JP5820949B1 - school bag - Google Patents

Abstract

A low-cost school bag that is highly safe and easy to use is provided. SOLUTION: Backpack belts 5 and 6 for carrying a school bag main body 2, a back ring 4 disposed on a back plate 3 of the school bag main body 2, and a pair of rockers disposed on the back ring 4 so as to be swingable. Arms 8 and 9. The pair of arms 8, 9 are formed so that the upper ends of the arm bodies 8 a, 9 a are higher than the upper end of the upper plate, and the shoulder belts 5, 6 sandwiched between the pair of arms 8, 9, respectively. The upper part is formed to rise upward. [Selection] Figure 1

Description

  Embodiments described herein relate to a school bag.

  Generally, the school bag is provided with a back ring for attaching a shoulder belt to the upper center part of the back plate of the school bag body.

  Conventionally, this type of school bag has a pair of left and right mounting rings having annular insertion holes attached to the back ring, and one end of each of the pair of left and right shoulder belts is inserted into the insertion holes of the mounting ring and folded. A pair of left and right shoulder belts are attached to the back plate of the school bag main body by fixing the folded end portion by riveting or sewing (see Patent Documents 1, 2, and 3).

  The school bags described in Patent Documents 1 to 3 raise the upper portions of the pair of left and right shoulder belts upward so that the user, such as a child, can easily carry the pair of left and right shoulder belts. Various means are provided.

  For example, in the invention described in Patent Document 1, there is provided a belt locking portion that regulates the rotation angle of the attachment ring to which the pair of shoulder belts are attached and holds the attachment ring upward.

  Further, in the invention described in Patent Document 2, the rotation angle of the annular coupling body coupled to the backpack belt is regulated by a required angle so as to face upward, and an elastic body that holds the upward state is provided on the backpack belt. ing.

  Furthermore, in the invention described in Patent Document 3, there is provided a fixture or the like for holding a ring-shaped connecting ring connected to the shoulder belt in a state of facing upward.

Japanese Patent Laid-Open No. 2004-237072 JP 2004-81800 A Utility Model Registration No. 3118031

  However, in the inventions described in Patent Documents 1 to 3, since the connection part such as the connection ring and the attachment ring connected to the shoulder belt is an annular shape (ring shape) having an insertion hole, the annular part has a convex part. And the insertion hole forms a recess. For this reason, when the schoolchild who is the user carries the school bag, since the ring-shaped connecting ring and the uneven part of the mounting ring come into contact with the child's back, if the school bag swings up and down or laterally due to the child's walking etc. There is a problem that the child's back rubs and gives pain.

  In addition, since the connecting portions such as the connecting ring and the mounting ring are annular (ring-shaped), the child's hair is likely to enter the insertion hole of the connecting portion and get entangled. For this reason, there is also a problem that when a child is carrying a school bag, especially when it is lowered, the hair is pinched and painful.

  Furthermore, in the above conventional example, there is one that holds the upper portion of the shoulder belt in an upwardly raised state so that the user can easily carry the shoulder belt. Since separate members such as a body and a fixture are provided, the number of parts and the number of assembling steps are increased correspondingly, resulting in a decrease in assembly workability and an increase in cost.

  The problem to be solved by the present invention is to provide a low-cost school bag that is safe and easy to use.

  The school bag of the embodiment includes a pair of left and right shoulder belts for carrying the school bag body, a back ring disposed on the back plate of the school bag body, and a pair of left and right arms swingably disposed on the back ring. Have.

  The pair of arms is formed such that the upper end of the arm body is formed so that the upper end of the arm body is higher than the upper end of the upper plate, and the upper portions of the pair of shoulder belts rise upward.

  According to the present invention, when a user such as a child carries a pair of shoulder belts, the upper portions of the pair of shoulder belts that hang on the user's shoulders are formed so as to rise upward. The user's arm can be easily passed, and the usability is improved accordingly.

The front view which abbreviate | omits and shows a part of back surface of the school bag of embodiment. (A) is an enlarged front view of the back ring shown in FIG. 1, (b) is a side view of the back ring from which the reinforcing plate shown in (a) is removed. FIGS. 2A and 2B are partial cross-sectional views of a back ring showing a partial cross section before and after the swinging action of a pair of left and right arms by removing the front cover shown in FIG. (A) is a front view of the arm body, (b) is a side sectional view before assembling the arm body and the upper plate, and (c) is the same, after attaching the upper plate to the arm body shown in (b). The partial side sectional view when providing in a back ring. 4A is a front view of the upper plate shown in FIGS. 4B and 4C, FIG. 4B is a side view of the upper plate, and FIG. 4C is a rear view of the upper plate. (A)-(c) is a sectional side view which shows the various modifications of the arm main body and upper board which concern on other embodiment. Front views of a back ring, a pair of arms, a hanging ring, and the like according to another embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several drawing.

(First embodiment)
FIG. 1 is a partially cutaway front view showing a part of the back surface of the school bag according to the first embodiment, FIG. 2A is an enlarged front view of the back ring shown in FIG. 1, and FIG. It is a side view of the state which removed the reinforcement version of the back ring to show.

  As shown in FIG. 1, the backpack 4 is arrange | positioned on the center part of the upper part of the backplate 3 of the closed-bottomed square tube-shaped school bag main body 2 made of leather or synthetic resin. The back ring 4 is for attaching one end portion (upper end portion in FIG. 1) of a pair of left and right shoulder belts 5 and 6, a main body case 7 made of a synthetic resin having a substantially oblong front shape, and the main body case. 7 and a pair of left and right arms 8 and 9 made of synthetic resin, which are disposed so as to be swingable in the left and right directions, and behind the pair of arms 8 and 9 at an intermediate portion between the arms 8 and 9. And a metal hanging ring 10 to be disposed. The suspension ring 10 is suspended by being hooked on, for example, a hook (not shown) that suspends the school bag 1.

  3A shows a state before the pair of left and right arms 8 and 9 swings, and FIG. 3B shows a state after the arms 8 and 9 swing. As shown in FIG. 3 (a), the main body case 7 of the back ring 4 includes a pair of left and right upper openings 7a and 7a that are opened at the left and right ends of the upper end in the figure, and the back plate 3 of the school bag body 2. A base 7b made of a synthetic resin having a flat bottomed cylindrical shape fixed to the upper central portion of the base, a front opening 7c in which the front of the base 7b on the front side in FIG. 3 (a) is opened, and the front opening 7c. Close It has a front cover 7d which is a synthetic resin main body lid shown in FIG.

  The base 7b is integrally formed with an inner fitting wall 7e that protrudes slightly toward the front (front) side in FIG. 3 (a) on both the left and right side surfaces and the bottom of the opening edge of the front opening 7c. Yes.

  On the other hand, as shown in FIG. 4C, the front cover 7d is integrally formed with an outer fitting wall 7f that abuts on the inner fitting wall 7e of the base 7b at the outer peripheral edge thereof.

  As shown in FIG. 2A, an arc plate-like reinforcing plate 11 is screwed to the upper portion of the outer surface of the front cover 7d with a plurality of, for example, three set screws 12, 12, 12, and the strength of the body case 7 is increased. Reinforcement of The reinforcing plate 11 embeds a plurality of metal bars 11b, 11b in the form of a metal strip such as an aluminum plate on the front surface of a reinforcing plate body 11a made of synthetic resin to reinforce the strength of the reinforcing plate body 11a itself. . The reinforcing plate 11 is attached to the front cover 7d by a plurality of set screws 12, 12,... Via a circular plate-like back plate (not shown) attached to the inner surface of the front cover 7d.

  As shown in FIGS. 2, 3A and 3B, the pair of left and right arms 8 and 9 have arm main bodies 8a and 9a respectively formed of a single plate having a predetermined thickness made of synthetic resin.

  Each arm main body 8a, 9a includes arm inner end portions 8b, 9b extending substantially vertically from the pair of left and right upper openings 7a, 7a of the main body case 7 to the inside thereof, and the upper case openings 7a, 7a The arm outer end portions 8c and 9c extending outward are integrally connected to each other by a synthetic resin.

  As shown in FIG. 4 (c), the inner end portions 8b and 9b of each arm are formed in a straight shape so as to rise substantially vertically, and the outer end portions 8c and 9c of the arms are formed when the child carries the school bag body 2. It leans forward at the required angle so as to approach the back side of the child.

  The inner end portions 8b and 9b of the arms are provided with insertion holes 14a and 15a having countersunk holes through which the support shafts 14 and 15 that support the pair of left and right arm bodies 8a and 9a so as to be swingable in the left and right directions, respectively.

  As shown in FIG. 4C, the support shafts 14 and 15 project from the inner side surface of the base 7b to the front cover 7d side substantially perpendicularly and pass through the insertion holes 14a and 15a of the arm bodies 8a and 9a. A cylindrical base mounting boss 7g to be inserted, a cover mounting boss 7h that protrudes substantially perpendicularly from the inner surface of the front cover 7d to the base 7b side, and fits into the insertion hole of the cylindrical base mounting boss 7g, and these The mounting bosses 7g and 7h are configured by a set screw (not shown) that is screwed in a connected state.

  That is, after these base mounting bosses 7g are inserted into and connected to the insertion holes of the cover mounting boss 7h, the support shafts 14 and 15 are respectively screwed from the screw holes on the back surface of the base mounting boss 7g, whereby the base mounting boss 7g. The base 7b and the front cover 7d are fastened by fixing the connection state between the cover 7b and the cover mounting boss 7h.

  Then, as shown in FIGS. 3A, 3B, and 4A, the inner end portions 8b, 9b of the arms are substantially triangular shapes that protrude outward from the left and right end portions, respectively. The stopper protrusions 8d, 8e, 9d, and 9e are integrally coupled.

  These stopper projections 8d, 8e, 9d, and 9e are in contact with two sets of left and right stoppers 16a and 16b and 16c and 16d disposed in the main body case 7, respectively. The swing angle in the left-right direction is restricted to a predetermined angle.

  These stoppers 16a, 16b, 16c, and 16d are protrusions that are integrally projected on the inner surface of the base 7b of the main body case 7 at a required interval on both the left and right sides of the pair of left and right arms 8 and 9. Rib).

  Each arm inner end portion 8b, 9b is integrally provided with a substantially inverted triangular locking projection 8f, 9f protruding in the lateral direction in the figure at the lower end in the figure.

  The pair of left and right engaging projections 8f and 9f are provided outside the rectangular cylindrical sliding terminals 17a and 18a provided at the lower ends of the pair of left and right compression coil springs 17 and 18 arranged in the vertical direction in the figure. The end faces are in contact with each other. These compression coil springs 17 and 18 always elastically press the locking protrusions 8f and 9f downward in the figure, and urge them to a position where the pair of left and right arm outer ends 8c and 9c approach each other.

  Each sliding terminal 17a, 18a is formed in the shape of a square tube of synthetic resin, and is coupled to the lower ends of the compression coil springs 17, 18 in the figure and is slidably disposed. The pair of left and right compression coil springs 17 and 18 are accommodated in a vertical hole formed in the inner surface of the base 7b, and each upper end is fixed.

  As shown in FIGS. 2 (a) and 2 (b), the arms 8 and 9 are provided on the surfaces of the arm outer ends 8c and 9c of the arm bodies 8a and 9a, that is, the back of the child when the school bag 1 is carried on the back. A flat portion 8h, 9h is formed by flatly forming a facing surface facing the side.

