Vibration power generation device
First Claim
1. A vibration power generation device comprising:
- a power generating element configured to be attached to a vibrating member to convert vibration energy of the vibrating member to electrical energy; and
a multiple-degree-of-freedom vibration system including;
(i) a first vibration system in which a first mass member is elastically supported by a first spring member, the first spring member being formed of a rubber elastic body arranged between opposing faces of the first mass member and an attachment member attached to the vibrating member, the first mass member and the attachment member facing each other in a direction orthogonal to a main vibration input direction, and (ii) a second vibration system in which a second mass member is elastically connected to the first mass member by a second spring member, wherein;
the power generating element is arranged between the first mass member and the second mass member, and relative displacement of the first mass member and the second mass member is caused by vibration being applied from the vibrating member to the first mass member and transmitted to the second mass member so that the vibration energy of the vibrating member is input to the power generating element,a natural frequency of the first vibration system is different from a natural frequency of the second vibration system,the first mass member has a hollow structure provided with a housing space inside, and the second vibration system is housed within the housing space,the second spring member of the second vibration system is formed of a plate spring, and the power generating element is mounted on the plate spring,a support part projects within the housing space of the first mass member in the main vibration input direction from one of at least two peripheral walls of an interior of the hollow structure, the at least two peripheral walls extending in the direction orthogonal to the main vibration input direction and facing each other in the main vibration input direction,one end side of the plate spring is attached to the support part and supported within the housing space at a position inward from a peripheral wall of the first mass member, andthe second mass member is attached to another end side of the plate spring.
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Accused Products
Abstract
A vibration power generation device including a multiple-degree-of-freedom vibration system comprising a first vibration system and a second vibration system, wherein a natural frequency of the first vibration system is different from a natural frequency of the second vibration system. A first mass member of the first vibration system has a hollow structure including a housing space inside, where the second vibration system is housed. A power generating element is mounted on a plate spring of the second vibration system. A support part projects within the housing space, and one end side of the plate spring is attached to the support part and supported within the housing space at a position inward from a peripheral wall of the first mass member. A second mass member of the second vibration system is attached to another end side of the plate spring.
9 Citations
25 Claims
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1. A vibration power generation device comprising:
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a power generating element configured to be attached to a vibrating member to convert vibration energy of the vibrating member to electrical energy; and a multiple-degree-of-freedom vibration system including;
(i) a first vibration system in which a first mass member is elastically supported by a first spring member, the first spring member being formed of a rubber elastic body arranged between opposing faces of the first mass member and an attachment member attached to the vibrating member, the first mass member and the attachment member facing each other in a direction orthogonal to a main vibration input direction, and (ii) a second vibration system in which a second mass member is elastically connected to the first mass member by a second spring member, wherein;the power generating element is arranged between the first mass member and the second mass member, and relative displacement of the first mass member and the second mass member is caused by vibration being applied from the vibrating member to the first mass member and transmitted to the second mass member so that the vibration energy of the vibrating member is input to the power generating element, a natural frequency of the first vibration system is different from a natural frequency of the second vibration system, the first mass member has a hollow structure provided with a housing space inside, and the second vibration system is housed within the housing space, the second spring member of the second vibration system is formed of a plate spring, and the power generating element is mounted on the plate spring, a support part projects within the housing space of the first mass member in the main vibration input direction from one of at least two peripheral walls of an interior of the hollow structure, the at least two peripheral walls extending in the direction orthogonal to the main vibration input direction and facing each other in the main vibration input direction, one end side of the plate spring is attached to the support part and supported within the housing space at a position inward from a peripheral wall of the first mass member, and the second mass member is attached to another end side of the plate spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification