WO2021130506A1 - Shape memory alloy actuation apparatus - Google Patents
Shape memory alloy actuation apparatus Download PDFInfo
- Publication number
- WO2021130506A1 WO2021130506A1 PCT/GB2020/053376 GB2020053376W WO2021130506A1 WO 2021130506 A1 WO2021130506 A1 WO 2021130506A1 GB 2020053376 W GB2020053376 W GB 2020053376W WO 2021130506 A1 WO2021130506 A1 WO 2021130506A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- helical
- bearing
- sma
- axis
- actuation apparatus
- Prior art date
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims description 109
- 230000008602 contraction Effects 0.000 claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims description 84
- 238000005096 rolling process Methods 0.000 claims description 65
- 230000003287 optical effect Effects 0.000 claims description 17
- 230000001419 dependent effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 11
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000012858 resilient material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
- F03G7/0614—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using shape memory elements
- F03G7/06143—Wires
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/063—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the mechanic interaction
- F03G7/0633—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the mechanic interaction performing a rotary movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/063—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the mechanic interaction
- F03G7/0636—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the mechanic interaction with several elements connected in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/066—Actuator control or monitoring
- F03G7/0665—Actuator control or monitoring controlled displacement, e.g. by using a lens positioning actuator
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
Definitions
- Fig. 4 is a schematic cross-sectional view of the actuator assembly with different helical bearing arrangements
- Fig. 33 is a perspective view of an alternative helical bearing arrangement
- bearing in some embodiments of the present disclosure, more than one type of bearing element may be used in combination to provide the bearing functionality. Accordingly, the term "bearing” used herein includes any combination of, for example, plain bearings, ball bearings, roller bearings and flexures.
- the first and second helical bearings 46 and 47 are of the same type as the helical bearing 30 shown in Fig. 2 wherein the bearing surfaces 31 and 32 each comprise respective grooves 34 and 35.
- Fig. 11 illustrates an example of the helical bearing arrangement 20 of the actuator assembly 1 shown in Fig. 9, wherein the static part 2 and the lens element 10 are formed by moulded components.
- the detailed form of the static part 2, the lens element 10 and the helical bearings 30 can be seen.
- Fig. 17 illustrates another possible helical bearing arrangement that is a modification of the helical bearing arrangement of Fig. 7.
- the helical bearing arrangement includes four helical bearings 46 to 49 only, and the four helical bearings 46 to 49 are equally angularly spaced around the helical axis H, but they could alternatively be spaced unequally.
- the first bearing surface 101 is formed on a flexure element 104 that is connected to the lens element 10 or the support structure 2.
- the flexure element 104 is made of a resilient material, typically metal such as steel, and is connected to the adjacent part of the lens element 10 or the support structure 2.
- the flexure element 104 is a resilient element which both allows the movement of the first bearing surface 101 with respect to the adjacent support structure 2 or lens element 10 and acts as a resilient loading arrangement that resiliently loads the first bearing surface 101 away from the adjacent part of the lens element 10 or the support structure 2, against the rolling bearing element 103.
- helical flexure bearing 1090' acts to convert a relative displacement parallel to the primary axis z into a rotation about the primary axis z and to convert a rotation about the primary axis z into a relative displacement parallel to the primary axis z. These movements are not independent of one another. Relative to clamped pads 1093i', 10932', 10933', 10934', the circular annulus 1091' is constrained to move along an approximately helical path.
- the crimp arms 119' extend away from the helical axis H and generally towards the corners C of the actuator assembly 1 (from the circular annulus 1091').
- the crimp arms 119' are generally flat and coplanar with the circular annulus 1091' (i.e. the crimp arms 119' and the circular annulus 1091' sit on a common plane perpendicular to the primary axis z).
- the static part 2 may have four pillars (not shown but comparable to pillars 152i, 1522, 1523, 1524 in Fig. 34B), each upstanding (in the positive z direction) from a respective corner C of the base 4.
- Each pillar has a connection portion 18' (e.g. crimps, also referred to herein as "static crimps").
- the four pillars may be integrally formed with the base 4 or attached to the base 4 using welding, adhesive or other suitable attachment methods.
- the flexure arms 1092', the movable crimps 19', the static crimps 18' and the SMA actuator wires 60' have a two-fold rotational symmetry around the helical axis H.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
- Transmission Devices (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Manipulator (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20838280.4A EP4081710A1 (en) | 2019-12-26 | 2020-12-29 | Shape memory alloy actuation apparatus |
| CN202080090383.XA CN115103959A (zh) | 2019-12-26 | 2020-12-29 | 形状记忆合金致动装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1919340.8 | 2019-12-26 | ||
| GBGB1919340.8A GB201919340D0 (en) | 2019-12-26 | 2019-12-26 | Shape memory alloy actuation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2021130506A1 true WO2021130506A1 (en) | 2021-07-01 |
| WO2021130506A8 WO2021130506A8 (en) | 2022-10-13 |
Family
ID=69322965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB2020/053376 WO2021130506A1 (en) | 2019-12-26 | 2020-12-29 | Shape memory alloy actuation apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4081710A1 (zh) |
| CN (1) | CN115103959A (zh) |
| GB (1) | GB201919340D0 (zh) |
| WO (1) | WO2021130506A1 (zh) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069986A (ja) * | 2002-08-06 | 2004-03-04 | Sony Corp | ブレーキ部材の駆動機構、レンズ移動機構、カメラおよび電子機器 |
| US20050046965A1 (en) * | 2003-09-03 | 2005-03-03 | Sony Corporation | Switching mechanism and electronic instrument using the same |
| JP2006267178A (ja) * | 2005-03-22 | 2006-10-05 | Matsushita Electric Ind Co Ltd | レンズ駆動装置および駆動装置 |
| WO2007113478A1 (en) | 2006-03-30 | 2007-10-11 | 1...Limited | Camera lens actuation apparatus |
| WO2008099155A1 (en) * | 2007-02-12 | 2008-08-21 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2010029316A2 (en) | 2008-09-12 | 2010-03-18 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2010089529A1 (en) | 2009-02-09 | 2010-08-12 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2011104518A1 (en) | 2010-02-26 | 2011-09-01 | Cambridge Mechatronics Limited | Sma actuation apparatus |
| WO2012020212A1 (en) | 2010-08-09 | 2012-02-16 | Cambridge Mechatronics Limited | Camera apparatus |
| WO2012038703A2 (en) | 2010-09-22 | 2012-03-29 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2012066285A1 (en) | 2010-11-18 | 2012-05-24 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2013175197A1 (en) | 2012-05-25 | 2013-11-28 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2014076463A1 (en) | 2012-11-14 | 2014-05-22 | Cambridge Mechatronics Limited | Control of an sma actuation apparatus |
| GB2570358A (en) * | 2018-01-22 | 2019-07-24 | Cambridge Mechatronics Ltd | Shape memory alloy actuation apparatus |
| WO2019243849A1 (en) | 2018-06-21 | 2019-12-26 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8441749B2 (en) * | 2009-02-09 | 2013-05-14 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| CN109975972B (zh) * | 2017-12-28 | 2022-09-16 | 宁波舜宇光电信息有限公司 | 驱动方法、驱动结构及其装配方法、马达以及摄像模组 |
-
2019
- 2019-12-26 GB GBGB1919340.8A patent/GB201919340D0/en not_active Ceased
-
2020
- 2020-12-29 WO PCT/GB2020/053376 patent/WO2021130506A1/en unknown
- 2020-12-29 EP EP20838280.4A patent/EP4081710A1/en active Pending
- 2020-12-29 CN CN202080090383.XA patent/CN115103959A/zh active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069986A (ja) * | 2002-08-06 | 2004-03-04 | Sony Corp | ブレーキ部材の駆動機構、レンズ移動機構、カメラおよび電子機器 |
| US20050046965A1 (en) * | 2003-09-03 | 2005-03-03 | Sony Corporation | Switching mechanism and electronic instrument using the same |
| JP2006267178A (ja) * | 2005-03-22 | 2006-10-05 | Matsushita Electric Ind Co Ltd | レンズ駆動装置および駆動装置 |
| WO2007113478A1 (en) | 2006-03-30 | 2007-10-11 | 1...Limited | Camera lens actuation apparatus |
| WO2008099155A1 (en) * | 2007-02-12 | 2008-08-21 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2010029316A2 (en) | 2008-09-12 | 2010-03-18 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2010089529A1 (en) | 2009-02-09 | 2010-08-12 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2011104518A1 (en) | 2010-02-26 | 2011-09-01 | Cambridge Mechatronics Limited | Sma actuation apparatus |
| WO2012020212A1 (en) | 2010-08-09 | 2012-02-16 | Cambridge Mechatronics Limited | Camera apparatus |
| WO2012038703A2 (en) | 2010-09-22 | 2012-03-29 | Cambridge Mechatronics Limited | Optical image stabilisation |
| WO2012066285A1 (en) | 2010-11-18 | 2012-05-24 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2013175197A1 (en) | 2012-05-25 | 2013-11-28 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| WO2014076463A1 (en) | 2012-11-14 | 2014-05-22 | Cambridge Mechatronics Limited | Control of an sma actuation apparatus |
| GB2570358A (en) * | 2018-01-22 | 2019-07-24 | Cambridge Mechatronics Ltd | Shape memory alloy actuation apparatus |
| WO2019243849A1 (en) | 2018-06-21 | 2019-12-26 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021130506A8 (en) | 2022-10-13 |
| CN115103959A8 (zh) | 2022-12-16 |
| CN115103959A (zh) | 2022-09-23 |
| EP4081710A1 (en) | 2022-11-02 |
| GB201919340D0 (en) | 2020-02-05 |
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