CN203548520U - Fast-tapping and loosening-prevention stud - Google Patents
Fast-tapping and loosening-prevention stud Download PDFInfo
- Publication number
- CN203548520U CN203548520U CN201320739090.7U CN201320739090U CN203548520U CN 203548520 U CN203548520 U CN 203548520U CN 201320739090 U CN201320739090 U CN 201320739090U CN 203548520 U CN203548520 U CN 203548520U
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- CN
- China
- Prior art keywords
- stud
- thread
- diameter
- loosening
- tapping
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- 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 - Fee Related
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Abstract
The utility model discloses a fast-tapping and loosening-prevention stud. The fast-tapping and loosening-prevention stud comprises a stud rod body, wherein a circle of round separation piece is arranged in the middle of the stud rod body, outer threads in the opposite directions are arranged on the stud rod body at two sides of the separation piece, the thread at one side is high-and-low tooth outer thread, the stud rod body at the other side of the separation piece extends outwards to form a quincunx head part coaxial with a stud body, the diameter of the quincunx head part is smaller than or equal to the inner diameter of the outer thread, and the diameter of the separation piece is larger than the outer diameter of the outer thread. Through the design of the separation piece, parts fixed to the two ends of the stud can be separated and are prevented from influencing each other in the use process. Through the design of the high-and-low tooth outer thread at one end, the tapping speed is increased, the contact area is increased, the bonding force is improved, and the fast-tapping and loosening-prevention stud is firmly fixed and does not fall off easily. One end of the fast-tapping and loosening-prevention stud extends to be the quincunx head part, the problem that the stud is screwed in and penetrates through the parts is resolved, and the stud can be screwed up with high enough screwing force.
Description
Technical field
The utility model relates to a kind of bolt, is specially a kind of quick attack, anti-loosening stud bolt, belongs to five metals manufacturing technology field.
Background technique
Bolt, is one of modal mechanical parts, the cylindrical threaded fastening piece of adapted nut.Bolt: by head and screw rod (with an externally threaded cylindrical body) class fastening piece dimerous, need coordinate with nut, for being fastenedly connected two with the part of through hole.This Connecting format claims bolt to connect.As nut is screwed off from bolt, can make again these two parts separately, therefore bolt connects, be to belong to removably connect.
By the force way connecting, divide: minute common and have articulation hole to use.By nose shape, divide: there is hexagon head, round end, square spigot, countersunk head etc.Wherein hexagon head is the most frequently used.General countersunk head is used in the place that requires connection.
Stud bolt (Stud), is also double-threaded screw.For connecting mechanical fixed-link function, there is screw thread at stud bolt two, middle screw rod, have thick also have thin.Stud bolt is generally applied to: 1, being used in main body is main equipment, needs installation accessories, such as visor, mechanical sealing base, deceleration frame etc.At this moment just use stud bolt, one end is screwed into main body, installs the other end band upper cap nut after annex, and because annex is often dismounting, screw thread can wear and tear or damage, uses the stud bolt meeting of replacing very convenient.2, very large for connecting body thickness, when bolt length is very long, can use stud bolt.The place of 3, using hex head bolt to be connected for connecting slab with inconvenience, as concrete roof truss, roof girder overhead monorail beam suspender etc.But there is following defect in this bolt:
1, common stud bolt does not have head, is not easy to tighten, and when connecting two parts, when second parts is not easy to rotate again, is difficult to second parts to tighten;
2, common stud bolt, when tightening, because screw thread is thinner, is shot speed slower, spend the longer time, and tightens and easily come off afterwards;
3, between two parts, can not abut against together, need to separate a segment distance, common bolt cannot be realized.
Model utility content
The purpose of this utility model is for a kind of quick attack, anti-loosening stud bolt are provided, to solve the problems referred to above of prior art.
The purpose of this utility model is achieved through the following technical solutions.
Quick attack, an anti-loosening stud bolt, comprise screw rod main body, is provided with the circular partition of a circle in the centre of screw rod main body, is provided with the relative outside thread of direction on the screw rod of partition both sides, and wherein a side be tooth outside thread just; The opposite side screw rod main body of partition extends to form a plum blossom head coaxial with bolt body outward, and described plum blossom head diameter is less than or equal to core diameter; The diameter of described partition is greater than major diameter of external thread.
Described externally threaded tooth form is one or both in V thread screw, square threaded form, trapezoidal thread and buttress thread form.
The core diameter of described partition both sides is different, is wherein that the externally threaded side internal diameter of height tooth is less.
Footpath outside described in the utility model (large footpath) refers to and the imaginary cylinder diameter coinciding at the bottom of outside thread crest or internal thread tooth, and the nominal diameter of screw thread is large footpath; And the diameter of plum blossom head circumscribed cylinder body.Internal diameter (path) refers to at the bottom of outside thread tooth or the imaginary cylinder diameter that coincides of internal thread crest.
The utlity model has following beneficial effect:
1, by the design of partition, the fixing parts at stud bolt two ends can be separated, prevent from use interacting;
2, the outside thread that is height tooth by one end designs, and is provided with high screw thread, low thread double-start thread on screw rod, and a low height is arranged in order, and this structure has improved the speed of shooting, and increases area of contact, has strengthened combination force degree, fixed, difficult drop-off;
3, one end of stud bolt extends to the head of plum blossom head dummy, has both solved the problem that bolt screwed in and passed parts, can have again enough strong torsion to tight a bolt.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is side-looking structural representation of the present utility model;
In figure: 1, screw rod main body 2, height tooth outside thread 3, plum blossom head 4, partition.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, further set forth structural feature of the present utility model.
As shown in Figure 1, Figure 2 and Figure 3, quick attack, an anti-loosening stud bolt, comprise screw rod main body 1, is provided with the circular partition 4 of a circle in the centre of screw rod main body 1, on partition 4 both sides screw rods, be provided with the relative outside thread of direction, wherein a side is height tooth outside thread 2; The opposite side screw rod main body 1 of partition 4 extends to form a plum blossom head 3 coaxial with bolt body 1 outward, and described plum blossom head 3 diameters are less than or equal to core diameter; The diameter of described partition 4 is greater than major diameter of external thread.
Described externally threaded tooth form is one or both in V thread screw, square threaded form, trapezoidal thread and buttress thread form.
The core diameter of described partition 4 both sides is different, is wherein that a side internal diameter of height tooth outside thread 3 is less.
Claims (3)
1. quick attack, an anti-loosening stud bolt, comprise screw rod main body, it is characterized in that: in the centre of screw rod main body, be provided with the circular partition of a circle, be provided with the relative outside thread of direction on the screw rod of partition both sides, wherein a side be tooth outside thread just; The opposite side screw rod main body of partition extends to form a plum blossom head coaxial with bolt body outward, and described plum blossom head diameter is less than or equal to core diameter; The diameter of described partition is greater than major diameter of external thread.
2. a kind of quick attack according to claim 1, anti-loosening stud bolt, is characterized in that: described externally threaded tooth form is one or both in V thread screw, square threaded form, trapezoidal thread and buttress thread form.
3. a kind of quick attack according to claim 1, anti-loosening stud bolt, is characterized in that: the core diameter of described partition both sides is different, be wherein that just the externally threaded side internal diameter of tooth is less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739090.7U CN203548520U (en) | 2013-11-20 | 2013-11-20 | Fast-tapping and loosening-prevention stud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739090.7U CN203548520U (en) | 2013-11-20 | 2013-11-20 | Fast-tapping and loosening-prevention stud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548520U true CN203548520U (en) | 2014-04-16 |
Family
ID=50466643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739090.7U Expired - Fee Related CN203548520U (en) | 2013-11-20 | 2013-11-20 | Fast-tapping and loosening-prevention stud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477069A (en) * | 2017-07-31 | 2017-12-15 | 太仓市众翔精密五金有限公司 | A kind of wear-resisting stud for exempting from driver |
| CN110678685A (en) * | 2017-05-25 | 2020-01-10 | 日本制铁株式会社 | Threaded joint for steel pipe |
-
2013
- 2013-11-20 CN CN201320739090.7U patent/CN203548520U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110678685A (en) * | 2017-05-25 | 2020-01-10 | 日本制铁株式会社 | Threaded joint for steel pipe |
| CN107477069A (en) * | 2017-07-31 | 2017-12-15 | 太仓市众翔精密五金有限公司 | A kind of wear-resisting stud for exempting from driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model |