Pest repellent sound generator

Abstract

To provide a pest repellent sound generating device which can attract the attention of a pest when encountering the pest, preferably make the pest escape, and also repel the pest in the soil by transmitting vibrations in a specific frequency band into the soil. [Solution] The present invention is a component of a device that generates a sound to repel pests, and comprises a handle and a pest repellent sound generating unit attached to the tip of one side of the handle. The pest repellent sound generating unit is made from 0.5mm stainless steel plate formed into an approximately hemispherical shape with ribs on the opening edge, has a hole in the center on the side opposite the opening, and has a folded portion where the outer edge of the rib is folded back in a roll shape. One end of the handle has a screw part for connecting the handle and the pest repellent sound generating unit, and the screw part is equipped with a frequency adjustment member for generating sound in the frequency range of 80 to 130 Hz by striking the pest repellent sound generating unit.

Description

[Technical Field]

[0001] The present invention relates to a tool such as a fire bell or hand bell that makes a sound, and more particularly to a pest repellent sound generator that generates long-lasting sounds and vibrations in a frequency band that warns pests such as bears and moles. [Background technology]

[0002] Since the fall of 2025, bear sightings across the country have been increasing rapidly, including numerous reports of bear attacks on humans. Bears are particularly active in early autumn, when they actively search for food in preparation for hibernation, and are increasingly being spotted in areas close to human settlements and even in urban areas. If you find yourself confronted with a bear, the general strategy is to remain calm and slowly back away without turning your back on the bear, as panicking and running away increases the likelihood of the bear chasing you. Instead of running away, keep your eyes on the bear and back away slowly while speaking quietly to create distance. Another option is to gently place your belongings on the bear's surface to distract it and attract its attention. If you are carrying bear repellent, it is recommended that you use it when a bear approaches.

[0003] Bears are generally timid and may become frightened and run away when they see people, or may attack if you approach them. They are also very attached and will not tolerate anything they perceive as theirs being taken away. Bears have a habit of chasing anything that approaches a human, so if you encounter one, it is best to retreat quietly without provoking it.

[0004] However, if you encounter a bear at close range, such measures may not be possible, resulting in a very dangerous situation. Wild bears are known to be very curious and have a tendency to be interested in things that do not exist in nature. Therefore, it is thought that they will be wary of or interested in mirror-finished metal objects that reflect their own image, or objects that make sounds. Since bears are particularly averse to sounds in the 80 to 130 Hz frequency range, the development of repellents that take these characteristics into consideration is an urgent need.

[0005] Moles also cause serious damage. Their damage includes damaging crop roots, loosening the ground, spoiling the landscape, and secondary damage such as the invasion of rats. Moles are carnivorous and do not eat crops directly, but in the process of digging tunnels, they can cut roots, causing them to wilt and even knock over seedlings. They also eat earthworms, which improve the soil, which can degrade the quality of the soil. To avoid mole damage, there are methods for transmitting sounds and vibrations underground that moles dislike. Moles not only have keen hearing, but also have a high ability to sense vibrations underground, so transmitting not only sound but also vibrations is an important factor in repelling moles.

[0006] In light of this problem of pests, various technologies have been proposed. For example, a technology entitled "Pest Repellent Device" has been disclosed (see Patent Document 1). This technology addresses the problem of providing a pest repellent device that can be easily installed and prevents pests from becoming accustomed to it, and its solution is described as "a pest repellent device characterized by comprising: a plurality of speakers arranged on a predetermined installation line, each emitting sound toward one side of the installation line; and an audio supply unit for supplying each of the plurality of speakers with audio signals that vary over time in at least two parameters selected from volume, delay, and phase, so that adjacent speakers receive different audio signals." The invention described in Patent Document 1 has the problem of requiring electricity, which makes it difficult to secure a power source for outdoor installation, limiting installation locations.

[0007] Additionally, a technology entitled "System" has been disclosed (see Patent Document 2). The problem of this technology is to "provide a system that continuously generates effective alarm sounds while preventing habituation to the sound in order to prevent damage to crops by pests," and the solution is to "utilize a voice generation AI to combine various sounds available on the Internet, learn alarm sounds that pests dislike, and continuously generate new ones, thereby preventing habituation to the sound and continuously repelling pests." However, the invention described in Patent Document 2 has problems such as being unable to respond to attacks during the AI's learning period, and, like Patent Document 1, requiring an advanced system including a power supply and computer, which makes its implementation a significant financial burden.

[0008] Also, a technology entitled "Mole Repellent Device" has been disclosed (see Patent Document 3). The problem of this technology is to "prevent moles from becoming accustomed to the sound and vibration and maintain a good repelling effect for a long period of time," and the solution is "a mole repellent device 1 for repelling moles, comprising a square pipe 2 at least partially buried underground, a weight 7 disposed within the square pipe 2, and a motor 11 for irregularly rotating the weight 7 via a spring 8, and the weight 7, which rotates irregularly in response to motor drive, generates irregular sounds and / or vibrations when it comes into contact with the inner surface of the square pipe 2, thereby repelling moles." However, the invention described in Patent Document 3 has a power supply device necessary for driving the motor to irregularly rotate the weight that comes into contact with the inner surface of the square pipe, and thus has the problem of requiring a power supply, similar to Patent Documents 1 and 2.

[0009] Also, a technology entitled "Buddhist Music Instrument" has been disclosed (see Patent Document 4). The problem of this technology is to "provide a Buddhist music instrument with a better tone, a longer reverberation time, and a dramatically improved lingering sound, while maintaining the external shape based on tradition and style," and the solution is described as "a Buddhist music instrument made of metal that produces a striking sound and has an upward or downward bowl, dome, cup, or other shape, such as a Buddhist bell, inkin, keisu, temple bell, or half bell, characterized by a thickened portion provided around the entire periphery on the inside of the rim at a position with a gap from the rim, in the shape of an endless band, and a configuration in which the thickness gradually increases from the inside bottom portion to the rim." However, the invention described in Patent Document 4 produces a sound by gradually increasing the thickness from the inside bottom to the rim, and is formed by a casting method.In contrast, the present invention solves the problem of producing a long reverberation by press-forming a 0.5 mm flat plate, and the technical means for solving the problem are different. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Publication No. 2023-063912 [Patent Document 2] Japanese Patent Application Publication No. 2025-046229 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-084769 [Patent Document 4] Japanese Patent Application Laid-Open No. 2007-061224 Summary of the Invention [Problem to be solved by the invention]

[0011] To provide a pest repellent sound generating device which can attract the attention of a pest when encountering the pest, preferably make the pest escape, and also repel the pest in the soil by transmitting vibrations in a specific frequency band into the soil. [Means for solving the problem]

[0012] The present invention is a component of a device that generates a sound to repel pests, and comprises a handle and a pest repellent sound generating unit attached to the tip of one side of the handle. The pest repellent sound generating unit is made of 0.5 mm stainless steel plate formed into an approximately hemispherical shape with a rib on the opening edge, a hole in the center on the opposite side to the opening, and a folded portion where the outer edge of the rib is folded back in a roll shape. One end of the handle has a screw part for connecting the handle and the pest repellent sound generating unit, and the screw part is equipped with a frequency adjustment member for generating a sound in the frequency range of 80 to 130 Hz by striking the pest repellent sound generating unit.

[0013] The present invention may also employ a configuration in which the screwed portion includes a ring-shaped member and a ring rotating member for generating sound.

[0014] The present invention may also employ a configuration in which a flat portion that is mirror-finished is provided in the vicinity of the threaded portion.

[0015] The present invention can also employ a configuration in which a handle is inserted from the opening side of the pest repellent sound generating unit and arranged in an umbrella shape. [Effects of the Invention]

[0016] The pest repellent sound generating device according to the present invention generates a sound of a frequency that pests dislike, and therefore has the excellent effect of repelling pests. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram illustrating the basic configuration of a pest repellent sound generating device according to the present invention; [Figure 2]This is an explanatory diagram illustrating a second embodiment in which the pest repellent sound generating part of the pest repellent sound generating device of the present invention is configured to have a ring-shaped member for generating sound and a ring rotating member at a screw-type engaging portion for connecting the handle portion and the pest repellent sound generating part. [Figure 3] FIG. 10 is an explanatory diagram illustrating a third embodiment in which the handle is inserted from the opening side of the pest repellent sound generating part of the pest repellent sound generating device according to the present invention and arranged in an umbrella shape. [Figure 4] 1 is a diagram illustrating a state in which the pest repellent sound generating device according to the present invention is used; [Figure 5] FIG. 10 is an explanatory diagram illustrating a second state of use of the pest repellent sound generating device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The pest repellent sound generating device 1 of the present invention is a device equipped with a component for generating a sound to repel pests K. The device comprises a handle 10 and a pest repellent sound generating unit 20 attached to one end of the handle 10. The pest repellent sound generating unit 20 is formed into a substantially hemispherical shape from a 0.5 mm stainless steel plate 23 with a rib 21 at the edge of the opening, a hole in the center of the opposite side to the opening, and a folded portion 25 where the outer edge of the rib 21 is folded back in a roll shape. One end of the handle 10 has a screw-threaded portion 30 for connecting the handle 10 to the pest repellent sound generating unit 20. The most notable feature of the device is that the screw-threaded portion 30 is provided with a frequency adjustment member 24 for generating a sound in the 80 to 130 Hz frequency band when the pest repellent sound generating unit 20 is struck. The following description will be made with reference to the drawings. The overall shape and dimensions of each part of the bear deterrent device 1 of the present invention are not limited to the description given below, but can be modified within the scope of the technical concept of the present invention, i.e., within the range of shapes and dimensions that achieve the same functional effect.

[0019] Fig. 1 is an explanatory diagram of the basic configuration of the pest repellent sound generating device according to the present invention, in which Fig. 1(a) shows a plan view, Fig. 1(b) shows a front view, Fig. 1(c) shows an A-A cross-sectional view, and Fig. 1(d) shows an enlarged cross-sectional view of rib 21. Each of the components used will be described in detail below.

[0020] The handle 10 is a member that a person H grasps to cause the pest repellent sound generating device 1 of the present invention to perform a deterrent action, and specifically, is composed of a rod-shaped member with a diameter of approximately 30 mm to 50 mm and a length of approximately 350 mm to 450 mm. A stud bolt or embedded nut is provided at one end, and the pest repellent sound generating unit 20 is attached by a threaded member 31. Although not shown in the drawings, it is also preferable to be able to attach a base on which a small bowl or the like can be placed.

[0021] The pest repellent sound generating unit 20 is a component for generating sounds in a frequency band that is disliked by vermin K such as bears, and is formed in a roughly hemispherical shape with ribs 21 on the edge of the opening, and has holes formed in the center of the opposite side to the opening, where it is firmly fastened to the handle 10 by a screw-fitting member 31 such as an anchor bolt. In addition, a flat surface 50 is provided near the screw-fitting portion 30 of the pest repellent sound generating unit 20, and by giving the flat surface 50 a mirror finish, it reflects the image of vermin K, thereby exerting the effect of attracting the attention of vermin such as bears.

[0022] The rib 21 is provided at the edge of the opening of the pest repellent sound generating device 20, and serves as a reinforcing part to maintain the approximately hemispherical shape. The tip of the rib 21 is folded back, and it is thought that this folded back part vibrates to extend the reverberation. The rib 21 is provided to make it easier to stand the pest repellent sound generating device 1 upright.

[0023] The opening 22 is an opening that is formed when the stainless steel plate 23 is drawn into a substantially hemispherical shape. A rib 21 is formed on the outer periphery of the opening 22.

[0024] The stainless steel plate 23 is made of "stainless steel," a material primarily composed of iron and containing 1.5% or more chromium. The surface is covered with a "passive film" formed when the primary component, chromium, combines with oxygen, preventing oxidation (rust) of the internal iron and providing excellent corrosion resistance and durability. Its surface is beautiful and maintains its condition. Suitable types of stainless steel are SUS304 and SUS430. A technical feature of the present invention is the need to process the plate material to generate a specific frequency band. Therefore, a thickness of 0.5 mm was selected, taking into account productivity, such as processability. Furthermore, compared to copper alloys commonly used for bells and chimes, stainless steel tends to emphasize high-frequency components (short wavelengths), producing a hard, sharp, and long-lasting sound. This is due to the hardness (high elastic modulus) and low internal friction of stainless steel. Another important factor characterizing the tone of stainless steel is reverberation, or the rapid decay of vibrations. Stainless steel is a material with relatively little atomic friction (conversion of vibrational energy into heat) within the metal, so vibrations do not lose their energy easily once generated and decay slowly, meaning that reverberation (resonance) lasts for a long time. This is what allows sound to travel long distances.

[0025] Since the pest repellent sound generating unit 20 of the present invention is forged from a flat plate, it is difficult to create thick and thin sections like a cast fire bell. Therefore, the frequency adjustment member 24 is used to adjust the sound generated when struck and change the vibration frequency. Specifically, the frequency of the sound generated is changed by changing the thickness or number of washers. When the frequency adjustment member 24 is not used, the frequency of the striking sound is approximately 196 Hz when the pest repellent sound generating unit 20 has a height of 200 mm, a diameter of 600 mm, a bent portion radius of 270 mm, and a protrusion of the rib 21 of 30 mm. When the diameter is 240 mm and the thickness is 1.2 mm, the frequency is approximately 100 Hz.

[0026] As shown in Figure 1(d), the folded portion 25 is formed by folding the tip of the outer edge of the rib 21 in a roll shape, which increases the rigidity of the pest repellent sound generating portion 20 of the present invention, prevents injury from the edge, and is thought to play a role in vibrating the folded portion 25 to extend the reverberation.

[0027] The screw-fitting portion 30 indicates a means for connecting the handle portion 10 and the pest repellent sound generating unit 20. Other methods include fitting or welding, but it is preferable to make the handle portion 10 and the pest repellent sound generating unit 20 disassembled, as this allows for flexible switching between the arrangement of the handle portion 10 and the pest repellent sound generating unit 20 shown in Figures 1 and 2 and the arrangement of Figure 3, and is also advantageous in that it makes packaging easier at the time of sale.

[0028] The threaded member 31 is a fastener used in the threaded portion 30. Specifically, for example, a stud bolt, an embedded nut, or the like may be used.

[0029] The flat surface 50 has a flat surface near the joint between the pest repellent sound generating unit 20, which is formed in a roughly hemispherical shape, and the handle 10, and by mirror-finishing this flat surface, the user can project his or her image to an approaching pest K (especially a bear). Specifically, it is desirable for the flat surface to be 25 cm or more in diameter.

[0030] 2 is an explanatory diagram illustrating a second embodiment in which the pest repellent sound generating device 1 of the present invention has a ring-shaped member 40 and a ring rotating member 41 for generating sound at a screw joint for connecting the handle 10 and the pest repellent sound generating unit 20, where FIG. 2(a) shows a plan view, FIG. 2(b) shows a front view, and FIG. 2(c) shows a cross-sectional view taken along the line A-A. As shown in FIG. 2, in the second embodiment, the double-hanging structure of the ring-shaped member 40 and the ring rotating member 41 allows the fulcrum of the ring-shaped member 40 to strike the inner wall of the pest repellent sound generating unit 20 over a wider area via the ring rotating member 41, resulting in a louder hitting sound.

[0031] The ring-shaped member 40 plays a role similar to that of a bell clapper, which is suspended by a ring rotating member 41 inside the pest repellent sound generating unit 20, which is formed in an approximately hemispherical shape, and is a member that generates sound by striking the inner wall of the pest repellent sound generating unit 20.

[0032] The ring rotation member 41 is double-suspended together with the ring-shaped member 40, dispersing the load concentrated at one joint and preventing damage or deformation of the ring-shaped member 40, which acts as a pendulum.

[0033] 3 is an explanatory diagram illustrating a third embodiment in which the handle 10 is inserted from the opening 22 side of the pest repellent sound generating unit 20 of the pest repellent sound generating device 1 according to the present invention and arranged in an umbrella shape, with FIG. 3(a) showing a plan view, FIG. 3(b) showing a front view, and FIG. 3(c) showing a cross-sectional view taken along line A-A. As shown in FIG. 3, in the third embodiment, the handle 10 is arranged in an umbrella shape relative to the pest repellent sound generating unit 20, so that sound and vibrations propagate downward (into the ground) through the handle 10. This configuration can therefore also be considered a mole-repellent arrangement.

[0034] FIG. 4 is a diagram illustrating the use of the pest repellent sound generating device 1 when the target of pest repellent is a bear.

[0035] When the pest K is a bear, it generally has dense fur, a short tail, thick, short limbs, and a large body. While their vision and hearing are not particularly excellent, their sense of smell is highly developed, seven times stronger than that of a dog. While canines and felines walk on their toes ("digitigrade"), like humans, bears walk on their heels ("plantigrade"). This makes them less adept at running fast, but they are relatively adept at standing upright on their hind legs. They have five toes, each with a long, curved, non-retractable claw. These claws are well-suited for tearing and digging, and in recent years, there have been many cases of serious injuries, such as being scratched in the face by the claws.

[0036] Person H is a person who uses the pest repellent sound generating device 1 according to the present invention to deter a bear. Person H grasps the handle 10 and strikes the pest repellent sound generating unit 20 or shakes the pest repellent sound generating unit 20 and strikes the ring-shaped member 40 against the inner wall of the pest repellent sound generating unit 20 to make a sound and deter the bear. If the bear does not run away, person H points the pest repellent sound generating unit 20 toward the bear so that the flat surface of the pest repellent sound generating unit 20 is in front of it to attract the bear's attention and focus the bear's attention on the pest repellent sound generating unit 20. When the bear shows interest in the pest repellent sound generating device 1, person H slowly places the pest repellent sound generating device 1 on the ground and takes the opportunity to back away and move away from the area, thereby performing a deterrent action.

[0037] Figure 5 is an explanatory diagram illustrating a second use state of the pest repellent sound generating device according to the present invention. Figure 5(a) shows the automatic firing device 60 when the handle 10 is inserted into the opening 22 of the pest repellent sound generating unit 20 and arranged like an umbrella, while Figure 5(b) shows the pest repellent sound generating unit 20 when the handle 10 is thrust into the ground, such as a field, with the opening 22 facing downward, transmitting vibrations underground. Note that moles dislike low-frequency sounds around 400 Hz, so it is desirable to adjust the frequency of the generated sound by appropriately combining and striking the frequency adjustment member 24.

[0038] As shown in Figure 5(a), the automatic striking device 60 uses a windmill to strike the pest repellent sound generator 20. This configuration eliminates the need for electrical energy and allows for cost-effective manufacturing. Although not shown in the figure, the device may also be equipped with a motor and power source for striking. In this case, the drive can be controlled, such as by using an intermittent mode, to send varying vibrations into the soil. Figure 5(b) shows a situation in which the pest K is a mole. Sound travels poorly underground, and moles, while having excellent hearing, are said to be even more sensitive to vibrations. The mole is repelled by the transmission of vibrations at a frequency disliked by the mole. Note that the vibrations in the configuration shown in Figure 5(b) are generated by striking with a stick or kicking. [Industrial Applicability]

[0039] In recent years, bears and other harmful animals have been appearing not only in mountainous areas but also in residential areas, and there have been cases where they have even invaded stores and facilities. This invention is necessary in many places, and since it can be used in the field of manufacturing products for pest control, etc., it is believed to have high industrial applicability. [Explanation of symbols]

[0040] 1. Pest repellent sound generator 10 Handle 20 Pest repellent sound generator 21 Ribs 22 Opening 23 Stainless steel plate 24 Frequency adjustment member 25 Folded section 30 Threaded portion 31 Threaded member 40 Ring-shaped member 41 Ring rotating member 50 Plane part 60 Automatic firing device K. Vermin H people

Claims

1. A component of a device that generates a sound to repel harmful animals (K), It comprises a handle (10) and a pest repellent sound generating unit (20) provided at the tip of one side of the handle (10), The pest repellent sound generating part (20) is made of a 0.5 mm stainless steel plate (23) formed into a substantially hemispherical shape with a rib (21) on the opening edge, a hole in the center of the opposite side to the opening, and a folded part (25) where the outer edge of the rib (21) is folded back in a roll shape, and one end of the handle part (10) has a screw part (30) for connecting the handle part (10) to the pest repellent sound generating part (20), The pest repellent sound generating device (1) is characterized in that the screw-engagement part (30) is provided with a frequency adjustment member (24) for generating a sound in the frequency band of 80 to 130 Hz by hitting the pest repellent sound generating part (20).

2. 2. The pest repellent sound generating device (1) according to claim 1, characterized in that the threaded portion (30) is provided with a ring-shaped member (40) and a ring rotating member (41) for generating sound.

3. A pest repellent sound generating device (1) as described in claim 1, characterized in that it has a mirror-finished flat portion (50) on the inside of the bottom of the pest repellent sound generating portion (20) near the screw-on portion (30).

4. 2. The pest repellent sound generating device (1) according to claim 1, characterized in that the handle (10) is inserted from the opening (22) side of the pest repellent sound generating part (20) and arranged in an umbrella shape.

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