CN202524321U - Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam - Google Patents

Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam Download PDF

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Publication number
CN202524321U
CN202524321U CN2012201261414U CN201220126141U CN202524321U CN 202524321 U CN202524321 U CN 202524321U CN 2012201261414 U CN2012201261414 U CN 2012201261414U CN 201220126141 U CN201220126141 U CN 201220126141U CN 202524321 U CN202524321 U CN 202524321U
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China
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magnet
group
piezoelectric vibrator
power generation
piezoelectric
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Expired - Fee Related
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CN2012201261414U
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Chinese (zh)
Inventor
王淑云
阚君武
孙明礼
程光明
曾平
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Zhejiang Normal University CJNU
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Zhejiang Normal University CJNU
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Abstract

The utility model relates to a vertical-vibration horizontal-swinging type power generation device of a low-frequency large-amplitude piezoelectric cantilever beam, which belongs to the technical field of new energy and power generation. A casing is installed on a base through screws, and a first group of magnets and a second group of magnets are evenly bonded to the inner wall of the casing. A first spring, an inertia block and a second spring are sequentially sleeved on a pin roll from top to bottom. One end of a piezoelectric vibrator is connected with a magnet in bonding mode, and the other end of the piezoelectric vibrator is inserted in a direct groove of the inertia block. The first group of magnets and the second group of magnets, and the magnet installed on the piezoelectric vibrator are installed with the same poles close to each other. The power generation device utilizes the environment to vibrate vertically, so as to enable the piezoelectric vibrator of the cantilever beam to swing horizontally in the horizontal level. Meanwhile, the power generation device is capable of achieving low-frequency large-amplitude vibration energy recuperation and is high in reliability.

Description

Longitudinal vibration yaw formula low frequency large amplitude piezoelectric cantilever TRT
Technical field
The utility model belongs to new forms of energy and technical field of power generation, is specifically related to longitudinal vibration, yaw formula piezoelectric cantilever TRT, is used for the extensional vibration energy recuperation of low frequency, large amplitude.
Background technology
For the self-powered demand that satisfies micropower electronic product and microminiature remote sensing and heeling-in monitoring system, avoid a large amount of waste battery contaminated environment, become forward position both domestic and external focus based on the research of the microminiature TRT of principles such as electromagnetism, static, thermoelectricity, electric capacity and piezoelectricity.All kinds of TRTs all have advantage and the suitable application area of himself; That the advantage of piezoelectric type vibration generating device is is simple in structure, be easy to make and implementation structure on microminiaturization and integrated etc.; So the scope of application is wider, progressively is used for fields such as transducer, health monitoring and wireless transmitting system at present.
Utilizing piezoelectric to reclaim aspect the environmental energy generating, more patent application is all arranged both at home and abroad, wherein mostly all be recovered as application target with vibrational energy.As everyone knows, for the oscillatory type piezoelectric generator, only, the piezoelectric vibrator natural frequency can reach higher generating capacity and energy conversion efficiency when equating with the ambient vibration frequency.But because of the resonance frequency of piezoelectric vibrator self higher usually; Wherein the resonance frequency of piezoelectric cantilever reach hundreds of hertz, circular piezoelectric oscillator resonance frequency up to several KHzs; And the ambient vibration frequency is generally tens hertz even only have several hertz, and it is not remarkable therefore directly to utilize piezoelectric vibrator to collect the effect of environment vibrational energy.For reducing the natural frequency of piezoelectric vibrator; The method that adopts at present is in the cantilever beam piezoelectric vibrators end or the lumped mass piece is installed in circular piezoelectric oscillator center; Its drawback is to work as the mass installed when big; Even piezoelectric vibrator has just produced moderate finite deformation when non operating state, in the work very easily because of being out of shape excessive the damage.The deformability that its reason is that the piezoceramic material quality is very crisp, can bear is extremely limited, even long its safe deflection of cantilever beam piezoelectric vibrators also is merely the millimeter level.In actual life; Conventional ambient vibration is mainly brought out by all kinds of vehicles operations, human motion; This type of vibration has the double grading of low frequency and large amplitude concurrently, and wherein the extensional vibration amplitude of the vehicles such as automobile, bicycle can reach several centimetres even tens centimetres sometimes.It is thus clear that existing portable vibration TRT is difficult in reality, obtain to use widely.
Summary of the invention
The utility model provides a kind of longitudinal vibration yaw formula low frequency large amplitude piezoelectric cantilever TRT; Only can be used for to solve existing piezoelectricity oscillating generating set that amplitude is less, frequency is than the problem that the vibrational energy under the high ambient reclaims, be used for that all kinds of vehicles jolt and conventional environment such as human motion under low frequency, large-amplitude vibration energy recuperation.
The technical scheme that the utility model adopts is: housing is fixedly connected with base through screw; Evenly be bonded with first group of magnet and second group of magnet on the inwall of said housing; First group of magnet and second group of magnet is not on sustained height; Through screw bearing pin is installed on the said base, the top crimping of the other end of bearing pin and housing is socketed with first spring, inertial mass and second spring from top to bottom successively on said bearing pin; A cannelure that jump ring is installed is respectively established at the two ends of said inertial mass, also is provided with the straight trough that is used to install piezoelectric vibrator on the inertial mass; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and an end of said metal substrate is bonded with magnet, the other end and inserts in the straight trough of inertial mass and through jump ring and fix; Be installed in first group of magnet and second group of magnet and the like pole that is installed on the magnet on the piezoelectric vibrator on the housing near installation.
Under nature, inertial mass is in the balance inactive state under the effect of first spring and second spring, and piezoelectric vibrator and the magnet that is installed on the piezoelectric vibrator end also remain static.When extensional vibration in the housing environment encourages; Inertial mass is along the bearing pin up-down vibration; The distance that causes the magnet of piezoelectric vibrator end and be installed between first group and the second group magnet of magnet on the housing changes, when first group of magnet on magnet on the piezoelectric vibrator and the housing and second group of magnet successively near the time, will produce repulsive force between like pole; Thereby make piezoelectric vibrator produce transverse curvature distortion alternately, and convert mechanical energy to electric energy.
The characteristics and the advantage of the utility model are: the flexural vibrations direction of cantilever beam piezoelectric vibrators vertical with environment extensional vibration direction; The deflection of piezoelectric vibrator is the influence of magnetic field force induced size only; Reason environment pitch amplitude is excessive and damage, and reliability is high; The action of gravity of inertial mass self is on spring; The size of its quality does not have direct influence to the vibration characteristics of piezoelectric vibrator, and natural frequency, the realization low-frequency vibration energy that can adopt big mass inertia piece and low rigid spring to reduce TRT reclaim;
Description of drawings
Fig. 1 (a) is the structure cut-away view under the TRT inactive state in preferred embodiment of the utility model;
Fig. 1 (b) is the A-A cut-away view of Fig. 1 (a);
Fig. 2 is that each magnet pole configuration of TRT concerns sketch map in preferred embodiment of the utility model;
Fig. 3 (a) is the structure cut-away view of inertial mass in preferred embodiment of the utility model;
Fig. 3 (b) is the vertical view of Fig. 3 (a);
Fig. 4 is the structural representation of piezoelectric vibrator metal substrate in preferred embodiment of the utility model;
Fig. 5 (a) is the structure cut-away view when inertial mass moves upward in preferred embodiment of the utility model;
Fig. 5 (b) is the profile of Fig. 5 (a);
Fig. 6 (a) is the structure cut-away view when inertial mass moves downward in preferred embodiment of the utility model;
Fig. 6 (b) is the profile of Fig. 6 (a).
Embodiment
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, housing 2 is mounted on the base 1 through screw, evenly is bonded with first group of magnet 3 and 4, the first groups of magnet 3 of second group of magnet and second group of magnet 4 on the inwall of said housing 2 not on sustained height; Through screw bearing pin 5 is installed on the said base 1, the top crimping of the other end of bearing pin 5 and housing 2; On said bearing pin 5, be socketed with first spring 6, inertial mass 7 and second spring 8 from top to bottom successively; A cannelure 701 is respectively established at the two ends of said inertial mass 7, also is provided with the straight trough 702 that is used to install piezoelectric vibrator 9 on the inertial mass 7; Said piezoelectric vibrator 9 is by metal substrate 901 and piezoelectric chip 902 bonding forming, and an end of said metal substrate 901 is bonded with magnet 11, the other end inserts in the straight trough 702 of inertial mass 7, and fixing through jump ring 10; Be installed in first group of magnet 3 on the housing 2, second group of magnet 4 and the like pole that is installed on the magnet 11 on the piezoelectric vibrator 10 near installation, the S utmost point of S and second group of magnet 4 of the N utmost point, magnet 11 that is about to the N utmost point and first group of magnet 3 of magnet 11 is near installation.
Under nature, inertial mass 7 is in the balance inactive state under the effect of first spring 6 and second spring 8, and piezoelectric vibrator 9 and the magnet 11 that is installed on piezoelectric vibrator 9 ends also remain static.When extensional vibration in the housing environment encourages; Inertial mass 7 is up and down reciprocatingly vibrated along bearing pin 5; The first group of magnet 3 and the distance between second group of magnet 4 that cause the magnet 11 of piezoelectric vibrator 9 ends and be installed on the housing change, when first group of magnet 3 on the magnet on the piezoelectric vibrator 11 and the housing and second group of magnet 4 successively near the time, will produce repulsive force between like pole; Thereby make piezoelectric vibrator 9 produce transverse curvature distortion alternately, and convert mechanical energy to electric energy.
Shown in Fig. 5 (a), Fig. 5 (b); When housing 1 when the home position moves downward; Inertial mass 7 lags behind because of the action response that receives himself inertia force, and first spring 6 is compressed, second spring 8 elongation thereby make, and the distance between magnet 11 and the second group of magnet 4 shortens gradually; Magnetic field repulsive force therebetween increases gradually, and the magnetic field force that increases gradually forces piezoelectric vibrator 9 to the direction flexural deformation away from second group of magnet 4.Shown in Fig. 6 (a), Fig. 6 (b); After the direction of vibration of housing 1 changes; Promptly when move in the top; Second of the inertia force of inertial mass 7 makes that spring 8 is compressed, first spring 6 elongations, magnet 11 gradually away from second group of magnet 4, near first group of magnet 3, thereby make magnet 11 and field repulsive force between second group of magnet 4 reduce gradually, and first group of magnet 3 between the repulsive force increase; Piezoelectric vibrator 9 under the effect of self elastic force and first group of magnet 3 repulsive force to direction flexural deformation away from first group of magnet 3.Along with the extensional vibration up and down reciprocatingly of housing 2, piezoelectric vibrator 9 is done reciprocal teeter in horizontal plane, and converts mechanical energy to electric energy.

Claims (1)

1. longitudinal vibration yaw formula low frequency large amplitude piezoelectric cantilever TRT; It is characterized in that: housing is fixedly connected with base through screw; Evenly be bonded with first group of magnet and second group of magnet on the inwall of said housing, first group of magnet and second group of magnet are equipped with bearing pin through screw on the said base not on sustained height; The top crimping of the other end of bearing pin and housing; On said bearing pin, be socketed with first spring, inertial mass and second spring from top to bottom successively, a cannelure that jump ring is installed is respectively established at the two ends of said inertial mass, also is provided with the straight trough that is used to install piezoelectric vibrator on the inertial mass; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and an end of said metal substrate is bonded with magnet, the other end and inserts in the straight trough of inertial mass and through jump ring and fix; Be installed in first group of magnet and second group of magnet and the like pole that is installed on the magnet on the piezoelectric vibrator on the housing near installation.
CN2012201261414U 2012-03-29 2012-03-29 Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam Expired - Fee Related CN202524321U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201261414U CN202524321U (en) 2012-03-29 2012-03-29 Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam

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Application Number Priority Date Filing Date Title
CN2012201261414U CN202524321U (en) 2012-03-29 2012-03-29 Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102594203A (en) * 2012-03-29 2012-07-18 浙江师范大学 Vertical-vibration horizontal-swinging type power generation device of low frequency large amplitude piezoelectric cantilever beam
CN106906700A (en) * 2017-03-06 2017-06-30 武汉理工大学 A kind of track vibration energy collecting device and a kind of track traffic illuminator
CN107317516A (en) * 2017-08-17 2017-11-03 浙江师范大学 A kind of boat-carrying self-powered positioning and tracking device
CN107395055A (en) * 2017-08-17 2017-11-24 浙江师范大学 A kind of novel on-vehicle locating and tracking system vibration energy accumulator
CN112846909A (en) * 2020-12-25 2021-05-28 北京航空航天大学 Thin-wall piece cutting vibration suppression device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102594203A (en) * 2012-03-29 2012-07-18 浙江师范大学 Vertical-vibration horizontal-swinging type power generation device of low frequency large amplitude piezoelectric cantilever beam
CN102594203B (en) * 2012-03-29 2015-05-20 浙江师范大学 Vertical-vibration horizontal-swinging type power generation device of low frequency large amplitude piezoelectric cantilever beam
CN106906700A (en) * 2017-03-06 2017-06-30 武汉理工大学 A kind of track vibration energy collecting device and a kind of track traffic illuminator
CN107317516A (en) * 2017-08-17 2017-11-03 浙江师范大学 A kind of boat-carrying self-powered positioning and tracking device
CN107395055A (en) * 2017-08-17 2017-11-24 浙江师范大学 A kind of novel on-vehicle locating and tracking system vibration energy accumulator
CN107395055B (en) * 2017-08-17 2018-11-16 浙江师范大学 A kind of novel on-vehicle locating and tracking system vibration energy accumulator
CN112846909A (en) * 2020-12-25 2021-05-28 北京航空航天大学 Thin-wall piece cutting vibration suppression device

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Granted publication date: 20121107

Termination date: 20130329