Vibration dynamo device and dynamo device with switch mechanism

Abstract

To provide a vibration dynamo device and a dynamo device with a switch mechanism, for improving power generation efficiency.SOLUTION: A vibrating dynamo device (1) includes: a non-magnetic tubular member (10) having an internal space (17) and openings at both ends; a coil (30) arranged on an outer periphery of the tubular member; a magnet (40) arranged in an inner space of the tubular member, capable of reciprocating along an extending direction of the tubular member; and a pair of sheet materials (50) elastically bendable and deformable along the extending direction of the tubular member. The sheet material includes: outer edge portions (51) fixed to both end portions in the extending direction of the tubular member; and a central portion (53) facing an internal space of the tubular member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vibration dynamo device and a dynamo device with a switch mechanism. [Background technology]

[0002] Conventionally, there are various power generation methods for converting vibration energy into electrical energy, including a method using electromagnetic induction, a method using a piezoelectric element, and a method using electrostatic induction. The method using electromagnetic induction changes the relative position between a coil and a magnet by vibration, and generates power by electromagnetic induction generated in the coil. Examples of such technologies include JP 2011-78197 A (Patent Document 1) and JP 2002-281727 A (Patent Document 2).

[0003] Patent Document 1 discloses a power generating device in which an elastic buffer is provided inside movement restricting portions provided at both ends of a cylindrical member to prevent damage due to contact between the permanent magnets and the movement restricting portions.

[0004] Patent Document 2 discloses a vibration power generator in which permanent magnets are provided at both ends of a cylindrical member, and a cushioning member serving as a rubber pad is provided inside the permanent magnets. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-78197 A [Patent Document 2] JP 2002-281727 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention focuses on the problem of poor power generation efficiency of the power generation devices of Patent Documents 1 and 2, and aims to address this problem. That is, the present invention aims to provide a vibration dynamo device and a dynamo device with a switch mechanism that improve power generation efficiency. [Means for solving the problem]

[0007] A vibration dynamo device according to one embodiment of the present invention comprises a non-magnetic tubular member having an internal space and open at both ends, a coil arranged on the outer periphery of the tubular member, a magnet arranged in the internal space of the tubular member and capable of reciprocating along the extension direction of the tubular member, and a pair of sheet materials including outer edge portions fixed to both ends in the extension direction of the tubular member and a central portion facing the internal space of the tubular member, and capable of elastically flexibly deforming along the extension direction of the tubular member.

[0008] Preferably, the inner diameter side wall surface of the tubular member forming the internal space includes a first region having a first inner diameter dimension and a second region having a second inner diameter dimension larger than the first inner diameter dimension and positioned so as to sandwich the first region, and the sheet material is fixed to the second region.

[0009] Preferably, the tubular member includes a first tubular body having opposite end lengths defined by a pair of sheet materials, and a second tubular body connected to the first tubular body with the sheet materials sandwiched therebetween.

[0010] Preferably, the second cylindrical body is provided with a lid portion closing an outer end portion thereof.

[0011] Preferably, the sheet material includes a ring portion constituting the outer edge, and a central portion and a rib portion constituting the central portion, the central portion being located at the center of the ring portion and spaced apart from the ring portion, and the rib portions are provided in plurality and connect the ring portion and the central portion.

[0012] Preferably, the magnet is a cylindrical body.

[0013] Preferably, the cover portion has a repulsive magnet that repels the magnet.

[0014] A dynamo device with a switch mechanism according to one embodiment of the present invention comprises a dynamo device including a non-magnetic tubular member having an internal space and open at both ends, a coil arranged on the outer periphery of the tubular member, a first magnet arranged in the internal space of the tubular member and capable of reciprocating along the extension direction of the tubular member, a pair of sheet materials having outer edges fixed to both ends in the extension direction of the tubular member and a central portion facing the internal space of the tubular member and capable of elastically flexibly deforming along the extension direction of the tubular member, and a switch mechanism arranged outside the tubular member and including a second magnet that acts on the first magnet and is displaceable between a first position and a second position, wherein the first magnet moves in the extension direction of the tubular member as the second magnet is displaced from the first position to the second position.

[0015] Preferably, a plurality of dynamo devices are provided at positions where the second magnet of the switch mechanism acts on the first magnet. Effect of the Invention

[0016] According to the vibration dynamo device and the dynamo device with a switch mechanism of the present invention, it is possible to improve the power generation efficiency. [Brief description of the drawings]

[0017] [Figure 1] 1 is a cross-sectional view that shows a schematic diagram of a vibration dynamo device according to a first embodiment of the present invention. [Diagram 2] FIG. 2(b) is a cross-sectional view taken along line IIb-IIb in FIG. 2(a) showing a sheet material according to a first embodiment of the present invention. FIG. [Diagram 3] 1 is a schematic circuit diagram of a chime device using a vibration dynamo device according to a first embodiment of the present invention. [Figure 4] 3A to 3C are diagrams illustrating the operation of the vibration dynamo device according to the first embodiment of the present invention. [Diagram 5] 10 is a cross-sectional view that shows a schematic diagram of a vibration dynamo device according to a second embodiment of the present invention. FIG. [Figure 6]FIG. 13 is a plan view showing a modified example of the sheet material. [Figure 7] FIG. 11 is a plan view showing another modified example of the sheet material. [Figure 8] FIG. 11 is a cross-sectional view showing a schematic diagram of a dynamo device with a switch mechanism according to a third embodiment of the present invention. [Figure 9] 13A to 13C are diagrams illustrating the operation of a dynamo device with a switch mechanism according to a third embodiment of the present invention. [Figure 10] FIG. 11 is a cross-sectional view that illustrates a schematic diagram of a modified example of a dynamo device with a switch mechanism according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and their description will not be repeated.

[0019] <Embodiment 1> A schematic configuration of a vibration dynamo device 1 according to an embodiment of the present invention will be described with reference to Figures 1 and 2. In Figure 1, the direction indicated by arrow A1 is referred to as the up-down direction, and the direction indicated by arrow A2 is referred to as the left-right direction.

[0020] The vibration dynamo device 1 of this embodiment comprises a tubular member 10, a coil 30 arranged on the outer periphery of the tubular member 10, a magnet 40 arranged in the internal space of the tubular member, and a pair of sheet materials 50 provided at both ends of the tubular member 10 in the extension direction.

[0021] The cylindrical member 10 has an internal space and is open at both ends. The cylindrical member 10 is a hollow rod with both ends open. The cylindrical member 10 of this embodiment extends in the left-right direction in FIG.

[0022] The cylindrical member 10 is made of a non-magnetic material. A non-magnetic material is a material that is not a ferromagnetic material, and includes paramagnetic materials, diamagnetic materials, and antiferromagnetic materials. Examples of non-magnetic materials include metals such as aluminum, and synthetic resins such as plastics.

[0023] The cylindrical member 10 includes a first cylindrical body 11 and a second cylindrical body 21 provided on both ends of the first cylindrical body 11. The lengths of both ends of the first cylindrical body 11 are defined by a pair of sheet materials 50. The second cylindrical bodies 21 are connected to both ends of the first cylindrical body 11, respectively, with the sheet materials 50 sandwiched therebetween.

[0024] As described above, the first cylindrical body 11 is hollow and rod-shaped, and includes a first outer diameter side wall surface 12 which is the outer circumference, and a first inner diameter side wall surface 13 which is the inner circumference. The shape (outer shape) of the first outer diameter side wall surface 12 and the first inner diameter side wall surface 13 (inner shape) are not particularly limited, and examples thereof include a circle, a rectangle, etc. in cross section. The outer shape and the inner shape of the cylindrical member 10 of this embodiment are circular in cross section. The inner diameter (diameter of the hollow shape) of the cylindrical member 10 of this embodiment is slightly larger than the outer diameter of the magnet 40 described later.

[0025] The first inner diameter side wall surface 13 has a first region 14 and a second region 15 having an inner diameter dimension larger than that of the first region 14. The first region 14 is located in the center, and the second region 15 is located so as to sandwich the first region 14. A step is provided between the first region 14 and the second region 15. In addition, a first internal space 17 in which a magnet 40 is disposed is provided within these regions 14 and 15.

[0026] A plurality of pins 16 protruding outward and penetrating the sheet material 50 and the second cylindrical body 21 may be provided on both ends of the first cylindrical body 11. The first cylindrical body 11 may also be provided with air holes 18 penetrating from the second region 15 of the first inner diameter side wall surface 13 toward the first outer diameter side wall surface 12.

[0027] A second cylindrical body 21 is provided at both ends of the first cylindrical body 11. The second cylindrical body 21 is cylindrical, and includes a second outer diameter side wall surface 22, which is the outer circumference, and a second inner diameter side wall surface 23, which is the inner circumference. The second outer diameter side wall surface 22 is flush with the first outer diameter side wall surface 12. Similarly, the second inner diameter side wall surface 23 is flush with the second region 15 of the first cylindrical body 11. The second cylindrical body 21 is provided with a pin hole portion 24 through which the multiple pins 16 of the first cylindrical body 11 penetrate. A second internal space 25 is provided in the second inner diameter side wall surface 23. Unlike the first internal space 17 of the first cylindrical body 11, the second internal space 25 does not include a magnet 40. The second internal space 25 is a space for allowing the sheet material 50 to bend and deform.

[0028] The second cylindrical body 21 is provided with a lid portion 26 that closes the outer end portion thereof. The lid portion 26 is formed of a non-magnetic material such as plastic, synthetic resin, etc. In the present embodiment, the lid portion 26 is a rubber plate.

[0029] A coil 30 is wound around the first outer diameter side wall surface 12 of the first cylindrical body 11. Therefore, the cylindrical member 10 also serves as a bobbin for the coil 30. The coil 30 in this embodiment is provided in the center of the cylindrical member 10. The coil 30 is, for example, a solenoid coil.

[0030] A magnet 40 is provided in the first internal space 17 of the first cylindrical body 11 so as to be capable of reciprocating along the extension direction of the cylindrical member 10 (the left-right direction of the arrow A2 in FIG. 1). Since the coil 30 is disposed on the outer periphery of the cylindrical member 10, the magnet 40 reciprocates inside the coil 30. The reciprocating motion of the magnet 40 causes the coil 30 to generate a voltage. In other words, since the magnet 40 reciprocates along the winding axis direction of the coil 30, an AC current is generated in the coil 30.

[0031] The magnet 40 is, for example, a cylinder or a sphere. The term "sphere" and "cylinder" refers to a shape that is spherical or cylindrical, and includes a hollow shape. The term "cylinder" refers to a cylindrical body, a prismatic body, a disk shape, and the like, and is a cylinder in this embodiment. When the magnet 40 is a sphere, it is preferable to provide a plurality of magnets.

[0032] The magnet is a permanent magnet. The magnet is magnetized in the direction of reciprocating motion (axial direction). There are no particular limitations on the magnetization method, but an example is a method in which a magnetic material is fixed to the center of an air-core coil and a high pulse current is passed through it to magnetize it in the axial direction. There are no particular limitations on the material of the magnet, but it is preferable to use a Nd-Fe-B sintered magnet from the viewpoint of exhibiting high magnetic force.

[0033] A pair of sheet materials 50 are provided at both ends of the first cylindrical body 11 of the cylindrical member 10. The pair of sheet materials 50 close the opening of the first cylindrical body 11. The sheet material 50 is elastically deformable along the extension direction of the cylindrical member 10. The sheet material 50 is a non-magnetic material, and examples of the material include metals such as aluminum and synthetic resins such as plastic. In this embodiment, the sheet material 50 is a plate-shaped rubber or elastomer, and is preferably a synthetic rubber such as silicone rubber in consideration of ozone degradation and the like.

[0034] The sheet material 50 varies depending on the size of the outer shape of the magnet 40, but from the viewpoint of ease of bending deformation, the thinner the sheet material 50, the more preferable, and the thickness is, for example, 0.1 mm to 1 mm, and preferably 0.1 mm to 0.6 mm. If it is less than 0.1 mm, it is poorly moldable, and if it exceeds 1 mm or 0.6 mm, it is difficult to bend. In addition, the hardness of the sheet material 50 is, for example, 20° to 70° in Durometer A hardness, and preferably 40° to 60°. If it exceeds 60° or 70°, it is poorly moldable, and if it is less than 20° or 40°, it is high in adhesive strength.

[0035] 1 and 2, the outer shape of the sheet material 50 is, for example, a substantially circular shape in plan view. Specifically, the sheet material 50 includes an outer edge portion 51 fixed to both ends in the extension direction of the cylindrical member 10, and a central portion 52 facing the internal spaces 17 and 25 of the cylindrical member 10. The outer edge portion 51 is a ring-shaped ring portion. The central portion 52 has a central portion 53 located at the center of the ring portion 51 and spaced apart from the ring portion 51, and a plurality of rib portions 54 that connect the ring portion 51 and the central portion 53. As a result, six through holes 56 having a trapezoidal shape in plan view are provided between the outer edge portion 51 and the central portion 53. By providing the plurality of through holes 56 and the rib portions 54, the sheet material 50 becomes more flexible.

[0036] The outer edge portion 51 may have a plurality of holes 55 along the outer periphery of the sheet material 50. The pin 16 provided at the outer end of the first cylindrical body 11 penetrates the hole 55 and engages with the pin hole 24 provided at the inner end of the second cylindrical body 21, so that the sheet material 50 is fixed between the first cylindrical body 11 and the second cylindrical body 21. Specifically, the sheet material 50 is fixed to the second region 15 of the first cylindrical body 11. As a result, even when the magnet 40 reciprocates and the sheet material 50 is bent in the left-right direction, the first inner diameter side wall surface 13 of the first cylindrical body 11 does not get in the way, and the sheet material 50 can be easily bent.

[0037] In addition, since the sheet material 50 is flexibly deformed, the magnet 40 can efficiently reciprocate. Therefore, even if the length of the first cylindrical body 11 in the longitudinal direction is made shorter than that of conventional vibration dynamo devices, sufficient power generation efficiency can be obtained.

[0038] The vibration dynamo device 1 of this embodiment is used in devices that can generate electricity through vibration, such as a chime device, a wireless mouse for operating a personal computer, a walking stick with a light, a backpack light, etc. Below, a circuit in which the vibration dynamo device 1 is used as a chime device 100 will be described as an example.

[0039] 3 is an equivalent circuit diagram when the vibration dynamo device 1 of the present embodiment is used in a chime device 100. Referring to FIG. 3, the chime device 100 includes the vibration dynamo device 1 described above, a rectifier circuit 61, a charging circuit 62, a sound generating device 63, and a switch 64.

[0040] Rectifier circuit 61 is provided at one end of coil 30 (FIG. 1) and rectifies the AC current generated in coil 30. Charging circuit 62 charges the DC current converted by rectifier circuit 61. An electric double layer capacitor, for example, is used for charging circuit 62. Sound generating device 63 is not particularly limited as long as it generates sound when current is applied, and for example, a buzzer, a bell, music, etc. can be used.

[0041] The switch 64 is operated by the user to switch the sound generating device 63 between conductive and non-conductive states. When the push button is pressed with the switch in the OFF state, the current generated by the vibration dynamo device 1 is stored in the charging circuit 62. Therefore, as long as the charging circuit 62 is charged, the sound generating device 63 can be made to sound by turning the switch 64 ON, even if the vibration dynamo device 1 is not in operation.

[0042] Next, the operation of the vibration dynamo device 1 of the present embodiment will be described with reference to Figures 1 and 4. The left and right directions in the following description correspond to the left and right directions on the paper.

[0043] The vibration dynamo device 1 holds the cylindrical member 10 and reciprocates in the extension direction of the cylindrical member 10, i.e., in the left-right direction along the arrow A2 in Fig. 1. This causes the magnet 40 to reciprocate in the first internal space 17 of the first cylindrical body 11 along the extension direction of the first cylindrical body 11.

[0044] Specifically, when the cylindrical member 10 is swung to the left as shown in FIG. 4(a), the magnet 40 moves to the right as shown in FIG. 4(b) and comes into contact with the sheet material 50 located on the right side. As a result, the sheet material 50 is bent to the right as the magnet 40 comes into contact with it. When the cylindrical member 10 is further swung to the right, the magnet 40 passes through the coil 30 as shown in FIG. 4(c), and the magnet 40 moves to the left as shown in FIG. 4(d), and comes into contact with the sheet material 50 located on the left side. As a result, the sheet material 50 is bent to the left as the magnet 40 comes into contact with it. When the cylindrical member 10 is further swung to the right, the magnet 40 passes through the coil 30 as shown in FIG. 4(e). In this manner, the operations of FIG. 4(b) to FIG. 4(e) are repeated.

[0045] As a result, the magnet 40 makes a reciprocating motion passing through the coil 30 arranged on the outer periphery of the cylindrical member 10, so that the magnetic flux lines generated from the magnet 40 are perpendicular to the coil 30, generating an induced current as an induced electromotive force. As the magnet 40 repeatedly goes in and out of the coil 30, an AC current is generated in the coil 30.

[0046] In the vibration dynamo device 1 of this embodiment, the flexible sheet material 50 repeatedly expands and contracts, thereby assisting the reciprocating motion of the magnet 40, allowing the magnet 40 to efficiently move back and forth within the coil 30, thereby improving power generation efficiency.

[0047] In addition, although the vibration dynamo device 1 of this embodiment has been described as having the tubular member 10 extending in the left-right direction and reciprocating in the left-right direction, the tubular member 10 may also be extended in the up-down direction and reciprocating in the up-down direction.

[0048] In addition, in this embodiment, the second tubular body 21 is provided on the outer side of the sheet material 50, but the second tubular body 21 does not have to be provided, and it is sufficient if the sheet material 50 is held at the outer end of the first tubular body 11 by a connecting device such as a screw.

[0049] In the second embodiment, a description will be given of another configuration example of the vibration dynamo device 1. Only the differences from the first embodiment will be described in detail below.

[0050] <Embodiment 2> In the vibration dynamo device 1 of the above-mentioned embodiment 1, the cylindrical member 10 extends in the left-right direction, but it may extend in the up-down direction. Furthermore, the cover portion 26 is formed of a rubber plate, but the cover portion 26A of this embodiment may have a repulsion magnet 26a. The other configurations may be the same as those of embodiment 1. In this embodiment, the magnet 40 will be called the main magnet in comparison with the repulsion magnet 26a.

[0051] 5, the cylindrical member 10 of this embodiment extends in the up-down direction in FIG. The cover portion 26A has a repulsion magnet 26a that magnetically repels the main magnet 40, and a covering portion 26b located outside the repulsion magnet 26a. The repulsion magnets 26a are provided in pairs at the upper end and the other end of the first cylindrical body 11. The repulsion magnet 26a is not particularly limited as long as it includes a magnet, and may be, for example, only a magnet, or may further include a yoke arranged at the end of the magnet.

[0052] The magnetic properties of the repulsion magnet 26a are preferably different from those of the main magnet 40. Specifically, the coercive force of the repulsion magnet 26a is smaller than that of the main magnet 40. When the main magnet 40 is a Nd-Fe-B sintered magnet, the repulsion magnet 26a is, for example, a Nd-Fe-B resin magnet, a Sm-Co resin magnet, a Nd-Fe-N resin magnet, or the like.

[0053] The magnetic properties of the Nd-Fe-B resin magnet used in the repulsion magnet 26a and the Nd-Fe-B sintered magnet used in the main magnet 40 are shown in Table 1 below. For reference, the magnetic properties of the anisotropic ferrite magnet are also shown.

[0054] [Table 1]

[0055] As shown in Table 1, the coercive force of the main magnet 40 is 868 kA / m or more, and the coercive force of the repulsion magnet 26a is 400 to 432 kA / m, and the coercive force of the main magnet 40 is greater than that of the repulsion magnet 26a. If the coercive force of the repulsion magnet 26a is too large, the longitudinal dimension of the first cylindrical body 11 must be increased. On the other hand, if the coercive force of the repulsion magnet 26a is small, the repulsion magnet 26a will be magnetized by the magnetic force of the main magnet 40. When an anisotropic ferrite magnet (reference magnet in Table 1) is used as the repulsive member, the coercive force of the anisotropic ferrite magnet is 230 to 275 kA / m, which is considerably smaller than the coercive force of the main magnet 40, so that the anisotropic ferrite magnet is magnetized by the magnetic force of the main magnet 40, and the main magnet 40 is attracted to the anisotropic ferrite magnet.

[0056] The repulsion magnet 26a arranged at the upper end of the cylindrical member 10 and the repulsion magnet 26a arranged at the lower end of the cylindrical member 10 are the same member. The polarity of the repulsion magnet 26a is arranged so as to magnetically repel the main magnet 40 in the first internal space 17. As a result, the main magnet 40 magnetically repels the repulsion magnet 26a, so that the reciprocating motion can be efficiently performed and the power generation efficiency can be improved.

[0057] In addition, since the vibration dynamo device 1A of this embodiment is disposed in the vertical direction, the main magnet 40 moves downward due to gravity. By providing the repulsion magnet 26a, the main magnet 40 is held in a floating state by the magnetic repulsion of the repulsion magnet 26a, so that the sheet material 50B can be prevented from becoming stretched.

[0058] The covering portion 26b covers the outer side of the repulsion magnet 26a. The covering portion 26b may be made of any non-magnetic material, such as a rubber plate similar to that in the first embodiment.

[0059] In addition, although the vibration dynamo device 1A of this embodiment has been described as having the tubular member 10 extending in the vertical direction and reciprocating in the left-right direction, the tubular member 10 may also be extended in the left-right direction and reciprocated in the left-right direction.

[0060] Furthermore, in the vibration dynamo device 1A of this embodiment, the repulsive magnets 26a are provided at the upper and lower ends, but it is sufficient to provide them at least at the lower end only.

[0061] In the first and second embodiments, the sheet material 50 has the shape shown in Fig. 2, but this is not limited to this. For example, as shown in Figs. 6 and 7, the central portions 52B and 52C of the sheet materials 50B and 50C may have different shapes.

[0062] 6, the shape of through-hole 56B provided between outer edge portion 51 and center portion 53B of sheet material 50B is generally triangular in plan view. In this modification, the thickness of rib portion 54B (the distance between through-holes 56B) can be increased.

[0063] 7, the shape of through hole 56C provided between outer edge portion 51 and center portion 53C of sheet material 50C is generally circular in plan view. Through hole 56C and hole portion 55 have generally the same shape and size. This allows sheet material 50C of this modified example to be easily manufactured.

[0064] <Embodiment 3> In the above-mentioned embodiments 1 and 2, the cylindrical member 10 of the vibration dynamo device 1, 1A is held and the magnet 40 is caused to move back and forth to generate electricity, but the magnet 40 may also be caused to move back and forth automatically to generate electricity by operating the switch mechanism 8 arranged on the outside of the cylindrical member 10.

[0065] In the following embodiment, the vibration dynamo device 1 of the first embodiment is used, but since it does not generate electricity by vibration, it is simply called a dynamo device. In this embodiment, the magnet 40 is called the first magnet in contrast to the second magnet 83 used in the switch mechanism 8.

[0066] 8 and 9, a dynamo device 7 with a switch mechanism according to a third embodiment includes a dynamo device 1 and a switch mechanism 8 disposed outside a tubular member 10 of the dynamo device 1. The switch mechanism 8 may be directly fixed to the tubular member 10, or may be provided in the vicinity of the tubular member 10 but different from the tubular member 10.

[0067] The switch mechanism 8 is, for example, a push button type. The switch mechanism 8 includes a housing 80, a moving part 82 that is provided so as to be movable within the housing 80, and a second magnet 83 that is provided at the tip of the moving part 82. The switch mechanism 8 is disposed at a position where the second magnet 83 acts on the first magnet 40. In other words, the second magnet 83 is disposed at a position where it is attracted to or repelled by the first magnet 40.

[0068] The housing 80 is formed of a non-magnetic material similar to that of the cylindrical member 10. The housing 80 is open at one end in the width direction (the right side on the paper) and closed at the other end in the width direction (the left side on the paper). A spring 81 is disposed at the other end in the width direction. The spring 81 is biased toward the inside of the housing 80 (the right side).

[0069] The moving part 82 is rod-shaped and made of the same non-magnetic material as the housing 80. The moving part 82 moves left and right inside the housing 80. Specifically, when the moving part 82 is pushed to the left, the left end of the moving part 82 hits the spring 81, and is pushed back to the right by the elasticity of the spring 81. A second magnet 83 is attached to the left end of the moving part 82.

[0070] The shape of the second magnet 83 is not limited, but may be, for example, a cylinder or a sphere. The term "sphere" and "cylinder" refer to a shape that is spherical or cylindrical, and includes a hollow shape. The term "cylinder" includes a cylindrical body, a rectangular column, a disk shape, and the like, and is a cylinder in this embodiment. The second magnet 83 is a permanent magnet, like the first magnet 40. The material of the second magnet 83 is not particularly limited, but it is preferable to use a Nd-Fe-B sintered magnet, like the first magnet 40. The second magnet 83 is magnetized in the reciprocating direction (axial direction). The first magnet 40 and the second magnet 83 are arranged so that the same poles face each other.

[0071] The second magnet 83 acts on the first magnet 40 of the dynamo device 1 and is displaceable between a first position (right-side position: FIG. 9(a)) and a second position (left-side position: FIG. 9(c)). Specifically, by pushing the moving part 82 to the left, the second magnet 83 moves from the right-side position to the left-side position and hits the spring 81, and is pushed back to the original position by the biasing force of the spring 81.

[0072] Next, the operation of the switch mechanism-equipped dynamo device 7 of this embodiment will be described with reference to FIG.

[0073] As shown in Fig. 9(a), when the moving part 82 in the first position is pushed to the left, the S pole of the first magnet 40 and the S pole of the second magnet 83 repel each other, and the first magnet 40 moves further to the left. As shown in Fig. 9(b), the first magnet 40 comes into contact with the sheet material 50 located on the left side, and the sheet material 50 bends to the left. When the moving part 82 is further pushed to the left in succession to the second position, the first magnet 40 passes through the coil 30 and moves to the right as shown in Fig. 9(c).

[0074] As a result, the first magnet 40 repels the second magnet 83 of the switch mechanism 8, making it possible to move the first magnet 40 at high speed simply by operating the switch mechanism 8, thereby improving power generation efficiency without having to vibrate the dynamo device 1 by shaking it with your hand, for example.

[0075] In the third embodiment, one dynamo device 1 is provided for one switch mechanism 8. However, as shown in FIG. 10, two dynamo devices 1 may be provided for one switch mechanism 8. In this case, the two dynamo devices 1 only need to be provided in a position where the second magnet 83 of the switch mechanism 8 magnetically acts on the first magnet 40. As a result, since two dynamo devices 1 are provided, it is possible to generate more power than the dynamo device 7 with switch mechanism of the third embodiment. The number of dynamo devices 1 is not limited to two, and multiple dynamo devices 1 may be provided.

[0076] Also, although the switch mechanism 8 in the third embodiment has been described as being of a push button type, it may be of various types, such as a pull type or a lever type. Furthermore, the switch mechanism 8 is only required to be provided with at least the second magnet 83 acting on the first magnet 40, and the configuration of the switch mechanism 8 is not limited to the above embodiment. Also, although the first magnet 40 has been described as moving due to the repulsion of the second magnet 83, it may be movable due to attraction.

[0077] Furthermore, in the dynamo device 7, 7A with a switch mechanism of the third embodiment, the dynamo device 1 used in the first embodiment may be replaced by the dynamo device 1 used in the second embodiment. Even if the dynamo device 1 used in the first embodiment is used, the cover 26 may be replaced by a repulsive magnet 26a. EXAMPLES

[0078] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these.

[0079] In this example, the effect of using a flexible sheet material was examined.

[0080] (Example of the present invention) The vibration dynamo device of the present invention was the same as that of the first embodiment shown in Figs. 1 to 3. Specifically, the cylindrical member 10 had an outer diameter of 20 mm, an inner diameter of 11 mm, and a length of 32 mm. The coil 30 was a solenoid coil, and the outer diameter of the winding constituting the coil 30 was 0.1 mm, the number of turns was 2660 T, and the length was 10 mm. The magnet 40 was a cylinder, with a diameter of 10 mm and a thickness (length along the extension direction) of 14 mm. The sheet material 50 was silicone rubber, with a durometer A hardness of 50° and a thickness of 0.4 mm.

[0081] (Comparative Example) The vibration dynamo device of the comparative example was similar to the vibration dynamo device of the present invention, but differed in the configuration of the sheet material. Specifically, the vibration dynamo device of the comparative example was made by stacking four sheets of the sheet material used in the vibration dynamo device of the present invention, making the overall thickness of the sheet material 1.6 mm, and not providing the second internal space 25. By stacking four sheets of the sheet material and not providing the second internal space 25, the sheet material was prevented from being flexed and deformed.

[0082] (Evaluation method) The output voltage was evaluated for the vibration dynamo devices of the present invention and the comparative example. The vibration dynamo devices of the present invention and the comparative example were run back and forth three times per second, and the output voltage was measured with a digital tester connected to the coil. Note that before measuring the output voltage, it was rectified with a diode bridge. The results are shown in Table 2 below.

[0083] [Table 2]

[0084] (Evaluation Results) As shown in Table 2, the example of the present invention, in which the sheet material was 0.4 mm thick and capable of flexural deformation, had an output voltage of 1.5 to 1.6 V. In contrast, the comparative example, in which the sheet material was 1.6 mm thick and not capable of flexural deformation, had an output voltage of 1.0 to 1.1 V. Thus, by using a sheet material capable of flexural deformation, the output voltage could be significantly improved.

[0085] Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0086] 1,1A vibration dynamo device (dynamo device), 7,7A dynamo device with switch mechanism, 8 switch mechanism, 10 tubular member, 11 first tubular body, 12 first outer diameter side wall surface, 13 first inner diameter side wall surface, 14 first region, 15 second region, 16 pin, 17 first internal space, 18 air hole, 21 second tubular body, 22 second outer diameter side wall surface, 23 second inner diameter side wall surface, 24 pin hole portion, 25 second internal space, 26,26A lid portion, 26a repulsion magnet, 26b covering portion, 30 coil, 40 magnet (main magnet, first magnet), 50,50B,50C sheet material, 51 outer edge portion (ring portion), 52,52B,52C central portion, 53,53B,53C Center portion, 54, 54B, 54C rib portion, 55 hole portion, 56, 56B, 56C through holes, 61 rectifier circuit, 62 charging circuit, 63 sound generating device, 64 switch, 80 housing, 81 spring, 82 moving portion, 83 second magnet, 100 chime device.

Claims

1. A cylindrical member including a first cylindrical body made of a non-magnetic material and open at both ends, the lengths of both ends of which are defined, and two second cylindrical bodies arranged on one end side and the other end side of the first cylindrical body, respectively; A coil disposed on an outer periphery of the first cylindrical body; A magnet is disposed in an internal space of the first cylindrical body and is capable of reciprocating along an extension direction of the cylindrical member; A first sheet material fixed to one end of the first cylindrical body in an extending direction; a second sheet material fixed to the other end of the first cylindrical body in the extending direction, the internal space formed by the cylindrical member includes a first internal space in which the magnet is located and which is formed by the first cylindrical body, a second internal space which is located on one end side of the first internal space, which is formed by one side of the second cylindrical body, and which is located outside the first sheet material, and a third internal space which is located on the other end side of the first internal space, which is formed by the other side of the second cylindrical body, and which is located outside the second sheet material, the first sheet material includes a first outer edge portion fixed to one end of the first cylindrical body in an extension direction, and a first central portion facing the first internal space and the second internal space, the second sheet material includes a second outer edge portion fixed to the other end of the first cylindrical body in the extension direction and a second central portion facing the first internal space and the third internal space, A vibration dynamo device, wherein the first central portion and the second central portion are elastically flexibly deformable along the extension direction of the tubular member.

2. an inner diameter side wall surface of the cylindrical member that forms the first internal space includes a first region having a first inner diameter dimension and a second region having a second inner diameter dimension larger than the first inner diameter dimension and positioned so as to sandwich the first region; 2. The vibration dynamo apparatus of claim 1, wherein the first sheet material and the second sheet material are each fixed to the second region.

3. 3. The vibration dynamo apparatus according to claim 1, wherein the second cylindrical body is provided with a lid portion that closes an outer end portion thereof.

4. the first sheet material includes a first ring portion constituting the first outer edge portion, and a first center portion and a first rib portion constituting the first central portion; the first central portion is centrally located in the first ring portion and spaced apart from the first ring portion; The first rib portion is provided in plurality and connects the first ring portion and the first center portion, the second sheet material includes a second ring portion constituting the second outer edge portion, and a second center portion and a second rib portion constituting the second central portion; the second central portion is centrally located in the second ring portion and spaced apart from the second ring portion; The vibration dynamo device according to any one of claims 1 to 3, wherein the second rib portion is provided in plurality and connects the second ring portion and the second central portion.

5. 5. The vibration dynamo device according to claim 1, wherein the magnet is a cylindrical body.

6. 4. The vibration dynamo device according to claim 3, wherein the cover portion has a repulsive magnet that magnetically repels the magnet.

7. A cylindrical member including a first cylindrical body made of a non-magnetic material and open at both ends, the lengths of both ends of which are defined, and two second cylindrical bodies respectively disposed on one end side and the other end side of the first cylindrical body; A coil disposed on an outer periphery of the first cylindrical body; A first magnet is disposed in an internal space of the first cylindrical body and is capable of reciprocating along an extension direction of the cylindrical member; A first sheet material fixed to one end of the first cylindrical body in an extending direction; a second sheet material fixed to the other end of the first cylindrical body in the extending direction, the internal space formed by the cylindrical member includes a first internal space in which the first magnet is located and which is formed by the first cylindrical body, a second internal space which is located on one end side of the first internal space, which is formed by one side of the second cylindrical body, and which is located outside the first sheet material, and a third internal space which is located on the other end side of the first internal space, which is formed by the other side of the second cylindrical body, and which is located outside the second sheet material, the first sheet material includes a first outer edge portion fixed to one end of the first cylindrical body in an extension direction, and a first central portion facing the first internal space and the second internal space, the second sheet material includes a second outer edge portion fixed to the other end of the first cylindrical body in the extension direction and a second central portion facing the first internal space and the third internal space, a dynamo device in which the first central portion and the second central portion are elastically deformable along an extension direction of the cylindrical member; a switch mechanism including a second magnet that acts on the first magnet and is displaceable between a first position and a second position, the switch mechanism being disposed outside the cylindrical member; A dynamo device with a switch mechanism, in which the first magnet moves in the extension direction of the cylindrical member as the second magnet is displaced from the first position to the second position.

8. 8. The dynamo device with switch mechanism according to claim 7, wherein a plurality of the dynamo devices are provided at positions where the second magnet of the switch mechanism acts on the first magnet.

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