Electronic cymbal and bowl sensor placement method

Abstract

Provided is an electronic cymbal and a bowl portion sensor arrangement method that can inhibit peeling of a bowl portion sensor. An electronic cymbal (1) has a bowl portion sensor (6) that detects a strike on a bowl portion (2) divided into an inner peripheral sensor (6a) and an outer peripheral sensor (6b), so the width in the diameter direction of each is reduced. Therefore, the repulsive force (restoring force) of the inner peripheral sensor (6a) and the outer peripheral sensor (6b) that are bent into a conical shape in accordance with the shape of the side surface of a frame bowl portion (4a) to return to the original sheet shape is reduced. By this means, peeling of the inner peripheral sensor (6a) and the outer peripheral sensor (6b) that are attached to the frame bowl portion (4a) from the frame bowl portion (4a) can be inhibited. In addition, by reducing the amount of deformation in the case where the inner peripheral sensor (6a) and the outer peripheral sensor (6b) are bent, peeling of the upper and lower films to which conductive paste is applied in the inner peripheral sensor (6a) and the outer peripheral sensor (6b) can also be inhibited.

Description

Technical Field

[0001] This invention relates to a method for setting up an electronic cymbal and a bowl-shaped sensor. Background Technology

[0002] Patent document 1 discloses an electronic cymbal in which a conical bowl (cymbal core) is formed in a frame 105, and a plate-shaped bowl sensor is disposed in the bowl. Since the bowl is formed by the frame, the feeling of striking the bowl is hardened, which can be close to the feeling of striking the bowl of an actual cymbal.

[0003] [Existing technical documents]

[0004] [Patent Literature]

[0005] [Patent Document 1] U.S. Patent Application Publication No. 2016 / 0196811 (e.g., paragraphs 0057-0059) Figures 6-9 wait) Summary of the Invention

[0006] [The problem the invention aims to solve]

[0007] However, since the bowl sensor is positioned along the diameter of the conical bowl, the originally sheet-like bowl sensor needs to be deformed into a conical shape. Therefore, there are concerns that the deformed conical bowl sensor may peel off from the frame, or the films on the top and bottom of the bowl sensor may peel off, depending on impacts to the bowl, temperature, or humidity.

[0008] This invention was developed to address the aforementioned problems, and its purpose is to provide an electronic cymbal and a method for setting the bowl sensor that can suppress the peeling off of the bowl sensor.

[0009] [Technical means to solve the problem]

[0010] To achieve the aforementioned objective, the electronic cymbal of the present invention comprises: a circular plate-shaped frame; a frame bowl formed at the top center of the frame; a bowl sensor attached to the frame bowl along the circumferential direction and detecting impacts to the frame bowl; and a cover covering the frame and the bowl sensor, the surface of which is formed as an impact surface, and the bowl sensor being separated at least in the diametrical direction of the frame bowl.

[0011] The method for setting the bowl sensor of the present invention is a method for setting the bowl sensor in the frame bowl of an electronic cymbal, the electronic cymbal comprising: a circular plate-shaped frame; a frame bowl formed at the top center of the frame; and a bowl sensor attached to the frame bowl along the circumferential direction and detecting impacts to the frame bowl, and the bowl sensor being separated and set apart at least in the diametrical direction of the frame bowl. Attached Figure Description

[0012] Figure 1 This is a top view of an electronic cymbal according to one embodiment.

[0013] Figure 2 yes Figure 1 A cross-sectional view of the electron cymbal along section II-II.

[0014] Figure 3 (a) is a side view of the electronic cymbal with the cover omitted. Figure 3 (b) is a top view of the electronic cymbal with the cover omitted.

[0015] Figure 4 (a) is to Figure 2 A magnified cross-sectional view of the electron cymbal in section IVa. Figure 4 (b) indicates self Figure 4 The enlarged cross-sectional view of the electron cymbal in state (a), which is struck by a cymbal stick.

[0016] Figure 5 (a) is a bottom view of the electronic cymbal. Figure 5 (b) is a bottom view of the electronic cymbal with the case removed.

[0017] Figure 6 yes Figure 1 A cross-sectional view of an electron cymbal along the VI-VI section line.

[0018] Figure 7 (a) is a top view of the box. Figure 7 (b) is Figure 7 A cross-sectional view of the box along section lines VIIb-VIIb in (a).

[0019] Figure 8 (a) is a top view of the bowl-shaped sensor in the modified example. Figure 8 (b) is a top view of the bowl-shaped sensor in another variation. Figure 8 (c) is a cross-sectional view of the electronic cymbals in the frame of the modified example. Figure 8 (d) is a cross-sectional view of the electronic cymbals in another variation of the frame.

[0020] Figure 9(a) is a cross-sectional view of the electronic cymbal at the locking part in the modified example. Figure 9 (b) is a cross-sectional view showing the electron cymbal within the modified example. Figure 9 (c) is a cross-sectional view showing the electronic cymbal of the support and hook parts in the modified example. Figure 9 (d) is a cross-sectional view of the hook and support column of the electronic cymbal in another variation.

[0021] [Explanation of Symbols]

[0022] 1: Electronic cymbals (electronic percussion instruments)

[0023] 3: Bow section (cymbal face)

[0024] 4: Framework

[0025] 4a, 40a, 41a: Frame bowl section

[0026] 4b1: Ontology Department

[0027] 4b2: Flexion

[0028] 4b3: Peripheral part

[0029] 4c: Frame-side mounting section

[0030] 4c1: Support section (part of the frame-side mounting section)

[0031] 4cb2: Protruding storage section (part of the frame-side mounting section)

[0032] 5: Cover

[0033] 5a, 50a, 51a: Cup section

[0034] 5a3, 51a3: Connecting part

[0035] 5b1: Upper cover

[0036] 5b2: Lower cover

[0037] 5b3: Protrusion

[0038] 5b4: Joint

[0039] 6: Bell sensor (cymbal core sensor)

[0040] 6c: Connecting part

[0041] 7b: Edge sensor (sensor)

[0042] 8, 80, 81, 82: Case

[0043] 8a, 82a: Box outer wall

[0044] 8b, 82b: Hook and hook part (part of the side mounting part of the box)

[0045] 8c: Inner wall of the box

[0046] 8d: Inner packaging section (part of the side mounting section of the box)

[0047] 8e, 82e: Support columns

[0048] 8f: Support column installation section

[0049] 8g: Bottom wall of the box

[0050] 8g1: Thick-walled portion

[0051] 8h: Protection Department

[0052] L1: Thickness dimension of the lower cover

[0053] L2: Thickness dimension of the upper cover

[0054] L3: Thickness dimension of the joint

[0055] S: Space Detailed Implementation

[0056] The preferred embodiments will now be described with reference to the accompanying drawings. Figure 1 This is a top view of an electronic cymbal 1 according to one embodiment. The electronic cymbal 1 is an electronic percussion instrument that simulates a cymbal, including: a bowl 2, which is circular in view and located at its center, and a bow 3 located on the outer side of the bowl (cymbal center) 2. A logo L, such as the manufacturer's name or product name, is formed on the bow 3. The player plays the instrument by striking the area near the logo L, which is based on the bowl 2, on the upper surface of the bow 3.

[0057] If the performer uses cymbals or similar instruments to strike part 2 of the bowl, then the striking of part 2 is performed by... Figure 2 The cup-shaped sensor 6, described later, detects whether an impact occurs on the upper surface of the bowl 3. If the bowl 3 is struck, the impact is detected by an impact sensor (not shown). Conversely, if the outer edge of the bowl 3 is struck, the impact is detected by... Figure 4 (a) and Figure 4 The edge sensor 7, described later in (b), is used for detection. That is, the percussion detection device in the electronic percussion instrument is constituted by the aforementioned sensors (the mounting structure of each sensor is described later). The percussion detected by the bowl sensor 6, the percussion sensor, and the edge sensor 7 is converted into an electrical signal and input to a sound source device (not shown), thereby generating a musical tone corresponding to the percussion of the bowl 2 and the soundbox 3.

[0058] Reference Figures 2-7(b) The structure of the electronic cymbal 1 will be explained. First, the mounting structure of the bowl sensor 6 will be explained. Figure 2 yes Figure 1 A cross-sectional view of electron cymbal 1 along section II-II. (See diagram below.) Figure 2 As shown, the electronic cymbal 1 includes: a reinforced plastic frame 4 forming a skeleton, a cover 5, a bowl sensor 6 and an edge sensor 7 disposed on the upper surface of the frame 4, and a synthetic rubber box 8 disposed on the bottom surface of the frame 4 and protecting the electronic components of the electronic cymbal 1.

[0059] A frame bowl portion 4a is formed in the frame 4 at a position corresponding to the bowl portion 2, and a frame chamber portion 4b is formed in the frame 4 at a position corresponding to the chamber portion 3. The frame chamber portion 4b is a portion of the frame 4 that is located further outward than the frame bowl portion 4a, and is connected by a limiting portion 4d described later (see reference). Figure 2 The frame bowl 4a is connected to the outer edge of the frame bowl 4a (the enlarged portion). The frame bowl 4a is formed into a cone shape that tapers upwards from the side to the front end, and a bowl sensor 6 for detecting impacts to the bowl 2 is attached to the side of the frame bowl 4a using double-sided tape.

[0060] The bowl-shaped sensor 6 is a sensor on which conductive paste is coated on a polyethylene terephthalate (PET) film. The conductive pastes are then bonded together vertically, forming a sheet. When the bowl-shaped sensors 6 are pushed together by impact or other means, and the upper and lower conductive pastes come into contact, an electrical signal is output from the bowl-shaped sensor 6.

[0061] Because the side of the frame bowl 4a is conical, the shape of the side in the cross-section of the frame bowl 4a is straight. By attaching a plate-shaped bowl sensor 6 to the frame bowl 4a as described above, the bowl sensor 6 can be made to be in close contact with the frame bowl 4a in the diametrical direction.

[0062] Cover 5 is a synthetic rubber component that covers the upper part of frame 4 and forms the striking surface of the electronic cymbal 1. Cover 5 is attached to frame 4 using double-sided tape; specifically, double-sided tape is used to attach the cover 5 to the upper surface of frame 4, specifically to the cantilever section 3 (see reference 3). Figure 1 The corresponding part, and the cover 5 and the hall 3 (refer to) Figure 1 Attach it to the corresponding position.

[0063] In the cover 5, at the position corresponding to the bowl portion 2, a frame bowl portion 4a and a cover bowl portion 5a covering the bowl portion sensor 6 are formed. In the cover 5, at the position corresponding to the canopy portion 3, a frame canopy portion 4b and a canopy portion 5b covering the edge portion sensor 7 are formed. The cover bowl portion 5a is formed into a hemispherical (bowl-shaped) shape with its surface, i.e., the surface struck by the cymbal or the like, protruding upwards. This allows the surface of the cover bowl portion 5a, i.e., the surface of the bowl portion 2, to be formed on the actual cymbal to match the shape of the bowl portion.

[0064] On the back side of the cup portion 5a, that is, on the surface facing the frame cup portion 4a and the cup sensor 6, and at the position facing the cup sensor 6, a protruding protrusion 5a1 is formed. The surface of the protrusion 5a1 facing the cup sensor 6 (the facing surface) is formed in a conical shape, consistent with the shape of the frame cup portion 4a where the cup sensor 6 is located. Furthermore, the protrusion 5a1 is formed such that its facing surface is parallel to the cup sensor 6. Additionally, the protrusion 5a1 is formed with a gap between its facing surface and the upper surface of the cup sensor 6, the size of which is set to be 0.3 mm to 0.8 mm.

[0065] When the cup portion 5a is struck, it bends, and the gap between the protrusion 5a1 and the cup sensor 6 disappears. The cup sensor 6 then presses against the protrusion 5a1, transmitting the impact to it. At this time, the opposing surfaces of the protrusion 5a1 are formed in a manner consistent with the shape of the frame cup portion 4a where the cup sensor 6 is located, and furthermore, they are formed so that the opposing surfaces of the protrusion 5a1 are parallel to the cup sensor 6. Therefore, the cup sensor 6 is pushed against each other by the parallel surfaces of the protrusion 5a1 and the frame cup portion 4a. This causes the conductive paste on the upper and lower surfaces of the cup sensor 6 to push against each other from top to bottom, thus ensuring that the impact on the cup portion 5a is properly transmitted to the cup sensor 6.

[0066] By forming a gap between the opposing surface of the protrusion 5a1 and the bowl sensor 6, contact between the protrusion 5a1 and the bowl sensor 6 is suppressed when an object other than the bowl portion 5a, such as the canopy 3, is struck. This suppresses false detections by the bowl sensor 6 when an object other than the bowl portion 5a is struck.

[0067] Furthermore, the gap between the opposing surface of the protrusion 5a1 and the bowl sensor 6 is set to 0.3mm to 0.8mm. In this way, even if the impact on the bowl 5a is weak (i.e., the impact intensity is weak), the protrusion 5a1 can be squeezed into the bowl sensor 6, thereby improving the sensitivity to weak impacts.

[0068] In the cup portion 5a, a U-shaped recess 5a2 is formed further inward than the protrusion 5a1 on the inner circumference side. By striking the cup portion 5a, the recess 5a2 deforms, increasing the deflection of the cup portion 5a. Therefore, even a weak strike to the cup portion 5a results in increased deflection, allowing the strike to be properly transmitted to the cup sensor 6.

[0069] Furthermore, the wall thickness of the cup portion 5a is formed such that the wall thickness of the portion where the thickest protrusion 5a1 is formed is less than twice the wall thickness of the portion where the thinnest recess 5a2 is formed. This suppresses the increase in wall thickness in the cup portion 5a, thereby suppressing elastic deformation of the cup portion 5a in relation to an impact. This allows the tactile sensation (striking feel) of an impact on the cup portion 5a to be as hard as that of an actual cymbal.

[0070] A locking portion 5a3 is formed on the inner circumferential side of the cup portion 5a. The locking portion 5a3 engages the cup portion 5 with the frame portion 4 by hooking onto the inner circumferential side of the frame portion 4a. The locking portion 5a3 is formed at four locations (not shown) on the inner circumferential side of the cup portion 5a. The shape of the locking portion 5a3 is such that when the locking portion 5a3 is hooked onto the inner circumferential side of the frame portion 4a, the locking portion 5a3 contacts the upper surface, bottom surface and side surface of the frame portion 4a.

[0071] As described above, double-sided tape is used to connect the upper surface of frame 4 to the cantilever section 3 (refer to...). Figure 1 The corresponding parts and the cover 5 are attached to the positions corresponding to the canopy 3. At this time, after first configuring the bowl sensor 6 on the frame bowl 4a, the hook and latch part 5a3 is hooked on the inner circumference side of the frame bowl 4a, and the position is adjusted so that the protrusion 5a1 becomes the bowl sensor 6.

[0072] Then, the portions of the frame 4 and the cover 5 corresponding to the chamber portion 3 are sequentially attached from the inner circumference to the outer circumference of the cover 5. Here, the cover 5 is engaged with the inner circumference of the frame bowl portion 4a by the engaging portion 5a3, thus restricting the outward circumferential movement of the cover 5. In this way, the positional relationship between the protrusion 5a1 and the bowl portion sensor 6 can be maintained, and the frame 4 and the cover 5 can be attached.

[0073] Next, refer to Figure 3 (a) and Figure 3 (b) describes the shapes of the bowl sensor 6 and the edge sensor 7. Figure 3 (a) is a side view of the electronic cymbal 1 with the cover 5 omitted. Figure 3 (b) is a top view of the electronic cymbal 1 with the cover 5 omitted. Furthermore, Figure 3 In (a), for the sake of simplifying the accompanying drawings, the edge sensor 7 (refer to) is shown. Figure 3The illustration for (b) is omitted. For example... Figure 3 As shown in (a), the sheet-like bowl sensor 6 is deformed into a cone shape and attached to the frame bowl 4a in such a way that its side surface is consistent with the shape of the cone-shaped frame bowl 4a.

[0074] like Figure 3 As shown in (b), the bowl-shaped sensor 6 is arc-shaped when viewed from above. The bowl-shaped sensor 6 is divided into two parts relative to its diameter: an inner peripheral sensor 6a forming the inner circumference of the bowl-shaped sensor 6, and an outer peripheral sensor 6b forming the outer circumference. The widths of the inner peripheral sensor 6a and the outer peripheral sensor 6b in the diameter direction are approximately the same. Furthermore, "approximately the same" means that variations in manufacturing processes, materials, and measurements are permissible. Specifically, "approximately the same" or "approximately consistent" is defined as a range of ±10%, as will be the case in the following description.

[0075] By separating the bowl sensor 6 into an inner peripheral sensor 6a and an outer peripheral sensor 6b, the width of each in the diametrical direction is reduced. As described above, the bowl sensor 6 is bent and attached according to the shape (conical) of the side of the frame bowl 4a, but the amount of deformation caused by bending of the inner peripheral sensor 6a and the outer peripheral sensor 6b is smaller compared to the case where the bowl sensor 6 is formed into a single sensor. Therefore, the repulsive force (restoring force) for the bent inner peripheral sensor 6a and the outer peripheral sensor 6b to return to their original sheet-like shape is less than the case where the bowl sensor 6 is formed into a single sensor.

[0076] This prevents the inner peripheral sensor 6a and outer peripheral sensor 6b attached to the frame bowl portion 4a from peeling off. Peeling of the inner peripheral sensor 6a and outer peripheral sensor 6b is particularly effective in cases of impact to the bowl portion 2 or in situations involving significant temperature or humidity changes due to environmental testing. Furthermore, by reducing the amount of deformation when the inner peripheral sensor 6a and outer peripheral sensor 6b are bent, peeling of the conductive paste-coated films on the inner peripheral sensor 6a and outer peripheral sensor 6b can also be prevented.

[0077] In addition, such as Figure 3 As shown in (b), the bowl sensor 6 is formed into a partially segmented arc shape (C-shaped) when viewed from above, and is positioned on the frame bowl 4a such that the segmented portion of the bowl sensor 6 becomes the logo L side. This is because when the performer forcefully strikes the hall 3 (see reference 2), the side opposite to the logo L with reference to the bowl 2... Figure 1In the event of this reaction, the electronic cymbal 1 moves up and down significantly, so that sometimes the support pillar (not shown) located in the center of the bowl 2 may come into contact with the side with the logo L in the bowl 2. Therefore, in the frame bowl 4a, the bowl sensor 6 is not formed on the side with the logo L, thereby suppressing impacts to the bowl 2 and false detections even if the support pillar comes into contact with the bowl 2.

[0078] In the bowl-shaped sensor 6, a connecting portion 6c is provided to connect the outer peripheral side of the inner peripheral sensor 6a to the inner peripheral side of the outer peripheral sensor 6b. In this embodiment, the connecting portion 6c is provided at three locations: both ends of the inner peripheral sensor 6a and the outer peripheral sensor 6b in the circumferential direction, and approximately at the middle position in the circumferential direction of the inner peripheral sensor 6a and the outer peripheral sensor 6b.

[0079] By connecting the outer peripheral side of the inner peripheral sensor 6a to the inner peripheral side of the outer peripheral sensor 6b using the connecting part 6c, the positional relationship between the inner peripheral sensor 6a and the outer peripheral sensor 6b is maintained. This not only improves the workability and positional alignment accuracy when setting the bowl sensor 6, but also suppresses the circumferential displacement of the inner peripheral sensor 6a and the outer peripheral sensor 6b in the event of an impact. Furthermore, the connecting part 6c is arranged at approximately equal intervals at three locations along the circumferential direction of the inner peripheral sensor 6a and the outer peripheral sensor 6b. This further suppresses the circumferential displacement of the inner peripheral sensor 6a and the outer peripheral sensor 6b more appropriately.

[0080] like Figure 3 As shown in (b), the edge sensor 7 includes a connecting portion 7a extending from the frame bowl portion 4a toward the outer periphery, and an edge sensor 7b connected to the outer periphery of the connecting portion 7a. The edge sensor 7b is formed into an arc shape (C-shape) that is partially cut off when viewed from above, and this cut-off portion is attached to the outer edge of the frame 4 in an orientation facing the logo L side. In this way, impacts to the outer edge (edge) portion of the electronic cymbal 1 are detected by the edge sensor 7b. Furthermore, the sensor structure of the edge sensor 7b is the same as that of the bowl portion sensor 6. Therefore, when the edge sensor 7b is pushed by an impact or the like, and the upper and lower conductive pastes come into contact, an electrical signal is output from the edge sensor 7b.

[0081] Next, refer to Figure 4 (a) and Figure 4 Section (b) describes the mounting structure of the edge sensor 7 and the method for detecting impact. Figure 4 (a) is to Figure 2 A partially magnified cross-sectional view of electron cymbal 1 in IVa section. Figure 4 (b) indicates self Figure 4A partially enlarged cross-sectional view of the electron cymbal 1 in state (a), when struck by a cymbal rod. Furthermore, Figure 4 (a) and Figure 4 In (b), only a cross-sectional view of the electronic cymbal 1 is shown for the sake of simplicity. Additionally, Figure 4 In (a), the joint areas R1 and R2 of the frame section 4b and the cover section 5b are exaggerated and schematically illustrated. Figure 4 In (b), the illustrations of the joining regions R1 and R2 are omitted.

[0082] The frame section 4b includes: the main body section 4b1, and the frame bowl section 4a (see reference). Figure 2 The outer edge of the frame portion 4b1 slopes gently downwards towards the outer periphery (outer diameter direction); the bent portion 4b2 extends downwards from the outer edge of the main body portion 4b1; and the outer peripheral portion 4b3 protrudes outwards from the lower end of the bent portion 4b2 towards the outer periphery and is formed in a circular plate shape. That is, the main body portion 4b1, the bent portion 4b2, and the outer peripheral portion 4b3 constituting the frame portion 4b are formed continuously in the circumferential direction.

[0083] Body part 4b1 is formed by forming part 3 (see reference) Figure 2 The outer periphery 4b3 is the skeleton part of the main body portion of the body 3, forming the outer edge of the body portion 3. The thickness (plate thickness) of the main body portion 4b1 and the outer periphery portion 4b3 is set to be approximately the same, and these main body portions 4b1 and outer periphery portions 4b3 are connected vertically by a buckling portion 4b2. Therefore, the upper surface of the outer periphery portion 4b3 is located lower than the upper surface of the main body portion 4b1, and the lower surface of the outer periphery portion 4b3 is also located lower than the lower surface of the main body portion 4b1.

[0084] An edge sensor 7b is attached to the upper surface of the outer peripheral portion 4b3 using double-sided tape. With a space S formed that can accommodate the edge sensor 7b, the canopy portion 5b covers the frame canopy portion 4b. Furthermore, in the following description, the state before impact ( Figure 4 In state (a), the space S formed between the upper surface of the outer periphery 4b3 and the lower surface of the canopy 5b will be simply referred to as "space S" for explanation.

[0085] The canopy portion 5b includes: an upper canopy portion 5b1, covering the upper surface of the frame canopy portion 4b; and a lower canopy portion 5b2, connected to the outer edge of the upper canopy portion 5b1 and covering the edge of the frame canopy portion 4b from the outer edge toward the lower surface. Furthermore, in the state before impact, in addition to space S, a space is also formed in the region between the lower canopy portion 5b2 and the outer peripheral surface of the outer peripheral portion 4b3 (associated with space S).

[0086] On the lower surface of the upper cover 5b1, a protruding portion 5b3 is formed that protrudes toward the edge sensor 7b, and a gap is formed between the front end of the protruding portion 5b3 and the edge sensor 7b. Therefore, in the event of an impact on the outer edge of the upper cover 5b1 (see reference...), Figure 4 Under (b), the protrusion 5b3 is pressed against the edge sensor 7b by the elastic deformation (flexion) of the upper cover 5b1 toward the space S, so the impact is detected by the edge sensor 7b.

[0087] In the state before impact, by forming a gap between the front end face of the protrusion 5b3 and the edge sensor 7b, in addition to the canopy portion 5b, for example, the bowl portion 2 (see reference) Figure 2 In the event of an impact, the protrusion 5b3 can be prevented from squeezing into the edge sensor 7b. Therefore, in the event of an impact occurring outside the outer edge of the canopy portion 5b, the edge sensor 7b can be prevented from falsely detecting the impact.

[0088] The configuration is such that, upon impact, the upper cover 5b1 elastically deforms, causing the protrusion 5b3 to be forced into the edge sensor 7b, but a lower cover 5b2 is connected to the outer edge of the upper cover 5b1. Therefore, as the upper cover 5b1 elastically deforms, the lower cover 5b2 also elastically deforms (see reference). Figure 4 As a result of (b) in this embodiment, even when the impact is weak, the lower cover 5b2 is prone to elastic deformation. This configuration will be explained below.

[0089] From the inner edge of the lower cover 5b2 ( Figure 4 (a) At the right end), a joint portion 5b4 is formed that protrudes toward the lower surface of the body portion 4b1 of the frame chamber portion 4b. The joint portion 5b4 is joined by an adhesive from the inner peripheral surface of the bent portion 4b2 of the frame chamber portion 4b to the lower surface of the body portion 4b1. On the other hand, a joint portion 5b4 is joined to the outer peripheral side of the frame chamber portion 4b (hereinafter referred to as "joint area R1"), which is closer to the frame chamber portion 4b than the joint area R1 of the joint portion 5b4 and the frame chamber portion 4b. Figure 4 (a) on the left side), the upper surface of the lower cover portion 5b2 is designed not to engage with the lower surface of the buckled portion 4b2 or the outer peripheral portion 4b3. Moreover, in the area where they are designed not to engage, the lower surfaces of the buckled portion 4b2 and the outer peripheral portion 4b3 are flat surfaces with the upper surface of the lower cover portion 5b2. Therefore, no hook is formed between the lower surface of the frame portion 4b and the upper surface of the lower cover portion 5b2 to prevent deformation of the lower cover portion 5b2 toward the inner peripheral side (inner side in the diametrical direction).

[0090] That is, on the lower surface side of the frame portion 4b, while allowing the lower cover portion 5b2 to deform toward the inner periphery or downward, the inner edge of the lower cover portion 5b2 is joined to the lower surface of the frame portion 4b via the joint portion 5b4. In this way, the elastic deformation of the lower cover portion 5b2 can be restrained by the frame portion 4b, thus allowing the lower cover portion 5b2 to easily deform elastically when the outer edge of the upper cover portion 5b1 is struck.

[0091] Additionally, the mating region R1 is located further inward than the space S (edge ​​sensor 7b). Figure 4 (a) on the right side), thus the area where the lower surface of the frame section 4b does not join the lower cover section 5b2 can be made longer in the diametrical direction. In this way, the range of motion of the lower cover section 5b2 can be expanded, and thus the lower cover section 5b2 can be easily elastically deformed.

[0092] Furthermore, the thickness (wall thickness) of the lower cover portion 5b2 is made smaller than the thickness of the upper cover portion 5b1. More specifically, the thickness L1 of the lower cover portion 5b2 in the region facing the lower surface of the outer periphery 4b3 (and the buckled portion 4b2) of the frame portion 4b (refer to...) Figure 4 (a) is formed to have a thickness L2 smaller than that of the upper cover portion 5b1 in the region facing the upper surface (space S) of the outer periphery portion 4b3. In this way, the lower cover portion 5b2 can be easily elastically deformed when the outer edge of the upper cover portion 5b1 is hit.

[0093] Thus, by easily allowing the lower cover 5b2 to elastically deform, even if the impact on the upper cover 5b1 is weak, the protrusion 5b3 can be reliably squeezed into the edge sensor 7b. Therefore, the accuracy of impact detection can be improved.

[0094] Furthermore, in this embodiment, the thickness L1 of the lower cover portion 5b2 is approximately constant from the inner peripheral side to the outer peripheral side in the region facing the lower surface of the outer peripheral portion 4b3 (and the bent portion 4b2). This configuration allows the lower cover portion 5b2 to be flexibly and elastically deformed as a whole, but it is not limited to this. For example, in the region facing the lower surface of the outer peripheral portion 4b3 or the bent portion 4b2, a portion of the thickness of the lower cover portion 5b2 can be made thinner, or it can be configured to deform by bending its thin-walled portion. This makes the lower cover portion 5b2 easier to elastically deform.

[0095] In this embodiment, a recess (step difference) is formed on the outer edge of the upper surface of the frame portion 4b, thereby forming the space S. Alternatively, as previously done (for example, Japanese Patent Application Publication No. 2009-145559), the space S can be formed by providing a recess (step difference) on the lower surface of the upper cover portion 5b1.

[0096] However, if a recess is provided on the upper cover portion 5b1 side, the thickness of the upper cover portion 5b1 becomes thinner accordingly. Therefore, upon impact, a portion of the upper cover portion 5b1 bends and deforms, raising concerns that the protrusion 5b3 cannot be properly squeezed into the edge sensor 7b. If, in order to eliminate this problem, the thickness of the upper cover portion 5b1 is increased in the region facing the space S, then the thickness of the upper cover portion 5b1 also needs to be increased on the inner periphery side beyond the space S. In other words, in the configuration where a recess is provided on the upper cover portion 5b1 side to form the space S, it is difficult to simultaneously achieve both: reducing the thickness of the cover portion 5b and accurately detecting impacts on the upper cover portion 5b1.

[0097] In contrast, in this embodiment, the frame canopy portion 4b includes: a buckling portion 4b2 that buckles downward from the outer edge of its main body portion 4b1; and an outer peripheral portion 4b3 that protrudes from the lower end side of the buckling portion 4b2 toward the outer peripheral side, and an edge sensor 7b is disposed on its upper surface. Herein, a recess is formed by the step difference between the buckling portion 4b2 and the outer peripheral portion 4b3, and this recess can be used to form a space S. Therefore, compared to the case where a recess is provided on the upper cover portion 5b1 side to form the space S, the overall thickness of the canopy portion 5b can be reduced, and the thickness of the upper cover portion 5b1 in the region facing the space S can be ensured. That is, both the thickness of the canopy portion 5b and the accuracy of detecting impacts on the upper cover portion 5b1 can be achieved. Furthermore, since a step difference is formed in the canopy portion 5b using the buckling portion 4b2 and the outer peripheral portion 4b3, the rigidity of the outer edge portion of the canopy portion 5b can be improved.

[0098] Furthermore, a connecting portion 5b4 protruding towards the lower surface of the main body portion 4b1 is formed on the inner edge side of the lower cover portion 5b2. Therefore, the connecting portion 5b4 can be hooked using the step formed by the buckled portion 4b2 and the outer peripheral portion 4b3. In this way, the displacement of the lower cover portion 5b2 towards the outer peripheral side can be limited by the hooking of the inner peripheral surface of the buckled portion 4b2 with the connecting portion 5b4, thus suppressing the application of force towards the outer peripheral side to the joining area R1. Therefore, peeling of the adhesive in the joining area R1 can be suppressed.

[0099] On the other hand, when the upper cover portion 5b1 is struck, a force is applied towards the inner circumference of the joint area R1. However, in this embodiment, the force is also reduced. That is, the thickness L1 of the lower cover portion 5b2 in the region facing the lower surface of the outer circumference portion 4b3 (and the bent portion 4b2) is formed to be smaller than the thickness L3 of the joint portion 5b4. Therefore, when the upper cover portion 5b1 is struck, only the lower cover portion 5b2 can be easily elastically deformed, thus suppressing the application of a force towards the inner circumference of the joint area R1 during the strike. Therefore, peeling of the adhesive in the joint area R1 can be suppressed.

[0100] Furthermore, the joining region R1 is the connection between the inner circumferential surface of the buckled portion 4b2 and the lower surface of the body portion 4b1, located above the lower end of the inner circumferential surface of the buckled portion 4b2. This prevents the adhesive used to join the joining portion 5b4 to the frame portion 4b from flowing out between the lower surface of the outer circumferential portion 4b3 and the upper surface of the lower cover portion 5b2. Therefore, it prevents the movable range of the lower cover portion 5b2 from becoming narrow. Additionally, a downwardly recessed recess 5b5 is formed on the upper surface of the joining portion 5b4, which is further inner than the joining region R1, thus preventing adhesive from flowing out to the inner circumferential side of the joining portion 5b4. This prevents a decrease in the bonding force between the frame portion 4b and the joining portion 5b4, or improves the appearance of the electronic cymbal 1.

[0101] Here, as described above, in order to accurately detect impacts on the upper cover 5b1, the upper cover 5b1 needs to have a specified thickness in the region facing the space S. This is because the upper cover 5b1 needs to be deformed as a whole upon impact (see reference...). Figure 4 (b)). In other words, if, as in the past (for example, Japanese Patent Application Publication No. 2009-145559), the thickness of the upper cover portion 5b1 in the region facing space S is formed as a thin portion, there is a concern that the thin-walled portion may bend and deform upon impact. Therefore, there is a concern that impacts on the upper cover portion 5b1 cannot be detected with good accuracy.

[0102] In contrast, in this embodiment, in the region facing the upper surface of the outer peripheral portion 4b3 of the frame chamber portion 4b (the recess formed by the step difference between the buckled portion 4b2 and the outer peripheral portion 4b3), the thickness L2 of the upper cover portion 5b1 is set to be approximately constant from the inner peripheral side to the outer peripheral side. This allows the upper cover portion 5b1 to bend as a whole upon impact, making it easily deformable. Therefore, the deformation of the upper cover portion 5b1 allows the protrusion 5b3 to be reliably squeezed into the edge sensor 7b. Thus, impacts on the upper cover portion 5b1 can be detected with high accuracy.

[0103] Furthermore, the upper cover portion 5b1 engages with the upper surface of the frame portion 4b (body portion 4b1) further inward than the outer edge of the upper surface of the bent portion 4b2. That is, the upper cover portion 5b1 is designed not to engage with the upper surface of the frame portion 4b (both body portion 4b1 and bent portion 4b2) further outward than the engagement area R2 between the upper cover portion 5b1 and the upper surface of the frame portion 4b. Therefore, upon impact, the upper cover portion 5b1 (the portion not engaged with the upper surface of the frame portion 4b) extends outward and is easily deformed.

[0104] Furthermore, the thickness L2 of the upper cover portion 5b1 is set to be approximately constant from the area that does not engage with the upper surface of the frame portion 4b to the area facing the upper surface of the outer peripheral portion 4b3. Therefore, for example, compared to the case where the thickness of the upper cover portion 5b1 is a single unit, the upper cover portion 5b1 extends outwards and is more easily deformable. Thus, by allowing the upper cover portion 5b1 to easily deform elastically towards the outer periphery, even if the impact on the upper cover portion 5b1 is weak, the protrusion 5b3 can be reliably squeezed into the edge sensor 7b. Therefore, the detection accuracy for weak impacts can be improved.

[0105] Furthermore, in the region facing the upper surface of the outer peripheral portion 4b3, the thickness L2 of the upper cover portion 5b1 is set to be approximately constant, and the upper surface of the outer peripheral portion 4b3 and the lower surface of the upper cover portion 5b1 (the region where the protrusion 5b3 is not formed) are set to be parallel. In this way, the thickness from the upper surface of the outer peripheral portion 4b3 to the upper surface of the upper cover portion 5b1 can be minimized as much as possible, and the upper cover portion 5b1 can be easily deformed by bending as a whole upon impact.

[0106] Next, regarding the case 8 located on frame 4 and its mounting structure, refer to... Figure 5 (a) and Figure 5 (b) Figure 6 Let me explain. Figure 5 (a) is a bottom view of the electronic cymbal 1. Figure 5 Figure (b) is a bottom view of the electronic cymbal 1 with the box 8 removed. As shown in Figure 5(a), the box 8 is located on the bottom surface of the frame 4.

[0107] like Figure 5 As shown in (b), a frame-side mounting portion 4c for embedding into the box 8 is formed on the bottom surface of the frame 4, further outward than the frame bowl portion 4a. In this embodiment, the frame-side mounting portion 4c is formed in six circumferential locations relative to the outer side of the frame bowl portion 4a. (Refer to...) Figure 6 The structure of the frame-side mounting part 4c and the embedding structure of the box 8 into the frame-side mounting part 4c are described.

[0108] Figure 6 yes Figure 1 A cross-sectional view of the electron cymbal 1 along the VI-VI section line. (See attached image.) Figure 6 As shown, the frame-side mounting portion 4c includes a support portion 4c1 and a protruding receiving portion 4c2. The support portion 4c1 is provided on the bottom surface of the frame 4 and is formed in an L-shape in cross-sectional view. The open portion of the L-shape in the support portion 4c1 is formed facing the outer periphery of the frame 4.

[0109] The protruding receiving portion 4c2 is provided adjacent to the outer peripheral side of the support portion 4c1 and is a hole formed through the frame 4. The outer peripheral end of the protruding receiving portion 4c2 in the frame 4 is formed further outward than the outer peripheral end of the support portion 4c1 in the frame 4.

[0110] On the outer wall 8a, which forms the outer periphery of the box 8, a hook portion 8b is formed to engage with the frame-side mounting portion 4c. The hook portion 8b is located on the upper part of the inner periphery of the outer wall 8a and is arrow-shaped in cross-section. Specifically, on the inner periphery of the hook portion 8b (… Figure 6 The front end portion 8b1, which tapers at the front end, is formed on the right side of the paper, and is located further outward than the front end portion 8b1 on the outer periphery side. Figure 6 On the left side of the paper, a protrusion 8b2 is formed that protrudes upward (towards the frame 4 side). In addition, the length of the bottom surface of the hook portion 8b and the upper surface of the protrusion 8b2 is greater than the length of the upper surface of the support portion 4c1 of the frame-side mounting portion 4c and the bottom surface of the frame 4.

[0111] The fitting of these frame-side mounting portions 4c and hook portions 8b will be explained. First, the hook portion 8b is inserted between the support portion 4c1 and the protruding receiving portion 4c2 of the frame-side mounting portion 4c. At this time, since the front end 8b1 of the hook portion 8b is tapered at the front end, the hook portion 8b can be smoothly inserted between the support portion 4c1 and the protruding receiving portion 4c2. Here, the length of the bottom surface and the upwardly protruding portion of the hook portion 8b is greater than the length of the bottom surface of the support portion 4c1 and the frame 4. However, when the hook portion 8b is inserted between the support portion 4c1 and the protruding receiving portion 4c2, the synthetic rubber protrusion 8b2 elastically deforms between the upper surface of the support portion 4c1 and the bottom surface of the frame 4, thereby allowing the hook portion 8b to be inserted between the support portion 4c1 and the protruding receiving portion 4c2.

[0112] Furthermore, if the front end portion 8b1 is inserted until it contacts the support portion 4c1, the protrusion 8b2 is inserted into the protruding receiving portion 4c2. Here, the hook portion 8b is inserted into the frame-side mounting portion 4c. By inserting the hook portion 8b into the frame-side mounting portion 4c as described above, the movement of the box 8 in the inward circumferential direction can be restricted using the front end portion 8b1 that contacts the support portion 4c1. Additionally, the downward movement of the box 8 can be restricted using the bottom surface of the hook portion 8b that contacts the upper surface of the support portion 4c1. This prevents the hook portion 8b from detaching from the frame-side mounting portion 4c, thus preventing the outer wall 8a of the box from detaching from the frame 4.

[0113] Next, the embedding structure of the frame bowl 4a on the inner circumference side of box 8 will be described. For example... Figure 6As shown, an inner enclosure portion 8d is formed on the upper part of the inner wall 8c, which forms the inner periphery of the box 8, to enclose the inner periphery of the frame bowl portion 4a. The inner enclosure portion 8d is formed such that, when hooked onto the inner periphery of the frame bowl portion 4a, it contacts the upper surface, bottom surface, and side surface of the inner periphery of the frame bowl portion 4a. Furthermore, the inner enclosure portion 8d is formed in four locations on the upper part of the inner wall 8c.

[0114] The inner circumference of the frame bowl 4a is wrapped around the inner enclosure 8d, and the inner wall 8c of the box is embedded in the frame bowl 4a. Since the side surface of the inner circumference of the frame bowl 4a contacts the inner enclosure 8d, the movement of the box 8 in the outward circumferential direction is restricted. Furthermore, since the upper and lower surfaces of the inner circumference of the frame bowl 4a also contact the inner enclosure 8d, the movement of the box 8 in the up and down directions is restricted. Therefore, since the inner enclosure 8d is prevented from detaching from the inner circumference of the frame 4, the detachment of the inner wall 8c from the frame 4 is also prevented.

[0115] Furthermore, on the inner circumference of the frame 4, four inner lining portions 8d for embedding the inner circumference of the box 8 and four engaging portions 5a3 for engaging the cover 5 are respectively provided. In order to prevent the inner lining portions 8d and engaging portions 5a3 from interfering with each other on the inner circumference of the frame 4, the inner lining portions 8d and engaging portions 5a3 are formed alternately in the circumferential direction on the inner circumference of the frame 4.

[0116] As described above, the box 8 is mounted on the frame 4 by inserting the hook portion 8b into the outer periphery of the box 8 on the frame-side mounting portion 4c and the inner cladding portion 8d into the inner periphery of the frame 4. There is no need to form screw holes in the frame 4 to tighten the box 8 to the frame 4. Therefore, stress concentration at specific locations on the frame 4 due to tightening can be suppressed, thus enabling a uniform distribution of impact sensitivity on the frame 4.

[0117] Furthermore, the box 8 is embedded in the frame 4 at both the inner and outer circumferential sides. At this time, the movement of the box 8 in the inward circumferential direction is restricted by the frame-side mounting part 4c and the hook part 8b, and the movement of the box 8 in the outward circumferential direction is restricted by the inner enclosure part 8d. In this way, movement of the box 8 in both the inward and outward circumferential directions can be suppressed, thus ensuring that the box 8 is securely and firmly mounted to the frame 4.

[0118] In addition to the frame-side mounting part 4c, hook part 8b, and inner enclosure part 8d, the box 8 and frame 4 are further provided with structures to restrict the movement of the box 8 in the circumferential and vertical directions. Specifically, a convex support column 8e is provided from the bottom surface of the box 8 upwards. The support column 8e is located further inwards than the outer wall 8a of the box. Figure 6(On the right side of the paper), when the box 8 is installed on the frame 4, it is formed on the inner periphery side of the support part 4c1 of the frame 4. In addition, the vertical length of the support column 8e is set such that when the box 8 is installed on the frame 4, a gap is formed between the upper surface of the support column 8e and the bottom surface of the frame 4.

[0119] On the other hand, a protruding limiting part 4d is provided on the bottom surface of the frame 4, that is, on the inner circumference side of the support column 8e when the box 8 is installed on the frame 4. In addition, the support column 8e of the box 8 is formed around the entire circumference of the box 8, and the limiting part 4d is also formed around the entire circumference of the frame 4.

[0120] When the housing 8 moves inward in the circumferential direction, the movement is restricted by the contact between the support column 8e and the limiting part 4d. On the other hand, when the housing 8 moves significantly outward in the circumferential direction, the movement is restricted by the contact between the support column 8e and the support part 4c1. Therefore, since the positional displacement of the frame 4 and the housing 8 in the diametrical direction can be suppressed, the fitting between the frame and the housing 8 can be properly maintained.

[0121] Furthermore, when the housing 8 is mounted on the frame 4, a gap is formed between the upper surface of the support column 8e and the bottom surface of the frame 4. This reduces the number of contact points (i.e., constraint points) between the frame 4 and the housing 8, thus preventing vibrations of the frame 4 caused by impacts from returning to the housing 8 and suppressing vibration attenuation. On the other hand, when an external force is applied from the bottom side of the housing 8, the gap between the support column 8e and the frame 4 disappears, and the upper surface of the support column 8e contacts the bottom surface of the frame 4, allowing the support column 8e to support the bottom side of the housing 8. This suppresses deformation of the housing 8.

[0122] Furthermore, the support portion 4c1 is the part that engages with the hook portion 8b and is also the part that contacts the outer periphery of the support column 8e. Therefore, by forming a single support portion 4c1, it is not necessary to separately form the part that engages with the hook portion 8b and the part that contacts the outer periphery of the limiting portion 4d. This reduces the manufacturing cost of the frame 4 and allows for a simpler shape of the bottom surface of the frame 4, thereby improving the vibration propagation performance of the frame 4 caused by impacts.

[0123] Next, regarding the shape of box 8, refer to... Figure 7 (a) and Figure 7 Let’s explain using (b). Figure 7 (a) is a top view of box 8. Figure 7 (b) is a cross-sectional view of box 8 along section line VIIb-VIIb. For example... Figure 7 (a) and Figure 7As shown in (b), in the box 8, in addition to the outer wall 8a, hook part 8b, inner wall 8c, inner packaging part 8d and support column 8e, a support column mounting part 8f, bottom wall 8g and protective part 8h are also provided.

[0124] The support mounting section 8f is located at the center of the bottom surface of the housing 8 when viewed from above. It is formed between the inner walls 8c and the inner walls 8c of the housing and is where the support column (not shown) that supports the electronic cymbal 1 is mounted. The bottom wall 8g is a wall-shaped part that forms the bottom surface of the housing 8. The protective section 8h is formed on the bottom wall 8g and is a division used to protect the electronic components (not shown) installed on the bottom surface of the frame 4.

[0125] A thick-walled portion 8g1, with a wall thickness equal to that of the bottom wall 8g, is formed on the opposite side of the protective portion 8h, based on the support mounting portion 8f. Since electronic components are mounted on the frame 4, the weight balance of the frame 4 is biased towards the electronic components due to their weight. Therefore, when a support is mounted on the support mounting portion 8f, the electronic cymbal 1 tilts towards the side where the electronic components are located.

[0126] Therefore, by forming a thick-walled portion 8g1 on the bottom wall 8g of the housing 8h, which is positioned opposite to the support mounting portion 8f, the weight of the thick-walled portion 8g1 in the housing 8 is increased. As a result, the weight imbalance caused by the electronic components mounted on the frame 4 is corrected due to the weight of the thick-walled portion 8g1, thus preventing the electronic cymbal 1 from tilting when the support is mounted on the support mounting portion 8f. Furthermore, by providing the thick-walled portion 8g1, the tilting of the electronic cymbal 1 can be prevented without installing additional "weights" on the housing 8 or the like.

[0127] The above description is based on the described embodiments, but it is easy to deduce that various improvements and modifications can be made.

[0128] In the described embodiment, the bowl sensor 6 is separated into two parts: an inner peripheral sensor 6a and an outer peripheral sensor 6b. However, it is not limited to separating the bowl sensor 6 into two parts; it can also be separated into more than two parts depending on the size of the bowl 2. For example, it can also be as follows: Figure 8 (a) Bowl sensor 60 and Figure 8 Like the bowl sensor 61 in (b), in addition to the inner peripheral sensor 6a and the outer peripheral sensor 6b, an outermost peripheral sensor 6d is also provided, thus separating it into three.

[0129] In this case, it is possible to... Figure 8 Like the bowl sensor 60 in (a), the connecting part 6c can be positioned in the same phase between the inner peripheral sensor 6a and the outer peripheral sensor 6b, and between the outer peripheral sensor 6b and the outermost peripheral sensor 6d. Figure 8Similar to the bowl-shaped sensor 61 in (b), a connecting portion 6c may be provided at any position between the inner peripheral sensor 6a and the outer peripheral sensor 6b, and between the outer peripheral sensor 6b and the outermost peripheral sensor 6d. Alternatively, as with the bowl-shaped sensor 61, four or more connecting portions 6c may be provided between the inner peripheral sensor 6a and the outer peripheral sensor 6b, and between the outer peripheral sensor 6b and the outermost peripheral sensor 6d.

[0130] In the described embodiment, the bowl-shaped sensor 6 is formed into a partially segmented arc shape (C-shaped) when viewed from above. However, it is not limited to this and the bowl-shaped sensor 6 may also be formed into a continuous circumferential shape when viewed from above.

[0131] In this embodiment, the side surface of the frame bowl portion 4a is formed into a conical shape, while its diametrical cross-section is formed into a straight line. However, the diametrical cross-sectional shape of the frame bowl portion 4a is not limited to a straight line, and any shape can be used. For example, it can be as follows: Figure 8 Like the frame bowl portion 40a of (c), a recess 40a1 is formed between adjacent bowl portion sensors 6, or as... Figure 8 Like the frame bowl portion 41a in (d), the frame bowl portion 41a is formed in a hemispherical shape. In either case, in order for the bowl sensor 6 provided on the frame bowl portion 40a and the frame bowl portion 41a to be directly opposite the protrusion 5a1 of the cover 5, it is ideal that at least in the frame bowl portion 40a and the frame bowl portion 41a, the cross-sectional shape in the diametrical direction of the position where the bowl sensor 6 is provided is formed as a straight line.

[0132] In the described embodiment, a recess 5a2 is provided in the cup portion 5a at a position further inward than the protrusion 5a1 on the inner circumference side. However, this is not necessarily the case; alternatively, for example... Figure 8 Similar to the cup portion 50a in (c), in addition to the recess 5a2, a U-shaped recess 50a2 is provided in the cup portion 5a further outward than the protrusion 5a1 on the outer periphery. Alternatively, the recess 5a2 may be omitted, and only the recess 50a2 may be provided, or both the recess 5a2 and the recess 50a2 may be omitted together. Furthermore, the shape of the recess 5a2 and the recess 50a2 is not limited to being U-shaped in cross-sectional view; they may also be rectangular or V-shaped.

[0133] In the described embodiment, when the engaging portion 5a3 is hooked onto the inner circumferential side of the frame bowl portion 4a, the engaging portion 5a3 is formed to contact the upper surface, bottom surface, and side surface of the frame bowl portion 4a. However, it is not limited to this; for example, it may be as follows: Figure 9 Like the engaging portion 51a3 of the cup portion 51a in (a), the portion that contacts the bottom surface of the frame cup portion 4a is omitted, and the engaging portion 51a3 is formed to contact the upper surface and side surface of the frame cup portion 4a.

[0134] In the described embodiment, when the inner portion 8d is hooked onto the inner periphery of the frame bowl portion 4a, the inner portion 8d is formed to contact the upper surface, bottom surface, and side surface of the frame bowl portion 4a. However, it is not limited to this; for example, it may be as follows: Figure 9 Like the inner packaging portion 80d of box 80 in (b), the portion that contacts the bottom surface of frame bowl portion 4a is omitted, and the inner packaging portion 80d is formed to engage with the upper surface and side surface of frame bowl portion 4a.

[0135] In the described embodiment, the support portion 4c1 of the frame 4 is formed in an L-shape, with its open portion facing the outer periphery of the frame 4, and the front end portion 8b1 of the hook portion 8b of the box 8 is formed facing the inner periphery of the box 8. However, it is not necessarily limited to this; for example, it may be as follows: Figure 9 Like the support portion 42c1 of the frame 42 in (c), the open portion of the support portion 42c1 is formed facing the inner periphery of the frame 4, and the front end portion 81b1 of the hook portion 81b in the box 81 is formed facing the outer periphery of the box 8.

[0136] In the described embodiment, the hook portion 8b is disposed on the upper part of the inner circumferential side of the outer wall 8a of the box. However, the position of the hook portion 8b is not limited to this; for example, it can be disposed as follows: Figure 9 Like box 82 (d), the hook portion 82b is provided on the upper surface of the outer wall 8a of the box. In this case, the hook portion 82b can also be formed as follows: Figure 9 As shown in (d), the upward-protruding shape of the protrusion storage portion 43c2 of the frame 43 is countersunk, and the hook portion 82b is inserted into the protrusion storage portion 43c2. In this way, the downward load of the frame 43 can be supported by the engagement of the hook portion 82b and the protrusion storage portion 43c2, so the support portion 4c1 can be omitted from the frame 43.

[0137] Furthermore, if the support portion 4c1 is omitted from the frame 43, a support column 82e can be provided on the outer periphery of the limiting portion 4d in the box 82. In this way, by omitting the support portion 4c1, the unrestricted movement of the box 8 in the outward circumferential direction can be restricted on the outer periphery of the box 82 by the limiting portion 4d and the support column 82e. Alternatively, the support column 82e can be provided on the box 8 in the described embodiment. Figure 9 (b) Box 80 and Figure 9 Box 81 of (c).

[0138] In the described embodiment, an electronic cymbal is shown as an example of an electronic percussion instrument. However, it is not limited to this, and the technical concept of the described embodiment can also be applied to electronic percussion instruments that simulate other instruments such as cajons or woodblocks (for example, by setting the thickness of the cover facing the sensor to be approximately constant). Therefore, in the described embodiment, a circular plate-shaped frame is described as an example of the body component that forms the skeleton of the electronic percussion instrument, but it is not limited to this. For example, the shape of the body component when viewed from above can be rectangular, polygonal, or a combination of curves and straight lines. In addition, it is also possible to make the thickness dimension (vertical dimension) of the body component thicker than the cover 5 (for example, by forming the body component into a box shape).

[0139] In the described embodiment, reinforced plastic is used to form the frame 4. However, this is not a limitation; other resin-based raw materials or metal can be used to form the frame 4. Furthermore, although synthetic rubber is used to form the cover 5 and the box 8 in the described embodiment, this is not a limitation; other resin-based raw materials such as silicon can also be used.

[0140] In the described embodiment, the bowl sensor 6 or the edge sensor 7 is attached to the frame bowl portion 4a or the frame cannula portion 4b using double-sided adhesive tape. Additionally, the cover 5 is attached to the upper surface of the frame 4 using double-sided adhesive tape, and the cover 5 (joint portion 5b4) is attached to the lower surface of the frame 4 using adhesive. However, this is not a limitation; the bowl sensor 6 or the edge sensor 7 can also be attached to the frame bowl portion 4a or the frame cannula portion 4b using adhesive. Furthermore, the cover 5 can be attached to the upper surface of the frame 4 using adhesive, or it can be attached to the lower surface of the frame 4 using double-sided adhesive tape (joint portion 5b4). That is, the method for joining the sensors or covers 5 to the frame 4 is not limited to adhesive; any known joining method (e.g., fusing the cover 5 to the frame 4) can be used as long as the frame 4 can be fixed.

[0141] In the described embodiment, the following situation is explained: the lower cover portion 5b2 does not engage with the lower surface of the bent portion 4b2 or the outer peripheral portion 4b3 of the frame portion 4b, and in the area where they do not engage, the lower surfaces of the bent portion 4b2 and the outer peripheral portion 4b3, as well as the upper surface of the lower cover portion 5b2, are respectively provided as flat surfaces. However, this is not necessarily the case. If the degree of deformation of the lower cover portion 5b2 toward the inner peripheral side is not hindered, the lower surface of the frame portion 4b or the upper surface of the lower cover portion 5b2 may be formed with uneven surfaces. As an example of such a configuration, for example, a configuration in which a pit is formed only on the lower surface of the frame portion 4b (the upper surface of the lower cover portion 5b2), or a configuration in which a small uneven surface is formed on the lower surface of the frame portion 4b and the upper surface of the lower cover portion 5b2 to the extent that they will not hook into each other is shown.

[0142] In the described embodiment, a buckled portion 4b2 and an outer peripheral portion 4b3 are formed on the outer edge of the body portion 4b1 of the frame chamber portion 4b. However, this is not a limitation; the buckled portion 4b2 or the outer peripheral portion 4b3 may be omitted, and the frame chamber portion 4b may be configured as a frame without a step. In this case, a space S is formed by providing a recess on the outer edge side of the lower surface of the upper cover portion 5b1, and the edge sensor 7b is housed in the space S. The joining portion 5b4 of the inner edge portion of the lower cover portion 5b2 is omitted; it is sufficient to join the lower cover portion 5b2 to the lower surface of the frame chamber portion 4b.

[0143] In the described embodiment, the case where the joining region R1 is located on the inner periphery side of the space S has been explained. However, it is not limited to this, and the joining region R1 may also be located on the outer periphery side of the space S. That is, if the lower cover portion 5b2 is configured not to be joined on the outer edge side of the lower surface of the frame chamber portion 4b, then the lower cover portion 5b2 may also be joined on the lower surface of the bent portion 4b2 or the outer peripheral portion 4b3 of the frame chamber portion 4b.

[0144] In the described embodiment, a joining portion 5b4 is provided from the inner peripheral surface of the buckled portion 4b2 of the frame portion 4b to the lower surface of the body portion 4b1. However, it is not limited to this; it may also be configured such that the joining portion 5b4 is joined only to the inner peripheral surface of the buckled portion 4b2, or that the joining portion 5b4 is joined only to the lower surface of the body portion 4b1.

[0145] In the described embodiment, the thickness L1 of the lower cover portion 5b2 is smaller than the thickness L2 of the upper cover portion 5b1. However, this is not a limitation; the thickness L1 of the lower cover portion 5b2 and the thickness L2 of the upper cover portion 5b1 may be the same, or the thickness L1 of the lower cover portion 5b2 may be larger than the thickness L2 of the upper cover portion 5b1.

[0146] In the described embodiment, the thickness L2 of the upper cover portion 5b1 is set to be approximately constant in the region facing the upper surface of the outer peripheral portion 4b3 of the frame chamber portion 4b. However, it is not necessarily limited to this, and the thickness of the upper cover portion 5b1 can be partially thinned. In this case, it is preferable to partially thin the thickness of the upper cover portion 5b1 on the inner peripheral side of the space S (edge ​​sensor 7b). For example, if the thickness of the upper cover portion 5b1 is partially thinned in a region that is not connected to the upper surface of the frame chamber portion 4b, the thin-walled portion will extend and be easily elastically deformed.

[0147] In the described embodiment, the upper cover portion 5b1 is joined to the upper surface of the frame chamber portion 4b (body portion 4b1) on the inner periphery side, which is closer to the outer edge (space S) of the upper surface of the buckling portion 4b2. However, it is not limited to this, and the upper cover portion 5b1 may also be integrally joined to the upper surface of the frame chamber portion 4b.

[0148] In the described embodiment, the upper surface of the outer peripheral portion 4b3 and the lower surface of the upper cover portion 5b1 (the area where the protrusion 5b3 is not formed) are parallel. However, this is not a limitation; it is also possible to configure the upper surface of the outer peripheral portion 4b3 and the lower surface of the upper cover portion 5b1 to be non-parallel in the area facing the upper surface of the outer peripheral portion 4b3 (edge ​​sensor 7b). In this case, it is preferable that the facing distance between the upper surface of the outer peripheral portion 4b3 and the lower surface of the upper cover portion 5b1 increases towards the outer periphery in this area. Therefore, upon impact, the lower surface of the upper cover portion 5b1 and the upper surface of the outer peripheral portion 4b3 are nearly parallel, and the upper cover portion 5b1 elastically deforms. Thus, the edge sensor 7b can be pushed against each other by the front end face of the protrusion 5b3 and the parallel surface of the upper surface of the outer peripheral portion 4b3. This allows the impact on the upper cover portion 5b1 to be appropriately transmitted to the edge sensor 7b.

[0149] In the described embodiment, the case where the joining portion 5b4 is hooked onto the step formed by the buckling portion 4b2 and the outer peripheral portion 4b3 is explained. However, it is not limited to this; a recess may also be formed on the lower surface of the frame portion 4b, and the joining portion 5b4 may be embedded in this recess. This can restrict the displacement of the joining portion 5b4 toward both the outer peripheral side and the inner peripheral side. That is, if the engagement position (jointing portion 5b4) is further toward the inner peripheral side than the lower surface of the frame portion 4b and the inner edge side of the lower cover portion 5b2, then recesses or protrusions that can be interlocked may be formed on the lower surface of the frame 4 and the upper surface of the cover 5.

[0150] In the described embodiment, the case where an adhesive is prevented from flowing out to a more inner circumferential side than the joint 5b4 is explained by forming a recess 5b5 on the upper surface of the joint 5b4. However, it is not limited to this, and the adhesive may also be prevented from flowing out by providing a recess 5b5 (or other than the recess 5b5) on the lower surface of the frame chamber 4b.

[0151] The values ​​listed in the embodiments are just examples; other values ​​may be used.

Claims

1. An electronic cymbal, characterized in that, include: A circular, plate-shaped frame; The frame bowl is formed at the center of the frame when viewed from above; A bowl sensor is attached to the frame bowl along the circumferential direction to detect impacts to the frame bowl. The bowl sensor has a first part and a second part. as well as A cover, encompassing the frame and the bowl-shaped sensor, the surface of which is formed as an impact surface, and The first part has a first C shape, and the second part has a second C shape. The first and second portions of the bowl-shaped sensor are separated by a gap, which is arc-shaped, at least in the diametrical direction of the bowl-shaped frame. The first portion includes a first segment forming an opening in the first C-shape, and the second portion includes a second segment forming an opening in the second C-shape. The first and second divisions are configured to suppress false detection of impacts on the frame bowl.

2. The electronic cymbal according to claim 1, characterized in that, At least the portion of the frame bowl where the bowl sensor is located is formed in a conical shape.

3. The electronic cymbal according to claim 1 or 2, characterized in that, A cover bowl is formed in the cover at a position corresponding to the frame bowl, and A protruding compression portion is formed on the back of the cup portion and at a position opposite to the cup portion sensor.

4. The electronic cymbal according to claim 3, characterized in that, The surface of the cup portion is formed into an upwardly convex hemispherical shape, and The opposing surface in the extrusion section that faces the bowl sensor is formed to match the shape of the frame bowl at the position where the bowl sensor is located.

5. The electronic cymbal according to claim 3, characterized in that: A gap is formed between the squeezing part of the cover and the bowl-shaped sensor.

6. The electronic cymbal according to claim 5, characterized in that, The upper limit of the gap is set to 0.8 mm.

7. The electronic cymbal according to claim 3, characterized in that, An engaging portion is formed on the inner circumferential side of the cup portion, which engages the cup portion to engage the cup with the frame by hooking onto the inner circumferential side of the frame.

8. The electronic cymbal according to claim 1, characterized in that, The first part is an inner peripheral sensor forming the inner circumferential side of the bowl-shaped sensor, and the second part is an outer peripheral sensor forming the outer circumferential side of the bowl-shaped sensor. The inner peripheral sensor and the outer peripheral sensor are separated relative to the diameter direction of the bowl sensor.

9. A method for setting a bowl-shaped sensor, characterized in that, The bowl sensor is disposed in the frame bowl of the electronic cymbal, and the electronic cymbal includes: A circular, plate-shaped frame; The frame bowl portion is formed at the center of the frame in plan view; and A bowl-shaped sensor is attached to the bowl of the frame along the circumferential direction and detects impacts to the bowl. The method for setting the bowl-shaped sensor, wherein... The bowl sensor is separated into a first part and a second part by a gap at least diametrically along the bowl of the frame, the gap being arc-shaped. The first part has a first C-shape, the second part has a second C-shape, and the first part includes a first segment forming an opening of the first C-shape, and the second part includes a second segment forming an opening of the second C-shape. The first and second divisions are configured to suppress false detection of impacts on the frame bowl.

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