JP4128211B1 - Backboard bag backboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a back plate for a shoulder bag which has good air permeability and conforms to the shape of the back and widely distributes the load of the bag.
SOLUTION: A substrate 1, a pedestal portion 2 provided on the upper surface of the substrate 1, a plurality of convex portions 3a provided on the upper surface of the pedestal portion 2, and a concave portion 3b formed between the convex portions 3a, A groove-shaped main air flow path 4 formed in the center vertical direction of the substrate 1 and dividing the pedestal portion 2 to the left and right, the groove-shaped main air flow path 4 being opened up and down, On both the left and right sides of the path 4, convex portions 3a are arranged in rows in the vertical direction. Since the concave portion 3b serves as a right and left air flow path and communicates with the groove-shaped main air flow path 4 formed in the central vertical direction, ventilation in the vertical and horizontal directions of the back plate is ensured, and stuffiness can be reduced. it can. Moreover, since the convex part 3a is arrange | positioned at the right-and-left both sides of the main air flow path 4 provided in the center of the board | substrate 1, the load of a shoulder bag is disperse | distributed to right and left, and a back comfort is also favorable.
[Selection] Figure 1

Description

  The present invention relates to a back plate used for a shoulder bag such as a school bag.

  In order to improve the feel of the back when carrying the back, the back plate made of an elastic material may be provided on the part that touches the back of the backpack, and a representative having such a configuration. A typical example is a school bag. The school bag has been used as a school bag for elementary school students, and although its basic shape remains the same, improvements have been made to each part, making it more comfortable to use. In particular, recent school bags have been improved variously in the shape of the metal fittings, etc., the degree of adhesion between the school bag and the back is increased, and it is very easy to carry. However, on the other hand, the increase in the adhesion degree deteriorates the air permeability, and the occurrence of stuffiness due to sweat becomes a problem.

Therefore, in order to reduce the stuffiness between the school bag and the back, the present applicant has proposed the invention of Document 1. In this case, a sweat-absorbing sheet is provided on the back plate of the school bag, and a number of ventilation holes are provided on the surface. In addition, the idea of Document 2 has been proposed. This is because a rectangular or circular sponge body is placed between the core material of the back plate and the outer skin at an appropriate interval so that a large number of gaps are formed in the vertical direction and the horizontal direction. It improves air permeability.
JP-A-9-173121 Utility Model Registration No. 3087262

  However, the invention of Document 1 mainly reduces the stuffiness by devising the material of the back plate. The shape of the back plate is sufficient to have only one passage-shaped recess, and air circulation is sufficient. It wasn't. Further, the device of Document 2 is not compatible with the shape of the back because a sponge body having the same height is provided at the center and the left and right of the back plate. That is, when this school bag is actually carried, only the central sponge body is in contact with the back, and there is a concern that the load of the school bag is concentrated on that portion.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a back plate for a backpack that has good breathability, conforms to the shape of the back, and widely disperses the load on the back.

