CN203051368U - Square-head bolt - Google Patents
Square-head bolt Download PDFInfo
- Publication number
- CN203051368U CN203051368U CN 201320078868 CN201320078868U CN203051368U CN 203051368 U CN203051368 U CN 203051368U CN 201320078868 CN201320078868 CN 201320078868 CN 201320078868 U CN201320078868 U CN 201320078868U CN 203051368 U CN203051368 U CN 203051368U
- Authority
- CN
- China
- Prior art keywords
- bolt
- head
- square
- flank
- tooth
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a square-head bolt. The square-head bolt comprises a bolt body and a bolt head which is connected to the end part of the bolt body, wherein the bolt head is of a square shape, the side wall of the bolt body is provided with external threads, and the end part at the other end of the bolt body is circumferentially and uniformly distributed with saw teeth. According to the square-head bolt provided by the utility model, the square-head bolt can be easily wrenched and screwed as the bolt head is of the square shape, slipping cannot be caused during wrenching and screwing, and thus the fastening effect is better; and the end part of the bolt is provided with the saw teeth which can prevent inverse screwing of the bolt, friction can be increased by the saw teeth, the bolt can be prevented from loosening when the end part is under stress, and thus the safety performance of the square-head bolt is increased.
Description
Technical field
The utility model relates to a kind of bolt, particularly a kind of square head bolt.
Background technique
Bolt belongs to fastening piece, has bolt in each field substantially.Bolt is made up of threaded body and head.When traditional bolt is under pressure in the end, cause easily loosening, thereby cause fastening or connect to lose efficacy.And most of bolt heads are hexagon, when the spanner bore is a bit larger tham hexagon head, are difficult for twisting, can skid when twisting, and it is very inconvenient to operate.
The model utility content
(1) technical problem that will solve
It is convenient that the technical problems to be solved in the utility model provides a kind of twisting, and be difficult for loosening square head bolt when being under pressure in the end.
(2) technological scheme
For solving the problems of the technologies described above, the utility model provides a kind of square head bolt, comprise bolt body 1, and be connected the bolt head 2 of described bolt body 1 end, described bolt head 2 is square, described bolt body 1 sidewall offers outside thread, and described bolt body 1 the other end end circumferentially is evenly equipped with sawtooth 3.
Further, described bolt body 1 end is provided with polished rod 11, and the diameter of described polished rod 11 is less than the diameter of described bolt body 1, and described sawtooth 3 is located at described polished rod 11 ends.
Further, described polished rod 11 end edge chamferings, described sawtooth 3 circumferentially is distributed on the described chamfering.
Further, described chamfering is more than or equal to 45 degree and smaller or equal to 50 degree.
Further, described sawtooth 3 is intersected by first flank of tooth 31 and second flank of tooth and forms, angle between described first flank of tooth 31 and described bolt body 1 axis is less than the angle between the axis of described second flank of tooth 32 and described bolt body 1, and described second flank of tooth 32 is towards the tightening direction of described square head bolt.
Further, first flank of tooth 31 of described sawtooth 3 is parallel to the axis of described bolt body 1.
Further, described bolt head 2 end faces are arc.
(3) beneficial effect
The utility model square head bolt, head is square, and twisting can not cause when twisting and skid easily, makes fastening better effects if; The bolt end is provided with the sawtooth that can prevent that bolt from fall twisting, and this sawtooth can increase friction, prevents from becoming flexible when stressed in the end, thereby has improved its Safety performance.
Description of drawings
Fig. 1 is the structural representation of the utility model square head bolt;
Fig. 2 is the right elevation of the utility model square head bolt;
Fig. 3 launches enlarged view for A among Fig. 2 to sawtooth.
Embodiment
Consult Fig. 1 ~ Fig. 3, the utility model provides a kind of square head bolt, comprise bolt body 1, and be connected the bolt head 2 of bolt body 1 end, bolt head 2 is square, bolt head 2 end faces are arc, and bolt body 1 sidewall offers outside thread, and bolt body 1 the other end end circumferentially is evenly equipped with the sawtooth 3 that can prevent its reverse.
In the present embodiment, bolt body 1 end is provided with polished rod 11, the diameter of this polished rod 11 is less than the diameter of bolt body 1, polished rod 11 end edge chamferings, sawtooth 3 circumferentially is distributed on this chamfering, for the ease of processing and skidproof effect preferably being arranged, this chamfering is more than or equal to 45 degree and smaller or equal to 50 degree, and preferably 48 spend; This sawtooth 3 is intersected by first flank of tooth 31 and second flank of tooth and forms, angle between first flank of tooth 31 and bolt body 1 axis is far smaller than the angle between the axis of second flank of tooth 32 and bolt body 1, preferably, first flank of tooth 31 is parallel to the axis of bolt body 1, and this second flank of tooth 32 is towards the tightening direction of square head bolt.
The utility model square head bolt, head is square, and twisting can not cause when twisting and skid easily, makes fastening better effects if; The bolt end is provided with the sawtooth that can prevent that bolt from fall twisting, and this sawtooth can increase friction, prevents from becoming flexible when stressed in the end, thereby has improved its Safety performance.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. square head bolt, it is characterized in that: comprise bolt body (1), and be connected the bolt head (2) of described bolt body (1) end, described bolt head (2) is square, described bolt body (1) sidewall offers outside thread, and described bolt body (1) the other end end circumferentially is evenly equipped with sawtooth (3).
2. square head bolt as claimed in claim 1, it is characterized in that: described bolt body (1) end is provided with polished rod (11), the diameter of described polished rod (11) is less than the diameter of described bolt body (1), and described sawtooth (3) is located at described polished rod (11) end.
3. square head bolt as claimed in claim 2, it is characterized in that: described polished rod (11) end edge chamfering, described sawtooth (3) circumferentially is distributed on the described chamfering.
4. square head bolt as claimed in claim 3 is characterized in that: described chamfering is more than or equal to 45 degree and smaller or equal to 50 degree.
5. square head bolt as claimed in claim 1, it is characterized in that: described sawtooth (3) is intersected by first flank of tooth (31) and second flank of tooth and forms, angle between described first flank of tooth (31) and described bolt body (1) axis is less than the angle between the axis of described second flank of tooth (32) and described bolt body (1), and described second flank of tooth (32) is towards the tightening direction of described square head bolt.
6. square head bolt as claimed in claim 5, it is characterized in that: first flank of tooth (31) of described sawtooth (3) is parallel to the axis of described bolt body (1).
7. square head bolt as claimed in claim 1, it is characterized in that: described bolt head (2) end face is arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320078868 CN203051368U (en) | 2013-02-20 | 2013-02-20 | Square-head bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320078868 CN203051368U (en) | 2013-02-20 | 2013-02-20 | Square-head bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051368U true CN203051368U (en) | 2013-07-10 |
Family
ID=48734326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320078868 Expired - Lifetime CN203051368U (en) | 2013-02-20 | 2013-02-20 | Square-head bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982508A (en) * | 2014-04-16 | 2014-08-13 | 国家电网公司 | Antiskid anti-theft screw |
-
2013
- 2013-02-20 CN CN 201320078868 patent/CN203051368U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982508A (en) * | 2014-04-16 | 2014-08-13 | 国家电网公司 | Antiskid anti-theft screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |