JP2005003192A - Screw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to get the trace for handling record of attachment or removal certainly without diminishing the original versatility and convenience of a screw. <P>SOLUTION: The screw 10 is equipped with a shank part 11 that a screw thread 11a is cut on its outer circumference, a screw head 12 that is provided integrally to the end of this shank part 11, a sealing recessed part 12a that is provided in the center of the screw head 12, a hexagon hole 13 that is provided in the bottom of this sealing recessed part 12a for driving and rotating the shank 11, an ID tag 14 that is arranged into the sealing recessed part 12a when required, and a seal member 15 that is fixed irreversibly to the sealing recessed part 12a so as to cover the hexagon hole 13 and the ID tag 14 and constitutes the breakable wrapping skin and the inner sealing liquid of an ink etc. It enables to remove from an optional commodity 100 without leaving the trace of breakage of the seal member 15 that is fixed after screwing to the commodity 100. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a screw, and more particularly to a technique that is effective when applied to security applications that require management of attachment / detachment history of an object, identification management of an object to be attached / detached, and the like.

  There are a wide variety of uses for screws, such as assembly of mechanical and electronic components and cable fixing. By the way, originally, the advantage of the screw is the convenience of reversibly and easily reciprocating and disassembling the articles, but this original advantage may not be preferable depending on the application.

  For example, when an ordinary screw is used for the sealing structure of an article that is difficult to open without permission, no trace of an operation history such as opening remains, so that it is not guaranteed that the article has not been opened. For this reason, for example, it is known to use a screw that can be removed only by a specific tool, such as Patent Document 1 and Patent Document 2, or a screw that can be screwed only in a certain direction, such as Patent Document 3. It has been.

In response to the recent increase in environmental protection awareness, it is desirable to promote the recycling of electronic components and circuit boards, but there is room for improvement from the viewpoint of expediting disassembly work for articles fastened with screws. For example, a technique as disclosed in Patent Document 4 is known.
Japanese Utility Model Publication No. 56-20122 Japanese Utility Model Publication No. 59-66012 Japanese Utility Model Publication No. 58-184010 JP 2001-291977 A

The above-mentioned Patent Documents 1 to 3 have a technical problem that a certain effect can be obtained for preventing the unsealed opening of the sealing structure using a screw, but the trace of the opening cannot be known with the screw itself. .
Moreover, in the technique of patent document 1 and patent document 2, a special tool is required for fastening, and the technical problem that the versatility of a screw is impaired arises.

  Furthermore, in the technique of Patent Document 3, only the screwing operation in a specific direction can be performed and the removal work is difficult, and the screws of Patent Document 1 and Patent Document 2 require a special tool for the removal work. All of the techniques of Patent Document 1 to Patent Document 3 have a problem that disassembly work in recycling or the like becomes inconvenient.

  On the other hand, recently, ID tags each having a unique ID are used for individual management of articles. However, when an ID tag is attached to an article using a screw or the like, the above-described ID tag is used. Due to the convenience of such screws, there is also a problem that the correspondence between a specific ID tag and a specific article cannot be guaranteed, and individual articles cannot be identified accurately.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a screw capable of reliably grasping the trace of the operation history without impairing the general versatility and convenience of the screw.
Another object of the present invention is to provide a screw that guarantees the correspondence between an ID tag and an article and can reliably perform identification management of the article using the ID tag.

  In order to achieve the above object, a first aspect of the present invention is to provide a shaft portion in which a screw thread that is screwed into an object is formed, a screw head provided at one end of the shaft portion, and the screw head. And a sealing member that is irreversibly fixed to the screw head so as to conceal the operation part.

  According to a second aspect of the present invention, there is provided a shaft portion on which a screw thread to be screwed to an object is formed, a screw head provided at one end of the shaft portion, provided on the screw head, An operating part for rotationally driving the shaft part, an ID tag arranged in the operating part, and a sealing member fixed irreversibly to the screw head so as to conceal the operating part and the ID tag A provided screw is provided.

  According to a third aspect of the present invention, there is provided a shaft portion in which a screw thread that is screwed into an object is formed, a screw head portion provided at one end of the shaft portion, the screw head portion, There is provided a screw including an operation unit for rotationally driving a shaft part, and a sealing member which is irreversibly fixed to the screw head so as to conceal the operation part and includes an ID tag therein.

  According to a fourth aspect of the present invention, there is provided a shaft portion on which a screw thread to be screwed to an object is formed, a screw head portion provided at one end of the shaft portion, the screw head portion, There is provided a screw including an operation recess for rotationally driving a shaft portion and a sealing member fixed irreversibly to the screw head so as to conceal the operation recess.

  According to a fifth aspect of the present invention, there is provided a shaft portion formed with a screw thread to be screwed into an object, a screw head provided at one end of the shaft portion, provided in the screw head, An operation recess for rotationally driving the shaft portion, an ID tag disposed in the operation recess, and a sealing member fixed irreversibly to the screw head so as to conceal the operation recess and the ID tag A provided screw is provided.

  According to a sixth aspect of the present invention, there is provided a shaft portion in which a screw thread that is screwed to an object is formed, a screw head portion provided at one end of the shaft portion, the screw head portion, There is provided a screw including an operation recess for rotationally driving a shaft portion and a sealing member which is irreversibly fixed to the screw head so as to conceal the operation recess and includes an ID tag therein.

  According to a seventh aspect of the present invention, there is provided a shaft portion on which a screw thread to be screwed with an object is formed, a screw head provided at one end of the shaft portion, provided on the screw head, An operating portion for rotating the shaft portion, a screw seat member having a receiving recess through which the shaft portion is inserted and receiving the screw head, and the screw head in the receiving recess are concealed. Provided is a screw including a sealing member fixed irreversibly to the housing recess.

  According to an eighth aspect of the present invention, there is provided a shaft portion in which a screw thread that is screwed into an object is formed, a screw head portion provided at one end of the shaft portion, the screw head portion, An operation part for rotationally driving the shaft part, a screw seat member having a housing recess through which the shaft part is inserted and the screw head is housed, an ID tag arranged in the housing recess, and the housing recess There is provided a screw provided with a sealing member irreversibly fixed to the receiving recess so as to conceal the screw head and the ID tag.

  According to a ninth aspect of the present invention, there is provided a shaft portion in which a screw thread that is screwed into an object is formed, a screw head portion provided at one end of the shaft portion, the screw head portion, An operating portion for rotating the shaft portion, a screw seat member having a receiving recess through which the shaft portion is inserted and receiving the screw head, and the screw head in the receiving recess are concealed. Provided is a screw that is irreversibly fixed to the housing recess and includes a sealing member having an ID tag therein.

  According to the first and fourth aspects of the present invention described above, an arbitrary tool is engaged with the operation portion or the operation recess provided in the screw head and rotated to the shaft portion without fixing the sealing member. By applying force, the fastening operation can be performed simply as in the conventional case, and if the removal operation is performed by the sealing member fixed irreversibly after the fastening, the trace remains reliably, so the operation such as the removal operation can be performed. The history can be grasped reliably.

  Further, according to the second, third, fifth and sixth aspects of the present invention, the ID tag is attached to the screw by the irreversible sealing member, and the fastening history of the screw with respect to an arbitrary article is also determined by the sealing member. Since it is reliably grasped, in addition to surely grasping the operation history such as the removal operation, the correspondence relationship between the ID tag and the article is further guaranteed, and the identification management of the article by the ID tag can be surely performed. .

  Further, according to the seventh aspect of the present invention, the screw seat member is accommodated by setting the dimensions of the screw seat member according to the dimensions of the shaft portion and screw head of an arbitrary commercially available screw. With the sealing member that is irreversibly fixed to the recess, a fastening structure that can reliably grasp an operation history such as a removal operation can be realized by using an arbitrary commercially available screw.

  Further, according to the eighth and ninth aspects of the present invention, by attaching the ID tag to an arbitrary screw of an existing commercial product by using an irreversible sealing member, the fastening history of the screw with respect to an arbitrary article is also concerned. Since it is reliably grasped by the sealing member, in addition to surely grasping the operation history such as the removal operation, the correspondence relationship between the ID tag and the article is further guaranteed, and the identification management of the article by the ID tag is surely performed. Is possible.

According to the present invention, there is an effect that the trace of the operation history can be surely grasped without impairing the original versatility and convenience of the screw.
Further, according to the present invention, it is possible to ensure the correspondence between the ID tag and the article and to reliably perform the identification management of the article using the ID tag.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an example of the appearance of a screw according to an embodiment of the present invention, and FIG. 2 is a sectional view thereof.
The screw 10 according to the present embodiment includes a shaft portion 11 having a thread 11a engraved on the outer peripheral portion thereof, and a screw head 12 integrally provided at one end of the shaft portion 11.

  The screw head 12 has a substantially hemispherical shape with a smooth outer peripheral surface, and a cylindrical sealing recess 12 a is provided substantially coaxially with the shaft 11 at the center. Furthermore, as illustrated in FIG. 3, a hexagonal hole 13 is provided substantially coaxially with the shaft portion 11 at the bottom of the sealing recess 12 a. The hexagonal hole 13 is screwed into the article 100 with the shaft portion 11a formed with the screw thread 11a by fitting a fastening tool such as a hexagon wrench (not shown) through the sealing recess 12a and applying a rotational force to the shaft portion 11. Used for wearing and removing operations.

  An ID tag 14 is attached to the bottom of the sealing recess 12a of the screw head 12 with an adhesive or the like as necessary. The ID tag 14 has a function of responding to the outside with identification information unique to the ID tag 14 as a radio wave in response to an external radio wave, for example. The ID tag 14 may be configured to operate with the received external radio wave energy without having a power source, or may be configured to incorporate a power source such as a battery. The ID tag 14 may be omitted.

  Further, a sealing member 15 is irreversibly fixed to the sealing recess 12a using an adhesive or the like so as to conceal the entire opening of the sealing recess 12a. FIG. 3 shows the inside of the sealing recess 12a with the ID tag 14 and the sealing member 15 removed.

  As an example, as shown in FIG. 4, the sealing member 15 is composed of a foreskin 15 a made of a deformable thin resin or the like, and an inner sealing liquid 15 b such as ink sealed inside the foreskin 15 a. Is done. A substance that can be detected by the luminol reaction can be mixed in the inner sealing liquid 15b as necessary.

The strength of the sealing member 15 is set to a value that cannot be removed from the sealing recess 12a unless the envelope 15a is broken once it is fixed to the sealing recess 12a of the screw head 12.
Hereinafter, an example of the operation of the screw 10 of the present embodiment will be described.

  First, in a state where the sealing member 15 and the ID tag 14 are not attached, a tool such as a hexagon wrench (not shown) is fitted into the hexagonal hole 13 at the bottom of the sealing concave portion 12a of the screw head 12 and rotated, thereby 11 is screwed into a screw hole 100a of an arbitrary article 100 and attached.

  Next, the ID tag 14 is adhered to the bottom of the sealing recess 12a as necessary so as to cover the opening of the hexagonal hole 13, and further, the sealing tag recess and the entire sealing recess 12a are concealed. The sealing member 15 is fixed irreversibly inside 12a. In the example of FIGS. 1 and 2, the substantially spherical sealing member 15 is deformed so as to conform to the shape of the sealing recess 12a, and is irreversibly fixed to the bottom of the sealing recess 12a and the entire circumference of the inner peripheral portion of the outer end. Indicates the state.

  In addition, arbitrary marking, printing, etc. can be performed to the surface of the sealing member 15 exposed to the exterior of the sealing recessed part 12a so that visual recognition is possible.

  In this way, in order to remove the screw 10 screwed to the article 100 by irreversibly fixing the sealing member 15 to the sealing recess 12a and sealing it, the sealing member 15 is broken and a tool such as a hexagon wrench is used. There is no method other than fitting in the hole 13, but at this time, when the envelope 15 a of the sealing member 15 is broken and the inner sealing liquid 15 b is irreversibly scattered or there is an authentication mark on the surface of the sealing member 15 Since the authentication mark is also destroyed, an operation history such as removal of the screw 10 can be easily discriminated visually. Further, since the outer periphery of the screw head 12 is hemispheric and smooth, if the screw head 12 is rotated using a tool or the like without breaking the sealing member 15, the tool mark always remains and is removed. Is determined.

  For this reason, in the screw 10 of the present embodiment, once the screw 10 fastened to the target article 100 is removed, the trace always remains visible, and the operation history of the removal operation and the like is surely grasped. can do.

  That is, according to the screw 10 of the present embodiment, as described above, it can be simply screwed to an arbitrary article 100 using a tool such as a normal hexagon wrench, and once the screw 10 is screwed, the sealing member 15 By mounting, it is possible to reliably grasp an operation history such as a removal operation. In other words, it is possible to reliably grasp the trace of the operation history such as removal without impairing the original versatility and convenience of the screw.

  Further, in the screw 10 of the present embodiment, the ID tag 14 cannot be removed unless the sealing member 15 is broken, so that the one-to-one correspondence between the ID tag 14 and the screw 10 is reliably maintained. Further, the initial fastening (screwing) relationship between the screw 10 and the arbitrary article 100 is guaranteed by the sealing member 15 as described above. Therefore, the first correspondence between the article 100 to which the screw 10 is screwed and the ID tag 14 is also guaranteed one-to-one. As a result, unauthorized exchange of the ID tag 14 or the like becomes impossible, and the article 100 using the ID tag 14 can be managed accurately.

In the above description, the example in which the ID tag 14 is mounted separately from the sealing member 15 has been described. However, the ID tag 14 may be embedded and mounted inside the envelope 15a of the sealing member 15.
FIG. 5 is a perspective view showing an example of the appearance of a screw according to another embodiment of the present invention, and FIG. 6 is a sectional view thereof.

  The screw 20 of the present embodiment includes a shaft portion 21 having a screw thread 21a engraved on the outer peripheral portion, and a screw head portion 22 provided integrally with one end of the shaft portion 21.

  The screw head 22 has a substantially cylindrical shape with a smooth outer peripheral surface, and a cylindrical sealing recess 22 a is provided substantially coaxially with the shaft 21 at the center. Further, a hexagonal hole 23 is provided substantially coaxially with the shaft 21 at the bottom of the sealing recess 22a. The hexagonal hole 23 is screwed into the article 100 by attaching a fastening tool such as a hexagon wrench (not shown) to the shaft portion 21 by applying a rotational force to the shaft portion 21 through the sealing recess 22a. Used for wearing and removing operations.

  An ID tag 14 is attached to the bottom of the sealing recess 22a of the screw head 22 with an adhesive or the like as necessary. The ID tag 14 may be omitted.

  Furthermore, a sealing member 25 is irreversibly filled in the sealing recess 22a so as to conceal the entire opening of the sealing recess 22a. The sealing member 25 is made of, for example, gel, wax, resin, or the like, and an authentication pattern 25a made of arbitrary characters and figures is formed on the surface visible from the outside by a method such as engraving or printing.

Hereinafter, an example of the operation of the screw 20 of this embodiment illustrated in FIGS. 5 and 6 will be described.
First, in a state where the sealing member 25 and the ID tag 14 are not mounted, a tool such as a hexagon wrench (not shown) is fitted into the hexagonal hole 23 at the bottom of the sealing concave portion 22a of the screw head 22 and rotated, thereby 21 is screwed into a screw hole 100a of an arbitrary article 100 and attached.

  Next, the sealing recess 22a is adhered to the bottom of the sealing recess 22a as necessary so as to cover the opening of the hexagonal hole 23, and further the ID tag 14 and the sealing recess 22a are entirely hidden. The sealing member 25 is filled irreversibly in the interior of 22a. At this time, an authentication pattern 25a made of arbitrary characters and figures is formed on the surface of the sealing member 25 exposed to the outside of the sealing recess 22a so as to be visible by a method such as engraving or printing.

  In order to remove the screw 20 screwed to the article 100 by filling the sealing member 25 irreversibly into the sealing recess 22a in this way and removing it, the sealing member 25 or the authentication pattern 25a is destroyed by using a hexagon wrench or the like. Since there is no method other than fitting the tool in the hexagonal hole 23, an operation history such as removal of the screw 20 can be reliably discriminated in a visible manner. Further, since the outer periphery of the screw head 22 is cylindrical and smooth, if the screw head 22 is forced to rotate with a tool or the like without destroying the sealing member 25, the tool mark always remains and is removed. Is determined.

  For this reason, in the screw 20 of the present embodiment, once the screw 20 fastened to the target article 100 is removed, the trace always remains visible, and the operation history such as the removal operation is surely grasped. can do.

  That is, according to the screw 20 of the present embodiment, as described above, it can be simply screwed to an arbitrary article 100 using a tool such as a normal hex wrench, and once the screw is screwed, the sealing member 25 By filling, it is possible to reliably grasp an operation history such as a removal operation. In other words, it is possible to reliably grasp the trace of the operation history such as removal without impairing the original versatility and convenience of the screw.

  Further, in the screw 20 of the present embodiment, the ID tag 14 cannot be removed unless the sealing member 25 and the authentication pattern 25a are destroyed, so that the one-to-one correspondence between the ID tag 14 and the screw 20 is reliably maintained. The Further, the initial fastening (screwing) relationship between the screw 20 and the arbitrary article 100 is guaranteed by the sealing member 25 as described above. Therefore, the first correspondence between the article 100 to which the screw 20 is screwed and the ID tag 14 is also guaranteed one-to-one. As a result, unauthorized replacement of the ID tag 14 becomes impossible, and the article 100 using the ID tag 14 can be managed accurately.

FIG. 7 is a cross-sectional view showing an example of the configuration of a screw according to still another embodiment of the present invention.
The screw 30 according to the embodiment of FIG. 7 includes a screw body 31 made of, for example, a commercially available standard product, and a screw seat 32 having a through hole 32a through which the screw body 31 is inserted.

  The screw body 31 includes a shaft portion 31a in which a screw thread 31b is formed, and a screw head portion 31c provided integrally with one end of the shaft portion 31a. The screw head 31c is, for example, a so-called bolt head that exhibits a hexagonal column. The screw head 31c is fitted into a hexagon hole on the side of a tool (not shown) such as a box wrench to give a rotational force to the shaft portion 31a. The formed shaft portion 31a is used for an operation of screwing or removing the shaft portion 31a from the article 200.

  The screw seat 32 is provided with a sealing recess 32b for accommodating the screw head 31c. The inner diameter of the sealing recess 32b is set to a size such that a gap is formed between the outer periphery of the screw head 31c so that the tip of the tool fitted to the screw head 31c can be inserted. The depth of the sealing recess 32b is set to be larger than the height of the screw head 31c, and the screw head 31c is completely accommodated in the sealing recess 32b.

  A sealing member 33 is irreversibly fixed to the sealing recess 32b so as to completely conceal the screw head 31c located therein. Although not particularly shown, an authentication pattern can be formed on the exposed surface of the sealing member 33 by engraving or printing as necessary.

Further, the ID tag 14 is mounted between the screw head 31c and the sealing member 33 as necessary. This ID tag 14 may not be mounted.
Hereinafter, an example of the operation of the present embodiment will be described.

  First, in a state where the sealing member 33 and the ID tag 14 are not attached, the screw body 31 and the screw seat 32 in which the shaft portion 31a of the screw body 31 is inserted into the through hole 32a are screwed to the target article 200.

  At this time, the screw head 31 c of the screw body 31 is in a state of being accommodated in the sealing recess 32 b of the screw seat 32. Then, after the ID tag 14 is adhered and fixed to the screw head 31c in the sealing recess 32b as necessary, the sealing member 33 is filled irreversibly. If necessary, an authentication pattern is formed on the exposed surface by engraving or printing.

  Thus, in order to remove the screw body 31 and the ID tag 14 from the article 200, not only the sealing member 33 is destroyed, but also the destruction of the sealing member 33 can be visually determined. The same effect can be obtained.

  Furthermore, in the case of the embodiment of FIG. 7, since a commercially available general-purpose screw can be used as the screw body 31, in the fastening structure using an extremely wide variety of screws, the inherent versatility and convenience inherent to the screw. It is possible to reliably grasp the trace of the operation history such as removal without damaging the operation. Further, by mounting the ID tag 14 as necessary, the article 200 can be managed accurately.

  Although not particularly illustrated, the screw seat 32 is not necessarily used in the embodiment of FIG. 7 described above, and the screw head 32c is omitted and the screw head 31c of the screw body 31 exposed to the outside is used. The sealing member 33 may be fixed irreversibly so as to be completely hidden so that the screw head 31c cannot be rotated from the outside without destroying the sealing member 33. .

FIG. 8 is an exploded perspective view showing an example of the configuration of a screw according to still another embodiment of the present invention, and FIG. 9 is a sectional view of the assembled state.
The screw 40 in FIG. 8 includes a shaft portion 41 in which a screw thread 41 a is formed, and a cylindrical screw head 42 provided at one end of the shaft portion 41. The screw head 42 is provided with a hexagon hole 43 for rotating the shaft portion 41 with a tool such as a hexagon wrench. Further, the screw head 42 is provided with a pair of oval surfaces 44 formed by cutting off the cylindrical side surface of the screw head 42, and the cross section of the screw head 42 is an oval shape. Yes. The shaft portion 41 can be rotated by holding the oval surface 44 with a tool such as a spanner. In other words, the screw 40 can be screwed and fastened to and removed from the article 100 by either a hexagon wrench or a spanner.

  A cap 45 is provided on the top of the screw head 42. The cap 45 includes a pair of leg portions 46, which are sandwiched by the pair of leg portions 46 so as to conceal the oval surface 44, and a claw portion 46 a provided at the lower end of the leg portion 46 is screwed to the screw head. The cap 45 can be easily and stably mounted on the screw head 42 with a single touch without requiring a special tool or the like by being fitted to the periphery of the lower surface of the portion 42.

  Inside the cap 45, an enclosed space 45a in which the liquid material 16 is accommodated is provided penetrating in the axial direction. The liquid material 16 includes a foreskin 16a and an inner sealing liquid 16b enclosed therein. The inner sealing liquid 16b is made of, for example, ink mixed with a substance such as heme iron that can be identified by the luminol reaction.

  The liquid material 16 is mounted in the enclosed space 45 a while being sandwiched from above and below by the lower mask member 47 and the upper mask member 48. The lower mask member 47 and the upper mask member 48 are composed of an adhesive tape or the like with an adhesive applied on both sides.

  When the screw 40 of the present embodiment is screwed to the article 100, first, the shaft portion 41 is screwed into the target article 100 using a tool such as a hexagon wrench or a spanner without the cap 45 being attached. After that, the cap 45 is fixed by fitting the leg portion 46 so as to coincide with the position of the oval surface 44 of the screw head 42 and fitting the claw portion 46a to the lower surface of the screw head 42. To do.

  Next, after attaching the lower mask member 47 to the top of the screw head 42 exposed at the bottom of the enclosed space 45a, the liquid material 16 is loaded thereon, and the lower surface of the lower mask member 47 is The upper mask member 48 is pasted and covered on the upper end opening of the enclosed space 45 a and the upper surface of the liquid material 16. As a result, the screw 40 is in a sealed state as shown in FIG.

  In the sealed state of FIG. 9, for example, when a wrench is fitted to the oval surface 44 and the screw 40 is to be removed from the article 100, the cap 46 is removed to remove the leg portion 46 covering the oval surface 44. When 45 is removed from the screw head 42, the lower part of the liquid material 16 bonded to the lower mask member 47 is broken, and the encapsulated liquid 16b is scattered around.

  Further, when the wrench is fitted into the hexagonal hole 43 and the screw 40 is to be removed from the article 100, it is necessary to destroy the upper mask member 48, the liquid material 16, and the upper mask member 48. The encapsulated liquid 16b of the liquid 16 scatters around.

  That is, when the screw 40 is removed from the article 100 in the sealed state of FIG. 9, the screw 40 can be removed from the article 100 without scattering the inner sealing liquid 16b to the surroundings by using any of the wrench and spanner tools. It is impossible to loosen the screwed state.

  Since the encapsulated liquid 16b scattered around is mixed with a substance that can be detected by the luminol reaction as described above, the luminol liquid is applied to the periphery of the screw 40 to observe the presence or absence of light emission. This makes it possible to easily and reliably know whether or not the screw 40 has been removed. That is, it is possible to easily and reliably know the fact that the screw 40 is illegally removed or loosened by breaking the seal by the cap 45.

FIG. 10 is an exploded perspective view showing an example of the configuration of a screw according to still another embodiment of the present invention, and FIG. 11 is a sectional view of the assembled state.
This screw 50 is provided with a cap hole 54 in the axial direction in a cylindrical screw head 52 provided at one end of a shaft portion 51 in which a screw thread 51 a is formed, and a wrench is provided at the bottom of the cap hole 54. A hexagonal hole 53 that fits into a tool such as the like is provided.

  The cap 55 attached to the cap hole 54 is provided with an enclosed space 55a in which the liquid material 16 is accommodated in the axial direction. A plurality of fitting claws 56 project from the outer peripheral portion of the cap 55 so as to be elastically deformable in the radial direction, and are formed by penetrating through the wall surface of the cap hole 54 on the screw head 52 side. By fitting into the groove 54a, the cap 55 can be easily attached to the cap hole 54 with one touch without requiring a special tool or the like. Further, since the plurality of fitting claws 56 are fitted into the claw grooves 54a by the elastic force in the expanding direction, the cap 55 is reliably held in the cap hole 54 by a strong mounting force.

  The upper and lower open ends of the enclosing space 55a of the cap 55 in which the liquid material 16 is accommodated are closed by a lower mask member 57 and an upper mask member 58 each coated with an adhesive. It is mounted in the enclosed space 55a while being sandwiched from above and below by the mask member 57 and the upper mask member 58.

  Then, as illustrated in FIG. 11, when attaching the screw 50 of the present embodiment to the article 100, first, a tool such as a wrench is fitted into the hexagonal hole 53 without the cap 55 being attached. Then, the shaft portion 51 is rotated to be screwed to the article 100.

  Then, after attaching the lower mask member 57 so as to conceal the hexagonal hole 53 at the bottom of the cap hole 54, the cap 55 is inserted into the cap hole 54, and the fitting claw 56 is fitted into the claw groove 54a. Secure with. Then, the liquid material 16 is inserted into the enclosed space 55a of the cap 55 fixed in this manner, the lower surface is adhered to the upper surface of the lower mask member 57, and the upper surface is pasted and covered with the upper mask member 58. Thus, the sealed state of FIG. 11 is obtained.

  In the sealed state of FIG. 11, when the cap 55 is extracted from the cap hole 54 so as to expose the hexagonal hole 53 in an attempt to remove the screw head 52 from the article 100, the screw 55 is brought into close contact with and adhered to the lower mask member 57. The lower surface of the liquid material 16 is broken, and the encapsulated liquid 16b is scattered around. Further, if the upper mask member 58, the liquid material 16, and the lower mask member 57 are broken while the cap 55 is mounted in the cap hole 54 and the wrench is to be fitted into the hexagon hole 53, the inner sealing is similarly performed. The liquid 16b scatters around.

  That is, once the sealed state of FIG. 11 is reached, if the screw 50 is to be removed from the article 100, the encapsulated liquid 16b is always scattered around, and the encapsulated liquid 16b is luminol as described above. It can be easily detected by reaction. That is, it is possible to easily and surely know the fact that the seal by the cap 55 is broken and the screw 50 is illegally removed or loosened.

  Since the screw head 52 has a smooth cylindrical shape, when the outer periphery of the screw head 52 is clamped and rotated with a tool, a trace of the tool always remains on the outer periphery of the screw head 52. Also in this case, it goes without saying that the fact that the screw 50 is illegally removed or loosened can be surely known.

FIG. 12 is an exploded perspective view showing an example of the configuration of a screw according to still another embodiment of the present invention, and FIG. 13 is a sectional view of the assembled state.
In the screw 60 of this embodiment, a screw head 62 that is flat and has a substantially truncated cone shape is provided at one end of a shaft portion 61 on which a screw thread 61 a is formed, and a wrench is provided at the center of the screw head 62. A hexagonal hole 63 for fitting a tool such as the above is provided. A cap seat 64 having a concave cross section is provided at the top of the screw head 62. A plurality of claw holes 64 a are opened at a position surrounding the central hexagonal hole 63 in the cap seat 64.

  The cap 65 has a truncated cone shape, and a sealing space 65a for accommodating the liquid material 16 is provided on the upper surface of the center. The enclosed space 65 a is sealed with a mask member 67 in a state where the liquid material 16 is accommodated. A plurality of fitting legs 66 project from the bottom of the cap 65, and a fitting claw 66a is provided at each tip. Then, the fitting leg 66 is inserted into the claw hole 64a of the cap seat 64, and the fitting claw 66a is fitted to the lower opening edge of the claw hole 64a, so that a special tool or the like is not required. The cap 65 is simply fixed to the cap seat 64 with one touch.

  Then, as illustrated in FIG. 13, when attaching the screw 60 to the article 100, first, a tool such as a wrench is fitted into the hexagonal hole 63 of the screw head 62 without attaching the cap 65. The screw 60 is screwed to the article 100 by rotating the part 61. Thereafter, the fitting leg 66 of the cap 65 is inserted and fitted into the claw hole 64a of the cap seat 64, so that the cap 65 is fixed to the screw head 62, and the liquid material 16 is placed in the enclosed space 65a. The mask member 67 is attached and sealed.

  As a result, the screw 60 is in a sealed state. In the sealed state of FIG. 13, the fitting leg 66 of the cap 65 is completely concealed from the outside, and it is difficult to remove the cap 65 that conceals the hexagonal hole 63, and forcibly removing it. The cap 65 and the liquid material 16 can only be destroyed, and the inner sealing liquid 16b is scattered around. The scattered encapsulated liquid 16b can be easily detected using the luminol reaction, which makes it difficult to illegally remove the screw 60 from the article 100.

  Any of the screw 10, screw 20, screw 30, screw 40, screw 50, and screw 60 of each of the embodiments described above can be easily removed (disassembled) with the original simplicity of the screw if the sealing member is destroyed. In addition, there is an advantage that recycling is possible without destroying the article itself like a conventional one-way screw.

  Examples of the article 100 and the article 200 in each of the above-described embodiments include, for example, a seal for preventing falsification of electronic equipment in various gaming machines that require certification of a public institution for the configuration and function of the internal electronic equipment. Stopping structure, its connecting cable fixing device, license plate fixing structure, etc., any other items that need to be able to prevent self-replacement or falsification, or to know the history of attachment and detachment in the distribution channel, The present invention can be widely applied to ID tag fastening applications.

The perspective view which shows an example of the external appearance of the screw which is one embodiment of this invention. Sectional drawing of the screw which is one embodiment of this invention. The top view of the screw which is one embodiment of the present invention. Sectional drawing which shows an example of the sealing member which comprises the screw which is one embodiment of this invention. The perspective view which shows an example of the external appearance of the screw which is other embodiment of this invention. Sectional drawing of the screw which is other embodiment of this invention. Sectional drawing which shows an example of a structure of the screw which is further another embodiment of this invention. The disassembled perspective view which shows an example of the structure of the screw which is further another embodiment of this invention. Sectional drawing of the assembly state of FIG. The disassembled perspective view which shows an example of the structure of the screw which is further another embodiment of this invention. Sectional drawing of the assembly state of FIG. The disassembled perspective view which shows an example of the structure of the screw which is further another embodiment of this invention. It is sectional drawing of the assembly state of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Screw, 11 ... Shaft part, 11a ... Screw thread, 12 ... Screw head, 12a ... Sealing recessed part, 13 ... Hexagon socket (operation recessed part: Operation part), 14 ... ID tag, 15 ... Sealing member, 15a ... Foreskin 15b ... Inner liquid, 16 ... Liquid material, 16a ... Foreskin, 16b ... Inner liquid, 20 ... Screw, 21 ... Shaft, 21a ... Screw thread, 22 ... Screw head, 22a ... Sealing recess, 23 ... Hexagon Hole (operation recess: operation part), 25 ... sealing member, 25a ... authentication pattern, 30 ... screw, 31 ... screw body, 31a ... shaft, 31b ... screw thread, 31c ... screw head (operation part), 32 ... Screw seat, 32a ... through hole, 32b ... sealing recess (accommodating recess), 33 ... sealing member, 40 ... screw, 41 ... shaft, 41a ... screw thread, 42 ... screw head, 43 ... hex socket, 44 ... oval 45, cap, 45a, enclosed space, 46, legs, 46a, claw, 4 ... Lower mask member, 48 ... Upper mask member, 50 ... Screw, 51 ... Shaft, 51a ... Screw thread, 52 ... Screw head, 53 ... Hexagonal hole, 54 ... Cap hole, 54a ... Claw groove, 55 ... Cap 55a ... enclosed space, 56 ... fitting claw, 57 ... lower mask member, 58 ... upper mask member, 60 ... screw, 61 ... shaft, 61a ... screw thread, 62 ... screw head, 63 ... hexagonal hole, 64 ... Cap seat, 64a ... Claw hole, 65 ... Cap, 65a ... Enclosed space, 66 ... Fitting leg, 66a ... Fitting claw, 67 ... Mask member, 100 ... Article, 200 ... Article

Claims (19)

  A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. And a sealing member irreversibly fixed to the screw head so as to conceal the operation part.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. And a sealing member fixed irreversibly to the screw head so as to conceal the operation unit and the ID tag.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. And a sealing member that is irreversibly fixed to the screw head so as to conceal the operation unit and includes an ID tag therein.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw comprising: a recess; and a sealing member fixed irreversibly to the screw head so as to conceal the operation recess.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw comprising: a recess; an ID tag disposed in the operation recess; and a sealing member fixed irreversibly to the screw head so as to conceal the operation recess and the ID tag.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw comprising: a concave portion; and a sealing member which is irreversibly fixed to the screw head so as to conceal the operation concave portion and includes an ID tag therein.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw seat member having an accommodating recess in which the shaft portion is inserted and the screw head is accommodated, and irreversibly fixed to the accommodating recess so as to conceal the screw head in the accommodating recess. And a sealing member.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw seat member having an accommodating recess in which the shaft portion is inserted and the screw head is accommodated, an ID tag disposed in the accommodating recess, the screw head in the accommodating recess, and the ID A screw comprising: a sealing member fixed irreversibly to the receiving recess so as to conceal the tag.   A shaft portion formed with a screw thread to be screwed onto an object, a screw head portion provided at one end of the shaft portion, and an operation provided on the screw head portion for rotationally driving the shaft portion from the outside. A screw seat member having an accommodating recess in which the shaft portion is inserted and the screw head is accommodated, and irreversibly fixed to the accommodating recess so as to conceal the screw head in the accommodating recess. And a sealing member having an ID tag therein.   The screw according to any one of claims 1 to 9, wherein the sealing member is gel, resin, or wax.   The screw according to any one of claims 1 to 9, wherein the sealing member includes a liquid material and a foreskin that encapsulates the liquid material.   The screw according to any one of claims 1 to 11, wherein the sealing member is provided with a visible marking or marking.   The screw according to any one of claims 1 to 3, wherein the operation unit is a polygonal bolt head.   The screw according to any one of claims 4 to 6, wherein the operation recess is a polygonal hole or groove that fits into a screw turning tool.   The said sealing member was equipped with the cap with which the said screw head is mounted | worn, and the liquid substance enclosed in the said cap, The any one of Claims 1-9 characterized by the above-mentioned. Screw. A polygonal hole into which a screw turning tool is fitted as the operation recess is formed at the top of the screw head, and a pair of flat surfaces sandwiched by the screw turning tool as the operation portion is formed on the side surface of the screw head. Formed,
The cap includes an enclosure space that encloses the liquid material, and a body portion that conceals the polygonal hole, and a leg portion that protrudes from the body portion and sandwiches the screw head so as to cover the flat surface. The screw according to claim 15, further comprising: The screw head is formed in a cap hole in which the cap is accommodated, a polygonal hole formed in the bottom portion of the cap hole as the operation recess and into which a screw turning tool is fitted, and a side surface portion of the cap hole. A holding groove that fits into the cap,
The cap includes an enclosure space in which the liquid material is enclosed, and a body portion that conceals the polygonal hole, and a fitting claw that protrudes from a side surface portion of the body portion and fits into the holding groove. The screw according to claim 15, further comprising: a screw. The top of the screw head includes a polygonal hole into which a screw turning tool is fitted as the operation part, and a fitting hole into which the cap is fitted,
The cap includes a main body portion that includes an enclosed space in which the liquid material is enclosed, and conceals the polygonal hole; and a fitting leg that protrudes from the main body portion and fits into the fitting hole. The screw according to claim 15.   The screw according to any one of claims 15 to 18, wherein the liquid material includes a substance that can be identified by a luminol reaction.

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