JPH0658756U - Retractable seat back frame structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In a frame of a folding bench type seat back, the frame is a blow molded product having a predetermined strength. [Structure] A frame main body (A) is blow-molded, and a groove (1) is provided on the back side of the frame body. A pipe reinforcing material (B) is inserted into the groove (1), and ) Is provided with a protrusion (11) at the edge of the groove (1) in order to prevent the groove (1) from escaping.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a frame structure of a retractable seat back (backrest part) of an automobile seat (seat), more specifically, it is a bench type for two or three people. The present invention relates to a hollow plate-shaped frame made of a blow molded product in a seat back that can be used.

[0002]

[Prior art]

 For conventional seat backs that support the frame on the vehicle body side for one-person use, there is a seat back that uses a synthetic resin frame made of a blow molded product for the purpose of weight reduction and the like. Since this frame is molded into a plate shape that is almost the same size as the back of the seat back, there is no need for a support member for supporting the foam pads that make up the seat back or a backboard provided on the back side. There is. By the way, a bench type for two or three people, which can be used as a cargo bed on the back side by tilting it forward, requires a frame with a strong strength. Frames consisting of cannot be used.

In the above-mentioned retractable seat back, a metal pipe is bent in a frame shape, and a reinforcing rod made of a pipe is welded across the upper and lower parts thereof, and a foam cushion body is attached to the frame. A support member is installed to support the backboard, and a backboard made of a hard plate is fixed to the back side to prevent damage to the back and back sides due to contact with luggage.

[0004]

[Problems to be solved by the device]

 Therefore, the conventional retractable bench-type seat back has many components, which makes the structure complicated. Therefore, an object of the present invention is to provide a frame made of a blow-molded product that can be used in a bench-type seat back that is a retractable type with a simple structure.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the frame of the retractable seat back according to the present invention includes a substantially plate-shaped frame body made of a blow molded product having a recessed groove on the back side, and a recessed groove in the frame body. A reinforcing member made of a pipe to be inserted, and a protrusion for preventing separation of the reinforcing member inserted in the groove is provided at an edge of the groove of the frame body. Is.

It is preferable that the above-mentioned protrusions are formed at the same time when the frame body is blow-molded, and the protrusions are alternately provided at one edge portion and the other edge portion of the concave groove with a space therebetween. It is preferable that flexible portions formed by slits are provided at the edges of the concave grooves facing each other so that the reinforcing material can be easily inserted into the concave grooves.

[0007]

[Action]

 The frame body is reinforced by the formation of the groove and the pipe reinforcing material inserted in the groove, and the reinforcing material inserted in the groove of the frame body is provided at the edge of the groove. The protrusion prevents the detachment and fixes it to the frame body.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, in which (A) is a synthetic resin frame main body formed into a hollow shape by blow molding, and (B) is a substantially U-shaped fold. Shows a pipe reinforcement made of a rigid member such as a bent hard synthetic resin or metal.

The above frame body (A) has its back surface (a) side formed into a flat shape, and this back surface (a) side serves as the back and back of the seat back, and becomes the cargo bed when the seat back is tilted horizontally forward. . A groove (1) is formed at the same time when the frame body (A) is formed along the periphery of the back surface (a) side except the lower portion, and a large number of protrusions are formed on the edge of the groove (1). (11) ... Are integrally molded alternately at intervals. As shown in FIG. 2, each projection (11) is formed so as to project outward toward the rear surface, toward the edge of the facing groove (1).

The reinforcing material (B) is a pipe having an outer diameter that fits in the groove (1) and is pressed into the groove (1) against the elasticity of the protrusion (11). Insert. The reinforcing material (B) may be integrally fixed to the frame body (A) during blow molding of the frame body (A).

The frame body (A) is desired to be reinforced by providing irregularities on its surface (b) side, and the foam pad (C) constituting the seat back is provided on this surface (b) side. In addition, by covering this with a skin (D), a seat back (SB) is formed as shown in FIG. The seat back (SB) is connected to the seat cushion (SC) by a reclining device or other forward tilting device (not shown), and the back and back of the seat back tilt forward in a substantially horizontal state as shown by the phantom line in FIG. Then, the carpet (E) is fixed to the back surface (a) side of the frame body (A), and the back and back of the seat back (SB) which is tilted forward serves as a cargo bed on which the carpet (E) is laid.

A movable arm (not shown) that constitutes the forward tilting device is connected to both ends of the reinforcing member (B) and the frame body. After the reinforcing material (B) is inserted into the concave groove (1) of the frame body (A), it is prevented from coming off the frame body (A) by the protrusions (11).

FIG. 4 and FIG. 5 show a second embodiment of the present invention. In this embodiment, the edges of the concave groove (1) facing each protrusion (11) in the first embodiment. Is provided with a flexible portion (12) formed by a plurality of slits (12a) to improve the insertability of the reinforcing material (B) into the concave groove (1). Each slit (12a) ... is formed toward the inside of the concave groove (1), the flexible portion (12) bends as shown by the phantom line in FIG. 5, and the narrow portion widens by the protrusion (11). Then, the reinforcing material (B) can be easily inserted.

[0014]

[Effect of device]

 According to the present invention, since the frame body is reinforced by the concave groove formed on the back surface side and the reinforcing material inserted in the concave groove, it can be used as a frame of a retractable bench type seat back. By using such a frame, the conventional backboard and foam pad supporting member are not required, and a seatback having a simple structure and light weight can be provided.

Further, since the pipe-made reinforcing material is inserted into the groove of the frame body and the detachment of the reinforcing material is prevented by the protrusion provided on the edge of the groove, the reinforcing material is attached to the frame body. Certainly fixed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view of an essential part showing a first embodiment of the present invention.

FIG. 4 is a perspective view showing a frame body according to a second embodiment of the present invention.

5 is a cross-sectional perspective view of the main part of FIG.

FIG. 6 is a cross-sectional view showing a usage state of the present invention.

[Explanation of symbols]

 A Frame body B Reinforcement material 1 Recessed groove 11 Projection

Claims (2)

[Scope of utility model registration request] 1. A substantially plate-shaped frame main body made of a blow molded product having a concave groove on the back side, and a pipe-made reinforcing member inserted into the concave groove of the frame main body, wherein the concave groove of the frame main body is formed. A frame structure for a retractable seat back, characterized in that a protruding portion for preventing the reinforcing material inserted into the concave groove from coming off is provided at an edge portion of the. 2. The frame structure for a foldable seat back according to claim 1, wherein a flexible portion formed by a slit is provided at an edge portion of the concave groove facing the protrusion.