Sounding Toys

Abstract

To provide a sound making toy contributing to environmental impact reduction and resource saving, and having stable strength despite a hollow paper cylinder.SOLUTION: A sound making toy assembled by folding a flat blank sheet 1 made of a paper material, includes: a polygonal cylindrical body 15 with a hollow part E inside, formed by folding a sheet body 2 along a plurality of first fold lines L1 formed on the sheet body 2 in a front-back direction and joining left / right side parts of the sheet body 2 to each other; a lid piece 20 formed by folding a front flap 3 along second fold lines L2 formed between itself and the seat body 2 and closing a cylindrical opening 17 in front of the body 15; and a partition piece 16 formed by folding a rear flap 4 along third fold lines L3 formed between itself and the seat body 2 and partitioning the hollow part E of the body 15 halfway in the front / back direction. An echo chamber 21 partitioned by the lid piece 20 and the partition piece 16 is formed inside the body 15.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sounding toy.

Background Art

[0002] The sounding toy of the present invention is used as a cheering tool. This type of cheering tool is disclosed in, for example, Patent Documents 1 and 2. The cheering tool described in Patent Document 1 is a stick balloon that expands into a rod shape by filling it with gas, and sound can be produced by hitting two stick balloons against each other. Patent Document 2 discloses a palm-shaped balloon. Patent Document 3 discloses a paper cheering tool made of a flat blank sheet composed of two members symmetrically arranged vertically. This paper cheering tool can be assembled into a substantially hexagonal cylinder shape by inserting three insertion pieces provided on each of the upper and lower members into corresponding locking holes.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the cheering tools described in Patent Documents 1 and 2 are made of synthetic resin (synthetic rubber) derived from petroleum, which is a fossil resource, there is a risk of causing environmental problems such as global warming due to carbon dioxide generated during incineration. Using synthetic resin (synthetic rubber) as a material also goes against the concept of promoting material cycles aimed at resource conservation or using waste as raw materials.

[0005] In contrast, the cheering equipment described in Patent Document 3 is made of paper, and therefore can contribute to solving the aforementioned environmental and resource conservation problems. However, the cheering equipment described in Patent Document 3 is simply a hexagonal tube made of paper, and because it is a hollow tube, it has low strength and may deform, such as the sides of the tube denting, when struck hard.

[0006] The present invention aims to provide a sound-making toy that contributes to reducing environmental impact and conserving resources, and that possesses stable strength despite being a hollow cylindrical body made of paper. [Means for solving the problem]

[0007] The present invention relates to a sound-making toy assembled by folding a flat blank sheet 1 made of paper material. The blank sheet 1 consists of a rectangular sheet body 2 that is long in the front-to-back direction, a front flap 3 that is attached to the front end of the sheet body 2 in a protruding manner, and a rear flap 4 that is formed in a cantilever shape by partially cutting the rear end of the sheet body 2. The sound-making toy comprises a polygonal cylindrical body 15 having a hollow part E inside, formed by folding the sheet body 2 along a plurality of first fold lines L1 formed in the front-to-back direction and joining the left and right sides of the sheet body 2, a lid piece 20 that closes the front cylindrical opening 17 of the body 15 by folding the front flap 3 along a second fold line L2 formed between it and the sheet body 2, and a partition piece 16 that divides the hollow part E of the body 15 in the middle in the front-to-back direction by folding the rear flap 4 along a third fold line L3 formed between it and the sheet body 2. A resonant chamber 21 is formed inside the main body 15, partitioned by a lid piece 20 and a partition piece 16.

[0008] The rear flap 4 comprises a partition flap 10 formed to have the same cross-sectional shape as the hollow section E and partitioning the hollow section E, and a contact flap 11 formed at the free end of the partition flap 10 and in contact with the inner surface of the main body 15. The partition flap 10 is folded inward towards the hollow section E along the third fold line L3, and the contact flap 11 is pressed against the inner surface of the main body 15, thereby causing the partition flap 10 to brace and support the inner surface of the main body 15.

[0009] The sheet body 2 has six first fold lines L1 (L1a to L1f) formed at equally spaced positions in the left-right direction, and the main body 15 is formed in a hexagonal cylindrical shape. Any three adjacent first fold lines L1 in the left-right direction are defined as the left fold line L1d, the center fold line L1e, and the right fold line L1f, and the side of the sheet body 2 enclosed by the left fold line L1d and the center fold line L1e is defined as the left side 5e, and the side of the sheet body 2 enclosed by the right fold line L1f and the center fold line L1e is defined as the right side 5f, and the rear flap 4 that constitutes the partition piece 16 is formed along the left and right fold lines L1d and L1f The left and right side pieces 5e and 5f are separated by a first cut line 13a, 13a formed in the front-to-back direction, a second cut line 13b, 13b running diagonally backward from the rear end of the first cut line 13a toward the left-to-right center of the left and right side pieces 5e and 5f, and a third cut line 13c, 13c running diagonally forward from the rear end of the second cut line 13b, 13b toward the center fold line L1e. Third fold line L3 The first cut lines 13a on the left and right are formed diagonally forward from the front ends of each of the first cut lines 13a toward the center fold line L1e, and the fourth fold line L4 formed between the partition flap 10 and the contact flap 11 is formed diagonally backward so as to connect the middle part of the first cut line 13a to the front end of the third cut line 13c. The partition flap 10 is formed in a hexagonal shape defined by a pair of third fold lines L3·L3 on the left and right, a pair of fourth fold lines L4·L4 on the left and right, and a pair of first cut lines 13a·13a on the left and right that extend to the intersection of the fourth fold line L4.

[0010] Inside the resonating chamber 21 is a sound-generating component 18 that collides with the inner wall of the resonating chamber 21 to produce a sound. [Effects of the Invention]

[0011] The sound-making toy according to the present invention is assembled by folding a flat blank sheet 1 made of paper material, and therefore does not pose a risk of causing environmental problems like stick balloons made of synthetic resin (synthetic rubber) derived from fossil resources such as petroleum, thus contributing to reducing environmental impact and conserving resources. In addition, if the sound-making toy according to the present invention is equipped with a polygonal cylindrical main body 15 having a hollow part E inside, as well as a lid piece 20 that closes the cylindrical opening 17 at the front of the main body 15, and a partition piece 16 that divides the hollow part E of the main body 15 in the middle in the front-to-back direction, then the front end and the middle in the front-to-back direction of the polygonal cylindrical main body 15 can be supported at two points by these lid piece 20 and partition piece 16, thereby increasing the rigidity of the main body 15 and giving it stable strength. As a result, even if the side of the main body 15 is struck with a stronger force, deformation such as denting of the main body 15 can be suppressed. When the sound-making toy is operated by gripping the part behind the partition piece 16, or in other words, using the part behind the partition piece 16 as the gripping part, the boundary between the gripping part and the part in front of it (resonance chamber 21) can be firmly supported by the partition piece 16, thus preventing deformation such as bending of the main body 15 from occurring at the boundary. If a resonance chamber 21 is formed inside the main body 15, separated by the lid piece 20 and the partition piece 16, when the side of the main body 15 is struck, the sound is resonated within the resonance chamber 21, producing a resonant sound. Therefore, even when the main body 15 is struck lightly with little force, a loud sound can be produced from the sound-making toy.

[0012] The rear flap 4 comprises a partition flap 10 formed to have the same cross-sectional shape as the hollow portion E and partitioning the hollow portion E, and a contact flap 11 formed at the free end of the partition flap 10 and in contact with the inner surface of the main body 15. By folding the partition flap 10 inward towards the hollow portion E along the third fold line L3 and pressing the contact flap 11 against the inner surface of the main body 15, the partition flap 10 is configured to brace and support the inner surface of the main body 15. Thus, the partition piece 16 formed by the rear flap 4 comprising the contact flap 11 and the partition flap 10 partitions the hollow portion E of the main body 15 and also braces and supports the inner surface of the main body 15. This allows for partitioning the hollow portion E of the main body 15 with a simple configuration and reliably increases the strength of the main body 15. By ensuring that the contact flap 11 is in contact with the inner surface of the main body 15, the bulkhead flap 10 is prevented from shifting unintentionally, thereby more reliably maintaining the bulkhead flap 10 in a braced support position.

[0013] When the sheet body 2 has six first fold lines L1 (L1a to L1f) formed at equally spaced positions in the left-right direction, and the main body 15 is formed in a hexagonal tube shape, the cross-sectional shape can be made closer to a perfect circle compared to when the main body 15 is a square tube or a triangular tube, thus increasing the strength of the main body 15. Also, since there are fewer folds compared to an octagonal tube, the sheet body 2 can be folded more easily and the main body 15 can be assembled more easily. If the partition flap 10 is formed in a hexagonal shape defined by a pair of left and right third fold lines L3·L3, a pair of left and right fourth fold lines L4·L4, and a pair of left and right first notches 13a·13a extending to the intersection of the fourth fold line L4, the partition flap 10 can partition the hollow portion E of the main body 15, and each side of the hexagonal partition flap 10 can be pressed against each piece of the inner surface of the main body 15, thereby firmly bracing and supporting the inner surface of the main body 15. Therefore, the main body 15 can be given more stable strength.

[0014] If a hitting member 18 that collides with the inner wall of the reverberation chamber 21 to generate a sound is accommodated inside the reverberation chamber 21, by simply shaking the main body 15, the hitting member can be made to collide with the inner wall of the reverberation chamber 21 to generate a sound. Therefore, a sound can be generated with a smaller force.

Brief Description of the Drawings

[0015] [Figure 1] It is a perspective view of a sound - making toy according to an embodiment of the present invention. [Figure 2] It is a plan view of a blank sheet constituting the sound - making toy. [Figure 3] It is an enlarged view of a main part for explaining the rear flap. [Figure 4] It is a plan view showing the form (product sheet) at the time of selling the sound - making toy. [Figure 5] (a) and (b) are diagrams for explaining the assembling method of the sound - making toy. [Figure 6] It is a diagram for explaining the assembling method from the product sheet. [Figure 7] It is a cross - sectional view taken along the line A - A of FIG. 1. [Figure 8] It is a perspective view of a main part of a sound - making toy according to a modified example.

Embodiments for Carrying Out the Invention

[0016] (Embodiment) Figures 1 to 7 show an embodiment of the sound-making toy according to the present invention. In this embodiment, front and back, left and right refer to the intersecting arrows shown in Figures 1 to 4 and the front and back, left and right indications written near each arrow. The sound-making toy according to this embodiment is assembled by folding a flat blank sheet 1 made of paper material as shown in Figure 2. The blank sheet 1 consists of a rectangular sheet body 2 that is long in the front-to-back direction, a front flap 3 that protrudes from the front end of the sheet body 2, and a rear flap 4 that is cantilevered by partially cutting near the rear end of the sheet body 2. The sheet body 2 has six fold lines L1 (first fold lines, L1a to L1f) formed in the front-to-back direction, and the sheet body 2 is divided into first to seventh side pieces 5 (5a to 5g) from left to right by these fold lines L1. Figure 2 shows the surface of the blank sheet 1.

[0017] The front flap 3 consists of a closing plate 6 projecting forward from the front end of the second side piece 5b, and folding pieces 7 projecting forward from the front ends of the third, fourth, sixth, and seventh side pieces 5c, 5d, 5f, and 5g. A fold line L2 (second fold line) is formed between the closing plate 6 and folding piece 7 of the front flap 3 and the side piece 5. The closing plate 6 is hexagonal in shape, with a square-shaped engaging piece 8 attached to its front end, and retaining pieces 9,9 attached to both the left and right ends of the engaging piece 8. In Figure 2, reference numeral L5 indicates the fold line formed between the closing plate 6 and the engaging piece 8, and reference numeral L6 indicates the fold line formed between the engaging piece 8 and the retaining piece 9.

[0018] As shown in the enlarged view of FIG. 3, the rear flap 4 is composed of a hexagonal partition flap 10 connected in series via a fold line (third fold line) L3, and a pair of left and right abutment flaps 11, 11 connected to the free end of the partition flap 10. The rear flap 4 is formed so as to straddle the side piece 5e (left side piece) located fifth from the left and the side piece 5f (right side piece) located sixth from the left of the seat body 2. More specifically, the rear flap 4 includes cut lines (first cut lines) 13a, 13a formed in the front-rear direction along the fourth fold line L1d (left ruled line) from the left and the sixth fold line L1f (right ruled line) from the left, cut lines (second cut lines) 13b, 13b running obliquely rearward from the rear ends of these cut lines 13a, 13a toward the central portions in the left-right direction of the side pieces 5e, 5f, and cut lines 13c, 13c (third cut lines) running obliquely forward from the rear ends of these cut lines 13b, 13b toward the fifth fold line L1e (middle ruled line) from the left, and is separated from the side pieces 5e, 5f. The fold line L3 is formed obliquely forward from the front ends of the left and right cut lines 13a, 13a toward the fifth fold line L1e. The fold line (fourth fold line) L4 formed between the partition flap 10 and the abutment flap 11 is formed obliquely rearward so as to connect the middle portions of the cut lines 13a, 13a and the front ends of the cut lines 13c, 13c.

