JPH0119870Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an improvement of the back ring of backpacks such as school bags and backpacks.

``Prior Art'' The most common type of conventional back ring for backpacks of this type is explained above based on FIG.

Cylindrical parts 1a, 1a are arranged on the folded upper side of the substantially bifold metal fitting main body 1, and one side of a right triangular ring 2 is inserted into these cylinder parts 1a, 1a.
Wrap the ends of the backpack belts B' and B' around the oblique sides of the belt and secure them. This metal fitting body 1 has a rivet hole 1.
It is fixed to the bag main body fabric (also not shown) with studs (not shown) passing through b, 1b, and a cover fabric 3 is superimposed on the surface of the metal fitting main body 1, and this cover fabric 3 is sewn to the bag main body at seams 4. It will be worn.

``Problems to be Solved by the Invention'' However, the back ring of the conventional backpack described above requires two processes: riveting the metal fitting body 1 and sewing the covering fabric 3, and also The ends of the backpack belts B' and B' must be wrapped and fixed, respectively, which complicates the bag manufacturing process.

In addition, the seam 4 where the covering fabric 3 is sewn makes the bag body fabric susceptible to damage, and has the drawback that an accident may occur in which the inner part of the bag body fabric falls off at the seam 4. .

Furthermore, the biggest drawback of the conventional backpack straps of this type of backpack is that the backpack belts B', B' are detachable, and cannot be replaced by a general user when they are damaged.

Therefore, the present invention was developed in view of the above-mentioned drawbacks, and it does not reduce the strength of the fabric of the bag body and can be easily attached to the bag body.Furthermore, it is easy to put on and take off, allowing the user to replace the backpack belt or replace the backpack belt. The purpose of this invention is to provide a back ring for a backpack that can be used for both a backpack and a shoulder bag by changing the connection location.

``Means for Solving the Problems'' In line with the above-mentioned purpose, the structure of the present invention, which is summarized in the above-mentioned utility model registration claims, is designed to solve the above-mentioned problems. The first bearing part 12 is attached to the back side, and the fixing feet 11, 11,
11... are provided protrudingly, and the first bearing portion 12 has an inverted trapezoidal ring 20.
The ring 20 is pivotally connected at its upper side, and furthermore, an uneven part 20b' is provided on the inside of both oblique sides 20b, 20b of the ring 20, and a pair of second bearing parts 21 are provided on the upper side of the ring 20. , 21 are integrally provided on the side opposite to the fixing substrate 10 side, and the second bearing portions 21, 21
The upper end of a lid 40 whose lower end 40a extends above the lower side 20a of the ring 20 is pivotally attached to the upper end of the lid 40, and the lid 40 is attached to both oblique sides 20b of the ring 20,
hypotenuses 40b, 40b having a predetermined distance from 20b;
A technical measure is taken to form the trapezoid into an inverted trapezoidal shape.

``Function'' Therefore, the back ring of the backpack of this invention has one fixing leg.
1, 11, 11... are fixed to the bag body by passing through the fabric of the bag body, the backpack belt B is folded in half at its center, and after passing this bifold part through the ring 20, The bifold portion of the belt B is unfolded, the lid 40 is inserted into it, and the backpack belt B is pulled to both sides to stretch the bifold portion and flatten it. Then, the backpack belt B will pass from under one oblique side 20b of the ring 20, over the lid 40, and under the other oblique side 20b, as shown by the dashed line in FIG. The force is a force that pushes down the lid 40 (towards the fixing substrate 10 side) and pushes the ring 20 up (pushing it in the direction opposite to the fixing substrate 10 when viewed from the ring 20), but at this time, the lower end of the lid 49 40a is the lower side 20 of the ring 20
This lid 40 extends above the lid 40.
The lower end 40a of the ring 20 is pressed against and fixed to the ring 20.

Therefore, in the above state, the backpack belt B is attached to the bag body fabric M with its central portion held between the oblique sides 20b, 20b of the ring 20 and the oblique sides 40b, 40b of the lid 40.

To attach and detach this shoulder belt B,
The above procedure can be performed in reverse.

It should be noted that if the ring 20 and the lid 40 are shifted vertically relative to each other in the state shown in FIG. is the lid 40 is the ring 20
Since the lid 40 is pivotally connected to the ring 20, even when the ring 20 pivots, the lid 40 always moves together with the ring 20, and there is no displacement between the two.
The uneven portions 20b' provided on the inside of the belts 20b and 20b also function to prevent the backpack belt B from slipping off.

``Example'' Next, an example of the present invention will be described below with reference to FIGS. 1 to 4.

In the figure, reference numeral 10 denotes a fixing board fixed to the fabric of the bag main body, and a first bearing part 12 is arranged on the upper end of the front side, and fixing feet 11, 11,
11... are installed protrudingly. This fixing substrate 10 may have any desired shape, but if the shape is slightly smaller than the ring 20 described later, the fixing substrate 10
is accommodated in the ring 20, and it is preferable that the fixing substrate 10 is formed into a flat plate shape and the first bearing portion 12 is formed to protrude from the center of the upper side of the fixing substrate 10, since the entire structure can be made thin.

In addition, in order to fix the fixing substrate 10 to the bag body fabric, as shown in FIG. 3, the bag body fabric M
, the fixing legs 11, 11, 11... of the fixing base plate 10 are passed through the bag body fabric M, and the tips of the fixing legs 11, 11, 11... are brought into contact with the seat plate. Holes 51, 51, 51 arranged in 50...
It is designed to be press-fitted inside. In the illustrated example, locking claws 52 are provided to protrude inside the holes 51, 51, 51, respectively, and the locking claws 52
are fixing legs 11, 11, 1 that are press-fitted by engaging with recesses (not shown) arranged on the circumferential surface of each fixing leg 11.
1... is designed so that it does not fall off easily.

The upper side of an inverted trapezoidal ring 20 is pivotally attached to the first bearing part 12, and uneven parts 20b' are provided on the inner sides of both oblique sides 20b, 20b of this ring 20, respectively. This ring 20 is open at the center of the upper side and has shaft portions 22, 22 protruding from both ends.
2 and 22 are inserted into the first bearing portion 12, so that the ring 20 is pivotally supported on the fixing base plate 10.

Further, a pair of second bearing parts 21, 21 are integrally provided on the upper side of the ring 20 on the side opposite to the fixing substrate 10 side, and the second bearing parts 21, 21 have a lower end 40a. The upper end of a lid 40 extending above the lower side 20a of the ring 20 is pivoted. As most clearly shown in FIG.
1', respectively, and a shaft hole 21'' is bored in both of the protruding parts 21', 21'.Furthermore, opposing shaft parts 41, 41 are provided on the upper side of the lid 40, and this shaft part 41 , 41 are inserted into both shaft holes 21'', and the lid 40 is pivoted to the ring 20.
The lid 40 is located above and below the ring 20 (at the back and front in FIG. 1), and its lower end 40
A is arranged so as to overlap the upper surface of the ring 20. Note that the lower end 40a of the lid 40 is located on the inside (fixing board 10
direction) so as to wrap approximately half the circumference of the outer surface of the ring 20.

Furthermore, the lid 40 has both oblique sides 20b of the ring 20,
hypotenuses 40b, 40b having a predetermined distance from 20b;
It is formed into an inverted trapezoidal shape. This predetermined distance is approximately equal to the thickness of the backpack belt B.

FIG. 4 shows an example in which the back ring of the backpack according to the present invention is used as a backpack/shoulder bag. A pair of rings 53 are also arranged on the bottom surface 52. A back ring is fixed to the center of the upper rear surface of the bag body 50, and connectors 54, 54 which can be attached to and detached from the rings 51, 53 are attached to both ends of the backpack belt B1.
(Although the illustrated example uses what is called an eggplant ring as this connector, it goes without saying that various conventionally known detachable connectors can be used.) In the state shown in FIG. 4, the backpack belt B1 is used as a backpack by connecting both end connectors 54, 54 to a pair of rings 53 on the bottom surface 52, and locking the center portion to the back ring of the present invention. However, both the connectors 54, 54 of the backpack belt B1 are connected to the rings 53,
53, then remove the backpack belt B1 from the back ring of the present invention using the procedure described above, and simply engage the connectors 54, 54 of the backpack belt B1 with the rings 51, 51, and the bag body 50 can be removed. It can also be used as a shoulder bag.

[Effect of the invention] The present invention is as described above, and since the fixing board 10 is fixed by the fixing legs 11, 11, 11, etc., and the entire part is almost covered with the lid 40, it is difficult to sew the conventional cover fabric. This eliminates the need for a back ring for a backpack that is easy to attach and does not reduce the strength of the bag body fabric M due to seams. In particular, the present invention uses a single connected backpack belt B instead of the conventional pair of backpack belts B' and B' when connecting the backpack belt B to the bag body fabric M, and connects the center of the belt to the top of the lid 40. Since it is only necessary to pass the bag through the lid 40 and clamp it between the lid 40 and the ring 20, this has the effect of significantly reducing the manufacturing process of the bag.

In addition, in the present invention, since the backpack belt B is detachable, the user can easily replace it if the backpack belt B is damaged, and the backpack belt B is configured as one piece. Therefore, it is possible to provide a back ring for a backpack that can be changed from a backpack to a shoulder bag by replacing the backpack belt B.

Furthermore, as a noteworthy effect of the present invention, since the lid 40 is pivotally attached to the ring 20, even if the ring 20 pivots, the lid 40 always moves together with the ring 20, and the lid 40 and the ring 20 move together. Since the positional relationship with the ring 20 does not shift, the backpack belt B always remains held between the ring 20 and the lid 40, and further, the uneven portion 2
0b' also increases the frictional resistance of the backpack belt B, so that it is possible to provide a back ring of the backpack that prevents the backpack belt B from slipping down in the narrow direction of the lid 40.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the back ring of the backpack of the present invention, Fig. 2 is an exploded perspective view of parts, Fig. 3 is a longitudinal cross-sectional view, and Fig. 4 is a cross-sectional view of the back ring of the backpack of the present invention. A perspective view of an example in use, and FIG. 5 is a front view of a conventional example. 10-Fixing board, 11-Fixing foot, 12-First bearing part, 20-Ring, 20a-Lower side, 20b-
Oblique side, 21~second bearing part, 40~lid, 40a~
Lower end, 40b ~ hypotenuse.

Claims (1)

[Claims for Utility Model Registration] A first bearing portion 12 is provided on the upper end of the front side of the fixing board 10, and fixing feet 11, 11, 11, etc. are provided protruding from the back side of the fixing substrate 10, and the first bearing portion 12 is provided with: Inverted trapezoidal ring 20
The ring 20 is pivotally connected at its upper side, and furthermore, an uneven part 20b' is provided on the inside of both oblique sides 20b, 20b of the ring 20, and a pair of second bearing parts 21 are provided on the upper side of the ring 20. , 21 are integrally provided on the side opposite to the fixing substrate 10 side, and the second bearing portions 21, 21
The upper end of a lid 40 whose lower end 40a extends above the lower side 20a of the ring 20 is pivotally attached to the upper end of the lid 40, and the lid 40 is attached to both oblique sides 20b of the ring 20,
hypotenuses 40b, 40b having a predetermined distance from 20b;
A back ring of a backpack formed into an inverted trapezoid shape.