CN205371224U - Two -way screw - Google Patents
Two -way screw Download PDFInfo
- Publication number
- CN205371224U CN205371224U CN201620008145.0U CN201620008145U CN205371224U CN 205371224 U CN205371224 U CN 205371224U CN 201620008145 U CN201620008145 U CN 201620008145U CN 205371224 U CN205371224 U CN 205371224U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- screw thread
- utility
- model
- 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
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a two -way screw, include: the first screw rod, second screw rod, gasket and the third screw rod that connect gradually extremely down on the follow, be equipped with self tapping drilling spiral notch on the first screw rod, be equipped with first external screw thread on the second screw rod, be equipped with the second external screw thread on the third screw rod, first external screw thread with the screw thread direction of rotation of second external screw thread is opposite, the gasket is located the second screw rod with between the third screw rod. In this way, the utility model discloses two -way screw is opposite through the screw thread direction of rotation with first external screw thread and second external screw thread to can bidirectional possibility, come the parts of setting up piece both sides respectively through second screw rod and third screw rod, and still be equipped with self tapping drilling spiral notch on the third screw rod, have the self tapping effect, the result of use is better, and it is also more convenient to use.
Description
Technical field
This utility model relates to fastener areas, particularly relates to a kind of Bidirectional screw.
Background technology
Screw is to utilize the inclined-plane circular rotating of object and the physics of frictional force and mathematical principle, fastens the instrument of implements parts by easy stages, and present industry has be unable to do without the use of screw in manufacturing.
Utility model content
This utility model is mainly solving the technical problems that offer one can two-way use, the better Bidirectional screw of result of use.
For solving above-mentioned technical problem, the technical scheme that this utility model adopts is: provide a kind of Bidirectional screw, including: the first screw rod, the second screw rod, pad and the 3rd screw rod being sequentially connected with from top to bottom, described first screw rod is provided with self tapping boring spiral notch, described second screw rod is provided with the first external screw thread, described 3rd screw rod is provided with the second external screw thread, described first external screw thread and described second externally threaded screw thread rotation are in opposite direction, and described pad is between described second screw rod and described 3rd screw rod.
In one preferred embodiment of this utility model, described first externally threaded pitch is less than described second externally threaded pitch.
In one preferred embodiment of this utility model, the length of described second screw rod is more than the length of described 3rd screw rod.
In one preferred embodiment of this utility model, the length of described first screw rod is the 1/5 of described second spiro rod length.
The beneficial effects of the utility model are: this utility model Bidirectional screw is by by opposite direction for externally threaded to the first external screw thread and second screw thread rotation, it is thus possible to two-way use, the parts of pad both sides are fixed respectively through the second screw rod and the 3rd screw rod, and the 3rd screw rod is additionally provided with self tapping boring spiral notch, there is self tapping effect, result of use is better, uses also convenient.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of Bidirectional screw one of the present utility model preferred embodiment.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Referring to Fig. 1, this utility model embodiment includes:
A kind of Bidirectional screw, including: first screw rod the 1, second screw rod 2, pad 4 and the 3rd screw rod 3 being sequentially connected with 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 external screw thread 21, described 3rd screw rod 3 is provided with the second external screw thread 31, the screw thread rotation of described first external screw thread 21 and described second external screw thread 31 is in opposite direction, and described pad 4 is between described second screw rod 2 and described 3rd screw rod 3.
The pitch of described first external screw thread 21 is less than the pitch of described second external screw thread 31.
The length of described second screw rod 2 is more than the length of described 3rd screw rod 3.
The length of described first screw rod 1 is the 1/5 of described second screw rod 2 length.
It is different from prior art, this utility model Bidirectional screw is by by opposite direction for externally threaded to the first external screw thread and second screw thread rotation, it is thus possible to two-way use, the parts of pad both sides are fixed respectively through the second screw rod and the 3rd screw rod, and the 3rd screw rod is additionally provided with self tapping boring spiral notch, having self tapping effect, result of use is better, uses also convenient.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in scope of patent protection of the present utility model.
Claims (4)
1. a Bidirectional screw, it is characterized in that, including: the first screw rod, the second screw rod, pad and the 3rd screw rod being sequentially connected with from top to bottom, described first screw rod is provided with self tapping boring spiral notch, described second screw rod is provided with the first external screw thread, it is in opposite direction that described 3rd screw rod is provided with the second external screw thread, described first external screw thread and described second externally threaded screw thread rotation, and described pad is between described second screw rod and described 3rd screw rod.
2. Bidirectional screw according to claim 1, it is characterised in that described first externally threaded pitch is less than described second externally threaded pitch.
3. Bidirectional screw according to claim 1, it is characterised in that the length of described second screw rod is more than the length of described 3rd screw rod.
4. Bidirectional screw according to claim 1, it is characterised in that the length of described first screw rod is the 1/5 of described second spiro rod length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620008145.0U CN205371224U (en) | 2016-01-07 | 2016-01-07 | Two -way screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620008145.0U CN205371224U (en) | 2016-01-07 | 2016-01-07 | Two -way screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371224U true CN205371224U (en) | 2016-07-06 |
Family
ID=56275226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620008145.0U Expired - Fee Related CN205371224U (en) | 2016-01-07 | 2016-01-07 | Two -way screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443541A (en) * | 2016-01-07 | 2016-03-30 | 太仓市德浩紧固件有限公司 | Bi-directional screw |
-
2016
- 2016-01-07 CN CN201620008145.0U patent/CN205371224U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443541A (en) * | 2016-01-07 | 2016-03-30 | 太仓市德浩紧固件有限公司 | Bi-directional screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205371224U (en) | Two -way screw | |
| CN105443541A (en) | Bi-directional screw | |
| CN204164124U (en) | A kind of bolt with locking device | |
| CN204357907U (en) | Space shuttle backing-up screw | |
| CN205371239U (en) | Flute bolt | |
| CN203394974U (en) | Convenient and stable thread structure | |
| CN103277386B (en) | A kind of convenient stable helicitic texture | |
| CN205130703U (en) | Pencil extender | |
| CN203906503U (en) | Multifunctional round head type bolt | |
| CN205371238U (en) | Rag bolt with spline | |
| CN203081339U (en) | Guy adjusting lead screw | |
| CN202484037U (en) | Novel step-shaped fixed bolt | |
| CN206770353U (en) | Trip bolt | |
| CN203906496U (en) | Multifunctional screw convenient to use | |
| CN206159228U (en) | Bolt of sealed function in area | |
| CN203907066U (en) | Novel multifunctional flange convenient to use | |
| CN203665451U (en) | Threaded insert installation device | |
| CN103982514A (en) | Multifunctional combined bolt | |
| CN203906492U (en) | Multifunctional bolt | |
| CN105508383A (en) | Slender waist bolt | |
| CN105402235A (en) | Corrugated bolt | |
| CN203944951U (en) | One species stage screw tap | |
| CN204061856U (en) | Axial adjustment formula plunger | |
| CN203322000U (en) | Screw rod with grooves | |
| CN206280344U (en) | A kind of movable joint screw |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20170107 |