[0019] From the above, the partition flap 10 is formed in a regular hexagonal shape defined by a pair of left and right fold lines L3, L3, a pair of left and right fold lines L4, L4, and the front end portions of a pair of left and right cut lines 13a, 13a extending to the intersection positions of the fold lines L4, L4. Each of the left and right abutment flaps 11 is formed in a trapezoidal shape defined by the cut lines 13b, 13c, the fold line L4, and the rear end portion of the cut line 13a extending to the intersection position of the fold lines L4, L4.

[0020] Figure 4 shows the sales format of the sound-making toy. As shown in the figure, the sound-making toy is sold in the form of a flat plate 14, which is made by folding the blank sheet 1 described above in half. Specifically, the leftmost fold line L1a and the fourth fold line L1d from the left of the blank sheet 1 are folded, and the surface of the first side piece 5a and the back surface of the seventh side piece 5g are glued together to form a folded flat plate 14, which is then sold. By adopting this sales format of the flat plate 14, the buyer can obtain the sound-making toy simply by assembling it along the fold lines L1 to L6, without having to perform troublesome gluing work. In addition, by making it a flat plate 14, it is possible to prevent the sound-making toy from being bulky during transportation and sales.

[0021] Referring to Figures 4, 5(a)(b), and 6, the method for assembling the sound-making toy from the sales form (flat plate 14) shown in Figure 4 will be explained. First, the purchaser applies force from both the left and right sides of the folded flat plate 14 toward the inside (see arrows in Figure 5(a)) to fold each fold line L1a to L1f into a mountain fold, forming a hexagonal cylindrical main body 15 with both the front and back sides open (see imaginary lines in Figure 5(b) and Figure 6). Next, the rear flap 4 is folded toward the inside of the cylindrical main body 15 along fold line L3, and the contact flap 11 is folded toward fold line L4, pressing the contact flap 11 against the inner surface of the main body 15 (the back surface of the side pieces 5b and 5c). This allows the partition flap 10 to form a partition piece 16 that divides the inside of the main body 15. Furthermore, by pressing the contact flap 11 against the inner surface of the main body 15, the bulkhead flap 10 can be supported by bracing it against the inner surface of the main body 15.

[0022] Next, a paper straw 18, which is a sound-making element, is inserted into the cylindrical opening 17 at the front end of the main body 15. Then, the folding piece 7 is folded inward along the fold line L2, and then the closing plate 6 is folded along the fold line L2 to close the cylindrical opening 17 at the front of the main body 15. At the same time, the engaging piece 8 and the retaining piece 9 are folded along the fold lines L5 and L6 and pushed into the cylindrical opening 17. This forms a lid piece 20 that closes the cylindrical opening 17 at the front of the main body 15. In addition, a resonant chamber 21 is formed inside the main body 15, partitioned by the lid piece 20 and the partition piece 16. The paper straw 18 is housed inside this resonant chamber 21.

[0023] Figures 1 and 7 show the completed sound-making toy. This sound-making toy comprises a hexagonal cylindrical main body 15 having a hollow section E inside, a lid piece 20 that closes the cylindrical opening 17 at the front of the main body 15, formed by folding the front flap 3, and a partition piece 16 that divides the hollow section E of the main body 15 in the middle in the front-to-back direction. The partition piece 16 is formed slightly rearward from the center in the front-to-back direction, and a resonant chamber 21 is formed inside the front part of the main body 15, partitioned by the lid piece 20 and the partition piece 16. A paper straw 18, which is a sound-making element, is housed inside the resonant chamber 21. The rear part of the main body 15 becomes a gripping section 22 that is held by the user's fingers. As shown in Figure 1, the fifth fold line L1e of the gripping section 22 is a valley fold, and the gripping section 22 has an irregular hexagonal shape with side pieces 5e and 5f extending inward.

[0024] In the sound-making toy configured as described above, by gripping the handle 22 and shaking the sound-making toy from side to side, the paper straw 18 can collide with the inner surface of the cylindrical wall of the main body 15 that constitutes the resonating chamber 21, producing a rattling sound. Alternatively, the sound-making toy held in the right hand can be struck against the palm of the left hand, or a sound-making toy can be held in each hand and the main bodies 15 of the sound-making toys can be struck against each other to produce a sound. In this case, the sound can be resonated in the resonating chamber 21, producing a resonant sound, so a loud sound can be produced even when the main body 15 is struck with little force. Furthermore, when the sound-making toy is struck in this way, the collision of the paper straw 18 with the inner surface of the resonating chamber 21 can also produce an even louder sound.

[0025] As described above, the sound-making toy according to this embodiment is assembled by folding a flat blank sheet 1 made of paper material, and therefore does not pose a risk of causing environmental problems like stick balloons made of synthetic resin (synthetic rubber) derived from petroleum, which is a fossil resource, and can contribute to reducing environmental burden and conserving resources. In addition to the polygonal cylindrical main body 15 having a hollow part E inside, it is also provided with a lid piece 20 that closes the cylindrical opening 17 at the front of the main body 15 and a partition piece 16 that divides the hollow part E of the main body 15 in the middle in the front-rear direction. As a result, the front end and the middle in the front-rear direction of the hexagonal cylindrical main body 15 can be supported by these lid piece 20 and partition piece 16, increasing the rigidity of the main body 15 and giving it stable strength, so that even if the side of the main body 15 is struck with a stronger force, deformation such as denting of the main body 15 can be suppressed. If the sound-making toy is operated with the gripping part 22 located behind the partition piece 16, the boundary between the gripping part 22 and the part in front of it (resonance chamber 21) can be firmly supported by the partition piece 16, thus preventing deformation such as bending of the main body 15 from occurring at the boundary. Since a resonance chamber 21 is formed inside the main body 15, separated by the lid piece 20 and the partition piece 16, when the side of the main body 15 is struck, the sound is resonated within the resonance chamber 21, producing a resonant sound. Therefore, even when the main body 15 is struck lightly with little force, a loud sound can be generated.

[0026] The rear flap 4, which forms the partition piece 16, comprises a partition flap 10 formed to have the same cross-sectional shape as the hollow portion E and partitioning the hollow portion E, and a contact flap 11 formed at the free end of the partition flap 10 and in contact with the inner surface of the main body 15. By folding the partition flap 10 inward towards the hollow portion E along the third fold line L3 and pressing the contact flap 11 against the inner surface of the main body 15, the partition flap 10 is configured to brace and support the inner surface of the main body 15. Thus, the partition piece 16 can partition the hollow portion E of the main body 15 and brace and support the inner surface of the main body 15. With this, the hollow portion E of the main body 15 can be partitioned with a simple configuration, and the strength of the main body 15 can be reliably increased. Since the contact flap 11 is in contact with the inner surface of the main body 15, it is possible to prevent the bulkhead flap 10 from shifting unintentionally, and to more reliably maintain the bulkhead flap 10 in a braced support position.

[0027] Since the main body 15 is formed in a hexagonal tubular shape, the cross-sectional shape can be made closer to a perfect circle compared to when the main body 15 is formed in a square or triangular tubular shape, thereby increasing the strength of the main body 15. Also, since there are fewer folds compared to an octagonal tubular shape, the sheet body 2 can be folded more easily to assemble the main body 15. When the partition flap 10 is formed in a hexagonal shape defined by the third fold line L3, the fourth fold line L4, and the first notch line 13a extending to the intersection of the fourth fold line L4, the partition flap 10 partitions the hollow part E of the main body 15, and each side of the hexagonal shape of the partition flap 10 is pressed against each piece of the inner surface of the main body 15, thereby bracing and supporting the inner surface of the main body 15, thus providing stable strength to the main body 15.

[0028] If a paper straw 18, which is a sound-generating component that collides with the inner wall of the resonating chamber 21 to produce sound, is housed inside the resonating chamber 21, then by shaking the main body 15, the paper straw 18 can be made to collide with the inner wall of the resonating chamber 21 to generate sound.

[0029] Figure 8 shows a modified example of this embodiment, in which the fifth fold line L1e is folded back in a valley fold until the surfaces of the side pieces 5e and 5f face each other, making the gripping portion 22 rectangular in cross-section. By making the fifth fold line L1e a valley fold in this way, the external dimensions of the gripping portion 22 can be made smaller than when it is a mountain fold, allowing for a firmer grip on the gripping portion 22. The rectangular cross-sectional shape of the gripping portion 22 is less likely to collapse, which also contributes to a firmer grip on the gripping portion 22.

[0030] In the above embodiment, the main body 15 was hexagonal tubular in shape, but the shape of the present invention is not limited to this, and the cross-sectional shape may be polygonal. Specifically, the cross-sectional shape may be triangular, square, pentagonal, or octagonal.

[0031] In the above embodiment, a paper straw 18 was housed inside the resonating chamber 21 as a sound-making element, but the sound-making element is not limited to a paper straw. In fact, the sound-making toy of the present invention may not include a sound-making element. [Explanation of Symbols]

[0032] 1 Blank sheet 2 Seat Body 3 Front flap 4. Rear flap 5 side pieces 5e Left side piece 5f Right side 6 Closing plate 7 Folded pieces 8 Engaging pieces 9 Retaining piece 10. Bulkhead flaps 11 Contact flap 13 Cut lines 13a First cut line 13b Second cut line 13c Third cut line 15 Main body 16 compartments 17 Cylinder opening 18. Sound-making component (paper straw) 20 Lid piece 21 Echo chamber L1 (L1a~L1f) First fold line L2 Second fold line L3 Third fold line L1d Left-turn rule L1e Center-fold ruled line L1f Right-turn rule

Claims

1. A sound-making toy that is assembled by folding a flat blank sheet (1) made of paper material, The blank sheet (1) consists of a rectangular sheet body (2) that is long in the front-to-back direction, a front flap (3) that is attached to the front end of the sheet body (2) in a projecting manner, and a rear flap (4) that is formed in a cantilever shape by partially cutting the rear end of the sheet body (2). The sheet body (2) is folded along multiple first fold lines (L1) formed in the front-to-back direction, and the left and right sides of the sheet body (2) are joined together to form a polygonal cylindrical body (15) having a hollow part (E) inside, A lid piece (20) is formed by folding the front flap (3) along a second fold line (L2) formed between it and the sheet body (2), thereby closing the cylindrical opening (17) at the front of the main body (15), A partition piece (16) is formed by folding the rear flap (4) along a third fold line (L3) formed between the sheet body (2) and the rear flap (4), thereby dividing the hollow portion (E) of the main body (15) in the middle in the front-rear direction, Equipped with, A sound-making toy characterized in that a resonant chamber (21) is formed inside the main body (15), partitioned by a lid piece (20) and a partition piece (16).

2. The rear flap (4) comprises a partition flap (10) formed to have the same cross-sectional shape as the hollow portion (E) and partitioning the hollow portion (E), and a contact flap (11) formed at the free end of the partition flap (10) and in contact with the inner surface of the main body portion (15). The sound-making toy according to claim 1, wherein the partition flap (10) is folded inward toward the hollow portion (E) along a third fold line (L3), and the contact flap (11) is pressed against the inner surface of the main body portion (15), thereby configuring the partition flap (10) to brace and support the inner surface of the main body portion (15).

3. The sheet body (2) has six first fold lines (L1 (L1a to L1f)) formed at equally spaced positions in the left-right direction, and the main body (15) is formed in a hexagonal cylindrical shape. When any three adjacent first fold lines (L1) in the left-right direction are defined as a left-fold line (L1d), a center-fold line (L1e), and a right-fold line (L1f), and when the side of the sheet body (2) enclosed by the left-fold line (L1d) and the center-fold line (L1e) is defined as the left side (5e), ​​and the side of the sheet body (2) enclosed by the right-fold line (L1f) and the center-fold line (L1e) is defined as the right side (5f), The rear flap (4) constituting the partition piece (16) is separated from the left and right side pieces (5e and 5f) by a first cut line (13a, 13a) formed in the front-rear direction along the left and right fold lines (L1d and L1f), a second cut line (13b, 13b) running diagonally backward from the rear end of the first cut line (13a) toward the left and right center of the left and right side pieces (5e and 5f), and a third cut line (13c, 13c) running diagonally forward from the rear end of the second cut line (13b, 13b) toward the middle fold line (L1e). The third fold line (L3) is formed diagonally forward from each of the front ends of the left and right first cut lines (13a) toward the center fold line (L1e). A fourth fold line (L4) formed between the bulkhead flap (10) and the contact flap (11) is formed diagonally backward, connecting the middle of the first cut line (13a) to the front end of the third cut line (13c). The sound-making toy according to claim 2, wherein the partition flap (10) is formed in a hexagonal shape defined by a pair of left and right third fold lines (L3, L3), a pair of left and right fourth fold lines (L4, L4), and a pair of left and right first cut lines (13a, 13a) that extend to the intersection of the fourth fold line (L4).

4. The sound-making toy according to claim 1, wherein a sound-making member (18) that generates a sound by colliding with the inner wall of the sound-making chamber (21) is housed inside the sound-resonating chamber (21).

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