JP2016201899A - Vibration structure and vibration power generator using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration structure in which a magnet is hard to be attracted to a core, and a vibration power generator using the same.SOLUTION: A vibration structure 100 includes a frame 1, a movable plate 2, a pair of joint portions 3A, 3B, a magnet block 10 containing a magnet 4, a core 5, and a winding 6. The pair of joint portions 3A, 3B support the movable plate 2 so that the movable plate 2 can be vibrated in a first direction with respect to the frame 1. The magnet block 10 is secured to the movable plate 2 so that the magnetization direction thereof is coincident with a second direction orthogonal to both the thickness direction of the movable plate 2 and the first direction. The core 5 is provided in a part of the frame 1. The core 5 is arranged so that the area of a facing surface thereof which faces the magnet block 10 in the second direction varies as the magnet block 10 vibrates in the first direction.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a vibration structure and a vibration power generation apparatus using the vibration structure, and more particularly to a vibration structure that converts vibration energy into electric energy and a vibration power generation apparatus using the vibration structure.

  Conventionally, an energy conversion device that converts vibration energy into electric energy using electromagnetic induction has been proposed (for example, Patent Document 1).

  The energy conversion device described in Patent Literature 1 includes a support, a permanent magnet, and a pair of coil springs. The support is provided with a storage portion. The permanent magnet and the pair of coil springs are disposed in the storage portion of the support.

  A planar coil is disposed on the inner ceiling surface of the support. In the inner ceiling surface, an opening is formed in a region facing the central portion of the planar coil. A magnetic core (core) made of Fe, Co, or the like is embedded in the opening. The tip of the magnetic core is disposed at the center of the planar coil.

  The permanent magnet is coupled to the inner surface of the support via a pair of coil springs so as to move in a direction (first direction) orthogonal to the thickness direction of the support. The permanent magnet is restricted from moving in a direction (second direction) orthogonal to the first direction.

  The permanent magnet is disposed to face the planar coil with a predetermined interval. Patent Document 1 describes that the magnetization direction of a permanent magnet matches the thickness direction.

JP 2009-11149 A

  In the energy conversion device described in Patent Document 1, since the permanent magnet is arranged opposite to the planar coil and the magnetic core exists in the magnetization direction of the permanent magnet, when the permanent magnet moves (vibrates), the permanent magnet becomes the magnetic core. There is a possibility of adsorption.

  An object of the present invention is to provide a vibration structure in which a magnet is hardly attracted to a core and a vibration power generation apparatus using the vibration structure.

  The vibration structure of the present invention includes a frame-shaped frame, a movable plate disposed inside the frame, and the frame provided on both sides of the movable plate in a first direction orthogonal to the thickness direction of the movable plate. And a pair of connecting portions for connecting the movable plate. The vibrating structure includes a magnet block including a magnet, a core that forms a magnetic circuit through which the magnetic flux of the magnet block passes, and a winding wound around the core. The pair of connecting portions support the movable plate so as to be able to vibrate in the first direction with respect to the frame. The magnet block is attached to the movable plate so that the magnetization direction of the magnet block coincides with a second direction orthogonal to both the thickness direction and the first direction. The core is provided in a part of the frame. The core is arranged such that the area of the facing surface that faces the magnet block in the second direction changes as the magnet block vibrates in the first direction.

  In this vibration structure, the core includes a first core and a second core, the frame is formed in a rectangular frame shape, and the first core is a first in the first direction of the frame. It is preferable that the second core is disposed at an end portion and is disposed at a second end portion of the frame in the first direction.

  In this vibration structure, each of the first core and the second core includes a rod-like base portion and a pair of leg portions provided so as to protrude from both ends of the base portion along the first direction. The magnet block is configured in a rectangular plate shape, and the pair of first legs, which are the pair of legs of the first core, is configured such that the pair of first legs is in a stationary state where the magnet block is not vibrating. The pair of leg portions of the second core are configured such that the front end surfaces of the leg portions are located on the same plane as the side surfaces close to the first core among the both side surfaces of the magnet block in the first direction. In the stationary state, the pair of second legs are such that the distal end surfaces of the pair of second legs are the same as the side surfaces close to the second core in both side surfaces of the magnet block in the first direction. Configure to be in a plane It is, wherein the each of the pair of first legs and the pair of second leg portions, it is preferable that the facing surface is provided.

  In this vibration structure, it is preferable that the core is formed separately from the frame, and the frame, the movable plate, and the pair of connecting portions are formed of a single plate material.

  In this vibration structure, the base is formed in a quadrangular cross section, the base is disposed so that a longitudinal direction thereof coincides with the second direction, the winding is wound around the base, and the pair Each of the leg portions preferably has a holding portion for holding the frame at a central portion in the thickness direction.

  In this vibration structure, the base is formed in a quadrangular cross section, the base is disposed such that a longitudinal direction thereof coincides with the second direction, the winding is wound around the base, and the pair of pairs Each of the leg portions is preferably formed in a quadrangular cross section, and each of the pair of leg portions is preferably provided with a support surface for supporting the frame on one surface in the thickness direction.

  In this vibration structure, the magnet block includes a first magnet and a second magnet as the magnet, and the first magnet is attached to a first surface in a thickness direction of the movable plate, The two magnets are preferably attached to the second surface in the thickness direction of the movable plate.

  In this vibration structure, the magnet block includes a first yoke pair and a second yoke pair, each of which includes a pair of yoke pieces, and the first yoke pair is the pair of yoke pieces. The pair of yoke pieces are attached to the first surface of the movable plate so as to sandwich the magnet and along the second direction with the first magnet, and the second yoke pair is A pair of yoke pieces are attached to the second surface of the movable plate so that the second magnet is sandwiched and the pair of yoke pieces are aligned with the second magnet along the second direction. Preferably it is.

  In this vibration structure, it is preferable that a weight is fixed to the magnet.

  In the vibration structure, each of the pair of connecting portions is formed to have elasticity, and each of the pair of connecting portions includes a rectangular frame-shaped frame body, the frame body, the frame, and the movable plate. It is preferable to provide a spring portion including a pair of connection pieces connected between the two.

  In this vibration structure, each of the pair of connecting portions includes a first spring portion which is the spring portion, and a second spring portion having a shape different from the first spring portion, and the second spring portion is A pair of first rods arranged along the second direction and a second rod arranged along the first direction, and both ends of the pair of first rods are A first end of the second rod body is attached to a center portion of one of the pair of first rod bodies, and the second rod is attached to both ends of the frame in the second direction. The central part of the body is attached to the central part of the other first rod body of the pair of first rod bodies, and the second end of the second rod body is movable via the first spring portion. It is preferably attached to a plate.

  The vibration power generation device of the present invention includes the vibration structure and a rectifier circuit that rectifies an induced electromotive force generated in the winding. The rectifier circuit is electrically connected to the winding.

  In the vibration structure according to the aspect of the invention, the magnet block is attached to the movable plate so that the magnetization direction of the magnet block coincides with a second direction orthogonal to both the thickness direction and the first direction. Yes. The core is arranged such that the area of the facing surface that faces the magnet block in the second direction changes as the magnet block vibrates in the first direction. Thereby, in the vibration structure of the present invention, the magnet is hardly attracted to the core.

  The vibration power generation device of the present invention includes the vibration structure and a rectifier circuit that rectifies an induced electromotive force generated in the winding. The rectifier circuit is electrically connected to the winding. Thereby, in the vibration power generator of the present invention, it is possible to provide a vibration power generator using a vibration structure in which the magnet is difficult to be attracted to the core.

FIG. 1 is a perspective view of the vibration structure according to the first embodiment. FIG. 2 is a plan view of the vibration structure according to the first embodiment. FIG. 3 is a perspective view illustrating a partially broken core in the vibration structure according to the first embodiment. 4A and 4B relate to the connecting portion of the vibration structure according to the first embodiment. FIG. 4A is a plan view showing the second spring portion, and FIG. 4B is a plan view showing the first spring portion. FIG. 5 is an explanatory diagram schematically showing the amount of magnetic flux passing through the core when the magnet block vibrates in the vibration structure according to the first embodiment. FIG. 6 is an explanatory diagram showing a state in which the first spring portion and the second spring portion are deformed when the magnet block vibrates in the vibration structure according to the first embodiment. 7A and 7B relate to the vibration power generation apparatus of the first embodiment, FIG. 7A is a circuit diagram illustrating a part of a configuration example of the vibration power generation apparatus of the first embodiment, and FIG. 7B is a diagram of the vibration power generation apparatus of the first embodiment. It is a circuit diagram which shows a part of other structural example. FIG. 8 is a perspective view of the vibration structure according to the second embodiment. 9 is a cross-sectional view taken along the line XX of FIG.

(Embodiment 1)
Below, the vibration structure 100 of Embodiment 1 is demonstrated, referring FIGS.

  The vibration structure 100 is configured to convert vibration energy into electric energy using electromagnetic induction.

  The vibration structure 100 includes, for example, a frame 1, a movable plate 2, a pair of connecting portions 3 </ b> A and 3 </ b> B, a magnet block 10, a pair of cores 5 and 5, and a pair of windings 6 and 6. Yes. In the vibration structure 100, the pair of cores 5 and 5 are configured separately from the frame 1, for example.

  The frame 1 is formed in a frame shape (for example, a rectangular frame shape). The frame 1 is made of, for example, a metal material. Examples of the metal material include SUS301, phosphor bronze, beryllium copper, white, copper titanium alloy, and the like.

  The movable plate 2 is formed in a plate shape (for example, a rectangular plate shape). The movable plate 2 is made of, for example, a metal material. Examples of the metal material include SUS301, phosphor bronze, beryllium copper, western white, copper titanium alloy, and the like.

  The movable plate 2 is disposed inside the frame 1.

  The pair of connecting portions 3 </ b> A and 3 </ b> B are configured to connect the frame 1 and the movable plate 2.

  The pair of connecting portions 3 </ b> A and 3 </ b> B are provided on both sides of the movable plate 2 in a first direction (vertical direction in FIG. 2) orthogonal to the thickness direction of the movable plate 2. The pair of connecting portions 3 </ b> A and 3 </ b> B support the movable plate 2 such that it can vibrate in the first direction with respect to the frame 1.

  Each of the pair of connecting portions 3A and 3B is made of, for example, a metal material. Examples of the metal material include SUS301, phosphor bronze, beryllium copper, western white, copper titanium alloy, and the like. Moreover, each of a pair of connection part 3A, 3B is formed so that it may have elasticity. Details of the pair of connecting portions 3A and 3B will be described later.

  The magnet block 10 is formed in a plate shape (for example, a rectangular plate shape). The magnet block 10 includes a magnet 4. In the vibration structure 100, the magnet block 10 includes the magnet 4.

  The magnet block 10 is attached to the movable plate 2 so that the magnetization direction of the magnet block 10 coincides with a second direction (left and right direction in FIG. 2) orthogonal to both the thickness direction and the first direction. ing. More specifically, in the magnet block 10, the first end in the second direction (right end in FIG. 2) of the magnet block 10 is an N pole, and the second end of the magnet block 10 in the second direction. It is attached to the movable plate 2 so that the left end (in FIG. 2) is the S pole. In the vibration structure 100, the magnet block 10 is attached to the movable plate 2 by, for example, an adhesive.

  The magnet block 10 includes a first magnet 41 and a second magnet 42 as the magnet 4.

  Each of the first magnet 41 and the second magnet 42 is formed in a plate shape (for example, a rectangular plate shape).

  The first magnet 41 is attached to the first surface of the movable plate 2 in the thickness direction (the upper surface in FIG. 1). In the vibration structure 100, the first magnet 41 is attached to the first surface of the movable plate 2 by, for example, an adhesive.

  The second magnet 42 is attached to the second surface (the lower surface in FIG. 1) in the thickness direction of the movable plate 2. In the vibration structure 100, the second magnet 42 is attached to the second surface of the movable plate 2 by, for example, an adhesive.

  The magnet block 10 includes, for example, a first yoke pair 21 and a second yoke pair 22 in addition to the magnet 4.

  Each of the first yoke pair 21 and the second yoke pair 22 includes a pair of yoke pieces 23A and 23B.

  The first yoke pair 21 sandwiches the first magnet 41 between the pair of yoke pieces 23A and 23B in the first yoke pair 21, and the pair of yoke pieces 23A and 23B is connected to the first magnet 41 and the second magnet. The movable plate 2 is attached to the first surface so as to be aligned along the direction. In the vibration structure 100, the first yoke pair 21 is attached to the first surface of the movable plate 2 with, for example, an adhesive.

  The second yoke pair 22 sandwiches the second magnet 42 between the pair of yoke pieces 23A, 23B in the second yoke pair 22, and the pair of yoke pieces 23A, 23B is connected to the second magnet 42 and the second magnet 42. The movable plate 2 is attached to the second surface so as to be aligned along the direction. In the vibration structure 100, the second yoke pair 22 is attached to the second surface of the movable plate 2 by, for example, an adhesive.

  The magnet block 10 includes a pair of weights 70 and 70 in addition to the magnet 4, the first yoke pair 21 and the second yoke pair 22. Hereinafter, for convenience of explanation, one weight 70 of the pair of weights 70 and 70 is referred to as a “first weight 71”, and the remaining weight 70 of the pair of weights 70 and 70 is referred to as a “second weight 72”. Called.

  Each of the first weight 71 and the second weight 72 is formed in a plate shape (for example, a rectangular plate shape). Each of the first weight 71 and the second weight 72 is made of, for example, a nonmagnetic material. Examples of the nonmagnetic material include SUS304, aluminum, brass, and the like.

  The first weight 71 is fixed to the first magnet 41 and the first yoke pair 21. More specifically, the first weight 71 is fixed on the opposite side (the upper side in FIG. 1) of the first magnet 41 and the first yoke pair 21 to the movable plate 2 side. In the vibration structure 100, the first weight 71 is fixed to the first magnet 41 and the first yoke pair 21 by, for example, an adhesive.

  The second weight 72 is fixed to the second magnet 42 and the second yoke pair 22. Specifically, the second weight 72 is fixed to the second magnet 42 and the second yoke pair 22 on the side opposite to the movable plate 2 side (lower side in FIG. 1). In the vibration structure 100, for example, the second weight 72 is fixed to the second magnet 42 and the second yoke pair 22 by an adhesive or the like.

  Each of the first weight 71 and the second weight 72 is configured to be able to adjust the resonance frequency of the movable plate 2. The mass of each of the first weight 71 and the second weight 72 is preferably set so that the resonance frequency of the movable plate 2 matches the vibration frequency of the installation environment. As a result, in the vibration structure 100, the movable plate 2 is driven to resonate (the movable plate 2 is greatly displaced), so that the amount of power generation can be increased. The vibration frequency of the installation environment means the frequency of vibration generated at the place where the vibration structure 100 is installed.

  Although the 1st weight 71 is being fixed to the opposite side to the movable plate 2 side of the 1st magnet 41 and the 1st yoke pair 21, it is not restricted to this. The first weight 71 may be fixed to the movable magnet 2 side of the first magnet 41 and the first yoke pair 21. In this case, the first weight 71 is attached to the first surface of the movable plate 2, and the first magnet 41 and the first yoke pair 21 are fixed to the opposite side of the first weight 71 to the movable plate 2 side. The That is, in the vibration structure 100, the positions of the first weight 71, the first magnet 41, and the first yoke pair 21 may be interchanged.

  Although the 2nd weight 72 is being fixed to the opposite side to the movable plate 2 side of the 2nd magnet 42 and the 2nd yoke pair 22, it is not restricted to this. The second weight 72 may be fixed to the movable plate 2 side of the second magnet 42 and the second yoke pair 22. In this case, the second weight 72 is attached to the second surface of the movable plate 2, and the second magnet 42 and the second yoke pair 22 are fixed to the opposite side of the second weight 72 to the movable plate 2 side. The That is, in the vibration structure 100, the positions of the second weight 72, the second magnet 42, and the second yoke pair 22 may be interchanged.

  Each of the pair of cores 5 and 5 is configured to form a magnetic circuit through which the magnetic flux of the magnet block 10 passes. Each of the pair of cores 5 and 5 is made of a magnetic material.

  Each of the pair of cores 5 and 5 includes a base portion 7 having a rod shape (for example, a square rod shape) and a pair of leg portions 8A and 8B provided so as to protrude from both ends of the base portion 7 along the first direction. I have. Hereinafter, for convenience of explanation, one core 5 of the pair of cores 5 and 5 is referred to as “first core 5A”, and the remaining core 5 of the pair of cores 5 and 5 is referred to as “second core 5B”. Called.

  The first core 5 </ b> A is disposed at the first end portion (the upper end portion in FIG. 2) of the frame 1 in the first direction. The second core 5B is disposed at the second end portion (the lower end portion in FIG. 2) of the frame 1 in the first direction. In short, each of the first core 5 </ b> A and the second core 5 </ b> B is provided in a part of the frame 1. Details of the first core 5A and the second core 5B will be described later.

  The pair of windings 6 and 6 are configured to be wound around a corresponding pair of cores 5 and 5. Each of the pair of windings 6 and 6 is, for example, a covered electric wire. The covered electric wire means an electric wire in which a conductor is covered with an insulating covering portion. Each of the pair of windings 6 and 6 is connected in series, for example. In the following, for convenience of explanation, one winding 6 of the pair of windings 6 and 6 is referred to as a “first winding 6A”, and the remaining winding 6 of the pair of windings 6 and 6 is “ This is referred to as “second winding 6B”.

  Hereinafter, details of the first core 5A and the second core 5B will be described.

  Each of the first core 5A and the second core 5B is formed by laminating a plurality of thin plates (see FIG. 3). Each of the plurality of thin plates is made of a magnetic material. Thereby, in the vibration structure 100, for example, when the resonance frequency of the movable plate 2 is high, each of the first core 5A and the second core 5B is not formed by stacking the plurality of thin plates. In comparison, eddy current loss generated in each of the cores 5A and 5B can be suppressed.

  The base portion (hereinafter referred to as “first base portion”) 7 of the first core 5 </ b> A is formed in, for example, a rectangular cross section. The first base 7 is arranged so that the longitudinal direction (the left-right direction in FIG. 2) of the first base 7 coincides with the second direction. A first winding 6 </ b> A is wound around the first base portion 7. In the vibration structure 100, the first winding 6 </ b> A is wound around the first base 7 by, for example, 1000 turns.

  Each of a pair of leg portions (hereinafter referred to as “a pair of first leg portions”) 8A and 8B of the first core 5A is formed in, for example, a quadrangular cross section.

  The pair of first leg portions 8A and 8B are side surfaces in which the front end surfaces 9 are close to the first core 5A among the both side surfaces of the magnet block 10 in the first direction when the magnet block 10 is not oscillating. It is comprised so that it may be located in the same plane (in FIG. 2, upper surface).

  The base portion (hereinafter, “second base portion”) 7 of the second core 5B is formed in, for example, a quadrangular cross section. The second base portion 7 is disposed such that the longitudinal direction (the left-right direction in FIG. 2) of the second base portion 7 coincides with the second direction. A second winding 6 </ b> B is wound around the second base portion 7. In the vibration structure 100, the second winding 6B is wound around the second base 7 by, for example, 1000 turns.

  Each of a pair of leg portions (hereinafter referred to as “a pair of second leg portions”) 8A and 8B of the second core 5B is formed, for example, in a quadrangular cross section.

  The pair of second leg portions 8A and 8B is a side surface of each of the side surfaces in the first direction of the magnet block 10 close to the second core 5B when the magnet block 10 is stationary (in FIG. 2). , The lower surface) and the same plane.

  In each of the pair of first leg portions 8A and 8B, a holding portion (hereinafter referred to as “first holding portion”) 11 that holds the frame 1 is formed at the center portion in the thickness direction (vertical direction in FIG. 1). ing. Each of the pair of second leg portions 8A and 8B is formed with a holding portion (hereinafter referred to as “second holding portion”) 11 that holds the frame 1 at the center portion in the thickness direction. Each of the 1st holding | maintenance part 11 and the 2nd holding | maintenance part 11 is a groove | channel, for example. The first holding unit 11 is configured to hold the first end portion of the frame 1. The second holding portion 11 is configured to hold the second end portion of the frame 1. In the vibration structure 100, after the frame 1 is held by the holding portions 11 and 11, the frame 1 is fixed to the holding portions 11 and 11, for example, by laser welding or the like.

  The frame 1, the movable plate 2, and the pair of connecting portions 3A and 3B are formed of, for example, a single plate material. More specifically, the frame 1, the movable plate 2, and the pair of connecting portions 3A and 3B are formed by punching one plate material. One plate material is formed of, for example, a metal material. Examples of the metal material include SUS301, phosphor bronze, beryllium copper, western white, copper titanium alloy, and the like. Thereby, in the vibration structure 100, it becomes possible to improve productivity compared with the case where the flame | frame 1, the movable plate 2, and a pair of connection part 3A, 3B are not formed with one board | plate material.

  Below, the detail of a pair of connection part 3A, 3B is demonstrated. In the following description, only the connecting portion 3A of the pair of connecting portions 3A and 3B will be described, and the remaining connecting portion 3B has the same configuration as the connecting portion 3A, and the description thereof will be omitted.

  For example, as shown in FIG. 2, the connecting portion 3 </ b> A includes a spring portion (hereinafter, “first spring portion”) 31. The connecting portion 3A includes one first spring portion 31, for example.

  As shown in FIG. 4B, the first spring portion 31 includes a frame 33 and a pair of connection pieces 34A and 34B.

  The frame 33 is formed in a rectangular frame shape (for example, a rectangular frame shape). The thickness dimension of the frame 33 is set to a size within a range of 0.08 mm to 0.2 mm, for example. The width dimension in the first direction of the first end in the first direction (the upper end in FIGS. 2 and 4B) of the frame 33 is, for example, in the range of 0.08 mm to 0.2 mm. Is set. The width dimension in the first direction of the second end portion (the lower end portion in FIGS. 2 and 4B) of the first direction in the frame 33 is, for example, a size within a range of 0.08 mm to 0.2 mm. Is set.

  The frame 33 is arranged inside the frame 1 so that the longitudinal direction of the frame 33 (the left-right direction in FIGS. 2 and 4B) coincides with the second direction.

  The pair of connection pieces 34 </ b> A and 34 </ b> B are configured to connect the frame 33 between the frame 1 and the movable plate 2. The thickness dimension of each of the pair of connection pieces 34A and 34B is set to a size within a range of 0.08 mm to 0.2 mm, for example.

  The connection piece 34A is attached to a first end (upper end in FIG. 4B) of the frame 33 in the first direction (vertical direction in FIG. 4B). A first end (upper end in FIG. 4B) of the connection piece 34A is connected to a second spring portion 32 described later. A second end (lower end in FIG. 4B) of the connection piece 34 </ b> A is connected to the first end of the frame 33.

  The connection piece 34B is attached to the second end portion (the lower end portion in FIG. 4B) of the frame 33 in the first direction. A first end (upper end in FIG. 4B) of the connection piece 34 </ b> B is connected to the second end of the frame 33. A second end (lower end in FIG. 4B) of the connection piece 34 </ b> B is connected to the movable plate 2.

  In addition to the first spring portion 31, the connecting portion 3A further includes a second spring portion 32 (see FIG. 2). The connection portion 3A includes one second spring portion 32, for example.

  The 2nd spring part 32 is formed in the shape different from the 1st spring part 31 (refer FIG. 4A).

  The second spring portion 32 includes a pair of first rod bodies 35 </ b> A and 35 </ b> B and a second rod body 36.

  Each of the pair of first rod bodies 35A and 35B is formed, for example, in a quadrangular cross section. The thickness dimension of each of the pair of first rod bodies 35A and 35B is set to a size within a range of 0.08 mm to 0.2 mm, for example. The width dimension in the first direction of the first rod body 35A is set to a size within a range of 0.08 mm to 0.2 mm, for example. The width dimension in the first direction of the first rod body 35B is set to a size within a range of 0.08 mm to 0.2 mm, for example.

  Each of the pair of first rod bodies 35A and 35B is disposed along the second direction. More specifically, the first rod body 35A is arranged inside the frame 1 so that the axial direction of the first rod body 35A (the left-right direction in FIGS. 2 and 4A) coincides with the second direction. Has been. Further, the first rod body 35B is arranged inside the frame 1 so that the axial direction of the first rod body 35B (the left-right direction in FIGS. 2 and 4A) coincides with the second direction.

  Both ends (the right end and the left end in FIG. 4A) of each of the pair of first rod bodies 35A and 35B are attached to both ends in the second direction of the frame 1 (the right end and the left end in FIG. 4A). Specifically, the first end (the right end in FIG. 4A) of the first rod body 35A is attached to the first end (the right end in FIG. 4A) of the frame 1 in the second direction. The second end (the left end in FIG. 4A) of the first rod 35A is attached to the second end (the left end in FIG. 4A) of the frame 1 in the second direction.

  The second rod body 36 is formed, for example, in a quadrangular cross section. The thickness dimension of the 2nd rod 36 is set as a size in the range of 0.08 mm-0.2 mm, for example.

  The second rod body 36 is disposed along the first direction. More specifically, the second rod body 36 is arranged inside the frame 1 so that the axial direction (vertical direction in FIGS. 2 and 4A) of the second rod body 36 coincides with the first direction. Has been.

  The 1st end (in FIG. 4A upper end) of the 2nd rod 36 is attached to the center part of 35 A of 1st rods. The center portion of the second rod body 36 is attached to the center portion of the first rod body 35B. The second end (the lower end in FIG. 4A) of the second rod body 36 is attached to the movable plate 2 via the first spring portion 31.

  In the vibration structure 100, for example, the magnet block 10 faces in one direction of the first direction (lower left direction in FIG. 5) due to vibration (external vibration) generated at the place where the vibration structure 100 is installed. When displaced (moved), the amount of magnetic flux passing through the second core 5B increases. In the vibration structure 100, for example, when the magnet block 10 is displaced in the one direction due to the external vibration, the amount of magnetic flux passing through the first core 5A is reduced. As a result, in the vibration structure 100, the amount of magnetic flux passing through each of the cores 5A and 5B changes, so that an induced electromotive force is generated in each of the windings 6A and 6B according to Faraday's law of electromagnetic induction. In the vibration structure 100, for example, an alternating current having a frequency of 30 Hz flows through each of the windings 6A and 6B. In FIG. 5, the frame 1, the pair of connecting portions 3A and 3B, the pair of windings 6 and 6, and the pair of weights 70 and 70 are not shown. Further, the arrows in FIG. 5 schematically represent the amount of magnetic flux passing through the cores 5A and 5B.

  By the way, each of the first core 5A and the second core 5B has an opposing surface A1 that faces the magnet block 10 in the second direction as the magnet block 10 vibrates in the first direction (see FIG. 5). It arrange | positions so that the area of may change. More specifically, each of the pair of first leg portions 8A and 8B and the pair of second leg portions 8A and 8B is provided with the above-described facing surface A1.

  In the vibrating structure 100, when the magnet block 10 is in a stationary state where it does not vibrate, the areas of the facing surfaces A1 of the first core 5A and the second core 5B are zero. In the vibrating structure 100, for example, when the magnet block 10 is displaced in the one direction, the area of the facing surface A1 of the second core 5B increases. On the other hand, in the vibrating structure 100, when the magnet block 10 is displaced in the one direction, the area of the facing surface A1 of the first core 5A remains zero. Thereby, in the vibration structure 100, when the magnet block 10 vibrates in the first direction, the magnet block 10 is less likely to be attracted to the cores 5A and 5B as compared with the energy conversion device described in Patent Document 1. In other words, in the vibrating structure 100, when the magnet block 10 vibrates in the first direction, the magnet 4 is less likely to be attracted to the cores 5A and 5B as compared with the energy conversion device described in Patent Document 1.

  The connecting portion 3A is designed so that the stress when the magnet block 10 vibrates in the first direction is less than the fatigue limit of the connecting portion 3A. Specifically, the connecting portion 3A is designed so that the maximum displacement of the connecting portion 3A is ± 1.6 mm. In addition, below, since the connection part 3B is the same structure as the connection part 3A, description is abbreviate | omitted.

  The connecting portion 3A is designed so as not to be displaced in the second direction. More specifically, as shown in FIG. 6, the connecting portion 3A is designed so that ky / kx is small when the spring constant in the first direction is ky and the spring constant in the second direction is kx. Has been. Thereby, in the vibration structure 100, when the magnet block 10 vibrates in the said 1st direction, the magnet block 10 becomes difficult to adsorb | suck to each core 5 and 5B more.

  By the way, the inventor of the present application has considered a vibration structure (hereinafter referred to as “vibration structure of a comparative example”) when the connecting portion 3A includes only the first spring portion 31.

  In the vibration structure of the comparative example, when the first spring portion 31 is deformed by the maximum displacement of the connecting portion 3A, there is a possibility that the connecting portion 3A is broken due to stress when the magnet block 10 vibrates in the first direction. is there.

  On the other hand, in the vibration structure 100, the connecting portion 3 </ b> A further includes a second spring portion 32 in addition to the first spring portion 31. Thereby, in the vibration structure 100, each of the 1st spring part 31 and the 2nd spring part 32 deform | transforms by the displacement (+/- 0.8mm) of half of the maximum displacement of the connection part 3A. Therefore, in the vibration structure 100, it is possible to suppress the breakage of the connecting portion 3A due to the stress when the magnet block 10 vibrates in the first direction as compared with the vibration structure of the comparative example.

  In the vibrating structure 100, the second spring portion 32 includes a pair of first rod bodies 35 </ b> A and 35 </ b> B and a second rod body 36. In the vibration structure 100, both ends of the pair of first rod bodies 35 </ b> A and 35 </ b> B are attached to both ends of the frame 1 in the second direction. Thereby, in the vibration structure 100, it becomes possible to suppress that the spring constant (kx in FIG. 6) of the said 2nd direction in the connection part 3A becomes small. Therefore, in the vibration structure 100, the displacement of the connecting portion 3A in the second direction can be further suppressed. As a result, in the vibrating structure 100, when the magnet block 10 vibrates in the first direction, the magnet block 10 becomes more difficult to be attracted to the cores 5 and 5B.

  The vibration structure 100 includes the pair of cores 5 and 5, but is not limited thereto, and may include only one core 5 of the pair of cores 5 and 5. In this case, the vibration structure 100 includes only one of the pair of windings 6 and 6.

  In the vibration structure 100, the frame 1, the movable plate 2, and the pair of connecting portions 3 </ b> A and 3 </ b> B are formed of a single plate material, but this is not a limitation. After the frame 1, the movable plate 2 and the pair of connecting portions 3A and 3B are individually molded, the frame 1, the movable plate 2 and the pair of connecting portions 3A and 3B are assembled by, for example, laser welding. It may be formed. However, in the vibration structure 100, it is possible to improve productivity by forming the frame 1, the movable plate 2, and the pair of connecting portions 3A and 3B from one plate material.

  In the vibration structure 100, the pair of cores 5 and 5 are configured separately from the frame 1, but are not limited thereto. The pair of cores 5 and 5 may be provided on a part of the frame 1.

  The magnet block 10 includes the first yoke pair 21, the second yoke pair 22, and the pair of weights 70, 70 in addition to the magnet 4, but is not limited thereto. The magnet block 10 may have only the magnet 4, the first yoke pair 21, and the second yoke pair 22. The magnet block 10 may have only the magnet 4. In other words, the magnet block 10 may be composed of the magnet 4.

  The magnet block 10 includes the first yoke pair 21 and the second yoke pair 22, but may include only the first yoke pair 21, for example. In this case, the magnet block 10 has only the first magnet 41. However, in the vibration structure 100, the magnet block 10 includes the first magnet 41 and the second magnet 42, thereby increasing the amount of power generation compared to the case where the magnet block 10 includes only the first magnet 41. It becomes possible to make it.

  The vibration structure 100 described above is provided on both sides of the movable plate 2 in the frame-shaped frame 1, the movable plate 2 disposed inside the frame 1, and the first direction orthogonal to the thickness direction of the movable plate 2. A pair of connecting portions 3A and 3B for connecting the frame 1 and the movable plate 2 are provided. The vibration structure 100 includes a magnet block 10 including the magnet 4, a core 5 that forms a magnetic circuit through which the magnetic flux of the magnet block 10 passes, and a winding 6 that is wound around the core 5. The pair of connecting portions 3 </ b> A and 3 </ b> B support the movable plate 2 such that it can vibrate in the first direction with respect to the frame 1. The magnet block 10 is attached to the movable plate 2 so that the magnetization direction of the magnet block 10 coincides with a second direction orthogonal to both the thickness direction and the first direction. The core 5 is provided in a part of the frame 1. The core 5 is disposed so that the area of the facing surface A1 that faces the magnet block 10 in the second direction changes as the magnet block 10 vibrates in the first direction. Thereby, in the vibration structure 100, when the magnet block 10 vibrates in the first direction, the magnet block 10 is less likely to be attracted to the core 5 as compared with the energy conversion device described in Patent Document 1. In other words, in the vibration structure 100, when the magnet block 10 vibrates in the first direction, the magnet 4 is less likely to be attracted to the core 5 than the energy conversion device described in Patent Document 1.

  As described above, the core 5 preferably includes the first core 5A and the second core 5B. As described above, the frame 1 is preferably formed in a rectangular frame shape. As described above, the first core 5A is preferably disposed at the first end of the frame 1 in the first direction. As described above, the second core 5B is preferably disposed at the second end of the frame 1 in the first direction. Thereby, in the vibration structure 100, compared with the case where the core 5 has only the 1st core 5A, for example, it becomes possible to increase electric power generation amount.

  As described above, each of the first core 5A and the second core 5B includes a rod-shaped base portion 7 and a pair of leg portions 8 and 8 provided so as to protrude from both ends of the base portion 7 along the first direction. Are preferably provided. As described above, the magnet block 10 is preferably configured in a rectangular plate shape. As described above, the pair of first legs, which are the pair of legs 8 of the first core 5A, are in the stationary state where the magnet block 10 is not vibrating, as described above. However, it is preferable that it is comprised so that it may be located in the same plane as the side surface near the 1st core 5A among the both sides | surfaces of the said 1st direction in the magnet block 10. FIG. As described above, the pair of second legs that are the pair of legs 8 and 8 of the second core 5B are such that the distal end surfaces 9 of the pair of second legs are in the magnet block 10 in the stationary state. It is preferable to be configured so as to be located in the same plane as the side surface close to the second core 5B among the both side surfaces in the first direction. Each of the pair of first legs and the pair of second legs is preferably provided with the facing surfaces as described above. Thereby, in the vibration structure 100, when the magnet block 10 is in a stationary state, it is possible to suppress the magnet block 10 from adsorbing to the cores 5A and 5B as compared with the energy conversion device described in Patent Document 1. Become. In other words, in the vibration structure 100, when the magnet block 10 is stationary, it is possible to suppress the magnet 4 from adsorbing to the cores 5A and 5B as compared with the energy conversion device described in Patent Document 1. . Further, in the vibrating structure 100, when the magnet block 10 is displaced to the position when it is stationary, the attractive force generated between the magnet block 10 and each of the cores 5A and 5B is released (cancelled). The displacement of the magnet block 10 can be stabilized.

  As described above, the core 5 is preferably configured separately from the frame 1. The frame 1, the movable plate 2, and the pair of connecting portions 3A and 3B are preferably formed from a single plate material as described above. Thereby, in the vibration structure 100, it becomes possible to improve productivity compared with the case where the flame | frame 1, the movable plate 2, and a pair of connection part 3A, 3B are not formed with one board | plate material.

  As described above, the base 7 is preferably formed in a quadrangular cross section. As described above, the base portion 7 is preferably arranged so that the longitudinal direction thereof coincides with the second direction. As described above, the winding 6 is preferably wound around the base 7. As described above, each of the pair of leg portions 8 and 8 is preferably formed with the holding portion 11 that holds the frame 1 at the center portion in the thickness direction. Thereby, in the vibration structure 100, compared with the case where the holding part 11 is not formed in the said center part of a pair of leg parts 8 and 8, it becomes possible to achieve size reduction.

  As described above, the magnet block 10 preferably includes the first magnet 41 and the second magnet 42 as the magnet 4. The first magnet 41 is preferably attached to the first surface in the thickness direction of the movable plate 2. The second magnet 42 is preferably attached to the second surface in the thickness direction of the movable plate 2. Thereby, in the vibration structure 100, compared with the case where the magnet block 10 has only the 1st magnet 41, it becomes possible to increase electric power generation amount, for example.

  As described above, the magnet block 10 preferably includes the first yoke pair 21 and the second yoke pair 22 each including a pair of yoke pieces 23A and 23B. The first yoke pair 21 is configured such that the first magnet 41 is sandwiched between the pair of yoke pieces 23A and 23B, and the pair of yoke pieces 23A and 23B are aligned with the first magnet 41 along the second direction. It is preferable that the movable plate 2 is attached to the first surface. The second yoke pair 22 is configured such that the second magnet 42 is sandwiched between the pair of yoke pieces 23A and 23B, and the pair of yoke pieces 23A and 23B are aligned with the second magnet 42 along the second direction. The movable plate 2 is preferably attached to the second surface. Thereby, in the vibration structure 100, for example, the distance (gap) between the first magnet 41 and the pair of leg portions 8A and 8B can be reduced. Therefore, in the vibration structure 100, for example, compared to a case where the magnet block 10 does not include the first yoke pair 21 and the second yoke pair 22, it is possible to increase the amount of power generation.

  In the vibration structure 100, the magnet block 10 includes the first yoke pair 21 and the second yoke pair 22, so that the distance (gap) between the magnet block 10 and the pair of leg portions 8A and 8B. Can be adjusted. As a result, in the vibration structure 100, when the magnet block 10 vibrates in the first direction, the magnet block 10 is less likely to be attracted to the cores 5A and 5B.

  As described above, the weight 4 is preferably fixed to the magnet 4. Thereby, in the vibration structure 100, the resonance frequency of the movable plate 2 can be adjusted by appropriately setting the mass of the weight 70. Therefore, in the vibration structure 100, the resonance frequency of the movable plate 2 can be matched with the vibration frequency of the installation environment. As a result, in the vibration structure 100, the movable plate 2 is driven to resonate (the movable plate 2 is greatly displaced), so that the amount of power generation can be increased.

  Each of the pair of connecting portions 3A and 3B is preferably formed to have elasticity as described above. As described above, each of the pair of connecting portions 3A and 3B includes a rectangular frame 33, and a pair of connection pieces 34A and 34B that connect the frame 33 between the frame 1 and the movable plate 2. It is preferable to include the spring portion 31 provided. Thereby, in the vibration structure 100, in the vibration structure 100, the resonance frequency of the movable plate 2 can be adjusted by appropriately setting the elastic coefficients of the pair of connecting portions 3A and 3B. Therefore, in the vibration structure 100, the resonance frequency of the movable plate 2 can be matched with the vibration frequency of the installation environment. As a result, in the vibration structure 100, the movable plate 2 is driven to resonate, so that the amount of power generation can be increased.

  As described above, each of the pair of connecting portions 3A and 3B preferably includes the first spring portion which is the spring portion 31 and the second spring portion 32 having a shape different from that of the first spring portion. . As described above, the second spring portion 32 includes a pair of first rod bodies 35A and 35B arranged along the second direction and a second rod body 36 arranged along the first direction. It is preferable to provide. It is preferable that both ends of the pair of first rod bodies 35A and 35B are attached to both ends of the frame 1 in the second direction. It is preferable that the 1st end of the 2nd rod 36 is attached to the center part of one 1st rod 35A among a pair of 1st rods 35A and 35B. It is preferable that the center part of the 2nd rod body 36 is attached to the center part of the other 1st rod body 35B among a pair of 1st rod bodies 35A and 35B. The second end of the second rod 36 is preferably attached to the movable plate 2 via the first spring portion. Accordingly, in the vibration structure 100, each of the first spring portion 31 and the second spring portion 32 can be deformed with a displacement that is half the maximum displacement of the connecting portion 3A. Therefore, in the vibration structure 100, compared with the case where each of the pair of connection portions 3A and 3B includes only the first spring portion 31, the stress when the magnet block 10 vibrates in the first direction is reduced. It becomes possible to suppress breakage of the connecting portions 3A and 3B.

  Further, in the vibration structure 100, each of the pair of connecting portions 3A and 3B includes the first spring portion 31 and the second spring portion 32, and thus the second direction of each of the pair of connecting portions 3A and 3B. The spring constant (kx in FIG. 6) can be suppressed from becoming smaller. Therefore, in the vibration structure 100, it is possible to further suppress the displacement of each of the pair of connecting portions 3A and 3B in the second direction. As a result, in the vibrating structure 100, when the magnet block 10 vibrates in the first direction, the magnet block 10 becomes more difficult to be attracted to the cores 5 and 5B.

  Moreover, in the vibration structure 100, since it can suppress more that each of a pair of connection part 3A, 3B displaces to the said 2nd direction, between magnet block 10 and a pair of leg part 8A, 8B. It is possible to reduce the distance (void). As a result, in the vibration structure 100, it is possible to increase the amount of power generation as compared with the case where each of the pair of connection portions 3A and 3B includes only the first spring portion 31.

  Below, the vibration electric power generating apparatus 300 provided with the vibration structure 100 is demonstrated based on FIG. 7A.

  The vibration power generation apparatus 300 includes, for example, the vibration structure 100, a rectifier circuit 200 that rectifies an induced electromotive force generated by the pair of windings 6 and 6, and a pair of connection terminals 210A and 210B. In FIG. 7A, illustration of the configuration other than the pair of windings 6 and 6 in the vibration structure 100 is omitted.

  The rectifier circuit 200 is, for example, a diode bridge. The rectifier circuit 200 is electrically connected to, for example, a pair of windings 6 and 6 connected in series.

  More specifically, a pair of windings 6 and 6 connected in series are electrically connected between a pair of input terminals in the rectifier circuit 200.

  Of the pair of output terminals in the rectifier circuit 200, the output terminal on the high potential side is electrically connected to the connection terminal 210A. The output terminal on the low potential side of the pair of output terminals in the rectifier circuit 200 is electrically connected to the connection terminal 210B.

  In the vibration power generator 300, a pair of windings 6 and 6 connected in series are electrically connected between a pair of input ends of the rectifier circuit 200, but the present invention is not limited to this. In the vibration power generator 300, for example, as shown in FIG. 7B, a pair of windings 6 and 6 connected in parallel may be electrically connected between a pair of input ends of the rectifier circuit 200.

  In the vibration power generation apparatus 300, since the first winding 6A and the second winding 6B are connected in series, for example, compared with the case where the vibration structure 100 includes only the first winding 6A, the amount of power generation Can be increased.

  Further, in the vibration power generation apparatus 300, each of the first winding 6A and the second winding 6B is used as a power generation winding, but the present invention is not limited thereto. In the vibration power generator 300, the first winding 6A can be used as a power generation winding, and the second winding 6B can be used as a sensor winding.

  The vibration power generation apparatus 300 described above includes the vibration structure 100 and the rectifier circuit 200 that rectifies the induced electromotive force generated in the winding 6. The rectifier circuit 200 is electrically connected to the winding 6. Thereby, the vibration power generation apparatus 300 can be provided with the vibration power generation apparatus 300 using the vibration structure 100 in which the magnet 4 is difficult to be attracted to the core 5. In the vibration power generation apparatus 300, the vibration power generation apparatus 300 can be used as an energy harvester or a sensor (vibration sensor).

(Embodiment 2)
Below, the vibration structure 110 of Embodiment 2 is demonstrated based on FIG. 8 and FIG. The basic configuration of the vibration structure 110 is the same as that of the vibration structure 100 of the first embodiment. Further, as shown in FIG. 8, the vibration structure 110 is vibrated in that a support surface 12 is formed on one surface (the upper surface in FIG. 8) in the thickness direction of each of the pair of legs 8A and 8B. Different from the structure 100. Note that in the vibration structure 110 of the second embodiment, the same components as those of the vibration structure 100 of the first embodiment are denoted by the same reference numerals, and description thereof is omitted as appropriate. Moreover, the vibration structure 110 may be applied to the vibration power generation apparatus 300 of the first embodiment, for example.

  Each of the plurality of support surfaces 12 is configured to support the frame 1. In the vibration structure 110, after the frame 1 is supported by the support surfaces 12, the frame 1 is fixed to the support surfaces 12 by laser welding or the like, for example.

  In the vibration structure 110, as shown in FIG. 9, an attractive force (hereinafter referred to as “first attractive force”) F1 is generated between the magnet block 10 and the first core 5A. In the vibration structure 110, as shown in FIG. 9, an attractive force (hereinafter referred to as “second attractive force”) F2 is generated between the magnet block 10 and the second core 5B. As a result, in the vibration structure 110, as shown in FIG. 9, a force (hereinafter referred to as “combined force”) Fm obtained by combining the first suction force F1 and the second suction force F2 is generated vertically downward.

  By the way, the power generation amount of the vibration structure 110 is Pe, the mass of the magnet block 10 is m, the electrical damping ratio is re, the mechanical damping ratio is rm, the vibration acceleration is A, and the resonance frequency is ω. Then, it is calculated | required by following Formula.

振動構造体１１０の発電量と磁石ブロック１０の質量との関係は、式（１）に示す通り、比例関係にある。すなわち、振動構造体１１０の発電量は、振動加速度が一定であるとき、磁石ブロック１０の質量が大きくなるに従って、増加する傾向にある。

The relationship between the power generation amount of the vibration structure 110 and the mass of the magnet block 10 is proportional as shown in the equation (1). That is, the power generation amount of the vibration structure 110 tends to increase as the mass of the magnet block 10 increases when the vibration acceleration is constant.

  In the vibration structure 110, the resultant force Fm is applied in addition to the self-weight of the magnet block 10, so that the mass of the magnet block 10 effectively increases compared to the vibration structure 100 of the first embodiment. In other words, in the vibration structure 110, in addition to the weight of the magnet block 10, the weight corresponding to (the resultant force Fm / gravity acceleration) increases quantitatively. Thereby, in the vibration structure 110, compared with the vibration structure 100 of Embodiment 1, it becomes possible to increase electric power generation amount.

  In the vibration structure 110 described above, the base 7 is formed in a quadrangular cross section. The base portion 7 is arranged so that the longitudinal direction coincides with the second direction. A winding 6 is wound around the base portion 7. Each of the pair of leg portions 8A, 8B is formed in a quadrangular cross section. Each of the pair of leg portions 8A and 8B is formed with a support surface 12 for supporting the frame 1 on one surface in the thickness direction. Thereby, in the vibration structure 110, since the resultant force Fm is applied in addition to the self-weight of the magnet block 10, the mass of the magnet block 10 can be increased as compared with the vibration structure 100 of the first embodiment. Therefore, in the vibration structure 110, the amount of power generation can be increased as compared with the vibration structure 100 of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Frame 2 Movable plate 3A, 3B A pair of connection part 4 Magnet 5 Core 5A 1st core 5B 2nd core 6 Winding 7 Base 8A, 8B A pair of leg part 9 Tip surface 10 Magnet block 11 Holding part 12 Support surface 21 1st 1 yoke pair 22 2nd yoke pair 23A, 23B A pair of yoke pieces 31 Spring portion (first spring portion)
32 Second spring portion 33 Frame 34A, 34B A pair of connecting pieces 35A, 35B A pair of first rod 36 36 Second rod 41 First magnet 42 Second magnet 70 Weight 100 Vibration structure 110 Vibration structure 200 Rectification circuit 300 Vibration generator A1 Opposite surface

Claims (12)

A pair of frames that are provided on both sides of the movable plate in a first direction perpendicular to the thickness direction of the movable plate, and connect the frame and the movable plate in a first direction orthogonal to the thickness direction of the movable plate. A magnet block including a magnet, a core that forms a magnetic circuit through which the magnetic flux of the magnet block passes, and a winding wound around the core,
The pair of connecting portions support the movable plate so as to be capable of vibrating in the first direction with respect to the frame,
The magnet block is attached to the movable plate so that the magnetization direction of the magnet block coincides with a second direction orthogonal to both the thickness direction and the first direction,
The core is provided in a part of the frame,
The core is arranged so that the area of the facing surface facing the magnet block in the second direction changes as the magnet block vibrates in the first direction. Vibration structure. The core has a first core and a second core,
The frame is formed in a rectangular frame shape,
The first core is disposed at a first end of the frame in the first direction;
The vibrating structure according to claim 1, wherein the second core is disposed at a second end portion of the frame in the first direction. Each of the first core and the second core includes a rod-like base portion and a pair of leg portions provided so as to protrude from both ends of the base portion along the first direction,
The magnet block is configured in a rectangular plate shape,
The pair of first legs, which are the pair of legs of the first core, are in a stationary state in which the magnet block is not vibrating, and the distal end surfaces of the pair of first legs are arranged in the magnet block. It is configured to be located in the same plane as the side surface close to the first core among the both side surfaces in the first direction,
The pair of second legs, which are the pair of legs of the second core, in the stationary state, the tip surfaces of the pair of second legs are on both side surfaces of the magnet block in the first direction. Among them, it is configured to be located on the same plane as the side surface close to the second core,
The vibration structure according to claim 2, wherein each of the pair of first legs and the pair of second legs is provided with the facing surface. The core is configured separately from the frame,
The vibration structure according to claim 3, wherein the frame, the movable plate, and the pair of connecting portions are formed of a single plate material. The base is formed in a quadrangular cross section,
The base is arranged such that the longitudinal direction thereof coincides with the second direction,
The winding is wound around the base,
The vibrating structure according to claim 4, wherein each of the pair of leg portions is formed with a holding portion that holds the frame at a central portion in the thickness direction. The base is formed in a quadrangular cross section,
The base is arranged such that the longitudinal direction thereof coincides with the second direction,
The winding is wound around the base;
Each of the pair of legs is formed in a square cross section,
The vibration structure according to claim 4, wherein each of the pair of leg portions has a support surface that supports the frame on one surface in the thickness direction. The magnet block has a first magnet and a second magnet as the magnet,
The first magnet is attached to the first surface in the thickness direction of the movable plate,
The vibrating structure according to any one of claims 1 to 6, wherein the second magnet is attached to a second surface in a thickness direction of the movable plate. The magnet block has a first yoke pair and a second yoke pair, each consisting of a pair of yoke pieces,
The first yoke pair is configured so that the pair of yoke pieces sandwich the first magnet, and the pair of yoke pieces are aligned with the first magnet along the second direction. Attached to the first surface;
The second yoke pair is configured so that the pair of yoke pieces sandwich the second magnet, and the pair of yoke pieces are aligned with the second magnet along the second direction. The vibration structure according to claim 7, wherein the vibration structure is attached to the second surface. The vibration structure according to any one of claims 1 to 8, wherein a weight is fixed to the magnet. Each of the pair of connecting portions is formed to have elasticity,
Each of the pair of connecting portions includes a spring portion including a rectangular frame-shaped frame body and a pair of connection pieces that connect the frame body between the frame and the movable plate. The vibration structure according to any one of claims 1 to 9, wherein the vibration structure is characterized in that: Each of the pair of connecting portions includes a first spring portion which is the spring portion, and a second spring portion having a shape different from the first spring portion,
The second spring portion includes a pair of first rods arranged along the second direction, and a second rod arranged along the first direction,
Both ends of the pair of first rods are attached to both ends of the frame in the second direction,
The first end of the second rod is attached to the central portion of one of the pair of first rods, and the central portion of the second rod is the pair of first rods. The second end of the second rod is attached to the movable plate via the first spring portion. The second rod is attached to the center of the other first rod. 10. The vibration structure according to 10. A vibration structure according to any one of claims 1 to 11, and a rectifier circuit that rectifies an induced electromotive force generated in the winding,
The vibration power generation apparatus, wherein the rectifier circuit is electrically connected to the winding.

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