CN114251353A - Asymmetric flexible hinge - Google Patents
Asymmetric flexible hinge Download PDFInfo
- Publication number
- CN114251353A CN114251353A CN202011020441.XA CN202011020441A CN114251353A CN 114251353 A CN114251353 A CN 114251353A CN 202011020441 A CN202011020441 A CN 202011020441A CN 114251353 A CN114251353 A CN 114251353A
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- China
- Prior art keywords
- flexible hinge
- hinge
- axis
- degree
- freedom
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- 239000000919 ceramic Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/12—Small applications, e.g. miniature bearings
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- 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
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/20—Optical, e.g. movable lenses or mirrors; Spectacles
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- 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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Micromachines (AREA)
Abstract
The invention relates to an asymmetric flexible hinge which comprises a flexible hinge main body and is characterized in that the flexible hinge main body is a rectangular cube, a pair of grooves which are symmetrical about an x axis are designed on the flexible hinge main body, the curve of each groove is a conical curve and is asymmetric about a y axis, and the distance between the vertexes (CD) of the two conical curves is the minimum thickness t of the flexible hinge. The size of the curve is determined by the height H of the flexible hinge body, and H is far larger than t, which is a basic unit of the flexible hinge. The multi-degree-of-freedom flexible hinge can be combined by a plurality of basic units to realize multi-degree-of-freedom micro-amplitude rotation or movement. The invention has the advantages of simple structure, regular shape and the like. Compared with the traditional arc flexible hinge, the flexible hinge has higher precision, and is particularly suitable for intelligent control mechanisms.
Description
Technical Field
The invention relates to the technical field of ultra-precise micromotion, in particular to an asymmetric flexible hinge.
Background
The mechanical hinge realizes deflection and movement between two rigid bodies through the contact of rolling bodies, has the problems of complex structure, larger size, low precision, poor sensitivity, friction heating and the like, and is not beneficial to ultra-precise motion control. The flexible hinge has the advantages of simple structure, quick response, high sensitivity, near-zero friction and the like, and is widely applied to the manufacturing fields of microelectronic manufacturing equipment, optical detection and the like.
Disclosure of Invention
Aiming at the defects and the improvement requirements in the prior art, the invention overcomes the defects of complex structure, poor precision, easy friction, heating and the like of the traditional mechanical hinge and designs the flexible hinge which has the advantages of simple structure, convenient manufacture, high precision, quick response, no friction and the like.
In order to achieve the purpose, the invention is realized by the following technical means: an asymmetric flexible hinge is designed, comprising a flexible hinge body, wherein: the main body of the flexible hinge is a rectangular cube, the main body of the flexible hinge is provided with a pair of grooves which are symmetrical about an x axis, and the curve lines of the grooves are conical curves and are asymmetrical about a y axis.
The distance between two conical curve vertexes (CD) of the flexible hinge is the minimum thickness t of the flexible hinge.
The size of the curve is determined by the height H of the flexible hinge body, and H is far larger than t, which is a basic unit of the flexible hinge.
The flexible hinge is an integral body formed by a plurality of basic units, and the axial directions of the plurality of basic units of the flexible hinge can be parallel or vertical. The flexible hinge composed of a plurality of basic units can complete multi-degree-of-freedom micro-amplitude rotation and movement.
The flexible hinge realizes rotation and movement through the action of actuators such as a piezoelectric ceramic structure or a voice coil motor and the like, and high-precision control is completed.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 shows the basic unit of an asymmetric flexible hinge 1.
Fig. 2 is a single axis single degree of freedom asymmetric flexible hinge.
Fig. 3 is a 2-axis 2-degree-of-freedom asymmetric flexible hinge.
Fig. 4 is a 3-axis 3-degree-of-freedom asymmetric flexible hinge.
Fig. 5 is a single degree of freedom asymmetric flexible hinge based on piezoelectric actuation.
Detailed Description
In order to explain the objects, aspects and advantages of the invention in more detail, the invention is explained in more detail below with the aid of exemplary embodiments and the accompanying drawings.
The embodiments described herein are merely illustrative, not restrictive, and the scope of the invention is not limited to these embodiments.
FIG. 1 shows 1 basic unit of the flexible hinge, the flexible hinge body is provided with a pair of grooves which are symmetrical about an x-axis, and the curve line of the grooves is a conical curve and is asymmetrical about a y-axis.
FIG. 2(a) is a single-axis single-degree-of-freedom flexible hinge composed of 2 basic units; fig. 2(b) is a uniaxial single degree of freedom flexible hinge (L-shape) composed of 2 basic units.
FIG. 3(a) is a 2-axis 2-degree-of-freedom flexible hinge (linear type) composed of 2 basic units; fig. 3(b) is a 2-axis 2-degree-of-freedom flexible hinge (L-shaped) composed of 2 basic units.
FIG. 4(a) is a 3-axis 3-degree-of-freedom flexible hinge (T-shaped) composed of 3 basic units; fig. 4(b) is a 3-axis 3-degree-of-freedom flexible hinge (Z-type) composed of 3 basic units.
Fig. 5 is a single piezoelectric drive based single degree of freedom asymmetric flexible hinge. Actuators such as a piezoelectric ceramic structure or a voice coil motor and the like are connected with the hinge at two ends, and the actuators such as the piezoelectric ceramic structure or the voice coil motor and the like control the micro-amplitude rotation and movement of the flexible hinge.
According to the structure of the attached drawings, more multi-axis multi-degree-of-freedom flexible hinges can be combined.
The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the drawings. Therefore, it is intended that all equivalents and modifications which do not depart from the spirit of the invention disclosed herein are deemed to be within the scope of the invention.
Claims (7)
1. The symmetrical flexible hinge is characterized in that a flexible hinge main body is a rectangular cube, a pair of grooves are symmetrically designed on the flexible hinge main body about an x axis, and the distance between two conical curve vertexes (CD) is the minimum thickness t of the flexible hinge.
2. The flexible hinge of claim 1, wherein the groove curve of the hinge is a conic curve, asymmetric about the y-axis.
3. The flexible hinge of claim 1, wherein said hinge is a single axis, single degree of freedom flexible hinge constructed of 1 basic unit.
4. The flexible hinge of claim 1, wherein said hinge is a 2-axis 2-degree-of-freedom flexible hinge constructed of 2 basic units.
5. The flexible hinge of claim 1, wherein said hinge is a 3-axis 3-degree-of-freedom flexible hinge constructed of 3 basic units.
6. The flexible hinge according to claim 1, wherein structural parameters of said hinge can be adjusted as desired.
7. The flexure hinge of claim 1, wherein the hinge is based on an actuator such as a piezo-ceramic structure or a voice coil motor to achieve a slight rotation or movement of the flexure hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020441.XA CN114251353A (en) | 2020-09-25 | 2020-09-25 | Asymmetric flexible hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020441.XA CN114251353A (en) | 2020-09-25 | 2020-09-25 | Asymmetric flexible hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114251353A true CN114251353A (en) | 2022-03-29 |
Family
ID=80789048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011020441.XA Withdrawn CN114251353A (en) | 2020-09-25 | 2020-09-25 | Asymmetric flexible hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114251353A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459740Y (en) * | 2000-12-15 | 2001-11-14 | 中国科学院西安光学精密机械研究所 | Flexible hinge |
| JP2001349323A (en) * | 2000-06-02 | 2001-12-21 | Sumitomo Heavy Ind Ltd | Elastic hinge |
| CN102871636A (en) * | 2004-06-07 | 2013-01-16 | 诺瓦尔外科系统公司 | Articulating mechanism with flex-hinged links |
| CN104999452A (en) * | 2015-06-26 | 2015-10-28 | 中国矿业大学 | Three-freedom-degree micro-operation robot |
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2020
- 2020-09-25 CN CN202011020441.XA patent/CN114251353A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349323A (en) * | 2000-06-02 | 2001-12-21 | Sumitomo Heavy Ind Ltd | Elastic hinge |
| CN2459740Y (en) * | 2000-12-15 | 2001-11-14 | 中国科学院西安光学精密机械研究所 | Flexible hinge |
| CN102871636A (en) * | 2004-06-07 | 2013-01-16 | 诺瓦尔外科系统公司 | Articulating mechanism with flex-hinged links |
| CN104999452A (en) * | 2015-06-26 | 2015-10-28 | 中国矿业大学 | Three-freedom-degree micro-operation robot |
Non-Patent Citations (1)
| Title |
|---|
| 翟自翔，刘 胜: ""基于ANSYS 的新型椭圆铰链疲劳仿真分析"", 《软件》, vol. 41, no. 6, pages 217 - 221 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220329 |
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| WW01 | Invention patent application withdrawn after publication |