JPH0634511U - Shoulder bag - Google Patents

Abstract

(57) [Abstract] [Purpose] Providing a backpack bag such as a school bag A that can protect the contents of the bag and the user from vibration and impact [Structure] Foaming of open cells having adhesive elasticity to the back support 1. Insert the foam sheet 7a consisting of the body, and shoulder strap 5
A structure of a school bag A in which a thin foam sheet 15 made of an open-cell foam is inserted. [Effect] Vibration and shock are smoothly absorbed by the foam sheets 7a and 15 having adhesive elasticity, and the school bag A
Since the vibration of is suppressed, the contents and the shoulder and back of the user are protected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a backpack bag, and more particularly to a backpack bag made of a material having relatively high rigidity for storing documents and books such as school bags.

[0002]

[Prior art]

 Generally, backpacks such as school bags use a particle board, a plywood board or a base board such as cardboard for the back support to protect documents, and a sponge or a sponge is used to give a soft feel to the back. Cushion material such as felt is layered on top of which a flexible cover sheet such as natural or synthetic leather is placed.

Furthermore, in recent years, in order to sufficiently protect the spine of children such as elementary school children, especially the lumbar region, a lateral ridge filled with a cushioning material such as urethane foam is provided inside the back support body. Alternatively, vertical ridges are provided on the side of the back support. It is also known to fill a cushioning material inside the shoulder belt of the school bag.

[0004]

[Problems to be solved by the device]

 The cushion material imitates the uneven shape of the back so that a large force is not locally applied, and a soft feeling can be given. However, when the user runs out, the school bag shakes up and down and hits the back violently, causing a big shock, but such a shock cannot be softened sufficiently. As a result, the pencil lead in the school bag may break or cause back pain.

When the bumps filled with the cushioning material are provided, the volume of the school bag becomes high, the shape and appearance of the bag become uncomfortable, and the weight becomes heavy. In addition, as the body grows, there is a problem that the arrangement of the ridges does not match the irregularities in the back. On the other hand, when the inside of the shoulder belt is filled with a cushioning material, the flatness of the inner surface side of the belt is impaired, and the belt is hung from the shoulder to the flank, and there is a problem that it does not fit well.

An object of the present invention is to further enhance the shock absorbing action without significantly changing the shape or appearance of the conventional school bag or the like and maintaining the flatness of the belt.

[0007]

[Means for Solving the Problems]

 2. The backpack body according to claim 1, wherein the backing body is a base board, at least one foam sheet made of open-cell foam material having adhesive elasticity, and a flexible cover sheet covering the foam board. It is composed of and. The above-mentioned foamed sheet having adhesive elasticity can be used alone, but it is preferable to use it by laminating it with at least one foamed sheet having ordinary elasticity.

According to a third aspect of the present invention, in the shoulder bag, the shoulder belt is composed of a base material, a foam sheet having a band-like adhesive elasticity and being laminated on the inside thereof, and a flexible cover sheet covering the base material. I am trying.

The “adhesive elasticity” refers to an elastic property that behaves as if there is internal friction (viscous resistance). Specifically, the deformation resistance is directly proportional to the amount of deformation. Not shown, but rather an elastic property that depends on the deformation rate, and that the larger the deformation rate, the greater the deformation resistance. Therefore, if it is deformed slowly, it deforms with a comparatively small pressing force, and once deformed, it does not generate so much repulsive force even if the amount of deformation is large. And, regardless of the presence or absence of deformation, when it receives a shocking force, it exhibits extremely large deformation resistance. When the pressing force is removed from the deformed state, it slowly returns to its original shape.

[0010]

[Action]

 When the carrying bag according to claim 1 is carried on the back, the foamed sheet showing adhesive elasticity is deformed in accordance with the uneven shape of the back and fits on the back. However, since there is almost no elastic repulsion due to the deformation, the backpack bag will be firmly attached to the back. When an impact force is applied in that state, it further deforms locally while absorbing impact energy. When the impact force is no longer applied and it settles down, it slowly returns to the uneven shape it had when it was originally worn. In addition, since it is an open-cell foam material, it has high air permeability, so it will not get damp due to sweat, etc., even though the backing plate is in close contact with the back.

In the backpack bag according to claim 2, since the first foam sheet having adhesive elasticity and the second foam sheet (sponge sheet) having normal elasticity are laminated and used, a soft wearing feeling is obtained. And high shock absorption function at the same time. Also, the high frequency component of the vibration of the backpack is smoothly absorbed by the normal second foam sheet, and the low frequency component is absorbed by the first foam sheet having adhesive elasticity. In this way, the two types of foam sheets work together to provide an excellent vibration absorbing effect.

In the backpack bag according to the third aspect, since the shoulder belt is provided with the foamed sheet having adhesive elasticity, the shock is relieved when the backpack bag shakes greatly, and the burden on the user is reduced. Further, in the backpack bag including both the backing plate according to claim 1 and the shoulder belt according to claim 3, since the shock is absorbed even when the bag swings in any direction, there is an advantage that the vibration suppressing effect is further enhanced. .

[0013]

【Example】

 An embodiment of the carrying bag of the present invention will be described below with reference to the drawings. In the following embodiments, a school bag will be described as a representative, but the present invention is not limited to these embodiments, and can be applied to a backpack-type document bag other than the school bag, with the same effect. Play. FIG. 1 is a partially cutaway perspective view showing an embodiment of a school bag according to the present invention, and FIGS. 2 and 3 are sectional views showing embodiments of a back support and a shoulder belt according to the present invention, respectively.

The school bag A of FIG. 1 includes a back support body 1, a side gusset portion 2 provided at the rear portion thereof, a back portion 3 provided at the rear portion thereof, a cover lid 4, and two shoulder belts 5. It is composed of The back support 1 is composed of a base board 6, about 2 to 5 foamed sheets 7 (7a, 7b) stacked on the base board 6, and a cover sheet 8 covering the surface thereof. The periphery of the cover sheet 8 is covered with a presser foot 9 and sewn to the base board 6 with threads. Further, the foam sheet 7 is not inserted in the upper part of the back support body 1, and the top board material 11 for fixing the metal fitting 10 for stopping the shoulder belt 5 is laid on the cover sheet 8 so as to be a base board. Sewn on 6.

The base board 6 may be a conventionally known one such as a cardboard which is impregnated with a synthetic resin and is compressed, and the cover sheet 8, the presser foot 9, the additional material 11 and the like, which are conventional, such as natural or Synthetic leather or the like may be used. 1 to 4 of the foamed sheets 7 are sheets 7a obtained by slicing a foam having adhesive elasticity into a thickness of about 3 to 20 mm, preferably about 5 mm, and the remaining foamed sheets 7b have normal elasticity. The obtained foam is sliced into the same thickness. As the foam having cohesive elasticity, regardless of the material such as synthetic resin or rubber, the foam itself and the communication holes between the foams are made extremely small (for example, a diameter of 5 to 1000 μm, particularly about 50 to 500 μm). ) Various forms such as those with increased air flow resistance, those with adhesiveness to the material itself, those with ordinary foams impregnated or adhered with adhesive material, and those with combinations thereof are used. Things are included.

As the foam having such adhesive elasticity, a type T-47, T of “Temper Foam” which is a resin foam for shock absorption manufactured and sold by Dynamic Systems, Inc. of the United States. -41, T-38, T-36, and the like, or those having equivalent performance to these, are particularly preferable representative examples. These have high shock / vibration absorption / diffusion performance, high breathability and heat absorption, and high moisture absorption / breathability, so even though they fit on the back, they do not get stuffy when sweating on the back. It has the effect of preventing dirt from sweat. Further, since it is lightweight (specific gravity 0.1), there is an advantage that the burden on the user is light.

As the foamed sheet 7a having adhesive elasticity, it is possible to use only one sheet having a thickness of about 10 to 20 mm, but as shown in FIG. 2, a sheet having a thickness of about 3 to 5 mm is used as 3 to 5 sheets. It is preferable to adjust the shock absorbing action by stacking the sheets. Further, by forming such a thin sheet, it can be used in common with the foamed sheet 15 having adhesive elasticity to be put into the shoulder belt 5 which will be described later. Note that since the foamed sheets are sticky, they do not shift from each other.

Although the foamed sheet may be composed entirely of the foamed sheet 7a having adhesive elasticity, the foamed sheet 7a having adhesive elasticity thinned as described above and the normal foamed sheet 7b having the same thickness as described above. It is preferable to stack the layers so that a soft wearing feeling and a high shock absorbing function can be simultaneously exhibited. The high-frequency component of the vibration of the school bag A is smoothly absorbed by the normal foam sheet 7b, and the low-frequency component is absorbed by the foam sheet 7b having adhesive elasticity. In this way, the two types of foam sheets 7a and 7b cooperate to exert an excellent vibration absorbing action. As the ordinary foamed sheet 7b, for example, an open-celled synthetic resin foamed material such as polystyrene or polypropylene, which has been conventionally used as a cushion material, may be slit into a thickness of about 3 to 5 mm.

As shown in FIG. 3, the shoulder belt 5 of the school bag of FIG. 1 has a thickness of about 3 to 5 mm between a natural or synthetic leather outer material (base material) 13 and a flexible lining (cover sheet) 14. The foamed sheet 15 having the adhesive elasticity is intervened. The foam sheet 15 having the adhesive elasticity used here is the same as the foam sheet 7a having the adhesive elasticity used for the backing body 1, and is different only in length, width and shape. Therefore, it is possible to standardize parts.

Since such a shoulder belt 5 receives the weight of the entire school bag applied to the shoulder of the user, a large impact force is repeatedly applied when the user runs. In that case, the foamed sheet 15 having adhesive elasticity absorbs impact and is dispersed in a wide range of the belt, so that the burden on the user is reduced.

[0021]

[Effect of device]

 The backpack body of the present invention, in which an adhesive and elastic foam sheet is inserted into the backrest body, fits the user's back and also moderates the vibration of the backpack bag and the impact force resulting from the backpack body, so that it is comfortable to wear. In addition, the backpack bag in which the adhesive elastic foam sheet is inserted into the shoulder belt disperses the weight on the shoulder and absorbs the impact significantly, thus reducing the burden on the user.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a school bag according to the present invention.

FIG. 2 is a sectional view showing an embodiment of a back support body according to the present invention.

FIG. 3 is a sectional view showing an embodiment of a shoulder strap according to the present invention.

[Explanation of symbols]

 A school bag 1 back support 6 base board 7 foam sheet 7a foam sheet with adhesive elasticity 7b foam sheet with ordinary elasticity 8 cover sheet 13 outer surface 14 lining 15 foam sheet

Claims (3)

[Scope of utility model registration request] 1. A backing body is composed of a base board, at least one foamed sheet made of open-celled foam material having adhesive elasticity, and a flexible cover sheet covering the base board. A carrying bag. 2. A backing body, a base board, a first foamed sheet made of at least one open-celled foam material having adhesive elasticity, and a first foamed sheet laminated on the base board. A backpack bag composed of a second elastic foam sheet and a flexible cover sheet covering the second foam sheet. 3. A shoulder bag comprising a shoulder belt comprising a base material, a foamed sheet made of a foam material of continuous cells having adhesive cohesive elasticity, which is laid over the base material, and a flexible cover sheet covering the base material. .