CN201671934U - Self-locking threaded shaft - Google Patents
Self-locking threaded shaft Download PDFInfo
- Publication number
- CN201671934U CN201671934U CN2010201975788U CN201020197578U CN201671934U CN 201671934 U CN201671934 U CN 201671934U CN 2010201975788 U CN2010201975788 U CN 2010201975788U CN 201020197578 U CN201020197578 U CN 201020197578U CN 201671934 U CN201671934 U CN 201671934U
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- Prior art keywords
- self
- shrinkage pool
- utility
- model
- locking
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- Expired - Fee Related
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Abstract
The utility model discloses a self-locking threaded shaft, which comprises a shaft part, wherein the shaft part is provided with an external thread (1), a concave hole (2) is arranged at the end part of the shaft part one end of which is provided with the external thread (1), a sunk deformation pit (3) is arranged on the cylindrical internal wall of the concave hole (2), and the external thread (1) on the external surface of the concave hole (2) at the sunk deformation pit (3) is outwards and locally projected. The utility model not only has the advantage that a self-locking function can be achieved without a self-locking nut, but also has the advantages of compact structure and firm and reliable connection of a connecting pair. The utility model is particularly suitable for being used in occasions that the connection between parts not only requires compact structure, but also requires good anti-loosing performance at a connected position and does not permit the deformation of an internal thread or can not enable the internal thread to deform.
Description
Technical field
The utility model relates to a kind of method and self-locking threaded shaft that produces self-locking moment on outside thread, belongs to the self-locking technical field that is threaded.
Background technique
At present, usually the self-locking of used all kinds of parts is threaded, all be on nut part, to adopt self-locking structure to carry out locking processing after axle links to each other with the hole, when the structural requirement compactness, there is not redundant space, when requiring the joint that good anti-loosening property is arranged again, or because the part that links to each other with axle, though interior threaded hole is arranged, but not allowing internal thread to produce distortion, its structure maybe can't not make internal thread produce distortion, these situations all can not be selected the anti-loose structure of self-locking nut formula for use.Therefore the existing main employing self-locking nut mode of carrying out locking processing still can not satisfy the needs of use.
Summary of the invention
The purpose of this utility model is, a kind of auxiliary connection compact structure, firm and reliable connection is provided and does not need self-locking nut can reach the self-locking threaded shaft of auto-lock function, thereby overcome the deficiencies in the prior art.
The technical solution of the utility model: the utility model is to constitute like this, a kind of self-locking threaded shaft of the present utility model comprises and is provided with externally threaded axial workpiece, the end that is provided with outside thread one end at axial workpiece is provided with shrinkage pool, be provided with depressed deformation hole on the columnar inwall of shrinkage pool, the outside thread on the outer surface of the shrinkage pool at place, depressed deformation hole is outside local crowning.
Be evenly distributed with 2～8 depressed deformations hole at the columnar inwall of shrinkage pool upper edge circumference, and the outside thread on the outer surface of the shrinkage pool at each place, depressed deformation hole is outside local crowning.
On the columnar inwall of shrinkage pool, be provided with toroidal cavity, and the depressed deformation hole is located in the toroidal cavity.
Owing to adopted technique scheme, the utility model is taked circumferentially to produce the outside protruding structure in 2～8 places at outside thread on thread spindle, make the outside thread generation screw thread distortion among a small circle of thread spindle, when the distortion after outside thread by axle be screwed into the band interior threaded hole be connected part the time, the internal thread that is connected part is tightly embraced outside thread by the thread spindle of slight deformation, thereby in making, externally threaded joint produces locking torque, the part that is connected of band interior threaded hole firmly is connected with thread spindle, can play good locking effect like this, thereby realize auto-lock function.Therefore, the utility model compared with prior art, the utility model not only has the advantage that does not need self-locking nut can reach auto-lock function, but also has the advantage of auxiliary connection compact structure, firm and reliable connection.The utility model is particularly suitable for both having required compact structure when the connection between part, requires the joint that good anti-loosening property is arranged again and do not allow internal thread to produce distortion the occasion of internal thread generation distortion is used.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the local structure for amplifying schematic representation of the A portion of Fig. 1;
The structural representation that Fig. 3 is a self-locking threaded shaft of the present utility model when being connected part and being connected.
Description of reference numerals: the outside thread of 1-axial workpiece, the 2-shrinkage pool, 3-depressed deformation hole, the 4-toroidal cavity, 5-is connected part.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment of the present utility model: when making self-locking threaded shaft of the present utility model, can on the existing axial workpiece basis that is provided with outside thread 1, be made, during making, shrinkage pool 2 is produced in the end that is provided with outside thread 1 one ends at axial workpiece, the degree of depth of shrinkage pool 2 can need and definite to the distance of shaft end according to the central point that depressed deformation hole 3 is set by making or using, then on shrinkage pool 2 columnar inwalls, radially outwards adopt the mode of punching press or impact, and evenly distribute by circumference and to produce 2～8 depressed deformations holes 3, can make each depressed deformation cheat outside thread 1 outside local crowning (as shown in Figure 2) on the outer surface of shrinkage pool 2 at 3 places like this.
When the diameter of the thread spindle of the axial workpiece that is provided with outside thread 1 is bigger, for easy to make, can on shrinkage pool 2 columnar inwalls, produce 1～3 toroidal cavity 4, and then in toroidal cavity 4 by even distribution and adopt punching press or the mode of impact is produced depressed deformation hole 3, make each depressed deformation cheat outside thread 1 outside local crowning on the outer surface of shrinkage pool 2 at 3 places (as depicted in figs. 1 and 2).
The utility model produces self-locking moment on outside thread method is to produce shrinkage pool 2 earlier in the end that axial workpiece is provided with outside thread 1 one ends, on the circle tube inner wall of shrinkage pool 2, radially outwards carry out punching press then and produce depressed deformation hole 3, make outside thread 1 on the shrinkage pool 2 cylindrical shape place outer surfaces produce local deformation and to outer lug (as shown in Figure 2) by depressed deformation hole 3, can make the axial workpiece that is provided with outside thread 1 generation self-locking moment (as shown in Figure 3) with being connected part 5 and being connected of band interior threaded hole the time like this.
Claims (3)
1. self-locking threaded shaft, comprise the axial workpiece that is provided with outside thread (1), it is characterized in that: the end that is provided with outside thread (1) one end at axial workpiece is provided with shrinkage pool (2), be provided with depressed deformation hole (3) on the columnar inwall of shrinkage pool (2), the outside thread (1) on the outer surface of the shrinkage pool of locating in depressed deformation hole (3) (2) is outside local crowning.
2. self-locking threaded shaft according to claim 1, it is characterized in that: be evenly distributed with 2～8 depressed deformations holes (3) at the columnar inwall of shrinkage pool (2) upper edge circumference, and the outside thread (1) on the outer surface of the shrinkage pool of locating in each depressed deformation hole (3) (2) is outside local crowning.
3. self-locking threaded shaft according to claim 1 and 2 is characterized in that: be provided with toroidal cavity (4) on the columnar inwall of shrinkage pool (2), and depressed deformation hole (3) is located in the toroidal cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201975788U CN201671934U (en) | 2010-05-20 | 2010-05-20 | Self-locking threaded shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201975788U CN201671934U (en) | 2010-05-20 | 2010-05-20 | Self-locking threaded shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671934U true CN201671934U (en) | 2010-12-15 |
Family
ID=43329346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201975788U Expired - Fee Related CN201671934U (en) | 2010-05-20 | 2010-05-20 | Self-locking threaded shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893024A (en) * | 2010-05-20 | 2010-11-24 | 贵州航天精工制造有限公司 | Method for producing self-locking moment on external thread and self-locking threaded shaft |
-
2010
- 2010-05-20 CN CN2010201975788U patent/CN201671934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893024A (en) * | 2010-05-20 | 2010-11-24 | 贵州航天精工制造有限公司 | Method for producing self-locking moment on external thread and self-locking threaded shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20140520 |