Shoulder belt and bag

Abstract

To provide a shoulder belt which can reduce the load applied on a shoulder irrespective of the shape of the shoulder, and a bag including the shoulder belt.SOLUTION: A shoulder belt 2a is connected to a bag 1. The shoulder belt 2a includes a body part 21 and a plurality of elastic parts 22. The plurality of elastic parts 22 connect one end 21a of the body part 21 and the bag 1. The plurality of elastic parts 22 extend in directions different from each other.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a shoulder belt and a bag. [Background technology]

[0002] Japanese Patent Publication No. 2021-186188 (Patent Document 1) discloses a shoulder belt that reduces the load on the shoulders, regardless of changes in the shape of the wearer's shoulders, such as when raising and lowering the shoulders. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-186188 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the shape of the shoulders varies from wearer to wearer, so there is room for improvement in reducing the load on the shoulders regardless of the shape of the shoulders of the wearer.

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a shoulder belt that can reduce the load on the shoulder regardless of the shape of the shoulder, and a bag equipped with such a shoulder belt. [Means for solving the problem]

[0006] A shoulder belt according to the present disclosure is connected to a bag body. The shoulder belt includes a main body portion and a plurality of elastic portions. The plurality of elastic portions connect one end of the main body portion to the bag body. The plurality of elastic portions extend in different directions from each other.

[0007] A bag according to the present disclosure includes a bag body and the above-described shoulder belt. [Effects of the Invention]

[0008] According to the above, it is possible to obtain a shoulder belt that can reduce the load applied to the shoulder regardless of the shape of the shoulder, and a bag that includes the shoulder belt. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view of a bag according to a first embodiment. [Figure 2] 1 is a schematic rear view of a bag according to a first embodiment. [Figure 3] 3 is a schematic enlarged partial rear view of region III in FIG. 2. [Figure 4] 1 is a schematic front view of a wearer with a relatively large shoulder angle wearing the bag according to embodiment 1. FIG. [Figure 5] 1 is a schematic front view of a wearer with a relatively small shoulder angle wearing the bag according to embodiment 1. FIG. [Figure 6] 10 is a schematic enlarged partial rear view of the bag according to the second embodiment. FIG. [Figure 7] FIG. 10 is a schematic front view of a bag according to a third embodiment when worn by a wearer. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, in which: FIG.

[0011] (Embodiment 1) <Bag composition> FIG. 1 is a schematic perspective view of bag 100 according to embodiment 1. FIG. 2 is a schematic rear view of bag 100 according to embodiment 1. FIG. 3 is a schematic enlarged partial rear view of region III in FIG. 2. Bag 100 shown in FIGS. 1 to 3 is a bag 100 that can store any object to be carried, and a wearer can carry the object stored in bag 100 by carrying bag 100 on their back. Bag 100 mainly comprises a bag body 1 and shoulder belts 2a and 2b.

[0012] As shown in FIGS. 1 to 3, shoulder belts 2a, 2b according to the first embodiment are attached to a bag body 1 and are passed over the shoulders and arms of a wearer. Specifically, shoulder belt 2a, which serves as a first shoulder belt, is passed over the wearer's right arm, right shoulder, and right chest. Shoulder belt 2b, which serves as a second shoulder belt, is passed over the wearer's left arm, left shoulder, and left chest. In other words, shoulder belts 2a, 2b are configured as a pair. The pair of shoulder belts 2a, 2b may be symmetrical or may be arranged in mirror symmetry with respect to center line A1 in FIG. 2. Center line A1 extends along the Y direction, which will be described later.

[0013] As shown in FIG. 1, the bag 1 includes a storage section 11 and an opening mechanism 13. The storage section 11 has an internal space for storing any desired item. The opening mechanism 13 may be, for example, an opening mechanism such as a zipper that can be opened and closed by human operation. By operating the opening mechanism 13, an opening is formed in the storage section 11, and the item can be placed into the internal space through the opening. The bag 1 includes a bottom 15. In the bag 1, the bottom 15 is located at a position farthest from the opening mechanism 13 in the Y direction.

[0014] 1 and 2, the bag body 1 includes a back portion 12. The back portion 12 is the portion that faces the back of a wearer when the bag 100 is worn by the wearer.

