CN201851459U - External-pentagonal internal-quadrangular bolt - Google Patents
External-pentagonal internal-quadrangular bolt Download PDFInfo
- Publication number
- CN201851459U CN201851459U CN2010205911291U CN201020591129U CN201851459U CN 201851459 U CN201851459 U CN 201851459U CN 2010205911291 U CN2010205911291 U CN 2010205911291U CN 201020591129 U CN201020591129 U CN 201020591129U CN 201851459 U CN201851459 U CN 201851459U
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- Prior art keywords
- bolt
- external
- jiaos
- quadrangular
- bolt head
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- Expired - Fee Related
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Abstract
The utility model relates to an external-pentagonal internal-quadrangular bolt, which comprise a bolt head (2) and a bolt neck (3) connected with the bolt head (2). Bolt thread (4) is arranged at the lower end of the bolt neck (3), the bolt head (2) is in external pentagonal shape, and a quadrangular groove (1) is arranged at the center of the end face of the bolt head (2). The external-pentagonal internal-quadrangular bolt can be mounted and dismounted by a special tool, the external-pentagonal internal-quadrangular shape of the bolt head is utilized sufficiently, so that the service effect of the bolt is improved greatly and the probability of chamfering due to abrasion is reduced to zero.
Description
Technical field
The utility model relates to fastener areas, particularly relates to five jiaos of interior shape four horn shape bolts of a kind of profile.
Background technique
In traditional mechanized equipment industry, the big and small bolt in the fastening piece is the most common, most common standard part, outer-hexagonal bolt particularly, and use amount is very big, and using scope is also wide especially.But in today that mechanized equipment makes rapid progress, often the General fasteners bolt can not satisfy the needs of present many occasions, and especially in some more special equipment occasions, the effect of General fasteners bolt is very limited especially.Particularly common outer-hexagonal bolt, by common spanner, after dismounting repeatedly, its outer-hexagonal can be worn with comparalive ease, thereby makes hex head bolt become the fillet bolt, and the fillet bolt has just lost the effect of fastening piece at all.In order to change this awkward situation, five corner bolts outside common the employing, but outer five corner bolts equally also can become the fillet bolt through repeatedly dismantling, thus make bolt scrap, some equipment configurations can't be mounted and dismounted, bring great inconvenience to actual production work; Sometimes will destroy could solving the production practical problem after bolt or the device structure even, it is very big inconvenient and waste to bring to the user.
Summary of the invention
Technical problem to be solved in the utility model provides five jiaos of interior shape four horn shape bolts of a kind of profile, makes bolt can reach maximum using effect.
The technological scheme that its technical problem that solves the utility model adopts is: provide a kind of profile five jiaos of interior shape four horn shape bolts, comprise bolt head, the bolt neck that links to each other with described bolt head; It is outer five-cornuted that described bolt neck subordinate end has bolt thread, described bolt head, and there is tetragonal groove at its end face center.
Described tetragonal groove is positive tetragonal groove.
Beneficial effect
Owing to adopted above-mentioned technological scheme, the utility model compared with prior art, have following advantage and good effect: the utility model makes full use of five jiaos of interior shape four horn shapes of profile of bolt head, thereby the using effect of bolt is increased greatly, instrument by special use mounts and dismounts the utility model, and the outer five jiaos of probability that are worn down to fillet of bolt are reduced to zero.
Description of drawings
Fig. 1 is an end view drawing of the present utility model;
Fig. 2 is an outline drawing of the present utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As depicted in figs. 1 and 2, five jiaos of interior shape four horn shape bolts of a kind of profile comprise bolt head 2, the bolt neck 3 that links to each other with described bolt head 2; There is bolt thread 4 described bolt neck 3 lower ends, and described bolt head 2 is outer five-cornuted, and there is tetragonal groove 1 at its end face center.Wherein, tetragonal groove 1 is positive tetragonal groove.
This bolt in use, because can not use common wrench, sleeve to reach the effect of original standard piece bolt, and can only use under the condition of special tool, make the fastening of special bolts and unclamp to be subjected to its Wai Wujiao and interior four jiaos conditioning each other and just should not to skid.At some in particular cases, if there is not special tool dismounting effect to be affected.In addition, because be that Wai Wujiao can not dismantle with common spanner wrench, do not cause fillet so can not be worn easily yet, when using special tool, can dismantle at leisure and fastening this bolt with the outer five jiaos of combined sleeves in interior four jiaos of location, the inner ring on this sleeve top is five jiaos of plum blossom shapes, and the center is tetragonal column structure.This bolt can also be dismantled with several method, comprising: special sleeve (five jiaos) spanner, interior four jiaos of spanners and outer five jiaos of sleeves and interior four jiaos of combination wrenches etc., can both dismantle this bolt effectively, make bolt reach maximum using effect, thereby make it in the special maximum effect of occasion performance.
Be not difficult to find, the utility model makes full use of five jiaos of interior shape four horn shapes of profile of bolt head, thereby the using effect of bolt is increased greatly, by special tool the utility model is mounted and dismounted, the outer five jiaos of probability that are worn down to fillet of bolt are reduced to zero.
Claims (2)
1. five jiaos of interior shape four horn shape bolts of a profile comprise bolt head (2), the bolt neck (3) that links to each other with described bolt head (2); There is bolt thread (4) described bolt neck (3) lower end, it is characterized in that, described bolt head (2) is outer five-cornuted, and there is tetragonal groove (1) at its end face center.
2. five jiaos of interior shape four horn shape bolts of profile according to claim 1 is characterized in that described tetragonal groove (1) is positive tetragonal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205911291U CN201851459U (en) | 2010-11-04 | 2010-11-04 | External-pentagonal internal-quadrangular bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205911291U CN201851459U (en) | 2010-11-04 | 2010-11-04 | External-pentagonal internal-quadrangular bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851459U true CN201851459U (en) | 2011-06-01 |
Family
ID=44093851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205911291U Expired - Fee Related CN201851459U (en) | 2010-11-04 | 2010-11-04 | External-pentagonal internal-quadrangular bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007849A (en) * | 2012-12-17 | 2015-10-28 | 德普伊(爱尔兰)有限公司 | Twist-drivable pin assembly |
-
2010
- 2010-11-04 CN CN2010205911291U patent/CN201851459U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007849A (en) * | 2012-12-17 | 2015-10-28 | 德普伊(爱尔兰)有限公司 | Twist-drivable pin assembly |
| US11071574B2 (en) | 2012-12-17 | 2021-07-27 | Depuy Ireland Unlimited Company | Twist-drivable pin assembly |
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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: 20110601 Termination date: 20131104 |