Electronic cymbal

Abstract

The present invention provides an electronic cymbal capable of improving sensitivity of striking an edge sensor from a lateral direction thereof and improving designability by suppressing an increase in thickness dimension of an edge part of a cover.　An electronic cymbal 1 includes: a frame 2 having an attachment surface 2c formed on an upper surface of an outer edge part and an inner area surface 2d formed on the inside of the attachment surface 2c; a cover 3 formed to cover an upper surface of the frame 2 and capable of being struck by a player; and an edge sensor S1 attached to the attachment surface 2c formed on the frame 2 and detecting striking of an edge part a of the cover 3. In the frame 2, a projection part 2e projecting upward from the inner area surface 2d toward the outer edge side is formed between the inner area surface 2d and the attachment surface 2c, and the attachment surface 2c is inclined downward toward the outer edge side at an angle larger than that of the inner area surface 2d.

Description

Electronic Cymbal

[0001] The present invention relates to an electronic cymbal that is capable of detecting a strike by a player and outputting a detection signal of the detected strike.

[0002] As disclosed in Patent Document 1, for example, a conventional electronic cymbal includes a disk-shaped frame with a mounting surface formed on the upper surface of its outer edge, a cover formed to cover the upper surface of the frame and allowing the player to strike it, and an edge sensor attached to the mounting surface of the frame to detect strikes on the edge of the cover. When a player strikes the striking surface of the cover of the electronic cymbal with a stick, the vibration sensor detects the strike and outputs it to the outside, allowing the player to play in the same way as an acoustic cymbal.

[0003] In particular, in conventional electronic cymbals, the mounting surface formed on the outer edge of the frame is sloped downward more sharply than the inner surface of the frame, and the edge sensor attached to the mounting surface is oriented laterally, which makes it possible to improve the sensitivity of the edge of the cover to lateral strikes.

[0004] JP 2023-146962 A

[0005] However, in the above-mentioned conventional electronic cymbals, although it is possible to improve the sensitivity of the edge of the cover to lateral strikes by orienting the edge sensor attached to the mounting surface of the frame horizontally, if the mounting surface of the frame is sloped downward significantly, it is necessary to increase the thickness of the edge of the cover that covers the frame, which differs from the thin appearance of an acoustic cymbal and results in a problem of poor design.

[0006] The present invention has been made in consideration of the above circumstances, and aims to provide an electronic cymbal that can improve the sensitivity of the edge sensor to strikes from the side, and can also improve the design by preventing the thickness of the edge portion of the cover from increasing.

[0007] The invention described in claim 1 is an electronic cymbal comprising a frame that slopes downward from the center toward the outer edge and has an attachment surface formed on the upper surface of the outer edge and an inner area surface formed inward from the attachment surface; a cover that covers the upper surface of the frame and can be struck by a player; and an edge sensor that is attached to the attachment surface formed on the frame and detects strikes on the edge of the cover, wherein the frame has a protrusion that protrudes upward from the inner area surface toward the outer edge between the inner area surface and the attachment surface, and the attachment surface slopes downward toward the outer edge at a larger angle than the inner area surface.

[0008] The invention described in claim 2 is an electronic cymbal comprising a frame that slopes downward from the center toward the outer edge and has an attachment surface formed on the upper surface of the outer edge and an inner area surface formed inward from the attachment surface; a cover that covers the upper surface of the frame and can be struck by a player; and an edge sensor that is attached to the attachment surface formed on the frame and detects strikes on the edge of the cover, wherein the frame has a protrusion that protrudes upward from the inner area surface toward the outer edge between the inner area surface and the attachment surface, and the attachment surface slopes downward toward the outer edge at a greater angle than the surface of the cover directly above it.

[0009] The invention of claim 3 is the electronic cymbal of claim 1 or claim 2, characterized in that the protrusion has a step shape formed between the inner area surface and the mounting surface.

[0010] The invention of claim 4 is characterized in that, in the electronic cymbal of claim 1 or claim 2, the protrusion has a slope shape formed over a predetermined dimension between the inner area surface and the mounting surface.

[0011] The invention described in claim 5 is characterized in that, in the electronic cymbal described in claim 1 or claim 2, the frame has a downwardly protruding locking portion formed on the underside of the area where the protrusion is formed, and the locking portion locks onto the end of the cover.

[0012] The invention described in claim 6 is an electronic cymbal described in claim 1 or claim 2, characterized in that the frame has a convex portion that protrudes downward on the underside of the outer edge, and the convex portion fits into a recess formed in the cover.

[0013] According to the invention of claim 1, the frame has a protrusion formed between the inner area surface and the mounting surface that protrudes upward from the inner area surface toward the outer edge, and the mounting surface is inclined downward toward the outer edge at an angle greater than that of the inner area surface, thereby improving the sensitivity of the edge sensor to tapping from the lateral direction and preventing the thickness dimension of the edge portion of the cover from becoming too large, thereby improving the design.

[0014] According to the invention of claim 2, the frame has a protrusion formed between the inner area surface and the mounting surface that protrudes upward from the inner area surface toward the outer edge, and the mounting surface is inclined downward toward the outer edge at a larger angle than the surface of the cover directly above it, thereby improving the sensitivity of the edge sensor to tapping from the lateral direction and preventing the thickness dimension of the edge portion of the cover from becoming too large, thereby improving the design.

[0015] According to the invention of claim 3, the protrusion is formed in a stepped shape between the inner area surface and the mounting surface. By forming a stepped shape on the frame, the area of ​​the thin-walled portion of the cover can be minimized while preventing the thickness dimension of the edge portion of the cover from increasing, thereby improving the design.

[0016] According to the invention of claim 4, the protrusion has a sloped shape formed over a predetermined distance between the inner area surface and the mounting surface. Therefore, by forming a sloped shape on the frame, stress concentration on the frame during striking can be reduced while preventing the thickness dimension of the edge portion of the cover from increasing, thereby improving the design.

[0017] According to the invention of claim 5, the frame has a downwardly protruding locking portion formed on the underside of the portion where the protrusion is formed, and the locking portion locks onto the end of the cover, so that the cover can be maintained in an attached state to the frame and the portion where the protrusion is formed can be made thicker, thereby improving the rigidity of that portion.

[0018] According to the invention of claim 6, the frame has a convex portion that protrudes downward on the underside of the outer edge, and the convex portion fits into a recess formed in the cover, so that the positioning of the mounting surface can be accurately maintained by the fitting of the convex portion into the recess.

[0019] 2. A perspective view showing the overall appearance of an electronic cymbal according to an embodiment of the present invention. 3-view diagram showing the electronic cymbal. 4. A cross-sectional view taken along line III-III in FIG. 2. 5. A cross-sectional view taken along line IV-IV in FIG. 2. 6. A cross-sectional view taken along line V-V in FIG. 2. 7. An enlarged cross-sectional view showing the vicinity of the outer edge of the frame of the electronic cymbal. 8. An exploded perspective view showing the electronic cymbal. 9. An exploded perspective view showing the electronic cymbal. 10. A three-view diagram showing the frame of the electronic cymbal. 11. A back view showing the electronic cymbal with the cover member removed. 12. An enlarged cross-sectional view showing the vicinity of the outer edge of the frame of an electronic cymbal according to another embodiment of the present invention. 13. A cross-sectional view showing an electronic cymbal according to yet another embodiment of the present invention.

[0020] An embodiment of the present invention will be described in detail below with reference to the drawings. An electronic cymbal 1 according to this embodiment is capable of detecting a strike by a player and outputting a detection signal of the detected strike. As shown in Figures 1 to 5, the electronic cymbal 1 comprises a frame 2 to which an edge sensor S1, a cup sensor S2, and a vibration sensor S3 are attached, and a cover 3 attached to cover the top of the frame 2.

[0021] The cover 3 is made of an elastic material such as silicone rubber or synthetic rubber, and as shown in Figures 2 to 5, it is formed to cover the upper surface of the frame 2 and allows the player to strike it with a stick. The cover 3 has a central hole 3a formed in the center through which a support stand (not shown) can be inserted, and as shown in Figures 1 and 2, it has a striking surface made up of a cup portion b formed in the central bulge, an edge portion a formed on the outer edge (periphery), and a bow portion c consisting of the area between the edge portion a and the cup portion b.

[0022] The frame 2 is made of a hard resin such as nylon or ABS, and as shown in Figures 2 to 5 and 9, it slopes downward from the center to the outer edge, and has a mounting surface 2c formed on the upper surface of the outer edge and an inner area surface 2d formed inward from the mounting surface 2c. An opening is formed in the center of the frame 2, and a central edge 2a is formed on the edge of the opening. A shaft sleeve 7 is attached to this central edge 2a, as shown in Figures 2 to 5.

