into contact with 0 and restrict rotation
is installed protrudingly. Further, the end side 7A of the hinge bracket 7 on the second support shaft 9 side extends from the second support shaft from a predetermined upright position with respect to the hinge arm 6 to a position where the backrest portion 3B and the seat portion 3A can overlap. A stopper piece 7B is provided on the lower end side of the end side 7A to abut on the locking pin 10 and prevent rearward rotation. There is. That is,
The hinge 4 in this example is the backrest portion 3B of the auxiliary seat 1.
In the normal seat state where the operator is standing upright (see FIGS. 1 and 2), the engaging portion 11B of the operating lever 11 is engaged with the engaging groove 6B of the hinge arm 6, and the handle of the operating lever 11 is in a state of being engaged with the engaging groove 6B of the hinge arm 6. When the portion 11A is pulled up, the engaging portion 11B is disengaged from the engaging groove 6B, and the hinge arm 6 moves along with the hinge bracket 7 until the locking pin 10 comes into contact with the stopper piece 5C on the rear side of the base bracket 5. It can freely tilt backward around the support shaft 8. Note that when the hinge arm 6 rotates, the arcuate side 6A is moved while coming into contact with the engaging portion 11B of the operating lever 11.

In the hinge 4 of this example, the base bracket 5 is attached to the rear end of the side of the seat 3A, and the hinge bracket 7 is attached to the side of the backrest 3B near the seat 3A. 3B is in an upright state (normal state) in which it is slightly tilted backwards from a right angle to the seat portion 3A (see FIGS. 1 and 2). If the backrest 3B is to be tilted backwards (see FIGS. 4 and 1), the handle 11A of the operating lever 11 is pulled up and the backrest 3B is tilted backwards.
The bed can be placed horizontally at the same position as the seat portion 3A. That is, by pulling up the handle portion 11A of the operating lever 11, the engagement portion 11B at the tip is disengaged from the engagement groove 6B of the hinge arm 6, and the hinge bracket 7 is moved together with the hinge arm 6 to the first support shaft 8.
The locking pin 10 of the hinge arm 6 is attached to the stopper piece 5C of the base bracket 5.
The backrest portion 3B is held in a horizontal (flat) state. In addition, in order to return the backrest portion 3B that has been tilted back in a flat shape to its normal state, the backrest portion 3B is erected forward, and the operations in the reverse order when tilting back are performed, and the engagement of the hinge arm 6 is performed. The engagement portion 11B of the operating lever 11 engages with the engagement groove 6B again, and the backrest portion 3B is fixed in its normal state (see the solid line portion in FIG. 1 and FIG. 2).

Next, when the backrest part 3B in the normal state is tilted forward to overlap the seat part 3A (see Fig. 5 and the dashed dotted line in Fig. 1), the backrest part 3B is moved forward without operating the operating lever 11. It can be polymerized by knocking it down. That is, in the normal state of the auxiliary seat 1, the engaging portion 11B of the operating lever 11 is engaged with the engaging groove 6B of the hinge arm 6, and the hinge arm 6 does not rotate, so the hinge bracket 7
is rotated forward about the second support shaft 9, the backrest portion 3B is overlapped with the seat portion 3A, and the auxiliary seat 1 is stored with its legs 2, 2 also folded. In addition, when returning the backrest part 3B that overlaps the seat part 3A to its normal state, the seat can be made available again by raising the backrest part 3B to the rear side (see FIG. 1). Although the hinge 4 in this example is attached to the auxiliary seat 1 that is folded, it can also be applied to a seat that is not folded.

As explained above, the present invention has a structure in which one end is pivoted to the base bracket by the first support shaft and the other end is pivoted to the base bracket between the base bracket attached to the side of the seat and the hinge bracket attached to the side of the backrest. A hinge arm is interposed between the hinge arm and the hinge bracket, and the base bracket is provided with an operation lever for engaging and disengaging the hinge arm at a predetermined upright position, and the hinge arm is connected to the first support shaft of the hinge arm at a predetermined upright position. A locking pin is provided protruding from the middle part of the second support shaft, and the rear side of the base bracket is connected to the first support shaft until the hinge arm reaches an almost horizontal position behind the upright position.
The hinge bracket is formed into a predetermined shape with stopper pieces that abut the locking pin on both sides of the rear side so that it can reciprocate about the support shaft, and the hinge bracket has a second support shaft end side. A hinge formed in a predetermined shape and provided with a stopper piece that abuts a locking pin on the lower end side of the end so that the hinge can be tilted back and forth about a second support shaft from a predetermined upright position to a substantially horizontal position in front of the predetermined standing position. As a result, the intended objectives will be achieved. That is, in the hinge arm of the present invention, when the backrest is in its normal state, the hinge arm is locked by the operating lever, and the hinge bracket is tilted backwards because the locking pin contacts the stopper piece on the lower end side of the hinge bracket. The backrest will not be made available. In the hinge of the present invention, by releasing the lock of the operating lever, the hinge arm can be tilted backwards along with the hinge bracket around the first support shaft.
The backrest is tilted backwards and held horizontally in the same way as the seat until the locking pin comes into contact with the stopper piece on the rear side of the base bracket. In addition, in the hinge of the present invention, the hinge bracket is freely tiltable forward about the second support shaft, so in the normal state of the backrest, the hinge arm is locked to the operating lever, and only the hinge bracket is tilted forward. The backrest portion is superimposed onto the seat portion. In the hinge of the present invention, the hinge arm and the hinge bracket are prevented from falling backward by the locking pin protruding from the hinge arm and the stopper piece of the hinge arm or the stopper piece of the hinge bracket. The locking means for preventing the seat from falling backwards has a simple structure, and is preferable not only as a hinge for an auxiliary seat but also as a hinge for a general reclining seat.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is an explanatory diagram showing the left side of an auxiliary seat with the hinge of this embodiment attached, and Fig. 2 is a front view showing the normal state of the hinge of this embodiment. Figure 3 is a cross-sectional view of the hinge taken along the line in Figure 2, Figure 4 is an explanatory diagram showing the function of the hinge when the backrest is tilted backwards and is in a fully flat state, and Figure 5 is a diagram showing the hinge when the backrest is tilted forward and the seat is in a fully flat state. FIG. 3 is an explanatory view showing the function of the hinge in a state where the parts are superimposed on each other. 3A...Seat part, 3B...Backrest part, 4...Hinge, 5...Base bracket, 5A, 5C, 7
B... Stopper piece, 5B... Rear side, 6... Hinge arm, 6A... Arcuate side, 6B... Engagement groove, 7
...Hinge bracket, 7A...End side, 8...
First support shaft, 9... Second support shaft, 10... Locking pin,
11...Operation lever, 11A...Handle part, 11B
...Engagement part.

Claims (1)

[Scope of utility model registration request] a base bracket attached to the side of the seat;
A hinge arm is interposed between the hinge bracket attached to the side of the backrest portion, and the hinge arm has one end pivoted to the base bracket via a first spindle and the other end pivoted to the hinge bracket via a second spindle. , the base bracket is provided with an operation lever for engaging and disengaging the hinge arm at a predetermined upright position, and a locking pin is provided protrudingly at the intermediate portion of the first and second support shafts of the hinge arm, so that the base bracket is The rear side is formed into a predetermined shape with stopper pieces that abut the locking pins on both sides of the rear side so that the hinge arm can reciprocate about the first support shaft from the upright position to a substantially horizontal position; The end side of the hinge bracket on the side of the second support shaft has a locking pin on the lower end side of the end side so that the hinge bracket can reciprocate about the second support shaft to a substantially horizontal position in front of a predetermined upright position. A hinge for a reclining seat, characterized in that it is formed into a predetermined shape with a stopper piece that comes into contact with the hinge.