CN205140797U - Piezoelectricity switch of improvement structure - Google Patents
Piezoelectricity switch of improvement structure Download PDFInfo
- Publication number
- CN205140797U CN205140797U CN201520868407.6U CN201520868407U CN205140797U CN 205140797 U CN205140797 U CN 205140797U CN 201520868407 U CN201520868407 U CN 201520868407U CN 205140797 U CN205140797 U CN 205140797U
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- China
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- skeleton
- waterproof case
- substrate
- locating support
- base plate
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of the switch, refer in particular to a piezoelectricity switch of improvement structure, including waterproof case, skeleton, base plate and piezoceramics piece, being provided with the skeleton in the waterproof case inner chamber, having arranged the piezoceramics piece in the skeleton, the downside of piezoceramics piece is provided with the locating support, and the downside of locating support is provided with the base plate, and the base plate clamps in the skeleton lower part, the skeleton includes a roof, and the shaping has a plurality of barb spare under all side direction of roof, barb spare is held tightly in the week of base plate side, and the hook portion of barb spare supports in the base plate below, the inboard shaping of barb spare has a location sand grip, on the base plate shaping have with the draw -in groove is prevented changeing by location sand grip complex, the utility model discloses a sensitivity is high, and the practicality is good, adopts waterproof case's design, has realized the totally closed of internals, and is not only waterproof, can also prevent dust, effectively improves the life of components and parts, piezoelectricity ON -OFF control circuit can not divide the control of positive negative pole, convenient to use, safe and reliable.
Description
Technical field
The utility model belongs to switching technique field, refers in particular to a kind of structure improved Piezoelectric switches.
Background technology
No. CN2708476th, People's Republic of China's patent announcement discloses a kind of push switch, which disclose the insulating body forming fixed contact and the discoid moving contact being installed in insulating body, fixed contact is provided with the central fixed contact manifesting insulating body accepting hole, operationally, operator makes it to be formed with central fixed contact to contact conducting by pressing moving contact, thus realizes switch motion.
But, due to miniaturization structure and the manually-operated characteristic of this type of push switch, when external environment condition or switch self have dust or foreign material to enter contact area, then bringing cannot the hidden danger of conducting, in life, operator runs into this type of loose contact, often solving in the mode of enlarge active surface by increasing pressing force, hardly realizing that such action switch life and the impact of performance are fatal concerning flexible moving contact.
Given this, be necessary to provide a kind of push switch of new construction to overcome above-mentioned defect.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, safe and reliable, the novel Piezoelectric switches that can accurately control.
The purpose of this utility model is achieved in that
A kind of structure improved Piezoelectric switches, comprises waterproof case, skeleton, substrate and piezoelectric ceramic piece; Described waterproof case is the cylindrical shell of upper end closed, described skeleton is provided with in waterproof case inner chamber, be close to the inwall of waterproof case upper surface on the upside of skeleton, piezoelectric ceramic piece is furnished with in skeleton, the downside of piezoelectric ceramic piece is provided with locating support, the downside of locating support is provided with substrate, and substrate is installed on skeleton bottom;
The concrete structure that described substrate is installed on skeleton bottom is: skeleton comprises a top board, and all side direction compacted unders of top board have several barb member, and described barb member holds all sides at substrate tightly, and the hook portion of barb member is against below substrate; The inner side of described barb member forms a positioning convex strip, described substrate forms the anti-rotation draw-in groove coordinated with described positioning convex strip;
The upper surface of described waterproof case and skeleton all can strain indent under external force;
Described substrate forms inserted sheet and Piezoelectric switches control circuit, piezoelectric ceramic piece provides cut-in voltage for Piezoelectric switches control circuit.
All sides on described skeleton top form location grab; The inwall on described waterproof case top forms convex tendon, and described location grab coordinates with convex tendon is spacing and is fixed in waterproof case by skeleton.
Described locating support is elongated, and the upper surface of locating support is against on the downside of piezoelectric ceramic piece, and the lower surface of locating support is against on substrate.
The utility model gives prominence to compared to existing technology and useful technique effect is:
Of the present utility model highly sensitive, practicality is good, adopts the design of waterproof case, achieves the totally-enclosed of inner body, not only waterproof, can also be dust-proof, effectively improves the useful life of components and parts; Piezoelectric switches control circuit can control regardless of both positive and negative polarity, easy to use, safe and reliable.
Accompanying drawing explanation
Fig. 1 is exploded view of the present utility model.
Fig. 2 is the circuit diagram of Piezoelectric switches control circuit of the present utility model.
1-press section; 2-barb member; 3-convex tendon; 4-sealing ring; 5-hold-down nut; 6-waterproof case; 7-locates grab; 8-skeleton; 9-jacking block; 10-barb member; 11-positioning convex strip; 12-hook side; 13-piezoelectric ceramic piece; 14-locating support; 15-anti-rotation draw-in groove; 16-substrate; 17-anti-rotation draw-in groove; 18-inserted sheet; 19-inserted sheet.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
A kind of structure improved Piezoelectric switches, comprises waterproof case 6, skeleton 8, substrate 16 and piezoelectric ceramic piece 13; Described waterproof case 6 is the cylindrical shell of upper end closed, described skeleton 8 is provided with in waterproof case 6 inner chamber, be close to the inwall of waterproof case upper surface on the upside of skeleton 8, piezoelectric ceramic piece 13 is furnished with in skeleton 8, the downside of piezoelectric ceramic piece 13 is provided with locating support 14, the downside of locating support 14 is provided with substrate 16, and substrate 16 is installed on skeleton 8 bottom;
The concrete structure that described substrate 16 is installed on skeleton 8 bottom is: skeleton 8 comprises a top board, and all side direction compacted unders of top board have several barb member 2,10, and described barb member 2,10 holds all sides at substrate 16 tightly, barb member 2, and the hook portion of 10 is against below substrate; The inner side of described barb member 10 forms a positioning convex strip 11, described substrate forms the anti-rotation draw-in groove 17 coordinated with described positioning convex strip 11; The downside of top board is also provided with jacking block, and the lower end of jacking block is against substrate 16; This design makes substrate 16 can be very stable, is fixedly mounted on skeleton, and can not deflects.
The upper surface of described waterproof case 6 and skeleton 8 all can strain indent under external force; Outside force to press section 1 can make piezoelectric ceramic piece 13 be out of shape.
Described substrate 16 forms inserted sheet and Piezoelectric switches control circuit, piezoelectric ceramic piece 13 provides cut-in voltage for Piezoelectric switches control circuit.
All sides on described skeleton 8 top form location grab 7; The inwall on described waterproof case top forms convex tendon 3, and described location grab 7 coordinates with convex tendon 3 is spacing and is fixed in waterproof case 6 by skeleton 8.
Described locating support 14 is elongated, and the upper surface of locating support 14 is against on the downside of piezoelectric ceramic piece 13, and the lower surface of locating support 14 is against on substrate 16.
Described Piezoelectric switches control circuit is: piezoelectric ceramic circuit P1, resistance R1 and resistance R2 are linked in sequence formation one driving power loop; when there being pressed by external force switch surface; piezoelectric ceramic piece P1 flexural deformation will be driven to produce electromotive force; VA is made to produce the transient voltage being greater than 3V; VB is formed by the dividing potential drop of R2 and R1; resistance R2 is parallel with diode D1, and D1 is reverse protection diode, and the reverse voltage preventing piezoelectric ceramic piece from producing when bending bounce-back damages field effect transistor.VB uses to obtain metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 admittance (the wire extraction voltage between resistance R1 and resistance R2 is held to the G of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2).When input external voltage is M positive pole, during N negative pole, Q1 ON operation, forward current passes through from the diode-built-in of Q2, makes circuit form loop.Be M negative pole when input voltage is external voltage, during N positive pole, Q2 ON operation, reverse current passes through from Q1 diode-built-in, and (the D end of metal-oxide-semiconductor Q1 is connected with a wherein inserted sheet, the S end ground connection of metal-oxide-semiconductor Q1 to make circuit form loop, metal-oxide-semiconductor Q1 is parallel with diode D2, the D end of metal-oxide-semiconductor Q2 is connected with another inserted sheet, and the S of metal-oxide-semiconductor Q2 holds ground connection, and metal-oxide-semiconductor Q2 is parallel with diode D3).Metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 is N channel depletion type metal-oxide-semiconductor.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection range of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection range of the present utility model.
Claims (3)
1. a structure improved Piezoelectric switches, is characterized in that, comprises waterproof case, skeleton, substrate and piezoelectric ceramic piece; Described waterproof case is the cylindrical shell of upper end closed, described skeleton is provided with in waterproof case inner chamber, be close to the inwall of waterproof case upper surface on the upside of skeleton, piezoelectric ceramic piece is furnished with in skeleton, the downside of piezoelectric ceramic piece is provided with locating support, the downside of locating support is provided with substrate, and substrate is installed on skeleton bottom;
The concrete structure that described substrate is installed on skeleton bottom is: skeleton comprises a top board, and all side direction compacted unders of top board have several barb member, and described barb member holds all sides at substrate tightly, and the hook portion of barb member is against below substrate; The inner side of described barb member forms a positioning convex strip, described substrate forms the anti-rotation draw-in groove coordinated with described positioning convex strip;
The upper surface of described waterproof case and skeleton all can strain indent under external force;
Described substrate forms inserted sheet and Piezoelectric switches control circuit, piezoelectric ceramic piece provides cut-in voltage for Piezoelectric switches control circuit.
2. the structure improved Piezoelectric switches of one according to claim 1, is characterized in that, all sides on described skeleton top form location grab; The inwall on described waterproof case top forms convex tendon, and described location grab coordinates with convex tendon is spacing and is fixed in waterproof case by skeleton.
3. the structure improved Piezoelectric switches of one according to claim 1, is characterized in that, described locating support is elongated, and the upper surface of locating support is against on the downside of piezoelectric ceramic piece, and the lower surface of locating support is against on substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868407.6U CN205140797U (en) | 2015-11-03 | 2015-11-03 | Piezoelectricity switch of improvement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868407.6U CN205140797U (en) | 2015-11-03 | 2015-11-03 | Piezoelectricity switch of improvement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205140797U true CN205140797U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520868407.6U Expired - Fee Related CN205140797U (en) | 2015-11-03 | 2015-11-03 | Piezoelectricity switch of improvement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205140797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491698A (en) * | 2019-10-10 | 2019-11-22 | 上海华晟电器有限公司 | A kind of portable waterproof travel switch |
-
2015
- 2015-11-03 CN CN201520868407.6U patent/CN205140797U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491698A (en) * | 2019-10-10 | 2019-11-22 | 上海华晟电器有限公司 | A kind of portable waterproof travel switch |
| CN110491698B (en) * | 2019-10-10 | 2024-03-29 | 上海华晟电器有限公司 | Portable waterproof travel switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160406 Termination date: 20171103 |