CN103115052A - Cored screw incapable of plugging screw hole after breakage - Google Patents
Cored screw incapable of plugging screw hole after breakage Download PDFInfo
- Publication number
- CN103115052A CN103115052A CN2013100554243A CN201310055424A CN103115052A CN 103115052 A CN103115052 A CN 103115052A CN 2013100554243 A CN2013100554243 A CN 2013100554243A CN 201310055424 A CN201310055424 A CN 201310055424A CN 103115052 A CN103115052 A CN 103115052A
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- Prior art keywords
- screw
- screw hole
- cored
- plugging
- main body
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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 invention relates to a screw incapable of plugging a screw hole after breakage, in particular to a cored screw incapable of plugging a screw hole after breakage and solves the problem that mechanical breakdown is always caused by the fact that an existing screw which is broken is hard to remove and results in plugging the screw hole. The cored screw comprises a screw top and a screw body, the screw body is provided with a cavity inside along the axis direction, and the upper end face of the screw body and the lower surface of the screw top are fixedly integrally connected. The cored screw is used for the field of machinery.
Description
Technical field
The present invention relates to a kind of screw of the rear obstruction screw hole of avoiding fractureing, be specifically related to a kind of cored screw of the rear obstruction screw hole of avoiding fractureing.
Background technique
Present most of screw is all solid making, and solid screw is in being screwed into the process of screw hole, and because undue force often fractures, the screw after fractureing is retained in screw hole inside, is difficult to remove, and stops up screw hole.Can't dismantle when screw hole and machinery are consolidated, often can cause large mechanical failure.
Summary of the invention
The present invention is difficult to remove for solving existing screw when screw hole inside fractures, and stops up screw hole, often causes the problem of mechanical failure, and then proposes a kind of cored screw of the rear obstruction screw hole of avoiding fractureing.
The present invention addresses the above problem the technological scheme of taking to be: the present invention includes screw top and screw main body, is provided with cavity along axial direction in the screw main body, the upper end end face of screw main body is fixedly connected with the lower surface at screw top and is integral.
The invention has the beneficial effects as follows: the present invention can back-out with the screw main body that common Flathead screwdriver or cruciate flower screw-driver will remain in screw hole, solved traditional solid screw rear obstruction screw hole that fractures, the problem that can't clear up, avoid causing great mechanical failure, save simultaneously the material of making screw, alleviated the weight of screw.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention, Fig. 2 be cavity cross section when being rectangle in Fig. 1 A-A to sectional view, Fig. 3 be cavity cross section when being cross in Fig. 1 A-A to sectional view.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, the cored screw of the described a kind of rear obstruction screw hole of avoiding fractureing of present embodiment comprises screw top 1 and screw main body 2, screw main body 2 is interior is provided with cavity 3 along axial direction, and the upper end end face of screw main body 2 is fixedly connected with the lower surface at screw top 1 and is integral.
Embodiment two: in conjunction with Fig. 2, present embodiment is described, the cross section of the cavity 3 of the cored screw of the described a kind of rear obstruction screw hole of avoiding fractureing of present embodiment is rectangle.
The beneficial effect of present embodiment is: the cross section of cavity 3 is rectangle, and when screw main body 2 fractureed in screw hole, the screw main body 2 that will remain in screw hole after can fractureing by Flathead screwdriver was back-outed.
Other composition and annexation are identical with embodiment one.
Embodiment three: in conjunction with Fig. 3, present embodiment is described, the cross section of the cavity 3 of the cored screw of the described a kind of rear obstruction screw hole of avoiding fractureing of present embodiment is cross.
The technique effect of present embodiment is: the cross section of cavity 3 is cross, and when screw main body 2 fractureed in screw hole, the screw main body 2 that will remain in screw hole after can fractureing by cruciate flower screw-driver or Flathead screwdriver was back-outed.
Other composition and annexation are identical with embodiment one.
Working principle
When the present invention fractureed in screw hole, the cavity 3 in screw main body 2 exposed, and snapped in cavity 3 by Flathead screwdriver or cruciate flower screw-driver, and the screw main body 2 that can will remain in screw hole is back-outed.
Claims (3)
1. the cored screw of the rear obstruction screw hole of can avoiding fractureing, it comprises screw top (1) and screw main body (2), it is characterized in that: be provided with cavity (3) along axial direction in screw main body (2), the upper end end face of screw main body (2) is fixedly connected with the lower surface at screw top (1) and is integral.
2. a kind of cored screw of the rear obstruction screw hole of avoiding fractureing according to claim 1, it is characterized in that: the cross section of cavity (3) is rectangle.
3. a kind of cored screw of the rear obstruction screw hole of avoiding fractureing according to claim 1, it is characterized in that: the cross section of cavity (3) is cross.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100554243A CN103115052A (en) | 2013-02-21 | 2013-02-21 | Cored screw incapable of plugging screw hole after breakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100554243A CN103115052A (en) | 2013-02-21 | 2013-02-21 | Cored screw incapable of plugging screw hole after breakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103115052A true CN103115052A (en) | 2013-05-22 |
Family
ID=48413470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100554243A Pending CN103115052A (en) | 2013-02-21 | 2013-02-21 | Cored screw incapable of plugging screw hole after breakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103115052A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2335741A (en) * | 1943-01-15 | 1943-11-30 | Contaldi Pasquale | Tap for cutting internal screw threads |
| US4762444A (en) * | 1987-03-16 | 1988-08-09 | Mena Carl M | Screw tap with lubrication and extraction bores |
| CN101915258A (en) * | 2010-08-09 | 2010-12-15 | 宁波东港紧固件制造有限公司 | Inner pentagonal screw |
| CN102151918A (en) * | 2011-04-27 | 2011-08-17 | 扬州江宇刃具有限公司 | Novel screw tap |
-
2013
- 2013-02-21 CN CN2013100554243A patent/CN103115052A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2335741A (en) * | 1943-01-15 | 1943-11-30 | Contaldi Pasquale | Tap for cutting internal screw threads |
| US4762444A (en) * | 1987-03-16 | 1988-08-09 | Mena Carl M | Screw tap with lubrication and extraction bores |
| CN101915258A (en) * | 2010-08-09 | 2010-12-15 | 宁波东港紧固件制造有限公司 | Inner pentagonal screw |
| CN102151918A (en) * | 2011-04-27 | 2011-08-17 | 扬州江宇刃具有限公司 | Novel screw tap |
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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 | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |