CN207069937U - A kind of flexible displacement amplifying mechanism - Google Patents
A kind of flexible displacement amplifying mechanism Download PDFInfo
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- CN207069937U CN207069937U CN201721067362.8U CN201721067362U CN207069937U CN 207069937 U CN207069937 U CN 207069937U CN 201721067362 U CN201721067362 U CN 201721067362U CN 207069937 U CN207069937 U CN 207069937U
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- displacement
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Abstract
The utility model provides a kind of flexible displacement amplifying mechanism, including a displacement input lever, a displacement take-off lever and two slider-crank mechanisms；The displacement input lever and displacement take-off lever be arranged in parallel；One of them described slider-crank mechanism is connected to the left end of the displacement input lever and displacement take-off lever, and another described slider-crank mechanism is connected to the right-hand member of the displacement input lever and displacement take-off lever；Wherein each slider-crank mechanism includes respectively：The first connecting rod of the displacement input lever is connected to by flexible hinge, the second connecting rod of the displacement take-off lever is connected to by flexible hinge and the third connecting rod between a fix bar and the second connecting rod is connected to by flexible hinge, and the third connecting rod is also connected by flexible hinge with the first connecting rod.The utility model is applied to the displacement equations of Piezoelectric Driving, and simple in construction, and cost is low, and precision is high, and noise is small.
Description
Technical field
It the utility model is related to displacement amplification device, more particularly to a kind of flexible displacement amplifying mechanism.
Background technology
The translational speed of Piezoelectric Driving pipe machine people can amplify increase power to improve by using mechanical displacement.It is existing
On realizing that the mechanism of displacement equations has much in technology, two kinds are broadly divided into, one kind is realized using rigid linkage, separately
One kind is realized using compliant mechanism.Rigid linkage can realize the amplification of vertical direction input and output.For piezoelectricity this
For kind Micro-displacement Driving, according to rigid link mechanism, will inevitably there are gap, friction, abrasion simultaneously between part
And need to lubricate, the precision for causing mechanism is affected by these, and reliability reduces.In addition, rigid mechanism is to working environment
It is required that very harsh, its kinematic pair is easily influenceed by severe bad border；And rigid mechanism is assembled by each component, is made an uproar
Sound and oscillation phenomenon are more serious.
Compliant mechanism due to its it is unique the advantages of, be highly suitable for amplify piezoelectricity micro-displacement.Ouyang et al. is developed
A kind of displacement equations 1' based on symmetrical five-rod as shown in Figure 1.The amplification can realize input and output Vertical Square
To amplification, amplification ratio can reach 16, bigger than disymmetry four-bar mechanism amplification ratio under same case.But the displacement equations machine
The characteristics of structure is not suitable for the Piezoelectric Driving of pipe machine people, and it is not directed to pipe machine people and be designed, such as pressing
During electric pipe machine people, for the limited radial dimension of holding, it is necessary to consider the placement direction of Piezoelectric Driving, displacement equations need can be real
The amplification of existing equidirectional input and output displacement, and the device can only realize input and the amplification of output vertical direction.
Utility model content
For above-mentioned the deficiencies in the prior art, the utility model provides a kind of flexible displacement equations suitable for Piezoelectric Driving
Mechanism, to realize the amplification of equidirectional input and output displacement.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of flexible displacement amplifying mechanism, including a displacement input lever, a displacement take-off lever and two slider-crank mechanisms；
The displacement input lever and displacement take-off lever be arranged in parallel；
One of them described slider-crank mechanism is connected to the left end of the displacement input lever and displacement take-off lever, another
The slider-crank mechanism is connected to the right-hand member of the displacement input lever and displacement take-off lever；
Wherein each slider-crank mechanism includes respectively：The of the displacement input lever is connected to by flexible hinge
One connecting rod, the second connecting rod for being connected to by flexible hinge the displacement take-off lever and to be connected to one by flexible hinge solid
Third connecting rod between fixed pole and the second connecting rod, and the third connecting rod is also connected by flexible hinge and the first connecting rod
Connect.
Further, the flexible displacement amplifying mechanism is symmetrical.
Further, the second connecting rod flushes with the displacement take-off lever, and the first connecting rod and third connecting rod are outside
Tilt.
Further, the flexible hinge be semi-circular flexible hinge, oval flexible hinge, prismatic flexible hinge,
Any one of parabolic type flexible hinge and compound v notch v flexible hinge.
Further, the flexible displacement amplifying mechanism is integrally formed.
Further, the flexible displacement amplifying mechanism is made up of aluminium alloy.
Further, the size range of the flexible displacement amplifying mechanism is that width is 54mm, is highly 36mm, thickness is
10mm。
By using above-mentioned technical proposal, the utility model has the advantages that：
(1) it is simple in construction：The utility model can use a whole block material of given shape, pass through phase under external force
Deformation is formed, without other parts, without assembling.
(2) manufacturing cost is low：The utility model can greatly reduce the quantity of the part with specific function, these parts
Reduction can simplify manufacturing process, reduce manufacture and integrated time and expense.
(3) operating accuracy is high：Rigid hinge is replaced using flexible hinge, flexible hinge can be used as revolute pair to transmit
The motion needed, without setting up extra rotation width, can reduce fretting wear, can be reduced or eliminated in the course of the work
Gap, improve operating accuracy.
(4) noise is small：The utility model compared with rigid mechanism, can with reducing mechanism be driven and connect caused by vibration and
Noise.
(5) have a wide range of application：The utility model easily realizes miniaturization,, can in MEMS due to simple in construction
To make micro mechanism, micro drives and sensing, have broad application prospects.
Brief description of the drawings
Fig. 1 is the existing displacement amplifying mechanism based on symmetrical five-rod；
Fig. 2 is a kind of three-dimensional structure diagram of flexible displacement amplifying mechanism of the utility model；
Fig. 2A is the front view of flexible displacement amplifying mechanism in Fig. 2；
Fig. 3 is the principle schematic of slider-crank mechanism.
Fig. 4 is the principle schematic of flexible displacement amplifying mechanism in Fig. 2；
Embodiment
Below in conjunction with the accompanying drawings, preferably example, and being described in detail of the present utility model is provided, makes to be better understood when
Function of the present utility model, feature.
Fig. 2 and 2A shows that the utility model is applied to one embodiment of the flexible displacement amplifying mechanism of Piezoelectric Driving,
It is integrally formed by a monoblock aluminum alloy materials, and is configured to include a displacement input lever 1, a displacement take-off lever 2 and two songs
Handle slide block mechanism.Wherein, displacement input lever 1 and displacement take-off lever 2 be arranged in parallel, and it is defeated that a slider-crank mechanism is connected to displacement
Enter the left end of bar 1 and the left end of displacement take-off lever 2, another slider-crank mechanism is connected to right-hand member and the position of displacement input lever 1
The right-hand member of take-off lever 2 is moved, and whole flexible displacement amplifying mechanism is configured to bilateral symmetry.
In the present embodiment, each slider-crank mechanism includes respectively：It is defeated that displacement is connected to by the first flexible hinge 31
Enter the first connecting rod 41 of the left end of bar 1 (or right-hand member)；The left end of displacement take-off lever 2 (or right-hand member) is connected to by the second flexible hinge 32
Second connecting rod 42；And one end is connected to second connecting rod 42 by the 3rd flexible hinge 33, the other end passes through the 4th flexible hinge
Chain 34 connects the third connecting rod 43 of a fix bar 44 (it is fixed on the telecontrol equipment for needing displacement enlargement), wherein, first connects
Bar 41 is also connected by the 5th flexible hinge 35 with third connecting rod 43, so that wherein one section of third connecting rod 43 is connected to the first company
Between bar 41 and second connecting rod 42, another section is connected between first connecting rod 41 and fix bar 44.Also, second connecting rod 42 is shown
To be flushed with displacement take-off lever 2, first connecting rod 41 and third connecting rod 43 are outward-dipping, and it is substantially in five to make flexible displacement amplifying mechanism
Side shape, and fix bar 44 is shown as parallel with displacement input lever 1 and displacement take-off lever 2, sees Fig. 2.
In the utility model, each connecting rod is used for the transmission of power and displacement, the connection that each flexible hinge is used between connecting rod
And revolute pair is formed, displacement input lever 1 is with needing the telecontrol equipment (such as Piezoelectric Driving) of displacement enlargement to be connected, by entirely putting
The displacement of amplification is produced after great institutions from displacement take-off lever 2, the connection and displacement of wherein displacement input lever 1 and Piezoelectric Driving are defeated
The connection of rod 2 and other devices can use precompression compression or binding agent to connect, and keep contact surface seamless.Working
When, displacement caused by Piezoelectric Driving acts on the displacement input lever 1 of the mechanism, and connecting rod and flexible hinge produce motion, finally made
Obtain displacement take-off lever 2 and produce a displacement amplified in the same direction.Rigid hinge is replaced as a result of flexible hinge, is come by soft hinge
Motion needed for transmitting, friction can be reduced while displacement equations are realized, improve precision.
In the present embodiment, flexible hinge can select semi-circular, oval, prismatic, parabolic type and complex
Any one of breach flexible hinge etc..Wherein, semicircle flexible hinge as revolute pair when there is preferable center of rotation,
The plastic deformation that prismatic flexible hinge can be realized is larger.In addition to flexible hinge can deform, the remainder in mechanism
It is rigid, and rigidity is much larger than the rigidity of flexible hinge.
Amplification principle of the present utility model is as follows：Slider-crank mechanism can realize the vertical of input and output direction, choosing
Select the parameter of appropriate input and output position and adjustment mechanism, it is possible to achieve displacement equations.Conventional crank sliding block as shown in Figure 3
The principle schematic of mechanism：
Known l1、l2、a、θ1, can be in the hope of output displacement y and input angle θ1Between relation be：
I.e., it is possible to regard output displacement y as θ1Function：Y=f (θ).
The amplification ratio R that then slider-crank mechanism has at some angle moment is：
Pass through adjustment mechanism parameter l1、l2、a、θ1So that f'(θ) it is that amplification ratio R is more than 1, you can realize displacement equations
Function.That is, the length l of third connecting rod 43 in the utility model1, second connecting rod 42 length l2, the 4th flexible hinge 34 to the second
Angle theta between the horizontal range a of flexible hinge 32, third connecting rod 43 and horizontal line1Meet f'(θ) it is more than 1 i.e. achievable position
Move amplification.
From crank block above characteristic, compound using two crank blocks, achievable input and output are maintained at same
Individual direction.As shown in figure 4, motion principle is：When to first following upward position of flexible hinge 31 (equivalent to sliding block)
Move, first connecting rod 41 can be driven to move so that third connecting rod 43 rotates around fixing point, so that connecting rod 42 produces motion, band
Dynamic the second flexible hinge 32 (equivalent to sliding block) above produces upward displacement.Error can be reduced using symmetry principle again,
The compound symmetrical enlarger of five bars can be obtained, as shown in Figure 3.According to rigid body Shift Method by the rigidity of rigid link enlarger
Hinge is changed to flexible hinge use, obtains corresponding flexible amplification mechanism, as shown in Figure 2 A.
In a preferred embodiment, the long 54.20mm of this flexible displacement amplifying mechanism, wide 36.23mm, thickness 10mm,
Use this flexible displacement amplifying mechanism to realize the displacement equations that output displacement drives for 20 μm of piezoelectric stacks, make Piezoelectric Driving
The speed of friction inertia pipe machine people improves 4.5 times, (is avoided as far as possible at work for 2481Hz in the natural frequency of operative orientation
This working frequency, in order to avoid mechanism is destroyed), maximum stress 142Mpa when piezoelectricity input displacement is 10um, far below material
The yield stress 505Mpa of material.
It is above-described, preferred embodiment only of the present utility model, and non-limiting the scope of the utility model, this practicality
New above-described embodiment can also make a variety of changes.I.e. every claims and explanation according to the present utility model application
Simple, the equivalent changes and modifications that book content is made, fall within the claims of the utility model patent.This practicality
New not detailed description is regular content.
Claims (7)
1. a kind of flexible displacement amplifying mechanism, it is characterised in that including a displacement input lever, a displacement take-off lever and two realizations
The slider-crank mechanism of displacement equations；
The displacement input lever and displacement take-off lever be arranged in parallel；
One of them described slider-crank mechanism is connected to the left end of the displacement input lever and displacement take-off lever, described in another
Slider-crank mechanism is connected to the right-hand member of the displacement input lever and displacement take-off lever；
Wherein each slider-crank mechanism includes respectively：Be connected to the displacement input lever by flexible hinge first connects
Bar, the second connecting rod of the displacement take-off lever is connected to by flexible hinge and a fix bar is connected to by flexible hinge
With the third connecting rod between the second connecting rod, and the third connecting rod is also connected by flexible hinge with the first connecting rod.
2. flexible displacement amplifying mechanism according to claim 1, it is characterised in that described flexible displacement amplifying mechanism or so
Symmetrically.
3. flexible displacement amplifying mechanism according to claim 1, it is characterised in that the second connecting rod and the displacement are defeated
Rod flushes, and the first connecting rod and third connecting rod are outward-dipping.
4. flexible displacement amplifying mechanism according to claim 1, it is characterised in that the flexible hinge is semi-circular flexibility
In hinge, oval flexible hinge, prismatic flexible hinge, parabolic type flexible hinge and compound v notch v flexible hinge
It is any.
5. flexible displacement amplifying mechanism according to claim 1, it is characterised in that the flexible displacement amplifying mechanism one
Shaping.
6. flexible displacement amplifying mechanism according to claim 1, it is characterised in that the flexible displacement amplifying mechanism is by aluminium
Alloy is made.
7. flexible displacement amplifying mechanism according to claim 1, it is characterised in that the flexible displacement amplifying mechanism width
For 54mm, highly be 36mm, thickness 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721067362.8U CN207069937U (en) | 2017-08-24 | 2017-08-24 | A kind of flexible displacement amplifying mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721067362.8U CN207069937U (en) | 2017-08-24 | 2017-08-24 | A kind of flexible displacement amplifying mechanism |
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| Publication Number | Publication Date |
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| CN207069937U true CN207069937U (en) | 2018-03-02 |
Family
ID=61516574
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| CN201721067362.8U Expired - Fee Related CN207069937U (en) | 2017-08-24 | 2017-08-24 | A kind of flexible displacement amplifying mechanism |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296629A (en) * | 2018-11-26 | 2019-02-01 | 中国科学院光电技术研究所 | A kind of flexible hinge structure |
| CN110500980A (en) * | 2018-05-17 | 2019-11-26 | 技鼎股份有限公司 | Displacement amplification device and displacement amplifier |
| CN110500979A (en) * | 2018-05-17 | 2019-11-26 | 技鼎股份有限公司 | Displacement amplification device and displacement amplifier |
| CN112196756A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Piezoelectric stack double-plunger pump capable of amplifying swing |
| CN114212524A (en) * | 2021-12-24 | 2022-03-22 | 上海精测半导体技术有限公司 | Flexible hinge assembly and substrate lifting mechanism |
| CN114337365A (en) * | 2021-01-11 | 2022-04-12 | 西安交通大学 | Compact differential type flexible displacement reducing mechanism |
-
2017
- 2017-08-24 CN CN201721067362.8U patent/CN207069937U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500980A (en) * | 2018-05-17 | 2019-11-26 | 技鼎股份有限公司 | Displacement amplification device and displacement amplifier |
| CN110500979A (en) * | 2018-05-17 | 2019-11-26 | 技鼎股份有限公司 | Displacement amplification device and displacement amplifier |
| CN109296629A (en) * | 2018-11-26 | 2019-02-01 | 中国科学院光电技术研究所 | A kind of flexible hinge structure |
| CN112196756A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Piezoelectric stack double-plunger pump capable of amplifying swing |
| CN112196756B (en) * | 2020-10-04 | 2022-03-29 | 长春工业大学 | Piezoelectric stack double-plunger pump capable of amplifying swing |
| CN114337365A (en) * | 2021-01-11 | 2022-04-12 | 西安交通大学 | Compact differential type flexible displacement reducing mechanism |
| CN114337365B (en) * | 2021-01-11 | 2024-05-03 | 西安交通大学 | Compact differential flexible displacement shrinking mechanism |
| CN114212524A (en) * | 2021-12-24 | 2022-03-22 | 上海精测半导体技术有限公司 | Flexible hinge assembly and substrate lifting mechanism |
| CN114212524B (en) * | 2021-12-24 | 2023-08-22 | 上海精测半导体技术有限公司 | Flexible hinge assembly and substrate lifting mechanism |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20180824 |