Resonator and resonator device
A resonator includes a vibrator with a base, and multiple vibrating arms extending therefrom. Moreover, a frame surrounds a periphery of the vibrating part and a holding arm couples the vibrator to the frame. The holding arm includes a pair of first support arms that are connected to the base opposite the vibrating arms and a coupling portion that couples the support arms with one another and that is connected to the frame.
1. A resonator comprising:
a vibrator that includes a base and a plurality of vibrating arms extending from a first side of the base;
a frame that at least partially surrounds the vibrator; and
a holding arm coupling the frame to a second side of the base opposite the first side, the holding arm including a pair of first support arms having first ends respectively connected to the second side of the base and a coupling portion that couples the pair of first support arms to each other and that is connected to the frame,
wherein each of the base, the plurality of vibrating arms and the coupling portion of the holding arm are all disposed in a same plane as each other.
2. The resonator according to claim 1 , wherein the pair of first support arms extend in a first direction that is parallel to a lengthwise direction of the plurality of vibrating arms.
3. The resonator according to claim 2 , wherein the coupling portion includes:
a first coupling arm extending in a second direction orthogonal to the first direction and having a first end connected to a second end of a first of the pair of first support arms and a second end connected to a second end of a second of the pair of first support arms, and
a second support arm extending in the first direction and having a first end connected to a center of the first coupling arm and a second end connected to a region of the frame facing the second side of the base.
4. The resonator according to claim 2 , wherein the coupling portion includes:
a first coupling arm extending in a second direction orthogonal to the first direction and having a first end connected to a second end of a first of the pair of first support arms and a second end connected to a second end of a second of the pair of first support arms,
a second coupling arm extending in the second direction at a position between the first coupling arm and the frame,
a second support arm extending in the first direction and having a first connected to a center of the first coupling arm and a second end connected to a center of the second coupling arm, and
a pair of third support arms extending in the first direction and each having a first end connected to respective ends of the second coupling arm and second ends connected to a region of the frame facing free ends of the plurality of vibrating arms.
5. The resonator according to claim 2 , wherein the coupling portion includes:
a first coupling arm extending in a second direction orthogonal to the first direction and having a first end connected to a second end of a first of the pair of first support arms and a second end connected to a second end of a second of the pair of first support arms,
a second coupling arm extending in the second direction at a position between the first coupling arm and the frame,
a second support arm extending in the first direction and having a first end connected to a center of the first coupling arm and a second end connected to a center of the second coupling arm,
a pair of third support arms extending in the first direction and each having a first end connected to respective ends of the second coupling arm,
a fourth support arm extending in the second direction and having a first end connected to a first of the pair of third support arms and a second end connected to a region of the frame part facing the first of the pair of third support arms, and
a fifth support arm extending in the second direction and having a first end connected to a second of the pair of third support arms and a second end connected to a region of the frame facing the second of the pair of third support arms.
6. The resonator according to claim 1 , wherein the pair of first support arms are connected to the base in an area of the base where a displacement of the plurality of vibrating arms due to vibration is minimized at a rear end of the base opposite to a front end of the base connected to the plurality of vibrating arms.
7. The resonator according to claim 1 , wherein the pair of first support arms are connected to the base at an inner side with respect to a center in the second direction between outermost vibrating arms of the plurality of vibrating arms.
8. The resonator according to claim 1 , wherein the pair of first support arms are each respectively connected to the base at positions between the plurality of vibrating arms.
9. The resonator according to claim 1 , wherein the plurality of vibrating arms comprises a first pair of vibrating arms and a second pair of vibrating arm with respective first and second central axes extending in a lengthwise direction of the plurality of vibrating arms, the first and second central axes being between the first and second pairs of vibrating arms, respectively.
10. The resonator according to claim 9 , wherein the pair of first support arms are respectively connected to positions of the second side of the base that intersect the first and second central axes, respectively, in the lengthwise direction, such that displacement due to vibration during excitation is minimized.
11. A resonator comprising:
a vibration member having a base and a plurality of vibrating arms extending from the base in a first direction;
a frame that at least partially surrounds the vibration member; and
a vibration member support coupling the frame to the base,
wherein the vibration member support includes:
a pair of first support arms extending from the base in the first direction and a connected to a side of the base opposite the plurality of vibrating arms; and
a coupling member that connects the pair of first support arms to the frame.
12. The resonator according to claim 11 , wherein the coupling member includes a first coupling arm extending in a second direction orthogonal to the first direction and having a first end connected to one of the pair of first support arms and a second end connected to the other of the pair of first support arms.
13. The resonator according to claim 12 , wherein the coupling member further includes a second support arm extending in the first direction and having a first end connected the first coupling arm and a second end connected to the frame.
14. The resonator according to claim 13 , wherein the first end of the second support arm is connected to a center of the first coupling arm and the second end of the second support arm is connected to a region of the frame facing the side of the base opposite the plurality of vibrating arms.
15. The resonator according to claim 11 , wherein the pair of first support arms are connected to the base in an area of the base where a displacement of the plurality of vibrating arms due to vibration is minimized at a rear end of the base opposite to a front end of the base connected to the plurality of vibrating arms.
16. The resonator according to claim 11 , wherein the pair of first support arms are each respectively connected to the base at positions between the plurality of vibrating arms.
17. The resonator according to claim 11 , wherein the plurality of vibrating arms comprises a first pair of vibrating arms and a second pair of vibrating arm with respective first and second central axes extending in a lengthwise direction of the plurality of vibrating arms, with the first and second central axes being between the first and second pairs of vibrating arms, respectively.
18. The resonator according to claim 17 , wherein the pair of first support arms are respectively connected to the base at positions that intersect with the first and second central axes, respectively, in the lengthwise direction, such that displacement due to vibration during excitation is minimized.
19. A resonator comprising:
a vibrator having a base and a plurality of vibrating arms extending from the base;
a frame that at least partially surrounds the vibrator; and
a vibrator support coupling the frame to the base, wherein the vibrator support includes a pair of support arms connected to a side of the base opposite the plurality of vibrating arms and extending from the base in a lengthwise direction that is a same direction as the plurality of vibrating arms, with the pair of support arms coupled to the base at respective positions configured to minimize displacement of the plurality of vibrating arms due to vibration.
20. The resonator according to claim 19 , wherein the vibrator support further includes a coupling member that connects the pair of support arms to the frame.
21. The resonator according to claim 1 , wherein the coupling portion couples the pair of first support arms to each other to define an opening between the second side of the base, the pair of support arms and the coupling portion.