CN109764049A - A kind of bolt of screw thread gradual change - Google Patents
A kind of bolt of screw thread gradual change Download PDFInfo
- Publication number
- CN109764049A CN109764049A CN201711095859.5A CN201711095859A CN109764049A CN 109764049 A CN109764049 A CN 109764049A CN 201711095859 A CN201711095859 A CN 201711095859A CN 109764049 A CN109764049 A CN 109764049A
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- CN
- China
- Prior art keywords
- screw thread
- bolt
- screw rod
- gradual change
- section
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- 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.)
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Abstract
The present invention relates to a kind of bolt of screw thread gradual change, including head, screw rod and screw thread, the head is fixedly connected with screw rod, and the screw thread is extended downwardly from head, is formed in screw rod outer rim, and the flight pitch gradually becomes smaller from top to bottom.The present invention changes the consistent conventional method of conventional bolt flight pitch, gradual change shape is set by screw thread, bolt can be made to become more labor-saving screwing later period precession by increasingly thinner screw thread in the case where nor affecting on bolt fastening performance, to save exerting oneself for worker, mitigate hand fatigue.
Description
Technical field
The present invention relates to mechanical fitting casting field more particularly to a kind of bolts of screw thread gradual change.
Technical background
Bolt: machine components, the cylindrical threaded fastener of adapted nut.External screw thread (is had by head and screw rod
Cylindrical body) a kind of fastener dimerous, need to cooperate with nut, for being fastenedly connected two parts with through-hole.
This type of attachment claims to be bolted.As nut is screwed off from bolt, and the two parts can be made to separate, therefore be bolted
It is to belong to be detachably connected.
Bolt in the prior art is mostly that screw thread is equidistantly arranged, but actually in the bolt precession later period, and be not required to
Intensive screw thread is wanted to provide frictional force, the circle number that worker can be made to be rotated in the front and back phase with screwdriver instead is the same, time-consuming and laborious.
Summary of the invention
In order to solve the above-mentioned technical problem, a kind of more labor-saving, more time saving bolt is provided, the present invention provides following skill
Art scheme:
A kind of bolt of screw thread gradual change, including head, screw rod and screw thread, the head is fixedly connected with screw rod, described
Screw thread is extended downwardly from head, is formed in screw rod outer rim, and the flight pitch gradually becomes smaller from top to bottom.
Further, the screw rod is divided into three sections, respectively upper section, middle section and lower section, the upper section flight pitch >
Mid-section threads spacing > lower section flight pitch, each section of section internal screw thread spacing are consistent, it is easier to produce.
Further, the screw rod also can be divided into any number of segment in 4-10 sections, and bolt length according to demand determines section
Number, bolt is longer, and number of segment is more, is conducive to prepare bolt according to demand, can more be bonded actual use needs.
Further, the flight pitch minimum is not less than 1mm, and maximum is no more than 6mm.Flight pitch is too small to will lead to rotation
It is tight laborious, it is excessive and will lead to stability reduction.
The beneficial effects of the present invention are: the consistent conventional method of conventional bolt flight pitch is changed, screw thread is arranged
For gradual change shape, by increasingly thinner screw thread bolt can screwed in the case where nor affecting on bolt fastening performance
Later period precession becomes more labor-saving, to save exerting oneself for worker, mitigates hand fatigue.
Detailed description of the invention
Fig. 1, structural schematic diagram of the invention
In figure: 1, head, 2, screw rod, 3, screw thread
Specific embodiment
A kind of bolt of 3 gradual change of screw thread, including head 1, screw rod 2 and screw thread 3, the head 1 and the fixed company of screw rod 2
It connects, the screw thread 3 is extended downwardly from head 1, is formed in 2 outer rim of screw rod, and 3 spacing of screw thread gradually becomes smaller from top to bottom.
The screw rod 2 is divided into three sections, respectively upper section, middle section and lower section, the upper section flight pitch > mid-section threads
Spacing > lower section flight pitch, each section of 3 spacing of section internal screw thread are consistent, it is easier to produce.Upper section flight pitch is in the present embodiment
1.2mm, mid-section threads spacing are 2.5mm, and lower section flight pitch is 3.6mm.
Claims (4)
1. a kind of bolt of screw thread gradual change, it is characterised in that: including head, screw rod and screw thread, the head is fixed with screw rod
Connection, the screw thread are extended downwardly from head, are formed in screw rod outer rim, and the flight pitch gradually becomes smaller from top to bottom.
2. a kind of bolt of screw thread gradual change as described in claim 1, it is characterised in that: the screw rod is divided into three sections, respectively
For upper section, middle section and lower section, the upper section flight pitch > mid-section threads spacing > lower section flight pitch, between each section of section internal screw thread
Away from consistent.
3. a kind of bolt of screw thread gradual change as described in claim 1, it is characterised in that: the screw rod also can be divided into 4-10 sections
Any number of segment, bolt length according to demand determines number of segment, and bolt is longer, and number of segment is more.
4. a kind of bolt of screw thread gradual change as described in claim 1, it is characterised in that: the flight pitch minimum is not less than
1mm, maximum are no more than 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095859.5A CN109764049A (en) | 2017-11-09 | 2017-11-09 | A kind of bolt of screw thread gradual change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095859.5A CN109764049A (en) | 2017-11-09 | 2017-11-09 | A kind of bolt of screw thread gradual change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109764049A true CN109764049A (en) | 2019-05-17 |
Family
ID=66448924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711095859.5A Pending CN109764049A (en) | 2017-11-09 | 2017-11-09 | A kind of bolt of screw thread gradual change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109764049A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190426A (en) * | 1992-03-02 | 1993-03-02 | Illinois Tool Works Inc. | Concrete fastener |
| CN1447034A (en) * | 2002-03-22 | 2003-10-08 | 王增涛 | threaded fastener without equidistant pitch |
| CN103277386A (en) * | 2013-06-27 | 2013-09-04 | 余成鹏 | Convenient and stable thread structure |
| CN203822801U (en) * | 2014-05-07 | 2014-09-10 | 温州瑞强汽车部件有限公司 | Screw with spacer |
| CN105275954A (en) * | 2015-11-25 | 2016-01-27 | 杨挺 | Screw |
| CN205895830U (en) * | 2016-08-17 | 2017-01-18 | 上海美固澄梵紧固件有限公司 | Wood screw |
-
2017
- 2017-11-09 CN CN201711095859.5A patent/CN109764049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190426A (en) * | 1992-03-02 | 1993-03-02 | Illinois Tool Works Inc. | Concrete fastener |
| CN1447034A (en) * | 2002-03-22 | 2003-10-08 | 王增涛 | threaded fastener without equidistant pitch |
| CN103277386A (en) * | 2013-06-27 | 2013-09-04 | 余成鹏 | Convenient and stable thread structure |
| CN203822801U (en) * | 2014-05-07 | 2014-09-10 | 温州瑞强汽车部件有限公司 | Screw with spacer |
| CN105275954A (en) * | 2015-11-25 | 2016-01-27 | 杨挺 | Screw |
| CN205895830U (en) * | 2016-08-17 | 2017-01-18 | 上海美固澄梵紧固件有限公司 | Wood screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190517 |