JP2012148064A - Bookbag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bookbag making a user feel light in weight applied on the shoulders or entire body to a level of one severalth or more of the weight, compared with a conventional bookbag having shoulder straps each secured and further adjusted in length between a pin portion and a pin hole, even when both of the bookbags have the same weight level.SOLUTION: The bookbag has a slidable adjuster mechanism for adjusting the length of a shoulder strap and securing the shoulder strap, and the slidable adjuster mechanism includes an upper or lower shoulder strap having a locking projection formed in a width direction of the strap, and a lower or upper shoulder strap having a plurality of recessed grooves formed at predetermined intervals in a width direction of the shoulder strap and locking the locking projection therein.

Description

  The present invention relates to a school bag, and more particularly, to a school bag that can be brought into close contact with the body when carried on the back, can reduce the load weight felt to the body, and can significantly reduce the burden felt by the user by carrying it on the back. .

  Schoolbags that elementary school students carry with teaching materials when they go to school tend to increase in capacity and size as textbooks and notebooks increase in size and the variety and diversification of teaching materials in recent years.

  Therefore, there is a tendency to become heavier than before when the contained items are added, and the burden on the shoulder and the whole body becomes larger than before, such as when students in the lower to middle grades carry it. ing.

  Here, a situation in which an elementary school student who is in the growth stage feels heavy loads on the shoulders and whole body is not desirable in terms of growth and health, and when the body movement of the heel is required during school attendance, etc. However, in order to do that, you should avoid situations where you feel heavy loads on your shoulders and body as much as possible.

  In the school bag, the structure and configuration of the shoulder belt is an important factor that determines the weight of the body felt by the elementary school children as a load on the shoulders and whole body. For this reason, various ideas have been made on the configuration of the backpack belt.

  For example, in the shoulder portion, the width of the shoulder portion is about 2 to 3 times wider than the narrowest portion, or wider than that, and the position of the upper mounting portion of the shoulder belt can be adjusted to the left and right. The proposal (patent document 1) or the proposal (patent document 2) etc. of making the position of the lower attachment part of a backpack belt adjustable right and left is made. In addition to the leather material, a proposal has been made on a backpack belt using a foamed resin material having a cushioning property that is formed wide (Patent Document 3).

  However, these proposals do not come out of the conventional belt belts used in the past, and the belt mounting position may be slightly shifted to the left or right in accordance with the changes in the physique during the 6 years of elementary school. Using only a foamed resin material with cushioning properties is not sufficient to make the weight perceived by the shoulders and the whole body epoch-making.

  In addition, with a conventional school bag that adjusts and fixes the length by the pin portion and pin hole of the shoulder belt, the adjustment and fixing of the belt length are hardly performed during the six-year period of use in elementary school life. At most, it is used several times at the time of purchase and later, that is, several times in several years. There was no actual situation.

JP 2006-304929 A Utility Model Registration No. 3152773 Utility Model Registration No. 3138960

  In view of the above-described points, the object of the present invention is to adjust the length of the weight perceived by the shoulder and the whole body using the pin portion and the pin hole of the conventional shoulder belt, even if the weight is actually the same level. The object is to provide a school bag that can be lightly felt to a level of a fraction or more compared to the case of fixing.

The school bag of the present invention that achieves the above-described object has the following configuration (1).
(1) Adjusting and fixing the length of the shoulder belt is formed at a predetermined interval in the belt width direction in which the upper and lower shoulder belts having locking protrusions formed in the belt width direction and the locking protrusions lock. A school bag comprising a slide-type adjuster mechanism comprising a lower or upper shoulder belt having a plurality of concave grooves.

In addition, the school bag of the present invention preferably has any one of the following configurations (2) to (6).
(2) A locking projection formed in the belt width direction is formed on the lower shoulder belt, and a plurality of concave grooves formed at a predetermined interval in the belt width direction to which the locking projection is locked are on the upper shoulder. The school bag according to (1), wherein the school bag is formed on a belt.
(3) The locking projection is provided on the buckle portion, and the locking relationship between the locking projection and the plurality of concave grooves is released by pushing a locking release pin provided on a side surface of the buckle portion. The school bag according to (1) or (2), wherein the school bag is configured as described above.
(4) The latching projection is provided on the buckle portion, and the latching relationship between the latching projection and the plurality of concave grooves is released by raising the buckle portion in a direction perpendicular to the belt plane direction. The school bag according to (1) or (2) above, which is configured as described above.
(5) The locking projection is provided on the buckle portion, and the buckle portion is engaged with the concave groove, and an upper or lower shoulder belt having the concave groove is introduced into the buckle. The school bag according to any one of (1) to (4), wherein the school bag has a rotating claw portion.
(6) The plurality of concave grooves are formed with a total length L of 15 to 30 cm in the shoulder belt length direction, according to any one of (1) to (5) above. school bag.
(7) The school bag according to any one of (1) to (6), wherein the locking protrusion is provided on a buckle portion, and a cover band is provided to cover the entire side surface of the buckle portion. .

  According to the school bag of the present invention according to claim 1, the stepwise length adjustment of the shoulder belt can be performed at a pitch of several millimeters, and the length of the shoulder belt is adjusted to the individual physique and body shape. Since it can be adjusted and fixed more optimally, the weight perceived by the shoulder and the whole body can be reduced by a factor of 10 or even 10 compared to the conventional case of fixing and adjusting the length with the pin part and pin hole of the shoulder belt. You can make it feel light by about a minute. The adjustment of the belt length and the fixing of the belt can be performed while the child himself carrying the bag is actually carrying the stored item in the school bag and carrying it on his / her back. It is significant that the belt length can be adjusted and fixed in that state while sensing with the body.

  Being able to reduce the weight of the experience not only contributes to the growth and health of the child's physique, but also makes it possible for children to do so even when they need agile body movements, such as when they are going to school. Protects against unexpected accidents and incidents.

  According to the school bag of the present invention according to claim 2, the upper back belt having a plurality of concave grooves formed at predetermined intervals in the belt width direction is passed through the buckle portion of the lower back belt having a locking projection. The belt can be adjusted to the optimum length by simply pulling it downward, and the optimum length can be adjusted and fixed easily. Adjusting and fixing the belt length in that state while sensing the optimal state where the weight can be felt lightly by simply pulling the upper shoulder belt downward while keeping the backpack on the back. Therefore, according to the physique and body shape of a child who grows day by day, the belt length can be easily adjusted and fixed in a more optimal state easily and frequently. Can fully demonstrate. This effect is also provided by the invention of claim 1, but in particular, the structure of claim 2 in which the length is adjusted by pulling the upper shoulder belt downward is easy.

  According to the school bag of the present invention according to any one of claims 3 to 7, the effect of the school bag of the present invention described above can be obtained even more reliably, and the locking state of the sliding adjuster mechanism can be released or released. A school bag that is easy to use in terms of prevention is provided.

FIG. 1 shows an example of an embodiment of a school bag according to the present invention, and is a schematic external view seen from the backrest side, showing a state where upper and lower backpack belts are not connected, The back belt is folded back to show the side with the groove facing the body. 1 shows an embodiment of a school bag according to the present invention, and is a schematic external view seen from the backrest side, showing a state where upper and lower shoulder belts are connected by the school bag shown in FIG. . (A), (b) is an external appearance perspective view explaining a model of an example of the slide type adjuster mechanism which can be employ | adopted with the school bag concerning this invention. (A), (b) is an external appearance perspective view explaining other examples of the slide type adjuster mechanism which can be employ | adopted by the school bag concerning this invention as a model.

  Hereinafter, the school bag of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 and FIG. 2 show an example of an embodiment of the school bag of the present invention, and the school bag body 1 has left and right shoulder belts 2 on the backrest portion 5 side. The right and left shoulder belts 2 are used for adjusting and fixing the length of the shoulder belt, and the upper shoulder belt 21 or the lower shoulder belt 22 having the retaining protrusions formed in the belt width direction and the engaging protrusions. The slide belt adjuster mechanism includes a lower back belt 22 having a plurality of concave grooves 3 formed at predetermined intervals in the belt width direction to be stopped or an upper back belt 21, and is configured to be performed individually. And

  The plurality of concave grooves 3 are indicated by a broken line on the upper-side belt 21 on the right side in FIG. 1, and on the other hand, as indicated by a solid line on the upper-side belt 21 that is folded back so that the back on the left side can be seen, It is provided on the back side (body side). The total length L in the belt length direction of the region where the concave groove 3 is provided is preferably about 15 cm to 30 cm. More preferably, the total length L is about 20 cm to 25 cm. This is so that it can adapt to the growth of the physique from the first grader to the sixth grader. The pitch of the concave grooves is about 3.5 to 6 mm, preferably about 4 to 5 mm, and the concave grooves are provided. The concave groove is preferably made of a hard synthetic resin material having good durability and formed as one member having a plurality of concave grooves as a whole.

  FIG. 1 shows a state in which the upper and lower shoulder belts 21 and 22 are not connected. FIG. 2 shows a state in which the upper and lower shoulder belts 21 and 22 are connected.

  According to the school bag of the present invention, the method of adjusting the length of the carrying belt through the pin through the pin hole in the conventional school bag and fixing it can only adjust the length at a pitch of about 2.5 to 3.5 cm. In contrast, the length of the shoulder belt can be adjusted and fixed at a finer pitch of about 3.5 to 6 mm, generally about 3.0 to 5 mm. Therefore, the slide-type adjuster mechanism can be fixed while adjusting the belt length under more optimal conditions while actually carrying it on the back, and can be carried on the back in a state where the school bag can be fitted to the body. As a result, according to the study by the present inventors, the bodily sensation weight is reduced by a fraction of 1 to 1 compared with the conventional system in which the length of the shoulder belt is adjusted and fixed by passing the pin through the pin hole of the shoulder belt. / 5, and in some cases, it can be reduced to about 1/10.

  In the present invention, as the slide type adjuster mechanism, a system adopted for a waist belt having the same mechanism that is commercially available can be adopted.

  For example, as a first example, as shown in FIG. 3A, a locking projection 7 such as a claw-shaped convex portion is provided near the rotation support shaft 8 of the buckle portion at the tip of the lower shoulder belt 22. The buckle 4 is provided, and when the buckle is pivoted (arrow A) with the pivot support shaft 8 as a fulcrum and straightened parallel to the belt surface, the claw-like convex portion 7 of the buckle and the upper shoulder belt When the concave grooves (3 in FIG. 1) are engaged with each other, and the buckle 4 is turned so as to be bent inward (back side) with the pivot support shaft 8 as a fulcrum, the claw-like convexity of the buckle is obtained. There is a mode in which the engagement of the groove 7 (3 in FIG. 1) of the upper portion of the belt 7 and the upper shoulder belt 21 is separated so that the upper shoulder belt 21 can slide. In FIG. 3A, a two-dot chain line B indicates a path through which the upper shoulder belt is passed through the buckle 4.

  In this first embodiment, the upper shoulder belt 21 is passed through the buckle 4 provided at the tip of the lower shoulder belt 22, and the upper shoulder belt is inserted into a locking projection such as a claw-like convex portion provided on the buckle side. While holding the inner concave groove temporarily, holding the buckle part with one hand, pulling the upper back belt further downward with the other hand, sliding it to make a clicking sound, The locking relationship between the claw-shaped convex portion (locking protrusion) and the groove on the inner side (back side) of the upper shoulder belt shifts in units of one pitch of the installation groove, so that the adjustment of the connection length can be narrowed down. . On the other hand, when releasing the locking relationship, the buckle is bent inward with the support rod as a fulcrum, so that the locking relationship between the claw-shaped convex portion (locking projection) and the groove on the inner side (back side) of the upper backpack belt is established. It can be released, and the upper carrying belt can be pulled upward and loosened to completely release the connection, adjust the length again, and make fine adjustments.

  Alternatively, as a second example, as shown in FIG. 3 (b), the buckle extends in the belt width direction so as to protrude from the side surface of the buckle without being bent inward (back side). By pushing the locking release pin 9 inward, the claw-shaped convex portion (locking projection) 7 provided on the buckle side is lowered (arrow C), so that the claw-shaped convex portion 7 of the buckle 4 and the upper shoulder belt 21 are lowered. There is an example in which the engagement of the concave grooves 3 is separated to allow the upper shoulder belt 21 to slide. When the lock release pin 9 is not pushed in, the lock release pin 9 is returned by the force of the spring and maintains the engaged state of the claw-like convex portion 7 and the concave groove 3 of the upper shoulder belt 21.

  In this second embodiment, the unlocking relationship between the upper back belt and the lower back belt is released by pushing the unlocking pin 9 on the side of the buckle inward. It is preferable in that the release can be performed more securely, and the upper and lower shoulder belts can be easily disengaged so that the school bag does not fall.

  In addition, as a third example, although not shown in the drawings, the locking release pin extending in the belt width direction provided to protrude from the side surface of the buckle is dropped into the groove by sliding in the belt length direction, As a result, the claw-shaped convex portion (locking projection) provided on the buckle side is lowered, and the engagement between the claw-shaped convex portion (lower backpack belt) of the buckle and the concave groove of the upper backpack belt is separated, and the upper side There is an example in which the back belt can be slid.

  Further, as a fourth mode example, as shown in FIGS. 4A and 4B, a claw-like convex portion (locking projection) 7 (FIG. 4B) is provided on the buckle portion 4, and The buckle portion 4 is rotated by engaging with the concave groove 3 (FIG. 4A), and the upper and lower shoulder belts having the concave groove 3 are introduced into the buckle 4 by a ratchet mechanism. There is an embodiment in which the rotating claw portion 24 is used.

  In this embodiment, the belt traveling rotation claw portion 24 is disposed on the introduction side of the buckle 4, and the belt traveling rotation claw portion 24 is buckled on the outermost side of the buckle 4 via the rotation support shaft 26 of the buckle. 4 is integrally provided at the foremost end of the buckle lever 23 attached to 4.

  As shown in FIG. 4 (a), the belt advancement rotating claw portion 24 preferably comprises a plurality of claw portions 241 and 242 of about 2 to 5 pieces, and the buckle lever 23 is moved to the claw portion 24. When raised to rotate in the direction of arrow R1 about the rotation support shaft 26, the plurality of claw portions 241 and 242 also rotate in the direction of arrow R2 about the rotation support shaft 26 of the buckle lever 23. It is configured to (rotate). When the claw portions 241 and 242 are rotated (rotated) in the direction of the arrow R2, when the upper shoulder belt 21 is inserted into the buckle 4, the claw portions 241 and 242 are engaged with the concave groove 3, and the upper shoulder is carried. The belt 21 is fed into the buckle 4. Since the belt travel rotation claw portion 24 has a ratchet mechanism, the upper belt 21 can be freely fed into the buckle 4 as desired by raising and lowering the buckle lever 23 many times.

  A locking member 27 is disposed inside the buckle 4 and inside the buckle lever 23, and a claw-like convex portion (locking) is formed at the end of the locking member 27 opposite to the buckle tip side. (Protrusions) 7 are provided, and the claw-shaped protrusions (locking protrusions) 7 mesh with the concave grooves 3 of the belt 21 carrying the upper back so that both belts are locked. FIG. 4B is an external perspective view of the buckle when the buckle lever 23 is raised, and the locking member 27 is rotatable about the rotation support shaft 28 of the locking member. However, when the buckle lever 23 is lowered, the locking member 27 is fixedly held, and the claw-shaped convex portion (locking projection) 7 is engaged with the concave groove 3. Regardless of the state of the buckle lever, the locking member 27 is normally biased toward the concave groove 3 by the force of a spring or the like (not shown), but a part of the locking member 27 is convex. By pushing the locking release button 25 formed and configured in the direction of the arrow P, the claw-like convex portion (locking projection) 7 is lifted in the direction of the arrow R3 around the rotation support shaft 28, and the groove 3 Is disengaged, and the belts 21 and 22 can be disengaged. Since the unlocking button 25 has its head exposed on the surface of the buckle lever 23 even when the buckle lever 23 is lowered through the opening 29 opened at the center of the buckle lever 23, the arrow An operation of pushing in the P direction can be easily performed.

  The buckle 4 can be provided on the upper shoulder belt 21 side without being provided on the lower shoulder belt 22, but in this case, the groove 3 is provided in the lower shoulder belt 22. Since it becomes difficult to increase the forming length and the adjustable range of the length of the shoulder belt becomes small, it is preferable to configure both belts 21 and 22 so that the buckle 4 is positioned as much as possible. .

  In addition, the concave groove 3 may be configured to face outward, but it may be configured to face inward (body side) from the viewpoint of appearance and prevention of dirt. The same applies to the direction of the buckle lever 23 and the direction of the lock release button 25. Further, the upper shoulder belt on the tip side of the engagement portion between the claw-shaped convex portion (locking projection) 7 and the concave groove 3 is connected to the body through an opening 30 provided on the belt near the base of the buckle 4. Either turning to the side or turning to the outside on the opposite side can be employed.

  In any of the above-described embodiments, one of the plurality of grooves 3 of the upper back belt 21 (or the lower back belt 22) has an inclined surface, and the other has a saw-toothed shape. It is preferable that the groove is continuously cut in a vertical plane. This is because the inclined surface can be pulled without any trouble when the belt is slid and pulled, and the vertical surface can prevent the belt from sliding and loosening in the opposite direction.

  In order to prevent the upper and lower shoulder belts 21 and 22 from being easily disengaged, it is also preferable that the upper shoulder belt 21 that has passed through the buckle 4 has its tip passed through the belt loop 6. As shown in FIG. 3B, it is also preferable to provide a belt loop 6 made of a strong material such as a metal or a hard plastic, in the immediate vicinity of the buckle 4 or almost integrally with the buckle.

  It is also preferable that a cover band or a cover body (not shown) that covers the entire circumference of the side surface in the vicinity of the buckle portion is attached. This is to protect the buckle portion so that the engagement of the upper and lower backpack belts is not easily released. A hook-and-loop fastener is provided near both ends of the cover band or the cover body so that the buckle portion can be easily and reliably covered and opened repeatedly.

  The upper and lower back belts are connected at the same time when the length of the back belt is adjusted and fixed, but it is not always necessary to use it every day. However, every time the school bag is carried on the back, the length may be adjusted, finely adjusted, and fixed while confirming the weight to be felt in the state where the stored item is actually put. With the school bag of the present invention, the length of the shoulder belt can be finely adjusted in units of several millimeters. Therefore, such fine adjustment should be performed in accordance with the weight of the daily items, or not every day. However, it is preferable to perform it frequently whenever there is any change in that the effects of the school bag of the present invention can be enjoyed more.

  Once adjusted and fixed, cover the buckle with the cover band or cover body as described above, or the tip of the upper back belt so that the upper and lower back belts cannot be easily disconnected. It is preferable to attach a detachable widening or thickening member in the vicinity so that the upper belt is not easily pulled out of the buckle. Such a cover band, a cover body, or a member for widening or thickening can be made of leather, synthetic leather, synthetic resin, cloth, or the like.

  In the school bag of the present invention, a buckle may be provided at the tip of the upper back belt and a concave groove may be provided inside the lower back belt, but in that case, the lower back belt is elongated to the shoulder side to some extent. It is better to configure. This is to ensure the length adjustment allowance.

  However, in the school bag of the present invention, when the upper and lower shoulder belts are connected, it is preferable that the position where the buckle portion is located is from the waist portion to the vicinity of the waist portion because the buckle does not hit the body. In that respect, a structure in which a concave groove is provided inside the upper backpack belt as shown in the figure and a buckle is provided at the tip of the lower backpack belt is actually preferable.

  The school bag of the present invention is particularly effective when used in school bags for younger children with a small body, children with weak physical strength, or children in a growing period where their height is growing rapidly.

1: School bag body 2: Back belt 3: Groove 4: Buckle 5: Back rest 6: Belt loop 7: Claw-shaped convex (locking projection)
8: Rotating support shaft of buckle 9: Unlocking pin 21: Upper shoulder belt 22: Lower shoulder belt 23: Buckle lever 24: Belt traveling rotation claw portion 241, 242: Belt traveling rotation claw 25: Engagement Stop release button 26: rotation support shaft 27 of the buckle lever 27: locking member 28: rotation support shaft 29 of the claw-shaped convex portion (locking protrusion) 29: opening 30 opened at the center of the buckle lever 23: buckle 4 Opening on the belt near the root

Claims (7)

  Adjusting and fixing the length of the shoulder belt, the upper or lower shoulder belt having locking protrusions formed in the belt width direction, and a plurality of belt belts formed at predetermined intervals in the belt width direction where the locking protrusions are locked. A school bag comprising a slide type adjuster mechanism comprising a lower or upper shoulder belt having a concave groove.   Locking protrusions formed in the belt width direction are formed on the lower shoulder belt, and a plurality of concave grooves formed at predetermined intervals in the belt width direction to which the locking protrusions are locked are formed on the upper shoulder belt. The school bag according to claim 1, wherein the school bag is formed.   The locking projection is provided on the buckle portion, and the locking relationship between the locking projection and the plurality of concave grooves is released by pushing a locking release pin provided on a side surface of the buckle portion. The school bag according to claim 1, wherein the school bag is configured.   The locking projection is provided on a buckle portion, and the locking relationship between the locking projection and the plurality of concave grooves is released by raising the buckle portion in a direction perpendicular to the belt plane direction. The school bag according to claim 1 or 2, wherein   The locking protrusion is provided on the buckle portion, and further, the belt propulsion claw for engaging the concave groove and introducing the upper or lower shoulder belt having the concave groove into the buckle. The school bag according to claim 1, further comprising a portion.   The school bag according to any one of claims 1 to 5, wherein the plurality of concave grooves are formed with a total length L of 15 to 30 cm in a longitudinal direction of the belt.   The school bag according to any one of claims 1 to 6, wherein the locking projection is provided on a buckle portion, and a cover band is provided to cover the entire side surface of the buckle portion.

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