CN2575685Y - Metal base composite light guide fibre - Google Patents
Metal base composite light guide fibre Download PDFInfo
- Publication number
- CN2575685Y CN2575685Y CN 02249585 CN02249585U CN2575685Y CN 2575685 Y CN2575685 Y CN 2575685Y CN 02249585 CN02249585 CN 02249585 CN 02249585 U CN02249585 U CN 02249585U CN 2575685 Y CN2575685 Y CN 2575685Y
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- CN
- China
- Prior art keywords
- metal cap
- cavity
- ultrasonic sensor
- inwall
- groove
- 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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- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model relates to an ultrasonic sensor, which belongs to the technical field of the positioning of existence detection adopting acoustic reflection or reradiation. The utility model is composed of a metal cover and a piezoelectric element, wherein, a hollow cavity is arranged on the cover, and two corresponding grooves are arranged on the inner wall of the metal cover. The depth of the grooves is lower than the depth of the hollow cavity, and the grooves form steps on the inner wall of the metal cover. The steps are higher than the bottom surface of the hollow cavity of the metal cover, and the piezoelectric element is arranged on the bottom surface of the hollow cavity. The processing and the manufacture of the utility model are simple, and the processing amount is reduced. The utility model is the ultrasonic sensor with good service performance, small size and high anisotropic radiation and detection characteristics.
Description
Technical field the utility model ultrasonic sensor belongs to the reflection or the reradiative location of adopting sound wave or has detection range, particularly relate to a kind ofly be used to detect, the ultrasonic sensor of Measuring Object distance.
Background technology is existing a kind of ultrasonic sensor at present, radiation of its discontinuity and reception ultrasonic pulse, and detection is measured and the distance of object, it is by metal cap, one cavity is arranged on the cover, on the bottom surface of cavity, piezoelectric element is set, acoustical material covers piezoelectric element, piezoelectric element connects capacitor by lead, and capacitor is connected with cable, and insulating resin or silica gel are inserted the cavity sealing of metal cap, on the ultrasonic sensor of small size, because the structure difference of cavity influences hyperacoustic radiation scope and sensing range, makes the anisotropy of ultrasonic sensor poor.
The purpose of this utility model is to avoid the deficiencies in the prior art part and provides a kind of and have anisotropic radiation and detect the ultrasonic sensor of characteristic for horizontal direction and vertical direction.
Utility model content the utility model is realized by following measure, it is by metal cap, piezoelectric element is formed, one cavity is arranged on the cover, corresponding two grooves are arranged on the inwall of metal cap, the degree of depth of groove is lower than the cavity depth of metal cap, groove forms step on the inwall of metal cap, step exceeds the bottom surface of metal cap cavity, the wall thickness of metal cap fluting direction is smaller or equal to the thickness of metal cap bottom, during use, on the bottom surface of cavity piezoelectric element is set, acoustical material covers piezoelectric element, installing plate connects the inwall of piezoelectric element and metal cap by lead, installing plate is connected with cable, and insulating resin or silica gel are inserted the cavity sealing of metal cap, and sensor in the horizontal direction and have the height anisotropic radiation between the vertical direction and detect characteristic.
The cavity of the utility model metal cap can be cylindrical, corresponding two grooves are arranged on the inwall of metal cap, and the degree of depth of groove is lower than the cavity depth of metal cap, and groove forms step on the inwall of metal cap, step exceeds the bottom surface of metal cap cavity, on the bottom surface of cavity piezoelectric element is set.
The cavity of the utility model metal cap can be an elliptical cylinder-shape, corresponding two grooves are arranged on the inwall of metal cap, groove is arranged on the vertical of ellipse, also can be arranged on ellipse transversely, the degree of depth of groove is lower than the cavity depth of metal cap, and groove forms step on the inwall of metal cap, and step exceeds the bottom surface of metal cap cavity, on the bottom surface of cavity piezoelectric element is set, the minimum place wall thickness of metal cap fluting direction is less than or equal to the thickness of metal cap bottom.
The cavity of the utility model metal cap can be square or rectangle, has corresponding two grooves on the inwall of metal cap, groove be arranged on square or rectangular vertically, also can be arranged on square or transversely rectangular,
The utility model has corresponding two grooves on the inwall of metal cap, the shape of groove can be an arc-shaped slot, and corresponding two arc-shaped slots are arranged on the inwall of metal cap.
The utility model has corresponding two grooves on the inwall of metal cap, the bottom surface of groove is the plane, and the both sides of groove are circular shapes.
The utility model has corresponding two grooves on the inwall of metal cap, the bottom surface of groove is the plane, and the both sides of groove are straight lines.
The utility model has corresponding two grooves on the inwall of metal cap, groove be shaped as circular arc.
The utility model has solved the anisotropic problem of ultrasonic sensor well, and processing and fabricating is simple, reduces processing capacity, is that a kind of usability is good, and volume is little, has the ultrasonic sensor of height anisotropic radiation and detection characteristic.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is structural representations of the utility model metal cap.
Accompanying drawing 3 is A-A sectional views of accompanying drawing 2.
Accompanying drawing 4 is B-B sectional views of accompanying drawing 2.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is by metal cap 1, piezoelectric element 5 is formed, one cavity 3 is arranged on the cover, the cavity of metal cap is cylindrical, corresponding two grooves 2 are arranged on the cylinder shape inner wall of metal cap, the degree of depth of groove is lower than the cavity depth of metal cap, groove forms step 4 on the inwall of metal cap, step exceeds the bottom surface 6 of metal cap cavity, the wall thickness a of minimum place of metal cap fluting direction is less than or equal to the thickness b of metal cap bottom, and piezoelectric element 5 is set on the bottom surface of cavity, and acoustical material covers piezoelectric element, installing plate 7 connects the inwall of piezoelectric element and metal cap by lead, installing plate is connected with cable 8, and insulating resin is inserted the cavity sealing of metal cap, and sensor in the horizontal direction and have the height anisotropic radiation between the vertical direction and detect characteristic.
Shown in accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, the utility model has a cylindrical cavity 3 on metal cap 1, corresponding two grooves 2 are arranged on the inwall of metal cap, the bottom surface of groove is the plane, the both sides of groove are circular shapes, and the degree of depth of groove is lower than the cavity depth of metal cap 1, and groove forms step 4 on the inwall of metal cap, step exceeds the bottom surface 6 of metal cap cavity, and piezoelectric element 5 is set on the bottom surface of cavity.
Claims (10)
1, a kind of ultrasonic sensor, it is by metal cap, piezoelectric element is formed, one cavity is arranged on the cover, installing plate connects the inwall of piezoelectric element and metal cap by lead, installing plate is connected with cable, acoustical material covers piezoelectric element, insulating resin or silica gel are inserted the cavity sealing of metal cap, it is characterized in that having on the inwall of metal cap corresponding two grooves, and the degree of depth of groove is lower than the cavity depth of metal cap, groove forms step on the inwall of metal cap, step exceeds the bottom surface of metal cap cavity, on the bottom surface of cavity piezoelectric element is set, and the minimum place wall thickness of metal cap fluting direction is less than or equal to the thickness of metal cap bottom.
2, ultrasonic sensor according to claim 1, the cavity that it is characterized in that metal cap is cylindrical.
3, ultrasonic sensor according to claim 1, the cavity that it is characterized in that metal cap is an elliptical cylinder-shape.
4, ultrasonic sensor according to claim 1, the cavity that it is characterized in that metal cap is square or rectangle.
5, ultrasonic sensor according to claim 3 is characterized in that having corresponding two grooves on the inwall of metal cap, groove is arranged on the vertical of ellipse.
6, ultrasonic sensor according to claim 3 is characterized in that having corresponding two grooves on the inwall of metal cap, be arranged on the horizontal of ellipse.
7, ultrasonic sensor according to claim 1 is characterized in that having corresponding two grooves on the inwall of metal cap, the shape of groove is an arc-shaped slot.
8, ultrasonic sensor according to claim 1 is characterized in that on the inwall of metal cap corresponding two grooves being arranged, and the bottom surface of groove is the plane, and the both sides of groove are circular shapes.
9, ultrasonic sensor according to claim 1 is characterized in that on the inwall of metal cap corresponding two grooves being arranged, and the bottom surface of groove is the plane, and the both sides of groove are straight lines.
10, ultrasonic sensor according to claim 1 is characterized in that on the inwall of metal cap corresponding two grooves being arranged, groove be shaped as circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249585 CN2575685Y (en) | 2002-11-07 | 2002-11-07 | Metal base composite light guide fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249585 CN2575685Y (en) | 2002-11-07 | 2002-11-07 | Metal base composite light guide fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575685Y true CN2575685Y (en) | 2003-09-24 |
Family
ID=33719984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249585 Expired - Fee Related CN2575685Y (en) | 2002-11-07 | 2002-11-07 | Metal base composite light guide fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575685Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117105A (en) * | 2010-01-06 | 2011-07-06 | 苹果公司 | Handheld computing device |
| CN102768355A (en) * | 2011-05-05 | 2012-11-07 | 同致电子企业股份有限公司 | Ultrasonic sensor |
-
2002
- 2002-11-07 CN CN 02249585 patent/CN2575685Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117105A (en) * | 2010-01-06 | 2011-07-06 | 苹果公司 | Handheld computing device |
| CN102768355A (en) * | 2011-05-05 | 2012-11-07 | 同致电子企业股份有限公司 | Ultrasonic sensor |
| CN102768355B (en) * | 2011-05-05 | 2014-06-25 | 同致电子企业股份有限公司 | Ultrasonic sensor |
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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: 20030924 Termination date: 20101107 |