JP2009112326A - Mobile phone holder threaded on belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile phone holder threaded on a belt that is capable of retaining a foldable mobile phone without bulkiness and ensures a sense of unity with garments, and that is capable of coping with various models of mobile phones and allows instantaneously putting on and taking off of mobile phone. <P>SOLUTION: The mobile phone holder has belt insertion parts 12 perforated so as to insert a belt B1 at both ends of a base plate body 11 having a thin plate shape which can be interposed in a housing interspace of the foldable mobile phone K, the holder is attached to the belt B1, and adapted so that a foldable mobile phone K is detachably hung on the base plate body 11 to thereby attain retention thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a belt insertion holder for a mobile phone that detachably holds a foldable mobile phone.

In recent years, mobile phones have not only phone calls but also functions as e-mails, the Internet, cameras, and even payment methods due to technological innovation. It is becoming. At present, mobile phones are mainly foldable with a display unit case and an operation unit case connected via a rotating shaft because of the need for a large screen to display such information. Most people carry it in their outerwear or trouser pockets because they need to be ready to use. Moreover, what attached to the belt the case which accommodates a mobile telephone like patent document 1 as a mobile telephone holder which attaches to clothing and hold | maintains a mobile telephone has been used from before. Mobile phone holders that hang and hold a foldable mobile phone as in Patent Literature 2 and Patent Literature 3 are also disclosed.
JP-A-9-271408 JP 2005-65753 A Utility Model Registration No. 3099671

  However, when the mobile phone is put in a pocket of clothes, the clothes are pulled by the weight of the mobile phone, and the pocket swells due to the thickness. Also, in a hustle and bustle, it may be difficult to detect ringtones. The case-like mobile phone holder as in Patent Document 1 has a problem that the case itself is bulky, and the size of the mobile phone that can be stored is limited. Although the cellular phone holders of Patent Literature 2 and Patent Literature 3 are easy to attach and detach the cellular phone, the portion to be attached to clothing is a rigid frame member or clip, and is hard and thick, so the size of the waist and the movement of the body Depending on the type of clothing, it may feel like a foreign object or bulky, resulting in protrusions from the clothing, being caught on the arm or outerwear, being uncomfortable with a sense of unity with the clothing, and feeling like a foreign object attached to the clothing. I couldn't wipe it. For this reason, it is currently rarely used even for women for fashion reasons.

  Therefore, the present invention has been created in view of the above-described problems, and fits to clothes and can be worn without being bulky and without a sense of foreign matter, has no protrusions when worn, has a sense of unity with clothes, and looks good It can be used without resistance even by women, has few parts, does not require complicated assembly, can reduce manufacturing processes and costs, can be easily manufactured at low cost, and can be used for various types of folding mobile phones. It is an object of the present invention to provide a belt insertion type holder for a mobile phone that can detach / attach a foldable mobile phone instantly.

In order to solve the above problems, the gist of the present invention is the belt insertion type holder for a cellular phone according to the following (1), (2), (3) and (4).
(1) A belt-insertable holder for a mobile phone that is attached to a belt and detachably holds a foldable mobile phone, and both ends of a thin plate-like substrate body that can be interposed between folded housings of the foldable mobile phone A belt insertion type holder for a mobile phone, comprising: a belt insertion portion perforated so as to pass through the belt; and a foldable mobile phone is suspended and held on the substrate body.
(2) The belt-insertable holder for a mobile phone according to (1), wherein an upper side of the thin plate-like substrate body is recessed.
That is, it is a belt insertion type holder for a mobile phone that is attached to a belt and detachably holds a foldable mobile phone, and can be interposed between the folded housings of the foldable mobile phone and has a thin plate shape with a recessed upper side A belt insertion holder for a mobile phone, comprising: a belt insertion portion perforated so as to insert a belt at both ends of the substrate body; and a foldable mobile phone is suspended and held on the substrate body.
(3) The mobile phone according to (1) or (2), wherein the perforation of the belt insertion portion is a substantially U-shaped perforation having a size for allowing the belt to pass to form a tongue-like portion. Belt insertion type holder.
That is, a belt insertion holder for a mobile phone that is attached to a belt and detachably holds a foldable mobile phone, and is attached to both ends of a thin plate-like substrate body that can be interposed between folded housings of the foldable mobile phone. Preferably, it has a belt insertion part which is perforated so that the belt can be inserted into both ends of a thin plate-like substrate body whose upper side is recessed, and the perforation is a substantially U-shaped perforation having a size for passing the belt, and has a tongue-like shape A belt-insertable holder for a mobile phone, wherein a folding mobile phone is suspended and held on the substrate body.
(4) The belt insertion portion for a mobile phone according to (1), (2) or (3), wherein the perforations of the belt insertion portion are connected by connecting portions at both outer ends of the perforation. Mold holder.
That is, a belt insertion holder for a mobile phone that is attached to a belt and detachably holds a foldable mobile phone, and is attached to both ends of a thin plate-like substrate body that can be interposed between folded housings of the foldable mobile phone. Preferably having a belt insertion part perforated so that the belt is inserted through both ends of the thin plate-like substrate body having a concave upper side, and the perforation is preferably a substantially U-shaped perforation having a size for passing the belt, A tongue-shaped portion is formed, and the perforations are connected by connecting portions at both outer ends of the perforations, and a portable cellular phone is suspended and held on the substrate body. A belt insertion type holder for telephones.

  The belt-insertable holder for a mobile phone according to the present invention can hold the mobile phone very easily just by sandwiching and closing the substrate body with a foldable mobile phone, and the held mobile phone can be used instantly by pulling upward. . In addition, various types of foldable mobile phones can be held. Because it is a thin plate, it fits into clothing without feeling foreign objects and is comfortable to wear, does not become a protrusion from clothing, does not catch arms or outerwear on the holder, does not get in the way, and is not bulky , There is a sense of unity with clothing, it looks good, and it can be used without resistance by women without breaking the fashion. No complicated assembly is required, processes and costs required for manufacturing can be reduced, and various variations can be easily developed.

Hereinafter, the details of the present invention will be described with reference to the drawings. The foldable mobile phone to be held by the belt insertion type holder for the mobile phone of the present invention is a foldable structure in which a display unit housing K1 and an operation unit housing K2 are connected via a rotation axis K3 as shown in the drawing. Type mobile phone K.
(Embodiment 1)
FIG. 1 is a plan view of a belt-insertable holder for a mobile phone according to the first embodiment of the present invention, and FIGS. 2 and 3 are explanatory views showing a use state of the belt-insertable holder for the mobile phone. is there. As shown in FIGS. 1, 2, and 3, the belt insertion type holder 10 for a mobile phone according to the first embodiment of the present invention is attached to the belt and the mobile phone belt for detachably holding the foldable mobile phone. It is an insertion type holding tool, and is provided with a belt insertion part 12 through which a belt can be inserted at both ends of a thin plate-like substrate body 11.

  The substrate body 11 is a thin plate that is long in the horizontal direction and has a concave upper side. In the present embodiment, the base body 11 is formed in a bowl shape in which the center portion of the vertically symmetric shape is constricted, and is formed so that it can be used regardless of which is up. When the upper side of the substrate body 11 is formed to be recessed, the center of gravity of the mobile phone K is lowered when the mobile phone K is held down, and it is difficult to drop stably. Further, when the upper side is formed to be recessed in a substantially arc shape, Even if the model has a protrusion near the center of the rotation axis, the hanging part 11 can be hung without being caught by the protrusion.

  The substrate body 11 is suspended and secured between the folded housings of the folding mobile phone, and can be interposed between the folded display unit housing K1 and the operation unit housing K2 of the folding mobile phone K. It is thin enough to be inserted and removed. For example, the thickness is 1 mm or less, preferably 0.1 to 0.5 mm. In a foldable mobile phone, in order to prevent interference between the surface of the operation key and the display unit in a folded state, the above-described gap is generally provided between the casings.

  The substrate body 11 is a flexible material and may be a single or composite material such as synthetic resin, cloth, fiber, leather, paper, metal, rubber, silicon, etc. In view of the fact that the mobile phone is hard to damage the mobile phone, and the fitting feeling and the cost required for manufacturing are considered, for example, polyethylene terephthalate (PET) such as a telephone card or prepaid card, vinyl chloride A flexible synthetic resin such as polyethylene, polypropylene, and celluloid is preferable. In the case of a hard material such as metal, it is preferable that the surface of the mobile phone is covered with rubber, cloth, soft synthetic resin, or the like so as not to damage the surface of the mobile phone or subjected to raising treatment.

  The belt insertion portion 12 is a substantially U-shaped perforation having a size that allows the belt to be inserted, and forms a tongue-like portion 13. Here, the substantially U-shape is a shape in which the U-shape is horizontal as shown in the drawing, and the opening direction is outward. Accordingly, the tongues of the two tongues face inward. The belt insertion part 12 is not limited as long as the belt can be inserted into the substrate body 11 and may be perforated or cut in a circular shape, an elliptical shape, a rectangular shape, or the like, but when formed as in the present embodiment, the cellular phone holder 10 is attached to the belt B1. It is preferable that the tongue 13 is sandwiched between the belt B1 and the waist and is sandwiched between the belt B1 and the waist over a wide area, and the mobile phone holder 10 is difficult to move when the mobile phone is attached or detached. Further, a material having a large contact resistance such as rubber or silicon may be coated and adhered to the front side or the back side of the tongue-like portion 13 to prevent slipping.

  The belt insertion portions 12 are provided at intervals at which the mobile phone K can be suspended from the substrate body 11. In addition, since a load is applied to the belt insertion portion 12 when the cellular phone K is attached / detached, the belt insertion portion 12 may be reinforced with a reinforcing member such as metal, leather, or synthetic resin to prevent damage.

  The substrate body 11 of the present embodiment has a bowl shape but may be any shape as long as it can hold a mobile phone. In addition to geometric shapes such as ellipses and rectangles, animals and plants, or art, characters, illustrations, and characters It may be a shape or a pattern. If the left and right end portions are rounded as in the present embodiment, a sense of incongruity is not felt even when attached to a thin belt.

  As a manufacturing method of the belt insertion type holding device 10 for a mobile phone according to the present embodiment, in addition to injection molding and compression molding, it is manufactured by printing on a large sheet-like material and die-cutting. It is not necessary and can be easily and easily formed into various shapes, and the manufacturing process and cost can be greatly reduced. In addition, since the substrate body 11 is a thin flat plate, it is easy to print on the surface, it is easy to develop various variations, and a belt insertion type holder for mobile phones with a high color pattern and shape made by design is very inexpensive. Can be provided. The surface may be processed so that it can be printed by a home printer so that the user can print a favorite photograph or graphic.

  The mobile phone belt insertion type holder 10 of the present embodiment is a thin flat plate so that it can be put in an envelope and mailed, and the printing surface for putting a company name, name, advertisement, etc. can be taken widely, so that it is a promotional product, PR product, gift Ideal for the development of goods and memorabilia.

  Hereinafter, a method for attaching the belt insertion type holding device 10 for a mobile phone to a belt and a method for attaching and detaching the mobile phone will be described. As shown in FIGS. 2 and 3, the belt insertion portion of the belt insertion type holding device 10 for a mobile phone is shown. 12, the belt insertion holder 10 for mobile phone is attached to the belt B1 through the belt B1.

  The belt insertion type holder 10 for a mobile phone attached to the belt bends along the waist curve together with the belt B1, fits any waist size, and adapts to the waist movement when the body is moved. Even if it bends, it is very easy to wear and can be worn without being bulky or uncomfortable.

  Since the belt insertion type holder 10 for a mobile phone is a thin plate and does not become a thin projection from the body, it is almost integrated with clothing, does not get in the way, looks good, can be changed according to clothes, and is fashionable Also excellent.

  To mount the mobile phone K, the display unit housing K1 or the operation unit housing K2 is inserted into the space between the substrate body 11 and the belt B1, and the display unit housing K1 and the operation unit of the folding mobile phone K are inserted. When the substrate body 11 is folded in half so as to sandwich the substrate body 11 with the housing K2, the substrate body 11 is hooked on the rotation axis K3 of the mobile phone K, and the mobile phone K is suspended from the substrate body 11. When the cellular phone K is in a slightly opened state, the substrate body 11 is hooked by the operation unit casing K2 to create a space between the substrate body 11 and the belt, and when the cellular phone K is closed, it can be easily hung with one hand. Can hold.

  When the cellular phone K is used, if the cellular phone K is pulled upwards with the cellular phone K closed, the substrate body 11 that has suspended the cellular phone K slides between the display unit casing K1 and the operation unit casing K2 and is carried. The telephone K can be removed from the holder instantly and can be used.

  Since it hangs and stops using between the housings of the foldable mobile phone, it can be held regardless of various shapes and thicknesses of the mobile phone. In addition, since the mobile phone is hung and hung along the body in an exposed state, there is no protrusion more than the thickness of the mobile phone, it is not bulky, there is a light feeling, the display part on the back of the mobile phone can be seen, and the ring tone is also heard Easy to hear.

  When the cellular phone is not held, the substrate body 11 is pushed in so that it becomes almost integrated with the belt B1 and does not get in the way.

(Embodiment 2)
FIG. 4 is a perspective view of a belt insertion type holder for a mobile phone according to a second embodiment of the present invention. As shown in FIG. 4, the belt insertion holder 20 for a mobile phone according to the second embodiment of the present invention has both end portions outside the perforations of the belt insertion portion 12 of the belt insertion holder for a mobile phone of the first embodiment. Are connected by a strip-shaped connecting portion 21 shorter than the substrate body 11, and the substrate body 11 is bent.

  The substrate body 11 is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  The material of the connecting portion 21 may be the same as that of the substrate body 11, and the thickness is preferably thin because it is sandwiched between the belt and the waist. In the present embodiment, both tongue-like portions 13 of the substrate body 11 are connected by a belt-like connecting portion 21.

  With such a configuration, when the belt insertion type holder for a cellular phone is attached to the belt B1, the connecting portion 21 is sandwiched between the belt B1 and the waist portion even if the substrate body 11 is pulled. The substrate body 11 can maintain a certain bent state without being displaced so as to approach each other.

  In the present embodiment, the connecting portion 21 and the substrate body 11 are connected by adhesion, but other connecting means such as sewing and rivets may be used. A hook, button, or the like that can change the connecting position of the connecting portion 21 and the substrate body 11 so that the degree of bending of the substrate body 11 can be adjusted according to the size of the waist or the attachment position of the belt insertion type holding device 20 for mobile phones. You may connect by connection means, such as fitting of a male part and a female part.

  The method of attaching the belt insertion type holder 20 for a mobile phone of the present embodiment to the belt and the method of attaching / detaching the mobile phone are the same as those of the first embodiment.

(Embodiment 3)
FIG. 5 is a perspective view of a belt insertion type holder for a mobile phone according to a third embodiment of the present invention. As shown in FIG. 5, a belt insertion type holder 30 for a cellular phone according to a third embodiment of the present invention is a belt insertion type holder for a cellular phone that is attached to a belt and detachably holds a folding cellular phone. Thus, a belt insertion portion 32 through which a belt can be passed is provided at both ends of the ribbon-shaped substrate body 31.

  The belt insertion part 32 is provided with perforations of a size that allows the belt to be inserted into a plate-like body made of leather or the like, and both end portions outside the perforation of the belt insertion part 32 are connected by a belt-like connection part 33. In this embodiment, they are connected by stitching, but other fixing means such as rivets and adhesion may be used. The belt insertion part 32 only needs to be able to insert the belt, and may be a circular, elliptical, rectangular or the like perforated or cut.

  The substrate body 31 is a belt-like thin flat plate having perforations at both ends, and a snap button 34 that fits a female portion and a male portion is attached to the belt insertion portion 32, and the snap button 34 is perforated in the substrate body 31. The substrate body 31 is detachably connected to the belt insertion portion 32 in a bent state.

  When formed in this way, when the belt insertion holder 30 for a cellular phone is attached to the belt B1, the connecting portion 33 is sandwiched between the belt B1 and the waist portion even if the substrate body 31 is pulled. The substrate body 31 can maintain a certain bent state without being shifted so that the 32 approaches each other.

  The substrate body 31 is suspended and secured between the folded housings of the foldable mobile phone, and can be interposed between the folded display portion housing K1 and the operation portion housing K2 of the foldable mobile phone K. Thus, it is thin enough to be inserted and removed. For example, the thickness is 1 mm or less, preferably 0.1 to 0.5 mm. In a foldable mobile phone, in order to prevent interference between the surface of the operation key and the display unit in a folded state, the above-described gap is generally provided between the casings.

  The substrate body 31 is a flexible material, and may be a single or composite material such as synthetic resin, cloth, fiber, leather, paper, metal, rubber, silicon, etc. In view of the fact that the mobile phone is hard to damage the mobile phone, and the fitting feeling and the cost required for manufacturing are considered, for example, polyethylene terephthalate (PET) such as a telephone card or prepaid card, vinyl chloride A flexible synthetic resin such as polyethylene, polypropylene, and celluloid is preferable. In the case of a hard material such as metal, it is preferable that the surface of the mobile phone is covered with rubber, cloth, soft synthetic resin, or the like so as not to damage the surface of the mobile phone or subjected to raising treatment.

  The shape of the substrate body 31 of the present embodiment is a belt shape, but may be any shape that can hold a mobile phone. In addition to geometric shapes such as circles and polygons, animals and plants, or art, characters, illustrations, characters, etc. The shape or pattern may be used.

  As a manufacturing method of the substrate body 31 of this embodiment, it is extremely easy to manufacture by printing on a large sheet-like material and die-cutting in addition to injection molding and compression molding, so that no assembly process is required. Can be easily formed into various shapes, and the process and cost required for production can be greatly reduced. Further, since the substrate body 31 has a thin flat plate shape, printing on the surface is easy, development of various variations is easy, and the substrate body 31 having a high design and shape can be provided at a very low cost. The surface may be processed so that it can be printed by a home printer so that the user can print a favorite photograph or graphic.

  The substrate body 31 can be removed with a snap button 34 and can be replaced with the above-mentioned various ones. In addition, since the deflection of the substrate body 31 can be adjusted by changing the length of the substrate body 31, the space between the substrate body 31 and the connecting portion 33 is adjusted according to the size of the waist and the mounting location. it can.

  In this embodiment, the belt insertion part 32 and the substrate body 31 are connected by the snap button 34. However, any connection means such as a connection ring may be used as long as the belt insertion part 32 and the substrate body 31 can be connected. Or, it may be connected with a normal button, a hook-and-loop fastener, a chain, a string-like material, a belt-like material, a hook, a carabiner, a rivet, a rotating shaft or the like.

  In this embodiment, the belt insertion portion 32 is made of leather, but may be any material having strength to be attached to the belt, and may be a single or composite material such as synthetic resin, cloth, fiber, leather, paper, metal, rubber, and silicon. Material. Further, in this embodiment, the belt insertion part 32 and the connection part 33 are formed separately and stitched together. However, if the material is rubber, synthetic resin or the like, the belt insertion part 32 and the connection part 33 are integrally formed. You can also

  The method for attaching the mobile phone belt insertion type holder 30 to the belt and the method for attaching / detaching the mobile phone according to the present embodiment are the same as those of the first embodiment, and a description thereof will be omitted.

(Embodiment 4)
FIG. 6 is an explanatory view showing a usage state of a belt insertion type holder for a cellular phone according to a fourth embodiment of the present invention. As shown in FIG. 6, a belt insertion type holder 40 for a cellular phone according to a fourth embodiment of the present invention is such that a belt insertion part 42 through which a belt can be inserted is connected to both ends of a ribbon-like substrate body 41. is there.

  The belt insertion part 42 is provided with a perforation having a size that allows the belt to be inserted into a leather plate. The perforation may be a size and shape that allow the belt B1 to be inserted, and may be, for example, a circle, an ellipse, or a cut.

  The substrate body 41 is a strip-shaped thin plate having a length that allows the mobile phone K to be hung on the substrate body 41.

  The substrate body 41 is suspended and secured between the folded housings of the foldable mobile phone, and can be interposed between the folded display portion housing K1 and the operation portion housing K2 of the foldable mobile phone K. Thus, it is thin enough to be inserted and removed. For example, 1 mm or less, preferably 0.1 to 0.5 mm is exemplified as a more preferable thickness. In a foldable mobile phone, in order to prevent interference between the surface of the operation key and the display unit in a folded state, the above-described gap is generally provided between the casings.

  The substrate body 41 is a flexible material, and may be a single material or a composite material such as synthetic resin, cloth, fiber, leather, paper, metal, rubber, silicon, etc. In view of the fact that the mobile phone is hard to damage the mobile phone, and the fitting feeling and the cost required for manufacturing are considered, for example, polyethylene terephthalate (PET) such as a telephone card or prepaid card, vinyl chloride A flexible synthetic resin such as polyethylene, polypropylene, and celluloid is preferable. In the case of a hard material such as metal, it is preferable that the surface of the mobile phone is covered with rubber, cloth, soft synthetic resin, or the like so as not to damage the surface of the mobile phone or subjected to raising treatment.

  In the present embodiment, the belt insertion portion 42 is made of leather, but may have any strength as long as it has strength to hold the cellular phone when the belt is inserted and the cellular phone is held. Synthetic resin, cloth, fiber, leather It may be a single or composite material such as paper, metal, rubber, or silicon.

  The substrate body 41 of the present embodiment is rectangular but may be any shape that can hold a mobile phone. In addition to geometric shapes such as circles and polygons, animals and plants, art, characters, illustrations, characters, etc. The shape or pattern may be used.

  As a manufacturing method of the substrate body 41 of this embodiment, it is extremely easy to manufacture by printing on a large sheet-like material and die-cutting in addition to injection molding and compression molding, so that an assembly process is not required. Can be easily formed into various shapes, and the process and cost required for production can be greatly reduced. Further, since the substrate body 41 is a thin flat plate, it is easy to print on the surface, various variations can be easily developed, and the substrate body 41 having a highly designed color pattern and shape can be provided at a very low cost. The surface may be processed so that it can be printed by a home printer so that the user can print a favorite photograph or graphic.

  In the present embodiment, the belt insertion portion 42 and the substrate body 41 are connected by stitching. However, the substrate body 41 may be replaced by being connected by a detachable connecting means such as a snap button.

  The method of attaching the belt insertion type holder 40 for a mobile phone according to the present embodiment to the belt and the method of attaching / detaching the mobile phone are the same as those of the first embodiment, and the description thereof is omitted.

  Since the belt-insertable holder for a mobile phone of the present invention is a thin plate, it fits into clothes and is excellent in wearing feeling, has a sense of unity with clothes, looks good, and can be easily developed in various variations. It may be recognized as a new fashion as well as a phone holder.

  The mobile phone belt insertion type holder of the present invention is not limited to a foldable mobile phone, but can be folded in two or hangable, for example, a portable information terminal such as a small computer or PDA, CD, MD It can be applied and deployed as portable music players such as memory players, as well as stationery, tools, glasses, wallets, accessory cases, towels, small bags, etc.

The top view of the belt penetration type holder for cellular phones concerning a 1st embodiment. Explanatory drawing which shows the use condition of the belt insertion type holder for mobile telephones which concerns on 1st Embodiment. Explanatory drawing which shows the use condition of the belt insertion type holder for mobile telephones which concerns on 1st Embodiment. The perspective view of the belt penetration type holder for cellular phones concerning a 2nd embodiment. The perspective view of the belt penetration type holder for cellular phones concerning a 3rd embodiment. Explanatory drawing which shows the use condition of the belt insertion type holder for mobile telephones which concerns on 4th Embodiment.

Explanation of symbols

10, 20, 30, 40 Mobile phone belt insertion type holder 11, 31, 41 Substrate body 12, 32, 42 Belt insertion part 13 Tongue part 21, 33 Connection part 34 Snap button B1 Belt K Mobile phone K1 Display part Case K2 Operation unit case K3 Rotating shaft

Claims (4)

  A belt-insertable holder for a mobile phone that is attached to a belt and detachably holds a foldable mobile phone, and belts are attached to both ends of a thin plate-like substrate body that can be interposed between folded housings of the foldable mobile phone. A belt insertion type holding device for a mobile phone, comprising: a belt insertion portion perforated so as to be inserted; and a foldable mobile phone is suspended and held on the substrate body.   2. The belt insertion type holder for a mobile phone according to claim 1, wherein an upper side of the thin plate-like substrate body is recessed.   The belt insertion type holding for a cellular phone according to claim 1 or 2, wherein the perforation of the belt insertion part is a substantially U-shaped perforation having a size to allow the belt to pass and is formed with a tongue-like part. Ingredients.   The belt insertion type holder for a mobile phone according to claim 1, 2 or 3, wherein the perforations of the belt insertion portion are connected by connecting portions at both outer end portions of the perforation.