JP3224222U - Shoulder slip prevention device - Google Patents

Abstract

【課題】ランドセルの左右背負いベルトの肩当部が広がって肩からずれるのを防止し、背負い易くする肩ずれ防止具を提供する。【解決手段】ランドセルに取付けた左右一対の背負いベルト２、２を構成する肩当部３の表皮部とクッション部との間に支持される取付部の一側に、前記肩当部３の内側縁から露出する中心に芯軸を有した円柱状のガイド軸部１１を一体に設けてなる第１ベルト連結部９と、一対のベルト部２１ａ、２１ｂのそれぞれ一端に前記第１ベルト連結部９のガイド軸部１１と着脱可能に連結する可動片２３を接続し、前記ベルト部２１ａ、２１ｂの他端に雄型片３１と雌型片３５とからなる接続具３０を着脱可能に取付けた調節ベルト体２０とからなることを特徴とする。【選択図】図２An object of the present invention is to provide a shoulder slip prevention device that prevents a shoulder contact portion of a left and right shoulder belt of a school bag from spreading and slipping from the shoulder, thereby facilitating the shoulder. SOLUTION: One side of an attachment portion supported between a skin portion and a cushion portion of a shoulder abutment portion 3 constituting a pair of left and right shoulder belts 2 and 2 attached to a school bag, from an inner edge of the shoulder abutment portion 3 A first belt connecting portion 9 integrally formed with a columnar guide shaft portion 11 having a core shaft at the exposed center, and a guide of the first belt connecting portion 9 at one end of each of the pair of belt portions 21a and 21b. An adjustment belt body in which a movable piece 23 detachably coupled to the shaft portion 11 is connected, and a connecting tool 30 comprising a male piece 31 and a female piece 35 is detachably attached to the other ends of the belt portions 21a and 21b. 20. [Selection] Figure 2

Description

本考案は、登下校する学童が背負うランドセルの背負いベルトが肩からずり下がって開くのを防止して背負い易くする肩ずれ防止具の改良に関する。 The present invention relates to an improvement in a shoulder slip prevention device that prevents a backpack of a school bag carried by a schoolchild going to and from school from falling down from the shoulder and opening it easily.

従来、学童が使用するランドセルは、教科書や副教材、さらには体操具などを収容するためかなりの重量となる。また、昨今、教育現場においても文部科学省の新学習要領に示すごとく、２０２０年から情報教育・ＩＣＴ活用教育が行われることとなった。 Conventionally, school bags used by schoolchildren are quite heavy because they contain textbooks, auxiliary materials, and gymnastics. Recently, information education and ICT utilization education have been conducted from 2020, as indicated in the Ministry of Education, Culture, Sports, Science and Technology's new learning guidelines.

そのため、学童は日常的にタブレット型端末やノートパソコンなどのディスプレイパネルを備えた板状の電子機器を使用して授業を受けることとなる。そのため、学童は重量（４００ｇから７００ｇ）のある電子機器を登下校時にランドセルに収納して持ち運ばなければならなくなる。特に１年生から３年生までの低学年の学童にとって、重いランドセルを背負っての通学はかなりの負担となる。 For this reason, school children routinely take classes using plate-shaped electronic devices equipped with a display panel such as a tablet-type terminal or a notebook computer. For this reason, school children must carry heavy electronic devices (400g to 700g) in school bags when they go to and from school. Especially for lower grade school children from 1st grade to 3rd grade, attending school with heavy school bags is a considerable burden.

一方、ランドセルに取付けてある背負いベルトは、学童の身長にあわせてある程度長さを調節することが可能に形成してあるが、身長が低い低学年、特に小柄な学童は背負いベルトを調整しても重いランドセルを背負うと、その重さで背負いベルトの肩当部が学童の肩からずり落ちて広がりやすい。また、背負いベルトが肩からずり落ちて広がると低学年の学童にとってランドセルの重心が下方に移動するため、より重くなって背負いにくくなる。さらに、背負いベルトが肩からずり下がって広がった状態での歩行は、ランドセルが左右に揺れて歩きにくく疲れやすい。さらにはまた、ランドセルが搖動すると収納した教科書や副教材などが傷みやすいだけでなく、ランドセルに収納した電子機器の故障の原因となる虞がある。また、背負ったランドセルが安定しないと歩行中に身体が左右にブレて歩行が危険であるなどの多くの問題点を有している。 On the other hand, the shoulder belt attached to the school bag is formed so that the length can be adjusted to some extent according to the height of the schoolchild, but for lower grades with low height, especially small schoolchildren, adjust the shoulder belt. If you carry a heavy school bag on your back, the shoulder of the belt carrying your shoulder will slip off the shoulder of the schoolchild and spread easily. Also, if the shoulder belt spreads down from the shoulder, the center of gravity of the school bag moves downward for lower grade school children, making it heavier and less likely to carry. Furthermore, walking with the shoulder belt extending down from the shoulder is difficult to walk because the school bag swings from side to side. Furthermore, when the school bag swings, not only the stored textbooks and supplementary teaching materials are easily damaged, but also there is a possibility of causing a failure of the electronic device stored in the school bag. In addition, if the backpack is not stable, there are many problems such as a risk of walking because the body shakes left and right during walking.

そのため、ランドセルの背負いベルトが肩からずれて広がるのを防止して互いの背負いベルトの間に広がり防止用の連結ベルトを取付けてランドセルを背負い易くしてあるものが知られている（例えば、特許文献１、２参照）。 For this reason, it is known that the backpack of the school bag is prevented from spreading out of the shoulder and spreads so that the school bag can be easily carried on the back by attaching a belt for preventing the spread between the belts. References 1 and 2).

実用新案登録第３１５２９１７号公報Utility Model Registration No. 3152917 実用新案登録第３２２０９５９号公報Utility Model Registration No. 3220959

しかし、これらの連結ベルトは、ランドセルの背負いベルトに取付ける際、いずれもそれぞれベルト部の一端を背負いベルトの任意個所に巻きつけて装着し、取り外しができない構造である。そのため、不要時には連結具のベルト部分が下方に垂れ下がりぶらぶら状態になるため邪魔である。さらには、垂れ下がったベルト部分がぶらぶらすると、歩行中に木の枝やすれ違う車両に引っ掛かる可能性が有り、非常に危険であるなどの問題点を有している。 However, when these connecting belts are attached to the backpack of the school bag, each of the connecting belts has a structure in which one end of the belt portion is wound around an arbitrary portion of the backpack and cannot be removed. For this reason, the belt portion of the connector hangs downward when it is not needed, and is hindered. Furthermore, if the hanging belt part hangs, there is a possibility that it may be caught on a vehicle with different tree branches during walking, which is very dangerous.

そこで、本考案は、背負いベルトの肩ずれによる広がりを防止するいわゆるチェストベルトを簡単に背負いベルトに着脱可能にすることにより、装着時には背負いベルトの広がりを防止してランドセルを安定させて学童が安全に登下校することができ、また、不使用時にはベルトがランドセルから垂れ下がるのを防止するため簡単に取り外して収納することにより紛失を防止することを目的とする。 Therefore, the present invention makes it easy to attach and detach the so-called chest belt that prevents the shoulder belt from spreading due to shoulder slippage, so that the backpack can be prevented from spreading at the time of wearing, and the school bag is stabilized and the schoolchild is safe. The purpose is to prevent the belt from being lost by simply removing it and storing it in order to prevent the belt from hanging down from the school bag when not in use.

請求項１の考案は、ランドセル１に取付けた左右一対の背負いベルト２、２を構成する肩当部３の表皮部４とクッション部５との間に支持される取付部１０の一側に、前記肩当部３の内側縁から露出する中心に芯軸１２を有した円柱状のガイド軸部１１を一体に設けてなる第１ベルト連結部９と、一対のベルト部２１ａ、２１ｂのそれぞれ一端に前記第１ベルト連結部９のガイド軸部１１と着脱可能に連結する可動片２３を接続し、前記ベルト部２１ａ、２１ｂの他端に雄型片３１と雌型片３５とからなる接続具３０を着脱可能に取付けた調節ベルト体２０とからなることを特徴とする。また、前記第１ベルト連結部９は、肩当部３の表皮部４とクッション部５との間に支持される扁平で縦長に形成した取付部１０の一側に、中心に芯軸１２を有した円柱状のガイド軸部１１を一体に形成し、該ガイド軸部の上方には芯軸１２をなくして先細に形成した挿入部１５を設け、下方には肩当部３の下部に縫着固定する停止部１６を一体に設けてなることを特徴とする。さらには、前記ガイド軸部１１は、中心に設けた芯軸１２の周囲にクッション性を有する緩衝部１７を設けてなることを特徴とする。さらにはまた、前記ガイド軸部１１は、芯軸１２の周囲に設けた緩衝部１７と、取付部１０の中心に設けたクッション性を有する緩衝板部１８とを一体に設けてなることを特徴とする。また、前記可動片２３は、前記ベルト部２１ａ、２１ｂの一端を装着するベルト孔２５を設けた接続部２４と、前記第１ベルト連結部９のガイド軸部１１に着脱可能に装着する円筒状に形成した軸受部２６とを一体に設けてなり、該軸受部の軸心方向に設けた挿通孔２７の一側面に前記ガイド軸部１１のガイド部１３を挿通する挿通溝部２８を設けてなることを特徴とする。 According to the first aspect of the present invention, on one side of the attachment portion 10 supported between the skin portion 4 and the cushion portion 5 of the shoulder portion 3 constituting the pair of left and right shoulder belts 2, 2 attached to the school bag 1, A first belt connecting portion 9 integrally formed with a columnar guide shaft portion 11 having a core shaft 12 at the center exposed from the inner edge of the shoulder abutment portion 3, and a pair of belt portions 21a and 21b, respectively, A movable piece 23 detachably connected to the guide shaft portion 11 of the first belt connecting portion 9 is connected, and a connecting tool 30 comprising a male piece 31 and a female piece 35 is connected to the other end of the belt portions 21a and 21b. It consists of the adjustment belt body 20 attached so that attachment or detachment is possible, It is characterized by the above-mentioned. Further, the first belt connecting portion 9 has a core shaft 12 at the center on one side of a flat and elongated mounting portion 10 supported between the skin portion 4 and the cushion portion 5 of the shoulder abutment portion 3. The cylindrical guide shaft portion 11 is integrally formed, the insertion portion 15 formed by tapering without the core shaft 12 is provided above the guide shaft portion, and the lower portion of the shoulder abutment portion 3 is sewn and fixed below. The stop part 16 which performs is integrally provided. Further, the guide shaft portion 11 is characterized in that a cushioning portion 17 having cushioning properties is provided around a core shaft 12 provided at the center. Furthermore, the guide shaft portion 11 is formed by integrally providing a buffer portion 17 provided around the core shaft 12 and a cushioning plate portion 18 having cushioning properties provided at the center of the mounting portion 10. And The movable piece 23 has a cylindrical shape that is detachably attached to the connecting portion 24 provided with a belt hole 25 for attaching one end of the belt portions 21a and 21b and the guide shaft portion 11 of the first belt connecting portion 9. And an insertion groove portion 28 through which the guide portion 13 of the guide shaft portion 11 is inserted in one side surface of the insertion hole 27 provided in the axial direction of the bearing portion. It is characterized by that.

したがって、肩ずれ防止具８は、左右の背負いベルト２、２の肩当部３、３の内側縁部にそれぞれ位置させた第１ベルト連結部９に設けたガイド軸部１１の挿入部１５から調節ベルト体２０の可動片２３をそれぞれ挿通してベルト軸部１１に可動片２３を上下動可能に狭着するだけの簡単な操作で調節ベルト体２０を第１ベルト連結部９に装着することができる。また、調節ベルト体２０の各ベルト部２１ａ、２１ｂの一端に設けた雌雄型の接続具３０の一方の雄型片３１と他方の雌型片３５を学童の胸の前側で連結するだけの簡単な操作で装着することができる。したがって、この肩ずれ防止具８を背負いベルト２に取付けたことにより、重いランドセル１を背負って走っても背負いベルト２が幅方向に広がらず肩からずれ落ちる心配がない。さらには、登下校中におけるランドセル１の揺動を防止することができるので、低学年の学童でも疲れることなくランドセル１を背負うことができる。さらにはまた、この背負いベルトの肩ずれ防止具８は、不使用時には調節ベルト体２０の可動片２３をベルト軸部１１の上方に引き上げて挿入部１５から引き抜くことにより、簡単に取り外ずして収納することができるので、調節ベルト体２０の紛失を防止することができ、且つ、ベルト部２１のぶら下がりによる不慮の事故を防止することができる。 Therefore, the shoulder slip prevention tool 8 is adjusted from the insertion portion 15 of the guide shaft portion 11 provided in the first belt connecting portion 9 positioned at the inner edge portion of the shoulder abutment portions 3 and 3 of the left and right shoulder belts 2 and 2. The adjustment belt body 20 can be attached to the first belt connecting portion 9 by a simple operation of inserting the movable piece 23 of the belt body 20 and narrowing the movable piece 23 to the belt shaft portion 11 so as to move up and down. it can. In addition, one male piece 31 and the other female piece 35 of the male and female connector 30 provided at one end of each of the belt portions 21a and 21b of the adjustment belt body 20 are simply connected to the front side of the schoolchild's chest. It can be installed with simple operation. Therefore, by attaching this shoulder slip prevention device 8 to the shoulder belt 2, even if the shoulder bag 1 runs with the heavy school bag 1, the shoulder belt 2 does not spread in the width direction and there is no fear of slipping off the shoulder. Furthermore, since the school bag 1 can be prevented from swinging while going to and from school, even a lower grade school child can carry the school bag 1 without getting tired. Furthermore, the shoulder belt shoulder slip prevention device 8 can be easily removed by pulling up the movable piece 23 of the adjustment belt body 20 above the belt shaft portion 11 and pulling it out from the insertion portion 15 when not in use. Therefore, it is possible to prevent the adjustment belt body 20 from being lost, and to prevent an unexpected accident caused by the hanging of the belt portion 21.

請求項６の考案は、ランドセル１に取付けた左右一対の背負いベルト２、２を構成する肩当部３、３の表皮部４と同じ形状の縦長で幅広に形成した取付部１０１の一側に前記肩当部３の内側縁から露出する円柱状で中心に芯軸１１２を設けたガイド軸部１１１を一体に形成してなる第２ベルト連結部９１と、一対のベルト部２１ａ、２１ｂのそれぞれ一端に前記第２ベルト連結部９１のガイド軸部１１１と着脱可能に連結する可動片２３を接続し、前記ベルト部２１ａ、２１ｂの他端に雄型片３１と雌型片３５とからなる接続具３０を着脱可能に取付けた調節ベルト体２０とからなることを特徴とする。また、前記ガイド軸部１１１は、中心に設けた芯軸１１２の外周にクッション性を有する緩衝部１１７を設け、該ガイド軸部の上方には中心に設けた芯軸１１２をなくして先細に形成した挿入部１５を形成し、ガイド軸部１１の下方に設けた停止部１６を前記肩当部３、３の下方に縫着固定してなることを特徴とする。さらには、前記ガイド軸部１１１は、芯軸１１２の周囲に設けた緩衝部１１７と、取付部１０の中心に設けたクッション性を有する緩衝板部１１８とを一体に設けてなることを特徴とする。さらにはまた、前記可動片２３は、前記ベルト部２１ａ、２１ｂの一端を装着するベルト孔２５を設けた接続部２４と、前記第２ベルト連結部９１のガイド軸部１１１に着脱可能に装着する円筒状に形成した軸受部２６とを一体に設けてなり、該軸受部の軸心方向に設けた挿通孔２７の一側面に前記ガイド軸部１１１のガイド部１１３を挿通する挿通溝部２８を設けてなることを特徴とする。 The invention of claim 6 is provided on one side of a mounting portion 101 which is vertically long and wide and has the same shape as the skin portion 4 of the shoulder portions 3 and 3 constituting the pair of left and right shoulder belts 2 and 2 attached to the school bag 1. A second belt connecting portion 91 formed integrally with a guide shaft portion 111 having a cylindrical shape exposed from the inner edge of the shoulder abutment portion 3 and provided with a core shaft 112 at the center, and a pair of belt portions 21a and 21b at each end. A movable piece 23 detachably connected to the guide shaft portion 111 of the second belt connecting portion 91 is connected, and a connecting tool 30 comprising a male piece 31 and a female piece 35 is connected to the other ends of the belt portions 21a and 21b. And an adjustment belt body 20 detachably attached thereto. Further, the guide shaft portion 111 is provided with a cushioning portion 117 having cushioning properties on the outer periphery of the core shaft 112 provided at the center, and the guide shaft portion 111 is formed in a tapered shape without the core shaft 112 provided at the center above the guide shaft portion. The insertion portion 15 is formed, and a stop portion 16 provided below the guide shaft portion 11 is sewn and fixed below the shoulder portions 3 and 3. Further, the guide shaft portion 111 is characterized in that a buffer portion 117 provided around the core shaft 112 and a buffer plate portion 118 having cushioning properties provided in the center of the mounting portion 10 are integrally provided. To do. Furthermore, the movable piece 23 is detachably attached to the connecting portion 24 provided with the belt hole 25 for attaching one end of the belt portions 21a and 21b and the guide shaft portion 111 of the second belt connecting portion 91. A cylindrically formed bearing portion 26 is integrally provided, and an insertion groove portion 28 through which the guide portion 113 of the guide shaft portion 111 is inserted is provided on one side surface of the insertion hole 27 provided in the axial direction of the bearing portion. It is characterized by.

したがって、肩ずれ防止具８を構成する第２ベルト連結部９１の取付部１０１を背負いベルト２の肩当部の表皮部とほぼ同じ幅と長さに形成したことにより、肩当部３を縫製する際の表皮部を不要にし、縫製工程を簡略化することにより背負ベルト２の軽量化とコストの軽減を図ることができる。背負いベルト２に肩ずれ防止具８を取付けることにより、左右の背負ベルト２の横幅が広がるのを防止することができるので、重いランドセル１を背負って走っても背負いベルト２が肩からずれ落ちる心配がない。第２ベルト連結部９１のガイド軸部１１、１１１の挿入部１５から調節ベルト体２０の可動片２３をそれぞれ挿通してベルト軸部１１に可動片２３を上下動可能に狭着するだけの簡単な操作で調節ベルト体２０を装着することができる。また、調節ベルト体２０の各ベルト部２１ａ、２１ｂの一端に設けた雌雄型の接続具３０の一方の雄型片３１と他方の雌型片３５を学童の胸の前側で簡単に装着することができる。さらにはまた、この背負いベルトの肩ずれ防止具８は、不使用時には調節ベルト体２０の可動片２３をベルト軸部１１の上方に引き上げて挿入部１５から引き抜くことにより、簡単に取り外ずして収納することができるので、調節ベルト体２０の紛失を防止することができ、且つ、ベルト部２１のぶら下がりによる不慮の事故を防止することができる。 Accordingly, when the shoulder portion 3 is sewn, the attachment portion 101 of the second belt connecting portion 91 constituting the shoulder slip prevention tool 8 is formed with the same width and length as the shoulder portion of the shoulder portion of the belt 2. Thus, it is possible to reduce the weight of the back belt 2 and reduce the cost by simplifying the sewing process. By attaching the shoulder slip prevention device 8 to the shoulder belt 2, it is possible to prevent the lateral width of the left and right shoulder belts 2 from expanding, so that even if the heavy school bag 1 is carried on the back, the shoulder belt 2 may slip off the shoulder. There is no. Simply inserting the movable piece 23 of the adjustment belt body 20 from the insertion portion 15 of the guide shaft portions 11 and 111 of the second belt connecting portion 91 and narrowing the movable piece 23 to the belt shaft portion 11 so as to be movable up and down. The adjustment belt body 20 can be mounted with a simple operation. Also, one male piece 31 and the other female piece 35 of the male and female connector 30 provided at one end of each belt portion 21a, 21b of the adjustment belt body 20 can be easily mounted on the front side of the schoolchild's chest. Can do. Furthermore, the shoulder belt shoulder slip prevention device 8 can be easily removed by pulling up the movable piece 23 of the adjustment belt body 20 above the belt shaft portion 11 and pulling it out from the insertion portion 15 when not in use. Therefore, it is possible to prevent the adjustment belt body 20 from being lost, and to prevent an unexpected accident caused by the hanging of the belt portion 21.

本考案に係る背負いベルトの肩ずれ防止具をランドセルの背負いベルトに取付けた使用状態を示す正面図である。It is a front view which shows the use condition which attached the shoulder slip prevention tool of the backpack which concerns on this invention to the backpack of a school bag. 背負いベルトの肩ずれ防止具の要部拡大正面図である。It is a principal part enlarged front view of the shoulder slip prevention tool of a backpack belt. 背負いベルトに取付けたベルト連結部のガイド軸部に調節ベルト体を取付けた使用状態を示す正面図である。It is a front view which shows the use condition which attached the adjustment belt body to the guide shaft part of the belt connection part attached to the backpack belt. 第１ベルト連結部の一部破断した要部拡大断面図である。It is the principal part expanded sectional view which a part of 1st belt connection part fractured | ruptured. 第１ベルト連結部を肩当部に装着した使用状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the use condition which mounted | wore the shoulder contact part with the 1st belt connection part. ガイド軸部の芯軸に緩衝部を設けた第１ベルト連結部の要部拡大断面図である。It is a principal part expanded sectional view of the 1st belt connection part which provided the buffer part in the core shaft of the guide shaft part. ガイド軸部の芯軸に緩衝部、取付部の中心に緩衝板部を設けた第１ベルト連結部の要部拡大断面図である。It is a principal part expanded sectional view of the 1st belt connection part which provided the buffer part in the center axis | shaft of the buffer part and the attachment part in the core axis | shaft of a guide shaft part. 第２ベルト連結部の一部破断した要部拡大断面図である。It is a principal part expanded sectional view which a part of 2nd belt connection part fractured. 第２ベルト連結部を肩当部に装着した使用状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the use condition which mounted | wore the shoulder contact part with the 2nd belt connection part. ガイド軸部の芯軸に緩衝部を設けた第２ベルト連結部の要部拡大断面図である。It is a principal part expanded sectional view of the 2nd belt connection part which provided the buffer part in the core axis | shaft of a guide shaft part. ガイド軸部に調節ベルト体の可動片を装着した状態を示す側面図である。It is a side view which shows the state which mounted | wore the movable piece of the adjustment belt body to the guide shaft part. 可動片の中央横断面図である。It is a center cross-sectional view of a movable piece. 調節ベルト体の可動片をベルト連結部のガイド軸部に装着し使用状態を示す要部拡大断面図である。It is a principal part expanded sectional view which attaches the movable piece of an adjustment belt body to the guide shaft part of a belt connection part, and shows a use condition. 調節ベルト体の可動片をガイド軸部の挿入部に挿入する前状態を示す模式図である。It is a schematic diagram which shows the state before inserting the movable piece of an adjustment belt body in the insertion part of a guide shaft part. 調節ベルト体の可動片をガイド軸部の挿入部に挿入した状態を示す模式図である。It is a schematic diagram which shows the state which inserted the movable piece of the adjustment belt body in the insertion part of a guide shaft part. 調節ベルト体の可動片をガイド軸部に挿通した状態を示す模式図である。It is a schematic diagram which shows the state which penetrated the movable piece of the adjustment belt body to the guide shaft part. ベルト連結部のガイド軸部の挿入部にストッパーを取り付けた状態を示す模式図である。It is a schematic diagram which shows the state which attached the stopper to the insertion part of the guide shaft part of a belt connection part.

本考案の第１の実施の形態を図面に基づいて説明すると、図１は本考案に係る背負いベルトの肩ずれ防止具をランドセルの背負いベルトに取付けた使用状態を示す正面図、図２は背負いベルトの肩ずれ防止具の要部拡大正面図、図３は背負いベルトに取付けたベルト連結部のガイド軸部に調節ベルト体を取付けた使用状態を示す正面図、図４は第１ベルト連結部の一部破断した要部拡大断面図、図５は第１ベルト連結部を肩当部に装着した使用状態を示す要部拡大断面図、図６はガイド軸部の芯軸に緩衝部を設けた第１ベルト連結部の要部拡大断面図、図７はガイド軸部の芯軸に緩衝部、取付部の中心に緩衝板部を設けた第１ベルト連結部の要部拡大断面図、図１１はガイド軸部に調節ベルト体の可動片を装着した状態を示す側面図、図１２は可動片の中央横断面図である。このランドセル１に取付ける一対の背負いベルト２、２は、図３に示す如く、背板（図示せず）の上方中央に設けた背環（図示せず）に連結する幅広の肩当部３とランドセルの底部に連結した下ベルトとを長さ調節可能に連結する連結部６を一体に形成してなり、背負いベルトの肩ずれ防止具８は、図２に示す如く、ランドセル１の背負いベルト２の肩当部３に取付ける第１ベルト連結部９と、該第１ベルト連結部に一端を連結して背負いベルト２の幅方向の広がりを防止する着脱可能な調節ベルト体２０とにより構成してある。 A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a use state in which a shoulder slip prevention device for a backpack according to the present invention is attached to a backpack of a school bag, and FIG. FIG. 3 is a front view showing a use state in which an adjustment belt body is attached to a guide shaft portion of a belt connecting portion attached to a shoulder belt, and FIG. 4 is a first belt connecting portion. FIG. 5 is an enlarged cross-sectional view of a main portion showing a use state in which the first belt connecting portion is attached to the shoulder abutment portion, and FIG. 6 is provided with a buffer portion on the core shaft of the guide shaft portion. The principal part expanded sectional view of a 1st belt connection part, FIG. 7: is the principal part expanded sectional view of the 1st belt connection part which provided the buffer part in the center of the attachment part, and the buffer part in FIG. FIG. 12 is a side view showing a state in which the movable piece of the adjustment belt body is mounted on the guide shaft portion. It is a central cross-sectional view of the movable piece. As shown in FIG. 3, a pair of shoulder belts 2 and 2 attached to the school bag 1 are connected to a shoulder ring 3 and a school bag which are connected to a back ring (not shown) provided at the upper center of a back plate (not shown). The lower belt connected to the bottom of the belt is integrally formed with a connecting portion 6 that can be adjusted in length, and the shoulder belt anti-shoulder 8 is provided on the back belt 2 of the school bag 1 as shown in FIG. A first belt connecting portion 9 attached to the shoulder abutment portion 3 and a detachable adjusting belt body 20 that connects one end to the first belt connecting portion to prevent the shoulder belt 2 from spreading in the width direction are configured.

前記第１ベルト連結部９は、図４、５に示すごとく、人口皮革材または合成皮革材を二つ折りにして前記肩当部３の表皮部４とほぼ同じ縦長がで幅方向を短尺に形成した取付部１０の一側に、前記人口皮革材または合成皮革材を二つ折りに形成した取り付け部１０の折り目部に硬質合成樹脂材により形成した芯軸１２を包みこんで円柱状に形成したガイド軸部１１を前記取付部１０と一体に形成し、該ガイド軸部１１と取付部１０との基部に後記する調節ベルト体２０の可動片２３を挿通するガイド部１３を設けてある。 As shown in FIGS. 4 and 5, the first belt connecting portion 9 is formed by folding the artificial leather material or the synthetic leather material in half and has the substantially same vertical length as the skin portion 4 of the shoulder abutment portion 3, and the width direction is made short. A guide shaft formed in a cylindrical shape by wrapping a core shaft 12 formed of a hard synthetic resin material in a fold portion of the mounting portion 10 in which the artificial leather material or the synthetic leather material is formed in two on one side of the mounting portion 10. A portion 11 is formed integrally with the mounting portion 10, and a guide portion 13 is provided at the base portion of the guide shaft portion 11 and the mounting portion 10 to insert a movable piece 23 of the adjustment belt body 20 described later.

前記第１ベルト連結部９は、取付部１０を肩当部３の表皮板４とクッション部５との間に狭着して縫着固定し、ガイド軸部１１は、図５に示す如く、ガイド軸部１１を肩当部３の内側縁から露出させると共に、ガイド軸部１１全体を肩当部３の内側縁に沿って緩やかに湾曲させて取付けてある。 The first belt connecting portion 9 has the mounting portion 10 tightly fitted between the skin plate 4 and the cushion portion 5 of the shoulder abutment portion 3 and fixed by sewing, and the guide shaft portion 11 has a guide as shown in FIG. The shaft portion 11 is exposed from the inner edge of the shoulder abutment portion 3, and the entire guide shaft portion 11 is attached by being gently curved along the inner edge of the shoulder abutment portion 3.

また、ガイド軸部１１は、図３に示すごとく、上方に前記調節ベルト体２０の可動片２３を挿入する挿入部１５を先細に形成し、このガイド軸部１１の下方に設けた停止部１６を肩当部２の下方に埋設して縫着固定し、ガイド軸部１１に挿通した可動片２３が脱落するのを防止してある。 Further, as shown in FIG. 3, the guide shaft portion 11 is formed with a tapered insertion portion 15 into which the movable piece 23 of the adjustment belt body 20 is inserted, and a stop portion 16 provided below the guide shaft portion 11. Is embedded under the shoulder abutment 2 and fixed by sewing so that the movable piece 23 inserted through the guide shaft portion 11 is prevented from falling off.

前記第１ベルト連結部９は、図６に示すごとく、ガイド軸部１１の中心に設けた芯軸１２の周囲にクッション性を有する緩衝部１７を介在させて形成してある。この芯軸１２に緩衝部１７を設けてガイド軸部１１全体に弾力性をもたせ、該ガイド軸部と挿通する可動片２３との摩擦抵抗を大きくすることができる。したがって、ガイド軸部１１に装着した調節ベルト体２０が歩行中の振動や衝撃などでずり下がるのを防止することができる。また、前記クッション部分は、図７に示すごとく、ガイド軸部１１の芯軸１２に装着した緩衝部１７の他、ガイド軸部１１一側に設けた取付部１０の中心にクッション性を有する緩衝板部１８を介在させて形成してもよい。 As shown in FIG. 6, the first belt connecting portion 9 is formed by interposing a cushioning portion 17 having cushioning properties around a core shaft 12 provided at the center of the guide shaft portion 11. The buffer shaft 17 is provided on the core shaft 12 so that the entire guide shaft portion 11 has elasticity, and the frictional resistance between the guide shaft portion and the movable piece 23 inserted through the guide shaft portion 11 can be increased. Therefore, it is possible to prevent the adjustment belt body 20 attached to the guide shaft portion 11 from sliding down due to vibration or impact during walking. Further, as shown in FIG. 7, the cushion portion has a cushioning property at the center of the mounting portion 10 provided on one side of the guide shaft portion 11 in addition to the buffer portion 17 attached to the core shaft 12 of the guide shaft portion 11. The plate portion 18 may be interposed.

前記調節ベルト体２０は、図２に示す如く、一対のベルト体２１ａ、２１ｂと、該ベルト体の一端に取付ける硬質合成樹脂材により形成した可動片２３と、前記ベルト体２１の他端に取付ける硬質合成樹脂材により形成した雌雄一対で着脱可能に形成した雄型片３１と雌型片３５とからなる接続具３０とにより構成してある。 2, the adjustment belt body 20 is attached to a pair of belt bodies 21a and 21b, a movable piece 23 formed of a hard synthetic resin material attached to one end of the belt body, and the other end of the belt body 21. It is comprised by the connector 30 which consists of the male-type piece 31 and the female-type piece 35 which were formed so that attachment or detachment was possible by the male and female pair formed with the hard synthetic resin material.

前記一対のベルト体２１は、それぞれ合成繊維素材を所定幅（１５ｍｍから３０ｍｍ、好ましくは、２０ｍｍ）に形成し、ベルト体２１ａは、長尺で１３０ｍｍから１８０ｍｍ、好ましくは、１５０ｍｍに形成し、ベルト体２１ｂは、短尺な７０ミリから１２０ｍｍ、好ましくは、９０ｍｍの長さに形成してある。 Each of the pair of belt bodies 21 is made of a synthetic fiber material having a predetermined width (15 mm to 30 mm, preferably 20 mm), and the belt body 21a is long and has a length of 130 mm to 180 mm, preferably 150 mm. The body 21b is formed in a short length of 70 mm to 120 mm, preferably 90 mm.

前記可動片２３は、図１１、１２に示すごとく、全体を硬質合成樹脂材により形成し、一端に設けた接続部２４とベルト孔２５の上下方向全体を湾曲させ、他端に前記第１ベルト連結部９または第２ベルト連結部９１のガイド軸部１１、１１１に着脱可能に挿通する円筒状の軸受部２６を一体に形成してある。この軸受部２６は、中央軸心方向に前記ガイド軸部１１、１１１が挿通する挿通孔２７を設け、該挿通孔の一側に前記ガイド軸部１１、１１１のガイド部１３、１１３が挿通する挿通溝部２８を設けてある。 As shown in FIGS. 11 and 12, the movable piece 23 is entirely made of a hard synthetic resin material, and the connecting portion 24 provided at one end and the entire belt hole 25 are curved in the up-and-down direction, and the first belt is provided at the other end. A cylindrical bearing portion 26 that is detachably inserted into the guide shaft portions 11 and 111 of the connecting portion 9 or the second belt connecting portion 91 is integrally formed. The bearing portion 26 is provided with an insertion hole 27 through which the guide shaft portions 11 and 111 are inserted in the center axis direction, and the guide portions 13 and 113 of the guide shaft portions 11 and 111 are inserted into one side of the insertion holes. An insertion groove 28 is provided.

この可動片２３の接続部２４全体を緩やかに湾曲させたことにより、ベルト体２１に接続具３０を接続して左右方向にベルト体２１が引っ張られたとき、ベルト体２１に平均した緊張力が作用するため、ベルト体２１が上側または下側に偏るのを防止することができる。 By gently curving the entire connecting portion 24 of the movable piece 23, when the connecting member 30 is connected to the belt body 21 and the belt body 21 is pulled in the left-right direction, the tension force averaged on the belt body 21 is increased. Therefore, the belt body 21 can be prevented from being biased upward or downward.

前記接続具３０は、可動片２３の一端に取付けたベルト部２１ａの他端に、ベルトの長さを調節する調節部（図示せず）を介して雄型片３１を連結し、同じく可動片２３の一端に取付けたベルト部２１ｂの他端に雌型片３５を連結してある。この調節ベルト体２０に取付けた接続具３０を着脱することにより背負いベルト２が幅方向に広がるのを防止することができる。また、接続具３０は、雌型片３１と雄型片３５とを簡単に着脱することが可能であることから低学年の学童でも簡単に操作することができる。 The connector 30 has a male piece 31 connected to the other end of a belt portion 21a attached to one end of the movable piece 23 via an adjusting portion (not shown) for adjusting the length of the belt. A female piece 35 is connected to the other end of the belt portion 21b attached to one end of the belt 23b. It is possible to prevent the shoulder belt 2 from spreading in the width direction by attaching and detaching the connection tool 30 attached to the adjustment belt body 20. In addition, since the connector 30 can easily attach and detach the female piece 31 and the male piece 35, it can be easily operated even by a schoolchild of a lower grade.

さらに、肩ずれ防止具８を背負いベルト２に装着後、調節ベルト体２０が幅方向に引っ張られた場合、可動片２３を硬質合成樹脂材により形成してあること、およびガイド軸部１１の芯軸１２も硬質合成樹脂材で形成してあることから変形しにくいため可動片２３がガイド軸部１１から離脱する恐れはない。 Further, when the adjustment belt body 20 is pulled in the width direction after the shoulder slip prevention device 8 is attached to the shoulder belt 2, the movable piece 23 is formed of a hard synthetic resin material, and the core of the guide shaft portion 11. Since the shaft 12 is also formed of a hard synthetic resin material, it is difficult to be deformed, so there is no possibility that the movable piece 23 is detached from the guide shaft portion 11.

また、万一、幅方向への強い引張力が生じてガイド軸部１１が変形しても硬質合成樹脂材により形成した芯軸１２の直径が同じく硬質合成樹脂材により形成した挿通溝部２８の幅より大径に形成してあるため、軸受部２６の挿通溝部２８からガイド軸部１１が離脱する恐れはなく安全に使用することができる。 Further, even if a strong tensile force in the width direction is generated and the guide shaft portion 11 is deformed, the diameter of the core shaft 12 formed of the hard synthetic resin material is the same as the width of the insertion groove portion 28 formed of the hard synthetic resin material. Since it has a larger diameter, the guide shaft portion 11 is not likely to be detached from the insertion groove portion 28 of the bearing portion 26 and can be used safely.

本考案の第２の実施の形態を図面に基づいて説明すると、図８は第２ベルト連結部の一部破断した要部拡大断面図、図９は第２ベルト連結部を肩当部に装着した使用状態を示す要部拡大断面図、図１０はガイド軸部の芯軸に緩衝部を設けた第２ベルト連結部の要部拡大断面図である。この第２ベルト連結部９１は、図８に示す如く、人口皮革材または合成皮革材を二つ折りにして全体を前記肩当部３の表皮部４とほぼ同じ幅と長さに形成した取付部１０１を設け、前記二つ折りにした取付部１０１の折り目部に硬質合成樹脂材により形成した芯軸１１２を包みこんで円柱状のガイド軸部１１３を設けて一体に形成してある。 A second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is an enlarged cross-sectional view of a main part of the second belt connecting portion, and FIG. 9 is a diagram showing the second belt connecting portion attached to the shoulder portion. The principal part expanded sectional view which shows a use condition, FIG. 10: is a principal part expanded sectional view of the 2nd belt connection part which provided the buffer part in the core shaft of the guide shaft part. As shown in FIG. 8, the second belt connecting portion 91 is a mounting portion 101 formed by folding an artificial leather material or a synthetic leather material in half and having the same width and length as the skin portion 4 of the shoulder abutment portion 3. And a cylindrical guide shaft portion 113 is integrally formed by enclosing the core shaft 112 formed of a hard synthetic resin material in the fold portion of the mounting portion 101 that is folded in half.

前記第２ベルト連結部９１の取付部１０１を背負いベルト２の肩当部３に設けた表皮部４とほぼ同じ幅と長さに形成したことにより、図９に示す如く、クッション部５の表面側に直接取付部１０１を縫着することができるので縫製工程において、表皮部を不要とすることができるので背負いベルト２の軽量化を図り、また、縫製工程を簡略化することによりコストの軽減化を図ることができ経済的である。 Since the mounting portion 101 of the second belt connecting portion 91 is formed to have substantially the same width and length as the skin portion 4 provided on the shoulder portion 3 of the shoulder belt 2, as shown in FIG. Since the attachment portion 101 can be sewn directly to the sewing machine, the skin portion can be eliminated in the sewing process, so that the weight of the shoulder belt 2 can be reduced, and the cost can be reduced by simplifying the sewing process. Is economical.

前記第２ベルト連結部９１は、図１０に示すごとく、ガイド軸部１１１の中心に設けた芯軸１１２の周囲にクッション性を有する緩衝部１１７を介在させて形成してある。また、前記クッション部分は、図７に示す第１ベルト連結部９の実施例と同様に、取付部１０１の中心にクッション性を有する緩衝板部を介在させて形成してもよいことは勿論である。 As shown in FIG. 10, the second belt connecting portion 91 is formed by interposing a cushioning portion 117 having cushioning properties around a core shaft 112 provided at the center of the guide shaft portion 111. Further, as in the embodiment of the first belt connecting portion 9 shown in FIG. 7, the cushion portion may be formed by interposing a cushioning plate portion having cushioning properties at the center of the attachment portion 101. is there.

このガイド軸部１１１の中心に設けた芯軸１１２の周囲に緩衝部１１７を介在させて形成したことにより、ガイド軸部１１１に弾力性をもたせ、該ガイド軸部に挿通した可動片２３との摩擦抵抗を大きくすることにより、ガイド軸部１１に装着した調節ベルト体２０が歩行中の振動や衝撃などでずり下がるのを防止することができる。 By forming the buffer portion 117 around the core shaft 112 provided at the center of the guide shaft portion 111, the guide shaft portion 111 has elasticity, and the movable piece 23 inserted through the guide shaft portion is connected to the guide shaft portion 111. By increasing the frictional resistance, it is possible to prevent the adjustment belt body 20 attached to the guide shaft portion 11 from sliding down due to vibration or impact during walking.

本考案にかかる肩ずれ防止具８の第２ベルト連結部９１を構成するガイド軸部１１１は、挿入部１５及び停止部１６は、前記第１ベルト連結部９のガイド軸部１１と同一であることから同一符号を使用した。また、調節ベルト体２０は、前記第１ベルト連結部９に取付ける調節ベルト体２０と同一であることから、説明が重複するため説明を省略する。 The guide shaft portion 111 constituting the second belt connecting portion 91 of the shoulder slip prevention tool 8 according to the present invention is the same as the guide shaft portion 11 of the first belt connecting portion 9 in the insertion portion 15 and the stop portion 16. Therefore, the same symbols were used. Moreover, since the adjustment belt body 20 is the same as the adjustment belt body 20 attached to the said 1st belt connection part 9, since description overlaps, description is abbreviate | omitted.

肩ずれ防止具８を背負いベルト２に取付ける説明は、第１ベルト連結部９と可動片２３を使用して説明する。図１４に示す如く、あらかじめ背負いベルト２の肩当部３に取付けてある第１ベルト連結部９の挿入部１５の先端に調節ベルト体２０の可動片２３の軸受部２６の下端をあて、挿通溝部２８を挿入部１５に侵入させながらガイド軸部１１を挿入孔２７に挿入し、ガイド部１３を挿通溝部２８に挿通する（図１５）。 The description of attaching the shoulder slip prevention tool 8 to the shoulder belt 2 will be made using the first belt connecting portion 9 and the movable piece 23. As shown in FIG. 14, the lower end of the bearing portion 26 of the movable piece 23 of the adjustment belt body 20 is applied to the distal end of the insertion portion 15 of the first belt connecting portion 9 that is attached to the shoulder abutment portion 3 of the shoulder belt 2 in advance, thereby inserting the groove portion. The guide shaft portion 11 is inserted into the insertion hole 27 while the guide portion 13 is inserted into the insertion portion 15, and the guide portion 13 is inserted into the insertion groove portion 28 (FIG. 15).

次いで、可動片２３をガイド軸部１１に沿って下方にスライドさせると、第１ベルト連結部９のガイド部１３に挿通溝部２８がガイドされ、第１ベルト連結部９のガイド軸１１が軸受部２６の挿通孔２７に挿入して簡単に取付けることができる。 Next, when the movable piece 23 is slid downward along the guide shaft portion 11, the insertion groove portion 28 is guided by the guide portion 13 of the first belt connecting portion 9, and the guide shaft 11 of the first belt connecting portion 9 is the bearing portion. It can be easily attached by being inserted into the 26 insertion holes 27.

前記第１ベルト連結部９のガイド軸部１１に挿通した調節ベルト体２０の可動片２３は、ガイド軸部１１の下端に設けた停止部１６を肩当部３の下部に縫着固定してあるため可動片２３が下方から脱落するおそれはない。 The movable piece 23 of the adjustment belt body 20 inserted through the guide shaft portion 11 of the first belt connecting portion 9 has a stop portion 16 provided at the lower end of the guide shaft portion 11 sewn and fixed to the lower portion of the shoulder portion 3. Therefore, there is no possibility that the movable piece 23 falls off from below.

また、ガイド軸部１１は、図１７に示す如く、調節ベルト体２０の可動片２３をガイド軸部１１に挿通した後、肩当部３の挿入部１５付近にストッパー４０を着脱可能に取付けることにより、可動片２３がガイド軸部１１の上方から引き抜かれるのを防止することができる。このストッパー４０の表面に任意の装飾部や反射部を設けてもよいことは勿論である。 Further, as shown in FIG. 17, the guide shaft portion 11 is configured such that after the movable piece 23 of the adjustment belt body 20 is inserted into the guide shaft portion 11, a stopper 40 is detachably attached in the vicinity of the insertion portion 15 of the shoulder portion 3. The movable piece 23 can be prevented from being pulled out from above the guide shaft portion 11. Of course, an arbitrary decorative portion or reflecting portion may be provided on the surface of the stopper 40.

前記した如く、ランドセル１を背負う学童の肩幅に左右の背負いベルト２の幅に合わせて調節ベルト体２０のベルト部２１の長さを調整した後、接続具３０の雄型片３と雌型片３５を互いに嵌合して連結することにより、背負いベルト２が所定幅に位置し、幅方向に広がるのを防止することができる。 As described above, after adjusting the length of the belt portion 21 of the adjusting belt body 20 to the width of the shoulder belt 2 on the left and right of the schoolchild carrying the school bag 1, the male piece 3 and the female piece of the connector 30 are adjusted. By fitting and connecting 35 to each other, it is possible to prevent the shoulder belt 2 from being positioned in a predetermined width and spreading in the width direction.

背負いベルト２が幅方向に広がらないので、背負いベルト２の肩ずれを防止でき歩行中のランドセル１の揺動を防止することができ、また、低学年の学童でも疲れることなくランドセル１を背負うことができる。 Since the shoulder belt 2 does not spread in the width direction, the shoulder belt 2 can be prevented from slipping, and the school bag 1 can be prevented from swinging while walking. Can do.

この背負いベルトの肩ずれ防止具８の不使用時には、調節ベルト体２０の可動片２３をベルト軸部１１の上方に引き上げて挿入部１５から抜くことにより、簡単に取り外して収納することができるので調節ベルト体２０の紛失や、ベルト部の垂れ下がりによる不慮の事故を防止することができる。 When the shoulder belt anti-shoulder 8 is not used, the movable piece 23 of the adjustment belt body 20 can be easily removed and stored by pulling it up above the belt shaft 11 and pulling it out of the insertion portion 15. It is possible to prevent accidental accidents due to loss of the adjustment belt body 20 or drooping of the belt portion.

以下、本考案の実施の形態の作用について説明すると、ランドセル１の背負いベルト２に取付ける肩ずれ防止具８は、背負いベルト２の肩当部３に取付ける第１ベルト連結部９と、背負いベルト２、２を所定幅で連結する調節ベルト体２０とからなり、前記第１ベルト連結部９は、あらかじめ肩当部３の表皮板４とクッション部５との間に取付部１０を介在させて縫着固定してある。 Hereinafter, the operation of the embodiment of the present invention will be described. The shoulder slip prevention device 8 attached to the backpack belt 2 of the school bag 1 includes the first belt connecting portion 9 attached to the shoulder abutment portion 3 of the backpack belt 2, the backpack belt 2, 2 and an adjustment belt body 20 that connects the belts 2 with a predetermined width. The first belt connection portion 9 is fixed by sewing with an attachment portion 10 interposed between the skin plate 4 and the cushion portion 5 of the shoulder abutment portion 3 in advance. It is.

次いで、図１４に示す如く、肩当部３の内側縁に位置したガイド軸部１１の上方に位置した挿入部１５から調節ベルト体２０の可動片２３の軸受部２６の下端をあて、次いで、挿通孔２７と挿通溝部２８に挿入部１５を挿入しながらガイド軸部１１のガイド部１３を挿通溝部２８に挿通する（図１５）。 Next, as shown in FIG. 14, the lower end of the bearing portion 26 of the movable piece 23 of the adjustment belt body 20 is applied from the insertion portion 15 located above the guide shaft portion 11 located at the inner edge of the shoulder abutment portion 3, and then inserted. The guide portion 13 of the guide shaft portion 11 is inserted into the insertion groove portion 28 while the insertion portion 15 is inserted into the hole 27 and the insertion groove portion 28 (FIG. 15).

さらに、可動片２３をガイド軸部１１に沿って下方にスライドさせると、第１ベルト連結部９のガイド部１３に挿通溝部２８がガイドされ、第１ベルト連結部９のガイド軸１１が軸受部２６の挿通孔２７に篏合して簡単に取付けることができる（図１６）。 Further, when the movable piece 23 is slid downward along the guide shaft portion 11, the insertion groove portion 28 is guided by the guide portion 13 of the first belt connecting portion 9, and the guide shaft 11 of the first belt connecting portion 9 is the bearing portion. It can be easily attached by fitting into the 26 insertion holes 27 (FIG. 16).

前記第１ベルト連結部９のガイド軸部１１に挿通した調節ベルト体２０の可動片２３は、ガイド軸部１１の下端に設けた停止部１６を肩当部３の下部に縫着固定してあるため可動片２３が下がっても下方から脱落するおそれはない。 The movable piece 23 of the adjustment belt body 20 inserted through the guide shaft portion 11 of the first belt connecting portion 9 has a stop portion 16 provided at the lower end of the guide shaft portion 11 sewn and fixed to the lower portion of the shoulder portion 3. Therefore, even if the movable piece 23 is lowered, there is no possibility of dropping from below.

前記第１ベルト連結部９のガイド軸部１１に調節ベルト体２０の可動片２３を挿通すると、軸受部２６の挿通溝部２８がガイド軸部１１のガイド部１３に沿って上下動して適正な位置に停止させることができる。また、装着後、調節ベルト体２０が幅方向に強く引っ張られた場合、可動片２３が硬質合成樹脂材により形成してあること、およびガイド軸部１１の芯軸１２が硬質合成樹脂材で形成してあることから変形しにくいため可動片２３がガイド軸部１１から離脱する恐れはない。さらには、芯軸１２にクッション性を有する緩衝部１７を設けたことによりガイド軸部１１の径を大径に形成したことにより可動片２３がガイド軸部１１から離脱する恐れはない。 When the movable piece 23 of the adjustment belt body 20 is inserted into the guide shaft portion 11 of the first belt connecting portion 9, the insertion groove portion 28 of the bearing portion 26 moves up and down along the guide portion 13 of the guide shaft portion 11 and is appropriately adjusted. Can be stopped in position. When the adjustment belt body 20 is pulled strongly in the width direction after the mounting, the movable piece 23 is formed of a hard synthetic resin material, and the core shaft 12 of the guide shaft portion 11 is formed of a hard synthetic resin material. Therefore, the movable piece 23 is unlikely to be detached from the guide shaft portion 11 because it is difficult to be deformed. Furthermore, since the buffer shaft 17 having cushioning properties is provided on the core shaft 12 and the diameter of the guide shaft portion 11 is increased, there is no possibility that the movable piece 23 is detached from the guide shaft portion 11.

また、万一、幅方向の強い引張力によりガイド軸部１１が変形した場合、硬質合成樹脂材により形成した芯軸１２の直径が同じく硬質合成樹脂材により形成した挿通溝部２８の幅より大径に形成してあるため、軸受部２６の挿通溝部２８からガイド軸部１１が離脱する恐れはなく安全に使用することができる。 If the guide shaft 11 is deformed by a strong tensile force in the width direction, the diameter of the core shaft 12 formed of the hard synthetic resin material is larger than the width of the insertion groove 28 formed of the same hard synthetic resin material. Therefore, the guide shaft portion 11 is not likely to be detached from the insertion groove portion 28 of the bearing portion 26 and can be used safely.

前記肩ずれ防止具８は、ランドセル１を背負う学童の肩幅に背負いベルト２に可動片２３を取付けた調節ベルト体２０のベルト部２１ａ、２１ｂの幅を調整した後、左右の接続具３０の雄型片３１と雌型片３５を互いに連結する。したがって、背負いベルト２が幅方向に広がらないので肩ずれを防止することができ、登下校時において学童が安定してランドセルを背負うことができる。また、背負いベルト２が安定することにより低学年の学童でも疲れることなくランドセル１を背負うことができる。さらには、前記した調節ベルト体２０のベルト部２１の幅調整は、背負いベルトに取付ける前にあらかじめ調整することができるのは勿論である。 The shoulder slip prevention device 8 adjusts the widths of the belt portions 21a and 21b of the adjustment belt body 20 having the movable piece 23 attached to the belt 2 which is carried on the shoulder width of the school child carrying the school bag 1, and then the males of the right and left connection tools 30 are connected. The mold piece 31 and the female mold piece 35 are connected to each other. Therefore, since the shoulder belt 2 does not spread in the width direction, shoulder misalignment can be prevented, and the schoolchild can stably carry the school bag when going to and from school. Further, since the shoulder belt 2 is stabilized, the school bag 1 can be carried on the back without getting tired even by lower grade school children. Furthermore, it goes without saying that the width adjustment of the belt portion 21 of the adjusting belt body 20 can be adjusted in advance before being attached to the shoulder belt.

この肩ずれ防止具８を構成する調節ベルト体２０は、不使用時に可動片２３をベルト軸部１１の上方の挿入部１５から引き抜くことにより、簡単に取り外して収納することができるので紛失を防止でき便利であると共に、不使用時におけるベルト部２１のぶら下がりによる不慮の事故を防止することができる。 The adjustment belt body 20 constituting the shoulder slip prevention device 8 can be easily removed and stored by pulling the movable piece 23 from the insertion portion 15 above the belt shaft 11 when not in use, thus preventing loss. In addition to being convenient, it is possible to prevent an unexpected accident caused by the hanging of the belt portion 21 when not in use.

第２ベルト連結部９１を肩当部３に取付ける場合、取付部１０１は肩当部３の表皮部４とほぼ同じ幅と長さに形成してあることから表皮部の代わりに取付部１０１を取付けることにより表皮部を不要とすることができる。したがって、背負いベルト２の軽量化を図り、また、縫製工程を簡略化することによりコストの軽減化を図ることができ経済的である。第２ベルト連結部９１に連結する調節ベルト体２０は、前記第１ベルト連結部９に取付けた調節ベルト体２０と同一であることからここでの説明を省略する。 When the second belt connecting portion 91 is attached to the shoulder portion 3, the attachment portion 101 is formed to have substantially the same width and length as the skin portion 4 of the shoulder portion 3, so that the attachment portion 101 is attached instead of the skin portion. Thus, the skin portion can be made unnecessary. Therefore, the weight of the shoulder belt 2 can be reduced, and the cost can be reduced by simplifying the sewing process, which is economical. Since the adjustment belt body 20 connected to the second belt connection portion 91 is the same as the adjustment belt body 20 attached to the first belt connection portion 9, the description thereof is omitted here.

前記第１ベルト連結部９または第２ベルト連結部９１は、ガイド軸部１１、１１１の中心に設けた芯軸１２、１１２の周囲にクッション性を有する緩衝部１７、１１７を介在させて形成したことにより、ガイド軸部１１、１１１全体に弾力性をもたせ、該ガイド軸部に挿通した可動片２３との摩擦抵抗を大きくすることにより、ガイド軸部１１、１１１に装着した調節ベルト体２０が歩行中の振動や衝撃などでずり下がるのを防止することができる。また、前記クッション部分は、芯軸１２だけでなくガイド軸部１１に連通する取付部１０、１０１の中心に緩衝板部１８を設けて肩当部３の緩衝効果を図ることもできる。 The first belt connecting portion 9 or the second belt connecting portion 91 is formed by interposing cushioning portions 17 and 117 having cushioning properties around the core shafts 12 and 112 provided at the centers of the guide shaft portions 11 and 111. Thus, the adjustment belt body 20 attached to the guide shaft portions 11 and 111 can be provided by giving elasticity to the entire guide shaft portions 11 and 111 and increasing the frictional resistance with the movable piece 23 inserted through the guide shaft portions. It can be prevented from slipping down due to vibration or impact while walking. Further, the cushion portion can be provided with a buffer plate 18 at the center of the mounting portions 10 and 101 communicating with the guide shaft portion 11 as well as the core shaft 12, so that the cushioning effect of the shoulder portion 3 can be achieved.

以上、述べた如く、背負ベルトの肩ずれ防止具８は、第１ベルト連結部９、または、第２のベルト連結部９１に調節ベルト体２０を簡単に着脱可能に取付けることにより背負ベルト２の幅方向への広がりを防止することができ、また、低学年の学童の胸元でも適正な位置に取付けることができる。さらには、登下校中にランドセルが左右に揺れることなく安定して背負うことができるので、疲れにくく快適に背負うことができる。 As described above, the shoulder belt anti-skid device 8 of the back belt can be attached to the first belt connecting portion 9 or the second belt connecting portion 91 by detachably attaching the adjustment belt body 20 to the back belt 2. The spread in the width direction can be prevented, and it can be attached to an appropriate position on the chest of a lower grade schoolchild. Furthermore, since the school bag can be stably carried on the back without going to the left or right while going to and from school, it can be comfortably carried on the back with little fatigue.

１ ランドセル
２ 背負いベルト
３ 肩当部
６ 連結部
８ 肩ずれ防止具
９ 第１ベルト連結部
１０ 取付部
１１ ガイド軸部
１２ 芯軸
１３ ガイド部
１５ 挿入部
１６ 停止部
１７ 緩衝部
２０ 調節ベルト体
２１ ベルト部
２３ 可動片
２４ 接続部
２５ ベルト孔
２６ 軸受部
２７ 挿通孔
２８ 挿通溝部
３０ 接続具
３１ 雄型部
３５ 雌型部
９１ 第２ベルト連結部
１０１ 取付部
１１１ ガイド軸部
１１２ 芯軸
１１３ ガイド部 DESCRIPTION OF SYMBOLS 1 School bag 2 Shoulder belt 3 Shoulder contact part 6 Connection part 8 Shoulder slip prevention tool 9 1st belt connection part 10 Attachment part 11 Guide shaft part 12 Core shaft 13 Guide part 15 Insertion part 16 Stop part 17 Buffer part 20 Adjustment belt body 21 Belt Part 23 Movable piece 24 Connection part 25 Belt hole 26 Bearing part 27 Insertion hole 28 Insertion groove part 30 Connection tool 31 Male part 35 Female part 91 Second belt connecting part 101 Attachment part 111 Guide shaft part 112 Core shaft 113 Guide part

Claims (9)

ランドセル（１）に取付けた左右一対の背負いベルト（２、２）を構成する肩当部（３）の表皮部（４）とクッション部（５）との間に支持される取付部（１０）の一側に、前記肩当部（３）の内側縁から露出する中心に芯軸（１２）を有した円柱状のガイド軸部（１１）を一体に設けてなる第１ベルト連結部（９）と、
一対のベルト部（２１ａ、２１ｂ）のそれぞれ一端に前記第１ベルト連結部（９）のガイド軸部（１１）と着脱可能に連結する可動片（２３）を接続し、前記ベルト部（２１ａ、２１ｂ）の他端に雄型片（３１）と雌型片（３５）とからなる接続具（３０）を着脱可能に取付けた調節ベルト体（２０）とからなることを特徴とする肩ずれ防止具。 Of the attachment part (10) supported between the skin part (4) and the cushion part (5) of the shoulder part (3) constituting the pair of left and right shoulder belts (2, 2) attached to the school bag (1) A first belt connecting portion (9) integrally formed with a cylindrical guide shaft portion (11) having a core shaft (12) at the center exposed from the inner edge of the shoulder contact portion (3) on one side; ,
A movable piece (23) detachably coupled to the guide shaft portion (11) of the first belt coupling portion (9) is connected to one end of each of the pair of belt portions (21a, 21b), and the belt portions (21a, 21b, 21b) are connected. 21b) a shoulder belt prevention device comprising an adjustment belt body (20) removably attached to a connector (30) comprising a male piece (31) and a female piece (35) at the other end of 21b). Ingredients. 前記第１ベルト連結部（９）は、肩当部（３）の表皮部（４）とクッション部（５）との間に支持される扁平で縦長に形成した取付部（１０）の一側に、中心に芯軸（１２）を有した円柱状のガイド軸部（１１）を一体に形成し、該ガイド軸部の上方には芯軸（１２）をなくして先細に形成した挿入部（１５）を設け、下方には肩当部（３）の下部に縫着固定する停止部（１６）を一体に設けてなることを特徴とする請求項１記載の肩ずれ防止具。 The first belt connecting portion (9) is provided on one side of a flat and vertically attached mounting portion (10) supported between the skin portion (4) of the shoulder portion (3) and the cushion portion (5). A cylindrical guide shaft portion (11) having a core shaft (12) at the center is integrally formed, and the insertion portion (15) is formed by tapering the core shaft (12) above the guide shaft portion. The shoulder slip prevention device according to claim 1, wherein a stop portion (16) for sewing and fixing is integrally provided below the shoulder contact portion (3). 前記ガイド軸部（１１）は、中心に設けた芯軸（１２）の周囲にクッション性を有する緩衝部（１７）を設けてなることを特徴とする請求項１または２記載の肩ずれ防止具。 The shoulder prevention device according to claim 1 or 2, wherein the guide shaft portion (11) is provided with a cushioning portion (17) having a cushioning property around a core shaft (12) provided in the center. . 前記ガイド軸部（１１）は、芯軸（１２）の周囲に設けた緩衝部（１７）と、取付部（１０）の中心に設けたクッション性を有する緩衝板部（１８）とを一体に設けてなることを特徴とする請求項１ないし３のいずれか１記載の肩ずれ防止具。 The guide shaft portion (11) integrally includes a buffer portion (17) provided around the core shaft (12) and a cushion plate portion (18) having cushioning properties provided at the center of the mounting portion (10). The shoulder slip prevention tool according to any one of claims 1 to 3, wherein the shoulder slip prevention tool is provided. 前記可動片（２３）は、前記ベルト部（２１ａ、２１ｂ）の一端を装着するベルト孔（２５）を設けた接続部（２４）と、前記第１ベルト連結部（９）のガイド軸部（１１）に着脱可能に装着する円筒状に形成した軸受部（２６）とを一体に設けてなり、該軸受部の軸心方向に設けた挿通孔（２７）の一側面に前記ガイド軸部（１１）のガイド部（１３）を挿通する挿通溝部（２８）を設けてなることを特徴とする請求項１記載の肩ずれ防止具。 The movable piece (23) includes a connection part (24) provided with a belt hole (25) for mounting one end of the belt part (21a, 21b), and a guide shaft part (9) of the first belt coupling part (9). 11) is integrally provided with a cylindrical bearing portion (26) that is detachably mounted, and the guide shaft portion (27) is formed on one side surface of an insertion hole (27) provided in the axial direction of the bearing portion. 11. The shoulder slip prevention device according to claim 1, further comprising an insertion groove (28) for inserting the guide portion (13) of 11). ランドセル（１）に取付けた左右一対の背負いベルト（２、２）を構成する肩当部（３、３）の表皮部（４）と同じ形状の縦長で幅広に形成した取付部（１０１）の一側に前記肩当部（３）の内側縁から露出する円柱状で中心に芯軸（１１２）を設けたガイド軸部（１１１）を一体に形成してなる第２ベルト連結部（９１）と、
一対のベルト部（２１ａ、２１ｂ）のそれぞれ一端に前記第２ベルト連結部（９１）のガイド軸部（１１１）と着脱可能に連結する可動片（２３）を接続し、前記ベルト部（２１ａ、２１ｂ）の他端に雄型片（３１）と雌型片（３５）とからなる接続具（３０）を着脱可能に取付けた調節ベルト体（２０）とからなることを特徴とする肩ずれ防止具。 One of the vertically long and wide attachment portions (101) having the same shape as the skin portions (4) of the shoulder abutment portions (3, 3) constituting the pair of left and right shoulder belts (2, 2) attached to the school bag (1) A second belt connecting portion (91) formed integrally with a guide shaft portion (111) having a cylindrical shape exposed from the inner edge of the shoulder contact portion (3) on the side and having a core shaft (112) at the center;
A movable piece (23) detachably coupled to the guide shaft portion (111) of the second belt coupling portion (91) is connected to one end of each of the pair of belt portions (21a, 21b), and the belt portion (21a, 21b) is connected. 21b) a shoulder belt prevention device comprising an adjustment belt body (20) removably attached to a connector (30) comprising a male piece (31) and a female piece (35) at the other end of 21b). Ingredients. 前記ガイド軸部（１１１）は、中心に設けた芯軸（１１２）の外周にクッション性を有する緩衝部（１１７）を設け、該ガイド軸部の上方には中心に設けた芯軸（１１２）をなくして先細に形成した挿入部（１５）を形成し、ガイド軸部（１１）の下方に設けた停止部（１６）を前記肩当部（３、３）の下方に縫着固定してなることを特徴とする請求項６記載の肩ずれ防止具。 The guide shaft portion (111) is provided with a cushioning portion (117) having cushioning properties on the outer periphery of the core shaft (112) provided at the center, and the core shaft (112) provided at the center above the guide shaft portion. The insertion part (15) formed in a taper shape is eliminated, and a stop part (16) provided below the guide shaft part (11) is sewn and fixed below the shoulder contact parts (3, 3). The shoulder slip prevention tool according to claim 6 characterized by things. 前記ガイド軸部（１１１）は、芯軸（１１２）の周囲に設けた緩衝部（１１７）と、取付部（１０）の中心に設けたクッション性を有する緩衝板部（１１８）とを一体に設けてなることを特徴とする請求項６または７記載の肩ずれ防止具。 The guide shaft portion (111) integrally includes a buffer portion (117) provided around the core shaft (112) and a cushion plate portion (118) having cushioning properties provided at the center of the mounting portion (10). The shoulder slip prevention tool according to claim 6 or 7, wherein the shoulder slip prevention tool is provided. 前記可動片（２３）は、前記ベルト部（２１ａ、２１ｂ）の一端を装着するベルト孔（２５）を設けた接続部（２４）と、前記第２ベルト連結部（９１）のガイド軸部（１１１）に着脱可能に装着する円筒状に形成した軸受部（２６）とを一体に設けてなり、該軸受部の軸心方向に設けた挿通孔（２７）の一側面に前記ガイド軸部（１１１）のガイド部（１１３）を挿通する挿通溝部（２８）を設けてなることを特徴とする請求項６の肩ずれ防止具。 The movable piece (23) includes a connection part (24) provided with a belt hole (25) for mounting one end of the belt part (21a, 21b), and a guide shaft part (91) of the second belt connecting part (91). 111) and a cylindrical bearing portion (26) that is detachably mounted, and the guide shaft portion (27) is formed on one side surface of an insertion hole (27) provided in the axial direction of the bearing portion. 111. The shoulder slip prevention device according to claim 6, further comprising an insertion groove (28) through which the guide portion (113) of 111) is inserted.

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