CN105443541A - Bi-directional screw - Google Patents
Bi-directional screw Download PDFInfo
- Publication number
- CN105443541A CN105443541A CN201610005241.4A CN201610005241A CN105443541A CN 105443541 A CN105443541 A CN 105443541A CN 201610005241 A CN201610005241 A CN 201610005241A CN 105443541 A CN105443541 A CN 105443541A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- threaded rod
- screw
- screw thread
- present
- 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.)
- Pending
Links
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0094—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw the screw being assembled or manufactured from several components, e.g. a tip out of a first material welded to shaft of a second material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a bi-directional screw which comprises a first threaded rod, a second threaded rod, a gasket and a third threaded rod, wherein self-drilling spiral rabbets are formed in the first threaded rod; a first external screw thread is arranged on the second threaded rod; a second external screw thread is arranged on the third threaded rod; the screw thread rotation directions of the first external screw thread and the second external screw thread are opposite; and the gasket is positioned between the second threaded rod and the third threaded rod. According to the bi-directional screw, through the manner, the screw thread rotation directions of the first external screw thread and the second external screw thread are opposite, so that a bi-directional function is achieved; parts on the two sides of the gasket are respectively fixed through the second threaded rod and the third threaded rod; besides, the self-drilling spiral rabbets are formed in the first threaded rod, and a self drilling function is achieved; and the use effect is better, and the bi-directional screw is more convenient to use.
Description
Technical field
The present invention relates to fastener areas, particularly relate to a kind of Bidirectional screw.
Background technique
Screw utilizes the inclined-plane circular rotating of object and the physics of frictional force and mathematical principle, the by easy stages instrument of fastening implements parts, and present industry be unable to do without the use of screw in manufacturing.
Summary of the invention
The technical problem that the present invention mainly solves is to provide that one can two-wayly use, the better Bidirectional screw of using effect.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of Bidirectional screw, comprise: the first screw rod connected successively from top to bottom, the second screw rod, pad and the 3rd screw rod, described first screw rod is provided with self tapping boring spiral notch, described second screw rod is provided with the first outside thread, described 3rd screw rod is provided with the second outside thread, described first outside thread is contrary with described second externally threaded screw thread rotation direction, and described pad is between described second screw rod and described 3rd screw rod.
In a preferred embodiment of the present invention, described first externally threaded pitch is less than described second externally threaded pitch.
In a preferred embodiment of the present invention, the length of described second screw rod is greater than the length of described 3rd screw rod.
In a preferred embodiment of the present invention, the length of described first screw rod is 1/5 of described second spiro rod length.
The invention has the beneficial effects as follows: Bidirectional screw of the present invention is by contrary with the second externally threaded screw thread rotation direction by the first outside thread, thus can two-wayly use, the parts of pad both sides are fixed respectively by the second screw rod and the 3rd screw rod, and the 3rd screw rod is also provided with self tapping boring spiral notch, there is self tapping effect, using effect is better, uses also convenient.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of Bidirectional screw one of the present invention preferred embodiment.
Embodiment
Be clearly and completely described to the technological scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of Bidirectional screw, comprise: the first screw rod 1, second screw rod 2, pad 4 and the 3rd screw rod 3 that connect successively from top to bottom, described first screw rod 1 is provided with self tapping boring spiral notch 11, described second screw rod 2 is provided with the first outside thread 21, described 3rd screw rod 3 is provided with the second outside thread 31, the screw thread rotation direction of described first outside thread 21 and described second outside thread 31 is contrary, and described pad 4 is between described second screw rod 2 and described 3rd screw rod 3.
The pitch of described first outside thread 21 is less than the pitch of described second outside thread 31.
The length of described second screw rod 2 is greater than the length of described 3rd screw rod 3.
The length of described first screw rod 1 is 1/5 of described second screw rod 2 length.
Be different from prior art, Bidirectional screw of the present invention is by contrary with the second externally threaded screw thread rotation direction by the first outside thread, thus can two-wayly use, the parts of pad both sides are fixed respectively by the second screw rod and the 3rd screw rod, and the 3rd screw rod is also provided with self tapping boring spiral notch, have self tapping effect, using effect is better, uses also convenient.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a Bidirectional screw, it is characterized in that, comprise: the first screw rod connected successively from top to bottom, the second screw rod, pad and the 3rd screw rod, described first screw rod is provided with self tapping boring spiral notch, described second screw rod is provided with the first outside thread, described 3rd screw rod is provided with the second outside thread, and described first outside thread is contrary with described second externally threaded screw thread rotation direction, and described pad is between described second screw rod and described 3rd screw rod.
2. Bidirectional screw according to claim 1, is characterized in that, described first externally threaded pitch is less than described second externally threaded pitch.
3. Bidirectional screw according to claim 1, is characterized in that, the length of described second screw rod is greater than the length of described 3rd screw rod.
4. Bidirectional screw according to claim 1, is characterized in that, the length of described first screw rod is 1/5 of described second spiro rod length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005241.4A CN105443541A (en) | 2016-01-07 | 2016-01-07 | Bi-directional screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005241.4A CN105443541A (en) | 2016-01-07 | 2016-01-07 | Bi-directional screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443541A true CN105443541A (en) | 2016-03-30 |
Family
ID=55554077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610005241.4A Pending CN105443541A (en) | 2016-01-07 | 2016-01-07 | Bi-directional screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443541A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840621A (en) * | 2016-04-28 | 2016-08-10 | 苏州市林氏精密五金标准件制造有限公司 | Special-shaped dedicated screw |
| CN110206805A (en) * | 2019-07-11 | 2019-09-06 | 海盐精工标准件厂 | A kind of twin-screw self drilling tapping screw |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3043478A1 (en) * | 1980-02-12 | 1982-07-08 | Frank 5758 Fröndenberg Knoche | Asbestos cement type facade panel self tapping screw - has enlarged cutting section below head, for making larger holes |
| CN200943625Y (en) * | 2006-04-21 | 2007-09-05 | 庄诗泓 | Bidirectional screw |
| CN201125916Y (en) * | 2007-12-12 | 2008-10-01 | 钱根表 | Bidirectional screw |
| CN201521521U (en) * | 2008-09-05 | 2010-07-07 | 骊松·刘 | Two-way nail, two-way bolt and tool for mounting same |
| CN203098517U (en) * | 2013-03-06 | 2013-07-31 | 何江 | Double-head self-tapping screw assembly |
| CN204851891U (en) * | 2015-07-24 | 2015-12-09 | 王常委 | Stealthy formula cylinder connecting piece |
| CN205371224U (en) * | 2016-01-07 | 2016-07-06 | 太仓市德浩紧固件有限公司 | Two -way screw |
-
2016
- 2016-01-07 CN CN201610005241.4A patent/CN105443541A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3043478A1 (en) * | 1980-02-12 | 1982-07-08 | Frank 5758 Fröndenberg Knoche | Asbestos cement type facade panel self tapping screw - has enlarged cutting section below head, for making larger holes |
| CN200943625Y (en) * | 2006-04-21 | 2007-09-05 | 庄诗泓 | Bidirectional screw |
| CN201125916Y (en) * | 2007-12-12 | 2008-10-01 | 钱根表 | Bidirectional screw |
| CN201521521U (en) * | 2008-09-05 | 2010-07-07 | 骊松·刘 | Two-way nail, two-way bolt and tool for mounting same |
| CN203098517U (en) * | 2013-03-06 | 2013-07-31 | 何江 | Double-head self-tapping screw assembly |
| CN204851891U (en) * | 2015-07-24 | 2015-12-09 | 王常委 | Stealthy formula cylinder connecting piece |
| CN205371224U (en) * | 2016-01-07 | 2016-07-06 | 太仓市德浩紧固件有限公司 | Two -way screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840621A (en) * | 2016-04-28 | 2016-08-10 | 苏州市林氏精密五金标准件制造有限公司 | Special-shaped dedicated screw |
| CN110206805A (en) * | 2019-07-11 | 2019-09-06 | 海盐精工标准件厂 | A kind of twin-screw self drilling tapping screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
|
| RJ01 | Rejection of invention patent application after publication |