According to the first aspect of the present invention, there is provided a substrate used in a portion contacting the back of the shoulder bag, a pedestal portion provided to cover a majority of the outer surface of the substrate, and a plurality of pedestal portions provided on the outer surface of the pedestal portion. includes a protrusion that is, a recess is formed between the convex portions, a main air flow path groove shaped to divide the formed in the center vertical direction of the substrate and the pedestal on the left and right, and said pedestal and the convex portion is made of a cushioning material having elasticity, said have been opened to the main air flow path and below the groove, the left and right sides of the main air flow path and said recess and said protrusion The concave and convex rows are alternately arranged in the vertical direction, and the concave and convex rows are respectively arranged on the left and right sides of the main air flow path, and are formed in the vertical direction between the left and right concave and convex rows. In the adjacent concavo-convex rows, the vertical position of each convex portion is Of the concavo-convex rows, the height of the convex portion constituting the outer row is higher than the height of the convex portion constituting the inner row, and the shape of the convex portion is narrower than the base portion. is formed, the base portion, the convex portion, the concave portion, provided with the main air flow path and the auxiliary air passage sheet surface material covering the entire surface of the characterized Rukoto. The substrate is a flat plate, and all other components are provided on the outer surface of the substrate. Here, the outer surface refers to a surface on the side in contact with the back. The substrate has a pedestal having a certain height in the majority . And the some convex part is provided in the outer surface of a base part. The shape of the convex portion may be any of a rectangular parallelepiped shape, a hemispherical shape, a cylindrical shape, a truncated cone shape, a shape that spreads from the top to the base of the convex portion, or a combination of these shapes. good, since the portion in contact with the back and the convex portion is not circulated air, the area of the top (i.e., the area of the portion contacting the back) more is small rather better Nozomu, further, the top relative to the base is narrower It is desirable that This is because the cross-sectional area of the air channel is increased, the amount of air flow is increased, and the effect of reducing stuffiness is increased. In addition, the shape and size of each convex portion may be the same or different. Further, the convex portions are arranged in a plurality of rows in the vertical direction, and concave portions are formed between the convex portions. A plurality of such uneven rows are arranged on the left and right sides . Therefore, there are two or more concavo-convex rows on the left and right, and a total of four or more rows, and the number of convex portions is at least eight or more on the entire back plate, and any number may be used as long as the condition is satisfied. In addition, in the adjacent uneven | corrugated row | line | columns, it is desirable that the position of the up-down direction of each convex part is staggered. That it is staggered means that the vertical positions of the convex portions are not aligned. Moreover, the height of the convex part which comprises an outer side row | line is higher than the height of the convex part which comprises an inner side row | line | column among the said several rows of convex parts. This means that the height of the convex portion gradually increases from the inner one to the outer one. Here, the outer side refers to the peripheral side of the back plate, and the inner side refers to the central main air flow path side. For example, when the concavo-convex rows are arranged in two rows on the left and right, the height of the outer convex portion is higher than the height of the inner convex portion, and there are two types of convex portions. In addition, when three rows of concavo-convex rows are arranged on the left and right, the height of the outermost convex portion is the highest, then the height of the central convex portion is high, the height of the innermost convex portion is the lowest, There will be three types of heights. Of course, it is desirable that the convex portions at the left and right symmetrical positions have the same height. Moreover, you may have the convex part which remove | deviated from the row | line | column other than the said uneven | corrugated row | line | column. In addition, it is desirable that these pedestal portions, convex portions, and concave portions are arranged symmetrically. The main air channel is formed between the pedestal portions arranged on the left and right sides in a groove shape without the pedestal portion and the convex portion. In other words, no convex portion is formed on the central axis in the vertical direction of the back plate. Therefore, convex parts are not formed above and below the main air flow path, and the main air flow path opens up and down, so that air circulation is not hindered. Note that an elastic member having a thickness that does not hinder the air flow may be provided in the main air flow path to soften the touch when touched. Even in this case, the thickness of the elastic member does not exceed the height of the pedestal portion, and the height of the concave portion (that is, the height of the pedestal portion) is the height of the main air flow path (that is, the thickness of the elastic member). ). Further, the auxiliary air flow path is formed as a portion where there is no convex portion between the rows as a result of the arrangement of the uneven rows on the right and left sides. Therefore, when the concavo-convex rows are arranged in two rows on the left and right, one sub-air channel is formed on the left and right, and when the concavo-convex rows are arranged on three rows on the left and right, the sub-air channels are on the left and right Two are formed. As with the main air flow path, it is desirable that the sub air flow path be opened up and down. Further, as a material for the substrate, in order to maintain the shape of the back plate, a material that is hard to some extent and lightweight is desirable. For example, polypropylene or the like is used. On the other hand, the convex part directly touches the user's back and plays the role of a cushioning material that softens the impact, so it is desirable that the convex part is elastic and has a good feel. At that time, the convex portion is crushed by the load of the eyelids. As a material satisfying this condition, for example, polyurethane or the like is used. Further, the pedestal portion may be formed of the same material as the convex portion, or may be formed of a different material. If formed of the same material, it may be one formed on one body from the beginning, respectively or may be bonded by adhesive or the like that is formed separately. On the other hand, when formed of different materials, the pedestal part and the convex part are formed separately, and these may be joined with an adhesive or the like, or provided with irregularities corresponding to the pedestal part and the convex part. May be. In this case, for example, polyurethane is used as the material of the pedestal portion, and polyurethane having a different degree of foaming is used as the material of the convex portion. Furthermore, the substrate, the base portion, protrusions, recesses, the main air flow path and auxiliary air flow path, the surface is covered with the surface material, as the material for the surface material, artificial leather or the like is used. Among them, those having high air permeability and moisture permeability are desirable, and a large number of holes may be provided to improve the air permeability and moisture permeability.

In the invention of claim 2, the surface material is in contact with only the top portion of the convex portion except that the surface material is sewn and fixed to the substrate at the peripheral edge portion of the substrate and the edge of the main air flow path. The part is characterized by being in a floating state with no contact. In other words, this is a state where the surface material is stretched from the top to the top of the adjacent convex portions.

According to the first aspect of the present invention, the plurality of convex portions form a line in the vertical direction, and a concave portion is formed between the convex portions, and the concave portion serves as an air flow path in the left-right direction. . This recess communicates with a groove-shaped main air flow path formed in the central vertical direction, and the main air flow path is opened up and down, so that ventilation in the vertical and horizontal directions of the back plate is ensured, Can reduce stuffiness. Moreover, since the main air flow path is provided in the center of the back plate and the convex portions are arranged on both the left and right sides thereof, the load on the backpack is distributed to the left and right, and the comfort on the back is also good. In particular, in the present invention, by arranging a plurality of convex portions on each of the left and right sides and providing a sub-air flow path between the concavo-convex rows, the air permeability in the vertical and horizontal directions is improved, and the load on the shoulder bag is further increased. Can be dispersed in a wide range. Moreover, in the adjacent uneven | corrugated row | line | column, the air flow path which faced diagonally upward is formed by making the position of the up-down direction of each convex part alternate. Since the air warmed by the body temperature rises, the hot air is discharged more efficiently, and the effect of preventing stuffiness is improved. Furthermore, by making the height of the outer convex part higher than the height of the inner convex part, the back plate fits the shape of the user's back, and the load applied to each convex part of the shoulder bag is wider. Can be dispersed. Moreover, since the top part is narrowly formed with respect to the base part, the cross-sectional area of the air flow path is increased, the amount of air flow is increased, and the effect of reducing stuffiness is enhanced. Furthermore , by providing a convex portion on the upper surface of the pedestal portion, the cushioning effect is increased by increasing the thickness of the cushioning material while ensuring air permeability. Increasing the height of the convex part also increases the thickness of the cushioning material, but if the convex part is increased, it will be easily damaged by impact, etc., so a pedestal part with a certain height is provided over a wide area, The configuration of the present invention in which a convex portion is provided on the upper surface is desirable. Further, by forming the base portion and the convex portion of the same material, it can be inexpensive to cost of materials, particularly, when molding the base portion and the convex portion to one body, even complex shape by the mold It can be formed easily. On the other hand, if the pedestal part and the convex part are formed of different materials, it is possible to variously adjust the back comfort by combining the materials.

According to the second aspect of the present invention, the uneven shape of the pedestal part, the convex part, and the concave part is covered and hidden, and only the top part of the convex part is raised, and a clean and preferable appearance with a gentle waveform is obtained. In addition, it seems that almost all of the surface material comes into contact with the user's back because the unevenness in appearance is reduced, and it seems that the air permeability that is the object of the present invention cannot be secured, Since only the portion where the convex portion exists is applied with a load and is in close contact with the back, and the other portion is only touching the back without applying a load, the air permeability of the portion is ensured without any problem.

  The specific structure of the backboard for backpacks of the present invention will be described based on the drawings. FIG. 1 is a perspective view of a back plate for a saddle bag, which shows a cross section by cutting a part thereof. FIG. 2 shows the shape of each part. (A) is a front view, (b) is a cross-sectional view taken along the line AA, (c) is a cross-sectional view taken along the line BB, and (d) is a cross-sectional view taken along the line CC. Line sectional view, (e) is a DD line sectional view, (f) is a bottom view. In addition, a present Example is a back plate for school bags.

The substrate 1 is a flat plate made of polypropylene, and its shape depends on the type of ridge, but since this embodiment is a back plate for a school bag, it has a rectangular shape that matches the back surface of the school bag. A pedestal 2 made of polyurethane is formed on the upper surface of the substrate 1. The pedestal portion 2 is provided at a constant height over the entire region excluding a range of about ¼ on the upper side of the substrate 1 (upper side in FIG. 2A). However, a groove-shaped main air flow path 4 is provided in the central vertical direction, and the pedestal 2 is divided into left and right. Further, on the upper surface of the base portion 2, the convex portion 3a is formed on one body and pedestal 2, between the convex portions 3a recess 3b is formed. Convex portion 3a, without the diverging shape toward the base from the top, the top is rounded, it is three aligned columns in the vertical direction are arranged one by two rows on the left and right. Here, the inner convex portion 3 a is referred to as an inner convex portion 31, and the outer convex portion 3 a is referred to as an outer convex portion 32. Further, an upper convex portion 33 is formed above the inner convex portion 31 and the outer convex portion 32, and a lower convex portion 34 is formed below the outer convex portion 32. Here, the height of each part is 10 mm for the pedestal 2 (height from the surface of the substrate 1), 5 mm for the inner convex part 31 (height from the surface of the pedestal part 2, hereinafter the same), and the outer convex part 32. Is 10 mm, the upper convex portion 33 is 5 mm, and the lower convex portion 34 is 10 mm. A gap between the inner convex portion 31 and the outer convex portion 32 becomes the auxiliary air flow path 8. However, in the present embodiment, the upper convex portion 33 is disposed above the sub air flow path 8, and the sub air flow path 8 is opened only downward. The upper side of the substrate 1 where the pedestal portion 2 is not formed becomes a flat portion 6 on which a metal fitting for attaching a shoulder belt is provided. In addition, the structure which consists only of the board | substrate 1 may be sufficient as the plane part 6, However, It is good also as a structure by which the layer lower than the base part 2 which consists of polyurethane on the upper surface of the board | substrate 1 is provided. And the surface of these base part 2, the convex part 3a, the recessed part 3b, the main air flow path 4, the sub air flow path 8, and the plane part 6 is covered with the surface material 5 which consists of artificial leather. The surface material 5 is sewn and fixed to the substrate 1 at the peripheral edge of the main back plate and the edge of the main air flow path 4 (seam 7), and is crimped to the entire surface of the main back plate. It is provided along the unevenness of the convex portion 3a and the concave portion 3b.

FIG. 3 is a perspective view of the school bag 10 including the back plate of the present embodiment. By configuring the back plate as described above, air flows in the vertical direction by the main air flow path 4 and the sub air flow path 8, and by the concave portions 3b between the adjacent convex portions 3a in the same row, Since air flows in the left-right direction, high air permeability is secured, and stuffiness when carried on the back is reduced. Furthermore, since the outer convex part 32 is formed higher than the inner convex part 31, it fits the shape of the back of the user, and the load of the school bag is distributed to both the inner convex part 31 and the outer convex part 32. Moreover, by providing the base part 2 and providing the convex part 3a on the upper surface thereof, the thickness of the cushioning material is increased and the cushioning effect is increased while ensuring air permeability. Moreover, forms a base portion 2 and the convex portion 3a of the same material, it can be inexpensive to cost of materials, in particular, since the base portion 2 and the convex portions 3a are formed on one body, The mold can be easily manufactured.

FIG. 4 shows the shape of each part of the second embodiment of the back plate for the shoulder bag, (a) is a front view, (b) is a cross-sectional view taken along the line EE, and (c) is a line FF. Sectional drawing, (d) is a sectional view taken along line GG, (e) is a sectional view taken along line HH, and (f) is a bottom view. The substrate 1 made of polypropylene, the pedestal portion 2 made of polyurethane, and the main air flow path 4 are the same as those in the first embodiment, and the flat portion 6 is made only of the substrate 1. And about the convex part 3a (the inner side convex part 31, the outer side convex part 32, the upper side convex part 33, the lower side convex part 34), although the arrangement | positioning is the same as 1st Example, the number of the inner side convex parts 31 is the same. The material is made of polyurethane having a different degree of foaming from the pedestal 2 and is bonded to the upper surface of the pedestal 2 with an adhesive. Among the convex portions 3a, the inner convex portion 31 and the outer convex portion 32 are hemispherical, and the outer convex portion 32 has a higher height. Moreover, the upper side convex part 33 and the lower side convex part 34 are the shapes which divided the cylinder into the halves with the central axis. And the surface of these base part 2, the convex part 3a, the main air flow path 4, and the plane part 6 is covered with the surface material 5 which consists of artificial leather. The surface material 5 is in contact with only the top portion of the convex portion 3a except for being sewn and fixed to the substrate 1 at the peripheral edge portion of the main plate and the edge of the main air flow path 4 (seam 7). In this part, there is nothing to touch and it is in a floating state.

When the back plate to this structure, the base unit 2, is obscured uneven shape of the convex portion 3a and the recesses 3b, only the top portion of the convex portion 3a is stands out, a neat pleasing appearance of gentle waveform. In addition, it seems that almost all the surface material 5 comes into contact with the back of the user because the unevenness is reduced in appearance, and it seems that the air permeability that is the object of the present invention cannot be ensured. Since only the portion where the convex portion 3a exists and the other portion only touches the back without applying a load, the air permeability of the portion is ensured without any problem. The same effect as the first embodiment can be obtained. Moreover, since the convex part 3a consists of a polyurethane with a low foaming degree harder than the polyurethane which comprises the base part 2, even when the load of a shoulder bag is large and strongly pressed on a back, the convex part 3a is completely crushed. And air permeability is ensured. In addition, if the base part 2 and the convex part 3a are formed with different materials in this way, it is possible to variously adjust the back comfort by combining the materials.

FIGS. 5A and 5B show the shape of the third embodiment of the back plate for the shoulder bag, where FIG. 5A is a front view, FIG. 5B is a cross-sectional view along line JJ, and FIG. 5C is a cross-sectional view along line KK. , (D) is a sectional view taken on line LL, and (e) is a bottom view. The substrate 1 made of polypropylene, the pedestal 2, the main air flow path 4, and the plane 6 are the same as those in the first embodiment. And the convex part 3a which consists of polyurethane is formed in the upper surface of the base part 2 of the both sides of the main air flow path 4. As shown in FIG. Convex portion 3a, without the diverging shape toward the base from the top, the top is rounded, it is three aligned columns in the vertical direction are arranged one by two rows on the left and right. As in the first embodiment, the inner convex portion 3 a is the inner convex portion 31, the outer convex portion 3 a is the outer convex portion 32, and the outer convex portion 32 is formed higher than the inner convex portion 31. Between the inner convex part 31 and the outer convex part 32, the sub air flow path 8 which divides the base part 2 into right and left is formed, and the sub air flow path 8 is opened up and down. And the surface of these convex parts 3a (inner convex part 31, outer convex part 32), the main air flow path 4, the sub air flow path 8, and the plane part 6 is covered with the surface material 5 which consists of artificial leather. The face material 5 is sewn and fixed to the substrate 1 at the peripheral edge of the main back plate, the edge of the main air flow path 4 and the sub air flow path 8 (stitch 7), and is crimped to the entire surface of the main back plate. And provided along the unevenness of the pedestal 2, the convex 3a, and the concave 3b.

  Next, the results of a comparative experiment with the conventional one for the air permeability of the school bag provided with the backboard for a bag of the present invention are shown. This experiment compares the conventional school bag 20 having a back plate having a single raised portion 21 shown in FIG. 6 with the school bag 10 having the back plate of the present invention shown in FIG. A 3 kg weight was placed in the school bag, and each was placed on the back of a heater, and air was blown from the back while heating. Blowing is performed in the order of 10 minutes in the no wind condition, 10 minutes in the 0.2 m / s blowing period, 10 minutes in the 2.0 m / s blowing period, and 10 minutes in the no wind condition. The temperature was measured. In addition, the wind speed of 2.0 m / s is an average measurement value in the outdoors, and assumes a state in which a child carries a school bag on the back when she goes to school. FIG. 7 is a graph showing the results. As for the conventional product, the temperature rises with the start of the experiment, and the temperature hardly changes even after blowing. This is probably because the raised portion 21 is in close contact with the heater (back) and air does not circulate. On the other hand, for the present invention, in the absence of the original wind, the temperature rises as in the conventional product, but after that, only 0.2 m / s of air is blown, the temperature drops by about 5 ° C., and the wind becomes stronger. In this case, the temperature further decreases. This is because the air is circulated in the vertical and horizontal directions and the heat is released by providing the concave portion and the air flow path, and it is considered that the effect of reducing the stuffiness is much higher than that of the conventional product. In an actual outdoor environment, there is almost no complete windless state, and air can be circulated just by walking while carrying the back. Therefore, the back plate of the present invention can always comfortably carry a backpack.

  In addition, the backboard for backpacks of this invention is not limited to the said Example. The number, arrangement, shape, size, and the like of the convex portions can be freely set within a range of conditions.

The perspective view which notched a part of the back board for shoulder bags of this invention. The front view, sectional drawing, and bottom view of a back plate for a bag. The perspective view of a school bag provided with the back board for backpacks. The front view, sectional drawing, and bottom view which notched a part of 2nd Example of the back board for backpacks. The front view, sectional drawing, and bottom view of the third embodiment of the back plate for the bag. The perspective view of the school bag provided with the backplate for the conventional backpack used for the comparison experiment. The graph which shows the result of the temperature experiment about the back board for backpacks.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Base part 3a Convex part 3b Concave part 4 Main air flow path 8 Sub air flow path

Claims (2)

A substrate (1) used for a portion in contact with the back of the shoulder bag, a pedestal portion (2) provided to cover the majority of the outer surface of the substrate (1), and a plurality of pedestals on the outer surface of the pedestal portion (2) provided that the convex portion and (3a), left and right recesses (3b) which is formed between the convex portions (3a), the central vertically formed and the pedestal portion of the substrate (1) and (2) A groove-shaped main air flow path (4) that is divided into
The pedestal portion (2) and the convex portion (3a) are made of an elastic cushioning material, and the groove-shaped main air flow path (4) is opened up and down, and the main air flow path (4) The left and right sides of the protrusions (3a) and the recesses (3b) are alternately arranged in the vertical direction to form a concavo-convex row,
The uneven columns, the main air flow path (4) are respectively a plurality of rows arranged on the left and right, with the sub-air passage (8) formed in the vertical direction between the uneven columns between the left and right, of the in the adjacent uneven rows together, Ri is alternately der vertical position of the respective convex portions (3a), among the concavo-convex column, protruding portion constituting the outer row height (3a) constitutes an inner row convex portions (3a) of rather higher than the height, the convex part shape (3a), are formed narrow top relative to the base,
Sheet-like surface material (5) covering the entire surface of the pedestal part (2), the convex part (3a), the concave part (3b), the main air flow path (4) and the sub air flow path (8). A backboard for a bag with a back. The convex portion (3a) except that the surface material (5) is sewn and fixed to the substrate (1) at the peripheral edge of the substrate (1) and the edge of the main air flow path (4). The back plate for a shoulder bag according to claim 1, wherein the back plate is in a floating state in contact with only the top portion of the base plate and without contact with other portions.

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