JPH0443058Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a school bag that prevents the sutures between the flap and the backrest plate from loosening prematurely.

Because the flaps of school bags tend to be subject to turbulence when children open and close them, conventional school bags have had the disadvantage that in some cases, the sutures between the back plate and flaps begin to loosen prematurely.

In order to eliminate the drawbacks of the conventional method, this invention aims to further tighten the sutured state after the flap and the back plate are sewn together, and the elastic back plate prevents the distortion caused by handling the flap. The purpose is to provide a school bag that can withstand use for many years by eliminating the need for a school bag.

That is, in the present invention, the reinforcing member 1, which is formed by integrally forming the opposing vertical pieces and the top piece connecting the vertical pieces, is fitted onto the upper end of the back plate, and the lower end of the one vertical piece is attached to the hanging lid. 2 and the back support plate 3 are press-fitted between the two so as to be close to the overlapping seam, and the other vertical piece is fixed to the overlapping part of the flap 2 and the back support plate 3. It depends.

An embodiment of this invention will be described with reference to the drawings. 1st
2 is a perspective view of a reinforcing member, and FIG. 3 is an enlarged sectional view taken along line A-A in FIG. 1.

As shown in FIG. 2, the reinforcing member 1 of this invention has a vertical piece 5 that contacts the outside of the back plate 3, a vertical piece 6 that contacts the inside, and the upper ends of the two opposing vertical pieces 5 and 6. It is formed by integrally forming connected top pieces 7.

The vertical piece 6 is provided with a through hole 8 at a predetermined position for fixing a screw. Also, there is an arc-shaped hole 9 below the center.
is formed in steps, and the hole 9 has an abutment that abuts on the inside of the back support plate 3 in order to screw the connection seat plate to which the connection ring 11 of the backpack belt 10 is attached to the outside of the back support plate 3. The contact plate 12 can be fitted. Further, this contact plate 12 is also provided with through holes 8 at predetermined positions for fixing screws. Note that this contact plate 12 may be integrally molded with the reinforcing member 1. The core member 3' of the back support plate 3 is a low-foamed synthetic resin plate, and the thick part has some elasticity and has the property of bending regardless of direction. The thickness of the upper end of the back support plate 3 is approximately the same as the length between the vertical pieces 5 and 6. The base end of the hanging lid body 2 is overlapped and sewn to the upper end of the back support plate 3. The reinforcing member 1 is located in the immediate vicinity of this suture thread 4.
A vertical piece 5 is inserted and interposed between the flap 2 and the back plate 3 so as to be pushed into the space. The sutured state of the suture thread 4 is further tightened by the intervention of the standing piece 5. In addition, since the upper end of the backrest plate 3 is covered with the reinforcing member 1, the upper end part does not curve when the flap is opened and closed, so that it always maintains a flat state along the vertical piece of the reinforcing member. This is something that can be done. The vertical piece 6 is fixed with screws 13 to the overlapped portion of the hanging lid 2 and the upper ends of the back plate. An abutting plate 12 is fitted into the hole 9 of the upright piece 6, and is fixed to the back plate 3 with screws 13 together with the connecting seat plate to be attached to the outside of the back plate 3.

In addition, the lower end of the vertical piece 5 may have a slightly pointed shape as shown in a chain line in order to facilitate insertion other than the solid line shape shown in the drawings.

The effects of the above embodiments will be explained below. Children tend to handle the flap when opening and closing the school bag, and due to the habits of right-handed and left-handed people, a large load is concentrated on the suture where the flap is located, causing the suture to tighten. In this device, the standing piece 5 of the reinforcing member is brought close to the suture thread 4 and inserted between the back plate 3 and the flap 2. Therefore, the suture thread should be strongly tightened from the beginning so that there is no room for the tightening to loosen, and the upper end of the back plate 3 should be fixed with the reinforcing member 1 to avoid distortion caused by opening and closing the flap cover. Since it is coated, curvature is completely prevented.

Therefore, as mentioned above, the combination of the function of preventing the upper end of the back plate from curving and maintaining the strong tightening of the suture thread worsens the tightening of the suture thread due to the concentrated load that occurs during the conventional flap opening/closing operation. There was nothing left to do.

This is a concrete phenomenon in which the flap is tilted along the center line in Figure 1, preventing the flap from drooping, and also by preventing the flap from sagging due to the inclination, and by preventing the flap from hanging due to the tilt. To prevent a school bag from becoming stiff and difficult to lock, and to surely obtain a school bag that has a good appearance for many years.

[Brief explanation of the drawing]

Figure 1 is a rear view of the main parts of the school bag of the present invention, Figure 2
The figure is a perspective view of the reinforcing member, and FIG. 3 is an enlarged sectional view taken along line A-A in FIG. 1. 1... Reinforcing member, 2... Hanging lid, 3... Back plate, 4... Suture thread.

Claims (1)

[Scope of utility model registration request] A reinforcing member 1 formed by integrally forming opposing vertical pieces and a top piece connecting the vertical pieces is fitted onto the upper end of the back plate, and the lower end of one of the vertical pieces hangs between the hanging lid 2 and the back plate. 3 is press-fitted between the two so as to be close to the overlapping seam part, and the other vertical piece is fixed at the overlapping part of the flap 2 and back plate 3.