CN202158264U - Fixed-connecting structure - Google Patents
Fixed-connecting structure Download PDFInfo
- Publication number
- CN202158264U CN202158264U CN2011202339159U CN201120233915U CN202158264U CN 202158264 U CN202158264 U CN 202158264U CN 2011202339159 U CN2011202339159 U CN 2011202339159U CN 201120233915 U CN201120233915 U CN 201120233915U CN 202158264 U CN202158264 U CN 202158264U
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- CN
- China
- Prior art keywords
- steel pipe
- jointing
- steel tube
- joint
- connecting joint
- 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 - Fee Related
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model discloses a fixed-connecting structure, which can be applied to fixed connection between a steel tube and a connecting joint of an oil tube of a vehicle. The fixed-connecting structure comprises a steel tube (1) and a connecting joint (2), the steel tube (1) is inserted into the connecting joint (2), and the outer circumference of the steel tube (1) is in interference fit with the inner circumference of the connecting joint (2). Copper paste is coated on the connecting portion between the steel tube (1) and the connecting joint (2), and brazing treatment is performed between the steel tube (1) and the connecting joint (2). The fixed-connecting structure achieves fixed connection between the steel tube and the connecting joint of the oil tube of the vehicle, avoids leakage caused by dropping of components in following brazing and improves working reliability and finished rate of products.
Description
Technical field
The utility model relates to component assembling interconnection technique field, is specifically related to a kind of fixed connection structure.
Background technique
The automobile power steering system is made up of numerous component, and distance is very little between each component, and therefore, oil pipe need adopt support to fix, and collides with to avoid producing between the generation of oil pipe and other part.In the existing technology, the support that is used for fixing oil pipe often adopts soldering processes to be fixed on the steel pipe, and its temperature is about 1100 ℃ during soldering; On the other hand, the general jointing that adopts seals between oil pipe and steel pipe.Therefore; In the automobile power steering system; Because support need be fixed on through the mode of soldering on the steel pipe; Cause leakage for fear of in brazing process, coming off between each component, thereby obtain excellent sealing performance and functional reliability, become those skilled in the art assistant officer's technical problem to be solved for the fixed connection structure of steel pipe and jointing.
In the existing technology; Can adopt the mode of high frequency welding to be fixedly connected the position of joint on steel pipe; Specific as follows: that steel pipe is inserted joint and is placed in the inductor coil of high frequency welding machine; Utilize the Ag-Sn welding wire to be filled into the slit between steel pipe and the joint 800 ℃ of fusings, steel pipe and jointing can access fixing like this.Be coated with into copper cream at the position of needs welding then, and put into soldering oven and carry out soldering.When product is carried out leakage test; Leaking appears in the joint of steel pipe and jointing; Its reason is that the Ag-Sn welding wire under 1100 ℃ of action of high temperature local flow's mistake takes place in soldering; The copper cream that is coated in both joints when making the soldering operation is not filled into, thereby causes the leakage of the joint of steel pipe and jointing.
The model utility content
To above defective, the utility model provides a kind of fixed connection structure, realized being fixedly connected of steel pipe and jointing, avoid each component obscission when soldering and caused leakage, improved the functional reliability and the yield rate of product.
For realizing above-mentioned purpose, the utility model is realized through following technological scheme:
A kind of fixed connection structure is applied in being fixedly connected between the jointing of steel pipe and automobile oil pipe, comprises steel pipe 1 and jointing 2, and steel pipe 1 is inserted in the jointing 2, and is interference fit between the inner circumference of the excircle of steel pipe 1 and jointing 2.
Preferably, at the joint coated copper cream of steel pipe 1 and jointing 2, and steel pipe 1 and jointing 2 are carried out soldering handle.
Compared with prior art, the utlity model has following beneficial effect:
In the utility model; Steel pipe is inserted in the jointing; Be interference fit between the excircle of steel pipe and the inner circumference of jointing; At both joint coated copper cream, and steel pipe and jointing are carried out soldering handle, realized being fixedly connected between the jointing of steel pipe and automobile oil pipe.Through being fixedly connected earlier the position of joint, prepare for follow-up soldering welding location, avoid each component obscission when follow-up soldering and caused leakage, improved the functional reliability and the yield rate of product.
Description of drawings
According to embodiment and accompanying drawing the utility model is done further explain below.
Fig. 1 is the sectional drawing of steel pipe in the utility model.
Fig. 2 is the sectional drawing of jointing in the utility model.
Fig. 3 is the fixed connection structure schematic representation of steel pipe and jointing in the utility model.
Embodiment
Be illustrated in figure 1 as the sectional drawing of steel pipe in the utility model.Be illustrated in figure 2 as the sectional drawing of jointing in the utility model.Be illustrated in figure 3 as the fixed connection structure schematic representation of steel pipe and jointing in the utility model.
With reference to accompanying drawing; A kind of fixed connection structure that the utility model proposes is applied in being fixedly connected between the jointing of steel pipe and automobile oil pipe, comprises steel pipe 1 and jointing 2; Steel pipe 1 is inserted in the jointing 2, and is interference fit between the inner circumference of the excircle of steel pipe 1 and jointing 2.At the joint coated copper cream of steel pipe 1 and jointing 2, and steel pipe 1 and jointing 2 are carried out soldering handle.
In specific operation process, can utilize mould at first with steel pipe undergauge 0.2mm, undergauge length designs according to the hole length of jointing; The hole internal diameter size design of jointing becomes than the little 0.08～0.15mm of the steel pipe behind the undergauge; Make outer diameter of steel pipes become interference fit, then, steel pipe is inserted in the jointing with the joint internal diameter; The realization steel pipe is fixedly connected with jointing; Next step, the coated copper cream in the joint of steel pipe and jointing, and in soldering oven, steel pipe and jointing are carried out soldering.Through product is carried out leakage test, its product percent of pass is 100%.
In the utility model; Steel pipe is inserted in the jointing; Be interference fit between the excircle of steel pipe and the inner circumference of jointing; At both joint coated copper cream, and steel pipe and jointing are carried out soldering handle, realized being fixedly connected between the jointing of steel pipe and automobile oil pipe.Through being fixedly connected earlier the position of joint, prepare for follow-up soldering welding location, avoid each component obscission when follow-up soldering and caused leakage, improved the functional reliability and the yield rate of product.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the realization of the utility model does not receive the restriction of aforesaid way; As long as adopted method design of the utility model and the various improvement that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all in the protection domain of the utility model.
Claims (2)
1. fixed connection structure; Be applied in being fixedly connected between the jointing of steel pipe and automobile oil pipe, it is characterized in that, comprise steel pipe (1) and jointing (2); Steel pipe (1) is inserted in the jointing (2), and is interference fit between the inner circumference of the excircle of steel pipe (1) and jointing (2).
2. fixed connection structure as claimed in claim 1 is characterized in that, at the joint coated copper cream of steel pipe (1) and jointing (2), and steel pipe (1) and jointing (2) is carried out soldering handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202339159U CN202158264U (en) | 2011-07-05 | 2011-07-05 | Fixed-connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202339159U CN202158264U (en) | 2011-07-05 | 2011-07-05 | Fixed-connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158264U true CN202158264U (en) | 2012-03-07 |
Family
ID=45765904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202339159U Expired - Fee Related CN202158264U (en) | 2011-07-05 | 2011-07-05 | Fixed-connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944696A (en) * | 2017-04-22 | 2017-07-14 | 广东鸿图南通压铸有限公司 | The welding procedure of powder metallurgy support and 1215 steel pipes |
-
2011
- 2011-07-05 CN CN2011202339159U patent/CN202158264U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944696A (en) * | 2017-04-22 | 2017-07-14 | 广东鸿图南通压铸有限公司 | The welding procedure of powder metallurgy support and 1215 steel pipes |
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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: 20120307 Termination date: 20160705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |