CN208256728U - A kind of screw rod adjusts the pre-fastening structure of height - Google Patents
A kind of screw rod adjusts the pre-fastening structure of height Download PDFInfo
- Publication number
- CN208256728U CN208256728U CN201820731152.2U CN201820731152U CN208256728U CN 208256728 U CN208256728 U CN 208256728U CN 201820731152 U CN201820731152 U CN 201820731152U CN 208256728 U CN208256728 U CN 208256728U
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- CN
- China
- Prior art keywords
- piezoelectric transformer
- pedestal
- screw rod
- fastening structure
- threaded rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 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 22
- 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
- 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
- 230000009466 transformation Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000011161 development 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
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 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
- 239000007787 solid Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 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
- 239000000615 nonconductor Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses the pre-fastening structure that a kind of screw rod adjusts height, the pre-fastening structure includes transformer case, and shell includes upper cover, pedestal, is mutually fixedly connected between upper cover and pedestal by elastic component；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, is equipped with pretightning force bringing device in the mid-point position of the strip piezoelectric transformer；The pretightning force bringing device includes threaded rod, and fastener is equipped on the threaded rod.Cooling fin is set to radiate under the premise of not influencing the piezoelectric transformer work vibration shape for piezoelectric transformer, and good heat dissipation effect, structure is simple, and it is convenient to realize.
Description
Technical field
The utility model relates to transformer technology field, especially a kind of screw rod adjusts the pre-fastening structure of height.
Background technique
Piezoelectric transformer working principle is that mechanical energy is converted electrical 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 work is 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 material parameter caused by calorific value 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
It is constrained again in the application of large-power occasions, and heating is not so that piezoelectric transformer is able to satisfy the need of 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
Device is still without matched radiator.
Utility model content
The utility model is to overcome disadvantage of the existing technology, provides the strip pressure with pretightning force bringing device
Piezoelectric transformer makes cooling fin radiate under the premise of not influencing the piezoelectric transformer work vibration shape for piezoelectric transformer, and the effect that radiates
Fruit is good, and structure is simple, and it is convenient to realize.
In order to solve the above technical problems, a kind of screw rod described in the utility model adjusts the pre-fastening structure of height, described
Pretightning force device includes transformer case, and shell includes upper cover, pedestal, is connected between upper cover and pedestal by the way that elastic component is mutually fixed
It connects；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity
Transformer posts downwards thermal coupling element on one side, applies in the mid-point position of the strip piezoelectric transformer equipped with pretightning force
Device；
The pretightning force device includes transformer case, and shell includes upper cover, pedestal, passes through bullet between upper cover and pedestal
Property part is mutually fixedly connected；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity
Transformer posts downwards thermal coupling element on one side, applies in the mid-point position of the strip piezoelectric transformer equipped with pretightning force
Device；
The pretightning force bringing device includes threaded rod, and fastener is equipped on the threaded rod, on the screw rod is prominent
Cap upper surface, fastener are installed on the protrusion of screw rod；Spring is equipped on the threaded rod, the spring one end resists
Lid, the other end are connected with piezoelectric transformer.
Further, the pretightning force bringing device is the threaded rod that is connected with strip piezoelectric transformer, and the elasticity is solid
Determining part is spring, and on the angle of upper cover and pedestal, the fastener setting and upper outer side of lid, upper lid are equipped with threaded rod for setting
Hole, for installing threaded rod.
Further, the thermal coupling element is copper sheet.
Further, heat-conducting insulating silicon fat pad is equipped between the thermal coupling element and transformer base.
The utility model beneficial effect is:
Compared with prior art, the utility model adjusts the pre-fastening structure of height for cooling fin by a kind of screw rod and presses
The position that piezoelectric transformer work mode displacement is 0 closely connects, and makes cooling fin before not influencing the piezoelectric transformer work vibration shape
It puts and radiates for piezoelectric transformer, and good heat dissipation effect, structure is simple, and it is convenient to realize.
By the cooperation of elastic component and threaded rod, keep pretightning force adjustable, is suitble under different cooling requirements use piezoelectricity
Transformer extends its use scope.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is further elaborated with reference to the accompanying drawing:
Common power chip inner core is directly anchored on shell, however for piezoelectric transformer, it is complete however
It is complete to fix the work for being equivalent to and attempting to stop piezoelectric transformer, it will the function that it is transmitted for piezoelectric transformer
Rate and efficiency generate strong influence.In order to guarantee the sufficiently free state of piezoelectric transformer operation, fixed point selection exists
The point that the mode displacement that works is 0, is fixed in dots as far as possible, can reduce the constraint to piezoelectric transformer vibration in this way,
This is the fixed method for being commonly recognized and receiving of piezoelectric transformer.Heat is passed well in order to realize while not being absorbed
The thermal coupling element i.e. conduction material that the vibrational energy and piezoelectric transformer of piezoelectric transformer operation directly contact, needs
Have good heat conductivity, the high characteristic of quality factor.The heating conduction of some liquid (such as silicone oil) is good, but too big because damping,
We do 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: while will pre-tighten example to be applied to another main surface resonance of piezoelectric transformer is position
The smallest point is moved, is the center of piezoelectric transformer for one first order mode of longitudinal resonance, what heat of piezoelectric transformer realized
The good contact of coupling element, the temperature for leading to heat transfer when reducing piezoelectric transformer work, reaches the mesh for improving transmitting power
's.
