JPS647072Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to rear seat cushions for automobiles, and is particularly used for automobiles with back doors, in which the front end of the seat cushion is pivotally supported toward the body side so as to stand up forward. The present invention also relates to an improvement in a rear seat cushion for an automobile in which the seat back is also moved forward to expand the cargo space at the rear of the vehicle interior.

Conventionally, in so-called two-box vehicles such as light vans and wagons that have back doors, the rear seat backs can be folded forward to expand the cargo space behind them. If the seat bag is simply folded down onto the top surface of the seat, the back surface of the seat bag that is folded forward may be tilted significantly, or a large step may be created between the back surface of the seat bag and the deck surface, making it inconvenient to use.

In order to solve this problem, as shown in FIG.
There is one that is constructed so that it can stand up in front of it with the seat cushion 1 as its center of rotation, and the seat back 3 is folded forward into the space created by the upright movement of the seat cushion 1.

The above-mentioned anti-rotation type rear seat cushion 1 wobbles and becomes unstable when raised from the seated state, and also causes inconveniences such as vibration or so-called chatter when the vehicle is running in the raised state. .

In order to solve this problem, the frame 4 of the conventional rotary rear seat cushion 1 of this type is made of an iron plate that covers the entire back surface of the seat cushion in order to obtain the necessary rigidity and strength, as shown in FIG. Reinforcement members 6 and 7 made of iron plates were integrally provided at the attachment portion or the peripheral portion of 2.

Reference numeral 8 in FIG. 1 is a front seat, reference numeral 9 in FIG. 3 is a pad that is placed above the frame 4, and 1
0 indicates a cover that covers the pad from above, and 11 indicates a welding nut welded to the frame 4 for attaching the hinge 2.

In the rotary rear seat cushion 1, the frame 4 itself has to be a large press-molded product, which is expensive to manufacture, and when combined with the reinforcing members 6 and 7, the weight becomes quite large, making it inconvenient to handle. This also had the disadvantage of having a negative impact on the fuel efficiency of automobiles.

SUMMARY OF THE PRESENT EMBODIMENT The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a rear seat cushion for an automobile which is lightweight, has a simple structure, and has high rigidity.

This invention is based on a rear seat cushion for an automobile whose lower front end is pivotally supported to the body through a pair of left and right hinge brackets, and is made of a substantially U-shaped member of relatively low rigidity such as a steel pipe. a main frame connected and pivoted to the pair of left and right hinge brackets such that the U-shaped opening faces forward, and two opposing sides of the U-shape protrude rearward from the pair of left and right hinge brackets; a sub-frame made of a relatively low-rigidity member such as a wire rod, welded to the hinge bracket at the base end, larger than the main frame, and retaining the outer shape of the seat cushion; The above object is achieved by providing a frame structure including a connecting member that connects the main frame.

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

In these embodiments, the same or corresponding parts as those of the conventional rear seat cushion shown in FIGS. 1 to 3 are designated by the same reference numerals, and the explanation thereof will be omitted.

FIG. 4 is a perspective view showing an embodiment of a frame structure used in a rear seat cushion for an automobile according to the present invention.

This embodiment is a rear seat cushion 1 for an automobile whose lower front end is pivotally supported to the body side via a pair of left and right hinge brackets 12, and a steel pipe is formed into a substantially U-shape and the ends thereof are Main frame 13 with hinge bracket 12 welded to it
and a frame structure F including a subframe 14 made of a wire rod that maintains the outer shape of the seat cushion 1, and a connecting member 15 made of a wire rod that connects the subframe 14 and the main frame 13. be.

The main frame 13 is welded to the hinge brackets 12 so that the U-shaped opening faces forward and the two opposing sides of the U-shape protrude rearward from the pair of left and right hinge brackets 12. Connected in the width direction of the vehicle. Further, the position and size of the main frame 13 are such that it covers approximately 1/3 of the range from the front end in the depth direction and approximately 1/2 of the center in the width direction when the seat cushion 1 is in the seating surface state. It is being done.

