CN201517545U - Anti-theft locking nut - Google Patents
Anti-theft locking nut Download PDFInfo
- Publication number
- CN201517545U CN201517545U CN2009201902178U CN200920190217U CN201517545U CN 201517545 U CN201517545 U CN 201517545U CN 2009201902178 U CN2009201902178 U CN 2009201902178U CN 200920190217 U CN200920190217 U CN 200920190217U CN 201517545 U CN201517545 U CN 201517545U
- Authority
- CN
- China
- Prior art keywords
- nut
- holding cavity
- inloading part
- assembly piece
- screw
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an anti-theft locking nut which comprises a nut body and an anti-assembly piece arranged on the nut body, a straight groove which becomes deeper in the threaded direction and has an arc section is vertically formed on the inner wall of a screw hole, two vertical ends of the straight groove are not penetrated to form an anti-assembly piece accommodating chamber; the anti-assembly piece and an elastic block are arranged in the accommodating chamber, wherein the elastic block is arranged on the deeper side of the accommodating chamber, and the anti-assembly piece is propped against the elastic block; and a plug is arranged in the screw hole to prevent the anti-assembly piece and the elastic block from dropping. The utility model solves the defects that the anti-assembly piece rolling space exists in the straight groove in the prior art, so that the nut can be screwed out due to the repeated operation or looses due to the sympathetic vibration. Therefore, the anti-theft locking nut cannot be screwed in the reverse direction, thereby greatly improving the anti-theft locking performance of the nut.
Description
Technical field
The utility model relates to a kind of fastening nut of scyewed joint member that is used for, particularly a kind of antitheft lock nut.
Background technique
China utility model patent CN2802169Y discloses a kind of anti-assembling nut, comprise nut body and be arranged on anti-inloading part on the nut body, on the inwall of nut body screw, vertically offer two along hand of spiral from shallow to deep the cross section be the straight trough of arc, and vertical two ends of straight trough are not for running through, constitute anti-inloading part holding cavity, described anti-inloading part is arranged in the holding cavity, wherein anti-inloading part is a steel ball, steel ball rolls with holding cavity fornix position and cooperates, with holding cavity tip snap-fit, in order to prevent that steel ball from dropping out from holding cavity, be provided with the stopper of the cylinder lid shape of bottom circumferential surface band lug in the screw, the external diameter of stopper equates with the nut internal diameter.In the above-mentioned patent, after nut and bolt screwed, steel ball still had a scroll space at the fornix position of straight trough.External influence power is when the counterrotating nut, nut need be screwed a bit of distance, steel ball is subjected to screw thread frictional force just can roll into straight trough tip and chucking, no longer can screw out, also just because of the existence of scroll space is arranged, vibration nut or be rotated in the forward nut a little, steel ball can roll out from the straight trough tip, withdraw from gripping orientation, by repeatable operation, nut still can slowly screw out from bolt.In like manner, when nut produces resonance, the also situation that can occur slowly getting loose.
Summary of the invention
For solving the defective of background technique, the utility model provides a kind of anti-better nut of anti-loosening property that unloads.
For achieving the above object, the technological scheme that the utility model provides is, antitheft lock nut, comprise nut body and be arranged on anti-inloading part on the nut body, on the inwall of screw, vertically offer along hand of spiral from shallow to deep the cross section be the straight trough of arc, vertical two ends of straight trough are not for running through, constitute anti-inloading part holding cavity, described anti-inloading part is arranged in the holding cavity, also be provided with elastomer block in the described holding cavity, described elastomer block is arranged on the darker side of holding cavity, and described anti-inloading part is resisted against on the elastomer block.
It is blob of viscose that described elastomer block further is set.
It is steel ball or cylindrical peg that described anti-inloading part further is set again.
Further be arranged on again and be provided with a stopper in the screw.
It is cylinder lid shape that described stopper further is set again, and stopper bottom circumferential surface has lug.
The novel beneficial effect of this use is, anti-inloading part is blocked in elastomer block one side, nut is when screwing, anti-inloading part is moved to the straight trough depths by the screw rod frictional force action, extruding elastomer block, elastomer distortion, nut can continue to screw, when nut stopped to screw, elastomer recovered, and anti-inloading part is withstood on the holding cavity tip.That is to say that the scroll space that anti-inloading part is had in the background patents is replaced by elastomer, and the scroll space of anti-inloading part is provided by the limited deformation quantity of elastomer block when screwing, thereby anti-inloading part can not roll in holding cavity.Like this, in the counterrotating nut, because anti-inloading part tightens with the holding cavity tip, also just do not exist and do not screw the situation that a bit of distance could tighten, nut can not be reversed and screw, and the nut theftproof performance improves greatly.In like manner, even under the situation that produces resonance, nut can not get loose yet.Adopt the glue material as elastic material, produce easyly, cost is low, and can well reach antitheft locking requirement.In order to prevent that inloading part from dropping out from holding cavity, be provided with stopper in the screw, the external diameter of stopper equates with the nut internal diameter, stopper bottom circumferential surface is provided with lug, lug can be stuck in the screw thread, make stopper can from screw, not come off, and stopper can withdraw from screw gradually because of entering of bolt in use, does not influence the use of nut.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 is the utility model embodiment's a stereogram.
Fig. 2 is the utility model embodiment's STRUCTURE DECOMPOSITION figure.
Fig. 3 is the utility model embodiment's a structural representation.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, antitheft lock nut, comprise a nut body (1), screw at nut vertically offer on the screw inwall relative position of the other end of bolt two along hand of spiral from shallow to deep the cross section be the straight trough (2) of arc, vertical two ends of straight trough (2) are not for running through, and port is a protruding column (11), the edge of protruding column (11) is inside flange (111), constitute anti-inloading part holding cavity (21) with straight trough, be provided with steel ball (3) and blob of viscose (4) in the holding cavity (21) as anti-inloading part, blob of viscose (4) is arranged on a darker side of holding cavity (21), steel ball (3) is arranged between blob of viscose (4) and holding cavity (21) tip, be resisted against on the blob of viscose (4), with holding cavity (21) tip snap-fit.In order to prevent that steel ball (3) and blob of viscose (4) from dropping out from holding cavity (21), be provided with the stopper (5) of cylinder lid shape in the screw, the external diameter of stopper (5) equates with nut body (1) internal diameter, on the circumferential outer surface of stopper (5), be symmetrically arranged with two plate-like lug (51) near the lid bottom, lug (51) can be stuck in the screw thread, makes stopper (5) can not drop out from screw.During assembling, stopper (5) is from going into away from an end plug of protruding column (11), lug (51) outwardly, like this nut in use, stopper (5) can withdraw from from screw along with entering slowly of bolt, does not influence the use of nut.
Certainly, the utility model also can be provided with like this, what be provided with in the holding cavity is a blob of viscose and a cylindrical peg, pin is arranged between blob of viscose and the holding cavity tip, be resisted against on the blob of viscose, with holding cavity tip snap-fit, three of all can be arranged to be symmetrically distributed of straight trough or stopper lug in addition.
Claims (5)
1. antitheft lock nut, comprise nut body and be arranged on anti-inloading part on the nut body, on the inwall of screw, vertically offer along hand of spiral from shallow to deep the cross section be the straight trough of arc, vertical two ends of straight trough are not for running through, constitute anti-inloading part holding cavity, described anti-inloading part is arranged in the holding cavity, it is characterized in that: also be provided with elastomer block in the described holding cavity, described elastomer block is arranged on the darker side of holding cavity, and described anti-inloading part is resisted against on the elastomer block.
2. antitheft lock nut according to claim 1 is characterized in that: described elastomer block is a blob of viscose.
3. antitheft lock nut according to claim 1 and 2 is characterized in that: described anti-inloading part is steel ball or cylindrical peg.
4. antitheft lock nut according to claim 3 is characterized in that: be provided with a stopper in screw.
5. the antitheft nut that loosens according to claim 4 is characterized in that: described stopper is a cylinder lid shape, and the bottom circumferential surface has lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201902178U CN201517545U (en) | 2009-07-31 | 2009-07-31 | Anti-theft locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201902178U CN201517545U (en) | 2009-07-31 | 2009-07-31 | Anti-theft locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517545U true CN201517545U (en) | 2010-06-30 |
Family
ID=42498267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201902178U Expired - Fee Related CN201517545U (en) | 2009-07-31 | 2009-07-31 | Anti-theft locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963854A (en) * | 2014-04-17 | 2014-08-06 | 陕西汽车集团温州云顶汽车有限公司 | Truck cab rear support |
-
2009
- 2009-07-31 CN CN2009201902178U patent/CN201517545U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963854A (en) * | 2014-04-17 | 2014-08-06 | 陕西汽车集团温州云顶汽车有限公司 | Truck cab rear support |
| CN103963854B (en) * | 2014-04-17 | 2016-09-14 | 浙江云沃环卫设备有限公司 | Truck cab rear support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20180731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |