CN201129349Y

CN201129349Y - Combined fastening break clip type anti-unloading anti-theft nut

Info

Publication number: CN201129349Y
Application number: CNU2007201248654U
Authority: CN
Inventors: 崔宝林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-30
Filing date: 2007-07-30
Publication date: 2008-10-08
Anticipated expiration: 2017-07-30

Abstract

The utility model discloses a combined fastening anti-removing and burglar-proof cage nut, which comprises an inner cover and an outer cover, wherein the inner cover is composed of a polygonal nut head, a connecting ring to be twisted off and an inner core, the polygonal nut head is provided with a polygonal nut head internal hole, the internal wall of the inner core has threaded holes, the outer cover is equipped with an outer cover inner hole, the external wall of the inner core of the inner cover is 2-6 cylindrical steps which form a big end up structure, the external wall of the outer cover is a polygon, the outer cover inner hole is a cylindrical step, the cylindrical step number of the outer cover inner hole is the same with that of the inner core external wall, and the outer cover internal wall is in clearance fit with the inner core external wall. The combined fastening anti-removing and burglar-proof cage nut has simple structure and convenient usage, can not be removed by a normal tool and can be removed by a special tool if necessary, and when being removed, the nut does not damage screw bolts and fastened elements, which is in particular adapted for fastening facilities of vehicle license plates, electric power, railway, nuclear power, express highway and the like.

Description

Make up the anti-anti-theft nut that unloads of fastening disconnected cassette

Technical field

The utility model relates to thread connector, more specifically relates to the anti-anti-theft nut that unloads of the fastening disconnected cassette of a kind of combination.

Background technique

As everyone knows, common hexagon nut, square nut, round nut use general tool to get final product fastening and dismounting.But under some particular environment, people do not allow fastening good nut to dismantle privately, in order to avoid cause fastened article lost and damage.For this reason, people have invented some anti-anti-theft nuts that unload in recent years, though these prevent that unloading anti-theft nut has certain anti-anti-theft feature that unloads, the greatest drawback that exists is exactly destructively to force dismounting, and this has caused great difficulty to normal necessary dismounting.As, the day for announcing is that August 27, notification number in 2003 are that CN2568869, name are called a kind of anti-anti-theft nut that unloads of " the antitheft solid split nut of rated torque ", it is made up of interior cover and overcoat, the top of interior cover is the polygonal nut head, and the middle and upper part is the dangerouse cross-section of ring-type, also can be referred to as connecting ring to be twisted off, the bottom is the tubular shape inner core, tubular shape inner core inwall is a screw thread, has outer chamfering, tubular shape inner core that several breach are vertically arranged down; The profile of overcoat is cylindrical, be with endoporus outward, there is interior chamfering the endoporus lower end, the antitheft solid split nut of this rated torque is when fastening, the interior chamfering of overcoat makes the screw thread generation deformation of inwall by the outer chamfering of tubular shape inner core, nut is locked on the bolt admittedly, simultaneously, can separates from the dangerouse cross-section disconnection of ring-type with the tubular shape inner core when polygonal nut head affords rated torque.Though this antitheft solid split nut is feasible, during this nut of necessity dismounting, can only damage its nuts and bolt, the measure of this antitheft solid split nut, the screw thread that is equivalent to the most original destruction bolt prevents the measure that nut withdraws from, the user is difficult to accept, therefore, have much room for improvement.

Summary of the invention

The purpose of this utility model is improved the deficiency of the antitheft solid split nut of existing rated torque, and is provided the fastening disconnected cassette of a kind of combination the anti-anti-theft nut that unloads.

The technical solution of the utility model: the anti-anti-theft nut that unloads of the fastening disconnected cassette of a kind of combination, cover and overcoat in comprising, interior cover is made of polygonal nut head, connecting ring to be twisted off, inner core, the polygonal nut head is provided with polygonal nut head endoporus, the inwall of inner core is a tapped hole, be with the overcoat endoporus outward, the interior outer core of the inner core of cover was a 2-6 level cylinder step in it was described, and the cylinder step is up big and down small; The outer casing outer wall of described overcoat is a polygonal, and the overcoat endoporus of overcoat is the cylinder step, and the progression of the cylinder step of overcoat endoporus is identical with the progression of the cylinder step of interior outer core; The outer casing inner wall of overcoat and interior outer core are Spielpassung.

The fastening disconnected cassette of above-mentioned described combination is anti-to unload anti-theft nut, and the polygonal nut head of described overcoat and the outer casing outer wall of overcoat are hexagon.

The fastening disconnected cassette of above-mentioned described combination is anti-to unload anti-theft nut, described connecting ring to be twisted off, and its ring wall is thick to be 0.10-1.5mm, the ring wall height is 0.10-1mm.

The fastening disconnected cassette of combination described in the utility model is anti-to unload anti-theft nut, and described overcoat and interior cover are fastened on the bolt, and the polygonal nut head is waiting that with inner core twisting off the disconnection of connecting ring place separates, rotary sleeve, inner core and bolt are motionless, swivel bolt, and inner core and bolt are not done relative movement.

The anti-anti-theft nut that unloads of the fastening disconnected cassette of combination described in the utility model, in it cover wait twist off the wall thickness of connecting ring and the high value of ring wall is to determine according to the rated torque size that this nut should bear, rated torque is big, ring wall is thick, rated torque is little, ring wall is thick thinner, the size of its ring wall value is accurately controlled by the last cylinder step of the interior outer core of polygonal nut head endoporus on the processing polygonal nut head and processing inner core, and the ring wall that the radius that the radius of the last cylinder step of the interior outer core of inner core subtracts the polygonal nut head endoporus on the polygonal nut head equals to wait to twist off connecting ring is thick.

The fastening disconnected cassette of combination described in the utility model is anti-to unload anti-theft nut, its alleged combination is fastening be because of the following working surface of the following working surface of inner core and overcoat simultaneously to fastener work name; Its alleged disconnected cassette is when affording rated torque because of interior cover, and polygonal nut head and inner core disconnect and separating from waiting to twist off connecting ring, and inner core is stuck in the overcoat and do not withdrawed from, and names.

The beneficial effects of the utility model: nut structure of the present utility model is simple, and is easy to use, and general tool can't be dismantled, and in the time must dismantling, the available dedicated instrument is dismantled, and during dismounting, does not damage bolt and fastener.Be specially adapted to the fastening of facilities such as vehicle license plate, electric power, railway, nuclear power, expressway.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is a working state figure of the present utility model;

Fig. 4 is an interior nested structure schematic representation of the present utility model;

Fig. 5 is a jacket structure schematic representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment 1: a kind of external form is the anti-anti-theft nut that unloads of the fastening disconnected cassette of the combination of hexagonal.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the anti-anti-theft nut that unloads of the fastening disconnected cassette of a kind of combination, cover 1 and overcoat 2 in comprising, in cover 1 by polygonal nut head 14, wait to twist off connecting ring 15, inner core 16 is formed, polygonal nut head 14 is provided with polygonal nut head endoporus 13, the inwall of inner core 16 is a tapped hole 12, overcoat 2 has overcoat endoporus 24, the interior outer core 11 of the inner core 16 of cover 1 was a 2-6 level cylinder step in it was described, and 3 grades preferable, and the cylinder step is up big and down small; The outer casing outer wall 21 of described overcoat 2 is a polygonal, and the overcoat endoporus 24 of overcoat 2 is the cylinder step, and the progression of the cylinder step of overcoat endoporus 24 is identical with the progression of the cylinder step of interior outer core 11; The outer casing inner wall 22 and the interior outer core 11 of overcoat 2 are Spielpassung.The polygonal nut head 14 of interior cover 1 and the outer casing outer wall 21 of overcoat 2 are hexagon.This nut is made with metallic material, and inwall is that tapped hole 12 is standard thread, and the diameter of thread of this nut, boundary dimension are with reference to relative national standards.Describedly wait to twist off the wall thickness of connecting ring 15 and the high value of ring wall should be determined according to the rated torque size that this nut bears, rated torque is big, and ring wall is thick, and rated torque is little, ring wall is thick less, and generally ring wall is thick gets final product in 0.1-1.5mm, ring wall high value in 0.1-1mm.Described overcoat 2 and interior cover 1 are fastened on the bolt 3 simultaneously, and the following working surface 17 of inner core and the following working surface of overcoat 23 contact with fastener 4 simultaneously,

When reaching rated torque, polygonal nut head 14 is waiting that with inner core 16 twisting off the disconnection of connecting ring 15 places separates, take off polygonal nut head 14, inner core 16 is hidden in the overcoat 2, when rotary sleeve 2, inner core 16 and bolt 3 are motionless, be that overcoat 2 can only be around inner core 16 idle running, this spin nut can't be withdrawed from, when outwards pulling out overcoat 2, under the extruding on inner core 16 round platform rank, overcoat 2 can't be outwards extracted, when swivel bolt 3, inner core 16 is not done relative movement with bolt 3, can't withdraw from overcoat 2 and inner core 16, thereby plays anti-dismounting, antitheft effect.In the time must unclamping this fastening nut, can adopt special instrument, overcoat 2 and inner core 16 are connected as a single entity, inner core 16 and overcoat 2 are unclamped take off, and do not damage its bolt 3.The finished product that this is routine, the external form of the overcoat 2 and the integral body of interior cover 1 is identical with the external form of the hexagon nut of national same specification.

Embodiment 2: a kind of external form is the square anti-anti-theft nut that unloads of the fastening disconnected cassette of combination.The polygonal nut head 14 of the interior cover 1 of this example and the outer casing outer wall of overcoat 2 21 are square.Other structure is substantially the same manner as Example 1, and the cylinder step of the interior outer core 11 of its inner core 16 is the 2-6 level, and the progression of the cylinder step of the overcoat endoporus 24 of overcoat 2 is identical with the progression of the cylinder step of interior outer core 11, and is corresponding one by one.Do not describe in detail.

Embodiment 3: a kind of external form is unloaded anti-theft nut for the circular fastening disconnected cassette of combination is anti-.Round nut also is a kind of tightening nut that extensively adopts.The polygonal nut head 14 of the interior cover 1 of this example and the outer casing outer wall of overcoat 2 21 are cylindrical, and columniform outer surface has pod.Other structure is substantially the same manner as Example 1, does not describe in detail.

In like manner, the fastening disconnected cassette of combination described in the utility model is anti-to unload anti-theft nut, and its polygonal nut head 14 can be made into hexagon or square, circular, polygonal, and the shape of the outer casing outer wall 21 of overcoat 2 can be made into different shapes.

The anti-anti-theft nut that unloads of the fastening disconnected cassette of above-mentioned combination, interior cover 1 is under the effect of rated torque, and polygonal nut head 14 and inner core 16 are from waiting that twisting off connecting ring 15 is twisted off, and fracture puts down.Wait to twist off the wall thickness of connecting ring 15 and ring is high finishes by adding accurately to control man-hour.

Claims

1. the fastening disconnected cassette of combination prevents unloading anti-theft nut, comprise interior cover (1) and overcoat (2), interior cover (1) is made of polygonal nut head (14), connecting ring to be twisted off (15), inner core (16), polygonal nut head (14) is provided with polygonal nut head endoporus (13), the inwall of inner core (16) is tapped hole (12), overcoat (2) has overcoat endoporus (24), it is characterized in that: the interior outer core (11) of the inner core (16) of cover (1) is a 2-6 level cylinder step in described, and the cylinder step is up big and down small; The outer casing outer wall (21) of described overcoat (2) is a polygonal, and the overcoat endoporus (24) of overcoat (2) is the cylinder step, and the progression of the cylinder step of overcoat endoporus (24) is identical with the progression of the cylinder step of interior outer core (11); The outer casing inner wall (22) of overcoat (2) is a Spielpassung with interior outer core (11).

2. unload anti-theft nut by the fastening disconnected cassette of the described combination of claim 1 is anti-, it is characterized in that: the polygonal nut head (14) of described overcoat (1) and the outer casing outer wall (21) of overcoat (2) are hexagon.

3. prevent unloading anti-theft nut by claim 1 or the fastening disconnected cassette of 2 described combinations, it is characterized in that: described connecting ring to be twisted off (15), its ring wall is thick to be 0.10-1.5mm, the ring wall height is 0.10-1mm.

4. by claim 1 or the anti-anti-theft nut that unloads of the fastening disconnected cassette of 2 described combinations, it is characterized in that: described overcoat (1) and interior cover (2) are fastened on the bolt, polygonal nut head (14) is located to disconnect at connecting ring to be twisted off (15) with inner core (16) and is separated, rotary sleeve (2), inner core (16) and bolt (3) are motionless, swivel bolt (3), inner core (16) is not done relative movement with bolt (3).

5. by the anti-anti-theft nut that unloads of the fastening disconnected cassette of the described combination of claim 3, it is characterized in that: described overcoat (1) and interior cover (2) are fastened on the bolt, polygonal nut head (14) is located to disconnect at connecting ring to be twisted off (15) with inner core (16) and is separated, rotary sleeve (2), inner core (16) and bolt (3) are motionless, swivel bolt (3), inner core (16) is not done relative movement with bolt (3).