CN110601436A

CN110601436A - Vibration power generation device

Info

Publication number: CN110601436A
Application number: CN201910476201.1A
Authority: CN
Inventors: 林高良
Original assignee: Yamauchi Corp
Current assignee: Yamauchi Corp
Priority date: 2018-06-12
Filing date: 2019-06-03
Publication date: 2019-12-20
Also published as: JP2019216527A

Abstract

The invention provides a vibration power generation device which utilizes opening and closing movement of a door and has a simple structure. The vibration power generation device (1) comprises a drive gear, a driven gear (16) rotating along with the rotation of the drive gear, a shaft (21) supporting the driven gear, a first magnet (26) supported by the shaft and rotating around a rotation axis (O) of the shaft, and a current generation part (3) arranged at a position adjacent to the first magnet. The current generation unit (3) includes a cylindrical member (31), a coil (34), and a vibration member (33) which is housed in the cylindrical member in a state of being capable of reciprocating along the extending direction of the cylindrical member and generates an attractive force with the first magnet.

Description

Vibration power generation device

Technical Field

The present invention relates to a power generator for generating power by opening and closing a door, and more particularly to a vibration power generator for generating power by linear reciprocating motion of a vibration member.

Background

A power generation device that generates power by opening and closing a door is disclosed in, for example, patent document 1 (japanese patent application laid-open No. 2004-62533) or patent document 2 (japanese patent application laid-open No. 2009-62673).

Patent document 1 discloses a door opening and closing device that can extract and use rotational energy during opening and closing operations of a door as electric power. The door opening and closing device includes a door openably and closably attached to a door frame via a door hinge, a rotary shaft supported by the door hinge and rotatable in response to opening and closing of the door, a first gear integrally rotatable with the rotary shaft, a second gear meshed with the first gear, and a DC generator having the rotary shaft of the second gear as a rotor.

Patent document 2 discloses a door closer with a power generation function that generates power by rotation of a pinion shaft of the door closer attached to a door. The door closer with the power generation function includes a drive gear that rotates integrally with a pinion shaft protruding from a hydraulic cylinder of the door closer, a speed-up gear including a gear that meshes with the drive gear, and a power generator including a rotor that is coaxially coupled to a final gear of the speed-up gear.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2004-204533

Patent document 2: japanese laid-open patent publication No. 2009-62673

Disclosure of Invention

(problems to be solved by the invention)

In the door opening and closing device disclosed in patent document 1, since the first gear is provided on the rotating shaft of the door supported by the door hinge and the power is generated by the rotation of the second gear engaged with the first gear, the engagement of the gear train may become resistance against the rotation of the door, which may prevent the smooth opening and closing operation of the door.

The door closer with the power generating function disclosed in patent document 2 does not directly connect the gear train to the rotating shaft of the door, and therefore does not hinder smooth opening and closing operations of the door. However, this door closer is provided with a speed increasing machine including a gear that engages with a drive gear integrally formed with a pinion shaft protruding from a hydraulic cylinder of the door closer and a rotor coaxially coupled to a final stage gear of the speed increasing machine is used as a generator, so that the overall structure thereof is complicated.

The invention aims to provide a vibration power generation device which utilizes opening and closing movement of a door and has a simple structure.

(means for solving the problems)

A vibration power generation device of one form of the present invention is mounted to a door closer, wherein the door closer includes a pinion shaft that supports a pinion gear that meshes with a rack gear. The vibration power generation device includes: a drive gear mounted to the pinion shaft and rotating with rotation of the pinion shaft; a driven gear that is engaged with the drive gear and rotates in accordance with rotation of the drive gear; a shaft supporting the driven gear; a first magnet that is axially supported and rotates around a rotation axis of the shaft; and a current generating part disposed adjacent to the first magnet. The current generating section includes a non-magnetic cylindrical member, a coil disposed on an outer periphery of the cylindrical member, and a vibrating member, wherein the vibrating member includes a second magnet that is housed in the cylindrical member in a state of being capable of reciprocating along an extending direction of the cylindrical member and generates an attractive force with the first magnet.

Preferably, the shaft includes a rotating body that rotates together with the shaft, and the first magnet is fixed to a surface of the rotating body.

Preferably, the first magnet is provided on the bottom surface of the rotating body, and the tubular member of the current generating unit is provided so as to face the bottom surface of the rotating body.

Preferably, the first magnet is provided on the outer peripheral surface of the rotating body, and the tubular member of the current generating portion is provided so as to face the outer peripheral surface of the rotating body.

Preferably, the vibration member is a spherical body and is constituted only by a permanent magnet.

Preferably, the vibration member includes three or more elements, and the elements at both ends are spheres. In this case, the remainder of the three or more elements is a sphere or cylinder, and the spheres at both ends have an outer diameter greater than the outer diameter of the remainder.

A vibration power generation device according to one aspect of the present invention is mounted to a sliding door. The vibration power generation device includes: a driving member rotated according to the movement of the sliding door; a shaft supporting the driving member; a first magnet that is axially supported and rotates around a rotation axis of the shaft; and a current generating part disposed adjacent to the first magnet. The current generating section includes a non-magnetic cylindrical member, a coil disposed on an outer periphery of the cylindrical member, and a vibrating member, wherein the vibrating member includes a second magnet that is housed in the cylindrical member in a state of being capable of reciprocating along an extending direction of the cylindrical member and generates an attractive force with the first magnet.

(effect of the invention)

According to the present invention, it is possible to provide a vibration power generation device having a simpler structure by utilizing the opening and closing movement of the door.

Drawings

Fig. 1 is a diagram schematically showing a state in which a vibration power generation device according to embodiments 1 to 3 of the present invention is mounted on a door closer.

Fig. 2 is a sectional view of a power generation main mechanism in embodiment 1 of the present invention.

Fig. 3 is a plan view schematically showing a rotating body, a first magnet, and a current generating unit constituting a vibration power generation device according to embodiment 1 of the present invention.

Fig. 4 is a plan view schematically showing an example of the operation of the current generating unit and the first magnet.

Fig. 5 is an equivalent circuit diagram showing a wireless notification device according to embodiment 1 of the present invention.

Fig. 6 is a sectional view of a power generation main mechanism in embodiment 2 of the present invention.

Fig. 7 is a front view schematically showing a vibration member in embodiment 2 of the present invention.

Fig. 8 is a front view schematically showing a vibration member in embodiment 2 of the present invention.

Fig. 9 is a sectional view of a power generation main mechanism in embodiment 3 of the present invention.

Fig. 10 is a plan view schematically showing a rotating body, a first magnet, and a current generating unit constituting a vibration power generation device according to embodiment 3 of the present invention.

Fig. 11 is a plan view schematically showing an example of the operation of the current generating unit and the first magnet.

Fig. 12 is a view schematically showing that the vibration power generation device according to embodiment 4 of the present invention is attached to a sliding door.

Description of reference numerals:

1. 1A, 1B and 1C vibration generating device, 2 and 2B driving part, 3A and 3B current generating part, 4-sliding door, 6 wireless informing device, 10 door closer, 11 and 43 rack, 12 pinion, 13 pinion shaft, 15 driving gear, 15C driving component, 16 driven gear, 17 and 17A, 17B power generation main mechanism, 18 hydraulic cylinder, 21 shaft, 22 bearing, 23 casing, 23A first cylindrical part, 23B second cylindrical part, 24 support plate, 25B rotating body, 26B first magnet, 27 cover part, 28 spacer, 29 nut, 31 cylindrical member, 32A repelling member, 33A vibrating member (second magnet), 34, 61 coil, 35 covering member, 36, 37, 38 element, 41 door, 42 door frame, 44 handle, 62 rectifying circuit, 63 charging circuit, 64 wireless signal transmitting device, 65 switch.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated.

In the present embodiment, an example in which the vibration power generation device is attached to the door closer will be described.

< embodiment 1 >

Referring to fig. 1, before describing a vibration power generation device 1 according to an embodiment of the present invention, a door closer 10 will be described first. In fig. 1, the direction indicated by the arrow a1 is referred to as the left-right direction, and the direction indicated by the arrow a2 is referred to as the up-down direction.

The door closer 10 is provided on a door (side hung door) to prevent the door from being closed without resistance when the door is closed.

As shown in fig. 1, the door closer 10 includes a rack 11 provided in a hydraulic cylinder 18, a pinion shaft 13 penetrating the hydraulic cylinder 18 in the vertical direction, and a pinion 12 provided in the hydraulic cylinder 18 and meshing with the rack 11. The pinion gear 12 is attached to the pinion shaft 13 and rotates in accordance with the rotation of the pinion shaft 13. In fig. 1, the outline of the hydraulic cylinder 18 of the door closer 10 is shown by a two-dot chain line.

The vibration power generation device 1 of the present embodiment is attached below the pinion shaft 13. The vibration power generation device 1 includes a drive gear 15, a driven gear 16, and a power generation main mechanism 17. The drive gear 15 is attached to the pinion shaft 13 and rotates in accordance with the rotation of the pinion shaft 13. The driven gear 16 meshes with the drive gear 15 and rotates in accordance with the rotation of the drive gear 15. Further, the drive gear 15 is fixed to the pinion shaft 13 using a bolt or the like.

The driving gear 15 has an outer diameter larger than that of the driven gear 16. In addition, the number of teeth of the drive gear 15 is larger than that of the driven gear 16. The number of teeth of the drive gear 15 is, for example, 120, and the number of teeth of the driven gear 16 is, for example, 16. In this case, when the driving gear 15 rotates 1 time, the driven gear 16 rotates about 8 times. Since the number of teeth of the drive gear 15 is larger than that of the driven gear 16, the number of rotations of the driven gear 16 can be increased when the door is opened and closed 1 time.

Referring to fig. 2, the power generation main mechanism 17 is explained. Fig. 2 is a sectional view of the power generation main mechanism 17 of the present embodiment. The power generation main mechanism 17 is composed of the drive unit 2 and the current generation unit 3.

First, the structure of the driving unit 2 will be described. The drive unit 2 includes a housing 23, a shaft 21, a spacer 28, a nut 29, a bearing 22, a support plate 24, a rotating body 25, a first magnet 26, and a cover 27.

The housing 23 has a first cylindrical portion 23a and a second cylindrical portion 23b having an outer diameter and an inner diameter larger than those of the first cylindrical portion 23a, and both ends of the housing 23 are open.

The housing 23 is formed of a non-magnetic body. The nonmagnetic material is not a ferromagnetic material, and includes a paramagnetic material, a diamagnetic material, and an antiferromagnetic material. Examples of the non-magnetic body include metals such as aluminum and synthetic resins such as plastics. In the present embodiment, the case 23 is preferably made of synthetic resin.

The shaft 21 is rotatably supported by the housing 23. The shaft 21 supports the driven gear 16 described above. Therefore, as the driven gear 16 rotates, the shaft 21 also rotates. The shaft 21 is provided rotatably about a rotation axis O along the extending direction thereof. The shaft 21 extends entirely within the first cylindrical portion 23a of the housing 23, and protrudes into the second cylindrical portion 23b above and below the first cylindrical portion 23 a. The shaft 21 has a driven gear 16 at its upper end and a rotating body 25 and a support plate 24 at its lower end. The shaft 21 is, for example, a shaft with a screw attached.

A nut 29 is provided for fixing the shaft 21 and the driven gear 16. Further, partition plates 28 are provided between the driven gear 16 and the bearing 22 and between the support plate 24 and the bearing 22.

A bearing 22 is provided to rotatably support the shaft 21 in the housing 23. The bearings 22 are provided at both ends in the extending direction in the first cylindrical portion 23a of the housing 23. In the present embodiment, the bearing 22 is an oilless bearing (oil METAL).

The support plate 24 is provided in contact with and fixed to the shaft 21. The support plate 24 is accommodated in the second cylindrical portion 23b of the housing 23. The support plate 24 is annular and is fixed by caulking to the lower end of the shaft 21. The support plate 24 may be a magnet or a non-magnet made of synthetic resin or the like.

A rotator 25 is fixed below the support plate 24. The rotating body 25 is cantilever-supported by the shaft 21. The rotating body 25 is provided on the bottom surface of the support plate 24. The rotating body 25 rotates around the rotation axis O of the shaft 21. The rotating body 25 is accommodated in the second cylindrical portion 23b of the housing 23. The rotator 25 has the same ring shape as the support plate 24, and the outer diameter of the rotator 25 is larger than that of the support plate 24. In addition, the rotating body 25 is a non-magnetic body.

A first magnet 26 is fixed to the surface of the rotating body 25. Specifically, a recess into which the first magnet 26 is fitted is provided in the bottom surface of the rotating body 25, and the first magnet 26 is provided in the recess. The first magnet 26 is magnetized on both sides and in the vertical direction. The first magnet 26 is supported by the shaft 21 and rotates about the rotation axis O of the shaft 21. The first magnet 26 of the present embodiment has a cylindrical outer shape, but may have a prismatic or spherical shape, for example, and may be magnetized in the vertical direction, and the shape thereof is not limited.

The magnet is a permanent magnet. The material of the magnet is not particularly limited, but a Nd-Fe-B sintered magnet (neodymium magnet) is preferably used from the viewpoint of high magnetic properties.

A lid 27 is provided to cover the lower end of the second cylindrical portion 23b of the housing 23. A projection is formed on the outer periphery of the lid 27. The open end of the second cylindrical portion 23b engages with the convex portion of the cap 27.

Next, the current generating unit 3 will be described with reference to fig. 2. The current generating unit 3 of the present embodiment is provided adjacent to the first magnet 26 of the driving unit 2. The current generating portion 3 includes a cylindrical member 31, a repulsive member 32, a vibration member 33, a coil 34, and a cover member 35.

The cylindrical member 31 of the present embodiment is provided to face the bottom surface of the rotating body 25. That is, the cylindrical member 31 contacts the lid portion 27 and is disposed along the lid portion 27. The cylindrical member 31 is a rod-like member having a hollow interior, and both ends thereof are open. The cylindrical member 31 of the present embodiment extends in the left-right direction (extending direction of the cylindrical member) in fig. 2. The outer shape and the inner shape (hollow shape) of the cylindrical member 31 are not particularly limited, and examples thereof include a circular shape and a rectangular shape in a cross-sectional view. The cylindrical member 31 of the present embodiment is formed by a cylindrical member, and its outer shape and inner shape are circular in cross-section.

The cylindrical member 31 is formed of a non-magnetic body. The nonmagnetic material is not a ferromagnetic material, and includes a paramagnetic material, a diamagnetic material, and an antiferromagnetic material. Examples of the non-magnetic body include metals such as aluminum and synthetic resins such as plastics.

A coil 34 is wound around the outer periphery of the cylindrical member 31. Therefore, the cylindrical member 31 also functions as a bobbin of the coil 34. The coil 34 of the present embodiment is provided on a part of the outer periphery of the cylindrical member 31, but may be provided on the entire outer periphery of the cylindrical member 31 or may be provided in a region separated from the outer periphery of the cylindrical member 31. The coil 34 is, for example, a solenoid coil.

Inside the cylindrical member 31, a vibration member 33 is provided in a state of being capable of reciprocating in the left-right direction of the cylindrical member 31. Since the coil 34 is disposed on the outer periphery of the cylindrical member 31, the vibration member 33 reciprocates inside the coil 34.

In the present embodiment, the vibration member 33 is constituted by one spherical magnet (second magnet). The second magnet 33 is a permanent magnet magnetized in opposite polarities to form hemispherical N-pole and S-pole. The outer diameter of the vibration member 33 is slightly smaller than the inner diameter (hollow diameter) of the cylindrical member 31. The coil 34 generates a voltage by the reciprocating motion of the vibration member 33. That is, by the lines of magnetic induction generated from the vibration member 33 perpendicularly intersecting the coil 24, an alternating current is generated in the coil 34.

The tubular member 31 has repelling members 32 at both ends thereof. The pair of repelling members 32 are closing members that close the openings at both ends of the cylindrical member 31. That is, the vibrating member 33 that reciprocates is housed inside the cylindrical member 31 via the pair of repelling members 32. In the present embodiment, the repelling member 32 is an elastic member that is a non-magnetic body, and is preferably formed of an elastic body such as resin or rubber. That is, the vibration member 33 that collides against one of the repulsive members 32 is rebounded to the other elastic member side due to the elastic force of the repulsive member 32. Each closing member for closing the opening of the cylindrical member 31 may be constituted by the repelling member 32 as a whole, or may be constituted by the repelling member 32 at least in a portion in contact with the vibrating member 33.

A pair of cover members 35 that cover the repelling members 32 may be provided at both ends of the cylindrical member 31. The cover member 35 is formed of a non-magnetic material. The current generating unit 3 may not have the pair of covering members 35, and may be configured by a single case.

Further, referring to fig. 3 and 4, the operation of the first magnet 26 and the second magnet 33 will be described with the opening and closing operation of the door. Fig. 3 is a plan view schematically showing an example of the positional relationship between the current generating unit 3 and the first magnet 26. Fig. 4 is a plan view schematically showing an example of the relative movement between first magnet 26 and second magnet 33. In order to show the positional relationship between the first magnet 26 and the second magnet 33, the current generating unit 3 and the first magnet 26 are shown by solid lines in fig. 3 and 4, while the rotating body 25 is shown by two-dot chain lines. In fig. 3 and 4, members other than the rotating body 25, the first magnet 26, and the current generating unit 3 are not shown for easy understanding.

As shown in fig. 1, the pinion shaft 13 of the door closer 10 rotates corresponding to the opening and closing of the door. As the pinion shaft 13 rotates, the drive gear 15 rotates, and the driven gear 16 meshing with the drive gear 15 also rotates. As a result, as shown in fig. 2, the shaft 21 supporting the driven gear 16 rotates, and the support plate 24, the rotating body 25, and the first magnet 26 attached to the lower end of the shaft 21 rotate. The relative positions of the first magnet 26 and the vibrating member (second magnet) 33 change by the mutual attraction force. That is, the second magnet 33 reciprocates in the left-right direction in the current generating unit 3 by the rotation of the first magnet 26.

An example of the principle of the second magnet 33 reciprocating in the current generating section 3 will be described. As shown in fig. 4, when the first magnet 26 of the driving unit 2 is located at a position overlapping the cylindrical member 31 (for example, on the left side of the drawing), the second magnet 33 of the current generating unit 3 is located at a left position of the cylindrical member 31 due to the attractive force of the first magnet 26. When the first magnet 26 rotates in the direction of arrow B1 and is located at a position (for example, above the paper) distant from the cylindrical member 31, the second magnet 33 moves in the direction of arrow C1 due to the attraction force of the first magnet 26 and the repulsion force of the repulsion member 32. When the first magnet 26 rotates in the direction of arrow B2 and is positioned at a position overlapping the cylindrical member 31 (for example, the right side of the drawing sheet), the second magnet 33 moves in the direction of arrow C2 due to the attractive force of the first magnet 26. Next, when the first magnet 26 rotates in the direction of arrow B3 and is located at a position (for example, below the paper surface) away from the cylindrical member 31, the second magnet 33 moves in the direction of arrow C3 due to the attractive force of the first magnet 26 and the repulsive force of the repulsive member 32. Further, when the first magnet 26 rotates in the direction of arrow B4 and is positioned at a position overlapping the cylindrical member 31 (for example, on the left side of the drawing sheet), the second magnet 33 moves in the direction of arrow C4 due to the attractive force of the first magnet 26. As described above, the first magnet 26 rotates about the rotation axis O by the rotation of the shaft 21 in accordance with the opening and closing operation of the door, and the second magnet 33 reciprocates in the left-right direction.

As described above, the rotating body 25 including the first magnet 26 rotates by the opening and closing operation of the door, and the second magnet 33 repeats the attraction and repulsion with the first magnet 26, thereby reciprocating in the left and right directions in the cylindrical member 31. By continuing this operation, the reciprocating motion of second magnet 33 is generated in current generating unit 3, and second magnet 33 repeatedly passes through coil 34, thereby generating electromagnetic induction.

The power generation device using the conventional door closer generates power by using rotational energy of rotational motion, and has a complicated structure because a plurality of gears are required. In contrast, the vibration power generation device 1 of the present embodiment converts rotational motion into linear motion to generate power, and therefore can be formed with a simple configuration.

In addition, in the present embodiment, since the spherical magnet is used as the vibration member 33, the frictional resistance with the cylindrical member 31 can be suppressed. As a result, the current can be efficiently generated with a low torque, and the resistance to be applied when the door is opened and closed can be reduced as compared with the conventional art.

According to the present embodiment, in the power generation main mechanism 17, the current generation unit 3 is provided at a position adjacent to the first magnet 26, whereby the vibration member 33 can be stably reciprocated. That is, a stable operation of the apparatus can be provided.

Further, the vibration power generation device 1 may use a wireless notification device. In the following description, the vibration power generation device 1 is used as an example of a wireless notification device.

Fig. 5 is an equivalent circuit diagram of the wireless notification apparatus 6. The wireless notification device 6 used in the present embodiment is a device that notifies information such as opening and closing of a door, for example. Referring to fig. 5, a rectifier circuit 62 is provided at one end of the coil 61 and rectifies the alternating current generated in the coil 61. The charging circuit 63 uses, for example, an electric double layer capacitor. The wireless signal transmitting device 64 is not particularly limited as long as it generates radio waves when current is applied. In this case, a receiving device that receives the radio wave emitted from the wireless signal emitting device 64 to emit light or sound, for example, is provided in the living room. Further, the wireless notification device 6 may be provided with a switch 65 operated by the user.

< embodiment 2 >

Referring to fig. 6 to 8, a vibration power generation device 1A according to embodiment 2 of the present invention will be described. The vibration power generation device 1A of embodiment 2 basically has the same configuration as the vibration power generation device 1 of embodiment 1, but mainly differs from the vibration power generation device 1 of embodiment 1 in the vibration member 33A and the repulsive member 32A of the current generating section 3A as shown in fig. 6.

As shown in fig. 6 to 8, in the present embodiment, the vibration member 33A includes three or more elements 36, 37, and 38, and the three or more elements are arranged along the direction of reciprocation. Of the three or more elements, the elements 36 located at both ends (elements at both ends) are spherical bodies. Of the three or more elements, the elements (remaining elements) 37 and 38 located at the other ends (central portion) are cylinders in fig. 6, spheres in fig. 7, and columns in fig. 8. In addition, the column and the sphere mean that the sphere and the column are in the shape of a sphere and a column, and include a sphere and a column with a hollow inside. The column includes a cylinder, a prism, a rod, and the like, and is a cylinder in the present embodiment.

As shown in FIGS. 6-8, the outer diameter of the elements 36 at both ends is larger than the outer diameter of the remaining elements 37, 38. In this case, the elements 36 at both ends are portions of the vibration member 33A which are in contact with the cylindrical member 31. In the vibration member 33A, the outer diameters of the elements 36 at both ends are substantially the same. The substantially same means that the elements 36 at both end portions contact the cylindrical member 31, respectively, when the vibration member 33A reciprocates. The vibrating member 33A is not particularly limited as long as it is of such a size that it can freely reciprocate inside the cylindrical member 31.

Further, the outer diameter of the sphere means its diameter. The outer diameter of the column is the diameter of a circle on the bottom surface in the case of a column, and is the diameter of a circle circumscribing the bottom surface in the case of an n-angled bottom surface (n is an integer of 3 or more).

In the structures shown in fig. 6 to 8, the elements constituting the vibration member 33A are constituted only by permanent magnets. In this case, since the permanent magnets are held by the magnetic attraction force, the vibration members 33A are held by each other only by the magnetic attraction force. Further, the use of a plurality of permanent magnets for the vibration member 33A has an advantage of increasing the generated magnetic force and improving the power generation efficiency. The elements 36 at both ends may be magnets such as yoke material, and in this case, the remaining elements 37 and 38 are magnets. The magnetic yoke is soft iron for amplifying the adsorption force of the magnet, and the magnetic yoke only needs to contain iron and comprises paramagnetic materials.

Note that the vibration member 33A shown in fig. 7 and 8 is an example, and a portion thereof in contact with the cylindrical member 31 may not be a sphere. Further, even when the portion of the vibration member 33A in contact with the cylindrical member 31 is a spherical body, the structure is not limited to the above, and for example, the vibration member 33A may be configured by two elements, which are spherical bodies of a permanent magnet.

In the present embodiment, when the vibration member 33A is composed of three or more elements, a permanent magnet may be provided in the repulsive member 32A. In this case, the permanent magnet of the repulsive member 32A is magnetized in the left-right direction, and is disposed so that the pole facing the vibration member 33A is the same pole as the vibration member 33A.

In the present embodiment, when the vibration member 33A moves to the side of the repulsive member 32A through the coil 34 in the reciprocating motion of the vibration member 33A in the cylindrical member 31, the vibration member 33A magnetically repels the repulsive member 32A at a position adjacent to the repulsive member 32A, and the repulsive force accelerates the motion of the vibration member 33A returning to the center portion. Therefore, the reciprocating motion of the vibration member 33A can be performed efficiently. This reduces the energy required for the vibration power generation device 1A to reciprocate the vibration member 33A, and increases the number of vibrations of the vibration member 33A compared with the vibration power generation device 1 according to embodiment 1. That is, the vibration power generation device 1A of the present embodiment can increase the amount of power generation in one door opening and closing operation as compared with the vibration power generation device 1 of embodiment 1.

As described above, by using the vibration member 33A composed of a plurality of elements, a higher electromotive force can be generated in the coil 34 with a smaller amount of movement, and therefore, the power generation efficiency of the vibration power generation device 1A can be improved.

In the present embodiment, when the vibration member 33A reciprocates in the cylindrical member 31, since the elements 36 at both end portions of the vibration member 33A contact the cylindrical member 31, the vibration member 33A slides in a state where the vibration member 33A is in point contact with the cylindrical member 31. This can reduce the sliding area between the vibration member 33A and the cylindrical member 31, and thus can reduce the contact resistance (sliding resistance). Since the vibration member 33A can be easily moved, the kinetic energy of the vibration member 33A generated by the force applied to the vibration power generation device 1A can be efficiently converted into the electric energy generated by the coil 34, and therefore, the amount of power generation can be further increased as compared with the present embodiment 1.

In the present embodiment, as shown in fig. 7 and 8, the vibration member 33A includes three or more elements, each of the three or more elements is a sphere, the outer diameters of the elements 36 at both end portions are larger than the outer diameters of the remaining elements 37 and 38, and these elements are preferably magnets. This can reduce the contact resistance between the vibration member 33A and the cylindrical member 31 when the vibration member 33A reciprocates, and can further improve the power generation efficiency.

< embodiment 3 >

A vibration power generation device 1B according to embodiment 3 of the present invention will be described with reference to fig. 9 to 11. The vibration power generation device 1B according to embodiment 3 basically has the same configuration as the vibration power generation device 1 according to embodiment 1, but as shown in fig. 9, the rotor 25B, the first magnet 26B, and the current generation unit 3B of the driving unit 2B are different from the vibration power generation device 1 according to embodiment 1. The current generating unit 3B is different only in the mounting position, and the structure of the current generating unit 3B is the same as that of embodiment 1.

Fig. 10 is a plan view schematically showing an example of the positional relationship between the current generating unit 3B and the first magnet 26B. Fig. 11 is a plan view schematically showing an example of the relative movement between first magnet 26B and second magnet 33. In fig. 10 and 11, in order to show the positional relationship between the first magnet 26B and the second magnet 33, the current generating unit 3B and the first magnet 26B are shown by solid lines, while the rotating body 25B is shown by two-dot chain lines. In fig. 10 and 11, members other than the rotating body 25B, the first magnet 26B, and the current generating unit 3B are not shown for ease of understanding.

A first magnet 26B is provided on the outer peripheral surface of the rotating body 25B in the present embodiment. Specifically, a recess into which the first magnet 26B is fitted is provided in the outer peripheral surface of the rotating body 25B, and the first magnet 26B is provided in the recess. The first magnet 26B is magnetized on both sides and in the left-right direction. The first magnet 26B is supported by the shaft 21 and rotates about the rotation axis O of the shaft 21. The first magnet 26B of the present embodiment has a cylindrical outer shape, but may be, for example, a spherical shape, and the shape is not limited as long as it is magnetized in the right-left direction.

In the present embodiment, the cylindrical member 31 of the current generating portion 3B is provided to face the outer circumferential surface of the rotating body 25B. That is, the cylindrical member 31 of the current generating portion 3B is disposed in contact with the outer peripheral surface of the second cylindrical portion 23B of the housing 23 so as to be substantially horizontal to the first magnet 26B.

An example of the principle of the second magnet 33 reciprocating in the current generating section 3B will be described. As shown in fig. 11, when the first magnet 26B of the driving portion 2B is located in the vicinity of the cylindrical member 31 (for example, on the left side of the drawing), the second magnet 33 of the current generating portion 3B is located in the central portion of the cylindrical member 31 by the attractive force of the first magnet 26B. When the first magnet 26B rotates in the direction of arrow D1 and moves to a position away from the cylindrical member 31 (for example, above the paper), the second magnet 33 moves in the direction of arrow E1 due to the attractive force of the first magnet 26B. When the first magnet 26B rotates in the direction of arrow D2 and arrow D3 and is located at a position away from the cylindrical member 31 (for example, right side of the paper and below the paper), the second magnet 33 moves in the direction of arrow E2 by the repulsive force of the repulsive member 32. Further, when the first magnet 26B rotates in the direction of arrow D4 and is positioned adjacent to the cylindrical member 31 (for example, on the left side of the drawing sheet), the second magnet 33 moves in the direction of arrow E1 due to the attractive force of the first magnet 26B. As described above, the first magnet 26B rotates about the rotation axis O by the rotation of the shaft 21 in accordance with the opening and closing operation of the door, and the second magnet 33 reciprocates in the left-right direction.

As described above, the rotating body 25B including the first magnet 26B is rotated by the opening and closing operation of the door, and thereby the second magnet 33 repeats attraction and repulsion with the first magnet 26B, and the second magnet 33 reciprocates in the extending direction of the cylindrical member 31 in the cylindrical member 31. By continuing this operation, the reciprocating motion of second magnet 33 is generated in current generating unit 3B, and second magnet 33 repeatedly passes through coil 34 to generate electromagnetic induction.

< embodiment 4 >

In the above-described embodiments 1 to 3, the vibration power generation devices 1 to 1B used in the door closer 10 attached to the side hung door have been described, but the vibration power generation device 1C of the embodiment may be provided in a sliding door, for example.

Referring to fig. 12, a vibration power generation device 1C according to embodiment 4 of the present invention will be described.

The sliding door 4 includes a door 41 having a handle 44 and a door frame 42 surrounding the door 41. The vibration power generation device 1C of the present embodiment is provided in the door frame 42, and is provided in the upper end portion of the door 41 so as to abut against the driving member 15C described below.

The vibration power generation device 1C of the present embodiment includes a driving member 15C and a power generation main mechanism 17. The power generation main mechanism 17 of the present embodiment is the same as the above-described embodiments 1 to 3. The vibration power generator 1C is a member in which the power generation main mechanism 17 of the vibration power generators 1 to 1B is disposed in a vertically inverted manner.

The driving member 15C rotates as the door 41 moves. The driving member 15C is, for example, a cylindrical rotating body such as a rubber roller, and may be any member that rotates in accordance with opening and closing of the door 41, and the material and shape thereof are not particularly limited.

In the present embodiment, unlike embodiments 1 to 3, the driving member 15C is directly coupled to the lower end portion of the shaft 21 of the power generation main mechanism 17. That is, the shaft 21 can be rotated without the driven gear 16 and power can be generated.

In embodiments 1 to 3, the vibration power generation devices 1, 1A, and 1B are used for a side hung door, and in embodiment 4, an example in which the vibration power generation device 1C is used for a sliding door has been described, but the vibration power generation devices 1 to 1C of embodiments 1 to 3 may be provided for an automatic door or the like, for example.

In embodiment 1, the configuration of the wireless notification device 6 using the vibration power generation device 1 is described as an example of use with reference to fig. 5, but the present invention is not limited to this, and may be applied to, for example, a lock mechanism of a double door. The lock mechanism is, for example, a mechanism in which two doors mutually receive opening and closing information of the doors, and thus, when one of the double doors is opened, the other door is not opened.

In embodiments 1 and 2, the current generating unit 3 is described as being provided on the bottom surface of the driving unit 2, and in embodiment 3, the current generating unit 3 is described as being provided on the outer peripheral surface of the driving unit 2, but the current generating unit 3 may be provided on both the bottom surface and the outer peripheral surface of the driving unit 2. The number of current generating portions 3 is not limited, and two or more current generating portions 3 may be provided on the bottom surface or the outer peripheral surface of the driving portion 2, for example.

In embodiment 4, an example in which the vibration power generation device 1C is provided on the door frame 42 is described, but the present invention is not limited to this configuration, and for example, the vibration power generation device 1C having a drive gear that meshes with a rack may be provided on the door frame 42 by providing the rack along the width direction of the door 41.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the embodiments shown in the drawings. Various modifications and variations can be added to the embodiments shown in the drawings within the same scope or equivalent scope of the present invention.

Claims

1. A vibration power generation device mounted on a door closer including a pinion shaft supporting a pinion gear meshed with a rack, the vibration power generation device comprising:

a drive gear attached to the pinion shaft and rotating with rotation of the pinion shaft;

a driven gear that meshes with the drive gear and rotates in accordance with rotation of the drive gear;

a shaft supporting the driven gear;

a first magnet supported by the shaft and rotating around a rotation axis of the shaft; and

a current generating part disposed adjacent to the first magnet,

the current generating unit includes a non-magnetic cylindrical member, a coil disposed on an outer periphery of the cylindrical member, and a vibrating member, wherein the vibrating member includes a second magnet that is housed in the cylindrical member in a state of being capable of reciprocating along an extending direction of the cylindrical member and generates an attractive force with the first magnet.

2. Vibration power generation device according to claim 1,

the shaft includes a rotating body that rotates together with the shaft,

the first magnet is fixed to the surface of the rotating body.

3. Vibration power generation device according to claim 2,

the first magnet is provided on the bottom surface of the rotating body, and the cylindrical member of the current generating unit is provided so as to face the bottom surface of the rotating body.

4. Vibration power generation device according to claim 2,

the first magnet is provided on the outer peripheral surface of the rotating body, and the tubular member of the current generating unit is provided so as to face the outer peripheral surface of the rotating body.

5. A vibration power generation device according to any one of claims 1 to 4,

the vibration component is a sphere and only consists of a permanent magnet.

6. A vibration power generation device according to any one of claims 1 to 4,

the vibration member includes three or more elements, and the elements at both ends are spherical bodies.

7. Vibration power generation device according to claim 6,

the remaining part of the three or more elements is a sphere or a cylinder, and the outer diameter of the spheres at the two end parts is larger than that of the remaining part.

8. A vibration power generation device mounted on a sliding door, the vibration power generation device comprising:

a driving member rotated according to the movement of the sliding door;

a shaft supporting the driving member;

a current generating part disposed adjacent to the first magnet,