RESONATOR DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT

• US 20160079954A1
• Filed: 09/15/2015
• Published: 03/17/2016
• Est. Priority Date: 09/16/2014
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Oto, Masayuki, Nakasendo, Kazuyuki, KAMETA, Takahiro
• Granted Patent: US 9,998,093 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 19/5733 Structural details or topology
• CPC Class Codes: H03H 9/02133 of stress
• CPC Class Codes: H03H 9/0509 consisting of adhesive elements
• CPC Class Codes: H03H 9/17 having a single resonator crystal tuning forks H03H9/21

Abstract

A resonator device includes a base including a fixed section and a movable section connected to the fixed section, a resonator element including a first base section, a second base section, and a vibration arm, one end of which is connected to the first base section and the other end of which is connected to the second base section, the first base section being fixed to the fixed section and the second base section being fixed to the movable section, a weight section connected onto the movable section, and a stress relaxing section provided between a connection region of the weight section and the vibration arm.

Claims

1. A resonator device comprising:

a base including a fixed section and a movable section connected to the fixed section;

a resonator element including a first base section, a second base section, and a vibration arm, one end of which is connected to the first base section and the other end of which is connected to the second base section, the first base section being fixed to the fixed section and the second base section being fixed to the movable section;

a weight section connected onto the movable section; and

a stress relaxing section provided between a connection region of the weight section and the vibration arm.

2. The resonator device according to claim 1, wherein the stress relaxing section is at least one of a groove and a through-hole.

3. The resonator device according to claim 1, wherein the stress relaxing section is provided on the base.

4. The resonator device according to claim 3, wherein the stress relaxing section is provided around the second base section.

5. The resonator device according to claim 1, wherein, when a direction orthogonal to a direction in which the vibration arm extends is represented as a first direction, length in the first direction of the stress relaxing section is larger than length in the first direction of the second base section.

6. An electronic apparatus comprising the resonator device according to claim 1.

7. An electronic apparatus comprising the resonator device according to claim 2.

8. An electronic apparatus comprising the resonator device according to claim 3.

9. An electronic apparatus comprising the resonator device according to claim 4.

10. An electronic apparatus comprising the resonator device according to claim 5.

11. A moving object comprising the resonator device according to claim 1.

12. A moving object comprising the resonator device according to claim 2.

13. A moving object comprising the resonator device according to claim 3.

14. A moving object comprising the resonator device according to claim 4.

15. A moving object comprising the resonator device according to claim 5.