JP2012239841A - Satchel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a satchel that is easy to shoulder on the back and that causes no tiredness, by making a feeling of pressure on the waist lighter to a level of 70-80% and reducing a bodily sensation of a load on the whole body including the waist, shoulder, etc.SOLUTION: In the satchel having a satchel body and two shoulder straps, each shoulder strap 2 is bisected in the thickness direction of the shoulder strap at the end on the shoulder side. Of the bisected shoulder straps; (a) the tip end of an inner strap 2A on the inside is rockably engaged through an open ring 5 situated away from a satchel back plate 4 surface in the normal direction of the plate 4; and (b) the tip end of an outer strap 2B on the outside is locked with a rivet 6 on the satchel back plate 4 surface. Further, the straps are configured such that, in the height direction of the satchel, the locked position Q of the rivet in (b) is in a lower position than the engaged position P between the open ring and the tip end of the inner strap 2A in (a).

Description

  The present invention relates to a school bag, and when it is carried on the back, the school bag does not come to warp backward, it can be brought into close contact with the body at a high position, the school bag can be prevented from shaking and moving up and down, and the load weight experienced by them. It is related with the school bag which can make a very small thing and can remarkably reduce the burden which a user feels by carrying on the back.

  In particular, the present invention relates to a school bag that has a configuration in which the pressure applied to the upper part of the waist of a child carrying the child is reduced, thereby significantly reducing the load experienced by the waist and the whole body.

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

  On the other hand, the child's height and other physiques are not larger than the size of the school bag, and with the larger school bag, the pressure applied to the upper back of the child's shoulder, especially on the shoulder, has increased. .

  However, focusing on the pressure applied to the upper part of the child's waist and reviewing the structure of the school bag itself to alleviate it, there has been little research in the past except for the improvement of the back ring. Speaking of conventional school bags, it is assumed that the outer edge shape of the back belt is curved, an elastic core material is placed in the back belt to allow fit and load distribution, It could be said that the improvement of the shape, etc., was focused only on the area around the shoulder and the upper back.

  Here, the situation that makes elementary school students in their physical growth period feel the pressure and load of large size and heavy weight on their shoulders, waist, and whole body is not desirable in terms of growth and health. When you need to move the body of the heel on the way, avoid situations where you feel the pressure / load of large dimensions / heavy objects on your shoulders / waist and whole body as much as possible. is there.

  The structure and configuration of the school bag on the back of the school bag is an important factor that determines the weight of the body felt as a load on the shoulders, waist, and body when an elementary school child carries the school bag. For this reason, various ideas have been made for the configuration of the shoulder belt even before the school bag is enlarged.

  For example, a proposal that the width of the shoulder belt should be wider at the shoulder portion by about 2 to 3 times or more than the thinnest portion, and that the position of the upper mounting portion of the shoulder belt can be adjusted left and right ( Patent Document 1), or a proposal to make it possible to adjust the position of the lower mounting portion of the shoulder belt to the left and right has been made (Patent Document 2).

  In addition to the leather material, a proposal has been made on a shoulder belt using a foamed resin material having a cushioning property formed in a wide width (Patent Document 3).

  However, these proposals do not leave the area of improvement of the shoulder belts that have been used in the past, and the belt mounting position can be shifted slightly to the left and right in accordance with changes in the physique during the six years of elementary school. However, it is not sufficient to use a foam resin material having a cushioning property in combination with the pressure felt at the upper part of the waist and the weight perceived by the whole body due to the pressure. It was.

  On the other hand, in order to dramatically reduce the sensation weight perceived by the upper waist and the whole body, with the school bag on the back, the school bag naturally becomes a more suitable position relative to the body. It is important to do so. Specifically, the point is that the school bag does not warp backward and is in close contact with the body at a high position.

  From such a viewpoint, the upper part of the back support part of the school bag main body and the upper part of the shoulder belt are connected by a string-like connector, and the connecting part of the shoulder belt with the string-like connector by the string-like connector; It has been proposed that the vicinity thereof is lifted upward, and as a result, the user is less likely to get tired (Patent Document 4).

  In addition, for the purpose of providing a school bag that is stable, less tiring, and easy to carry, two shoulder belts are extended obliquely upward from the back surface, and the upper surface of the back surface extends from the top of the back of the main unit. Sewing at the lower part to form a fixed upper side and sew it to the back of the main body. Sewing a horizontal strip on the back of the main body above the fixed upper side, and fasten one end of the suspension band to it. The other end is fastened to the upper part of the shoulder belt spaced from the fixed upper side, and the main body of the school bag is always located above the back. There is a proposal that the user feels close and stable and the user is less tired (Patent Document 5).

  However, the proposals described in these Patent Documents 4 and 5 are difficult for elementary school children and the like to successfully connect the string-like connector (Patent Document 4) and the suspension band (Patent Document 5), Even if the belt body is pulled and connected, the intended effect cannot be exhibited when the back belt body is made of leather or synthetic leather. Eventually, further improvements were demanded, such as the load weight experienced by the user and the good mobility around the shoulder belt.

JP 2006-304929 A Utility Model Registration No. 3152773 Utility Model Registration No. 3138960 JP 2002-369707 A JP 2005-304827 A

  In view of the above points, the object of the present invention is to compare the pressure perceived at the upper part of the waist and the perceived weight perceived by the whole body even when the weight is actually the same level as compared with the case of a conventional belt. The pressure applied to the waist can be felt lightly to a level of about 70 to 80%, and the user's mobility around the shoulder belt is ensured. -To provide a school bag that reduces the burden experienced by the whole body, such as the shoulders, and is easy to carry and not feel tired.

The school bag of the present invention that achieves the above-described object has the following configuration (1).
(1) In a school bag having a school bag body and two backpack belts, each backpack belt is divided into two in the thickness direction of the backpack belt at the shoulder end,
(A) The tip of the inner belt on the inner side is slidably engaged through an opening ring located at a position spaced apart from the back plate surface of the backpack in the normal direction of the back plate,
And,
(B) The tip of the outer belt on the outside is locked to the back plate surface of the school bag with a tack,
In the school bag height direction, the barb stop position Q of (b) is configured to be lower than the engagement position P of the opening ring of (a) and the tip of the inner belt. A school bag.

Moreover, in the school bag of this invention, Preferably it consists of a structure in any one of the following (2)-(5).
(2) Difference H between the engagement position P of the front end of the outer belt in (b) and the engagement position P of the front end of the inner belt in (a) in the school bag height direction. Is 5-30 mm, The school bag according to (1) above, wherein
(3) A difference H between the engagement position Q of the outer belt of (b) by the hooked position Q and the engagement position P of the open ring of the (a) and the inner belt in the school bag height direction. Is 15-30 mm, The school bag according to the above (1) or (2).
(4) The school bag according to any one of the above (1) to (3), wherein a distance W between the back plate surface of the school bag of (a) and the opening ring is 10 mm to 30 mm.
(5) The school bag according to any one of the above (1) to (4), wherein a distance W between the back plate surface of the school bag of (a) and the opening ring is 15 mm to 25 mm.

  According to the school bag according to the first aspect of the present invention, it is possible to provide a school bag that can reduce the pressure applied to the upper part of the waist when a low-grade elementary school student is carried on the back.

  According to the school bag of the present invention, the whole school bag can be carried close to the body at a high position, and in reality, even with the same level of weight, the pressure applied to the waist, the sensory weight felt to the whole body, Compared to the case of a conventional belt, it can be felt lightly, and in particular, the pressure applied to the waist can be felt lightly to a level of about 70 to 80%. Good mobility is ensured, and by doing so, it is possible to provide a school bag that is easy to carry and does not feel tired by reducing the load experienced by the whole body such as the shoulders as well as the waist.

  Being able to reduce the weight of the experience and ensuring good mobility not only contributes to the growth and health of the child's physique, but also requires agile and agile body movement while on the way to school. It is possible to do this even when the child is in trouble, and this also helps to protect children from unexpected accidents and incidents.

  Further, according to the school bag of the present invention according to claim 2, it is possible to provide a school bag having the effect of the school bag of the present invention according to claim 1 described above more clearly and larger.

  Further, according to the school bag of the present invention according to claim 3, it is possible to provide a school bag having the effect of the school bag of the present invention according to claim 1 or claim 2 more clearly and larger.

  Further, according to the school bag of the present invention according to claim 4, it is possible to provide a school bag having the effect of the school bag of the present invention according to claim 1, claim 2 or claim 3 more clearly and larger. Can do.

  Further, according to the school bag of the present invention according to the fifth aspect, the effect of the school bag of the present invention according to the first, second, third, or fourth aspect described above is more clearly and larger. A school bag can be provided.

(A) shows one example of the embodiment of the school bag according to the present invention, and is a side view of a main part when a shoulder side end portion of a shoulder belt is engaged or locked with a school bag back plate as viewed from the side. (B) is the principal part enlarged view which expanded and showed the part engaged or latched. The backpack belt shown in FIG. 1 will be described as an embodiment of the school bag according to the present invention. FIG. 1 is a schematic external view of the belt shown in FIG. FIG. The other example of embodiment of the school bag concerning this invention is shown, and it is the principal part side view which looked at the part which the shoulder side edge part of a backpack belt engages with a school bag backplate. It is the external appearance side view which showed the state which carried the backpack concerning this invention on the model. FIG. 5 is a side view of a main part of a shoulder bag other than that of the present invention as viewed from the side, showing a portion where a shoulder side end portion of a shoulder belt engages with a backpack of a school bag. It is explanatory drawing which showed the place of the school bag which was employ | adopted in the Example and measured the pressure applied with a load.

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

  As shown in FIG. 1A, the school bag of the present invention has a school bag body 1 and two backpack belts 2 (only one is shown), and the backpack belt 2 is on the shoulder side. 2A is divided into two in the thickness direction of the shoulder belt, and among the two divided shoulder belts 2A and 2B, (a) an inner belt (hereinafter simply referred to as "inner belt") 2A The front end portion of the back plate 4 is engaged with the swing ring 5 (shown by an arrow M) through the open ring 5 located at a position spaced apart from the back surface of the back plate 4 in the normal direction of the back plate 4, and (b) 2B (hereinafter simply referred to as “outer belt”) 2B is locked to the back surface 4 of the back of the backpack 6 by a barb 6 and further in the direction of the back of the backpack (arrow 11 shown in the figure). b) The position of the tack 6 of the outer belt 2B (Center position) Q, characterized in that configured to be positioned lower than the engagement position P of the tip end portion of the opening ring 5 and the inner belt 2A of the (a).

  In FIG. 1, 3 is a back ring, and 7 is a back (also called “cover”). Further, “position Q of the tacking stopper 6” means the position of the center point of the tacking stopper 6 portion.

  Further, the “engagement position P between the opening ring 5 and the inner belt 2 </ b> A” refers to an opening when the inner belt 2 </ b> A is lifted to the maximum and vertically as shown in an enlarged view in FIG. This means a position where the ring 5 and the inner belt 2A are in contact with each other. If there is a difference in the height of the positions at both ends of the inner belt 2A, an average value thereof is taken and a difference H described later is taken. Find the value of. In the present invention, the “open ring” means a connection ring having a so-called openable shape, and in general, there are a triangular ring, a square ring, an oval ring, etc., and a D ring. There is a type of the so-called type, which has been conventionally used to connect a backpack belt and a backpack body with a backpack.

  In the school bag of the present invention, the shoulder belt 2 is divided into two in the thickness direction near the end on the shoulder side, and is branched into an inner belt 2A on the inner side and an outer belt 2B on the outer side.

  “Divided into two in the thickness direction” means that both the inner belt 2A and the outer belt 2B are divided into two in the thickness direction while maintaining a width comparable to the main body of the belt 2. For example, even if the width of the main body of the shoulder belt 2 remains the same or is narrower than the width of the main body, even in the smallest case, the width of about 50% is maintained while maintaining the width. It means that it is in a branched state. This is because, even after branching, it is important to have an appropriate width so that both the inner belt 2 </ b> A and the outer belt 2 </ b> B are subjected to an appropriate backpack load. “Divided into two in the thickness direction” includes cases where the film is divided into two parts so as to have the same thickness, and it is not always necessary to have the same thickness. If not, there may be a thickness difference of about 1: 2 to 1: 3.

  It should be noted that, in this case, it is assumed that it is used in the case where it is used by fixing both ends appropriately with a relatively thin and small thing such as a string-like object without dividing the main body of the shoulder belt. However, since it is difficult to maintain the effect of the present invention under severe conditions for six years in elementary school, it cannot be adopted. In addition, it is possible to use another short belt-like one without being divided, and both ends of which can be fastened with hooks or hooks. There is a problem and it cannot be adopted.

  FIG. 2 is a schematic external view of the shoulder belt 2 shown in FIG. 1 as seen from the plane direction (upper direction in FIG. 1). The tack 6 shown in FIG. 1 is released and the outer belt 2B is moved upward. It is the principal part plane schematic which showed the state extended in (horizontal direction). Reference numeral 6 ′ denotes a hole portion that is locked by the tack stop 6. As shown in FIG. 2, both the inner belt 2 </ b> A and the outer belt 2 </ b> B have a width of about 50 to 100% as compared with the main body of the shoulder belt 2 as described above. This is because it is important to have an appropriate width so that both the inner belt 2A and the outer belt 2B are appropriately loaded. In some cases, the outer belt 2B may be formed with a width of about 100 to 150% as compared with the main body of the shoulder belt 2 and rather wider than the main body. Since durability is also improved, it is preferable.

  As shown in FIG. 1, the front end portion of the inner belt 2A can swing through an open ring 5 that is spaced from the back surface 4 of the school bag in the normal direction of the back plate 4 (arrow M shown). Is engaged.

  This “at a position spaced apart from the back surface 4 of the school bag in the normal direction of the back plate 4” means the distance between the back plate 4 and the opening ring 5 shown in FIGS. 1 (a) and 1 (b). This means that W exists at least in a size of several mm, not zero. Preferably, the separation distance W is 10 mm to 30 mm. The position of the opening ring 5 is considered to be a standard state when it is in the highest position in the engagement relationship with the back ring 3 and the inner belt 2A, and in that state, the distance from the center axis of the opening ring 5 to the back plate W is obtained. According to the knowledge of the present inventors, the more preferable range of the separation distance W is 15 mm to 25 mm. If the separation distance W is too large, it is difficult to obtain the effect of bringing the main body of the school bag into close contact with the body, and the direction in which the body warps backward. Since the state of becomes stronger, it is not preferable.

  In addition, the front end portion of the inner belt 2A refers to a front end in a state of passing through the opening ring 5 in the above-described standard state (FIG. 1), and does not refer to the leading edge that is bent up and goes up.

  Furthermore, the front end portion of the outer side belt 2B on the outside is locked to the back surface 4 of the school bag by a barb 6 so that it cannot swing freely in the front-rear direction of the user.

  Further, in the school bag height direction (the direction of arrow 11 in FIG. 1), the position Q of the barb 6 of the outer belt 2B is the engagement position P of the opening ring 5 and the tip of the inner belt 2A described above. It is comprised so that it may become a lower position. Thus, it is a major feature of the present invention that the branched upper and lower belts 2A, 2B are engaged or engaged with each other in this positional relationship.

  By configuring the whole as described above, the inner belt 2A moves in the longitudinal direction of the shoulder person to some extent while supporting the school bag with the contact point (P) with the highest position of the opening ring 5 as a supporting point according to the movement of the shoulder. The outer belt 2 </ b> B supports the school bag by suspending the weight of the school bag from above while firmly pulling and pulling it against the back side against the back of the school bag body. The entire load is distributed and applied to both belts 2A and 2B having different functions. And, as shown in the model in FIG. 4, the school bag is in close contact with the user's back especially at the upper part thereof, so that the pressure applied to the upper part of the waist is remarkably reduced, and the user can feel the weight perceived thereby. It becomes easy to move for the weight of the school bag.

  FIG. 3 schematically shows a case where the belt length adjusting member 8 is attached to the outer belt 2B. If such a belt length adjusting member 8 is used, the effect of the outer belt 2B (the combined effect of the lifting effect and the pulling effect) can be adjusted to the height growth and physique improvement from the first grade to the sixth grade. ) Can be adjusted. As the belt length adjusting member 8, a buckle type member conventionally used in a shoulder bag, a rucksack belt, or the like can be used.

  The positional relationship between the position Q of the hook 6 of the outer belt 2B and the engagement position P of the opening ring 5 and the front end of the inner belt 2A is such that the position of P is lower than the position of Q. Since the lifting effect of the outer belt 2B becomes too large, the balance of the above-mentioned combined effect is lost, and the weight load is applied only to the shoulder, which is not desirable, and the effect of the present invention cannot be obtained.

  According to the study by the present inventors, the difference H between the position P and the position Q shown in FIG. 1 is preferably 5 to 30 mm, and the optimum range of the H value is relatively narrow. Preferably it is 15-30 mm.

  According to the knowledge of the present inventors, the length L from the root of the branch point of the outer belt 2B shown in FIG. It is preferable because it can cope with the growth of 6 years.

  In addition, as shown in FIG. 2, the outer edge shape of the shoulder belt from the shoulder periphery to the tip portion is generally curved toward the neck side so that the shoulder belt fits more closely to the user's body, and The degree of curvature of the outer edge line 9A on the neck side is larger than the degree of curvature of the outer edge line 9B on the outer side (arm side) in both the inner belt 2A and the outer belt 2B (the radius of curvature is small). It is preferable to do. This is because the load is applied more dispersedly according to the three-dimensional shape of the shoulder, neck and chest. That is, it is preferable in terms of load distribution that the belt bends at the outer edge and that the degree of curve be different between the neck side and the outside (arm side). As with any of 2B, either one or both should do so.

  FIG. 5 shows an example of a school bag other than the present invention for reference. The back belt 2 is a side view of a portion where the back belt 4 engages with the back plate 4, and the back belt 2 is particularly branched. Without being engaged, it is engaged with the opening ring 5 as it is. In such a structure, the separation distance W between the backpack 4 and the opening ring 5 is rather small that the sensible weight becomes smaller, and that the separation distance W is somewhat because the backpack body is away from the back. Today, when schoolbags have grown, it is common for lower-grade children to carry back for a long time, such as half an hour to one hour, without any mechanism to stop the warp. Is unsuitable.

Example 1, Conventional product 1, Conventional product 2
The present invention product (Example 1), the conventional product 1 and the conventional product 2 having the following specifications are prepared, and each of them is actually carried by two persons, a child A (height 125 cm) and a child B (height 109 cm). Then, the pressure applied to each part of the school bag was measured with each school bag carried on the back using a clothing pressure measuring device. Each school bag was measured with a 2 kg weight container.

As shown in FIG. 6, the measurement points are the waist (W), the back (B ₁ , B ₂ , B ₃ , B ₄ , B ₅ ), the right shoulder (S ₁ , S ₂ , S ₃ ), As the 12 points on the left shoulder (S ₄ , S ₅ , S ₆ ), take the measured value in the standing state and the continuous pressure curve in the walking state, and at the peak and valley of the curve The data value of each peak was calculated | required, and all the extract | collected data were averaged for every mountain part and trough part, and were calculated | required as the data of the walk (mountain) and walk (valley) in walking.

  Example 1 has the structure shown in FIG. 1, and W is 12 mm and H is 27.5 mm (20 mm at a low place, 35 mm at a high place, and an average value of H = 27.5 mm). Is.

  The conventional product 1 is a commercially available product having a structure in which the shoulder belt is not divided, and the W is 12 mm.

  The conventional product 2 is a commercially available product having a structure in which the shoulder belt is not divided, and the W is 7 mm.

  The results are shown in Table 1 (Child A) and Table 2 (Child B).

  As can be seen from this result, according to the school bag of the present invention, it can be seen that the load applied particularly to the waist is very small. It can also be seen that the effect of reducing the bodily sensation load during walking is greater than when standing.

  These effects were thought to be due to the fact that the load was well distributed by the two shoulder belts and that the load was well distributed by the two shoulder belts in a well-balanced manner corresponding to the movement of the body. .

  The impression of the school bag of the present invention by two children was that the burden felt by the user by carrying the back was small, and it was easy to move without getting tired even when carrying it.

  In particular, the child A, who is 125 cm tall, has a relatively small pressure applied to the upper part of the waist (W position in FIG. 6) even in the conventional example. The value was minimal when walking.

  In addition, in the case of a child B who is 109cm tall and corresponds to a lower grade, the pressure applied to the upper part of the waist (W position in FIG. 6) was considerably high in the conventional example, whereas this By using the school bag of the invention, a value was obtained in which a remarkable effect such that the level becomes 1/5 or less at the pressure during walking was observed. However, in the standing position, there is almost no difference from each conventional example, and the effect of the present invention is particularly apparent during walking exercise. By the way, regarding standing and walking, in general, standing state is overwhelmingly less than walking state when carrying a school bag on the way to school, etc. It is reasonable to place weights on the walking data.

1: School bag main body 2: Backpack belt 2A: Inner backpack belt 2B: Outer backpack belt 3: Back ring 4: Backpack of backpack 5: Opening ring 6: Claw stopper 6 ': Hole part locked by claw stopper 7: Backrest
8: Belt length adjusting member 9A: Outer edge line 9B on the neck of the backpack belt: Outer edge line on the outside (arm side) of the backpack belt 11: School bag height direction H: The front edge of the outer belt in the school bag height direction The difference between the locking position Q by hooking and the engagement position P between the opening ring and the inner belt front end W: The distance between the back plate surface of the school bag and the opening ring P: The relationship between the opening ring and the front end of the inner belt Alignment position Q: Locking position of the outer belt front end with a tack on the back plate surface of the school bag

Claims (5)

In the school bag having the school bag main body and the two shoulder belts, each shoulder belt is divided into two in the thickness direction of the shoulder belt at the shoulder side end portion, and the two shoulder belts,
(A) The tip of the inner belt on the inner side is slidably engaged through an opening ring located at a position spaced apart from the back plate surface of the backpack in the normal direction of the back plate,
And,
(B) The tip of the outer belt on the outside is locked to the back plate surface of the school bag with a tack,
In the school bag height direction, the barb stop position Q of (b) is configured to be lower than the engagement position P of the opening ring of (a) and the tip of the inner belt. A school bag.   A difference H between the engaging position Q of the outer belt of (b) by the hooking and the engaging position P of the opening ring of the (a) and the inner belt in the school bag height direction is 5 The school bag according to claim 1, which is ˜30 mm.   A difference H between the engagement position Q of the front end portion of the outer belt (b) and the engagement position P of the front end portion of the inner belt (a) in the school bag height direction is 15 The school bag according to claim 1, wherein the school bag is ˜30 mm.   The school bag according to any one of claims 1 to 3, wherein a distance W between the back plate surface of the school bag (a) and the opening ring is 10 mm to 30 mm.   The school bag according to any one of claims 1 to 4, wherein a distance W between the back plate surface of the school bag (a) and the opening ring is 15 mm to 25 mm.

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