JP3138960U - Backpack for school bag - Google Patents

Abstract

The present invention provides an inexpensive and easy-to-manufacture back belt to be attached to a school bag.
A cushioning function is formed on a lower surface of a belt core member 16 integrally formed by expanding a protection portion 18 made of the same material and having a cushioning function at both side edges of a shoulder shoulder part 17 formed of a foamed resin material. A pad portion 20 formed of a foamed resin material having a base material is bonded, and the back portion 15 is formed by covering the pad portion and the belt core material 16 with a protective cover material 22 made of a soft leather material. The surface material 24 made of a hard leather material is polymerized on the upper surface where the adjustment piece for adjusting the length is integrally bonded, and the peripheral portion of the surface material 24 excluding the protective portion 18 of the back piece 15 is sewn. It is integrally formed.
[Selection] Figure 2

Description

  The present invention relates to an improvement in a backpack for school bags used by schoolchildren.

  Traditionally, school bags used by elementary school students are quite heavy to accommodate textbooks, supplementary materials, and gymnastics, especially for first-year to third-year-old students who carry heavy school bags. It is a considerable burden.

  On the other hand, the back belt attached to the school bag is formed by integrally forming a back piece on which the shoulder portion of the schoolchild abuts and a length adjusting piece for adjusting the length of the back belt below the back piece. The shoulder belt and a short lower belt having one end connected to the bottom surface of the school bag are detachably connected. The length is adjusted by inserting an arbitrary hole provided in the adjustment piece of the back belt and a claw portion of a locking metal fitting attached to the lower belt into the hole.

  The back piece is bonded to a belt core material formed of a hard resin material or a foamed resin material, and a pad portion formed of a foamed resin material having cushioning properties on the lower surface of the belt core material. And the belt core material is covered with a protective cover material formed of a flexible leather material, and the adjustment piece is a cover layer formed of a cosmetic resin material with a thin core made of a foamed resin material. The belt body is formed by joining the adjusting piece and the back piece together, and the upper surface of the belt body is polymerized with a surface material formed of a hard leather material, and the peripheral portion is sewn with a sewing thread. What is formed is known.

  The weight of the backpack is mostly concentrated on the lower surface of the backpack of the backpack belt, and even if a cushion layer is provided inside, the cushion layer becomes thinner due to aging and the weight of the backpack is on the shoulder. Since the surface material provided on the surface of the back belt is made of a hard leather material, if the school bag is new, both side edge portions of the surface material hit the neck of the schoolchild who carries the school bag.

  In particular, when going to and going to school with a school bag on your back, you may be joking or running with your friends, so the school bag will sway from side to side, and the edge of the surface material located on the shoulder of the shoulder belt will be the neck and shoulders of school children. You may be rubbed and scratched.

Therefore, as shown in FIG. 10, in order to prevent schoolchildren from being injured by the edge of the surface material forming the backpack belt, the backpack belt 60 is a weave formed by sewing a belt body 64 formed of hard leather material on the surface. A cloth-like back belt band 62 is covered with a bag-like belt body 63 formed by a front-side belt body 65, a cushion material 66, and a back-side belt body 67, and the bag-like belt body 63 and the woven cloth back-band belt body 62 are sewn together. The one formed by wearing is known (see Patent Document 1).
JP-A-10-80311

Furthermore, as shown in FIG. 11, the shoulder belt 70 covers a cushioning material 72 made of a cushion material inside with a back skin 73, and ends of both end portions of the back skin 73 are folded back to the upper surface side to provide a cushioning material 72. A base portion 75 is formed to wrap both sides of the first and second ends of the reflection band 74 on both sides, and an end portion of the reflection band 74 is inserted into the base portion to attach a skin 77 to the surface of the cushioning material 72, Both side portions of the outer skin and the back skin 73 are integrally sewn along the peripheral edge of the belt 70 on the back. The reflection band 88 is known to protrude outwardly from both sides of the backpack portion of the backpack and to be attached so as to stand out in the front and side directions (see Patent Document 2).
JP-A-8-220995

  As described above, the woven cloth back belt band 62 constituting the backpack 60 for school bags shown in FIG. 10 has the bag-shaped band body 63 composed of the back surface belt body 67 and the front side belt body 65 on the outer periphery of the back cloth belt body made of woven cloth. Although it covers and sews, it functions as a cushion. However, since the leather band 64 is not visible on the surface of the backpack belt, it is difficult to use a normal school bag as a backpack belt. Also in the manufacturing process of the backpack 60, after the cloth back strap 62 and the leather strip 64 are sewn, the bag belt 63 is put on and then sewn with the woven cloth back strap 62, and the bag is further formed. There are many processes such as attaching both ends of the belt 63 in the longitudinal direction, which is inefficient.

  The back belt 70 shown in FIG. 11 has reflection bands 74 protruding outward on both sides, but this reflection band 74 does not have a function of protecting the corners of the skin 77, and both side portions of the belt. The purpose of this is to prevent traffic accidents by providing a reflective band that is conspicuous in color, and it does not have a function to prevent injuries such as shoulders and necks of school children.

  The problem to be solved by the present invention is that even if a schoolchild of a lower grade carries a heavy school bag on his back, he / she does not get tired easily. By providing a backpack belt that can be safely and lightly carried without being damaged, and improving work efficiency and reducing costs by using parts with stable quality and low yield in the backpack belt manufacturing process. The object is to provide a high-quality backpack belt.

  In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a pad portion 20 made of a foamed resin material having a cushioning property is bonded to the lower surface of a belt core material 16 formed in a wide and band shape, A back layer 15 formed by covering the belt core 16 with a protective cover material 22 formed of a soft leather material, and a cover layer made of a cosmetic leather material with a core portion made of a foamed resin material formed in a thin band shape. The adjustment piece 30 formed so as to be covered is joined to each other, and a belt-like surface material 24 made of a hard leather material is polymerized on the adjustment piece and the upper surface of the backpack piece 15, and the peripheral portion of the surface material is sewn. In the backpack belt 13 for a school bag formed integrally, the belt core 16 is a protective material having a cushion function made of the same material on both side edges of a wide shoulder band 17 made of a foamed resin material. 18 is characterized in that integrally formed. In addition, the belt core member 36 bulges from the surface of the shoulder abutment 37 above the upper surface of the shoulder abutment 37 at both side edges of the wide shoulder abutment 37 that is gently curved as a whole and has a cushion function. And a flat portion 39 in which the bottom surface of the protection portion and the bottom surface of the shoulder abutment portion 37 are flush with each other. Further, the belt core member 46 bulges a protective portion 48 having a cushion function higher than the upper surface of the shoulder abutment portion on both side edges of a wide shoulder strip 47 which is gently and horizontally curved in the horizontal direction. Further, a thick reinforcing portion 49 is integrally formed in the longitudinal direction on both sides of the upper surface of the shoulder abutment portion 47 via a concave neck portion 50, and is formed on the bottom surface and both side edges of the shoulder abutment portion 47. The present invention is characterized in that it is formed by providing a flat portion 51 in which the lower surface of the provided protective portion 48 is coplanar. Furthermore, the protective portions 18, 38, 48 formed on both side edges of the back piece 15 are positioned on both outer sides of the surface material 24 that is superposed on the upper surface of the back piece, and the periphery of the surface material and the back piece 15 and the adjustment piece 30 are integrally formed by sewing.

  Therefore, the shoulder part of the belt core material, which is a component of the back belt, and the protective part are integrally formed, thereby preventing the occurrence of defective parts by omitting the step of bonding the shoulder part and the protective part. A high-quality backpack belt can be provided by improving quality and reducing costs.

  The invention of claim 5 has a cushioning function formed on the both side edges of the shoulder portion 47 formed in a wide and belt-like shape, which is gently curved in the horizontal direction, and formed in a cross-sectional columnar shape higher than the surface of the shoulder portion. A thick reinforcing portion 49 is integrally formed at the center in the longitudinal direction via a protective neck 48 and concave neck portions 50 provided on both sides of the upper surface of the shoulder portion, and further, on the bottom surface and both side edges of the shoulder portion 47. The flat portion 51 of the belt core material 46 made of the foamed resin material formed by providing the flat portion 51 on the same plane as the lower surface of the provided protective portion 48 had a cushion function that was also formed in a band shape from the foamed resin material. The pad portion 20 is bonded, and the pad portion 20 and the belt core material 46 are covered with a protective cover material 22 made of a soft leather material, below the back piece 15 and a plurality of back length belts are adjusted. Left the hole 33 The upper part of the adjustment piece 30 provided at intervals is bonded, and the belt-like surface material 24 made of a hard leather material is superposed on the entire upper surface excluding the adjustment piece and the protection part 48 of the backpack piece 15, A backpack for a school bag, wherein the backpack 15 and the adjustment piece 30 are sewn together and formed integrally.

  Therefore, by forming the shoulder part and the protective part of the belt core material, which is a component of the backpack belt, integrally, the process of bonding the shoulder part and the protective part is omitted, thereby preventing the occurrence of defective parts and improving the quality. By improving and reducing costs, a high-quality backpack belt and a school that carries a school bag on the back can be safely secured without damaging the neck and shoulders at the edge of the backpack belt, and it can be carried comfortably with little burden on the shoulder it can.

    The embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a school bag to which a shoulder belt according to the present invention is attached, FIG. 2 is a plan view of the shoulder belt, and FIG. Sectional drawing and FIG. 4 are the principal parts disassembled perspective views of a backpack belt. The backpack 13 is formed by bonding a wide backpiece 15 that hits the shoulder when the backpack is carried and a narrow adjustment piece 30 that adjusts the length of the backpack, and attaching the adjustment piece to the upper surface of the backpack 15. A surface material 24 made of a hard leather sparse material is sewn and formed integrally.

  The back belt 13 is attached to the school bag 10 with a lower belt 41 in which the upper end of the back piece 15 is connected to the back ring 12 attached to the upper center of the back plate 11 and the other end is connected to the bottom surface of the school bag 10. The length is adjustable. The length of the backpack 13 is adjusted by adjusting a plurality of holes 33 provided at appropriate intervals in the adjustment piece 30 and a claw portion 43 of a locking fitting 42 provided at the end of the lower belt 41. The length of the shoulder belt 13 can be adjusted by engaging with any one of the holes 33 provided in the belt 30.

  The back piece 15 of the back belt 13 is a belt core material 16, 36, 46 formed of a foamed resin material such as polyurethane or polyethylene, and has a cushion function attached to the lower surface of the belt core material, for example, a sponge material. The pad portion 20 is formed, and a protective cover material 22 made of a soft leather material, such as natural leather or synthetic leather, covering the pad portion and the belt core materials 16, 36, 46.

  A first belt core material 16 shown in FIGS. 3 and 4 as a first embodiment of the belt core material is a cushioning function made of the same material on both side edges of a shoulder portion 17 formed by slightly curving the entire longitudinal direction according to the shoulder width. A protective portion 18 having a cylindrical shape with a cross section is integrally formed. The shape of the protective portion 18 is not limited to a cylindrical shape as long as the shape bulges upward from the upper surface of the shoulder abutment portion 17 and may be a prismatic shape or a triangular prism shape.

  As described above, in the conventional belt core material, the shoulder abutment portion and the protection portion are formed separately, and a process of adhering the shoulder abutment portion and the protection portion with an adhesive is necessary. In this bonding process, since the bonded portion between the shoulder abutment portion and the protective portion is thin and long, it is difficult to bond uniformly, the product is not easily uniformed, and the work efficiency is poor. Therefore, the present invention integrally forms the shoulder portion 17 and the protective portion 18 constituting the belt core material 16, thereby eliminating the need for the bonding process and improving product uniformity (quality stability) and productivity. Moreover, the weight of the product can be reduced and the cost can be reduced by eliminating the need for an adhesive.

  As a second embodiment of the belt core material, as shown in FIGS. 5 and 6, the second belt core material 36 has both side edges of a shoulder portion 37 formed by slightly curving the entire longitudinal direction in the horizontal direction in accordance with the shoulder width. A protective portion 38 having a cushioning function is integrally formed by bulging upward from the surface of the shoulder abutment portion 37, and the bottom surface of the shoulder abutment portion 37 is the same as the lower surface of the protection portion 38 provided on both side edges. A flat portion 39 formed in a plane is provided. By providing the flat portion 39 on the bottom surface of the second belt core material 36, it is easy to process and stable product production is possible.

  Further, as shown in FIGS. 7 and 8, as a third embodiment of the belt core material, the third belt core material 46 is formed in a wide and flat shape formed by slightly curving the entire longitudinal direction in accordance with the shoulder width in the horizontal direction. A protective portion 48 having a cushion function is formed on both side edges of the shoulder abutment portion 47 so as to bulge upward from the surface of the shoulder abutment portion 37 and integrally formed with a reinforcing portion 49 formed thick in the upper surface longitudinal direction. A flat portion 51 is formed by forming a recessed neck portion 50 at the boundary between the reinforcing portion and the protective portion, and making the bottom surface of the shoulder abutment portion 47 and the lower surface of the protective portion 48 provided on both side edges the same plane. It is provided.

  The third belt core member 46 is formed by integrally forming a thick reinforcing portion 49 on the upper surface of the shoulder abutment portion 47, so that it can be prevented from being deformed due to secular change of the back load piece constituting the back load belt, and the bottom surface is By providing the flat portion 51 on the same plane, it is possible to manufacture products that are easy to process and stable.

  The pad portion 20 is formed by forming a flat upper surface of a sponge formed of a foamed resin material having a cushion function, such as polyurethane or polyethylene, and forming a lower surface in a gentle arc shape, and the belt core materials 16, 36, 46. It is formed in a belt shape similar to the shoulder abutment portions 17, 37, 47.

  The protective cover material 22 is made of a soft leather material such as natural leather or synthetic leather, and forms a marginal portion 23 for sewing with a sewing thread 25 on both sides in the width direction. Cover the protective portions 18 and 38 on both sides of the belt core from the lower side of the pad portion 20 adhered to the lower surfaces of the belt core materials 16 and 36, and then fold it back to the upper surface side. It is formed in a size where 23 is located. The protective cover material 22 used for the third belt core member 46 is formed in such a size that the margin 23 of the protective cover material covers the upper surface of the shoulder portion 47 to the inclined surface 49 a of the reinforcing portion 49.

  Reference numeral 24 denotes a surface material formed in a band shape from hard synthetic leather or natural leather, and has an overall shape similar to the shape obtained by joining the back piece 15 and the adjusting piece 30 together. The surface material 24 is superposed on the surfaces of the joined back piece 15 and the adjusting piece 30 except for the protective portions 18, 38, and 48, and the back piece 15 and the adjusting piece 30 are joined along the peripheral portion of the surface material 24. They are integrally formed by sewing with a sewing thread 26.

  As shown in FIG. 2, the adjusting piece 30 covers a core portion (not shown) made of a foamed resin material that is thin and formed into a strip shape, with a cover material 32 formed of a soft cosmetic leather material, and has a central axial direction. A plurality of holes 33 are provided at appropriate intervals, and the upper end of the adjusting piece is bonded to the lower end of the backpack piece 15 to be integrally formed.

  Hereinafter, the operation of the embodiment of the present invention will be described. When the back belt 13 is formed using the first belt core member 16, a cushion function is provided on the lower surface of the shoulder portion 17 provided at the center of the first belt core member 16. The pad portion 20 is bonded, and then the pad portion 20 and the first belt core material 16 are wrapped with a protective cover material 22 formed of a soft leather material, and the marginal portion 23 of the protective cover material is Fold it over the surface. Further, a surface material 24 formed of a hard leather material is bonded to the upper surface of the back piece 15 excluding the protection portion 18 and the upper surface of the adjustment piece 30, and the periphery of the surface material, the back piece 15 and the adjustment piece 30 are sewn together. And integrally formed. Since the protection part 18 of the first belt core member 16 is located at the outer edge of the surface material 24 and covers and protects the edge part of the surface material 24, the edge part of the surface material 24 hits the neck and causes pain. There is no risk of damage or scratching.

  When the back belt 13 is formed using the second belt core material 36, the pad portion 20 having a cushion function is bonded to the lower surface of the second belt core material 36, and then the second belt core material 36 and the pad The portion 20 is wrapped with a protective cover material 22 formed of a flexible leather material, and the marginal portion 23 of the protective cover material is folded back to the surface of the shoulder abutment portion 37 to form a backpack piece 15, and the lower end of the backpack piece is adjusted. The upper ends of the pieces are bonded together to form a single piece.

  Further, the surface material 24 formed of a hard leather material is bonded to the upper surface of the back piece 15 excluding the protection portion 38 of the back piece 15 and the upper surface of the adjustment piece 30 on the upper surface of the integrally formed back piece 15 and the adjustment piece. The peripheral edge of the surface material, the back piece 15 and the adjustment piece 30 are sewn together and formed integrally. The protective portion 38 of the second belt core member 36 bulges on the outer edge of the surface material 24 to protect the edge portion of the surface material 24, so that the edge portion of the surface material 24 hits the neck and causes pain. There is no risk of damage or scratching.

  Since the back belt 13 formed using the third belt core material 46 is provided with the flat portion 51 on the lower surface of the third belt core material 46, the bonding work of the pad portion 20 having the cushion function is easy. Can be streamlined. Next, the pad portion 20 and the third belt core member 46 are wrapped with a protective cover material 22 formed of a soft leather material, and the marginal portion 23 of the protective cover material is folded upward to be provided on the upper surface of the shoulder portion 47. The back piece 15 is formed on the inclined surface 49 a of the reinforcing portion 49. The lower end of the back piece 15 and the upper end of the adjustment piece 30 are bonded together to form a single piece. By forming the margin 23 on the inclined surface 49a, the protective cover material 22 is not likely to be broken even if the back belt is deteriorated due to aging.

  Further, the surface material 24 formed of a hard leather material is bonded to the upper surface of the back piece 15 excluding the protective portion 48 and the upper surface of the adjustment piece 30, and the peripheral third belt core material 46 of the back piece 15 at the periphery of the surface material. Since the edge portion of the surface material 24 is protected by the protective portion 48 that bulges on the outer edge of the backpack piece, the neck portion and the body of the school children are protected by the edge portion. There is no risk of scratching. Further, by providing the reinforcing portion 49 on the upper surface of the shoulder abutment portion 47 of the third belt core member 46, it is possible to prevent the back piece 15 from being broken or out of shape.

  The first, second, and third belt core members 16, 36, and 46 are formed by integrally forming the protective portions 18, 38, and 48 on both sides of the shoulder portions 17, 37, and 47, respectively. To provide an inexpensive and economical backpack that can reduce the yield of the product and improve the work process because the process of bonding the shoulder abutment part and the protective part can be omitted. Can do.

It is a front view which shows the use condition which attached the shoulder belt to the school bag. It is a top view of the backpack belt concerning the present invention. FIG. 3 is an AA enlarged end view of FIG. 2. FIG. 3 is an exploded perspective view in which the shoulder belt shown in FIG. 2 is partially broken. It is a top view of the 2nd belt core material. FIG. 6 is an enlarged cross-sectional view taken along line BB in FIG. 5. It is a top view of the 3rd belt core material. FIG. 8 is an enlarged cross-sectional view taken along the line CC of FIG. It is sectional drawing of the backpack piece which uses a 3rd belt core material. It is a center cross-sectional view of the conventional backpack belt. It is a center cross-sectional view of another conventional backpack belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 School bag 13 Back belt 15 Back piece 16 1st belt core material 17 Shoulder contact part 18 Protection part 20 Pad part 22 Protection cover material 24 Surface material 25 Sewing thread 30 Adjustment piece 33 Hole 36 2nd belt core material 37 Shoulder contact part 38 Protection part 39 Flat part 46 Third belt core material 47 Shoulder contact part 48 Protection part 49 Reinforcement part 50 Flat part 51 Flat part

Claims (5)

A pad portion (20) formed of a foamed resin material having cushioning properties is bonded to the lower surface of a wide belt-shaped belt core material (16), and the pad portion and the belt core material (16) are flexible. A back cover piece (15) formed by covering with a protective cover material (22) formed of a leather material, and a core portion made of a foamed resin material formed in a thin and belt-like shape is covered with a cover layer made of a cosmetic leather material. The adjustment piece (30) is joined to each other, and a band-shaped surface material (24) made of a hard leather material is polymerized on the upper surface of the adjustment piece and the backpack piece (15). In the backpack (13) for a school bag formed integrally by sewing,
The belt core material (16) is formed by integrally forming a protective portion (18) having a cushion function with the same material on both side edges of a wide shoulder band portion (17) made of a foamed resin material. Backpack belt for school bags.   The belt core material (36) is formed on the shoulder edges (37) having a wide and belt-like shape which is gently curved as a whole, and the upper ends of the protection portions (38) having a cushion function are formed on the shoulder edges (37). A flat portion (39) is formed by bulging upward from the upper surface and integrally forming the bottom surface of the protection portion and the bottom surface of the shoulder contact portion (37). The backpack for school bags according to Item 1.   The belt core member (46) is provided with a protection portion (48) having a cushion function on the both side edges of the shoulder portion (47) formed in a wide and belt-like shape, which is gently curved in the horizontal direction, from the upper surface of the shoulder portion. A thick reinforcing portion (49) is integrally formed in the longitudinal direction on both sides of the upper surface of the shoulder abutment portion (47) through a concave neck portion (50), and is integrally formed in the longitudinal direction. 2. The backpack for a satchel according to claim 1, wherein a flat portion (51) is provided in which the bottom surface of the shoulder abutment portion (47) and the lower surface of the protection portion (48) provided on both side edges are coplanar. .   Protective portions (18, 38, 48) formed on both side edges of the backpack piece (15) are positioned outside both ends of the surface material (24) that is superposed on the upper surface of the backpack piece, The backpack for a school bag according to any one of claims 1 to 3, wherein the back piece (15) and the adjustment piece (30) are integrally formed by sewing.   A protective portion (48) having a cushion function formed in a columnar cross section formed on the both side edges of the shoulder support portion (47) formed in a wide and belt-like shape, which is gently curved in the horizontal direction, and higher than the upper surface of the shoulder contact portion. A thick reinforcing portion (49) is integrally formed at the center in the longitudinal direction via concave neck portions (50) provided on both sides of the upper surface of the shoulder portion, and the bottom surface of the shoulder portion (47) The lower surface of the protective portion (48) provided on both side edges and the flat portion (51) of the belt core material (46) made of the foamed resin material formed by providing the flat portion (51) on the same plane are similarly foamed resin. A pad portion (20) having a cushion function formed in a band shape is bonded to the material, and the pad portion (20) and the belt core material (46) are covered with a protective cover material (22) made of a soft leather material. The back of the back piece (15) The upper surface of the adjustment piece (30) provided with a plurality of holes (33) for adjusting the length of the belt is bonded to the upper end, and the entire upper surface excluding the adjustment piece and the protective portion (48) of the back piece (15). A belt-shaped surface material (24) made of a hard leather material is polymerized, and a peripheral edge of the surface material, a back piece (15), and an adjustment piece (30) are respectively sewn and integrally formed. Backpack for school bags.

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