CN201433989Y - Plug screw - Google Patents
Plug screw Download PDFInfo
- Publication number
- CN201433989Y CN201433989Y CN2009201248973U CN200920124897U CN201433989Y CN 201433989 Y CN201433989 Y CN 201433989Y CN 2009201248973 U CN2009201248973 U CN 2009201248973U CN 200920124897 U CN200920124897 U CN 200920124897U CN 201433989 Y CN201433989 Y CN 201433989Y
- Authority
- CN
- China
- Prior art keywords
- plug screw
- screw
- plug
- hollow
- cored
- 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 discloses a plug screw which comprises a plug screw head (1) and a hollow screw rod (2) integrated with the plug screw head (1); an internal thread (3) is arranged on the inner wallof the hollow cavity (6) of the hollow screw rod (2), and an external thread (4) is arranged on the external wall of the hollow screw rod; the top center of the plug screw is also provided with an oilhole (5); and the oil hole (5) is communicated with the hollow cavity (6) of the hollow screw rod (2). The plug screw has the advantages that: lubricant can be added to the inner wall of the plug screw, the friction force between the internal thread of the hollow screw rod and the part can be greatly reduced, and the plug screw can be disassembled conveniently.
Description
Technical field
The utility model relates to a kind of plug screw.
Background technique
At present, the plug screw of prior art is made of plug screw head and cored screw usually; Described cored screw inwall is provided with internal thread, and its outer wall is provided with outside thread.Though the plug screw of said structure is simple in structure; but still there is a deficiency in it: when promptly plug screw is connected with other part; usually can produce frictional force between plug screw and other part; and when their long-time connections; may make that also the frictional force between them increases because plug screw or part get rusty; at this moment people usually can add oiling agent to reach lubrication in the joint of plug screw and part, reduce between the two frictional force so that plug screw dismantle.But because described cored screw inwall is provided with internal thread, its outer wall is provided with outside thread, therefore, when all being connected with part on the inside and outside wall of described cored screw, because stopping of exterior part, making people can't give the inwall of cored screw is that internal thread adds oiling agent, thereby causes the frictional force of cored screw inwall joint excessive easily, is not easy to the dismounting of plug screw.
The model utility content
The technical problems to be solved in the utility model is that providing a kind of can add oiling agent toward the plug screw inwall, thereby reduces the frictional force between cored screw internal thread and the part, easy-to-dismount plug screw greatly.
For solving the problems of the technologies described above, the utility model provides a kind of plug screw that adopts following structure, it by the plug screw head and with the plug screw head be that holistic cored screw constitutes; The cavity inner wall of described cored screw is provided with internal thread, and its outer wall is provided with outside thread; The top center place of described plug screw head also is provided with an oil through; Described oil through communicates with the cavity of cored screw.
After adopting said structure, the utlity model has following advantage: compared with prior art, because the plug screw head top center of the utility model plug screw is provided with an oil through, and oil through is to communicate with the cavity of cored screw, therefore, people can add oiling agent toward the inwall of cored screw easily by oil through, thereby have reduced the frictional force of cored screw inwall joint greatly, have reduced the dismounting difficulty of plug screw.
Description of drawings
Fig. 1 is the structural representation of the utility model plug screw.
Fig. 2 is the plan view of the utility model plug screw.
Shown in the figure 1, the plug screw head, 2, cored screw, 3, internal thread, 4, outside thread, 5, oil through, 6, cavity.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, in this specific embodiment, the utility model plug screw constitutes for holistic cored screw 2 by plug screw head 1 and with plug screw head 1; Cavity 6 inwalls of described cored screw 2 are provided with internal thread 3, and its outer wall is provided with outside thread 4; The top center place of described plug screw head 1 also is provided with an oil through 5; Described oil through 5 communicates with the cavity 6 of cored screw 2.
Claims (1)
1, a kind of plug screw, it by plug screw head (1) and with plug screw head (1) be that holistic cored screw (2) constitutes; Cavity (6) inwall of described cored screw (2) is provided with internal thread (3), and its outer wall is provided with outside thread (4), it is characterized in that: the top center place of described plug screw head (1) also is provided with an oil through (5); Described oil through (5) communicates with the cavity (6) of cored screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201248973U CN201433989Y (en) | 2009-07-21 | 2009-07-21 | Plug screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201248973U CN201433989Y (en) | 2009-07-21 | 2009-07-21 | Plug screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433989Y true CN201433989Y (en) | 2010-03-31 |
Family
ID=42052797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201248973U Expired - Fee Related CN201433989Y (en) | 2009-07-21 | 2009-07-21 | Plug screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433989Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134948A (en) * | 2015-09-29 | 2015-12-09 | 北京汽车研究总院有限公司 | Oil drain plug structure assembly and automobile |
| CN105179417A (en) * | 2015-07-22 | 2015-12-23 | 苏州迪诺环保科技有限公司 | Screw |
| CN106402127A (en) * | 2016-10-27 | 2017-02-15 | 苏州市淞舜五金有限公司 | Special-shaped nut |
-
2009
- 2009-07-21 CN CN2009201248973U patent/CN201433989Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179417A (en) * | 2015-07-22 | 2015-12-23 | 苏州迪诺环保科技有限公司 | Screw |
| CN105134948A (en) * | 2015-09-29 | 2015-12-09 | 北京汽车研究总院有限公司 | Oil drain plug structure assembly and automobile |
| CN106402127A (en) * | 2016-10-27 | 2017-02-15 | 苏州市淞舜五金有限公司 | Special-shaped nut |
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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: 20100331 Termination date: 20120721 |