FUNCTIONAL DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT

• US 20150059474A1
• Filed: 08/26/2014
• Published: 03/05/2015
• Est. Priority Date: 08/29/2013
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: TANAKA, Satoru
• Application Number:
  US14/468,632
• Publication Number:
  US 20150059474A1
• Time in Patent Office: Days
• US Class Current: 73/514.32
• CPC Class Codes: G01P 15/125 by capacitive pick-up
• CPC Class Codes: G01P 2015/0814 for translational movement of the mass, e.g. shuttle type

Abstract

A functional device includes a movable member that can be displaced along a first axis, a movable electrode part extended from the movable member, a fixed electrode part provided to be opposed to the movable electrode part, and a stopper part that regulates displacement of the movable member. A projecting part projecting along the first axis is provided on the movable member, and a distance between an end of the projecting part and the stopper part is shorter than a distance between the movable electrode part and the fixed electrode part.

Claims

1. A functional device comprising:

a movable member that can be displaced along a first axis;

a movable electrode part extended from the movable member;

a fixed electrode part provided to be opposed to the movable electrode part; and

a stopper part that regulates displacement of the movable member,

wherein a projecting part projecting along the first axis is provided on the movable member, and

a distance between an end of the projecting part and the stopper part is shorter than a distance between the movable electrode part and the fixed electrode part.

2. The functional device according to claim 1, further comprising a fixed part connected to the movable member,

wherein the fixed part and the stopper part are integrally provided.

3. The functional device according to claim 1, further comprising a first fixed part and a second fixed part connected to the movable member,

wherein the first fixed part and the second fixed part are provided on both sides of the stopper part, and

the first fixed part and the movable member are connected by a first beam part and the second fixed part and the movable member are connected by a second beam part.

4. The functional device according to claim 3, wherein at least a part of the projecting part is provided between the first beam part and the second beam part.

5. The functional device according to claim 1, wherein the movable member and the stopper part are at the same potential.

6. The functional device according to claim 1, wherein a projection is provided on at least one of opposed surfaces of the stopper part and the projection part.

11. An electronic apparatus comprising the functional device according to claim 1.

13. A moving object comprising the functional device according to claim 1.

7. A functional device comprising:

a movable member that can be displaced along a first axis;

a movable electrode part extended from the movable member;

a fixed electrode part provided to be opposed to the movable electrode part;

a stopper part that regulates displacement of the movable member;

a first fixed part and a second fixed part provided on both sides of the stopper part;

a first beam part that connects the first fixed part and the movable member; and

a second beam part that connects the second fixed part and the movable member,

wherein the stopper part is provided to project toward the movable member, and

a distance between the stopper part and the movable member is shorter than a distance between the movable electrode part and the fixed electrode part.

8. The functional device according to claim 7, wherein at least a part of the stopper part is provided between the first beam part and the second beam part.

9. The functional device according to claim 7, wherein the movable member and the stopper part are at the same potential.

10. The functional device according to claim 7, wherein a projection is provided on a surface opposed to the movable member in the stopper part.

12. An electronic apparatus comprising the functional device according to claim 7.

14. A moving object comprising the functional device according to claim 7.