It is transferred heat away from simultaneously to realize with extraneous insulation, 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 production must be smooth as far as possible.The piezoelectric transformer electrode surface roughness Ra of prior art production≤
O.2 micron, the micron of piezoelectric transformer main surface plane degree error≤O.3 influence to reduce contact bring to the greatest extent, and pressure
The micron of the thermal coupling element main surface roughness Ra that piezoelectric transformer ground electrode main surface directly contacts≤O.2, 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 for example same electrode of ground electrode, and a monolith 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 using two pieces of thermal coupling elements to input/output section.
It is not same electrode strip piezoelectric transformer vibration 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 fastener.It will
Copper sheet is embedded into the design of silicone grease pad, and copper sheet can also be made to be in relatively fixed position, while ensure that the safety with shell
Insulation.Stablize for piezoelectric transformer ground electrode main surface and cooling fin main surface and be in close contact, while piezoelectric transformer being consolidated
It lives calmly, certain pretightning force need to be applied in another main surface of piezoelectric transformer, it can be cylinder or length that pretightning force, which applies medium,
Cube, general diameter or longest side length are less than the 1/10 of longest dimension.If pretightning force applies longest in medium main surface
Side applies medium not less than the pretightning force of Insulating gap and the contact of piezoelectric transformer main surface among piezoelectric transformer and is necessary 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 applies
Medium can be non-conducting material or conductive material, here it is proposed that using non-conducting material, because conductive material can reduce
The insulation characterisitic of input/output section.
Specifically, a kind of screw rod provided by the utility model adjusts the pre-fastening structure of height, the pretightning force device
It include transformer case, shell includes upper cover, pedestal, is mutually fixedly connected between upper cover and pedestal by elastic component；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity
Transformer posts downwards thermal coupling element on one side, applies in the mid-point position of the strip piezoelectric transformer equipped with pretightning force
Device.
Further, the pretightning force bringing device is the threaded rod that is connected with strip piezoelectric transformer, and the elasticity is solid
Determining part is spring, and on the angle of upper cover and pedestal, the fastener setting and upper outer side of lid, upper lid are equipped with threaded rod for setting
Hole, for installing threaded rod.The pretightning force device includes transformer case, and shell includes upper cover, pedestal, upper cover and pedestal
Between be mutually fixedly connected by elastic component；
Wherein, pedestal is provided inwardly with groove, and strip piezoelectric transformer is horizontally placed in groove, the strip piezoelectricity
Transformer posts downwards thermal coupling element on one side, applies in the mid-point position of the strip piezoelectric transformer equipped with pretightning force
Device；
The pretightning force bringing device includes threaded rod, and fastener is equipped on the threaded rod, on the screw rod is prominent
Cap upper surface, fastener are installed on the protrusion of screw rod；Spring is equipped on the threaded rod, the spring one end resists
Lid, the other end are connected with piezoelectric transformer.
Further, the thermal coupling element is copper sheet.
Further, heat-conducting insulating silicon fat pad is equipped between the thermal coupling element and transformer base.
By the cooperation of elastic component and threaded rod, keep pretightning force adjustable, is suitble under different cooling requirements use piezoelectricity
Transformer extends its use scope.
Above-mentioned is only preferred embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several modifications and adaptations can also be made, these modifications and adaptations
Also it should be regarded as the protection scope of the utility model.
Claims (4)
1. the pre-fastening structure that a kind of screw rod adjusts height, which is characterized in that the pre-fastening structure includes transformer case,
Shell includes upper cover, pedestal, is mutually fixedly connected between upper cover and pedestal by elastic component；
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, is equipped with pretightning force in the mid-point position of the strip piezoelectric transformer and applies dress
It sets；
The pretightning force bringing device includes threaded rod, and fastener is equipped on the threaded rod, and the screw rod protrudes on lid
Surface, fastener are installed on the protrusion of screw rod；Spring is equipped on the threaded rod, the spring one end resists upper cover,
The other end is connected with piezoelectric transformer.
2. the pre-fastening structure that a kind of screw rod according to claim 1 adjusts height, which is characterized in that the pretightning force is applied
Installation is set to the threaded rod that is connected with strip piezoelectric transformer, and the flexible fastening piece is spring, setting and upper cover and pedestal
Angle on, fastener setting and upper outer side of lid, upper lid is equipped with thread rod bores, for installing threaded rod.
3. the pre-fastening structure that a kind of screw rod according to claim 1 or 2 adjusts height, which is characterized in that the thermal coupling
Conjunction element is copper sheet.
4. the pre-fastening structure that a kind of screw rod according to claim 3 adjusts height, which is characterized in that the thermal coupling member
Heat-conducting insulating silicon fat pad is equipped between part and transformer base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820731152.2U CN208256728U (en) | 2018-05-17 | 2018-05-17 | A kind of screw rod adjusts the pre-fastening structure of height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820731152.2U CN208256728U (en) | 2018-05-17 | 2018-05-17 | A kind of screw rod adjusts the pre-fastening structure of height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208256728U true CN208256728U (en) | 2018-12-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820731152.2U Expired - Fee Related CN208256728U (en) | 2018-05-17 | 2018-05-17 | A kind of screw rod adjusts the pre-fastening structure of height |
Country Status (1)
| Country | Link |
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| CN (1) | CN208256728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493332A (en) * | 2018-05-17 | 2018-09-04 | 南京溧水得瑞微型电机厂 | A kind of screw rod adjusts the pre-fastening structure of height |
-
2018
- 2018-05-17 CN CN201820731152.2U patent/CN208256728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493332A (en) * | 2018-05-17 | 2018-09-04 | 南京溧水得瑞微型电机厂 | A kind of screw rod adjusts the pre-fastening structure of height |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20190517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |