Resonator and resonance device
AssigneeMurata Manufacturing Co., Ltd.
InventorsWakana Hirota, Ville Kaajakari
Life of this patent
Estimating the term…
Abstract
In a resonator is provided that suppresses a shift of a resonant frequency. The resonator includes a vibration portion that has a base with front and rear ends and multiple vibration arms with fixed ends connected to the front end of the base and that extend away from the front end. Moreover, the resonator includes a frame that at least partially surrounds the vibration portion and one or more holding arms provided between the vibration portion and the frame with first ends connected to the base and the second ends connected to a region of the frame at the front end side relative to the rear end of the base portion.
Claims20
A resonator comprising:
- a vibration portion having a base with a front end and a rear end opposing the front end and a plurality of vibration arms that each has a fixed end connected to the front end of the base, such that the plurality of vibration arms extend away from the front end of the base;
- a frame that at least partially surrounds a periphery of the vibration portion;
- and
- at least one holding arm disposed between the vibration portion and the frame, the at least one holding arm having a first end coupled to the rear end of the base and a second end coupled to the frame closer to the front end of the base than the rear end of the base,
- wherein the first end of the at least one holding arm extends from the rear end of the base and in a direction backwards from a direction that the plurality of vibration arms extend from the front end of the base.
A resonator comprising:
- a vibration portion having a base with opposing first and second ends end and a plurality of vibration arms extending from the first end away from the front end of the base;
- a frame that at least partially surrounds a periphery of the vibration portion;
- and
- a pair of holding arms coupling the frame to the vibration portion,
- wherein the pair of holding arms extend from a side of the frame that faces respective open ends of each of the plurality of vibration arms and in a direction in parallel to the plurality of vibration arms so as to be disposed between respective sides of the base and the frame,
- wherein the pair of holding arms are coupled to the second end of the base of the vibration portion, and
- wherein the pair of holding arms extend from the second end of the base that is opposite of the first end and in a direction different than a direction that the plurality of vibration arms extend from the first end of the base.
A resonator comprising:
- a vibration portion having a base with a front end and a rear end opposing the front end and a plurality of vibration arms that each has a fixed end connected to the front end of the base, such that the plurality of vibration arms extend away from the front end of the base;
- a frame that at least partially surrounds a periphery of the vibration portion;
- and
- at least one holding arm disposed between the vibration portion and the frame, the at least one holding arm having a first end coupled to the base and a second end coupled to the frame closer to the front end of the base than the rear end of the base,
- wherein the at least one holding arm extends from the frame and in a direction parallel to a lengthwise direction of the plurality of vibration arms and past the rear end of the base, and
- wherein the at least one holding arm has a first length that extends parallel to the plurality of vibration arms, a second length that extends in a direction perpendicular to the first length, and a third length that extends in a direction parallel to the first length and is coupled to the rear end of the base.
Dependencies are inferred from the claim text.