JP2003289929A - Shoulder belt for backpack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide shoulder belts for a backpack which prevent a user from feeling a backpack heavy and which feels good by making the back of the backpack closely contact with the back of the user without deviation from the shoulders due to the weight of the backpack in the middle of using the backpack so as to prevent the centroid of the backpack moving away from the back of the user. <P>SOLUTION: Cores 2 made of elastic synthetic resin plates are inserted and held from fitting parts to the back 1a of the backpack 1 to parts along the shoulder of the user when the user has the backpack 1 on the back. The side of the distal ends 3a of belt main bodies 3 are directed downward and fitted to the upper end parts of the back part 1a of the backpack 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoulder strap for a backpack such as a school bag or rucksack.

[0002]

2. Description of the Related Art Conventionally, this kind of shoulder strap for a backpack is made of thick synthetic resin or leather so as not to bite and hurt when worn on the shoulder of the user. .

Particularly, a shoulder belt for a school bag is composed of an upper layer body made of thick leather and a lower layer body made by winding thin leather or synthetic resin material around a foamed synthetic resin body, which are superposed on each other. Both sides are sewn together.

[0004]

However, since the conventional shoulder strap for a backpack has the above-described structure, it is soft without tension, and when the user carries the backpack with the shoulder strap attached, the user can carry out the operation shown in FIG. As shown in
The shoulder belt 11 gradually shifts from the shoulder due to the weight of the backpack 12, and the backbag 12 is tilted rearward away from the user's back. Therefore, the center of gravity of the backpack 12 is separated from the user's back, and the backpack 12 is difficult to carry and feels heavy.

Further, in the conventional school bag equipped with the above-mentioned shoulder bag for a backpack, when the school bag body 13 is tilted rearward away from the user's back, as shown in FIG. There has been a problem that the lower end of the contact portion 13a hits the user's back, causing the user to feel pain or have a bad feeling in use.

[0006] Therefore, the present invention is to solve the above-mentioned conventional problems. During use of the backpack, the weight of the backpack does not displace from the shoulder, and the back of the backpack is in close contact with the user's back. The purpose of the present invention is to provide a shoulder strap for a backpack bag in which the center of gravity of the backpack bag does not separate from the user's back, does not feel heavy, and has a good usability.

[0007]

A shoulder strap for a backpack according to the present invention is elastically composited from a mounting portion of a backpack 1 to a back portion 1a to a portion along a user's shoulder when the backpack 1 is carried on the back. It is assumed that a core material 2 made of a resin plate is sandwiched and attached to the upper end of the back portion 1a of the backpack bag 1 with the tip 3a side of the belt body 3 facing downward.

In the shoulder strap for a backpack according to the present invention, the core member 2 has substantially the same width as that of the belt body 3 at a portion sandwiched by the belt body 3.

Further, in the shoulder strap for a backpack according to the present invention, when the user hangs the core belt 2 on the shoulder and the weight of the backpack 1 is applied to the shoulder belt, the core material 2 is worn along the shoulder. The elastic strength is such that it can bend.

Further, in the shoulder strap for a backpack according to the present invention, the belt body 3 is composed of the upper layer body 3a and the lower layer body 3b, and the upper layer body 3a and the lower layer body 3b.
The core material 2 is sandwiched between the upper layer body 3a, the core material 2 and the lower layer body 3b which are overlapped with each other.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the shoulder strap for a backpack according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a state in which the shoulder belt of the present invention is attached to the upper end of the back portion 1a of the backpack 1. The shoulder belt has a core material 2 made of an elastic synthetic resin plate sandwiched between a portion of the backpack 1 attached to the back 1a and a portion of the backpack 1 along the shoulder of the user when carrying the backpack 1 on his back. The shoulder belt is formed by directly riveting the belt main body 3 or by using an appropriate fixing metal fitting (not shown) with its tip T side facing downward (directly below or diagonally below). It is assumed to be attached to the upper end of 1a.

The core material 2 is usually about 10 to 20 cm, and it is preferable that the core material 2 has substantially the same width as that of the belt body 3 at a portion sandwiched by the belt body 3. The core material 2 has an elastic strength that allows the user to hang the shoulder strap on the shoulder and bend the shoulder strap along the shoulder when the weight of the backpack 1 is applied to the shoulder strap. Furthermore, rivets are attached to the tip of the core material 2,
A fastening hole 4 for fastening the belt body 3 to the backpack 1 is provided by an appropriate fixing metal fitting.

The belt body 3 is composed of an upper layer body 3a made of thick leather or synthetic resin material, and a lower layer body 3b made by winding thin leather or synthetic resin material on a foamed synthetic resin material. It is assumed that the core material 2 is sandwiched between 3a and the lower layer body 3b, and both side portions of the upper layer body 3a, the core material 2 and the lower layer body 3b which are overlapped are sewn together.

As shown in FIG. 1, the shoulder strap for a backpack according to the present invention having the above-described structure has the belt body 3 attached to the upper end of the back portion 1a of the backpack 1, as shown in FIG.
Is facing upward from the carrying bag 1. Therefore, when the user carries the backpack 1 on his back, as shown in FIG. 4, the backpack 1 is always pulled diagonally upward, and the belt body 3 is placed along the shoulder of the user. Turn. When carrying the backpack 1 in such a state, the back portion 1a of the backpack 1 is kept in close contact with the user's back.

Further, in the shoulder strap for a backpack according to the present invention, the upper layer 3a, the core member 2 and the lower layer member 3b are sewn on both sides so that the core member 2 can be sewn.
It does not move inside and does not protrude from the belt body 3,
The appearance is good, and the core material 2 can always maintain its function without being displaced from the shoulder position.

Further, the shoulder belt for carrying a backpack according to the present invention is designed so that the core material 2 is not exposed as the core material 2 is sandwiched between the upper layer body 3a and the lower layer body 3b. There is no such thing as a shoulder pain.

[0018]

EFFECTS OF THE INVENTION The shoulder strap for a backpack according to the present invention is
Since it is configured as described above, the weight of the backpack does not shift from the shoulder while the backpack is in use, the back of the backpack is in close contact with the user's back, and the center of gravity of the backpack is the user. I didn't get away from my back, I didn't feel heavy, and I felt good.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing a state in which a shoulder belt of the present invention is attached to an upper end of a back portion of a backpack bag.

FIG. 2 is a plan view showing a core member of the shoulder belt of the present invention.

FIG. 3 is a cross-sectional view of the shoulder belt of the present invention.

FIG. 4 is an explanatory view showing a state in which the backpack carrying the shoulder belt of the present invention is carried on the back.

FIG. 5 is an explanatory view showing a state in which a general backpack to which a conventional shoulder belt is attached is carried.

FIG. 6 is an explanatory diagram showing a state in which a school bag to which a conventional shoulder belt is attached is carried.

[Explanation of symbols]

1 carrying bag 1a back 2 core material 3 Belt body 3a Upper layer 3b Lower layer T tip

Claims (4)

[Claims] 1. A core material (2) made of an elastic synthetic resin plate is attached to a portion of the backpack (1) attached to the back part (1a) and along the shoulder of the user when carrying the backpack (1). ) Is sandwiched, and the belt body (3) is attached to the upper end of the back (1a) of the backpack (1) with the tip (T) side facing downward. Shoulder belt. 2. The shoulder bag for a backpack according to claim 1, wherein the core material (2) has a width substantially equal to that of the belt body (3) at a portion sandwiched by the belt body (3). belt. 3. The core material (2) has an elastic strength capable of bending along a shoulder when a user hangs a shoulder belt on the shoulder and the weight of the backpack (1) is applied to the shoulder belt. The shoulder strap for a backpack according to claim 1, wherein the shoulder strap is a shoulder strap. 4. The belt body (3) is attached to the upper layer body (3).
a) and the lower layer body (3b), and the core material (2) is provided between the upper layer body (3a) and the lower layer body (3b).
The shoulder strap for a backpack according to claim 1, wherein the upper layer body (3a), the core material (2), and the lower layer body (3b) sandwiching and sandwiching are sewn to both sides.