[0023] A plurality of sensor mounting portions M for mounting the vibration sensors S3 are formed on the rear surface of the frame 2. These sensor mounting portions M are formed at positions that are rotationally symmetrical about the central axis of the frame 2 and on concentric circles. Furthermore, screw holes B into which mounting screws N can be inserted are formed on the rear surface of the frame 2 at positions inside the sensor mounting portions M.

[0024] 10, a vibration sensor S3 is attached to each of the plurality of sensor attachment portions M on the frame 2. Furthermore, as shown in FIG. 7, an annular edge sensor S1 is attached to the attachment surface 2c on the outer edge of the frame 2, and an annular cup sensor S2 is attached to the center of the frame 2 (at a position corresponding to the cup portion b of the cover 3). The vibration sensor S3 detects vibrations of the frame 2 and is therefore capable of detecting a tap on the cover 3.

[0025] Furthermore, as shown in Fig. 8, a substrate 5 having an output cable 8 extending therefrom is fixed to the rear surface of the center of the frame 2. The substrate 5 is electrically connected to the edge sensor S1, the cup sensor S2, and the vibration sensor S3, and when the vibration sensor S3 detects a tap, the detection signal is transmitted to the substrate 5 and then output to the outside via the output cable 8. The substrate 5 according to this embodiment is fixed to the frame 2 with a plurality of fixing screws P (see Fig. 8), and the rear surface of the frame 2 is formed with screw holes D (see Figs. 9 and 10) into which the fixing screws P can be inserted and screwed.

[0026] When the player strikes the striking surface (edge ​​portion a, cup portion b, and bow portion c) of the cover 3 with a stick to vibrate the electronic cymbal 1, the strength of the strike is detected by the vibration sensor S3, and an electrical signal corresponding to that strength is transmitted to the output cable 8 via the circuit board 5 and output to an external signal processing device (not shown) via the connection jack 9.

[0027] The connection jack 9 according to this embodiment has a first connection jack 9a capable of outputting detection signals from the vibration sensor S3 and the edge sensor S1, and a second connection jack 9b capable of outputting detection signals from the cup sensor S2. When an external cable (not shown) is connected only to the first connection jack 9a, the detection signals from the vibration sensor S3 and the edge sensor S1 are transmitted to an external signal processing device, and tapping can be detected by the detection signal from the vibration sensor S3. When an external cable is connected only to the second connection jack 9b, the detection signal from the cup sensor S2 is transmitted to the external signal processing device, but the detection signal from the vibration sensor S3 is not transmitted, making it impossible to detect tapping.

[0028] In the connection jack 9 according to this embodiment, the first connection jack 9a and the second connection jack 9b are integrated with a step, and in this embodiment in particular, the first connection jack 9a is formed to protrude more than the second connection jack 9b. This allows the first connection jack 9a to be intuitively given priority when connecting an external cable to the connection jack 9, and makes it easy to connect the connection jack 9 to an external cable even in a dark environment such as a stage.

[0029] The edge sensor S1 is capable of detecting a tap on the edge portion a of the cover 3 and outputting an ON signal, and the cup sensor S2 is capable of detecting a tap on the cup portion b of the cover 3 and outputting an ON signal. This allows the tap on the edge portion a or the cup portion b to be identified depending on the ON / OFF states of the edge sensor S1 and the cup sensor S2.

[0030] For example, if a strike is detected by the vibration sensor S3 when the edge sensor S1 and the cup sensor S2 are off, the external signal processing device will determine that the strike has been made on the bow portion c and will output a musical tone corresponding to the bow portion c. If a strike is detected by the vibration sensor S3 when the edge sensor S1 or the cup sensor S2 is on, the external signal processing device will determine that the strike has been made on the edge portion a or the cup portion b and will output an appropriate musical tone according to the strike position.

[0031] Furthermore, a cover member 4 for covering the vibration sensor S3 and the circuit board 5 is attached to the back surface of the frame 2 according to this embodiment. The cover member 4 is made of a hard resin such as nylon or ABS, and is fixed to the back surface of the frame 2 with a plurality of mounting screws N (see FIGS. 7 and 8). As shown in FIG. 7, the cover member 4 is integrally formed with a plurality of accommodating recesses 4a along the circumferential direction, and each of the accommodating recesses 4a can accommodate an elastic member 6 made of rubber or the like.

[0032] As shown in Fig. 4, the elastic member 6 is a cylindrical member with a recess 6a formed in its center, and a boss 2b formed on the frame 2 that protrudes can fit into the recess 6a. As a result, after aligning the cover member 4 with the center of the back side of the frame 2, the cover member 4 is fixed to the frame 2 by inserting and screwing a plurality of mounting screws N into the screw holes B (see Fig. 10), as shown in Fig. 4, the boss 2b fits into the recess 6a of the elastic member 6 and provides elastic support. In this embodiment, the cover member 4 is attached without protruding from the frame 2, thereby improving the design.

[0033] On the other hand, as shown in Fig. 10, the screw hole B according to this embodiment is formed inside an imaginary circle α connecting the centers of the vibration sensors S3, and as shown in Fig. 3, by inserting and screwing a mounting screw N through the screw hole B, the cover member 4 can be fixed and supported inside the imaginary circle α. Note that the fixing position (screw hole D) of the substrate 5 is also set inside the imaginary circle α, similar to the fixing position (screw hole B) of the cover member 4. This makes it possible to prevent the vibrations transmitted to the vibration sensor S3 from being impeded by fixing the cover member 4 and the substrate 5.

[0034] 6, the outer edge of the cover 3 is folded over to cover the top and bottom surfaces of the mounting surface 2c of the frame 2, and a pressing portion 3b is formed to protrude from the edge of the cover 3 at a position facing the edge sensor S1. When the player strikes the edge a of the cover 3 with a stick, the pressing portion 3b presses the edge sensor S1, causing it to output an ON signal.

[0035] 6, the frame 2 according to this embodiment has a protrusion 2e formed between the inner area surface 2d and the mounting surface 2c, which protrudes upward from the inner area surface 2d toward the outer edge (left side in the figure), and the mounting surface 2c is inclined downward toward the outer edge at a larger angle than the inner area surface 2d (inclination angle of the mounting surface 2c > inclination angle of the inner area surface 2d). In other words, the inclination angle of the mounting surface 2c with respect to the horizontal direction is larger than the inclination angle of the inner area surface 2d with respect to the horizontal direction.

[0036] 6, the frame 2 according to this embodiment has a protrusion 2e formed between the inner area surface 2d and the mounting surface 2c that protrudes upward from the inner area surface 2d toward the outer edge (left side in the figure), and the mounting surface 2c is inclined downward toward the outer edge at a larger angle than the surface of the cover 3 immediately above it (the inclination angle of the mounting surface 2c > the inclination angle of the surface of the cover 3 located immediately above the mounting surface 2c). In other words, the inclination angle of the mounting surface 2c with respect to the horizontal direction is larger than the inclination angle of the surface of the cover 3 immediately above the mounting surface 2c with respect to the horizontal direction.

[0037] The protrusion 2e according to this embodiment has a stepped shape formed between the inner surface 2d and the mounting surface 2c, with the beginning of the mounting surface 2c (the right end in FIG. 6) positioned higher than the end of the inner surface 2d (the left end in FIG. 6). This allows the thickness H of the outer edge of the electronic cymbal 1 (the outer edge of the cover 3) to be small even if the downward slope of the mounting surface 2c is increased.

[0038] Furthermore, in the frame 2 according to this embodiment, a locking portion 2g is formed on the underside of the portion where the protrusion 2e is formed, and the locking portion 2g is adapted to lock onto the end 3d of the cover 3 (the end 3d of the portion folded back at the outer edge of the cover 3). This makes it possible to maintain the attachment state of the cover 3 to the frame 2, and also makes it possible to thicken the portion where the protrusion 2e is formed, thereby improving the rigidity of that portion.

[0039] Furthermore, the frame 2 according to this embodiment has a protrusion 2f that protrudes downward from the lower surface of the outer edge, and the protrusion 2f is adapted to fit into a recess 3c formed in the cover 3. This allows the positioning of the mounting surface 2c to be accurately maintained by fitting the protrusion 2f into the recess 3c.

[0040] According to this embodiment, the frame 2 has a protrusion 2e formed between the inner area surface 2d and the mounting surface 2c that protrudes upward from the inner area surface 2d toward the outer edge, and the mounting surface 2c is inclined downward toward the outer edge at an angle greater than that of the inner area surface 2d.Therefore, the edge sensor S1 can be oriented laterally relative to the inner area surface 2d, which improves the sensitivity of the edge sensor S1 to tapping from the lateral direction and prevents the thickness dimension H of the edge portion a of the cover 3 from becoming too large, thereby improving the design.

[0041] Furthermore, the frame 2 has a protrusion 2e formed between the inner area surface 2d and the mounting surface 2c that protrudes upward from the inner area surface 2d toward the outer edge, and the mounting surface 2c is inclined downward toward the outer edge at a larger angle than the surface of the cover 3 directly above it. This allows the edge sensor S1 to be oriented laterally relative to the upper surface of the cover 3, improving the sensitivity of the edge sensor S1 to lateral strikes and preventing the thickness dimension H of the edge portion a of the cover 3 from becoming too large, thereby improving the design.

[0042] In particular, the protrusion 2e according to this embodiment has a stepped shape formed between the inner surface 2d and the mounting surface 2c. By forming a stepped shape on the frame 2, the area of ​​the thin-walled portion of the cover 3 can be minimized while suppressing an increase in the thickness dimension H of the edge portion a of the cover 3, thereby improving the design. However, instead of the stepped protrusion 2e, a protrusion 2e' having a sloped shape formed over a predetermined distance between the inner surface 2d and the mounting surface 2c may be used, as shown in FIG. 11. In this case, forming a sloped shape on the frame 2 reduces stress concentration on the frame 2 during hammering, while suppressing an increase in the thickness dimension H of the edge portion a of the cover 3, thereby improving the design.

[0043] While the present embodiment has been described above, the present invention is not limited to this, and for example, as shown in Fig. 12, predetermined portions of the frame 2 and the cover 3 may have curved portions A1 and A2 that are curved downward. In this case, an inner area surface 2d is formed on the outside of the curved portions A1 and A2, and a protrusion 2e (2e') is formed between the inner area surface 2d and the mounting surface 2c.

[0044] The present invention can also be applied to devices with different external shapes or devices with additional functions, provided that they have the same gist as the present invention.

[0045] REFERENCE SIGNS LIST 1 Electronic cymbal 2 Frame 2a Central edge 2b Boss portion 2c Mounting surface 2d Inner area surface 2e Protrusion 2e' Protrusion 2f Convex portion 2g Locking portion 3 Cover 3a Central hole 3b Pressing portion 3c Convex portion 3d End portion 4 Lid member 4a Storage concave portion 5 Substrate 6 Elastic member 7 Shaft sleeve 8 Output cable 9 Connection jack 9a First connection jack 9b Second connection jack S1 Edge sensor S2 Cup sensor S3 Vibration sensor a Edge portion b Cup portion c Bow portion H Thickness dimension α Virtual circle N Mounting screw P Fixing screw B Screw hole D Screw hole M Sensor mounting portion

Claims

1. An electronic cymbal comprising: a frame that slopes downward from the center toward the outer edge, and has an attachment surface formed on the upper surface of the outer edge and an inner area surface formed inward from the attachment surface; a cover that covers the upper surface of the frame and can be struck by a player; and an edge sensor that is attached to the attachment surface formed on the frame and detects strikes on the edge of the cover, wherein the frame has a protrusion that protrudes upward from the inner area surface toward the outer edge between the inner area surface and the attachment surface, and the attachment surface slopes downward toward the outer edge at a larger angle than the inner area surface.

2. An electronic cymbal comprising: a frame that slopes downward from the center toward the outer edge, and has an attachment surface formed on the upper surface of the outer edge and an inner area surface formed inward from the attachment surface; a cover that covers the upper surface of the frame and can be struck by a player; and an edge sensor that is attached to the attachment surface formed on the frame and detects strikes on the edge of the cover, wherein the frame has a protrusion that protrudes upward from the inner area surface toward the outer edge between the inner area surface and the attachment surface, and the attachment surface slopes downward toward the outer edge at a larger angle than the surface of the cover directly above it.

3. An electronic cymbal according to claim 1 or 2, characterized in that the protrusion is formed in a stepped shape between the inner area surface and the mounting surface.

4. An electronic cymbal according to claim 1 or 2, characterized in that the protrusion has a sloped shape formed over a predetermined distance between the inner area surface and the mounting surface.

5. An electronic cymbal as described in claim 1 or claim 2, characterized in that the frame has a downwardly protruding locking portion formed on the underside of the portion where the protrusion is formed, and the locking portion locks onto the end of the cover.

6. An electronic cymbal as claimed in claim 1 or 2, characterized in that the frame has a convex portion that protrudes downward on the underside of the outer edge, and the convex portion fits into a concave portion formed in the cover.

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