JP2019216841A - Backpack - Google Patents

Abstract

To provide a backpack excellent in fitting property.SOLUTION: In a backpack including a housing body 10 having an opening 13 formed on an upper part, a lid body 20 for opening or closing the opening 13, and a pair of shoulder belts 30 for a knapsack, a back storage part 15 projecting from a side wall 12 on the back side is provided on the side wall 12 on the back side of the housing body 10, and the back storage part 15 is provided on a position abutting on a curved recess of the back in the carrying state of the backpack.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a backpack.

  As a backpack for carrying luggage, various types of backpacks have been proposed to suit the purpose of use and the taste of the user. For example, in a school bag used by elementary school students for school, various improvements have been made from the viewpoint of durability, operability, storability, fit, decoration, and the like.

  Patent Literature 1 describes improving the shape of a shoulder belt attachment portion provided on a school bag from the viewpoint of improving the fit of the school bag. It is said that by improving the shape of the attachment portion, the back surface of the school bag can easily adhere to the back of the user, which improves the fit and does not make the school bag feel heavy.

JP 2004-358019 A

  By the way, while various improvements have been made to the performance of the school bag, the shape of the school bag itself has been fixed to a certain shape since ancient times, and the shape itself has not been significantly changed. This is due to the emphasis on durability and storability so that the school bag can store and use many textbooks and collections of materials for a long period of six years. For this reason, the storage body of the school bag is formed of a hard material and has a substantially rectangular parallelepiped shape with an open top.

  On the other hand, the back of a human has a curved shape following the shape of a spine that is curved in an S shape, and a concave portion (curved concave portion) having a curved shape is formed at an upper and lower middle position of the back. For this reason, the conventional school bag as shown in FIG. 6B tends to be in a state where the lower end of the back side wall is supported by the curved concave portion of the back, and the upper portion of the school bag is inclined backward to the rear. Cheap. In such a backward tilted state, the upper portion of the school bag is tilted in a direction away from the back, so that there is a problem that the fit is not good.

Such a problem of fit is common to backpacks for carrying luggage and carrying.
The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a backpack having excellent fit.

  In order to solve the above problems, a backpack of the present invention includes a storage body having an opening formed in an upper part, a lid capable of opening or closing the opening, and a pair of shoulder belts for carrying. A backpack provided with a backside storage portion projecting from the backside side wall on a backside side wall of the storage body, wherein the backside storage portion is provided with a backpack in a state of carrying the backpack. Is provided at a position in contact with the curved concave portion.

  According to the above configuration, in a state where the backpack is carried on the back, the back storage portion projecting from the side wall on the back side of the backpack comes into contact with the curved concave portion on the back. Since the back storage portion is supported by being in contact with the curved concave portion of the back, it is possible to prevent the storage main body from entering the curved concave portion and being inclined backward. The backpack easily conforms to the curved shape of the back, and a backpack with excellent fit is obtained. Further, the provision of the rear storage section increases the storage space of the backpack. A backpack with excellent storability is obtained.

  In the above invention, the upper portion of the rear storage portion is formed in a slope shape in which the amount of projection from the side surface on the rear side increases toward the lower side, and the lower portion of the rear storage portion increases on the rear side toward the upper side. It is preferable that the projection is formed in a slope shape having a large protrusion amount from the side surface.

  In the above invention, it is preferable that an opening configured to be openable and closable by a fastener is formed in an upper portion of the back storage part, and the fastener and a handle portion thereof are covered by a cover member.

  In the above invention, the back storage portion is provided with a pair of belts extending from each of the both ends in the width direction, one of the belts is connected to one of the shoulder belts, and the other of the belts, Preferably, it is connected to the other shoulder belt.

  In the above invention, at least one of the pair of adjustment belts has an end on the back storage portion side, and a waist contact portion that is relatively wider than an end on the shoulder belt side is formed, It is preferable that a waist storage part is provided in the waist contact part.

  ADVANTAGE OF THE INVENTION According to this invention, the backpack excellent in the fitting property can be obtained.

FIG. 2 is a perspective view showing the backpack of the first embodiment. (A) is a perspective view as viewed from the front side wall, and (b) is a perspective view as viewed from the lid side (rear side). (A), (b) is a perspective view which shows the state which opened the cover part of the backpack. The figure explaining the joining part of a shoulder belt. FIG. 4 is a schematic diagram illustrating a back storage unit and a lid unit. (A) is a schematic side view, (b) is a schematic perspective view. The figure explaining a back storage part. (A) is a figure which shows the state which the fastener of the opening was covered with the cover member, and (b) is a figure which shows the state in which a part of fastener of an opening and a handle part were exposed from the cover member. The figure which shows the state which carried the backpack. (A) is a diagram showing a state of carrying a backpack of the present embodiment, and (b) is a diagram showing a state of carrying a conventional backpack (school bag). Explanatory drawing which shows the backpack of 2nd Embodiment. (A) is a perspective view, (b) is a side view. The figure which shows the example of a change of a backpack. (A) is a perspective view, (b) is a side view. The perspective view which shows the example of a change of a backpack. The perspective view which shows the example of a change of a backpack.

(1st Embodiment)
Hereinafter, a backpack according to a first embodiment of the present invention will be described with reference to a backpack used by schoolchildren for commuting.

  As shown in FIG. 1, the backpack according to the present embodiment includes a main body 10 as a storage main body capable of storing teaching materials and the like, a lid 20 covering an upper surface and one side surface of the main body 10, and an upper end of the main body 10. And a shoulder belt 30 bridged between the lower end and the lower end. In the following description, the front, rear, up, down, left, and right directions of the bag pack are defined as shown in FIG. The side that comes into contact with the back when carrying the backpack, that is, the back side of the main body 10 will be referred to as the front side, and the side covered by the lid 20 will be referred to as the rear side.

  The material of the backpack is not particularly limited, and can be appropriately selected in accordance with required properties such as strength, weight, and feel. For example, cloths made of synthetic fibers such as polyamide resin and polyester resin, cloths made of natural fibers such as cotton, hemp, wool, leather, carbon cloth and the like can be mentioned. The main body 10 of the present embodiment uses a resin plate material as a core material and is covered with a cloth made of a polyamide resin. The lid 20 and the shoulder belt 30 of the present embodiment use a soft urethane sheet as a core and covered with a cloth made of a polyamide resin.

  As shown in FIGS. 1 and 2, the main body 10 is formed in a substantially rectangular parallelepiped shape having a substantially rectangular bottom wall 11 and four side walls 12 erected from the periphery of the bottom wall 11. Here, of the four side walls 12, the front side wall 12 of the backpack is referred to as a rear wall 12a, the back side wall 12 of the backpack is referred to as a front wall 12b, and the left and right side walls 12 are referred to as side walls 12c. I do. As shown in FIGS. 2A and 2B, in the main body 10 of the present embodiment, the upper edge of the rear wall 12a is formed below the upper edge of the front wall 12b. The upper edge of the side wall 12c is rounded upward so as to connect between the left and right ends of the upper edge of the rear wall 12a and the left and right ends of the upper edge of the front wall 12b. It is formed in a curved shape that protrudes. At the upper part of the side wall 12c, an inward extending wall 12d is formed over the entire front and rear direction of the side wall 12c. The upper edge of each of the side walls 12a, 12b, 12c, specifically, the upper edge of the rear wall 12a, the upper edge of the front wall 12b, and the edge of the extension wall 12d of the side wall 12c form the opening 13 Is formed.

  As shown in FIG. 1A, a rear storage unit 15 having a size approximately half that of the front wall 12b is provided below the outer surface of the front wall 12b. As shown in FIG. 4A, the rear storage unit 15 protrudes forward from the front wall 12 b of the main body unit 10 and has a predetermined thickness in the front-rear direction. The back storage portion 15 is formed in a shape following the curved surface of the back when carrying the backpack (a shape along the curved concave portion of the back). Specifically, the upper part of the back storage part 15 is formed in a slope shape in which the amount of protrusion from the front wall 12b increases as going downward, and the amount of protrusion in the lower part increases from the front wall 12b as going upward. It is formed in a slope shape.

  As shown in FIG. 5A, an opening configured to be openable and closable by a fastener 15a extending in the left-right direction is formed at an intermediate portion in the front-rear direction of the upper sloped portion of the rear storage unit 15, It is configured such that accessories can be stored in the rear storage unit 15 through the opening. The fastener 15a is a known line fastener, and a handle portion 15b that is held when opening and closing the opening is attached to a tip end thereof. The fastener 15a and the handle portion 15b are covered from above by a cover member 15c sewn to the rear storage unit 15.

  As shown in FIG. 5B, the cover member 15c is sewn to the upper edge of the upper sloped portion of the rear storage portion 15 only at the rear edge thereof, and the front edge of the cover member 15c is turned up. In this case, the fastener 15a and the handle portion 15b are exposed. Therefore, when the fastener 15a is operated to put small articles in and out of the opening, the cover member 15c may be turned to expose the fastener 15a and the handle 15b. 4 and 5 are schematic diagrams illustrating the rear storage unit 15 and the lid unit 20, and are diagrams in which some of the constituent members such as the shoulder belt 30 and the like are omitted.

  The back storage section 15 of the present embodiment has a hardness not to be crushed when the backpack is carried on a backpack, and has an appropriate flexibility. Therefore, even in a state where no object is stored inside, the shape protruding forward from the front wall 12b can be maintained. Also, it has an excellent fit when hitting the back of the user.

  As shown in FIG. 1 (a), a pair of left and right backrests 14 are provided at the upper portion of the outer surface of the front wall 12b, which contact the back of the user when carrying the backpack. The backrest 14 protrudes forward from the front wall 12b, and has grooves 14a extending in the left-right direction at predetermined intervals. As shown in FIG. 4A, the backrest portion 14 is formed so that the amount of protrusion from the front wall 12b increases as going downward. The backrest portion 14 is made of a flexible material such as a foamed polyurethane foam, and is configured to easily fit the back of the user when the user carries the backrest.

  As shown in FIG. 1A, at the upper portion of the outer surface of the front wall 12 b and between the pair of backrests 14, a locking portion 23, which will be described later, provided at the distal end of the lid 20. And a locked portion 12e that locks the lid 20 to close the lid portion 20 is provided. In the present embodiment, the locking portion 23 and the locked portion 12e are formed of a known locking member such as a buckle.

  As shown in FIG. 1 (b), at the upper end of the outer surface of the front wall 12b, at a position between the pair of backrests 14, a hook for hooking on a wall or a desk or the like is provided. A stop 40 is provided. In the present embodiment, the hanging portion 40 is a belt-shaped fabric made of synthetic resin and joined to the front wall 12b at both ends.

  As shown in FIGS. 1A and 1B, side pockets 16 that can store small items are provided at lower portions of the outer surfaces of the pair of side walls 12c. The side pocket 16 has a shape that is closed in the front-rear direction and on the lower side, and is open upward.

  As shown in FIG. 2B, a main body storage portion 17 that can store small items is provided on the outer surface of the rear wall 12a. The main body storage portion 17 can be opened and closed by a fastener 17a provided from the upper portion to the side portion. On the front surface of the main body storage section 17, a name entry section 17b into which a paper piece on which the name of the user is entered can be inserted is provided.

  As shown in FIGS. 1 and 2, a belt fastener (described later) provided on the lid portion 20 at an intermediate portion in the vertical direction of the main body portion 10 and at a boundary portion between the front wall 12b and the side wall 12c. There is provided a storage section-side adjustment belt 18 which engages with the cover 24 and holds the cover section 20 in a predetermined state. The storage-portion-side adjustment belt 18 is joined to each of the boundary portions between the side walls 12c and the front wall 12b.

  As shown in FIG. 2B, the lid 20 of the present embodiment is joined to a boundary between the bottom wall 11 and the rear wall 12a of the main body 10. The width of the lid 20 in the left-right direction is equal to or slightly larger than the width of the main body 10 in the left-right direction. Further, the length of the lid 20 is formed to be slightly longer than the length from the joint position to the main body 10 to the upper edge of the front wall 12b. Here, as shown in FIG. 1, in a state where the lid 20 closes the opening 13, a surface that is exposed to the outside is called an outer surface 20 a of the lid 20, and a surface that is not exposed is an inner surface of the lid 20. 20b.

  As shown in FIG. 1B, a shock absorbing portion 21 extending in the left-right direction is provided on the outer surface 20 a of the lid portion 20 over the entire surface. The shock absorbing portion 21 is formed of a flexible material such as foamed polyurethane foam, and when the external shock is applied to the lid portion 20, the material stored in the main body portion 10, the rear storage portion 15, or the like. Can be protected.

  As shown in FIG. 2B, a lid pocket 22 having a size approximately half of that of the lid 20 is provided on the tip side of the inner surface 20 b of the lid 20. The lid pocket 22 is formed by stitching a transparent resin sheet to both ends and a distal end of the lid 20, and a fastener 22 a is provided at a base end thereof via a horizontally extending fabric. In the lid pocket 22, for example, a one-week timetable for studying at elementary school can be put.

  A locking portion 23 that locks with the locked portion 12e provided on the upper portion of the front wall 12b and closes the lid portion 20 is provided at a middle position in the left-right direction at the front end of the lid portion 20. Further, a belt fastener 24 that engages with the storage-portion-side adjustment belt 18 provided in the main body 10 is provided at the left and right edges of the lid 20 at intermediate positions in the length direction. The belt fastener 24 of the present embodiment is a known ring-shaped member that can hang a belt-shaped member.

  As shown in FIG. 1, when the locking portion 23 of the lid 20 is locked with the locked portion 12 e of the front wall 12 b, the lid 20 is in a fully closed state in which the opening 13 is closed. As shown in FIG. 2A, the locking state of the locking portion 23 of the lid portion 20 and the locked portion 12e of the front wall 12b is released, and the storage-unit-side adjustment belt 18 and the belt fastener 24 are engaged. When they are in contact, the lid 20 is in a half-open state where it is held in the middle of the rear wall 12a. As shown in FIG. 2B, the locked state between the locking portion 23 of the lid 20 and the locked portion 12e of the front wall 12b is released, and the accommodation-section-side adjustment belt 18 and the belt fastener 24 are released. When the engagement state with the rear wall 12a is released, the rear wall 12a is in a fully open state where the entire rear wall 12a is exposed.

  As shown in FIGS. 2B and 4, a biasing member 25 extending in the length direction is inserted inside the left and right edges of the lid 20. Specifically, an urging sheet 25, which is a long and narrow plate-shaped resin material, is joined to a urethane sheet as a core material of the lid 20. The urging sheet 25 is covered with a cloth made of a polyamide resin together with the urethane sheet. Is configured. As shown in FIG. 2B, the urging member 25 is inserted at a position adjacent to the belt fastener 24 provided on the lid 20 so as to extend in the length direction of the lid 20.

  As shown by an arrow in FIG. 4A, the urging member 25 is a member for urging the upper portion of the lid 20 to warp forward. Therefore, as shown in FIG. 4B, when the locked state of the locking portion 23 at the tip of the lid portion 20 and the locked portion 12e of the front wall 12b is released, the lid portion 20 is moved as indicated by an arrow. It is urged forward to move in a direction to open the opening 13, and holds the lid 20 in a half-open state.

  As shown in FIG. 1A, the shoulder belt 30 has a belt body 31 having one end joined to the upper end of the front wall 12b, and an adjustment belt joined to one end of the shoulder wall 30 at the lower end of the side wall 12c. 32. A known annular buckle is attached to the other end of the belt main body 31, and the other end of the adjustment belt 32 can be inserted into the annular buckle to adjust the length.

  As shown in FIG. 1B, the back of the belt body 31 (here, the side that contacts the user when carrying the back is referred to as the back, and the side that does not contact is referred to as the front) is a shoulder pad. A portion 33 is formed. The shoulder pad 33 is made of a flexible material such as a foamed polyurethane foam, so that it is easy to fit from the shoulder to the upper arm when the user is carrying the shoulder, and the burden on the shoulder is reduced. Further, a groove 33 a extending in the width direction of the belt main body 31 is formed in the shoulder contact portion 33.

  As shown in FIG. 3, a reinforcing portion 35 as a core material is inserted in a region straddling a joining portion 31 a where the belt main body 31 is joined to the front wall 12 b. The reinforcing portion 35 is joined to a urethane sheet as a core of the belt main body 31 and is joined to a resin plate as a core of the main body 10. The reinforcing portion 35 is formed of a hard synthetic resin plate material, and is inserted into a region extending from one end of the belt main body 31 to the upper end of the front wall 12b across the joining portion 31a. Therefore, the belt main body 31 is reinforced so as to rise upward from the front wall 12b.

Next, the operation of the backpack of the first embodiment will be described.
In the backpack of the first embodiment, one end of the lid 20 is joined to the lower end of the rear wall 12 a of the main body 10, and a locking portion 23 is provided at the other end of the lid 20. . The locked portion 12e of the main body 10 is provided at the upper end of the outer surface of the front wall 12b of the main body 10. Therefore, when the locking portion 23 of the lid 20 is locked to the locked portion 12e of the front wall 12b, the opening 13 is closed. At this time, the upper edge of the side wall 12c of the main body 10 is formed in a curved shape protruding rounded upward, and the lid 20 having a soft urethane sheet as a core material has flexibility. Therefore, the lid 20 closes the opening 13 along the upper edge of the side wall 12c.

  The side wall 12c is formed with an inward extending wall 12d. The width of the lid 20 is the same as or slightly larger than the width of the main body 10 in the left-right direction, and the length of the lid 20 is the length from the joint position with the main body 10 to the upper edge of the front wall 12b. It is formed slightly longer than the length. Therefore, when the lid 20 closes the opening 13, the entire opening 13 is covered with the lid 20, and the generation of a gap between the opening 13 and the lid 20 is suppressed.

  At the upper end of the outer surface of the front wall 12b of the main body 10, a hook 40 for hooking on a hook such as a wall is provided. Therefore, when the backpack is hung on the hook on the wall, the front wall 12b of the backpack contacts the wall, and the rear wall 12a of the backpack comes to the opposite side of the wall. When taking in and out of an object in this state, the user stands facing the rear wall 12a of the backpack, reaches for the front wall 12b of the main body 10, and connects the locking portion 23 with the locked portion 12e. Release the locked state. At this time, the lid 20 is opened to the side opposite to the wall. The lid 20 is urged in the opening direction by the urging members 25 inserted inside the left and right edges of the lid 20. Therefore, when the locked state between the locking portion 23 and the locked portion 12e is released, the lid portion 20 is opened while being urged toward the side opposite to the wall on which the backpack is hung, and the lid portion 20 is opened. It is kept open.

  The cover 20 is provided with a belt fastener 24 at an intermediate position in the longitudinal direction, and is engaged with the accommodation-side adjustment belt 18 provided on the main body 10. When the cover part 20 is opened and the belt fastener 24 and the storage part side adjustment belt 18 are in the engaged state, the cover part 20 is in a half-open state as shown in FIG. Will be retained. When the lid 20 is opened and when the engagement between the belt fastener 24 and the accommodation-portion-side adjustment belt 18 is released, the lid 20 is as shown in FIG. It is kept fully open.

  A reinforcing portion 35, which is a hard synthetic resin plate material, is inserted into a region of the shoulder belt 30 that straddles a joint portion 31a where the belt body 31 is joined to the front wall 12b. The reinforcing portion 35 is inserted into a region extending from one end of the belt main body 31 to the upper end of the front wall 12b across the joining portion 31a, and holds the belt main body 31 so as to rise upward from the front wall 12b. ing. Therefore, as shown in FIG. 6A, the shoulder belt 30 easily follows the line from the back to the shoulder of the user, and a gap is hardly generated between the backpack and the back of the user. On the other hand, in the conventional school bag as shown in FIG. 6B, a gap is easily formed between the user and the back of the user, and the center of gravity tends to be biased toward the rear side of the user, resulting in poor usability.

  At the lower portion of the outer surface of the front wall 12b of the main body 10, a rear storage portion 15 having a shape protruding forward is provided. The upper portion of the rear storage portion 15 is formed in a slope shape in which the amount of projection from the front wall 12b increases as going downward, and the lower portion of the back storage portion 15 has a slope shape in which the projection amount from the front wall 12b increases as going upward. Is formed. And it has such a hardness that it does not collapse when carrying the backpack. Therefore, as shown in FIG. 6A, when the backpack is carried on the back, the back storage portion 15 abuts on the curved concave portion of the back while maintaining its shape, and follows the curved surface shape of the back (curved shape of the spine). To fit.

  In addition, a pair of left and right backrest portions 14 having a shape protruding forward are provided on the upper portion of the outer surface of the front wall 12b. The backrest portion 14 is formed such that the amount of protrusion from the front wall 12b increases as going downward. Therefore, as shown in FIG. 6A, when the backpack is carried on the back, the backrest 14 also fits along the curved shape of the back.

According to the backpack of the first embodiment, the following effects can be obtained.
(1) In a conventional school bag as shown in FIG. 6 (b), each side wall has a substantially rectangular parallelepiped shape standing upright with respect to the bottom wall, and the front wall has a flat shape. Therefore, the front wall is difficult to follow the curved surface shape of the back, and the fitting property is poor. In this regard, in the backpack of the present embodiment, as shown in FIG. 6A, the outer shape of the back storage portion 15 is formed in a curved shape of the spine (curved surface of the back). Therefore, when carrying the backpack, the rear storage portion 15 fits the curved shape of the back. A backpack with excellent fit can be obtained.

  (2) A conventional school bag as shown in FIG. 6B has a substantially rectangular parallelepiped shape in which each side wall stands upright with respect to a bottom wall, and a front wall has a planar shape. Therefore, the design shape of the school bag tends to be such that the lower end of the front wall is supported by the curved concave portion of the back, and the upper portion of the school bag tends to be inclined after moving away from the back. In addition, the upper end of the textbooks and material collections stored inside is easy to lean to the rear side, and especially when many textbooks and material collections are stored and the overall weight becomes large, the rearward inclination of the school bag becomes noticeable. Become. Further, even when the center of gravity is increased by storing a tall object such as a textbook or a collection of materials, the school bag tends to be inclined backward. When the school bag is tilted backward, a force acting rearward acts on the user due to the weight of the school bag and the weight of the contents. In particular, in a conventional school bag having a thickness in the front-back direction, the tendency is remarkable.

  In this regard, since the backpack of the present embodiment includes the backside storage section 15, the backside storage section 15 provided on the front wall 12b of the main body section 10 is supported in contact with the curved concave portion of the back. Thereby, it is suppressed that the main body 10 enters the curved concave portion and is inclined backward, so that a good feeling of use and stability can be obtained. Further, the upper portion of the backpack is hard to separate from the back, and a gap is hardly generated between the backpack and the back. This makes it difficult for the textbooks and the like stored in the backpack to lean toward the front wall 12b, and is stably held.

  (3) In the backpack of the present embodiment, the upper part of the rear storage part 15 is formed in a slope shape in which the amount of projection from the front wall 12b increases as going downward, and the lower part of the rear storage part 15 goes upward. It is formed in a slope shape with a large amount of protrusion from the front wall 12b. Therefore, it is easy to follow the curved shape of the back and has excellent fit.

(4) Since the rear storage unit 15 is provided, small items can be stored in the rear storage unit 15. Excellent storage.
(5) The rear storage unit 15 is provided at a lower portion of the outer surface of the front wall 12b, and has a size approximately half of that of the front wall 12b. Therefore, the center of gravity of the backpack is reduced by the amount of the rear storage unit 15 formed. Excellent stability.

  (6) In the backpack of the present embodiment, the back storage section 15 is provided on the front wall 12b. Therefore, the position of the center of gravity of the backpack can be closer to the back of the user. The direction in which the backpack moves away from the back is difficult to tilt and has excellent stability.

  (7) In the backpack of the present embodiment, since the back storage portion 15 is formed of a flexible material, the back storage portion 15 is soft against the back. It has excellent fit to the back and can be stably held.

  (8) In the backpack of the present embodiment, a reinforcing portion 35 made of a hard synthetic resin plate is inserted into a joint portion 31a where the belt body 31 of the shoulder belt 30 is joined to the front wall 12b. Since the reinforcing portion 35 holds the belt main body 31 so as to rise upward from the front wall 12b, as shown in FIG. 6A, the shoulder belt 30 extends along the line from the back to the shoulder of the user. It is easy to follow along, and a gap is hardly generated between the backpack and the back of the user. Also from this point, the direction in which the upper part of the backpack separates from the back is hardly inclined, and the stability is excellent.

  (9) An opening is formed in the middle part of the upper sloped portion of the rear storage unit 15 so as to be opened and closed by a fastener 15a extending in the left-right direction. A handle portion 15b that is held when opening and closing the opening is attached to the tip of the fastener 15a. The fastener 15a and the handle portion 15b are covered from above by a cover member 15c sewn to the rear storage unit 15. Therefore, when the backpack is carried on the back, the fastener 15a and the handle portion 15b are prevented from hitting the back, and the rubbing by the fastener 15a and the handle portion 15b is suppressed. Even when the fastener 15a and the handle portion 15b are provided, it is possible to suppress a sense of discomfort during use.

  (10) In the backpack of the present embodiment, a pair of left and right backrests 14 are provided on the upper outer surface of the front wall 12b to come into contact with the back of the user when carrying the backpack. The backrest portion 14 is formed such that the amount of forward projection increases toward the lower portion of the front wall 12b. Therefore, a backpack that easily conforms to the curved shape of the back and is excellent in fit is obtained. Further, the position of the backpack can be stably held when the user carries the backpack.

  (11) In the backpack of the present embodiment, the backrest 14 provided on the upper portion of the front wall 12b is formed of a flexible material such as polyurethane foam. Therefore, it has excellent fit to the back and can be stably held.

  (12) In the backpack of this embodiment, the shoulder pad 33 is provided on the belt main body 31 of the shoulder belt 30, and when the backpack is carried on the back, the shoulder pad 33 hits from the back of the user to the front of the shoulder. . Therefore, a good fit and a feeling of use can be obtained, and the user can stably carry the back.

  (13) In the backpack of the present embodiment, the locking portion 23 provided on the lid portion 20 is locked with the locked portion 12e provided on the upper end portion of the outer surface of the front wall 12b of the main body portion 10 to open. The portion 13 is closed, the locked state is released, and the opening 13 is opened. A hook 40 is provided at the upper end of the outer surface of the front wall 12b of the main body 10 for hanging on a hook such as a wall.

  Therefore, when the backpack is hung on the hook on the wall and the object is taken in and out, the user reaches the front wall 12b located on the wall side and reaches the locking state between the locking portion 23 and the locked portion 12e. Is released, the lid 20 is opened to the side opposite to the wall. In a conventional school bag that opens in the direction of the wall, the opening is closed unless the lid is supported by hand or the like, but the backpack according to the present embodiment in which the lid 20 is opened in the direction in which no wall exists. Then, it is convenient because objects can be taken in and out without supporting the lid. Operability can be improved.

  (14) In the backpack of the present embodiment, the lid 20 is urged in the opening direction by the urging members 25 inserted into the left and right edges of the lid 20. Therefore, when the locking state between the locking portion 23 and the locked portion 12e is released, the upper end portion rotates so that the lid portion 20 is opened, and is held as it is when the lid portion 20 is opened. A backpack with excellent operability is obtained.

  (15) In the backpack of the present embodiment, when the cover 20 has flexibility and the opening 13 is closed by the cover 20, a gap is not easily formed between the cover 20 and the opening 13. It has been like that. Therefore, it is possible to prevent rainwater from entering the main body 10 and dust or dust from entering the main body 10.

  (16) In the backpack of this embodiment, the shoulder belt 30 is constituted by the belt main body 31 and the adjustment belt 32, and the length can be appropriately adjusted. Therefore, it is easy to adjust the length of the shoulder belt 30 according to the user's physique, to set the back storage unit 15 at a position that fits the curved shape of the back, or to make the shoulder belt 30 along the back. Can be. Operability can be improved.

  (17) In the backpack of this embodiment, a shoulder pad 33 made of a flexible material such as polyurethane foam is provided on the back surface of the shoulder belt 30. As a result, the backpack has excellent shoulder fit.

  (18) In the backpack of the present embodiment, the groove 14a is provided in the backrest 14 and the groove 33a is provided in the shoulder support 33. For this reason, a portion that does not come into contact with the back is formed even in the state of carrying the back, a gap is formed between the back and the back, and air permeability can be secured. Further, the provision of the groove 33a makes the bendability of the backrest portion 14 good, and it is easy to follow the curved shape of the back of the user. This point is the same for the groove 33a of the shoulder pad 33, so that air permeability can be ensured and it is easy to follow the shoulder of the user. A backpack with good breathability and fit is obtained.

  (19) In the backpack of the present embodiment, a belt fastener 24 is provided at an intermediate position in the length direction of the lid 20, and is engaged with the accommodation-side adjustment belt 18 provided in the main body 10. Therefore, when the opening 13 is opened, the lid 20 can be held in a half-open state. When the engaged state is released, the fully opened state can be achieved. Normally, it is set to a half-open state, and when things are taken in and out of the main body storage section 17 provided on the rear wall 12a of the main body section 10 and the lid pocket 22 formed on the lid section 20, it is sufficient to set the full open state. Versatility can be improved.

  (20) The thickness of the main body 10 in the front-rear direction can be adjusted by adjusting the engagement position of the housing-side adjustment belt 18 with the belt fastener 24. Versatility and storability can be improved.

  (21) In the backpack of the present embodiment, in addition to the main body 10, the rear storage section 15 provided on the front wall 12b, the main body storage section 17 provided on the rear wall 12a, and the side provided on the side wall 12c. It has a pocket 16 and a lid pocket 22 provided on the lid 20. Using the storage sections 15 and 17 and the pockets 16 and 22, it is possible to store teaching materials and other small items. A backpack with excellent storability is obtained.

  (22) In the backpack of the present embodiment, the impact absorbing portion 21 is provided on the lid portion 20. Therefore, when an external impact is applied to the lid portion 20, the objects stored in the main body portion 10, the rear storage portion 15, and the like can be protected.

(2nd Embodiment)
Next, a backpack according to a second embodiment will be described. The backpack of the second embodiment will also be described by taking a backpack used by schoolchildren for commuting to school as an example. In the following description, portions different from the backpack of the first embodiment will be described.

  As shown in FIG. 7A, the backpack of the second embodiment differs from the backpack of the first embodiment in the configuration of the shoulder belt 30. Further, the backpack differs from the backpack of the first embodiment in that the backrest 14 is not provided on the upper part of the outer surface of the front wall 12b. As shown in FIG. 7B, the shoulder belt 30 of the backpack includes a belt body 31 having one end joined to an upper end of the front wall 12 b, and one end having left and right ends of the rear storage unit 15. It is composed of an extended back adjustment belt 37. A known annular buckle is attached to the other end of the belt main body 31, and the other end of the back adjustment belt 37 can be inserted into the annular buckle to adjust the length.

  As shown in FIGS. 7A and 7B, the back adjustment belt 37 is formed integrally with the back storage 15 in a shape in which the back storage 15 extends in the left-right direction from the rear side. . A waist abutment portion 37a, which is relatively wide in the vertical direction, is formed in a portion of the back adjustment belt 37 on the side of the back storage portion 15. The waist abutment portion 37a is provided at a position where the waist abuts against the user's waist while carrying the backpack, and is formed in a shape and size that wraps around the waist. A portion of the back adjustment belt 37 opposite to the back storage portion 15 is formed with a connecting portion 37b having a relatively narrow width in the vertical direction, and an end of the connecting portion 37b is formed in an annular buckle of the belt body 31. And the length of the shoulder belt 30 can be adjusted.

  As shown in FIG. 7 (b), small items are stored on the surface of the waist abutment portion 37a (here, the surface that does not contact the user's waist when carrying the backpack is referred to as the surface). A possible waist pocket 37c is provided. The waist pocket 37c has a shape that is closed on three sides in the front-rear direction and on the lower side, and is open upward.

Next, the operation of the backpack of the second embodiment will be described focusing on the differences from the backpack of the first embodiment.
In the backpack of the second embodiment, the shoulder belt 30 has a belt body 31 having one end joined to the upper end of the front wall 12b, and a back adjustment for one end extending from each of the left and right ends of the back storage unit 15. The belt 37 is configured. The back adjustment belt 37 is formed integrally with the back storage unit 15 in a shape in which the rear surface side of the back storage unit 15 is extended in the left-right direction. A waist abutment portion 37a that is wide in the vertical direction is formed.

  When the backpack is carried, the back storage portion 15 abuts against the curved concave portion of the back while maintaining its shape, and fits along the curved surface shape of the back. At this time, the waist abutment portion 37a which is wide in the up-down direction abuts around the waist of the user, and the waist abuts around the waist. Since the waist abutment portion 37a constituting the shoulder belt 30 acts so as to wrap around the curved concave portion of the back in conjunction with the back storage portion 15, the back storage portion 15 easily conforms to the curved shape of the back. Becomes stable.

According to the backpack of the second embodiment, the following effects can be obtained in addition to the effects (1) to (9) and (12) to (22).
(23) In the backpack of the present embodiment, the waist abutment portion 37a is formed on the back adjustment belt 37 that constitutes the shoulder belt 30, and the waist abutment portion 37a is used when the backpack is carried. It is in a state of wrapping around. Further, the back adjustment belt 37 is formed integrally with the back storage section 15, and a waist contact portion 37 a is formed at a portion of the back adjustment belt 37 on the side of the back storage section 15. For this reason, when carrying the backpack, the back storage portion 15 is drawn toward the back by the shoulder belt 30, and the front surface of the back storage portion 15 is easily adapted to the curved shape of the back. In addition, the waist abutment portion 37a is drawn to the waist by the belt body 31, and the back surface of the waist abutment portion 37a easily wraps around the waist. The back storage part 15 and the waist abutment part 37a work together to wrap around the curved concave part of the back. A backpack with excellent fit can be obtained. Further, since the back storage portion 15 and the waist contact portion 37a can cooperate to stabilize the position of the backpack, a good fit can be stably obtained.

  (24) The waist abutment portion 37a is provided with a waist pocket 37c that can store small items. Therefore, small articles can be taken in and out while carrying the backpack. Excellent storage and convenience.

  (25) In the backpack of the present embodiment, the shoulder belt 30 is constituted by the belt main body 31 and the back adjustment belt 37, and the length can be appropriately adjusted. Therefore, the length of the shoulder belt 30 is adjusted according to the user's physique, and the back storage part 15 is set to a position where the back storage part 15 fits the curved shape of the back, or the waist abutment part 37a is set to a position where the side part of the waist is wrapped. In this case, the shoulder belt 30 can be easily arranged along the back. Operability can be improved.

Each of the above embodiments can be modified as follows, and the above embodiments and the following modified examples can be applied in combination with each other within a technically consistent range.
In the above embodiments, as the locking structure for closing the lid 20, the locking part 23 provided on the lid 20 is engaged with the locked part 12e provided on the upper end of the front wall 12b. Although the locking structure is adopted, the location of the locked portion 12e is not limited to this. As shown in FIG. 8A, the locking portion 23 is provided at a position slightly closer to the base end than the distal end of the lid portion 20, and is locked with the locked portion 36 provided at the upper end portion of the belt main body 31. It may be. By providing the locking portion 23 and the locked portion 36 at this position, as shown in FIG. 8B, it becomes easy to hold the belt main body 31 so as to rise upward from the front wall 12b. Therefore, the shoulder belt 30 is easy to follow the back, and the fit is improved.

  In the above embodiments, the lid 20 is joined to the boundary between the bottom wall 11 and the rear wall 12a of the main body 10, but the joint of the lid 20 is not limited to this. For example, it may be joined to the outer surface of the bottom wall 11 or may be joined to the boundary between the bottom wall 11 and the front wall 12b. Further, it may be joined to the rear wall 12a or may be joined to the front wall 12b. For example, when the lid 20 is joined to the front wall 12b and the lid 20 is locked to the upper end of the front wall 12b to be fully closed, the lid 20 includes the front wall 12b, the bottom wall 11, and the rear wall. The opening 13 is closed while covering the opening 12a.

  The locking structure for locking the lid 20 to the front wall 12b of the main body 10 can be provided at one place as in the above embodiments, or at two places as shown in FIG. Or at three or more locations.

  In each of the above embodiments, the back storage part 15, the main body storage part 17, the side pocket 16, the lid pocket 22, and the waist pocket 37c are provided as parts for storing small items. In addition to the above, a storage unit, a pocket, and the like can be provided regardless of inside and outside of the main body unit 10. For example, as shown in FIG. 9, a shoulder belt storage section 34 may be provided on the surface of the belt main body 31 of the shoulder belt 30. The shoulder belt storage portion 34 may have a shape in which only the upper portion is opened, or may be provided with a fastener, a hook-and-loop fastener, a snap, or the like at any location so as to be able to be closed. By providing the shoulder belt storage section 34 in the belt main body 31, it is possible to take out small items even while the backpack is being carried. For example, if a coin purse, a commuter pass, a mobile phone, or the like is put in the shoulder belt storage unit 34, convenience is improved. The storability, operability, and convenience can be improved.

  The reinforcing portion 35 is inserted into a region extending from one end of the belt main body 31 to the upper end of the front wall 12b across the joint portion 31a between the belt main body 31 and the front wall 12b. The length of the reinforcing portion 35 is not particularly limited. If the belt body 31 is inserted across the joining portion 31a, it can be reinforced so that the belt main body 31 stands up. Further, the reinforcing portion 35 may be omitted.

  The upper part of the rear storage part 15 is formed as a slope having a larger amount of projection from the front wall 12b as going downward, and the lower part of the rear storage part 15 is formed as a slope having a larger amount of projection from the front wall 12b going upward. Although it is formed in a shape, the shape of the rear storage portion 15 is not limited to this. Neither the upper part nor the lower part may have a slope shape, and only one may have a slope shape. What is necessary is just to be provided in the position which contacts a curved concave part of a back when carrying a backpack.

  In the backpacks of the above embodiments, the back storage portion 15 has a hardness that does not cause the back storage portion 15 to be crushed when it is carried on a back, but is not limited thereto. The hardness may be reduced. Even in this case, if the crushed back storage portion 15 enters the curved back surface to conform to the curved back surface, the backpack is less likely to be tilted rearward, and the user is less likely to lean backward. It is unlikely to be pulled behind.

In addition, the rear storage unit 15 has a suitable flexibility, but may not have flexibility.
A fastener that extends in the left-right direction is attached to the upper part of the rear storage unit 15 so that small items can be stored in the rear storage unit 15. It is not limited to such a line fastener. It may be a hook-and-loop fastener or a snap. Moreover, it is not necessary to provide a fastener. In this case, for example, a snap or the like may be provided on the back surface side of the cover member 15c so that the cover member 15c can be stopped by the back storage unit 15.

  In the above embodiments, the fastener 15a and the handle 15b attached to the rear storage unit 15 are covered from above by the cover member 15c, and the cover member 15c is It is sewn to the upper edge of the upper slope. The present invention is not limited to this, and the cover member 15c may be sewn at the front edge to the lower edge of the upper sloped portion of the rear storage unit 15. Further, the cover member 15c may be omitted.

-The back storage part 15, the shoulder belt storage part 34, the main body storage part 17, the side pocket 16, the lid pocket 22, the waist pocket 37c and the like may be made detachable.
In the backpack of the first embodiment, a pair of right and left backrests 14 are provided on the upper outer surface of the front wall 12b, but the present invention is not limited to this. For example, the backrest 14 may be provided on the entire upper outer surface of the front wall 12b, or a member corresponding to the backrest may be attached to the front surface of the back storage part 15. Further, the backrest portion 14 can be omitted.

  The backrest portion 14 of the backpack of the first embodiment is formed in such a shape that the amount of forward protrusion increases toward the lower part of the front wall 12b, and is formed to protrude forward from the front wall 12b. It is not limited to. The amount of protrusion forward may be the same for the entire backrest portion 14, for example, the amount of protrusion in the middle portion in the vertical direction may be increased.

In the backpack of the second embodiment, the backrest 14 is not provided, but the backpack 14 may be provided in the same shape as the backpack of the first embodiment.
In the backpack of the first embodiment, the adjustment belt 32 of the shoulder belt 30 is joined to the lower end of the side wall 12c, but the joining position is not limited to this. It may be joined to the outer surface of the bottom wall 11, that is, the bottom of the main body 10. Further, it may be joined to the front wall 12b.

The shoulder body 33 of the belt body 31 of the shoulder belt 30 is provided, but this may be omitted.
A groove 14a is formed in the backrest portion 14, and a groove 33a is formed in the shoulder portion 33, so as to secure air permeability and fit when carrying the back. The shape of the grooves 14a and 33a is not limited to the groove shape, and the shape is not particularly limited. It is only necessary that the backrest 14 and the shoulder rest 33 have portions that do not come into contact with the user to ensure air permeability and fit, and that any recessed portion be formed. Further, the grooves 14a and 33a may be omitted.

  In the main body 10 of each of the above embodiments, the upper edge of the rear wall 12a is formed below the upper edge of the front wall 12b, and the upper edge of the side wall 12c is the left and right ends of the upper edge of the rear wall 12a. The main body 10 is not limited to a curved shape that is rounded and protrudes upward so as to connect between the portion and the left and right ends of the upper edge of the front wall 12b. The upper edge of the rear wall 12a and the upper edge of the front wall 12b may be at the same position, and the upper edge of the rear wall 12a may be higher than the upper edge of the front wall 12b. Further, the upper edge of the side wall 12c may not be curved.

  In the backpacks of the above embodiments, the upper edge of each side wall 12 of the main body 10 is the opening 13, but an opening may be provided in addition to the upper edge of the side wall 12. For example, when an opening that can be opened and closed with a fastener or the like is provided on the side wall 12c, an object can be taken in and out with the lid 20 closed.

  In the backpacks of the above embodiments, the urging members 25 extending in the length direction of the lid 20 are inserted into the left and right edges of the lid 20 so that the lid 20 is urged in the opening direction. I made it. The arrangement position, shape, size, and the like of the urging member 25 are not particularly limited. A rectangular plate-shaped urging member may be inserted inside the central part of the lid part 20, or a thin plate-shaped urging member may be inserted inside the central part. Alternatively, it may be attached to the outside of the lid 20. Further, the number of the urging members 25 is not particularly limited. It is not necessary to have two places, and it may be one place or three or more places.

  The urging member 25 in each of the above embodiments is made of a resin material, but the material is not particularly limited as long as it urges the lid 20 in the opening direction. It may be a thin metal material. Further, the urging member 25 can be omitted.

  In each of the above embodiments, the lid 20 is biased in the opening direction, and the biasing member 25 is inserted into the lid 20. However, the lid 20 is biased in the opening direction. It is not limited to this. For example, the cover 20 may be biased in the opening direction by adjusting the position of the shock absorbing portion 21 provided on the cover 20. As shown in FIG. 4A, since the shock absorbing portion 21 is formed thicker than other portions of the lid portion 20, the position of the shock absorbing portion 21 near the position above the belt fastener 24 is higher. If the cover 20 is not formed, the lid 20 is likely to bend toward the opening direction at the portion where the shock absorbing portion 21 is not formed. This makes it easier for the lid 20 to move in the opening direction when the locking of the lid 20 is released. Such a configuration can also be realized by adjusting the attachment position of the belt fastener 24.

-A hook capable of attaching a security buzzer or the like can be provided at a predetermined position of the backpack.
In the backpacks of the above embodiments, the back storage unit 15 and the main body storage unit 17 can be opened and closed by attaching a fastener extending from the upper part to the side part. The side pockets 16 and the waist pockets 37c have a shape that is closed in the front-rear direction and on the lower side, and is open upward. Further, the lid pocket 22 can be opened and closed by attaching a fastener 22 a extending in the width direction of the lid 20. However, the opening directions of the storage portions 15, 17 and the pockets 16, 22, 37c are not limited to this. For example, a configuration may be adopted in which a side is opened and objects are taken in and out.

  In the backpack of the second embodiment, the waist abutment portion 37a of the back adjustment belt 37 constituting the shoulder belt 30 has a shape in which the rear surface of the back storage portion 15 is integrally extended in the left-right direction. The position and shape of the waist abutment portion 37a are not limited to this. The front surface of the rear storage unit 15 may have a shape integrally extending in the left-right direction. Further, for example, as shown in FIG. 10, it may be formed of a front surface portion 37d integrally extending from the rear surface of the rear storage portion 15 and a rear surface portion 37e integrally extending from the front surface. In this case, for example, if the lower edges of the front surface portion 37d and the rear surface portion 37e are sewn and the upper edges are opened upward without sewing, the space between the front surface portion 37d and the rear surface portion 37e is used as a waist pocket. can do. Alternatively, as shown in FIG. 10, the upper surface 37f may be sewn between the upper edge of the front surface 37d and the upper edge of the back surface 37e, and an opening that can be opened and closed with a fastener may be formed in the upper surface 37f. Note that FIG. 10 shows a state in which the belt main body 31 is omitted so that the shape of the rear storage unit 15 can be easily understood.

  The waist abutment portions 37a of the backpack of the second embodiment are provided on both the left and right back adjustment belts 37, but may be provided on only one of them. In this case, in the back adjustment belt 37 in which the waist abutment part 37a is not provided, the connection part 37b is formed from the end on the back storage part 15 side. Further, both the waist contact portions 37a may be omitted. Even in this case, since the back adjustment belt 37 extends from the back storage section 15, the back storage section 15 and the back adjustment belt 37 are integrally linked, and the back storage section 15 is bent back. The backpack is easily drawn into the curved shape of the back.

  -The waist pocket 37c of the backpack of the second embodiment may be provided not only in both the left and right waist contact portions 37a but also in one of the left and right. Also, the waist pocket 37c can be omitted.

  DESCRIPTION OF SYMBOLS 10 ... Body part (storage main body), 11 ... Bottom wall, 12 ... Side wall, 12e ... Locked part, 13 ... Opening part, 14 ... Back rest part, 15 ... Back storage part, 15a ... Fastener, 15b ... Handle Part, 17: main body storage section, 18: storage section side adjustment belt, 20: lid section, 23: locking section, 24: belt fastener, 25: urging member, 30: shoulder belt, 31: belt body, 32 ... Adjustment belt, 33 ... Shoulder contact part, 34 ... Shoulder belt storage part, 35 ... Reinforcement part, 36 ... Locked part, 37 ... Adjustment belt, 37a ... Waist abutment part, 37c ... Waist pocket (waist storage) Part), 40...

Claims (5)

A storage body with an opening formed at the top,
A lid body capable of opening or closing the opening,
A backpack comprising a pair of shoulder belts for carrying,
On the rear side wall of the storage main body, a rear storage portion projecting from the rear side wall is provided.
The backpack, wherein the back storage portion is provided at a position where the back storage portion comes into contact with the curved concave portion of the back while carrying the backpack. The upper portion of the back storage portion is formed in a slope shape in which the amount of protrusion from the side surface on the back side increases as going downward,
The backpack according to claim 1, wherein a lower portion of the back storage portion is formed in a slope shape in which an amount of protrusion from the side surface on the back side increases as going upward. An opening configured to be opened and closed by a fastener is formed at an upper portion of the back storage unit,
The backpack according to claim 1 or 2, wherein the fastener and a handle portion thereof are covered by a cover member. The pair of shoulder belts are composed of a pair of belt bodies joined to an upper portion of the rear side wall, and a pair of adjustment belts extending from each of both widthwise ends of the rear storage unit,
One of the adjustment belts is connected to one of the belt main bodies,
The backpack according to any one of claims 1 to 3, wherein the other adjustment belt is connected to the other belt main body. At least one of the pair of adjustment belts has an end on the back storage portion side formed with a waist abutment portion that is relatively wider than the end on the shoulder belt side,
The backpack according to claim 4, wherein the waist contact portion is provided with a waist storage portion.