[0015] In a plan view seen from a direction perpendicular to the back portion 12 (a rear view of the bag shown in FIG. 2 in the first embodiment), the direction in which the opening mechanism 13 is provided as viewed from the bottom 15 of the internal space is defined as the Y direction. In a plan view seen from a direction perpendicular to the back portion 12, the direction perpendicular to the Y direction is defined as the X direction.

[0016] From a different perspective, the opening mechanism 13 is disposed in an upper region of the storage section 11 in the Y direction. The bottom 15 of the internal space is disposed in a lower region of the storage section 11 in the Y direction.

[0017] <Shoulder belt configuration> Next, the configuration of the shoulder belts 2a, 2b will be described. Each of the pair of shoulder belts 2a, 2b is connected to the bag body 1. Each of the pair of shoulder belts 2a, 2b may be connected to the storage compartment 11, or may be connected to the back portion 12 as shown in Figures 1 to 3.

[0018] Each of the pair of shoulder belts 2a, 2b mainly includes a main body portion 21, a plurality of elastic portions 22, and a length adjustment mechanism 23. The main body portion 21 includes one end 21a and the other end 21b. The main body portion 21 extends from the one end 21a to the other end 21b along a center line A2 shown in FIG. 3. In other words, the other end 21b is located opposite the one end 21a in the direction along the center line A2. The center line A2 is a line that passes through the center of the width of the main body portion 21.

[0019] As described above, the pair of shoulder belts 2a, 2b may be arranged to be mirror-symmetrical with respect to the direction in which the center line A1 in Fig. 2 extends. As shown in Fig. 3, the inclination angle θ1 of the center line A2 of the main body 21 with respect to the center line A1 of the bag 100 may be 10° or more and 50° or less, 15° or more and 45° or less, or 20° or more and 40° or less.

[0020] The inclination angle θ1 can be determined as follows. Specifically, the bag 100 is placed on a flat surface such as a floor so that the surface of the back portion 12 facing the wearer's back (hereinafter also referred to as the first main surface) faces vertically upward. In this state, the shoulder belts 2a, 2b are further positioned so that the inner circumferential surfaces (second surfaces 25b, which face the wearer's shoulders, etc., and will be described later) of the ends 21a of the shoulder belts 2a, 2b are positioned substantially flush with the first main surface. In this state, as shown in FIG. 3 , the center line A2 at the end 21a, which is the end connected to the elastic portion 22 of the main body 21, is extended outward from the end 21a. The angle at which the extended center line A2 intersects with the center line A1 of the bag 100 is defined as the inclination angle θ1. When extending the center line A2 outward from the end 21a, if the center line A2 at the end 21a is linear, the center line A2 is simply extended outward. On the other hand, when the center line A2 is curved at the one end 21a, the center line A2 may be extended in a tangential direction to the center line A2 in the region of the one end 21a.

[0021] 1 to 3, the main body portion 21 is strip-shaped. That is, the main body portion 21 has a first surface 25a and a second surface 25b. The second surface 25b is located opposite the first surface 25a. When the wearer wears the bag 100, the second surface 25b faces the shoulders and chest of the wearer. The main body portion 21 may be made of a stretchable material.

[0022] A plurality of elastic portions 22 are connected to one end 21a of the main body portion 21. The plurality of elastic portions 22 connect the one end 21a of the main body portion 21 to the bag body 1. The plurality of elastic portions 22 may be connected to the storage portion 11 of the bag body 1, or may be connected to the back portion 12 as shown in FIGS. 1 to 3. As shown in FIGS. 1 and 2, the plurality of elastic portions 22 may be connected near the opening mechanism 13, and connected to an upper region of the bag body 1 in the Y direction.

[0023] The multiple elastic portions 22 are stretchable members. When tension is applied to the elastic portions 22, the elastic portions 22 themselves stretch (the dimensions of the elastic portions 22 increase in the direction of the tension). The stretch rate of the elastic portions 22 may be greater than that of the main body portion 21. The stretch rate of the elastic portions 22 is 15 percent or more and 50 percent or less.

[0024] The elongation is measured in accordance with the constant load method of JIS L 1096:2020. Specifically, both ends of the sample to be measured are held by chucks. The ends of the sample are held so that the distance between the chucks is, for example, 20 cm. The length of the sample may be any length as long as the two chucks can hold the sample. A load is applied to the sample so that the tensile speed by the chucks is 200 mm / min. The load applied to the sample is 9.8 N. The amount of elongation (displacement) of the sample after applying a 9.8 N load to the sample is measured from the distance between the chucks before applying the 9.8 N load to the sample. The elongation is measured by calculating the ratio of the displacement to the distance between the chucks before applying the 9.8 N load to the sample.

