JPH0428842Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a hinged seat in which the seat back is hinged to the seat cushion and is folded forward, and in particular, a hinged seat in which the seat back is folded forward without jumping out backwards. The present invention relates to a hinged seat configured as follows.

[Prior art and problems]

Hinged seats in which a seat back is hinged to a seat cushion and folded forward are widely known. This hinged seat is used, for example, as a rear seat of an automobile, and by folding the seat back forward, a luggage compartment is established in the rear space of the automobile. It is also widely used in automobile front seats.

As shown in FIG. 13, in the conventional hinged seat 210, a hinge bracket 216 is fixed to the seat cushion 212 on both left and right sides, and a pin 220 extending from the seat back 214 is pivotally supported by the hinge bracket. . The seat bag 214 is configured to be tilted forward using this pin 220 as a hinge (fulcrum).

However, in such a conventional configuration, the hinge 2
When the seat bag 214 is folded forward, a portion of the seat bag below the seat bag 20 (lower part of the seat bag) protrudes rearward as shown by a dashed line.

Here, if the position of the pin 220 is set downward, the protrusion of the seat bag can be suppressed. However, when adopting a hinged seat as the rear seat of a car, the seat back 214
It is desired to move forward to a nearly horizontal position. If the pin 220 is provided below, the seat back 214 connects to the seat cushion 212 at an early stage of forward folding, and the seat cushion prevents the seat back from being folded down to a substantially horizontal position. Therefore, in general, emphasis is placed on folding the seat forward to a substantially horizontal position, and the pin 220 is not set too far down, so that it is inevitable that the seat back 214 will pop out when the seat is folded forward.

Therefore, if there is an obstacle 211 behind the seat back 214, such as a partition from the trunk room or a protrusion of a rear wheel, it becomes impossible to fold the seat back forward. Therefore, it is necessary to provide a space behind the seat bag 214 that allows the lower part of the seat bag to protrude. However, this space needs to be kept open at all times to allow the lower part of the seat bag to protrude, so it becomes a dead space and cannot be used effectively.

Further, when a hinged front seat or a rear seat of an automobile is adopted, the seat back that is folded forward vibrates up and down as the automobile moves, causing so-called flapping. Therefore,
It is necessary to fix the seat back when it is tilted forward, and a fixing device called waving is used to fix the seat back. As shown in FIG. 13, the waving 213 has one end fixed to the lower center front end of the seat cushion 212 and a free end detachably connected to the upper front end of the seat bag 214, thereby controlling the movement of the seat bag. It is configured to seal and prevent the occurrence of flapping. However, when the seat is in use, ie, when the seat bag 214 is not folded forward, the waving 213 is not used and its free end hangs down. Usually, no measures are taken to prevent the waving 213 from sagging, which gives an undesirable visual impression. Furthermore, there is a risk that the unused waving 213 may get tangled with one's feet when getting on or off the vehicle, or may become an obstacle to opening and closing the door.

[Purpose of invention]

The object of this invention is to provide a hinged seat that can be folded forward to a nearly horizontal position without creating a dead space behind the seat back.

[Summary of the idea]

To achieve this objective, according to the invention, first and second pins extend from the sides of the seat bag. A guide hole and a link are provided in the hinge bracket. Here, the second pin is located above the first pin, and the first pin is loosely fitted into the guide hole so as to guide the first pin when the seat bag is rotated. Further, the link is configured such that a second pin is pivotally attached to one end thereof, and movement of the second pin is restricted when the seat bag is rotated.

〔Example〕

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the hinged seat 10 according to this invention includes a seat cushion 12 and a seat bag 14 that is hinged to the seat cushion and can be folded forward. There are hinge brackets 16 on both the left and right sides of the seat cushion 12.
are respectively provided, and the lower part of the hinge bracket 16 is fixed to the seat cushion by studs 18 and 19.

As shown in FIG. 1 with the seat back 14 separated and shown by the dashed line, the first and second pins 20 and 21 are
The second pin extends from the side of the seat bag 14 and is provided above the first pin. And the first
In addition to the figure, as you can clearly see by looking at Figure 2,
A guide hole 24 through which the first pin 20 is inserted, and a link 26 to which the second pin 21 is pivotally attached to the free end,
It is provided on the hinge bracket 16. The guide hole 24 is in the form of a long hole that is substantially parallel to the rear edge of the hinge bracket 16, and the first pin 20 is guided by this guide hole and moves upward, thereby ensuring that the seat bag is tilted forward. Further, the link 26 is pivotally supported on the hinge bracket 16 by a pivot pin 28, and a second pin 21 is pivotally attached to a mounting hole provided at the free end. A locking groove 30 for housing the second pin 21 and preventing rotation of the link 26 is formed on the front surface of the hinge bracket 16.

