Shoulder belt unit for backpack

Abstract

To enable a backpack to be easily shouldered and also to prevent shoulder belts from slipping-down.SOLUTION: A shoulder belt unit includes: a pair of right and left shoulder belts 11R, 11L curved to meet shapes of shoulders of a user; a pair of right and left angle adjustment components 12R, 12L respectively arranged in lower end parts of the pair of shoulder belts 11R, 11L; and a base component 13 arranged in the lower end parts of the pair of right and left angle adjustment components 12R, 12L so as to be fixed to an upper part of a backpack body 1. The pair of right and left angle adjustment components 12R, 12L supports the pair of shoulder belts 11R, 11L so as to be fixable in multiple stages in a posture inclined at a predetermined angle in a front and rear direction. The base component 13 support the pair of right and left angle adjustment components 12R, 12L so as to be inclinable at a predetermined angle in a horizontal direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a shoulder belt unit for a backpack that is hung on a user's shoulder when carrying the backpack.

Background Art

[0002] Conventionally, backpacks have been widely used for carrying items such as during mountain climbing, hiking, or commuting to school or work. Usually, this type of backpack is provided with a backpack body having an internal storage space, and a pair of left and right shoulder belts attached to the upper and lower parts of the backpack body by sewing or the like. Usually, the shoulder belts are made of cloth or leather materials (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional backpacks as described above, since the shoulder belts are attached to the upper and lower parts of the backpack body and pass under the armpits when carrying the backpack, there is a problem that the shoulder belts are likely to slip off the shoulders. In addition, when carrying the backpack, the shoulder belts may be twisted, making it difficult to carry the backpack.

[0005] The present invention has been made to solve the above problems, and an object thereof is to provide a shoulder belt unit for a backpack that can make it easier to carry the backpack and is less likely to slip off the shoulders after carrying the backpack.

Means for Solving the Problems

[0006] To achieve the above object, the present invention includes a pair of left and right shoulder belts curved in an arch shape along the shape of the shoulders of a user carrying a backpack, a pair of left and right angle adjustment components respectively provided at the lower ends of the pair of left and right shoulder belts, and a base component provided at the lower ends of the pair of left and right angle adjustment components and fixed to the upper part of the backpack body. The pair of left and right angle adjustment components support the pair of left and right shoulder belts so that they can be fixed in multiple stages in a posture inclined at a predetermined angle in the front-rear direction, and the base component supports the pair of left and right angle adjustment components so that they can be inclined at a predetermined angle in the left-right direction.

[0007] In the shoulder belt unit for a backpack according to the present invention, it is preferable that the shoulder belt is formed by folding back a wire made of metal at the tip side.

[0008] In the shoulder belt unit for a backpack according to the present invention, it is preferable that the shoulder belt is rotatably provided outside with respect to the angle adjustment component.

Advantages of the Invention

[0009] According to the present invention, it is possible to make it easier to carry a backpack, and various excellent effects can be obtained, such as the shoulder belt being difficult to slip off the shoulder after carrying the backpack.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

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Figure 11

Figure 12

Embodiments for Carrying out the Invention

[0011] Hereinafter, with reference to the drawings, a shoulder belt unit 10 for a backpack according to an embodiment of the present invention will be described.

[0012] The shoulder belt unit 10 for a backpack according to an embodiment of the present invention includes a pair of left and right shoulder belts 11L and 11R that are bent, for example, in an arch shape so as to conform to the shape of the shoulders of a user carrying the backpack, a pair of left and right angle adjustment parts 12L and 12R provided at the lower ends of the pair of left and right shoulder belts 11L and 11R respectively, and a base part 13 provided at the lower ends of the pair of left and right angle adjustment parts 12L and 12R. The base part 13 is configured to be detachable from the upper part of the backpack body 1.

[0013] The shoulder belts 11L and 11R are formed by folding back a metal wire having elasticity like a spring at the tip side so that two metal wires are parallel. The metal wires of the shoulder belts 11L and 11R are preferably manufactured by wire forming a stainless steel wire rod having a diameter of about 2.5 to 3.5 mm. In addition, narrow fixing parts 14L and 14R formed of two metal wires are formed in parallel on the lower end sides of the shoulder belts 11L and 11R, and the lower end parts 15L and 15R of the fixing parts 14L and 14R are bent inward at right angles respectively. Note that the shoulder belts 11L and 11R may be formed of other materials, such as being constituted by a metal plate having elasticity like a spring, instead of the metal wire.

[0014] As shown well in FIGS. 6 and 7, a pair of left and right angle adjustment parts 12L and 12R each have upper pipes 16L and 16R and lower pipes 17L and 17R which are made of metal and have a cylindrical shape. With the shaft parts 34L and 34R formed at the upper ends of the lower pipes 17L and 17R as fulcrums, the upper pipes 16L and 16R are provided so as to be rotatable from a vertical posture backward and fixable in multiple stages (for example, 10 to 20 stages) in a posture inclined at a predetermined angle (for example, 0 to 90°). For the angle adjustment parts 12L and 12R, for example, a fine gear (product number: KS-12AT) for a headrest manufactured by Koyo Giken Co., Ltd. may be used. Since the angle adjustment parts 12L and 12R are made of metal, they will not be damaged by the load of the luggage stored in the backpack body 1. Also, since the angle adjustment parts 12L and 12R use commercially available products that are mass-produced and have a low unit price, the manufacturing cost can be suppressed.

[0015] As shown in FIG. 6, round holes 18L and 18R of about 5 mm are respectively drilled in the upper front parts of the upper pipes 16L and 16R. Inside the upper pipes 16L and 16R, a clip 20 having a V-shaped elasticity is inserted from above. The clip 20 is detachable from the upper pipes 16L and 16R, and is fixed to the upper pipes 16L and 16R by the protrusion 21 protruding outward from the round holes 18L and 18R. Also, as shown well in FIG. 7, round holes 19L and 19R of about 5 mm are respectively drilled in the lower rear parts of the lower pipes 17L and 17R. Inside the lower pipes 17L and 17R, a clip 20 having a V-shaped elasticity is inserted from below. The clip 20 is detachable from the lower pipes 17L and 17R, and is fixed to the lower pipes 17L and 17R by the protrusion 21 protruding outward from the round holes 19L and 19R.

[0016] As shown in FIGS. 1, 2, and 4, a cylindrical connection pipe 22 is interposed between the shoulder belts 11L, 11R and the upper pipes 16L, 16R of the angle adjustment parts 12L, 12R. Round holes 23 (see FIG. 4 etc.) are formed in the peripheral wall of the connection pipe 22 at positions corresponding to each other on the left and right side parts. By inserting the lower ends 15L, 15R of the shoulder belts 11L, 11R into the left and right round holes 23 of the connection pipe 22 and welding the fixing parts 14L, 14R to the outer peripheral surface of the connection pipe 22, the connection pipe 22 is fixed to the shoulder belts 11L, 11R.

[0017] Further, horizontal long holes 24 are formed in the peripheral wall of the connection pipe 22 below the left and right round holes 23, and the horizontal long holes 24 are formed in an arc shape with a central angle of 180°. Protrusion parts 21 of clips 20 inserted into the upper pipes 16L, 16R and protruding outward from round holes 18L, 18R are engaged with the horizontal long holes 24 (see FIGS. 3, 5, and 10). Thereby, the connection pipe 22 is attached to the upper pipes 16L, 16R of the angle adjustment parts 12L, 12R so as to be rotatable by 180°, and can be attached and detached to and from the upper pipes 16L, 16R by pushing in the protrusion parts 21.

[0018] As shown well in FIG. 2, the base part 13 includes a metal base plate 25, a pair of left and right convex fittings 26L, 26R for fixing the lower pipes 17L, 17R of the pair of left and right angle adjustment parts 12L, 12R to the base plate 25 respectively, and a synthetic resin base cover 27 for covering the convex fittings 26L, 26R etc. The base cover 27 may be manufactured from the same material (for example, fiber fabric) as the backpack body 1.

[0019] As shown well in FIG. 8, the base plate 25 is formed with a plurality (five in the drawing) of round holes 28 in the outer peripheral part, and a total of four curved holes 29L, 29L, 29R, 29R formed in an arcuate shape so as to face each other left and right.

[0020] As shown in FIGS. 2 and 9, the convex fittings 26L and 26R are respectively composed of legs 30L, 30L, 30R, 30R provided to correspond to the curved holes 29L, 29L, 29R, 29R of the base plate 25, and convex portions 31L, 31R formed to cover the lower pipes 17L, 17R of the angle adjustment parts 12L, 12R. Further, as shown well in FIG. 4, on the inner surface side of the convex portions 31L, 31R, a rubber with seal 32 is disposed to fill the gap between the lower pipes 17L, 17R of the angle adjustment parts 12L, 12R and the convex portions 31L, 31R so that the lower pipes 17L, 17 do not move. Round holes 33 into which the protrusions 21 of the clip 20 can be engaged are formed in the convex portions 31L, 31R.

[0021] With the lower pipes 17L, 17R of the angle adjustment parts 12L, 12R covered by the convex portions 31L, 31R and the rubber with seal 32, the legs 30L, 30L, 30R, 30R are respectively attached to the curved holes 29L, 29L, 29R, 29R of the base plate 25 via hollow rivets 35 (see FIG. 9) or the like. Thus, the lower pipes 17L, 17R of the angle adjustment parts 12L, 12R are attached to the base plate 25 so as to be slidable along the curved holes 29L, 29L, 29R, 29R, and the pair of left and right angle adjustment parts 12L, 12R can be inclined 30° to the left and right with respect to the base plate 25 respectively.

[0022] As shown in FIGS. 1 and 2, round holes 33 are formed in the base cover 27 at positions corresponding to the round holes 28 of the base plate 25. Then, by fixing the base plate 25 and the base cover 27 to the upper part of the backpack body 1 with rivets or the like through these round holes 28 and 33, the shoulder belt unit 10 can be attached to the backpack body 1 as shown in FIGS. 11 and 12.

[0023] When the user carries the backpack body 1 with the shoulder belt unit 10 configured as described above on the shoulder, the curved portions of the left and right shoulder belts 11L and 11R are respectively placed on the left and right shoulders of the user. At this time, since each of the shoulder belts 11L and 11R is curved, for example, in an arch shape along the shape of the user's shoulder, the backpack body 1 can be held only by the user's both shoulders, and the backpack body 1 will not slip off the shoulders. Also, when carrying the backpack, since the shoulder belts 11L and 11R will not be twisted, it is easy to carry the backpack body 1. Further, in the case of having pain such as frozen shoulder or periarthritis of shoulder, it is difficult to carry a conventional backpack, but for a backpack equipped with the shoulder belts 11L and 11R of the present invention, it can be easily carried with the shoulder belts 11L and 11R.

[0024] Also, the shoulder belts 11L and 11R are rotatably provided from a vertical posture to the rear direction via the angle adjustment parts 12L and 12R, and can be fixed in multiple stages (for example, 10 to 20 stages) in a posture inclined at a predetermined angle (for example, 0 to 90°). Therefore, the shoulder belts 11L and 11R can fit the shoulders, the backpack body 1 can be surely held by the user's shoulders, the holding property to the user's body is enhanced, and the backpack body 1 will not slip off.

[0025] Also, since the shoulder belts 11L and 11R are formed of a metal wire having elasticity like a spring, even if the user wears multiple layers of clothes, the arch-shaped portions of the shoulder belts 11L and 11R will expand and fit the user's body. Further, since the arch shape can be easily expanded by applying force to the shoulder belts 11L and 11R, the shoulder belts 11L and 11R can be fitted to the user's body regardless of the user's physique.

[0026] Furthermore, since the shoulder belts 11L and 11R are rotatably provided outwardly with respect to the angle adjustment parts 12L and 12R respectively, it is also possible to easily remove the backpack carried by the user from the body.

[0027] Moreover, by unitizing components such as the pair of left and right shoulder belts 11L and 11R as described above, it can be easily attached to the backpack body 1. Therefore, the shoulder belt unit 10 can also be sold alone to a backpack manufacturer or the like, and it becomes easier for backpacks adopting the shoulder belt unit 10 to spread in society.

[0028] Furthermore, as shown in FIGS. 11 and 12, by covering the shoulder belts 11L and 11R with the detachable covers 40 with built-in cushions, it is also possible to reduce the burden on the shoulders of the user carrying the backpack. Also, by creating designed covers and covers of several color variations, it is possible to enjoy backpacks of various designs and colors.

[0029] Also, the weight of the shoulder belt unit 10 of the present invention is about 350 g even including all the above-described components. Therefore, the weight of the entire backpack with the shoulder belt unit 10 attached can be suppressed to about 1 kg, which is the weight of an average backpack. Therefore, a backpack adopting the shoulder belt unit 10 of the present invention does not feel heavier than a general conventional backpack.

[0030] In the description of the above embodiments of the present invention, since preferred embodiments of the shoulder belt unit 10 for a backpack according to the present invention are described, various technically preferable limitations may be imposed. However, the technical scope of the present invention is not limited to these aspects unless there is a description specifically limiting the present invention. That is, the components in the above-described embodiments of the present invention can be appropriately replaced with existing components, etc., and various variations including combinations with other existing components are possible. The description of the above-described embodiments of the present invention does not limit the content of the invention described in the claims.

Explanation of Reference Numerals

[0031] 1 Backpack body 10 Shoulder belt unit 10 for backpack 11L, 11R Shoulder belts 12L, 12R Angle adjustment parts 13 Base part

Claims

1. A pair of left and right shoulder belts curved along the shape of the shoulders of a user carrying a backpack, A pair of left and right angle adjustment parts respectively provided at the lower ends of the pair of left and right shoulder belts, A base part provided at the lower ends of the pair of left and right angle adjustment parts and fixed to the upper part of the backpack body, Comprising, The pair of left and right angle adjustment parts support the pair of left and right shoulder belts so that they can be fixed in multiple stages in a posture inclined at a predetermined angle in the front-rear direction, The base part is characterized in that it supports the pair of left and right angle adjustment parts so that they can be inclined at a predetermined angle in the left-right direction. A shoulder belt unit for a backpack.

2. The shoulder belt unit for a backpack according to claim 1, wherein the shoulder belt is formed by folding back a metal wire at the tip side.

3. The shoulder belt unit for a backpack according to claim 1, wherein the shoulder belt is rotatably provided outside the angle adjustment part.

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