JPH017628Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a back frame for a rear seat for a vehicle. More specifically, the present invention relates to a back frame for a rear seat for a vehicle. More specifically, the present invention relates to a back frame for a rear seat for a vehicle. Regarding back frames.

Recently, as shown in Figs. 1 and 2, synthetic resin frames 2 are often used for back frames for vehicles due to the desire to reduce the weight of vehicles, and this synthetic resin frame 2 is made into a hollow shape by blow molding. If the luggage stopper part 3 is integrally formed to protrude from the back side when molding the synthetic resin frame 2, the luggage stopper part 3 has the disadvantage of becoming thin, making the quality of the synthetic resin frame 2 unstable and reducing productivity. Moreover, when the thickness of the luggage stopper part 3 is increased, the thickness of other parts becomes thicker than necessary, resulting in an increase in the amount of thermoplastic resin used.

The purpose of this invention is to provide a rear seat for a vehicle that fully satisfies the demand for weight reduction of vehicles, has a strong luggage stopper part, and is highly economical since it does not require an increase in the amount of thermoplastic resin used. This will become clear from the detailed description below with reference to the drawings.

3 and 4 schematically show an embodiment of a back frame for a rear seat according to the present invention, and this back frame 11 is made of thermoplastic resin molded into a hollow shape by blow molding. It consists of a synthetic resin frame 12 and a reinforcing member 13 having a fitting part 13a having a substantially U-shaped cross section and fixed to the upper end of the back frame 11 at a position corresponding to the luggage stopper part 11a.

The reinforcing member 13 is attached to the synthetic resin frame 12.
The reinforcing member 13 is made of a stronger steel plate or a drawn product of synthetic resin, and constitutes a part of the luggage stopper portion 11a.

When molding the synthetic resin frame 12, the reinforcing member 13 is inserted into the end of a blow molding die (not shown) to prevent the thermoplastic resin from entering the outside of the portion of the reinforcing member 13 where the fitting portion 13a is located. is being done. That is, the reinforcing member 13 is located at the end of the blow molding die, and the luggage stopper portion 12a of the synthetic resin frame 12 is formed inside the U-shaped fitting portion 13a. Therefore, due to the presence of the reinforcing member 13, the luggage stopper portion 12a of the synthetic resin frame 12 is formed into a substantially U-shaped cross section smaller than the reinforcing member 13, and is integrally formed with the reinforcing member 13 in a fitted state. .

The above is the configuration of one embodiment of the back frame of the rear seat according to the present invention. According to this configuration, the back frame includes a hollow synthetic resin frame made by blow molding using thermoplastic resin, The seat back pad can be made thinner by the thickness of the resin frame, satisfying the desire for a lighter seat, and the luggage stopper part of the back frame has a double structure of the synthetic resin frame and reinforcing member. There is no need to bond them together using adhesives, which improves work efficiency and significantly improves strength.When this luggage stopper part is formed only from a synthetic resin frame. It is possible to obtain a back frame for a rear seat of a vehicle which is excellent in economical efficiency and can reduce the amount of thermoplastic resin used compared to the above.

FIG. 5 shows a modified example of the back frame of the rear seat according to the present invention, and the parts of this back frame 11' that correspond to those of the embodiment described above are given the same reference numerals and will not be described in further detail. Although this is omitted, the fitting portion 13b is a state in which the reinforcing member 13 has both ends of the U-shaped cross section bent further inward.
It has the same structure as the embodiment described above, except that the luggage stopper part 12b of the synthetic resin frame 12 is formed so as to sandwich both ends of the reinforcing member 13.

According to such a configuration, in addition to having the above-mentioned effects, there is also an effect that the bonding state between the strong member 13 and the synthetic resin frame 12 is further strengthened.

[Brief explanation of the drawing]

Figures 1 and 2 are a perspective view and a side sectional view of a back frame of a conventional vehicle rear seat, respectively;
4 and 4 schematically show an embodiment of a back frame for a rear seat for a vehicle according to the present invention, respectively, in which FIG. 3 is a perspective view, FIG. 4 is a side sectional view, and FIG.
The figure is a side sectional view showing a modification of the present invention. In the figure, 11, 11'...back frame, 11
a...Luggage stopper part, 12...Synthetic resin frame, 12a, 12b...Luggage stopper part of synthetic resin frame, 13...Reinforcement member, 13
a, 13b...Fitting portion of reinforcing member.

Claims (1)

[Scope of utility model registration request] A synthetic resin frame made of thermoplastic resin is molded into a hollow shape by blow molding and has a luggage stopper part protruding from the upper end of the back side, and when the synthetic resin frame is blow molded, a luggage stopper part of the synthetic resin frame is formed into a hollow shape. and a reinforcing member having a fitting portion having a substantially U-shaped cross section that is fixed in a fitted state, and the reinforcing member constitutes a luggage stopper portion of the back frame together with a luggage stopper portion of the synthetic resin frame. A rear seat back frame for vehicles that use