CN201246394Y

CN201246394Y - Multifunctional anti-theft bolt and nut

Info

Publication number: CN201246394Y
Application number: CNU2008200273649U
Authority: CN
Inventors: 吴吉林; 冯虎; 熊纪峰; 丁士新; 王春梅; 杜风波; 董睿; 将小兵; 张红梅; 刘志武
Original assignee: 吴吉林
Priority date: 2008-08-27
Filing date: 2008-08-27
Publication date: 2009-05-27
Anticipated expiration: 2018-08-27

Abstract

The utility model discloses a multifunctional theftproof bolt and a multifunctional theftproof nut which serve the functions of detachability, loosening-prevention and shock absorption, and consist of a ratchet-shaped blot and a ratchet-shaped nut. The multifunctional theftproof bolt and the multifunctional theftproof nut are designed in two structures including an anti-looseness type and a common type, wherein, the outline of the bolt head of the common type ratchet-shaped blot which is a cone with steps is the same as the outline of the common type ratchet-shaped nut; ratchet grooves are freely formed on the sides of the cones in clockwise direction; the angles of the ratchet grooves form a clockwise stress surface; the amount of the ratchet grooves and the depth of the ratchet grooves are dependant on the size of a torque; the ratchet grooves can be formed in any positions to achieve a better stress and theftproof effect; and in the anti-looseness type, the depth of the ratchet grooves is deepened in the cone steps, a socket is formed at the top end of the inner part of the ratchet-shaped nut, and an anti-looseness shockproof gasket which is made of flexible materials is arranged in the socket.

Description

The multifunctional burglary-resistant screw bolt and nut

One, technical field

The utility model relates to a kind of anti-theft bolt and nut, relates in particular to a kind of multifunctional burglary-resistant screw bolt and nut.

Two, technical background

The kind of anti-theft bolt and nut is a lot of at present, mainly to change the profile of bolt head and nut, can't reach antitheft purpose with the general tool dismounting; Can be divided into non-dismountable and detachable two kinds by the dismounting mode, non-removable bolt, nut utilize special tool to install, and disposable use is moved or during service equipment, it can only be destroyed at needs, i.e. waste increases workload again; Dismountable bolt, nut utilize supporting instrument dismounting, can realize antitheft and two purposes of repeated use, but because bolt, nut, instrument are required by anti theft design and the restriction of processing conditions, during use, pretightening force does not reach the required standard of screw thread screw-down torque; There are a common defective in bolt, the nut of these two kinds dismounting modes, do not have anti-loose and the against shock function.

Three, summary of the invention

The technical problems to be solved in the utility model is to improve the shortcoming and defect of prior art, provides a kind of multifunctional burglary-resistant screw bolt and nut with detachable, anti-loose and against shock.

The technological scheme that the utility model is dealt with problems is a kind of multifunctional burglary-resistant screw bolt and nut, is made up of ratchet-shaped bolt and ratchet-shaped nut.The ratchet-shaped bolt comprises bolt head and screw rod; The ratchet-shaped nut is tapped hollow cone body.The bolt head of ratchet-shaped bolt is identical with ratchet-shaped nut profile, is cone with the level, and general tools such as pipe wrench, spanner can't be exerted oneself in clamping; Cone side clockwise direction has ratchet slot arbitrarily, and the angle of ratchet slot constitutes clockwise ratchet stress surface, can be fastening, and when pine was unloaded counterclockwise, ratchet can't be stressed, can not unload pine, can only utilize kit could realize loading and unloading; The groove number and the degree of depth of ratchet slot are decided according to the torque of bolt, and moment of torsion is many, the ratchet groove depth of ratchet slot number greatly then, and the position of ratchet slot is provided with arbitrarily, to reach better stressed and anti-theft effect.The utility model is designed to locking off-type and two kinds of structures of plain edition (figure is locking off-type) as required.Locking off-type design is set about from two aspects: on the one hand the degree of depth of ratchet-shaped bolt and ratchet-shaped nut ratchet slot is deepened in the step of cone, in step, form clockwise ratchet slot, ratchet slot and fastening surface friction drag are little when fastening, and when under conditions such as vibrations, working, ratchet slot in the step and fastening very big resistance of formation under the effect of ratchet, thus prevent that bolt from getting loose; Locking, antivibration pad (as nylon, plastics) that the flexible material making is arranged in ratchet-shaped nut inner thread roof anchorage on the other hand, when screw thread is tightened to locking, antivibration pad position, portion's thread making within it because the difference of material contracts rate, reaches nut anti-looseness, shockproof purpose; The ratchet slot degree of depth of plain edition design is not deepened in the step of cone, and step and fastening are smooth; Ratchet-shaped nut cone internal thread top is locking, the antivibration pad of fixing flexible material not.These two kinds of designs also can be widely used on the screw.The utility model its advantage compared with the prior art is:

1, dismantled and assembled, theftproof performance is good;

2, have anti-loose and the against shock function;

3, pretightening force reaches the required standard of screw thread screw-down torque.

Four, description of drawings

Fig. 1 is the structural representation of the utility model multifunctional burglary-resistant screw bolt and nut;

Fig. 2 is the plan view of Fig. 1 ratchet-shaped bolt;

Fig. 3 is the side view of Fig. 2;

Fig. 4 is the plan view of Fig. 2;

Fig. 5 is the structural representation of Fig. 1 ratchet-shaped nut;

Fig. 6 is the side view of Fig. 5;

Fig. 7 is the plan view of Fig. 5.

1. ratchet-shaped bolts, 2. ratchet-shaped nut among the figure; 1-1. bolt head, the 1-2. screw rod; 2-1. locking, antivibration pad.

Five, concrete enforcement

Referring to Fig. 1 to Fig. 7, the technological scheme that the utility model is dealt with problems is a kind of multifunctional burglary-resistant screw bolt and nut, is made up of ratchet-shaped bolt 1 and ratchet-shaped nut 2.Ratchet-shaped bolt 1 comprises bolt head 1-1 and screw rod 1-2; Bolt head 1-1 is a cone with the level, clockwise direction arbitrary position, cone side has ratchet slot, the groove number of ratchet slot is more than 1, (figure is 2 of symmetry), the angle of ratchet slot is 30---90 degree, the groove number and the degree of depth of ratchet slot are decided according to the torque of bolt, and moment of torsion is many, the ratchet groove depth of ratchet slot number greatly then.When the anti-tripping bolt of needs, the degree of depth of ratchet slot is added in the step that is deep to cone, in step, form clockwise ratchet slot.

Ratchet-shaped nut 2 is a hollow cone body with the level, there is screw thread inside, clockwise direction arbitrary position, side has ratchet slot, the groove number of ratchet slot is more than 1, (figure is 2 of symmetry), the angle of ratchet slot is 30---90 degree, and the groove number and the degree of depth of ratchet slot are decided according to the torque of nut, and moment of torsion is many, the ratchet groove depth of ratchet slot number greatly then.When the anti-tripping nut of needs, the degree of depth of ratchet slot is added in the step that is deep to cone, in step, form clockwise ratchet slot; There is a groove on ratchet-shaped nut 2 internal thread tops, and the groove internal fixation is locking, antivibration pad 2-1, and locking, antivibration pad 2-1 is the pad that flexible material is made.

Claims

1, a kind of multifunctional burglary-resistant screw bolt and nut is made up of ratchet-shaped bolt (1) and ratchet-shaped nut (2); The bolt head (1-1) of ratchet-shaped bolt (1) is identical with the profile of ratchet-shaped nut (2), be cone with the level, cone side clockwise direction has ratchet slot arbitrarily, ratchet slot can be deepened in step during, against shock anti-loose when needs, the angle of ratchet slot constitutes clockwise ratchet stress surface, and the groove number and the degree of depth of ratchet slot are decided according to the torque of bolt; Ratchet-shaped nut (2) is a hollow cone body with the level, and there is screw thread inside, and threaded tip has a groove.

2, according to the described multifunctional burglary-resistant screw bolt and nut of claim 1, it is characterized in that described ratchet-shaped bolt (1) comprises bolt head (1-1) and screw rod (1-2), bolt head (1-1) is a cone with the level, and clockwise direction arbitrary position, cone side has ratchet slot.

3, according to the described multifunctional burglary-resistant screw bolt and nut of claim 2, it is characterized in that the ratchet slot of described ratchet-shaped bolt (1), the groove number is more than 1, and angle is 30---and 90 degree, the degree of depth is to the step of cone.

4, according to the described multifunctional burglary-resistant screw bolt and nut of claim 1, it is characterized in that described ratchet-shaped nut (2) is a hollow cone body with the level, the clockwise direction arbitrary position, side of cone has ratchet slot.

5, according to the described multifunctional burglary-resistant screw bolt and nut of claim 4, it is characterized in that the ratchet slot of described ratchet-shaped nut (2), the groove number is more than 1, and angle is 30---and 90 degree, the degree of depth is to the step of cone.

6, according to the described multifunctional burglary-resistant screw bolt and nut of claim 1, it is characterized in that there is screw thread described ratchet-shaped nut (2) inside, threaded tip has a groove, and the groove internal fixation is locking, antivibration pad (2-1).