CN203645575U - Cantilever beam piezoelectric motor having energy acquisition function - Google Patents
Cantilever beam piezoelectric motor having energy acquisition function Download PDFInfo
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- CN203645575U CN203645575U CN201320627295.6U CN201320627295U CN203645575U CN 203645575 U CN203645575 U CN 203645575U CN 201320627295 U CN201320627295 U CN 201320627295U CN 203645575 U CN203645575 U CN 203645575U
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Abstract
The utility model relates to a cantilever beam piezoelectric motor having an energy acquisition function belonging to the ultrasonic motor manufacturing technology field. The piezoelectric motor has a T-shaped structure formed by a piezoelectric oscillator A (1), a piezoelectric oscillator B (2), and a piezoelectric oscillator C (3). The piezoelectric oscillator A (1) is a vertical cantilever beam, and the bottom part is fixedly connected with a base (4) by a fastening mechanism, and the top end is provided with a mass block A (101). The piezoelectric oscillator B(2) is a horizontal cantilever beam, and the right end is fixedly disposed on the central position of the left end surface of the mass block A(101) of the piezoelectric oscillator A (1), and the left end is provided with a mass block B (201). The piezoelectric oscillator C(3) is a longitudinal cantilever beam, and the left end is fixedly disposed on the central position of the right end surface of the mass block A(101) of the piezoelectric oscillator A (1), and the right end is provided with a contact end (301). The piezoelectric oscillator C(3) is vertical and orthogonal to the piezoelectric oscillator A(1) and the piezoelectric oscillator B (2).
Description
Technical field
The utility model belongs to supersonic motor manufacturing technology field, is specifically related to a kind of cantilever beam piezoelectric motor with energy acquisition function, is a kind of collection Piezoelectric Driving and the integrated mechanism of piezo-electric generating.
Background technology
Piezoelectric motor is that a kind of inverse piezoelectric effect of utilizing piezo ceramic element makes piezoelectric vibrator produce deformation, and drives the rotor contacting with it to realize rotation or straight-line precision driver.It is widely used in the fields such as accurate apparatus, biologic medical, Aero-Space, auto industry.It is belt, tabular, shaft-like etc. that piezoelectric motor structure mainly comprises, all more complicated of these structural designs.Because the developing history of piezoelectric motor is shorter and the application prospect of this kind of motor, in the urgent need to the various piezoelectric motor of flexible structure to meet the application demand of different occasions.Cantilever beam, as the most basic a kind of mechanical structure, is used for making piezoelectric motor very easy.
Piezoelectric motor, in running, because the vibration deformation of piezoelectric vibrator makes structure energy consumption larger, causes motor performance to decline, and energy waste is serious.Utilize the direct piezoelectric effect of piezo ceramic element to gather the energy in piezoelectric motor running, the power conversion dissipating is become after direct voltage, realize to follow-up load electronic device power supply and there is larger using value.
There is more patent application to relate to piezoelectric energy collector both at home and abroad, typical piezoelectric energy collector structure is mainly cantilever beam single-chip or cantilever beam twin lamella piezoelectric vibrator, the resonance frequency band of these piezoelectric vibrator structures is narrow, is difficult to obtain higher energy conversion efficiency.For improving the energy conversion efficiency of piezoelectric energy collector, the effective band width of increase piezoelectric energy collector, occur at present forming energy collecting device by multiple piezoelectric vibrators, as, Chinese invention patent 201210088945.4 has proposed a kind of multidimensional energy collecting device of noncontact excitation, can realize the energy acquisition of any direction, low frequency and large amplitude; Chinese invention patent 201010601354.3 has proposed a kind of energy collecting device of multiple cantilever beam piezoelectric vibrators formation dandelion shapes, can realize the energy acquisition of extensional vibration and a horizontal direction; Chinese invention patent 200810021618.0 proposes a kind of cube-ball piezoelectric energy collector, etc.Conventionally only in the time that ambient vibration direction is vertical with cantilever beam piezoelectric vibrators horizontal neutral face, just can cause that cantilever beam produces flexural vibrations and produces electric energy, and for the energy of other direction of vibration, cantilever beam does not produce electric energy, this has just seriously reduced delivery efficiency and the scope of application of energy collecting device.In order to gather multidirectional energy, conventional method is to adopt multiple piezoelectric vibrators to be distributed on different direction of vibration, described in above-mentioned patent.There are several problems in existing multi-direction energy collecting device: 1. due to the increasing of piezoelectric vibrator number, cause structure and the manufacture craft more complicated of energy collecting device, subsequent conditioning circuit design is loaded down with trivial details; 2. the energy that flexural vibrations produce can only be gathered, the energy that twisting vibration produces can not be gathered.
Utility model content
The utility model proposes a kind of cantilever beam piezoelectric motor with energy acquisition function, is the integrated new device of a kind of Piezoelectric Driving and piezo-electric generating, can realize the functions such as accurate driving and vibrational energy collection.
The embodiment that the utility model adopts is: described piezoelectric motor forms T-shaped structure by piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3).Piezoelectric vibrator A (1), B (2) and C (3) are by metal substrate, piezoelectric chip and the mass composite cantilever structure forming that bonds.Piezoelectric vibrator A (1) is vertical cantilever, and its bottom is fixing by retention mechanism and basis (4), top installation quality piece A (101); Mass A (101) can change in the upright position of piezoelectric vibrator A (1).Piezoelectric vibrator B (2) is horizontal boom beam, and its right-hand member is fixed on piezoelectric vibrator A (1) top mass A (101) center, left side, and left end is provided with mass B (201).Piezoelectric vibrator C (3) is vertical cantilever beam, and its left end is fixed on piezoelectric vibrator A (1) top mass A (101) center, right side, and right-hand member is provided with contact head (301).Piezoelectric vibrator C (3) and piezoelectric vibrator A (1), piezoelectric vibrator B (2) perpendicular quadrature mutually.
In the utility model execution mode, in the time applying two sinusoidal voltages with 90 ° of frequency, same width and phase phasic differences to piezoelectric vibrator A (1) and C (3), piezoelectric vibrator A (1) produces left and right flexural vibrations, and piezoelectric vibrator C (3) produces forward and backward flexural vibrations; After the vibration of both generations of piezoelectric vibrator A (1) and piezoelectric vibrator C (3) is synthesized, make contact head (301) produce elliptical trajectory, and drive the rotor contacting with it to rotate or rectilinear motion; Simultaneously, piezoelectric vibrator B (2) does upper and lower flexural vibrations under the excitation of the left and right flexural vibrations of piezoelectric vibrator A (1), thereby make piezoelectric vibrator B (2) produce flexural deformation, this distortion impels piezoelectric vibrator B (2) to produce alternating voltage, realizes the acquisition function of vibrational energy.
In the utility model execution mode, in the time that piezoelectric vibrator A (1) and piezoelectric vibrator C (3) are not subject to external voltage excitation, three piezoelectric vibrators form T-shaped orthogonal vertical structure, the neutral surface of piezoelectric vibrator A (1) is vertical with x axle, the neutral surface of piezoelectric vibrator B (2) is vertical with y axle, and the neutral surface of piezoelectric vibrator C (3) is vertical with z axle.When x is made on basis (4), y, when the vibration of any one or more directions in tri-directions of z, capital produces the coupled vibrations of other several directions, impel piezoelectric vibrator A (1) to produce along x axle, piezoelectric vibrator B (2) and produce the flexural vibrations along y axle, piezoelectric vibrator C (3) along z axle, thereby realize x, y, the acquisition function of tri-oriented energies of z.
In the utility model execution mode, piezoelectric vibrator C (3) and piezoelectric vibrator A (1) orthogonal vertical, in the time that basis (4) produces around the axial twisting vibration of y, cause that piezoelectric vibrator A (1) produces the torsional deflection around y axle, this torsional deflection impels piezoelectric vibrator C (3) to produce the flexural vibrations along z axle, the final acquisition function of realizing basis (4) amount of torsional energy.
Brief description of the drawings
Fig. 1 is cantilever beam piezoelectric motor 3D solid figure in the utility model;
Fig. 2 is the front view of cantilever beam piezoelectric motor in the utility model;
Fig. 3 is the vertical view of cantilever beam piezoelectric motor in the utility model.
Embodiment
As shown in Figure 1, 2, 3, described piezoelectric motor forms T-shaped structure by piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3).Piezoelectric vibrator A (1) is vertical cantilever, and its bottom is fixing by retention mechanism and basis (4), top installation quality piece A (101); Mass A (101) can change in the upright position of piezoelectric vibrator A (1).Piezoelectric vibrator B (2) is horizontal boom beam, and its right-hand member is fixed on piezoelectric vibrator A (1) top mass A (101) center, left side, and left end is provided with mass B (201).Piezoelectric vibrator C (3) is vertical cantilever beam, and its left end is fixed on piezoelectric vibrator A (1) top mass A (101) center, right side, and right-hand member is provided with contact head (301).Piezoelectric vibrator C (3) and piezoelectric vibrator A (1), piezoelectric vibrator B (2) perpendicular quadrature mutually.
In order to gather efficiently the low frequency energy of basis (4), the upright position of the mass A (101) on piezoelectric vibrator A (1) top is adjustable, in the upright position of piezoelectric vibrator A (1), make the resonance frequency of piezoelectric vibrator A (1) consistent with the vibration frequency on basis (4) by quality of regulation piece A (101).
When applying two during with frequency, with the sinusoidal voltage of 90 ° of width and phase phasic differences to piezoelectric vibrator A (1) and C (3), piezoelectric vibrator A (1) produces left and right flexural vibrations, and piezoelectric vibrator C (3) produces forward and backward flexural vibrations; After the vibration of both generations of piezoelectric vibrator A (1) and piezoelectric vibrator C (3) is synthesized, make contact head (301) produce elliptical trajectory, and drive the rotor contacting with it to rotate or rectilinear motion; Simultaneously, piezoelectric vibrator B (2) does upper and lower flexural vibrations under the excitation of the left and right flexural vibrations of piezoelectric vibrator A (1), thereby make piezoelectric vibrator B (2) produce flexural deformation, this distortion impels piezoelectric vibrator B (2) to produce alternating voltage, realizes collection and the translation function of energy.
In the time that piezoelectric vibrator A (1) and piezoelectric vibrator C (3) are not subject to external voltage excitation, piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3) form T-shaped orthogonal vertical structure; The neutral surface of piezoelectric vibrator A (1) is vertical with x axle, the neutral surface of piezoelectric vibrator B (2) is vertical with y axle, the neutral surface of piezoelectric vibrator C (3) is vertical with z axle, when x is made on basis (4), y, when the vibration of any one or more directions in tri-directions of z, capital produces the coupled vibrations of other several directions, impel cantilever beam piezoelectric vibrators A (1) to produce along x axle, piezoelectric vibrator B (2) and produce the flexural vibrations along y axle, cantilever beam piezoelectric vibrators along z axle, thereby realize x, y, the acquisition function of tri-oriented energies of z.
Under nature, piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3) keep relative static conditions.In the time that basis is done along the double vibrations of x or y direction, the relative static conditions of piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3) is destroyed, piezoelectric vibrator A (1) is due to the effect of inertia of the vibration of foundation and top mass A (101) thereof, and cyclic bending vibration is done along x axle in its top; Piezoelectric vibrator B (2) is because the effect of inertia of its left end mass B (201) produces the flexural vibrations along y axle; Simultaneously, due to the coupling of vibration, the flexural vibrations along y axle that piezoelectric vibrator B (2) produces make piezoelectric vibrator A (1) produce vibration in the x-direction, and the flexural vibrations along y axle of piezoelectric vibrator A (1) also make piezoelectric vibrator B (2) produce vibration in the y-direction.
In the time that double vibrations is in the z-direction made on basis, piezoelectric vibrator C (3) is because the effect of inertia of its right-hand member contact head (301) produces the flexural vibrations that are parallel to z axle, and piezoelectric vibrator A (1) produces the twisting vibration around y axle; In the time that basis is done around the twisting vibration of y axle, piezoelectric vibrator C (3) is because the effect of inertia of its right-hand member mass (301) produces the flexural vibrations that are parallel to z axle.
Claims (1)
1. one kind has the cantilever beam piezoelectric motor of energy acquisition function, it is characterized in that: described piezoelectric motor forms T-shaped structure by piezoelectric vibrator A (1), piezoelectric vibrator B (2) and piezoelectric vibrator C (3), piezoelectric vibrator A (1) is vertical cantilever, its bottom is fixing by retention mechanism and basis (4), and mass A (101) is installed on its top; Piezoelectric vibrator B (2) is horizontal boom beam, and its right-hand member is fixed on piezoelectric vibrator A (1) top mass A (101) center, left side, its left end installation quality piece B (201); Piezoelectric vibrator C (3) is vertical cantilever beam, and its left end is fixed on piezoelectric vibrator A (1) top mass A (101) center, right side, and its right-hand member is provided with contact head (301); Piezoelectric vibrator C (3) and piezoelectric vibrator A (1), piezoelectric vibrator B (2) perpendicular quadrature mutually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320627295.6U CN203645575U (en) | 2013-10-11 | 2013-10-11 | Cantilever beam piezoelectric motor having energy acquisition function |
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| CN201320627295.6U CN203645575U (en) | 2013-10-11 | 2013-10-11 | Cantilever beam piezoelectric motor having energy acquisition function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578910A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Internal-resonance broadband vibration energy harvester of L-shaped beam structure |
| KR101762938B1 (en) * | 2016-04-25 | 2017-07-28 | 창원대학교 산학협력단 | Piezoelectric actuator of pie shape |
| CN109787512A (en) * | 2019-03-12 | 2019-05-21 | 哈尔滨工业大学 | A kind of vertical concatenation arrangement formula piezoelectric harvester increasing coupling |
| CN110518833A (en) * | 2019-09-04 | 2019-11-29 | 南京邮电大学 | A kind of multi-direction piezoelectric energy collector of square prism shape |
-
2013
- 2013-10-11 CN CN201320627295.6U patent/CN203645575U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578910A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Internal-resonance broadband vibration energy harvester of L-shaped beam structure |
| KR101762938B1 (en) * | 2016-04-25 | 2017-07-28 | 창원대학교 산학협력단 | Piezoelectric actuator of pie shape |
| CN109787512A (en) * | 2019-03-12 | 2019-05-21 | 哈尔滨工业大学 | A kind of vertical concatenation arrangement formula piezoelectric harvester increasing coupling |
| CN110518833A (en) * | 2019-09-04 | 2019-11-29 | 南京邮电大学 | A kind of multi-direction piezoelectric energy collector of square prism shape |
| CN110518833B (en) * | 2019-09-04 | 2021-09-28 | 南京邮电大学 | Regular quadrangular multi-direction piezoelectric energy collector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20151011 |
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| EXPY | Termination of patent right or utility model |