JP7017798B2 - Belt angle limiting device, backpack belt, backrest, and school bag - Google Patents

Description

An embodiment of the present invention relates to a belt angle control technique for maintaining the posture of a backpack belt provided on a school bag.

The school bag is hung on both shoulders by passing the user's arm through a pair of left and right backpack belts attached in a ring shape from the upper end to the lower end of the back plate surface of the school bag. The upper end of the backpack belt is fixed to the back iron (second) which is fixed in surface contact with the upper end portion of the back plate portion.
In recent years, in order to reduce the feeling that the school bag on the back hangs down and feels heavy, the one in which the structure of the backpack is devised so that the upper part of the backpack belt is slightly raised upward has become widespread.

Japanese Unexamined Patent Publication No. 2016-214593 Japanese Unexamined Patent Publication No. 2017-12349

One method of holding the upper end of the backrest belt while it is raised upward is to hold the backrest upright along the surface of the back plate.
At the same time, in order to store the school bag more compactly at the time of shipment or storage in a locker, it is also necessary to be able to release the upright state and tilt it back and forth when necessary.

The present invention has been made in consideration of such circumstances, and is a belt angle limiting device, a backpack belt, which can maintain the upright state of the rising portion of the backpack belt when carrying it on the back and can tilt the sword forward or backward when necessary. The purpose is to provide a belt and a school bag.

The belt angle limiting device according to the present embodiment is a belt angle limiting device provided at a connection portion between a backpack belt of a school bag and a backpack, and is a device main body externally installed at the connection portion and the device main body. It is provided with a cap protruding from the belt and a telescopic portion for maintaining a state of contact by the cap with the sleeve at the end of the arm connecting the main body of the back belt and the belt.

INDUSTRIAL APPLICABILITY The present invention provides a belt angle limiting device, a backpack belt, a backpack, and a school bag that can maintain an upright state of a rising portion of a backpack belt when carrying it on the back and can tilt the belt forward or backward when necessary.

The figure which looked at the school bag provided with the restriction device which concerns on embodiment from the back plate side. (A) Partial front view of the peripheral portion of the belt angle limiting device according to the first embodiment as viewed from the back side of the backpacker, (B) Side view of the belt angle limiting device, (C) The peripheral part of the limiting device was cut along the line II-II, and the peripheral part of the limiting device was cut along the line I-I of (D) and (A). Side sectional view. (A) A schematic side view showing the storage mode of the school bag at the time of delivery, (B) A belt angle limiting device for erecting the backpack belt from the sleeve along the back plate along the line I-I shown in FIG. 2 (A). Side cross-sectional view, (C) Side cross-sectional view of the belt angle limiting device along the line I-I shown in FIG. 2 (A) when the backpack belt is hung on the school bag lid side. (A) Schematic side view showing how the school bag is stored in the rocker, (B) Line I-I shown in FIG. 2 (A) of the belt angle limiting device when the belt angle limiting device is tilted toward the back plate. (C) A side sectional view of the limiting device when the backpack belt is folded forward. (A) A front view of a modified example of the spine to which the belt angle limiting device according to the first embodiment is applicable, and (B) a front view of the spine to which the belt angle limiting device of the modified example is attached. A side sectional view showing a second modification of the spine to which the belt angle limiting device according to the first embodiment is applicable. (A) A side sectional view showing a state in which the cap exceeds the edge portion of the belt angle limiting device according to the second embodiment, and (B) a side sectional view showing a state in which the cap is fitted in the recess. (A) Partial front view of the peripheral part of the belt angle limiting device according to the third embodiment as seen from the back side of the backpacker, (B) Partial back view as seen from the crown side, (C) Partial side view as seen from the side. Figure, (D) Side sectional view from the same side.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In the following embodiments, the expressions of up and down, left and right, and front and back are based on the state in which the user carries the school bag on his back. Further, in each figure, the front of the school bag (that is, the side in contact with the back of the user) is indicated by an arrow FW, and the rear (that is, the side of the school bag main body) is indicated by an arrow BW. In each figure, for the sake of simplicity, some configurations may be omitted as appropriate.

[Outline of school bag 100 and backpack 50]
First, with reference to FIG. 1, the school bag 100 to which the restriction device 10 according to the embodiment is mounted will be outlined.
FIG. 1 is a view of a school bag 100 provided with a limiting device 10 according to an embodiment as viewed from the back plate 12 side.
In the school bag 100, as shown in FIG. 1, the end side of the crown 14 is sewn to the upper side of the back plate 12 of the school bag body 13 having a covered bottomed square cylinder made of leather or synthetic resin. The crown 14 covers the opening of the school bag body 13 and is locked on the outer surface of the bottom of the school bag body 13. The back iron 50 according to the embodiment is arranged on the upper portion of the back plate 12 on the left and right center lines C. The backrest 50 swingably fixes the upper end portions of each pair of left and right backpack belts 15 in the longitudinal direction.

The back hook 50 is formed on each of a back bar main body 16 made of synthetic resin having a substantially oblong elliptical front shape, a pair of left and right arms 18 arranged in the back bar main body 16, and left and right arms 18, respectively. It is provided with an ellipse 21 pivotally supported by the sleeve 19 and a hanging ellipse 25 arranged behind the arms 18 at an intermediate portion between the arms 18 and allowing the school bag 100 to be suspended by a hook or the like of a study desk. ing.

The back iron body portion 16 is configured such that the front cover 16a is fitted to the front opening of the base 16b (FIG. 2B) having a bottomed flat square tube shape fixed to the upper center portion of the back plate 12. .. At the upper part of the outer surface of the front cover 16a, an arc plate-shaped reinforcing plate 24 sandwiches the back plate 12 and is riveted to reinforce the back iron main body portion 16. A pair of left and right arm insertion holes are provided on the upper end side of the back iron body 16 at the abutting portion between the opening edge of the base 16b and the front cover 16a. An arm 18 is inserted into each of the pair of left and right arm insertion holes and is pivotally supported inside the back iron body portion 16 so as to be swingable.

The arm 18 forms a sleeve 19 through which the iron 21 is passed, by folding back the upper end side of the arm 18 so as to be rolled into a cylindrical shape. The iron 21 is formed into a closed figure shape such as a quadrangle or a triangle as a whole by bending or bending one metal rod at several places. The lower side of the iron 21 is passed through the sleeve 19 so that it can swing back and forth, and the end portion of the backpack belt 15 is connected to the upper side. A belt angle limiting device (hereinafter, simply referred to as “limiting device”) 20 is attached to the end of the backpack belt 15.

(First Embodiment)
Next, with reference to FIGS. 2 to 4, the spine 50 provided with the limiting device 10 according to the first embodiment will be described.
FIG. 2A is a partial front view of the peripheral portion of the limiting device 10 according to the first embodiment, and FIG. 2B is a side view of the peripheral portion of the limiting device 10 of FIG. 2A.
In the spine 50, the surface in contact with the back plate 12 is referred to as the back surface, and the surface facing the user's back is referred to as the front surface. Further, in the following, the "side cross-sectional view" refers to a side cross-sectional view when cut along the line I-I of FIG. 2 (A).

As shown in FIGS. 2A and 2B, the backpack belt 15 is connected to the 鐶 21 by being hung on one side of the 鐶 21, folded back, and sewn together. When the iron 21 is formed in a rectangular shape, the connection portion between the backpack belt 15 and the iron 21 faces the sleeve upper end surface 19a. A limiting device 10 is attached to the backpack belt 15 so as to sandwich one side of the iron 21 from the front and back together with the backpack belt 15, and is fastened to the backpack belt 15 by rivets 17 penetrating the backpack belt 15 from the front and back. The limiting device 10 abuts on the sleeve 19 by a cap 23 protruding from the inside of the device main body 11 toward the facing sleeve 19 from the connection portion between the sleeve 19 and the iron 21.

Here, FIG. 2 (C) is a partial front sectional view seen from the front surface side by cutting the peripheral portion of the limiting device 10 along the line II-II of FIG. 2 (B), and FIG. 2 (D) is FIG. 2 (A). It is a side sectional view which cut the peripheral part of the limiting device 10 along the line I-I of).
As shown in FIG. 2C, the cap 23 is hung on the inner wall of the apparatus main body 11 at a flange portion, and the crown portion having a flat crown surface protrudes from the protruding hole of the apparatus main body 11. Inside the apparatus main body 11, a spring (expandable portion) 27 whose one end is fixed by a fixing plate 26 is in contact with the cap 23. The cap 23 is elastically pushed toward the sleeve 19 by the spring 27.

Further, the sleeve 19 has a flat upper end surface 19a, and both front and rear surfaces are bent at a substantially right angle to the upper end surface 19a of the sleeve to have an arch shape at the lower end and are connected to each other. That is, the left and right side surfaces or cuts of the sleeve 19 have a shape in which the lower end side of the rectangle protrudes downward in a semicircular shape. When the flat top surface of the cap 23 is pressed against the upper end surface 19a of the sleeve, the limiting device 10 stands upright from the sleeve 19 together with the backpack belt 15.

In order to tilt the limiting device 10 back and forth, a force is required to push the cap 23 into the device main body 11 against the spring force at the corners formed by the sleeve upper end surface 19a and the front and rear side surfaces. Therefore, this spring force due to the spring 27 becomes a drag force against the tilting of the limiting device 10 back and forth, and the limiting device 10 is maintained in an upright posture upward from the sleeve upper end surface 19a.

3 (A) is a view showing a storage mode of the school bag 100 at the time of delivery, and FIG. 3 (B) is a side sectional view of the limiting device 10 before turning the backpack belt 15 toward the crown 14 side, FIG. 3 (B). C) is a side sectional view of the limiting device 10 when the backpack belt 15 is hung on the crown 14 side.

For example, when the school bag 100 is packed in a box at the time of delivery, it is necessary to store the school bag 100 compactly without making a bending mark on the backpack belt 15. Therefore, in general, as shown in FIG. 3A, the backpack belt 15 is turned toward the crown 14 and stored in the box 31 along the surface of the crown 14.

At this time, if the limiting device 10 remains upright, the backpack belt 15 that tries to follow the curvature of the crown 14 suddenly bends around the connection portion with the limiting device 10. Therefore, at the time of such storage, the limiting device 10 is required to be tilted backward on the sleeve upper end surface 19a toward the crown 14.
That is, while the limiting device 10 is preferably in an upright state as shown in FIG. 3B when carrying it on the back, when the backpack belt 15 is wound on the crown 14 side, it can be tilted toward the crown 14 side with an appropriate force. Is desirable.

In the limiting device 10 according to the first embodiment, as shown in FIG. 3C, the limiting device 10 is tilted toward the crown 14 against the restoring force that tries to push out the cap 23 of the spring 27. Then, the cap 23 is pushed into the corner portion and pushed into the apparatus main body 11. Then, the limiting device 10 rotates and tilts toward the crown 14.

4A is a view showing how the school bag 100 is stored in the locker 35, and FIG. 4B is a side sectional view of the limiting device 10 when the limiting device 10 is tilted forward, FIG. 4; (C) is a side sectional view of the limiting device 10 when the backpack belt 15 is folded forward.

The backpack belt 15 serves as an underlay for the backboard 12 when the school bag 100 is stored in the locker 35 as shown in FIG. 4A or when it is laid on its side on the floor. At this time, if the limiting device 10 remains upright from the sleeve upper end surface 19a, the backpack belt 15 bends and damages the backpack belt 15. Therefore, when a predetermined force or more is applied to the limiting device 10, it is preferable that the limiting device 10 can be tilted forward toward the back plate 12.

As shown in FIG. 4B, the limiting device 10 according to the first embodiment can be tilted forward by trying to tilt it forward with a force equal to or higher than a certain level, as in the case of tilting it backward. That is, the cap 23 is pushed into the apparatus main body 11 at the corners between the sleeve upper end surface 19a and the front side surface with a force equal to or higher than a certain level. When the limiting device 10 tilts forward beyond this corner, the cap 23 regains a slight protrusion as shown in FIG. 4C, and the limiting device 10 rotates from the front to the bottom with a light force. The limiting device 10 can rotate along a semicircular portion which is the lower surface of the sleeve 19 and can be an underlay of the back plate 12 together with the limiting device 10.

Next, a modified example of the limiting device 10 and the arm 18 according to the first embodiment will be described with reference to FIGS. 5 (A) and 5 (B) and FIG.
The shape of the arm 18, the shape of the limiting device 10, and the arrangement relationship thereof are not limited to the example shown in FIG. Various backpack shapes or belt shapes are used for known school bags. Therefore, in consideration of the ease of carrying the school bag on the back and the shape of the existing parts, the shape of the limiting device 10 and the like can be naturally slightly deformed.

For example, FIG. 5A is a front view of the spine 50a according to a modification to which the limiting device 10 can be applied.
The left and right arms 18a of the spine 50a may be bent toward the left and right outwards, respectively, as shown in FIG. 5A. By bending the left and right arms 18a outward in this way, the left and right sleeve upper end surfaces 19a face the left and right outside, and the left and right backpack belts 15 are connected to the school bag 100 so as to swell outward.

Further, FIG. 5B is a front view of the spine 50 equipped with the modification limiting device 10a.
As shown in FIG. 5B, the arm 18 and the sleeve 19 of the arm 18 may extend parallel to the left and right center lines C, and the backpack belt 15a and the apparatus main body 11a may be bent toward the left and right outwards. In this case as well, the backpack belt 15a can be inflated to the left and right outside while maintaining the function of the limiting device 10a.

Further, FIG. 6 is a side sectional view showing a spine 50b according to a second modification to which the limiting device 10 can be applied.
As shown in FIG. 6, the arm 18 of the spine 50b may have the sleeve upper end surface 19b of the sleeve 19A tilted forward in advance. In this case, the backpack belt 15 tilts forward at the contact portion with the arm 18.
The cross-sectional shape of the sleeve 19 shown in FIG. 2 (D) or FIG. 6 is an example, and the cross-sectional shape can be freely restricted as long as the rotation of the backpack belt 15 can be restricted by the elastic contact of the cap 23. Can be designed.

As described above, according to the limiting device 10 according to the first embodiment, when the school bag 100 is carried on the back, the end portion of the backpack belt 15 can be maintained in an upright state along the 12 surfaces of the back plate. On the other hand, the end portion of the backpack belt 15 can be tilted forward or backward when necessary such as when storing.
Therefore, it is possible to reduce the burden on the user with a light feeling when carrying the school bag 100 on the back without applying a bending load to the backpack belt 15 at the time of storage or lying down.

(Second Embodiment)
7 (A) and 7 (B) are side sectional views of the peripheral portion of the limiting device 10 according to the second embodiment.
FIG. 7A is a side sectional view showing a state in which the cap 23 of the limiting device 10 exceeds the edge portion 32, and FIG. 7B is a side sectional view showing a state in which the cap 23 is fitted in the edge portion 32. It is a figure.

In the limiting device 10 according to the second embodiment, as shown in FIGS. 7A and 7B, an edge portion 32 for holding the cap 23 is formed on the sleeve upper end surface 19a.
In the second embodiment, it can be considered that the edge portion 32 is formed at the front-rear end portion or the four sides of the sleeve upper end surface 19a, and the recess 33 into which the cap 23 is fitted is formed.

For example, if the elastic force of the spring 27 is insufficient, the cap 23 is easily pushed into the device main body 11, and the limiting device 10 is disengaged from the sleeve upper end surface 19a and tilts forward or backward with a slight impact. Therefore, the recess 33 can be provided on the upper end surface 19a of the sleeve to adjust the ease of disengagement of the cap 23 from the upper end surface 19a of the sleeve. The ease with which the cap 23 can be removed from the sleeve upper end surface 19a can be easily adjusted by adjusting the height of the edge portion 32.
The edge portion 32 may be only the front end or the rear end of the sleeve upper end surface 19a.

Since the second embodiment is structurally and operationally the same as the first embodiment except that the edge portion 32 is provided on the sleeve upper end surface 19a, overlapping description will be omitted.

As described above, according to the limiting device 10 according to the second embodiment, in addition to the effect of the first embodiment, it is possible to adjust the degree of maintenance of the backpack belt 15 in the upright state.

(Third Embodiment)
8 (A) to 8 (D) are schematic block diagrams of the peripheral portion of the limiting device 10b according to the third embodiment.
8 (A) is a partial front view of the peripheral portion of the limiting device 10b as viewed from the front side, FIG. 8 (B) is a partial rear view of the peripheral portion of the limiting device 10b as viewed from the back side, and FIG. 8 (C) is a peripheral portion of the limiting device 10b. A partial side view seen from the side surface, FIG. 8 (D) is a side sectional view of the peripheral portion of the spine 50 in FIG. 8 (C).

The limiting device 10b according to the third embodiment is attached without the limiting device 10b sandwiching the backpack belt 15 back and forth.
For example, the limiting device 10b is attached to one side of the backpack belt 15 as shown in FIGS. 8A to 8D.

The back plate 12 side of the school bag 100, particularly the vicinity of the connection portion between the backpack belt 15 and the iron 21, is an area that is easily visible to the user. If the limiting device 10b is attached to this area in a manner that is easily visible to the user, it may give a complicated and mechanical impression. Further, in the case of a design in which the distance between the upper side and the lower side of the iron 21 is short, it may be difficult to attach the limiting device 10b as in the first embodiment. Further, for other reasons, for example, the backpack belt 15 may be arranged closer to the back plate 12 and positively adhered to the back of the user, and a mounting mode different from that of the first embodiment may be required.

Therefore, in the third embodiment, instead of sandwiching the threading portion of the backpack belt 15 through the iron 21 between the apparatus main body 11, as shown in FIGS. 8A to 8D, the backpack belt 15 is covered on one surface. Install.
As shown in FIG. 8B, the limiting device 10b is configured by integrally forming a box-shaped device main body 11c (11) for accommodating a spring 27 on a mounting plate 11b (11) having a rivet hole. .. When the limiting device 10b is provided on the crown 14 side, as shown in FIG. 8A, the wearing feeling of the limiting device 10b is reduced when the school bag 100 is viewed from the back plate 12 side. Further, in the limiting device 10b according to the third embodiment, the existing school bag 100, which is not supposed to be mounted with the limiting device 10b, can be retrofitted with a rivet 17 or the like.

In FIGS. 8A to 8D, the apparatus main body 11c is attached to one surface on the crown 14 side of the backpack belt 15, but the limiting device 10b may be attached to one surface on the back plate 12 side. Further, depending on the design, the mounting mode is not limited as long as the movement of the backpack belt 15 is restricted by contacting the cap 23 with the sleeve 19, such as providing the device main body 11c on the left and right side surfaces or the iron 21.

Since the third embodiment is structurally and operationally the same as the first embodiment except that the limiting device 10b is attached without sandwiching the backpack belt 15 back and forth, overlapping description will be omitted. ..

As described above, according to the limiting device 10b according to the third embodiment, the same effect as that of the first embodiment can be exhibited even when the mounting mode in which the backpack belt 15 is sandwiched between the front and rear is not preferable.

According to the limiting device 10 of at least one embodiment described above, by limiting the ease of rotation of the iron 21, the upright state of the rising portion of the backpack belt 15 is maintained when the belt is carried on the back, and the rising portion of the backpack belt 15 is maintained in an upright state, and when necessary, forward or backward. The belt 21 can be tilted.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention.
These embodiments can be implemented in various other embodiments, and various omissions, replacements, changes, and combinations can be made without departing from the gist of the invention.
These embodiments and variations thereof are included in the scope of the invention described in the claims and the equivalent scope thereof, as are included in the scope and gist of the invention.

For example, the spring is provided inside the main body of the device, but the mode is not limited as long as the cap can be provided with an elastic force to project toward the sleeve.

100 ... school bag, 50 (50b, 50a) ... rivet, 10 (10a) ... limiting device, 10b ... limiting device, 11 (11a, 11b, 11c) ... device body, 11b ... mounting plate, 12 ... back plate, 13 ... school bag body, 14 ... crown, 15 (15a) ... backpack belt, 16 (16a, 16b) ... backpack body (front cover, base), 17 ... rivet, 18 (18a) ... arm, 19 ... sleeve, 19a ... sleeve upper end surface, 19b ... sleeve upper end surface, 21 ... rivet, 23 ... cap, 24 ... reinforcing plate, 25 ... hanging iron, 26 ... fixing plate, 27 ... spring (expandable part), 31 ... box, 32 ... edge , 33 ... concave, 35 ... rocker, C ... left and right center line.

Claims (7)

It is a belt angle limiting device provided at the connection between the backpack belt of the school bag and the backpack.
The device body externally installed at the connection part and
A cap protruding from the main body of the device and
A belt angle limiting device comprising: a telescopic portion that is abutted against the cap and keeps the cap in contact with a sleeve at an end of an arm connecting the main body of the back 鐶 and the 鐶. The belt angle limiting device according to claim 1, wherein the main body of the device sandwiches the front and back of the backpack belt from the outside and is fixed to the backpack belt. The belt angle limiting device according to claim 1 or 2, wherein the main body of the device is fixed to one surface of the backpack belt. A backpack belt provided with the belt angle limiting device according to any one of claims 1 to 3. The belt angle limiting device according to any one of claims 1 to 3.
With the arm on which the sleeve was formed,
A spine equipped with the above-mentioned iron. The dorsal iron according to claim 5, wherein the sleeve is provided with a recess for fitting the crown of the cap. A school bag provided with the belt angle limiting device according to any one of claims 1 to 3.

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