Piezoelectric driving device for motor, motor, robot, and pump
US-2016365809-A1 · Dec 15, 2016 · US
Piezoelectric motor, drive unit, electronic part transfer apparatus, electronic part inspection apparatus, robot, and printer
US9331263B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9331263-B2 |
| Application number | US-201213693421-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2012 |
| Priority date | Dec 6, 2011 |
| Publication date | May 3, 2016 |
| Grant date | May 3, 2016 |
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- Title
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Abstract
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A piezoelectric motor includes a piezoelectric element, an oscillating plate including the piezoelectric element, a driving projection provided at an end of the oscillating plate, and a driven member driven by the driving projection coming into abutment therewith and is characterized in that Young's modulus E1 of the driving projection and Young's modulus E2 of the driven member are different.
First claim
Opening claim text (preview).
What is claimed is: 1. A piezoelectric motor comprising: an oscillating portion including a piezoelectric element and configured to oscillate; a driving projection provided on the oscillating portion and projecting from the oscillating portion; and a driven member with which the driving projection comes into abutment, wherein Young's modulus E1 of the driving projection and Young's modulus E2 of the driven member have a relationship of E1≠E2. 2. The piezoelectric motor according to claim 1 , wherein the Young's modulus E1 of the driving projection and the Young's modulus E2 of the driven member have a relationship of E1<E2. 3. The piezoelectric motor according to claim 1 , wherein the driving projection and the driven member are formed of the same component but sintered at different temperatures. 4. The piezoelectric motor according to claim 1 , wherein the driving projection and the driven member are formed of materials different in Young's modulus. 5. The piezoelectric motor according to claim 1 , wherein the driving projection and the driven member includes magnesium oxide (MgO) and aluminum oxide (Al 2 O 3 ), and at least areas from surface portions thereof coming into abutment with each other until a depth of 200 nm have the Young's modulus E1 or the Young's modulus E2. 6. A piezoelectric motor comprising: an oscillating portion including a piezoelectric element and configured to oscillate; a driving projection provided on the oscillating portion and projecting from the oscillating portion; a driven member with which the driving projection comes into abutment, wherein Young's modulus E1 of the driving projection and Young's modulus E2 of the driven member have a relationship of E1≠E2. 7. The motor according to claim 6 , wherein the Young's modulus E1 of the driving projection and the Young's modulus E2 of the driven member have a relationship of E1>E2. 8. The piezoelectric motor according to claim 6 , wherein the driving projection and the driven member are formed of the same component but sintered at different temperatures. 9. The piezoelectric motor according to claim 6 , wherein the driving projection and the driven member are formed of materials different in Young's modulus. 10. The piezoelectric motor according to claim 6 , wherein the driving projection and the driven member include magnesium oxide (MgO) and aluminum oxide (Al 2 O 3 ), and at least areas from surface portions thereof coming into abutment with each other until a depth of 200 nm have the Young's modulus E1 or the Young's modulus E2.
Assignees
Inventors
Classifications
- H02N2/004Primary
Rectangular vibrators · CPC title
Materials · CPC title
Electricity · mapped topic
by pressing one or more vibrators against the rotor · CPC title
producing combined linear and rotary motion, e.g. multi-direction positioners · CPC title
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Frequently asked questions
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- What does patent US9331263B2 cover?
- A piezoelectric motor includes a piezoelectric element, an oscillating plate including the piezoelectric element, a driving projection provided at an end of the oscillating plate, and a driven member driven by the driving projection coming into abutment therewith and is characterized in that Young's modulus E1 of the driving projection and Young's modulus E2 of the driven member are different.
- Who is the assignee on this patent?
- Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification H02N2/004. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 03 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).