WO2014129163A1 - Boulon antivol, écrou antivol et dispositif de fixation antivol - Google Patents

Boulon antivol, écrou antivol et dispositif de fixation antivol Download PDF

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Publication number
WO2014129163A1
WO2014129163A1 PCT/JP2014/000787 JP2014000787W WO2014129163A1 WO 2014129163 A1 WO2014129163 A1 WO 2014129163A1 JP 2014000787 W JP2014000787 W JP 2014000787W WO 2014129163 A1 WO2014129163 A1 WO 2014129163A1
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WO
WIPO (PCT)
Prior art keywords
operation hole
bolt
fitting material
shape
theft
Prior art date
Application number
PCT/JP2014/000787
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English (en)
Japanese (ja)
Inventor
福康 竹中
Original Assignee
Takenaka Fukuyasu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takenaka Fukuyasu filed Critical Takenaka Fukuyasu
Publication of WO2014129163A1 publication Critical patent/WO2014129163A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins

Definitions

  • the present invention relates to an anti-theft bolt provided with an anti-theft function, an anti-theft nut, and an anti-theft fastener comprising a combination of the anti-theft bolt and the anti-theft nut.
  • Patent Document 1 discloses a security nut in which an outer peripheral surface is formed in a shape that is difficult to grasp with a general tool such as a pliers or a spanner, and a plurality of recesses are formed on the outer peripheral surface.
  • Patent Document 2 discloses a security screw designed to fill an operation hole formed in the head of a screw or bolt with a fitting material.
  • Patent Document 1 The crime prevention nut described in Patent Document 1 cannot be rotated unless a dedicated tool that can be fitted into the recess is used, and thus is very effective as a simple means for suppressing a theft crime.
  • Patent Document 1 since the security nut described in Patent Document 1 can be rotated as long as the dedicated tool is available, it is not possible to suppress a theft crime by a person who has acquired the dedicated tool.
  • the horizontal cross-sectional shape of the fitting material is substantially the same as the size of the opening end shape of the operation hole, and the fitting material is It is conceivable to take measures to support the operation hole on the inner side surface or the inner side side thereof.
  • the size of the fitting material is designed to be a size that can be supported by the inner side surface or the inner side of the operation hole, in order to fit the fitting material into the operation hole, the phase of the fitting material, If the positioning operation for matching the phase of the operation hole with a considerable accuracy is not performed, the fitting material cannot be pushed into the operation hole, and the fastening operation becomes very difficult.
  • the present invention has been completed in view of the technical problem, and in addition to the anti-theft function, a novel anti-theft bolt capable of facilitating the fastening operation, the anti-theft nut, and the anti-theft
  • An object of the present invention is to provide an antitheft fastener comprising a combination of a bolt for use and an antitheft nut.
  • a first anti-theft bolt of the present invention includes a head, a shaft hanging from a seating surface of the head, the head or the shaft, and the shaft A fastening tool having a tip shape that can be inserted into the operation hole, and a bolt body provided with an operation hole provided on the rotation center line of the portion, and a fitting material fitted into the operation hole. Then, after the bolt body is rotated in the fastening direction and the bolt body is fastened to the fastened member, the operation hole is filled with the fitting material, so that the fastening dedicated tool becomes the operation hole.
  • each outer side of the guide portion is along each inner side of the corresponding operation hole so that the cap portion can be guided to a phase that can be pushed into the operation hole.
  • the guide portion is a column having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole (hereinafter referred to as “the first bolt of the present invention”).
  • a gap generated between the outer surface of the guide portion and the inner surface of the operation hole is 0.05 mm or more, and What was designed so that it may become in the range of 0.2 mm or less becomes a preferable aspect.
  • a gap generated between the outer side of the guide part and the inner side of the operation hole is 0.05 mm or more, and What was designed so that it may become in the range of 0.2 mm or less becomes a preferable aspect.
  • the cap portion has a horizontal sectional shape that is the same shape as the opening end shape of the operation hole.
  • the fitting material is preferably made of zinc or a zinc alloy as a material.
  • the fitting material has a plated surface, and a step existing at the boundary between the cap portion and the guide portion is filled with the plating. It becomes.
  • a hollow is provided on the center of gravity of the top surface of the fitting material.
  • the second anti-theft bolt of the present invention includes a head, a shaft portion hanging from the seating surface of the head, and an operation provided on the rotation center line of the shaft portion in the head or the shaft portion.
  • a bolt main body having a hole, and a fitting material fitted into the operation hole, and the bolt main body in the fastening direction in a dedicated fastening tool having a tip shape that can be inserted into the operation hole. After the bolt body is fastened to the fastened member after being rotated, the operation hole is filled with the fitting material, so that the exclusive fastening tool cannot be inserted into the operation hole.
  • a cap portion that is supported by an inner side surface or an inner side of the operation hole when the fitting material is fitted into the operation hole; and a guide portion that is disposed on the lower surface side of the cap portion; Equipped with When the fitting material is fitted into the operation hole, at least two of the outer surfaces of the guide portion inserted prior to the cap portion are two of the inner surfaces of the operation hole. Or at least three sides of each outer side of the guide part along three sides of the inner side of the operation hole, so that the cap part is guided to a phase where the cap part can be pushed into the operation hole.
  • the guide portion has a shape in which one or a plurality of outer sides are dropped from a virtual column having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole, or one from the virtual column. It is characterized by having a shape in which a plurality of outer surfaces are retreated toward the center (hereinafter referred to as “second bolt of the present invention”).
  • the third anti-theft bolt of the present invention comprises: a head, a shaft hanging from the seating surface of the head, and an operation provided on the rotation center line of the shaft in the head or the shaft.
  • a bolt main body having a hole, and a fitting material fitted into the operation hole, and the bolt main body in the fastening direction in a dedicated fastening tool having a tip shape that can be inserted into the operation hole. After the bolt body is fastened to the fastened member after being rotated, the operation hole is filled with the fitting material, so that the exclusive fastening tool cannot be inserted into the operation hole.
  • a cap portion that is supported by an inner side surface or an inner side of the operation hole when the fitting material is fitted into the operation hole; and a guide portion that is disposed on the lower surface side of the cap portion; Equipped with When the fitting material is fitted into the operation hole, each outer side surface of the guide portion inserted in advance of the cap portion gradually approaches each inner side surface of the corresponding operation hole, and The guide portions are guided so that each outer side of the guide portion gradually approaches each inner side of the corresponding operation hole, and thus the cap portion is guided to a phase that can be pushed into the operation hole.
  • a cone having a bottom shape similar to or slightly smaller than the shape of the opening of the operation hole or a truncated cone hereinafter referred to as “the third bolt of the present invention”).
  • the fourth anti-theft bolt of the present invention includes a head, a shaft portion depending from the seating surface of the head, and an operation provided on the rotation center line of the shaft portion in the head or the shaft portion.
  • a bolt main body having a hole, and a fitting material fitted into the operation hole, and the bolt main body in the fastening direction in a dedicated fastening tool having a tip shape that can be inserted into the operation hole. After the bolt body is fastened to the fastened member after being rotated, the operation hole is filled with the fitting material, so that the exclusive fastening tool cannot be inserted into the operation hole.
  • a cap portion that is supported by an inner side surface or an inner side of the operation hole when the fitting material is fitted into the operation hole; and a guide portion that is disposed on the lower surface side of the cap portion; Equipped with When the fitting material is fitted into the operation hole, at least two of the outer surfaces of the guide portion inserted prior to the cap portion are respectively two of the inner side surfaces of the operation hole. Gradually approach the surface, or at least three sides of each outer side of the guide part gradually approach three sides of each inner side of the operation hole, so that the cap part performs the operation. From a virtual cone or a virtual frustum having a bottom surface shape similar to or slightly smaller than the opening end shape of the operation hole so that the guide portion is guided to a phase that can be pushed into the hole.
  • invention No. 4 Referred to as ".).
  • the anti-theft nut of the present invention is an anti-theft nut that can be screwed into the shaft portion of the first to fourth bolts of the present invention, and a seat surface and a top portion that is on the opposite side of the seat surface; It comprises a peripheral wall surface that is tapered to gradually reduce the horizontal cross-sectional area from the seat surface toward the top, and a female screw portion that penetrates from the seat surface toward the top, and during fastening operation
  • One or more protrusions are provided on the seat surface in order to prevent the bolt from rotating in synchronization with the rotation of the bolt when rotating the bolt (hereinafter referred to as “the book”).
  • the book hereinafter referred to as “the book”.
  • Invented nut ").
  • a preferred embodiment is such that the height of the protrusion is in the range of 0.1 mm or more and 1 mm or less.
  • a preferred embodiment is one in which the outer diameter of the protrusion is in the range of 0.1 to 1 mm.
  • the anti-theft fastener of the present invention comprises the first to fourth bolts of the present invention and the nut of the present invention, and the anti-theft fastener (hereinafter referred to as “the present fastener”). ").
  • the fastening operation can be facilitated in addition to the anti-theft function.
  • FIG. 1 (a) is a perspective view showing a first bolt of the present invention according to Embodiment 1
  • FIG. 1 (b) is a cross-sectional view showing a bolt body used in the first bolt of the present invention.
  • FIG.1 (c) is a top view which shows the operation hole provided in the said bolt main body
  • FIG.1 (d) is a side view which shows the fitting material used in the said 1st bolt of this invention.
  • 2A is a perspective view showing a process of fastening the first bolt of the present invention
  • FIGS. 2B and 2C are sectional views showing a process of fitting a fitting material into the bolt body. is there.
  • FIG. 3 (a) is a perspective view showing another fitting material used in the first bolt of the present invention
  • FIG. 3 (a) is a perspective view showing another fitting material used in the first bolt of the present invention.
  • FIG. 3 (b) shows the fitting material in the operation hole of the bolt body shown in a sectional view. It is sectional drawing which shows the state fitted.
  • FIG. 4A is a perspective view showing the first bolt of the present invention further comprising a washer
  • FIG. 3B is a cross-sectional view showing the washer used in the first bolt of the present invention.
  • FIG. 4C is a sectional view showing a state in which the first bolt of the present invention is fastened through the washer.
  • FIG. 5 (a) is a perspective view showing the first bolt of the present invention according to Embodiment 2
  • FIG. 5 (b) is a cross-sectional view showing a fitting material used in the first bolt of the present invention.
  • FIG. 6 is a perspective view showing the removing operation of the first bolt of the present invention.
  • 7 (a) is a perspective view showing the second bolt of the present invention according to Embodiment 3
  • FIG. 7 (b) is a side view showing a fitting material used for the second bolt of the present invention.
  • 7 (c) is a bottom view showing the fitting material.
  • FIGS. 8A to 8C are bottom views showing examples of other fitting materials used for the second bolt of the present invention.
  • FIG. 9A is a perspective view showing a third bolt of the present invention according to Embodiment 4
  • FIG. 9B is a side view showing a fitting material used for the third bolt of the present invention.
  • FIG. 10 (a) is a perspective view showing a fourth bolt of the present invention according to Embodiment 5, and FIG.
  • FIG. 10 (b) is a bottom view showing a fitting material used for the fourth bolt of the present invention.
  • FIG. 11A is a perspective view showing the nut of the present invention
  • FIG. 11B is a side view showing the nut of the present invention.
  • 12A and 12B are cross-sectional views showing a process of fastening the nut of the present invention and the first bolt of the present invention.
  • FIG. 1 shows a first bolt 101 of the present invention according to Embodiment 1
  • FIG. 2 shows a fastening process of the first bolt 101 of the present invention.
  • the first bolt 101 of the present invention includes a bolt body 2 and a fitting material 4.
  • the bolt body 2 includes a head portion 21 and a shaft portion 22.
  • the head 21 has a seating surface (hereinafter referred to as “bolt seating surface”) 211, an upper surface (hereinafter referred to as “bolt upper surface”) 212 existing on the opposite side of the bolt seating surface 211, and the bolt.
  • the bolt seat surface 211 in the head 21 has a circular outer edge (diameter: 16 mm).
  • the bolt seat surface 211 is, for example, a surface that contacts the one member P when the one member P is fixed to the other member Q by the first bolt 101 of the present invention (see FIG. 2). ).
  • the bolt upper surface 212 also has a circular outer edge (diameter: 12.5 mm) and is in parallel with the bolt seat surface 211.
  • the head 21 has an angle ( ⁇ 1) formed between opposing buses of about 55 degrees, and the height (from the bolt seat surface 211 to the bolt upper surface 212 ( H1) has a substantially frustoconical overall shape of 3.7 mm.
  • the shaft portion 22 passes through the centers of both the bolt seat surface 211 and the bolt upper surface 212 and hangs down from the bolt seat surface 211 of the head portion 21 with respect to the head portion 21. Are connected.
  • the shaft portion 22 is provided with a male screw 221.
  • the operation hole 214 is arranged on the rotation center line of the shaft portion 22 and is opened on the bolt upper surface 212.
  • the operation hole 214 has a regular hexagonal open end shape in which the distance (L1) between opposing sides is 4.1 mm, and the depth (D1) is 2.5 mm (see FIG. 1 (b) and (c)).
  • the fitting material 4 includes a cap part 41 and a guide part 42.
  • the height (H2) of the fitting material 4 is the same as or slightly higher than the depth (D1) of the operation hole 214 (preferably within a range of 1.1 times or more and 1.5 times or less). Is set to be In this embodiment, the height (H2) of the fitting material 4 is 3 mm.
  • the cap portion 41 has a prismatic overall shape.
  • the cap portion 41 has a horizontal cross-sectional shape that is the same shape as the opening end shape of the operation hole 214. Further, the dimension of the horizontal section of the cap portion 41 is substantially the same as the dimension of the opening end of the operation hole 214.
  • the horizontal cross-sectional shape of the cap portion 41 is a regular hexagon in which the distance (L2) between opposing sides is 4.05 mm. The height (H3) of the cap portion 41 is 1.5 mm (see FIG. 1 (d)).
  • the guide portion 42 is disposed on the lower surface side of the cap portion 41. One bottom surface of the guide portion 42 is joined to the lower surface of the cap portion 41.
  • the guide portion 42 is a column having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214.
  • the phase of each outer side of the guide part 42 matches the phase of each outer side of the corresponding cap part 41.
  • the guide portion 42 is arranged at a position where the center of gravity of the horizontal cross-sectional shape coincides with the center of gravity of the horizontal cross-sectional shape of the cap portion 41.
  • the horizontal cross-sectional shape of the guide portion 42 is a regular hexagon in which the distance (L3) between opposing sides is 3.9 mm.
  • the height (H4) of the guide portion 42 is 1.5 mm (see FIG. 1 (d)).
  • a female screw that can be screwed with the male screw 221 provided in the shaft portion 22 is provided on the inner wall thereof. Therefore, if the head portion 21 of the bolt body 2 is rotationally operated in the fastening direction while grasping the head 21 of the bolt body 2 with a finger in a state where the tip of the shaft portion 22 is applied to the opening end of the hole Q1, the bolt body 2 is The male screw 221 and the female screw provided in the hole Q1 are screwed together.
  • the bolt body 2 is further rotated using a dedicated fastening tool (in this embodiment, a kind of a square wrench called “hexagon spanner”) 6, and thus the bolt body 2.
  • a dedicated fastening tool in this embodiment, a kind of a square wrench called “hexagon spanner”
  • Hexagon spanner a kind of a square wrench
  • the fitting material 4 is fitted into the operation hole 214.
  • the guide portion 42 is inserted into the operation hole 214 in advance of the cap portion 41 (see FIG. 2B).
  • the guide portion 42 is a column having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214, the guide portion 42 can be smoothly inserted into the operation hole 214. it can.
  • each outer side is along each inner side of the corresponding operation hole 214, and each inner side of each of the operation holes 214 to which each outer side surface corresponds. Since it is along the side surface, it is inserted and arranged in the operation hole 214 with almost no freedom in the rotational direction. And since the phase of each outer side of the guide part 42 is in agreement with the phase of each outer side of the corresponding cap part 41, when the guide part 42 is fitted in the operation hole 214, the cap The portion 41 is guided and positioned to a phase that can be pushed into the operation hole 214.
  • the exposed end surface of the fitting material 4 is struck with a tool such as a hammer so that the guide portion 42 faces the operation hole 214.
  • the cap portion 41 is pushed in (see FIG. 2C).
  • the cap section 41 Since the cap section 41 has a horizontal cross-sectional dimension that is substantially the same as the opening end of the operation hole 214, the cap section 41 pushed into the operation hole 214 has It is supported by the inner side and the inner side and stays in the operation hole 214 in a state where the opening end of the operation hole 214 is closed.
  • the fastening exclusive tool 6 used for rotating the bolt main body 2 in the fastening direction is a generally distributed general tool such as a square bar wrench.
  • a tool such as a hammer is used to fill the fitting material 4 in the operation hole 214.
  • These tools required for the fastening operation are easily available, and no special technique is required for the fastening operation using these tools.
  • the guide portion 42 provided on the fitting material 4 makes it very easy to position the cap portion 41 with respect to the operation hole 214.
  • the first bolt 101 of the present invention can be fastened by a very simple operation.
  • cap portion 41 in the fitting material 4 is supported by the inner side and the inner side surface of the operation hole 214 and remains in the operation hole 214 in a state where the opening end of the operation hole 214 is closed. It is also difficult to take out the fitting material 4 from the operation hole 214.
  • the opening end shape of the operation hole 214 is a regular hexagon, but the opening end shape of the operation hole 214 is not limited to this. Moreover, it is not limited to a regular polygon.
  • the opening end shape of the operation hole 214 may be various shapes such as a triangle, a quadrangle, a pentagon, a hexagon, an ellipse, a star, or a heart shape.
  • the shape of the opening end of the operation hole 214 is any one of a regular triangle, a square, a regular pentagon, and a regular hexagon. It is preferable to do.
  • the operation hole 214 is provided to the head 21 so as to open at the bolt upper surface 212, but the operation hole 214 is opened at the lower end of the shaft portion 22. In this manner, the shaft portion 22 may be provided.
  • the bottom surface of the operation hole 214 is a flat surface.
  • the bottom surface of the operation hole 214 is not limited to such a flat surface.
  • the operation hole 214 is depressed in a funnel shape. Also good.
  • the inner diameter of the opening end of the operation hole 214 (in this embodiment, the diameter of a circle circumscribing the opening end of the operation hole 214) is set to improve the operability of the rotating operation by the fastening tool 6. It is preferable to be within a range of 3 mm or more and 6 mm or less. Further, in order to secure a sufficient insertion depth of the fitting material 4, the depth (D1) of the operation hole 214 is 2 mm or more (more preferably, within a range of 2 mm or more and 5 mm or less). Is preferred.
  • the shape of the cap portion 41 in the fitting material 4 is a column having the same horizontal cross-sectional shape as the shape of the opening end of the operation hole 214, but the shape of the cap portion 41 is not necessarily the operation.
  • the column body need not have the same horizontal cross-sectional shape as the opening end shape of the hole 214.
  • the shape of the cap portion 41 is such that when the fitting material 4 is fitted into the operation hole 214, the inner side surface or inner side of the cap portion is supported by the inner side or inner side surface of the operation hole 214, A shape that can stay in the operation hole 214 may be used.
  • Examples of the shape of the cap portion 41 include a column having substantially the same horizontal cross-sectional shape as the opening end shape of the operation hole 214, and a horizontal shape with one or more corners dropped from the opening end shape of the operation hole 214.
  • Examples include a column having a cross-sectional shape, and a column having a horizontal cross-sectional shape in which one or more sides are retreated toward the center from the opening end shape of the operation hole 214.
  • a gap generated in a portion supported by the inner surface or the inner side of the operation hole 214 is less than 0.05 mm (more Preferably, it is designed to be 0 mm or more and 0.03 mm or less.
  • the gap generated between the operation hole 214 and the inner surface is less than 0.05 mm (more preferably, 0 mm or more and 0.03 mm or less).
  • a gap generated between the outer side of the cap portion 41 and the inner side of the operation hole 214 is also less than 0.05 mm (more preferably, 0 mm or more and 0.03 mm or less). It is preferable to design
  • the height (H3) of the cap portion 41 is 0.5 mm or more (more preferably 1 mm or more and 2 mm or less) in order to ensure a sufficient insertion depth of the cap portion 41 with respect to the operation hole 214. Within the range).
  • the guide portion 42 when the fitting material 4 is fitted into the operation hole 214, the guide portion 42 inserted in advance is smoothly inserted into the operation hole 214, and is inserted. Further, when the fitting material 4 is embedded in the operation hole 214 so that each outer side of the guide part 42 can be along each inner side of the operation hole 214, the outer surface of the guide part 42 and the The gap generated between the inner surface of the operation hole 214 is in the range of 0.05 mm or more and 0.2 mm or less (more preferably in the range of 0.075 mm or more and 0.15 mm or less). It is preferable to design as follows.
  • the gap generated between the outer side of the guide portion 42 and the inner side of the operation hole 214 is also within a range of 0.05 mm or more and 0.2 mm or less (more preferably (more preferably, It is preferable to design within a range of 0.075 mm or more and 0.15 mm or less.
  • the height (H4) of the guide portion 42 is preferably 0.5 mm or more (more preferably within a range of 1 mm or more and 2 mm or less).
  • the material of the fitting material 4 is not particularly limited, but it is preferable to form a metal as a material.
  • the fitting material 4 formed of zinc or zinc alloy as a raw material exhibits appropriate softness and stickiness when pushed into the operation hole 214 and can be pushed into the operation hole 214 more easily. Further, the fitting material 4 formed of zinc or zinc alloy as a raw material can stay in the operation hole 214 more reliably.
  • the fitting material 4 preferably has a plated surface.
  • the fitting material having the plated surface is not easily rusted, and a step existing at the boundary between the cap portion 41 and the guide portion 42 is filled by plating, so that a gentle inclined surface is generated in the step.
  • the fitting material 4 having a plated surface can be more easily pushed into the operation hole 214.
  • the plating treatment a plating treatment with nickel is preferable.
  • the fitting material 4 is preferably processed so that the upper surface on the cap portion 41 side gradually rises toward the center as shown in FIG. . If the upper surface on the cap portion 41 side is gently raised toward the center, it is more difficult to sandwich the fitting material 4 embedded in the operation hole 214 with a tool such as pliers, and the crime prevention effect is improved. (See FIG. 3B).
  • the whole shape of the head 21 of the said bolt main body 2 is made into the substantially truncated cone shape
  • the whole shape of the head 21 of the said bolt main body 2 is substantially hemispherical besides a substantially truncated cone shape.
  • substantially frustoconical and substantially hemispherical refer to the inclined surface that gradually reduces the horizontal sectional area from the bolt seat surface 211 toward the circular bolt upper surface 212.
  • the shape which comprises the bolt surrounding wall 213 is meant.
  • substantially cylindrical shape means a shape in which the outer edge shapes of the bolt seat surface 211 and the bolt upper surface 212 are congruent and circular.
  • the height (H1) of the head 21 of the bolt body 2 is not particularly limited, but is 10 mm or less (more preferably 2 mm or more and 10 mm or less) so that it is more difficult to grip with a general tool such as pliers or a spanner.
  • the following range is preferable.
  • the bolt body 2 is opposed so as to be more difficult to grasp with a general tool such as a pliers or a spanner.
  • the angle ( ⁇ 1) formed by the buses is within a range of 45 degrees or more and 120 degrees or less.
  • the diameter of the bolt seat surface 211 is preferably in the range of 5 mm or more and 30 mm or less.
  • the diameter of the bolt seat surface 211 increases.
  • the head 21 covers a part of the display of a license plate of an automobile and The part may be covered up.
  • the diameter of the bolt seat surface 211 is preferably within a range of 5 mm or more and 20 mm or less.
  • the angle ( ⁇ 1) formed by the opposing busbars is within a range of 45 degrees or more and 60 degrees or less.
  • the bolt body 2 may be formed into a countersunk screw shape and combined with the washer 5 to have a shape that is difficult to grasp with a general tool such as a pliers or a spanner.
  • the washer 5 has an annular shape.
  • the outer peripheral wall 51 of the washer 5 has an inclined surface shape that increases in diameter from the upper part to the lower part in the drawing, and the inner peripheral wall 52 has an inclined surface shape that gradually decreases in diameter from the upper part to the lower part in the drawing. (See FIG. 4B).
  • the inclination angle (taper angle) of the inner peripheral wall 52 is the same as the inclination angle (taper angle) of the bolt peripheral wall 213 of the head 21 in the bolt, and the bolt body 2 is interposed via the washer 5.
  • the bolt peripheral wall 213 is designed to fit in the inner peripheral wall 52 of the washer 5 (see FIG. 4C).
  • the said outer peripheral wall 51 of the said washer 5 is made into the inclined surface shape which increases a diameter toward the lower part from the upper part in a figure, the said bolt main body 2 fastened through the said washer 5 interposing,
  • the inclined surface of the outer peripheral wall 51 around the head 21 makes it difficult to grip with a general tool such as a pliers or a spanner. Further, even if the washer 5 is forcibly grasped and rotated, the rotational force is hardly transmitted to the bolt body 2, so that the crime prevention effect is further improved.
  • the bolt upper surface 212 is used.
  • the upper end of the inner peripheral wall 52 of the washer 5 is preferably designed to be higher by 0.1 mm or more (preferably within a range of 0.5 mm or more and 2 mm or less).
  • the depth dimension (D2) of the portion surrounded by the inner peripheral wall 52 in the washer 5 is designed in this way, the position where the bolt upper surface 212 exists when the bolt body 2 is fastened with the washer 5 interposed therebetween. Accordingly, the upper end of the inner peripheral wall 51 of the washer 5 protrudes. Thereby, it becomes difficult to insert a tool such as a flat-blade screwdriver between the inner peripheral wall 52 of the washer 5 and the head portion 21 of the bolt main body 2, and the crime prevention effect is further improved.
  • the angle ( ⁇ 2) formed by the opposing buses on the outer peripheral wall 51 of the washer 5 is within a range of 45 degrees or more and 120 degrees or less (more preferably 45 degrees or more and 60 degrees or less). Within the range).
  • the diameter of the outer edge of the seating surface of the washer 5 is preferably in the range of 5 mm or more and 30 mm (more preferably in the range of 5 mm or more and 20 mm or less).
  • FIG. 5 shows the first bolt 101 of the present invention according to the second embodiment.
  • the first bolt 101 of the present invention includes a bolt body 2 and a fitting material 4.
  • the bolt body 2 has the same structure as that described in the first embodiment.
  • the fitting material 4 is the same as that of the embodiment except that the upper surface on the cap portion 41 side is processed so that the upper surface gently rises toward the center portion, and the hollow hole 43 is provided at the center of gravity of the upper surface.
  • 1 has the same structure as that described in FIG. 1 (see FIG. 5B).
  • the first bolt 101 of the present invention is fastened by the same procedure as that described in the first embodiment.
  • the first bolt 101 of the present invention is compulsory. Must be removed.
  • the fitting material 4 embedded in the operation hole 214 is broken and removed with a cutting tool H such as a drill.
  • the dedicated fastening tool 6 adopts means for rotating the fastening in the direction of loosening.
  • the operation hole 214 is broken, and then the operation hole 214 is broken.
  • the dedicated fastening tool 6 may be in a state where it cannot be rotated.
  • the cutting edge Ha becomes easy to slip, and the work concerned is performed. It will be very difficult.
  • the fitting material 4 is provided with a dent hole 43 at the center of gravity of the end surface on the cap part 41 side, the dent hole 43 is formed as shown in FIG. Since the guide is applied to the cutting edge Ha of the tool H, the cutting edge Ha of the cutting tool H can be suitably prevented from slipping.
  • the depth (K1) of the hollow 43 is preferably in the range of 0.1 mm or more and 1 mm or less (more preferably in the range of 0.2 mm or more and 0.5 mm or less).
  • the diameter (K2) of the opening end of the hollow hole 43 is in the range of 0.1 mm or more and 1 mm or less (more preferably in the range of 0.2 mm or more and 0.5 mm or less). Is preferred.
  • FIG. 7 shows the second bolt 102 of the present invention according to the third embodiment.
  • the second bolt 102 of the present invention includes a bolt body 2 and a fitting material 4.
  • the bolt body 2 has the same structure as that described in the first embodiment.
  • the fitting material 4 includes a cap part 41 and a guide part 42 (see FIG. 7B).
  • the cap portion 41 has a prismatic overall shape.
  • the cap portion 41 has a horizontal cross-sectional shape that is the same shape as the opening end shape of the operation hole 214. Further, the dimension of the horizontal section of the cap portion 41 is substantially the same as the dimension of the opening end of the operation hole 214.
  • the guide portion 42 is disposed on the lower surface side of the cap portion 41. As shown in FIG. 7C, the guide portion 42 has a shape in which one outer side is dropped from a virtual column body 42 a having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214. Have Further, the guide part 42 is arranged at a position where the phase of each outer side of the virtual columnar body 42a matches the phase of each outer side of the corresponding cap part 41. The guide portion 42 is disposed at a position where the center of gravity of the horizontal cross-sectional shape of the virtual column body 42a coincides with the center of gravity of the horizontal cross-sectional shape of the cap portion 41.
  • ⁇ Fastening (tightening) operation of the second bolt 102 of the present invention The fastening operation of the second bolt 102 of the present invention is performed by the same procedure as that described in the first embodiment. Further, when fitting the fitting material 4 into the operation hole 214 of the bolt body 2 that has been fastened, the guide portion 42 is first inserted in advance of the cap portion 41 as in the first embodiment. To do.
  • the guide portion 42 has a shape in which one corner is dropped from the virtual column body 42a having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214.
  • the operation hole 214 can be smoothly inserted.
  • the corners are dropped from the three outer sides X0, Y0, Z0 remaining from the virtual column body 42a and the virtual polygon 42.
  • the two newly generated outer sides X1, Y1 are respectively along the five sides of the inner sides of the operation hole 214, and the four outer sides A, B, C, remaining from the virtual polygon 42a. Since D is along four of the six inner side surfaces of the operation hole 214, it is inserted into the operation hole 214 with almost no freedom in the rotational direction.
  • the said guide part 42 is distribute
  • the cap portion 41 is guided and positioned to a phase that can be pushed into the operation hole 214.
  • the cap portion 41 By positioning the cap portion 41 by inserting and arranging the guide portion 42 in the operation hole 214, the exposed end surface of the fitting material 4 is hit with a tool such as a hammer to enter the operation hole 214.
  • the cap part 41 is pushed toward the front.
  • the corner of the guide portion 42 is dropped from the virtual column body 42a having a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214. Therefore, the horizontal cross-sectional shape of the guide portion 42 is different from the horizontal cross-sectional shape of the cap portion 41.
  • FIG. 8 lists other modes of the fitting material 4 in the second bolt 102 of the present invention.
  • the fitting material 4 shown in FIG. 8A has a virtual column body 42a in which the guide portion 42 arranged on the lower surface side of the cap portion 41 has a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214.
  • the shape is formed by dropping the two outer sides facing each other.
  • the four outer sides W1, X1, Y1, and Z1 newly generated by dropping the outer side of the virtual columnar body 42a are respectively used for the operation.
  • the two side surfaces A and B remaining from the virtual column body 42 a in the guide portion 42 are along two inner side surfaces of the inner side surfaces of the operation hole 214. Accordingly, the guide portion 42 is inserted and disposed in the operation hole 214 with almost no freedom in the rotational direction.
  • the fitting material 4 shown in FIG. 8B has a virtual column body 42a in which the guide portion 42 arranged on the lower surface side of the cap portion 41 has a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214. Therefore, the shape is formed by dropping the three outer sides.
  • the fitting material 4 shown in FIG. 8C has a virtual columnar body 42a in which the guide portion 42 arranged on the lower surface side of the cap portion 41 has a similar horizontal sectional shape slightly smaller than the opening end shape of the operation hole 214. From the above, it has a shape in which the six side surfaces are retreated toward the center.
  • the cap portion 41 is inserted into the operation hole 214 when the fitting member 4 is inserted into the operation hole 214 with the guide portion 42 in front. You are guided to a phase that can be pushed.
  • the cut line is not limited to a straight line when dropping the outer side of the virtual column body 42a or retracting the outer side toward the center, and the cut line is curved, bent, You may be hitting.
  • FIG. 9 shows the third bolt 103 of the present invention according to the fourth embodiment.
  • the third bolt 103 of the present invention includes a bolt body 2 and a fitting material 4.
  • the bolt body 2 has the same structure as that described in the first embodiment.
  • the fitting material 4 includes a cap portion 41 and a guide portion 42 (see FIG. 9B).
  • the cap portion 41 has a prismatic overall shape.
  • the cap portion 41 has a horizontal cross-sectional shape that is the same shape as the opening end shape of the operation hole 214. Further, the dimension of the horizontal section of the cap portion 41 is substantially the same as the dimension of the opening end of the operation hole 214.
  • the guide portion 42 is disposed on the lower surface side of the cap portion 41.
  • the guide portion 42 is a frustum having a bottom shape that is the same as or slightly smaller than the opening end shape of the operation hole 214. Further, the phase of each corner of the bottom surface of the guide portion 42 is matched with the phase of each corner of the horizontal cross-sectional shape of the corresponding cap portion 41. Further, the center of gravity of the horizontal cross-sectional shape of the cap portion 41 and the center of gravity of the horizontal cross-sectional shape of the guide portion 42 coincide with each other.
  • ⁇ Fastening (tightening) operation of the third bolt 103 of the present invention The fastening operation of the third bolt 103 of the present invention is performed in the same procedure as that described in the first embodiment. Further, when fitting the fitting material 4 into the operation hole 214 of the bolt body 2 that has been fastened, the guide portion 42 is first inserted in advance of the cap portion 41 as in the first embodiment. To do.
  • the guide portion 42 is a truncated cone having a shape that tapers from the larger bottom surface to the other bottom surface, the guide portion 42 can be more smoothly inserted into the operation hole 214.
  • each outer side gradually approaches each inner side of the operation hole 214, and each outer side surface corresponds to the operation hole 214. Accordingly, the degree of freedom in the rotational direction gradually disappears, and finally, the degree of freedom in the rotational direction is almost eliminated, and is inserted into the operation hole 214. Since each corner of the bottom surface of the guide portion 42 matches the phase of each corner of the horizontal cross-sectional shape of the corresponding cap portion 41, when the guide portion 42 is inserted and disposed in the operation hole 214. The cap portion 41 is guided and positioned to a phase that can be pushed into the operation hole 214.
  • the cap portion 41 After the cap portion 41 is positioned by inserting and arranging the guide portion 42 in the operation hole 214, the end surface of the fitting material 4 is struck with a tool H such as a hammer to enter the operation hole 214. The cap part 41 is pushed in.
  • a tool H such as a hammer
  • the larger one of the guide part 42 is less than 0.2 mm (more preferably, 0 mm or more and 0.15 mm or less).
  • the dimension (L5) of the other bottom surface of the guide portion 42 is not particularly limited as long as it is smaller than the dimension (L4) of the larger bottom surface.
  • the guide portion 42 in the third bolt 103 of the present invention may be a cone having no other bottom surface.
  • the dimension (L5) of the other bottom surface of the guide portion 42 when the fitting material 4 is embedded in the operation hole 214, the other bottom surface of the guide portion 42 and the inner wall surface of the operation hole 214 are used. It is preferable to design so that the gap generated between the two is 0.2 mm or more (more preferably, 0.2 mm or more and 0.5 mm or less).
  • FIG. 10 shows the fourth bolt 104 of the present invention according to the fifth embodiment.
  • the fourth bolt 104 of the present invention includes a bolt body 2 and a fitting material 4.
  • the bolt body 2 has the same structure as that described in the first embodiment.
  • the fitting material 4 includes a cap part 41 and a guide part 42.
  • the cap portion 41 has a prismatic overall shape.
  • the cap portion 41 has the same horizontal cross-sectional shape as the opening end shape of the operation hole 214. Further, the dimension of the horizontal section of the cap portion 41 is substantially the same as the dimension of the opening end of the operation hole 214.
  • the guide portion 42 is disposed on the lower surface side of the cap portion 41.
  • the guide portion 42 has a shape in which one outer side is dropped from a virtual frustum body 42b having a bottom surface shape similar to or slightly smaller than the horizontal sectional shape of the operation hole 214 (FIG. 10B). )reference). Further, the guide part 42 is arranged in a state in which the phase of each corner of the bottom surface of the virtual frustum body 42b is matched with the phase of each corner of the horizontal cross-sectional shape of the corresponding cap part 41. As a result, the center of gravity of the horizontal cross-sectional shape of the cap portion 41 and the center of gravity of the virtual frustum 42b coincide.
  • ⁇ Fastening (tightening) work of the fourth bolt 104 of the present invention The fastening operation of the fourth bolt 104 of the present invention is performed in the same procedure as that described in the first embodiment. Further, when fitting the fitting material 4 into the operation hole 214 of the bolt body 2 that has been fastened, the guide portion 42 is first inserted in advance of the cap portion 41 as in the first embodiment. To do.
  • the guide portion 42 since the guide portion 42 has a shape in which one outer side is dropped from the virtual frustum body 42b, it can be more smoothly inserted into the operation hole 214.
  • the corners are dropped from the three outer sides X0, Y0, Z0 remaining from the virtual frustum body 42b and the virtual frustum body 42b.
  • Each of the two outer sides X1 and Y1 newly generated along the direction gradually approaches the five sides of the inner sides of the operation hole 214, and each of the outer sides remaining from the virtual frustum 42b. Since each of the side surfaces A, B, C, and D approaches the four inner surfaces of the operation hole 214, the degree of freedom in the rotational direction gradually disappears, and finally the degree of freedom in the rotational direction is almost zero. In a state of being lost, the operation hole 214 is inserted and arranged.
  • the said guide part 42 is distribute
  • the cap portion 41 By positioning the cap portion 41 by inserting and arranging the guide portion 42 in the operation hole 214, the exposed end surface of the fitting material 4 is hit with a tool such as a hammer to enter the operation hole 214.
  • the cap part 41 is pushed toward the front.
  • FIG. 11 shows the nut 3 of the present invention according to the sixth embodiment.
  • the nut 3 of the present invention can be screwed onto the shaft portion 22 of the first to fourth bolts 101 to 104 of the present invention.
  • the fastener of the present invention is a combination of any one of the first to fourth bolts 101 to 104 of the present invention and the nut 3 of the present invention.
  • the nut 3 of the present invention has a seating surface (hereinafter referred to as “nut seating surface”) 31, a top portion (hereinafter referred to as “nut top portion”) 32 existing on the opposite side of the nut seating surface 31, and the above.
  • a peripheral wall 33 (hereinafter referred to as “nut peripheral wall”) 33 that gradually decreases in diameter from the nut seat surface 31 toward the nut top portion 32, and from the nut seat surface 31 toward the nut top portion 32.
  • a female thread portion 34 penetrating therethrough.
  • the nut seat surface 31 of the nut 3 has a circular outer edge (diameter: about 18 mm).
  • the nut top portion 32 also has a circular outer edge (diameter: about 10 mm), and is in a parallel relationship with the nut seat surface 31.
  • the nut 3 has a substantially truncated cone in which the angle ( ⁇ 3) formed between the opposing busbars is about 60 degrees, and the height (H5) from the nut seat surface 31 to the nut top 32 is about 6 mm. (See FIG. 11B).
  • the female threaded portion 34 is provided so that its axial center passes through the centers of both the nut seat surface 31 and the nut top portion 32 and is perpendicular to both the nut seat surface 31 and the nut top portion 32. It has been.
  • the nut seat surface 31 is provided with a plurality of protrusions 35.
  • the protrusion 31 has a cylindrical shape with an outer diameter of about 0.8 mm and a height of about 0.5 mm, and 90 degrees at four positions around the open end of the female screw portion 34. It is provided in a state where the phase difference is opened.
  • the head portion 21 of the bolt body 2 is picked with a finger in a state where the opening end of the female screw portion 34 existing on the nut seat surface 31 side of the nut 3 of the present invention is applied to the tip of the shaft portion 22.
  • the male screw 221 of the bolt body 2 and the female screw portion 34 are screwed together.
  • the bolt seat surface 211 of the bolt main body 2 and the nut seat surface 31 of the nut 3 of the present invention come close to each other.
  • the member P and the other member Q are temporarily fixed while being sandwiched between the bolt seat surface 211 and the nut seat surface 31.
  • the bolt body 2 is further rotated using a dedicated fastening tool (in this embodiment, a kind of a square wrench called “hexagon spanner”) 6, and thus the bolt body 2.
  • a dedicated fastening tool in this embodiment, a kind of a square wrench called “hexagon spanner”
  • Hexagon spanner a kind of a square wrench
  • the nut 3 of the present invention also tries to rotate in synchronization with the rotation of the bolt body 2.
  • the nut side is grasped with pliers, a spanner, etc., and this rotation operation is executed while suppressing the movement of the nut to rotate in synchronization with the rotation of the bolt.
  • the invention nut 3 has a shape in which the nut peripheral wall 33 is difficult to grasp with a general tool such as a pliers or a spanner.
  • the nut 3 of the present invention is provided with the projection 35 on the nut seat surface 31, so that when the bolt body 2 is rotated, the tip of the projection 35 is the other member Q.
  • a resistance force against the movement of the nut 3 of the present invention which is caught on the surface and tries to rotate in synchronization with the rotation of the bolt body 2 is generated.
  • the fitting material 4 is fitted into the operation hole 214.
  • the guide portion 42 is inserted in advance of the cap portion 41, and the cap portion 41 is positioned at a position where it can be pushed into the operation hole 214. Thereafter, the exposed end surface of the fitting material 4 is hit with a tool such as a hammer.
  • the first bolt 101 of the present invention is selected as the bolt used in combination with the nut 3 of the present invention.
  • the bolt used in pair with the nut 3 of the present invention Any of the first to fourth bolts 101 to 104 of the present invention may be selected. Further, it is not denied that the nut 3 of the present invention is used as a pair with bolts other than the first to fourth bolts 101 to 104 of the present invention.
  • the protrusions 35 those having a cylindrical shape with an outer diameter of 0.8 mm and a height of 0.5 mm are provided at four locations around the open end of the female screw portion 34.
  • the shape and number of the protrusions 35 are not particularly limited.
  • the shape of the projection 35 is preferably a columnar shape, a prism shape, a cone shape, a pyramid shape, a truncated cone shape, a truncated pyramid shape, or the like.
  • the number of the protrusions 35 is preferably in the range of 3 or more and 6 or less.
  • the outer diameter of the protrusion 35 (the diameter of the bulky portion) is preferably in the range of 0.1 mm or more and 1 mm or less.
  • the height of the protrusion 35 (height from the nut seat surface 31) is preferably in the range of 0.1 mm or more and 1 mm or less.
  • the overall shape of the nut 3 of the present invention is substantially frustoconical, but the overall shape of the nut 3 of the present invention is substantially hemispherical or substantially cylindrical in addition to being substantially frustoconical. It is preferable to use a shape that is difficult to grasp with a general tool such as a pliers or a spanner.
  • the height (H5) from the nut seat surface 31 to the nut top portion 32 is not particularly limited, but is 10 mm or less (more preferably 2 mm or more and more) so that it is more difficult to grip with a general tool such as a pliers or a spanner. It is preferable to be within a range of 10 mm or less. Further, when the overall shape of the nut 3 of the present invention is substantially a truncated cone as in the present embodiment, the opposing bus bars are arranged so that they are more difficult to grasp with a general tool such as a pliers or a spanner.
  • the angle formed is within a range of 45 degrees or more and 120 degrees or less (more preferably within a range of 45 degrees or more and 60 degrees or less per ⁇ 3). Is preferably in the range of 5 mm or more and 30 mm or less (more preferably in the range of 5 mm or more and 20 mm or less).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

La présente invention vise à procurer : un nouveau boulon antivol, qui, en plus d'une fonction antivol, a une opération de fixation simple ; un écrou antivol ; et un dispositif de fixation antivol formé par la combinaison du boulon antivol et de l'écrou antivol. A cet effet, l'invention porte sur un boulon antivol (1), lequel boulon comporte un boulon (2) et un élément d'adaptation (4) qui est adapté dans un trou d'action (214) dans le boulon (2), lequel boulon antivol (1) prend un état ne permettant pas à un outil de fixation (6) d'être inséré dans le trou d'action (214) du fait que l'élément d'adaptation (4) est incorporé dans le trou d'action (214) après la fixation ; dans lequel l'élément d'adaptation (4) comporte une section capuchon (41) soutenue par un côté interne ou une surface interne du trou d'action (214), et une section de guidage (42) pour guider la section capuchon (41) vers une phase qui permet à la section capuchon (41) d'être poussée dans le trou d'action (214).
PCT/JP2014/000787 2013-02-20 2014-02-17 Boulon antivol, écrou antivol et dispositif de fixation antivol WO2014129163A1 (fr)

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JP2013031537A JP5890339B2 (ja) 2013-02-20 2013-02-20 盗難防止用ボルト

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Cited By (3)

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JP2018188928A (ja) * 2017-05-11 2018-11-29 株式会社クボタ 鋼管継手
IT201900008043A1 (it) * 2019-06-04 2020-12-04 Lazzaro Groppo Dispositivo di fissaggio in forma di dado o bullone dotato di tappo
CN112727899A (zh) * 2021-01-18 2021-04-30 惠州市益珉金属科技有限公司 自毁式螺丝

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US9651193B1 (en) 2015-11-20 2017-05-16 Ian Taberner Security mounting arrangement
US10836304B2 (en) 2015-11-20 2020-11-17 Ian Taberner Security mounting arrangement
KR101873123B1 (ko) * 2016-12-18 2018-08-02 안세영 잠금장치가 구비된 볼트
JP7292127B2 (ja) 2019-06-25 2023-06-16 株式会社青山製作所 締結具

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JPH03118680U (fr) * 1990-03-20 1991-12-06
JP2002235723A (ja) * 2001-02-13 2002-08-23 K M Seiko Kk ネジ類の共回り防止構造
JP2003090322A (ja) * 2001-09-19 2003-03-28 Mamoru Ueno 防犯ネジ及びネジ頭の埋込材及びネジ用防犯座並びに防犯ネジセット
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JP3009470U (ja) * 1994-09-26 1995-04-04 株式会社澤村製作所 ２部材の連結構造
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JPS56173215U (fr) * 1980-05-27 1981-12-21
JPS6144014U (ja) * 1984-08-24 1986-03-24 株式会社 セミ−工業 六角穴付きボルト用の嵌入体
JPH03118680U (fr) * 1990-03-20 1991-12-06
JP2002235723A (ja) * 2001-02-13 2002-08-23 K M Seiko Kk ネジ類の共回り防止構造
JP2003090322A (ja) * 2001-09-19 2003-03-28 Mamoru Ueno 防犯ネジ及びネジ頭の埋込材及びネジ用防犯座並びに防犯ネジセット
JP2003130026A (ja) * 2001-10-30 2003-05-08 Honda Motor Co Ltd フランジナット

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JP2018188928A (ja) * 2017-05-11 2018-11-29 株式会社クボタ 鋼管継手
IT201900008043A1 (it) * 2019-06-04 2020-12-04 Lazzaro Groppo Dispositivo di fissaggio in forma di dado o bullone dotato di tappo
EP3748173A1 (fr) * 2019-06-04 2020-12-09 Lazzaro Groppo Dispositif de fixation fait comme un ecrou ou un boulon fourni avec une fiche
CN112727899A (zh) * 2021-01-18 2021-04-30 惠州市益珉金属科技有限公司 自毁式螺丝

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