CN201963680U - Over-screwing prevention screw - Google Patents
Over-screwing prevention screw Download PDFInfo
- Publication number
- CN201963680U CN201963680U CN2011201078768U CN201120107876U CN201963680U CN 201963680 U CN201963680 U CN 201963680U CN 2011201078768 U CN2011201078768 U CN 2011201078768U CN 201120107876 U CN201120107876 U CN 201120107876U CN 201963680 U CN201963680 U CN 201963680U
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- screw
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- twist
- thing
- end surface
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Abstract
The utility model relates to an over-screwing prevention screw, which comprises a screw head part (1), a screw tail part (2) with formed external threads, wherein a twist-off object is arranged on the screw head part (1); a cross groove (5) or a straight-line shaped groove (6) is formed on an upper end surface of the twist-off object; and the torque for twisting off the twist-off object from the screw head part (1) is exactly the same as the torque for tightening the screw. The screw is characterized in that a straight-line shaped groove (7) is formed on the upper end surface of the screw head part (1); and the twist-off object is arranged in the groove (7). Through the adoption of the over-screwing prevention screw, the remaining part is left in the groove after the twist-off object is twisted off, thereby avoiding scratches on the human body.
Description
Technical field
The utility model relates to a kind of anti-screw of turning round.
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 have following shortcoming in actual use: 1, twist off on the upper-end surface that thing is arranged on screw head, after twisting off, a part that twists off thing can remain on the upper-end surface of screw head, has so both influenced attractive in appearancely, may cause scratch to human body again.
The model utility content
For this reason, technical problem to be solved in the utility model is that the anti-screw of turning round of the prior art can a residual part after twisting off thing and twisting off causes influencing attractive in appearance in the upper-end surface of screw, may cause the problem of scratch again to human body, provide a kind of nubbin that twists off thing can not cause the anti-screw of turning round of scratch human body.
For solving the problems of the technologies described above, a kind of anti-screw of turning round of the present utility model, comprise screw head, and form externally threaded screw afterbody, also be provided with one on the described screw head and 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, form a groove on the upper-end surface of described screw head, the described thing that twists off is arranged in the described groove, and the length of described cylindrical tail portion is not more than the degree of depth of described groove.
The described anti-screw of turning round, describedly twist off the cylindrical head that thing is successively decreased successively by diameter, the cylindrical midsection branch, and cylindrical tail portion constitutes, described cross recess or straight groove are molded over the upper-end surface of described cylindrical head, described cylindrical tail portion is installed in the described groove, and the length of described cylindrical tail portion is not more than the degree of depth of described groove.
Technique scheme of the present utility model has the following advantages compared to existing technology, 1, in the utility model, form a groove on the upper-end surface of screw head, twisting off thing is arranged in the groove, can make the residual fraction that twists off thing remain in the groove, and can not protrude the upper-end surface scratch human body of screw head or tangle clothing; Twist off thing and successively decrease successively to the diameter of afterbody from the head, can guarantee to twist off and occur in cylindrical tail portion, the length of cylindrical tail portion is not more than the degree of depth of groove, guarantees to twist off the part that remains in after thing twists off in the groove and does not stretch out in the groove, hurts sb.'s feelings thereby avoid scraping.
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 an anti-plan view of turning round screw of the present utility model;
Fig. 2 is an anti-plan view of turning round the embodiment 1 of screw of the present utility model;
Fig. 3 is an 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-groove, 8-cylindrical midsection branch.
Embodiment
As shown in Figure 1 to Figure 3, a kind of anti-screw of turning round of present embodiment 1, comprise screw head 1, and form externally threaded screw afterbody 2, also be provided with one on the described screw head 1 and 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 thing suitable with the moment of torsion of tightening described screw just from the moment of torsion that described screw head 1 twists off with described, form a groove 7 on the upper-end surface of described screw head 1, the described thing that twists off is arranged in the described groove 7.The setting of described groove 7 can make the described residual fraction that twists off thing remain in the described groove 7, and can not protrude the upper-end surface scratch human body of described screw head 1 or tangle clothing, in the present embodiment, describedly twist off the cylindrical head 3 that thing is successively decreased successively by diameter, cylindrical midsection divides 8, and cylindrical tail portion 4 constitutes, described cross recess 5 or straight groove 6 are molded over the upper-end surface of described cylindrical head 3, described cylindrical tail portion 4 is installed in the described groove 7, and the length of described cylindrical tail portion 4 is not more than the degree of depth of described groove 7.The described thing that twists off successively decreases successively to the diameter of afterbody from the head, can guarantee to twist off and occur in described cylindrical tail portion 4, the length of described cylindrical tail portion 4 is not more than the degree of depth of described groove 7, guarantee that the described parts that remain in after thing twists off in the described groove 7 that twist off do not stretch out in the groove, hurt sb.'s feelings thereby avoid scraping.
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 (2)
1. prevent turning round screw for one kind, comprise screw head (1), and form externally threaded screw afterbody (2), also be provided with one on the described screw head (1) and 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: form a groove (7) on the upper-end surface of described screw head (1), the described thing that twists off is arranged in the described groove (7).
2. the anti-screw of turning round according to claim 1, it is characterized in that: describedly twist off the cylindrical head (3) that thing is successively decreased successively by diameter, cylindrical midsection branch (8), and cylindrical tail portion (4) constitutes, described cross recess (5) or straight groove (6) are molded over the upper-end surface of described cylindrical head (3), described cylindrical tail portion (4) is installed in the described groove (7), and the length of described cylindrical tail portion (4) is not more than the degree of depth of described groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201078768U CN201963680U (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201078768U CN201963680U (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963680U true CN201963680U (en) | 2011-09-07 |
Family
ID=44526215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201078768U Expired - Fee Related CN201963680U (en) | 2011-04-13 | 2011-04-13 | Over-screwing prevention screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168708A (en) * | 2011-04-13 | 2011-08-31 | 陈文才 | Screw |
| CN110062604A (en) * | 2016-10-10 | 2019-07-26 | 西特尼斯Ag | Screwdriver with integrated torque protection |
-
2011
- 2011-04-13 CN CN2011201078768U patent/CN201963680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168708A (en) * | 2011-04-13 | 2011-08-31 | 陈文才 | Screw |
| CN110062604A (en) * | 2016-10-10 | 2019-07-26 | 西特尼斯Ag | Screwdriver with integrated torque protection |
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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: 20110907 Termination date: 20130413 |