JP2010125771A - Holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holder that can fasten a plurality of target pieces side by side, that can increase strength of holding target pieces on a mounting part, and that can remove only desired pieces from the mounting part while the holder is prevented from falling off from the mounting part. <P>SOLUTION: The holder includes: an elastically deformable resin-made elastic base plate 10 having a base 11 and arms 12 that extend outward from the base 11; a first permanent magnet 20 fixed on the reverse side of the base 11 of the elastic base plate 10; second permanent magnets 21 fixed on the reverse side near the distal end of the arms 12 of the elastic base plate 10; and operating parts 13 that are formed integrally with the distal end of the arms 12 protruding outward from the second permanent magnets 21, in the front side from the reverse-side magnetic pole of the second permanent magnets 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fastening device that can be suitably used for fixing a piece of paper such as memo paper to a steel mounting portion such as a white board or a side wall of a refrigerator by a permanent magnet.

  A flexible sheet or film as a fastening device for fixing a piece of paper such as memo paper or a piece to be secured such as a thin sheet to a steel mounting part such as a whiteboard or refrigerator side wall A plurality of sheet-like magnets made of bonded magnets are arranged side by side with a gap between them, and a first magnet that is directly attracted to the mounting portion as the magnet and a to-be-attached piece are sandwiched between A second magnet that is indirectly attracted to the mounting portion is provided, and an operation portion is formed adjacent to the second magnet to peel off the second magnet at the end of the base material (for example, , See Patent Document 1).

JP 2003-205695 A

  In the fastening device described in Patent Document 1, since the operation portion is arranged in the mounting portion without a substantial gap, it is difficult to pick the operation portion with a finger, and the operation piece is removed to remove the fastening piece fixed with the fastening device. There is a problem that it takes time to work to remove the second magnet from the mounting portion by gripping the portion. In addition, it is necessary to pick up the operation part with the thumb and index finger of one hand and to peel off the second magnet from the mounting part while holding the to-be-attached piece with the other hand. Depending on the adjustment, the entire fastening device may fall off the mounting part. When multiple fastening pieces are fixed, the fastening part other than the fastening piece to be removed is also attached to the mounting part. There is a problem of falling off. Furthermore, since the magnet is fixed to the base material made of a flexible sheet or film, the attractive force of the first magnet with respect to the mounting portion hardly acts on the second magnet side due to the deformation of the base material. For this reason, it is necessary to fix the to-be-attached piece to the mounting portion only by the attractive force of the second magnet, and the to-be-attached piece cannot be further fixed by cooperation with the first magnet.

  An object of the present invention is to fix a plurality of to-be-attached pieces together, to improve the fastening strength of the to-be-attached pieces with respect to the attachment portion, and to prevent the fastening device from falling off the attachment portion. An object of the present invention is to provide a fastening device capable of removing only a necessary piece to be secured from the mounting portion.

  The fastening device according to the present invention includes an elastically deformable resin-made elastic substrate having a base portion and an arm portion extending outward from the base portion, and a first fixed to the back side of the base portion of the elastic substrate. A permanent magnet, a second permanent magnet fixed to the back surface near the outer end of the arm portion of the elastic substrate, and a front side of the magnetic pole on the back surface side of the second permanent magnet. And an operation part integrally formed at the outer end of the arm part protruding in the direction.

  In this fastening device, the first permanent magnet is magnetically attracted and fixed to a steel mounting portion such as a whiteboard or a refrigerator side wall, and the second permanent magnet is attached to a piece of paper such as a note paper, a film, or a thin piece. In this state, the attachment piece is magnetically adsorbed and fixed to the attachment portion in a state where the attachment piece such as the sheet is sandwiched, and the attachment piece is fixed to the attachment portion. Further, the second permanent magnet is moved away from the mounting portion while the arm portion is elastically deformed by the operation portion, and the to-be-attached piece is attached to the attaching portion or the to-be-attached piece is removed from the attaching portion. become.

  More specifically, since the first permanent magnet is directly and firmly adhered to the mounting portion in a state where the fixing piece is fixed to the mounting portion with the fixing tool, the second permanent magnet and the mounting portion. Even if a to-be-fixed piece is pinched | interposed between them, a fixing tool can be firmly fixed with respect to an attaching part. In addition, since a part of the large attractive force of the first permanent magnet that is in direct contact with the mounting portion is transmitted to the second permanent magnet side via the elastically deformable arm portion, the first permanent magnet and the second permanent magnet By the cooperation with the permanent magnet, the to-be-fixed piece can be firmly fixed to the mounting portion. Furthermore, when attaching / detaching the to-be-fixed piece, the second permanent magnet is separated from the attachment portion and the to-be-attached piece is attached / detached. However, the attachment device itself is attracted and fixed to the attachment portion by the first permanent magnet. Since it is maintained in the done state, it is prevented that the entire fastening device falls off from the attachment portion. In addition, since the operation unit is disposed on the front side of the magnetic pole on the back side of the second permanent magnet, that is, at a position separated from the mounting unit, and is provided continuously to the base unit via the elastically deformable arm unit, When the second permanent magnet is pulled away from the mounting portion, for example, the second permanent magnet is pulled away from the mounting portion with the other hand while holding the adherend piece with one hand. While pressing the base part with the thumb of the hand toward the attachment part, the arm part can be elastically deformed by hooking the index finger on the operation part, and the second permanent magnet can be pulled away from the attachment part. With the other hand, the fastening piece can be easily attached to and detached from the attachment portion by operating the fastening tool with the other hand.

  Here, it is also a preferred embodiment to use a magnet having a stronger magnetic attraction than the second permanent magnet as the first permanent magnet. In this case, the first permanent magnet can be more firmly fixed to the attachment portion, the attachment strength of the attachment piece to the attachment portion can be increased, and the attachment piece can be removed. Further, it is possible to more effectively prevent the fastening device from falling off from the attachment portion.

  It is also a preferred embodiment that the elastic substrate is formed in a substantially flat plate shape, and the both permanent magnets are provided in a protruding shape on the back surface side of the elastic substrate. If comprised in this way, a clearance gap will be formed between an operation part and an attachment part, and it will be easy to operate an operation part with a finger in the state which attached the fastening tool to the attachment surface, without complicating the structure of an elastic substrate. Therefore, it is preferable.

  It is also a preferred embodiment that a deformation promoting portion that promotes elastic deformation of the arm portion is formed in the middle portion or base portion of the arm portion. When attaching / detaching the to-be-fixed piece, it is attached / detached while elastically deforming the arm portion as described above. However, when the deformation promoting portion is formed as in the present invention, the operation for elastically deforming the arm portion is performed. It is preferable because the property can be improved. In particular, when the groove portion extending in the width direction of the arm portion is formed on the back surface side of the arm portion as the deformation promoting portion, the front surface of the arm portion is configured to be a wide flat surface, and the front surface of the arm portion is character, pattern, etc. This is preferable because it can be effectively used as a display surface for printing or engraving.

  As the elastic substrate, a single-letter-shaped elastic substrate having a base portion and one arm portion extending from the base portion to one side is used, or a pair of base portion and a pair extending from the base portion to both sides. Using a single-letter-shaped elastic substrate having an arm portion, or using a V-shaped elastic substrate having a base portion and a pair of arm portions extending at an angle from the base portion to both sides, A cross-shaped elastic substrate having a base portion and four arm portions extending in four directions from the base portion is used, or a single-letter-shaped base portion and both sides orthogonal to the base portion extend from both ends of the base portion. An H-shaped elastic substrate having four arm portions can be used. When forming a plurality of arm portions, the plurality of to-be-bonded pieces can be fixed together with the second permanent magnets fixed to the end portions of the plurality of arm portions. Can be removed individually.

  According to the fastening device according to the present invention, the first permanent magnet is directly and firmly adhered to the mounting portion in a state where the fastening piece is fixed to the mounting portion with the fastening device. Even if a to-be-attached piece is pinched | interposed between a permanent magnet and an attaching part, a fastening tool can be firmly fixed with respect to an attaching part. In addition, since a part of the large attractive force of the first permanent magnet that is in direct contact with the mounting portion is transmitted to the second permanent magnet side via the elastically deformable arm portion, the first permanent magnet and the second permanent magnet By the cooperation with the permanent magnet, the to-be-fixed piece can be firmly fixed to the mounting portion. Furthermore, when attaching / detaching the to-be-fixed piece, the second permanent magnet is separated from the attachment portion and the to-be-attached piece is attached / detached. However, the attachment device itself is attracted and fixed to the attachment portion by the first permanent magnet. Since it is maintained in the done state, it is prevented that the entire fastening device falls off from the attachment portion. In addition, since the operation unit is disposed on the front side of the magnetic pole on the back side of the second permanent magnet, that is, at a position separated from the mounting unit, and is provided continuously to the base unit via the elastically deformable arm unit, When the second permanent magnet is pulled away from the mounting portion, for example, the second permanent magnet is pulled away from the mounting portion with the other hand while holding the adherend piece with one hand. While pressing the base part with the thumb of the hand toward the attachment part, the index finger can be hooked on the operation part to elastically deform the arm part 12 and the second permanent magnet can be pulled away from the attachment part. With the piece held, the fastening piece can be easily attached to and detached from the attachment portion by operating the fastening tool with the other hand.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 4, the fastening device 1 includes an elastically deformable resin elastic substrate 10 having a base portion 11 and an arm portion 12 extending outward from the base portion 11, and an elastic substrate 10. The first permanent magnet 20 fixed to the back surface side of the base portion 11, the second permanent magnet 21 fixed to the back surface side near the outer end of the arm portion 12 of the elastic substrate 10, and the back surface side of the second permanent magnet 21 And an operation part 13 formed integrally with the outer end of the arm part 12 projecting outward from the second permanent magnet 21 on the front side of the magnetic pole. As shown in FIGS. 1 and 4, the fastening device 1 magnetically attracts and fixes the first permanent magnet 20 to a steel mounting portion W such as a whiteboard or a side wall of a refrigerator. The second permanent magnet 21 is magnetically attracted and fixed to the mounting portion W with a piece of paper such as memo paper or a piece to be secured P such as a film or a thin sheet sandwiched therebetween, and the piece to be secured P is attached to the mounting portion W. It will be fixed to. Further, when removing the to-be-fixed piece P from the attachment portion W, the second permanent magnet 21 is operated in the direction separating the attachment portion W from the attachment portion W while the arm portion 12 is elastically deformed by the operation portion 13. The to-be-fixed piece P is removed.

  The elastic substrate 10 can be made of any synthetic resin material having spring elasticity, such as polyethylene, polyester, polypropylene, and nylon. The base portion 11 of the elastic substrate 10 is integrally provided with four arm portions 12 extending in four directions. The base portion 11 and the four arm portions 12 are disposed in the same plane, and the elastic substrate 10 is viewed from the front. It is formed in a cross shape. The width and thickness of the arm portion 12 are set to arbitrary widths and thicknesses that allow the arm portion 12 to be elastically deformed with a finger of one hand. A first tube portion 14 for holding the first permanent magnet 20 is integrally formed on the back surface side of the base portion 11, and the first permanent magnet 20 exposes one magnetic pole to the outside to expose the first tube. Internally fixed to the portion 14. A second cylindrical portion 15 for holding the second permanent magnet 21 is integrally formed on the back side near the outer end of the arm portion 12, and the second permanent magnet 21 exposes one magnetic pole to the outside. It is made to fit in the 2nd cylinder part 15 by doing. In the present embodiment, the end surfaces of the cylindrical portions 14 and 15 on the back side and the one magnetic pole exposed to the outside of the permanent magnets 20 and 21 are arranged in substantially the same plane. It is also possible to fit inside the cylindrical portions 14 and 15 so that one of the magnetic poles protrudes outward from the end surfaces of the cylindrical portions 14 and 15. In addition, one of the magnetic poles of the second permanent magnet 21 protrudes outward from one of the magnetic poles of the first permanent magnet 20, and the permanent magnets 20 and 21 are brought into close contact with the attachment portion W to fix the fastening device 1. In this state, the first permanent magnet 20 may be attracted to the second permanent magnet 21 by the elastic deformation of the arm portion 12 so that the to-be-attached piece P can be firmly fixed to the attachment portion W. preferable.

  An operating portion 13 is formed on the outer end portion of the arm portion 12 outside the second cylindrical portion 15, and the operating portion 13 is disposed on the front side of the magnetic pole exposed to the outside of the second permanent magnet 21. In a state in which the wearing device 1 is attached to the attachment portion W, a certain gap is formed between the attachment portion W and the operation portion 13, the operation portion 13 is hooked with a finger, and the arm portion 12 is pulled away from the attachment portion W. It is configured so that it can be deformed. In the present embodiment, the arm portion 12 and the base portion 11 are arranged in the same plane as the operation portion 13, but the arm portion 12 and the base portion 11 are in a state in which the fastening device 1 is attached to the attachment portion W. Thus, it is also possible to arrange the mounting portion W so as to be substantially free of gaps, and only the operation portion 13 is separated from the mounting portion W.

  As the first permanent magnet 20 and the second permanent magnet 21, a permanent magnet made of any material such as an alnico magnet, a ferrite magnet, an iron / chromium / cobalt magnet, a manganese / aluminum / carbon magnet, a rare earth magnet, or a bonded magnet can be adopted. . Moreover, although the shape of both permanent magnets was formed in a cylindrical shape in this embodiment, it can be formed in a polygonal column shape such as a cube or a rectangular parallelepiped. Furthermore, as the 1st permanent magnet 20 and the 2nd permanent magnet 21, what consists of the same kind of material can also be employ | adopted, and what consists of a dissimilar material can also be employ | adopted.

  It is also preferable that the magnetic attractive force of the first permanent magnet 20 that is in direct contact with the attachment portion W is higher than that of the second permanent magnet 21 so that the fastener 1 does not fall off the attachment portion W. As a method for increasing the magnetic attraction force, a magnet having many lines of magnetic force per unit area can be used. However, in order to reduce the manufacturing cost as much as possible, the first permanent magnet 20 is larger than the second permanent magnet 21. It is preferable to set a large magnetic attraction force by adopting one. Further, it is possible to use both the permanent magnets 20 and 21 together with a yoke. For example, it is possible to fix the permanent magnets 20 and 21 in the yoke by using a cylindrical yoke with a bottom and bringing one magnetic pole of the permanent magnets 20 and 21 into close contact with the inner end face of the yoke.

  On the front surface of the elastic substrate 10, a display surface (not shown) on which characters, pictures, etc. are directly printed or stamped can be formed. However, a sheet or film on which characters or designs are printed can be affixed to the elastic substrate 10 to form a display surface, or characters or designs can be printed on a film that shrinks when heated to form a cylinder. It is also possible to provide a display surface on which characters and designs are formed by heat-shrinking the film in a state where the elastic substrate 10 is packaged on the elastic substrate 10 and integrally packaging the film on the elastic substrate 10. Characters and patterns to be printed or stamped can be arbitrarily set according to the purpose of use of the fastening device 1. For example, when used as a promotional product, a display surface on which a product advertisement is printed or stamped is provided. When used as a stationery for children, a display surface on which various animation characters or the like are printed or engraved can be provided.

  In this fastening device 1, the first permanent magnet 20 is magnetically attracted and fixed to a steel mounting portion W such as a whiteboard or a side wall of a refrigerator, and the second permanent magnet 21 is a piece of paper such as memo paper. In addition, the to-be-attached piece P is fixed to the attaching portion W by being magnetically attracted and fixed to the attaching portion W in a state where the to-be-attached piece P such as a film or a thin sheet is sandwiched. Further, when removing the to-be-fixed piece P from the attachment portion W, the second permanent magnet 21 is pulled away from the attachment portion W while operating the operation portion 13 to elastically deform the arm portion 12, and from the attachment portion W. The fastening piece P is removed.

  More specifically, the first permanent magnet 20 is directly and firmly adhered to the attachment portion W in a state where the attachment piece P is fixed to the attachment portion W with the fastener 1. Even if the to-be-fixed piece P is sandwiched between the permanent magnet 21 and the mounting portion W, the fixing tool 1 can be firmly fixed to the mounting portion W. In addition, a part of the large attractive force of the first permanent magnet 20 that is in direct contact with the mounting portion W is transmitted to the second permanent magnet 21 side via the elastically deformable arm portion 12, so that the first permanent By the cooperation of the magnet 20 and the second permanent magnet 21, the to-be-fixed piece P can be firmly fixed to the mounting portion W. Furthermore, when attaching / detaching the to-be-fixed piece P, the second permanent magnet 21 is separated from the attachment portion W and the to-be-attached piece P is attached / detached, but the attaching tool 1 itself is the first permanent magnet 20. Since the two second permanent magnets 21 of the arm portions 12 other than the arm portion 12 to be elastically deformed are maintained in the state of being attracted and fixed to the attachment portion W, the entire fastening device 1 is detached from the attachment portion W. Is prevented, and the plurality of to-be-fixed pieces P can be individually attached and detached. In addition, the operation unit 13 is arranged in front of the magnetic pole on the back side of the second permanent magnet 21, that is, at a position separated from the mounting unit W, and is connected to the base unit 11 via the elastically deformable arm unit 12. Therefore, when the second permanent magnet 21 is pulled away from the attachment portion W, for example, the second permanent magnet 21 is removed from the attachment portion W with the other hand while holding the to-be-attached piece P with one hand. At this time, the base part 11 is pressed against the attachment part side with the thumb of the other hand, the index finger is hooked on the operation part 13 to elastically deform the arm part 12, and the second permanent magnet 21 is attached to the attachment part W. Since the attachment piece P can be easily detached from the attachment portion W by operating the fastening device 1 with the other hand while holding the attachment piece P with one hand. can do.

Next, another embodiment in which the structure of the fastener 1 is partially changed will be described. In addition, the same code | symbol is attached | subjected to the same member as the said elastic board | substrate 10, and the detailed description is abbreviate | omitted.
(1) A single-letter-shaped elastic substrate 10A having a base portion 11A and one arm portion 12 extending from the base portion 11A to one side can be used as in the fastening device 1A shown in FIG. . When fixing the to-be-fixed piece P with this fixing tool 1A, the 1st permanent magnet 20 attached to the back surface side of the base part 11A is magnetically attracted and fixed to the attaching part W, and the to-be-attached piece P is fixed. The second permanent magnet 21 fixed on the back surface side of the outer end portion of the arm portion 12 is attracted and fixed to the attachment portion W. Also in this fastening device 1A, for example, while pressing the base portion 11A against the attachment portion W side with the thumb, the arm portion is attached so that the fastening finger 1A does not fall off the attachment portion W by hooking the index finger to the operation portion 13. The to-be-fixed piece P can be removed while elastically deforming 12.

(2) A single-letter-shaped elastic substrate 10B having a base portion 11B and one arm portion 12 extending from the base portion 11B to one side can be used as in the fastening device 1B shown in FIG. . When fixing the to-be-fixed piece P with this fixing tool 1B, the 1st permanent magnet 20 attached to the back surface side of the base part 11B is magnetically attracted and fixed to the attaching part W, and the to-be-attached piece P is attached. The second permanent magnet 21 fixed on the back surface side of the outer end portion of the arm portion 12 is sandwiched and fixed to the attachment portion W. Also, in this fastener 1B, for example, the arm portion is arranged so that the index finger is caught on the operation portion 13 while the base portion 11B is pressed against the attachment portion W side with the thumb, so that the fastener 1B does not fall off the attachment portion W. The to-be-fixed piece P can be removed while elastically deforming 12.

(3) A V-shaped elastic substrate 10C having a base portion 11C and a pair of arm portions 12 extending at an angle from the base portion 11C to both sides as in the fastening device 1C shown in FIG. Can be used. When the fastening piece P is fixed by the fastening tool 1C, the first permanent magnet 20 attached to the back side of the base portion 11C is magnetically attracted and fixed to the attachment portion W, and the fastening piece P is fixed. The second permanent magnet 21 fixed on the back surface side of the outer end portion of the arm portion 12 is sandwiched and fixed to the attachment portion W. Also, in this fastener 1C, for example, the arm portion is secured so that the index finger is caught on the operation portion 13 while the base portion 11C is pressed to the attachment portion W side with the thumb, so that the fastener 1C does not fall off the attachment portion W. The to-be-fixed piece P can be removed while elastically deforming 12.

(4) An H-shape having a single-letter-shaped base portion 11D and four arm portions 12 extending from both ends of the base portion 11D to both sides orthogonal to the base portion 11D, as in the fastening device 1D shown in FIG. A shaped elastic substrate 10D can be used. When fixing the to-be-fixed piece P with this fixing tool 1D, the 1st permanent magnet 20 attached to the back surface side of base part 11D is magnetically attracted and fixed to the attaching part W, and the to-be-attached piece P is attached. The second permanent magnet 21 fixed on the back surface side of the outer end portion of the arm portion 12 is sandwiched and fixed to the attachment portion W. Also in this fastener 1D, for example, the arm portion is arranged so that the index finger is caught on the operation portion 13 while the base portion 11D is pressed to the attachment portion W side with the thumb, so that the fastener 1D does not fall off the attachment portion W. The to-be-fixed piece P can be removed while elastically deforming 12.

(5) Like the arm portion 12E in the elastic substrate 10E of the fastening device 1E shown in FIG. 9, a deformation promoting portion 12Ea composed of a groove portion extending over the entire width is formed on the back side of the base portion of the arm portion 12E. It is also possible to form a deformation promoting portion 12Fa consisting of a narrow portion in the middle of the arm portion 12F in the length direction, like the arm portion 12F of the elastic substrate 10F of the fastening device 1F shown in FIG. In this case, since the elastic deformation of the arm portions 12E and 12F is promoted around the deformation promoting portions 12Ea and 12Fa, the operability when removing the to-be-attached pieces P can be improved. Further, in the elastic substrate 10E, since the front surface of the arm portion 12E is configured as a wide flat surface, the front surface of the arm portion 12E is effectively used as a display surface for printing or engraving characters or pictures. can do. As the deformation promoting portion 12Ea, a groove portion such as a U groove or a square groove can be formed in addition to the V-shaped groove portion as shown in FIG. Further, as the deformation promoting portion 12Fa, as shown in FIG. 10, the width of the arm portion 12F can be continuously narrowed, or can be narrowed stepwise. In addition, a slit extending from both sides in the width direction to the center side can be formed in the base portion of the arm portion 12F, and the narrow portion between both slits can be used as a deformation promoting portion. Further, as the deformation promoting portion, a corrugated portion including one or more wave portions is formed in the width direction in the base portion or midway portion of the arm portion, or one or more through holes are provided in the base portion or midway portion of the arm portion. It can also be used as a deformation promoting part by forming it in the middle of the direction. In addition, these deformation | transformation promotion parts can be similarly provided with respect to the arm part 12 of the said fastening tools 1A-1D.

Perspective view of the fastening device in use Perspective view from the back side of the fastening device Back view of fastening device IV-IV sectional view of FIG. The perspective view from the back surface side of the fastener of another structure The perspective view from the back surface side of the fastener of another structure The perspective view from the back surface side of the fastener of another structure The perspective view from the back surface side of the fastener of another structure The perspective view from the back surface side of the fastener of another structure The perspective view from the back surface side of the fastener of another structure

Explanation of symbols

P Attachment piece W Attachment part 1 Attachment 10 Elastic board 11 Base part 12 Arm part 13 Operation part 14 1st cylinder part 15 2nd cylinder part 20 1st permanent magnet 21 2nd permanent magnet 1A Attachment 10A Elasticity Substrate 11A Base part 1B Fastening tool 10B Elastic board 11B Base part 1C Fastening tool 10C Elastic board 11C Base part 1D Fastening tool 10D Elastic board 11D Base part 1E Fastening tool 10E Elastic board 12E Base part 12Ea Deformation promoting part 1F Dressing device 10F Elastic substrate 12F Base part 12Fa Deformation promotion part

Claims (10)

An elastically deformable resin-made elastic substrate having a base portion and an arm portion extending outward from the base portion;
A first permanent magnet fixed to the back side of the base portion of the elastic substrate;
A second permanent magnet fixed to the back side of the vicinity of the outer end of the arm portion of the elastic substrate;
An operation portion formed integrally with an outer end portion of an arm portion projecting outward from the second permanent magnet on the front side of the magnetic pole on the back surface side of the second permanent magnet;
A fastening device characterized by comprising:   The fastening device according to claim 1, wherein the first permanent magnet has a stronger magnetic attraction than the second permanent magnet.   The fastening device according to claim 1, wherein the elastic substrate is formed in a substantially flat plate shape, and the permanent magnets are provided on the back surface side of the elastic substrate so as to protrude.   The fastening device according to any one of claims 1 to 3, wherein a deformation promoting portion that promotes elastic deformation of the arm portion is formed in a middle portion or a base portion of the arm portion.   The fastening device according to claim 4, wherein a groove portion extending in a width direction of the arm portion is formed on the back surface side of the arm portion as the deformation promoting portion.   The fastening device according to any one of claims 1 to 5, wherein a single-character elastic substrate having a base portion and one arm portion extending from the base portion to one side is used as the elastic substrate.   The fastening device according to any one of claims 1 to 5, wherein a single-character elastic substrate having a base portion and a pair of arm portions extending from the base portion to both sides is used as the elastic substrate.   The V-shaped elastic substrate having a base portion and a pair of arm portions extending at an angle from the base portion to both sides is used as the elastic substrate. Fasteners.   The fastening device according to any one of claims 1 to 5, wherein a cross-shaped elastic substrate having a base portion and four arm portions extending in four directions from the base portion is used as the elastic substrate. 6. The elastic substrate according to claim 1, wherein the elastic substrate is an H-shaped elastic substrate having a single-letter-shaped base portion and four arm portions respectively extending from both end portions of the base portion to both sides orthogonal thereto. The fastening device according to claim 1.

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