Tuning-fork-type piezoelectric vibrating reed and tuning-fork-type piezoelectric vibrator

• US 20050017604A1
• Filed: 05/14/2004
• Published: 01/27/2005
• Est. Priority Date: 05/16/2003
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Yamada, Yoshiyuki
• Granted Patent: US 7,061,167 B2
• Time in Patent Office: Days
• US Class Current: 310/370
• CPC Class Codes: H03H 9/21 Crystal tuning forks

Abstract

A tuning-fork-type piezoelectric resonator element and a tuning-fork-type piezoelectric resonator are provided. The tuning-fork-type piezoelectric resonator element comprises a piezoelectric resonator element body including base and resonating arms extending from one end of base. A support includes a short side connected to the base and a long side extending from one end of the short side along a longitudinal direction of the piezoelectric resonator element body. A mount is provided at the tip of the long side and at the short side.

Claims

1. A tuning-fork-type piezoelectric resonator element comprising:

a piezoelectric resonator element body including;

a base; and

resonating arms extending from one end of the base;

a support including a short leg which is connected to a second end of the base opposite the resonating arms, and a long leg extending from an end of the short leg in a longitudinal direction of the piezoelectric resonator element body; and

mounts provided at a tip end of the long leg and at a tip end of the short leg.

2. The tuning-fork-type piezoelectric resonator element according to claim 1,

wherein the long leg extends from one end of the short leg.

3. The tuning-fork-type piezoelectric resonator element according to claim 1,

wherein the long leg is shorter than the piezoelectric resonator element body.

4. The tuning-fork-type piezoelectric resonator element according to claim 1, further comprising:

a second short leg provided at the free end of the long leg; and

wherein the support has a U-shape with the long leg extending between the short leg and the second short leg.

5. A tuning-fork-type piezoelectric resonator comprising:

the tuning-fork-type piezoelectric resonator element according to claim 1 mounted in a package by the mounts; and

a cover joined to an upper portion of the package.

6. A tuning-fork-type piezoelectric resonator element comprising:

a piezoelectric resonator element body including;

a base; and

a pair of laterally spaced apart resonating arms extending substantially in parallel from one end of the base;

a support including;

a first leg connected to a second end of the base opposite the resonating arms by a relatively narrow connecting part; and

a second leg extending substantially orthogonally from a first end of the first leg, the second leg being spaced apart from and projecting substantially parallel to the resonating arms;

a first mount provided at an end of the second leg opposite the first leg; and

a second mount provided at a second end of the first leg opposite the long leg.

7. A tuning-fork-type piezoelectric resonator element comprising:

a piezoelectric resonator element body including;

a base; and

a pair of laterally spaced apart resonating arms extending substantially in parallel from one end of the base;

an L-shaped support including;

a first leg; and

a second leg extending substantially orthogonally from a first end of the first leg;

a first mount provided at an end of the second leg opposite the first leg; and

a second mount provided at an end of the first leg opposite the long leg;

wherein the piezoelectric resonator element body is connected to the first leg by a relatively narrow connecting part, and the second leg projects substantially parallel to the resonating arms.