CN102788071A - Over-screwing prevention screw - Google Patents
Over-screwing prevention screw Download PDFInfo
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- CN102788071A CN102788071A CN2012102310978A CN201210231097A CN102788071A CN 102788071 A CN102788071 A CN 102788071A CN 2012102310978 A CN2012102310978 A CN 2012102310978A CN 201210231097 A CN201210231097 A CN 201210231097A CN 102788071 A CN102788071 A CN 102788071A
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Abstract
The invention relates to an over-screwing prevention screw which comprises a screw head portion (1), a screw tail portion (2) and a twist-off object, wherein an external thread is formed on the screw tail portion(2), and the twist-off object is arranged on the upper end face of the screw head portion (1). A cross-shaped groove (5) or a linear groove (6) is formed on the upper end face of the twist-off object, torque of the twist-off object twisting off from the screw head portion (1) corresponds to torque for right screwing the screw down, and a connection hole (7) with an internal thread is formed on the upper end face of the screw head portion (1). An external thread matched with the internal thread is formed at the end of the twist-off object connected with the screw head portion (1), a rotating device (9) which can be held by hands conveniently to perform rotation is arranged between the part of twist-off object where the external thread is formed and the easily-broken position on the twist-off object, and a groove suitable for the head of a screw driver to extend in is formed on the upper end face of the screw head portion (1). According to the over-screwing prevention screw, the twist-off object and the screw head portion are connected detachably.
Description
The application is to be on April 13rd, 2011 applying date, and application number is 201110093098.6, and denomination of invention is divided an application for the anti-application for a patent for invention of turning round screw.
Technical field
The present invention relates to a kind of screw.
Background technique
A kind of screw is arranged in the existing technology; Comprise screw head; And form externally threaded screw afterbody; Also be provided with one on the upper-end surface of screw head and twist off thing, twist off on the upper-end surface of thing and form cross recess or straight groove, and it is suitable with the moment of torsion of tightening screw just from the moment of torsion that screw head twists off to twist off thing.The screw of this existing technology can be held screw-down torque well, avoids the screw overtorquing, and the fastening face of connected piece is damaged; Or twist too loosely, screw such as deviates from easily at the generation of situation under the effect of external force.But also there is following shortcoming in actual use: 1, in this existing technology, twist off thing and be connected, so after twisting off with being connected to of screw head is on-dismountable; Twisting off the thing residual fraction can not unload; Therefore can not refill the new thing that twists off, add and be not provided with the groove that supplies the screw-driver head to stretch on the screw head surface, and be not easy to dismounting and installation; So the screw of this existing technology can only be used once usually, has caused the very big waste of resource.
Summary of the invention
For this reason; Technical problem to be solved by this invention is that screw of the prior art is on-dismountable the connection with twisting off between the thing; And cause screw can only use once, from causing the waste problem of resource, a kind of screw that being connected to of thing and screw head removably connects that twists off is provided.
For solving the problems of the technologies described above; A kind of anti-screw of turning round of the present invention; Comprise screw head, form externally threaded screw afterbody, and be arranged on said screw head the upper-end surface twist off thing; Form cross recess or straight groove on the said upper-end surface that twists off thing; And to twist off the moment of torsion that thing twists off from said screw head suitable with the moment of torsion of tightening said screw just with said, the female attachment hole of upper-end surface moulding of said screw head, the said outside thread that forms on thing and the end that said screw head is connected with said screw-internal thread fit that twists off.
Described screw, said twisting off between externally threaded part of forming of thing and the said easily broken part that twists off on the thing is provided with the slewing gear of being convenient to hold rotation.
Described screw, said slewing gear are handwheel.
The said thing that twists off is made up of cylindrical head, intermediate portion and cylindrical tail portion; Wherein, said intermediate portion is cylindrical, and diameter is minimum; And said outside thread is molded on the said cylindrical tail portion, and said cross recess or straight groove are molded over the upper-end surface of said cylindrical head.
Described screw, said cylindrical head is 3: 1 with the diameter ratio of said intermediate portion.
Described screw; Saidly twist off cylindrical head, intermediate portion and the cylindrical tail portion that thing successively decreases by diameter successively and constitute; It is conical that wherein said intermediate portion is; And its minimum diameter is less than the diameter of said cylindrical tail portion, and said outside thread is molded on the said cylindrical tail portion, and said cross recess or straight groove are molded over the upper-end surface of said cylindrical head.
Described screw, the tapering of said intermediate portion are 10-30 °.
Described screw also forms the groove that suitable screw-driver head stretches on the upper-end surface of said screw head.
Technique scheme of the present invention is compared existing technology and is had the following advantages:
1, in the present invention; The female attachment hole of upper-end surface moulding of screw head; Twist off the outside thread that forms on the end that thing is connected with screw head with screw-internal thread fit, make after twisting off thing and twisting off, can the residual thing that twists off partly be dismantled; Again refill one and newly twist off thing, make this screw to use repeatedly.
2, in the present invention; Twist off the externally threaded part of forming of thing and twist off between the easily broken part on the thing and be provided with the slewing gear of being convenient to hold rotation; Twist off thing after easily broken part fracture, what remain in screw head is male end and the slewing gear that twists off thing, during dismounting; Through hand twisting slewing gear, can very easily male end be disassembled.
3, in the present invention, twist off the cylindrical head that thing is successively decreased by diameter successively, and conical afterbody 4 formations, can make the place of twisting off as far as possible near groove 7 bottoms, thereby make that the nubbin that remains in the groove 7 is few, more attractive in appearance.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the plan view of embodiments of the invention 1;
Fig. 2 is the plan view of embodiments of the invention 2;
Fig. 3 is the plan view that forms straight groove on the screw of the present invention;
Form the cross recessed plan view on Fig. 4 screw of the present invention
Fig. 5 is the plan view of embodiments of the invention 3.
Reference character is expressed as among the figure: 1-screw head, 2-screw afterbody, 3-cylindrical head, 4-cylindrical tail portion, 5-cross recess, 6-straight groove, 7-attachment hole, 8-intermediate portion, 9-slewing gear 9.
Embodiment
Like Fig. 1, Fig. 3, shown in Figure 4; 1 one kinds of anti-screws of turning round of present embodiment; Comprise screw head 1, form externally threaded screw afterbody 2, and be arranged on said screw head 1 the upper-end surface twist off thing; Form cross recess 5 or straight groove 6 on the said upper-end surface that twists off thing; And to twist off the moment of torsion that thing twists off from said screw head 1 suitable with the moment of torsion of tightening said screw just with said, the female attachment hole 7 of the upper-end surface moulding of said screw head 1, the said outside thread that forms on thing and the end that said screw head 1 is connected with said screw-internal thread fit that twists off.The female attachment hole 7 of moulding be molded over said externally threaded cooperation that twists off on the thing, make after twisting off thing and twisting off, can the residual thing that twists off partly be dismantled, refill one again and newly twist off thing; Make this screw to use repeatedly, in the present embodiment, the said thing that twists off is by cylindrical head 3; Intermediate portion 8, and cylindrical tail portion 4 formations, wherein; Said intermediate portion 8 is cylindrical, and diameter is minimum, guarantees to twist off to occur in said intermediate portion 8; Be convenient to the follow-up dismounting that twists off the thing residual fraction like this, and said outside thread is molded on the said cylindrical tail portion 4, said cross recess 5 or straight groove 6 are molded over the upper-end surface of said cylindrical head 3.Also form on the upper-end surface of said screw head 1 and be fit to the groove that the screw-driver head stretches into.Said cylindrical head 3 is 3: 1 with the diameter ratio of said intermediate portion 8.
As shown in Figure 2, said twisting off between externally threaded part of forming of thing and the said easily broken part that twists off on the thing is provided with the slewing gear 9 of being convenient to hold rotation.In the present embodiment, said slewing gear 9 is a handwheel.Twist off the externally threaded part of forming of thing and twist off between the easily broken part on the thing and be provided with the slewing gear of being convenient to hold rotation; Twist off thing after easily broken part fracture; What remain in screw head is male end and the slewing gear that twists off thing; During dismounting,, can very easily male end be disassembled through hand twisting slewing gear.
As shown in Figure 5; In above-mentioned all embodiments, saidly twist off the cylindrical head 3 that thing can also be successively decreased by diameter successively, intermediate portion 8 and conical afterbody 4 constitute; It is conical that wherein said intermediate portion 8 is; And its minimum diameter is less than the diameter of said cylindrical tail portion 4, and said outside thread is molded on the said cylindrical tail portion 4, and said cross recess 5 or straight groove 6 are molded over the upper-end surface of said cylindrical head 3.The tapering of said intermediate portion 8 is 10-30 °.Twist off the cylindrical head that thing is successively decreased by diameter successively, and conical afterbody 4 formations, can make the place of twisting off as far as possible near groove 7 bottoms, thereby make that the nubbin that remains in the groove 7 is few, more attractive in appearance.
Obviously, the foregoing description only is for giving an example of being done clearly is described, is not the qualification to mode of execution.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (1)
1. prevent turning round screw for one kind; Comprise screw head (1); Form externally threaded screw afterbody (2); And be arranged on said screw head (1) the upper-end surface twist off thing, form cross recess (5) or straight groove (6) on the said upper-end surface that twists off thing, and to twist off thing suitable with the moment of torsion of tightening said screw just from the moment of torsion that said screw head (1) twists off with said; The female attachment hole of upper-end surface moulding (7) of said screw head (1); The said outside thread that forms on thing and the end that said screw head (1) is connected with said screw-internal thread fit that twists off, it is characterized in that: forming between externally threaded part and the said easily broken part that twists off on the thing that the thing that twists off is stated is provided with the slewing gear (9) of being convenient to hold rotation, also forms on the upper-end surface of said screw head (1) to be fit to the groove that the screw-driver head stretches into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102310978A CN102788071A (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102310978A CN102788071A (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110093098A Division CN102162485B (en) | 2011-04-13 | 2011-04-13 | Anti-twisting screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102788071A true CN102788071A (en) | 2012-11-21 |
Family
ID=47153586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102310978A Pending CN102788071A (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102788071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561404A (en) * | 2018-07-13 | 2018-09-21 | 嘉兴涵祺汽配科技有限公司 | A kind of high-strength bolt easy to use |
| CN110159633A (en) * | 2019-06-04 | 2019-08-23 | 海盐鼎丰紧固件有限公司 | A kind of high-strength bolt for being not easy to twist into two parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027796A (en) * | 1957-05-21 | 1962-04-03 | Daniel C Shewmon | Bolt with driving head shearable at pre-determined torque |
| JP2000220621A (en) * | 1999-02-01 | 2000-08-08 | Ricoh Co Ltd | Screwing tool |
| CN1451889A (en) * | 2002-04-12 | 2003-10-29 | 太西正胜 | Assigned torsion nut |
| EP1460278A1 (en) * | 2003-03-17 | 2004-09-22 | Pfisterer Kontaktsysteme GmbH & Co. KG | Fastener, especially a shearable screw and associated clamping device |
| CN202001462U (en) * | 2011-04-13 | 2011-10-05 | 陈文才 | Manually detachable over-twisting prevention screw |
-
2011
- 2011-04-13 CN CN2012102310978A patent/CN102788071A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027796A (en) * | 1957-05-21 | 1962-04-03 | Daniel C Shewmon | Bolt with driving head shearable at pre-determined torque |
| JP2000220621A (en) * | 1999-02-01 | 2000-08-08 | Ricoh Co Ltd | Screwing tool |
| CN1451889A (en) * | 2002-04-12 | 2003-10-29 | 太西正胜 | Assigned torsion nut |
| EP1460278A1 (en) * | 2003-03-17 | 2004-09-22 | Pfisterer Kontaktsysteme GmbH & Co. KG | Fastener, especially a shearable screw and associated clamping device |
| CN202001462U (en) * | 2011-04-13 | 2011-10-05 | 陈文才 | Manually detachable over-twisting prevention screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561404A (en) * | 2018-07-13 | 2018-09-21 | 嘉兴涵祺汽配科技有限公司 | A kind of high-strength bolt easy to use |
| CN110159633A (en) * | 2019-06-04 | 2019-08-23 | 海盐鼎丰紧固件有限公司 | A kind of high-strength bolt for being not easy to twist into two parts |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121121 |