CN201057210Y

CN201057210Y - Improved structure of anti-theft anti-loose bolt

Info

Publication number: CN201057210Y
Application number: CNU2007201478374U
Authority: CN
Inventors: 林成懋
Original assignee: DEGANG Co Ltd
Current assignee: DEGANG Co Ltd
Priority date: 2007-06-01
Filing date: 2007-06-01
Publication date: 2008-05-07
Anticipated expiration: 2017-06-01

Abstract

The utility model discloses an improved structure of an anti-theft anti-loosing bolt, which comprises a shim and a bolt; the shim is provided with a through hole in the center and at the top with at lease one first wedge-shaped surface that is formed by a unidirectional wedge-shaped teeth, which consists of an inclined surface and a vertical retaining surface; the bottom of the shim is provided with at least one pointed insertion strip that is arranged in a radial way; the screw consists of a screw head and a bolt; the screw head takes the shape of a smooth cone, with a round concave part that is enclosed by a convex ring at the top; two or over two ratchets are arranged in the concave part for a special tool to be used in combination for fastening; a second wedge-shaped surface that is corresponding to the first wedge-shaped surface of the shim is formed at the bottom of the screw head. The special tool is needed by the utility model to promote from the ratchet the bolt for fastening, and reverse force application for retraction is impossible, thereby making available the effects of anti-loosing and anti-theft.

Description

Antitheft chek bolt structure-improved

Technical field

The utility model relates to a kind of antitheft chek bolt structure-improved, the taper bolt crown face that refers in particular to a kind of bolt has been made at least one ratchet, and a two sides has the pad of wedge shape inclined-plane and arris fillet respectively, after being screwed, bolt is difficult for withdrawing from, and a kind of antitheft chek bolt structure-improved that can't use ordinary hand tools to outward winding.

Background technique

Please refer to shown in Figure 1ly, is known chek bolt structure, and main system comprises a bolt 10 and a pad 20; Wherein this pad 20 is circular external form, external form is provided with at least one recess 24, wherein one side is equipped with by at least one chisel teeth 22 formed first sphenoid surface 21, this chisel teeth 22 is made of a block face 221 and an inclined-plane 222, another side then is provided with at least one arris fillet 23, and the section configuration of this arris fillet 23 then screws the right-angled triangle of direction along bolt 10 for the inclined-plane; This bolt 10 has a bolt head 11 and screw rod 12, and these bolt head 11 bottom surfaces form corresponding second sphenoid surface 111 of first sphenoid surface, 21 appearance with this pad 20.By this, when bolt 10 screwed, the block face between two relative sphenoid surface leaned on mutually and rotates synchronously easily, along with bolt screwing gradually, the pressure that pad 20 puts on workpiece 30 surfaces also increases gradually, till can't rotating, and makes arris fillet 23 embed in the workpiece 30; And when withdrawing from, compressing is interfered on the inclined-plane between two relative sphenoid surface each other, adds that arris fillet 23 embeds the stopping effect of workpiece, increases the degree of difficulty that bolt screws out, and bolt is screwed easily, withdraw from difficulty and reach locking effect; In case of necessity, only can could implement to loosen to the bolt head 11 and the pad recess 24 places while application of force, therefore anti-theft effect is arranged simultaneously with special hand tools.

Though on carry known bolt arrangement and can make bolt reach the anti-loosing effect of certain degree, this bolt head 11 of thought is carried on as before and is had the configuration that can rely on the application of force for hand tools, bolt still has by the rude and unreasonable application of force and screws out possibility, so this known loosing and theft preventing bolt structure should have and can improve part.

The model utility content

Technical problem to be solved in the utility model is that at the deficiencies in the prior art, providing a kind of needs to cooperate special tool fastening, and the antitheft chek bolt structure-improved with anti-loose anti-theft effect.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of antitheft chek bolt structure-improved, include a pad and a bolt, these pad central authorities are provided with a perforation, end face has been made formed first sphenoid surface of at least one unidirectional chisel teeth, and this unidirectional wedge shape dentition is made of an inclined-plane and a vertical block face; The pad bottom surface is provided with the arris fillet of at least one radial arrangement; This bolt has bolt head and screw rod, and the external form of this bolt head forms smooth circular cone moulding, and the bolt head end face has a circular depressions by bulge loop institute corral, makes ratchet more than two or two in this recess, cooperates for a special tool that to screw spiral shell solid; The bolt head bottom surface is formed with corresponding second sphenoid surface of the first sphenoid surface appearance with pad.

The inclined-plane of this unidirectional chisel teeth is under the angle of the same center of circle, and outer rim is identical with the height of inner edge.This arris fillet is made of an inclined-plane and a vertical wall, and this inclined-plane is provided with direction along screwing direction.This ratchet is that five equilibrium is arranged, or is not five equilibrium arrangement.This special tool one end has the configuration that can be sticked in ratchet.

Compared with prior art, the beneficial effects of the utility model are: the external form of the utility model bolt head forms smooth circular cone moulding, the bolt head end face has a circular depressions by bulge loop institute corral, make ratchet more than two or two in this recess, the bolt head bottom surface is formed with corresponding second sphenoid surface of the first sphenoid surface appearance with pad, need utilize special tool to drive bolt and screw spiral shell admittedly, and oppositely the application of force withdraws from, and reaches locking and prevent to steal to tear function open by the ratchet place.

Description of drawings

Fig. 1 is known bolt arrangement schematic appearance.

Fig. 2 is a perspective view of the present utility model.

Fig. 3 is the utility model sectional schematic diagram.

Fig. 4 is that the utility model is with the solid schematic representation of special tool spiral shell.

Label declaration:

10. bolt 11. bolt heads

111. second sphenoid surface, 12. screw rods

20. pad 21. first sphenoid surface

22. chisel teeth 221. block faces

222. inclined-plane 23. arris fillets

30. workpiece 40. pads

42. first sphenoid surface 41. bore a hole

43. unidirectional chisel teeth 431. inclined-planes

432. block face 44. arris fillets

441. inclined-plane 442. vertical walls

45. recess 50. bolts

51. bolt head 511. bulge loops

512. recess 513. ratchets

52. second sphenoid surface, 53. screw rods

60. workpiece 70. special tools

Embodiment

See also shown in Figure 2ly, the utility model system includes a pad 40 and a bolt 50, wherein:

This pad 40 is the circular gasket that central authorities are provided with perforation 41, pad 40 end faces are at least one unidirectional chisel teeth 43 formed first sphenoid surface 42, this unidirectional chisel teeth 43 is made of an inclined-plane 431 and a vertical block face 432, under the angle of the same center of circle, the outer rim on this inclined-plane 431 is identical with the height of inner edge; Pad 40 bottom surfaces are provided with the arris fillet 44 of at least one radial arrangement; The section configuration system of this arris fillet 44 is made of an inclined-plane 441 and a vertical wall 442, and this inclined-plane 441 is along screwing the direction setting; Above-mentioned pad 40 circular outer rims are provided with at least one recess 45, can dismantle for a special tool mat power.

This bolt 50 has bolt head 51 and screw rod 53, the external form system of this bolt head 51 forms smooth circular cone moulding, bolt head 51 end faces have a circular depressions 512 by 511 corrals of bulge loop, make the ratchet 513 of the five equilibrium more than two or two in this recess 512, it is solid to screw spiral shell for another special tool mat power; Bolt head 51 bottom surfaces are formed with corresponding second sphenoid surface 52 of first sphenoid surface, 42 appearance with pad 40.

Refer again to Fig. 3 and cooperate shown in Figure 4, the utility model is when combination lock is fixed in workpiece 60 in addition according to said structure, utilize an end to have the special tool 70 that configuration can be sticked in 513 ones of ratchets, closing increases the locating effect of special tool 70 in the bolt head top and by bulge loop 511, and then is stablized the application of force up to bolton; When bolt 50 had the trend of counter-rotating, the inclined-plane between two sphenoid surface pushed away mutually, and interlock is fastening more towards the arris fillet 44 on workpiece 60 surfaces to make pad 40, and can reach locking effect; Because the circular cone appearance of bolt head 51 can't make general purpose tool mat power or clamping, and unidirectional ratchet 513 also can't oppositely withdraw from instrument, and can produce antitheft effect; Disassemble in case of necessity, answer the mat special tool to block recess 45 places and the application of force (not shown) of pad 40, otherwise bolt can't be unscrewed.

When preventing actual use, a certain special tool is general, above-mentioned ratchet 513 more than two can be designed to not reciprocity angle.

In sum; the smooth taper shape of bolt head external form system's formation of the present utility model; can provide a kind of and prevent that intentionally the personage steals the anti-theft feature of tearing bolt open; and has excellent anti-loosing effect; really can provide a kind of tool locking and have antitheft bolt arrangement concurrently; can satisfy general dealer's demand; the whence proposes patent application in accordance with the law; only, though the utility model illustrates that with aforementioned preferred embodiment so it is not in order to limit the utility model; anyly be familiar with this skill person; in not breaking away from the utility model spirit and scope, when being retouched and revise, therefore protection domain of the present utility model is as the criterion when looking claims person of defining.

Claims

1. an antitheft chek bolt structure-improved includes a pad and a bolt, and these pad central authorities are provided with a perforation, and end face has been made formed first sphenoid surface of at least one unidirectional chisel teeth, and this unidirectional wedge shape dentition is made of an inclined-plane and a vertical block face; The pad bottom surface is provided with the arris fillet of at least one radial arrangement; It is characterized in that:

This bolt has bolt head and screw rod, and the external form of this bolt head forms smooth circular cone moulding, and the bolt head end face has a circular depressions by bulge loop institute corral, makes ratchet more than two or two in this recess, cooperates for a special tool that to screw spiral shell solid; The bolt head bottom surface is formed with corresponding second sphenoid surface of the first sphenoid surface appearance with pad.

2. antitheft chek bolt structure-improved as claimed in claim 1 is characterized in that, the inclined-plane of this unidirectional chisel teeth is under the angle of the same center of circle, and outer rim is identical with the height of inner edge.

3. antitheft chek bolt structure-improved as claimed in claim 1 is characterized in that this arris fillet is made of an inclined-plane and a vertical wall, and this inclined-plane is provided with direction along screwing direction.

4. antitheft chek bolt structure-improved as claimed in claim 1 is characterized in that, this ratchet is that five equilibrium is arranged.

5. antitheft chek bolt structure-improved as claimed in claim 1 is characterized in that, this ratchet is not five equilibrium arrangement.

6. antitheft chek bolt structure-improved as claimed in claim 1 is characterized in that, this special tool one end has the configuration that can be sticked in ratchet.