JPS6241611Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a back plate that comes into contact with the back of a bag carried on the back, such as a school bag or backpack.

Conventionally, this type of back plate has a flat plate shape and the entire back plate contacts the back, so it has the disadvantage that if you carry it on your back for a long time, you will get sweaty. And, for example, Jikko 54-
The idea of No. 11204 is said to have the effect of making it more comfortable to carry on the back because it has a recess in the center of the back plate.
Normally, the center of the back, that is, the area around the spine, is more concave than the sides, so the back plate only contacts the sides, and the part that makes contact with the back is extremely narrow, making it difficult to carry the back on your back. If the bag dances, it becomes unstable. In addition, in the school bag invented in Utility Model Application No. 55-3983, the back plate is made breathable to prevent stuffiness, but if used for a long time, the parts to which the cushion material is sewn If the material is cut along the edges, it may become misaligned or distorted, causing great discomfort during subsequent use.

The present invention was developed in view of these circumstances, and has excellent ventilation as the entire body does not come into contact with the back and there is a gap between the body and the back.Furthermore, it does not dance on the back and is stable. To provide a back plate of a backpack which is strong and does not cause pieces of cushioning material to come loose even when used for a long period of time, at low cost and in large quantities.

FIG. 1 is a front view of a back plate which is an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view thereof.

1 is a back plate main body, 2 is a substrate made of cardboard or the like covered with leather, 3 is a resilient cushioning material laminated on the surface of the substrate 2, and 4 is the cushioning material 3. This is a covering material made of leather, etc.

That is, the back plate 1 has a cushioning material 3 on the surface of the substrate 2.
are laminated, and the cushioning material 3 is covered with a surface material 4 to form a square shape in front.

Reference numeral 5 denotes a recess formed by sewing the surface material 4 and the substrate 2 together in a biased manner. Therefore, the recess 5
are formed diagonally across almost the entire back plate 1, and a convex portion 6 is surrounded by a concave portion 5 to form a diamond shape.

When the back plate 1 is used for a school bag or the like, it is preferable to fix the mounting member 8 of the shoulder strap 7 to the upper center of the back plate 1 as shown in FIG.

Note that the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways.

For example, as shown in FIG. 4, orthogonal recesses 5'...
may be formed vertically and horizontally, and rectangular protrusions 6' surrounded by the recesses 5' may be formed.

In the present invention, as described above, a cushioning material is laminated on the surface of a substrate, and the cushioning material is covered with a surface material, and the surface material and the substrate are sewn into a diamond shape or a rectangular shape to form a recess. Since the concave part is formed almost entirely on the back plate, only the convex part comes into contact with the back, and the concave part does not come into contact with the back, so even if you carry it on your back for a long time, you won't get sweaty and there is no space between you and your back. well-ventilated. In addition, the cushioning material is placed all over the body, and the convex part that comes into contact with the back is also formed over the whole area, so the whole area of the backboard comes into contact with the back, and the backpack will dance on your back even when you run. You can carry it on your back with good stability without any problems. Furthermore, since the surface material and the substrate are sewn together in a rhombic or rectangular shape, a strong and durable backboard can be manufactured, and it also has an excellent design.

The present invention has various excellent effects as described above.

[Brief explanation of the drawing]

FIG. 1 is a front view of a back plate which is an embodiment of the present invention.
FIG. 2 is a sectional view thereof, FIG. 3 is a perspective view of a school bag using the back plate, and FIG. 4 is a perspective view of a portion of a school bag using a modified back plate. 1... Back plate, 2... Board, 3... Cushioning material, 4...
...Surface material, 5, 5'...Concave portion, 6,6'...Convex portion,
7...Shoulder strap, 8...Mounting member.

Claims (1)

[Scope of utility model registration request] A cushioning material is laminated on the surface of the substrate, and the cushioning material is covered with a surface material, and a recess formed by sewing the surface material and the substrate in a rhombic or rectangular shape is formed on the backboard. A back plate of a backpack bag such as a school bag, characterized by being formed almost entirely.