JP3135046U - Improved school bag - Google Patents

Abstract

An object of the present invention is to prevent injuries of school children due to buckles and metal connecting brackets used for backpack belts of school bags.
A fixed case 31 is attached on the outer bottom surface of a school bag main body 2 provided with a pair of belt holes 8 at symmetrical positions on the bottom surface so that the insertion holes of the fixed case 31 are aligned with the belt holes 8. A protective cover 45 attached to the upper surface of 31 is slid in one direction to open the insertion hole 35, and then the tip of the backpack 20 is inserted into the school bag body 2 from the insertion hole of the fixing case 31 through the belt hole 8. Of the plurality of small holes provided at the front end of the backpack belt 20, after the arbitrary small holes are fitted into the locking projections of the fixed case 31, the protective cover 45 is slid to the original position to insert the insertion holes. 35 is closed, and the back belt 20 is connected so that it can be attached and detached and its length can be adjusted.
[Selection] Figure 1

Description

  The present invention relates to an improved school bag in which a belt connector for connecting a back belt is attached to the bottom surface of a school bag body.

  Conventionally, as shown in FIG. 19, the schoolchild school bag 70 includes a back plate 72, a large, medium, and small storage chamber 73 for storing various teaching materials, and a lid plate 74 that covers the storage chamber. A pair of back-belt belts (see FIG. 1), one end of which is attached to a back ring (not shown) provided at the center of the upper end of the back plate 72 and the other end is connected to a metal connecting fitting 75 attached to the bottom of the school bag body. (Not shown).

  The back belt attached to the school bag 70 includes a long upper belt and a short lower belt 83. The lower belt 83 is a metal attached to the center of the bottom surface of the school bag 70 as shown in FIGS. It is rotatably connected to a daruma ring 77 attached to the left and right of the made connection fitting 75.

As shown in FIG. 20, the lower belt 83 is attached with a buckle 85 for connecting the length of the shoulder belt so that the length of the shoulder belt can be adjusted, and a daruma ring 77 rotatably attached to the left and right of the connecting fitting at the other end. It is known that it is used by adjusting a length of the back belt by detachably connecting to a plurality of locking holes (not shown) provided at the tip of the back belt by attaching a connecting ring 78 connected to the back. (References 1, 2).
JP-A-9-262114 Japanese Utility Model Sho 63-120919

  As described above, the short belt 83 that adjusts the length of the backpack belt of the school bag 70 is connected to the circular ring 77 that is rotatably attached to the left and right of the metal connection fitting 75 that is attached to the bottom surface of the school bag main body 71. In addition, since the metal buckle 85 is attached to the other end, when the school bag 70 is carried on or taken down, the buckle portion may hit the flank or play with friends at the time of going to and from school. In some cases, the buckle needle connected to the short belt 83 could be injured or the school bag body could be damaged.

  Therefore, in order to prevent injury due to the buckle 85 of the short belt 83 or damage to the school bag main body, a protective cover 86 is attached to the back side of the buckle 85, or the surface of the connecting device 75 is formed in a curved shape so as to eliminate uneven portions as much as possible. Prevents accidental injuries and damage to the school bag itself.

  However, if the metal connection fitting 75 is attached to the bottom surface of the school bag main body 71 or the metal buckle 85 is attached to the short belt 83, the school child is likely to be injured by this buckle. Further, the metal connection fitting 75 attached to the bottom surface of the school bag body 71 has problems such as a complicated manufacturing process and an increase in weight.

  The problem to be solved by the present invention is to eliminate the short belt that adjusts the length of the backpack of the school bag carried by schoolchildren, and attach the tip insertion part of the backpack belt directly to the school bag body, so that the metal parts from around the school bag body The purpose of this invention is to prevent injuries to school children and to reduce the number of parts constituting the school bag, thereby simplifying and reducing the weight.

In order to achieve the above object, the present invention provides a pair of belt holes 8 and 8 at the bottom left and right symmetrical positions of the school bag body 2, attaches and detaches the insertion portion 22 of the shoulder belt 20 inserted into the belt hole, and adjusts the length. The belt connecting tool 30 that can be connected to each other is formed by being attached at positions that match the belt holes 8 and 8 respectively. Further, the belt connector 30 is provided with guide flanges 32 at both ends in the width direction, and a pair of screw holes 33 through which the fittings S attached to the school bag body 2 are inserted at both ends in the longitudinal direction. An insertion hole 35 that matches the belt hole 8 of the school bag body 2 is formed, and the insertion hole 35 is inserted into the small hole 23 provided in the insertion portion 22 of the backpack belt 20 between the insertion hole and the one screw hole 33a. A pair of flexible protrusions formed by integrally setting a stop projection 36, and establishing one end from the end of the insertion hole and bending the tip horizontally between the insertion hole 35 and the other screw hole 33b. A fixed case 31 formed by integrally providing a flexible step portion 40 in the width direction of the front end of the support rod 38, and a guide groove portion 46 fitted to the guide flange portion 32 of the fixed case 31 are provided at both ends in the width direction. The fixed case is allowed at one end in the direction. A concave groove 47 into which the stepped portion 40 is fitted is formed, a locking groove 49 through which the locking protrusion 36 of the fixed case 31 is inserted, and the guide groove 46 on both sides of the locking groove at the center of the back surface of the other end. The protective cover 45 is formed by providing a locking claw portion 50 on the side, and the guide groove portion 46 of the protective cover 45 is fitted into the guide flange portion 32 of the fixed case 31 so that the protective cover is attached to the fixed case 31. It is characterized by being formed so as to be slidable in the upper surface longitudinal direction. Further, the belt connector 30 is mounted on the outer bottom surface of the school bag body 2 so that the insertion holes 35 of the fixing case 31 are aligned with the belt holes 8 and 8, and is attached to the upper surface of the fixing case 31. The protective cover 45 is slid in one direction to open the insertion hole 35, and then the tip of the back belt 20 is inserted into the school bag body 2 from the insertion hole 35 of the fixing case 31 through the belt hole 8, and the back belt 20 of the plurality of small holes provided at the tip of 20 is inserted into the locking projection 36 of the fixed case 31, and then the protective cover 45 is slid to the original position to close the insertion hole 35. Thus, the back belt 20 is connected so as to be detachable and adjustable in length.

  Therefore, a belt formed by fixing the fixing case 31 having the insertion hole 35 at a position matching the belt hole 8 provided on the bottom surface of the school bag body 2 and slidably attaching the protective cover 45 to the upper surface of the fixing case. By attaching the connector 30 and detachably connecting the ends of the pair of backpack belts 20 to the left and right belt connectors 30, a school bag can be formed without using a metal connector. Injuries due to the metal fittings can be prevented and used safely, and the weight of the school bag can be reduced by reducing the number of parts.

  1 is a bottom view of a school bag according to the present invention, FIG. 2 is an inner bottom view of a school bag body, FIG. 3 is a plan view of a backpack belt, and FIG. 4 is a belt connector. FIG. 5 is a plan view of the belt coupler, FIG. 6 is a left side view of the belt coupler, FIG. 7 is a cross-sectional view along AA in FIG. 4, and FIG. 8 is a cross-sectional view along BB in FIG. 9 is a cross-sectional view taken along the line CC in FIG. 6, FIG. 10 is a plan view of a fixing case constituting the belt coupler, FIG. 11 is a left side view of FIG. 9, and FIG. 13 is a bottom view of the protective cover constituting the belt connector, FIG. 14 is a right side view of the protective cover, and FIG. 15 is a cross-sectional view taken along the line EE of FIG. The school bag 1 includes a school bag body 2 including a back plate 3, a large storage portion 5, a middle storage portion 6, a small storage portion 7 and a lid plate 9, and a back ring (not shown) with one end attached to the upper center of the back plate 3. ) And a belt connector 30 attached to target positions on both the left and right ends of the large accommodating portion 5 on the outer bottom surface of the school bag body 2.

  As shown in FIG. 1, a belt hole 8 is located in the shape of a square on the back plate side of the symmetrical left and right sides, and the center of the outer bottom surface is located on the bottom surface of the large housing portion 5 constituting the school bag body 2. The male portion 12a of the buckle 12 that stops the lid plate 9 so as to be opened and closed is attached, and the female portion 12b provided at the tip of the tension band 10 attached to the lower end of the lid plate 9 is detachably attached.

  The male part 12a is provided with a turning knob 13 at the tip, and the female part 12b is provided with a hole 14 through which the rotating knob 13 of the male part 12a is inserted. The lid of the cover plate 9 is closed by inserting the rotation knob 13 of the male portion 12a into the female portion 12b of the cover plate 9 and projecting the rotation knob from the female portion 12b and rotating it in a direction perpendicular to the hole 14. Can be made.

  As another embodiment of the buckle 12, a male part of a buckle (not shown) is attached to the front center lower part of the small accommodating part 7 of the school bag body 2, so that the female part provided in the center of the lower end of the lid plate 9 can be attached and detached. It can also be formed by mounting. Furthermore, not only the said form but a male part may be formed with a magnet or a male surface fastener, and the female part provided in the cover plate 9 side may be formed with the iron plate or female surface fastener which adsorb | sucks to a magnet.

  As shown in FIG. 2, an insole plate 15 is laid on the inner bottom surface of the large storage chamber 5 of the school bag body 2, and guide holes 16 are provided on the surface of the insole plate at positions corresponding to the belt holes 8, respectively. The guide plate 17 is positioned on both sides of the long side formed in the belt hole 8 and the insertion hole 35 on both sides in the width direction of the hole, so that the tip of the back belt 20 is attached to the frame of the belt hole 8 and the insertion hole 35. The large storage chamber 5 can be smoothly inserted without being caught on the side. Furthermore, a belt guide (not shown) for preventing the tip of the inserted back belt 20 from being twisted may be attached to the inner bottom surface of the large storage chamber 5. Furthermore, it is a matter of course that not only the insole plate 15 but also a blind plate (not shown) is laid on the inner bottom surface of the large storage chamber 5.

  As shown in FIG. 3, the back belt 20 is integrally formed with an insertion portion 22 that is inserted into the main body 2 at the tip of a pair of long and thin back portions 21 formed in a belt shape, and the longitudinal direction of the insertion portion 22. A plurality of locking holes 23 are provided in a line at equal intervals. The insertion portion 22 of the back belt 20 is detachably connected to a belt connector 30 attached to the outer bottom surface of the school bag body 2 so that the length of the back belt 20 can be adjusted.

  Each of the belt couplers 30 is formed of a hard synthetic resin material, and is attached to the outer bottom surface of the school bag body 2 on the left and right sides of the buckle 12 at positions matching the belt holes 8 as shown in FIGS. The fixed case 31 is attached to the outer bottom surface of the school bag body 2 and the protective cover 45 is slidably attached to the upper surface of the fixed case.

  As shown in FIGS. 4 and 10-12, the fixed case 31 is formed with a concave cross section in the width direction, bent upward at both ends in the horizontal direction to form guide flanges 32, and fixed cases at substantially both ends in the longitudinal direction. A pair of screw holes 33 through which screws 31, screws or fittings S for attaching 31 to the school bag body 2 are inserted are provided, and an insertion hole 35 that matches the belt hole 8 of the school bag body 2 is provided at the approximate center. . A locking projection 36 for inserting and locking the small hole 23 provided in the insertion portion 22 of the backpack 20 is integrally established between the insertion hole 35 of the fixing case 31 and the one screw hole 33a, A locking portion 37 for preventing the back belt from falling off is integrally formed with a slightly larger diameter than the locking projection 36 at the upper end of the locking projection.

  A pair of flexible support rods formed by setting one end from the end of the insertion hole 35 and bending the tip horizontally between the insertion hole 35 of the fixed case 31 and the other screw hole 33b. 38 are provided in parallel, and a flexible step portion 40 having a slope portion 39 on the upper surface in the tip width direction of the support rod is integrally provided. The flexible step portion 40 is configured to be able to be bent slightly below the same surface as the upper surface of the guide flange 32 when the inclined surface portion 39 is pushed down from above.

  As shown in FIGS. 4 and 13 to 15, the protective cover 45 is provided with guide grooves 46 fitted to the guide flanges 32 of the fixed case 31 at both lower ends in the width direction, and at one end in the longitudinal direction of the protective cover. A concave groove portion 47 that engages with the flexible step portion 40 of the fixed case 31 is formed, and a locking step portion 48 projects from the upper end of the concave groove portion. A locking groove portion 49 through which a locking portion 37 provided at the tip of the locking projection 36 of the fixed case 31 is inserted is provided on both sides of the locking groove portion to prevent the protective cover 45 from falling off near the guide groove portion 46. The locking claw portion 50 is formed integrally.

  Hereinafter, the operation of the embodiment of the present invention will be described. The school bag 1 is formed by providing a pair of belt holes 8 and 8 at left and right symmetrical positions on the bottom surface of the large accommodating portion 5 of the school bag body 2, and A buckle 12 is attached to the center of the bottom surface, and a belt connector 30 is attached to each of the symmetrical positions of the buckle at positions corresponding to the belt holes 8, 8.

  As shown in FIG. 16, the insole plate 15 laid on the inner bottom surface of the large storage chamber 5 of the school bag body 2 is connected to the guide plate 17 provided in the guide hole 16 on the long side of the belt hole 8 and the insertion hole 35. The insertion portions 22 of the back belt 20 are smoothly inserted into the large storage chamber 5 on both sides.

  As shown in FIG. 4, the fixing case 31 and the protective cover 45 constituting the belt connector 30 are fitted with the right guide groove portion 46 of the protective cover 45 and the left guide collar portion 32 of the fixing case 31, and then the protective case 45 is protected. When the cover is slid in the right direction, the lower surface of the front end of the protective cover 45 slides in the right direction while pressing the sloped portion 39 of the flexible step portion 40 provided on the left side of the fixed case 31 and pushing it down.

  When the protective cover 45 is further slid in the right direction, the leading end locking portion 37 of the locking projection 36 of the fixing case 31 is inserted into the locking groove portion 47 of the protective cover, and the locking portion is at the deepest portion of the locking groove portion. At the same time as 37 is locked, the flexible stepped portion 40 whose head is pressed by the back surface of the protective cover coincides with the concave groove portion 47. The flexible step portion 40 is raised and engaged by the repulsive force of the support rod 38, one end of the protective cover 45 is supported by the flexible step portion 40, and the other end is fixed by the locking portion 37 of the locking protrusion 36. To do. Therefore, the protective cover 45 is prevented from moving in the longitudinal direction by locking one side with the locking projection 36 and the other side with the flexible stepped portion 40, and closes the insertion hole 35 of the fixed case 31 (FIG. 5). ~ 9).

  When the back belt 20 is connected to the belt connector 30 of the school bag body 2, as shown in FIG. 16, the protective cover 45 is slid leftward to open the insertion hole 35 of the fixed case 31. The protection cover 45 is moved by pressing the flexible step portion 40 of the fixed case 31 holding one end of the protection cover downward so that the upper end of the flexible step portion 40 is moved from the left end portion of the protection cover 45. The protective cover 45 moves while passing through the upper surface of the flexible step portion 40 by moving it to the left after being detached and free.

  When the protective cover 45 is further moved leftward, the locking claw portion 50 provided on the bottom surface of the protective cover comes into contact with the flexible step portion 40 of the fixed case 31 and stops. Therefore, it is possible to prevent the protective cover 45 from falling off the fixed case 31.

  Next, as shown in FIG. 17, the distal end of the insertion portion 22 of the backpack 20 is inserted into the large storage chamber 5 of the school bag body 2 from the upper right side (back plate side) of the fixed case 31 through the insertion hole 35 and the belt holes 8 and 8. The predetermined small hole 23 is inserted into the locking projection 36 from among the plurality of small holes provided in the backpack belt 20.

  When inserting the distal end of the insertion portion 22 of the back belt 20 into the insertion hole 35, the guide plates 17 of the insole plate 15 are attached to both sides of the long side of the insertion hole and the belt holes 8, 8, The tip of the back belt 20 can be smoothly inserted into the large storage chamber 5 without being caught by the entrance of the insertion hole.

  After the locking projection 36 is inserted into the small hole 23 of the back belt 20 to a predetermined length, the protective cover 45 is slid rightward to close the insertion hole 35 as shown in FIG. When the protective cover 45 is slid in the right direction, the back cover belt 20 is moved from the insertion hole 35 of the fixed case 31 while sandwiching the back cover belt 20, and protrudes from the small hole 23 of the back cover belt 20. When the locking portion 37 of the locking projection 36 is inserted into the locking groove portion 49 of the protective cover 45 and the locking portion 37 is locked at the deepest portion, the flexible step portion 40 of the fixed case 31 moves from the back surface of the protective cover 45. The back belt 20 can be attached to the belt connector 30 by detaching and fitting and fitting into the concave groove 47 with the elastic force of the support rod 38.

  As described above, the connection to the connector 30 in which the insertion portion 22 of the back belt 20 is attached to the bottom surface of the school bag body 2 is performed from the insertion hole 35 of the fixed case 31 opened by sliding the protective cover 45 to the belt hole 8. Is inserted into the school bag body 2, and a small hole 23 provided in an insertion portion 22 of the backpack 20 is fitted into the locking projection 36 of the fixing case 31, and then the protective cover 45 is moved back to the original position. It can be connected by a simple operation of sliding the position to close the insertion hole 35.

  The back belt 20 connected to the belt connector 30 has the small holes 23 locked by the locking projections 36, and the upper and lower surfaces of the back belt 20 positioned in the belt connector 30 are crimped by the fixing case 31 and the protective cover 45. Since it is fixed, there is no fear that it will come out of the belt connector 30 even if the back belt 20 is pulled strongly, and even if the back belt 20 is pulled strongly in a direction substantially perpendicular to the belt connector 30, Since the portion 32 and the guide groove portion 46 of the protective cover 45 are formed deeply and engaged with each other, the protective cover 45 does not come off the fixed case 31 and can be used for a long time.

  As described above, when the backpack 20 is connected to the belt connector 30 provided on the bottom surface of the school bag body 2, the tip of the backpack 20 is directly connected to the backpack body 2 without using a lower belt or a metal connector. The school bag can be prevented from being injured, and the tip of the backpack 20 can be housed in the school bag body 2 so that it can be refreshed without getting in the way. Furthermore, the number of parts of the school bag 1 Thus, the weight of the school bag 1 can be reduced.

It is a bottom view of the school bag concerning this invention. It is an inner bottom view of a school bag main body. It is a top view of a backpack belt. It is a disassembled perspective view of a belt coupling tool. It is a top view of a belt coupling tool. It is a left view of a belt coupling tool. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a top view of the fixed case which comprises a belt coupling tool. FIG. 10 is a left side view of FIG. 9. FIG. 10 is a DD cross-sectional view of FIG. 9. It is a bottom view of the cover plate which comprises a belt coupling tool. It is a right view of a cover board. It is EE sectional drawing of FIG. FIG. 6 is a cross-sectional view of a state in which a lid plate is slid before the back belt is attached to the belt connector. FIG. 5 is a cross-sectional view of a state in which an insertion portion of a back belt is inserted into an insertion hole and a belt hole of a belt coupler. It is sectional drawing of the state which mounted | wore the belt coupling tool with the back belt and covered the cover plate. It is a bottom view of the conventional school bag. It is a top view of the conventional short belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 School bag 2 School bag main body 3 Back board 5 Large accommodation room 6 Medium accommodation room 7 Small accommodation room 8 Belt hole 9 Lid board 12 Buckle 15 Insole board 16 Hole 17 Guide plate 20 Backpack belt 21 Insertion part 22 Small hole 30 Belt connector 31 Fixed case 32 Guide hook part 33 Screw hole 35 Insertion hole 36 Locking protrusion 37 Locking part 38 Supporting part 39 Slope part 40 Flexible step part 45 Protective cover 46 Guide groove part 47 Concave groove part 48 Locking step part 49 Locking groove part 50 Locking claw

Claims (3)

  A pair of belt holes (8, 8) are provided at the bottom left and right symmetrical positions of the school bag body (2), and the insertion portion (22) of the shoulder belt (20) to be inserted into the belt hole is detachably connected so that the length can be adjusted. The improved school bag is characterized in that the belt connector (30) is attached to the belt hole (8, 8) at a position corresponding to the belt hole (8, 8). The belt connector (30) has a pair of screw holes (33) provided with guide flanges (32) at both ends in the width direction, and through fittings (S) attached to the school bag body (2) at both ends in the longitudinal direction. ) And an insertion hole (35) that matches the belt hole (8) of the school bag body (2) is formed in the approximate center, and the backpack is formed between the insertion hole and the one screw hole (33a). A locking projection (36) to be inserted into a small hole (23) provided in the insertion portion (22) of the belt (20) is integrally established, and between the insertion hole (35) and the other screw hole (33b). The flexible stepped portion (40) is integrally provided in the width direction of the distal end of a pair of flexible support rods (38) formed by establishing one end from the end of the insertion hole and bending the distal end horizontally. A fixed case (31);
A guide groove (46) that fits with the guide flange (32) of the fixed case (31) is provided at both ends in the width direction, and a concave groove that fits with the flexible step (40) of the fixed case (31). (47) is formed at one end in the longitudinal direction, and a locking groove portion (49) through which the locking protrusion (36) of the fixed case (31) is inserted is provided at the center of the back surface of the other end. A protective cover (45) provided with a locking claw (50) near the guide groove (46),
A guide groove portion (46) of a protective cover (45) is fitted to the guide flange portion (32) of the fixed case (31), and the protective cover is slidably attached in the longitudinal direction of the upper surface of the fixed case (31). The improved school bag according to claim 1.   The belt connector (30) is attached by fitting the insertion hole (35) of the fixing case (31) at a position matching the belt hole (8, 8) of the school bag body (2). ) Slides the protective cover (45) attached to the top surface in one direction to open the insertion hole (35), and then connects the tip of the back belt (20) from the insertion hole (35) of the fixing case (31) to the belt. Of the plurality of small holes provided at the tip of the backpack belt (20), the optional small hole (23) is inserted into the school bag body (2) through the holes (8, 8). After being inserted into the locking projection (36), the protective cover (45) is slid to the original position, the insertion hole (35) is closed, the back belt (20) can be attached and detached, and the length can be adjusted. The connection according to claim 1 or 2, characterized by being connected. Good type bag.

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