JP7406188B2 - vibration power generation device - Google Patents

Description

The present invention relates to a vibration power generation device that generates vibration power by adjusting a resonance frequency, and particularly relates to a vibration power generation device that easily adjusts the resonance frequency using an adjustment jig.

In recent years, technological innovations related to energy harvesting (energy harvesting) have been made, and the vibrations of machines and moving machines are used to generate electricity, and the power is used as a power source for LED displays, acceleration sensors, temperature sensors, etc. Various proposals have been made regarding technologies for use as a power source for sensors and as a power source for wireless transmitters that wirelessly transmit sensor signals.

On the other hand, in order to increase power generation efficiency, it is most efficient to generate power by matching the vibration frequency of the vibration generation part and the resonance frequency of the vibration power generation device, but the vibration frequencies of the vibration generation part are different, and Since it may change over time, it is necessary to adjust the resonance frequency of the vibration power generator to match it.

Patent Document 1 provides a plurality of coil springs that connect a vibration unit and a fixed unit, and positions a fixed side connecting portion, which is a connecting portion between the coil spring and the fixed unit, so that the direction of expansion and contraction of the coil spring is oblique to the vibration direction. By providing a connecting part position variable means that continuously changes the position of the fixed side connecting part, the apparent spring constant in the vibration direction of the coil spring can be continuously changed as the position of the fixed side connecting part changes, so the resonant frequency can be adjusted. It is said that the work efficiency is improved.

Patent Document 2 discloses two magnetic spring parts that are provided at both ends in the axial direction via guide rods, each configured as a pair of magnets, and an adjustment mechanism that can adjust the distance between the magnets of the two magnetic spring parts. By having a mechanism that can change the resonant frequency without contact, it is possible to easily make adjustments to obtain the desired resonant frequency, and to improve mechanical strength against acceleration. .

Japanese Patent Application Publication No. 2018-088771 Japanese Patent Application Publication No. 2015-180134

However, in both the technologies of Patent Document 1 and Patent Document 2, a mechanism for adjusting the resonance frequency is permanently installed inside the vibration power generation device, which not only complicates the mechanism but also increases the size of the device and increases manufacturing costs. There was a problem with rising. In particular, when a large number of vibration power generation devices are installed at multiple locations within a factory, the increased manufacturing cost is a major problem. Further, since the adjustment mechanism is provided inside the vibration power generation device, there is a problem in that the adjustment mechanism is easily damaged or worn out due to vibration, resulting in failure or displacement of the resonance point.

It is an object of the present invention to solve the above problems and provide a vibration power generation device with a simple mechanism, low cost, and high reliability.

In the present invention, means 1 for achieving the above object includes a vibration unit, a pair of fixing units held on a holding frame, and a fixing block for fixing the holding frame.
One end is fixed to the end of the vibration unit, and the other end is between the vibration unit and the presser block, and the plate spring screwed and fixed to the fixing block with the plate spring fixing screw through the presser block. a guide block having a slit hole provided in the center at the position ;
The leaf spring is inserted into the slit hole of the guide block, and its end extends from the presser block in the opposite direction to the vibration unit, and the leaf spring is lengthened so that the vibration unit resonates with the vibration of the vibration generator. It is arranged so that it can be moved in the direction and fixed.

According to the means 1 of the present invention, after the leaf spring is inserted into the slit hole of the guide block , the leaf spring is screwed and fixed to the fixed block beyond the guide block with the leaf spring fixing screw via the presser block, thereby tightening the leaf spring. There is an advantage that the point where the amplitude is maximum, that is, the resonance point, does not change. In addition, when adjusting the resonance frequency, loosen the leaf spring fixing screw and adjust the length of the leaf spring inside the vibration power generator while grasping the end of the leaf spring that extends in the opposite direction of the vibration unit with a tool or jig. It has a structure that allows easy adjustment from the outside, does not require a complicated mechanism inside the vibration power generation device, and has the advantage that problems such as damage to parts, wear, and changes in resonance points due to vibration are less likely to occur. Therefore, it is possible to provide an inexpensive and highly reliable vibration power generation device with a simple mechanism. Furthermore, there is an advantage that the problem of increasing the size of the device and increasing the manufacturing cost does not occur. In particular, when a plurality of vibration power generation devices are arranged and used, the reduction in manufacturing cost is a very big advantage.

As a result of the above, according to the present invention, it is possible to provide an inexpensive and highly reliable vibration power generation device with a simple mechanism.

(Other means to solve problems)
Means 2 of the present invention is that the guide block is divided into at least two parts at the slit hole. According to means 2 of the present invention, by dividing the guide block, the slit holes in the guide block that guides the leaf spring can be easily and precisely machined, and by combining each part, variations in the thickness and width of the leaf spring can be eliminated. Furthermore, it has the effect of being able to flexibly respond to cases such as changing the thickness of the leaf spring in order to greatly change the resonant frequency.

In particular, when forming the slit hole in the guide block by placing spacers of the same thickness as the leaf spring on both sides of the leaf spring and sandwiching them between guide block holders, the blocks on both sides of the leaf spring are flat. Since the slit can be formed using the slit process, it is possible to form a pseudo slit that is completely unaffected by the machining accuracy of slit machining or step machining, which has an additional advantage.

Means 3 of the present invention includes a cylindrical cylinder in which a cylinder opening hole with a circular cross section passes through the center axis in an adjustment jig engagement hole provided at an end of a leaf spring, and a cylinder opening hole with a circular cross section that extends in the axial direction. Insert the engagement protrusion of the adjustment jig consisting of a linearly moving cylindrical piston and adjust the effective length L of the spring part of the leaf spring so that it matches the resonant frequency at which the amplitude of the vibration unit is maximum. The plate spring is screwed and fixed to the fixing block by the plate spring fixing screw via the presser block.

According to means 3 of the present invention, the adjustment to match the resonance frequency at which the amplitude of the vibration unit is maximum is an adjustment work in which the effective length L of the spring part is adjusted to a delicate length while vibrating, and the adjustment of the leaf spring Inserting the engagement protrusion of the adjustment jig into the jig engagement hole and moving the adjustment jig directly has the effect of allowing easy adjustment. In particular, when the adjustment jig is moved in a linear manner, if a deceleration mechanism is provided inside the adjustment jig to enable fine adjustment, the adjustment becomes easier.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole vibration power generation device of this invention. FIG. 2 is an exploded perspective view showing the vibration power generation section of the vibration power generation device of the present invention. FIG. 3 is an exploded perspective view showing the attachment of the leaf spring in FIG. 2; FIG. 3 is a perspective cross-sectional view taken along line AA, showing the attachment of the leaf spring in FIG. 2; FIG. 3 is a partially exploded perspective view showing the attachment of the leaf spring in FIG. 2; It is an exploded perspective view showing the 1st modification of the guide block in the vibration power generation device of the present invention. It is an exploded perspective view which shows the 2nd modification of the guide block in the vibration power generation device of this invention. It is a perspective view of the adjustment jig used for resonance frequency adjustment of the vibration power generation device of the present invention. FIG. 2 is an exploded perspective view of an adjustment jig used for adjusting the resonance frequency of the vibration power generation device of the present invention. FIG. 9 is a perspective cross-sectional view of the adjustment jig shown in FIG. 8; FIG. 2 is a perspective view showing how a resonant frequency adjustment jig is attached to the vibration power generation device according to the present invention. It is a perspective view of the resonance frequency adjustment method of the vibration power generation device in this invention. It is a perspective view after resonance frequency adjustment of the vibration power generation device in this invention. It is an exploded perspective view of another adjustment jig used for resonance frequency adjustment of the vibration power generation device of the present invention. FIG. 7 is an exploded perspective view of yet another adjustment jig used for adjusting the resonance frequency of the vibration power generation device of the present invention. FIG. 2 is a perspective view showing an application example of the vibration power generation device of the present invention attached to a frame at a vibration generation location. FIG. 2 is a perspective view showing an application example in which the vibration power generation device of the present invention is placed on the floor and attached to a frame. FIG. 7 is a partially exploded perspective view of a vibration power generation device according to another embodiment of the present invention.

Embodiments of the present invention will be described below based on FIGS. 1 to 5. In FIGS. 1 and 2, the vibration power generation device 10 has a vibration unit 11 in the center, and two fixed units 12 are arranged with a slight interval between them so as to sandwich the vibration unit 11 from both sides. is configured. In FIG. 2, the vibration unit 11 is made by covering a copper core wire with an insulating film, layering it in multiple layers and winding it around an insulating bobbin 26 made of synthetic resin or the like, which is vertically oval in the vertical direction, to form a coil. 27 is formed.

One longitudinal end of the bobbin 26 of the vibration unit 11 is fitted from below so as to be sandwiched between the ends 26a of the bobbin 26, corresponding to the ends of the flexible leaf spring 15 bent into an L-shape. Then, a leaf spring mounting block 28 is attached and fixed with fixing screws 29 so as to sandwich the mounting portion 15e of the leaf spring 15 bent into an L shape. (See Figure 3)

On the other hand, in the fixed unit 12, two permanent magnets 22, such as rectangular bar-shaped neodymium magnets or samarium cobalt magnets, are arranged in parallel to a holder 21 made of synthetic resin, and each is embedded in the holder 21 at a constant interval. They are installed in pairs on the left and right. That is, the fixing units 12 are provided opposite to each other with the vibration unit 11 in between, and the two fixing units 12 are arranged such that the upper part of the holding frame 13 made of sheet metal is connected to the first bridging member 13c, and the lower part is connected to the first bridging member 13c. It is positioned and held inside a box-shaped structure 13a connected by two bridging members 13d. Furthermore, the ends 13b of the two arms extending from the box-shaped structure 13a of the holding frame 13 are fixed to the left and right side surfaces 14e, 14e of the fixing block 14 with fixing unit mounting screws 31.

The configuration of the attachment portion of the vibration unit 11 will be described with reference to FIGS. 3, 4, and 5. A thin strip-like plate spring 15 whose one end (upper end) is attached to the vibration unit 11 has an adjustment jig engagement hole 15a near the end within a plane of the other end to engage with an adjustment jig to be described later. An oval opening hole 15b is provided above the adjustment jig engagement hole 15a. Both sides of the opening hole 15b are connected to the spring portion 15d by arm portions 15c, thereby forming a leaf spring 15. It is preferable to use a flexible stainless steel plate such as SUS304-CSP for the plate spring 15.

A guide block 16 is fixed to the upper surface 14a of the fixed block 14 with a block fixing screw 19, and a slit groove having substantially the same dimensions as the thickness t and width B of the leaf spring 15 is formed in the approximate center of the guide block 16. A slit hole 16a having a width T and a slit width W is formed, and a small rounded chamfer 16ab is provided on the ridgeline of the slit hole 16a. This chamfered portion 16ab is a base point of vibration of the leaf spring 15, and serves to alleviate bending stress of the leaf spring 15 due to vibration. Note that the guide block 16 is fixed with block fixing screws 19 so that the slit guide surface 16b of the slit hole 16a and the mounting surface 14c of the fixed block 14 are on the same plane.

The vibration unit 11 is attached by inserting the tip (lower end) of the leaf spring 15 on the side of the opening 15b into the slit hole 16a of the guide block 16, as shown in FIG. At this time, the dimensions of the slit hole 16a and the plate spring 15 are approximately the same, and the relationship among T, t, W, and B is expressed by Equation (a) of Equation 1.

Due to the above relationship, the leaf spring 15 is inserted into the slit hole 16a in a state where it can slide smoothly without play.

As shown in FIGS. 4 and 5, the leaf spring 15 is tightened to the female mounting threaded portion 14b of the fixing block 14 with the leaf spring fixing screw 18 via the presser block 17 so that the arm portion 15c is in contact with the mounting surface 14c. It will be done. At this time, the threaded portion of the leaf spring fixing screw 18 passes through the opening hole 15b, and the presser surface portion 17a of the presser block 17 presses against the arm portion 15c to securely fix the leaf spring 15. It has a shape that can vibrate as a leaf spring with effective length L and width B.

Note that even if the position of the leaf spring 15 moves up and down, the end of the upper surface of the opening hole 15b does not protrude upward from the upper end surface of the slit hole 16a of the guide block 16. This is because the plate spring fixing screw 18 passes through the opening hole 15b. That is, the position of the fulcrum, which is the origin of vibration of the leaf spring 15, is always the holding position of the slit hole 16a, and is supported by the entire width B of the leaf spring 15.

The principle of power generation is that the vibration unit 11 vibrates in the direction of the arrow on the arc in FIG. 2 in response to the magnetic flux generated by the fixed units 12 facing each other, and an electromagnetic induction current is generated in the coil 27 of the vibration unit 11 due to the change in magnetic flux. The power generation efficiency of the vibration power generation device 10 depends on how to increase the electromagnetic induction current, and in order to do so, the vibration unit 11 must resonate with the vibration of the vibration generating part and vibrate greatly. There is a need.

FIG. 16 shows that three vibration power generators 10 of the present invention are attached to a frame 1 that vibrates in each direction via mounting angles 5, and the mounting holes 14g of the fixed block 14 (see FIG. An example of application is shown. Further, FIG. 17 shows an application example in which the vibration power generation device 10 of the present invention is attached to the frames 7 and 8 so that it can be placed on a vibrating floor. In this way, the vibration power generation device 10 can be installed in any shape to generate electricity so that it can pick up vibrations from each direction, but it needs to be adjusted so that it resonates most easily with respect to vibrations in each direction.

In the vibration power generation device 10 of the present invention, in order to adjust the resonance frequency, the resonance frequency is adjusted by changing the effective length L of the spring portion 15d. The vibration power generation device 10 is installed on the vibrating part, and while observing the amplitude of the vibration unit 11, the effective length L of the spring part is changed to find the point where the amplitude is maximum, that is, the resonance point, and the leaf spring is turned off at that position. The holding block 17 is tightened and fixed to the fixed block 14 with the fixing screw 18.

The most important point of the vibration power generation device 10 of the present invention is that when the presser block 17 is tightened and fixed, the point where the amplitude is maximum, that is, the resonance point does not change. The reason for this will be explained. Generally, when the guide block 16 is not provided, the upper edge of the presser block 17 serves as the vibration reference point of the leaf spring 15. In order to adjust the effective length L of the spring portion, the leaf spring 15 cannot be moved unless the presser block 17 is loosened. If the effective length L of the spring part is adjusted and the presser block 17 is tightened and fixed to the fixed block 14 at the position of the resonance point, a problem arises in that the resonance point inevitably changes depending on the tightening condition of the fulcrum part.

In the present invention, in order to solve the above problem, the guide block 16 is provided so that the tightening condition of the vibration reference point does not change, and the leaf spring 15 is inserted into the slit hole 16a so as to be able to slide smoothly without play. The reason why the resonance point does not change even if the plate spring 15 is loosened will be explained. A portion of the spring portion 15d of the leaf spring 15 is inserted into the slit hole 16a of the guide block 16 without any play, and even if the leaf spring fixing screw 18 is loosened to remove the tightening of the presser block 17, the spring will not tighten. The portion 15d is firmly held by the slit hole 16a, and the effective length L of the spring portion above the chamfered portion 16ab of the guide block 16, which is the vibration reference point, does not change unless the leaf spring 15 is moved in the longitudinal direction. That is, the tightening of the presser block 17 serves only to hold the leaf spring 15 so that it does not move in the longitudinal direction during operation.

In the vibration power generation device 10 of the present invention, a method of changing the effective length L of the spring portion will be explained. As described above, when adjusting the resonant frequency by changing the spring effective length L of the spring section 15d, it is necessary to make the adjustment while the vibration unit 11 is actually vibrating, and adjustment is not easy. Therefore, in the present invention, an adjustment jig is used for adjustment. The adjustment jig will be explained with reference to FIGS. 8 to 10.

The adjustment jig 40 basically consists of a cylindrical cylinder 42 through which a cylinder opening hole 42e with a circular cross section passes through, and a cylindrical piston 41 that moves directly in the axial direction within the cylinder opening hole 42e. (See Figure 9). At the tip of the cylinder 42, a mounting arm 42b branches to both sides, and a mounting hole 42c is provided at each tip. Note that one of the two mounting holes 42c may be a circular hole, and the other may be a horizontally elongated oval hole. Further, two disk-shaped flanges 42a, 42a are provided on the outer periphery of the body of the cylinder 42, with a flange gap 42d spaced apart from each other such that a finger can be hung thereon.

On the other hand, the piston 41 has two guide ring parts 41e disposed at intervals on its cylindrical outer circumference, which loosely fit into the cylinder opening hole 42e and guide the movement of the piston 41 in the longitudinal direction of the axis. A ring portion 41a having an open space 41b large enough to fit a thumb is integrally provided at the front end. Furthermore, a connecting pin 45 is disposed in the cavity 41f of the distal end and is fixed with a cap 43 so as not to come off (see FIG. 10). , the tip block 44 is attached to the tip of the connecting pin 45 by screwing or the like. The tip block 44 has a cylindrical engagement protrusion 44a standing upright on its flat surface, and can be inserted and fitted into the adjustment jig engagement hole 15a at the lower end of the leaf spring 15. And, it can rotate 360 degrees in the direction around the axis together with the connecting pin 45.

Next, the adjustment method using the adjustment jig 40 will be explained with reference to FIGS. 11 to 13. When attaching the adjustment jig 40 to the vibration power generation device 10, insert the engagement protrusion 44a of the tip block 44 of the adjustment jig 40 into the adjustment jig engagement hole 15a of the leaf spring 15 so as to face each other (see FIGS. 3 and see FIGS. 8 to 10). Next, the ring portion 41a is pulled in the longitudinal direction of the cylinder 42 to align the mounting hole 42c with the adjustment jig mounting hole 14d of the fixed block 14 (see FIG. 11). Furthermore, in this state, the cylindrical engaging portions 48a bent in a U-shape at both ends of the jig fixing pin 48 are passed through the mounting hole 42c and inserted into the adjustment jig mounting hole 14d to adjust the adjustment jig 40. Install it on the jig mounting surface 14f. In this state, the positions of the adjustment jig 40 and the vibration power generation device 10 are determined. Note that the adjustment jig mounting hole 14d may be female threaded, and instead of the jig fixing pin 48, a bolt or the like may be used to tighten the adjustment jig mounting surface 14f. Further, instead of the adjustment jig attachment hole 14d, a cylindrical pin may be provided protruding from the adjustment jig attachment surface 14f and engaged so as to hook into the attachment hole 42c.

The method of adjusting the resonant frequency by changing the effective length L of the spring section is to loosen the plate spring fixing screw 18 so that the plate spring 15 of the vibrating vibration unit 11 can move up and down in FIG. Loosen the pressure. When adjusting the spring part effective length L1 when the adjustment jig 40 is installed as shown in FIG. 12, pull the ring part 41a in the direction of the arrow while checking the amplitude of the vibration unit 11 to move the piston 41. . As shown in FIG. 13, the amplitude of the vibration unit 11 becomes maximum when the spring part effective length L2 is reached, and after being matched to the resonant frequency, the plate spring fixing screw 18 is used to tighten and press the presser block 17 against the plate spring 15 to fix it. Thereafter, the jig fixing pin 48 is pulled out and the adjustment jig 40 is removed.

Even after the adjustment jig 40 is removed, the vibration unit 11 continues to vibrate while resonating with the chamfered portion 16ab serving as the vibration base as the base point. The presser block 17 only presses the leaf spring 15 so that the effective length L2 of the spring portion does not change vertically, and the resonance point does not change due to pressing, and the chamfered portion 16ab, which is the vibration reference point, does not change. This has the advantage that adjustment can be made easily regardless of the tightness of the presser block 17.

By removing the adjustment jig 40 after adjustment, the vibration unit 11 during vibration can be a unit with a simple configuration compared to other types of vibration power generation devices such as Patent Document 1, which have an adjustment mechanism inside the vibration power generation device. This also has the advantage that problems such as damage to parts, wear, and changes in resonance points due to vibration of the vibrating part are less likely to occur. Furthermore, the vibration power generation device has a very simple configuration, which has the advantage of eliminating the problems of increasing the size of the device and increasing manufacturing costs. Particularly, when a plurality of vibration power generation devices 10 are arranged and used, the manufacturing cost is reduced, which is a very big advantage.

FIG. 6 shows a first modification of the embodiment of the present invention. In the embodiment described in FIGS. 2 to 5, the guide block 16 supporting the leaf spring 15 has a slit in a part thereof with a slit groove width T and a slit width W corresponding to the plate thickness t and width B of the leaf spring 15. Although the configuration has been described as having the hole 16a, there is a problem in that machining the slit hole 16a with high precision requires machining time and machining cost. Therefore, in a first modification of the present invention, the guide block 16 is divided at the slit hole 16a portion.

A guide block base 33 is fixed to the upper surface 14a of the fixed block 14 with two block fixing screws 19. A recess 33b with a step height Y and a step width X is provided on one surface of the guide block base 33, respectively, corresponding to the plate thickness t and width B of the leaf spring 15, and the relationship between Y, t, X, and B is as follows. This is the equation (b) of the above-mentioned number 1. Further, a guide block presser 34 is disposed opposite the recess 33b and is attached to the mounting surface 33a with a guide block screw 35, and the slit portion formed after assembly becomes a slit hole with dimensions of groove width Y and width X. Further, a small rounded chamfer 33bb is provided on the ridgeline of the upper surface of the recess 33b. Furthermore, a small rounded chamfer 34ab is provided on the upper surface ridgeline of the guide block presser 34 in correspondence with the chamfer 33bb.

The leaf spring 15 is inserted from above into a slit portion having a step height Y and a step width X formed by the recess 33b and the guide block retainer 34, and is attached to the fixing block 14 with the leaf spring fixing screw 18 via the retainer block 17. Fixed. Note that the guide block base 33 is fixed so that the surface of the recess 33b is adjusted to be flush with the mounting surface 14c of the fixed block 14.

As described above, in the first modified example of the present invention, by dividing the guide block base 33 and the guide block presser 34, only the step machining of the recess 33 needs to be performed with high precision, and the leaf spring 15 can be This has the effect that a guide block that guides the user can achieve.

FIG. 7 shows a second modification of the embodiment of the present invention. In this modification, the fixed block 14 and guide block base 33 shown in FIG. 6 are integrated to form a fixed block 36. Furthermore, the stepped portion of the recessed portion 33b of the first modification has a structure in which two spacers 37 are provided on both sides, and the block presser 34 is fixed from the opposite side with the guide block screw 35 with the spacer 37 sandwiched between the fixed block 36. It becomes.

A convexly protruding guide portion 36f is provided in a part of the upper part of the fixed block 36, and a small rounded chamfer 36gb is formed on the ridgeline at the upper end of the mounting surface 36g. This mounting surface 36g is a wide integral surface that is the same as the mounting surface 36c, which is the mounting surface of the leaf spring 15. Furthermore, the spacer 37 is a thin plate having a spacer thickness Z, and the relationship between Z and t is expressed by equation (c) of Equation 1 above. To assemble, place the spacer 37 on both sides with a gap D between the mating surfaces 34a and tighten the block holder 34 from the opposite side with the guide block screw 35.The slit formed after assembly is a slit with dimensions of groove width Z and width D. It becomes a hole. Note that the relationship between D and B is expressed by equation (d) of Equation 1 above.

In this way, in the second modification of the present invention, unlike the first modification, the step machining of the recess 33 is not required, and only the spacer thickness Z of the spacer 37 is reduced relative to the thickness t of the leaf spring 15. In addition to being easy to manage, the mounting surface 36g is on the same surface as the mounting surface 36c, which has the advantage of making processing very easy. Further, the guide block base 33 is also unnecessary, and the configuration becomes very simple. In particular, if changing the effective length L of the spring part is not enough to adjust the resonance frequency, it is necessary to change the thickness t of the leaf spring 15, and in this case, it is necessary to change the thickness t of the leaf spring 15. In this case, it is necessary to change the thickness t of the leaf spring 15. Simply preparing 37 has the effect of being able to respond flexibly. Note that although the guide portion 36f has been described as being integrated with the fixed block 36, it may be divided as a separate body similarly to the guide block base 33.

The adjustment jig 40 shown in FIGS. 8 to 10 has a structure in which the piston 41 and the cylinder 42 move by direct motion, but when adjusting the resonance frequency, it may be advantageous if the jig can be moved by fine adjustment. FIG. 14 shows another adjustment jig 50 for adjusting the resonance frequency in the vibration power generation device 10 of the present invention. It consists of a cylindrical cylinder 52 through which a circular cylinder opening 52e passes, and a cylindrical piston 51 that moves in the axial direction within the cylinder opening 52e.

A male threaded portion 51a is provided on a part of the outer circumference of the piston 51, and an operating knob 53 having a nut portion 53a on the inner surface is engaged, and by rotating the operating knob 53, the cylinder 51 is moved by the thrust of the screw into the guide ring portion. 51e to move in the axial direction. With this structure, when the operation knob 53 rotates once, the cylinder 51 only moves by the pitch of the screw, allowing fine adjustment. Note that the operating knob 53 is held by a screw case 54 and a screw cap 55, with a portion thereof being exposed.

The adjustment jig 50 in FIG. 14 has an advantage in that it can be finely adjusted by only moving by the pitch of the screw, but it is not suitable for moving the effective length L of the spring portion by a large amount. Therefore, an adjustment jig 60 that incorporates the advantages of the adjustment jig 40 and the adjustment jig 50 is shown in FIG. 15 and will be described. The adjustment jig 60 is composed of a gear case 62 having a cylindrical cylinder body 62a through which a circular cylinder opening hole 62e passes, and a cylindrical rack piston 61 that moves in the axial direction within the cylinder opening hole 62e. There is.

A rack portion 61f is formed at one end of the rack piston 61, and a cylindrical piston portion 61a is formed at the other end.A guide ring portion 61e is provided on the outer periphery of the piston portion 61a, and a circular cylinder opening hole 62e is provided with a guide ring portion 61e. It is guided and movable in the axial direction. In addition, the rack portion 61f is connected to a gear assembly buried in the gear case 62. 70, is connected to two idle gears 72A and 72B, and is reduced in speed and connected to a knob gear 73 as the final stage.

In addition, the gear assembly. Each of the gears 70 is rotatably supported by pins 74 and 75, and its ends are supported and held by bearings 62g and 62h of the gear case 62 and bearings (not shown) of the side cover 63. There is. A portion of the operation knob portion 73b is exposed through the opening hole 64a of the upper lid 64, so that the operation knob portion 73b can be rotated. Further, a cylinder flange portion 62d is formed at the end of the cylinder body portion 62a, and is fixed to a mounting flange portion 65d of the mounting holder 65.

When moving the piston 61 in the axial direction using the adjustment jig 60, the operation knob portion 73b is rotated. The gear Assy. With a reduction ratio of 70, the rack portion 61f moves in the axial direction and the rack piston 61 is driven. Gear Assy. Since the reduction ratio 70 can be set arbitrarily, it can be set to be smaller than the amount of movement of the adjustment jig 40 and larger than the amount of movement of the adjustment jig 50, and an extremely easy-to-use adjustment jig can be realized.

As another embodiment, as shown in FIG. 18, the vibration power generation device 80 has a combination in which the vibration unit 81 is a permanent magnet 92 fixed to a holder 91, and the fixed unit 82 is a coil 94 wound around a bobbin 93. You can also replace it with FIG. 18 shows an example in which a permanent magnet 92 held by a holder 91 is used as a vibrating unit 81, and a coil 94 wound around a bobbin 93 is placed opposite to each other so as to sandwich the permanent magnet 92, and is used as a fixed unit 82. In such a configuration, since vibration is not applied to the wiring portion at the end of the coil 94, there is no fear of wire breakage, etc., and there is an advantage that reliability is further improved.

Although the embodiments of the present invention and the adjustment jig during use have been described in detail above, the embodiments are not limited to these, and various other configurations may be made without departing from the gist of the present invention. Of course it is possible.

1: Frame 5: Mounting angle 6: Mounting screws 7, 8: Frame 10, 80: Vibration power generator 11, 81: Vibration unit 12, 82: Fixing unit 13: Holding frame 13a: Box-shaped structure section 13b: End section 13c : First bridging member 13d : Second bridging member 14 : Fixed block 14a : Top surface 14b : Mounting female threaded part 14c : Mounting surface 14d : Adjustment jig mounting hole 14e : Side surface 14f : Adjustment jig mounting surface 14g : Mounting hole 15: Leaf spring 15a: Adjustment jig engagement hole 15b: Opening hole 15c: Arm portion 15d: Spring portion 15e: Mounting portion 16: Guide block 16a: Slit hole 16ab: Chamfered portion 16b: Slit guide surface 17: Presser block 17a: Holding surface portion 18: Leaf spring fixing screw 19: Block fixing screw 20: Vibration power generation portion 21, 91: Holder 22, 92: Permanent magnet 26, 93: Bobbin 26a: End portion 27, 94: Coil 28: Leaf spring mounting Block 29: Fixed screw 31: Fixed unit mounting screw 33: Guide block base 33a: Mounting surface 33b: Recessed portion 33bb: Chamfered portion 34: Guide block retainer 34a: Matching surface 34ab: Chamfered portion 35: Guide block screw 36: Fixed Block 36c: Mounting surface 36f: Guide section 36g: Mounting surface 36gb: Chamfered section 37: Spacers 40, 50, 60: Adjustment jig 41: Piston 41a: Ring section 41b: Opening gap 41e: Guide ring section 41f: Cavity section 42: Cylinder 42a: Flange 42b: Mounting arm 42c: Mounting hole 42d: Flange gap 42e: Cylinder opening hole 43: Cap 44: Tip block 44a: Engaging protrusion 45: Connecting pin 48: Jig fixing pin 51: Screw piston 51a : Male thread part 51e : Guide ring part 52 : Cylinder 52b : Mounting arm part 52c : Mounting hole 52e : Cylinder opening hole 53 : Operation knob 53a : Nut part 54 : Screw case 55 : Screw cap 56 : Cap 61 : Rack piston 61a : Piston part 61e : Guide ring part 61f : Rack part 62 : Gear case 62a : Cylinder body part 62d : Cylinder flange part 62e : Cylinder opening hole 62g : Bearing part 62h : Bearing part 63 : Side cover 64 : Upper cover 64a : Opening hole 65 : Mounting holder 65b : Mounting arm part 65c : Mounting hole 65d : Mounting flange part 70 : Gear assembly.
71: Rack drive gears 72A, 72B: Idle gear 72a: Small gear 72b: Large gear 73: Knob gear 73a: Gear portion 73b: Operation knob portions 74, 75: Pin t: Plate thickness B: Width D: Spacing L, L1, L2: Effective length of spring T: Slit groove width W: Slit width X: Step width Y: Step height Z: Spacer plate thickness

Claims (4)

It is equipped with a vibration unit and a pair of fixed units provided so as to face the vibration unit, and when the vibration unit vibrates, a permanent magnet and a coil facing each other undergo relative motion to induce induction in the coil. In a vibration power generation device that generates an electric current,
The vibration unit;
a pair of the fixed units held by a holding frame;
a fixing block that fixes the holding frame;
a leaf spring, one end of which is fixed to the end of the vibration unit, and the other end of which is screwed to the fixed block with a leaf spring fixing screw via a presser block;
a guide block disposed at a position between the vibration unit and the presser block in the longitudinal direction of the leaf spring, and having a slit hole provided in the center;
The leaf spring is inserted into the slit hole of the guide block, and further, the other end extends from the presser block in a direction opposite to the vibration unit, and the vibration unit is connected to a vibration generating section. A vibration power generation device characterized in that it is fixed movably in the length direction so as to resonate with the vibration of. 2. The vibration power generation device according to claim 1, wherein the guide block is composed of at least two parts surrounding the slit hole. Inserting the engagement protrusion of the adjustment jig into the adjustment jig engagement hole provided near the other end of the leaf spring, so that the amplitude of the vibration unit matches a resonance frequency that is maximum, The effective length L of the spring portion of the leaf spring is adjusted, and the leaf spring is screwed and fixed to the fixing block by the leaf spring fixing screw via the presser block. The vibration power generation device according to item 2. The adjustment jig includes a cylindrical cylinder having a cylinder opening hole with a circular cross section passing through the central axis, and a cylindrical piston that moves directly in the axial direction within the cylinder opening hole. A claim characterized in that the vibration of the vibration unit can be adjusted to a resonant frequency by3The vibration power generation device described in .