[0025] Elastic portion 22 is a member that will not be damaged due to the weight of bag 100 and the contents contained in bag 100. The tensile strength of elastic portion 22 may be 400N or more.

[0026] The tensile strength is measured in accordance with the constant load method of JIS L 1096:2020. Specifically, both ends of the sample to be measured are held with chucks. The ends of the sample are held so that the distance between the chucks is 5 cm. A load is applied to the sample so that the tensile speed of the chuck is 200 mm / min. The tensile strength is the maximum load that can be confirmed among the loads applied to the sample. The maximum load that can be confirmed is, for example, the load immediately before the sample breaks when the load is applied to the sample, or the load immediately before the zipper slips due to the sample's fabric and comes off the sample. The elongation and tensile strength are both measured using an autograph (model number: AGS-X5KN) manufactured by Shimadzu Corporation.

[0027] The elastic portion 22 may be in the shape of a band or a string. The elastic portion 22 may be made of a material such as rubber.

[0028] The pair of shoulder belts 2a, 2b may each include a covering portion 26a, 26b. The covering portions 26a, 26b are formed from a material with a lower elongation rate than the elastic portions 22. The covering portions 26a, 26b cover both ends of the multiple elastic portions 22. Specifically, the covering portion 26a covers one end 21a of the main body portion 21 and one ends of the multiple elastic portions 22. The covering portion 26b covers the other ends of the multiple elastic portions 22.

[0029] 1 and 2, a length adjustment mechanism 23 is connected to the other end 21b of the main body portion 21. The length adjustment mechanism 23 connects the other end 21b of the main body portion 21 to the bag body 1. The length adjustment mechanism 23 may be connected to the storage section 11 of the bag body 1, or may be connected to the back portion 12 as shown in FIGS. 1 and 2. The length adjustment mechanism 23 may be connected near the bottom 15, or to a lower region of the bag body 1 in the Y direction.

[0030] Here, the shoulder belts 2a, 2b according to this embodiment 1 are characterized in that, as shown in Figures 1 to 3, one end 21a of the main body 21 is provided with a plurality of elastic portions 22 extending in different directions.

[0031] The number of elastic portions 22 may be two or more, may be three or more, or may be four or more. In the shoulder belts 2a and 2b according to the first embodiment, there are two elastic portions 22.

[0032] Specifically, the multiple elastic portions 22 include a first elastic portion 22a and a second elastic portion 22b. The multiple elastic portions 22 may be made of the same material. That is, the first elastic portion 22a and the second elastic portion 22b may be made of the same material. Of the multiple elastic portions 22, the first elastic portion 22a is disposed, for example, relatively close to the center line A1. Of the multiple elastic portions 22, the second elastic portion 22b is disposed, for example, in a region on the opposite side of the center line A1 from the first elastic portion 22a. From a different perspective, the second elastic portion 22b is disposed farther from the center line A1 in the X direction than the first elastic portion 22a.

[0033] As shown in FIG. 3, the first elastic portion 22a and the second elastic portion 22b are arranged in a V-shape. Specifically, the direction B1 in which the first elastic portion 22a extends is different from the direction B2 in which the second elastic portion 22b extends. The distance between the first elastic portion 22a and the second elastic portion 22b increases with increasing distance from the end 21a of the main body 21. The first elastic portion 22a can stretch along the direction B1, and the second elastic portion 22b can stretch along the direction B2. By arranging the multiple elastic portions 22 in a V-shape so that they stretch in different directions, the load applied to the wearer's shoulders can be reduced regardless of the shape of the shoulders. Furthermore, because the direction B1 in which the first elastic portion 22a extends is different from the direction B2 in which the second elastic portion 22b extends, the orientation (position) of the shoulder belts 2a and 2b can be easily changed to accommodate different shoulder shapes, compared to when the two directions B1 and B2 are the same.

[0034] As shown in FIG. 3 , the first elastic portion 22a and the second elastic portion 22b may extend in different directions relative to the direction in which the center line A2 of the main body portion 21 extends. The first elastic portion 22a and the second elastic portion 22b may be arranged to be mirror-symmetrical with respect to the direction in which the center line A2 extends. Specifically, the inclination angle θa of the direction B1 in which the first elastic portion 22a extends relative to the center line A2 of the main body portion 21 may be the same as the inclination angle θb of the direction B2 in which the second elastic portion 22b extends relative to the center line A2 of the main body portion 21. The inclination angles θa and θb may be 5° or more and 60° or less, 10° or more and 40° or less, or 15° or more and 30° or less. The inclination angles θa and θb may be different values.

[0035] The length of the first elastic portion 22a in the direction B1 in which the first elastic portion 22a extends may be the same as the length of the second elastic portion 22b in the direction B2 in which the second elastic portion 22b extends.

[0036] The length of the first elastic portion 22a in the direction B1 in which the first elastic portion 22a extends may be different from the length of the second elastic portion 22b in the direction B2 in which the second elastic portion 22b extends. In this way, the arrangement of the first elastic portion 22a and the second elastic portion 22b can be changed appropriately depending on the mass of the bag 100. As a result, the local load applied to the shoulders 200 is reduced, and the bag 100 can be worn by the wearer's entire body.

[0037] 3, each of the multiple elastic portions 22 is disposed on the same plane as the main body portion 21. If the elastic portion 22 is strip-shaped, the multiple elastic portions 22 may extend on the same plane as the second surface 25b of the main body portion 21. In this way, when the wearer wears the bag 100, tension is simultaneously generated in the first elastic portion 22a and the second elastic portion 22b due to the weight of the bag 100 containing the article to be transported.

[0038] Fig. 4 is a schematic front view of bag 100 according to embodiment 1 worn by a wearer whose shoulders have a relatively large inclination angle θ2. Fig. 5 is a schematic front view of bag 100 according to embodiment 1 worn by a wearer whose shoulders have a relatively small inclination angle θ2. As shown in Figs. 4 and 5, inclination angle θ2 of shoulder 200 is the angle formed by the imaginary outline of the wearer's shoulders 200 with respect to the horizontal direction (X direction).

[0039] As shown in FIG. 4, when a wearer with so-called sloping shoulders (shoulders with a large inclination angle θ2) wears the bag 100 according to the first embodiment, the shoulder belts 2a and 2b are relatively open to conform to the shape of the wearer's shoulders. That is, tension is applied to the shoulder belts 2a and 2b due to the weight of the bag 100 and the contents contained therein. As a result, the first elastic portion 22a and the second elastic portion 22b are stretched by this tension. Because the shoulder belts 2a and 2b are open as described above, the first elastic portion 22a stretches more than the second elastic portion 22b. As a result, the elastic force of the elastic portion 22 presses the shoulder belts 2a and 2b against the shoulder 200. As a result, the entire width of the second surface 25b (see FIG. 2) of the main body portion 21 of the shoulder belts 2a and 2b comes into contact with the shoulder 200. In this way, the area of ​​contact between the second surface 25b of the main body 21 and the shoulder 200 is increased, thereby reducing the local load (peak pressure) applied to the shoulder 200 and reducing the load applied to the shoulder 200.

[0040] As shown in FIG. 5, when a wearer with so-called hunched shoulders (shoulders with a small inclination angle θ2) wears the bag 100 according to the first embodiment, the shoulder belts 2a, 2b are in a relatively closed state according to the shape of the wearer's shoulder. Therefore, the second elastic portion 22b stretches more than the first elastic portion 22a. As a result, similar to the case shown in FIG. 4, the entire widthwise surface 25b (see FIG. 2) of the main body portion 21 of the shoulder belts 2a, 2b comes into contact with the shoulder 200. In this way, the area of ​​contact between the second surface 25b of the main body portion 21 and the shoulder 200 increases, thereby reducing the local load applied to the shoulder 200 and reducing the load applied to the shoulder 200.

[0041] That is, even if the shape of the wearer's shoulder 200 (for example, the inclination angle θ2) is different, the amount of change in the area of ​​contact between the second surface 25b of the main body 21 and the shoulder 200 is small. As a result, when the bag 100 equipped with the shoulder belts 2a, 2b according to the first embodiment is worn, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced.

[0042] <Action and effect> A shoulder belt 2a according to the present disclosure is connected to a bag body 1. The shoulder belt 2a includes a main body portion 21 and a plurality of elastic portions 22. The plurality of elastic portions 22 connect one end 21a of the main body portion 21 to the bag body 1. The plurality of elastic portions 22 extend in different directions from each other.

[0043] In this way, each of the multiple elastic portions 22 stretches to fit the shape of the wearer's shoulder 200. As a result, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced. In this specification, the phrase "the multiple elastic portions 22 extend in different directions" does not only mean that all of the multiple elastic portions 22 extend in different directions, but also means that two of the multiple elastic portions 22 extend in different directions (the extension directions of the other elastic portions may be the same or different).

[0044] According to the shoulder belt 2a, the multiple elastic portions 22 include first elastic portions 22a and second elastic portions 22b. The first elastic portions 22a and the second elastic portions 22b each extend in a different direction from the direction in which the center line A2 of the main body portion 21 extends.

[0045] In this way, each of the multiple elastic portions 22 stretches to fit the shape of the wearer's shoulder 200. As a result, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced.

[0046] According to the shoulder belt 2a, each of the elastic portions 22 is disposed on the same plane as the main body portion .

[0047] In this way, when the wearer wears the bag 100, tension is generated in the first elastic portion 22a and the second elastic portion 22b in accordance with the mass of the bag 100 containing the transported object.

[0048] According to the shoulder belt 2a, the plurality of elastic portions 22 stretch in different directions.

[0049] In this way, each of the multiple elastic portions 22 stretches to fit the shape of the wearer's shoulder 200. As a result, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced.

[0050] According to the shoulder belt 2a, the elastic portions 22 are made of the same material.

[0051] Even in such a case, the elongation rates of the multiple elastic portions 22 are different from each other. As a result, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced.

[0052] The bag 100 according to the present disclosure includes a bag body 1 and the above-mentioned shoulder belts 2a, 2b.

[0053] In this way, each of the multiple elastic portions 22 stretches to fit the shape of the wearer's shoulder 200. As a result, the local load applied to the shoulder 200 is reduced regardless of the shape of the shoulder 200, and the load applied to the shoulder 200 can be reduced.

[0054] According to the bag 100, the shoulder belts 2a, 2b include a pair of shoulder belts, ie, shoulder belt 2a as a first shoulder belt and shoulder belt 2b as a second shoulder belt.

[0055] In this way, the bag 100 according to the first embodiment can be used as a bag 100 that can be carried on both shoulders of the wearer.

[0056] (Embodiment 2) <Shoulder belt structure> Fig. 6 is a schematic, partially enlarged rear view of bag 100 according to embodiment 2. Fig. 6 corresponds to Fig. 3. Bag 100 shown in Fig. 6 basically has the same configuration as bag 100 shown in Figs. 1 to 3 and can achieve the same effects, but differs in that it has four elastic portions 22.

[0057] Specifically, the multiple elastic portions 22 include a first elastic portion 22a and a second elastic portion 22b, as well as a third elastic portion 22c and a fourth elastic portion 22d. The materials constituting the third elastic portion 22c and the fourth elastic portion 22d may be the same as each other or may be the same as the materials constituting the first elastic portion 22a and the second elastic portion 22b. As shown in FIG. 6 , the first elastic portion 22a and the third elastic portion 22c of the multiple elastic portions 22 are, for example, positioned relatively close to the center line A1. The second elastic portion 22b and the fourth elastic portion 22d of the multiple elastic portions 22 are, for example, positioned relatively far from the center line A1. From a different perspective, the second elastic portion 22b and the fourth elastic portion 22d are positioned farther from the center line A1 in the X direction than the first elastic portion 22a and the third elastic portion 22c. In the X direction, the third elastic portion 22c and the fourth elastic portion 22d are disposed so as to be sandwiched between the first elastic portion 22a and the second elastic portion 22b. The first elastic portion 22a and the third elastic portion 22c extend along the direction B1. The second elastic portion 22b and the fourth elastic portion 22d extend along the direction B2. From a different perspective, the multiple elastic portions 22 may include two or more elastic portions (the first elastic portion 22a and the third elastic portion 22c) extending along the first direction B1 and two or more elastic portions (the second elastic portion 22b and the fourth elastic portion 22d) extending along the second direction B2. The first elastic portion 22a, the second elastic portion 22b, the third elastic portion 22c, and the fourth elastic portion 22d may all extend in different directions.

[0058] The lengths of the multiple elastic portions 22 may be the same as each other, or may be changed depending on the placement position of the multiple elastic portions 22 relative to the bag 100, and the lengths of the multiple elastic portions 22 may be different from each other.

[0059] By increasing the number of elastic portions 22 in this way, the load applied to the shoulder 200 of the wearer can be further reduced regardless of the shape of the shoulder 200.

[0060] (Embodiment 3) <Shoulder belt structure> Fig. 7 is a schematic front view of the bag 100 according to embodiment 3 when worn by a wearer. The bag 100 shown in Fig. 7 basically has the same configuration as the bag 100 shown in Figs. 1 to 3 and can achieve the same effects, but differs in that the shoulder belts 2a, 2b are provided with restraining portions 28.

[0061] The restraining portion 28 is a member made of a material that is less stretchable, i.e., has a smaller elongation rate, than the elastic portion 22. When the wearer wears the bag 100, the restraining portion 28 is bent. The restraining portion 28 is connected to one end and the other end of the elastic portion 22.

[0062] As described above, the elastic portion 22 is stretchable. However, if the elastic portion 22 is stretched to its full extent due to the weight of the bag 100 and the contents contained therein, the effect of the elastic portion 22 may not be fully achieved, and even problems such as damage to the elastic portion 22 may occur. Therefore, to prevent the elastic portion 22 from being fully stretched, the length to which the elastic portion can be stretched is limited by the restraining portion 28. Note that the connection portion of the restraining portion 28 may be located anywhere as long as it can prevent the elastic portion 22 from being fully stretched. For example, the restraining portion 28 may be located so as to connect one end 21a of the main body portion 21 to the bag body 1.

[0063] Although the shoulder belts 2a and 2b are described as being configured as a pair, the shoulder belt 2a may be used in a different manner. For example, the bag 100 may be a bag 100 such as a shoulder bag or golf bag in which one shoulder belt 2a is connected to the bag body 1.

[0064] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. Unless inconsistent, at least two or more of the embodiments disclosed herein may be combined. The basic scope of the present disclosure is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0065] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) A shoulder belt connected to the bag body, The shoulder belt includes a main body and a plurality of elastic portions connecting one end of the main body portion and the bag body; A shoulder belt, wherein the elastic portions extend in different directions from each other. (Appendix 2) The shoulder belt according to claim 1, wherein the plurality of elastic portions include a first elastic portion and a second elastic portion each extending in a different direction relative to a direction in which a center line of the main body portion extends. (Appendix 3) 3. The shoulder belt according to claim 1, wherein each of the plurality of elastic portions is disposed on the same plane as the main body portion. (Appendix 4) 4. The shoulder belt according to claim 1, wherein the plurality of elastic portions stretch in different directions. (Appendix 5) 5. The shoulder belt according to claim 1, wherein the elastic portions are made of the same material. (Appendix 6) A bag body, A bag comprising a shoulder belt according to any one of Supplementary Note 1 to Supplementary Note 5. (Appendix 7) The bag of claim 6, wherein the shoulder belt includes a pair of first and second shoulder belts. [Explanation of symbols]

[0066] 1 bag body, 2a, 2b shoulder belt, 11 storage section, 12 back portion, 13 opening mechanism, 15 bottom, 21 main body, 21a one end, 21b other end, 22 elastic portion, 22a first elastic portion, 22b second elastic portion, 22c third elastic portion, 22d fourth elastic portion, 23 adjustment mechanism, 25a first surface, 25b second surface, 26a covering portion, 26b covering portion, 28 restraining portion, 100 bag, 200 shoulder, A1 center line, A2 center line, B1 direction, B2 direction, Q internal space, θ1, θ2, θa, θb inclination angle.

Claims

1. A shoulder belt connected to the bag body, The shoulder belt includes a main body and a plurality of elastic portions connecting one end of the main body portion and the bag body; A shoulder belt, wherein the elastic portions extend in different directions from each other.

2. The shoulder belt according to claim 1 , wherein the plurality of elastic portions include a first elastic portion and a second elastic portion each extending in a different direction relative to a direction in which a center line of the main body portion extends.

3. The shoulder belt according to claim 1 , wherein each of the plurality of elastic portions is disposed on the same plane as the main body portion.

4. The shoulder belt according to claim 1 , wherein the plurality of elastic portions stretch in different directions.

5. The shoulder belt according to claim 1 , wherein the elastic portions are made of the same material.

6. A bag body, A bag comprising the shoulder belt according to any one of claims 1 to 5.

7. 7. The bag of claim 6, wherein the shoulder belts include a pair of first and second shoulder belts.

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