Angular velocity sensor

• US 20070256496A1
• Filed: 04/18/2007
• Published: 11/08/2007
• Est. Priority Date: 04/20/2006
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited, Fujitsu Media Devices Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Limited, Fujitsu Media Devices Limited (Fujitsu Limited)
• Inventors: Takahashi, Yuji, Katsuki, Takashi, Ishikawa, Hiroshi, Nakazawa, Fumihiko, Takagi, Hiroaki, Yamaji, Takayuki
• Application Number:
  US11/785,457
• Publication Number:
  US 20070256496A1
• Time in Patent Office: Days
• US Class Current: 73/504.160
• CPC Class Codes: G01C 19/5628 Manufacturing; Trimming; Mounting; Housings

Abstract

An angular velocity sensor includes: first and second tuning-fork vibrators, each of which respectively includes a base portion and multiple arm portions extending from the base portion; and a mounting portion mounting the first and second tuning-fork vibrators, and an end of an arm portion of the first tuning-fork vibrator opposes a side face of the second tuning-fork vibrator; and a first wire connecting the first tuning-fork vibrator and the mounting portion extends in a width direction of the first tuning-fork vibrator.

Claims

1. An angular velocity sensor comprising:

first and second tuning-fork vibrators, each of which respectively includes a base portion and multiple arm portions extending from the base portion; and

a mounting portion mounting the first and second tuning-fork vibrators,

wherein an end of an arm portion of the first tuning-fork vibrator opposes a side face of the second tuning-fork vibrator; and

a first wire connecting the first tuning-fork vibrator and the mounting portion extends in a width direction of the first tuning-fork vibrator.

2. The angular velocity sensor as claimed in claim 1, wherein the first wire extends to the inside of the mounting portion.

3. The angular velocity sensor as claimed in claim 1, wherein a second wire connecting the second tuning-fork vibrator and the mounting portion extends in a longitudinal direction of the second tuning-fork vibrator.

4. The angular velocity sensor as claimed in claim 1, wherein a second wire connecting the second tuning-fork vibrator and the mounting portion extends in the width direction of the second tuning-fork vibrator.

5. The angular velocity sensor as claimed in claim 4, wherein the second wire extends to the inside of the mounting portion.

6. The angular velocity sensor as claimed in claim 1, further comprising a sound absorbing portion provided in the mounting portion and absorbing vibrations of the first and second tuning-fork vibrators.

7. The angular velocity sensor as claimed in claim 6, wherein the sound absorbing portion serves as a bonding member bonding a control circuit controlling the first and second tuning-fork vibrators with the mounting portion.