CN202001463U - Detachable overtwist-preventing screw - Google Patents
Detachable overtwist-preventing screw Download PDFInfo
- Publication number
- CN202001463U CN202001463U CN2011201078575U CN201120107857U CN202001463U CN 202001463 U CN202001463 U CN 202001463U CN 2011201078575 U CN2011201078575 U CN 2011201078575U CN 201120107857 U CN201120107857 U CN 201120107857U CN 202001463 U CN202001463 U CN 202001463U
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- China
- Prior art keywords
- screw
- thing
- head
- screw head
- twist
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- Expired - Fee Related
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Abstract
The utility model relates to a detachable overtwist-preventing screw, comprising a screw head (1), a screw tail (2) and a twist-off object, wherein outer threads are formed on the screw tail (2), the twist-off object is arranged on the upper end face of the screw head (1), a cruciform slot (5) or a straight slot (6) is formed on the upper end face of the twist-off object, the torsion for twisting off the twist-off object from the screw head (1) is equivalent to the torsion for exactly screwing down the screw, a connecting hole (7) with inner threads is formed on the upper end face of the screw head (1), and outer threads matched with the inner threads are formed on one end of the twist-off object, connected with the screw head (1). The utility model provides the screw with the screw head in detachable connection with the twist-off object.
Description
Technical field
The utility model relates to a kind of screw.
Background technique
A kind of anti-screw of turning round is arranged in the prior art, 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 the prior art 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 the prior art, twisting off thing is connected with being connected to of screw head is non-dismountable, so after twisting off, 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 stretches into for the screw-driver head on the screw head surface, and be not easy to dismounting and installation, so the screw of the prior art can only cause the very big waste of resource with once usually.
The model utility content
For this reason, technical problem to be solved in the utility model is that screw of the prior art is non-dismountable the connection with twisting off between the thing, and cause screw from causing the waste problem of resource, to provide a kind of screw that being connected to of thing and screw head removably connects that twists off with once.
For solving the problems of the technologies described above, a kind of dismountable anti-screw of turning round of the present utility model, comprise screw head, form externally threaded screw afterbody, and be arranged on described screw head the upper-end surface twist off thing, form cross recess or straight groove on the described upper-end surface that twists off thing, and to twist off the moment of torsion that thing twists off from described screw head suitable with the moment of torsion of tightening described screw just with described, the female attachment hole of upper-end surface moulding of described screw head, the described outside thread that forms on thing and the end that described screw head is connected with described screw-internal thread fit that twists off.
Described dismountable anti-screw of turning round, the described thing that twists off is by cylindrical head, the cylindrical midsection branch, and cylindrical tail portion constitutes, wherein, the diameter minimum that described cylindrical midsection is divided, and described outside thread is molded on the described cylindrical tail portion, and described cross recess or straight groove are molded over the upper-end surface of described cylindrical head.
Describedly dismountablely anti-turned round screw, and also formed on the upper-end surface of described screw head and be fit to the groove that the screw-driver head stretches into.
Technique scheme of the present utility model has the following advantages compared to existing technology, 1, in the utility model, 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, the residual thing that twists off partly can be dismantled, be refilled one again and newly twist off thing, make this screw to use repeatedly.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is dismountable anti-plan view of turning round screw of the present utility model;
Fig. 2 is dismountable anti-plan view of turning round the embodiment 1 of screw of the present utility model;
Fig. 3 is dismountable anti-plan view of turning round the embodiment 2 of screw of the present utility model.
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-cylindrical midsection branch.
Embodiment
As shown in Figure 1 to Figure 3,1 one kinds of dismountable anti-screws of turning round of present embodiment, comprise screw head 1, form externally threaded screw afterbody 2, and be arranged on described screw head 1 the upper-end surface twist off thing, form cross recess 5 or straight groove 6 on the described upper-end surface that twists off thing, and to twist off the moment of torsion that thing twists off from described screw head 1 suitable with the moment of torsion of tightening described screw just with described, the female attachment hole 7 of the upper-end surface moulding of described screw head 1, the described outside thread that forms on thing and the end that described screw head 1 is connected with described screw-internal thread fit that twists off.The female attachment hole 7 of moulding be molded over described externally threaded cooperation that twists off on the thing, make after twisting off thing and twisting off, the residual thing that twists off partly can be dismantled, again refill one and newly twist off thing, make this screw to use repeatedly, in the present embodiment, the described thing that twists off is by cylindrical head 3, cylindrical midsection divides 8, and cylindrical tail portion 4 constitutes, wherein, described cylindrical midsection is divided 8 diameter minimum, guarantees to twist off to occur in described cylindrical midsection and divide 8, is convenient to the follow-up dismounting that twists off the thing residual fraction like this, and described outside thread is molded on the described cylindrical tail portion 4, and described cross recess 5 or straight groove 6 are molded over the upper-end surface of described cylindrical head 3.Also form on the upper-end surface of described screw head 1 and be fit to the groove that the screw-driver head stretches into.
Obviously, the foregoing description only is for example clearly is described, is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.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 utility model creation.
Claims (3)
1. dismountable anti-screw of turning round, comprise screw head (1), form externally threaded screw afterbody (2), and be arranged on described screw head (1) the upper-end surface twist off thing, form cross recess (5) or straight groove (6) on the described upper-end surface that twists off thing, and to twist off the moment of torsion that thing twists off from described screw head (1) suitable with the moment of torsion of tightening described screw just with described, it is characterized in that: the female attachment hole of upper-end surface moulding (7) of described screw head (1), the described outside thread that forms on thing and the end that described screw head (1) is connected with described screw-internal thread fit that twists off.
2. dismountable anti-screw of turning round according to claim 1, it is characterized in that: the described thing that twists off is by cylindrical head (3), cylindrical midsection branch (8), and cylindrical tail portion (4) constitutes, wherein, the diameter minimum of described cylindrical midsection branch (8), and described outside thread is molded on the described cylindrical tail portion (4), and described cross recess (5) or straight groove (6) are molded over the upper-end surface of described cylindrical head (3).
3. according to claim 1 and 2ly dismountablely anti-turned round screw, it is characterized in that: also form on the upper-end surface of described screw head (1) and be fit to the groove that the screw-driver head stretches into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201078575U CN202001463U (en) | 2011-04-13 | 2011-04-13 | Detachable overtwist-preventing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201078575U CN202001463U (en) | 2011-04-13 | 2011-04-13 | Detachable overtwist-preventing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001463U true CN202001463U (en) | 2011-10-05 |
Family
ID=44704206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201078575U Expired - Fee Related CN202001463U (en) | 2011-04-13 | 2011-04-13 | Detachable overtwist-preventing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162485A (en) * | 2011-04-13 | 2011-08-24 | 陈文才 | Anti-twisting screw |
-
2011
- 2011-04-13 CN CN2011201078575U patent/CN202001463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162485A (en) * | 2011-04-13 | 2011-08-24 | 陈文才 | Anti-twisting screw |
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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: 20111005 Termination date: 20130413 |