JP2012132553A - Antitheft screw, antitheft nut and dedicated fastening fixture as well as antitheft screw set and antitheft nut set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow fastening to be performed easily as well while pressing in a shaft center direction.SOLUTION: In an antitheft screw 1 in which a head 3 is provided at one end of a shaft part 2 formed with a male thread 2a and three locking parts 31 are formed on the head 3 at circumferential intervals, the head 3 is formed in a hemispherical shape having a curvature radius gradually decreased toward the vertex, and each locking part 31 is formed by an arched vertical surface 31v as a first surface when viewed from the side and an arched horizontal surface 31h as a second surface when viewed from the above, and the vertical surface 31v of each locking part 31 is formed correspondingly to a part of each side of an equilateral triangle when viewed from the above. Further, at one end of the locking part 31, a projection 32 is provided. Accordingly, only a fixture having a recess for avoiding the projection 32 can be fitted to the locking part 31.

Description

  This invention includes car navigation, license plates, car components such as car components, surface grids installed in openings such as windows, various installations installed indoors and outdoors such as vending machines and public toilet seats, etc. This invention relates to an anti-theft screw, an anti-theft nut and its exclusive fastening jig, an anti-theft screw set and an anti-theft nut set.

  In recent years, theft and mischief of car parts such as car navigation, license plates and car components, various installations installed indoors and outdoors such as face grids and vending machines have frequently occurred.

  In order to prevent such theft, for example, an anti-theft screw that cannot be removed without using a special tool, such as a screw or nut head such as a bolt or screw for mounting automobile parts or various installations, etc. Nuts have been developed and are already on the market.

  For example, as shown in Patent Document 1, the outer peripheral surface of a head such as a screw or the outer peripheral surface of a nut is formed on a hemispherical surface or a truncated cone surface so that it cannot be gripped by a general tool such as a wrench or spanner. In addition, an appropriate number of concave portions recessed inward are formed on the outer peripheral surfaces thereof. Then, the anti-theft screw and nut are tightened and removed by pressing and rotating the concave portion in the circumferential direction with a dedicated tool that can be fitted into the concave portion.

  In addition, as shown in Non-Patent Document 1, a special-shaped fitting recess that does not fit in general tools such as +,-, and hexagonal holes is provided at the center of the top surface (the surface excluding the side surface) of the head. It has also been proposed to form. And the anti-theft screw is tightened and removed by rotating the head in the circumferential direction while pressing the head with a special tool equipped with a tip that can be fitted into a specially shaped fitting recess. is there.

JP 2000-46027 A

Search for YAHOO JAPAN (June 26, 2009), Tsuruga Co., Ltd. “Car Navigation Theft Prevention Screw” homepage (http://www.tsurugacorp.co.jp/isp.html)

  However, with any type of anti-theft screw, when the product is supplied to the market, the number of dedicated tools corresponding to the supply amount increases, so that the object to be fastened is fastened by the anti-theft screw. Even so, it is inevitable that the opportunity to release the anti-theft screw with another person's dedicated tool will increase.

  The present invention has been made in view of such problems, and it is possible to minimize the possibility that the fastening is released by a dedicated fastening jig of another person other than the corresponding dedicated fastening jig. An anti-theft screw, an anti-theft nut and its exclusive fastening jig, an anti-theft screw set, and an anti-theft nut set are provided.

  The anti-theft screw of the present invention is an anti-theft screw having a male screw or a female screw, and having a rotation operation part in which a plurality of locking parts for rotating the male screw or the female screw are formed. The rotating operation portion has a protruding portion whose diameter gradually decreases from the bottom surface to the top surface, and the locking portion intersects the first surface formed on the circumferential surface of the rotation operation portion and the first surface. The first surface of the other locking portion is not parallel to the first surface of one locking portion when viewed from above. It is formed in this.

  According to the present invention, even if the anti-theft screw is to be rotated using a general tool such as a wrench, there is no parallel surface between the first surfaces of the locking portion, and the anti-theft screw is utilized using the general tool. It cannot be rotated. Moreover, since it is extremely difficult to sandwich the rotation operation unit with a general tool, the rotation operation unit of the antitheft screw cannot be gripped and rotated using the general tool.

  In addition, the 1st surface of the said latching | locking part means the surface which a special fastening jig latches and can transmit rotational torque to an antitheft screw.

  The anti-theft screw of the present invention includes an anti-theft screw having a male screw or a female screw, and a rotation operation unit in which one locking part for rotating the male screw or the female screw is formed. The protrusion has a ridge that gradually decreases in diameter from the bottom surface of the rotation operation portion toward the top surface, and the head shape is formed in a circle when viewed from above, and the locking portion is formed on the peripheral surface of the rotation operation portion. It consists of a notch part provided with the formed 1st surface and the 2nd surface provided in the direction which cross | intersects this 1st surface.

  In the anti-theft screw of the present invention, the angle between the first surface and the second surface is preferably set to 45 ° to 160 °.

  The anti-theft screw of the present invention is an anti-theft screw having a male screw or a female screw, and having a rotation operation part in which a plurality of locking parts for rotating the male screw or the female screw are formed. A protrusion having a diameter gradually decreasing from the bottom surface of the rotation operation portion toward the top surface, and the locking portions are formed on a peripheral surface of the rotation operation portion and approach each other from the bottom surface of the rotation operation portion toward the top surface. The surface of the other locking part is formed so as not to be parallel to the surface of the one locking part as viewed from above.

  According to the present invention, even if the antitheft screw is to be rotated using a general tool such as a wrench, there is no parallel surface between the surfaces of the locking portion, and the antitheft screw is rotated using the general tool. It can't be done. In addition, since the locking portion is formed on the peripheral surface of the rotation operation portion and is formed of inclined surfaces that approach each other from the bottom surface of the rotation operation portion toward the top surface, it is extremely difficult to sandwich the rotation operation portion with a general tool. Since this is difficult, it is impossible to grip and rotate the rotation operation portion of the antitheft screw using a general tool.

  The anti-theft screw of the present invention is provided with a head at one end of a shaft portion on which a male screw is formed, and an anti-theft in which an odd number of three or more locking portions are formed on the head at intervals in the circumferential direction. In the screw, the head is formed in a substantially hemispherical shape, a truncated cone shape, and a conical shape in which the radius of curvature gradually decreases toward the apex or the top surface, and each locking portion is formed as a first surface when viewed from the side. Each of the regular polygons, each of which is formed by an arcuate vertical surface and an arcuate horizontal surface as the second surface when viewed from above, and the vertical surface of each locking portion when viewed from above has the odd number of vertices. It is formed corresponding to three sides of a side or a part thereof or at least any one side and two sides opposite to the one side or a part thereof, and at one end of at least one locking part, A protrusion that prevents seating of the entire surface in the width direction is provided on the horizontal surface of the locking portion. It is characterized in that is.

  According to the present invention, even if an anti-theft screw is to be rotated using a general tool such as a wrench, each side of a regular polygon having three or more odd vertices or a part thereof or at least one arbitrary side There is no parallel plane in the vertical plane of the locking portion formed corresponding to the three sides of the two sides facing the one side or a part thereof, and the anti-theft screw is rotated using a general tool. It will not be possible. In addition, since it is extremely difficult to sandwich a substantially hemispherical head with a general tool, the head of the antitheft screw cannot be gripped and rotated using the general tool.

  In addition, since the protrusion is provided on the locking portion, a jig other than the dedicated fastening jig corresponding to the antitheft screw can not be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft screw, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft screw, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protrusion, and effective rotation torque is applied to the vertical surface of the locking portion of the anti-theft screw It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft screw using a general tool, and the to-be-fastened object fastened using the anti-theft screw can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  The anti-theft screw of the present invention is provided with a head at one end of a shaft portion on which a male screw is formed, and an anti-theft in which an odd number of three or more locking portions are formed on the head at intervals in the circumferential direction. In the screw, the head is formed in a substantially hemispherical shape, a truncated cone shape, and a conical shape in which the radius of curvature gradually decreases toward the apex or the top surface, and each locking portion is formed as a first surface when viewed from the side. The vertical surface of each arch and the horizontal surface of the arch shape as the second surface as viewed from above, and the vertical surface of each locking portion as viewed from above approximate the regular polygon having the odd number of vertices. In addition, each side of a polygon whose two opposite sides are non-parallel or a part thereof, or at least one arbitrary side thereof, and three sides of two sides opposite to the one side or a part thereof are formed. Furthermore, at one end of at least one locking part, on the horizontal surface of the locking part It is characterized in that the protrusions for preventing the seating plane across the direction entirely is provided.

  According to the present invention, even if an anti-theft screw is to be rotated using a general tool such as a wrench, it approximates a regular polygon having an odd number of vertices of 3 or more and the two opposite sides are not parallel. There is a parallel plane on each side of a polygon or a part thereof, or at least one arbitrary side and three sides of two sides opposite to the one side, or a vertical surface of a locking portion formed corresponding to a part thereof. Therefore, the anti-theft screw cannot be rotated using a general tool. In addition, since it is extremely difficult to sandwich a substantially hemispherical head with a general tool, the head of the antitheft screw cannot be gripped and rotated using the general tool.

  In addition, since the protrusion is provided on the locking portion, a jig other than the dedicated fastening jig corresponding to the antitheft screw can not be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft screw, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft screw, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protrusion, and effective rotation torque is applied to the vertical surface of the locking portion of the anti-theft screw. It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft screw using a general tool, and the to-be-fastened object fastened using the anti-theft screw can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  In this case, the polygon approximated to the regular polygon is obtained by slightly rotating at least one side of each side of the regular polygon in the clockwise direction or the counterclockwise direction around the substantially middle portion in the length direction. Polygons can be mentioned. However, when the selected one side is rotated, if it becomes parallel to the opposite side, the possibility of using a general tool increases, so the rotation angle that maintains a non-parallel relationship with the opposite side is Required.

  In this way, the polygon that approximates the regular polygon has a greater degree of freedom of each side than the regular polygon, and the vertical surface of the locking portion is formed corresponding to each side or part thereof. Since many formation patterns can be set, it is possible to obtain many patterns by combining the formation pattern of the vertical surface of the locking part and the formation pattern of the protrusion, and the fastening is released by another person's dedicated fastening jig. The risk of this can be further reduced.

  In the present invention, when viewed from the side, the height from the bottom surface of the horizontal surface of one locking portion of the plurality of locking portions is the bottom surface of the horizontal surface of the other two or more locking portions. Preferably, the height is higher or lower than Thereby, the formation pattern of the horizontal surface of the locking portion can be changed, and many patterns can be combined by combining the formation pattern of the protruding portion, or by combining the formation pattern of the vertical surface of the locking portion and the forming pattern of the protruding portion. Can be obtained, and the risk that the fastening is released by another person's dedicated fastening jig can be further reduced.

  In the present invention, it is preferable that the heights of the plurality of locking portions from the bottom surface of the head surface are different from each other when viewed from the side. Thereby, the formation pattern of the horizontal surface of the locking portion can be changed, and many patterns can be combined by combining the formation pattern of the protruding portion, or by combining the formation pattern of the vertical surface of the locking portion and the forming pattern of the protruding portion. Can be obtained, and the risk that the fastening is released by another person's dedicated fastening jig can be further reduced.

  The anti-theft screw of the present invention is the anti-theft screw in which a head is provided at one end of a shaft portion on which a male screw is formed, and three locking portions are formed on the head at intervals in the circumferential direction. The head is formed in a hemispherical shape, a truncated cone shape, and a conical shape in which the radius of curvature gradually decreases toward the apex or the top surface, and each locking portion has an arcuate vertical shape as a first surface when viewed from the side. And a vertical surface of each locking portion as viewed from above is formed corresponding to each side of the equilateral triangle or a part thereof. In addition, a protrusion that prevents seating of the plane over the entire width direction is provided on the horizontal surface of the locking portion at one end of the at least one locking portion.

  According to the present invention, even if the anti-theft screw is to be rotated using a general tool such as a wrench, the plane parallel to the vertical surface of the locking portion formed corresponding to each side of the equilateral triangle or a part thereof is It does not exist, and the anti-theft screw cannot be rotated using a general tool. In addition, since it is extremely difficult to sandwich a substantially hemispherical head with a general tool, the head of the antitheft screw cannot be gripped and rotated using the general tool.

  In addition, since the protrusion is provided on the locking portion, a jig other than the dedicated fastening jig corresponding to the antitheft screw can not be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft screw, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft screw, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protrusion, and effective rotation torque is applied to the vertical surface of the locking portion of the anti-theft screw. It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft screw using a general tool, and the to-be-fastened object fastened using the anti-theft screw can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  Here, when the vertical surface of the locking portion is formed corresponding to each side of the equilateral triangle or a part thereof when viewed from above, the number of processed parts becomes the minimum and the vertical surfaces of the two adjacent locking portions The angle formed by this is 60 degrees, and slippage hardly occurs when rotational torque is applied to both surfaces, and the rotational torque can be effectively applied.

  In the present invention, it is preferable that the three locking portions have the same horizontal height from the bottom of the head when viewed from the side, and the plurality of locking portions have the same depth. As a result, when drawing an inscribed circle inscribed in the vertical surface of each locking portion when viewed from above, the center of the inscribed circle coincides with the axis of the shaft portion, and the arc of the horizontal plane of each locking portion is And located on the circumference of the same radius centered on the axis of the shaft portion. Accordingly, since the position of the locking portion is symmetric with respect to the shaft center of the shaft portion, the processing position of the locking portion is determined only by rotation around the shaft center, and cutting or die processing is easily performed. be able to. Further, no bending force is generated during the rotation operation.

  The anti-theft nut of the present invention is the anti-theft nut in which a female screw penetrating vertically is formed in the central portion, and an odd number of three or more locking portions are formed on the outer peripheral surface at intervals in the circumferential direction. The outer peripheral surface is formed in a substantially hemispherical shape and a truncated cone shape with a radius of curvature gradually decreasing toward the top surface, and each locking portion is formed from an arcuate vertical surface as a first surface as viewed from the side and from above. Each of the sides of the regular polygon having the odd number of apexes as viewed from above is formed by an arcuate horizontal surface as the second surface when viewed from above, or at least a part thereof. It is formed corresponding to three sides of one side and two sides opposite to the one side or a part thereof, and further, at one end of at least one locking portion, in the width direction in the horizontal plane of the locking portion Protrusions that prevent flat seating over the entire surface are provided. It is an.

  According to the present invention, each side of a regular polygon having three or more odd vertices or a part thereof or at least any one side even if an antitheft nut is to be rotated using a general tool such as a wrench. There is no parallel plane in the vertical plane of the locking portion formed corresponding to the three sides of the two sides facing the one side or a part thereof, and the antitheft nut is rotated using a general tool. It will not be possible. Moreover, since it is extremely difficult to sandwich an outer peripheral surface such as a substantially hemispherical shape with a general tool, the antitheft nut cannot be gripped and rotated by using the general tool.

  In addition, by providing a protrusion on the locking portion, a jig other than a dedicated fastening jig corresponding to the anti-theft nut cannot be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft nut, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft nut, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protrusion, and the rotation torque is effectively applied to the vertical surface of the locking portion of the anti-theft nut. It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft nut using a general tool, and the to-be-fastened object fastened using the anti-theft nut can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  The anti-theft nut of the present invention is the anti-theft nut in which a female screw penetrating vertically is formed in the central portion, and an odd number of three or more locking portions are formed on the outer peripheral surface at intervals in the circumferential direction. The outer peripheral surface is formed in a substantially hemispherical shape and a truncated cone shape with a radius of curvature gradually decreasing toward the top surface, and each locking portion is formed from an arcuate vertical surface as a first surface as viewed from the side and from above. As seen from above, it is formed by an arcuate horizontal surface as viewed from above, and the vertical surface of each locking portion is approximated to the regular polygon having the odd number of vertices when viewed from above, and the two opposite sides are Each side of a polygon that is non-parallel or a part thereof or at least one arbitrary side and three sides of two sides opposite to the one side or a part thereof, and at least one locking Across the entire width direction on the horizontal surface of the locking part at one end of the part It is characterized in that the protrusions for preventing the seating plane is provided.

  According to the present invention, even if an antitheft nut is to be rotated using a general tool such as a wrench, it approximates a regular polygon having an odd number of vertices of 3 or more and the two opposite sides are not parallel. There is a parallel plane on each side of a polygon or a part thereof, or at least one arbitrary side and three sides of two sides opposite to the one side, or a vertical surface of a locking portion formed corresponding to a part thereof. Therefore, the antitheft nut cannot be rotated using a general tool. In addition, since it is extremely difficult to sandwich an outer peripheral surface such as a substantially hemispherical shape with a general tool, the head of the antitheft nut cannot be gripped and rotated using the general tool.

  In addition, by providing a protrusion on the locking portion, a jig other than a dedicated fastening jig corresponding to the anti-theft nut cannot be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft screw, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft nut, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protruding portion, and effective rotation torque is applied to the vertical surface of the locking portion of the anti-theft nut It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft nut using a general tool, and the to-be-fastened object fastened using the anti-theft nut can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  In this case, the polygon approximated to the regular polygon is obtained by slightly rotating at least one side of each side of the regular polygon in the clockwise direction or the counterclockwise direction around the substantially middle portion in the length direction. Polygons can be mentioned. However, when the selected one side is rotated, if it becomes parallel to the opposite side, the possibility of using a general tool increases, so the rotation angle that maintains a non-parallel relationship with the opposite side is Required. In this way, the polygon that approximates the regular polygon has a greater degree of freedom of each side than the regular polygon, and the vertical surface of the locking portion is formed corresponding to each side or part thereof. Since many formation patterns can be set, it is possible to obtain many patterns by combining the formation pattern of the vertical surface of the locking part and the formation pattern of the protrusion, and the fastening is released by another person's dedicated fastening jig. The risk of this can be further reduced.

  In the present invention, when viewed from the side, the height of one of the plurality of locking portions from the bottom surface of the horizontal surface is higher than the height of the other two or more locking portions from the bottom surface of the horizontal surface. Is also preferably high or low. Thereby, the formation pattern of the horizontal surface of the locking portion can be changed, and many patterns can be combined by combining the formation pattern of the protruding portion, or by combining the formation pattern of the vertical surface of the locking portion and the forming pattern of the protruding portion. Can be obtained, and the risk that the fastening is released by another person's dedicated fastening jig can be further reduced.

  In this invention, it is preferable that the height from the bottom face of the horizontal surface of the plurality of locking portions is different from each other when viewed from the side. Thereby, the formation pattern of the horizontal surface of the locking portion can be changed, and many patterns can be combined by combining the formation pattern of the protruding portion, or by combining the formation pattern of the vertical surface of the locking portion and the forming pattern of the protruding portion. Can be obtained, and the risk that the fastening is released by another person's dedicated fastening jig can be further reduced.

  The anti-theft nut of the present invention is an anti-theft nut in which a female screw penetrating vertically is formed at the center, and three locking portions are formed on the outer peripheral surface at intervals in the circumferential direction. Each of the locking portions has a bow-shaped vertical surface as a first surface as viewed from the side and a second surface as viewed from above. The vertical surface of each locking portion is formed corresponding to each side or part of the equilateral triangle when viewed from above, and is formed by an arcuate horizontal plane as a surface, and at least one locking portion One end portion of the locking portion is provided with a projection portion that prevents seating of the plane over the entire width direction on the horizontal surface of the locking portion.

  According to the present invention, even if an attempt is made to rotate the anti-theft nut using a general tool such as a wrench, the plane parallel to the vertical surface of the locking portion formed corresponding to each side of the equilateral triangle or a part thereof is It does not exist, and the antitheft nut cannot be rotated using a general tool. Moreover, since it is extremely difficult to sandwich an outer peripheral surface such as a substantially hemispherical shape with a general tool, the antitheft nut cannot be gripped and rotated by using the general tool.

  In addition, by providing a protrusion on the locking portion, a jig other than a dedicated fastening jig corresponding to the anti-theft nut cannot be brought into surface contact with the horizontal surface of the locking portion by the protrusion and is inclined. Therefore, it is difficult to effectively transmit the rotational torque to the vertical surface of the locking portion of the anti-theft nut, and the rotation operation cannot be performed.

  On the other hand, in the exclusive fastening jig corresponding to the anti-theft nut, it is possible to make a surface contact with the horizontal surface of the locking portion while avoiding the protrusion, and effective rotation torque is applied to the vertical surface of the locking portion of the anti-theft screw. It is possible to communicate with the camera, and it can be easily rotated.

  As a result, it is almost impossible to release the fastening of the anti-theft nut using a general tool, and the to-be-fastened object fastened using the anti-theft nut can be prevented from being stolen or mischievous. In addition, since the formation pattern of the protrusions with respect to the locking portion can be changed, there is a greater possibility that another person's dedicated fastening jig will not respond, and there is a danger that the fastening will be released by another person's dedicated fastening jig. The sex can be made as small as possible.

  Here, when the vertical surface of the locking portion is formed corresponding to each side of the equilateral triangle or a part thereof when viewed from above, the number of processed parts becomes the minimum and the vertical surfaces of the two adjacent locking portions The angle formed by this is 60 degrees, and slippage hardly occurs when rotational torque is applied to both surfaces, and the rotational torque can be effectively applied.

  In the present invention, it is preferable that the three locking portions have the same height from the bottom surface of the horizontal surface when viewed from the side, and the horizontal surfaces of the plurality of locking portions have the same depth. As a result, when drawing an inscribed circle inscribed in the vertical surface of each locking portion when viewed from above, the center of the inscribed circle coincides with the center of the female screw, and the horizontal plane arc of each locking portion is It is located on the circumference of the same radius centering on the center of. Therefore, since the position of the locking portion is symmetric with respect to the center of the female screw, the processing position of the locking portion is determined only by rotation around the axis, and cutting or die processing can be easily performed. it can. Further, no bending force is generated during the rotation operation.

  The dedicated fastening jig for the anti-theft screw of the present invention accommodates the top surface side of the rotation operation portion in the anti-theft screw according to any one of claims 1 to 4 at the tip portion, and at each locking portion. A fitting portion capable of surface contact is formed.

  According to the present invention, since each corresponding fitting portion can be brought into contact with the locking portion in the anti-theft screw, the rotational torque is applied to the locking portion in the anti-theft screw by rotating the dedicated fastening jig. Can be transmitted effectively and can be easily rotated.

  The dedicated fastening jig for the anti-theft screw of the present invention accommodates the top surface side of the head in the anti-theft screw according to any one of claims 5 to 8 at the tip, and avoids the protrusion. An odd number of fitting portions each having a vertical surface and a horizontal surface that can come into surface contact with the vertical surface and the horizontal surface of each locking portion are formed, and a connecting portion including at least a pair of parallel surfaces is formed at the base end portion. It is characterized by this.

  According to the present invention, the vertical contact and the horizontal surface of the odd number of locking portions in the anti-theft screw avoid the protrusions provided with the vertical surfaces and the horizontal surfaces of the corresponding fitting portions on the locking portions, and are in surface contact. Can be made. Accordingly, when the dedicated fastening jig is rotated via the connecting portion, it is possible to effectively transmit the rotational torque to the vertical surface of the locking portion of the antitheft screw, and the rotation can be easily performed.

  As a result, the corresponding antitheft screw can be easily fastened and released.

  The dedicated fastening jig for the anti-theft nut according to the present invention accommodates the top surface side of the anti-theft nut according to any one of claims 11 to 14 at a tip portion, An odd number of fitting portions having a vertical surface and a horizontal surface that can come into surface contact with the vertical surface and the horizontal surface, respectively, are formed, and a connecting portion including at least a pair of parallel surfaces is formed at the base end portion. It is what.

  According to the present invention, the vertical contact and the horizontal surface of the odd number of locking portions in the anti-theft nut avoid the protrusions provided on the locking portions with the vertical surfaces and horizontal surfaces of the corresponding fitting portions. Can be made. Therefore, when the dedicated fastening jig is rotated via the connecting portion, it is possible to effectively transmit the rotational torque to the vertical surface of the locking portion of the antitheft nut, and the rotation can be easily performed.

  As a result, the corresponding anti-theft nut can be easily fastened and released.

  The exclusive fastening jig for the anti-theft screw according to the present invention accommodates the top surface side of the head in the anti-theft screw according to claim 9 or 10 at the tip, and avoids the protrusions and Three fitting portions having a vertical surface and a horizontal surface that can come into surface contact with the vertical surface and the horizontal surface, respectively, are formed, and a connecting portion including at least a pair of parallel surfaces is formed at the base end portion. Is.

  According to the present invention, the vertical contact surfaces and the horizontal surfaces of the three locking portions in the anti-theft screw avoid the protrusions provided on the locking portions with the vertical surfaces and horizontal surfaces of the corresponding fitting portions. Can be made. Accordingly, when the dedicated fastening jig is rotated via the connecting portion, it is possible to effectively transmit the rotational torque to the vertical surface of the locking portion of the antitheft screw, and the rotation can be easily performed.

  As a result, the corresponding antitheft screw can be easily fastened and released.

  The dedicated anti-theft jig for the anti-theft nut of the present invention accommodates the top surface side of the anti-theft nut according to claim 15 or 16 at the tip, avoids the protrusions, and Three fitting portions each having a vertical surface and a horizontal surface that can be brought into surface contact with the horizontal surface are formed, and a connecting portion including at least a pair of parallel surfaces is formed at the base end portion. .

  According to the present invention, the vertical contact surfaces and the horizontal surfaces of the three locking portions in the antitheft nut avoid the protrusions provided with the vertical surfaces and the horizontal surfaces of the corresponding fitting portions on the locking portions. Can be made. Therefore, when the dedicated fastening jig is rotated via the connecting portion, it is possible to effectively transmit the rotational torque to the vertical surface of the locking portion of the antitheft nut, and the rotation can be easily performed.

  As a result, the corresponding anti-theft nut can be easily fastened and released.

  The anti-theft screw set of the present invention is characterized in that the anti-theft screw according to any one of claims 1 to 4 and a dedicated fastening jig for the anti-theft screw according to claim 17 are bundled. To do.

  The anti-theft screw set of the present invention is characterized in that the anti-theft screw according to any one of claims 5 to 8 and a dedicated fastening jig for the anti-theft screw according to claim 18 are bundled. To do.

  According to the present invention, the anti-theft screw and a dedicated fastening jig corresponding to the anti-theft screw are included, so that the anti-theft screw having a large number of formation patterns of the locking portion and the protruding portion is supported. In addition to searching for multiple types of dedicated fastening jigs, and conversely, it is possible to save time and effort to search for anti-theft screws corresponding to dedicated fastening jigs with multiple forming patterns of fitting parts. In addition, inventory management becomes easier as compared with the case where a large number of anti-theft screws and a large number of dedicated fastening jigs are individually managed.

  The anti-theft nut set of the present invention is characterized in that the anti-theft nut according to any one of claims 11 to 14 and a dedicated fastening jig for the anti-theft nut according to claim 19 are bundled. To do.

  According to the present invention, the anti-theft nut and the exclusive fastening jig corresponding to the anti-theft nut are included, so that it corresponds to the anti-theft nut having a large number of formation patterns of the locking portion and the protruding portion. In addition to searching for multiple types of dedicated fastening jigs, and conversely, it is possible to save time and effort to search for various types of anti-theft nuts corresponding to dedicated fastening jigs that have multiple formation patterns of fitting parts. In addition, inventory management becomes easier as compared with the case where a large number of types of anti-theft nuts and a large number of types of dedicated fastening jigs are individually managed.

  The anti-theft screw set of the present invention is characterized in that the anti-theft screw according to claim 9 or 10 and a dedicated fastening jig for the anti-theft screw according to claim 20 are bundled.

  According to the present invention, the anti-theft screw and a dedicated fastening jig corresponding to the anti-theft screw are included, so that the anti-theft screw having a large number of formation patterns of the locking portion and the protruding portion is supported. In addition to searching for multiple types of dedicated fastening jigs, and conversely, it is possible to save time and effort to search for anti-theft screws corresponding to dedicated fastening jigs with multiple forming patterns of fitting parts. In addition, inventory management becomes easier as compared with the case where a large number of anti-theft screws and a large number of dedicated fastening jigs are individually managed.

  The anti-theft nut set of the present invention is characterized in that the anti-theft nut according to claim 15 or 16 and an exclusive fastening jig for the anti-theft nut according to claim 21 are bundled.

  According to the present invention, the anti-theft nut and the exclusive fastening jig corresponding to the anti-theft nut are included, so that it corresponds to the anti-theft nut having a large number of formation patterns of the locking portion and the protruding portion. In addition to searching for multiple types of dedicated fastening jigs, and conversely, it is possible to save time and effort to search for various types of anti-theft nuts corresponding to dedicated fastening jigs that have multiple formation patterns of fitting parts. In addition, inventory management becomes easier as compared with the case where a large number of anti-theft screws and a large number of dedicated fastening jigs are individually managed.

  According to the anti-theft screw and the anti-theft nut of the present invention, the possibility that the fastening is released by another person's dedicated fastening jig other than the corresponding dedicated fastening jig can be minimized.

  According to the anti-theft screw dedicated fastening jig and the anti-theft nut exclusive fastening jig of the present invention, the corresponding anti-theft screw and anti-theft nut can be easily fastened and released using a wrench or the like. Can do.

1 shows an embodiment of the anti-theft screw of the present invention, in which (a) is a perspective view, (b) is a plane portion, and (c) is a cross-sectional view taken along line AA of (b). The exclusive fastening jig | tool of the antitheft screw of FIG. 1 is shown, (a) is a perspective view, (b) is a top view, (c) is a BB sectional drawing of (b). (A)-(c) is process drawing explaining the process of fastening the antitheft screw of FIG. 1 using the exclusive fastening jig | tool of FIG. It is explanatory drawing which shows the point which fixes a car navigation using the antitheft screw of FIG. 1, and the exclusive fastening jig | tool of FIG. It is the schematic which fastened the number plate using the antitheft screw of FIG. It is the schematic which fastened the surface lattice using the antitheft screw of FIG. One Embodiment of an antitheft nut of this invention is shown, (a) is a perspective view, (b) is a top view, (c) is CC sectional view taken on the line of (b). (A)-(j) is a top view which illustrates the formation pattern of a projection part. The modification of the latching | locking part in an antitheft screw is shown, (a) is a perspective view, (b) is a top view. The other modification of the latching | locking part of an antitheft screw is shown, (a) is a perspective view, (b) is a top view. The other modification of the latching | locking part of an antitheft screw is shown, (a) is a perspective view, (b) is a top view. The other another modification of the latching | locking part of an antitheft screw is shown, (a) is a perspective view, (b) is a top view. The another modification of the latching | locking part of an antitheft screw is shown, (a) is a perspective view, (b) is a top view. The other embodiment of the anti-theft screw of this invention is shown, (a) is a perspective view, (b) is a top view. 14 shows a modified example of the anti-theft screw of FIG. 14, (a) is a perspective view, and (b) is a plan view. (A) And (b) is a top view which shows other embodiment of the antitheft screw of this invention, respectively. The other embodiment of the anti-theft screw of this invention is shown, (a) is sectional drawing, (b) is a perspective view. (A)-(c) is sectional drawing which each shows the principal part of the antitheft screw of this invention. The other embodiment of the anti-theft screw of this invention is shown, (a) is a top view, (b) is a perspective view, (c) is a schematic diagram. The other embodiment of the antitheft screw of this invention is shown, (a) is the DD sectional view taken on the line of (b), (b) is a top view. Other embodiment of the antitheft nut of this invention is shown, (a) is a top view, (b) is a perspective view, (c) is a top view, (d) is a perspective view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of an anti-theft bolt (anti-theft male screw) as the anti-theft screw of the present invention.

  The anti-theft screw 1 includes a shaft portion 2 having a male screw 2a formed on the outer peripheral surface thereof, and a head portion 3 as a rotation operation portion formed integrally with one end of the shaft portion 2. In the outer peripheral surface of the, an odd number of three or more (three in the embodiment) locking portions 31 are provided at intervals in the circumferential direction so as to be rotated only by a dedicated fastening jig 10 described later. Is formed.

  Here, the head 3 is formed in a hemispherical shape that is difficult to grasp with a general tool such as a wrench, spanner, pliers, and pliers, but it may have a truncated cone shape or a cone shape.

  The three locking portions 31 formed on the head 3 are each an arcuate vertical surface 31v as a first surface when viewed from the side, and an arcuate shape as a second surface when viewed from above. It is comprised from the notch part formed of the horizontal surface 31h. When viewed from above, the vertical surface 31v of each locking portion 31 is formed corresponding to a part of each side of the equilateral triangle. Further, the horizontal surface 31 h is formed at the same height position from the bottom surface of the head 3. In other words, when drawing an inscribed circle inscribed in the vertical surface 31v of each locking portion 31 when viewed from above, the center of the inscribed circle coincides with the axis of the shaft portion 2, and each locking portion 31 The arc of the horizontal plane 31 h is located on the circumference of the same radius centered on the axis of the shaft portion 2.

  Here, when viewed from above, as shown in FIG. 1B, it means a plan view of the antitheft screw 1 with the head 3 facing upward. “Looking from the side” means a side view with the head 3 corresponding to FIG. The vertical surface 31v refers to a surface along the axis of the male screw 2a. The horizontal surface 31h refers to a surface in a direction orthogonal to the axis. The vertical plane 31v and the horizontal plane 31h are formed in the intersecting direction, and in this embodiment, the angle α between the vertical plane 31v and the horizontal plane 31h is set to approximately 90 ° (see FIG. 18A). ).

  Each locking portion 31 is formed with a substantially triangular pyramid-shaped protrusion 32 having a curved surface that is smoothly continuous with the outer peripheral surface of the head 3 at one end (left end). . Accordingly, it is possible to prevent the flat surface from being seated over the entire width of the arc-shaped horizontal surface 31 h of the locking portion 31. That is, only a plane having a recess that avoids the protrusion 32 can come into surface contact with the horizontal surface 31 h of the locking portion 31 without interfering with the protrusion 32.

  The protrusion 32 can be formed by cutting the portion corresponding to the protrusion 32 when the anti-theft screw 1 is manufactured by cutting using a machining center or the like. However, after cutting the bow-shaped vertical surface 31v and the horizontal surface 31h, an appropriately shaped projection may be formed by bonding or welding. Further, when the anti-theft screw 1 is manufactured by forging such as cold forging, a portion corresponding to the locking portion 31 is formed in a convex shape on the mold, whereas a portion corresponding to the protruding portion 32 is formed in a concave shape. What is necessary is just to form. That is, the mold may be manufactured by reversing the projections and depressions according to the locking portion 31 and the protrusion 32.

  2 shows a dedicated fastening jig 10 for fastening the anti-theft screw 1 of FIG.

  The dedicated fastening jig 10 accommodates the top side of the head 3 of the anti-theft screw 1 at the distal end portion 11 and avoids the protrusion 32 so as to make surface contact with the vertical surface 31v and the horizontal surface 31h of the locking portion 31, respectively. Three fitting portions 111 each including a possible vertical surface 111v and a horizontal surface 111h are formed, and the base end portion 12 has at least a pair of parallel surfaces (in the embodiment, a cross-sectional hexagon including three pairs of parallel surfaces). A connecting portion 121 that is connectable to a wrench (formed in a shape) is formed.

  That is, the dedicated fastening jig 10 corresponds to the fact that the protrusions 32 are formed at the left end portions of the three locking portions 31 of the anti-theft screw 1, and the vertical surfaces of the fitting portions 111. 111 v and the horizontal surface 111 h can be brought into surface contact with the vertical surface 31 v and the horizontal surface 31 h of the locking portion 31 in a range excluding the protrusion 32, respectively, and are orthogonal to the vertical surface 111 v and the horizontal surface 111 h, and It has a boundary surface 111b substantially in contact with the end surface, and the vertical surface 111v and the boundary surface 111b have a height that accommodates the top of the head 3 in the antitheft screw 1 (the portion above the horizontal surface 31h of the locking portion 31). It extends to the bottom surface 112. Thus, when the horizontal surface 111h of each fitting portion 111 comes into surface contact with the horizontal surface 31h of each locking portion 31, the protrusion 32 is formed in the space formed by the boundary surface 111b, the extended surface of the vertical surface 111v, and the bottom surface 112. Can be accommodated.

  In addition, the vertical surface 111v of each fitting part 111 in the dedicated fastening jig 10 has a substantially intermediate portion in the width direction corresponding to the periphery of the part where the height of the vertical surface 31v of the locking part 31 is maximum. Slightly bulged.

  On the other hand, such a dedicated fastening jig 10 is bundled together with the above-described plurality of anti-theft screws 1, and the anti-theft where these plural anti-theft screws 1 and the dedicated fastening jig 10 are bundled. A consumer who has purchased a screw set can use the dedicated fastening jig 10 to rotate the anti-theft screw 1 to fasten it, or rotate the fastened anti-theft screw 1 to release the fastening. .

  Specifically, as shown in FIG. 3, the vertical surface 111 v and the horizontal surface 111 h of each fitting portion 111 at the distal end portion 11 of the dedicated fastening jig 10 are connected to the vertical surface 31 v of each locking portion 31 in the antitheft screw 1. And the horizontal surface 31h of each fitting portion 111 is brought into contact with the horizontal surface 31h of each locking portion 31 in the anti-theft screw 1 to restrict further movement in the axial direction. In addition, the vertical surface 111v of each fitting portion 111 is in surface contact with the vertical surface 31v of each locking portion 31. That is, the horizontal surface 111h of each fitting portion 111 in the dedicated fastening jig 10 accommodates the protrusion 32 in the space defined by the boundary surface 111b, so that the engagement portion 31 does not interfere with the protrusion 32. It can be seated in surface contact with the horizontal surface 31h (see FIGS. 3A and 3B).

  Next, when the connecting portion 121 of the dedicated fastening jig 10 is rotated using a wrench or the like, the substantially intermediate portion in the width direction of the vertical surface 111v of each fitting portion 111 in the dedicated fastening jig 10 is perpendicular to the locking portion 31. Since the surface 31v is in contact with the periphery of the portion where the height is maximum, the vertical surface 31v of the locking portion 31 via the vertical surface 111v of the fitting portion 111, that is, the anti-theft screw 1 is rotated around its axis. The anti-theft screw 1 can be rotated via the dedicated fastening jig 10. As a result, the object to be fastened, for example, the car navigation N (see FIG. 4), the license plate P (see FIG. 5), the surface lattice G (see FIG. 6), etc. can be fastened by the anti-theft screw 1.

  On the other hand, when releasing the fastening of the object to be fastened by the anti-theft screw 1, the vertical surface 111 v and the horizontal surface 111 h of each fitting portion 111 in the dedicated fastening jig 10 are used as the vertical surface of each locking portion 31 in the anti-theft screw 1. After fitting to 31v and the horizontal surface 31h, the connecting portion 121 of the dedicated fastening jig 10 is rotated in the direction opposite to the fastening direction described above using a wrench or the like. As a result, the intermediate portion in the width direction of the vertical surface 111v of each fitting portion 111 in the dedicated fastening jig 10 comes into surface contact with the periphery of the portion where the height of the vertical surface 31v of the locking portion 31 is maximum, thereby preventing theft. Since the rotational torque is applied to the screw 1 around its axis, the anti-theft screw 1 can be loosened to release the fastened object.

  As described above, in the anti-theft screw 1 of the present embodiment, the locking portion 31 is formed of the cutout portion formed by the vertical surface 31v and the horizontal surface 31h, so that the dedicated fastening jig 10 can be easily attached to the head 3. The anti-theft screw 1 can be fastened or released simply by rotating the dedicated fastening jig 10.

  When the anti-theft screw 1 is to be directly rotated using a general tool such as a wrench, the general tool is set so as to sandwich at least a pair of parallel surfaces and apply rotational torque. The three vertical surfaces 31v formed on part of each side of the equilateral triangle when viewed from above do not have a parallel surface, and the antitheft screw 1 cannot be rotated using a general tool. Become. Moreover, the shape of the outer peripheral surface of the head 3 of the anti-theft screw 1 is substantially hemispherical, and it is extremely difficult to sandwich the anti-theft screw 1 while making surface contact with the general tool. 1 head 3 cannot be grasped and cannot be rotated.

  As a result, it is almost impossible to fasten or release the anti-theft screw 1 using a general tool. Theft of an object to be fastened such as car navigation fastened using the anti-theft screw 1 And can prevent mischief. Or the opportunity which tries to steal in favor of spending much time for fastening cancellation | release of a to-be-fastened object will decrease.

  In addition, when there is no space for avoiding the projection 32 in the dedicated fastening jig other than the dedicated fastening jig 10 bundled with the anti-theft screw 1, for example, one fitting portion 111, The facing horizontal surface 111h rides on the protrusion 32 of the anti-theft screw 1 and tilts, and cannot be seated so as to be in surface contact with the horizontal surface 31h of the locking portion 31. As a result, the other horizontal surface 111h also rises from the horizontal surface 31h of the locking portion 31 of the anti-theft screw 1 and cannot come into surface contact, so that those vertical surfaces 111v are perpendicular to the locking portion 31 of the anti-theft screw 1. Since the surface contact area with the surface 31v becomes small, it is difficult to effectively transmit the rotational torque, and the rotation operation cannot be performed.

  FIG. 7 shows an embodiment of an antitheft nut 5 as the antitheft screw of the present invention.

  The anti-theft nut 5 is formed with a female screw 5a in the center, and three or more circumferentially spaced on the outer peripheral surface thereof so that it can be rotated only by the dedicated fastening jig 10 described above. Odd-numbered (three in the embodiment) locking portions 51 are formed. In the case of the anti-theft nut 5, the anti-theft nut 5 itself constitutes a rotation operation unit.

  Here, the anti-theft nut 5 is formed in a hemispherical shape whose outer shape is difficult to be gripped by a general tool such as a wrench, spanner, pliers, and pliers, but may have a truncated cone shape.

  And the three latching | locking parts 51 formed in the outer peripheral surface of the antitheft nut 5 are each formed by the arch-shaped vertical surface 51v seen from the side, and the arch-shaped horizontal surface 51h seen from the upper side, When viewed from above, the vertical surface 51v of each locking portion 51 is formed corresponding to a part of each side of the equilateral triangle, and the horizontal surface 51h is formed at the same height position from the bottom surface. In other words, when drawing an inscribed circle inscribed in the vertical surface 51v of each locking portion 51 as viewed from above, the center of the inscribed circle coincides with the center of the female screw 5a, and the horizontal plane of each locking portion 51 The arc of 51h is located on the circumference of the same radius centered on the center of the female screw 5a.

  Each locking portion 51 is formed with a substantially triangular pyramidal projection 52 having a curved surface that is smoothly continuous with the outer peripheral surface at one end (left end). Accordingly, it is possible to prevent the flat surface from being seated on the arcuate horizontal surface 51h of the locking portion 51 over its entire width. That is, only a plane having a recess that avoids the protrusion 52 can come into surface contact with the horizontal surface 51 h of the locking portion 51 without interfering with the protrusion 52.

  The protrusion 52 can be formed by cutting the portion corresponding to the protrusion 52 when the anti-theft nut 5 is manufactured by cutting using a machining center or the like. However, after cutting the bow-shaped vertical surface 51v and the horizontal surface 51h, a protrusion having an appropriate shape may be built up by adhesion or welding. Further, when the anti-theft nut 5 is manufactured by forging such as cold forging, a portion corresponding to the locking portion 51 is formed in a convex shape on the mold, whereas a portion corresponding to the protruding portion 52 is formed in a concave shape. What is necessary is just to form. That is, the mold may be manufactured by reversing the concavity and convexity according to the locking part 51 and the protruding part 52.

  Such a plurality of anti-theft nuts 5 are bundled together with the above-described dedicated fastening jig 10, and the anti-theft nut set in which the plurality of the anti-theft nuts 5 and the dedicated fastening jig 10 are bundled. Can use the dedicated fastening jig 10 to rotate the anti-theft nut 5 to fasten it, or rotate the fastened anti-theft nut 10 to release the fastening.

  Specifically, the vertical surface 111v and the horizontal surface 111h of each fitting portion 111 at the distal end portion of the dedicated fastening jig 10 are fitted to the vertical surface 51v and the horizontal surface 51h of each locking portion 51 in the antitheft nut 5. Let At this time, the horizontal surface 111h of each fitting portion 111 of the dedicated fastening jig 10 is in surface contact with each horizontal surface 51h of the locking portion 51 while avoiding the protrusion 52 in the space defined by the boundary surface 111b. The vertical surfaces 111v of the fitting portions 111 are in surface contact with the vertical surfaces 51v of the locking portions 51, respectively.

  Next, when the connecting portion 121 of the dedicated fastening jig 10 is rotated using a wrench or the like, the substantially intermediate portion in the width direction of the vertical surface 111v of each fitting portion 111 is the height of the vertical surface 51v of the locking portion 51. Since it is in contact with the periphery of the largest portion, a rotational torque is applied to the vertical surface 51v of the locking portion 51, that is, the antitheft nut 5 around its axis via the vertical surface 111v of the fitting portion 111. The antitheft nut 5 can be rotated via the dedicated fastening jig 10. As a result, the object to be fastened can be fastened by being pinched via the existing screw such as a bolt and the anti-theft nut 5 screwed into the screw.

  Here, when the anti-theft nut 5 is screwed into a screw such as a bolt, the screw protrudes through the anti-theft nut 5, so that the dedicated fastening jig 10 needs a space for accommodating the screw.

  On the other hand, when releasing the fastening of the object to be fastened by the anti-theft nut 5, the vertical surface 111 v and the horizontal surface 111 h of each fitting portion 111 in the dedicated fastening jig 10 are used as the vertical surface of each locking portion 51 in the anti-theft nut 10. 51v and the horizontal surface 51h, after fitting, the connection part 121 of the exclusive fastening jig | tool 10 is rotated in the opposite direction to the fastening direction mentioned above using a wrench. As a result, the intermediate portion in the width direction of the vertical surface 111v of each fitting portion 111 in the dedicated fastening jig 10 comes into surface contact with the periphery of the portion where the height of the vertical surface 51v of the locking portion 51 is maximum, thereby preventing theft. Since rotational torque is applied to the nut 5 about its axis, the antitheft nut 5 can be loosened to release the fastening of the object to be fastened.

  In addition, when trying to rotate the anti-theft nut 5 using a general tool such as a wrench, the general tool is set so as to sandwich at least a pair of parallel surfaces and apply rotational torque. There are no parallel surfaces in the three vertical surfaces 51v formed corresponding to part of each side of the equilateral triangle when viewed from above, and the antitheft nut 5 cannot be rotated using a general tool. It will be a thing. Moreover, since the outer peripheral shape of the antitheft nut 5 is substantially hemispherical and it is extremely difficult to sandwich the antitheft nut 5 while making surface contact with a general tool, the antitheft nut 5 is gripped using a general tool. Rotation operation is also impossible.

  As a result, it is almost impossible to fasten or release the anti-theft nut 5 using a general tool, preventing the theft or mischief of an object to be fastened using the anti-theft nut 5. can do.

  By the way, since the anti-theft screw 1 and the anti-theft nut 5 described above are provided together with their dedicated fastening jigs 10, the locking portions 31, 51 provided with the protruding portions 32, 52 are simply provided. In the case of one pattern, as the sales quantity increases, the chance of encountering another person's anti-theft screw 1 or anti-theft nut 5, that is, the chance of encountering theft or mischief increases.

  For this reason, by changing the formation pattern of the protrusions 32 and 52 with respect to the locking portions 31 and 51, and by changing the position of the locking portions 31 and 51, specifically, the radius, height, and orientation, Furthermore, by combining them, the anti-theft screw set consisting of the anti-theft screw 1 and its exclusive fastening jig 10 purchased by one purchaser, or the anti-theft consisting of the anti-theft nut 5 and its exclusive fastening jig 10. An anti-theft screw set comprising an anti-theft screw 1 purchased by another purchaser and its dedicated fastening jig 10; or an anti-theft nut set comprising an anti-theft nut 5 and an exclusive fastening jig 10 thereof. It is preferable to reduce the chance of matching as much as possible.

  For example, as the formation pattern of the protrusions 32 and 52, as shown in FIG. 8, the previous embodiment in which the protrusions 32 and 52 are formed at the left end portions of the respective locking portions 31 and 51 (FIG. 8 ( In addition to g), the following patterns are possible:

  That is, the pattern which forms the protrusion parts 32 and 52 in the left end part or right end part of the one latching | locking part 31 and 51 (refer Fig.8 (a) (b)), and the two latching | locking part 31 51, a pattern for forming protrusions 32, 52 at the left end of each locking part 31, 51 (see FIG. 8C), and a protrusion at the right end of each locking part 31, 51 32, 52 (see FIG. 8 (f)), the left end of one locking part 31, 51 and the right end of the other locking part 31, 51 are protrusions 32, 52, respectively. Or a pattern in which protrusions 32 and 52 are formed on the right end of one locking portion 31 and 51 and the left end of the other locking portion 31 and 51, respectively (FIG. 8D). e) Reference) In the three locking portions 31, 51, the protruding portions 32, 52 are formed at the right end portions of the locking portions 31, 51, respectively. Turn (see FIG. 8 (j)) A pattern in which protrusions 32 and 52 are formed on the left end of the two locking portions 31 and 51 and the right end of the one locking portion 31 and 51, respectively. (See FIG. 8 (h)) A pattern in which protrusions 32, 52 are formed on the right end of the two locking portions 31, 51 and the left end of the one locking portion 31, 51, respectively (see FIG. 8 (i)).

  By selectively adopting an arbitrary formation pattern from the formation pattern group of the plurality of protrusions 32 and 52, an anti-theft screw set, an anti-theft nut set purchased by one purchaser, and other purchases The chance of matching the anti-theft screw set and anti-theft nut set purchased by the user can be reduced.

  In addition, when manufacturing the exclusive fastening jig | tool 10 corresponding to the anti-theft screw 1 and the anti-theft nut 5 in which the formation pattern of the projection parts 32 and 52 provided in such latching parts 31 and 51 differs is good. As is known, using the cutting data that leaves the projections 32 and 52 in the locking portions 31 and 51 of the anti-theft screw 1 and the anti-theft nut 5 without cutting in a specific pattern, 52 can be manufactured by cutting the fitting portion 111 that can be fitted to the plate 52 in reverse.

  In addition, in order to manufacture the dedicated fastening jig 10 corresponding to the anti-theft screw 1 and the anti-theft nut 5 having different formation patterns of the protrusions 32 and 52 by forging, a die corresponding to each pattern may be prepared.

  On the other hand, as a pattern for forming the locking portions 31 and 51 in the anti-theft screw 1 or the anti-theft nut 5 by changing their positions, the case of the anti-theft screw 1 is shown in FIG. In addition, by changing the radius of the inscribed circle, the position of the vertical surface 31v in contact with the inscribed circle as viewed from above is changed, and the exclusive fastening corresponding to the locking portion 31 including these vertical surfaces 31v. It can be fastened only by the jig 10.

  Hereinafter, the formation pattern of the locking part 31 is shown on behalf of the anti-theft screw 1.

  Moreover, the formation pattern of the latching | locking part 31 can be increased by changing the height position which forms the horizontal surface 31h of the one latching | locking part 31 among the three latching | locking parts 31 (FIG. 10, FIG. 11). In addition, the formation pattern of the locking portions 31 can be increased by changing the height positions for forming the horizontal surfaces 31h of all the three locking portions 31 (see FIG. 12). In this case, it is preferable to form so that the depth of the horizontal surface 31h of each latching | locking part 31 may correspond substantially.

  Furthermore, in the above-described embodiment, the case where the vertical surface 31v of the locking portion 31 is formed corresponding to a part of each side of the equilateral triangle as viewed from above is illustrated, but the inequality that approximates the equilateral triangle. It may be formed corresponding to each side of the deformed triangle or a part thereof. For example, as shown in FIG. 13, of the three locking portions 31, 51, the vertical surface 31 v of at least one locking portion 31 as viewed from above is rotated clockwise about the substantially middle portion in the width direction. It is possible to increase the formation pattern of the locking portions 31 by slightly rotating in the direction or counterclockwise.

  Furthermore, in the embodiment described above, the vertical surface 31v of the locking portion 31 when viewed from above corresponds to each side of an equilateral triangle or a part thereof, or each side or part of an invariant triangle. Although the case of forming is described, the shape is not limited to a triangle, and the vertex may be formed corresponding to each side or part of an odd number of regular polygons. For example, as shown in FIG. 14, the vertical surface 31v of the locking portion 31 may be formed corresponding to each side of a regular pentagon, and as a modification thereof, at least one arbitrary side faces the one side. As shown in FIG. 15, two sides of the regular pentagon may be formed corresponding to two adjacent sides of the regular pentagon and the opposite side where the apex angles of the two sides are opposite to each other. In this case, a pentagon other than a regular pentagon may be used.

  Needless to say, a modification of the locking portion 31 formed corresponding to a triangle can be applied to a polygon of pentagon or more.

  In the present invention, as shown in FIG. 16A, the position of the protrusion 32 can be provided in the middle part in the width direction of the vertical surface 31v of the locking part 31, and is not particularly limited. Absent. In such a case, a groove for allowing the protruding portion 32 to escape is formed on the vertical surface 111v of each fitting portion 111 of the dedicated fastening jig 10.

  The vertical surface (first surface) 31v of the locking portion 31 is a plane, but as shown by a solid line in FIG. 16B, it may be formed to be concave on the inside, or indicated by a virtual line. Thus, it may be formed so as to be slightly convex outward.

  FIGS. 17A and 17B illustrate the case where the cross-sectional shape of the head 3 is a truncated cone. However, the shape of the head 3 may be a general tool. Even if it is going to be pinched with, as long as the tool slides on the surface of the head 3, there is no particular limitation.

  Moreover, although the said embodiment illustrated the case where the angle (alpha) between the vertical surface 31v of the latching | locking part 31 and the horizontal surface 31h was set to about 90 degrees as shown to Fig.18 (a), this angle is shown. α can be arbitrarily set. For example, the angle α can be set to an obtuse angle (see FIG. 5B). Specifically, the first surface 31v is set in a range of 0 to 30 ° toward the axis with respect to the vertical line (direction along the axis) L1, and the second surface 31h is a horizontal line (with the axis center). The direction α is set in a range of 0 to 60 ° toward the bottom surface of the head 3 with respect to L2, and the angle α is set to be more than 90 ° and not more than 160 °. Further, the angle α can be an acute angle (see FIG. 10C). Specifically, the first surface 31v can be set to be vertical, and the second surface can be inclined in the direction opposite to the bottom surface of the head 3 (top surface direction).

  As described above, the angle α can be set to 45 ° to 160 °. As described above, by setting the angle α within a predetermined range, it is possible to combine many types of the anti-theft screw 1 and the dedicated fastening jig 10 while making the fitting with the dedicated fastening jig 10 good.

  The embodiment of the anti-theft screw 1 shown in FIG. 19 exemplifies a case where the number of the locking portions 31 is one. That is, the head 3 has a protruding portion whose diameter gradually decreases from the bottom surface to the top surface, and the shape of the head 3 is formed in a circle when viewed from above, and the peripheral surface of the head 3 One locking portion 31 made of a notch is formed. A cylindrical fitting that engages with the locking portion 31 and is detachably fitted to the head 3 so as not to rotate relative to the tip of the dedicated fastening jig 10 that rotates the antitheft screw 1. A joint portion 10a is provided.

  Further, the head (rotation operation unit) 3 is not necessarily circular. As shown in FIG. 20, the locking portion 31 is formed by cutting out a plurality of locations on the outer week surface of the head 3 into an arc shape or a flat surface. And each latching | locking part 31 is formed in the inclined surface which mutually approaches from the bottom face of the head 3 toward the top face from the bottom face. Therefore, even if the locking portions 31 are sandwiched with a general tool, each locking portion 31 is formed in an inclined surface, so that the general tool slides on the inclined surface of the locking portion 31. It becomes easy. For this reason, this antitheft screw 1 cannot be operated with a general tool.

  FIG. 21 shows another embodiment of the anti-theft screw nut 5. In the anti-theft nut 5 shown in FIGS. 5A and 5B, the vertical surface 51v of the locking portion 51 is formed corresponding to a part of each side of the regular pentagon (the vertical surface 51v is formed discontinuously). It has been done. The anti-theft screw nut 5 shown in FIGS. 5C and 5D exemplifies a case where the number of the locking portions 51 is one.

  As described above, as the formation patterns of the locking portions 31 and 51 of the anti-theft screw 1 and the anti-theft nut 5 and the formation patterns of the protrusions 32 and 52 are generated, the corresponding dedicated fasteners 10 are also provided. Many types occur. Therefore, when the anti-theft screw 1, the anti-theft nut 5, and the dedicated fastening jig 10 are individually provided, the specific fastening jig 10 corresponding to the specific anti-theft screw 1 and the anti-theft nut 5 is selected from many types. On the contrary, the anti-theft screw 1 and the anti-theft nut 5 corresponding to a specific dedicated fastening jig 10 must be selected, which complicates inventory management and generates a labor for searching.

  For this reason, when manufacturing the anti-theft screw 1 and the anti-theft nut 5 having the formation pattern of the specific locking portions 31 and 51 and the formation pattern of the protrusions 32 and 52, the cutting data is used. In consideration of the fact that the dedicated fastening jig 10 having the fitting portions 111 corresponding to the locking portions 31 and 51 of the specific pattern and the protrusions 32 and 52 can be easily manufactured, the locking portions 31 and 51 of the specific pattern and It is preferable that the anti-theft screw 1 and the anti-theft nut 5 having the protrusions 32 and 52 and the dedicated fastening jig 10 corresponding to the anti-theft screw 1 and the anti-theft nut 5 of the specific pattern are provided in a bundle.

  Accordingly, the consumer attaches the corresponding antitheft screw 1 and the dedicated fastening jig 10 or the corresponding antitheft nut 5 and the exclusive fastening jig 10 to the formation pattern of the locking portions 31 and 51 and the protrusions 32 and 52. Regardless of the difference in the formation pattern, it can be obtained at the same time, and the fastening work of the fastened object or the fastening release work can be performed at any time. In addition, it is possible to avoid complication of inventory management.

1 Anti-theft screw 2 Shaft 3 Head (Rotation operation part)
31 Locking portion 31v Vertical surface (first surface)
31h Horizontal surface (2nd surface)
32 Protrusion 5 Anti-theft nut 51 Locking portion 51v Vertical surface 51h Horizontal surface 52 Protrusion 10 Dedicated fastening jig 11 Tip portion 111 Fitting portion 111v Vertical surface 111h Horizontal surface 111b Boundary surface 12 Base end portion 121 Connecting portion α Angle

Claims (26)

In the anti-theft screw having a male screw or a female screw, and having a rotation operation part formed with a plurality of locking parts for rotating the male screw or the female screw,
The rotation operation unit has a ridge that gradually decreases in diameter from the bottom surface of the rotation operation unit toward the top surface,
The locking portion includes a notch portion including a first surface formed on the peripheral surface of the rotation operation portion and a second surface provided in a direction intersecting the first surface,
The anti-theft screw, wherein the first surface of one locking portion is formed so as not to be parallel to each other with respect to the first surface of one locking portion as viewed from above. In the anti-theft screw having a male screw or a female screw and having a rotation operation part in which one locking part for rotating the male screw or the female screw is formed,
The rotation operation part has a ridge that gradually decreases in diameter from the bottom surface of the rotation operation part toward the top surface, and the head shape is formed in a circle when viewed from above,
The locking portion includes a cutout portion including a first surface formed on a peripheral surface of the rotation operation portion and a second surface provided in a direction intersecting the first surface. Anti-theft screw to do.   The anti-theft screw according to claim 1 or 2, wherein an angle between the first surface and the second surface is set to 45 ° to 160 °. In the anti-theft screw having a male screw or a female screw, and having a rotation operation part formed with a plurality of locking parts for rotating the male screw or the female screw,
The rotation operation unit has a ridge that gradually decreases in diameter from the bottom surface of the rotation operation unit toward the top surface,
The locking portion is formed of inclined surfaces that are formed on the circumferential surface of the rotation operation portion and approach each other from the bottom surface of the rotation operation portion toward the top surface,
The anti-theft screw, wherein the surface of the other locking portion is formed so as not to be parallel to the surface of the one locking portion as viewed from above.   An antitheft screw in which a head is provided at one end of a shaft portion on which a male screw is formed, and an odd number of three or more locking portions are formed on the head at intervals in the circumferential direction. A hemispherical shape, a truncated cone shape, and a conical shape in which the radius of curvature gradually decreases toward the apex or the top surface, and each locking portion has an arcuate vertical surface as a first surface and an upper side when viewed from the side. Each of the sides of the regular polygon having the odd number of vertices as viewed from above, the vertical surface of each locking portion being formed by an arcuate horizontal surface as the second surface as viewed from the top, or at least arbitrary Are formed corresponding to three sides of the one side and the two sides opposite to the one side or a part thereof, and at least one locking portion is formed on a horizontal plane of the locking portion with a plane extending over the entire width direction. Anti-theft screw, characterized in that a protrusion is provided to prevent seating   An anti-theft screw in which a head is provided at one end of a shaft portion on which a male screw is formed, and an odd number of three or more locking portions are formed on the head at intervals in the circumferential direction. Alternatively, it is formed in a hemispherical shape, a truncated cone shape, or a conical shape with a radius of curvature gradually decreasing toward the top surface, and each locking portion has an arcuate vertical surface as a first surface as viewed from the side and from above. As seen from above, it is formed by an arcuate horizontal surface as viewed from above, and the vertical surface of each locking portion is approximated to the regular polygon having the odd number of vertices when viewed from above, and the two opposite sides are Each side of a polygon that is non-parallel or a part thereof or at least one arbitrary side and three sides of two sides opposite to the one side or a part thereof, and at least one locking At one end of the part, a flat surface covering the entire width direction is attached to the horizontal surface of the locking part. Anti-theft screws, wherein a protruding portion is provided to prevent.   The anti-theft screw according to claim 5 or 6, wherein one of the plurality of engaging portions when viewed from the side has a height from the bottom surface of the head in the horizontal plane of the other two or more. An anti-theft screw characterized by being higher or lower than the height from the bottom of the head of the horizontal surface of the locking part.   The anti-theft screw according to claim 5 or 6, wherein the heights of the plurality of engaging portions from the bottom surface of the horizontal plane when viewed from the side are all different.   The anti-theft screw in which a head is provided at one end of a shaft portion on which a male screw is formed, and three locking portions are formed on the head at intervals in the circumferential direction. It is formed in a hemispherical shape, a truncated cone shape, and a conical shape with a gradually decreasing radius of curvature toward each other, and each locking portion has a bow-shaped vertical surface as a first surface when viewed from the side and a second surface when viewed from above. The vertical surface of each locking portion is formed corresponding to each side or part of the equilateral triangle when viewed from above, and is formed by an arcuate horizontal plane as a surface, and at least one locking portion The anti-theft screw is characterized in that a projection for preventing seating of the plane over the entire surface in the width direction is provided on one end of the locking portion on the horizontal surface of the locking portion.   The anti-theft screw according to claim 9, wherein the height of the three locking portions from the bottom surface of the head is the same as viewed from the side, and the depth of the horizontal surfaces of the plurality of locking portions is the same. Anti-theft screw characterized by equality.   In the anti-theft nut in which a female screw penetrating vertically is formed in the central portion, and an odd number of three or more locking portions are formed on the outer peripheral surface at intervals in the circumferential direction, the outer peripheral surface faces the top surface. It is formed in a hemispherical shape and a truncated cone shape with a gradually decreasing curvature radius, and each of the locking portions has an arcuate vertical surface as a first surface when viewed from the side and an arcuate shape as the second surface when viewed from above Two sides of the regular polygon having the odd number of vertices, or a part thereof, or at least one side thereof and the vertical side of each locking portion as viewed from above. And a projection that prevents the seating of the plane across the entire width direction on the horizontal plane of the locking portion at one end of at least one locking portion. An anti-theft nut characterized in that a portion is provided.   In the anti-theft nut in which a female screw penetrating vertically is formed in the central portion, and an odd number of three or more locking portions are formed on the outer peripheral surface at intervals in the circumferential direction, the outer peripheral surface faces the top surface. It is formed in a hemispherical shape and a truncated cone shape with a gradually decreasing curvature radius, and each of the locking portions has an arcuate vertical surface as a first surface when viewed from the side and an arcuate shape as the second surface when viewed from above Each side of the polygon is formed by a horizontal plane of the polygonal shape, and when viewed from above, the vertical surface of each locking part approximates a regular polygon having the odd number of vertices, and the opposite two sides are non-parallel. Or a portion thereof or at least any one side thereof and three sides of the two sides opposite to the one side or a part thereof, and further, at one end of at least one locking portion, Protrusion that prevents seating of the plane across the entire width in the horizontal plane of the locking section Antitheft nut and which are located.   The anti-theft nut according to claim 11 or 12, wherein when viewed from the side, one of the plurality of locking portions has a height from the bottom surface of the horizontal surface of the other two or more locking portions. An anti-theft nut characterized by being higher or lower than the height from the bottom of the horizontal plane of the part.   The anti-theft nut according to claim 11 or 12, wherein the heights of the plurality of locking portions from the bottom surface of the horizontal plane are all different when viewed from the side.   In a theft prevention nut in which a female screw penetrating vertically is formed in the central portion and three locking portions are formed on the outer peripheral surface at intervals in the circumferential direction, the radius of curvature of the outer peripheral surface gradually decreases toward the top surface. And each locking portion is formed by an arcuate vertical surface as a first surface when viewed from the side and an arcuate horizontal surface as the second surface when viewed from above. Further, when viewed from above, a vertical surface of each locking portion is formed corresponding to each side of the equilateral triangle or a part thereof, and at least one locking portion is provided with one of the locking portions. A theft prevention nut, characterized in that a protrusion for preventing seating of the plane over the entire width direction is provided on the horizontal surface of the stopper.   The anti-theft nut according to claim 15, wherein the height of the three locking portions from the bottom surface of the horizontal surface is the same as viewed from the side, and the depths of the horizontal surfaces of the plurality of locking portions are equal. Anti-theft nut featuring.   The top portion of the rotation operation portion of the antitheft screw according to any one of claims 1 to 4 is accommodated at the tip portion, and a fitting portion capable of surface contact with each locking portion is formed. A special fastening jig for anti-theft screws.   The top face side of the antitheft screw according to any one of claims 5 to 8 is accommodated at the tip portion, and the vertical contact surface and the horizontal surface of each locking portion are in contact with each other while avoiding the protrusion portion. A dedicated fastening jig for an anti-theft screw, wherein an odd number of fitting portions having a vertical surface and a horizontal surface are formed, and a connecting portion comprising at least a pair of parallel surfaces is formed at the base end portion .   The top face side of the antitheft nut according to any one of claims 11 to 14 is accommodated at the tip part, and the vertical part capable of making surface contact with the vertical surface and the horizontal surface of each locking part while avoiding the protrusion part. An anti-theft nut exclusive fastening jig, wherein an odd number of fitting parts having a surface and a horizontal surface are formed, and a connecting part comprising at least a pair of parallel surfaces is formed at a base end part.   A top surface of the head of the antitheft screw according to claim 9 or 10 is accommodated at the tip, and a vertical surface capable of making surface contact with the vertical surface and the horizontal surface of each locking portion while avoiding the protrusion, and A dedicated fastening jig for an anti-theft screw, wherein three fitting parts having a horizontal surface are formed, and a connecting part comprising at least a pair of parallel surfaces is formed at a base end part.   The top surface side of the antitheft nut according to claim 15 or 16 is accommodated at the tip portion, and has a vertical surface and a horizontal surface that can make surface contact with the vertical surface and the horizontal surface of each locking portion while avoiding the protrusion. A dedicated fastening jig for an anti-theft nut, wherein three fitting parts are formed and a connecting part comprising at least a pair of parallel surfaces is formed at the base end part.   An antitheft screw set according to any one of claims 1 to 4, and a dedicated fastening jig for the antitheft screw according to claim 17.   An antitheft screw set according to any one of claims 5 to 8 and a dedicated fastening jig for the antitheft screw according to claim 18.   An anti-theft nut set comprising the anti-theft nut according to any one of claims 11 to 14 and a dedicated fastening jig for the anti-theft nut according to claim 19.   An anti-theft screw set according to claim 9 and 10 and a dedicated fastening jig for the anti-theft screw according to claim 20 are bundled.   An anti-theft nut set comprising the anti-theft nut according to claim 15 and the anti-theft nut according to claim 21.

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