CN207530725U - Collect the collision raising frequency formula piezoelectric harvester that human body swings energy - Google Patents
Collect the collision raising frequency formula piezoelectric harvester that human body swings energy Download PDFInfo
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- CN207530725U CN207530725U CN201721591214.6U CN201721591214U CN207530725U CN 207530725 U CN207530725 U CN 207530725U CN 201721591214 U CN201721591214 U CN 201721591214U CN 207530725 U CN207530725 U CN 207530725U
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Abstract
The utility model discloses the collision raising frequency formula piezoelectric harvesters for collecting human body swing energy.Human motion frequency is low, and existing energy accumulator is difficult in effectively prisoner's energy frequency band, causes its output power low.The circular housing pedestal of the utility model includes circular ring shape shell and cup dolly；Shaft forms revolute pair with cup dolly；Pendulum mound is fixed in shaft, and both ends are respectively opened there are one circular hole at the plane of pendulum mound, and each circular hole embeds one block of magnet；N root piezoelectric beams, which are evenly distributed, to be fixed in shaft；Circular ring shape housing interior side-wall is fixed with the n piece plectrums being evenly distributed；Two boss are fixedly installed in circular ring shape housing interior side-wall, boss and the opposite face of pendulum mound plane are fixed with magnet.The pendulum mound of the utility model is swung around the shaft under human body hunting frequency, so as to piezoelectric beam be driven to collide with plectrum by shaft, piezoelectric beam high-frequency vibration is caused to produce electricl energy, and realizes up-conversion, and introduce non-linear rigidity by magnet, widening prisoner can frequency band.
Description
Technical field
The utility model is related to energy collecting devices, and in particular to collect the collision raising frequency formula piezoelectric energy-capturing that human body swings energy
Device.
Background technology
There is a large amount of movement energy, such as the swing of arms and legs during human motion.Vibrating energy accumulator can be by this
A little movements for swinging form can be converted to electric energy, be powered for wearable electronic product.In order to not influence the normal fortune of human body
Dynamic, such energy accumulator captures the movement energy of human body preferably with the inertia of mass block rather than artificially actively applies driving force.
Piezoelectric material can reach higher energy conversion efficiency, therefore, be widely used in vibrational energy because the electromechanical coupling factor of itself is high
It collects.But because human motion frequency is low, existing energy accumulator is difficult in effectively prisoner's energy frequency band, causes its output power low.
Invention content
The purpose of this utility model is that output power is low under low frequency environments for the problem that piezoelectric harvester, and efficiency is low,
It is proposed a kind of high efficiency, high-output power collision raising frequency formula piezoelectric harvester.
The utility model solves technical problem and adopts the technical scheme that：
The utility model is made of plectrum, piezoelectric beam, pendulum mound, shaft, magnet, circular housing pedestal and boss；Described
Circular housing pedestal includes integrally formed circular ring shape shell and cup dolly；The shaft is coaxially disposed with cup dolly,
And shaft forms revolute pair with cup dolly.The pendulum mound includes integrally formed first semicolumn and the second semicolumn, the
Big 2~the 4mm of radius ratio shaft radius of one semicolumn, the small 4~6mm of internal diameter of the radius ratio circular ring shape shell of the second semicolumn；
The centre bore half that pendulum mound opens up is located on the first semicolumn, the other half is located on the second semicolumn；The centre bore of pendulum mound is fixed
In shaft, both ends are respectively opened there are one circular hole at the plane of the second semicolumn, and each circular hole embeds one block of magnet.N root piezoelectric beams
It is circumferentially uniformly fixed in shaft along shaft, 4≤n≤8.Circular ring shape housing interior side-wall is fixed with the n piece plectrums being evenly distributed；
On shaft axial direction, plectrum and piezoelectric beam aligned in position；In the radial direction, the distance of plectrum and rotating shaft core is less than pressure to shaft
Electric beam outer end end face and the distance of rotating shaft core；Two boss are fixedly installed in circular ring shape housing interior side-wall, two boss set up separately
At the plane both ends of the second semicolumn, and spindle central axis is equal with the distance of two boss；On shaft axial direction, boss
It is set with piezoelectricity case bay；Boss and the opposite face of the second semicolumn plane are fixed with magnet.The plane of second semicolumn with it is convex
Under the plane parastate of platform fixed magnet, magnet and the magnet coaxial arrangement on corresponding end boss and phase on the second semicolumn
The magnetic pole of opposite end is identical.
The circular ring shape shell opens up an adjustment hole group at two lug boss positions；The adjustment hole group packet
Three adjustment holes being circumferentially arranged along circular ring shape shell are included, the central axis angle of each two adjustment hole is equal；Boss with wherein
One adjustment hole is connected by screw.
The magnet uses cylinder.
The utility model has the advantage that：
By introducing non-linear rigidity, widen and capture energy frequency band, frequency wobbles are converted into high-frequency vibration in the form of collision,
It realizes up-conversion, human body swing can be converted into electric energy using piezoelectric effect.
Description of the drawings
Fig. 1 is the floor map of the utility model；
Fig. 2 is the stereogram of the utility model；
Fig. 3 is the structural perspective of pendulum mound in the utility model；
Fig. 4 is that lug boss position is adjusted to the schematic diagram with pendulum mound when nearest in the utility model.
Specific embodiment
It elaborates below in conjunction with the accompanying drawings to the utility model embodiment.
With reference to Fig. 1,2,3, the utility model proposes collect human body swing can collision raising frequency formula piezoelectric harvester, by dialling
Piece 1, piezoelectric beam 2, pendulum mound 3, shaft 4, magnet 5, circular housing pedestal 6 and boss composition；Circular housing pedestal 6 include one into
The circular ring shape shell and cup dolly of type；Shaft 4 is coaxially disposed with cup dolly, and shaft 4 forms revolute pair with cup dolly.
Pendulum mound 3 includes integrally formed first semicolumn and the second semicolumn, the radius ratio shaft big 2mm of 4 radius of the first semicolumn, and the
The small 4mm of internal diameter of the radius ratio circular ring shape shell of two semicolumns；The centre bore half that pendulum mound 3 opens up is located on the first semicolumn,
The other half is located on the second semicolumn；The centre bore of pendulum mound 3 is fixed in shaft 4, and both ends are each at the plane of the second semicolumn
It opens there are one circular hole, each circular hole embeds one block of magnet 5.Six roots of sensation piezoelectric beam 2 is uniformly fixed on along shaft 4 is circumferential in shaft 4.Annulus
Shape housing interior side-wall is fixed with six plectrums 1 being evenly distributed；Plectrum 1 is opposite with piezoelectric beam 2 with respect to the axial position of shaft 4
The axial position of shaft 4 corresponds to；In the radial direction, plectrum 1 and the distance in 4 axle center of shaft are less than 2 outer end end face of piezoelectric beam to shaft 4
With the distance in 4 axle center of shaft；Two boss are fixedly installed in circular ring shape housing interior side-wall, two boss set up separately in the second semicolumn
Plane both ends, and 4 central axis of shaft is equal with the distance of two boss；On shaft axial direction, between boss and piezoelectric beam
Away from setting；Boss and the opposite face of the second semicolumn plane are fixed with magnet 5.The plane of second semicolumn and boss fixed magnet
Under 5 plane parastate, magnet 5 on the second semicolumn is coaxially disposed with the magnet 5 on corresponding end boss and opposite end
Magnetic pole is identical.When energy accumulator does not move, the magnet 5 at the second semicolumn both ends by the boss of both ends magnet 5 it is big
Small equal repulsion magneticaction can be in equilbrium position, not swing.
With reference to Fig. 1, Fig. 4, circular ring shape shell opens up an adjustment hole group at two lug boss positions；Adjustment hole group packet
Three adjustment holes being circumferentially arranged along circular ring shape shell are included, the central axis angle of each two adjustment hole is equal；Boss with wherein
One adjustment hole is connected by screw, and boss can be connect with different location adjustment hole, therefore the upper bottom of opposite circular ring shape shell
Put it is adjustable, it is final to change the non-of pendulum mound 3 so as to change the 5 initial spacing of magnet on magnet 5 and boss on the second semicolumn
Linear rigidity realizes the purpose for the effective prisoner's energy frequency band for widening pendulum mound 3.Therefore the work of pendulum mound 3 can be made by adjusting lug boss position
Frequency is more easy to matching human body hunting frequency.
Magnet uses cylinder in the present embodiment, it is possible to use other shapes.
The operation principle that the collection human body swings the collision raising frequency formula piezoelectric harvester of energy is as follows：
Human body carries during the energy accumulator that pendulum mound 3 is horizontal positioned, and pendulum mound 3 rotates under human body hunting frequency (be less than 10Hz)
Axis 4 is swung, and so as to piezoelectric beam 2 be driven to collide with plectrum 1 by shaft 4, is caused 2 high-frequency vibration of piezoelectric beam, is realized low frequency
Transformation to high frequency (50~500Hz)；High-frequency vibration, which occurs, for piezoelectric beam 2 to produce electricl energy, so as to achieve the purpose that prisoner can.It is multiple
Piezoelectric beam 2 and the combination of plectrum 1 collide, and effectively increase output power.When pendulum mound 3 is swung, the magnetic at the second semicolumn both ends
Iron and the mutually exclusive magneticaction of magnet on corresponding end boss, non-linear rigidity is introduced, therefore widen pendulum mound 3 for pendulum mound 3
Effective prisoner can frequency band, when human body hunting frequency is when the effectively prisoner of pendulum mound 3 can be in frequency band, 3 amplitude of oscillation of pendulum mound is notable, piezoelectric beam 2 with
The impact force increase of plectrum 1, energy accumulator collect more swing energy, energy accumulator are made efficiently to generate electricity in more broadband.And
And second semicolumn both ends magnet and corresponding end boss on the mutually exclusive magneticaction of magnet, can will be unable to turn in time
The kinetic energy of change is stored in the form of magnetic potentical energy, so as to collect more swing energy.
The utility model proposed collect human body swing can collision raising frequency formula piezoelectric harvester can under low frequency environments,
By introducing non-linear rigidity, prisoner's energy frequency band is widened, frequency wobbles are converted into high-frequency vibration in the form of collision, realize raising frequency
Human body swing can be converted into electric energy by conversion using piezoelectric effect.
Claims (3)
1. collect the collision raising frequency formula piezoelectric harvester that human body swings energy, it is characterised in that：By plectrum, piezoelectric beam, pendulum mound, turn
Axis, magnet, circular housing pedestal and boss composition；The circular housing pedestal includes integrally formed circular ring shape shell and circle
Shape pedestal；The shaft is coaxially disposed with cup dolly, and shaft forms revolute pair with cup dolly；The pendulum mound includes
Integrally formed first semicolumn and the second semicolumn, the big 2~4mm of radius ratio shaft radius of the first semicolumn, the second semicircle
Small 4~the 6mm of internal diameter of the radius ratio circular ring shape shell of column；The centre bore half that pendulum mound opens up is located on the first semicolumn, another
Half is located on the second semicolumn；The centre bore of pendulum mound is fixed in shaft, and both ends are respectively provided with one at the plane of the second semicolumn
A circular hole, each circular hole embed one block of magnet；N roots piezoelectric beam is circumferentially uniformly fixed in shaft along shaft, 4≤n≤8；Circular ring shape
Housing interior side-wall is fixed with the n piece plectrums being evenly distributed；On shaft axial direction, plectrum and piezoelectric beam aligned in position；Shaft
In the radial direction, the distance of plectrum and rotating shaft core is less than the distance of piezoelectric beam outer end end face and rotating shaft core；Outside circular ring shape
Two boss are fixedly installed in shell madial wall, and two boss set up separately at the plane both ends of the second semicolumn, and spindle central axis with
The distance of two boss is equal；On shaft axial direction, boss is set with piezoelectricity case bay；Boss and the second semicolumn plane
Opposite face is fixed with magnet；Under the plane of second semicolumn and the plane parastate of boss fixed magnet, on the second semicolumn
Magnet on corresponding end boss magnet coaxial arrangement and opposite end magnetic pole it is identical.
2. the collision raising frequency formula piezoelectric harvester according to claim 1 collected human body and swing energy, it is characterised in that：It is described
Circular ring shape shell an adjustment hole group is opened up at two lug boss positions；The adjustment hole group is included along outside circular ring shape
Three adjustment holes that shell is circumferentially arranged, the central axis angle of each two adjustment hole are equal；Boss leads to one of adjustment hole
Cross screw connection.
3. the collision raising frequency formula piezoelectric harvester according to claim 1 collected human body and swing energy, it is characterised in that：It is described
Magnet use cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721591214.6U CN207530725U (en) | 2017-11-24 | 2017-11-24 | Collect the collision raising frequency formula piezoelectric harvester that human body swings energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721591214.6U CN207530725U (en) | 2017-11-24 | 2017-11-24 | Collect the collision raising frequency formula piezoelectric harvester that human body swings energy |
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| CN207530725U true CN207530725U (en) | 2018-06-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786122A (en) * | 2017-11-24 | 2018-03-09 | 杭州电子科技大学 | Collect collision raising frequency formula piezoelectric harvester and its prisoner's energy method that human body swings energy |
| CN110212693A (en) * | 2019-06-12 | 2019-09-06 | 南方科技大学 | Energy collecting device and wearable electronic |
| US20220344970A1 (en) * | 2021-04-23 | 2022-10-27 | Bae Systems Information And Electronic Systems Integration Inc. | Pre-launch energy harvesting on aerodynamic systems |
-
2017
- 2017-11-24 CN CN201721591214.6U patent/CN207530725U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786122A (en) * | 2017-11-24 | 2018-03-09 | 杭州电子科技大学 | Collect collision raising frequency formula piezoelectric harvester and its prisoner's energy method that human body swings energy |
| CN107786122B (en) * | 2017-11-24 | 2023-10-17 | 杭州电子科技大学 | Collision frequency-increasing type piezoelectric energy harvester for collecting human body swing energy and energy harvesting method thereof |
| CN110212693A (en) * | 2019-06-12 | 2019-09-06 | 南方科技大学 | Energy collecting device and wearable electronic |
| US20220344970A1 (en) * | 2021-04-23 | 2022-10-27 | Bae Systems Information And Electronic Systems Integration Inc. | Pre-launch energy harvesting on aerodynamic systems |
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