JP4573227B2 - The back of the shoulder bag - Google Patents

Description

  The present invention relates to a backrest for a shoulder bag such as a school bag or a rucksack.

  2. Description of the Related Art Conventionally, there is a back support in which a cushion material made of a foamed material such as a sponge is provided on a shoulder bag such as a school bag or a rucksack so as to soften a hit against a user's back.

  The back support of this type of conventional shoulder bag has a flat surface or a gently curved cushion so as to be entirely raised so as to come into contact with the user's back. .

Further, as shown in FIGS. 13 and 14, the conventional backrest of the shoulder bag has a substantially U-shape by disposing a substantially U-shaped cushion material 12 from both sides to the lower part of the back plate 11. It is raised so as to come into contact with the back of the user (Patent Document 1).
JP-A-6-269310 (FIGS. 1 and 3)

  However, although the conventional back support of the shoulder bag is in contact with the back of the user, it is generally raised or raised substantially in a U-shape. Since the contact position is not devised, the raised part is applied to the appropriate position on the user's back by applying an appropriate load, so the feel is not good or the part where the cushion material is not arranged It had the problem of touching the back and feeling pain.

  In addition, as described above, the backrest of the conventional shoulder bag is not necessarily in a vertical state when the bag is carried on the back, because the raised portion hits an appropriate position on the back of the user. In many cases, the center of gravity of the heel is separated from the back of the user, and the heel feels heavy.

  Therefore, the present invention solves the above-mentioned conventional problems, and examines the position and height of the backrest raised portion necessary for becoming a vertical state when the heel is carried on the basis of height. As a result, when the user carries the heel on his back, the heel will be in close contact with the back, feel good against the back, and the part where the cushioning material is not placed will not touch the back and may feel pain. It was made for the purpose of providing a back support that makes it easier to feel the heels on the back.

Therefore, the present invention provides a backrest for a shoulder bag having a raised portion P made of a cushioning material 6 at a portion that abuts against the backrest 1 of the shoulder bag when the user carries the shoulder. The moire pattern M is drawn on the back B of the user, and the left and right ridge lines L from the left and right scapula S of the back B to the lower part of the scapula S are obtained from the moire pattern M. The ridge line L is drawn on the back plate 4 of the backrest 1 so as to be positioned on the ridge line L, and the portion where the ridge line L of the back B abuts the raised portion P is measured according to the height of the user, It is assumed that the cushion material 6 is disposed in all the measured portions .

  Further, the back support of the backpack of the present invention was measured by a user having a height of 120 cm, 130 cm, 140 cm, and 150 cm at a portion where the backpack B is a school bag R and the ridge line L of the back B contacts the raised portion P. It is supposed to be.

  Further, the back support of the shoulder bag of the present invention is such that the height of the raised portion P of the back support 1 is about 1 cm at one band part a of the lower end of the attachment 3 of the shoulder belt 2 of the back support 1 and The shoulder belt of the backrest 1 is about 2 cm in a belt b 5 cm below the lower end of the attachment 3 of the shoulder belt 2, and is about 3 cm in the belt c 10 cm below the lower end of the attachment 3 of the shoulder strap 2 of the backrest 1. It is set to about 2 cm in a belt portion d 20 cm below the lower end of the second fixture 3.

  The back support of the shoulder bag of the present invention is configured as described above, so that when the user carries the bag, the bag comes in close contact with the back and feels good against the back. The non-arranged part does not come into contact with the back and feels no pain, so that the wrinkles carried on the back can be felt lightly.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the back support of the shoulder bag according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the back support of the shoulder bag according to the present invention is implemented, for example, as the back support 1 of the school bag R. The backrest 1 of the school bag R is attached to the upper part of the back plate 4 with the mounting tool 3 of the pair of shoulder belts 2 with the mounting part 3a facing upward from the school bag R. Therefore, the shoulder belt 2 attached to the attachment portion 3a of the fixture 3 is directed upward from the school bag R, and when the user carries the shoulder bag 2, the school bag R is always pulled obliquely upward. Since the belt 2 bends along the user's shoulder, the backrest 1 comes in close contact with the user's back.

  As shown in FIG. 2, the backrest 1 includes a back plate 4, an exterior fabric 5, and a cushion material 6. The back plate 4 is a rectangular plate made of a material having an appropriate rigidity, such as plastic or wood, and preferably having elasticity. The exterior fabric 5 is formed by bonding a non-woven fabric to the back of an artificial leather fabric made of a rectangular synthetic resin material or the like. The cushion material 6 is not limited as long as it is a preferable material for raising the backrest 1 to an appropriate shape such as sponge or cotton, but the illustrated material is a sponge. Even if this sponge is integrally molded, it can be made by collecting pieces that have been cut into pieces, or can be made by sandwiching other materials between them.

  The back support of the shoulder bag according to the present invention is such that when the user carries the bag, the left and right ridgelines L from the left and right shoulder blades S of the back B to the lower side of the shoulder blade S are the shoulder bags. It is assumed that a raised portion P made of the cushion material 6 is provided in a portion that comes into contact with the backrest 1 of the above.

  In order for the ridge line L of the back B to come into contact with the raised portion P formed by the cushion material 6, the position and height of the raised portion P in the backrest 1 are obtained from the following measurement results. did.

  First, the portion where the ridge line L of the back B abuts against the raised portion P is measured according to the height of the user, and the cushion material 6 is provided on all the measured portions. When the backpack is a school bag R, the portion where the ridge line L of the back B is in contact with the raised portion P is used with a height of 120 cm, 130 cm, 140 cm, and 150 cm in the growth process from the first grader to the sixth grader of the elementary school. Measured by a person.

  That is, as shown in FIGS. 3 to 6, the position of the raised portion P in the back pad 1 is drawn with a moire pattern M on the back B of a user having a height of 120 cm, 130 cm, 140 cm, and 150 cm, respectively. Further, the left and right ridge lines L from the left and right scapula S of the back B to the lower side of the scapula S are obtained. Then, as shown in FIG. 7, these ridge lines L are drawn on the back plate 4, and the cushion member 6 is disposed so as to be positioned on the ridge lines L so that the backrest 1 is raised. . The illustrated backrest 1 is provided with cushion materials 6 from above the ridge line L to both side ends and lower ends of the back plate 4, and without the cushion material 6 provided at the center portion sandwiched between the left and right ridge lines L. It was. If it does in this way, the contact area with the back | bag B will become large rather than arrange | positioning the cushioning material 6 only on the said ridgeline L, and stability when carrying a heel will increase more.

  7 indicates the ridgeline L of the user who is 120 cm tall, the broken line in FIG. 7 indicates the ridgeline L of the user who is 130 cm tall, and the one-dot chain line in FIG. 7 is the ridgeline of the user who is 140 cm tall. L indicates a ridgeline L of a user having a height of 150 cm.

  Next, as shown in FIGS. 8 to 11, the height of the raised portion P in the back support 1 is set so that the back plate 4 of the back support 1 is placed on the back B of a user having a height of 120 cm, 130 cm, 140 cm, and 150 cm. The distances D1 to D4 from the ridge line S of the back B to each part of the back plate 4 of the back pad 1 when measured vertically are determined. As shown in FIG. 12, the distances D1 to D4 are 5 cm below the lower end of the attachment 3 of the shoulder belt 2 of the backrest 1 and the lower end of the attachment 3 of the shoulder belt 2 of the backrest 1. The measurement was performed on one belt part b, one belt part 10 cm below the lower end of the attachment 3 of the shoulder belt 2 of the backrest 1, and one belt part 20 cm below the lower end of the attachment 3 of the shoulder belt 2 of the backrest 1.

  As a result of measuring these distances D1 to D4, at a height of 120 cm, the band a was 2.1 cm, the band b was 3.2 cm, the band c was 4.2 cm, and the band d was 1.0 cm. At a height of 130 cm, the band a was 0.7 cm, the band b was 1.7 cm, the band c was 2.9 cm, and the band d was 1.3 cm. At a height of 140 cm, the band a was 0.4 cm, the band b was 1.4 cm, the band c was 2.5 cm, and the band d was 3.2 cm. At a height of 150 cm, the band a was 0.4 cm, the band b was 1.4 cm, the band c was 2.5 cm, and the band d was 2.7 cm.

  Therefore, when these average values were obtained, it was 0.90 cm in one band part a, 1.93 cm in one band part b, 3.03 cm in one band part c, and 2.05 cm in one band part d. If the height is about 1 cm in the belt part a, about 2 cm in the belt part b, about 3 cm in the belt part c, and about 2 cm in the belt part d, the minimum school bag R will be tilted at each height when carrying the bag. That is, the thickness approaches vertical.

  Therefore, the backpack using the back support of the present invention is in a state of being nearly vertical when the back is carried, so that the back support 1 is in close contact with the back B and has a good feel against the back B, and the cushion material 6 The part where no is placed is not in contact with the back B, so that there is no feeling of pain, and the wrinkle carried on the back can be felt lightly.

It is a perspective view of the school bag using the back support of the shoulder bag of this invention. It is a partial cross section perspective view of the back support of the shoulder bag of this invention. It is explanatory drawing which drew the moire pattern of the back front of the user who is 120 cm tall who carries the backpack using the back support of this invention. It is explanatory drawing which drew the moire pattern of the back surface of the user of 130cm tall who carries the backpack using the back support of this invention. It is explanatory drawing which drew the moire pattern of the back front of the user with a height of 140cm carrying the backpack using the back rest of this invention. It is explanatory drawing which drew the moire pattern of the back front of the user of 150cm tall who carries the backpack using the back support of this invention. It is explanatory drawing which drew the ridgeline seen from the back front of the user 120-150 cm tall on the backplate of the backrest of this invention. It is explanatory drawing which shows the positional relationship of the backplate of the back support of this invention, and the ridgeline seen from the back side surface of the user who is 120 cm tall. It is explanatory drawing which shows the positional relationship of the back board of the back support of this invention, and the ridgeline seen from the back side surface of the user who is 130 cm tall. It is explanatory drawing which shows the positional relationship of the backplate of the backrest of this invention, and the ridgeline seen from the back side surface of the user with a height of 140 cm. It is explanatory drawing which shows the positional relationship of the backplate of the back support of this invention, and the ridgeline seen from the back side surface of the user who is 150 cm tall. It is explanatory drawing which shows each part of the back support which measures the distance from the ridgeline of a back to a back board when the back board of the back support of this invention is vertically applied to a user's back. It is a perspective view which shows a part of school bag using the back support of the conventional shoulder bag. It is a perspective view of the back support of the conventional shoulder bag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backrest 2 Shoulder belt 3 Attaching tool 6 Cushion material B Back L Ridge line P Raised part R School bag S Scapula a One part b One part c One part d One part

Claims (3)

A backrest of a shoulder bag having a raised portion (P) made of a cushion material (6) at a portion that contacts the backrest (1) of the shoulder bag when the user carries the shoulder, The moire pattern (M) is drawn on the user's back (B) with the position of the part (P). From the left and right shoulder blades (S) of the back (B) from the moire pattern (M), the shoulder blades (S) Find the left and right ridge lines (L) to the bottom, draw these ridge lines (L) on the back plate (4) of the backrest (1), and place them on the ridge lines (L), The portion where the ridge line (L) of the back (B) is in contact with the raised portion (P) is measured according to the height of the user, and the cushion material (6) is disposed on all the measured portions. A backpack of a carrying bag. The shoulder bag (R) is the shoulder bag (R), and the portion where the ridge line (L) of the back (B) abuts the raised portion (P) is measured by a user having a height of 120 cm, 130 cm, 140 cm, and 150 cm. The backrest of the shoulder bag according to claim 1 . The height of the raised portion (P) of the backrest (1) is about 1 cm at the lower end (1) of the lower end of the fixture (3) of the shoulder belt (2) of the backrest (1). ) Shoulder belt (2) 's shoulder strap (2) 5cm below the lower end of the belt (2), about 2cm, backrest (1) shoulder belt (2) lower end of the fixture (3) 10cm below The band (c) is approximately 3 cm, and the band (d) is 20 cm below the lower end of the attachment (3) of the shoulder belt (2) of the backrest (1). 2. Back support of the shoulder bag according to 2 .

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