CN202381830U - Bellow assembly for single-channel pneumatic control valve - Google Patents
Bellow assembly for single-channel pneumatic control valve Download PDFInfo
- Publication number
- CN202381830U CN202381830U CN2011205017072U CN201120501707U CN202381830U CN 202381830 U CN202381830 U CN 202381830U CN 2011205017072 U CN2011205017072 U CN 2011205017072U CN 201120501707 U CN201120501707 U CN 201120501707U CN 202381830 U CN202381830 U CN 202381830U
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- China
- Prior art keywords
- bellow
- termination
- control valve
- pneumatic control
- bellows
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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 - Lifetime
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Abstract
The utility model provides a bellow assembly for a single-channel pneumatic control valve. The bellow assembly is characterized in that a limiting rod is in an interference connection with an end, a ball end is connected with the end in a vacuum electron beam welding mode, and the end and a bellow are an integrated part. The bellow assembly for the single-channel pneumatic control valve has the advantages that the end and the bellow are simplified to the integrated part and molded in stretching mold through oil pressure, the connection of the end with the bellow through the vacuum electron beam welding is omitted, the heat shock is reduced, and the elasticity of the bellow is maintained. Stainless acid-resistant steel is adopted for the bellow, the rigidity and elasticity of the bellow assembly are improved after the improvement of the single wave axial rigidity of the bellow, a spring in the middle of the bellow assembly is omitted, the bend of the bellow assembly caused by the bend of the spring is also prevented, and the coaxiality of the ball end and the end of the bellow assembly is improved. According to the bellow assembly, only the ball end, the end and the limiting rod are used, parts are few, the manufacturing process is simplified, the process is simple, the failure probability is controllable, the process cost is reduced, and the product technological economy is optimized.
Description
Technical field
The utility model relates to the bellows component that a kind of single channel pneumatic control valve is used, particularly a kind of termination is the bellows component of drawing and forming.Belong to the car air conditioner variable compressor single channel brake control valve attachment technique field of taking offence.
Background technique
In recent years, variable compressor dress in batches is used for automotive air-conditioning system, and automotive air-conditioning system for the operator brings comfortable impression, and is liked by masses just gradually because of regulating the ambient temperature in the automobile, becomes one of standard configuration of automobile.Along with the people's lives improvement of terms, material conditions are abundant gradually, and automobile just progressively gets into huge numbers of families.Under the prerequisite that ride safety of automobile property progressively improves, riding travelling comfort is also paid close attention to by the operator gradually.In the riding travelling comfort of automobile, comprise automobile riding jolt little, seat comfort, environment inside car travelling comfort etc.At present, most automotive air-conditioning system has disposed variable compressor, wherein in the variable compressor use of part contain the single channel pneumatic control valve of bellows component.When the single channel pneumatic control valve in automotive air-conditioning system during real work; Because the processing conformity of part is relatively poor; And the level of existing manufacturing process technology limitation; And automobile goes at complex road condition through regular meeting, always has the situation that body oscillating jolts and takes place, phenomenons such as bellows component self part occurs getting loose, ruptures because the structure of existing single channel pneumatic control valve inner corrugated pipe assembly and part matching relationship each other thereof cause easily, bending.Such as: 1; Existing bellows component (accompanying drawing 2) adopts the bellows two ends to connect through vacuum electron beam welding mode with end cap respectively; In this structure, need carry out twice vacuum electron beam welding, not only bellows component welding leak rates increases; And also there be twice thermal shock in bellows component self, cause bellows elasticity to reduce easily.And end cap and bulb or termination adopt the riveted joint mode to connect, end cap with bulb or termination riveted joint process in occur damagedly easily, leaking appears in bellows component.Cause the function of bellows component to reduce, cause the ability of single channel pneumatic control valve adjustment compressor displacement to reduce or inefficacy then until disabler.The final impression that influences the automobile operator, operator's well being degree reduces.2, in existing bellows component (accompanying drawing 2) structure, in the confined space that constitutes by bellows, left end cap, right end cap, contain the spring that two ends polish.Because the processing conformity of spring is poor, and the level of existing spring manufacturing process technology limitation, when perpendicularity deviation occurring like the center line of both ends of the spring flat surface grinding and spring; Under the effect of this flexural spring, bellows component occurs crooked, causes bellows component disalignment in the single channel pneumatic control valve; When variable compressor is in the vibration operating mode; The single channel pneumatic control valve operation of this state will be in an unsure state, and the function of adjustment compressor displacement occurs unstable, causes whole automotive air-conditioning system fluctuation of service then; The final impression that influences the automobile operator, operator's well being degree reduces.3, existing bellows component (accompanying drawing 2) is made up of a bulb, two end caps, a spring, five parts in a termination, and part is more.And in manufacture process, contain operations such as riveted joint, assembling, electron beam vacuum welding, leak detection, complex process.Part is many, complex process, and failure probability is big, the technology cost is higher.
Summary of the invention
What the utility model proposed is the bellows component that a kind of single channel pneumatic control valve is used, and its purpose is intended to overcome the above-mentioned defective of existing in prior technology, has characteristics such as part is few, technology is simple, reasonable in design, stable.
The technical solution of the utility model: it is characterized in that comprising bulb, termination and position-limited lever, wherein position-limited lever and termination interference fit joint, bulb connects through vacuum electron beam welding mode with the termination, and termination and bellows are integral piece.
Described position-limited lever is pressed into the working clearance of the length of termination greater than bellows component.
The advantage of the utility model: 1) termination and bellows are reduced to integral piece,, omit the termination and connect through the vacuum electron beam welding, reduce thermal shock, kept the elasticity of bellows with bellows through the oil pressure drawing and forming.2) bellows has adopted Stainless Acid Resistant Steel, improve bellows list ripple axial rigidity after, the rigidity and the elastic force of bellows component are improved, and save the spring in the middle of the bellows component, also with regard to the bending of the bellows component that prevented to cause owing to spring bending.The bulb of bellows component and the coaxality of termination have been improved.3) this bellows component is only used bulb, termination, position-limited lever, and part is few, and manufacture process is simplified, technology is simple, and failure probability is controlled, and the technology cost reduces, and product technology economy is optimized.
Description of drawings
Accompanying drawing 2 is prior art constructions schematic representation.
1 is bulb among the figure, the 2nd, and termination, the 3rd, position-limited lever, the 4th, vacuum electron beam welding (end), the 5th, interference fit joint length, the 6th, working clearance, the 7th, bulb, the 8th, bellows, the 9th, spring, the 10th, end cap, the 11st, termination, the 12nd, vacuum electron beam welding (two ends).
Embodiment
Described position-limited lever 3 is during with termination 2 interference fit joint, and position-limited lever 3 is pressed into the length of termination 2 should be greater than the working clearance of bellows component.
Described termination 2 is to be the oil pressure tensioning member of one with bellows.
When described bulb 1 connects with termination 2, adopt vacuum electron beam welding mode to connect, and the vacuum cavity volume of a bulb and a sealing of termination welding back formation, only there is a position-limited lever 3 this cavity volume inside, position-limited lever 3 and termination 2 Desing of Interference Joint.
Described bulb 1 is chosen to be Stainless Acid Resistant Steel with termination 2 materials.
Termination and bellows are that the working procedure of bellows component in the single channel pneumatic control valve of integral piece is: when the rocker cavity pressure rising of variable compressor; The elastic force that is higher than single channel pneumatic control valve inner corrugated pipe assembly self; Bellows component will produce and shorten along the bellows core axis under the effect of pressure.When the rocker cavity pressure reduction of variable compressor, be lower than the elastic force of single channel pneumatic control valve inner corrugated pipe assembly self, bellows component will produce along the bellows core axis elongation under the effect of pressure.
Claims (4)
1. the bellows component that the single channel pneumatic control valve is used is characterized in that comprising bulb, termination and position-limited lever, wherein position-limited lever and termination interference fit joint, and bulb connects through vacuum electron beam welding mode with the termination, and termination and bellows are integral piece.
2. the bellows component that a kind of single channel pneumatic control valve according to claim 1 is used is characterized in that position-limited lever is pressed into the working clearance of the length of termination greater than bellows component.
3. the bellows component that a kind of single channel pneumatic control valve according to claim 1 is used is characterized in that described termination and bellows integral piece are the oil pressure tensioning members.
4. the bellows component that a kind of single channel pneumatic control valve according to claim 1 is used; It is characterized in that it is the vacuum electron beam welding that described bulb connects with the termination; Bulb and welding back, termination form the vacuum cavity volume of a sealing, and only there is a position-limited lever this cavity volume inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017072U CN202381830U (en) | 2011-12-06 | 2011-12-06 | Bellow assembly for single-channel pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017072U CN202381830U (en) | 2011-12-06 | 2011-12-06 | Bellow assembly for single-channel pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381830U true CN202381830U (en) | 2012-08-15 |
Family
ID=46630333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205017072U Expired - Lifetime CN202381830U (en) | 2011-12-06 | 2011-12-06 | Bellow assembly for single-channel pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063177A (en) * | 2012-12-27 | 2013-04-24 | 太原航空仪表有限公司 | Sensitive element with high precision resistant to high temperature and high pressure |
-
2011
- 2011-12-06 CN CN2011205017072U patent/CN202381830U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063177A (en) * | 2012-12-27 | 2013-04-24 | 太原航空仪表有限公司 | Sensitive element with high precision resistant to high temperature and high pressure |
| CN103063177B (en) * | 2012-12-27 | 2015-08-19 | 太原航空仪表有限公司 | A kind of high temperature high voltage resistant high precision sensitive element |
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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 |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |