Metal Vibration

Abstract

To provide metal vibration which performs shimmy fall and causes a black bass which is less active and has no motivation to eat on impulse.SOLUTION: A resistance receiving member 4 which forms a recess to a back side together with a weight 3 is fitted to the weight 3 disposed on a belly of a lure body 2 and receives water resistance when the resistance receiving member 4 heads for a water surface, so that the lure oscillates left and right even when it submerges in the water and the metal vibration 1 performs shimmy fall. The resistance receiving member 4 has a material lighter than the weight 3, so that the center of gravity of the lure whose lure body 2 designed to fall to left and right easily does not fall too much even with the resistance receiving member 4 fitted to the weight 3. Also, the resistance receiving member 4 is made transparent and the resistance receiving member 4 is made less salient, so that the lure does not differ in impression of the outward appearance from the conventional metal vibration.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] This invention relates to metal vibration lures (also called metal vibes), a type of lure used in bass fishing, and in particular to metal vibration lures that sway from side to side as they sink through the water, known in industry terms as a shimmy fall, stimulating black bass into an impulsive feeding. [Background technology]

[0002] One proposed metal vibration lure has two or more holes drilled into the stainless steel plate of the lure body, creating a surface that does not push water when vibrating (see, for example, Patent Document 1). By creating a surface that pushes water and a surface that does not, this metal vibration lure creates more complex waves due to vibration, making it possible to generate waves that are more complex than those generated by conventional metal vibration lures.

[0003] Although it is not a metal vibration lure, a spoon-shaped lure has been proposed that has wings that spread horizontally on its abdomen, which is convex on the opposite side from its back, and that can be stably and slowly sunk toward the intended location (see, for example, Patent Document 2). With this spoon-shaped lure, as the lure sinks in the water, the wings catch the water current flowing toward the water surface, causing it to sway from side to side as it sinks steadily straight down. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3193079 (Paragraph 0007, Figure 1) [Patent Document 2] Utility Model Registration No. 3191129 (paragraphs 0009, 0024, Figure 4) Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the metal vibration lure disclosed in Patent Document 1, two or more holes are drilled in the lure body, which allows too much water flow to escape, reducing water resistance and making it difficult for the lure to vibrate.

[0006] In particular, when the lure sinks in the water, the metal vibration described in Patent Document 1 has two or more holes in the lure body, which reduces water resistance, and also has a large weight attached to the front part of the lure body when viewed from the direction of movement, which would be the head of a fish, so it sinks head-down without vibrating.

[0007] Therefore, the metal vibration of Patent Document 1, like existing metal vibrations, only vibrates when the lure is pulled up.

[0008] The spoon-shaped lure disclosed in Patent Document 2 has wings that extend horizontally from its abdomen, making the lure's shape significantly different from that of a fish. Furthermore, the spoon-shaped lure disclosed in Patent Document 2 has wings that swing back and forth as it sinks in response to water currents, and this movement also differs significantly from that of a fish. Because the spoon-shaped lure disclosed in Patent Document 2 has a shape that differs significantly from that of a fish, and its movement also differs significantly from that of a fish, it is unlikely to be accepted by anglers who are resistant to lures with novel shapes and movements.

[0009] Therefore, the object of this invention is to solve the above-mentioned problems and provide a metal vibration lure that sways from side to side as it sinks in the water, or what is known in the industry as a shimmy fall, and that provokes black bass into an impulsive feeding. [Means for solving the problem]

[0010] In order to solve the above problem, the invention of claim 1 relates to a metal vibration lure that comprises a plate-shaped lure body and a weight placed on the belly of the lure body, which becomes the bottom side when the lure body sinks underwater. A resistance-receiving member is attached to the weight placed on the belly of the lure body, and is integrated with the weight and forms a recess toward the dorsal side, opposite the belly side.

[0011] In the invention according to claim 2, the resistance receiving member is made of a material lighter than the weight.

[0012] In the invention according to claim 3, the resistance receiving member is made of resin. [Effects of the Invention]

[0013] According to the invention of claim 1, a resistance-receiving member is attached to the weight located on the abdomen of the lure body, and is integral with the weight located on the abdomen of the lure body, forming a depression toward the dorsal side opposite the abdomen. This resistance-receiving member can absorb the water resistance toward the water surface as the lure sinks through the water. According to the invention of claim 1, when the resistance-receiving member can no longer withstand the water resistance, a force is generated that tilts the lure body. This force tilting the lure body and the force raising the lure body push against each other, causing the lure body to repeatedly tilt back and forth, causing the lure to sway back and forth. Therefore, according to the invention of claim 1, the lure sways back and forth even as it sinks through the water, which is known in industry as a shimmy fall, stimulating black bass to impulsively eat.

[0014] According to the invention of claim 2, the resistance receiving member is made of a material lighter than the sinker, so even when the resistance receiving member is attached to the sinker, the lure body is designed to easily tip left and right, and the center of gravity of the lure does not drop too much. Therefore, according to the invention of claim 2, even when the resistance receiving member is attached to the sinker, a clear shimmy fall can be achieved.

[0015] According to the invention of claim 3, the resistance receiving member is made of resin, which makes it much lighter than a lead or tungsten sinker. Therefore, according to the invention of claim 3, even if the resistance receiving member is attached to the sinker, the lure body is designed to easily tip left and right, and the center of gravity of the lure is less likely to drop. Therefore, according to the invention of claim 3, even if the resistance receiving member is attached to the sinker, a more pronounced shimmy fall can be achieved.

[0016] Furthermore, according to the invention of claim 3, the resistance receiving member is made of resin, which is easy to mold into the desired shape, and is therefore easier to mold into the desired shape than a resistance receiving member made of metal such as aluminum. Therefore, according to the invention of claim 3, the resistance receiving member can be made uniformly shaped on both sides, so the water resistance received by the resistance receiving member can be made equal between the left and right sides. Therefore, according to the invention of claim 3, the precision of the resistance receiving member can be improved, allowing for a more pronounced shimmy fall.

[0017] Furthermore, according to the invention of claim 3, the resistance receiving member is made of resin, which makes it harder than a resistance receiving member made of metal such as aluminum. Therefore, according to the invention of claim 3, the resistance receiving member is less likely to deform even if the lure is used repeatedly. Therefore, according to the invention of claim 3, the durability of the resistance receiving member is increased, making it possible to perform shimmy falls any number of times.

[0018] In addition, according to the invention of claim 3, since the resistance receiving member is made of resin, it can be made transparent or colored. Therefore, according to the invention of claim 3, if the resistance receiving member is made transparent, it can be made less noticeable and can give the impression of being no different from a conventional metal vibration. Also, according to the invention of claim 3, if the resistance receiving member is colored, it can be made to look like one with the weight, making it less likely that the resistance receiving member is attached to the weight. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is an exploded perspective view of the metal vibration according to the embodiment. [Figure 2] FIG. 1(a) is a side view of the metal vibration according to the embodiment in an installed state, and FIG. 1(b) is a view of the metal vibration according to the embodiment as seen from the abdominal side. [Figure 3] 1A and 1B are explanatory diagrams showing the mechanism by which a metal vibration according to an embodiment shimmies and falls. (a) is an explanatory diagram of the posture immediately after entering the water, and (b) is an explanatory diagram of the mechanism by which the metal vibration falls. (c) is an explanatory diagram of the mechanism by which the metal vibration gets up even if it falls, and (d) is an explanatory diagram of the mechanism by which the metal vibration falls to the side opposite to the side from which it fell. (e) is an explanatory diagram of the mechanism by which the metal vibration gets up even if it falls to the opposite side, and (f) is an explanatory diagram of the mechanism by which the metal vibration falls repeatedly from side to side. [Figure 4] 1A and 1B are explanatory diagrams showing the behavior of a metal vibration device according to an embodiment as it sinks in water. (a) is an explanatory diagram of the movement immediately after entering the water, (b) is an explanatory diagram of the movement of the device falling over with its belly exposed, (c) is an explanatory diagram of the movement of the device falling over with its back exposed, and (d) is an explanatory diagram of the movement of the device repeatedly falling over with its belly exposed. [Figure 5] 10(a) is a side view of a metal vibration according to another embodiment, and FIG. 10(b) is a view of the metal vibration according to another embodiment as seen from the abdominal side. DETAILED DESCRIPTION OF THE INVENTION

[0020] First, let me briefly explain the basis for the creation of this invention. The applicant is a fishing tackle manufacturer founded in December 2016 by Kotaro Kawamura, a professional bass fishing angler, who went independent to create lures that he truly wanted to use. The applicant develops bass fishing-related products, such as lures for black bass and bags specifically for bass fishing.

[0021] The applicant hopes that "through the BOTTOMUP (registered trademark no. 5935655) products, it will be possible to catch more black bass, and that as many people as possible will be able to experience the appeal of bass fishing," and so he hopes to provide the "fun of fishing" by creating lures that are effective at catching fish.

[0022] For his previous invention (Patent No. 7082779), the applicant developed a spinnerbait (product name "Beeble") that replicates the movement of a fish, swaying its body from side to side, with a skirt that sways in sync with the movement. This spinnerbait is popular with many anglers, and was selected as the most popular new bass fishing lure of 2019 in the "Tackle of the Year" reader poll in the magazine "Lure Magazine" (Naigai Publishing). This latest invention was also created after repeated testing of its movement in water, based on the applicant's strong commitment and belief that "if we're going to make something, it has to be something that has never been done before, something that will actually catch bass."

[0023] The inventor is a member of the technical staff supporting Kotaro Kawamura, and his goal is to create the best lure that professional angler Kotaro Kawamura desires. The inventor is skilled at reproducing the intended movement of lures, and has been working on developing a metal vibration that induces impulse bites (also known as reflex bites or reaction bites) to realize professional angler Kotaro Kawamura's desire to provide the "fun of catching" even when black bass activity is low.

[0024] To explain the latest developments in bass fishing, in addition to the recent boom in outdoor activities, bass fishing has experienced a resurgence as a leisure activity that allows people to avoid crowds amid the COVID-19 pandemic. To ensure that the bass fishing boom doesn't just prove to be a passing fad, professional angler Kawamura Kotaro felt that the "fun of fishing" had to be provided not only when black bass were active and easy to catch, but also when they were less active and less likely to chase bait, such as during the cold winter water temperatures, on days when the water temperature dropped sharply due to radiation cooling, or on days when the water was muddy after heavy rain.

[0025] The inventor was thinking about what factors cause black bass, which are usually inactive and unmotivated, to eat impulsively when he heard Kawamura Kotaro say that "they reflexively bite anything that falls from above," and it stuck with him.

[0026] In addition, the inventor thought that metal vibrations attract fish by vibrating rapidly when the fishing rod is jerked vertically, causing the lure to jump up (also known as lift). In order to increase the chances of a bite (a bite is a feeling you get in your hand, such as when the float or fishing line moves when a fish bites the bait or lure), he wanted the lure to move even as it sinks underwater.

[0027] Thus, the inventor created the perfect lure for professional angler Kawamura Mitsuhiro: a metal vibration lure that has the same initial agility as conventional metal vibration lures when lifted, but also moves as it sinks in the water to attract fish.

[0028] The inventor then discovered that if the lure could be made to fall like a roly-poly doll when it falls over as it sinks in the water, but then rise up and return to its original position, it could be made to shimmy fall, and this led to the creation of this invention.

[0029] Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. Fig. 1 is an exploded perspective view of a metal vibration lure 1 according to an embodiment. As shown in Fig. 1, the metal vibration lure 1 generally comprises a plate-shaped lure body 2 and a sinker 3 attached to the lure body 2 so as to be integral with the lure body 2. The metal vibration lure 1 according to the embodiment is configured to include a resistance receiving member 4 on the sinker 3, and in this case, the frame-shaped resistance receiving member 4 is placed over the sinker 3 from the side that faces the bottom of the water as the lure sinks in the water, so that the resistance receiving member 4 is integral with the sinker 3.

[0030] The lure body 2 is a thin plate, here made of metal, shaped like a fish, and decorated with a shiny, glossy hologram. The fish-shaped lure body 2 has a hole (called a line eye 21) on the back for tying a fishing line, and holes (called hook eyes 22, 22) on the belly and tail for attaching a fishing hook.

[0031] Sinker 3 is a weight attached to the lure to make it sink, and in this case is a lump of lead. Sinker 3 is attached to the abdomen of lure body 2, which is shaped like a fish, from the head to the abdomen of lure body 2, thickening the abdomen to form one with lure body 2, and is designed so that the center of gravity is at the gill position of lure body 2 (the joint between the head and body, where the vertical lines are crowded together in Figure 1), so that the lure can easily sway from side to side as it sinks in the water.

[0032] Resistance receiving member 4 is a component that, by being integrated with sinker 3, receives the water resistance toward the water surface as the lure sinks, and to make it easier to receive water resistance, it is integrated with sinker 3 and forms a recess toward the back side of lure body 2. Resistance receiving member 4 is made of a material lighter than sinker 3, and in this case is made of resin, more specifically, a thermoplastic resin (also known as ABS resin) made by copolymerizing transparent acrylonitrile, butadiene, and styrene, and has been named an ABS receiver by the applicant.

[0033] Fig. 2(a) is a side view of the metal vibration lure according to the embodiment in a set state. As shown in Fig. 2, the metal vibration lure 1 according to the embodiment is configured to have a lure body 2, a sinker 3, and a resistance receiving member 4. The metal vibration lure 1 according to the embodiment is used by tying a fishing line to the line eye 21 via a snap S, and attaching fishhooks H, H to the hook eyes 22, 22.

[0034] 2(b) is a view of the metal vibration lure according to the embodiment as seen from the ventral side. As shown in FIG. 2(b), in the metal vibration lure 1 according to the embodiment, the resistance receiving member 4 is integrated with the weight 3, forming a recess toward the dorsal side of the lure body 2.

[0035] In the metal vibration 1 configured in this manner, the resistance receiving member 4 is integrated with the weight 3 and forms a recess toward the back side of the lure body 2, so that this recess can receive the water resistance toward the water surface that the lure encounters as it sinks in the water.

[0036] Furthermore, in the metal vibration 1 configured in this manner, the resistance receiving member 4 is made of resin that is lighter than the sinker 3, so even when the resistance receiving member 4 is attached to the sinker 3, the lure body 2 is designed to easily tip left and right, and the center of gravity of the lure does not drop significantly.

[0037] Furthermore, in the metal vibration 1 configured in this manner, the resistance receiving member 4 can be easily molded into a desired shape, and since it is made of hard resin, the resistance receiving member 4 can be made into an even shape on both sides and is less likely to deform.

[0038] In addition, in the metal vibration 1 configured in this manner, since the resistance receiving member 4 is transparent, the resistance receiving member 4 is not noticeable, and the appearance gives the impression of being no different from a conventional metal vibration.

[0039] Figure 3 is an explanatory diagram showing the mechanism by which the metal vibration lure 1 according to the embodiment shimmies and falls, and (a) of Figure 3 is an explanatory diagram of the posture immediately after it enters the water. As shown in (a) of Figure 3, in the metal vibration lure 1 according to the embodiment, the sinker 3 is attached to the fish-shaped lure body 2 from the head to the abdomen, making the abdomen thicker, so that it starts to sink in a forward-leaning posture with its head down and tail up, with its abdomen facing the bottom of the water.

[0040] Figure 3(b) is an explanatory diagram of the mechanism by which the metal vibration lure 1 falls. As shown in Figure 3(b), in the metal vibration lure 1 according to the embodiment, the resistance receiving member 4 is integrated with the sinker 3 and forms a depression toward the back side of the lure body 2, so that the resistance receiving member 4 receives the water resistance toward the water surface as the lure sinks in the water, as indicated by the dashed arrow. In the metal vibration lure 1 according to the embodiment, when the resistance receiving member 4 can no longer withstand the water resistance, the balance between the left and right is lost, and a force is generated that causes the lure body 2 to fall to either the left or right, and in this case the lure body 2 begins to fall to the left, as indicated by the arrow.

[0041] Fig. 3(c) is an explanatory diagram of the mechanism by which the metal vibration 1 stands up even when it falls. As shown in Fig. 3(c), in the metal vibration 1 according to the embodiment, when the lure body 2 starts to fall to the left, the water resistance (also called the raising force) that the left face of the lure body 2 receives toward the water surface, as indicated by the dashed arrow, increases. Then, in the metal vibration 1 according to the embodiment, when the lure body 2 falls to a certain extent, the raising force exceeds the falling force, and the lure body 2 starts to stand up as indicated by the arrow.

[0042] FIG. 3(d) is an explanatory diagram of the mechanism by which the metal vibration 1 falls to the side opposite to the side to which it was falling. As shown in FIG. 3(d), in the metal vibration 1 according to the embodiment, the lure body 2 begins to fall to the side opposite to the side to which it was falling, in this case to the right, due to the momentum of rising. Here, in the metal vibration 1 according to the embodiment, the resistance receiving member 4 is integrated with the sinker 3 and forms a depression toward the dorsal side of the lure body 2. Therefore, when the lure body 2 begins to fall to the right, the resistance of the water toward the water surface is concentrated on the left side of the resistance receiving member 4. Therefore, in the metal vibration 1 according to the embodiment, when the lure body 2 begins to fall to the right, the resistance of the water toward the water surface is concentrated on the left side of the resistance receiving member 4, causing the lure body 2 to fall further to the right, as shown by the arrow.

[0043] Fig. 3(e) is an explanatory diagram of the mechanism by which the metal vibration 1 stands up even when it falls to the opposite side. As shown in Fig. 3(e), in the metal vibration 1 according to the embodiment, the lure body 2 exceeds the momentum of rising and begins to fall to the right, but when the lure body 2 falls to a certain extent, the water resistance (also called the force of rising) acting on the right side of the lure body 2, as indicated by the dashed arrow, toward the water surface exceeds the force of falling, and the lure body 2 begins to stand up as indicated by the arrow.

[0044] 3(f) is an explanatory diagram of the mechanism by which the metal vibration 1 repeatedly falls from side to side. In the metal vibration 1 according to the embodiment, the forces that tilt the lure body 2 and the forces that raise it up push against each other, and once the lure body 2 falls, it not only stands up and returns to its original position, but also falls to the opposite side from the fallen side with more force than the force that raised it up, so it repeatedly falls from side to side.

[0045] In this way, the metal vibration lure 1 according to the embodiment has the lure body 2 repeatedly falling from side to side as it sinks in the water, causing the lure to sway from side to side and perform a shimmy fall. Therefore, the metal vibration lure 1 according to the embodiment moves not only when it is lifted but also as it sinks in the water, attracting fish, creating many bite opportunities. Furthermore, the metal vibration lure 1 according to the embodiment moves even as it sinks in the water (also called the fall), attracting fish, so it may even bite on the first fall.

[0046] Figure 4 is an explanatory diagram showing the behavior of the metal vibration lure 1 according to the embodiment as it sinks in water, and Figure 4(a) explains the movement immediately after it enters the water. As shown in Figure 4(a), in the metal vibration lure 1 according to the embodiment, the sinker 3 is attached to the fish-shaped lure body 2 from the head to the abdomen, making the abdomen thicker, so that it starts to sink with its head down, tail up, leaning forward, and its abdomen facing the bottom of the water.

[0047] Fig. 4(b) is an explanatory diagram of the movement of the lure body 2 tipping over with its belly exposed. As shown in Fig. 4(b), in the metal vibration 1 according to the embodiment, when the resistance receiving member 4 can no longer withstand the resistance of the water, the balance between the left and right sides is lost, a force is generated that tips the lure body 2 over, and the lure body 2 tipping over with its belly exposed.

[0048] Fig. 4(c) is an explanatory diagram of the movement of falling with its back turned. As shown in Fig. 4(c), in the metal vibration 1 according to the embodiment, when it falls until its belly is turned, the force that raises the lure body 2 exceeds the force that causes it to fall, and after rising, it falls with its back turned to the side opposite to the side it was turned to.

[0049] Fig. 4(d) is an explanatory diagram of the motion of repeatedly falling with its belly exposed. As shown in Fig. 4(d), in the metal vibration 1 according to the embodiment, the forces that push down the lure body 2 and the forces that raise it up push against each other, and once the lure body 2 falls, not only does it rise up and return to its original position, but it also falls to the opposite side from where it fell with more momentum than the force that raised it up, so it repeatedly falls with its belly exposed.

[0050] As described above, the metal vibration lure 1 according to the embodiment repeatedly falls with its belly exposed and its back exposed as it sinks through the water, causing the lure to sway from side to side and shimmy fall. Therefore, the metal vibration lure 1 according to the embodiment can sway from side to side and push water as it sinks through the water. Fish sense changes in water pressure and water currents through their lateral lines, and the metal vibration lure 1 according to the embodiment can appeal to fish by pushing water as it sinks through the water, making it possible to put into practice Mitsuhiro Kawamura's black bass strategy of "reflexively biting on something falling from above," and to induce impulsive feeding in inactive and unmotivated black bass.

[0051] The metal vibration lure 1 according to the embodiment sinks underwater in a forward-leaning position with its head down and tail up, swaying from side to side, just like a small fish fleeing to the bottom of a river or lake (also called the bottom), breathing life into the thin metal plate and encouraging the black bass to eat even more impulsively.

[0052] Furthermore, in the metal vibration lure 1 according to the embodiment, the lure sways from side to side as it sinks in the water, and the lure body 2 reflects sunlight and other light to cause it to blink (called flashing). Therefore, in the metal vibration lure 1 according to the embodiment, the lure flashes as it sinks in the water, breathing a sense of life into the thin metal plate and attracting fish.

[0053] Furthermore, since the metal vibration lure 1 according to the embodiment sinks in the water while swaying from side to side, it does not sink far from the point of impact, unlike a slide fall, which sinks while sliding sideways like a glider. Therefore, the metal vibration lure 1 according to the embodiment sinks around the point of impact, allowing the lure to sink wherever it is aimed.

[0054] In addition, in the metal vibration lure 1 according to the embodiment, the lure sinks in a forward-leaning position with its head down and its tail up, so it is stable in a position with its head facing forward in the direction of travel. Therefore, the metal vibration lure 1 according to the embodiment does not rotate front and back as it sinks.

[0055] Fig. 5(a) is a side view of a metal vibration lure according to another embodiment, and Fig. 5(b) is a view of the metal vibration lure according to another embodiment as seen from the belly side. As shown in Fig. 5, in a metal vibration lure 1' according to another embodiment, instead of the frame-shaped resistance receiving member 4 (see Fig. 1), a wing-shaped resistance receiving member 4' is attached in a V-shape, and the wing-shaped resistance receiving member 4' is integrated with the sinker 3 to form a recess toward the back side of the lure body 2. In the metal vibration lure 1' according to another embodiment, this recess is able to receive the water resistance toward the water surface that the lure encounters as it sinks in the water.

[0056] In the metal vibration 1' according to another embodiment configured in this way, a blade-shaped resistance receiving member 4' is attached instead of the frame-shaped resistance receiving member 4 (see Figure 1), so the volume of the resistance receiving member 4' is smaller than that of the frame-shaped resistance receiving member 4. Therefore, in the metal vibration 1' according to another embodiment, the effect of attaching the resistance receiving member 4' can be reduced, and the initial agility of the lift can be maintained in the same way as conventional metal vibrations.

[0057] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, in the metal vibration lure 1 according to the embodiment, the lure body 2 is described as being made of metal, but it may be made of fiber reinforced plastic (also called FRP).

[0058] Furthermore, in the metal vibration 1 according to the embodiment, the weight 3 is described as being made of lead, but it may also be made of resin tungsten, which is made by molding powdered tungsten with nylon.

[0059] Furthermore, in the metal vibration lure 1 according to the embodiment, the resistance receiving member 4 is described as being made of resin, but it can also be made of hard silicone or hard rubber. If the resistance receiving member 4 is changed from ABS resin to hard silicone or hard rubber, noise can be reduced even when the lure hits the bottom of the water or the hook hits the lure. [Explanation of symbols]

[0060] 1 Metal Vibration 2 Lure body 3 weights 4 Resistance receiving member

Claims

1. In a metal vibration lure, which consists of a plate-shaped lure body and a weight attached to the belly of the lure body, which becomes the bottom side when the lure body sinks in the water, This metal vibration lure is characterized in that it is provided with a resistance receiving member on the abdomen of the lure body, which is integrated with the weight and forms a depression toward the dorsal side opposite to the abdomen side.

2. 2. The metal vibration device according to claim 1, wherein the resistance receiving member is made of a material lighter than the weight.

3. 3. The metal vibration device according to claim 2, wherein the resistance receiving member is made of resin.

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