JPS6342822Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a back protection plate suitable for use in backpacks such as school bags and backpacks.

(Prior art) As a conventional back guard plate of this type, there is one in which a cushioning material is interposed on both sides of the back guard plate body, a convex portion is formed, and a concave portion is formed in the vertical direction in the center of the body. A representative example thereof is disclosed in Japanese Utility Model Publication No. 11204/1983.

(Problems to be solved by the invention) In this conventional back guard plate, the main body of the back guard plate is flat and only has convex portions formed on both sides of the plate. It cannot cope with the difference in level between the shoulder blade and the part of the back directly below it, and when carried on the back, the backpack is extremely unstable, causing the backpack to dance on the back. In addition, since the convex portion is formed on both sides and the concave portion is formed between the convex portions,
Compared to a back guard that does not have any such recesses, the recesses do create a space between you and your back, which improves ventilation and prevents you from getting sweaty even if you carry it on your back for a long time. Although it has some effects, it still does not fully achieve its purpose.

Therefore, the main purpose of this invention is to adapt to the shape of a person's back, especially the difference in level between the shoulder blades, which are the most prominent part of the back, and the concave part of the back below, so that the person can carry them on their back with good stability. To provide a back guard plate which can form a larger space between the back guard plate and the back and improve ventilation.

(Means for solving the problem) In this invention, the support plate is recessed in the center to form a generally spherical crown shape as a whole, and vertical and horizontal cross-shaped recesses are formed through the most recessed part, and This is a back protection plate for a backpack in which a convex part is formed with a cushioning material interposed between the concave part.

(Function) Since the support member is recessed in the center and formed into a roughly spherical shape, the upper part of the back guard hits the upper part of the back, that is, the shoulder part, and the part of the shoulder blade that swells out the most in the back. It corresponds to the concave part of the support material, and the lower part of the back guard corresponds to the slightly concave part under the shoulder blade.

(Effect of the invention) The upper part of the back guard touches the shoulder, the recessed part of the support member touches the highest shoulder blade on the back, and the lowermost part of the back guard hits the shoulder blade slightly below the shoulder blade. The bag is shaped so that it touches the back part of the bag, and the overall shape is similar to the shape of the back, so when you carry it on your back, you won't get the feeling that the school bag will dance on your back, making it extremely stable to carry. I can do it.

Furthermore, since convex portions are formed at the four corners of the support material with a cushioning material in between, the elasticity of the cushioning material allows the back protector to fit into your back, making it possible to carry it on your back with even greater stability. can also be relieved.

Then, cross-shaped recesses are formed vertically and horizontally to pass through the recessed part of the support material, and together with the effect of the recess in the center of the support material as a whole, a space is created between the support material and the back, allowing ventilation. It feels better and my back doesn't sweat.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Example) Fig. 1 is a front view of the back plate of a school bag that is an embodiment of this invention, and Fig. 2 is a
It is an A-line sectional view.

The back plate 1 of this school bag includes a support member 3 having a generally spherical shape with a concave center, and the support member 3 is made of a paper material with excellent shape retention such as paperboard.

On the surface of the support member 3, convex portions 5a, 5b, 5c, and 5d are formed with cushioning materials 9 interposed at the four corners thereof so as to have a square shape when viewed as a whole.

A recess 7a is formed between the left and right protrusions 5a and 5b and between the protrusions 5c and 5d from the upper end to the lower end of the support member 3. A recess 7b is formed between 5b and 5d from the left end to the right end of the support member 3.

The recesses 7a and 7b intersect at the most recessed central portion of the support member 3, forming a substantially cross shape.

Note that the surfaces of the concave portions 7a, 7b of the support material 3 and the convex portions 5a, 5b, 5c, and 5d formed with the cushioning material 9 are coated with cloth made of synthetic fibers, leather materials such as synthetic leather, etc. A surface material 11 consisting of is polymerized to cover the entire surface.

Then, this surface material 11 is turned to the back side of the support material 3, and is attached to the peripheral edge of the support material 3, as shown in FIG. Furthermore, the surface material 11
The convex portions 5a, 5b, 5c, 5d and the concave portions 7a, 7
It is sewn together with the supporting material 3 at the boundary with b, and is also sewn together along the periphery of the supporting material 3.

Therefore, the cushioning material 9 is fixed at a predetermined position on the surface of the support material 3 without moving elsewhere.

In addition, as shown in FIG. 6, this back protection plate 1 is
Although attached to the main body of the school bag, a shoulder strap attachment part 13 is attached to the upper part of the recessed part 7a.

In addition, in FIGS. 4 and 6, 15 indicates a shoulder belt, and 17 indicates a school bag body.

Therefore, when the school bag main body 17 is carried on the back with the shoulder strap 15, a gap 19 is created between the shoulder strap 15 and the back of the person carrying the backpack (indicated by the imaginary line), as shown in FIGS. 2 and 4.

[Brief explanation of the drawing]

FIG. 1 is a front view of a back plate of a school bag which is an embodiment of the present invention. Figure 2 is Figure 1A-
It is an A-line sectional view. FIG. 3 is a plan view of the embodiment. FIG. 4 is a side view of the embodiment. FIG. 5 is a rear view of the embodiment. 6th
The figure is a perspective view showing how to use the embodiment. In the figure, 1 is a back guard plate, 3 is a support member, 5a,
5b, 5c, 5d are convex parts, 7a, 7b are concave parts, 9
11 is a cushioning material, 11 is a surface material, 13 is a shoulder strap attachment part, 15 is a shoulder strap, and 17 is a school bag body.

Claims (1)

[Claims for Utility Model Registration] 1. The supporting plate is recessed in the center to form an approximately spherical crown shape as a whole, and a vertical and horizontal cross-shaped recess is formed through the most recessed part, and the recess is sandwiched between the support plate. A back protection plate for a backpack with a convex portion formed with a cushioning material interposed therein. 2. The back guard plate for a backpack according to claim 1 of the utility model registration, in which a surface material is polymerized over the entire surface of the convex portions and concave portions.