JP3156671U - Anti-theft device - Google Patents

Abstract

An anti-theft device that can be easily mounted with a wrench and cannot be removed with a normal tool once tightened. A through-hole formed in the center, an accommodation recess formed in an inner peripheral wall on one side of the through-hole, having a diameter larger than the through-hole, and a drive structure formed in the accommodation recess. The anti-theft nuts 10 and 10A provided, the screw pillars 20 passing through the through holes of the anti-theft nuts 10 and 10A, and the coupling structure corresponding to the drive structure and being broken by the trimming force when tightened, The anti-theft parts 30 and 30A which are connected with a pillar, are accommodated in the through hole of the anti-theft nut, and are driven by the anti-theft nut. [Selection] Figure 1

Description

    The present invention relates to an anti-theft device that cannot be removed particularly when tightened.

    Normally, when fixing the license plate to an automobile or motorcycle, the bolts and nuts are tightened with ordinary hand tools, but if you use ordinary bolts and nuts, you can easily remove the license plate with ordinary hand tools. Because it was possible, theft could not be prevented.

  As shown in FIG. 11, the conventional antitheft device developed to solve the above-described problem has a sleeve (51), a bolt (52), and a cap (53), of which a sleeve (51 ) Is formed in a tapered shape having a smaller diameter from one side to the other side, and a bottom surface (510) is formed on the one side, and a rectangular parallelepiped convex portion (511) is provided on the bottom surface (510). A through hole (512) is formed at the center of the convex portion (511), and an opening (513) is formed on the other side so as to communicate with the through hole (512).

  When using a conventional antitheft device, the convex portion (511) of the sleeve (51) is inserted into the long hole of the number plate (71), and the bolt (52) is inserted from the through hole (512) of the sleeve (51). It is screwed into the car body (72) of an automobile or motorcycle, and a cap (53) is fitted into the head of the bolt (52) to seal the opening (513) of the sleeve (51). According to this method, since it cannot be easily removed with an ordinary hand tool, an antitheft effect can be provided.

    However, in order to exert the effect of the conventional antitheft device, the user who installs the antitheft device must perform the installation work of the license plate (71) outside the vehicle body (72). When the installation work of the license plate (71) cannot be performed inside (72), the conventional antitheft device cannot be used, which is extremely inconvenient in use.

  When installing a conventional anti-theft device, the screw (52) is first screwed into the vehicle body (72) with a screwdriver, and then the cap (53) is driven into the opening (513) of the sleeve (51) with a hammer. There was a drawback that it was very inconvenient because it was necessary.

  Furthermore, the conventional anti-theft device must be fitted precisely and strictly into the opening (513) of the sleeve (51) with the cap (53). The sleeve (51) having the right structure had to be manufactured.

  Therefore, the present invention was devised, and can be installed on the outside and inside of the vehicle body, and can be easily installed with just a wrench. Once tightened, it can be removed with a normal tool. The aim is to provide no anti-theft device.

The invention of claim 1 of the present application is formed in a through hole formed in the center, an inner peripheral wall on one side of the through hole, an accommodating recess having a larger diameter than the through hole, and a bottom surface of the accommodating recess. An antitheft nut comprising a drive ring surface formed and a drive recess recessed in the drive ring surface;
A threaded column that passes through the through hole of the anti-theft nut and has a coupling end and a protruding end,
The anti-theft is connected to the coupling end of the screw column and is accommodated in the through hole of the anti-theft nut, and is formed on the side of the neck that opposes the screw column side. A head having a diameter larger than that of the neck, which is accommodated in an accommodation recess of the nut, a coupling ring surface formed on the anti-theft nut side of the head, and a projection projecting from the coupling ring surface; An anti-theft device comprising an anti-theft member provided with a coupling convex piece installed in a concave portion is provided.

  The invention according to claim 2 of the present application provides the anti-theft device according to claim 1, wherein the neck portion of the anti-theft member has a columnar shape and is formed at a coupling end of the screw column. .

  The invention of claim 3 of the present application is characterized in that the neck portion of the anti-theft member has a circular tube shape, and a screw thread that can be attached to and detached from the screw column is formed on an inner peripheral surface. An anti-theft device is provided.

  The invention of claim 4 of the present application is characterized by comprising a projecting end projecting from one side of the antitheft nut and an engagement point press-molded on the projecting end to contact the one side. An antitheft device according to any one of claims 1 to 3 is provided.

  The device according to claim 5 of the present application provides the anti-theft device according to any one of claims 1 to 3, wherein the coupling convex piece has a triangular shape.

The invention of claim 6 of the present application is formed in a through hole penetrating in the center, an inner peripheral wall on one side of the through hole, an accommodating recess having a larger diameter than the through hole, and a bottom surface of the accommodating recess. An anti-theft nut comprising a drive ring surface formed and a drive convex piece projecting from the drive ring surface;
A threaded column that passes through the through hole of the anti-theft nut and has a coupling end and a protruding end,
The anti-theft is connected to the coupling end of the screw column and is accommodated in the through hole of the anti-theft nut, and is formed on the side of the neck that opposes the screw column side. A head having a diameter larger than that of the neck, which is accommodated in the accommodating recess of the nut, a coupling ring surface formed on the antitheft nut (10, 10A) side of the head, and a recess formed in the coupling ring surface. An anti-theft device comprising an anti-theft member provided with a coupling concave portion installed on the drive convex piece.

  The invention of claim 7 of the present application provides the anti-theft device according to claim 6, wherein a neck portion of the anti-theft member has a cylindrical shape and is formed at a coupling end of the screw column. .

  The invention according to claim 8 of the present application is characterized in that the neck portion of the anti-theft member has a circular tube shape, and a screw thread detachable from the screw column is formed on an inner peripheral surface. An anti-theft device is provided.

  The invention of claim 9 of the present application is that the neck portion of the anti-theft member has a protruding end protruding from one side of the anti-theft nut, and an engagement point press-molded to the protruding end to contact the one side. The antitheft device according to any one of claims 6 to 8, wherein the antitheft device is provided.

  The device according to claim 10 of the present application provides the anti-theft device according to any one of claims 6 to 8, wherein the coupling convex piece has a triangular shape.

    The anti-theft device according to the present invention solves the above-mentioned problems, and can be installed on the outside and inside of the vehicle body, and can be easily installed only with a spanner. Because it has a structure that cannot be removed with this tool, it is very practical.

1 is an exploded perspective view of a first embodiment of an antitheft device according to the present invention. 1 is a partially enlarged perspective view of a fixed antitheft bolt and an antitheft nut in a first embodiment of an antitheft device according to the present invention. FIG. 3 is a partially enlarged perspective view of a separable antitheft bolt and an antitheft nut in the first embodiment of the antitheft device according to the present invention. It is a top view of the engagement point in the antitheft device which concerns on this invention. It is a partial expanded sectional view which shows the state with which the drive structure and coupling | bonding structure in the antitheft device which concern on this invention were couple | bonded. It is a disassembled perspective view of 2nd Example of the antitheft device which concerns on this invention. It is sectional drawing which shows the use condition of 2nd Example of the antitheft device which concerns on this invention. It is a disassembled perspective view of 3rd Example of the antitheft device which concerns on this invention. It is sectional drawing which shows the use condition of 3rd Example of the anti-theft device which concerns on this invention. It is a disassembled perspective view of 4th Example of the antitheft device which concerns on this invention. It is a disassembled perspective view of the conventional antitheft device.

    Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following Example is only what showed the preferred embodiment of this invention, and the technical scope of this invention is not limited to the following Example itself at all.

  FIG. 1 is an exploded perspective view of a first embodiment of an antitheft device according to the present invention, and FIG. 2 shows a portion of a fixed antitheft bolt and an antitheft nut in the first embodiment of the antitheft device according to the present invention. FIG. 3 is an enlarged perspective view, FIG. 3 is a partially enlarged perspective view of a separable antitheft bolt and an antitheft nut in the first embodiment of the antitheft device according to the present invention, and FIG. 4 is an antitheft device according to the present invention. FIG. 5 is a partially enlarged sectional view showing a state in which the drive structure and the coupling structure in the antitheft device according to the present invention are coupled, and FIG. 6 is an antitheft device according to the present invention. 7 is an exploded perspective view of the second embodiment of the present invention, FIG. 7 is a sectional view showing a use state of the second embodiment of the antitheft device according to the present invention, and FIG. 8 is a third view of the antitheft device according to the present invention. FIG. 9 is an exploded perspective view of the embodiment, and FIG. 9 shows theft according to the present invention. Is a sectional view showing a use state of a third embodiment of the sealing device, FIG. 10 is an exploded perspective view of a fourth embodiment of the anti-theft device according to the present invention.

  As shown in FIG. 1, the first embodiment of the antitheft device according to the present invention includes two antitheft nuts (10, 10A), one screw column (20, 20A), and two antitheft members ( 30, 30A).

  As shown in FIGS. 2 and 3, the anti-theft nut (10, 10A) has a hexagonal shape and has a through hole (11, 11A) formed at the center and the through hole (11, 11A). An annular drive formed on the inner peripheral wall on one side and formed on the bottom of the receiving recess (12, 12A) having a larger diameter than the through hole (11, 11A) and the receiving recess (12, 12A) An annular surface (13, 13A) and a drive structure (14, 14A) installed on the driving annular surface (13, 13A) are provided.

  Furthermore, the drive structure (14, 14A) includes an arc-shaped drive recess (140, 140A) provided in a radial direction on one side of the drive ring surface (13, 13A), and the drive recess (140, 14A). 140A), and drive convex pieces (141, 141A) provided in a radial direction on the other side of the drive ring surface (13, 13A). Moreover, since the said drive convex piece (141, 141A) is easily cut | disconnected when it clamp | tightens, it is preferable to exhibit a triangle.

  The screw column (20, 20A) penetrates the through hole (11, 11A) of the two anti-theft nuts (10, 10A), the long hole of the number plate (71), and the positioning hole of the vehicle body (72). In addition, a coupling end and a fixed end are formed at both ends so that the license plate (71) and the vehicle body (72) are disposed between the two antitheft nuts (10, 10A).

  The two anti-theft members (30, 30A) are two types of fixed anti-theft members (30) and a separate anti-theft member (30A), of which the fixed anti-theft members (30) Is integrally formed at the coupling end of the screw column (20) and is fitted into the through hole (11) of one anti-theft nut (10), while the separable anti-theft member (30A). Is screwed to the fixed end of the screw column (20) so as to be separable by screwing means, and is fitted into the through hole (11A) of another antitheft nut (10).

  The two anti-theft members (30, 30A) each have a neck (31, 31A), a head (32, 32A), and a coupling structure (34, 34A), and the fixed anti-theft The neck (31) of the member (30) has a cylindrical shape and is formed at the coupling end (21) of the screw column (20), while the neck (31A) of the separable antitheft member (30A) The cylindrical shape is formed, and the screw thread (310A) detachable from the screw column (20) is formed on the inner peripheral surface.

  Further, the neck portion (31, 31A) of the anti-theft member (30, 30A) is connected to the anti-theft nut (10, 10A) from one side of the drive structure (14, 14A) of the corresponding anti-theft nut (10, 10A). ) And the anti-theft member (30, 30A) is rotatably installed in the accommodating recess (12, 12A) so as not to fall off the anti-theft nut (10, 10A). Therefore, the protruding end of the neck portion (31, 31A) protrudes from one side of the anti-theft nut (10, 10A), and in order to come into contact with the one side, there are three An engagement point (35) is provided.

  The head (32, 32A) of the anti-theft member (30, 30A) is a cylindrical body having a diameter larger than that of the neck (31, 31A). The neck (31, 31A) has a screw column (20) side, It is formed on the opposite side, and is housed in the housing recess (12, 12A) of the anti-theft nut (10, 10A) in order to prevent it from being broken by mischief or being opened by a normal tool. A coupling ring surface (33) corresponding to the prevention nut (10, 10A) is formed.

  As shown in FIG. 5, the coupling structure (34, 34A) is installed on the outer peripheral surface of the neck (31, 31A) or the coupling ring surface (33) of the head (32, 32A), and the coupling ring surface (33). ) In the radial direction in FIG. 3 and is easily cut when tightened, and the triangular coupling convex piece (340, 340A) installed in the driving recess (140, 140A), and the coupling ring The other end of the surface (33) is provided with an arcuate coupling recess (341, 341A) that is recessed in the same radial direction and accommodates the drive protrusion (141, 141A).

  When the anti-theft device according to the present invention is used, the screw column (20) is formed integrally with the fixed anti-theft member (30) at the coupling end (21), and the anti-theft corresponding to the fixed end (22). The through hole (11) of the prevention nut (10), the long hole of the number plate (71), and the positioning hole of the vehicle body (72) pass through the vehicle body (72) from the inside.

  The separation-type antitheft member (30A) is connected to another antitheft nut (10A), and the thread (310A) on the inner peripheral surface is screwed with the fixed end (22) of the screw column (20). At the same time, one of the anti-theft nuts (10, 10A) is fixed with a spanner, and the other anti-theft nut (10, 10A) is rotated with a spanner and tightened.

  Further, the rotated anti-theft nut (10, 10A) has the drive recess (140, 140A) and the drive protrusion (141, 141A) of the drive structure (14, 14A) in the anti-theft member (30, 30A), respectively. The anti-theft member (30, 30A) is driven to rotate by being made to correspond to the coupling convex piece (340, 340A) and the coupling concave portion (341, 341A) of the coupling structure (34, 34A), and the screw column (20) Or a separable anti-theft member (30A) is screwed into the screw column (20). According to this method, the purpose of installing the license plate (71) on the vehicle body (72) can be achieved.

  When the two anti-theft nuts (10, 10A) are tightened, the other spanner continues to rotate, and the drive convex piece (141, 141A) of one anti-theft nut (10, 10A) and the anti-theft member (30 , 30A) are cut by the pruning force of the corresponding drive recesses (140, 140A) and the corresponding connection recesses (341, 341A) and the two anti-theft nuts (10, 30A). , 10A) idles in the anti-theft member (30, 30A) and cannot be removed with a spanner or a normal tool.

  Further, the heads (32, 32A) of the anti-theft members (30, 30A) are accommodated in the accommodating recesses (12, 12A) of the corresponding anti-theft nuts (10, 10A). I can't open it.

  As shown in FIGS. 6 and 7, in the second embodiment of the anti-theft device according to the present invention, the same separable anti-theft member (30A) and anti-theft nut (10A) as in the first embodiment are provided. The predetermined bolt 73 has a head having a thin round shape and a flat inner surface, and an elliptical convex projecting on the inner surface. A portion (731), and a screw column (732) extending in the center of the convex portion (731).

  When the second embodiment of the antitheft device according to the present invention is used, the screw column (732) of the bolt (73) passes through the long hole of the number plate (71) and the positioning hole of the vehicle body (72), and theft Screwed into the separable anti-theft member (30A) connected to the prevention nut (10A), and fixed the bolt (73) with a hand or a tool, and rotated the anti-theft nut (10A) with a spanner. When the driving convex piece (141A) and the coupling convex piece (340A) are cut by the shearing force between the coupling concave portion (341A) and the driving concave portion (140A), the anti-theft nut (10A) becomes the anti-theft member (30A). It is impossible to remove it with a spanner or a normal tool.

  As shown in FIGS. 6 and 7, the third embodiment of the anti-theft device according to the present invention includes a fixed anti-theft member (30), a screw column (20), and the theft that are the same as those of the first embodiment. The anti-theft nut (74) may be engaged with a predetermined anti-theft anti-theft nut (74).

  Further, when used, the anti-theft nut (10) can be rotated with a spanner so that the screw column (20) can be screwed into the predetermined anti-theft nut (74) in the vehicle body (72). The anti-theft nut (10) runs idle in the anti-theft member (30) and cannot be removed with a spanner or a normal tool.

  As shown in FIG. 10, the fourth embodiment of the anti-theft device according to the present invention includes a fixed anti-theft member (30), a screw column (20), and an anti-theft nut ( 10), and in this embodiment, the screw column (20) employs a tapping screw, and its fixed end (22) is tapered and has no positioning hole, such as an automobile or motorcycle. Can be screwed directly into the car body (72).

    Since the present invention has the above-described configuration, it can be easily mounted with only a spanner, and once tightened, it cannot be removed with a normal tool, and the labor for installation can be greatly reduced.

10,10A Anti-theft nut,
11, 11A through hole,
12,12A housing recess,
13,13A driving ring,
14,14A drive structure,
140,140A driving recess,
141, 141A Driven convex piece,
20 Spiral column,
21 coupling end,
22 fixed end,
30, 30A anti-theft member,
31,31A neck,
32,32A head,
33,33A bond ring surface,
34,34A bond structure,
340, 340A coupling convex piece,
341, 341A coupling recess,
51 sleeve,
510 bottom,
511 convex part,
512 through-holes,
513 opening,
52 volts,
53 cap,
71 license plate,
72 body,
73 Default bolt,
730 head,
731 Convex part,
732 Spiral column.

Claims (10)

A through hole formed in the center, an inner circumferential wall on one side of the through hole, an accommodating recess having a larger diameter than the through hole, a driving ring surface formed on a bottom surface of the accommodating recess, An anti-theft nut comprising a drive recess recessed in the drive ring surface;
A threaded column that passes through the through hole of the anti-theft nut and has a coupling end and a protruding end,
The anti-theft is connected to the coupling end of the screw column and is accommodated in the through hole of the anti-theft nut, and is formed on the side of the neck that opposes the screw column side. A head having a diameter larger than that of the neck, which is accommodated in an accommodation recess of the nut, a coupling ring surface formed on the anti-theft nut side of the head, and a projection projecting from the coupling ring surface; An anti-theft member comprising a coupling convex piece installed in the concave portion.     The anti-theft device according to claim 1, wherein a neck portion of the anti-theft member has a cylindrical shape and is formed at a coupling end of the spiral pillar.     The anti-theft device according to claim 1, wherein a neck portion of the anti-theft member has a circular tubular shape, and a screw thread detachable from the screw column is formed on an inner peripheral surface.     The neck portion of the anti-theft member includes a projecting end projecting from one side of the anti-theft nut and an engagement point press-molded on the projecting end to contact the one side. Item 4. The antitheft device according to any one of Items 1 to 3.     The antitheft device according to any one of claims 1 to 3, wherein the connecting convex piece has a triangular shape. A through-hole penetrating in the center, an inner peripheral wall on one side of the through-hole, an accommodating recess having a larger diameter than the through-hole, a driving ring surface formed on a bottom surface of the accommodating recess, An anti-theft nut comprising a drive convex piece projecting from the drive ring surface;
A threaded column that passes through the through hole of the anti-theft nut and has a coupling end and a protruding end,
The anti-theft is connected to the coupling end of the screw column and is accommodated in the through hole of the anti-theft nut, and is formed on the side of the neck that opposes the screw column side. A head having a diameter larger than that of the neck, which is accommodated in the accommodating recess of the nut, a coupling ring surface formed on the antitheft nut (10, 10A) side in the head, and a recess in the coupling ring surface. And an anti-theft member comprising a coupling recess provided on the drive convex piece.     The anti-theft device according to claim 6, wherein a neck portion of the anti-theft member has a columnar shape and is formed at a coupling end of the screw column.     The anti-theft device according to claim 6, wherein a neck portion of the anti-theft member has a circular tube shape, and a screw thread that can be attached to and detached from the screw column is formed on an inner peripheral surface.     The neck portion of the anti-theft member includes a projecting end projecting from one side of the anti-theft nut and an engagement point press-molded on the projecting end to contact the one side. Item 9. The antitheft device according to any one of Items 6 to 8.     The antitheft device according to any one of claims 6 to 8, wherein the coupling convex piece has a triangular shape.

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