JP3189741U - School bag shoulder belt upper end mounting ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shoulder belt upper end mounting ring of a school bag capable of preventing the school bag from falling backward and suppressing a manufacturing cost. SOLUTION: A hollow mounting ring main body 2 including a mounting base fixed to an upper portion of a back plate of a school bag and a front side base 4 covering the front side of the mounting base, and an upper portion are extended above the mounting ring main body. A pair of connecting arms 6 having a connecting hole 15 extending in the left-right direction, which is rotatably connected to the inside of the mounting ring body in the state, and a connecting arm 6 provided at the upper end, and the tip of the connecting arm are connected to each other. Shoulder belt upper end mounting ring 1 having a spring 10 urged in a close direction and a pair of substantially triangular connecting rings 11 in which the upper end of the shoulder belt of the school bag is fixed and the lower side portion is inserted into the connecting hole. The pair of connecting arms was made of metal to make the connecting hole elliptical, and the portion of the connecting ring inserted into the connecting hole was made elliptical to match the shape of the connecting hole. [Selection diagram] Fig. 1

Description

  The present invention relates to a shoulder belt upper end attachment ring of a school bag, and more particularly to a shoulder belt upper end attachment ring of a school bag that can prevent the school bag from falling backward.

  As is well known, the school bag is supported on the child's body only by the shoulder belt. At this time, the length of the shoulder belt is optimal, and therefore, if almost the entire shoulder belt fits the child's body, The load due to the weight of the school bag is applied to the entire body of the child that is in contact with the shoulder belt through the shoulder belt, thereby reducing the weight of the school bag that the child receives.

  However, in the case of the lower grades, which are just before enrollment, the whole school bag including the shoulder belt is larger than the size of the body, and if the shoulder belt is too short, the operation of carrying the school bag and lowering it Since the movement cannot be performed smoothly, the shoulder belt is generally slightly longer, especially in the lower grades.

  Then, when carrying the school bag, it becomes difficult for the entire shoulder belt to fit the child's body evenly, which causes the school bag to fall to the rear side of the child, so that the upper part of the school bag body And a gap between the back of the child and the weight of the school bag concentrates on the shoulder of the child.

  At this time, for first-year students who have just entered the school, the average weight is around 21 kg, while the school bag is around 1 kg and the textbooks are around 1 kg. Therefore, even if the school bag fits the back of the child, the weight of the school bag becomes painful, but a gap is created between the child's back and the back of the school bag, which causes the child to If the weight of the school bag that you feel increases, it may be difficult for you to go to school, and you may not want to go to school.

  Therefore, in the past, there has been proposed an attachment ring that can be attached to the school bag with the shoulder belt facing upward. And if this method is adopted, the school bag is pulled obliquely upward toward the back side of the child, so that it is prevented from falling back and creating a gap between the back of the child and the back part of the school bag. be able to.

JP 2004-81800 A JP 2003-339419 A Utility Model Registration No. 3105849 Utility Model Registration No. 3118031

  However, it can be pointed out that the above-described conventional mounting ring increases the manufacturing cost. That is, in Patent Documents 1 and 2, a box-shaped insertion portion that accommodates the upper end of the shoulder belt is formed at the upper ends of the left and right swing levers, and the upper end of the shoulder belt is fitted and fixed in the insertion portion. In Patent Document 3, an insert molding method is used to fix the connecting ring for attaching the upper end of the shoulder belt to a pair of left and right attachments made of synthetic resin that are swingably attached to the upper part of the back plate of the school bag. Furthermore, in Patent Document 4, since the metal pipe is inserted into the connecting hole of the synthetic resin fitting, in any case, the number of manufacturing steps is increased, thereby reducing the manufacturing cost. The problem of going up is considered.

  Therefore, an object of the present invention is to provide a shoulder belt upper end mounting ring of a school bag that can prevent the school bag from falling backward and can reduce the manufacturing cost.

The shoulder belt upper end mounting ring of the school bag of the present invention is
A hollow mounting ring body comprising: a mounting base attached to the upper part of the back plate of the school bag; and a front side base covering the front side of the mounting base;
A pair of connections provided at the upper end with a connecting portion having a connecting hole extending in the left-right direction and rotatably connected in the mounting ring body with the upper portion extending above the mounting ring body Arm for,
A spring housed in the mounting ring main body and biased in the direction in which the distal ends of the connecting arms are close to each other;
In the shoulder belt upper end mounting ring of the shoulder bag, each upper end of the shoulder belt of the school bag is fixed and the lower side portion has a pair of substantially triangular connection rings inserted into the connection hole.
The pair of connecting arms are made of metal, and the connecting hole in the connecting portion is made flat.
A portion inserted into the connection hole in the connection ring is flattened according to the shape of the connection hole, thereby preventing the connection ring from rotating with respect to the connection portion. Yes.

  The shoulder belt upper end mounting ring of the school bag of the present invention has a pair of connecting arms each having a connecting portion having a connecting hole extending in the left-right direction, and the upper ends of the shoulder belt shoulder belts fixed to the lower side. In the shoulder belt upper end attaching ring of the shoulder bag having a pair of substantially triangular connecting rings inserted into the connecting holes at the upper end parts of the connecting arms, the pair of connecting arms are made of metal and the connecting holes in the connecting part That the portion inserted into the connecting hole in the connecting ring is made flat according to the shape of the connecting hole, thereby preventing the connecting ring from rotating with respect to the connecting portion. It is a feature. To that end, the inventions described in Patent Documents 1 and 2, in which a box-shaped insertion portion that accommodates the upper end of the shoulder belt is formed at the upper ends of the left and right swing levers, and the upper end of the shoulder belt is fitted and fixed in the insertion portion. And the invention described in Patent Document 3 in which a fitting that is swingably attached to the upper portion of the back plate of the school bag is made of synthetic resin and a connecting ring for attaching the upper end of the shoulder belt to the fitting by insert molding is fixed. Or unlike the invention of patent document 4 which inserts a metal pipe in the connection hole of a synthetic resin attachment, in the state which faced the shoulder belt in the upward direction, reducing manufacturing man-hours and suppressing manufacturing costs. It is possible to obtain an attachment ring that can be attached to the school bag.

It is the figure which showed the Example of the shoulder belt upper end attachment ring of the school bag of this invention from the front. It is the figure which showed the attachment ring main body in the Example of the shoulder belt upper end attachment ring of the school bag from the upper surface. It is sectional drawing for demonstrating the connection hole in the Example of the shoulder belt upper end attachment ring of the school bag of this invention. It is sectional drawing for demonstrating the connection hole in the Example of the shoulder belt upper end attachment ring of the school bag of this invention.

  The shoulder strap upper end mounting ring of the school bag of the present invention has a hollow mounting ring body, and this mounting ring body covers a mounting base that is mounted on the upper part of the back plate of the school bag and a front side of the mounting base. It is configured with a front side base.

  Also, the shoulder belt upper end mounting ring of the school bag of the present invention has a pair of connection arms, each of which is provided with a connection portion having a connection hole extending in the left-right direction at the upper end portion, and an upper portion. In a state of extending upward from the mounting ring body, it is rotatably connected to the mounting ring body, and the tip portions are urged toward each other by a spring disposed in the mounting ring body. ing.

  Furthermore, the shoulder belt upper end mounting ring of the present invention has a pair of connecting rings to which the upper ends of the shoulder belts of the school bag are fixed. By being inserted into the connecting hole of the connecting portion, the connecting arm is connected to the connecting arm, whereby the shoulder belt of the school bag can be connected to the shoulder belt upper end mounting ring of the present invention.

  In the present invention, the pair of connecting arms are made of metal, and the connecting portion is processed into a flat shape by processing the connecting portion into a flat shape. The portion to be inserted into is formed in a flat shape in accordance with the shape of the connecting hole, thereby preventing the connecting ring from rotating with respect to the connecting portion.

  Here, a rotation preventing portion for preventing the rotation of the shoulder belt may be provided on the upper side portion of the connection ring to which the shoulder belt is fixed, so that the shoulder belt rotates with respect to the connection ring. This can be prevented and the shoulder belt can be attached to the school bag with the shoulder belt facing upward.

  In addition, the latching portion having the latching ring at the tip may be locked to the mounting ring main body so that the lower part is inserted into the mounting ring main body so as to be movable in the vertical direction. It is possible to hang it on the like.

  An embodiment of the shoulder belt upper end attaching ring (hereinafter simply referred to as “attaching ring”) of the school bag of the present embodiment will be described with reference to the drawings. FIG. 1 is a view showing the attaching ring of the present embodiment from the front. .

  In the figure, reference numeral 1 denotes an attachment ring of this embodiment, and the attachment ring 1 in this embodiment has a hollow attachment ring body. That is, in the figure, 2 is a mounting ring main body, and FIG. 2 is a view showing the mounting ring main body 2 from above. In this embodiment, the mounting ring main body 2 has a deformed horizontally long rectangular shape. The mounting base 3 is attached to the back plate of the school bag, and the front base 4 is mounted on the front side (on the side of the school bag) of the mounting base 3.

  Further, the front base 4 has a peripheral portion 5 excluding an upper side portion, and an edge portion 5 protrudes toward the mounting base 3 side, whereby the mounting ring body 2 is hollow, and a screw or the like is provided. 19 is attached to the back plate of the school bag.

  Next, 6 is a connection arm in the figure. That is, the mounting ring 1 of the present embodiment has a pair of connecting arms 6, and each of the connecting arms 6 is rotatable in the vicinity of the lower end portion by the shaft 7 in the mounting ring main body 2. Are connected to the mounting ring body 2.

  Each of the pair of connecting arms 6 extends through the slit 9 formed at the upper end of the mounting ring main body 2 and extends above the mounting ring main body 2. A connecting portion 8 for attachment is formed.

  And the said connection part 8 is made into the cylindrical shape or flat cylindrical shape, and the connection hole 15 is formed toward the longitudinal direction.

  Further, the width dimension of the slit 9 on the left and right sides is longer than the width dimension of the connecting arm 6, so that the movement of the connecting arm 6 in the left-right direction can be performed by a predetermined distance. Only allow.

  Next, 10 is a spring in the figure. That is, in the mounting ring 1 of the present embodiment, a spring 10 is accommodated in the mounting ring main body 2, and the connecting arm 6 is urged by the spring 10 in a direction in which the distal end portions are close to each other. .

  Therefore, with this configuration, each of the pair of connecting arms 7 opens in the left-right direction by applying a pressure in a direction in which the distal end portions are separated from each other, and in this state, the pressure is released so that the connecting arms 7 Can be restored to the initial state. This makes it possible to widen the belt when carrying the back of the school bag, making it easier to carry the school bag.

  In the figure, reference numeral 11 denotes a connecting ring for connecting the shoulder belt of the school bag to the mounting ring 1. The connecting ring 11 is formed by deforming a metal round bar into a substantially triangular shape, and includes a lower side portion 12 and an upper side portion that is connected obliquely upward to one end of the lower side portion 12. 13 and a vertical side portion 14 connected to the other end of the lower side portion 12 and connected to the distal end portion of the upper side portion 13 at the distal end portion, and the lower side portion 12 is connected to the connecting portion. 8 is inserted into the connecting hole 15, and the upper ends of the shoulder belts of the school bag are fixed to the upper side portion 13, whereby the shoulder belt is connected to the connecting arm 6.

  Here, the connection structure between the connection ring 11 and the connection arm 6 will be described. FIG. 3 is a cross-sectional view showing a cross-sectional structure viewed in the longitudinal direction of the connection portion 8, and FIG. It is sectional drawing which showed the connection part 8 in the arm 6 and the structure of the vicinity, In the figure, the connection hole 15 formed in the said connection part 8 is formed in the vertically long ellipse shape. In this embodiment, the connecting arm 6 is made of metal, and the connecting hole 15 having a cylindrical shape is processed into a flat shape so that the connecting hole 15 has a vertically long elliptical shape.

  On the other hand, in this embodiment, the portion inserted into the connection hole 15 in the lower side portion 12 of the connection ring 11 is also formed into a vertically long ellipse according to the shape of the connection hole 15, and the connection hole 15, the lower side portion of the connecting ring 11 is fitted, and this prevents the connecting ring 11 from rotating with respect to the connecting portion 8. In this embodiment, the connecting ring 11 has a lower side portion 12 cut near the center portion, and ends of the lower side portion of the connecting ring 11 are inserted from both sides in the connecting hole 15, respectively. Thus, the connecting ring 11 is connected to the connecting hole 15.

  Thus, in the present embodiment, the connecting arm 6 is made of metal, and the cylindrical connecting portion 8 at the tip is processed into a flat shape so that the connecting hole 15 is formed into a vertically long elliptical shape. 15 is connected to the connecting arm 6 by inserting the lower side portion 12 of the connecting ring 11 formed into a vertically long oval shape in accordance with the shape of the connecting hole 15. A method of connecting the upper end of the shoulder belt by forming an insertion portion, a method of fixing the connecting ring to the synthetic resin fitting by insert molding, or a metal pipe in the connecting hole of the synthetic resin fitting Unlike the method of inserting and connecting the connecting rings, it is possible to reduce the number of manufacturing steps, thereby reducing the manufacturing cost.

  Next, in the figure, 16 is a rotation prevention side, and in the attachment ring 1 of the present embodiment, the rotation prevention side 16 makes it possible to attach the shoulder belt to the attachment ring in the upward direction. Yes. That is, in the mounting ring 1 of the present embodiment, the metal plate-like rotation prevention side 16 is fixed to the upper side portion of the connection ring 11 by welding, bonding or the like, and the shoulder belt is connected to the upper side portion 13. In this case, the upper end portion of the shoulder belt covers the rotation preventing side 16, the upper end portion of the shoulder belt is hung around the upper side portion 13, and then the rotation preventing side 16 is sandwiched. The rotation prevention side 16 and the shoulder belt are penetrated and fixed by a rivet or the like, and the upper end portion of the shoulder belt is fixed to the connecting ring 11.

  Therefore, in the shoulder belt connected to the attachment ring 1 of the embodiment, the rotation of the shoulder belt with respect to the connection ring 11 is prevented by the presence of the rotation prevention side 16, and the connection as described above. Since the ring 11 is prevented from rotating with respect to the connecting arm 6, it is possible to attach the shoulder bag to the attachment ring with the shoulder belt facing upward. It is possible to prevent a gap from being generated between the child's back and the back portion of the school bag.

  The attachment ring 1 of the present embodiment has a hooking portion 17 for hanging the school bag on a hook or the like. The hooking portion 17 is an endless vertically long ellipse with a large diameter at the upper end. A retaining ring 18 is provided. The lower portion is inserted into the mounting ring main body 2 so as to be movable upward with the hook ring 18 protruding upward from the mounting ring main body, and further penetrates the hooking portion 17 in the mounting ring main body. The shaft member 19 such as a screw is prevented from popping out from the mounting ring main body 2.

  Next, the operation of the mounting ring 1 of this embodiment configured as described above will be described. The mounting ring 1 of this embodiment includes a pair of connecting arms 6, a spring 10, a connecting ring 11, and a latching portion 17. In the state of being equipped, the attachment ring main body 2 is attached to the upper part of the back plate of the school bag by screws 19 or the like. At the same time, as described above, the upper end of the shoulder belt of the school bag is connected to the connecting ring 11 with the rotation prevention side 16 sandwiched therebetween.

  Then, as described above, the connecting ring 11 is prevented from rotating with respect to the connecting portion of the connecting arm 6, and the shoulder belt is prevented from rotating with respect to the connecting ring 11 by the rotation preventing side 16. Thus, it is possible to attach the shoulder belt to the attachment ring with the shoulder belt facing upward.

  At this time, in this embodiment, the connecting arm 6 is made of metal, and the connecting hole 15 is formed into a vertically long ellipse by processing the cylindrical connecting portion 8 at the tip of the connecting arm into a flat shape. By inserting the lower side portion 12 of the connecting ring 11 formed into a vertically long oval shape in accordance with the shape of the connecting hole 15 into the connecting hole 15, the connecting ring 11 is connected to the connecting arm 6. A method of forming a box-shaped insertion part to connect the upper end of the shoulder belt, a method of fixing the connecting ring to the synthetic resin fitting by insert molding, or a connecting hole of the synthetic resin fitting Unlike the method of inserting a metal pipe and connecting the connecting rings, it is possible to reduce the number of manufacturing steps, thereby reducing the manufacturing cost.

  Therefore, according to the attachment ring of the present embodiment, the shoulder belt can be prevented from falling backward by attaching it to the school bag with the shoulder belt facing upward, and the manufacturing cost can be reduced by reducing the number of manufacturing steps. It is also possible.

  As described above, in the present embodiment, the connection hole 15 is formed in a vertically long ellipse shape, and the portion inserted into the connection hole 15 in the lower side portion 12 of the connection ring 11 is also formed in the connection hole 15. In the mounting ring 1 of the present invention, the portion inserted into the connection hole 15 in the lower side portion 12 of the connection hole 15 and the connection ring 11 is not necessarily long. There is no need to make an ellipse, and any shape can be used as long as the connection ring 11 can be prevented from rotating with respect to the connection portion 8. Other shapes may also be used.

  In the present invention, it is possible to obtain an attachment ring that can be attached to the school bag with the shoulder belt facing upward while suppressing the manufacturing cost. is there.

DESCRIPTION OF SYMBOLS 1 Mounting ring 2 Mounting ring main body 3 Mounting base 4 Front side base 5 Edge part 6 Connection arm 7 The axis which supports a connection arm 8 Connection part 9 Slit 10 Spring 11 Connection ring 12 Lower side part 13 Upper side part 14 Vertical side part 15 Connecting hole 16 Rotation prevention side 17 Hook 18 Hook ring 19 Screw

Claims (3)

A hollow mounting ring body (2) comprising: a mounting base (3) attached to the upper part of the back plate of the school bag; and a front side base (4) covering the front side of the mounting base (3);
A connecting portion (15) having a connecting hole (15) extending in the left-right direction and rotatably connected in the mounting ring body (2) with the upper portion extending above the mounting ring body (2). 8) a pair of connecting arms (6) provided at the upper end;
A spring (10) that is housed in the mounting ring body (2) and that biases the distal ends of the connecting arms (6) in a direction approaching each other;
The shoulder belt upper end mounting of the shoulder bag having the upper ends of the shoulder belts of the school bag and having a pair of substantially triangular connecting rings (11) whose lower side portions are inserted into the connecting holes (15). In ring (1),
While making a pair of said connection arms (6) metal, the connection hole (15) in the said connection part (8) is made into a flat shape,
A portion of the connecting ring (11) that is inserted into the connecting hole (15) is flattened according to the shape of the connecting hole (15), thereby connecting the connecting ring (8) to the connecting ring (8). 11) The shoulder belt upper end attachment ring of the school bag characterized by preventing rotation.   The school bag according to claim 1, wherein a rotation prevention side (16) for preventing rotation of the shoulder belt is provided on an upper side portion of the connection ring (11) to which the shoulder belt is fixed. The shoulder belt upper end mounting ring.   The lower end of the latching portion (17) having the retaining ring (18) at the tip is inserted into the mounting ring body (2), and the mounting ring body (2) is movable in the vertical direction. The shoulder belt upper end attachment ring of the school bag according to claim 1 or 2, wherein the ring is locked.

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