CN201103666Y - Reversing anti-backlash nut - Google Patents
Reversing anti-backlash nut Download PDFInfo
- Publication number
- CN201103666Y CN201103666Y CNU2007201430144U CN200720143014U CN201103666Y CN 201103666 Y CN201103666 Y CN 201103666Y CN U2007201430144 U CNU2007201430144 U CN U2007201430144U CN 200720143014 U CN200720143014 U CN 200720143014U CN 201103666 Y CN201103666 Y CN 201103666Y
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- CN
- China
- Prior art keywords
- nut
- nuts
- clearance
- screw
- joining portion
- 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 provides a reverse anti-clearance nut, which is characterized in that: two nuts with the same structure are arranged oppositely; a spring is propped between opposite end surfaces of the two nuts. The nut structure is: the nut is provided with a threaded part and a joining part. Screw thread is arranged in a cavity of the threaded part; the joining part is an axial boss provided with a guide groove and is arranged on an end surface of the threaded part; and the joining parts of the two nuts are inserted into each other. The technical proposal has the advantages that the two nuts are propped outwardly under the action of spring force to eliminate the axial clearance between the nut and a screw bolt or a screw when the reverse anti-clearance nut is arranged on the screw bolt or the screw. After a period of work, a wear clearance between the screw bolt and the nut is generated again; the clearance is compensated automatically by applying the action of the spring force continuously. By mutually inserting the joining parts between the nuts, the mutual rotation and dropping between the two nuts can be prevented. The reverse anti-clearance nut only has three parts and the same structure of nuts, thereby having the advantages of simple structure and low cost.
Description
Technical field
The utility model belongs to the mechanical parts field, relates in particular to the mechanical structure of the no axial clearance motion that screw mandrel or screw rod cooperate with nut.
Background technique
Have this fit up gap and wearing clearance between the cooperating of existing screw mandrel or screw rod and nut, this makes and can not be suitable in demanding occasion of some transmission accuracies such as stepper motor.The structure in existing elimination nut gap is made up of the part of a cover more complicated, and cost is higher, and the assembling maintenance is complicated.
Summary of the invention
The utility model provides a kind of crack nut that oppositely disappears, and its purpose solves the shortcoming that prior art exists, and provides a kind of and can not only compensate automatically, eliminate fully the axial clearance between nut and screw mandrel or the screw rod, and have characteristics simple in structure, low cost of manufacture.
The technological scheme that its technical problem that solves the utility model adopts is:
The crack nut that oppositely disappears, it is characterized in that: the nut of two same structures is oppositely arranged, and contact has a spring between two corresponding end faces of nut.
The structure of above-mentioned nut is that nut has screw section and joining portion, and the inner chamber of screw section is provided with screw thread, and the joining portion is the axial projection with guiding groove of screw section end face setting, and the joining portion of two nuts plugs mutually.
The different arcuation projection of two relative radiuses that above-mentioned joining portion is provided with for the screw section end face, its sidewall respectively has a keyway, two keyways, after the joining portion of two nuts plugs mutually are placed in the keyway key gap to connect two nuts with respect to nut axle center symmetry.
The usefulness of technique scheme is: when it was contained on a screw rod or the screw mandrel, two nuts outwards strutted under the effect of spring force, and the axial clearance between nut and screw rod or the screw mandrel is eliminated.After work a period of time, wearing and tearing produce the gap between the bolt and nut, then continue the effect automatic compensation gap by spring force.Plugging mutually of joining portion can prevent to rotate mutually between two nuts and come off between the nut.The utility model has only three parts, and nut structure is identical, and therefore simple in structure, cost is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model nut stereogram
Fig. 2 is two nuts and spring three-dimensional exploded view
Fig. 3 is the utility model sectional view
Embodiment
As shown in Figure 1, nut of the present utility model has screw section 1 and joining portion 2.The inner chamber of screw section 1 is provided with screw thread 11, and this screw thread 11 is used for spiral shell and is located at screw rod, and the screw thread 12 of screw section 1 outer wall is used for spiral shell and is located at the required part that sets firmly thereon of nut.Joining portion 2 is the different arcuation projection 21,22 of two relative radiuses that screw section 1 end face is provided with, the external diameter of arcuation projection 21 is identical with the internal diameter of arcuation projection 22, the sidewall of arcuation projection 22 has a keyway 220, the sidewall of arcuation projection 21 has been provided with a key 210, and key 210, keyway 220 are for nut axle center symmetry.
As Fig. 2, shown in Figure 3, nut A, the B of two same structures plug relatively, because arcuation projection 21, external diameter identical with the internal diameter of arcuation projection 22, therefore the arcuation of nut A projection 22 engage sleeves are located at outside the arcuation projection 21 of nut B, arcuation projection 22 engage sleeves of nut B are located at outside the arcuation projection 21 of nut A, key 210 Spielpassung are inserted in the keyway 220 and make it be unlikely to rotate mutually or come off so that nut A, B are combined, because need the wearing and tearing of compensation very little, therefore usage requirement just can be satisfied in very little gap.Spring 4 is placed in the inner chamber that the relative arcuation projection 21 of nut A, B forms and is set on the screw rod that nut A, B institute spiral shell establishes, contact between the end face of nut A, B to compensate contingent wearing and tearing.
Claims (3)
1. the crack nut that oppositely disappears, it is characterized in that: the nut of two same structures is oppositely arranged, and contact has a spring between two corresponding end faces of nut.
2. the crack nut that oppositely disappears as claimed in claim 1, it is characterized in that: nut has screw section and joining portion, the inner chamber of screw section is provided with screw thread, and the joining portion is the axial projection with guiding groove of screw section end face setting, and the joining portion of two nuts plugs mutually.
3. the crack nut that oppositely disappears as claimed in claim 2, it is characterized in that: the different arcuation projection of two relative radiuses that the joining portion is provided with for the screw section end face, its sidewall respectively has a keyway, two keyways are with respect to nut axle center symmetry, after the joining portion of two nuts plugs mutually, the key gap is placed in the keyway to connect two nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201430144U CN201103666Y (en) | 2007-04-23 | 2007-04-23 | Reversing anti-backlash nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201430144U CN201103666Y (en) | 2007-04-23 | 2007-04-23 | Reversing anti-backlash nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103666Y true CN201103666Y (en) | 2008-08-20 |
Family
ID=39950692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201430144U Expired - Fee Related CN201103666Y (en) | 2007-04-23 | 2007-04-23 | Reversing anti-backlash nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103666Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506139A (en) * | 2011-11-21 | 2012-06-20 | 常熟市迅达粉末冶金有限公司 | Automatic gap-adjusting nut |
| CN106881861A (en) * | 2017-03-24 | 2017-06-23 | 杭州维彬科技有限公司 | A kind of photocuring 3D printer |
| CN110375003A (en) * | 2019-07-19 | 2019-10-25 | 北京科益虹源光电技术有限公司 | A kind of flexible coupling structure of automatically retractable |
| CN110730880A (en) * | 2017-06-08 | 2020-01-24 | Zf腓特烈斯哈芬股份公司 | Actuator with screw drive device and rear axle steering mechanism |
| CN113155457A (en) * | 2021-04-14 | 2021-07-23 | 人本股份有限公司 | Test device for testing bearing of electric compressor |
-
2007
- 2007-04-23 CN CNU2007201430144U patent/CN201103666Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506139A (en) * | 2011-11-21 | 2012-06-20 | 常熟市迅达粉末冶金有限公司 | Automatic gap-adjusting nut |
| CN106881861A (en) * | 2017-03-24 | 2017-06-23 | 杭州维彬科技有限公司 | A kind of photocuring 3D printer |
| CN110730880A (en) * | 2017-06-08 | 2020-01-24 | Zf腓特烈斯哈芬股份公司 | Actuator with screw drive device and rear axle steering mechanism |
| CN110375003A (en) * | 2019-07-19 | 2019-10-25 | 北京科益虹源光电技术有限公司 | A kind of flexible coupling structure of automatically retractable |
| CN113155457A (en) * | 2021-04-14 | 2021-07-23 | 人本股份有限公司 | Test device for testing bearing of electric compressor |
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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: 20080820 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |