CN104179780A

CN104179780A - Taper pin type antitheft nut

Info

Publication number: CN104179780A
Application number: CN201410457881.XA
Authority: CN
Inventors: 何天麟
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-18
Filing date: 2014-09-09
Publication date: 2014-12-03
Anticipated expiration: 2034-09-09
Also published as: CN103557223A; CN104179780B

Abstract

A taper pin type anti-theft nut is formed by a nut body, a taper pin and a check ring. A clearance is eliminated by means of taper fit, two mechanical tight braking motions in different directions are generated under the impetus of corkscrew force formed by twisting the nut body in the forward direction and the reverse direction, and the technical effect of secondary tight braking is achieved.

Description

Pushing-needle type anti-theft nut

Affiliated technical field:

The present invention relates to a kind of machanical fastener, particularly a kind of anti-theft nut.

Background technique:

For the patent of invention pushing-needle type anti-theft nut of application on February 27th, 2012, number of patent application 201210044098.1 supplements, improves and explanation.

Summary of the invention:

The present invention is on the basis of pushing-needle type anti-theft nut, puts forth effort end face front end a packing ring is set improves its installation rate at mounting nuts body.

The technical problem solving;

The present invention will solve the awl of appearing sticking in advance in groove and be subject to being squeezed in groove of spiral power and occur directly affecting fan-shaped rolling awl and be squeezed into groove.

The technological scheme of taking is;

Pushing-needle type anti-theft nut is made up of nut body, awl and three parts of packing ring.Its feature of said nut body; , on the internal thread hole wall of plain nut, one or two groove is set.This groove is made up of the slope of two different direction, radially along internal spiral direction arc slope from the superficial to the deep, deep end can hold awl, is axially to put forth effort end face to back end by going deep into shallow slope from nut body, and its ramp rate is identical with the tapering of awl.Groove shape feature is that to put forth effort end face at nut body be large arc slope, and ear end face is little arc slope, and cell wall is by the axial slope of nut body, the arc slopes of two different sizes to be connected, and is the groove of a upper and lower break-through.Therefore, to be greater than trench length be good to assembling awl length.Can retain nut body ear end face screw thread and be convenient to machining, awl can be hidden again.Its feature of said awl; Be a taper pin with hardness, said packing ring is a plain washer.

Assembly features: in order to prevent awl obscission in installation process, therefore with glue and butter, awl is sticked in groove in advance, its awl must be appeared, just can guarantee internal and external threads matching gap, do not affect any spinning in and out screw rod of nut body, awl is appeared more, and it is also just lighter that nut body screws in screw rod.

Mounting characteristic: before nut body with awl is installed, first insert a packing ring to screw rod, make awl not be subject to the extruding of spiral power and occur tilting, reach the object of quick mounting.The awl of appearing is to rely on fastening end face (fastening nut) to stop that the extruding of packing ring and pretightening force enters groove, by coordinating of the taper of awl and the axial tapering of groove getting rid of internal and external threads fit tolerance and gap.When awl coordinates with groove while there is interference, the nut body on screw rod is subject to pretightening force extruding awl, the tight structure of immediately nut body fixedly being stopped.

Feature after installation: take awl to rely on washer face and groove shaft must not come off to slope control.Positive and negative spiral of twisting nut body try hard to recommend moving under, the machinery that occurs two different direction tight action of stopping, reaches axially and the secondary tight technique effect of stopping respectively radially.

Removal feature: under anti-effect of twisting spiral power, radial strut slope is squeezed into root of the tooth by awl from outside thread cusp jointly with axial slope, and extend to screw rod center, to use backpitch power to strengthen and deepen the cylindrical of awl and the outside thread of screw rod (cylindrical) two and justify tangent, be characterized in that awl is longer, the area tangent with outside thread is also just larger, and the anti-moment of unloading also just improves thereupon, is twisted into two parts even if can reach screw rod quilt the effect that nut body is also difficult to dismounting.

If groove radial strut slope is constant, axial slope is changed into from nut body ear end face and has and go deep into shallow slope to putting forth effort end face, just can directly awl be poured to groove, its anti-effect of unloading is better, and principle is constant.

Beneficial effect of the present invention;

The present invention is pushing-needle type anti-theft nut, can change antitheft dismounting force moment size according to the thickness volume size awl thickness length of nut body and meet the need of market.

Figure of description;

Fig. 1 assembled in advance awl with nut body (right elevation);

Fig. 2 pushing-needle type anti-theft nut (plan view);

Fig. 3 installs pushing-needle type anti-theft nut (plan view);

Fig. 4 is subject to the pushing-needle type anti-theft nut (plan view) of pretightening force;

Fig. 5 derotation pushing-needle type anti-theft nut (sectional view);

Fig. 6 retains the anti-theft nut (plan view) of nut body ear end face screw thread;

Fig. 7 installs and changes the nut body of groove shaft to slope direction;

In Fig. 1 to Fig. 7;

1 nut body;

2 awls;

3 packing rings;

4 bolts (screw rod);

5 plain nuts;

6 are connected thing;

7 retain the nut body of ear end face screw thread;

8 change the nut body of groove shaft to slope direction;

Embodiment:

Below in conjunction with accompanying drawing, the present invention is specifically described as follows;

Embodiment 1:

Shown in Fig. 1, assembly features: with glue or butter, awl 2 is sticked in nut body 1 groove in advance, its awl 2 must be appeared.

Embodiment 2:

Shown in Fig. 2, pushing-needle type anti-theft nut is made up of nut body 1, awl 2 and 3 three parts of packing ring.

Embodiment 3:

Shown in Fig. 3, mounting characteristic: before pushing-needle type anti-theft nut Fig. 2 is installed, first will be stained with the anti-theft nut body 1 of awl 2 again after screw rod 4 is inserted a packing ring, put forth effort end face packing ring 3 is screwed in to screw rod 4.

Embodiment 4:

Shown in Fig. 4, pretension feature: the awl 2 of appearing is to rely on fastening 6 end faces (fastening nut 5) to stop that the extruding of packing ring 3 and pretightening force enters nut body 1 groove.

Embodiment 5:

Shown in Fig. 5, removal feature: under superpower anti-effect of twisting power, groove radial strut slope will be squeezed into root of the tooth by awl 2 from outside thread cusp jointly with axial slope, and extend to screw rod 4 centers, reach without dismountable effect.

Embodiment 6:

As shown in Figure 6, retain anti-theft nut Fig. 6 of ear end face screw thread, its installation method is the same.

Embodiment 7:

Nut body 8 is screwed in to fastening plain nut 5 rear ends, and screw rod 4 part of appearing is fastening, and awl 2 inserts groove, beats directly awl 2 is poured in groove with hand, and the full pitch thread of awl ear end face stops that awl must not come off.

Above-mentioned example limits the present invention never in any form, and the technological scheme that the mode of the equal replacement of all employings or equivalent transformation obtains, within all dropping on protection scope of the present invention.

Claims

1. pushing-needle type anti-theft nut is by nut body, packing ring and three parts of awl with hardness form, said nut body is characterized in that, on the internal thread hole wall of plain nut, one or two groove is set, this cell wall is radially along internal thread Hand of spiral arc slope from the superficial to the deep, deep end can hold awl, axially to put forth effort end face from nut body to have to back end and go deep into shallow slope, its ramp rate is identical with the tapering of awl, the groove of the upper and lower break-through being formed by the slope of two different direction, can retain nut body ear end face screw thread and be convenient to machining.

2. pushing-needle type anti-theft nut according to claim 1; The awl that it is characterized in that sticking in advance in groove must be appeared, awl is to rely on packing ring to stop with the extruding of pretightening force to enter groove, utilize the taper of awl and the axial tapering of groove to get rid of tolerance and gap, positive and negative spiral of twisting nut body try hard to recommend moving under, there is the tight action of stopping of the machinery of two different direction, reach axially and the secondary tight structure of stopping respectively radially.