CN204239431U - A kind of double anti-theft nut - Google Patents
A kind of double anti-theft nut Download PDFInfo
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- CN204239431U CN204239431U CN201420585586.8U CN201420585586U CN204239431U CN 204239431 U CN204239431 U CN 204239431U CN 201420585586 U CN201420585586 U CN 201420585586U CN 204239431 U CN204239431 U CN 204239431U
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- fastener
- nut sleeve
- nut
- theft
- convex stupefied
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Abstract
The utility model discloses a kind of double anti-theft nut, comprising: the fastener in the nut sleeve manufactured by metallic material and nut sleeve.Double anti-theft nut of the present utility model has double anti-theft effect, the less position of nut sleeve inner sidewall diameter is passed through to the extruding of fastener diameter larger portion position during use, fastener outer side wall is made to there occurs local or partial deformation, especially the screw thread of fastener madial wall is made to there occurs larger deformation, the worm structure between anti-theft nut and the screw rod be attached thereto is caused to create destruction, fastener cannot unload by rotating, and nut sleeve produces the slip of circumferencial direction relative to fastener, thus reach the first heavy antitheft object, when the not obvious worm structure of the first heavy anti-theft effect destroy be not very serious time, fastener 2 still has may occur to loosen and is removed, add the second heavy steel ball or steel pin burglar-proof mechanism, constitute the double anti-theft nut of dual fail-safe, further increase anti-theft effect.
Description
Technical field
The utility model relates to fastener areas, is specifically related to a kind of double anti-theft nut.
Background technique
In some field, a large amount of needs antitheft, the lock nut of use, is such as arranged on the outdoor facility such as communication, electric power, railway, owing to using traditional plain nut, turn on easily via instrument, be therefore very easily stolen, so antitheft, lock nut must be used.The irregular profile of the employing that existing anti-theft nut has, just can be turned on, but thief is also easy to customize similar instrument according to the shape of nut is turned on nut by the instrument being equipped with custom-made; Also have the anti-theft nut adopting steel ball or steel pin structure, but when using, steel pin or steel ball do not touch screw rod, anti-theft nut still can oppositely screw off easily very much, and anti-theft effect is still undesirable.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of double anti-theft nut, worm structure can be destroyed during use, nut sleeve is rotated relative to fastening physical efficiency generation circumferencial direction, and in the through hole of fastener, be also provided with steel ball or steel pin burglar-proof mechanism, the effect of double anti-theft can be realized.
The utility model is achieved through the following technical solutions: a kind of double anti-theft nut, comprise: the nut sleeve manufactured by metallic material and the fastener be arranged in nut sleeve, the shape of cross section of described nut sleeve outer side wall is the regular polygon on more than four limits; The first groove is provided with in the middle part of described nut sleeve, the madial wall of this first groove is provided with that at least one is parallel or through the plane of nut sleeve axis, or be provided with at least one to raised first convex stupefied of nut sleeve axial direction, or be provided with that at least one is parallel or through the plane of nut sleeve axis with at least one is to raised first convex stupefied of nut sleeve axial direction simultaneously; The first described bottom portion of groove is provided with the first through hole.
Described fastener is the cylindrical shape of hollow, the second circular through hole is provided with in the middle part of fastener, described fastener outer side wall is provided with that at least one is parallel or through the plane of fastener axis, or it is convex stupefied away from second of fastener axial direction projection to be provided with at least one, or to be provided with at least one parallel or through fastener axis plane convex stupefied away from second of fastener axial direction projection with at least one simultaneously.
The most weakness of described nut sleeve madial wall radial distance is slightly smaller than the distance of described fastener outer side wall radial distance biggest place apart from fastener axis apart from the distance of nut sleeve axis.
The sidewall of the first described through hole is the collar flange that axial direction projection is yearned in footpath, described fastener bottom is fixedly installed on this collar flange, is provided with continuous print screw thread or arranges the size interval with screw thread phase uniform pitch inside the madial wall of described fastener second through hole and collar flange.
Described anti-theft nut is not when using, and described fastener is fixedly installed in the through hole of described nut sleeve; When described anti-theft nut is installed and used, described nut sleeve rotates around fastener, the position of described nut sleeve madial wall projection and the position of described fastener outer side wall projection abut against, and extruding produces certain moment of torsion, the described fastener described in nut sleeve extruding, make the screw thread extruding screw in described fastener second through hole and produce certain distortion, described nut sleeve produces the rotation of circumferencial direction relative to fastener.
Described fastener second through-hole wall is at least provided with an arc slot around circumferencial direction, the cross circular section arc shape of arc slot, the degree of depth of arc slot radial direction rotates contrary direction along anti-theft nut to be increased gradually, the radial depth biggest place of arc slot is provided with a plane radially and is blocked by arc slot, be provided with steel ball or cylindric steel pin in arc slot, be provided with neck bush in the through hole of described fastener and prevent steel ball or steel pin from coming off.
Further, the first described boss and the cross section of the second boss are semicircle.
Further, the top of described fastener is provided with at least two equally distributed wedge-shaped impressions.
Further, spaced 120 ° of described nut sleeve first groove madial wall is provided with 3 planes paralleled to the axis, and to be provided with 3 sliver transvers sections be semicircular convex stupefied to spaced 120 ° of described fastener outer side wall.
Further, described nut sleeve does not overlap with the axis of fastener but parallel, and described nut sleeve madial wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its larger arc surface be provided with one convex stupefied; Described fastener outer side wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its less arc surface be provided with one convex stupefied; The arc surface that described nut sleeve madial wall is less and the larger arc surface end of described fastener abut against, convex stupefied with the described fastener of described nut sleeve madial wall comparatively great circle cambered surface abuts against, and convex stupefied with the described nut sleeve madial wall of described fastener outer side wall abuts against.
Further, to be provided with 3 sliver transvers sections be that to be provided with 3 sliver transvers sections be semicircular convex stupefied to spaced 120 ° of semicircular convex stupefied, described fastener outer side wall to spaced 120 ° of described nut sleeve first groove madial wall.
Beneficial effect: double anti-theft nut of the present utility model has double anti-theft effect, the less position of nut sleeve inner sidewall diameter is passed through to the extruding of fastener diameter larger portion position during use, fastener is made to there occurs the deformation of local or part, especially the screw thread of fastener madial wall is made to there occurs larger deformation, the worm structure between anti-theft nut and the screw rod be attached thereto is caused to create destruction, fastener cannot unload by rotating, and nut sleeve produces the slip of circumferencial direction relative to fastener, thus reach the first heavy antitheft object, when the not obvious worm structure of the first heavy anti-theft effect destroy be not very serious time, fastener 2 still has may occur to loosen and is removed, add the second heavy steel ball or steel pin burglar-proof mechanism, constitute the double anti-theft nut of dual fail-safe, further increase anti-theft effect.
Accompanying drawing explanation
For ease of illustrating, the utility model is described in detail by following specific embodiment and accompanying drawing.
Fig. 1 is the schematic perspective view of the utility model double anti-theft nut embodiment 2;
Fig. 2 is the plan view of the utility model double anti-theft nut embodiment 2;
Fig. 3 is the plan view of the utility model double anti-theft nut embodiment 3;
Fig. 4 is the plan view of the utility model double anti-theft nut embodiment 4;
Fig. 5 is the plan view of the utility model double anti-theft nut embodiment 5.
Wherein: 1 nut sleeve; 2 fasteners.
Embodiment
Further specific descriptions will be done by specific embodiment to the utility model below below in conjunction with accompanying drawing, but can not be interpreted as it is restriction to the utility model protection domain.
In description of the present utility model, needs are understood, and " the first through hole ", " the second through hole ", " the first groove ", " first is convex stupefied " and " second is convex stupefied " are for ease of describing the utility model and simplified characterization, instead of refer to specific title.In addition, common saying " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Embodiment's schematic diagram that accompanying drawing provides is only the several of the utility model anti-theft nut, can not think that the utility model is only limitted to this several structure, when the ABC that those skilled in the art grasp and operative skill, the anti-theft nut of a series of similar structure can also be expanded.
Embodiment 1
A kind of double anti-theft nut, comprising: the nut sleeve 1 manufactured by metallic material and the fastener 2 be arranged in nut sleeve 1, and the shape of cross section of described nut sleeve 1 outer side wall is the regular polygon on more than four limits; The first groove is provided with in the middle part of described nut sleeve 1, the madial wall of this first groove is provided with that at least one is parallel or through the plane of nut sleeve 1 axis, or be provided with at least one to raised first convex stupefied of nut sleeve 1 axial direction, or be provided with that at least one is parallel or through the plane of nut sleeve 1 axis with at least one is to raised first convex stupefied of nut sleeve 1 axial direction simultaneously; The first described bottom portion of groove is provided with the first through hole.
Described fastener 2 is the cylindrical shape of hollow, the second circular through hole is provided with in the middle part of fastener 2, described fastener 2 outer side wall is provided with that at least one is parallel or through the plane of fastener 2 axis, or it is convex stupefied away from second of fastener 2 axial direction projection to be provided with at least one, or to be provided with at least one parallel or through fastener 2 axis plane convex stupefied away from second of fastener 2 axial direction projection with at least one simultaneously.
The most weakness of described nut sleeve 1 madial wall radial distance is slightly smaller than the distance of described fastener 2 outer side wall radial distance biggest place apart from fastener 2 axis apart from the distance of nut sleeve 1 axis, by regulate the difference of this distance can adjusting nut cover 1 to skid relative to fastener 2 and produce circumferencial direction rotate needed for moment values, difference is less, required moment is less, difference is larger, and required moment is also larger.
The sidewall of the first described through hole is the collar flange that axial direction projection is yearned in footpath, described fastener 2 bottom is fixedly installed on this collar flange, is provided with continuous print screw thread or arranges the size interval with screw thread phase uniform pitch inside the madial wall of described fastener 2 second through hole and collar flange.
Described anti-theft nut is not when using, and described fastener 2 is fixedly installed in the through hole of described nut sleeve 1; When described anti-theft nut is installed and used, described nut sleeve 1 rotates around fastener 2, the position of described nut sleeve 1 madial wall projection and the position of described fastener 2 outer side wall projection abut against, and extruding produces certain moment of torsion, described nut sleeve 1 extrudes described fastener 2, make the screw thread extruding screw in described fastener 2 second through hole and produce certain distortion, described nut sleeve 1 produces the rotation of circumferencial direction relative to fastener 2, this is the effect of the first heavy burglar-proof mechanism.
Described fastener 2 second through-hole wall is at least provided with an arc slot around circumferencial direction, the cross circular section arc shape of arc slot, the degree of depth of arc slot radial direction rotates contrary direction along anti-theft nut to be increased gradually, the radial depth biggest place of arc slot is provided with a plane radially and is blocked by arc slot, be provided with steel ball or cylindric steel pin in arc slot, be provided with neck bush in the through hole of described fastener 2 and prevent steel ball or steel pin from coming off.When screwing anti-theft nut, steel ball or steel pin are positioned at the bosom of arc slot, screw rod can not be touched, when counterrotating or when unloading anti-theft nut, steel ball or steel pin can move toward the place that arc slot is more shallow gradually, move to a certain degree, and steel ball or steel pin can be blocked by screw rod, fastener 2 cannot be rotated, play the second heavy anti-theft effect.When the not obvious worm structure of the first heavy anti-theft effect destroy be not very serious time, fastener 2 still has may occur to loosen and is removed, and adds the second heavy burglar-proof mechanism, constitutes the anti-theft nut of dual fail-safe, further increase anti-theft effect.
Preferred, the first described boss and the cross section of the second boss are semicircle, and such arranging can be that nut sleeve 1 is more smooth and easy relative to the rotation of fastener 2.
Embodiment 2
As depicted in figs. 1 and 2, relative to embodiment 1, difference is only: spaced 120 ° of described nut sleeve 1 first groove madial wall is provided with 3 planes paralleled to the axis, and to be provided with 3 sliver transvers sections be semicircular second convex stupefied to spaced 120 ° of described fastener 2 outer side wall.When anti-theft nut 1 carries out rotational fastener, the plane of nut sleeve 1 madial wall abuts and extrudes the second convex stupefied of fastener 2 outer side wall, the screw thread of fastener 2 is caused to produce certain destruction, when exceeding default moment, nut sleeve 1 is skidded relative to fastener 2 and is produced the rotation of circumferencial direction, thus fastener 2 cannot be unloaded, coordinate the second heavy burglar-proof mechanism of steel ball or steel pin, make anti-theft effect better outstanding and reliable.
Embodiment 3
As shown in Figure 3, relative to embodiment 1, difference is only: described nut sleeve 1 does not overlap with the axis of fastener 2 but parallel, described nut sleeve 1 madial wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its larger arc surface be provided with one convex stupefied; Described fastener 2 outer side wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its less arc surface be provided with one convex stupefied; The arc surface that described nut sleeve 1 madial wall is less and the larger arc surface end of described fastener 2 abut against, convex stupefied with the described fastener 2 of described nut sleeve 1 madial wall comparatively great circle cambered surface abuts against, and convex stupefied with described nut sleeve 1 madial wall of described fastener 2 outer side wall abuts against.Because the axis of nut sleeve 1 with fastener 2 does not overlap, after nut sleeve 1 to be skidded relative to fastener 2 and is produced the rotation of circumferencial direction, the screw thread of the first through hole madial wall of nut sleeve 1 and the screw thread of fastener second through hole madial wall are broken into discontinuous screw thread, cause nut sleeve 1 more difficult relative to the rotation of fastener 2 circumferencial direction, the arc surface end that fastener 2 is larger when rotation 45 ° and the convex stupefied of nut sleeve 1 madial wall abut against, need very large moment that nut sleeve 1 just can be made to skid relative to fastener 2 and produce the rotation of circumferencial direction, when half-twist, due to threading dislocations, nut sleeve 1 is relative to the rotation difficulty of fastener 2 circumferencial direction, substantially can not make the convex stupefied extruding of the convex stupefied of nut sleeve 1 and fastener and skid.Due to the first through hole madial wall of described nut sleeve 1 also having screw thread, when described nut sleeve 1 and fastener 2 use conversely, nut sleeve 1 uses as fastener, after fastener 2 is tightened with the special spanner supporting with its outer side wall, nut sleeve 1 and fastener 2 joint disconnect, because described nut sleeve 1 not to overlap with the axis of fastener 2 but parallel, thus make the internal thread threading dislocations of the first through hole and the second through hole, nut sleeve 1 is more difficult relative to the rotation of fastener 2 circumferencial direction, thus reach good anti-loose anti-theft effect, coordinate the second heavy burglar-proof mechanism of steel ball or steel pin, make anti-theft effect better outstanding and reliable.
Embodiment 4
As shown in Figure 4, relative to embodiment 1, difference is only: to be provided with 3 sliver transvers sections be semicircular convex stupefied 3 planes paralleled to the axis to spaced 120 ° of described nut sleeve 1 first groove madial wall, spaced 120 ° of described fastener 2 outer side wall is provided with 3 planes paralleled to the axis, the top of described fastener 2 is provided with at least two equally distributed wedge-shaped impressions, the use of anti-theft nut through the long period can loosen unavoidably, now nut sleeve 1 can not play the effect that clamping fastener body 2 screws, by being provided with wedge-shaped impression, can by special sleeve barrel tool and wedge slot adaptation, further reinforcing is screwed to anti-theft nut, and the setting of wedge slot ensure that anti-theft nut can only rotate along the direction of tightening nut, in the other direction then cannot be stressed, still anti-theft nut cannot be outwarded winding, coordinate the second heavy burglar-proof mechanism of steel ball or steel pin, make anti-theft effect better outstanding and reliable.
Embodiment 5
As shown in Figure 5, relative to embodiment 1, difference is only: to be provided with 3 sliver transvers sections be that to be provided with 3 sliver transvers sections be semicircular convex stupefied to spaced 120 ° of semicircular convex stupefied, described fastener 2 outer side wall to spaced 120 ° of described nut sleeve 1 first groove madial wall.When anti-theft nut 1 carries out rotational fastener, first convex stupefied abutting of nut sleeve 1 madial wall also extrudes the second convex stupefied of fastener 2 outer side wall, the screw thread of fastener 2 is caused to produce certain destruction, when exceeding default moment, nut sleeve 1 is skidded relative to fastener 2 and is produced the rotation of circumferencial direction, thus fastener 2 cannot be unloaded, coordinate the second heavy burglar-proof mechanism of steel ball or steel pin, make anti-theft effect better outstanding and reliable.
Double anti-theft nut of the present utility model has double anti-theft effect, the less position of nut sleeve inner sidewall diameter is passed through to the extruding of fastener diameter larger portion position during use, fastener outer side wall is made to there occurs local or partial deformation, especially the screw thread of fastener madial wall is made to there occurs larger deformation, the worm structure between anti-theft nut and the screw rod be attached thereto is caused to create destruction, fastener cannot unload by rotating, and nut sleeve produces the slip of circumferencial direction relative to fastener, thus reach the first heavy antitheft object, when the not obvious worm structure of the first heavy anti-theft effect destroy be not very serious time, fastener 2 still has may occur to loosen and is removed, add the second heavy steel ball or steel pin burglar-proof mechanism, constitute the double anti-theft nut of dual fail-safe, further increase anti-theft effect.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and the claimed scope of the utility model is defined by appending claims, specification and equivalent thereof.
Claims (6)
1. a double anti-theft nut, comprise: the nut sleeve (1) manufactured by metallic material and the fastener (2) be arranged in nut sleeve (1), is characterized in that: the shape of cross section of described nut sleeve (1) outer side wall is the regular polygon on more than four limits; Described nut sleeve (1) middle part is provided with the first groove, the madial wall of this first groove is provided with that at least one is parallel or through the plane of nut sleeve (1) axis, or be provided with at least one to raised first convex stupefied of nut sleeve (1) axial direction, or be provided with that at least one is parallel or through the plane of nut sleeve (1) axis with at least one is to raised first convex stupefied of nut sleeve (1) axial direction simultaneously; The first described bottom portion of groove is provided with the first through hole;
The cylindrical shape that described fastener (2) is hollow, fastener (2) middle part is provided with the second circular through hole, described fastener (2) outer side wall is provided with that at least one is parallel or through the plane of fastener (2) axis, or it is convex stupefied away from second of fastener (2) axial direction projection to be provided with at least one, or to be provided with at least one parallel or through fastener (2) axis plane convex stupefied away from second of fastener (2) axial direction projection with at least one simultaneously;
The most weakness of described nut sleeve (1) madial wall radial distance, apart from the distance of nut sleeve (1) axis, is slightly smaller than the distance of described fastener (2) outer side wall radial distance biggest place apart from fastener (2) axis;
The sidewall of the first described through hole is the collar flange that axial direction projection is yearned in footpath, described fastener (2) bottom is fixedly installed on this collar flange, is provided with continuous print screw thread or arranges the size interval with screw thread phase uniform pitch inside the madial wall of described fastener (2) second through hole and collar flange;
Described anti-theft nut is not when using, and described fastener (2) is fixedly installed in the through hole of described nut sleeve (1); When described anti-theft nut is installed and used, described nut sleeve (1) rotates around fastener (2), the position of described nut sleeve (1) madial wall projection and the position of described fastener (2) outer side wall projection abut against, and extruding produces certain moment of torsion, the described fastener (2) described in nut sleeve (1) extruding, make the screw thread extruding screw in described fastener (2) second through hole and produce certain distortion, described nut sleeve (1) produces the rotation of circumferencial direction relative to fastener (2);
Described fastener (2) second through-hole wall is at least provided with an arc slot around circumferencial direction, the cross circular section arc shape of arc slot, the degree of depth of arc slot radial direction rotates contrary direction along anti-theft nut to be increased gradually, the radial depth biggest place of arc slot is provided with a plane radially and is blocked by arc slot, be provided with steel ball or cylindric steel pin in arc slot, be provided with neck bush in the through hole of described fastener (2) and prevent steel ball or steel pin from coming off.
2. anti-theft nut according to claim 1, is characterized in that: described first convex stupefied and the second convex stupefied cross section is for semicircle.
3. anti-theft nut according to claim 1, is characterized in that: the top of described fastener (2) is provided with at least two equally distributed wedge-shaped impressions.
4. the anti-theft nut according to claim 1,2 or 3, it is characterized in that: spaced 120 ° of described nut sleeve (1) first groove madial wall is provided with 3 planes paralleled to the axis, to be provided with 3 sliver transvers sections be semicircular convex stupefied to spaced 120 ° of described fastener (2) outer side wall.
5. the anti-theft nut according to claim 1,2 or 3, it is characterized in that: described nut sleeve (1) does not overlap with the axis of fastener (2) but parallel, described nut sleeve (1) madial wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its larger arc surface be provided with one convex stupefied; Described fastener (2) outer side wall is connected by 2 facets by the arc surface that the arc surface that diameter is larger is less with diameter and forms, its less arc surface be provided with one convex stupefied; The arc surface that described nut sleeve (1) madial wall is less and the larger arc surface end of described fastener (2) abut against, convex stupefied with the described fastener (2) of described nut sleeve (1) madial wall comparatively great circle cambered surface abuts against, and convex stupefied with described nut sleeve (1) madial wall of described fastener (2) outer side wall abuts against.
6. the anti-theft nut according to claim 1,2 or 3, it is characterized in that: to be provided with 3 sliver transvers sections be that to be provided with 3 sliver transvers sections be semicircular convex stupefied to spaced 120 ° of semicircular convex stupefied, described fastener (2) outer side wall to spaced 120 ° of described nut sleeve (1) first groove madial wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585586.8U CN204239431U (en) | 2014-10-11 | 2014-10-11 | A kind of double anti-theft nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585586.8U CN204239431U (en) | 2014-10-11 | 2014-10-11 | A kind of double anti-theft nut |
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| Publication Number | Publication Date |
|---|---|
| CN204239431U true CN204239431U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585586.8U Active CN204239431U (en) | 2014-10-11 | 2014-10-11 | A kind of double anti-theft nut |
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| CN (1) | CN204239431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356712A (en) * | 2018-12-12 | 2019-02-19 | 中国北方发动机研究所(天津) | A kind of turbine rotor locking nut structure |
-
2014
- 2014-10-11 CN CN201420585586.8U patent/CN204239431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356712A (en) * | 2018-12-12 | 2019-02-19 | 中国北方发动机研究所(天津) | A kind of turbine rotor locking nut structure |
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