Anti-disassembly and anti-theft bolt

Abstract

The utility model belongs to the technical field of bolt fasteners, and particularly relates to an anti-disassembly and anti-theft bolt which comprises a bolt head and a bolt rod, an anti-disassembly mechanism is arranged on the surface of the bolt head, and the anti-disassembly mechanism comprises an inner 12-angle groove formed in the upper surface of the bolt head. And a special tool is inserted into the inner 12-angle groove to unlock the bolt. According to the anti-disassembly and anti-theft bolt, by designing the bolt head on the basis of the unique inner 12-angle groove structure and 12 evenly-distributed contact surfaces in the bolt head, it can be ensured that higher meshing degree exists between a tool and a screw, the slipping risk caused by edge abrasion is remarkably reduced, the anti-theft column is arranged in the center of a hole, and the anti-disassembly and anti-theft effect is achieved. Different from the structural form of a conventional anti-disassembly and anti-theft bolt, the anti-disassembly and anti-theft bolt is further improved, and the dual anti-disassembly and anti-theft functions are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt fastener technical field especially relates to a bolt for anti -disassembly theftproof. BACKGROUND

[0002] Bolt fastener is a kind of very important industrial part in industrial field, for connecting two structural members.In some structures of automobile, such as automobile engine, automobile gearbox and the like, the intellectual property right protection of the core parts therein is involved, and the packaging bolt thereon is designed into special-shaped bolt structure, so that the disassembly wrench commonly used in market cannot disassemble.

[0003] The Chinese patent with the authorization announcement number CN222334234U3 discloses a fastener for automobile anti-disassembly theftproof, the bolt head of bolt fastener is uniquely designed, so that it has special pattern, the disassembly operation of bolt cannot be carried out by regular wrench, and it has good theftproof and anti-disassembly function.

[0004] But the above technical scheme has been common in market, and single theftproof component cannot effectively prevent illegal person from disassembling privately, illegal person can pry bolt to damage disassembly or directly rotate bolt reversely to disassemble, so that in order to avoid the occurrence of the above situation, the application provides a bolt for anti-disassembly theftproof. UTILITY MODEL CONTENTS

[0005] Based on the above technical problems, the utility model provides a bolt for anti-disassembly theftproof.

[0006] The utility model provides a bolt for anti-disassembly theftproof, including bolt head and bolt rod, the surface of bolt head is provided with anti-disassembly mechanism, the anti-disassembly mechanism includes the inner 12 angle groove being opened from the bolt head upper surface, and the inner 12 angle groove is inserted by being equipped with professional tool to unlock bolt.

[0007] Preferably, twelve angle faces of the inner 12 angle groove are evenly distributed.

[0008] Preferably, the inner bottom wall at the hole center of the inner 12 angle groove is fixedly connected with the theftproof column.

[0009] Preferably, the anti-disassembly mechanism further includes the fastening concave pipe movably sleeved on the outer surface of the bolt rod, the lower surface of the fastening concave pipe is of rubber material, and the upper end of the fastening concave pipe is movably sleeved on the outer surface of the bolt head.

[0010] Preferably, the anti-disassembly mechanism further includes the movable groove annularly and arrayedly distributed on the outer surface of the bolt head, and the inner wall of the movable groove is fixedly connected with the buffer telescopic rod with buffer spring.

[0011] Preferably, the anti-disassembly mechanism further comprises a locking ball fixedly connected to the surface of the telescopic end of the buffer telescopic rod, an inner surface of the fastening concave tube is provided with a ratchet groove, the locking ball is in sliding connection with the inner surface of the ratchet groove, and the outer surface of the bolt head is fixedly connected with ratchet blocks in an annular array.

[0012] Preferably, the screwing-in direction of the bolt rod is opposite to the unlocking direction of the bolt head.

[0013] The beneficial effects in the utility model are as follows:

[0014] 1. The anti-disassembly mechanism can be used in combination with the bolt fastening function and also integrates the anti-theft technology, thereby effectively preventing unnecessary loss; in the adjustment process, the bolt head based on the unique inner 12-angle groove structure has 12 evenly distributed contact surfaces in the interior, which can ensure higher meshing between the tool and the screw, significantly reduce the risk of slipping caused by edge wear, and the anti-theft column is arranged at the hole center, thereby being different from the structure of the conventional anti-disassembly anti-theft bolt and being further improved to have double anti-disassembly and anti-theft functions.

[0015] 2. The fastening concave tube and the locking ball and other structures can be used to increase the bolt fastening and improve the anti-theft function; in the adjustment process, after the screw is tightened, the lower surface of the fastening concave tube is pressed against the surface of the mounting part, thereby avoiding the risk of screw slippage, the upper end of the fastening concave tube wraps the bolt head, thereby avoiding prying the bolt from the outside, the locking ball extends into the ratchet groove, when the bolt head is rotated clockwise, the locking ball and the ratchet block are in clamping and braking with the inner surface of the ratchet groove, thereby forming a locking state between the bolt head and the fastening concave tube pressed tightly, and the bolt is prevented from being disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a schematic diagram of a bolt for anti-disassembly and anti-theft;

[0017] Figure 2 The utility model provides a locking ball structure plan view of a bolt for anti-disassembly and anti-theft;

[0018] Figure 3 The utility model provides an anti-theft column structure perspective view of a bolt for anti-disassembly and anti-theft;

[0019] Figure 4 The utility model provides a ratchet block structure perspective view of a bolt for anti-disassembly and anti-theft;

[0020] Figure 5The utility model provides a kind of buffer telescopic rod structure stereogram for bolt of anti-disassembly theft prevention.

[0021] Figure 6 The utility model provides a kind of fastening concave tube structure stereogram for bolt of anti-disassembly theft prevention.

[0022] In the drawing: 1, bolt head;2, bolt rod;3, inner 12 angle groove;4, theft prevention column;5, fastening concave tube;6, movable slot;7, buffer telescopic rod;8, locking ball;9, ratchet groove;10, ratchet block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all.

[0024] REFERENCE Figures 1-6 A kind of bolt for anti-disassembly theft prevention, including bolt head 1 and bolt rod 2, the surface of bolt head 1 is provided with anti-disassembly mechanism, anti-disassembly mechanism includes the inner 12 angle groove 3 being opened from bolt head 1 upper surface, by being equipped with professional tool insertion inner 12 angle groove 3 to unlock bolt.

[0025] Twelve angle faces of inner 12 angle groove 3 are evenly distributed, this bolt design is based on the unique inner 12 angle groove 3 structure, 12 evenly distributed contact surfaces in the interior, can ensure that the higher engagement between tool and screw, at every 30 ° angle, tool can switch engagement position, further strengthens the transmission efficiency and stability of torque, since the angle of each contact surface is more intensive, reduce the wear and tear of tool and screw contact, reduce the risk of bolt slipping in the use process, compared with traditional hexagonal bolt or other shape theftproof bolt, this design significantly prolongs service life, and improves the damage resistance.

[0026] The inner bottom wall of the hole center of inner 12 angle groove 3 is fixedly connected with theft prevention column 4, the theft prevention column 4 is arranged at the bolt hole center, which can prevent the core part of the bolt from being directly contacted by conventional tools, making disassembly more difficult, and ordinary disassembly tools cannot directly contact or drive the bolt, thereby increasing the difficulty of disassembly, the theft prevention column 4 is combined with the structure of the inner 12 angle groove 3, providing double protection for the anti-theft function, even if the attacker obtains special tools, additional disassembly is still needed for the special design of the theft prevention column 4, further increasing the security.

[0027] By setting the anti-disassembly mechanism, the anti-theft technology is integrated while the bolt fastening function is taken into account, effectively preventing unnecessary losses. In the adjustment process, the bolt head 1 is designed based on a unique inner 12-angle groove 3 structure, and the 12 evenly distributed contact surfaces inside it can ensure higher engagement between the tool and the screw, significantly reducing the risk of slipping caused by edge wear. A theft-proof column 4 is provided at the center of the hole, which is different from the structure of the conventional anti-disassembly anti-theft bolt and further improves the double anti-disassembly anti-theft function.

[0028] When the bolt is installed by screwing, in order to improve the fastening of the bolt, the anti-disassembly mechanism further includes a fastening concave tube 5 movably sleeved on the outer surface of the bolt shaft 2. The lower surface of the fastening concave tube 5 is made of rubber material, and the upper end of the fastening concave tube 5 is movably sleeved on the outer surface of the bolt head 1. After the screw is tightened, the lower surface of the fastening concave tube 5 is pressed against the surface of the mounting part, thereby avoiding the risk of bolt thread stripping, and the upper end of the fastening concave tube 5 wraps the bolt head 1, which can also prevent the bolt from being pried from the outside, equivalent to adding a protective cover to the bolt.

[0029] In order to avoid illegal persons from disassembling the bolt by reverse rotation, the anti-disassembly mechanism further includes a movable groove 6 arranged in a ring array on the outer surface of the bolt head 1. The inner wall of the movable groove 6 is fixedly connected with a buffer telescopic rod 7 provided with a buffer spring. The buffer telescopic rod 7 in the movable groove 6 extends outwardly from the bolt head 1 and contacts the inner surface of the fastening concave tube 5, thereby realizing the connection between the bolt head 1 and the fastening concave tube 5, avoiding the disassembly of the bolt by rotating the bolt head 1, and the buffer spring can increase the connection performance of the buffer telescopic rod 7.

[0030] In order to improve the anti-theft performance of the bolt, it is ensured that the bolt can only be unlocked by rotating in a specific direction with a professional tool, so the anti-disassembly mechanism further includes a locking ball 8 fixedly connected to the surface of the telescopic end of the buffer telescopic rod 7. The inner surface of the fastening concave tube 5 is provided with a ratchet groove 9, and the locking ball 8 is slidably connected to the inner surface of the ratchet groove 9. The outer surface of the bolt head 1 is fixedly connected with a ratchet block 10 arranged in a ring array. The outer surface of the ratchet block 10 is slidably connected to the inner surface of the ratchet groove 9. The inner surface of the fastening concave tube 5 is designed with a unique ratchet groove 9. The locking ball 8 is pushed into the ratchet groove 9 by the extension of the buffer telescopic rod 7. When the bolt head 1 is rotated clockwise, the locking ball 8 and the ratchet block 10 are both clamped and braked with the inner surface of the ratchet groove 9, thereby forming a locked state between the bolt head 1 and the compressed fastening concave tube 5, thereby avoiding disassembly of the bolt. When the bolt head 1 is rotated counterclockwise, the ratchet block 10 and the locking ball 8 slide on the inner surface of the ratchet groove 9, and the bolt head 1 and the fastening concave tube 5 are in an unlocked state as the buffer telescopic rod 7 contracts, thereby facilitating the disassembly of the bolt by the staff.

[0031] In order to facilitate the use of the bolt, the screwing direction of the bolt rod 2 is opposite to the unlocking direction of the bolt head 1, and when the bolt is screwed clockwise by a professional tool, the fastening concave pipe 5 is driven to link, thereby facilitating the installation of the bolt, but when the bolt is unscrewed counterclockwise, the relative movement between the bolt and the fastening concave pipe 5 is enabled to unlock.

[0032] By arranging the fastening concave pipe 5 and the locking ball 8 and the like, the bolt fastening and the anti-theft function can be improved, and in the adjusting process, after the bolt is screwed, the lower surface of the fastening concave pipe 5 is pressed against the surface of the mounting part, thereby avoiding the risk of bolt slippage, and the upper end of the fastening concave pipe 5 wraps the bolt head 1, thereby avoiding the prying of the bolt by the outside, and the locking ball 8 extends into the ratchet groove 9, and when the bolt head 1 is rotated clockwise, the locking ball 8 and the pawl block 10 are clamped and braked against the inner surface of the ratchet groove 9, thereby forming a locking state between the bolt head 1 and the fastening concave pipe 5, thereby avoiding the disassembly of the bolt.

[0033] Working principle: in the specific embodiment of the utility model, when the bolt is screwed clockwise by a professional tool, the fastening concave pipe 5 is driven to link, thereby facilitating the installation of the bolt, and after the bolt is screwed, the lower surface of the fastening concave pipe 5 is pressed against the surface of the mounting part, and the locking ball 8 is pushed into the ratchet groove 9 by the extension and retraction of the buffer telescopic rod 7, and when the bolt head 1 is rotated clockwise, the locking ball 8 and the pawl block 10 are clamped and braked against the inner surface of the ratchet groove 9, thereby forming a locking state between the bolt head 1 and the fastening concave pipe 5, thereby avoiding the disassembly of the bolt, and when the bolt head 1 is rotated counterclockwise, the pawl block 10 and the locking ball 8 slide on the inner surface of the ratchet groove 9, and along with the contraction of the buffer telescopic rod 7, the bolt head 1 and the fastening concave pipe 5 are in an unlocked state, thereby facilitating the disassembly of the bolt by the staff.

[0034] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A tamper-proof security bolt comprising a bolt head (1) and a bolt shank (2), characterized in that: The surface of the bolt head (1) is provided with an anti-disassembly mechanism, which comprises an inner 12-angle groove (3) opened on the upper surface of the bolt head (1), and the bolt is unlocked by inserting a professional tool into the inner 12-angle groove (3).

2. The tamper-proof and theft-proof bolt according to claim 1, wherein: The twelve angle surfaces of the inner 12-angle groove (3) are uniformly distributed.

3. The tamper-resistant security bolt of claim 1, wherein: The inner bottom wall at the hole center of the inner 12-angle groove (3) is fixedly connected with an anti-theft column (4).

4. The tamper-proof and theft-proof bolt according to claim 1, wherein: The anti-disassembly mechanism further comprises a fastening concave tube (5) movably sleeved on the outer surface of the bolt rod (2), the lower surface of the fastening concave tube (5) is made of rubber material, and the upper end of the fastening concave tube (5) is movably sleeved on the outer surface of the bolt head (1).

5. The tamper-resistant security bolt of claim 4, wherein: The anti-disassembly mechanism further comprises a movable groove (6) annularly and arrayedly distributed and opened on the outer surface of the bolt head (1), and the inner wall of the movable groove (6) is fixedly connected with a buffer telescopic rod (7) provided with a buffer spring.

6. The tamper-proof and theft-proof bolt according to claim 5, wherein: The anti-disassembly mechanism further comprises a locking ball (8) fixedly connected on the surface of the telescopic end of the buffer telescopic rod (7), the inner surface of the fastening concave tube (5) is provided with a ratchet groove (9), the locking ball (8) is in sliding connection with the inner surface of the ratchet groove (9), the outer surface of the bolt head (1) is annularly and arrayedly distributed and fixedly connected with a ratchet block (10), and the outer surface of the ratchet block (10) is in sliding connection with the inner surface of the ratchet groove (9).

7. The tamper-proof and theft-proof bolt according to claim 6, characterized in that: The screwing direction of the bolt rod (2) is opposite to the unlocking direction of the bolt head (1).

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