JP2008116031A - Burglarproof screw cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover variable in a removal difficulty level in accordance with the site of use and the purpose for use by attaching a cover on heads of a cross slot head screw and hexagon socket head screw to inhibit the removal of the screws by a work tool. <P>SOLUTION: The head of the cross slot head screw has a columnar shape. In a lateral side of the columnar screw head, a stopper groove 7 is formed deeper toward a screw-head-end direction and a groove tilted in a screw top end direction is formed. A cover mounted in the screw head is made up of a spring material. A plurality of claw-shaped stoppers 2 which opens in a cover cap direction and toward an inside of the cover is provided on a lateral side of the cover made up of the spring material. When inserted into the screw head, the claw-shaped stopper 2 is locked on a lateral side of the groove of the screw head. Further, the cover cap is holed and the hole is closed by a soft-material circular plate from inside to enable the soft-material plate to be holed by an electric drill. Part of the soft-material circular plat is formed in a sheet and thereby the screw head can be easily sealed. When the sheet-like portion is broken to loosen the screw, therefore, a seal broken state can be recognized. As a result, a burglarproof screw cover having a removal difficulty level variable in accordance with the site of use and the purpose for use is obtained. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention attaches a spring material cylindrical cover to the screw head and bolt head and changes part of the cover material and part of the structure, so that the cover can be mounted from the screw head and bolt head according to the purpose of use and usage. The present invention relates to the provision of screws, bolts, and covers that allow variable difficulty.

  Conventionally, for the convenience of bolts and nuts, screws and bolts have been used for the assembly of iron materials, assembly of buildings and machine tools, fixtures for public facilities, playground equipment for children's parks, etc. It is no exaggeration to say that there are no goods, products, or merchandise, but because of this convenience, many problems have arisen.

  The children's park playground equipment was unscrewed and the child was seriously injured, the aluminum rails of the bridge were stolen by someone overnight, the steel tower for high-voltage cables was knocked down, and the stainless steel groove lid Stolen, or even a car license plate is stolen, replaced with a stolen vehicle license plate and a stolen license plate, delays the discovery of the escape route and vehicle of the stolen vehicle, and a brutal secondary crime occurs in the stolen vehicle Yes.

  There are screws to prevent mischief as countermeasures, but various deformed cross holes and button hexagonal holes that can only be used with special wrenches are used for black boxes and crime prevention for light electrical products. With the spread of sales, the crime prevention effect has gradually faded.

After tightening the hexagonal hole of the hexagon socket head screw, a hexagonal bar wrench is used to drive the metal that has been molded into the hexagon with a hammer, etc. A security screw has appeared that has a hole that can be removed with a special wrench.
JP 2003-90322 PR JP 2003-113829 PR

  In the above Japanese Patent Application Laid-Open No. 2003-90322, a hexagonal metal is hammered into a cross hole after fastening with a cross bar wrench. Furthermore, depending on the location, there are places and products that cannot be shocked. JP-A No. 2003-113829 requires a special wrench to remove, and the structure is complicated and the unit price tends to be expensive.

  The subject of the present invention is the simplification of the mounting method. In the case of a cross-shaped screw, the spring material cover is inserted by hand after tightening with only a Phillips screwdriver, and a part of the cover is used as a claw-shaped stopper for fixing the cover.

  The use of screws is extremely diverse, and once fixed, the screws for fixing fixtures in buildings (steel towers) and public facilities are hardly loosened, and the screw covers in these places are strong enough not to be easily removed. In recent years, some parts of the vehicle license plate that have been seen as a problem are covered by a car maintenance specialist, a cover that is removed by an individual owner, or a cover for sealing purposes. The purpose is to provide a multipurpose screw and bolt cover that can be easily removed by breaking the seal with an installation tool, but the seal is broken and removed at a glance.

  In the present invention, the spring material is pressed over the cross hole screw head by press working, and further, claw-like stoppers are protruded obliquely in the direction toward the cover head on the side of the cover in the direction toward the inside of the cover. Form the groove side surface to fix the stopper to the part, and after tightening the cross hole screw with a Phillips screwdriver, push the spring material cover and put it on the cross hole screw head, the cover claw stopper will be pushed up on the side of the cross hole screw head, After passing through the head groove, the shape of the stopper returns to its original shape, and the tip of the claw-shaped stopper is fixed to the side surface of the groove wall formed on the cross hole screw head.

  The cover is made of a spring material, and in Example 1, when the spring material cover is attached, it cannot be removed even with an electric drill. In the second embodiment, a spring material cover is made with a hole so that an edge is left on the lid part at the time of manufacture, and a soft material such as aluminum is formed in a disk shape inside and attached to the inside of the cover. Installing. In this case, use a power drill to open a hole slightly larger than the outer diameter of the cross hole and loosen it with a Phillips screwdriver. In the third embodiment, a notch is made in the soft disc of the second embodiment, and a gap is formed between the edge of the spring material cover and the disc notch, and the tip of a minus driver is inserted into the gap. The soft disk was broken with a flat-blade screwdriver and loosened with a flat-blade screwdriver. In Example 4, the edge part of the disk of Example 2 is thickened, the part slightly larger than the cross hole is made into a thin sheet, and a screwdriver is inserted to break the sheet and remove the screw. The seal on the screw head was broken so that the screw was loosened and removed. A cover with a different degree of difficulty for cover destruction depending on the location and purpose of use.

  As described above, the present invention has a very simple structure and is configured only with a cover and screws, and the mounting cover is manufactured with only a spring material. The cover cannot be drilled and the screws cannot be loosened and removed.

  Furthermore, a hole is made in the cover lid part, and the hole is closed with soft material (aluminum, tin, zinc) from inside, and the material of the lid part is changed, so that a hole is made in the cover with an electric drill and tightened with a brass screwdriver or cross bar wrench Screws and bolts can be loosened and removed. Also, by changing the thickness and shape of the soft material, it is possible to loosen and remove screws and bolts with only the work tool without using an electric tool, and change the cover strength according to the purpose and place of use and change the cover breakage difficulty level. I tried to do it.

  Easily attach the spring material cover directly to the screw head and bolt head, and with an extremely simple structure, by changing part of the cover material according to the purpose and place of use, only with a grinder, electric drill or work tool I was able to remove it. It is a security screw cover that changes the difficulty of removal according to the place of use and purpose of use, and is a very simple structure with only two parts.

  An embodiment of a security screw in which a spring material cover is attached to a screw and bolt head according to the present invention so that torque cannot be transmitted to the bolt and screw by a screwdriver or the like will be described with reference to the drawings. FIG. 1 is a schematic diagram for explaining a layout of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG.

  A security screw cover embodiment 1 of the present invention will be described with reference to FIG. With the screw head cover 1 mounted and fixed to the screw head 6, the fastening joint 5 is fixed to the screw fastener (female screw) 4 with the cross hole screw 3, and the screw head cover 1 is pushed into the screw head 6. The claw-shaped stopper 2 formed on the cover 1 is pushed outward by the screw head 6, but spreads inward by the stopper stopper groove 7 and fixed on the side surfaces of the claw-shaped stopper 2 and the stopper stopper groove 7. It will not come off. Since the screw head cover 1 is made of a spring material, the electric drill cannot pierce the screw head cover 1, so there is only a method of scrubbing with an electric grinder or the like. Use a Phillips screwdriver or a hexagon socket wrench to fasten a cross hole screw or hexagon socket head bolt. In this case, the screw head 6 is buried in a deep hole in order to work in series with the cross hole screw or hexagon socket head bolt. When the screw head cover 1 is put on, the screw head 6 and the screw head cover 1 are embedded in the deep hole, and therefore cannot be removed even by a grinder.

  The second embodiment will be described with reference to FIG. FIG. 3 is a cross-sectional view of a perforated screw head cover 9 on which a soft material disc 10 is mounted and fixed to a perforated screw head cover 9 made of a spring material and covered with a hexagon socket head bolt 15. This soft disc can be drilled with an electric drill, and a hex wrench can be used, and a screwdriver or hex wrench can be used to remove screws and bolts. Example 2 is a security screw cover that can be removed with fixture screws and bolts for fixtures in public facilities, and can be handled with an electric drill and installation work tools.

  As a third embodiment, FIG. 5 is a front view in which a soft material disc 11 with a cut and a soft material disc 11 with a cut is attached to a perforated screw head cover 9 in FIG. A tool that is configured so that a gap 13 is formed between the edge of the screw head cover 9 and the perforated screw, and a screwdriver or the like is inserted into the gap 13 so that the disk can be broken. It is a security cover that requires two types of removal work and two steps of removal work. If the number changes when the name is changed, it is necessary to remove the screw, so it takes longer work time and work time than removing the screw. Example 3 made.

  Furthermore, as Example 4, a part of a disk is thinned into a sheet shape, covered with a screw head 6, and the sheet portion is torn with a cross screw with a sealed screw, and the screw can be directly loosened with a cross screw driver If it is forbidden to touch a person other than the manufacturer's human being with a dangerous part of a black box such as a weak electrical product or a high-voltage current part with a screw cover, confirm that the seal that sealed the screw head 6 is broken and the screw is loosened and opened. Example 4 for use.

  As crimes worsen, the demand for anti-prank and anti-theft equipment has become extremely strong, and manufacturers such as vending machines, safes, homes, outdoor facilities, and equipment are struggling with countermeasures. The thief and the police, who bring a 200-kilometer safe within 5 minutes, rush to the scene about 10 minutes after reporting. For this reason, there are many cases where the safe is fixed with bolts so that it cannot be easily carried out, but since the bolt can be easily removed, it is carried out in a short time. Vehicle thefts are also exchanged for stolen license plates at appropriate locations after the theft so that the escape route cannot be specified. In addition, various crime prevention measures are also demanded for houses, and it is possible to set the purpose of use of the present invention, the time to remove the screw at the place of use, and the work time to remove the screw in a place where maintenance of the manufacturer is required in about two steps. In addition, it can be easily sealed and the product management of the manufacturer is possible, so the need seems to be extremely large.

The spring material cover mounting | wearing figure in the screw | thread head by the external appearance side view in the Example of this invention. FIG. 3 is a cross-sectional view of FIG. The cover front view of a soft material mounting state to a perforated cover lid part. The front view of a soft material disc. The cover front view showing the clearance gap between a cover edge and a disc cut end in the figure which attached and fixed the soft material disc with a cut end to the perforated cover. Front view of soft disc with cut end A sectional view of a soft material disc mounted on a cover and covered with a hexagon socket head cap screw. Explanatory drawing of stopper stopper groove in cross hole screw side view.

Explanation of symbols

1: Screw head cover 2: Claw-shaped stopper 3: Cross hole screw 4: Screw fastener (female screw)
5: Fastening object 6: Screw head 7: Stopper groove 8: Cross hole 9: Perforated screw head cover 10: Soft material disc 11: Soft material disc with cut 12: Cut port 13: Clearance 14: Hexagonal hole 15: Hexagon socket head cap screw

Claims (6)

  With cold heading, cutting, etc., screw heads such as cross hole screws and minus screws are made into a cylindrical shape, and the cylindrical screw head side circumference around the stopper stopper of the cover is deep in the direction of the screw head, on the opposite side Formed by a cover made of spring material that can be attached to the screw head, forming a groove that is inclined toward the screw tip, and the spring material cover opens on the side of the cover in the reverse direction (cover cover direction) to the inside of the cover. When the spring material cover is inserted into the cross hole screw head, the claw stopper enters along the screw head, and the claw stopper stops in the groove formed on the cross hole screw head. A security screw cover that spreads with a claw-like stopper on the side of the groove and cannot be removed with a cross screwdriver or work tool.   By cold forging, cutting, etc., the hexagonal bolt head side circumference is deepened to the stopper stopper of the cover, the bolt head tip direction surface is deepened, and a groove inclined to the opposite screw tip direction is formed. The cover is made of a spring material that can be attached to the bolt head with a hole. The spring material cover is provided with a plurality of claw-shaped stoppers that are open on the inner side of the cover in the reverse direction of attachment (in the direction of the cover lid). When the material cover is inserted into the hexagon socket head bolt head, the claw-shaped stopper spreads in the groove formed on the side surface of the hexagon socket head bolt, and the spring material cover is locked to the side surface of the groove by the claw-shaped stopper. Security screw cover that prevents the spring material cover from coming off and cannot be removed with a wrench or work tool.   A disk made of spring material with a cross hole screw head and a hexagon socket head bolt cover with a hole smaller than the inner diameter of the cover, leaving the cover lid edge part, which is the same or slightly smaller than the inner diameter of the cover. Insert a soft material (aluminum, tin, zinc, etc.) into the back side of the cover lid edge, fix it on the back side of the cover edge, close the hole, cover it with a cross hole screw head, a hexagon socket head bolt head, etc. The security screw according to claim 1 or 2, wherein a hole can be opened and removed.   A disk made of spring material with a cross hole screw head and a hexagon socket head bolt cover with a hole smaller than the inner diameter of the cover, leaving the cover edge, leaving the cover lid edge part the same or slightly smaller than the inner diameter of the cover. Cut into a part of a soft material (aluminum, tin, zinc, etc.), insert it into the back side of the cover lid edge, fix it on the back side of the cover lid edge, close the hole, and a part of the cutout port is the cover lid edge The cover is placed on a cross-head screw head, a hexagon socket head bolt, etc., configured so that a gap is formed between the portion and a soft screw lid portion can be broken by inserting a flathead screwdriver or the like into the gap. Crime prevention screw cover described in 2.   A disk made of spring material with a cross hole screw head and a hexagon socket head bolt cover with a hole smaller than the inner diameter of the cover, leaving the cover edge, leaving the cover lid edge part the same or slightly smaller than the inner diameter of the cover. -Shaped soft material (aluminum, tin, zinc, etc.), a part of synthetic resin is molded into a thin sheet, inserted and mounted on the back side of the cover cover edge, fixed on the back side of the cover cover edge, the hole is closed and the cover is a cross hole The security screw cover according to claim 1 or 2, wherein the thin sheet portion of the soft disc can be broken only by a screw mounting tool when the screw head, a hexagon socket head bolt head, etc. are inserted and a screwdriver is inserted.   A disk made of spring material with a cross hole screw head and a hexagon socket head bolt cover with a hole smaller than the inner diameter of the cover, leaving the cover edge, leaving the cover lid edge part the same or slightly smaller than the inner diameter of the cover. Perforated soft sheet (aluminum, tin, zinc, etc.) or synthetic resin sheet, insert into the back side of the cover cover cover edge, fix the cover cover cover back, close the hole, and cover the cross The screw head, a hexagon socket head bolt head, etc. are covered, and a soft material (aluminum, tin, zinc) disk or a synthetic resin disk sheet portion can be broken with a screwdriver or the like. Item 4. A security screw cover according to item 4 or claim 5.

Images