Hub anti-theft fastener

Abstract

The utility model relates to the technical field of anti-theft fasteners, and discloses a hub anti-theft fastener which comprises a nut, a mounting groove is formed in the top of the nut, an inner hexagonal groove is formed in the bottom of the mounting groove, inclined grooves are formed in the two sides of the inner hexagonal groove, and magnetic balls are connected into the inclined grooves in a rolling mode. A mounting groove is formed in the upper portion of the inner hexagonal hole, a mounting block is arranged in the mounting groove, a limiting block is fixedly connected to the bottom of the mounting block, a mounting hole is formed in the limiting block, a magnet is magnetically connected to the upper side of the interior of the mounting hole, and a dismounting hole is formed in the top of the mounting block. The mounting block can drive the limiting block to be inserted into the inner hexagonal hole and the mounting groove, so that the inner hexagonal hole is sealed and matched with the radian of the nut, the inner hexagonal hole is prevented from being exposed to the outside, the nut is arc-shaped, effective friction force cannot be provided, the nut cannot be disassembled by a wrench, and the anti-theft effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-theft fasteners, in particular to a wheel hub anti-theft fastener. Background Art

[0002] Fasteners are usually used to fasten two objects together. Conventional bolts can often be easily removed using a wrench or screwdriver. However, in some special occasions, anti-theft fasteners are needed to prevent the bolts from being removed maliciously.

[0003] Existing wheel hub anti-theft fasteners can usually only be tightened or removed using special wrenches, and thieves often have multiple types of wrenches, which can be used to maliciously remove the fasteners. Therefore, the anti-theft of the fasteners needs to be improved. Utility Model Content

[0004] In response to the deficiencies of the prior art, the present invention provides a wheel hub anti-theft fastener to solve the problem mentioned in the above background technology that the existing wheel hub anti-theft fasteners can usually only be tightened or removed using special wrenches, and thieves often have multiple types of wrenches, which can allow them to maliciously dismantle the fasteners, so the anti-theft of the fasteners needs to be improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wheel hub anti-theft fastener, comprising a nut, a screw fixedly connected to the bottom of the nut, a mounting groove provided at the top of the nut, a hexagonal slot provided at the bottom of the mounting groove, oblique slots provided on both sides of the hexagonal slot, a magnetic ball rollingly connected to the inside of the oblique slot, a mounting block provided inside the mounting slot, a limiting block fixedly connected to the bottom of the mounting block, a mounting hole provided inside the limiting block, a magnet magnetically connected to the upper side of the inner part of the mounting hole, and a disassembly hole provided on the top of the mounting block.

[0006] Preferably, the shape and size of the mounting groove are the same as those of the mounting block, and the mounting block fits in contact with the inner wall of the mounting groove.

[0007] By adopting the above technical solution, by setting up installation grooves, installation blocks, etc. for use with limit blocks and hexagonal holes, the installation blocks can drive the limit blocks to be inserted into the hexagonal holes and the installation grooves, thereby sealing the hexagonal holes and adapting to the curvature of the nut to prevent the hexagonal holes from being exposed to the outside world. Because the nut is arc-shaped, it cannot provide effective friction and cannot be disassembled by a wrench, thereby improving the anti-theft effect.

[0008] Preferably, the shape and size of the limiting block are adapted to the shape and size of the inner hexagonal hole, and the limiting block fits the inner hexagonal hole.

[0009] Preferably, the two oblique grooves are in the shape of a trapezoid that is narrow at the top and wide at the bottom, and the two oblique grooves are symmetrically arranged with respect to each other and are connected to the hexagonal inner hole.

[0010] By adopting the above technical solution, by setting an oblique groove, a limit block, etc. in conjunction with the magnetic ball, the magnetic ball is adsorbed on the outer surface of the limit block under the action of magnetic force. When the limit block moves upward, it will also drive the magnetic ball to roll upward along the oblique groove until the distance between the oblique groove and the limit block is smaller than the diameter of the magnetic ball. The magnetic ball will be stuck, thereby limiting the movement of the limit block and preventing the installation block from falling out of the installation groove, thereby improving the anti-theft effect.

[0011] Preferably, the disassembly hole passes through the inner walls of the mounting block and the limiting block, and is communicated with the top of the mounting hole.

[0012] Preferably, the diameter of the magnet is adapted to the diameter of the inner wall of the mounting hole, and the magnet fits closely to the inner wall of the mounting hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The wheel hub anti-theft fastener is used in conjunction with a limit block and a hexagonal hole by setting an installation groove, a mounting block, etc. The installation block can drive the limit block to be inserted into the hexagonal hole and the installation groove, thereby sealing the hexagonal hole and adapting to the curvature of the nut to prevent the hexagonal hole from being exposed to the outside world. Because the nut is arc-shaped and cannot provide effective friction, it cannot be disassembled by a wrench, thereby improving the anti-theft effect.

[0015] 2. The wheel hub anti-theft fastener is used in conjunction with a disassembly hole, a magnetic ball, an oblique groove, etc. A pre-prepared high-strength steel needle is inserted into the disassembly hole, and the magnet is pushed down to the lowest end of the hexagonal hole and pressed against it. The magnet will drive the magnetic ball to move to the bottom of the oblique groove. The spacing below the oblique groove is larger than the spacing of the magnetic balls, thereby releasing the lock on the limit block. At this time, the staff can use the installation block to drive the limit block to be removed from the hexagonal hole, thereby exposing the hexagonal hole to the outside world, making it easier for the staff to disassemble.

[0016] 3. The wheel hub anti-theft fastener is provided with a disassembly hole. During normal use, the staff can block the disassembly hole to hide the position of the disassembly hole, thereby misleading thieves and improving the anti-theft effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the enlarged cross-section structure of the nut of the utility model;

[0019] Figure 3 This is a schematic diagram of the nut structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the limit block structure of the utility model.

[0021] In the figure: 1. Nut; 2. Mounting slot; 3. Hexagonal socket; 4. Oblique slot; 5. Magnetic ball; 6. Screw; 7. Mounting block; 8. Limit block; 9. Mounting hole; 10. Magnet; 11. Disassembly hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1:

[0024] Please refer to Figures 1-3. A wheel hub anti-theft fastener includes a nut 1, a screw 6 is fixedly connected to the bottom of the nut 1, a mounting groove 2 is opened at the top of the nut 1, a hexagonal groove is opened at the bottom of the mounting groove 2, and oblique grooves 4 are opened on both sides of the hexagonal groove. The two oblique grooves 4 are trapezoidal in shape and narrow at the top and wide at the bottom, and the two oblique grooves 4 are symmetrically arranged with each other and connected with the hexagonal hole 3. A magnetic ball 5 is connected to the inside of the oblique groove 4 in a rolling manner, and a mounting block 7 is provided inside the mounting groove 2. The shape and size of the mounting groove 2 are the same as those of the mounting block 7, and the mounting block 7 fits with the inner wall of the mounting groove 2. A limiting block 8 is fixedly connected to the bottom of the mounting block 7. The shape and size of the limiting block 8 are adapted to the shape and size of the hexagonal hole 3, and the limiting block 8 fits with the hexagonal hole 3. A mounting hole 9 is opened inside the limiting block 8, and a magnet 10 is magnetically connected to the upper side of the inner part of the mounting hole 9. A disassembly hole 11 is opened on the top of the mounting block 7.

[0025] Working principle: When in use, the staff inserts the pre-prepared hexagonal wrench into the hexagonal hole 3 and installs it on the wheel hub. At this time, the staff will use the mounting block 7 to drive the limit block 8 to be inserted into the hexagonal hole 3 and the mounting groove 2, thereby completely blocking the hexagonal hole 3. When the limit block 8 is inserted into the hexagonal hole 3, the magnet 10 located in the mounting hole 9 will adsorb the magnetic ball 5 under the action of magnetic force. The magnetic ball 5 is adsorbed on the outer surface of the limit block 8 under the action of magnetic force. When the limit block 8 moves upward, it will also drive the magnetic ball 5 to roll upward along the oblique groove 4 until the distance between the oblique groove 4 and the limit block 8 is less than the diameter of the magnetic ball 5. The magnetic ball 5 will be stuck, thereby limiting the movement of the limit block 8 and preventing the mounting block 7 from falling out of the mounting groove 2, thereby ensuring the integrity of the nut 1. Because the nut 1 is arc-shaped, it cannot provide effective friction and cannot be disassembled by a wrench, thereby improving the anti-theft effect.

[0026] Compared with the related art, the wheel hub anti-theft fastener provided by the utility model has the following beneficial effects: by setting the installation groove 2, the installation block 7, etc. in conjunction with the limit block 8 and the hexagonal hole 3, the installation block 7 can drive the limit block 8 to be inserted into the hexagonal hole 3 and the installation groove 2, thereby sealing the hexagonal hole 3 and adapting to the curvature of the nut 1 to prevent the hexagonal hole 3 from being exposed to the outside world. Because the nut 1 is arc-shaped, it cannot provide effective friction and cannot be disassembled by a wrench, thereby improving the anti-theft effect.

[0027] Example 2:

[0028] Please refer to Figures 1-4. A mounting groove 2 is provided on the top of the nut 1, a hexagonal groove is provided at the bottom of the mounting groove 2, and oblique grooves 4 are provided on both sides of the hexagonal groove. A magnetic ball 5 is connected to the inside of the oblique groove 4 in a rolling manner. A mounting block 7 is provided inside the mounting groove 2, and a limiting block 8 is fixedly connected to the bottom of the mounting block 7. A mounting hole 9 is provided inside the limiting block 8. A magnet 10 is magnetically connected to the upper side of the inner part of the mounting hole 9. The diameter of the magnet 10 is adapted to the diameter of the inner wall of the mounting hole 9, and the magnet 10 fits the inner wall of the mounting hole 9. A disassembly hole 11 is provided on the top of the mounting block 7. The disassembly hole 11 passes through the inner walls of the mounting block 7 and the limiting block 8, and is communicated with the top of the mounting hole 9.

[0029] Working principle: When the fastener needs to be disassembled, the staff can use a special high-strength steel needle to insert it into the disassembly hole 11, and push the magnet 10 down to the lowest end of the hexagonal hole 3 and resist it. The magnet 10 will drive the magnetic ball 5 to move to the bottom of the oblique groove 4. The lower spacing of the oblique groove 4 is greater than the spacing of the magnetic balls 5, thereby releasing the lock on the limit block 8. At this time, the staff can use the installation block 7 to drive the limit block 8 to be removed from the hexagonal hole 3, and then expose the hexagonal hole 3 to the outside world, which is convenient for the staff to disassemble. During normal use, the staff can block the disassembly hole 11 to hide the position of the disassembly hole 11, thereby misleading thieves and improving the anti-theft effect.

[0030] Compared with the related art, the wheel hub anti-theft fastener provided by the utility model has the following beneficial effects: by setting a disassembly hole 11, a magnetic ball 5, an oblique groove 4, etc. for use in combination, a pre-prepared high-strength steel needle is inserted into the disassembly hole 11, and the magnet 10 is pushed down to the lowest end of the hexagonal hole 3 and pressed against it. The magnet 10 will drive the magnetic ball 5 to move to the bottom of the oblique groove 4. The spacing below the oblique groove 4 is greater than the spacing of the magnetic ball 5, thereby releasing the lock on the limit block 8. At this time, the staff can drive the limit block 8 to be removed from the hexagonal hole 3 through the installation block 7, thereby exposing the hexagonal hole 3 to the outside world, making it convenient for the staff to disassemble.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel hub anti-theft fastener, comprising a nut (1), characterized in that: The bottom of the nut (1) is fixedly connected to a screw rod (6), the top of the nut (1) is provided with a mounting groove (2), the bottom of the mounting groove (2) is provided with an inner hexagonal groove, both sides of the inner hexagonal groove are provided with oblique grooves (4), the interior of the oblique groove (4) is rollingly connected to a magnetic ball (5), the interior of the mounting groove (2) is provided with a mounting block (7), the bottom of the mounting block (7) is fixedly connected to a limit block (8), the interior of the limit block (8) is provided with a mounting hole (9), the interior upper side of the mounting hole (9) is magnetically connected to a magnet (10), and the top of the mounting block (7) is provided with a disassembly hole (11).

2. The wheel hub anti-theft fastener according to claim 1, characterized in that: The shape and size of the installation groove (2) are the same as those of the installation block (7), and the installation block (7) fits the inner wall of the installation groove (2).

3. The wheel hub anti-theft fastener according to claim 1, characterized in that: The shape and size of the limiting block (8) are adapted to the shape and size of the inner hexagonal hole (3), and the limiting block (8) fits the inner hexagonal hole (3).

4. The wheel hub anti-theft fastener according to claim 1, characterized in that: The two oblique grooves (4) are in the shape of a trapezoid that is narrow at the top and wide at the bottom, and the two oblique grooves (4) are symmetrically arranged with respect to each other and are connected to the hexagonal inner hole (3).

5. The wheel hub anti-theft fastener according to claim 1, characterized in that: The disassembly hole (11) passes through the inner walls of the mounting block (7) and the limiting block (8), and is connected to the top of the mounting hole (9).

6. The wheel hub anti-theft fastener according to claim 1, characterized in that: The diameter of the magnet (10) is adapted to the inner wall diameter of the mounting hole (9), and the magnet (10) is in contact with the inner wall of the mounting hole (9).

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