  These flat portions 8h and 9h form notches 8i and 9i in the lower portion in FIG. 3, while upper portions thereof are riveted to the upper ends of the pair of left and right shoulder belts 5 and 6 shown in FIG. It forms in the adhering part 8j and 9j to adhere.

  The adhering portions 8j, 9j form a plurality of, for example, three rivet insertion holes 19a, 19a,... Such as counterbore holes through which the rivets 19 are inserted.

  Then, as shown in FIGS. 4B and 4C, the arms 8 and 9 are each provided with an upper plate 20 having a substantially L-shaped side surface on the back side of the arm outer end portions 8c and 9c. . The upper plate 20 is attached to the arm bodies 8a and 9a so that the upper ends thereof are lower than the upper ends of the arm bodies 8a and 9a. That is, the arm bodies 8 a and 9 a are formed so that the upper ends thereof are higher than the upper ends of the upper plate 20.

  As shown in FIGS. 5 (a), 5 (b), and 5 (c), the upper plate 20 has a horizontally long rectangular shape having a width substantially equal to the lower end portions of the arm outer end portions 8c and 9c, and the upper ends are the arm main bodies 8a and 9a. The upper plate main body 20a is lower than the upper end of the upper plate main body 20a, and the U-shaped flange 20b is integrally projected at the lower end of the back surface of the upper plate main body 20a.

  Each upper plate body 20a communicates with a pair of left and right rivet insertion holes 19a, 19a arranged side by side in the lower part of each arm outer end 8c, 9c in FIGS. 2 (a), 3 (a), 3 (b). A pair of left and right counterbore rivet insertion holes 20c and 20c are formed.

  As shown in FIG. 5 (c), the flange 20b has a recess 20d for fitting at a substantially middle portion of the lower end thereof. As shown in FIG. 4B, the concave portion 20d is fitted and attached to a convex portion 21 that protrudes integrally with the back surface (back surface) of each arm outer end portion 8c, 9c. In this attached state, the height of the upper end of each arm body 8a, 9a is higher than the upper end of each upper plate 20 by a required length.

  In this way, the upper plate 20 is attached to the arm main bodies 8a and 9a, and in each gap g formed between the upper plate 20 and the arm main bodies 8a and 9a, a pair of left and right shoulder belts 5 and 6 are provided. One end portion (upper end portion in FIG. 1) is inserted, and a plurality of rivets 19 are inserted into the pair of left and right rivet insertion holes 19a and 19a, and the rear rivet insertion holes 20c and 20c, respectively, Riveted by etc. By this riveting, the upper end portions of the shoulder belts 5 and 6 are fixed to the fixing portions 8j and 9j of the arm main bodies 8a and 9a, and the upper plates 20 are fixed to the arm main bodies 8a and 9a.

  3 (a) and 3 (b), the hanging ring 10 is hooked on, for example, a hook or the like disposed on the upper side surface of the user's desk or the like to suspend the school bag 1 on the desk or the like. Yes, it is configured to be movable in the vertical direction in the figure. That is, the suspension ring 10 has an upper C-shaped portion 10a and a U-shaped lower portion 10b integrally formed at the opening end of the C-shaped portion 10a. Is inserted from the central part of the body case 7 of the back ring 4 to the inside so as to be slidable in the vertical direction in the figure.

  The main body case 7 has a stopper pin 10e that is positioned inside the U-shaped opening of the U-shaped lower part 10b and is in contact with the closed end 10c of the U-shaped lower part 10b.

  Therefore, when the hanging ring 10 is hooked on a desk hook or the like, the school bag 1 is hung downward in the figure by its own weight, so that the closed end 10c of the hanging ring 10 is locked to the stopper pin 10e, and the hanging ring 10 is drawn in the figure. Extends upward. However, the suspension ring 10 may be a fixed type instead of such a movable type. That is, the suspension ring 10 may be fixed to the center portion of the main body case 7 of the back ring 4 and fixed.

  6A to 6C show modifications of the upper plate 20, respectively. These modifications are characterized in that a plurality of upper plates 20 with different thicknesses of the flanges 20b are prepared and prepared in advance in accordance with the thickness of the shoulder belts 5 and 6.

  That is, when the thickness of the shoulder belts 5 and 6 is small, the upper plate 20 having a thin flange 20b is used, and the thickness of the flange 20b increases as the thickness of the shoulder belts 5 and 6 increases. The upper plate 20 that becomes thicker is used.

  That is, according to this embodiment, it is only necessary to change the upper plate 20 in which the thickness of the flange 20b is different according to the thickness of the shoulder belts 5 and 6, and it is not necessary to change the arms 8 and 9 as a whole. For this reason, the freedom degree of the thickness of the shoulder belts 5 and 6 is high, and the efficiency of the attachment work when attaching the shoulder belts 5 and 6 to the back ring 4 can be improved and the cost can be reduced.

  And since the upper ends of the pair of left and right arm bodies 8a, 9a are formed higher than the upper end of the upper plate 20, the upper portions of the pair of left and right shoulder belts 5, 6 are shown in the figure of the pair of left and right upper plates 20. It can be raised above the upper end. For this reason, since it becomes easy for a user such as a child to insert his / her arm when carrying the pair of left and right shoulder belts 5 and 6, the ease of carrying the school bag 1 can be further improved.

  According to this embodiment, various arm bodies 8a and 9a having different heights are prepared in advance, and simply replaced as needed, so that the upper portions of the belts 5 and 6 can be easily and quickly attached. It can be started up appropriately.

  For this reason, it is possible to reduce the number of parts and the number of assembling steps as compared with the conventional example in which various parts are used to raise the upper portions of the shoulder belts 5 and 6 upward. As a result, cost reduction can be achieved.

  As shown in FIG. 7, the pair of left and right arms 8 and 9 configured in this manner individually swing in the left and right directions according to the pulling direction of the pair of left and right shoulder belts 5 and 6. For this reason, since the left and right arms 8 and 9 swing individually according to the movement of the shoulder belts 5 and 6 and the size of the shoulder width when the child carries the left and right shoulder belts 5 and 6, the shoulder is easily carried.

  In addition, since the opposing surfaces of the left and right arms 8 and 9 facing and touching the back of the child are formed in flat portions 8h and 9h that are not ring-shaped, they are configured in a ring shape such as a conventional connecting ring. Therefore, it is possible to solve the conventional problem of rubbing and giving pain and improving safety.

  Further, the pair of left and right arms 8 and 9 fix one end of the pair of left and right shoulder belts 5 and 6 with the rivets 19 at the fixing portions 8j and 9j, thereby improving both the fixing strength and the efficiency of the fixing operation. Can be planned.

  In other words, when one end of the back belts 5 and 6 is connected to a ring such as a conventional connecting ring, the end portions of the back belts 5 and 6 are inserted into the insertion holes of the rings, and then turned back. A step of fixing the portion by riveting is necessary.

  On the other hand, according to the present embodiment, one end portions of the shoulder belts 5 and 6 are inserted into the opening gap g between the arm bodies 8a and 9a and the upper plate 20, and the rivet insertion holes 19a and 19a and the back side rivet insertion holes are inserted. The rivets 19 can be fixed easily and quickly by riveting such as inserting and crimping the rivets 19 into the 20c and 20c. That is, it is possible to omit the step of inserting and folding the one end portions of the shoulder belts 5 and 6 into the insertion holes of the ring.

  Further, according to the present embodiment, the arm main bodies 8a and 9a are thickened as a whole and integrally molded with resin, so that the residual stress at the time of the resin molding can be reduced and the strength can be improved. it can.

  Further, since the swinging of the pair of left and right arms 8 and 9 is elastically controlled by the axial compression and extension action of the compression coil springs 17 and 18, conventional V-shaped leaf springs and torsion coil springs are used. Breakage such as spring breakage can be reduced as compared with the case of using. For this reason, the service life of the school bag 1 can be prolonged.

  In addition, according to the present embodiment, the pair of left and right arms 8 and 9 are individually elastically supported by the pair of left and right compression coil springs 17 and 18, respectively. Can be made. For this reason, it becomes easy to carry the shoulder belts 5 and 6.

  Since each arm main body 8a, 9a and the upper plate 20 can be temporarily fixed by fitting the convex portion 21 and the concave portion 20d provided thereto, the work of attaching the arm main body 8a, 9a and the upper plate 20 is performed. And the mounting accuracy can be improved.

  According to the present embodiment, the metal parts are limited to the metal rings 11b, 11b,..., The compression coil springs 17, 18, the set screw 12, and the rivet 19 of the suspension ring 10 and the reinforcing plate 11, and the rest are synthesized. Since it is made of resin, the entire back ring 4 can be reduced in weight.

  In the above embodiment, the height of the pair of left and right arm bodies 8a, 9a is made higher than that of the pair of left and right upper plates 20, 20, so that the upper part of the pair of left and right shoulder belts 5, 6 (the belt 5 However, the present invention is not limited to this. For example, the heights of the arm main bodies 8a and 9a and the upper plates 20 and 20 are increased. You may comprise so that the upper part of the shoulder belts 5 and 6 may be raised upwards by making both high.

  Further, the number of the rivet insertion holes 19a, 19a,... And the back side rivet insertion holes 20c, 20c may be reduced or increased as appropriate. For example, as shown in FIG. 7, the rivet insertion holes 19a, 20c are reduced to two. In this case, since the number of metal rivets 19 can be reduced, the weight of the entire back ring 4 can be reduced, and the cost can be reduced by reducing the number of parts.

  Moreover, you may comprise the suspension ring 10 so that it can incline back (back surface direction of drawings, such as FIG. 2, FIG. 3 (a), (b)).

  While various embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the present invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and gist of the present invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... School bag, 2 ... School bag main body, 3 ... Back plate, 4 ... Back ring, 5, 6 ... Left-right paired shoulder belt, 8, 9 ... Left-right paired arm, 8a, 9a ... Left-right paired arm main body, 8h, 9h: Flat portion, 8j, 9j: Adhering portion, 17, 18 ... A pair of left and right compression coil springs, 20 ... Upper plate.

Claims (4)

A school bag having a pair of left and right shoulder belts for carrying the school bag body, a back ring disposed on the back plate of the school bag body, and a pair of left and right arms swingably disposed on the back ring. There,
The pair of arms is configured so that the arm body can be sandwiched between the arm body made of a single plate swingably disposed on the back ring and the one end portion of the shoulder belt between the arm body side of the arm body. And an upper plate detachably disposed on the surface of
The pair of arms is formed such that the upper end of the arm belt is lifted upward by forming the arm body so that the upper end of the arm body is higher than the upper end of the upper plate. School bag characterized by being. A school bag having a pair of left and right shoulder belts for carrying the school bag body, a back ring disposed on the back plate of the school bag body, and a pair of left and right arms swingably disposed on the back ring. There,
The pair of arms is configured so that the arm body can be sandwiched between the arm body made of a single plate swingably disposed on the back ring and the one end portion of the shoulder belt between the arm body side of the arm body. And an upper plate detachably disposed on the surface of
The pair of arms form the arm main body so that the upper end thereof is substantially the same height as the upper end of the upper plate, and the upper portions of the shoulder belts sandwiched by the pair of arms are raised upward. The school bag is formed as described above. The school bag according to claim 1, wherein the back ring includes a compression coil spring that urges the pair of arms to swing in a direction in which the pair of arms approach each other. The school bag according to any one of claims 1 to 3, wherein each of the pair of arms is configured to be individually swingable.

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