CN205207394U - Antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball - Google Patents
Antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball Download PDFInfo
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- CN205207394U CN205207394U CN201521087652.XU CN201521087652U CN205207394U CN 205207394 U CN205207394 U CN 205207394U CN 201521087652 U CN201521087652 U CN 201521087652U CN 205207394 U CN205207394 U CN 205207394U
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- nut
- steel ball
- annular knurl
- plug sleeve
- cylindrical
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Abstract
The utility model relates to an antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball. Main the preventing of having now of solving unloads the antitheft nut steel ball or sells the problem that easily drops and make theftproof nature difference. Its characterized in that: the inner wall of nut (1) on open and have at least one recess (2), the cross section of recess (2) is half -circular arc, and recess (2) are built -in has steel ball (4), it has plug sleeve (5) to deploy in the hole of nut (1), plug sleeve (5) upper end is equipped with protruding edge, and plug sleeve (5) are protruding highly is less than nut (1) height along lower extreme cylindrical portion, nut (1) outer wall upper end is equipped with the boss, and the cover has the lantern ring (3) on the outer wall of boss lower part. This antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball's steel ball is difficult for droing, has simple to operate and prevents unloading the effectual characteristics of theftproof.
Description
Technical field
The utility model relates to a kind of axial lock compact form fastening piece, and a kind of circular group is box-like specifically prevents unloading anti-theft nut.
Background technique
Conventional locking prevents that unloading anti-theft fastening piece generally adopts smooth steel ball and smooth pin contacts, because its frictional force is less than normal, cause anti-theft fastening piece rise anti-unload antitheft time, due to pearl, occur between pin and nut skidding or slippage, the anti-theftproof performance that unloads is reduced, when mounted due to high-lift operation cause sometimes smooth pearl, pin come off, make the poor reliability of nut, do not have anti-theft function.
Summary of the invention
Existingly anti-anti-theft nut steel ball is unloaded or pin easily comes off and makes the deficiency of anti-theft difference in order to overcome, the utility model provides a kind of cylindrical combined type annular knurl steel ball to prevent unloading anti-theft nut, the steel ball difficult drop-off unloading anti-theft nut prevented by this cylindrical combined type annular knurl steel ball, has easy for installation and anti-feature of unloading good anti-theft effect.
The technical solution of the utility model is: a kind of cylindrical combined type annular knurl steel ball is anti-unloads anti-theft nut, comprise nut, the inwall of described nut has at least one groove, the cross section of described groove is semicircular arc, and groove is built-in with steel ball, the endoporus inside of described nut is equipped with plug sleeve, and described plug sleeve upper end is provided with convex edge, and the height of lower end, plug sleeve convex edge column part is less than height of nut; Described nut outer wall upper end is provided with boss, and on the outer wall of boss bottom, cover has the collar.
Described collar external diameter is greater than nut upper end boss external diameter, and is Spielpassung between the collar and nut.
Described ball surfaces annular knurl.
Described nut outer surfaces is cylindrical.
The utility model has following beneficial effect: owing to taking such scheme, and the outer surface of nut is cylindrical, and need adopt special spanner when tightening, common wrench cannot turn; The inner hole wall of nut is provided with groove, is provided with plug sleeve again in nut bore, the external diameter of plug sleeve is slightly larger than nut internal diameter, thus plug sleeve difficult drop-off when ensure that nut does not use; When carrying out dismounting, the steel ball in groove slides from the angle of trend semi-circle, is subject to the extruding of nuts and bolt, thus plays and anti-unload anti-theft feature; Hold cylinder place to increase the collar under the nut, because being movable between the collar and nut, thus more playing and anti-ly unload antitheft effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of nut in the utility model.
1-nut in figure, 2-groove, the 3-collar, 4-steel ball, 5-plug sleeve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1, Fig. 2, a kind of cylindrical combined type annular knurl steel ball is anti-unloads anti-theft nut, and comprise nut 1, described nut 1 outer surface is cylindrical, adopts special spanner when tightening.The inwall of described nut 1 has at least one groove 2, the quantity of groove 2 can be 1-4, and the cross section of described groove 2 is semicircular arc, and groove 2 is built-in with steel ball 4, and the degree of depth of described groove 2 and width are all greater than steel ball 4 diameter, steel ball 4 surface knurling.The hardness of described steel ball 4 should reach 35-64HRC, and diameter is no less than 1mm.The endoporus inside of described nut 1 is equipped with plug sleeve 5, described plug sleeve 5 upper periphery is provided with convex edge, and convex edge external diameter is greater than nut 1 internal diameter, and the height of lower end, plug sleeve 5 convex edge column part is less than nut 1 height, when such plug sleeve 5 is placed in nut 1, it is inner that plug sleeve 5 lower end is positioned at nut 1.The external diameter of plug sleeve 5 lower end column part can slightly larger than nut 1 internal diameter, and before nut uses, avoid plug sleeve 5 to come off like this, meanwhile, easy to assembly for making, plug sleeve 5 lower end inwardly can be shrunk to taper.Described nut 1 outer wall upper end is provided with boss, and on the outer wall of boss lower cylindrical, cover has the collar 3, and be Spielpassung between the collar 3 and nut 1, make can mutually rotate therebetween, gap is 0.1-1.0mm.The external diameter of the described collar 3 is greater than nut 1 upper end boss external diameter.
This nut in use, has one end of convex edge to be screwed into outwardly plug sleeve 5 on nut 1, and plug sleeve 5 can skid off from nut 1 endoporus automatically; Form half arc wedge groove between the bolt outside thread of the groove 2 in nut 1 and screw-in, after nut 1 is locked, steel ball 4 is enclosed in groove 2.When by nut 1 unscrewed loose unloading, steel ball 4 can be subject to the friction and Extrusion of bolt and groove 2 immediately, thus form larger coupling mechanism force to the groove 2 direction slippage little with the wedged gap of bolt pattern, add that the collar 3 and nut 1 are movable, can guarantee so artificially cannot be screwed out when nut is not destroyed, play good bilayer and prevent unloading anti-theft feature.
Claims (4)
1. a cylindrical combined type annular knurl steel ball is prevented unloading anti-theft nut, comprise nut (1), be characterised in that: the inwall of described nut (1) has at least one groove (2), the cross section of described groove (2) is semicircular arc, and groove (2) is built-in with steel ball (4), the endoporus inside of described nut (1) is equipped with plug sleeve (5), and described plug sleeve (5) upper end is provided with convex edge, and the height of plug sleeve (5) lower end, convex edge column part is less than nut (1) highly; Described nut (1) outer wall upper end is provided with boss, and on the outer wall of boss bottom, cover has the collar (3).
2. cylindrical combined type annular knurl steel ball according to claim 1 is anti-unloads anti-theft nut, it is characterized in that: the described collar (3) external diameter is greater than nut (1) upper end boss external diameter, and is Spielpassung between the collar (3) and nut (1).
3. cylindrical combined type annular knurl steel ball according to claim 2 is anti-unloads anti-theft nut, it is characterized in that: described steel ball (4) surface knurling.
4. cylindrical combined type annular knurl steel ball according to claim 3 is anti-unloads anti-theft nut, it is characterized in that: described nut (1) outer surface is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087652.XU CN205207394U (en) | 2015-12-23 | 2015-12-23 | Antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087652.XU CN205207394U (en) | 2015-12-23 | 2015-12-23 | Antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207394U true CN205207394U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521087652.XU Active CN205207394U (en) | 2015-12-23 | 2015-12-23 | Antitheft nut is prevented unloading by cylindrical combination formula annular knurl steel ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370700A (en) * | 2015-12-23 | 2016-03-02 | 浙江海力股份有限公司 | Cylindrical combined-type knurled ball anti-detachment and anti-theft nut |
-
2015
- 2015-12-23 CN CN201521087652.XU patent/CN205207394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370700A (en) * | 2015-12-23 | 2016-03-02 | 浙江海力股份有限公司 | Cylindrical combined-type knurled ball anti-detachment and anti-theft nut |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |