CN203614545U - High-intensity screw - Google Patents
High-intensity screw Download PDFInfo
- Publication number
- CN203614545U CN203614545U CN201320690838.9U CN201320690838U CN203614545U CN 203614545 U CN203614545 U CN 203614545U CN 201320690838 U CN201320690838 U CN 201320690838U CN 203614545 U CN203614545 U CN 203614545U
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- CN
- China
- Prior art keywords
- screw
- screw head
- polished rod
- rod portion
- rod
- 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 high-intensity screw, which comprises a screw head and a screw rod, wherein the screw head and the screw rod are formed into a whole, the screw rod comprises an unthreaded rod part and a screw thread part, the unthreaded rod part is positioned between the screw head and the screw thread part, the end surfaces for connecting the bottom of the screw head and the unthreaded rod part are spherical surfaces, one end, connected with the screw head, of the unthreaded rod part is provided with an annular arc-shaped groove, the upper end of the circumferential wall of the arc-shaped groove is tangent with the spherical surfaces, the lower end of the circumferential wall of the arc-shaped groove is tangent with the circumferential wall of the unthreaded rod part. The high-intensity screw has the advantages that the stress generated at the connecting part of the screw head and the screw rod can be greatly weakened, so the fracture of the screw at the connecting part of the screw head and the screw rod can be effectively prevented.
Description
Technical field
The utility model relates to a kind of fastening piece, particularly a kind of high-strength screw.
Background technique
Screw is one of the most common fastening piece in machinery industry.Existing screw, it generally comprises as holistic screw head and screw rod, and the end face that screw head bottom is connected with screw rod is plane.The screw of said structure has the following disadvantages in actual application: the end face being connected with screw rod due to screw head bottom is plane, therefore between screw rod and screw head bottom surface, will form right angle, thereby in running, produce whens vibrations when being connected with the equipment of this screw, the connection part of screw head and screw rod will produce larger stress and concentrate, and then easily causes screw to rupture in the joint of screw head and screw rod.
Model utility content
The technical problems to be solved in the utility model is a kind of stress that can greatly weaken screw head and the generation of screw rod connection part to be provided, thereby can effectively to prevent that screw from the high-strength screw of fracture occurring in screw head and screw rod joint.
For solving the problems of the technologies described above, the utility model provides a kind of high-strength screw of following structure: it is included as holistic screw head and screw rod, screw rod comprises polished rod portion and screw section, polished rod portion is positioned between screw head and screw section, wherein, the end face that screw head bottom is connected with polished rod portion is sphere, and one end that polished rod portion is connected with screw head is provided with the arc groove of ring-type, upper end and the sphere of arc groove perisporium are tangent, and the lower end of arc groove perisporium and polished rod portion perisporium are tangent.
High-strength screw described in the utility model, wherein, one end that polished rod portion is connected with screw section is provided with the arc oil impregnate groove of ring-type.
Adopt after said structure, compared with prior art, the utlity model has following advantage: the end face being connected with polished rod portion due to the screw head bottom of the utility model high-strength screw is sphere, and upper end and the sphere of the arc groove perisporium of ring-type are tangent, the lower end of its perisporium and polished rod portion perisporium are tangent, therefore between screw head bottom surface and arc groove and between screw rod and arc groove, be all to adopt arc shaped surface transition, add that arc groove itself is also arc line shaped, that is to say, between screw head bottom surface and screw rod by arc shaped surface transition, and arc shaped surface is stressed comparatively even, can not produce stress concentrates, therefore the utility model high-strength screw can weaken the stress of screw head and the generation of screw rod connection part greatly, thereby can effectively prevent that the utility model high-strength screw from rupturing in the joint of screw head and screw rod.
The object that one end that the utility model high-strength screw is connected with screw section in polished rod portion arranges the arc oil impregnate groove of a ring-type is: we know, screw generally all can get rusty after long-time use, after screw gets rusty, frictional force between its screw section and equipment screw hole screw thread will increase greatly, cause screw to be difficult to be turned, for reducing the frictional force between screw section and equipment screw hole screw thread, people can add lubricant oil at screw head and equipment surface of contact place conventionally, make lubricant oil penetrate into this threaded connection place along screw rod, but because the threaded connection place of screw and equipment screw hole is conventionally all very tight, therefore lubricant oil cannot ooze completely whole threaded connection place at short notice, add gap between screwing and equipment screw hole very little, do not store the space of lubricant oil, therefore when people add lubricant oil in the threaded connection place to screw and equipment screw hole, needing to add just to make the threaded connection place of screw and equipment screw hole fill lubricant oil several times, and each interpolation all need to wait before once the overwhelming majority of the lubricant oil of interpolation all penetrate in the threaded connection place of screw and equipment screw hole, this very trouble that operates undoubtedly, and the one end being connected with screw section in polished rod portion due to the utility model high-strength screw is provided with the arc oil impregnate groove of a ring-type, therefore, when user adds lubricant oil at the sphere place of screw head, these lubricant oil can be successively along sphere, arc groove and polished rod penetrate in arc oil impregnate groove and store, then be stored in the threaded connection place that lubricant oil in arc oil impregnate groove will penetrate into screw and equipment screw hole gradually until ooze completely whole this threaded connection place, as can be seen here, the utility model high-strength screw only need add lubricant oil and just can reach the object of the threaded connection place of lubricated whole screw and equipment screw hole, operation is very easy.
Accompanying drawing explanation
Fig. 1 is the main TV structure profile schematic diagram of the utility model high-strength screw.
Tool mode of execution
Below in conjunction with accompanying drawing and tool mode of execution, the utility model high-strength screw is described in further detail.
As shown in Figure 1, in this tool mode of execution, the utility model high-strength screw is included as holistic screw head 1 and screw rod, screw rod comprises polished rod portion 2 and screw section 3, polished rod portion 2 is between screw head 1 and screw section 3, the end face that screw head 1 bottom is connected with polished rod portion 2 is sphere 4, one end that polished rod portion 2 is connected with screw head 1 is provided with the arc groove 5 of ring-type, upper end and the sphere 4 of arc groove 5 perisporiums are tangent, lower end and polished rod portion 2 perisporiums of arc groove 5 perisporiums are tangent, and one end that polished rod portion 2 is connected with screw section 3 is provided with the arc oil impregnate groove 6 of ring-type.
Above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (2)
1. a high-strength screw, be included as holistic screw head (1) and screw rod, described screw rod comprises polished rod portion (2) and screw section (3), described polished rod portion (2) is positioned between screw head (1) and screw section (3), it is characterized in that: the end face that described screw head (1) bottom is connected with polished rod portion (2) is sphere (4), one end that described polished rod portion (2) is connected with screw head (1) is provided with the arc groove (5) of ring-type, upper end and the sphere (4) of described arc groove (5) perisporium are tangent, lower end and polished rod portion (2) perisporium of described arc groove (5) perisporium are tangent.
2. high-strength screw according to claim 1, is characterized in that: one end that described polished rod portion (2) is connected with screw section (3) is provided with the arc oil impregnate groove (6) of ring-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690838.9U CN203614545U (en) | 2013-11-04 | 2013-11-04 | High-intensity screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690838.9U CN203614545U (en) | 2013-11-04 | 2013-11-04 | High-intensity screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614545U true CN203614545U (en) | 2014-05-28 |
Family
ID=50767194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690838.9U Expired - Fee Related CN203614545U (en) | 2013-11-04 | 2013-11-04 | High-intensity screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775326A (en) * | 2018-06-26 | 2018-11-09 | 浙江长瑞精密零部件制造有限公司 | A kind of flexible check bolt of nuclear power |
-
2013
- 2013-11-04 CN CN201320690838.9U patent/CN203614545U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775326A (en) * | 2018-06-26 | 2018-11-09 | 浙江长瑞精密零部件制造有限公司 | A kind of flexible check bolt of nuclear power |
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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: 20140528 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |