JP2012080604A - Vibration power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration power generator having high power generation efficiency by extending a moving distance of a permanent magnet moving in a cylindrical case.SOLUTION: A vibration power generator comprises: a movable element movably disposed along an inner wall of a cylindrical member and having a plurality of permanent magnets fixed by a fastening member; a coil provided in a moving direction of the movable element along a wall of the cylindrical member; a cylindrical buffer member disposed at both ends of the cylindrical member, restricting movement of the movable element, and having a through-hole which enables intrusion of the fastening member in collision with the movable element; a deformation restricting part which restricts deformation of the through-hole in collision with the movable element; and a gap part which enables accommodating a deformed portion of the buffer member caused due to collision with the movable element.

Description

  The present invention relates to a vibration generator that generates electric power when a magnetic flux of a moving magnet crosses a fixed coil.

  2. Description of the Related Art Conventionally, there is a vibration power generator that generates power when a magnetic flux crosses a coil wound along a cylindrical case. For example, Patent Document 1 describes a vibration generator in which a plurality of permanent magnets fixed by a fastening member are arranged to be movable inside a cylindrical case, and a coil is arranged on the outer periphery of the cylindrical case. ing. The plurality of permanent magnets are configured to be fixed from both sides in the moving direction by fastening members. Furthermore, a buffer member is provided at both ends of the cylindrical case, corresponding to the moving direction of the permanent magnet, which prevents the fastening member that fixes the permanent magnet from being damaged by collision.

JP 2006-296114 A

  In the vibration power generator described in Patent Document 1, the plurality of permanent magnets are movable while being fixed by fastening members from both sides in the moving direction. Moreover, the buffer member is provided in the both ends of the cylindrical case. Since this vibration generator includes a fastening member and a buffer member, the movable distance of the permanent magnet in the cylindrical case with respect to the entire length of the cylindrical case is shortened. When the moving distance of the permanent magnet is short, there is a problem that the distance that the magnetic flux traverses the coil arranged on the outer periphery of the cylindrical case is short, and the power generation efficiency is poor.

  The present invention has been made in order to solve the above-described problems, and an object thereof is to provide a vibration generator having high power generation efficiency by increasing the moving distance of a permanent magnet that moves in a cylindrical case. .

  In order to achieve this object, the vibration generator according to claim 1 is arranged such that a cylindrical guide member, a coil provided along the guide member, a plurality of permanent magnets, and the same poles face each other. A fastening member having a projecting portion for fixing the plurality of permanent magnets from the end surface, a mover movable in a predetermined direction along the wall of the guide member, and disposed at both ends of the guide member, A cylindrical buffer member that restricts movement of the mover and has a through-hole through which the projecting portion can enter when the mover collides, and the through-hole when the mover collides. A deformation restricting portion in which the length in the predetermined direction is shorter than the length in the predetermined direction of the buffer member, and a gap portion capable of accommodating a deformed portion of the buffer member caused by the collision of the mover. It is characterized by providing.

  Further, in the vibration generator according to claim 2, support members for supporting the buffer member are provided at both ends in the moving direction of the guide member, the deformation restricting portion is provided on the support member, and The buffer member is provided along the through hole, restricts deformation of the buffer member into the through hole, and the buffer member corresponds to an axis in the movement direction of the mover. Thus, the positioning is characterized.

  The vibration generator according to claim 3 is characterized in that the length of the protruding portion protruding from the permanent magnet in the moving direction is shorter than the length of the buffer member in the moving direction.

  The vibration generator according to claim 4, wherein the gap portion is formed adjacent to a surface different from the surface having the through hole of the buffer member, and is generated when the mover collides. The deformed portion is accommodated.

  Further, in the vibration generator according to claim 5, the guide member is a cylindrical member having a coil formed around it, and the gap is provided between the cylindrical member and the buffer member, A portion of the buffer member that deforms in the direction of the cylindrical member that is generated when the movable element collides is accommodated.

  The vibration generator according to claim 6, wherein the gap is provided between the buffer member and an inner wall of the guide member, and the guide member of the buffer member is generated when the movable element collides. A deformed portion in the direction of the inner wall is accommodated.

  The vibration generator according to claim 7, wherein the gap is provided between the buffer member and the support member, and is directed toward the support member of the buffer member generated when the movable element collides. The deformed portion is accommodated.

  The power generating mover storage device according to claim 8 includes a mover having a plurality of permanent magnets and a projecting portion for fixing the plurality of permanent magnets having the same poles facing each other from an end surface. A power generator mover storage device used in a vibration power generator that generates power by causing the magnetic flux of the permanent magnet to cross a coil, and a cylindrical guide member that moves the mover in a predetermined direction, and a guide member A coil that is disposed along both ends of the guide member, restricts the movement of the mover, and has a through-hole through which the protruding portion can enter when the mover collides. When the buffer member and the mover collide, the deformation of the through hole is restricted, and the length of the predetermined direction is shorter than the length of the buffer member in the predetermined direction. Accommodates deformed parts of the cushioning member caused by collision Characterized in that it comprises the ability void portion.

  In the vibration generator according to the first aspect, when the mover collides with the buffer member, the projecting portion of the mover enters the through hole of the cylindrical buffer member. With this configuration, the protruding portion of the fastening member that fixes the permanent magnet enters the through hole of the buffer member at the end of the guide member, so the movable distance of the mover is increased by the length of the protruding portion. can do. Therefore, the mover can be moved so that the magnetic flux of the permanent magnet sufficiently crosses the coil provided along the guide member, and power can be generated efficiently.

  Moreover, the deformation | transformation control part and the space | gap part which accommodates the deformation | transformation part of a buffer member are provided. Therefore, when the mover collides with the buffer member, the mover is not fastened to the buffer member by the deformation restricting portion. In addition, since the length of the deformation restricting portion is formed to be shorter than the length of the buffer member, even if the mover collides with the buffer member, there is no possibility that the mover collides with the deformation restricting portion. It does not affect the kinetic energy of the mover. Therefore, the moving speed of the mover does not decrease, and power can be generated efficiently without reducing the kinetic energy of the mover.

  Further, in the vibration power generator according to claim 2, since the shaft of the through hole of the buffer member is positioned by the deformation restricting portion corresponding to the axis in the moving direction of the mover, the protruding portion of the fastening member Does not collide with the end face of the buffer member. Therefore, power can be generated efficiently without reducing the moving distance of the mover.

  In the vibration generator according to claim 3, the length of the protruding portion of the fastening member protruding from the permanent magnet is shorter than the length of the buffer member. Therefore, when the mover collides with the buffer member, the projecting portion does not collide with other members and the like, the kinetic energy of the mover is not lowered, and the mover is not damaged. Therefore, when the mover moves, the movement is not hindered by other members, and power can be generated efficiently.

  According to a fourth aspect of the present invention, the space that can accommodate the deformed portion is provided adjacent to a surface different from the surface of the through hole of the buffer member. For this reason, even when the mover collides with the buffer member, the movement of the mover is not hindered by the deformation of the buffer member, and the kinetic energy of the mover does not decrease. Therefore, power generation can be performed efficiently.

  Moreover, in the vibration generator according to claim 5, a gap that can accommodate the deformed portion is provided between the tubular member and the buffer member. For this reason, even when the mover collides with the buffer member, the movement of the mover is not hindered by the deformation of the buffer member, and the kinetic energy of the mover does not decrease. Therefore, power generation can be performed efficiently.

  Further, in the vibration generator according to claim 6, a gap that can accommodate the deformed portion is provided between the buffer member and the inner wall of the cylindrical member. For this reason, even when the mover collides with the buffer member, the movement of the mover is not hindered by the deformation of the buffer member, and the kinetic energy of the mover does not decrease. Therefore, power generation can be performed efficiently.

  Moreover, in the vibration generator according to claim 7, a gap that can accommodate the deformed portion is provided between the buffer member and the support member. For this reason, even when the mover collides with the buffer member, the movement of the mover is not hindered by the deformation of the buffer member, and the kinetic energy of the mover does not decrease. Therefore, power generation can be performed efficiently.

  In the power generation mover storage device according to the eighth aspect, when the mover collides with the buffer member, the protruding portion of the fastening member enters the through hole of the cylindrical buffer member. With this configuration, the projecting portion of the fastening member that fixes the permanent magnet enters the through hole of the buffer member at the end of the guide member, so that the movable distance of the mover can be increased. Therefore, the mover can be moved so that the magnetic flux of the permanent magnet sufficiently crosses the coil provided along the guide member, and power can be generated efficiently.

  Moreover, the deformation | transformation control part and the space | gap part which accommodates the deformation | transformation part of a buffer member are provided. Therefore, when the mover collides with the buffer member, the mover is not fastened to the buffer member by the deformation restricting portion. In addition, since the length of the deformation restricting portion is formed to be shorter than the length of the buffer member, even if the mover collides with the buffer member, there is no possibility that the mover collides with the deformation restricting portion. It does not affect the kinetic energy of the mover. Therefore, the moving speed of the mover does not decrease, and power can be generated efficiently without reducing the kinetic energy of the mover.

It is sectional drawing which shows the outline of the vibration generator 1 in this Embodiment 1. FIG. It is AA sectional drawing of the vibration generator 1 shown in FIG. It is sectional drawing which shows the outline of the vibration generator 100 in this Embodiment 2. FIG. It is sectional drawing which shows the outline of the vibration generator 200 in this Embodiment 3. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)

  FIG. 1A is a schematic vertical cross-sectional view illustrating the configuration of the vibration power generator 1 according to the first embodiment. FIG. 1B is a schematic diagram illustrating a cross section taken along line AA of the vibration power generator 1 of FIG. 1A. In the first embodiment, the following will be described with the left-right direction defined as shown in FIG. 1A.

  The vibration generator 1 shown in FIG. 1A has a substantially cylindrical structure, and the outermost shell is configured to be covered with a standardized dry battery-shaped casing (not shown). The housing includes a positive electrode terminal and a negative electrode terminal, and each of the terminals is electrically connected to the vibration generator 1 inside. The vibration generator 1 provided in the housing includes a cylindrical guide member 2 formed by opening both ends in the left-right direction as shown in FIG. The guide member 2 is made of a magnetic material and a conductive material, and for example, iron is used. In FIG. 1A, the center of the guide member 2 is shown as a central axis 2X.

  In the guide member 2, the power generation unit 10 is fixedly provided along the inner periphery thereof. The power generation unit 10 includes a bobbin case 11 and a coil 12. The bobbin case 11 is a cylindrical member made of a resin material, and the length in the left-right direction is shorter than the length in the left-right direction of the guide member 2. On the outer periphery of the bobbin case 11, a plurality of flanges 11 </ b> A are formed integrally with the bobbin case 11 at both ends and at predetermined intervals between both ends in the left-right direction, and are partitioned into a plurality of regions. In the region defined by the flange 11 </ b> A of the bobbin case 11, the enamel wire is wound so as to be opposite to each other in the adjacent region, thereby forming the coil 12. The bobbin case 11 of the first embodiment is an example of the cylindrical member of the present invention.

  In the guide member 2, a mover 20 is provided inside the cylinder of the bobbin case 11 so as to be movable in the left-right direction. The mover 20 includes two permanent magnets 21 and a fastening member 22. Each permanent magnet 21 is magnetized in the left-right direction, and has a cylindrical shape with a hole 21A penetrating in the left-right direction at the center. The outer diameter of the permanent magnet 21 is slightly smaller than the inner diameter of the bobbin case 11. The two permanent magnets 21 are fixed by the fastening member 22 to form the movable element 20.

  The fastening member 22 includes a rod-shaped core portion 22A and two fixing portions 22B. The outer diameter of the core portion 22A is smaller than the diameter of the hole 21A of the permanent magnet 21. The core portion 22A is inserted into the holes 21A of the two permanent magnets 21, the fixing portions 22B are provided at both left and right ends thereof, and the fixing portion 22B and the end portions of the core portion 22A are screw mechanisms. Are fitted and fixed. Accordingly, the two permanent magnets 21 of the mover 20 are fixed by the fixing portions 22B provided at the left end and the right end thereof.

  In particular, in the first embodiment, the two permanent magnets 21 are arranged so that the polarities of adjacent magnets face the same polarity. The magnetic flux density is high in the region where the two permanent magnets 21 face each other. On the other hand, since the same poles are arranged to face each other, an axial deviation in which the central axes of the two permanent magnets 21 are liable to occur is likely to occur. Therefore, the axial displacement of the two permanent magnets 21 can be prevented by fixing the permanent magnet 21 by the core portion 22A and the fixing portion 22B. Thereby, since no step is generated between the two permanent magnets 21, the excess air resistance can be reduced, and the mover 20 having a high magnetic flux density can be moved along the coil 12. Power generation can be performed efficiently. In addition, the said fixing | fixed part 22B of this Embodiment 1 is an example of the protrusion part of this invention.

  It is desirable that the length of the permanent magnet 21 in the left-right direction and the length of the coil 12 in the left-right direction are related to each other. Specifically, in the first embodiment, the length in the left-right direction of each permanent magnet 21 is equal to the length in the left-right direction of the coil 12 formed in a region sandwiched between the two flanges 11A, and The dimensional relationship is approximately equal to the sum of the lengths of the flanges 11A in the left-right direction. With this configuration, as will be described later, when the vibration generator 1 is used, when the magnetic flux of the mover 20 crosses the coil 12 in each region, the polarity of the voltage generated in the coil 12 in the adjacent region Therefore, efficient power generation is performed.

  At both ends of the guide member 2, movement restricting portions 30 are provided adjacent to the bobbin case 11. The movement restricting portion 30 includes a buffer member 31 and a support portion 32. The buffer member 31 has a cylindrical shape in which a through hole 31A is formed at the center. The buffer member 31 is made of rubber having a Young's modulus of 100 MPa or less, and for example, silicone rubber or the like is used. The buffer member 31 is provided in the left-right direction adjacent to the flange 11A of the bobbin case 11 and the support portion 32 as will be described later, and deformation in the left-right direction is restricted. The buffer member 31 has an outer diameter smaller than the inner diameter of the guide member 2, and the diameter of the through hole 4 </ b> A is slightly larger than the outer diameter of the fixing portion 22 </ b> B in the fastening member 22 of the mover 20. . Further, the length in the left-right direction of the buffer member 31 is longer than the length in the left-right direction of the fixing portion 22 </ b> B of the fastening member 22 of the mover 20. Thus, the movable element 20 that moves in the movable area 2A can reciprocate in the movable area 2A without protruding from the buffer member 31. Thereby, without colliding with members, such as the support part 32 mentioned later, the movement distance of the said needle | mover 20 can be taken long, and electric power generation can be performed efficiently.

  Supporting portions 32 are provided adjacent to the buffer member 31 at the right end and the left end of the guide member 2. The support portion 32 is a disk made of a metal material and having a shape and size matching the openings at both ends of the guide member 2. At the center of the support portion 32, a deformation restricting portion 32A that is convex toward the moving region 2A and is thin and cylindrical is formed.

  The deformation restricting portion 32A is formed by performing a process of causing a part of the metal support portion 32 to protrude. The cylindrical deformation restricting portion 32A has an outer diameter substantially the same as the diameter of the through hole 31A of the buffer member 31, and is provided along the diameter of the through hole 31A. The deformation restricting portion 32 </ b> A is a member that restricts deformation of the through hole 31 </ b> A that occurs when the mover 20 collides with the buffer member 31 as described later. The diameter of the deformation restricting portion 32A is substantially the same as the diameter of the through hole 31A of the buffer member 31, and the length in the left-right direction is shorter than the length in the left-right direction of the buffer member 31. If the deformation restricting member 32A has a length in the left-right direction, a member that restricts deformation is provided for the through hole 31A of the buffer member 31 that deforms when the movable element 20 collides. Compared with the case where it is not possible, the area | region where the said needle | mover 20 is tightened by the said through-hole 31A of the said buffer member 31 deform | transforming can be decreased. Further, because the deformation restricting portion 32A is shorter than the buffer member 31, the mover 20 does not come into contact with the deformation restricting member 32A when colliding with the buffer member 31, and the mover 20 The risk of damage is reduced.

  The buffer member 31 is positioned and arranged in the guide member 2 by the deformation restricting portion 32A. As described above, the deformation restricting portion 32A is formed at the center of the support portion 32 with a diameter substantially the same as the diameter of the through hole 31A of the buffer member 31. The buffer member 31 is arranged by the deformation restricting portion 32 </ b> A so that the center axis 31 </ b> X coincides with the center axis 2 </ b> X of the guide member 2.

  When the buffer member 31 formed smaller than the diameter of the inner wall of the guide member 2 is arranged so that the center thereof coincides with the central axis 2X of the guide member 2, the buffer member 31 is disposed inside the guide member 2. A space region 6 exists between the outer diameter of the member 31 and the inner wall of the guide member 2. That is, in the guide member 2, the space region 6 is surrounded by the inner wall of the guide member 2, the end of the bobbin case 11, the outer diameter of the buffer member 31, and the support portion 32. It is formed. The space region 6 accommodates the volume of a deformed portion in which the buffer member 31 is deformed when the movable element 20 collides with the buffer member 31 when the vibration power generator 1 is used as will be described later. It is space. In addition, the space area | region 6 in this Embodiment 1 is an example of the space | gap part of this invention.

  A wiring member 40 is connected to the coil 12 of the power generation unit 10 at the right end and the left end, and is electrically connected to the circuit unit 41 housed in the casing (not shown). The circuit unit 41 includes a rectification unit 42 that rectifies the power generated by the power generation unit 10 and a power storage unit 43 that stores the power rectified by the rectification unit 42. For example, a bridge diode is used for the rectifier 42. The power storage unit 42 is electrically connected to the positive terminal and the negative terminal of the casing.

  Then, the usage method of the said vibration generator 1 is demonstrated. The vibration generator 1 is used in a state in which the dry cell-shaped casing in which the vibration generator 1 is enclosed is mounted in a battery box such as a remote controller. The vibration generator 1 is swung by a user so that the mover 20 of the vibration generator 1 is reciprocated in the left-right direction. The external force applied to the vibration generator 1 is transmitted to the mover 20 to become kinetic energy, and the mover 20 reciprocates in the left-right direction in the moving region 2A of the guide member 2.

  When the mover 20 moves in the left-right direction in the moving area 2 </ b> A, the magnetic flux of the permanent magnet 21 crosses the coil 12. At this time, an induced current is generated in the coil 12. When the mover 20 reciprocates in the moving area 2A, an alternating current is generated in the coil 12. The current generated in the coil 12 is transmitted to the rectifying unit 41 via the wiring member 40 and stored as electric power in the power storage unit 42.

  In the moving area 2A, the two permanent magnets 21 of the mover 20 slide on the bobbin case 11 in which the coil 12 is formed in the area. Power generation is performed as long as the magnetic flux of at least one magnet crosses the coil. In the first embodiment, power generation is performed when the magnetic flux of the two permanent magnets 21 crosses the coil 12.

  When the movable element 20 collides with the buffer member 31, the permanent magnet 21 comes into contact with the buffer member 31, and the fixing portion 22B of the fastening member 22 enters the through hole 31A. When the mover 20 collides with the buffer member 31, the buffer member 31 is deformed by applying a force from the permanent magnet 21. Due to the collision of the mover 20, the cylindrical buffer member 31 is shortened in the left-right direction, and tends to be deformed to spread evenly on the inner side of the through hole 31 </ b> A and the outer side of the outer periphery. When the mover collides with the buffer member, the buffer member is deformed by the collision, and the mover may be tightened depending on the shape of the mover. As a result, the moving speed of the mover decreases, and the kinetic energy of the mover may decrease.

  Therefore, in the vibration power generator 1 of the first embodiment, the buffer member 3 has a cylindrical shape having the through hole 31A, and the deformation restricting portion 32A is provided along the through hole 31A. Accordingly, even when the movable element 20 collides with the buffer member 31, the deformation of the through hole 31A is restricted. Furthermore, the space area 6 that accommodates the deformed portion is provided outside the outer periphery of the buffer member 31. Thereby, the deformation of the buffer member 31 caused by the collision of the movable element 20 is accommodated in the space region 6. With these configurations, even when the movable member 20 that moves along the wall of the guide member 2 collides with the buffer member 31, even when the buffer member 31 is deformed, the deformation restricting portion 32A. Therefore, the mover 20 is not tightened. Accordingly, the moving speed of the mover 20 does not decrease, and the kinetic energy of the mover 20 does not decrease, so that power can be generated efficiently.

  The deformation restricting portion 32A restricts deformation of the through hole 31A of the buffer member 31, and the through hole 31A corresponds to the movable element 20 that moves along the guide member 2. The arrangement of the buffer member 31 is determined. The mover 20 collides with the buffer member 31 positioned by the deformation restricting portion 32A. When the movable element 20 abuts on the buffer member 31 disposed corresponding to the moving direction, the fixed portion 22B is accommodated in the through hole 31A positioned by the deformation restricting portion 32A. The movable element 20 that collides with the buffer member 31 can abut against the buffer member 31 evenly about the axis in the moving direction. In addition, since the buffer member 31 is evenly arranged corresponding to the axis in the moving direction of the mover 20, the deformed portion is uniformly stored in the space region 6 outside the outer periphery of the buffer member 31. be able to.

  Further, when the mover 20 moves in the guide member 2, the fixing portion 22 </ b> B of the fastening member 22 is inserted into the through hole 31 </ b> A of the buffer member 31, so that the inside of the guide member 2 is The moving distance of the mover 20 can be increased, and efficient power generation can be performed. Further, the deformation restricting portion 32 </ b> A is provided along the inner periphery of the through hole 31 </ b> A of the buffer member 31. With the configuration in which the deformation restricting portion 32A is provided along the buffer member 4, the buffer member 31 is not deformed inside the through hole 31A even if the movable element 20 collides with the buffer member 31. . Therefore, the buffer member 31 does not tighten the fixing portion 22B of the fastening member 22 of the movable element 20 due to deformation, and the kinetic energy generated by the movable element 20 colliding with the buffer member 31 is prevented. Decline can be prevented.

  In the first embodiment, when the movable element 20 collides with the buffer member 31, the buffer member 31 is deformed so that the left-right direction is shortened. At that time, the movable element 20 needs to be configured such that the deformation restricting portion 32A does not come into contact therewith. Further, the fixing portion 22B of the fastening member 22 should be configured not to collide with the support portion 32. Therefore, in the vibration power generator 1 of the first embodiment, the length of the deformation restricting portion 32A in the left-right direction is such that the force applied to the deformation restricting portion 32A when the movable element 20 collides with the Young of the buffer member 31. Determined from the rate.

The vibration generator 1 described in the first embodiment has a configuration in which the space region 6 is surrounded by the guide member 2, the bobbin case 11, the support portion 32, and the buffer member 31. However, the space region only needs to have a configuration that does not hinder the kinetic energy of the mover moving in the guide member when the buffer member is deformed, and is formed in a region different from that of the vibration power generator 1 of the first embodiment. It may be a configuration. The vibration generators in the second and third embodiments are different from the vibration generator 1 in the first embodiment in the spatial region formed in the guide member. Note that the configurations of the vibration generators of the second and third embodiments are different from the vibration generator 1 of the first embodiment only in the position where the space region is provided. The following will be described.
(Embodiment 2)

  As shown in FIG. 2, in the vibration power generator 100 according to the second embodiment, the bobbin case 111 is provided in the guide member 2, and the cylindrical shape having the through holes 31 </ b> A at both ends in the left-right direction of the bobbin case 111. A buffer member 31 is provided. In the flanges 111 </ b> A at both the left and right ends of the bobbin case 111, a notch that is inclined with respect to the surface of the buffer member 31 is formed so that a space is formed between the inner wall of the guide member 2. In the vibration power generator 100 of the second embodiment, a region surrounded by the notch of the bobbin case 111, the inner wall of the guide member 2, and the cylindrical buffer member 31 is defined as a space region 106. To do. Further, a deformation restricting portion 32 </ b> A that restricts deformation of the buffer member 31 inward is provided inside the through hole 31 </ b> A of the buffer member 31.

In the guide member 2, a mover 20 composed of a permanent magnet 21 and a fastening member 22 is provided so as to be movable in the left-right direction. The mover 20 moves in the left-right direction while colliding with the buffer member 31. Move back and forth. When the mover 20 collides with the buffer member 31, the deformation restricting portion 32A restricts the buffer member 31 from being deformed inside the through hole 31A, and the notch formed in the bobbin case 111 is It is deformed in the direction of the space area 106. A deformed portion of the buffer member 31 caused by the collision of the mover 20 is accommodated in the space region 106. As a result, even when the buffer member 31 is deformed, the deformation restricting portion 32A is not deformed to the inside of the through hole 31A, so that the fastening member 22 of the mover 20 is not tightened. The movement of the mover 20 is not hindered and the kinetic energy is not reduced.
(Embodiment 3)

  As shown in FIG. 3, in the vibration power generator 200 according to the third embodiment, the bobbin case 11 is provided in the guide member 2, and the cylindrical shape has the through holes 31 </ b> A at both ends in the left-right direction of the bobbin case 11. A buffer member 31 is provided. The guide member 2 is provided with a support portion 232 on the end side in the left-right direction with respect to the buffer member 31. The support portion 232 is formed with a concave portion 232B that is a circular groove. In the vibration power generator 200 of the third embodiment, a space formed by the recess 232 </ b> B and the buffer member 31 is defined as a space region 206. In addition, in a part of the support portion 232, a deformation restriction portion 232 </ b> A that restricts deformation of the buffer member 31 inward is provided inside the through hole 31 </ b> A of the buffer member 31.

  In the guide member 2, a mover 20 composed of a permanent magnet 21 and a fastening member 22 is provided so as to be movable in the left-right direction. The mover 20 moves in the left-right direction while colliding with the buffer member 31. Move back and forth. When the movable element 20 collides with the buffer member 31, the deformation restricting portion 232 </ b> A restricts the buffer member 31 from being deformed to the inside of the through hole 31 </ b> A, and in the recess 232 </ b> B formed in the support portion 232. It is deformed in the direction of the space area 206. A deformed portion of the buffer member 31 caused by the collision of the mover 20 is accommodated in the space region 206. In the third embodiment, since the space region 206 is provided in the support portion 232, the deformation direction of the buffer member 31 and the collision direction of the mover 20 are the same. Thereby, the buffer member 31 reflects the force in the collision direction from the movable element 20 in the deformation without being restricted by the member adjacent to the buffer member 31 and accommodates it in the space region 206. Can do. Accordingly, when the movable element 20 collides with the buffer member 31, the movable element 20 is not tightened by the deformation of the through hole 31A of the buffer member. As a result, the movement of the mover 20 is prevented, so that the kinetic energy does not decrease.

(Modification)
In addition, this invention is not limited to embodiment mentioned above, A various change is possible. For example, in the present embodiment, the vibration generator 1 has a configuration in which a standardized battery-shaped casing is provided on the outermost shell so as to surround the guide member 2, but is not limited thereto. The vibration generator may have a configuration in which a fixed coil and a permanent magnet movable within the guide member are provided inside the guide member. For example, the guide member 2 is used as the outermost shell, and the positive electrode terminal And a negative electrode terminal, a coil and a permanent magnet are provided inside, and a configuration of a vibration generator generally in the form of a standardized battery may be employed.

  The guide member 2 is not limited to a cylindrical shape, and a polygonal cylindrical member may be used. Further, the number of the permanent magnets 21 constituting the mover 20 and the configuration of the coil 12 formed in the bobbin case 11 are not limited to the above-described configuration. In particular, as long as the coil 12 is formed by winding an enamel wire around the bobbin case 11, the region delimited by the flange 11A and the winding direction of the enamel wire are not limited to those described above. . The vertical length of the permanent magnet 11 may not correspond to the interval at which the flange 11A of the bobbin case 11 is provided. The coil 12 may not be configured to be wound around the bobbin case 11 but may be configured such that an air-core coil is formed along the inner wall of the guide member 2.

  When the vibration generator of the present invention is applied to a remote controller or the like, the main body of the remote controller is used as a guide member, and each of the coil, the buffer member, the deformation restricting portion, and the gap portion is provided inside the remote controller. It is good also as a structure to provide. By using a casing of the outermost shell as the guide member of the vibration generator, a coil, a buffer member, a deformation restricting portion, and a gap portion can be provided corresponding to the shape and structure of the casing. By arranging each configuration of the vibration generator in consideration of the characteristics of the casing, it is possible to provide a vibration generator that sufficiently exhibits the power generation function, and can be applied to various casings. Moreover, this vibration generator can be applied not only to a remote controller but also to a penlight, a flashlight or the like having a lighting function.

1, 100, 200 Vibration generator 2 Guide member 2X Center axis of guide member 6, 106, 206 Spatial region 11, 111 Bobbin case 12 Coil 20 Movable element 21 Permanent magnet 22 Fastening member 22B Fixed part 30 Movement restricting part 31 Buffer member 31A Through-hole 32, 232 Support part 32A, 232A Deformation restricting part 232B Recessed part

Claims (8)

A cylindrical guide member;
A coil provided along the guide member;
A fastening member having a plurality of permanent magnets and a plurality of projecting portions for fixing the plurality of permanent magnets having the same poles facing each other from an end face, and movable in a predetermined direction along the wall of the guide member Movable armor,
A cylindrical buffer member that is disposed at both ends of the guide member, restricts movement of the mover, and has a through-hole through which the protruding portion can enter when the mover collides,
When the mover collides, the deformation of the through hole is restricted, and the length of the predetermined direction is shorter than the length of the buffer member in the predetermined direction.
A gap that can accommodate a deformed portion of the buffer member caused by the collision of the mover;
A vibration generator comprising: Support members for supporting the buffer member are provided at both ends in the moving direction of the guide member,
The deformation restricting portion is provided in the support member, and is provided along the through hole of the buffer member, and restricts deformation of the buffer member into the through hole, and the buffer member, The vibration generator according to claim 1, wherein the through hole is positioned so as to correspond to an axis in a moving direction of the mover.   3. The vibration generator according to claim 1, wherein a length of the protruding portion protruding from the permanent magnet in a moving direction is shorter than a length of the buffer member in a moving direction.   The gap is formed adjacent to a surface different from the surface having the through hole of the buffer member, and accommodates a deformed portion of the buffer member that is generated when the movable element collides. The vibration generator according to any one of claims 1 to 3. The guide member is a cylindrical member having a coil formed around it,
The gap is provided between the cylindrical member and the buffer member, and accommodates a deformed portion of the buffer member in the direction of the cylindrical member that is generated when the movable element collides. The vibration generator according to any one of claims 1 to 4.   The gap is provided between the buffer member and the inner wall of the guide member, and accommodates a deformed portion of the buffer member in the direction of the inner wall of the guide member that is generated when the movable element collides. The vibration power generator according to any one of claims 1 to 5.   The gap is provided between the buffer member and the support member, and accommodates a deformed portion of the buffer member in the direction of the support member that is generated when the movable element collides. The vibration generator according to any one of claims 1 to 6. A mover having a plurality of permanent magnets and a projecting portion that fixes the plurality of permanent magnets arranged with the same poles facing each other from an end surface,
A generator mover storage device used in a vibration generator that generates electricity by causing a coil to cross the magnetic flux of the permanent magnet,
A cylindrical guide member for moving the mover in a predetermined direction;
A coil provided along the guide member;
A cylindrical buffer member that is disposed at both ends of the guide member, restricts movement of the mover, and has a through-hole through which the protruding portion can enter when the mover collides,
When the mover collides, the deformation of the through hole is restricted, and the length of the predetermined direction is shorter than the length of the buffer member in the predetermined direction.
A gap that can accommodate a deformed portion of the buffer member caused by the collision of the mover;
A power generation mover storage device comprising: