JPH0642485Y2 - Back ring for backpacks such as school bags - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back ring for a backpack such as a backpack, which is attached to the backrest of a backpack such as a backpack and connects the upper end of a backpack belt.

[0002]

2. Description of the Related Art Conventionally, the upper end portion of the backpack belt is connected to a back ring connecting metal fitting, and the connecting metal fitting cannot move. Therefore, the distance between the upper end portions of the pair of backpack belts is constant. Therefore, there is a problem that when the school children grow up and the shoulder width becomes wider, the intervals between the backpack belts are too narrow to be cramped.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a back ring for a backpack such as a backpack which can increase or decrease the distance between a pair of backpack belts and can accommodate a difference in shoulder width of a user.

[0004]

In order to achieve the above object, the back ring for a backpack bag such as a school bag of the present invention is a connection for rotatably connecting the upper ends of a pair of backpack belts 1 and 2. The rods 3 and 4 are provided on the left and right to connect the rods 3 and 4 to each other.
The length of the back straps 1 and 2 is set to be slightly longer than the width of the connecting ends 5 and 6, and the upper ends of the back straps 1 and 2 are connected to the connecting rods 3 and 4 of the back strap body 7. The connecting rods 3 and 4 are provided with detachable spacers 8 and 9 which have substantially the same length as the margins generated in the connecting rods 3 and 4 and are connected to each other. is there.

[0005]

Operation: The connection ends 5, 6 of the backpack belts 1, 2 are moved toward the inner ends of the connecting rods 3, 4 of the back ring body 7 and are generated at the positions of the outer ends of the connecting rods 3, 4. If spacers 8 and 9 are attached to the allowances, respectively, the backpack belts 1 and 2 are fixed in a narrow space, and conversely, the connecting ends 5 and 6 of the backpack belts 1 and 2 are connected to the connecting rod portion of the back ring body 7. If the spacers 8 and 9 are moved to the marginal portions formed near the inner ends of the connecting rods 3 and 4 by moving them toward the outer ends of 3 and 4, the backpack belts 1 and 2 are fixed with a wide interval. To be done.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described below. First, one metal rod is bent in such a manner that the whole is approximately an isosceles triangle and the ring portion 10 is formed at the apex angle portion thereof to form one triangular annular body 11, and the triangular annular body is formed. 11
The bottom side 12 of the triangular looped body 11 is rotatably attached to a mounting plate 13 fixed to the backrest of a backpack such as a school bag, and the left and right hypotenuses of the triangular annular body 11 are rotated around the upper ends of the pair of backpack belts 1 and 2, respectively. The connecting rods 3 and 4 for movably connecting are provided, and the lengths of the connecting rods 3 and 4 are set to be slightly longer than the widths of the connecting ends 5 and 6 of the backpack belts 1 and 2. Ring part 10
The back ring main body 7 having the hanging part as a suspension part is configured. Next, a set of spacers 8 and 9 is formed separately from the back ring main body 7. The spacers 8 and 9 have a cylindrical shape made of plastic, and their lengths are generated in the connecting rods 3 and 4 in a state where the upper ends of the backpack belts 1 and 2 are connected to the connecting rods 3 and 4 of the back ring body 7. The length of the center hole 14 is set to be substantially the same as that of the margin portion, and the inner diameter of the center hole 14 is set to be slightly larger than the outer diameter of the connecting rods 3 and 4 of the back ring body 7, and the connecting rod is connected to a part of its side surface. It has a configuration in which a split groove 15 having a width slightly smaller than the outer diameter of the portions 3 and 4 is formed. This spacer 8 expands the width of the split groove 15 by elastic deformation and inserts the connecting rods 3 and 4 into the center hole 14 between them to insert the connecting rods 3 and 4 into the central rod 14 and thereby It can be fitted around it and can be detached from the connecting rods 3, 4 by performing the reverse operation.

As shown in FIG. 3, the connecting ends 5 and 6 of the backpack belts 1 and 2 are moved toward the inner ends of the connecting rods 3 and 4 of the back ring main body 7 to move the connecting rods 3 and 4 to the outside. If the spacers 8 and 9 are fitted in the margins formed near the ends, the connecting ends 5 and 6 of the backpack belts 1 and 2 become immovable to the outside, and the distance between the backpack belts 1 and 2 is reduced. Is fixed in a narrow state. On the contrary, as shown in FIG. 4, the connection ends 5 and 6 of the backpack belts 1 and 2 are moved toward the outer ends of the connecting rods 3 and 4 of the back ring main body 7 to move the inner ends of the connecting rods 3 and 4. If the spacers 8 and 9 are moved to the margins formed at the near positions, the backpack belts 1 and 2 cannot be moved inward, and the backpack belts 1 and 2 are fixed in a wide space.

[0008]

[Effects of the Invention] The present invention is as described above, and since the distance between a pair of backpack belts can be easily expanded or reduced, the versatility that it can be used according to the difference in shoulder width is obtained. There is.

[Brief description of drawings]

FIG. 1 is a perspective view of a state in which the bag is attached to a school bag.

FIG. 2 is a perspective view of a spacer alone.

FIG. 3 is a front view showing a state in which the intervals between the backpack belts are narrowed.

FIG. 4 is a front view showing a state in which the intervals between the backpack belts are widened.

[Explanation of symbols]

 1 backpack belt 2 backpack belt 3 connecting rod portion 4 connecting rod portion 5 connecting end portion 6 connecting end portion 7 back ring body 8 spacer 9 spacer 10 ring portion 11 triangular ring body 12 bottom portion 13 mounting plate 14 center hole 15 split groove

Claims (1)

[Scope of utility model registration request] 1. A pair of connecting rods 3 and 4 for rotatably connecting the upper ends of a pair of backpack belts 1 and 2 are provided on the left and right, and the length of the connecting rods 3 and 4 is set to the backpack belt 1. Back ring body 7 set to be slightly longer than the width of the connection ends 5 and 6 of
And the connecting rods 3 and 4 of the back ring main body 7 are connected to the connecting rods 3 and 4 at the upper ends of the backpack belts 1 and 2 and have substantially the same length as a margin portion generated in the connecting rods 3 and 4. A back ring for a backpack such as a school bag which has removable spacers 8 and 9 in the margins of the parts 3 and 4.