CN105605091A - Large-damping flexible hinge with U-shaped structure - Google Patents
Large-damping flexible hinge with U-shaped structure Download PDFInfo
- Publication number
- CN105605091A CN105605091A CN201610182539.2A CN201610182539A CN105605091A CN 105605091 A CN105605091 A CN 105605091A CN 201610182539 A CN201610182539 A CN 201610182539A CN 105605091 A CN105605091 A CN 105605091A
- Authority
- CN
- China
- Prior art keywords
- shaped structure
- damping
- flexible hinge
- material layer
- hinge
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a large-damping flexible hinge with a U-shaped structure. The large-damping flexible hinge comprises a first hinge connecting end and a second hinge connecting end which are connected with a flexible mechanism, and further comprises the U-shaped structure connected between the first hinge connecting end and the second hinge connecting end, wherein a plurality of plate type restraint material layers are arranged on the inner walls of both opposite sides of the U-shaped structure from top to bottom in parallel; one ends of adjacent restraint material layers are respectively fixed on the inner walls of different sides, and the other ends are free ends; a viscoelasticity damping material layer is contained between the adjacent restraint material layers. According to a flexible hinge model, under the condition of meeting the requirements on the rigidity, the rotating angle and the like of a hinge, by additional arrangement of viscoelasticity damping materials, due to the adoption of a design mode of restraint damping layers and the full use of a shear energy consumption effect of the materials on the damping layers, the structural damping of the flexible hinge is enhanced, and a passive shock absorption effect of a flexible mechanism is achieved.
Description
Technical field
The present invention relates to a kind ofly convert power input to displacement input there is restore funcitons and have compared with macrostructureThe large flexibility turning joint of damping, is mainly used in the instrument and meter such as precision drive and precision positioning.
Background technology
Flexible hinge refers under the effect of external force or moment, utilizes the strain of material at adjacent rigid barBetween produce a kind of kinematic pair version of relative motion, the structure of this and conventional rigid kinematic pair has very very much notWith. Than traditional rigid hinge (mechanism), flexible hinge and compliant mechanism have many advantages: (1) canIntegrated design and processing, therefore can simplified structure, reduce volume and weight, avoid assembling; (2) gaplessAnd friction, can realize high-precision motion; (3) avoid wearing and tearing, improve the life-span; (4) avoid lubricating, avoid polluting;(5) can increase the rigidity of structure.
But, exactly because gapless without features such as frictions, the structural damping of flexible hinge is very low, even canIgnore, this cannot be inhibited the vibratory response producing in mechanism driving process. Even micro-nanoUnder micro-nano hi-Fix requires, mechanism stress vibration can make microposition effect be affected. CauseThis, in order to overcome this weakness, the present invention proposes a kind of large damping flexible hinge model, is meeting the firm of hingeDegree, rotational angle etc. by additional visco-elastic damping material, adopt restrictive damping layer Design Mode under requiring,Make full use of the shear energy dissipation effect of damping layer material, to increase the structural damping of flexible hinge, realize passive vibration dampingEffect.
Summary of the invention
Little in order to overcome existing hinge arrangement damping, easily produce vibration, affect the weakness of positioning precision, the present inventionA kind of large damping flexible hinge model is proposed, under the rigidity, the rotational angle etc. that meet hinge require, by outsideAdd visco-elastic damping material, adopt restrictive damping layer Design Mode, make full use of the shearing consumption of damping layer materialEnergy effect, to increase the structural damping of flexible hinge, realizes passive effectiveness in vibration suppression.
The technical solution adopted for the present invention to solve the technical problems is:
The large damping flexible hinge of a kind of U-shaped structure, comprise the first chain connection end for connecting compliant mechanism,The second chain connection end, also comprises the U being connected between described the first chain connection end and the second chain connection endType structure, is provided with some tabular constraints from top to bottom on the relative both sides inwall of described U-shaped structure abreastMaterial layer, one end of adjacent constraint material layer is fixed on the inwall of homonymy not separately, and the other end is free end,Between adjacent constraint material layer, be filled with visco-elastic damping material layer.
Further, on the both sides inwall of described U-shaped structure, from top to bottom relatively stagger be provided with someFor embedding the jaw that constraint material layer is installed.
Further, described jaw and U-shaped structure are integral type structure.
Further, the material of described constraint material layer is aluminum alloy flake.
Further, the material of described visco-elastic damping material layer is butyl rubber.
Compared to existing technology, the invention has the beneficial effects as follows:
(1) can obtain and have certain structural damping, it is anti-that the compliant mechanism self that makes to apply this hinge has vibration dampingShake ability;
(2) the large I of structural damping value of institute's invention flexible hinge is by change structure gain of parameter, specificallyBy changing number of plies amount and the layer thickness of visco-elastic damping material, correspondingly adjust the number of plies amount of constraint material.
Brief description of the drawings
Fig. 1 is that the U-shaped large damping flexible hinge master of the embodiment of the present invention 1 looks schematic diagram.
Fig. 2 is the U-shaped large damping flexible hinge schematic perspective view of the embodiment of the present invention 1.
Fig. 3 is that the U-shaped large damping flexible hinge master of the embodiment of the present invention 2 looks schematic diagram.
Fig. 4 is the U-shaped large damping flexible hinge schematic perspective view of the embodiment of the present invention 2.
Shown in figure, be: 1. the first chain connection end, 2. visco-elastic damping material layer, 3. constraint material layer, 4Two hinge link, 5. jaw, 6.U type structure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, goal of the invention of the present invention is described in further detail embodimentCan not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
Embodiment 1
As shown in Figures 1 and 2, the large damping flexible hinge of a kind of U-shaped structure, comprises for connecting flexible machineThe first chain connection end 1 of structure, the second chain connection end 4, also comprise and be connected in described the first chain connection end1 and second U-shaped structure 6 between chain connection end 4, forms flexible hinge block mold, tabular constraintMaterial layer 3 from top to bottom arranges on the relative both sides inwall of described U-shaped structure 6 abreast, now, adjacentOne end of constraint material layer 3 is fixed on the inwall of homonymy not separately, and the other end is free end, described UOn the inwall of the arranged on left and right sides of type structure 6, from top to bottom relatively stagger be respectively provided with two and three forEmbed the jaw 5 that constraint material layer 3 is installed, on each jaw 5, be equipped with a slice constraint material 3, totally five,Between adjacent constraint material layer 3, be filled with visco-elastic damping material layer 2.
Described jaw 5, the first chain connection end 1, the second chain connection end 4, U-shaped structure 6 are integral type knotStructure, has ensured the feature of integrated design and the processing of flexible hinge.
In the present embodiment, the material selection aluminum alloy flake of described constraint material layer 3.
In the present embodiment, the material selection butyl rubber of described visco-elastic damping material layer 2.
Between every constraint material layer 3, be filled with visco-elastic damping material layer 2, constraint material layer 3 and viscoplasticityDamping material layer 2 combines by the adhesion of damping material. When being subject to external force, flexible hinge bends, and willDrive two adjacent constraint material layers 3 to move in the opposite direction, therefore, be filled in constraint material layer 3Between visco-elastic damping material layer 2 by pushing, detrusion, the interior friction that has increased molecule in material,Under certain frequency, will show larger damped coefficient, produce obvious effectiveness in vibration suppression.
Described visco-elastic damping material layer 2 relies on adhesion and 3 adhesions of described constraint material. Every constraint materialOne end of layer 3 is fixed in the jaw 5 of U-shaped structure 6 inner sides, and the other end is free end. Five constraint materialsThe bed of material 3 is cross-linked in U-shaped structure 6 inner sides. The first chain connection end 1 of flexible hinge, the second hinge connectConnect end and 4 all can be used as input/output terminal, the real work situation of Shi Suo bindiny mechanism and determining. When one end wherein hasThe input of power, while producing displacement output, there are opening opening and closing in the U-shaped structure 6 of hinge, drives constraint material layer 3Occur relative displacement, between constraint material layer 3 fill visco-elastic damping material layer 2 due to adhesion effect,Can be along with 3 slippage of constraint material layer, material internal produces strong shear effect, produces according to viscoelastic materialThe mechanism of damping, the vibrational energy producing in compliant mechanism transmission process will be by the viscoplasticity material in hingeMaterial absorbs and is converted into heat and is dissipated in air.
Viscoelastic material refers to the material simultaneously with viscous fluid and elastic solid (Hookean body) two aspect character, industrialWith in our daily life, have the material much with viscoelastic material, industry as common in rubber, plastics etc.Material also has the biomaterial such as blood, muscle, and macromolecular material viscoelasticity property performance is the most obvious, asElastomeric material and plastic material, this is that macromolecular material in general all because its unique structure determinesBe to form chain molecule by little molecular cell by covalent bond, chain molecule is wound around mutually or connects by chemical bondTogether, form the network structure of space three-dimensional, macromolecular material molecular weight is generally all very large, is typical poly-Compound, the relative motion between molecule often occurs, and interior molecules unit also can rotate, under external force,Material stretches, reverses, and after external force is cancelled, molecule progressively restores to the original state, and discharges external work,This belongs to the elasticity of macromolecular material, but due to the network structure of macromolecular material space uniqueness, between molecule, sends outRaw slippage, reverse and can not restore completely, material generation permanent deformation, Here it is macromolecular material stickyProperty, and this part energy finally can be converted into heat energy and is dispersed in air, Here it is, and macromolecular material produces resistanceBuddhist nun's reason. Produce the mechanism of damping by means of viscoelastic material, the present embodiment adopts constrained layer damping structure,On the visco-elastic damping material layer 2 being covered on bent member, cover in addition one deck elastomeric layer,Constraint material layer 3, in the time that hinge bends rotation, visco-elastic damping material layer 2 is forced to be obedient to adjacent both sidesThe shape of construction unit, make damping layer produce shear strain, under alternate load effect, compared with low shearingSingle free layer damping processing of load will produce larger dissipation.
The main body of hinge described in the present embodiment, comprises the first chain connection end 1, the second chain connection end 4, UThe jaw 5 of type structure 6, U-shaped structure 6 inner sides, is one-body molded by line cutting technology, has ensured flexible hingeThe integrated design of chain and the feature of processing.
Because the piezoelectric ceramic actuator driving force in compliant mechanism is large, fast response time, swashs once be subject to signalSend out, easily submissive locating platform is produced and impacted, and the structural damping of submissive locating platform is very little, underdamping systemThe unified dawn produces impact shock, and residual oscillation can continue the long period. Therefore the present embodiment is mainly used in that this type of is easyCause the compliant mechanism locating platform of high frequency flutter, on the one hand as mechanism cradle head, play on the other hand and press downThe effect of platform flutter processed.
Embodiment 2
As shown in Figure 3 to Figure 4, the difference of the present embodiment and embodiment 1 is: described U-shaped structure (6)The inwall of arranged on left and right sides on from top to bottom relatively stagger respectively and be provided with one and two for embedding installationThe jaw 5 of constraint material layer 3, is equipped with a slice constraint material 3 on each jaw 5, and totally three, this enforcementIt is lower that example is mainly used in compliant mechanism high frequency flutter degree, in the less situation of needed structural damping value.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not to thisThe restriction of working of an invention mode. For those of ordinary skill in the field, on the basis of above-mentioned explanationOn can also make other changes in different forms. Here without also giving all embodimentsWith exhaustive. All any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., allWithin should being included in the protection domain of the claims in the present invention.
Claims (5)
1. the large damping flexible hinge of U-shaped structure, comprises the first chain connection for connecting compliant mechanismEnd (1), the second chain connection end (4), is characterized in that: also comprise and be connected in described the first chain connection end(1) the U-shaped structure (6) between and the second chain connection end (4), described U-shaped structure (6) relative twoOn side inwall, be provided with abreast some tabular constraint material layers (3) from top to bottom, adjacent constraint material layer (3)One end be fixed on separately on the inwall of homonymy not, the other end is free end, adjacent constraint material layer (3)Between be filled with visco-elastic damping material layer (2).
2. the large damping flexible hinge of the U-shaped structure of one according to claim 1, is characterized in that: instituteOn the both sides inwall of the U-shaped structure (6) of stating, from top to bottom relatively staggering, it is some for embedding installation to be approximately provided withThe jaw (5) of beam material layer 3.
3. the large damping flexible hinge of the U-shaped structure of one according to claim 1, is characterized in that: instituteStating jaw (5), the first chain connection end (1), the second chain connection end (4), U-shaped structure (6) is integratedFormula structure.
4. the large damping flexible hinge of the U-shaped structure of one according to claim 1, is characterized in that: instituteThe material of the constraint material layer (3) of stating is aluminum alloy flake.
5. the large damping flexible hinge of the U-shaped structure of one according to claim 1, is characterized in that: instituteThe material of stating visco-elastic damping material layer (2) is butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182539.2A CN105605091B (en) | 2016-03-25 | 2016-03-25 | A kind of big damping flexible hinge of U-shaped structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182539.2A CN105605091B (en) | 2016-03-25 | 2016-03-25 | A kind of big damping flexible hinge of U-shaped structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105605091A true CN105605091A (en) | 2016-05-25 |
| CN105605091B CN105605091B (en) | 2019-04-09 |
Family
ID=55985305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610182539.2A Active CN105605091B (en) | 2016-03-25 | 2016-03-25 | A kind of big damping flexible hinge of U-shaped structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105605091B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401558A (en) * | 2017-08-30 | 2017-11-28 | 华南理工大学 | A kind of submissive hinge of pectination damping structure breach type |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010037538A1 (en) * | 1996-11-19 | 2001-11-08 | Bernard Duperray | Automotive, self-locking and damping articulated joint and articulation equipped with same |
| CN1918401A (en) * | 2004-02-06 | 2007-02-21 | 皇家飞利浦电子股份有限公司 | Elastic interface device |
| CN201246527Y (en) * | 2008-08-26 | 2009-05-27 | 王鹏 | High-pressure vertical tube flexible U-shaped clip |
| CN202418386U (en) * | 2011-12-20 | 2012-09-05 | 中国飞机强度研究所 | Grid type vibration isolator |
| CN205618535U (en) * | 2016-03-25 | 2016-10-05 | 华南理工大学 | Flexible hinge of big damping of U type structure |
-
2016
- 2016-03-25 CN CN201610182539.2A patent/CN105605091B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010037538A1 (en) * | 1996-11-19 | 2001-11-08 | Bernard Duperray | Automotive, self-locking and damping articulated joint and articulation equipped with same |
| CN1918401A (en) * | 2004-02-06 | 2007-02-21 | 皇家飞利浦电子股份有限公司 | Elastic interface device |
| CN201246527Y (en) * | 2008-08-26 | 2009-05-27 | 王鹏 | High-pressure vertical tube flexible U-shaped clip |
| CN202418386U (en) * | 2011-12-20 | 2012-09-05 | 中国飞机强度研究所 | Grid type vibration isolator |
| CN205618535U (en) * | 2016-03-25 | 2016-10-05 | 华南理工大学 | Flexible hinge of big damping of U type structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401558A (en) * | 2017-08-30 | 2017-11-28 | 华南理工大学 | A kind of submissive hinge of pectination damping structure breach type |
| CN107401558B (en) * | 2017-08-30 | 2024-01-23 | 华南理工大学 | Notch type compliant hinge with comb-shaped damping structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105605091B (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101297112B (en) | Wind turbine blade including one or more vibration dampers | |
| Chen et al. | Dynamics analysis of a crowned gear transmission system with impact damping: Based on experimental transmission error | |
| CN102782359B (en) | Vibration isolation structure | |
| CN1350106A (en) | Hinge | |
| CN107327242A (en) | A kind of assistance type damper, damper assembly and cover board arrangement | |
| CN105339702A (en) | Vibration-damping structure | |
| CN205618535U (en) | Flexible hinge of big damping of U type structure | |
| CN101491899A (en) | Five freedom-degree paralleled robot | |
| CN105605091A (en) | Large-damping flexible hinge with U-shaped structure | |
| CN103426356B (en) | A kind of coupled mode four-degree-of-freedom motion simulation platform | |
| CN110762150A (en) | Shock absorber | |
| CN109537754A (en) | Viscoplasticity rotary type Damper Braces and its working method | |
| CN201627863U (en) | Rubber shock absorber for engineering machinery | |
| CN202577650U (en) | Rotary viscous fluid damper | |
| CN106286673B (en) | A kind of multi-state matching adaptive inversion gesture safeguard construction | |
| JPWO2019106892A1 (en) | Composite vibration isolator and composite vibration isolator with metal spring using the same | |
| CN204472561U (en) | A kind of fuel tank assembly and fuel tank anchor fitting thereof | |
| CN209115632U (en) | Flexible metal gear and steering engine | |
| CN114245624A (en) | Electric vehicle controller convenient to maintenance | |
| CN109236983A (en) | Flexible metal gear and steering engine | |
| CN1594910A (en) | Friction damper | |
| CN204001261U (en) | Vibrations snubber device | |
| Allen et al. | Automotive damper model for use in multi-body dynamic simulations | |
| CN114688193B (en) | Buffering and damping structure based on paper folding principle | |
| CN100529438C (en) | Symmetry type oscillating drive flexible mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |