Sound ringer
The sound-making tool, featuring a foam resin main body and rigid plates on swinging parts, addresses the challenges of producing loud sounds and ensuring safety, achieving a durable and cost-effective solution for sports game venues.
Patent Information
- Application Number
- JP2023196300
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-17
- Publication Date
- 2025-05-29
AI Technical Summary
Existing sound-making devices for sports game venues, such as paper-made and synthetic resin-made tools, face issues like difficulty in producing loud sounds, ease of damage, high manufacturing costs, and safety concerns, especially for small children.
A sound-making tool with a main body made of integrally molded foam resin, featuring a pair of swinging parts with rigid plates attached to their inner surfaces, allowing for a simple and durable structure that produces a loud sound when the plates come into contact.
The tool achieves a loud and audible sound with a simple and durable structure, ensuring safety for all users, including small children, while maintaining a low manufacturing cost.
Smart Images
Figure 2025082753000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a sound - making device that can be used when making sounds at a sports game venue or the like.
Background Art
[0002] At game venues such as baseball and basketball games, in order to cheer for the players, people hit objects to make sounds. As sound - making tools (sound - making devices), various types have been proposed so far. For example, as shown in FIG. 3 of Patent Document 1 and FIG. 3 of Patent Document 2, a thing formed by folding cardboard into a corrugated shape (hereinafter sometimes referred to as a "cardboard sound - making device"), and as shown in FIG. 4 of Patent Document 3 and FIG. 4 of Patent Document 4, a thing formed by shaping synthetic resin into a specific shape (hereinafter sometimes referred to as a "synthetic resin sound - making device") have been proposed.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Patent Document 2
Patent Document 3
Patent Document 4
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, the paper-made sound-making tool had problems such as being difficult to produce a loud sound that could be heard in the venue. Also, when hitting it hard to make a loud sound, there was a problem that the paper would tear easily, for example, and it was easily damaged. On the other hand, the synthetic resin-made sound-making tool had problems such as its structure being likely to become complicated, such as connecting a plurality of parts via hinges, and the manufacturing cost becoming high. Also, there was a risk of pinching fingers or the like between the parts that strike each other, and there was a problem that it was difficult for small children to use it with confidence.
[0005] The present invention has been made to solve the above problems, and an object thereof is to realize a sound-making tool that can produce a loud sound with a simple and durable structure. Another object of the present invention is also to provide a sound-making tool that is excellent in safety and can be used with confidence even by small children.
Means for Solving the Problems
[0006] The above problems are a main body integrally formed of a foamed resin, having a pair of swinging parts arranged to face each other and a connecting part connecting the base end parts of the respective swinging parts, a pair of rigid plates attached to the inner surfaces at the tip ends of the pair of swinging parts, and are provided, When holding the vicinity of the connecting part of the main body with one hand on one side and hitting the outer surface of the intermediate part located between the tip end part and the base end part of one swinging part with the other hand, the other swinging part approaches the one swinging part, and when the pair of rigid plates come into contact with each other, a striking sound is generated. The sound-making tool is characterized by This solves the problem.
[0007] The sound-making tool of the present invention has a simple structure in which a pair of rigid plates are only attached to a main body made of an integrally molded foam resin. Therefore, not only can the manufacturing cost of the sound-making tool be suppressed, but the durability of the sound-making tool can also be enhanced. Further, in the sound-making tool of the present invention, most of it (the main body) is formed of an elastic foam resin. For this reason, the sound-making tool of the present invention is excellent in safety such that even a small child can use it without easily getting injured. Furthermore, in the sound-making tool of the present invention, due to the bending of the swing portion formed of the foam resin, the rigid plate at the tip of the swing portion is strongly struck, so that a loud sound that is easy to hear can be produced at a game venue or the like.
[0008] In the sound-making tool of the present invention, the rigid plate may be provided only at the tip portions of the pair of swing portions, but it is preferable to continuously provide it over a range from the tip portions to the intermediate portions of the pair of swing portions. Thereby, the stiffness of the swing portion can be strengthened. For this reason, it becomes possible to make the swing portion more easily bendable, to make a louder sound more easily audible, and to further enhance the durability of the sound-making tool.
[0009] In the sound-making tool of the present invention, it is also preferable to cover the outer peripheral surfaces of the pair of swing portions with a skin made of a resin shrink film. Thereby, it becomes possible to protect the swing portion made of the foam resin from dirt and moisture. Also, the stiffness of the swing portion can be further strengthened, the swing portion can be made more easily bendable, and a louder sound can be made. Furthermore, since characters, patterns, etc. can be represented on the skin, the designability of the sound-making tool can also be enhanced.
[0010] However, if the outer peripheral surface of the swing portion is covered with the skin, there is a possibility that wrinkles are formed on the skin. In particular, there is a possibility that the skin may shift with respect to the swing portion during repeated use of the sound-making tool. For this reason, in the sound-making tool of the present invention, when providing the skin, it is preferable to cover the base end edge and the tip edge of the rigid plate with the skin. Thereby, by making the skin hooked on the base end edge and the tip edge of the rigid plate, it is possible to make it difficult for the skin to shift with respect to the swing portion.
[0011] Incidentally, in the sound - making device of the present invention, as already described, when it is struck against the opposite hand (the hand on the side opposite to the hand holding the sound - making device) or the like, the pair of swing parts swing relatively, and the pair of rigid plates come into contact with each other to produce a sound. For this reason, near the base (connection part) of the pair of swing parts, stress due to swinging is repeatedly applied. Therefore, there is a risk that the connection part (particularly, the part located between the pair of swing parts) may tear. For this reason, in the sound - making device of the present invention, it is preferable to provide a tear - prevention hole in the connection part. Thereby, the above - mentioned stress can be released, and the connection part can be made less likely to tear.
Advantages of the Invention
[0012] As described above, according to the present invention, it becomes possible to realize a sound - making device that can produce a loud sound with a simple and durable structure. Also, it becomes possible to provide a sound - making device that is excellent in safety and can be used with confidence even by small children.
Brief Description of the Drawings
[0013]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Embodiments for Carrying Out the Invention
[0014] The sound - making device of the present invention will be described in more detail with reference to the drawings. The content described below is merely a preferred embodiment, and the technical scope of the sound - making device of the present invention is not limited to the configuration described later. Appropriate modifications can be made to the loud - sounding device of the present invention without departing from the gist of the invention.
[0015] 1. Overview of the sound - making device First, the overview of the sound - making device of the present embodiment will be described. FIGS. 1 to 4 show the sound - making device 10 of the present embodiment. FIG. 1 is a perspective view showing the sound - making device 10 in a state where a pair of swing parts 11a, 11a are open (initial state). FIG. 2 is a perspective view showing the sound - making device 10 in a state where a pair of swing parts 11a, 11a are closed (when a striking sound is generated). FIG. 3 is a perspective view showing the state where the skin 13 is removed from the sound - making device 10 of FIG. 1. FIG. 4 is a front view showing the sound - making device 10 of FIG. 3 as viewed from the front.
[0016] The sound - making device 10 of the present embodiment includes, as shown in FIG. 1, a main body 11, a pair of rigid plates 12, 12, and a pair of skins 13, 13.
[0017] The main body 11 has, as shown in FIG. 3, a pair of swing parts 11a, 11a and a connecting part 11b, and the whole is integrally formed. The pair of swing parts 11a, 11a are arranged to face each other. The whole of the main body 11 is formed of a foamed resin. Therefore, the main body 11 can be elastically deformed. That is, as shown in FIG. 1, it can be elastically deformed from the state where the pair of swing parts 11a, 11a are open to the state where the pair of swing parts 11a, 11a are closed as shown in FIG. 2.
[0018] The rigid plate 12 is attached, as shown in FIG. 3, to the inner surfaces of the respective pair of swing parts 11a, 11a (the surfaces facing each other in the pair of swing parts 11a, 11a) using an adhesive or the like. As the rigid plate 12, a plate - like member having a certain degree of hardness, such as a plastic plate or a metal plate, can be used.
[0019] As shown in FIG. 1, the skin 13 is attached to each of the pair of swing parts 11a, 11a. The outer peripheral surface of each swing part 11a is covered with the skin 13. This skin 13 is a resin shrink film. After inserting a shrink film formed in a cylindrical shape onto each swing part 11a, the shrink film is heated and thermally shrunk to provide the skin 13. Characters, patterns, etc. can also be represented on this skin 13. In the sound - making tool 10 of the present embodiment, the characters "Win!!" and an illustration of the face of a shouting man are represented on the skin 13.
[0020] This sound - making tool 10 is used by gripping the vicinity of the connecting part 11b of the main body 11 with one hand (hereinafter referred to as the "holding hand"). While holding the main body 11, the holding hand is shaken, and when the outer surface of the intermediate part α 2 on one of the swing parts 11a is struck against the other hand (hereinafter referred to as the "non - holding hand"), the pair of swing parts 11a, 11a changes from the open state (FIG. 1) to the closed state (FIG. 2), and a sound is generated. That is, when one of the swing parts 11a is struck against the non - holding hand, the other swing part 11a swings toward the side of the one swing part 11a due to inertial force, and the pair of rigid plates 12, 12 come into contact with each other. When the pair of rigid plates 12, 12 come into contact, a striking sound is generated. After the pair of swing parts 11a, 11a enter the closed state (FIG. 2), they return to the open state (FIG. 1) again due to their return elastic force. Therefore, when the swing part 11a is repeatedly struck against the non - holding hand, a striking sound can be repeatedly generated in the form of "Bang, bang, bang...".
[0021] As shown in Fig. 1, the sound - making device 10 of this embodiment has a very simple structure. In particular, a pair of swing parts 11a, 11a are configured to swing - displace due to the elastic deformation of the main body 11 made of foamed resin. Therefore, without incorporating separate parts such as hinges, the pair of swing parts 11a, 11a can be swing - displaced. Thus, the manufacturing cost of the sound - making device 10 can be suppressed. In addition, since the swing part 11a formed of foamed resin is appropriately deformed, the hard plate 12 at the tip of the swing part 11a can be strongly struck. For this reason, it is also possible to make a large, easily audible sound with the sound - making device 10 at a game venue or the like.
[0022] Also, in the sound - making device 10 of this embodiment, since parts that are easily damaged (such as hinges) are not used, the durability of the sound - making device 10 can be enhanced. Furthermore, in the sound - making device 10 of this embodiment, most of it (the main body 11) is formed of elastic foamed resin. For this reason, even if, by any chance, a finger or the like gets caught in the gap between the pair of swing parts 11a, 11a, the impact applied to the finger or the like is alleviated, making it difficult to get injured. Therefore, even a small child or the like can use the sound - making device 10 with confidence.
[0023] 2. Details of each part Subsequently, the details of the main body 11, the hard plate 12, and the skin 13 that constitute the sound - making device 10 of this embodiment will be described.
[0024] 2.1 Main body As already described, the main body 11 is formed of an elastically deformable foamed resin. Thus, even though the main body 11 is formed as one member, the swing part 11a can be elastically swung by the inertial force when the sound - making device 10 is struck against a non - holding hand. Also, since the main body 11 is flexible, it is difficult for the user of the sound - making device 10 to get injured and it is safe. Furthermore, since the main body 11 can be made light, it is easy to carry. The main body 11 can be formed into a predetermined shape by cutting a foamed resin mat or by injection - molding foamed resin with a mold.
[0025] The type of the foamed resin forming the main body 11 is not particularly limited. The main body 11 can be formed of, for example, a foam of polyethylene resin, polypropylene resin, polyurethane resin, polyester resin, acrylic resin, polystyrene resin, melamine resin, silicone resin, natural rubber, synthetic rubber, or the like. When heat resistance, flame retardancy, etc. are emphasized, the main body 11 can also be formed of a foam of urethane resin or melamine resin. In the sound maker 10 of the present embodiment, the main body 11 is formed of a foam of polyethylene resin.
[0026] If the pair of swing parts 11a, 11a are arranged to face each other, their arrangement is not particularly limited. The pair of swing parts 11a, 11a can also be arranged parallel to each other. However, since each swing part 11a swings around the vicinity of its base end part α 1 when the pair of swing parts 11a, 11a are formed in parallel, when the pair of swing parts 11a, 11a are closed, the pair of swing parts 11a, 11a only locally contact at the tip end part α 3 side. For this reason, the pair of rigid plates 12, 12 do not contact with each other in a surface manner, and there is a possibility that a large sound is difficult to be emitted.
[0027] Therefore, in the sound maker 10 of the present embodiment, the pair of swing parts 11a, 11a are arranged to be inclined in a V shape in a front view (so that the gap between the pair of swing parts 11a becomes wider from the base end part α 1 to the tip end part α 3 ). Thereby, as shown in FIG. 2, when the pair of swing parts 11a, 11a are closed, a wide range from the base end part α 1 to the tip end part α 3 of the pair of swing parts 11a, 11a is brought into contact, and the pair of rigid plates 12, 12 can be brought into contact with each other in a surface manner. The inner surface (the surface facing the other swing part 11a) of each swing part 11a is formed in a planar shape. Thereby, as will be described later, the rigid plate 12 can be provided in a wider range, a larger sound can be emitted, and the swing part 11a can be reinforced to enhance the durability of the sound maker 10.
[0028] The specific form of each swinging part 11a is not particularly limited. In the sound-making tool 10 of the present embodiment, the base end part α of each swinging part 11a 1 and the middle part α 2 are formed in a square column shape, while the tip part α of the swinging part 11a 3 is formed to bulge outward. By forming the swinging part 11a in such a form, the center of gravity position of the swinging part 11a is made closer to the tip part α 3 so that when the sound-making tool 10 is struck against a non-dominant hand, the pair of rigid plates 12, 12 can be brought into contact with more force. Therefore, a louder sound can be more easily produced.
[0029] It is also possible to represent a design form on the swinging part 11a. FIG. 5 is a front view showing the sound-making tool 10 of another embodiment. In the sound-making tool 10 of FIG. 5(a), when the pair of swinging parts 11a, 11a are closed, each swinging part 11a is formed so that the main body 11 forms the shape of a sword. Further, in the sound-making tool 10 of FIG. 5(b), one swinging part 11a is formed in a wing shape. Thus, the swinging part 11a can be formed in various shapes. Including the pair of swinging parts 11a, 11a, the main body 11 can also be formed in the form of a trademark of the player being cheered for, a mark or character of the team being cheered for, etc.
[0030] When arranging the pair of swinging parts 11a, 11a in a V shape in a front view as in the sound-making tool 10 of the present embodiment, the setting of the opening angle θ (FIG. 4) of the pair of swinging parts 11a, 11a is not particularly limited. However, if the opening angle θ is made too small, the pair of swinging parts 11a, 11a will be too close, and when the sound-making tool 10 is struck against a non-dominant hand, the pair of rigid plates 12, 12 will come into contact immediately, and there is a possibility that a loud sound will be difficult to produce. For this reason, the opening angle θ is preferably 5° or more, and more preferably 10° or more.
[0031] However, if the opening angle θ (Fig. 4) of the pair of swing parts 11a, 11a is made too large, the pair of rigid plates 12, 12 will not come into contact unless the swing part 11a swings significantly. Therefore, even if the sound maker 10 is struck against a non-dominant hand, the pair of rigid plates 12, 12 may not come into contact, making it difficult to produce a sound. Thus, the opening angle θ is preferably 45° or less. More preferably, the opening angle θ is 30° or less, and even more preferably 20° or less. In the sound maker 10 of the present embodiment, the opening angle θ is set to approximately 15°.
[0032] Length L of the swing part 11a 1 (Fig. 4) is not particularly limited either. However, if the swing part 11a is made too short, it becomes difficult to strike the swing part 11a against a non-dominant hand. Also, the momentum of the swing part 11a when the pair of rigid plates 12, 12 come into contact becomes weak, and there is a possibility that a loud sound is difficult to produce. Length L of the swing part 11a 1 is preferably 15 cm or more. Length L of the swing part 11a 1 is more preferably 20 cm or more, and even more preferably 25 cm or more.
[0033] However, if the swing part 11a is made too long, not only does it become difficult to swing the sound maker 10, but it also becomes difficult to carry. Therefore, the length L of the swing part 11a 1 is preferably 50 cm or less, and more preferably 40 cm or less. In the sound maker 10 of the present embodiment, the length L of the swing part 11a 1 is set to approximately 30 cm. Either one of the pair of swing parts 11a, 11a may be made longer, but in the sound maker 10 of the present embodiment, they are made the same length.
[0034] Width W of the swing part 11a 1 (Fig. 4) and thickness T 1 (Fig. 3) are not particularly limited either. However, if the swing part 11a is made too thin, the strength of the swing part 11a may decrease. Therefore, the width W of the swing part 11a 1 (the width W varies depending on the location 1If they are different, the minimum value) is preferably 10 mm or more, more preferably 15 mm or more. Further, the thickness T of the swing part 11a 1 (If the thickness T 1 is different depending on the location, the minimum value) is preferably 10 mm or more, more preferably 15 mm or more, and even more preferably 20 mm or more.
[0035] However, if the swing part 11a is made too thick, the swing part 11a may be less likely to elastically deform. Also, there is a possibility that the sound maker 10 becomes difficult to handle or difficult to carry. For this reason, the width W of the swing part 11a 1 (If the width W 1 is different depending on the location, the maximum value) is preferably 300 mm or less, more preferably 200 mm or less. Further, the thickness T of the swing part 11a 1 (If the thickness T 1 is different depending on the location, the maximum value) is preferably 100 mm or less, more preferably 50 mm or less. In the sound maker 10 of the present embodiment, the width W of the swing part 11a 1 is set to about 20 mm, and the thickness T of the swing part 11a 1 is set to about 25 mm.
[0036] The width W of the connecting part 11c 2 (Fig. 4) is not particularly limited either. However, if the connecting part 11c is made too thin, the connecting part 11c may break. For this reason, the width W of the connecting part 11c 2 is preferably 10 mm or more. The width W of the connecting part 11c 2 is more preferably 15 mm or more, and even more preferably 20 mm or more. However, if the connecting part 11c is made too thick, it becomes difficult for the pair of swing parts 11a, 11a to elastically close. For this reason, the width W of the connecting part 11c 2 is preferably 50 mm or less, more preferably 30 mm or less. In the sound maker 10 of the present embodiment, the width W of the connecting part 11c 2 is set to about 25 mm. The thickness T of the connecting part 11c 2(FIG. 3) can be set within the same range as the thickness T of the swing part 11a described above. 1 It can be set within a similar range.
[0037] Incidentally, in the sound-making tool 10 of this embodiment, as shown in FIGS. 1 to 4, the main body 11 is provided with a tear-preventing hole 11c. This tear-preventing hole 11c is provided at a position between the pair of swing parts 11a, 11a in the connecting part 11b. When the pair of swing parts 11a, 11a are arranged in a V shape in a front view as in the sound-making tool 10 of this embodiment, there is a risk that the inner corner side of the corner formed by the pair of swing parts 11a, 11a may tear when the sound-making tool 10 is repeatedly used. By providing this tear-preventing hole 11c, the inner corner side of the corner is prevented from becoming an acute angle, and that part can be made less likely to tear. The tear-preventing hole 11c has a shape without corners, such as a circular shape or an elliptical shape. Further, the diameter of the tear-preventing hole 11c is usually about 2 to 20 mm, preferably about 5 to 10 mm.
[0038] 2.2 Hard plate The hard plate 12 is for generating a striking sound. That is, since the pair of swing parts 11a, 11a are formed of a flexible foamed resin, even when the swing parts 11a come into contact with each other, it is difficult to produce a loud sound. By attaching the hard plate 12 to the inner surfaces of the pair of swing parts 11a, 11a, when the pair of swing parts 11a close, the pair of swing parts 11a come into contact with each other and a loud sound is produced. The method of fixing the hard plate 12 to the swing part 11a is not particularly limited, and examples include adhesion and welding.
[0039] The material of the hard plate 12 is not particularly limited as long as it has a hard surface. The hard plate 12 can be made of metal or wood, but is usually made of resin. Examples of resins that form the hard plate 12 include polyethylene resin, polypropylene resin, polyurethane resin, polyester resin, acrylic resin, and polystyrene resin. Only the surface layer of the hard plate 12 can be hardened. In the sound-making device 10 of this embodiment, the hard plate 12 is formed of a resin foam (a foam of polyethylene resin), and only the surface of the hard plate 12 is compressed and hardened. This not only reduces the weight of the hard plate 12, but also makes it easier to make a dry sound such as "bang."
[0040] The hard plate 12 is formed at least at the tip end α of each of the swinging portions 11a. 3 However, the tip end α of the swinging portion 11a may be provided 3 When the hard plate 12 is attached to the chisel, the intermediate portion α of the swinging portion 11a 2 When the handle is struck against the non-grip, the swinging portion 11a swings to the middle portion α 2 Therefore, if the sound making tool 10 is repeatedly used to make sounds, the swinging portion 11a may bend toward the middle portion α 2 In particular, as in the sound making device 10 of this embodiment, the rocking portion 11a may be repeatedly bent near the tip end α of the rocking portion 11a, which may cause the rocking portion 11a to break (plastically deform). 3 and the middle part α 2 If there is a crevices at the boundary between the plate and the wall, stress tends to concentrate in that area, making that area more likely to break.
[0041] Therefore, in the sound making device 10 of this embodiment, as shown in FIG. 3, the tip end α 3 In addition, the tip end α of the swinging portion 11a 3 Kara Middle Part α 2The rigid plate 12 is continuously provided over the range up to this point. As a result, a wide range of the swing portion 11a can be reinforced by the rigid plate 12, making the swing portion 11a less likely to be damaged. Also, since the stiffness of the swing portion 11a is increased, the swing portion 11a is made more flexible, and it is also possible to make a louder sound more likely to occur. The rigid plate 12 extends to the base end portion α of the swing portion 11a 1 and may extend up to that point.
[0042] The length L of the rigid plate 12 2 (FIG. 4) is not particularly limited. However, if the rigid plate 12 is too short, not only is it difficult to make a sound, but it is also difficult to achieve the above-described effect (the reinforcing effect of the swing portion 11a by the rigid plate 12). Therefore, the length L of the rigid plate 12 2 is the length L of the rigid plate 12 with respect to the length L of the swing portion 11a 1 2 The ratio L 2 / L 1 is preferably set in the range where it is 0.3 or more. The ratio L 2 / L 1 is more preferably 0.5 or more, and even more preferably 0.6 or more.
[0043] However, even if the rigid plate 12 is made too long, it doesn't make much sense. In addition to the fact that the vicinity of the base end portion α of the swing portion 11a doesn't elastically displace very much (the swing displacement is small), and since it is grasped by the handle, it is not easily damaged even without reinforcement by the rigid plate 12. Also, when the swing portion 11a swings, the displacement speed of the base end portion α is slower than that of the tip end portion α. For this reason, the effect of increasing the hitting sound due to the contact of the pair of rigid plates 12, 12 at the base end portion α of the swing portion 11a is limited. Therefore, the length L of the rigid plate 12 1 is the length L of the rigid plate 12 with respect to the length L of the swing portion 11a 3 1 The ratio L 1 is preferably set in the range where it is 0.9 or less. The ratio L 2 / L 1 is the length L of the rigid plate 12 with respect to the length L of the swing portion 11a 2 The ratio L 2 / L 1 is preferably set in the range where it is 0.9 or less. The ratio L 2 / L 1 is more preferably 0.8 or less, and even more preferably 0.7 or less. Also in the sound-making device 10 of the present embodiment, the ratio L 2 / L 1 is in the range of 0.6 to 0.7.
[0044] The width W of the rigid plate 12 3 (FIG. 3) is usually the same as or slightly smaller than the thickness T of the swing part 11 1 (FIG. 3). Thereby, a wide contact area between the pair of rigid plates 12, 12 when the pair of swing parts 11a, 11a are closed can be ensured, and a louder sound can be produced. The thickness T of the rigid plate 12 3 is usually about 0.5 to 5 mm, preferably 1 to 3 mm.
[0045] 2.3 Skin The skin 13 (FIG. 1) is provided in a state of covering the outer peripheral surfaces of the pair of swing parts 11a, 11a. By this skin 13, the swing part 11a made of foamed resin can be protected from dirt and moisture. Also, the swing part 11a can be reinforced to strengthen the firmness of the swing part 11a and make the swing part 11a more deformable. Furthermore, by representing characters, patterns, etc. on the skin 13, the designability of the sound-making device 10 can also be enhanced. As already described, in the sound-making device 10 of the present embodiment, the skin 13 represents the character "Win!!" and the illustration of the face of a shouting man, and as shown in FIG. 2, when the pair of swing parts 11a, 11a are closed, the characters and patterns appear to be connected.
[0046] As the skin 13, a resin-made shrink film (heat-shrinkable resin film) is used. In the sound-making device 10 of the present embodiment, the skin 13 is formed by a stretched film of polystyrene. After forming a stretched film made of such a heat-shrinkable resin into a cylindrical shape and inserting it externally into each swing part 11a, it is heated using a heat source such as a heat shrinker or a heat gun, and the stretched film is shrunk to be adhered to the outer peripheral surface of the swing part 11a, thereby forming the skin 13.
[0047] By the way, when the sound-producing device 10 makes a sound, since the swinging part 11a is elastically deformed, if the skin 13 cannot follow the deformation of the swinging part 11a, the skin 13 may be torn. The occurrence of this problem can be suppressed by forming the skin 13 from a material with better followability than polystyrene. Examples of resin materials with good followability include polyvinyl chloride, polypropylene, polyethylene terephthalate, thermoplastic polyurethane, and the like.
[0048] However, even if the skin 13 is made less likely to tear, wrinkles may form on the skin 13. The wrinkles on the skin 13 are caused by the skin 13 shifting relative to the swinging part 11a. Therefore, in the sound-producing device 10 of the present embodiment, the skin 13 is covered on the base end edge and the tip edge of the rigid plate 12. As a result, the skin 13 is caught between the base end edge and the tip edge of the rigid plate 12, and the skin 13 can be made less likely to shift relative to the swinging part 11a.
Explanation of Reference Numerals
[0049] 10 Sound-producing device 11 Main body 11a Swing body 11b Connecting part 11c Tear prevention hole 12 Rigid plate 13 Skin L 1 Length of the swinging part L 2 Length of the rigid plate T 1 Thickness of the swinging part T 2 Thickness of the connecting part T 3 Thickness of the rigid plate W 1 Width of the swinging part W 2 Width of the connecting part W 3 Width of the rigid plate α 1 Base end part α 2 Middle part α 3 Tip end part θ Opening angle of a pair of swing parts
Claims
1. A main body integrally formed of a foamed resin, comprising a pair of swing parts arranged to face each other and a connecting part connecting the base end parts of the respective swing parts, a pair of rigid plates attached to the inner surfaces at the tip ends of the pair of swing parts, and when gripping the vicinity of the connecting part of the main body with one hand and hitting the outer surface of the intermediate part located between the tip end part and the base end part of one swing part with the other hand, the other swing part approaches the one swing part, and when the pair of rigid plates come into contact with each other, a striking sound is generated. A sound-making tool characterized by the above.
2. The sound-making tool according to Claim 1, wherein the rigid plates are continuously provided over a range from the tip ends to the intermediate parts of the pair of swing parts.
3. The sound-making tool according to Claim 2, wherein the outer peripheral surfaces of the pair of swing parts are covered with an outer skin made of a resin shrink film.
4. The sound-making tool according to Claim 3, wherein the base end edges and the tip end edges of the rigid plates are covered with the outer skin.
5. The sound-making tool according to any one of Claims 1 to 4, wherein a tear prevention hole is provided in the connecting part.
Citation Information
Patent Citations
Cheering implement
JP2001117565A
Cheering aid
JP2010271651A
support equipment
JP3019119U
support equipment
JP3022916U