CN108470822A - A kind of annular groove adjusts the pre-fastening structure of height - Google Patents
A kind of annular groove adjusts the pre-fastening structure of height Download PDFInfo
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- CN108470822A CN108470822A CN201810470891.5A CN201810470891A CN108470822A CN 108470822 A CN108470822 A CN 108470822A CN 201810470891 A CN201810470891 A CN 201810470891A CN 108470822 A CN108470822 A CN 108470822A
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- Prior art keywords
- upper cover
- annular groove
- piezoelectric transformer
- connecting rod
- fastening structure
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- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 210000000577 adipose tissue Anatomy 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000036316 preload Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
- H10N30/886—Additional mechanical prestressing means, e.g. springs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses the pre-fastening structures that a kind of annular groove adjusts height, and the preload power apparatus includes transformer case, and shell includes upper cover, pedestal, is mutually fixedly connected by elastic component between upper cover and pedestal；Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, and the strip piezoelectric transformer posts downwards thermal coupling element on one side, and pretightning force bringing device is equipped in the mid-point position of the strip piezoelectric transformer；The pretightning force bringing device includes adjustable link, upper lid is equipped with tie rod holes for making connecting rod pass through upper cover, and at the tie rod holes, upper cover thickness is thinner everywhere than remaining, and the connecting rod is equidistantly equipped with annular groove with upper cover junction, the annular groove of the connecting rod is stuck in tie rod holes.Cooling fin is set to radiate for piezoelectric transformer under the premise of not influencing the piezoelectric transformer work vibration shape, and good heat dissipation effect, simple in structure, it is convenient to realize.
Description
Technical field
The present invention relates to transformer technology field, especially a kind of annular groove adjusts the pre-fastening structure of height.
Background technology
Piezoelectric transformer operation principle is to convert electrical energy into mechanical energy by inverse piezoelectric effect, is then imitated by positive piezoelectricity
Electric energy should be converted mechanical energy into.Loss in entire energy transfer process includes dielectric absorption, piezoelectricity loss and elastic loss.
Because piezoelectric transformer is operated in resonance state, the different piezoelectric transformer vibration shape is different, i.e., every bit is corresponding
Stress, strain are different.Electric field and dielectric displacement have very big difference also with the difference of structure.With the development of electronics technology, Gao Gong
Rate, small size have become the inexorable trend of development in science and technology, and piezoelectric ceramics itself possesses make many materials incomparable potential
High power density is the possibility substitute of modern electromagnetic transformers miniaturization, but because calorific value material parameter caused greatly
Variation, but also the state that piezoelectric transformer work is suitble to is very unstable, therefore its application is confined to the low power density stage, sternly
Its application in large-power occasions is constrained again, and heat up the need for making piezoelectric transformer from meeting development in science and technology caused by loss
It asks.
The power electronic device being often used in industry all considers radiating requirements, is radiated using radiating element, protects
The output power and stability of power device work are demonstrate,proved.For piezoelectric transformer, it is based on same consideration, it is desirable to pass through outside
Auxiliary heat dissipation can bring same ideal effect.However because of the electromechanical properties of piezoelectric transformer operation itself, heat dissipation
The design of device is difficult to common static power device, or even is artificially impossible again, so know today, piezoelectricity transformation
The still not mating radiator of device.
Invention content
The present invention is to overcome disadvantage of the existing technology, provides the strip piezoelectricity with pretightning force bringing device and becomes
Depressor makes cooling fin radiate for piezoelectric transformer under the premise of not influencing the piezoelectric transformer work vibration shape, and good heat dissipation effect,
Its is simple in structure, and it is convenient to realize.
In order to solve the above technical problems, a kind of annular groove of the present invention adjusts the pre-fastening structure of height, described pre-
Clamp force device includes transformer case, and shell includes upper cover, pedestal, is connected by the way that elastic component is mutually fixed between upper cover and pedestal
It connects；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity transformation
Device posts downwards thermal coupling element on one side, and being equipped with pretightning force in the mid-point position of the strip piezoelectric transformer applies dress
It sets；
The pretightning force bringing device includes adjustable link, and upper lid is equipped with tie rod holes for making connecting rod pass through upper cover, in institute
It states at tie rod holes, upper cover thickness is thinner everywhere than remaining, and the connecting rod is equidistantly equipped with annular groove, the company with upper cover junction
The annular groove of bar is stuck in tie rod holes, and spring is equipped on the connecting rod, and the spring one end resists upper cover, the other end and piezoelectricity
Transformer is connected.
Further, the length of connecting rod is slightly longer than the elastic component.
Further, the elastic component is spring or rubber.
As a preferred embodiment, the thermal coupling element is copper sheet.
As a preferred embodiment, being equipped with heat-conducting insulating silicon fat pad between the thermal coupling element and transformer base.
Advantageous effect of the present invention is：
Compared with prior art, the present invention by a kind of pretightning force bringing device with spring by cooling fin and piezoelectric transformer work
Make the position that mode displacement is 0 closely to connect, it is piezoelectricity under the premise of not influencing the piezoelectric transformer work vibration shape to make cooling fin
Transformer radiates, and good heat dissipation effect, simple in structure, and it is convenient to realize.
Pretightning force bringing device includes adjustable link, and upper lid is equipped with tie rod holes for making connecting rod pass through upper cover, even
At rod aperture, upper cover thickness is thinner everywhere than remaining, and connecting rod is equidistantly equipped with annular groove, the annular groove card of connecting rod with upper cover junction
In tie rod holes.Under the requirement of different pretightning forces, pretightning force can be allow to adjust by pressing down on upper cover, be suitble to difference
Piezoelectric transformer is used under cooling requirements, extends its use scope.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
The present invention is further elaborated below in conjunction with the accompanying drawings：
Common power chip inner core is directly anchored on shell, however for piezoelectric transformer, it is complete however for
It is complete fixed to be equivalent to the work for attempting to stop piezoelectric transformer for piezoelectric transformer, it will power that it is transmitted and
Efficiency generates strong influence.In order to ensure that the fully free state of piezoelectric transformer operation, fixed point selection are working
The point that mode displacement is 0, fixes, can reduce the constraint vibrated to piezoelectric transformer in this way, this is in dots as possible
Piezoelectric transformer fixes the method for being commonly recognized and receiving.It passes well by hot in order to realize while not absorbing piezoelectricity
The thermal coupling element i.e. conduction material that the vibrational energy and piezoelectric transformer of transformer operation are in direct contact, needs to have
Good heat conductivity, the high characteristic of quality factor.Some liquid（Such as silicone oil）Heat conductivility it is good, but because damp it is too big, we
It does not consider.
Because the size of strip piezoelectric transformer width what thickness direction is relative to length direction very little, therefore longitudinal vibration shape
Piezoelectric transformer, the vibration of what thickness direction of width can be ignored relative to length is rectangular, it is only necessary to consider length direction
Misalignment, to determine displacement smallest point.And the displacement curve vibrated in the longitudinal direction is equivalent to sine curve, center
The displacement at place is zero.It will be used as fixed point herein and apply prestressing force.
In order to export the heat generated when piezoelectric transformer work, pass through Heat Conduction Material, that is, thermal coupling using heat transfer principle
Element transfers heat away from.It is designed specifically to：It is position that example will be pre-tightened simultaneously and be applied to another main surface resonance of piezoelectric transformer
It is the center of piezoelectric transformer for one first order mode of longitudinal resonance to move minimum point, realizes what heat of piezoelectric transformer
The good contact of coupling element leads to temperature when heat transfer reduces piezoelectric transformer work, reaches the mesh for improving and transmitting power
's.
It is transferred heat away from simultaneously with extraneous insulation to realize, piezoelectric transformer and thermal coupling element are placed on and lead
On thermal insulation silicone grease pad, the insulation with shell is realized.
Under resonant conditions, friction generates heat for piezoelectric transformer main surface and thermal coupling element main surface contact surface, therefore
The thermal coupling element surface of making must be smooth as possible.The piezoelectric transformer electrode surface roughness Ra that prior art makes<=
O.2 micron, piezoelectric transformer main surface plane degree error<=O.3 micron, in order to reduce the influence that contact is brought, and pressure to the greatest extent
The thermal coupling element main surface roughness Ra that piezoelectric transformer ground electrode main surface is in direct contact<=O.2 micron, meets the above item
Part, the heat that friction generates heat disperses relative to thermal coupling element Secondary piezoelectric transformer are much smaller.If thermal coupling element is led
Electricity, piezoelectric transformer output and input ground electrode as being same electrode, a monoblock thermal coupling element can be used；Piezoelectric transformer is defeated
If not entering and exporting the same electrode of ground electrode, to be radiated respectively to input/output section using two pieces of thermal coupling elements.
It is not that same electrode strip piezoelectric transformer vibrates mould if figure is applied to input ground electrode and output ground electrode
The heat dissipating method specific embodiment perspective view of formula and E are to sectional view；This piezoelectric transformer is divided into different for input and output portion
Ground electrode, each label meaning are as follows：L is upper cover, and 2 be pedestal, and 3 be elastic component, and 4 be adjustable link, and 5 be annular groove.From
Copper sheet is embedded into the design of silicone grease pad, copper sheet can also be made to be in relatively fixed position, while ensure that the peace with shell
All insulation.Stablize for piezoelectric transformer ground electrode main surface and cooling fin main surface and be in close contact, while by piezoelectric transformer
Fix, certain pretightning force need to be applied in another main surface of piezoelectric transformer, pretightning force apply medium can be cylinder or
Cuboid, general diameter or the longest length of side are less than the 1/10 of longest dimension.If pretightning force applies longest in medium main surface
Not less than the pretightning force of Insulating gap and the contact of piezoelectric transformer main surface among piezoelectric transformer to apply medium necessary on side
For electrical insulator；If pretightning force applies the Insulating gap that the longest side of medium main surface is less than among transformer, pretightning force is applied
It can be non-conducting material or conductive material to add medium, here it is proposed that using non-conducting material, because conductive material can drop
The insulation characterisitic of low input/output section.
Specifically, a kind of annular groove provided by the invention adjusts the pre-fastening structure of height, the preload power apparatus packet
Transformer case is included, shell includes upper cover, pedestal, is mutually fixedly connected by elastic component between upper cover and pedestal；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity transformation
Device posts downwards thermal coupling element on one side, and being equipped with pretightning force in the mid-point position of the strip piezoelectric transformer applies dress
It sets；
The pretightning force bringing device includes adjustable link, and upper lid is equipped with tie rod holes for making connecting rod pass through upper cover, in institute
It states at tie rod holes, upper cover thickness is thinner everywhere than remaining, and the connecting rod is equidistantly equipped with annular groove, the company with upper cover junction
The annular groove of bar is stuck in tie rod holes, and spring is equipped on the connecting rod, and the spring one end resists upper cover, the other end and piezoelectricity
Transformer is connected.Under the requirement of different pretightning forces, pretightning force can be allow to adjust by pressing down on upper cover, be suitble to difference
Piezoelectric transformer is used under cooling requirements, extends its use scope.
The length of connecting rod is slightly longer than the elastic component, and the elastic component is spring or rubber.
As a preferred embodiment, the thermal coupling element is copper sheet.
As a preferred embodiment, being equipped with heat-conducting insulating silicon fat pad between the thermal coupling element and transformer base.
Above-mentioned is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the principle of the present invention, several modifications and adaptations can also be made, these modifications and adaptations also should be regarded as
Protection scope of the present invention.
Claims (5)
1. a kind of annular groove adjusts the pre-fastening structure of height, which is characterized in that the pre-fastening structure includes outside transformer
Shell, shell include upper cover, pedestal, are mutually fixedly connected by elastic component between upper cover and pedestal；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity transformation
Device posts downwards thermal coupling element on one side, and being equipped with pretightning force in the mid-point position of the strip piezoelectric transformer applies dress
It sets；
The pretightning force bringing device includes adjustable link, and upper lid is equipped with tie rod holes for making connecting rod pass through upper cover, in institute
It states at tie rod holes, upper cover thickness is thinner everywhere than remaining, and the connecting rod is equidistantly equipped with annular groove, the company with upper cover junction
The annular groove of bar is stuck in tie rod holes；Spring is equipped on the connecting rod, the spring one end resists upper cover, the other end and piezoelectricity
Transformer is connected.
2. a kind of annular groove according to claim 1 adjusts the pre-fastening structure of height, which is characterized in that the length of connecting rod
Degree is slightly longer than the elastic component.
3. a kind of annular groove according to claim 1 adjusts the pre-fastening structure of height, which is characterized in that the elastic component
For spring or rubber.
4. a kind of annular groove according to any one of claims 1 to 3 adjusts the pre-fastening structure of height, which is characterized in that
The thermal coupling element is copper sheet.
5. a kind of annular groove according to claim 4 adjusts the pre-fastening structure of height, which is characterized in that the thermal coupling
Heat-conducting insulating silicon fat pad is equipped between element and transformer base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470891.5A CN108470822A (en) | 2018-05-17 | 2018-05-17 | A kind of annular groove adjusts the pre-fastening structure of height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470891.5A CN108470822A (en) | 2018-05-17 | 2018-05-17 | A kind of annular groove adjusts the pre-fastening structure of height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108470822A true CN108470822A (en) | 2018-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810470891.5A Pending CN108470822A (en) | 2018-05-17 | 2018-05-17 | A kind of annular groove adjusts the pre-fastening structure of height |
Country Status (1)
| Country | Link |
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| CN (1) | CN108470822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360886A (en) * | 2018-11-20 | 2019-02-19 | 武汉理工大学 | Piezoelectric step-up transformer and step-up method |
| CN109545952A (en) * | 2018-11-20 | 2019-03-29 | 武汉理工大学 | It is depressured piezoelectric transformer and voltage reduction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804728U (en) * | 2010-06-22 | 2011-04-20 | 天津市第六电器开关厂 | Limit switch with roller connecting rod |
| CN102097581A (en) * | 2010-12-06 | 2011-06-15 | 中国科学技术大学 | Piezoelectric transformer and heat sink thereof |
| CN102299010A (en) * | 2011-08-17 | 2011-12-28 | 山东泰开中压开关有限公司 | Novel auxiliary switch-off spring structure |
| CN202185751U (en) * | 2011-07-22 | 2012-04-11 | 航天科工防御技术研究试验中心 | Pretightening-force-adjustable quick clamp |
| CN203488613U (en) * | 2013-10-12 | 2014-03-19 | 厦门嘉达声学技术有限公司 | Adjustable pre-load damping spring vibration isolator |
| CN205335327U (en) * | 2016-01-29 | 2016-06-22 | 无锡索亚特试验设备有限公司 | Explosion -proof pressure relief device of power battery high low temperature test equipment |
| JP2017009054A (en) * | 2015-06-23 | 2017-01-12 | 日本精工株式会社 | Preload recovery device for ball screw |
| CN206778071U (en) * | 2017-04-24 | 2017-12-22 | 扬州市君睿创智工业设计有限公司 | A kind of Height Adjustable desulphurization denitration cloth bag for dust remover skeleton |
| CN207020040U (en) * | 2017-05-25 | 2018-02-16 | 北京城建亚泰金砼混凝土有限公司 | A kind of cement consistency analyzer of energy leveling |
| CN208256725U (en) * | 2018-05-17 | 2018-12-18 | 南京溧水得瑞微型电机厂 | A kind of annular groove adjusts the pre-fastening structure of height |
-
2018
- 2018-05-17 CN CN201810470891.5A patent/CN108470822A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804728U (en) * | 2010-06-22 | 2011-04-20 | 天津市第六电器开关厂 | Limit switch with roller connecting rod |
| CN102097581A (en) * | 2010-12-06 | 2011-06-15 | 中国科学技术大学 | Piezoelectric transformer and heat sink thereof |
| CN202185751U (en) * | 2011-07-22 | 2012-04-11 | 航天科工防御技术研究试验中心 | Pretightening-force-adjustable quick clamp |
| CN102299010A (en) * | 2011-08-17 | 2011-12-28 | 山东泰开中压开关有限公司 | Novel auxiliary switch-off spring structure |
| CN203488613U (en) * | 2013-10-12 | 2014-03-19 | 厦门嘉达声学技术有限公司 | Adjustable pre-load damping spring vibration isolator |
| JP2017009054A (en) * | 2015-06-23 | 2017-01-12 | 日本精工株式会社 | Preload recovery device for ball screw |
| CN205335327U (en) * | 2016-01-29 | 2016-06-22 | 无锡索亚特试验设备有限公司 | Explosion -proof pressure relief device of power battery high low temperature test equipment |
| CN206778071U (en) * | 2017-04-24 | 2017-12-22 | 扬州市君睿创智工业设计有限公司 | A kind of Height Adjustable desulphurization denitration cloth bag for dust remover skeleton |
| CN207020040U (en) * | 2017-05-25 | 2018-02-16 | 北京城建亚泰金砼混凝土有限公司 | A kind of cement consistency analyzer of energy leveling |
| CN208256725U (en) * | 2018-05-17 | 2018-12-18 | 南京溧水得瑞微型电机厂 | A kind of annular groove adjusts the pre-fastening structure of height |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360886A (en) * | 2018-11-20 | 2019-02-19 | 武汉理工大学 | Piezoelectric step-up transformer and step-up method |
| CN109545952A (en) * | 2018-11-20 | 2019-03-29 | 武汉理工大学 | It is depressured piezoelectric transformer and voltage reduction method |
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Application publication date: 20180831 |
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