CN204578401U - A kind of prestressed girder piezoelectric vibrator - Google Patents
A kind of prestressed girder piezoelectric vibrator Download PDFInfo
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- CN204578401U CN204578401U CN201520347609.6U CN201520347609U CN204578401U CN 204578401 U CN204578401 U CN 204578401U CN 201520347609 U CN201520347609 U CN 201520347609U CN 204578401 U CN204578401 U CN 204578401U
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- main boom
- secondary cantilever
- mounting groove
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- piezoelectric ceramic
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Abstract
The utility model relates to a kind of prestressed girder piezoelectric vibrator, comprise: elastic base plate, piezoelectric ceramic and pedestal, elastic base plate comprises cantilever bonding pad, at least one main boom and i.e. the first secondary cantilever and the second secondary cantilever of at least two secondary cantilevers, first secondary cantilever is identical with the second secondary size cantilever and be arranged symmetrically with about axis, cantilever bonding pad, main boom and the homonymy of secondary cantilever interlaced arrangement in cantilever bonding pad, piezoelectric ceramic is arranged in main boom on the surface, pedestal comprises bottom base and top base, bottom base comprises main boom mounting groove and secondary cantilever mounting groove, main boom is arranged in main boom mounting groove, secondary cantilever configuration is in secondary cantilever mounting groove, bottom base layout corresponding with top base, the utility model is widely used in milli machine and precision optical machinery, compared to conventional cantilever beam piezoelectric vibrator, amplitude is larger, resonance frequency range is larger.
Description
Technical field
The utility model belongs to milli machine and precision optical machinery field, is specifically related to a kind of prestressed girder piezoelectric vibrator.
Background technology
Piezoelectric vibrator is a kind of actuator be made up of piezoelectric, under alternating voltage effect, reciprocal flexural deformation can occur.Utilize the actuator that piezo technology is formed, be widely used in milli machine and precision optical machinery field.Traditional single cantilever beam piezoelectric vibrator, is bent to form displacement power output by the single order of cantilever, and its motion is fairly simple, and vibration mode is more single, there is power output and output displacement is less, amplitude and the little problem of frequency range.
Summary of the invention
In order to solve current piezoelectric vibrator Problems existing, propose a kind of prestressed girder piezoelectric vibrator, this piezoelectric vibrator comprises main boom, secondary cantilever and pedestal, by arranging that the position of cantilever produces prestressing force and predeformation, when piezoelectric vibrator energising vibration, the concave and convex direction of main boom produces and changes, the concave and convex direction of secondary cantilever is consistent with main boom, this piezoelectric vibrator compares with conventional piezoelectric oscillator, has resonance frequency range large, the advantage that during vibration, amplitude is large.
To achieve these goals, the utility model is by the following technical solutions:
A kind of prestressed girder piezoelectric vibrator, comprise elastic base plate, piezoelectric ceramic and pedestal, it is characterized in that: elastic base plate is sheet type structure, described elastic base plate comprises cantilever bonding pad, at least one main boom and i.e. the first secondary cantilever and the second secondary cantilever of at least two secondary cantilevers, described first secondary cantilever is identical with the second secondary size cantilever and be arranged symmetrically with about axis, cantilever bonding pad, described main boom and the homonymy of secondary cantilever interlaced arrangement in described cantilever bonding pad, described pedestal comprises bottom base and top base, upper surface vertical with leading flank in described bottom base is furnished with deep gouge, i.e. main boom mounting groove and secondary cantilever mounting groove, described secondary cantilever mounting groove comprises the first secondary cantilever mounting groove and the second secondary cantilever mounting groove, described main boom mounting groove and secondary cantilever mounting groove and the through and interlaced arrangement of described leading flank, described first secondary cantilever mounting groove and the second secondary cantilever mounting groove measure-alike and be arranged symmetrically with about bottom base axis, the spacing of described first secondary cantilever mounting groove and the second secondary cantilever mounting groove is equal with the spacing of described first secondary cantilever and the second secondary cantilever, described secondary cantilever mounting groove is rectangle and width is equal with described secondary boom width, described main boom mounting groove is rectangle and width is equal with described main boom width, in described secondary cantilever mounting groove, the side parallel with described leading flank is called secondary cantilever locating surface, in described main boom mounting groove, the side parallel with described leading flank is called main boom locating surface, distance between described main boom locating surface and secondary cantilever locating surface is not equal to the length difference of described main boom and secondary cantilever, form prestressing force and predeformation, described main boom is arranged in described main boom mounting groove, main boom protrude end face and main boom locating surface coordinate, the lower surface of described main boom is connected with the bottom surface of main boom mounting groove, described secondary cantilever configuration is in secondary cantilever mounting groove, secondary cantilever protrude end face and secondary cantilever locating surface coordinate, and the lower surface of described secondary cantilever is connected with the bottom surface of secondary cantilever mounting groove, described top base is sheet type structure, and the upper surface of described top base is rectangle and wherein the spacing of first group of opposite side is greater than the width of described elastic base plate, one of described top base upper surface second group of opposite side side at place and the leading flank alignment of bottom base, described piezoelectric ceramic is sheet type structure, described piezoelectric ceramic is arranged in described main boom on the surface, or be arranged on secondary cantilever surfaces, or be arranged on described main boom and secondary cantilever surfaces simultaneously, piezoelectric ceramic described in a slice and cantilever form single-chip structure, or arrange that another sheet piezoelectric ceramic forms double wafer structure at the opposite side of cantilever simultaneously.
During work, cyclic bending distortion is there is in piezoelectric vibrator under the effect of alternating voltage, piezoelectric vibrator moves to upper extreme position, after the positive and negative change of voltage, can move to lower limit position at the acting in conjunction lower piezoelectric oscillator of prestressing force and piezoelectric effect, the concave and convex direction of cantilever changes, due to the acting in conjunction of main boom and secondary cantilever, the amplitude of piezoelectric vibrator increases, and resonance frequency range increases.
Accompanying drawing explanation
Fig. 1 is a kind of prestressed girder piezoelectric vibrator of the utility model assembly relation schematic diagram.
Fig. 2 is the prestressed girder piezoelectric vibrator axonometric drawing of the utility model cantilever when not fixing.
Fig. 3 is a kind of prestressed girder piezoelectric vibrator of the utility model end view.
Fig. 4 is the axonometric drawing of the utility model bottom base.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of prestressed girder piezoelectric vibrator of the utility model comprises elastic base plate 1, piezoelectric ceramic 2 and pedestal 3, it is characterized in that:
Described elastic base plate 1 is sheet type structure, described elastic base plate 1 comprises cantilever bonding pad 13, at least one main boom 11 and i.e. the first secondary cantilever 121 and the second secondary cantilever 122 of at least two secondary cantilevers 12, described first secondary cantilever 121 and the second secondary cantilever 122 measure-alike and be arranged symmetrically with about axis, cantilever bonding pad 131, described main boom 11 and the homonymy of secondary cantilever 12 interlaced arrangement in described cantilever bonding pad 13, described pedestal 3 comprises bottom base 31 and top base 32, in described bottom base 31, the upper surface vertical with leading flank 315 is furnished with deep gouge, i.e. main boom mounting groove 312 and secondary cantilever mounting groove 311, described secondary cantilever mounting groove 311 comprises the first secondary cantilever mounting groove 3111 and the second secondary cantilever mounting groove 3112, described main boom mounting groove 312 and secondary cantilever mounting groove 311 be through and interlaced arrangement with described leading flank 315, described first secondary cantilever mounting groove 3111 and the second secondary cantilever mounting groove 3112 measure-alike and be arranged symmetrically with about bottom base axis 316, the spacing of described first secondary cantilever mounting groove 3111 and the second secondary cantilever mounting groove 3112 is equal with the spacing of described first secondary cantilever 121 and the second secondary cantilever 122, described secondary cantilever mounting groove 311 is rectangle and width is equal with described secondary cantilever 12 width, described main boom mounting groove 312 is rectangle and width is equal with described main boom 11 width, in described secondary cantilever mounting groove 311, the side parallel with described leading flank 315 is called secondary cantilever locating surface 314, side parallel with described leading flank 315 in described main boom mounting groove 312 is called main boom locating surface 313, distance between described main boom locating surface 313 and secondary cantilever locating surface 314 is not equal to the length difference of described main boom 11 and secondary cantilever 12, form prestressing force and predeformation, described main boom 11 welding is arranged in described main boom mounting groove 312, main boom protrude end face 111 and main boom locating surface 313 coordinate, the lower surface of described main boom 11 is connected with the bottom surface of main boom mounting groove 312, described secondary cantilever 12 welding is arranged in secondary cantilever mounting groove 311, secondary cantilever protrude end face 123 and secondary cantilever locating surface 314 coordinate, and the lower surface of described secondary cantilever 12 is connected with the bottom surface of secondary cantilever mounting groove 311, described top base 32 is sheet type structure, the upper surface of described top base 32 is rectangle and wherein the spacing of first group of opposite side is greater than the width of described elastic base plate 1, the side at one of described top base 32 upper surface second group of opposite side place and leading flank 315 alignment of bottom base 31, described piezoelectric ceramic 2 is sheet type structure, and described piezoelectric ceramic 2 is bonding is arranged in described main boom 11 on the surface.
Claims (3)
1. a prestressed girder piezoelectric vibrator, comprise elastic base plate (1), piezoelectric ceramic (2) and pedestal (3), it is characterized in that: described elastic base plate (1) is sheet type structure, described elastic base plate (1) comprises cantilever bonding pad (13), at least one main boom (11) and at least two secondary cantilevers (12) i.e. the first secondary cantilever (121) and the second secondary cantilever (122), described first secondary cantilever (121) and the second secondary cantilever (122) measure-alike and be arranged symmetrically with about axis, cantilever bonding pad (131), described main boom (11) and the homonymy of secondary cantilever (12) interlaced arrangement described cantilever bonding pad (13), described pedestal (3) comprises bottom base (31) and top base (32), upper surface vertical with leading flank (315) in described bottom base (31) is furnished with deep gouge, i.e. main boom mounting groove (312) and secondary cantilever mounting groove (311), described secondary cantilever mounting groove (311) comprises the first secondary cantilever mounting groove (3111) and the second secondary cantilever mounting groove (3112), described main boom mounting groove (312) and secondary cantilever mounting groove (311) be through and interlaced arrangement with described leading flank (315), described first secondary cantilever mounting groove (3111) and the second secondary cantilever mounting groove (3112) measure-alike and be arranged symmetrically with about bottom base axis (316), the spacing of described first secondary cantilever mounting groove (3111) and the second secondary cantilever mounting groove (3112) is equal with the spacing of described first secondary cantilever (121) and the second secondary cantilever (122), described secondary cantilever mounting groove (311) is for rectangle and width is equal with described secondary cantilever (12) width, described main boom mounting groove (312) is for rectangle and width is equal with described main boom (11) width, in described secondary cantilever mounting groove (311), the side parallel with described leading flank (315) is called secondary cantilever locating surface (314), in described main boom mounting groove (312), the side parallel with described leading flank (315) is called main boom locating surface (313), distance between described main boom locating surface (313) and secondary cantilever locating surface (314) is not equal to the length difference of described main boom (11) and secondary cantilever (12), described main boom (11) is arranged in described main boom mounting groove (312), main boom protrude end face (111) and main boom locating surface (313) coordinate, the lower surface of described main boom (11) is connected with the bottom surface of main boom mounting groove (312), described secondary cantilever (12) is arranged in secondary cantilever mounting groove (311), secondary cantilever protrude end face (123) and secondary cantilever locating surface (314) coordinate, and the lower surface of described secondary cantilever (12) is connected with the bottom surface of secondary cantilever mounting groove (311), described top base (32) is sheet type structure, the upper surface of described top base (32) is rectangle and wherein the spacing of first group of opposite side is greater than the width of described elastic base plate (1), the side at one of described top base (32) upper surface second group of opposite side place and leading flank (315) alignment of bottom base (31), described piezoelectric ceramic (2) is sheet type structure, and described piezoelectric ceramic (2) is arranged in described main boom (11) on the surface.
2. a kind of prestressed girder piezoelectric vibrator according to claim 1, it is characterized in that: described piezoelectric ceramic (2) can be arranged in described main boom (11) on the surface, or be arranged in described first secondary cantilever (121) and the second secondary cantilever (122) on the surface, or be arranged in described main boom (11), the first secondary cantilever (121) and the second secondary cantilever (122) on the surface simultaneously.
3. a kind of prestressed girder piezoelectric vibrator according to claim 1, it is characterized in that: described piezoelectric ceramic (2) and the arrangement of main boom (11) adopt the single-chip structure of a slice piezoelectric ceramic (2) and main boom (11) bonding formation, or form double wafer structure second bonding second piezoelectric ceramic (2) of described main boom (11) simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347609.6U CN204578401U (en) | 2015-05-26 | 2015-05-26 | A kind of prestressed girder piezoelectric vibrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520347609.6U CN204578401U (en) | 2015-05-26 | 2015-05-26 | A kind of prestressed girder piezoelectric vibrator |
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| CN204578401U true CN204578401U (en) | 2015-08-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821737A (en) * | 2015-05-26 | 2015-08-05 | 吉林大学 | Pre-stressed beam piezoelectric vibrator |
| CN111756273A (en) * | 2020-06-01 | 2020-10-09 | 上海大学 | Slot type piezoelectric energy collector for collecting human body kinetic energy |
-
2015
- 2015-05-26 CN CN201520347609.6U patent/CN204578401U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821737A (en) * | 2015-05-26 | 2015-08-05 | 吉林大学 | Pre-stressed beam piezoelectric vibrator |
| CN111756273A (en) * | 2020-06-01 | 2020-10-09 | 上海大学 | Slot type piezoelectric energy collector for collecting human body kinetic energy |
| CN111756273B (en) * | 2020-06-01 | 2024-05-14 | 上海大学 | Slotted piezoelectric energy collector for collecting kinetic energy of human body |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |