CN204572674U - A kind of crack resistence project-welding nut structure - Google Patents
A kind of crack resistence project-welding nut structure Download PDFInfo
- Publication number
- CN204572674U CN204572674U CN201520044652.5U CN201520044652U CN204572674U CN 204572674 U CN204572674 U CN 204572674U CN 201520044652 U CN201520044652 U CN 201520044652U CN 204572674 U CN204572674 U CN 204572674U
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- China
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- fixed plate
- nut
- boss
- project
- end surface
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Abstract
The utility model discloses a kind of crack resistence project-welding nut structure, comprise nut, the lower end surface of nut is plane, nut upper-end surface is provided with boss, boss is provided with the matching hole identical with nut thread hole, and boss upper-end surface is welded with fixed plate, is provided with the through hole identical with matching hole in the middle part of fixed plate, the cylinder of fixed plate is trapezoidal plate, and the biside plate lower end of trapezoidal plate is provided with the level board of integrated, outside bending.Project-welding nut structure of the present utility model is being fixed by fixed plate and body, the link position of fixed plate and body may be selected in from the low gravisphere away from bolt hole place, after bolt connects, be face contact between nut and connected piece, and there is not stress that solder joint causes and concentrate and the reduction of fatigue strength to body.Fixed plate has certain rigidity, and after bolt is fixing, the spring-back force that fixed plate deforms plays obvious locking effect to bolt.
Description
technical field:
The utility model relates to automobile manufacturing field, particularly relates to a kind of crack resistence project-welding nut structure.
background technique:
At present, usually, various equipment is all made up of a lot of component, especially jumbo and stressed larger component often with bolts.One is that bolt connection can bear large load, and two is that overhaul of the equipments dismounting and part replacement are convenient in bolt connection.Much bear the position of large load, installing space is narrow and small, need first by nut-welding on the side body be connected, be then bolted at opposite side.
The reduction of the body fatigue strength of the welding part that existing project-welding nut causes when welding on connected piece body, and welding part shortcoming can cause stress to be concentrated.Be point cantact in projection welding place between project-welding nut and body, load is transmitted at nut and being connected between body by four soldering points, there is obvious stress and concentrate.If nut putting position is not good during welding, easy nut end face tilts, and can cause the aggravation that stress is concentrated, and accelerates welding position cracking.Once it is abnormally dangerous that cracking occurs, the generation that severe patient causes a serious accident.
model utility content:
In order to make up prior art problem, the purpose of this utility model is to provide a kind of crack resistence project-welding nut structure, easy for installation, effectively prevents welding of projection welded nut place stress from concentrating simultaneously and causes cracking.
The technical solution of the utility model is as follows:
Crack resistence project-welding nut structure, comprise nut, it is characterized in that: the lower end surface of described nut is plane, nut upper-end surface is provided with boss, boss is provided with the matching hole identical with nut thread hole, and boss upper-end surface is welded with fixed plate, is provided with the through hole identical with matching hole in the middle part of fixed plate, the cylinder of fixed plate is trapezoidal plate, and the biside plate lower end of trapezoidal plate is provided with the level board of integrated, outside bending.
Described crack resistence project-welding nut structure, is characterized in that: the whole height of described fixed plate is less than the total height of nut and boss, is less than general range at 0.3 ~ 0.8mm.
The utility model has the advantages that:
1, project-welding nut structure of the present invention is being fixed by fixed plate and body, the link position of fixed plate and body may be selected in from the low gravisphere away from bolt hole place, after bolt connects, be face contact between nut and connected piece, and there is not stress that solder joint causes and concentrate and the reduction of fatigue strength to body.
2, fixed plate has certain rigidity, and after bolt is fixing, the spring-back force that fixed plate deforms plays obvious locking effect to bolt, and meanwhile, fixed plate also can be shared a part and act on load on project-welding nut, ensures overall stressed more even.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is fixed plate structure schematic diagram of the present utility model.
embodiment:
See accompanying drawing:
Crack resistence project-welding nut structure, comprise nut 1, the lower end surface of nut is plane, object occurs stress raisers after avoiding bolt tightening, the contact of employing face effectively can fall stress concentration, nut 1 upper-end surface is provided with boss 2, boss 2 is provided with the matching hole 3 identical with nut thread hole, boss 3 upper-end surface is welded with fixed plate 4, the through hole 5 identical with matching hole 3 is provided with in the middle part of fixed plate 4, the cylinder of fixed plate 4 is trapezoidal plate 4-1, the biside plate lower end of trapezoidal plate 4-1 is provided with integrated, the level board 4-2 of outside bending, the entire length of fixed plate can design according to the feature of actual use position.
The whole height of fixed plate 4 is less than the total height of nut 1 and boss 2, is less than general range at 0.3 ~ 0.8mm, is generally 0.5mm, fixed plate is used for welding between the body of connected piece, after bolt connects, fixed plate produces certain distortion, is conducive to screw retention.
Fixed plate is that general steel plate is stamped to form, and can be the waste material that other parts machinings produce, and makes full use of other waste materials and greatly can reduce cost in production.Fixed plate can adopt spot welding according to actual conditions with between boss and connected piece or edge welds.
Claims (2)
1. a crack resistence project-welding nut structure, comprise nut, it is characterized in that: the lower end surface of described nut is plane, upper-end surface is provided with boss, boss is provided with the matching hole identical with nut thread hole, and boss upper-end surface is welded with fixed plate, is provided with the through hole identical with matching hole in the middle part of fixed plate, the cylinder of fixed plate is trapezoidal plate, and the biside plate lower end of trapezoidal plate is provided with the level board of integrated, outside bending.
2. crack resistence project-welding nut structure according to claim 1, is characterized in that: the whole height of described fixed plate is less than the total height of nut and boss, is less than general range at 0.3 ~ 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044652.5U CN204572674U (en) | 2015-01-22 | 2015-01-22 | A kind of crack resistence project-welding nut structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044652.5U CN204572674U (en) | 2015-01-22 | 2015-01-22 | A kind of crack resistence project-welding nut structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572674U true CN204572674U (en) | 2015-08-19 |
Family
ID=53865318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520044652.5U Expired - Fee Related CN204572674U (en) | 2015-01-22 | 2015-01-22 | A kind of crack resistence project-welding nut structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595314A (en) * | 2015-01-22 | 2015-05-06 | 安徽机电职业技术学院 | Anti-cracking projection welding nut structure |
-
2015
- 2015-01-22 CN CN201520044652.5U patent/CN204572674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595314A (en) * | 2015-01-22 | 2015-05-06 | 安徽机电职业技术学院 | Anti-cracking projection welding nut structure |
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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: 20150819 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |