CN201786859U - Internal and external pentagon screw - Google Patents
Internal and external pentagon screw Download PDFInfo
- Publication number
- CN201786859U CN201786859U CN2010202904031U CN201020290403U CN201786859U CN 201786859 U CN201786859 U CN 201786859U CN 2010202904031 U CN2010202904031 U CN 2010202904031U CN 201020290403 U CN201020290403 U CN 201020290403U CN 201786859 U CN201786859 U CN 201786859U
- Authority
- CN
- China
- Prior art keywords
- screw
- pentagon
- head
- internal
- head part
- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses an internal and external pentagon screw. The pentagon screw comprises a head part (1) and a rod part (4), wherein the head part (1) is connected with the rod part (4) into a whole; an external pentagon (3) is arranged on the outer side of the head part (1); and an internal pentagon (2) is further arranged at the center of the head part (1). When the pentagon screw is used, a user can use two tools, namely an internal pentagon wrench and an external pentagon wrench, to screw in or screw out the screw, and the two tools supplements each other, thereby not only facilitating use, but also greatly increasing the use safety factor. When the screw is twisted by the external pentagon wrench which is matched with the pentagon screw, at least four angles of the external pentagon (3) at the head part (1) bear force; and when the screw is twisted by the internal pentagon wrench which is matched with the pentagon screw, the five angles of the internal pentagon (2) at the head part (1) all bear force, thereby solving the problem that the tools are easy to slip when driving the head part (1) to rotate. The utility model belongs to the technical field of screws.
Description
Technical field
The utility model belongs to the screw technical field, especially relates to a kind of inside and outside pentagonal screw.
Background technique
Screw of the prior art generally comprises head and bar portion, head and bar portion are connected as a single entity, the head outside is provided with outer-hexagonal or head central authorities are provided with interior hexagonal, frequently be screwed into especially or the occasion of the screw of back-outing for needs, there is following technological deficiency in the screw of said structure: after the outer-hexagonal of head or interior hexagonal are damaged to some extent, can cause screw to be screwed into or the difficulty of back-outing, even can't turn screw, therefore use less certain.In addition, most outer-hexagonal screws be screwed into back-out can image two plate holders that are interpreted as live the symmetrical both sides of outer-hexagonal screw, rotate by two clamping plate time then and drive screw and rotate.The application of force on the external HEX HEAD CAP SCREWS of this mode only acts on wherein two angles of outer-hexagonal screw, under the bigger situation of the application of force, skids easily between instrument and the screw, and screw is easily twisted bad.
The model utility content
Technical problem to be solved in the utility model is: a kind of inside and outside pentagonal screw that uses insurance and instrument to be difficult for skidding when rotating together is provided.
Technical solution adopted in the utility model is: a kind of inside and outside pentagonal screw, comprise head and bar portion, and head and bar portion are connected as a single entity, and the outside of described head is provided with Wai Wujiao, and the central authorities of head also are provided with Nei Wujiao, and described bar subordinate end portion is provided with screw thread.
The beneficial effects of the utility model are: head is provided with Wai Wujiao and Nei Wujiao simultaneously, is screwed into or can uses the outer five jiao spanners supporting with it or interior five jiaos of instruments such as spanner when back-outing screw, and is easy to use; In outer five jiaos or interior five jiaos of head a damage is arranged, still can in another way screw be screwed into or back-out, dual mode complements one another, and has improved the practical safety of screw.In addition, when turning screw with the supporting outer five jiaos of spanners of the utility model, outer five jiaos have at least four angles stressed on the head; When turning screw with the supporting interior five jiaos of spanners of the utility model, on the head in five angles of five jiaos all stressed.Thereby solved easy problem of slip between instrument and the screw.
Description of drawings
Fig. 1 is a general structure schematic representation of the present utility model.
Fig. 2 is the plan view of Fig. 1.
Among the figure, 1. head, 2. in five jiaos, 3. outer five jiaos, 4. bar portion, 5. screw thread
Embodiment
Below be the utility model preferred embodiment, but therefore do not limit protection domain of the present utility model.
With reference to Fig. 1, shown in Figure 2, a kind of embodiment of the inside and outside pentagonal screw of the utility model, it comprises head 1 and bar portion 4, head 1 is connected as a single entity with bar portion 4, the outside of described head 1 is provided with outer five jiao 3, and the central authorities of head 1 establish and also are provided with interior five jiao 2, and described bar portion 4 end portions are provided with screw thread 5.Described outer five jiao 3 just head 1 excircle be pentagon.Described in five jiao 2 just head 1 central authorities be the pentagon blind hole.Outer five jiao 3 of head 1 can match with outer five jiaos of spanners, and interior five jiao 2 of head 1 can match with interior five jiaos of spanners.Can drive screw with outer five jiaos of spanners or interior five jiaos of spanners when practical rotates, in outer five jiao 3 or interior five jiao 2 of head 1, a damage is arranged, still can in another way screw be screwed into or back-out, dual mode complements one another, and has improved the practical safety of screw.In addition,, be different from Hexagon, therefore do not have symmetrical limit owing to all be pentagon inside and outside the utility model head 1.When turning screw with the supporting outer five jiaos of spanners of the utility model, outer five jiao 2 has at least four angles stressed on the head 1; When turning screw with the supporting interior five jiaos of spanners of the utility model, on the head 1 in five angles of five jiao 3 all stressed.The easy problem of slip of screw when thereby the instrument that solved drives the screw rotation.
Claims (1)
1. pentagonal screw inside and outside a kind, comprise head (1) and bar portion (4), head (1) is connected as a single entity with bar portion (4), and it is characterized in that: the outside of described head (1) is provided with Wai Wujiao (3), the central authorities of head (1) are provided with Nei Wujiao (2), and described bar portion (4) end portion is provided with screw thread (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202904031U CN201786859U (en) | 2010-08-09 | 2010-08-09 | Internal and external pentagon screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202904031U CN201786859U (en) | 2010-08-09 | 2010-08-09 | Internal and external pentagon screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786859U true CN201786859U (en) | 2011-04-06 |
Family
ID=43818824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202904031U Expired - Fee Related CN201786859U (en) | 2010-08-09 | 2010-08-09 | Internal and external pentagon screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786859U (en) |
-
2010
- 2010-08-09 CN CN2010202904031U patent/CN201786859U/en not_active Expired - Fee Related
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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: 20110406 Termination date: 20130809 |