CN202382884U - Pressure sensing device - Google Patents
Pressure sensing device Download PDFInfo
- Publication number
- CN202382884U CN202382884U CN2011205176488U CN201120517648U CN202382884U CN 202382884 U CN202382884 U CN 202382884U CN 2011205176488 U CN2011205176488 U CN 2011205176488U CN 201120517648 U CN201120517648 U CN 201120517648U CN 202382884 U CN202382884 U CN 202382884U
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- China
- Prior art keywords
- cylinder body
- liquid medium
- medium layer
- cylinder
- push rod
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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 - Fee Related
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Abstract
The utility model relates to a pressure sensing device, comprising a cylinder, a top rod, a liquid medium layer and a pressure gauge; the top rod is arranged in the cylinder; a cross section of a rod body of the top rod has the same shape, size as the cross section of a lumen of the cylinder; the liquid medium layer is arranged at bottom of the lumen of the cylinder; an elastic partition piece is arranged between a top end of the top rod extending into the cylinder and the liquid medium layer; the elastic partition piece seals the liquid medium layer at bottom of the lumen of the cylinder. The pressure sensing device provided by the utility model is characterized by simple structure, large range of transferrable pressure, small transfer force loss, high precision and low cost, is processed and manufactured easily, and is suitable for popularization and application.
Description
Technical field
The utility model relates to mechanical force surveying instrument technical field, particularly a kind of pressure sensor device.
Background technology
Mechanical force sensing device in the past has two kinds of versions of leather cup formula and plunger type usually.The former is made up of cylinder body, push rod, leather cup, liquid medium and pressure transducer.It is big that it in use exposes axial displacement, only is applicable to the test of interior mechanical force, makes its usable range receive certain limitation, and volume takes up room many greatly simultaneously; Another kind of plunger type mechanical force sensing device comprises cylinder body, plunger, liquid medium and tensimeter.Though the scope of test mechanical power compares broad; But because the matching surface precision prescribed of its cylinder body and plunger is high, processing technology is strict; Cause that cost is high, sealing property is relatively poor; Many unsatisfactory parts such as the mechanical force loss of transmitting is bigger, and measuring accuracy is relatively low await further overcoming.
For these reasons, design a kind of simple in structurely, the mechanical force loss of transmission is little, and the pressure sensor device that measuring accuracy is high is problems of needing solution badly of those skilled in the art.
The utility model content
To the defective that above-mentioned prior art exists, the purpose of the utility model provides a kind of simple in structure, and the mechanical force loss of transmission is little, the pressure sensor device that measuring accuracy is high.
The technical scheme of the utility model is:
A kind of pressure sensor device comprises cylinder body, push rod; Liquid medium layer and tensimeter; Said push rod is arranged in the cylinder body, the xsect of push rod shaft and the shape of cross section of inner chamber of cylinder block, big or small identical, and the liquid medium layer is arranged on the bottom of inner chamber of cylinder block; Said push rod stretches between top and the liquid medium layer of cylinder part and is provided with a resilient spacer, and said resilient spacer is sealed in the liquid medium layer bottom of inner chamber of cylinder block.
The characteristic of the utility model is that also the surface area of top end surface that described push rod stretches into cylinder part is less than the surface area of resilient spacer.
The characteristic of the utility model is that also side that described resilient spacer contacts with inboard wall of cylinder block is the circular arc of evagination.
The characteristic of the utility model is that also said cylinder body is columniform stainless steel cylinder body.
The characteristic of the utility model is that also said resilient spacer adopts rubber or silica gel material to make.
The beneficial effect of the utility model is:
Owing between push rod and liquid medium layer, be provided with resilient spacer, the side that described resilient spacer contacts with inboard wall of cylinder block is the circular arc of evagination, and the surface area of top end surface that described push rod stretches into cylinder part is less than a series of technical measures such as surface area of resilient spacer; And axially displacement is little after evidence has push rod stressed; Advantages such as the loss of transmission power is few, and sensitive error is little, and the scope of application of the precision height and the power of transmission is big; Volume is little simultaneously, processing and manufacturing is easy, reduces cost.Because good seal performance has been saved liquid medium.
The utility model provides that a kind of volume is little, axial displacement is little, has transmitted the wide ranges of mechanical force, and it is little to transmit the power loss simultaneously, and precision is high, good seal performance, and processing and manufacturing simultaneously is easy, reduces cost the mechanical force sensing device that range of application is bigger.
The utility model is the core component of mechanical force surveying instrument, also is first-selected matching component such as all kinds of weight scale, tautness meter and tension measuring device.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
With reference to accompanying drawing 1, the specific embodiment 1 of the utility model is proposed, as shown in the figure; A kind of pressure sensor device comprises cylinder body 1, push rod 2; Liquid medium layer 3 and tensimeter 4; Said push rod 2 is arranged in the cylinder body 1, the xsect of push rod 2 shafts and the shape of cross section of cylinder body 1 inner chamber, big or small identical, and liquid medium layer 3 is arranged on the bottom of cylinder body 1 inner chamber; Said push rod 2 stretches between top and the liquid medium layer 3 of cylinder body 1 part and is provided with a resilient spacer 5, and said resilient spacer 5 is sealed in liquid medium layer 3 bottom of cylinder body 1 inner chamber.
Can see that from Fig. 1 described push rod 2 stretches into the surface area of top end surface of cylinder body 1 part less than the surface area of resilient spacer 5.The side that described resilient spacer 5 contacts with cylinder body 1 inwall is the circular arc of evagination.Be beneficial to resilient spacer 5 like this and not only transmit mechanical force but also produce distortion when stressed, and the circular arc of resilient spacer 5 sides rolls along cylinder body 1 inwall trace and keeps good sealing.
The utility model is characterised in that said cylinder body 1 is columniform stainless steel cylinder body 1.
The utility model is characterised in that said resilient spacer 5 adopts rubber or silica gel material to make.
The principle of the utility model:
When push rod 2 is stressed, power is passed to resilient spacer 5, pass to liquid medium layer 3 in order, offer display device to pressure signal through tensimeter 4 again.
The above is merely the preferred embodiment of the utility model; Be not therefore and the claim of restriction the utility model; Every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (4)
1. pressure sensor device; It is characterized in that: comprise cylinder body (1); Push rod (2), liquid medium layer (3) and tensimeter (4), said push rod (2) are arranged in the cylinder body (1); The xsect of push rod (2) shaft and the shape of cross section of cylinder body (1) inner chamber, big or small identical; Liquid medium layer (3) is arranged on the bottom of cylinder body (1) inner chamber, and said push rod (2) stretches between top and the liquid medium layer (3) of cylinder body (1) part and is provided with a resilient spacer (5), and said resilient spacer (5) is sealed in liquid medium layer (3) bottom of cylinder body (1) inner chamber.
2. pressure sensor device according to claim 1 is characterized in that: described push rod (2) stretches into the surface area of the surface area of cylinder body (1) top end surface partly less than resilient spacer (5).
3. pressure sensor device according to claim 1 is characterized in that: the side that described resilient spacer (5) contacts with cylinder body (1) inwall is the circular arc of evagination.
4. according to claim 1,2 or 3 described pressure sensor devices, it is characterized in that: said cylinder body (1) is columniform stainless steel cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205176488U CN202382884U (en) | 2011-12-13 | 2011-12-13 | Pressure sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205176488U CN202382884U (en) | 2011-12-13 | 2011-12-13 | Pressure sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382884U true CN202382884U (en) | 2012-08-15 |
Family
ID=46631379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205176488U Expired - Fee Related CN202382884U (en) | 2011-12-13 | 2011-12-13 | Pressure sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382884U (en) |
-
2011
- 2011-12-13 CN CN2011205176488U patent/CN202382884U/en not_active Expired - Fee Related
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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: 20120815 Termination date: 20131213 |