Vibration generation device
US-9225265-B2 · Dec 29, 2015 · US
Piezoelectric vibration module
US9831415B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9831415-B2 |
| Application number | US-201414575701-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2014 |
| Priority date | Jan 8, 2014 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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- Title
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Abstract
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Embodiments of the invention provide a piezoelectric vibration module, including a vibration plate mounted with a piezoelectric element, which generates a vibration force in a vertical direction by being repeatedly expanded and contracted depending on external power applied thereto, and a lower case coupled with both ends of the vibration plate so as to be spaced apart from the vibration plate. The piezoelectric vibration module further includes a bar-shaped weight body increasing the vibration force of the piezoelectric element, and an elastic member interposed between the vibration plate and the weight body.
First claim
Opening claim text (preview).
What is claimed is: 1. A piezoelectric vibration module, comprising: a vibration plate mounted with a piezoelectric element which generates a vibration force in a vertical direction by being repeatedly expanded and contracted depending on external power applied thereto; a lower case coupled with both ends of the vibration plate so as to be spaced apart from the vibration plate; a bar-shaped weight body increasing the vibration force of the piezoelectric element; and an elastic member interposed between the vibration plate and the weight body. 2. The piezoelectric vibration module of claim 1 , wherein the elastic member is formed of a coil spring. 3. The piezoelectric vibration module of claim 1 , wherein the elastic member is made of a material having spring stiffness larger than that of the vibration plate. 4. The piezoelectric vibration module of claim 1 , wherein the elastic member is mounted on an upper surface of the vibration plate. 5. The piezoelectric vibration module of claim 1 , wherein the elastic member is positioned at a central portion of an upper surface of the vibration plate. 6. The piezoelectric vibration module of claim 1 , wherein a lower plate has both ends each provided with stepped portions. 7. The piezoelectric vibration module of claim 1 , wherein the piezoelectric element is mounted on a lower surface of the vibration plate. 8. The piezoelectric vibration module of claim 1 , wherein the piezoelectric element is mounted on a central portion of a lower surface of the vibration plate. 9. The piezoelectric vibration module of claim 1 , further comprising: an upper case having one side opened and formed with an inner space. 10. The piezoelectric vibration module of claim 9 , wherein the lower case is coupled with the opened one side of the upper case to shield the inner space of the upper case. 11. The piezoelectric vibration module of claim 9 , wherein a lower surface of the upper case is opened. 12. The piezoelectric vibration module of claim 1 , further comprising: at least two elastic members. 13. The piezoelectric vibration module of claim 12 , wherein the at least two elastic members are arranged to be bilaterally symmetrical at a central portion of the vibration plate. 14. The piezoelectric vibration module of claim 12 , wherein the at least two elastic members are arranged to be bilaterally symmetrical at a central portion of the weight body.
Assignees
Inventors
Classifications
- B06B1/0648Primary
of rectangular shape · CPC title
the masses being elastically coupled · CPC title
- H01L41/0933Primary
Electricity · mapped topic
- H10N30/2041Primary
Beam type · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9831415B2 cover?
- Embodiments of the invention provide a piezoelectric vibration module, including a vibration plate mounted with a piezoelectric element, which generates a vibration force in a vertical direction by being repeatedly expanded and contracted depending on external power applied thereto, and a lower case coupled with both ends of the vibration plate so as to be spaced apart from the vibration plate.…
- Who is the assignee on this patent?
- Samsung Electro Mech, Mplus Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B06B1/0648. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 28 2017 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).