CN202119589U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
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- CN202119589U CN202119589U CN2011201100210U CN201120110021U CN202119589U CN 202119589 U CN202119589 U CN 202119589U CN 2011201100210 U CN2011201100210 U CN 2011201100210U CN 201120110021 U CN201120110021 U CN 201120110021U CN 202119589 U CN202119589 U CN 202119589U
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- pressure
- pressure transducer
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Abstract
The utility model relates to the semiconductor technology, especially relates to a pressure sensor, comprising a core body capable of realizing a pressure detection function independently. The pressure sensor is characterized in that a relatively independent shell capable of being assembled with the core body together to arrange the core body in a predetermined application place and protect the core body from the damage of a considerable degree of external force is also comprised. In the utility model, by designing an assembled usage mode of the relatively independent core body and the shell, the core bodies of same specification can be cooperated with various shells to adapt to various application environments. In addition, the preferred pressure sensor of the utility model is simple in core body structure, high in precision, good in reliability, long in service life, strong in impact resistance capability when assembled with the shell, convenient in usage, and can effectively solve the problem that liquid and air pressures can be detected directly at a low cost. The pressure sensor is simple in processing method, and is convenient for realizing a large scale automation production.
Description
Technical field
The utility model relates to semiconductor technology, a kind of specifically pressure transducer.
Background technology
Traditional pressure transducer does not generally comprise independently core body and shell, is provided with pressure and introduces on the main body in hole or in the shell but directly the pressure detecting element is installed in through modes such as gluing, welding.And the shape of the main body of conventional pressure sensor or shell and size do not have a unified standard.This present situation has been with inconvenience to people, is mainly reflected in following two aspects.
On the one hand; When designing the structure of those products that need be equipped with pressure transducer; Designer's optimal pressure transducer on selected a kind of function of having at first to comform in the pressure transducer of various models of multi-vendor production is then according to the concrete structure that is used for the position of setting pressure sensor in the design of Structural Parameters products such as the profile of pressure selected sensor and size.This makes the structural design of product upward pressure sensor installation position receive very big restriction.
On the other hand, because the use occasion of pressure transducer is varied, to the pressure transducer of identical function parameter, according to different use occasions, pressure transducer manufacturer has to produce the multiple sensors product with different contour structures parameters.This means that pressure transducer manufacturer need be equipped with a mold for the pressure transducer of each profile or size.Obviously this is unfavorable for reducing cost very much.
Therefore, do not have under the various present situation of unified standard, application scenario at present this pressure transducer, the scope of application of coming to increase as much as possible same pressure transducer through a kind of suitable mode is very significant.
Summary of the invention
The purpose of the utility model is to solve above-mentioned realistic problem, aims to provide a kind of novel pressure sensor, through design and the relatively independent shell of core body, to realize should being used for changing shell according to different, finally enlarges the purpose of the pressure transducer scope of application.
For realizing above-mentioned purpose; The technical scheme that the utility model is taked is: a kind of pressure transducer; Comprise the core body that independently to realize the pressure detection function; It is characterized in that, comprise that also one can fit together with said core body and is used for said core body is arranged on predetermined application place and can protect core body to avoid the relatively independent housing of the outside destroy of certain degree.
Saidly can realize solely that the core body of pressure detection function is meant: the pressure detection function of this core body and the structural relation of each building block do not rely on any other parts or structure and form and exist.The relatively independent of said housing is meant: housing is independent with respect to core body on function, and promptly the function of housing does not rely on the structure composition and independent existence of core body.
The utility model realizes that through designing the mode that relatively independent core body and shell combination are used the core body of same specification cooperates various housings to be applicable to multiple applied environment.Adopt the technical scheme of the utility model, need not design multiple sensors agent structure and corresponding production technology and production equipment for multiple application demand.Only need to get final product according to different Demand Design different shell structure and production mould.Complicated structure is formed and material is formed and housing is not because of it has, and its design and process are simple more than the pressure transducer core body.
When the user need customize the pressure transducer of given shape and size because of specific design requirements, if the described product of customization the utility model then only needs special customization housing to get final product.Its cost obviously is much lower for customization pressure transducer entire product.The user is when the product of design demand pressure sensor like this, also need not to consider to yield to because of customization pressure transducer cost is higher in the shape and size of unaccommodated existing pressure transducer also.
The preferred following structure of the core body of the utility model: the main part of said core body is molded; Conductive clips the inner of pressure transducer is injection-moulded in main part inside; Said main part is provided with and is used to introduce the through hole by measuring pressure; One pressure detecting element is installed on the said main part, and the one side that is used for induction pressure on the said pressure detecting element is sealed said through hole one end opening, and said through hole other end opening is that pressure is introduced the hole.The cover plate and the main part of one said pressure detecting element of covering and connection lead-in wire thereof are fixed.The fixed form of said cover plate and core body main part can adopt the gluing of routine, buckle, and screw threads etc. are any. preferred gluing fixed form.
Its advantage of above core is: core body main part integrated injection molding, simple in structure, processing and cost are lower easily.
On above-mentioned core basis, receive excessive instantaneous pressure and damage for fear of the pressure detecting element, can the said pressure intake of the main part of said core body form one on the whole and introduce the protuberance in hole in order to prolong pressure.In addition; Installation for the ease of the pressure detecting element; With the pressure detecting element is effectively protected; Can also be at main part design one the recess of said core body in order to ccontaining pressure detecting element, the opening of the end that said through hole is opposite with the pressure incoming direction is formed on the bottom surface of said recess.Said pressure detecting element can be fixed in the said recess through the high-performance adhesive glue; Further; Also can the metal lead wire that said pressure detecting element links to each other with conductive clips be sticked to adhesive glue on the main part of said core body, can protect the solder joint between metal lead wire and metal lead wire and pressure detecting element and the conductive clips when the core body judder, not damage like this.
The package assembly of its housing of the described pressure transducer of the utility model and core body can have multiple choices, comparative optimization be the inner chamber of housing to be designed to the structure that is complementary with said core body outer contour shape.Such as, the outline of core body is cylindrical, then the housing inner chamber also is designed to the core body overall size cylindrical accordingly.On this basis, the fixing and hermetically-sealed construction between housing and core body can have three kinds of situation: one, core body and housing inner chamber wringing fit, and the surface that contacts between the two directly compresses sealing, and core body also is fixed because of compressing of housing simultaneously.This fit structure is comparatively simple, ease of assembly.Just sealing effectiveness is relevant with the roughness and the quality of fit on the surface that contacts, and sealing effectiveness is unreliable.Two, core surface and housing inner chamber keep certain interval, fill elastic gum in the gap between said core body and housing to realize sealing and fixing.Three, said core body part surface and housing inner chamber retention gap, all the other surface of contact wringing fits are filled elastic gum to realize effectively sealing and fixing in the gap between said core body and housing.
As improvement,, can, housing design single order or multistage step surface in contacting the surface with core body in order further to improve the sealing effectiveness between housing and core body.
In addition; The outer peripheral face of said housing also can design some hermetically-sealed constructions that are used to improve housing and pressure transducer installation site fitting surface sealing, such as, establish seal groove on the surface that housing contacts with the installation position; During the setting pressure sensor, fitting tight circle in seal groove.
Description of drawings
Fig. 1 is the said core synoptic diagram of the utility model.
Fig. 2 is the structural representation that is provided with of pressure detecting element before the said core body encapsulation cover plate of the utility model.
Fig. 3 is said core body of the utility model and housing package assembly synoptic diagram.
Embodiment
Come the utility model is further specified with a concrete instance below in conjunction with accompanying drawing.
Referring to Fig. 1,2; In this example, the utility model is described can realize independently that the core body main part 1 of pressure detection function is molded, and the first half of said main part is cylindric projection 10; Lower Half is a packet, is provided with the upwards groove 9 of depression in the bottom of said main part.One pressure is introduced hole 5 and is provided with along cylindric projection axle center, the end face that is positioned at said post portion suitable for reading, and end opening is formed at the bottom surface of said groove 9.One silicon damping stress-strain sheet 4 adopts the high-performance adhesive glue to be fixed in the said groove 9.The pressure sensitive face of said silicon damping stress-strain sheet 4 is introduced said pressure the end opening sealing in hole 5.Six roots of sensation copper sheet 8 and six are injection-moulded in the pad point 7 of the corresponding connection of the six roots of sensation copper sheet main part 1 with said core body respectively, and said six pad points link to each other with six pins of silicon damping stress-strain sheet 4 respectively through six roots of sensation metal lead wire 6.Said metal lead wire 6 sticks to the bottom of core body main part by the colloid covering and by colloid.The main part bottom of said core body is provided with a cover plate 2 through gluing mode.Said cover plate 2 is encapsulated in inside with silicon damping stress-strain sheet 4 and connection thereof with metal lead wire 6, thereby it is protected.Be provided with on the said cover plate 2 one with the corresponding gas port 3 of silicon damping stress-strain sheet.In the time of with box lunch dress gauge pressure chip, need obtain with reference to pressing through this gas port 3.
With reference to Fig. 3, in this example, described housing 12 profiles of the utility model are cylindric, are provided with a cavity that matees with said core body appearance profile phase shown in Figure 1 in it, this cavity upper and lower opening.Said cavity is divided into two parts cavity up and down substantially, and the top cavity is and said core body main body top projection 10 friction tight cylindrical holes that the lower part cavity can be considered the groove that the bottom surface is provided with opening.Have gap 13 between cavity side surface, lower part and the said core body lower body part side surface.Be full of elastic gum in the said gap 13, make core body be fixed in the housing and make between the two and seal.
By visible among the figure, in order to improve the sealing effectiveness between core body and housing, the degree face on core body top projection and top is provided with two-stage step surface 14, closely cooperates with the step surface of said housing inner chamber.In addition, in order to improve pressure transducer in use, the sealing effectiveness of sensor installation position is provided with a level around the side annular seal groove 11 in one week at the outer peripheral face of said housing.Said annular seal groove is used to assemble diaphragm of rubber, to strengthen sealing.
In above-mentioned instance, pressure chip lead-in wire is directly connected on the copper sheet, and copper sheet is directly injection-moulded in the high performance material the inside, guides to the outside, can directly connect the All other routes plate, and convenient the application installed, and core body can break away from shell and independently uses in this instance.Through cover plate protection core body inner structure.The whole core body shell of packing into, and put into the high-performance adhesive glue in the gap, make sensor reliability higher!
Claims (10)
1. pressure transducer; Comprise the core body that independently to realize the pressure detection function; It is characterized in that, comprise that also one can fit together with said core body and is used for said core body is arranged on predetermined application place and can protect core body to avoid the relatively independent housing of the outside destroy of certain degree.
2. a kind of pressure transducer according to claim 1; It is characterized in that; The main part of said core body is molded, and conductive clips the inner of pressure transducer is injection-moulded in main part inside, and said main part is provided with through hole; One pressure detecting element is installed on the said main part; The pressure sensitive face of said pressure detecting element seals said through hole one end, and the other end of said through hole is that pressure is introduced the hole, and the cover plate and the main part of a said pressure detecting element of covering and connection lead-in wire thereof are fixed.
3. a kind of pressure transducer according to claim 2 is characterized in that, the above pressure intake place face of the main part of said core body is formed with in order to prolong pressure introduces the protuberance in hole.
4. a kind of pressure transducer according to claim 2; It is characterized in that; The main part of said core body is provided with a recess in order to ccontaining pressure detecting element, and the opening of the end that said through hole is opposite with the pressure incoming direction is formed on the bottom surface of said recess.
5. a kind of pressure transducer according to claim 4 is characterized in that, said pressure detecting element is fixed in the said recess through the high-performance adhesive glue.
6. a kind of pressure transducer according to claim 4 is characterized in that, the metal lead wire that said pressure detecting element links to each other with conductive clips adheres to each other through the main part of adhesive glue and said core body.
7. a kind of pressure transducer according to claim 1 is characterized in that, said housing contacts with core body and comprises single order or multistage step surface in the surface.
8. a kind of pressure transducer according to claim 1 is characterized in that, is provided with the cavity with said core body appearance profile phase coupling in the described housing.
9. a kind of pressure transducer according to claim 8 is characterized in that, said cavity upper and lower opening is full of elastic gum in the gap of said cavity.
10. a kind of pressure transducer according to claim 8 is characterized in that the outer peripheral face of said housing is provided with an annular seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100210U CN202119589U (en) | 2011-04-14 | 2011-04-14 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100210U CN202119589U (en) | 2011-04-14 | 2011-04-14 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119589U true CN202119589U (en) | 2012-01-18 |
Family
ID=45460645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201100210U Expired - Fee Related CN202119589U (en) | 2011-04-14 | 2011-04-14 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159326A (en) * | 2019-05-14 | 2019-08-23 | 北京朗德金燕自动化装备股份有限公司 | A kind of hydraulic support jack and its modularization cylinder bottom and cylinder bottom preparation process |
-
2011
- 2011-04-14 CN CN2011201100210U patent/CN202119589U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159326A (en) * | 2019-05-14 | 2019-08-23 | 北京朗德金燕自动化装备股份有限公司 | A kind of hydraulic support jack and its modularization cylinder bottom and cylinder bottom preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENGZHOU MINGDONG ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI MINGDONG ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20140211 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201505 JINSHAN, SHANGHAI TO: 312499 SHAOXING, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140211 Address after: 312499 Zhejiang Province, Shengzhou city Sanjiang Street Chung Chuan Village No. 458 Patentee after: Shengzhou Mingdong Electronic Technology Co., Ltd. Address before: 201505, No. 9299, Lane 73-74, Ting Wei Road, Shanghai, Jinshan District Patentee before: Shanghai Mind Electronic Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20160414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |