US2009064783A1PendingUtilityA1

Inertial force sensor

Assignee: MATSUSHITA ELECTRIC INDUSTRIAL CO LTDPriority: Jan 24, 2006Filed: Jan 22, 2007Published: Mar 12, 2009

Est. expiryJan 24, 2026(expired)· nominal 20-yr term from priority

Inventors:Satoshi Ohuchi Hiroyuki Aizawa Jiro Terada Takami Ishida Ichirou Satou Hideo Ohkoshi Yohei Ashimori

G01C 19/574G01C 19/56G01C 19/5642G01C 19/5607G01P 15/18G01P 15/097

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References

Claims

Abstract

An inertial force sensor includes a detecting device which detects an inertial force, the detecting device having a first orthogonal arm and a supporting portion, the first orthogonal arm having a first arm and a second arm fixed in a substantially orthogonal direction, and the supporting portion supporting the first arm. The second arm has a folding portion. In this configuration, there is provided a small inertial force sensor which realizes detection of a plurality of different inertial forces and detection of inertial forces of a plurality of detection axes.

Claims

exact text as granted — not AI-modified

1 . An inertial force sensor comprising:
 a detecting device which detects an inertial force,   wherein the detecting device includes:
 two first orthogonal arms, each of which has a first arm and a second arm and is formed by fixing the first arm and the second arm in a substantially orthogonal direction; and 
 a supporting portion which supports the first arm, and wherein the second arm has a folding portion which folds the second arm. 
   
     
     
         2 . The inertial force sensor according to  claim 1 , wherein the second arm is folded at the folding portion and confronted with the first arm. 
     
     
         3 . The inertial force sensor according to  claim 2 , wherein the first arm and the supporting portion are arranged on a substantially identical straight line. 
     
     
         4 . The inertial force sensor according to  claim 2 ,
 wherein an end of the second arm is driven and oscillated in a direction confronting the first arm, and   wherein an angular velocity is detected by detecting distortion of the first arm or the second arm.   
     
     
         5 . The inertial force sensor according to  claim 2 , wherein acceleration is detected by detecting distortion of the first arm or the second arm. 
     
     
         6 . The inertial force sensor according to  claim 2 , wherein the detecting device further includes a weight portion formed at an end of the second arm. 
     
     
         7 . The inertial force sensor according to  claim 2 , wherein an end of the second arm is folded in meander shape. 
     
     
         8 . The inertial force sensor according to  claim 1 ,
 wherein the detecting device further includes two fixing arms which are fixed to the supporting portion and fixed to a mounting substrate on which the detecting device is to be mounted,   wherein the fixing arm is a second orthogonal arm, which has a third arm and a fourth arm and is formed by fixing the third arm and the fourth arm in a substantially orthogonal direction,   wherein the third arm is supported by the supporting portion, and   wherein the fixing arm is fixed to the mounting substrate by the fourth arm.   
     
     
         9 . The inertial force sensor according to  claim 8 , wherein the second arm is folded at the folding portion and confronted with the second arm. 
     
     
         10 . The inertial force sensor according to  claim 8 ,
 wherein the first arm and the supporting portion are arranged on a substantially identical straight line,   wherein the third arm and the supporting portion are arranged on a substantially identical straight line, and   wherein the first arm and the third arm are arranged in a substantially orthogonal direction.   
     
     
         11 . The inertial force sensor according to  claim 8 ,
 wherein an end of the second arm is driven and oscillated in a direction confronting the first arm, and   wherein an angular velocity is detected by detecting distortion of at least one of the first arm, the second arm, the third arm, and the fourth arm.   
     
     
         12 . The inertial force sensor according to  claim 8 , wherein acceleration is detected by detecting distortion of at least one of the first arm, the second arm, the third arm, and the fourth arm. 
     
     
         13 . The inertial force sensor according to  claim 8 , wherein the detecting device further includes a weight portion formed at an end of the second arm. 
     
     
         14 . The inertial force sensor according to  claim 8 , wherein an end of the second arm is folded in meander shape. 
     
     
         15 . The inertial force sensor according to  claim 1 ,
 wherein the detecting device further includes two fixing arms which are fixed to the supporting portion and fixed to a mounting substrate on which the detecting device is to be mounted, and   wherein the second arm is folded at the folding portion and confronted with the second arm.   
     
     
         16 . The inertial force sensor according to  claim 15 ,
 wherein the first arm and the supporting portion are arranged on a substantially identical straight line,   wherein the fixing arm and the supporting portion are arranged on a substantially identical straight line, and   wherein the first arm and the fixing arm are arranged in a substantially orthogonal direction.   
     
     
         17 . The inertial force sensor according to  claim 15 ,
 wherein an end of the second arm is driven and oscillated in a direction confronting the second arm, and   wherein an angular velocity is detected by detecting distortion of at least one of the first arm, the second arm, and the fixing arm.   
     
     
         18 . The inertial force sensor according to  claim 15 , wherein acceleration is detected by detecting distortion of at least one of the first arm, the second arm, and the fixing arm. 
     
     
         19 . The inertial force sensor according to  claim 15 , wherein the detecting device further includes a weight portion formed at an end of the second arm. 
     
     
         20 . The inertial force sensor according to  claim 15 , wherein an end of the second arm is folded in meander shape. 
     
     
         21 . The inertial force sensor according to  claim 1 ,
 wherein the detecting device further includes two fixing arms which are fixed to the supporting portion and fixed to a mounting substrate on which the detecting device is to be mounted,   wherein the fixing arm is a second orthogonal arm, which has a third arm and a fourth arm and is formed by fixing the third arm and the fourth arm in a substantially orthogonal direction,   wherein at least a part of the third arm serves as the first arm, and   wherein the fixing arm is fixed to the mounting substrate by the fourth arm.   
     
     
         22 . The inertial force sensor according to  claim 21 , wherein the second arm is folded at the folding portion and confronted with the second arm. 
     
     
         23 . The inertial force sensor according to  claim 21 , wherein the third arm and the supporting portion are arranged on a substantially identical straight line. 
     
     
         24 . The inertial force sensor according to  claim 21 ,
 wherein an end of the second arm is driven and oscillated in a direction confronting the second arm, and   wherein an angular velocity is detected by detecting distortion of at least one of the first arm, the second arm, the third arm, and the fourth arm.   
     
     
         25 . The inertial force sensor according to  claim 21 , wherein acceleration is detected by detecting distortion of at least one of the first arm, the second arm, the third arm, and the fourth arm. 
     
     
         26 . The inertial force sensor according to  claim 21 , wherein the detecting device further includes a weight portion formed at an end of the second arm. 
     
     
         27 . The inertial force sensor according to  claim 21 , wherein an end of the second arm is folded in meander shape. 
     
     
         28 . The inertial force sensor according to  claim 1 ,
 wherein the detecting device further includes two fixing arms which are fixed to the supporting portion and fixed to a mounting substrate on which the detecting device is to be mounted, and   wherein at least a part of the fixing arm serves as the first arm.   
     
     
         29 . The inertial force sensor according to  claim 28 , wherein the second arm is folded at the folding portion and confronted with the second arm. 
     
     
         30 . The inertial force sensor according to  claim 28 , wherein the fixing arm and the supporting portion are arranged on a substantially identical straight line. 
     
     
         31 . The inertial force sensor according to  claim 28 ,
 wherein an end of the second arm is driven and oscillated in a direction confronting the second arm, and   wherein an angular velocity is detected by detecting distortion of at least one of the first arm, the second arm, and the fixing arm.   
     
     
         32 . The inertial force sensor according to  claim 28 , wherein acceleration is detected by detecting distortion of at least one of the first arm, the second arm, and the fixing arm. 
     
     
         33 . The inertial force sensor according to  claim 28 , wherein the detecting device further includes a weight portion formed at an end of the second arm. 
     
     
         34 . The inertial force sensor according to  claim 28 , wherein an end of the second arm is folded in meander shape.

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