CN207131984U - A kind of modified form bellows - Google Patents
A kind of modified form bellows Download PDFInfo
- Publication number
- CN207131984U CN207131984U CN201721062351.0U CN201721062351U CN207131984U CN 207131984 U CN207131984 U CN 207131984U CN 201721062351 U CN201721062351 U CN 201721062351U CN 207131984 U CN207131984 U CN 207131984U
- Authority
- CN
- China
- Prior art keywords
- blank
- bellows
- swivel nut
- ripple tube
- tube rod
- 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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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
It the utility model is related to Bellows Technology field, more particularly to a kind of modified form bellows, it includes ripple tube body, the ripple tube body includes ripple tube rod, ripple tube rod includes blank, swivel nut is embedded in blank in the preforming green compact of blank, and an overall base pipe is formed with swivel nut after the completion of blank sintering；Ripple tube rod is formed after bellows segment processing on the base pipe；, using swivel nut is embedded in blank in the preforming green compact of blank, blank sintering completes rear thread sleeve and forms an entirety, then carries out bellows segment processing, ensures the service life of swivel nut for it；It has simple in construction, drastically increases service life, has saved cost.
Description
Technical field
Bellows Technology field is the utility model is related to, more particularly to a kind of modified form bellows.
Background technology
Bellows refers to the tubular elastomeric sensing element connected into foldable wrinkle piece along folding retractable direction.Bellows
Be widely used in instrument and meter, be mainly used for the measuring cell as pressure measuring instruments, convert pressure into displacement or
Power.Ripple tube wall is relatively thin, and sensitivity is higher, and measurement range is tens of pas to tens of MPas.Its openend is fixed, sealed end
In free state, and utilize helical spring or reed the increase elasticity of auxiliary.During work internally in the presence of pressure along pipe
Sub- elongated lengthwise, movable end is set to produce the displacement with pressure into certain relation.Movable end drives pointer directly to indicate
The size of pressure.Bellows usually combines with displacement transducer forms pressure sensor of the output for electricity, also uses sometimes
Make isolation element.
Metal bellows first has to meet strength condition, i.e., its maximum stress is no more than given as elastic packing part
Under the conditions of allowable stress.Allowable stress can be drawn by limit stress divided by safety coefficient.According to the condition of work of bellows and
To its requirement, limit stress when limit stress can be yield strength or bellows unstability, or it is tired
Labor intensity etc..
When in use, there are the following problems for traditional bellows：As shown in figure 1, traditional bellows connection screw thread is taken
Direct tapping or use self-tapping type connection screw thread set on plastic components 1a, swivel nut holds when high-frequency fine motion is gone up in screw rod connection
Easily it is drawn out, causes to fail.
Utility model content
The defects of the purpose of this utility model is to be directed to prior art and deficiency, there is provided a kind of modified form bellows, it
It is embedded in using by swivel nut in the preforming green compact of blank in blank, blank sintering completes rear thread sleeve and forms an entirety, then enters
Row bellows segment is processed, and ensures the service life of swivel nut；It has simple in construction, drastically increases service life, saved into
This.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of modified form bellows described in the utility model, it includes ripple tube body, and the ripple tube body includes ripple
Line tube rod, ripple tube rod include blank, and swivel nut is embedded in blank in the preforming green compact of blank, blank sintering after the completion of with spiral shell
Set forms an overall base pipe；Ripple tube rod is formed after bellows segment processing on the base pipe.
After said structure, the utility model has the beneficial effect that：A kind of modified form bellows described in the utility model,
, using swivel nut is embedded in blank in the preforming green compact of blank, blank sintering completes rear thread sleeve and forms an entirety for it, then
Bellows segment processing is carried out, ensures the service life of swivel nut；It has simple in construction, drastically increases service life, saves
Cost.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model background technology；
Fig. 2 is that swivel nut is embedded in the structural representation during hair is gone bad in the utility model；
Fig. 3 is the utility model finished product structure schematic diagram.
Description of reference numerals：
1st, blank；2nd, swivel nut；3rd, base pipe；4th, bellows segment；5th, ripple tube rod.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Fig. 2-Fig. 3, a kind of modified form bellows described in the utility model, it includes ripple tube body, the ripple
Line tube body includes ripple tube rod, and ripple tube rod includes blank 1, and swivel nut 2 is embedded in blank 1 in the preforming green compact of blank,
After the completion of the sintering of blank 1 an overall base pipe 3 is formed with swivel nut 2；Ripple tube rod is formed after bellows segment 4 is processed on the base pipe 3
5。
Operation principle of the present utility model is as follows：
The design and the difference of traditional bellows are：Blank 1 is embedded in advance using by swivel nut 2, and then sintering is completed
Afterwards, an overall base pipe 3 is formed with swivel nut 2；Bellows segment 4 again on blank 1 is enterprising plus corrugating processing, forms ripple tube rod 5.
In the design, the structure that swivel nut is assemblied in bellows have adjusted using said structure, from without working as spiral shell
The phenomenon that swivel nut is easily drawn out when bar connects upper high-frequency fine motion, so as to ensure that being normally carried out for work, extend bellows
Service life.
In the design, bellows segment 4 on base pipe 3 is processed, ripple struction is formed, eventually forms ripple tube rod 5.
A kind of modified form bellows described in the utility model, it uses and is embedded in swivel nut in the preforming green compact of blank
In blank, blank sintering completes rear thread sleeve and forms an entirety, then carries out bellows segment processing, ensures the service life of swivel nut；It
With simple in construction, service life is drastically increased, has saved cost.
Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent application range
The equivalent change or modification done of construction, feature and principle, be included in the utility model patent application range.
Claims (1)
- A kind of 1. modified form bellows, it is characterised in that：It includes ripple tube body, and the ripple tube body includes ripple tube rod, Ripple tube rod includes blank (1), and swivel nut (2) is embedded in blank (1) in the preforming green compact of blank, and blank (1) sintering is completed Afterwards an overall base pipe (3) is formed with swivel nut (2)；Ripple tube rod (5) is formed after bellows segment (4) processing on the base pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721062351.0U CN207131984U (en) | 2017-08-24 | 2017-08-24 | A kind of modified form bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721062351.0U CN207131984U (en) | 2017-08-24 | 2017-08-24 | A kind of modified form bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131984U true CN207131984U (en) | 2018-03-23 |
Family
ID=61635801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721062351.0U Expired - Fee Related CN207131984U (en) | 2017-08-24 | 2017-08-24 | A kind of modified form bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131984U (en) |
-
2017
- 2017-08-24 CN CN201721062351.0U patent/CN207131984U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 Termination date: 20200824 |