JP3006209U - Belt fasteners for carrying luggage - Google Patents

Abstract

(57) [Summary] [Purpose] The thickness and left and right dimensions of the belt fasteners, which allow adjustment of the spacing for mounting a pair of backpack belts such as school bags, have been reduced, resulting in a comfortable feeling and excellent design. Provides fasteners and school bags. [Structure] A box 3 having an opening in an upper portion of a front member 1 and a back member 2 made of a press-formed product of a thin metal plate.
And is accommodated in the box 3, the lower end of which is rotatably supported around the cylindrical parts 15 and 18 which are projected into the box 3, and the belt is connected to the upper end of which projects from the opening. A pair of thin metal levers 4 having a connecting ring holding portion 28 and a spring 5 for biasing the levers 4 inwardly.
And a pin 13 for connecting the front member 1 and the back member to each other through the tubular portions 15 and 18, and a suspending ring 7 provided between the lever 4 so as to be vertically movable. . [Effect] 2/3 to 1/2 compared to the same type of conventional one
It can be manufactured with a certain thickness and right, left, up and down dimensions. Therefore, it can be hidden by the presser skin, and the appearance of the school bag or the like can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a belt fastener for a backpack. More specifically, the present invention relates to a fastener for attaching two belts for carrying a backpack such as a land bag to the upper end portion of the main body of the luggage, which can adjust the belt mounting interval.

[0002]

[Prior art]

 The belt of the backpack is usually equipped with a mechanism for adjusting the length of the belt in order to fit the size of the user. In addition, a recent fastener, especially a fastener for a school bag, has been proposed in which the distance between the attachment positions of the upper end of the belt and the back plate can be adjusted stepwise. For example, the fastener A shown in FIG. 8 includes a base 101 and a front cover 102 attached to the front side thereof. On the front cover 102, a slider 103a is provided so as to be movable in an oblique lateral direction (direction of arrow S1-S2), and a connecting ring holding portion 103 is rotatably provided on the slider 103a. A lock mechanism 104 for locking the slide position of the slider 103a and an unlock mechanism 105 are accommodated between the base 101 and the front cover 102. The lock is released when the push button 107, which is normally urged upward by the spring 106, is pushed downward. The whole body except the panel 106 is made of synthetic resin. Before carrying the backpack, the push button 107 is pushed to release the lock, and the interval between the pair of connecting ring holding portions 103 is adjusted to an appropriate interval. After that, the push button 107 is released and fixed at that interval for use.

A fastener B shown in FIG. 9 is sandwiched between a front member 108 and a back member 109 made of synthetic resin, respectively, and a lower end thereof is rotated around an outer periphery of a boss 110 a for passing a pin 110. A pair of left and right synthetic resin levers 111 that are freely supported and a spring 112 that constantly biases these levers inward are provided. In this case, the distance between the connecting ring holding portions 114 at the upper end of the lever 111 is automatically adjusted according to the tension applied to the belt 113.

Further, a fastener C shown in FIG. 10 is a box 117 made of a metal plate having a pair of slits 116 linearly extending to the left and right, a rod 118 passed through the box 117, and a rod thereof. The slider 120 is slidably provided on the 118 and is integrally formed with a connecting ring holding portion 119 protruding forward from the slit 116, and a spring 121 for urging the slider 120 inward. Note that 122 is a hanging ring that can be moved slightly up and down, and 123 is a rubber bellows that covers the spring 121.

On the other hand, a fastener D that does not have the function of adjusting the interval between the belt mounting positions is known, for example, a fastener D shown in FIG. In this case, a front cover 126 made of leather or synthetic leather having a bending piece 125 for supporting the connecting ring 124 and a base 127 to be attached to the back plate are sewn together, and a hanging ring 128 movable up and down is provided between them. It is provided. This product can be hooked on a hook projected on a wall or the like in a state where the suspension ring 128 is extended like an imaginary line. When carrying the school bag on the back, the suspension ring 128 is retracted as shown by the solid line.

[0006]

[Problems to be solved by the device]

 The conventional fasteners have a large thickness of 10 to 15 mm except for the fastener D in which the distance between the connecting rings 124 of FIG. 11 cannot be adjusted, and the vertical and horizontal dimensions, especially the lateral width, are large. For example, the fastener A of FIG. 8 has a relatively compact front shape, but since the lock mechanism 104 and the unlock mechanism 105 are provided, the thickness of the main body is 12 mm. The connecting member 103 further projects 11 mm from the front cover 102. Further, the lever type fastener B relating to the manufacture of the applicant of FIG. 9 has a simple mechanism and a small thickness, but the lever of the synthetic resin is still required to secure the strength of the main body. The thickness is 10 mm and the left and right dimensions are 125 mm. Further, the metal slide type fastener C of FIG. 8 has a body thickness of 10 mm, and the connecting ring holder 119 further projects by 10 mm. Since the fasteners A and B made of synthetic resin have a large thickness, a tapered surface is formed in the peripheral portion in order to fit the back of the user as much as possible. This is a cause of increasing the vertical dimension.

As described above, since the conventional belt fastener has a large thickness, there is a problem that it is difficult to fit on the user's back. Furthermore, since the front, rear, left, and right dimensions are large, it cannot be covered with skin like the fastener D in FIG. 11, and the fastener is usually exposed on the epidermis of the back plate such as the school bag. Therefore, it is necessary to use the fastener itself as an element of the design, and the mechanic impression is strengthened, making it difficult to harmonize with other parts. Furthermore, it is difficult to attach the cushioning material in a stable state with a modern satchel that has a cushioning material placed under the skin, and the attachment work is extremely complicated.

The present invention provides a belt fastener for a backpack bag that has a small thickness and a small vertical and horizontal dimensions while having a function of automatically adjusting the interval between the belt connecting rings. It is a technical issue to improve the design and expand the degree of freedom in design. Further, the present invention has an object to make the hanging ring movable up and down and to increase the vertical movement amount, regardless of such a small-sized fastener.

[0009]

[Means for Solving the Problems]

 The belt fastener for a backpack according to the present invention comprises a thin box body having an opening at the top formed by combining a front member and a back member, each of which is a molded product of a thin metal plate, and a lower box body at the bottom of the box body. A pair of left and right supporting portions provided rotatably support the vicinity of the lower end thereof, and a cylindrical connecting ring holding portion that is biased forward is provided at an upper end protruding above the opening. It is composed of a pair of left and right levers made of a thin metal plate and springs for biasing the levers inwardly. In such a belt fastener, a vertical guide provided in the central portion of the box, a hanging ring that moves up and down along the guide, and a member for stopping the hanging ring from coming off. It is preferable that a stopper is provided.

Further, the thickness of the box is preferably 7 mm or less, particularly 3 to 5 mm. Further, it is preferable that the lever is formed by folding a single metal plate in two and forming the tubular connecting ring holding portion at the bent portion. It is more preferable to cut and raise to form. Further, it is preferable that the engaging portion also serves as a retaining pin for attaching the box to the backpack, and the supporting portion for rotatably supporting the lever has an inner surface of the box. It is preferable to use the outer peripheral surface of the tubular portion for passing the pin that connects the member and the back member.

The belt fastener of the present invention is, in a preferred specific embodiment thereof, constructed by combining a front member and a back member each made of a molded product of a thin metal plate having a flat plate portion and a wall portion rising from the periphery thereof. A box body having a slit-shaped opening in the upper portion and having a thickness of 3 to 7 mm, a pair of left and right tubular portions provided in the lower portion of the box, and a tubular member which is passed through the tubular portion to form a front member. A pair of left and right pins that connect the back member and its lower end are rotatably supported by the outer circumference of the cylindrical portion, and the upper end side protrudes above the opening and is biased forward at the upper end. A pair of left and right metal thin plates, each of which is formed by folding a pair of left and right metal thin plates, and springs that bias the levers inward, and the box body. Provided in the center of Direction guide, a suspension ring that moves up and down along the guide and is formed by bending a substantially single metal rod, and a locking portion for preventing the suspension ring from coming out. ing.

A backpack according to the present invention comprises a back plate, a belt fastener according to claim 1 arranged on the back plate, and a front member of the belt fastener. It is characterized by having a presser bar that can be sewn on a plate and a stop pin that integrally fixes the back plate, the belt fastener and the presser bar.

In the fastener of the present invention, since the box body is constructed by combining the front member and the back member made of a molded product made of a thin metal plate, sufficient strength is maintained and the internal cavity The thickness can be made thin, for example, about 3 to 7 mm, while ensuring sufficient dimensions. And if it is such a thickness, it is not necessary to form a taper on the periphery. Further, since the lever is also formed of a thin metal plate, it is possible to maintain sufficient strength even if the thickness is thin and the width is small. Therefore, a sufficient rotation angle can be maintained even in a narrow cavity. Therefore, the thickness of the box and the vertical and horizontal dimensions can be significantly reduced, and after the box is attached to the back plate such as the school bag, it can be hidden from the upper side with the presser foot, and the presser foot can be removed except for the upper part. You can sew around the skin. Therefore, it is easy to give a sense of unity in design with other parts.

As described above, since the lever can maintain a sufficient rotation angle even in a narrow cavity, it is easy to provide a vertically movable suspension ring at the center of the cavity, and the vertical stroke of the suspension ring can be easily adjusted. Can also be larger. Therefore, the hanging ring extending upward can be used to easily hook the school bag or the like on the hook attached to the wall, and the hooked state can be stably maintained.

[0015]

【Example】

 Next, an embodiment of a belt fastener for a backpack according to the present invention will be described with reference to the drawings. 1 is a perspective view before assembly showing an embodiment of the fastener of the present invention, FIG. 2 is a front view after assembly without the front member of the fastener of FIG. 1, and FIG. 3 is a III-III line of FIG. FIG. 4 is a cross-sectional view, FIG. 4 is a plan view of the fastener of FIG. 2, FIG. 5 is an enlarged sectional view taken along line VV of FIG. 2, and FIG. 6 is a front view showing an embodiment of a school bag equipped with the fastener of the present invention. FIG. 7 is a sectional view taken along line VII-VII of FIG.

The fastener E shown in FIG. 1 is a box 3 made up of a front member 1 and a back member 2 each made of a molded product of a thin metal plate, and a pair of left and right levers 4 housed in the box 3. , 4, springs 5 and 5 for urging the levers toward the center, and a suspension ring 7. The front member 1 has a flat plate portion 9 having a substantially rectangular shape with semicircular mounting portions 8 protruding at the upper ends of the left and right sides, and a wall rising from the peripheral edge except the upper portion of the plate portion 9. And part 10. A hole 12 is formed in each of the mounting portions 8 and 8 of the plate portion 9 and in the middle thereof, through which a retaining pin 11 for attaching the fastener E to the bag is inserted. Further, on the left and right below the plate portion 9, as shown in detail in FIG. 3, a hole 14 through which a pin 13 for connecting the front member 1 and the back member 2 is inserted, and a cylindrical portion rising around the hole. A recessed portion 16 for accommodating the pin 15 and the head 13a of the pin 13 is formed. The inner peripheral surface of the tubular portion 15 is a portion that supports the connecting pin 13, while the outer peripheral surface is a support portion that rotatably supports the lever 3. Such a front member 1 is formed by blanking a thin steel plate having a thickness of 0.6 to 1.0 mm, particularly 0.7 to 0.8 mm, and flanging the wall portion 10 or burring the tubular portion 15. It can be manufactured by press molding such as shaving. A plated steel sheet such as a galvanized steel sheet or a surface-treated steel sheet may be used, and a surface treatment such as chrome plating may be performed after molding.

The back member 2 includes a plate portion 17 having substantially the same shape as the front member 1, and a wall portion 18 rising from the periphery thereof. The height of the wall portion 18 is considerably lower than that of the wall portion 10 of the front member except for the semi-circular mounting portions 19 at the upper left and right ends and the claw portions 20 provided at the tips of the mounting portions 19. The claw portion 20 has substantially the same height as the wall portion 10 of the front member 1 in order to properly maintain the distance between the front member and the back member even when the locking pin 11 is tightened. The dimensions of the wall portion 18 are such that they fit into the inner circumference of the wall portion 10 of the front member 1. Further, also in the back material 2, holes 21 for passing the three retaining pins 11 are formed respectively at the upper ends thereof, and holes 22 for passing the connecting pins 13 are formed on the lower left and right sides, and standing holes are provided around the holes. A cylindrical portion 23 that rises and a recess 24 that accommodates the head portion 13b on the back side of the pin 13 are formed. The tubular portion 23 is also a support portion of the lever 4. Further, in the vicinity of the center of the plate portion 17 of the back member 2, a pair of diagonally cut and raised portions 25, 25 extending in the vertical direction are formed so as to sandwich the hole 21 for the central stop pin 13. The inner surfaces of the diagonal cut-and-raised parts 25, 25 are guide surfaces for guiding the vertical movement of the suspension ring 7. Outside the oblique cut-and-raised parts 25, 25, small rectangular cut-and-raised parts 26, 26 are formed, respectively. As shown in FIG. 2, they act as stoppers on the center side of the levers 4, 4. Further, a pair of small protrusions 27, 27 for catching the springs 5, 5 so as not to slip are formed on the left and right portions of the wall portion 18 of the back member 2. The back member 2 can also be manufactured by press molding a metal thin plate similar to the front member 1. Of the wall portion 10 around the mounting portion 8 of the front member 1, the end edge (10a in FIG. 4) of the upper end facing inward can be used as the stopper on the outer side of the lever 4.

Although only the left side of the lever 4 is shown in FIG. 2, a cylindrical connecting ring holding portion 28 for rotatably holding the connecting ring 30 and a portion extending below the connecting ring holding portion 28. It is composed of a thin plate-shaped leg portion 29, and in the case of the present embodiment, one metal thin plate folded in two is used. That is, as shown in FIG. 3, a single metal plate having a wide central portion to form the connecting ring holding portion 28 and continuous narrow portions on both upper and lower sides thereof is formed as shown in FIG. After being rolled into a tubular shape, it is bent toward the front side in the mounted state to be biased, thereby forming a connecting ring holding portion 28, and two narrow portions are overlapped to form a leg portion 29. The connecting ring 30 is preferably attached before the legs 29 are fitted together. Further, the two plates forming the leg portion 29 may be joined by welding or adhesion. By constructing the lever 4 in this way, the lever 4 having sufficient strength can be easily manufactured, and the back and forth play is almost eliminated when assembled. However, the present invention is not limited to this, and one end of a metal plate may be curved in a tubular shape to form a connecting ring holding portion, and in some cases, a tubular connecting ring may be formed. Alternatively, the plate-shaped leg portion manufactured separately from the holding portion may be joined by welding or the like.

A hole 31 for passing the tubular portion 15 of the front member 1 or the tubular portion 18 of the back member 2 is formed near the lower end of the leg portion 29. A protrusion 32 that engages with the spring 5 is formed on the side edge portion. Although the compression coil spring is used as the spring 5 in this embodiment, a tension spring or a torsion coil spring may be used. In short, any spring may be used as long as it biases the levers 4 and 4 so that the upper ends thereof rotate inward.

In the case of this embodiment, the hanging ring 7 is formed by bending a single metal rod. That is, the suspension ring 7 has, as shown in FIG. 2, a hook portion 33 having a fan shape and a leg portion 34 extending in parallel from the lower end thereof, and the lower end 34a of the leg portion 34 is placed inside the hook portion 33, respectively. It is bent so that it is welded together to form a single ring to have strength, and the central locking pin 11 has a retaining function. Then, in this embodiment, a synthetic resin tube is covered around the hook portion 33 to cause heat shrinkage. As shown in FIG. 3, it is preferable that the hooking portion 33 is tilted slightly forward so that the hooking portion 33 can be easily hooked.

In each of the components configured as described above, the hole 31 of the lever 4 is fitted into the lower tubular portion 18 of the back member 2, and the springs 5 and 5 are connected to the protrusion 32 of the lever 4 and the back member. Inserted between the small wall 27 and the small protrusion 27 of the second wall 18, the front member 1 is covered on the back member 2 while being guided by the claw 20, and the walls 10, 18 are fitted together. Then, the connecting pin 13 is inserted from the hole 14 of the front member 1 to penetrate the hole 22 of the back member 2, and the portion protruding to the back surface is caulked, as shown in FIG. Combine with. In this embodiment, since the retaining pin 11 for attaching the fastener E to the bag serves as an engaging portion for preventing the suspension ring 7 from coming off, the suspension ring 7 is still connected to the box 3 at this stage. Do not do this, but connect when attaching to the back plate described later.

As shown in FIG. 2, the fastener E assembled as described above uses the lever 4 for connecting when a force F1 for spreading the connecting ring 30 attached to the upper end of the lever 4 in the left-right direction is exerted. The pin 13 is rotated in the direction of the arrow F1 to a position where it balances the biasing force of the spring 5 according to the force. Then, the force applied to the fulcrum of the lever 4 is accurately transmitted to the box body 3 by the tubular portion 15 of the front member 1, the tubular portion 18 of the back member 2 and the pin 13 penetrating them. At that time, since the box is made of a thin metal plate, the internal space is large. Moreover, since the lever 4 is made of metal, sufficient strength can be obtained even if the width W is narrowed. Therefore, the swing stroke of the lever 4 can be sufficiently secured even if the lever 4 is short. Since the lever 4 may be short, it is possible to obtain sufficient rigidity and strength even with a thin metal plate, thereby further reducing the width W of the lever. Also, since the box has small vertical and horizontal dimensions, it is possible to maintain sufficient rigidity and strength even with a thin metal plate. In this way, the dimensions of the box, the thickness of the plate material forming the box, and the length and width of the lever work in a chain to reduce the dimensions of each other, and are generally found in the past. Thus, it is possible to construct a belt fastener E that is thin and has a small size in the vertical and horizontal directions.

Further, in FIG. 3, the forward force F2 applied to the lever 4 is supported by the vicinity of the upper part of the lever 4 coming into contact with the inner surface of the front member 1, so that the lever 4 made of a thin metal plate is used. Even if there is, it can withstand the force F2 sufficiently. When a shocking force acts on the connecting ring 30, most of the component of the force in the horizontal direction and a part of the component in the vertical direction are absorbed by the spring 5. Further, the component in the front-back direction is easily absorbed by the flexibility of the lever 4 itself in the front-rear direction.

As shown in FIG. 6 and FIG. 7, the fastener E described above, for example, applies metal thin metal plates 37 and 38 to the back plate 36 of the school bag 35, and then the locking pin 11 Fixed. The locking pin 11 may be a rivet-shaped one or a screw and a nut. Further, in the case shown in FIG. 6 and FIG. 7, a holding skin 39 is put on the fastener E, a front pad 37 is put on it, and the head 11a of the stop pin 11 holds the fastener. Then, except for the upper part having the opening, the presser leather 39 is sewn to the back plate 36 with the thread 40. By covering the metal cover box in this manner, the metal box body can be covered, and the outer appearance of the school bag is entirely covered with leather. Moreover, since the size of the fastener E is as small as about 90 mm on the left and right and the thickness is about 5 mm, the user does not feel uncomfortable. Particularly, recently, a school bag having a U-shaped cushion portion 42 extending from a side portion to a lower portion of the back plate 36 is used. However, since the fastener E and the presser bark 36 have a narrow width, such a cushion is used. Since it does not interfere with the portion 42 and is thin, the cushioning function of the cushion portion is not impaired.

In the above embodiment, since the connecting ring holding portion 28 at the upper end of the lever 4 is biased to the front side, the connecting ring 30 and the fastener E to which the belt is attached are attached to the back plate 36 of the school bag 35. Even after fixing, the presser foot 36 can be easily sewn with a sewing machine. Further, the hole 31 at the lower end of the lever 4 is supported on the outer periphery of the cylindrical portions 15 and 18 protruding from the front member 1 and the back member 2, but is rotatably supported on the outer periphery of the connecting pin 13, for example. You may let me. In that case, the pin 13 may be provided with a thickened portion or spacer for maintaining the distance between the front member and the back member, and the lever 4 may be supported on the outer periphery thereof. Although the guides for the suspension ring and the stoppers for the levers are formed by cutting and raising a part of the back member, of course they may be formed by cutting and raising the front member. Parts may be attached.

[0026]

[Effect of device]

 The belt fastener of the present invention is thinner (about 2/3 to 1/2) than conventional ones while maintaining sufficient strength and the adjustment amount of the belt interval, and the vertical and horizontal dimensions are Is also small. Therefore, when it is attached to a backpack such as a school bag, it is not an obstacle for the user, and it is easy to hide it with a presser bark.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a fastener of the present invention before assembly.

FIG. 2 is a front view of the fastener of FIG. 1 after assembly without the front member.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of the fastener of FIG.

5 is an enlarged cross-sectional view taken along line VV of FIG.

FIG. 6 is a front view showing an embodiment of a school bag equipped with the fastener of the present invention.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a partially cutaway front view showing an example of a conventional fastener.

FIG. 9 is a partially cutaway front view showing another example of a conventional fastener.

FIG. 10 is a front view showing another example of a conventional fastener.

FIG. 11 is a front view showing another example of a conventional fastener.

[Explanation of symbols]

 E Fastener 1 Front member 2 Back member 3 Box 4 Lever 5 Spring 7 Suspension ring 28 Connection ring holding part 35 School bag 36 Back plate 39 Presser skin

Claims (9)

[Scope of utility model registration request] 1. A fastener for attaching a belt for carrying a backpack to the main body of the bag, which has an opening at an upper portion and is constituted by combining a front member and a back member, each of which is a molded product of a thin metal plate. A thin box provided with the pair, and a pair of left and right support parts provided in the lower part of the box rotatably support the vicinity of the lower end thereof, and a cylinder biased forward at the upper end protruding above the opening. A belt fastener for a backpack comprising a pair of left and right levers made of a thin metal plate, each of which is provided with a ring-shaped connecting ring holding portion, and a spring that biases the levers inward. 2. A vertical guide provided in the central portion of the box, a suspension ring that moves up and down along the guide, and a locking portion for stopping the suspension ring from coming out. The belt fastener according to claim 1, which is provided. 3. The belt fastener according to claim 1, wherein the box has a thickness of 3 to 7 mm. 4. The belt fastener according to claim 1, wherein the lever is formed by folding a single metal plate in two and forming a tubular connecting ring holding portion at the bent portion. 5. The belt fastener according to claim 2, wherein the guide is formed by cutting and raising a front member or a back member. 6. The belt fastener according to claim 2, wherein the engaging portion also serves as a retaining pin for attaching the box body to the backpack. 7. A support part for rotatably supporting the lever is an outer peripheral surface of a tubular part formed in the box for inserting a pin for connecting a front member and a back member of the box. The belt fastener described in 1. 8. A fastener for attaching a belt for carrying a backpack to the main body of the bag, the front member and the back being made of a molded product of a metal thin plate each having a flat plate portion and a wall portion rising from the periphery thereof. A box body having a slit-shaped opening in the upper portion and having a thickness of 3 to 7 mm, which is formed by combining members, a tubular portion provided in a left and right pair below the box body, and the tubular portion. And a pair of left and right pins connecting the front member and the back member, the lower end of which is rotatably supported by the outer periphery of the tubular portion, the upper end of which protrudes upward from the opening, and the front of which is forward of the upper end. A pair of left and right levers, each of which is formed by folding a single thin metal plate, and a spring that biases the levers inwardly. And inside the box A vertical guide provided in the section, a suspension ring that moves up and down along the guide and is formed by bending a substantially single metal rod, and a member for stopping the suspension ring from coming out. Belt fastener for backpack that consists of a stop. 9. A back plate, a belt fastener according to claim 1, which is arranged on the back plate, and a presser leather that is laid on the front member of the belt fastener and sewn to the back plate except the upper portion. And a backing bag having the back plate, the belt fastener and the presser bar integrally fixed thereto.