CN107565850A - Bistable state piezoelectric cantilever power generation box - Google Patents

Bistable state piezoelectric cantilever power generation box Download PDF

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Publication number
CN107565850A
CN107565850A CN201710749898.6A CN201710749898A CN107565850A CN 107565850 A CN107565850 A CN 107565850A CN 201710749898 A CN201710749898 A CN 201710749898A CN 107565850 A CN107565850 A CN 107565850A
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CN
China
Prior art keywords
bounce
spring
piezoelectric cantilever
rack
bistable state
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Application number
CN201710749898.6A
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Chinese (zh)
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CN107565850B (en
Inventor
姚明辉
夏委
张伟
刘鹏飞
马立
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北京工业大学
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Priority to CN201710749898.6A priority Critical patent/CN107565850B/en
Publication of CN107565850A publication Critical patent/CN107565850A/en
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Publication of CN107565850B publication Critical patent/CN107565850B/en

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Abstract

The invention discloses bistable state piezoelectric cantilever power generation box, including pedal, cover plate, casing, gear, rack, spring, sleeve, the two-sided rack, bounce fixture, bounce tooth, cantilever beam and magnet piece, the cover plate is connected by screw with casing, pedal is located above cover plate, it is connected with rack, rack bottom and the internal sleeve connection that spring is housed, rack engages with little gear, little gear is coaxially fixed with gear wheel, gear wheel engages with the two-sided rack of its both sides, the two-sided rack and bounce tooth contact, tooth of beating is arranged on bounce fixture by spring and rotating shaft, piezoelectric cantilever is installed on bounce fixture and the sleeve connection of spring is housed with inside, the piezoelectric cantilever basal layer upper and lower surface posts piezoelectric patches, the magnet piece relative with cantilever beam end magnets block magnetic pole is installed on cabinet wall.

Description

Bistable state piezoelectric cantilever power generation box
Technical field
The present invention is a kind of bistable state piezoelectric cantilever power generation box, can effectively gather collection pedestrian and vehicle to ground effects Mechanical energy is generated electricity, and belongs to piezo-electric generating and regenerated environment protecting new energy field.
Background technology
With the reduction of the non-renewable energies such as natural gas, oil, the energy turns into the significant problem that the world today faces, and seeks Look for novelty the energy while using regenerative resource be essential.Can be by all state's environment using the direct piezoelectric effect of piezoelectric In mechanical energy change into electric energy, to realize the self energizing of electronic equipment, it is possible to achieve energy cycling and reutilization, can either solve Battery altering inconvenience problem, and can enough save the energy, environmental protection.
Chinese patent (publication number CN104009669A) discloses a kind of piezo-electric floor device of piecemeal cantilever beam structure, should Invention is acted directly on piezoelectric patches using top plate generated electricity in one apparatus, and piezoelectric patches deformation comparison is small, it is difficult to promote. Chinese patent (publication number CN103986369A) discloses a kind of electric power installation of roadway to be generated electricity using bituminous paving deformation, The device is generated electricity using the piezoelectric generating device in pavement asphalt, but the deformation comparison of piezoelectric patches is small, and is difficult to Realize.
The content of the invention
In order to utilize mechanical energy to greatest extent, and the vibration of various frequencies is made full use of to be generated electricity, this hair Bright to provide a kind of bistable state piezoelectric cantilever power generation box, its structure design under any vibration frequency be able to can have The ability of effect generating, as long as effect has a certain size power or shakes just energy normal work, this causes this device to have wide answer Use prospect.
In order to solve the above-mentioned technical problem, the technical scheme of bistable state piezoelectric cantilever power generation box of the present invention is:Cover plate with Casing is connected by screw;The lower surface of pedal is provided with spring one, is connected above cover plate, and with rack;Rack lower end Portion is connected with the internal sleeve one equipped with spring one;The rack engages with little gear, drives bull gear drive, little gear with it is big Gear is coaxially fixed;The big little gear is arranged on casing by gear shaft and bearing;The gear wheel is double with its both sides Face rack engagement;The two-sided rack upper and lower end parts are connected with the internal sleeve two equipped with spring two;The two-sided rack is with jumping Moving teeth contacts;The bounce tooth is arranged on bounce fixture by spring four and rotating shaft;Piezoelectricity is installed on the bounce fixture Cantilever beam and it is connected with the internal sleeve three equipped with spring three;The sleeve one, sleeve two and sleeve three rise guiding and it is spacing Effect;The piezoelectric cantilever basal layer upper and lower surface posts piezoelectric patches;Installation and cantilever beam end magnetic on the cabinet wall The relative magnet piece of iron block magnetic pole;When the two-sided rack moves up and down, bounce fixture can be moved with it and moved, meanwhile, Tooth of being beated in the presence of the two-sided rack and spring four is rotated, and when turning to certain angle, bounce tooth is just crossed to be connect with it The tactile rack gear teeth, so that bounce fixture produces bounce and makes piezoelectric cantilever mounted thereto that bistable state vibration occur.
Compared with prior art, the beneficial effects of the invention are as follows.
(1) present invention is deformed piezoelectric cantilever using the bounce for fixture of beating, and due to the influence of spring three, jumps After moving teeth is beated each time, bounce fixture all can sustained vibration until complete attenuation, therefore generating efficiency is high.
(2) of the invention because bounce tooth can continue to beat, this is excited equivalent to systems stay, and system capacity utilization rate is high.
(3) present invention increase gear drive so that the displacement of pedal very little also can produce two-sided spring and bounce fixture Larger displacement, therefore piezoelectric cantilever also has larger amplitude, therefore generating effect is good.
Brief description of the drawings
Fig. 1 is the structural representation of piezoelectric cantilever in the present invention;
Fig. 2 is the structural representation that fixture assembles with beat tooth and spring four of being beated in the present invention;
Fig. 3 is bounce fixture assembling structure schematic cross-sectional view in the present invention;
Fig. 4 is the structural representation of in-line gears in the present invention;
Fig. 5 is monnolithic case structural representation in the present invention;
Fig. 6 is the complete section schematic diagram of monnolithic case knot in the present invention;
In figure:
1- pedal 2- cover plate 3- casings
The 6- little gears of 4- rack 5- springs one
The 9- the two-sided racks of 7- gear wheel 8- sleeves one
The 12- piezoelectric cantilevers of two 11- sleeves of 10- springs two
The 15- gear shafts of one 14- magnet pieces of 13- magnet pieces two
16- bearings 17- bounce fixture 18- bounce teeth
The 20- of 19- springs three bounce tooth rotating shaft 21- spring fixing pins
The 23- sleeves three of 22- springs four
Specific embodiment
The present invention is described in further detail with reference to specific embodiment.
As shown in Figures 1 to 6, bistable state piezoelectric cantilever power generation box of the present invention, cover plate 2 are connected by screw with casing 3; The lower surface of pedal 1 is provided with spring 1, is connected above cover plate 2, and with rack 4;The bottom of rack 4 and inside Sleeve 1 equipped with spring 1 connects;The rack 4 engages with little gear 6, drives gear wheel 7 to rotate, little gear 6 and canine tooth Wheel 7 is coaxially fixed;The big little gear 7/6 is arranged on casing 3 by gear shaft 15 and bearing 16;The gear wheel 7 and its The two-sided rack 9 of both sides engages;The upper and lower end parts of the two-sided rack 9 are connected with the internal sleeve 2 11 equipped with spring 2 10;Institute The two-sided rack 9 is stated to contact with bounce tooth 18;The bounce tooth 18 is arranged on bounce fixture 17 by spring 4 22 and rotating shaft 20 On;Piezoelectric cantilever 12 is installed on the bounce fixture 17 and is connected with the internal sleeve 3 23 equipped with spring 3 19;The set Cylinder 1, sleeve 2 11 and sleeve 3 23 all play guiding and spacing;The basal layer upper and lower surface of piezoelectric cantilever 12 patch There is piezoelectric patches;The magnet piece two 14 relative with piezoelectric cantilever 12 end magnets block, one 13 magnetic poles is installed on the inwall of casing 3; When the two-sided rack 9 moves up and down, bounce fixture 17 can be moved with it and moved, meanwhile, in the two-sided rack 9 and spring 4 22 In the presence of bounce tooth 18 rotate, when turning to certain angle, bounce tooth 18 just cross the rack gear teeth being in contact with it, So that bounce fixture 17 produces bounce and makes piezoelectric cantilever 12 mounted thereto that bistable state vibration occur.
The spring 1, spring 2 10, spring 3 19 and the elastic-restoring force of spring 4 22 are appropriate.
All piezoelectric cantilevers 12 are connected to the energy accumulating device of bounce fixture 17 by conductor in parallel.
The upper and lower surface of piezoelectric cantilever 12 lays electrode, and piezoelectric layer and basal layer are connected with wire respectively.
The protective layer material of piezoelectric cantilever 12 is polyester, and piezoelectricity layer material is the PVDF after polarization, the material of basal layer Expect for one kind in copper, steel and aluminium alloy.
Bistable state piezoelectric cantilever power generation box of the present invention can be applied to the larger place of flow of the people, vehicle flowrate, available for for The isolated electron such as street lamp, automatic vending machine device is powered.
In summary, bistable state piezoelectric cantilever power generation box of the present invention using increasing speed gearing transmission by pin step on ground when it is small Vertical displacement is transformed into the violent oscillatory motion of piezoelectric cantilever, overcomes frequency to the defects of the limiting that generate electricity;Simultaneously as bounce The application of tooth and bounce fixture, movement can all cause cantilever beam to be repeatedly excited to pedal each time, greatly improve mechanical energy To the transformation efficiency of electric energy, generating electricity is improved.Present apparatus structure is novel, and generating efficiency is high, and capacity usage ratio is high, user Just.
Although above in conjunction with figure, invention has been described, and the invention is not limited in above-mentioned specific embodiment party Formula, above-mentioned embodiment is only schematical, rather than restricted, is not departing from the situation of present inventive concept Under, many variations can also be made, these belong to the protection category of the present invention.

Claims (6)

1. bistable state piezoelectric cantilever power generation box, it is characterised in that:Cover plate (2) is connected by screw with casing (3);Pedal (1) Lower surface is provided with spring one (5), above cover plate (2), and is connected with rack (4);Rack (4) bottom and inside Sleeve one (8) connection equipped with spring one (5);The rack (4) is engaged with little gear (6), drives gear wheel (7) to rotate, small Gear (6) is coaxial fixed with gear wheel (7);Gear (7,6) is arranged on casing (3) by gear shaft (15) and bearing (16); The gear wheel (7) is engaged with the two-sided rack (9) of its both sides;The two-sided rack (9) upper and lower end parts are equipped with spring with internal Sleeve two (11) connection of two (10);The two-sided rack (9) contacts with bounce tooth (18);The bounce tooth (18) passes through spring Four (22) and rotating shaft (20) are arranged on bounce fixture (17);Installed on bounce fixture (17) piezoelectric cantilever (12) and It is connected with the internal sleeve three (23) equipped with spring three (19);The sleeve one (8), sleeve two (11) and sleeve three (23) all rise It is oriented to and spacing effect;Piezoelectric cantilever (12) the basal layer upper and lower surface posts piezoelectric patches;On casing (3) inwall The installation magnet piece two (14) relative with one (13) magnetic pole of piezoelectric cantilever (12) end magnets block;On the two-sided rack (9) When lower mobile, bounce fixture (17) can be moved with it and moved, meanwhile, in the presence of the two-sided rack (9) and spring four (22) Bounce tooth (18) rotates, and when turning to certain angle, bounce tooth (18) just crosses the rack gear teeth being in contact with it, so as to Bounce fixture (17) is produced bounce and make piezoelectric cantilever mounted thereto (12) that bistable state vibration occur.
2. according to the bistable state piezoelectric cantilever power generation box described in claim 1, it is characterised in that:The spring one (5), bullet Spring two (10), spring three (19) and spring four (22) elastic-restoring force are appropriate.
3. according to the bistable state piezoelectric cantilever power generation box described in claim 1, it is characterised in that:The bounce fixture (17) When being moved to certain value, spring four (22) makes bounce tooth (18) can be made to beat.
4. according to the bistable state piezoelectric cantilever power generation box described in claim 1, it is characterised in that:All piezoelectric cantilevers (12) energy accumulating device of bounce fixture (17) is connected to by conductor in parallel.
5. according to the bistable state piezoelectric cantilever power generation box described in claim 1, it is characterised in that:The piezoelectric cantilever (12) upper and lower surface laying electrode, and piezoelectric layer and basal layer are connected with wire respectively.
6. according to the bistable state piezoelectric cantilever power generation box described in claim 1, it is characterised in that:The piezoelectric cantilever (12) protective layer material is polyester, and piezoelectricity layer material is the PVDF after polarization, and the material of basal layer is in copper, steel or aluminium alloy It is a kind of.
CN201710749898.6A 2017-08-28 2017-08-28 Bistable state piezoelectric cantilever power generation box CN107565850B (en)

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CN107565850A true CN107565850A (en) 2018-01-09
CN107565850B CN107565850B (en) 2019-06-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723616A (en) * 2018-12-29 2019-05-07 西安理工大学 Highway deceleration strip generating set based on bistable state vibration

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102013835A (en) * 2010-06-29 2011-04-13 上海大学 Pedal type continuous vibration piezoelectric generating device
CN203570520U (en) * 2013-10-30 2014-04-30 东北大学 Hybrid piezoelectric and electromagnetic vibration energy power generation device
CN204139530U (en) * 2014-09-23 2015-02-04 武汉理工大学 A kind of Novel pressure electric-type electricity-generating floor
CN105897048A (en) * 2016-05-05 2016-08-24 重庆大学 Piezoelectric electricity generation device with wide resonance frequency band

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102013835A (en) * 2010-06-29 2011-04-13 上海大学 Pedal type continuous vibration piezoelectric generating device
CN203570520U (en) * 2013-10-30 2014-04-30 东北大学 Hybrid piezoelectric and electromagnetic vibration energy power generation device
CN204139530U (en) * 2014-09-23 2015-02-04 武汉理工大学 A kind of Novel pressure electric-type electricity-generating floor
CN105897048A (en) * 2016-05-05 2016-08-24 重庆大学 Piezoelectric electricity generation device with wide resonance frequency band

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723616A (en) * 2018-12-29 2019-05-07 西安理工大学 Highway deceleration strip generating set based on bistable state vibration

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