CN203835926U - Round anti-theft nut - Google Patents

Round anti-theft nut Download PDF

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Publication number
CN203835926U
CN203835926U CN201420245203.2U CN201420245203U CN203835926U CN 203835926 U CN203835926 U CN 203835926U CN 201420245203 U CN201420245203 U CN 201420245203U CN 203835926 U CN203835926 U CN 203835926U
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CN
China
Prior art keywords
theft nut
nut body
theft
arc groove
steel ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201420245203.2U
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Chinese (zh)
Inventor
张庆武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING KAICHI STANDARD PARTS CO Ltd
Original Assignee
NANJING KAICHI STANDARD PARTS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANJING KAICHI STANDARD PARTS CO Ltd filed Critical NANJING KAICHI STANDARD PARTS CO Ltd
Priority to CN201420245203.2U priority Critical patent/CN203835926U/en
Application granted granted Critical
Publication of CN203835926U publication Critical patent/CN203835926U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a round anti-theft nut. The round anti-theft nut comprises an anti-theft nut body (1), wherein the outer surface of the anti-theft nut body (1) is cylindrical, the end of the anti-theft nut body (1) is evenly provided with three chutes (2), one end of each chute (2) is concave inwards and perpendicular to the anti-theft nut body (1), the other end of each chute (2) is in circular transition with the end face of the anti-theft nut body (1), the inner side of a threaded hole of the anti-theft nut body (1) is provided with one or more arc grooves (3) having the same direction with threads, one end of each arc groove (3) is a deep vertical groove, the other end of each arc groove (3) is in circular transition with the threads, a steel ball (4) is arranged in each arc groove (3), and the diameter of each steel ball (4) is the same as the depth of the deep vertical groove of the corresponding arc groove (3). The round anti-theft nut has the advantages of solving the problem that a nut in the prior art looses easily, overcoming the technical defect that the anti-theft performance is poor and being simple in structure, easy and convenient to install and reliable in performance.

Description

A kind of circular theft-proof nut
Technical field
The utility model relates to a kind of circular theft-proof nut.
Background technique
Current fastening piece is widely used on various structural members, common fastening piece is bolt and hexagon nut (hexagonal socket nut or outer-hexagonal nut), common nut mostly and spring pad, cotter pin etc. be used in conjunction with, easily loosening, relaxation effect is not good, and easily artificial being disassembled of existing nut, anti-theft effect is bad.
Summary of the invention
The purpose of this utility model is to provide a kind of circular theft-proof nut, solves easily loosening, the poor technological deficiency of anti-theft of existing nut.
For addressing the above problem, technical solution adopted in the utility model is:
A kind of circular theft-proof nut, comprise anti-theft nut body, described this external surface of anti-theft nut is cylindric and its end and is provided with uniformly three skewed slots, described skewed slot one end indent and vertical with anti-theft nut body, the other end and anti-theft nut body end face arc transition, anti-theft nut body tapped hole inner side has an above arc groove identical with hand of spiral, arc groove one end is vertical deep trouth, the other end and screw thread arc transition, a steel ball is respectively set in each arc groove, and steel ball size is identical with the degree of depth of the vertical deep trouth of arc groove.
In the utility model, the outer surface of anti-theft nut body is cylindric, common wrench opening can skid while being mated rotation, can not turn, and the end of anti-theft nut body arranges three skewed slots, by special spanner, just can operate on it, and skewed slot one end indent and vertical with anti-theft nut body, the other end and anti-theft nut body end face arc transition, make the spanner that uses can only be by this gymnastics of anti-theft nut a direction rotation, can not be to its application of force toward another direction; On the other hand, nut is screwed on bolt, bolt promotes steel ball and rolls to the vertical deep trouth place of arc groove, now do not affect the rotation of nut and bolt, after but screw bolt and nut fixes, as rotation in the opposite direction, steel ball is rolled by bolt outside thread band trend arc groove shallow end, steel ball plays the effect of extruding between nut and bolt, stop relatively rotating of nut and bolt, and nut can not be removed from bolt, be also not easy to produce loosening, have because can not dismantle, so also reached antitheft object.
As further improvement of the utility model, also comprise the smooth inner sleeve in outside, be set in tapped hole in described and its external diameter equates with the path of screw thread, steel ball is defined in arc groove.
Arrange inner sleeve can prevent nut be fixed on bolt before steel ball come off, inner sleeve packs into from anti-theft nut body one end, that steel ball is defined in arc groove, steel ball can not be dropped in arc groove, and while using, along with the screw-in of bolt, inner sleeve is pushed away by bolt, has bolt that steel ball is limited in arc groove.
As further improvement of the utility model, also comprise overcoat, it is larger than the external diameter of the other end that described anti-theft nut body arranges one end of skewed slot, described coat suit is in the less one end of anti-theft nut body top external diameter, and the length of overcoat is less than or equal to the length of one end that this body diameter of anti-theft nut is less.
Overcoat is set, and when clamping bolt rotation with spanner by force, what spanner was clamped is overcoat, and during moving wrench, overcoat can rotate on nut, and anti-theft nut body is motionless, so apply large power, can not cause damage to nut again.
As further improvement of the utility model, described arc groove has three, is arranged on uniformly anti-theft nut body tapped hole inner side.
Three arc grooves are set, and quantity is best, i.e. fine realization stops nut to be laid down, and is unlikely to again because arc groove too much makes the effective screw thread for fixing very few, and the rigidity of nut also can be guaranteed.
As further improvement of the utility model, described less one end of this body diameter of anti-theft nut is provided with more than one tangent plane.
Tangent plane is set, while being convenient to manufacture screw thread, it is fixed, prevent from making I.S.S nut rotation.
As of the present utility model, further improve, the quantity of described tangent plane is three.
In sum, the beneficial effects of the utility model are: solved nut in prior art and easily become flexible, and the technological deficiency that theftproof performance is poor, and also simple in structure, simple installation, reliable performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of anti-theft nut body in reaction the utility model.
Fig. 3 is the structural representation that in reflection the utility model, anti-theft nut body and steel ball assemble.
Wherein: 1, anti-theft nut body; 2, skewed slot; 3, arc groove; 4, steel ball; 5, inner sleeve; 6, overcoat; 7, tangent plane.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Anti-theft nut as shown in Figure 1 to Figure 3, comprise anti-theft nut body 1, inner sleeve 5 and overcoat 6, described anti-theft nut body 1 outer surface is cylindric, described anti-theft nut body 1 one end is larger than the external diameter of the other end, the end, one end that anti-theft nut body 1 external diameter is larger is provided with three skewed slots 2 uniformly, one end outer surface that anti-theft nut body 1 external diameter is less arranges three tangent planes 7 uniformly, described skewed slot 2 one end indents and vertical with anti-theft nut body 1, the other end and anti-theft nut body 1 end face arc transition, anti-theft nut body 1 tapped hole inner side has three arc grooves identical with hand of spiral 3 uniformly, arc groove 3 one end are vertical deep trouth, the other end and screw thread arc transition, a steel ball 4 is respectively set in each arc groove 3, steel ball 4 diameters are identical with the degree of depth of arc groove 3 vertical deep trouths, described inner sleeve 5 is arranged in tapped hole and its external diameter equates with the path of screw thread, and steel ball 4 is defined in arc groove 3, described overcoat 6 is sleeved on the less one end of anti-theft nut body 1 top external diameter, and the length of overcoat 6 is less than or equal to the length of one end that anti-theft nut body 1 external diameter is less.
The working procedure of the utility model anti-theft nut is as follows: overcoat 6 is enclosed within on one end that anti-theft nut body 1 external diameter is less, with special spanner, (there are three projections, for existing product) coordinate with the skewed slot 2 of anti-theft nut body 1 end, turn nut, push away inner sleeve 5, during 1 rotation of anti-theft nut body, bolt promotes steel ball 4 and rolls to the vertical deep trouth place of arc groove 3, now do not affect relatively rotating of anti-theft nut body 1 and bolt, after bolt fixes, as rotation in the opposite direction, steel ball 4 is driven and rolls towards the shallow end of arc groove 3 by bolt outside thread, now steel ball 4 stops relatively rotating of anti-theft nut body 1 and bolt, reach and loosen and antitheft object.If clamp overcoat 6 application of forces with common spanner, overcoat 6 rotates on anti-theft nut body 1,1 of anti-theft nut body is motionless, nut can not be pulled down, as use aforementioned specific spanner, and due to skewed slot 2 one end indents and vertical with anti-theft nut body 1, the other end and anti-theft nut body 1 end face arc transition, spanner does not have the Point of Strength of turn anti-theft nut body 1, therefore nut can not be removed.
What in the utility model, be not specifically noted is prior art, or just can realize by prior art, and should be understood that described in the utility model, concrete case study on implementation, only for better case study on implementation of the present utility model, is not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be as technology category of the present utility model.

Claims (6)

1. a circular theft-proof nut, comprise anti-theft nut body (1), it is characterized in that: described anti-theft nut body (1) outer surface is cylindric and its end and is provided with uniformly three skewed slots (2), described skewed slot (2) one end indent and vertical with anti-theft nut body (1), the other end and anti-theft nut body (1) end face arc transition, anti-theft nut body (1) tapped hole inner side has an above arc groove (3) identical with hand of spiral, arc groove (3) one end is vertical deep trouth, the other end and screw thread arc transition, a steel ball (4) is respectively set in each arc groove (3), steel ball (4) diameter is identical with the degree of depth of the vertical deep trouth of arc groove (3).
2. anti-theft nut according to claim 1, is characterized in that: also comprise the inner sleeve (5) that outside is smooth, described inner sleeve (5) is arranged in tapped hole and its external diameter equates with the path of screw thread, and steel ball (4) is defined in arc groove (3).
3. anti-theft nut according to claim 1 and 2, it is characterized in that: also comprise overcoat (6), it is larger than the external diameter of the other end that described anti-theft nut body (1) arranges one end of skewed slot (2), described overcoat (6) is sleeved on the less one end of anti-theft nut body (1) top external diameter, and the length of overcoat (6) is less than or equal to the length of one end that anti-theft nut body (1) external diameter is less.
4. anti-theft nut according to claim 3, is characterized in that: described arc groove (3) has three, is arranged on uniformly anti-theft nut body (1) tapped hole inner side.
5. anti-theft nut according to claim 4, is characterized in that: described less one end of anti-theft nut body (1) external diameter is provided with more than one tangent plane (7).
6. anti-theft nut according to claim 5, is characterized in that: the quantity of described tangent plane (7) is three.
CN201420245203.2U 2014-05-14 2014-05-14 Round anti-theft nut Active CN203835926U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420245203.2U CN203835926U (en) 2014-05-14 2014-05-14 Round anti-theft nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420245203.2U CN203835926U (en) 2014-05-14 2014-05-14 Round anti-theft nut

Publications (1)

Publication Number Publication Date
CN203835926U true CN203835926U (en) 2014-09-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420245203.2U Active CN203835926U (en) 2014-05-14 2014-05-14 Round anti-theft nut

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CN (1) CN203835926U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763099A (en) * 2017-03-21 2017-05-31 河南丰佳电力设备有限公司 A kind of anti-theft nut component and anti-theft nut
CN110725851A (en) * 2019-09-19 2020-01-24 国网河北省电力有限公司邯郸供电分公司 Speed-sliding self-locking type double-nut anti-theft screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763099A (en) * 2017-03-21 2017-05-31 河南丰佳电力设备有限公司 A kind of anti-theft nut component and anti-theft nut
CN110725851A (en) * 2019-09-19 2020-01-24 国网河北省电力有限公司邯郸供电分公司 Speed-sliding self-locking type double-nut anti-theft screw

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Addressee: Wang Xiaopeng

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