JP3054037U - Shoulder belt - Google Patents

Abstract

(57) [Summary] [Purpose] A shoulder strap that has sufficient cushioning properties when carrying a bag, and suppresses "easy to dance" on the back of the bag even when carrying the bag and moving the body violently. I will provide a. [Structure] An outer band material 1 serving as a base material, a cushion band material 2 made of a foamed synthetic resin, and an inner flexible band material 3 are laminated in three layers, and between the cushion band material 2 and the inner flexible band material 3. Then, a shock absorbing material 4 made of a continuous foam synthetic resin made of polyurethane and having a slow shape recovery time is interposed in a portion that comes into contact with the shoulder portion when the body is worn. Then, the cushion band material 2 and the inner flexible band material 3 are stitched along the outer edge of the shock absorbing material 4.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a shoulder strap for carrying a bag such as a school bag or a rucksack.

[0002]

[Prior art]

 Since the backpack receives the heavy load of the bag, cushioning materials made of foamed synthetic resin such as polystyrene have recently been arranged to increase the load receiving area applied to the user's shoulder and to carry the bag while walking. Those that absorb shocks caused by vibrations of the air are widely used.

[0005] However, if the cushion made of a foamed synthetic resin material provided in the backpack is not thick, sufficient cushioning properties cannot be obtained and the above functions cannot be obtained. However, if the cushion is thickened to ensure sufficient cushioning properties, the cushioning material made of foamed synthetic resin is compressed and the shape recovery speed when releasing the compression force is high, so that the user can walk or run while carrying a bag. In some cases, the bag is called "dance of the bag", and the bag easily shakes on the back and the impact on the shoulder can be reduced.However, the impact force applied to the back is increased and the feeling of wearing is significantly reduced. It has.

[0004] That is, in the conventional backpack, the purpose of securing cushioning properties and the purpose of not inducing "dancing" of the bag are compromised, and the thickness is set, and both purposes cannot be achieved. In.

[0005]

[Problems to be solved by the invention]

 Therefore, the present invention has been made in view of the above-mentioned problems, and has sufficient cushioning properties when carrying a bag, and even if the body is moved violently while carrying the bag, the bag carrying the bag `` is easy to dance. The purpose of this is to provide a backpack that suppresses the above.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises three layers of an outer band 1 serving as a base material, a cushion band 2 made of a synthetic foamed resin, and an inner flexible band 3, and the inner flexible band 3 is provided. The edge of the cushion band 2 is formed as a two-folded portion 3a for sandwiching the edge of the cushion band 2. In the backing band for sewing the two-folded portion 3a to the outer band 1, the cushion band 2 and the inner flexible band are used. 3, a shock absorbing material 4 made of continuous foam synthetic resin and made of polyurethane having a slow recovery time is interposed at a portion which comes into contact with the shoulder portion when worn. Along with the above, technical means characterized in that the cushion band material 2 and the inner flexible band material 3 are stitched together.

Therefore, the back strap of the present invention has the cushion band 2 made of foamed synthetic resin and the shock absorbing material 4 made of polyurethane, so that the cushion band 2 made of foamed synthetic resin is used as a whole. It is the same as the conventional one that shows appropriate cushioning properties to fit the user's body.

[0008] The shock absorbing material 4 made of polyurethane replenishes cushioning properties, and when shock is received, the shock absorbing material mainly absorbs the shock by compressively deforming and absorbing the shock. Has the effect of suppressing "dancing".

Next, the invention of claim 2 is that the outer band material 1 serving as a base material, the cushion band material 2 made of a foamed synthetic resin, and the inner flexible band material 3 are laminated three times, The edge portion of the flexible band material 3 is formed as a two-folded portion 3a sandwiching the edge portion of the cushion band material 2. In the backing band for sewing this two-folded portion 3a to the outer band material 1, the cushion band material 2 and the inner side are formed. A shock absorbing material 4 made of polyester, which is made of a continuous foam synthetic resin and is excellent in vibration isolation, is interposed between the flexible band cloth 3 and a portion which comes into contact with the shoulder portion when worn. A technical measure characterized in that the cushion band material 2 and the inner flexible band material 3 are stitched along the outer edge of the material 4.

[0010] The above-mentioned continuous foamed polyurethane is particularly excellent in vibration damping properties (hysteresis property), and does not instantaneously push back the impact and deforms the impact as in a normal independent foam of polystyrene. This has the function of absorbing vibration while suppressing vibration.

[0011]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described in detail based on an attached example of a lanyard carrying band attached. In the figure, reference numeral 1 denotes an outer band material serving as a base material. As shown in FIG. 1, the outer band material 1 is formed in a conventionally known long band shape. In the present embodiment, the outer band fabric 1 is made of natural leather or synthetic leather, but may be made of other materials.

In FIG. 1, reference numeral 2 denotes a cushion band 2 made of a foamed synthetic resin. The cushion band 2 is made of a polystyrene foam material or the like, and a foam sheet having a predetermined thickness is formed in substantially the same shape as the outer band cloth 1. It is the same as before that the cut one is used. It is to be noted that the cushion band 2 may be formed in a band shape by arranging a plurality of cushion bands instead of a series, and the cushion band material 2 may be formed on the upper part of the outer band cloth 1 shown in FIG. 1 and FIG. It is acceptable to use a shape that is compatible only with the lower half of the figure omitted.

In the figure, reference numeral 3 denotes an inner flexible band material, and the inner flexible band material 3 is made of soft natural leather, soft synthetic leather, cloth, or the like, and is configured to be slightly larger than the outer band material 1 and the cushion band material 2. I have.

In the illustrated example, the inner flexible band material 3 does not have a shape suitable for only the upper part of “FIG. 1” and “FIG. 2” of the outer band material 1 like the cushion band material 2 described above. A lower inner fabric 5 is used at the lower portion of the outer band fabric 1 using a shape in which the lower half of the figure is omitted. It goes without saying that a material in which the band material 3 reaches the lower end of the outer band material 1 may be used.

[0015] The outer band 1, the cushion band 2 made of foamed synthetic resin, and the inner soft band 3 are overlapped with each other, and the edge of the inner band 3 is the cushion band 2. The folded portion 3a (see FIG. 3) sandwiching the edge of the outer band fabric 3 is sewn (sewn with the sewing thread 7a) to the outer band material 1 as in the conventional case. It is.

According to the present invention, between the cushion band material 2 and the inner flexible band material 3, a portion of the polyurethane foam made of a continuous foam synthetic resin made of polyurethane is slow at a portion which comes into contact with the shoulder portion when worn. The shock absorber 4 is interposed.

As the shock absorbing material 4, polyurethane foam having a density of about 0.1 g / cm ³ or the like can be used. The foam is made of a continuous foam synthetic resin, so that it is breathable and sweats even when it comes into contact with the body. Not only is it difficult, but it can also slow down the shape recovery after being compressed, absorb shocks by compressive deformation, and gradually recover the shape so that no vibration occurs. You can do it. It is desirable that the bubbles of the shock absorbing material 4 be small.

In the present invention, the shock absorbing material 4 is made of a continuous foam synthetic resin having excellent vibration damping properties and made of polyester. Specifically, the US E. A. R. A memory foam (trade name) manufactured by EAR SPECIALITY COMPOSITES CORP (thickness: 10 mm) was used. This shock-absorbing material 4 was compressed to 80% for 2 hours and then released when the compressive force was released. It took 2 minutes for recovery, and was extremely excellent in vibration proof (hysteresis), and was soft and easily fitted to the shoulder.

In the present invention, the cushion band 2 and the inner flexible band 3 are sewn along the outer edge of the shock absorber 4. This suturing is performed prior to the step of sewing the two-folded portion 3a to the outer band material 1, and the cushion band 2 and the inner flexible band are surrounded by surrounding the shock absorbing material 4 with the sewing thread 7b. What is necessary is just to suture with the cloth 3.

The sewing with the sewing thread 7b is not limited to the cushion band material 2 and the inner flexible band material 3, but the outer band material 1 may be sewn together. In this case, the seam of the sewing thread 7b is It will be exposed on the surface of the band cloth 1.

In addition, the shoulder strap of the school bag shown in FIG. 1 folds the upper end portion of FIG. 1 inward to the back side, and the folding part wraps around one side of a mounting ring provided at the center of the upper part of the back plate of the school bag not shown. The two-folded portion is attached by stitching or stitching. At the lower free end side of this shoulder strap, locking holes 6a, 6b, 6c... Are opened, and a buckle is provided at the free end of the mating belt having one end attached to the lower end of the school bag. It is designed to be locked and, of course, a symmetrical pair is used.

[0022]

[Effect of the invention]

 According to the present invention, as described above, the shock absorbing material 4 is interposed between the cushion band material 2 and the inner flexible band material 3, so that the cushioning of the shock absorbing material 4 is added to the cushion of the cushion band material 2. It has a large cushioning property, and can be fitted to the shoulder when carrying, so as to provide a comfortable carrying band.

The shock absorbing material 4 not only has cushioning properties but also has functions of cushioning and vibration proof by being deformed, so that the vibration of the carrying bag "dancing" in the back is minimized. It is possible to provide a backpack with a better wearing feeling.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a rear view.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer band material 2 Cushion band material 3 Inner flexible band material 3a Folded part 4 Shock absorber

Claims (2)

[Utility model registration claims] 1. An outer band fabric (1) serving as a substrate, a cushion band material (2) made of a foamed synthetic resin, and an inner flexible band material (3) are laminated in three layers, and the inner flexible band material (3) is laminated. The edge of 3) is a two-folded portion (3a) sandwiching the edge of the cushion band material (2), and the two-folded portion (3a) is sewn to the outer band fabric (1). Between the cushion band material (2) and the inner flexible band material (3), a portion of the shock absorbing material made of polyurethane continuous synthetic resin made of polyurethane and having a slow shape recovery time is provided at a portion that comes into contact with the shoulder portion when worn. And a cushion band (2) and an inner flexible band (3) stitched along the outer edge of the shock absorbing material (4). 2. An outer band fabric (1) serving as a base material, a cushion band material (2) made of a foamed synthetic resin, and an inner flexible band material (3) are laminated in three layers, and the inner flexible band material (3) is laminated. The edge of 3) is a two-folded portion (3a) sandwiching the edge of the cushion band material (2), and the two-folded portion (3a) is sewn to the outer band fabric (1). Between the cushion band material (2) and the inner flexible band material (3), a shock absorbing material made of a continuous foam synthetic resin excellent in vibration isolation using polyester as a raw material, at a portion which comes into contact with a shoulder portion when worn. (4) A backpack band comprising the cushion band material (2) and the inner flexible band material (3) sewn along the outer edge of the shock absorbing material (4).