In the hinged seat 10 having the above configuration, in the use position where the seat back 14 is not tilted forward,
As shown in FIGS. 2 and 3, the first pin 20 is
Abuts against the lower end of the guide hole 24, and the second
The pin 21 is housed in the lock groove 30. In addition,
A stopper (not shown) prevents the seat bag 14 from falling backward.

In order to move the seat back 14 forward, in FIG. 3, while applying a forward moment M,
If the second pin 21 at the tip of the link is pushed out of the lock groove 30, the seat bag 14 can be moved forward. As the seat bag 14 is tilted forward, the first pin 20 in the guide hole 24 is guided by the guide hole and rises. And link 26
controls the movement of the seat back 14 to ensure smooth inclination.

When the seat bag 14 is rotated to a predetermined position, the first pin 20 reaches the upper end of the guide hole 24, the second pin 22 is retracted into the lock groove 30, and the seat bag is tilted almost horizontally (first (See Figures 5 and 6).

As mentioned above, in this invention, the hinge (fulcrum)
The first pin 20, which acts as a first pin 20, is configured not to remain in a fixed position but to move upward. The link 26 restricts the movement of the seat back 14 to ensure smooth forward movement. With this configuration, as can be clearly seen from FIGS. 4 to 6, when the seat bag 14 is folded forward, the contact of the seat bag with the seat cushion 12 is delayed, and contact at an early stage is prevented. and,
The seat bag 14 can be smoothly folded down to a substantially horizontal position. Therefore, the first pin (hinge) 20 can be set sufficiently downward on the side of the seat cushion 14, and the part of the seat back below the hinge (the lower part of the seat back) will not protrude rearward.
Prevented. Therefore, there is no need to provide a dead space behind the seat bag 14, and the space can be used effectively.

Also, when the seat back 14 is tilted forward,
Since the second pin 21 is housed in the lock groove 30,
Seat back 1 is blocked by the upper and lower walls of the lock groove.
The vertical movement of 4 is restricted. Therefore, if the hinged seat 10 of this invention is adopted as an automobile seat, the flapping of the seat back 14 can be suppressed.

Hinged seat 1 according to the second embodiment of this invention
10 is shown in FIGS. 7 and 8. Also in this hinged seat 110, the first and second pins 120, 121 are attached to the seat back 1, as in the first embodiment.
A guide hole 124 extending from the side surface of 14 and into which the first pin is inserted, and a link 1 to which the second pin is pivotally connected.
26 are provided on the hinge bracket 116. Note that reference numeral 112 indicates a seat cushion, 118 and 119 indicate studs, and 128 indicates a pivot pin.

The hinged seat 110 of the second embodiment differs from the first embodiment in the shape of the guide hole 124 and the provision of a latch 132. In other words, the guide hole 124 of the hinged sheet 110 is formed so as to move away from the rear edge of the hinge bracket 116 as it goes upward. In such a configuration, when the seat bag 114 falls forward, the first pin 120, which is a hinge, moves forward while rising, thereby further preventing the lower part of the seat bag from protruding. especially,
This configuration is effective when the first pin 120 must be provided upward to some extent.

Also, as can be clearly seen from Figure 8, latch 1
32 is pivotally supported on the hinge bracket 116 by a pivot pin 134, and a lock groove 136 into which the second pin 121 is inserted is formed at its free end. The claw 132a of the latch is formed approximately at right angles to the lock groove 130 so as to prevent the second pin 121 inserted into the lock groove 130 of the link from coming off from the lock groove 130 (see FIG. 9). .

Since the second pin 121 inserted into the lock groove 130 of the link is further inserted into the lock groove 136 of the latch 132, the vertical movement of the second pin is caused by the lock groove 130, and the left and right movement is caused by the lock groove 136. Therefore, each of them is regulated, and the movement of the link 126 is completely blocked. In other words, the second pin 121 is
It locks without any play. Therefore, in the forward position (see FIG. 12), flapping can be sufficiently prevented, and there is no need to use waving to block the movement of the seat back 114 in the forward position. Moreover, even in the use position (see FIG. 10), a stable posture without wobbling can be obtained.

Thus, in the configuration using latch 132,
Even in the use position, the latch is used effectively,
It does not give a visually complicated impression. Also,
This hinged seat 11 is used as a car seat.
Even if 0 is adopted, latch 132 is pressed when getting on and off.
There is no risk of your feet getting tangled or becoming an obstacle to opening and closing the door.

It goes without saying that in FIG. 10, if the latch 132 is rotated counterclockwise to release the second pin 121 from the second pin 121, the seat back 114 can be folded forward (see FIG. 11).

Also, applying a counterclockwise biasing force to the latch 132 around the pivot pin 134, the second pin 121
It is preferable that the lock hole 136 be inserted into the lock hole 136 against this biasing force in the use position and the forward position. In this configuration, the hinged seat 110
can be automatically locked in the use position and the forward position, and quick and reliable locking can be easily achieved.

The above-mentioned embodiments are for illustrating this invention, and are not intended to limit this invention in any way, and any modifications, modifications, etc. made within the technical scope of this invention are also included in this invention. Needless to say, it will be done. For example, although the guide hole is formed in a straight line shape, it may be formed in a partial ring shape. Further, although the hinged seat of this invention is most suitable as an automobile seat, it is not limited thereto. For example, the hinged seat of this invention can be applied to seats that are installed closely together in a limited space, such as in theaters and halls.

[Effect of idea]

As described above, in the hinged seat according to the present invention, the first pin, which acts as a hinge (fulcrum) of the seat back, is configured so that it does not stay at a fixed position but moves upward. Therefore, when the seat bag is folded forward, the seat bag does not come into contact with the seat cushion at an early stage, and the seat bag is folded to a substantially horizontal position. Therefore, the first pin can be set sufficiently downward on the side surface of the seat cushion, and the seat bag is prevented from protruding rearward. Therefore, there is no need to provide a dead space behind the seat bag, and space can be used effectively.

Further, by forming a locking groove on the front end surface of the hinge bracket to accommodate the second pin and seal the movement of the link, the flapping of the seat back when the seat is folded forward can be controlled. Additionally, the back of the seat is prevented from wobbling during use, providing a stable posture.

Furthermore, if a locking groove is formed in the rotatable latch on the hinge bracket and the second pin is housed to seal the movement of the link, the flapping of the seat back when folded forward and the backlash of the seat back during use can be prevented. is sufficiently prevented.

Note that if the guide hole is formed so as to move away from the rear edge of the seat bag as it goes upward, the seat bag can be further prevented from flying out. With this configuration, even if the first pin is provided upward to some extent, the seat bag can be prevented from popping out.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of the hinged seat according to the invention, FIGS. 2 and 6 are enlarged right side views of the hinged seat in the use position and the forward position, and FIGS. 3 to 5 7 is a schematic perspective view of the hinged seat according to the second embodiment of this invention. FIG. 8 is a diagram showing the hinge bracket, etc. , FIG. 9 is an enlarged right side view of the hinged seat in the forward-folding position, FIGS. 10 to 12 are right side views of the hinged seat in the use position, halfway forward, and in the forward-folding position, FIG. 13 is a right side view of a conventional hinged seat in the use position. 10,110...Hinged seat, 12,11
2... Seat cushion, 14,114... Seat bag, 16,116... Seat bracket,
20,120...First pin, 21,121...Second pin, 24,124...Guide hole, 26,12
6... Link, 28, 128, 134... Pivot pin, 30, 130, 136... Lock groove, 132
...Ratsuchi.

Claims (1)

[Claims for Utility Model Registration] (1) In a hinged seat in which the seat bag is hinged to the seat cushion via a hinge bracket and can be folded forward, the first pin extends from the side of the seat bag, and the first pin extends from the side of the seat bag. Above, a second pin extends from the side of the seat bag, and a vertical guide hole through which the first pin is inserted is formed in the hinge bracket to guide the movement of the first pin when the seat bag rotates. A hinged seat, characterized in that a link is provided between the second pin and the hinge bracket to restrict movement of the first pin when the seat back is rotated. (2) The hinged seat according to claim 1, wherein a locking groove for housing the second pin and sealing the movement of the link is formed on the front end surface of the hinge bracket. (3) The latch is rotatably provided on the hinge bracket, and a locking groove for storing the second pin and sealing the movement of the link in the left and right direction is formed on the upper end surface of the latch. The hinged sheet according to item 1 or 2. (4) The hinged seat according to any one of claims 1 to 3, wherein the guide hole is formed so as to move away from the rear edge of the seat bag as it goes upward.