The sub-frame 14 has a substantially U-shape that is larger than the main frame 13, and extends across approximately two-thirds of the center in the width direction and extends from the front end to the rear end in the depth direction. The extending iron wire frame 14A is a pair of substantially C-shaped parts, which are welded to the front end of the iron wire frame 14A and the hinge bracket 12, and extend over the entire width of the seat cushion in the width direction, and in the depth direction. Approximately 2/
The steel wire frame 14B extends over a range of 3.

Further, the connecting member 15 is composed of three iron wire frames extending in parallel in the front-rear direction of the seat cushion, and is welded to each of the wire frames 14B, the main frame 13, and the iron wire frame 14A so as to connect them in the front-rear direction. It is something.

In this embodiment, the main frame 13 is made of a pipe and has sufficient rigidity, so when the seat cushion 1 is erected, it plays the role of a load-carrying stopper and is connected to the left and right hinges 2. Also, the subframe 14 is
Since it is welded to the hinge bracket 12 at the base end and is larger than the main frame 13, even if external force is applied when raising the seat cushion 1 or due to vibration while the vehicle is running, the force will not be applied. is transmitted to the main frame 13 via the subframe 14 and the connecting member 15, and the load is further transferred to the vehicle body 16 via the hinge 2.
It will be supported by the side. Therefore, there is no feeling of weak force when raising the seat cushion 1 or chatter due to vibrations while the car is running.
In other words, the weight of the frame structure F of the seat cushion can be reduced without reducing the rigidity.

In particular, in this embodiment, the main frame 13 has a width necessary to connect the left and right hinges 2, a height necessary to function as a load stopper when the seat cushion 1 is erected, Since it is sufficient to have the following, it is possible to reduce the weight of the frame structure F of the seat cushion 1.

Also, the length of the main frame 13 in the front and rear direction is
Since the main frame 13 only needs to be able to function as a luggage stopper as described above, the main frame 13 does not reach the lower side of the buttocks of the occupant seated on the seat cushion 1, so that the seated occupant does not feel uncomfortable.

In addition, in the above embodiment, the main frame 1
3 is constituted by a pipe, but it may be an iron plate having a certain width as long as it has sufficient rigidity. Similarly, the subframe 14 and the connecting member 15 may be replaced with iron plates or the like as long as they are lightweight and have a certain degree of rigidity.

Since the present invention is constructed as described above, it has the excellent effect of being able to reduce the weight of the frame structure while maintaining sufficient rigidity and without giving a feeling of discomfort to the seated occupant.

The rear seat cushion of the present invention also has the advantage that it can be used in so-called 3-box type vehicles in which there is no need to fold the rear seat forward by omitting the main frame.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing the main parts of an automobile with the rear seat folded forward, Fig. 2 is a perspective view showing a conventional rear seat cushion, and Fig. 3 is a cross-sectional view taken along the - line in Fig. 2. FIG. 4 is an exploded perspective view showing a conventional rear seat cushion, and FIG. 4 is a perspective view showing a frame structure in an embodiment of the rear seat cushion for an automobile according to the present invention. 1... Seat cushion, 2... Hinge, 3...
...Seat bag, 12...Hinge bracket, 1
3... Main frame, 14... Sub frame,
14A, 14B... Steel wire frame, 15... Connecting member, F... Frame structure, 17...
Hinge.

Claims (1)

[Scope of utility model registration request] In an automobile rear seat cushion, the lower front end of which is pivotally supported to the body side via a pair of left and right hinge brackets, the cushion is made of a substantially U-shaped member of relatively high rigidity such as a steel pipe, and has an opening in the U-shape. a main frame connected to the pair of left and right hinge brackets and pivotally supported on the body side such that the main frame faces forward and the two opposing sides of the U-shape protrude rearward from the pair of left and right hinge brackets; a sub-frame made of a relatively low-rigidity member such as a seat cushion, which is welded to the hinge bracket at its base end, and which is larger than the main frame and maintains the outer shape of the seat cushion; A rear seat cushion for an automobile, comprising a frame structure including a connecting member for connecting frames.