CN201377499Y - Structure preventing bolt from irregular breaking when force applied exceeds specified value - Google Patents
Structure preventing bolt from irregular breaking when force applied exceeds specified value Download PDFInfo
- Publication number
- CN201377499Y CN201377499Y CN200920302493U CN200920302493U CN201377499Y CN 201377499 Y CN201377499 Y CN 201377499Y CN 200920302493 U CN200920302493 U CN 200920302493U CN 200920302493 U CN200920302493 U CN 200920302493U CN 201377499 Y CN201377499 Y CN 201377499Y
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- bolt
- groove
- transition
- stress value
- specified value
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Abstract
The utility model discloses a structure preventing a bolt from irregular breaking when force applied exceeds a specified value, which comprises the bolt (1) provided with threads (4); a groove (3) is arranged around the rod part of the bolt (1); two sides of the groove (3) are provided with a transitional column (5) which is respectively transitionally connected with the adjacent threads (4) or a screw column by a transitional circular arc (2). The structure can not only ensure that connected two parts can freely separate without damaging other parts when breaking happens, but also have the advantages of simple structure, easy application, reliable and safe effect and the like. The structure can be promoted and applied to various mechanical industries and have quite good economic benefit and social benefit.
Description
Technical field
The utility model relates to a kind of structure that prevents bolt random fracture when exceeding specified stress value, belongs to the bolt manufacture technology field.
Background technique
Since mechanical industry was come out, bolt had just produced, and bolt is with a long history, has become a kind of fastening piece of extensive utilization, was extensive use of invariably as railway, bridge, electric power, mine, aircraft, tank, automobile and other industries.But present bolt of the prior art can only play fastening effect, these bolts in use, when bolt stressed meets or exceeds the power value scope of regulation, bolt will rupture, and the position of bolt fracture is random at random, and this crack conditions tends to cause destroys and can not repair being produced by bolted two-part body; Particularly in some particular application, requirement is when bolt fracture, must freely be thrown off by bolted two-part body, so that other position is not destroyed, but, can not guarantee reliably that therefore connected two-part body can freely be thrown off when bolt fracture because the position of these bolt fractures of the prior art is random at random.So bolt of the prior art in use, its using effect still is not ideal enough, still can not satisfy the needs of use.
The model utility content
The purpose of this utility model is: provide a kind of simple in structure, make easily, and can prevent the structure of bolt random fracture when exceeding specified stress value, to overcome the deficiencies in the prior art.
The utility model is achieved in that and comprises the bolt that is provided with screw thread, is provided with a circle groove in the bar portion of bolt, is provided with the transition cylinder on the both sides of groove, and the transition cylinder connects by screw thread or the transition of screw rod cylindrical section that transition arc is adjacent respectively.
The groover rot diameter of above-mentioned groove is less than the diameter at other cylinder position of bolt and the core diameter of thread of screw thread.
The groove sectional shape of above-mentioned groove is the shape of the circular arc smooth transition of U font, and the groove surfaces roughness of groove is not more than 1.6 μ m.
Owing to adopted technique scheme, the utility model is by carrying out machining to its bar portion on the basis of plain bolt, make bolt shank form transition cylinder and groove, must can rupture at the groove of design when reaching the power value scope of regulation thereby this bolt is had when bolt strained, thereby avoid the random situation generation in bolt of the prior art bolt fracture position when exceeding specified stress value.Compared with prior art, can freely throw off the advantage that other position is not destroyed, but also have advantage such as simple in structure, easy to implement, safety reliable for effect thereby the utility model not only has two-part body that makes connection in the time of guaranteeing fracture takes place.The utility model can be popularized and applied in the various mechanical industries, has good economic benefits and social benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Embodiment of the present utility model: for the situation that prevents bolt random fracture when the exceeding specified stress value takes place, when making bolt, on the screw rod of bolt, make a circle groove in advance, the maximum weighted value that makes this groove is the maximum weighted value of regulation bolt, and the stress value of the other parts of bolt all is made into maximum weighted value greater than regulation, bolt is ruptured at the groove that sets in advance when surpassing the stress value of regulation, thereby reach the purpose that prevents bolt random fracture when exceeding specified stress value.During concrete the making, can adopt a kind of structure that prevents bolt random fracture when exceeding specified stress value of the present utility model, structure of the present utility model be common be threaded to improve on 4 bolt 1 basis form, as shown in Figure 1, during making, in the bar portion of bolt 1, produce a circle groove 3 by the mode of machining, groove 3 can be determined according to usage requirement at the particular location of bolt 1 bar portion, the groover rot diameter of groove 3 is made into less than the diameter at bolt 1 other cylinder position and the core diameter of thread of screw thread 4, and to make the maximum strength value at groove 3 places be the required design power value of bearing of bolt; The groove sectional shape of groove 3 is made into the shape of the circular arc smooth transition of U font, and the groove surfaces roughness that makes groove 3 is not more than 1.6 μ m, two-part body that connects can guarantee that like this groove 3 can reliably rupture when the stress value situation of being stipulated, so that can freely be thrown off; On bolt 1, produce transition cylinder 5 then on the both sides of groove 3, and screw thread 4 or the transition of screw rod cylindrical section part that transition cylinder 5 is adjacent by transition arc 2 respectively connected, bolt 1 is had when stressed can reliably the fracture at groove 3 places when reaching the power value scope of regulation and the function that other position is not destroyed.
Claims (3)
1. structure that prevents bolt random fracture when exceeding specified stress value, comprise the bolt (1) that is provided with screw thread (4), it is characterized in that: in the bar portion of bolt (1), be provided with a circle groove (3), be provided with transition cylinder (5) on the both sides of groove (3), transition cylinder (5) connects by screw thread (4) or the transition of screw rod cylindrical section that transition arc (2) is adjacent respectively.
2. the structure that prevents bolt random fracture when exceeding specified stress value according to claim 1 is characterized in that: the groover rot diameter of groove (3) is less than the diameter at other cylinder position of bolt (1) and the core diameter of thread of screw thread (4).
3. the structure that prevents bolt random fracture when exceeding specified stress value according to claim 1 and 2, it is characterized in that: the groove sectional shape of groove (3) is the shape of the circular arc smooth transition of U font, and the groove surfaces roughness of groove (3) is not more than 1.6 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920302493U CN201377499Y (en) | 2009-04-23 | 2009-04-23 | Structure preventing bolt from irregular breaking when force applied exceeds specified value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920302493U CN201377499Y (en) | 2009-04-23 | 2009-04-23 | Structure preventing bolt from irregular breaking when force applied exceeds specified value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377499Y true CN201377499Y (en) | 2010-01-06 |
Family
ID=41517607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920302493U Expired - Fee Related CN201377499Y (en) | 2009-04-23 | 2009-04-23 | Structure preventing bolt from irregular breaking when force applied exceeds specified value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453000A (en) * | 2012-05-29 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Safety bolt with blind hole |
| CN112009569A (en) * | 2019-05-30 | 2020-12-01 | 上海汽车集团股份有限公司 | Active separation system for automobile, automobile body and auxiliary frame and active separation bolt thereof |
-
2009
- 2009-04-23 CN CN200920302493U patent/CN201377499Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453000A (en) * | 2012-05-29 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Safety bolt with blind hole |
| CN112009569A (en) * | 2019-05-30 | 2020-12-01 | 上海汽车集团股份有限公司 | Active separation system for automobile, automobile body and auxiliary frame and active separation bolt thereof |
| CN112009569B (en) * | 2019-05-30 | 2021-11-09 | 上海汽车集团股份有限公司 | Active separation system for automobile, automobile body and auxiliary frame and active separation bolt thereof |
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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: 20100106 Termination date: 20140423 |