Electronic cymbal and housing mounting method

Abstract

Provided is an electronic cymbal and a shell mounting method in which the distribution of the striking sensitivity to a strike on a frame is uniform even when the frame is mounted with a shell. An electronic cymbal (1) mounts a shell (8) to a frame (4) by fitting a hooking portion (8b) on the outer periphery side of the shell (8) to a supporting portion (4b) on the outer periphery side of the frame (4), and fitting an inner wrapping portion (8d) on the inner periphery side of the shell (8) to the inner periphery side of the frame (4). The shell (8) and the frame (4) can be mounted without forming screw holes in the frame (4) and screwing the shell (8) to the frame (4). Therefore, stress concentration at a specific position of the frame (4) due to screwing can be suppressed, and the distribution of the striking sensitivity on the frame (4) can be made uniform.

Description

Technical Field

[0001] This invention relates to an electronic cymbal and a method for mounting its housing. Background Technology

[0002] Patent Document 1 discloses an electronic cymbal with a second frame disposed on the lower surface side of a first frame forming the striking surface. An output port for transmitting a striking output signal to a sound source device is accommodated between the first and second frames. The first and second frames are fixed together by screws.

[0003] However, when the first frame is fixed with screws, stress concentrates around the screw holes in the first frame. Due to this stress, vibration propagation within the first frame becomes uneven, and the distribution of impact sensitivity relative to impact on the first frame becomes skewed.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2002-207481 (e.g., paragraphs 0023-0028, 0054, ... Figure 3 , Figure 4 wait) Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] The present invention was made to solve the aforementioned problems, and its purpose is to provide an electronic cymbal and a housing mounting method in which the distribution of impact sensitivity relative to impact on the frame is uniform even when the housing is mounted on a frame.

[0009] Technical means to solve the problem

[0010] To achieve the aforementioned objective, the electronic cymbal of the present invention includes: a circular plate-shaped frame; and a housing mounted on the lower surface of the frame and protecting electronic components, wherein the frame is provided with a frame-side mounting portion and the housing is provided with a housing-side mounting portion, and the housing is mounted on the frame by fitting the frame-side mounting portion and the housing-side mounting portion together.

[0011] The effects of the invention

[0012] The housing mounting method of the present invention is a method of mounting the housing to the frame of an electronic cymbal, which includes a circular plate-shaped frame and a housing for protecting electronic components, and the housing is mounted to the frame by fitting a frame-side mounting portion provided on the frame with a housing-side mounting portion provided on the housing. Attached Figure Description

[0013] Figure 1 This is a top view of an electronic cymbal as one embodiment.

[0014] Figure 2 yes Figure 1 A cross-sectional view of the electron cymbal along section II-II.

[0015] Figure 3 (a) is a side view of the electron cymbal without its cover. Figure 3 (b) is a top view of the electronic cymbals without the cover.

[0016] Figure 4 (a) is to Figure 2 A magnified cross-sectional view of the electron cymbal in section IVa. Figure 4 (b) indicates from Figure 4 A partially enlarged cross-sectional view of the electron cymbal after it has been struck with a cymbal stick in state (a).

[0017] Figure 5 (a) is a bottom view of the electron cymbal. Figure 5 (b) is a bottom view of the electronic cymbal when the casing is removed.

[0018] Figure 6 yes Figure 1 A cross-sectional view of an electron cymbal along the VI-VI section line.

[0019] Figure 7 (a) is a top view of the shell. Figure 7 (b) is Figure 7 A cross-sectional view of the shell along section lines VIIb-VIIb in (a).

[0020] Figure 8 (a) is a top view of the bell-shaped sensor in the modified example. Figure 8 (b) is a top view of the bell-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.

[0021] Figure 9 (a) shows a cross-sectional view of the electronic cymbal in the locking part of 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.

[0022] Figure 10 (a) represents a top view of the casing of an electronic cymbal in another variation. Figure 10 (b) means Figure 10 (a) is a cross-sectional view of the shell along the Vb-Vb section line. Figure 10 (c) means Figure 10 A cross-sectional view of the hook and support column of (a) for the electronic cymbal.

[0023] [Explanation of reference numerals in the attached figures]

[0024] 1: Electronic cymbals (electronic percussion instruments)

[0025] 3: Bow-shaped part

[0026] 4, 42: Frame

[0027] 4a, 40a, 41a: Bell-shaped part of the frame

[0028] 4b1: Ontology Department

[0029] 4b2: Bend

[0030] 4b3: Peripheral part

[0031] 4c: Frame-side mounting section

[0032] 4c1, 42c1: Support section (part of the frame-side mounting section)

[0033] 4c2, 42c2: Protruding storage section (part of the frame-side mounting section)

[0034] 5: Cover

[0035] 5a, 50a, 51a: Bell-shaped part of the cover

[0036] 5a3, 51a3: Connecting part

[0037] 5b1: Upper cover body

[0038] 5b2: Lower cover body

[0039] 5b3: Protrusion

[0040] 5b4: Joint

[0041] 6: Bell-shaped sensor

[0042] 6c: Connecting part

[0043] 7b: Edge sensor (sensor)

[0044] 8, 10, 80, 81, 82: Shell

[0045] 8a, 82a: Outer wall of the shell

[0046] 8b, 10b, 82b: Hook and hook part (part of the housing-side mounting part)

[0047] 8c: Inner wall of the casing

[0048] 8d: Inner enclosure (part of the housing-side mounting section)

[0049] 8e, 82e: Support columns

[0050] 8f: Support column installation section

[0051] 8g: Bottom wall of the shell

[0052] 8g1: Thick-walled portion

[0053] 8h: Protection Department

[0054] L1: Thickness dimension of the lower cover body

[0055] L2: Thickness dimension of the upper cover body

[0056] L3: Thickness dimension of the joint

[0057] S: Space Detailed Implementation

[0058] 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 bell-shaped part 2 that is circular when viewed from above and located at its center, and a bow-shaped part 3 located on the outside of the bell-shaped part 2. A logo L, such as the manufacturer's name or product name, is formed on the bow-shaped part 3. The player plays the instrument by striking the area near the logo L, which is based on the bell-shaped part 2, on the upper surface of the bow-shaped part 3.

[0059] If the performer strikes the bell-shaped part 2 using cymbals or the like, the striking of the bell-shaped part 2 is achieved through... Figure 2 The bell-shaped sensor 6, described later, is used for detection. If the bow-shaped part 3 is struck, the impact on the upper surface of the bow-shaped part 3 is detected by an impact sensor (not shown). Furthermore, if the outer edge (edge) of the bow-shaped part 3 is struck, the impact is detected by... Figure 4 The edge sensor 7, described later, performs the detection. That is, the percussion detection device in the electronic percussion instrument is constituted by the aforementioned sensors (the mounting structure of the sensors described later). The percussion detected by the bell-shaped 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 bell-shaped part 2 and the bow-shaped part 3.

[0060] Reference Figures 2-7The structure of the electronic cymbal 1 will be explained. First, the mounting structure of the bell-shaped 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 the skeleton, a cover 5, a bell-shaped sensor 6 and an edge sensor 7 disposed on the upper surface of the frame 4, and a synthetic rubber housing 8 disposed on the bottom surface of the frame 4 and protecting the electronic components of the electronic cymbal 1.

[0061] A frame bell-shaped portion 4a is formed in the frame 4 at a position corresponding to the bell-shaped portion 2, and a frame bow-shaped portion 4b is formed in the frame 4 at a position corresponding to the bow-shaped portion 3. The frame bow-shaped portion 4b is a portion of the frame 4 that is located further outward than the frame bell-shaped portion 4a, and is connected by a limiting portion 4d described later (see reference). Figure 2 The enlarged portion of the frame is connected to the outer edge of the bell-shaped portion 4a. The bell-shaped portion 4a is formed as a cone shape that tapers from the side upwards to the front end, and a bell-shaped sensor 6 for detecting the impact of the bell-shaped portion 2 is attached to the side of the bell-shaped portion 4a using double-sided tape.

[0062] The bell-shaped sensor 6 is formed by bonding an article made of polyethylene terephthalate (PET) film coated with conductive paste, with the conductive paste facing each other, into a sheet shape. When the bell-shaped sensor 6 is pushed by an impact or other means, and the conductive pastes come into contact, an electrical signal is output from the bell-shaped sensor 6.

[0063] Because the side of the bell-shaped portion 4a is conical, the shape of the side surface in the cross-section of the bell-shaped portion 4a is straight. By attaching a plate-shaped bell-shaped sensor 6 to this bell-shaped portion 4a, the bell-shaped sensor 6 can be made to be in close radial contact with the bell-shaped portion 4a.

[0064] The cover 5 is a synthetic rubber component that covers the upper part of the frame 4 and forms the striking surface of the electronic cymbal 1. The cover 5 is attached to the frame 4 using double-sided tape. Specifically, the cover 5 is attached to the upper surface of the frame 4 and the arc-shaped portion 3 (see reference) using double-sided tape. Figure 1 The corresponding part, and the cover 5 and the bow-shaped part 3 (see reference) Figure 1 Attach it to the corresponding position.

[0065] In the housing 5, at a position corresponding to the bell-shaped portion 2, a bell-shaped portion 5a is formed covering the frame bell-shaped portion 4a and the bell-shaped portion sensor 6. Similarly, in the housing 5, at a position corresponding to the bow-shaped portion 3, a bow-shaped portion 5b is formed covering the frame bow-shaped portion 4b and the edge sensor 7. The bell-shaped 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. Thus, the surface of the bell-shaped portion 5a, i.e., the surface of the bell-shaped portion 2, is formed to match the shape of the bell-shaped portion in the actual cymbal.

[0066] A protruding protrusion 5a1 is formed on the back side of the bell-shaped portion 5a of the housing, specifically on the side facing the bell-shaped portion 4a of the frame and the bell-shaped sensor 6, and at the position facing the bell-shaped sensor 6. The face of the protrusion 5a1 facing the bell-shaped sensor 6 (the facing surface) is formed in a conical shape, consistent with the shape of the bell-shaped portion 4a at the location where the bell-shaped sensor 6 is located. Furthermore, the protrusion 5a1 is formed such that its facing surface is parallel to the bell-shaped sensor 6. Additionally, the protrusion 5a1 is formed with a gap between its facing surface and the upper surface of the bell-shaped sensor 6, the size of which is set to be 0.3 mm to 0.8 mm.

[0067] When the bell-shaped portion 5a of the housing is struck, it bends, and the gap between the protrusion 5a1 and the bell-shaped sensor 6 disappears. As a result, the bell-shaped sensor 6 is pressed against the protrusion 5a1, and the impact is transmitted to it. At this time, the opposing surfaces of the protrusion 5a1 are formed in a manner consistent with the shape of the frame bell-shaped portion 4a where the bell-shaped sensor 6 is located, and furthermore, they are formed so that the opposing surfaces of the protrusion 5a1 are parallel to the bell-shaped sensor 6. Therefore, the bell-shaped sensor 6 is pushed against each other by the parallel surfaces of the protrusion 5a1 and the frame bell-shaped portion 4a. As a result, the conductive paste on the upper and lower surfaces of the bell-shaped sensor 6 is pushed parallel from top to bottom, thus appropriately transmitting the impact on the bell-shaped portion 5a of the housing to the bell-shaped sensor 6.

[0068] By forming a gap between the opposing surfaces of the protrusion 5a1 and the bell-shaped sensor 6, contact between the protrusion 5a1 and the bell-shaped sensor 6 can be prevented when an impact occurs to a part other than the bell-shaped part 5a of the housing, such as the bow-shaped part 3. Thus, false detection by the bell-shaped sensor 6 can be suppressed when an impact occurs to a part other than the bell-shaped part 5a of the housing.

[0069] Furthermore, the gap between the opposing surface of the protrusion 5a1 and the bell-shaped sensor 6 is set to 0.3mm to 0.8mm. As a result, even if the impact on the bell-shaped part 5a of the cover is a weak impact (i.e., the impact intensity is weak), the protrusion 5a1 can be pressed into the bell-shaped sensor 6, thereby improving the impact sensitivity relative to a weak impact.

[0070] In the bell-shaped portion 5a of the housing, a U-shaped recess 5a2 is formed further inward than the protrusion 5a1 on the inner periphery. When the bell-shaped portion 5a is struck, the recess 5a2 deforms, increasing the deflection of the bell-shaped portion 5a. Therefore, even a weak strike to the bell-shaped portion 5a results in increased deflection, allowing the strike to be properly transmitted to the bell-shaped sensor 6.

[0071] Furthermore, the wall thickness of the bell-shaped 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 within the bell-shaped portion 5a, thus suppressing elastic deformation of the bell-shaped portion 5a in relation to an impact. Consequently, the tactile sensation (impact feel) of an impact on the bell-shaped portion 5a can be made as hard as that of an actual cymbal.

[0072] A locking portion 5a3 is formed on the inner circumferential side of the bell-shaped portion 5a of the cover. The locking portion 5a3 locks the cover 5 to the frame 4 by hooking onto the inner circumferential side of the bell-shaped portion 4a of the frame. The locking portion 5a3 is formed at four locations (not shown) on the inner circumferential side of the bell-shaped portion 5a of the cover. The shape of the locking portion 5a3 is such that when the locking portion 5a3 is hooked onto the inner circumferential side of the bell-shaped portion 4a of the frame, the locking portion 5a3 is in contact with the upper surface, bottom surface and side surface of the bell-shaped portion 4a of the frame.

[0073] As described above, double-sided tape is used to connect the upper surface of frame 4 to the arched portion 3 (see reference). Figure 1 The corresponding part and the position of the cover 5 corresponding to the bow-shaped part 3 are attached. At this time, firstly, the bell-shaped part sensor 6 is arranged on the bell-shaped part 4a of the frame, and then the hook and latch part 5a3 is hooked on the inner circumference side of the bell-shaped part 4a of the frame, and the position is adjusted so that the protrusion 5a1 is above the bell-shaped part sensor 6.

[0074] Subsequently, the portions of the frame 4 and the cover 5 corresponding to the arc-shaped portion 3 are sequentially attached from the inner periphery to the outer periphery of the cover 5. Here, the cover 5 is engaged with the inner periphery of the bell-shaped portion 4a of the frame using the engaging portion 5a3, thus restricting the movement of the cover 5 in the outer periphery direction. As a result, the positional relationship between the protrusion 5a1 and the bell-shaped sensor 6 can be maintained, and the frame 4 and the cover 5 can be attached.

[0075] Next, refer to Figure 3 The shapes of the bell-shaped sensor 6 and the edge sensor 7 are described. Figure 3 (a) is a side view of the electronic cymbal 1 without the cover 5. Figure 3 (b) is a top view of the electronic cymbal 1 without the cover 5. Furthermore, Figure 3 In (a), for the sake of simplifying the drawing, the edge sensor 7 (refer to) is shown. Figure 3 The attached diagram for (b) is omitted. Figure 3 As shown in (a), the sheet-like bell-shaped sensor 6 is deformed into a cone shape and attached to the frame bell-shaped part 4a in such a way that its side surface is consistent with the shape of the conical frame bell-shaped part 4a.

[0076] like Figure 3 As shown in (b), the bell-shaped sensor 6 has an arc shape when viewed from above. The bell-shaped sensor 6 is separated into two parts radially: an inner peripheral sensor 6a forming the inner periphery of the bell-shaped sensor 6, and an outer peripheral sensor 6b forming the outer periphery. The radial widths of the inner peripheral sensor 6a and the outer peripheral sensor 6b 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 constant" is defined as a range of ±10%, as will be the case in the following description.

[0077] By separating the bell-shaped sensor 6 into an inner peripheral sensor 6a and an outer peripheral sensor 6b, the radial width of each is reduced. As described above, the bell-shaped sensor 6 is bent and attached in accordance with the shape (conical) of the side surface of the bell-shaped portion 4a of the frame, but the amount of deformation caused by bending of the inner peripheral sensor 6a and the outer peripheral sensor 6b is reduced compared to the case where the bell-shaped 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 bell-shaped sensor 6 is formed into a single sensor.

[0078] Therefore, peeling of the inner peripheral sensor 6a and the outer peripheral sensor 6b attached to the bell-shaped portion 4a of the frame can be suppressed. In particular, peeling of the inner peripheral sensor 6a and the outer peripheral sensor 6b can be suppressed in the event of an impact on the bell-shaped portion 2 or in the event of significant changes in temperature or humidity due to environmental testing. In addition, by reducing the amount of deformation when the inner peripheral sensor 6a and the outer peripheral sensor 6b are bent, peeling of the films coated with conductive paste on the inner peripheral sensor 6a and the outer peripheral sensor 6b can also be suppressed.

[0079] In addition, such as Figure 3 As shown in (b), the bell-shaped sensor 6 is formed into an arc shape (C-shaped) that is partially interrupted when viewed from above, and is installed on the bell-shaped part 4a of the frame such that the interrupted part of the bell-shaped sensor 6 becomes the logo L side. This is because when the performer forcefully strikes the arc-shaped part 3 (see reference 2) on the opposite side of the logo L, which is based on the bell-shaped part 2... Figure 1In the event of a reaction, the electronic cymbal 1 moves up and down significantly, sometimes causing the support pillar (not shown) located in the center of the bell-shaped part 2 to come into contact with the side with the logo L on the bell-shaped part 2. Therefore, in the frame bell-shaped part 4a, the bell-shaped part sensor 6 is not formed on the side with the logo L, thereby suppressing false detections of an impact on the bell-shaped part 2 even if the support pillar comes into contact with the bell-shaped part 2.

[0080] In the bell-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 the middle position of the inner peripheral sensor 6a and the outer peripheral sensor 6b in the circumferential direction.

[0081] 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 can be maintained. This improves the workability and positional alignment accuracy when setting the bell-shaped sensor 6, and also suppresses the circumferential displacement of the inner peripheral sensor 6a and the outer peripheral sensor 6b when struck. Furthermore, the connecting part 6c is arranged at approximately equal intervals in 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 effectively.

[0082] like Figure 3 As shown in (b), the edge sensor 7 includes a connecting portion 7a extending from the bell-shaped 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 in an arc shape (C-shape) that is partially interrupted when viewed from above, and the interrupted portion is attached to the outer edge of the frame 4 in an orientation toward the logo L. Thus, impacts to the outer edge (edge) 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 bell-shaped sensor 6. Therefore, when the edge sensor 7b is pushed up and down by an impact or other contact with the conductive paste, an electrical signal is output from the edge sensor 7b.

[0083] Next, refer to Figure 4 The mounting structure of the edge sensor 7 and the method for detecting impacts are explained. Figure 4 (a) is to Figure 2 A partially magnified cross-sectional view of electron cymbal 1 in IVa section. Figure 4 (b) indicates from Figure 4 A partially enlarged cross-sectional view of the electron cymbal 1 after being struck with a cymbal rod in state (a). Furthermore, Figure 4In order to simplify the accompanying drawings, only a cross-sectional view of the electronic cymbal 1 is shown. Additionally, Figure 4 In (a), the joint areas R1 and R2 of the frame arched part 4b and the cover arched part 5b are schematically exaggerated. Figure 4 In (b), the illustrations of the joining regions R1 and R2 are omitted.

[0084] The frame bow-shaped portion 4b includes: a body portion 4b1, and a bell-shaped portion 4a (see reference). Figure 2 The outer edge of the frame bow-shaped portion 4b gradually slopes downward towards the outer periphery (radially outward); the curved portion 4b2 bends downward from the outer edge of the main body portion 4b1; and the outer peripheral portion 4b3 protrudes outward from the lower end of the curved portion 4b2 towards the outer periphery, and the frame bow-shaped portion 4b is formed in a circular plate shape. That is, the main body portion 4b1, the curved portion 4b2, and the outer peripheral portion 4b3 constituting the frame bow-shaped portion 4b are formed continuously in the circumferential direction.

[0085] The main body 4b1 forms the bow-shaped part 3 (see reference). Figure 2 The outer peripheral portion 4b3 is the skeleton part of the main body portion 3, forming the outer edge of the bow-shaped portion 3. The thickness (plate thickness) of the main body portion 4b1 and the outer peripheral portion 4b3 is set to be approximately the same, and they are connected vertically by a bending portion 4b2. Therefore, the upper surface of the outer peripheral portion 4b3 is located lower than the upper surface of the main body portion 4b1, and similarly, the lower surface of the outer peripheral portion 4b3 is located lower than the lower surface of the main body portion 4b1.

[0086] 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 arched portion 5b of the cover covers the arched portion 4b of the frame. Furthermore, in the following description, the state before impact ( Figure 4 The space S formed between the upper surface of the outer periphery 4b3 and the lower surface of the arched part 5b of the cover in state (a) is simply referred to as "space S" for explanation.

[0087] The arched portion 5b of the cover includes: an upper cover portion 5b1, which covers the upper surface of the arched portion 4b of the frame; and a lower cover portion 5b2, which is connected to the outer edge of the upper cover portion 5b1 and covers the edge of the arched portion 4b of the frame towards 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 cover portion 5b2 and the outer peripheral surface of the outer peripheral portion 4b3 (connected to space S).

[0088] On the lower surface of the upper cover portion 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 that the outer edge of the upper cover portion 5b1 is struck (see reference...), Figure 4 (b) Through the elastic deformation (flexion) of the upper cover portion 5b1 toward the space S, the protrusion 5b3 is pressed against the edge sensor 7b, so the impact is detected by the edge sensor 7b.

[0089] In the state before impact, by forming a gap between the front end face of the protrusion 5b3 and the edge sensor 7b, outside the arched portion 5b of the cover, for example the bell-shaped portion 2 (see reference) Figure 2 In the event of an impact, the protrusion 5b3 can be prevented from being pressed into the edge sensor 7b. Thus, in the event of an impact occurring outside the outer edge of the arched portion 5b of the cover, the edge sensor 7b can be prevented from falsely detecting the impact.

[0090] Thus, the configuration is such that, through the elastic deformation of the upper cover portion 5b1 upon impact, the protrusion 5b3 is pressed into the edge sensor 7b, and the lower cover portion 5b2 is connected to the outer edge of the upper cover portion 5b1. Therefore, as the upper cover portion 5b1 elastically deforms, the lower cover portion 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 portion 5b2 becomes a structure that is prone to elastic deformation. The structure will be described below.

[0091] From the inner edge of the lower cover part 5b2 ( Figure 4 At the right end of (a), a joining portion 5b4 is formed protruding toward the lower surface of the body portion 4b1 of the frame bow portion 4b. The joining portion 5b4 is joined from the inner circumferential surface of the curved portion 4b2 of the frame bow portion 4b to the lower surface of the body portion 4b1 by an adhesive. On the other hand, a further outer circumferential side (where the joining portion 5b4 is joined to the frame bow portion 4b in the joining area R1 (hereinafter simply referred to as "joining area R1")) Figure 4 (a) on the left side), the upper surface of the lower cover portion 5b2 does not engage with the lower surface of the curved portion 4b2 or the outer peripheral portion 4b3. Moreover, in the area where they do not engage, the lower surfaces of the curved 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 arched 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 (radial inward side).

[0092] That is, on the lower surface side of the frame arched 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 arched portion 4b via the joining portion 5b4. This suppresses the elastic deformation of the lower cover portion 5b2, which is constrained by the frame arched 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.

[0093] Additionally, the mating region R1 is located further inward than the space S (edge ​​sensor 7b). Figure 4 (a) on the right side), so the area where the lower surface of the frame bow-shaped part 4b does not engage with the lower cover part 5b2 can be formed to be longer in the radial direction. As a result, the range of motion of the lower cover part 5b2 can be expanded, so that the lower cover part 5b2 can be easily elastically deformed.

[0094] 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 curved portion 4b2) of the frame bow portion 4b (refer to...) Figure 4 The thickness L2 of the upper cover portion 5b1 in the region facing the upper surface (space S) of the outer periphery 4b3 is smaller than that of the lower cover portion 5b2. As a result, the lower cover portion 5b2 can be easily elastically deformed when the outer edge of the upper cover portion 5b1 is hit.

[0095] Thus, by making the lower cover portion 5b2 easily deformable elastically, even if the impact on the upper cover portion 5b1 is weak, the protrusion 5b3 can be reliably pressed into the edge sensor 7b. Therefore, the accuracy of impact detection can be improved.

[0096] 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 curved portion 4b2). Using this structure, the lower cover portion 5b2 can be flexed and elastically deformed as a whole, but this is not a limitation. For example, it could be a structure in which a portion of the thickness of the lower cover portion 5b2 is made thin in the region facing the lower surface of the outer peripheral portion 4b3 or the curved portion 4b2, and deformed by bending the thin-walled portion. This makes the lower cover portion 5b2 more easily elastically deformable.

[0097] In this embodiment, a recess (step difference) is formed on the outer edge of the upper surface of the frame bow-shaped portion 4b, and the space S is formed by the recess. However, the space S can also be formed by providing a recess (step difference) on the lower surface of the upper cover portion 5b1, as in the past (for example, Japanese Patent Application Publication No. 2009-145559).

[0098] 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 may bend and deform, potentially preventing the protrusion 5b3 from being properly pressed into the edge sensor 7b. If the thickness of the upper cover portion 5b1 is increased in the region facing the space S to eliminate the aforementioned problem, 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 structure where a recess is provided on the upper cover portion 5b1 side to form the space S, it is difficult to simultaneously achieve both a thinner thickness of the arcuate portion 5b of the cover and accurate detection of impacts on the upper cover portion 5b1.

[0099] In contrast, in this embodiment, the frame bow-shaped portion 4b includes: a curved portion 4b2 that bends downward from the outer edge of the body portion 4b1 of the frame bow-shaped portion 4b; and an outer peripheral portion 4b3 that protrudes from the lower end side of the curved portion 4b2 toward the outer peripheral side and has an edge sensor 7b disposed on its upper surface. Thus, a recess is formed by the step difference between the curved 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 cover bow-shaped portion 5b can be reduced, while ensuring the thickness of the upper cover portion 5b1 in the region facing the space S. That is, the following can be achieved: reducing the thickness of the cover bow-shaped portion 5b and accurately detecting impacts on the upper cover portion 5b1. Furthermore, since a step difference is formed in the arc-shaped portion 5b of the cover body by utilizing the curved portion 4b2 and the outer peripheral portion 4b3, the rigidity of the outer edge portion of the arc-shaped portion 5b of the cover body can be improved.

[0100] Furthermore, a joint portion 5b4 protruding toward the lower surface of the main body portion 4b1 is formed on the inner edge side of the lower cover portion 5b2. Therefore, the joint portion 5b4 can be engaged using the step difference formed by the curved portion 4b2 and the outer peripheral portion 4b3. Thus, the engagement between the inner peripheral surface of the curved portion 4b2 and the joint portion 5b4 restricts the displacement of the lower cover portion 5b2 toward the outer peripheral side, thereby suppressing the application of force toward the outer peripheral side to the joint area R1. Therefore, peeling off the joint area R1 can be suppressed.

[0101] On the other hand, when the upper cover portion 5b1 is struck, a force towards the inner circumference is applied to the joint area R1. However, in this embodiment, the structure is designed to reduce this force. That is, the thickness L1 of the lower cover portion 5b2 in the region facing the lower surface of the outer peripheral portion 4b3 (and the curved portion 4b2) is made smaller than the thickness L3 of the joint portion 5b4. As a result, 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 to the joint area R1 during the strike. Therefore, subsequent peeling in the joint area R1 can be suppressed.

[0102] Furthermore, the joining region R1 is the connection between the inner circumferential surface of the curved portion 4b2 and the lower surface of the body portion 4b1, and is located higher than the lower end of the inner circumferential surface of the curved portion 4b2. This prevents the adhesive used to join the joining portion 5b4 to the frame arched 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 range of motion of the lower cover portion 5b2 from becoming narrower. 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 arched portion 4b and the joining portion 5b4, or improves the appearance of the electronic cymbal 1.

[0103] Here, as described above, in order to accurately detect impacts on the upper cover portion 5b1, the upper cover portion 5b1 needs to have a specified thickness in the region facing the space S. This is because the upper cover portion 5b1 needs to be deformed as a whole upon impact (see reference...). Figure 4 (b)). In other words, if the structure is thin, as in the past (e.g., Japanese Patent Application Publication No. 2009-145559), a portion of the thickness of the upper cover portion 5b1 in the region facing space S is formed, then there is a risk that the thin-walled portion may bend and deform upon impact. Therefore, there is a risk that impacts on the upper cover portion 5b1 cannot be detected accurately.

[0104] In contrast, in this embodiment, in the region facing the upper surface of the outer peripheral portion 4b3 of the frame bow-shaped portion 4b (the recess formed by the step difference between the curved portion 4b2 and the outer peripheral portion 4b3), the thickness L2 of the upper cover portion 5b1 is approximately constant from the inner peripheral side to the outer peripheral side. Therefore, the upper cover portion 5b1 can be easily deformed by bending as a whole upon impact, and the protrusion 5b3 can be reliably pressed into the edge sensor 7b through the deformation of the upper cover portion 5b1. Thus, impacts to the upper cover portion 5b1 can be detected with high accuracy.

[0105] Furthermore, the upper cover portion 5b1 engages with the upper surface of the frame arched portion 4b (body portion 4b1) at a point further inward than the outer edge of the upper surface of the curved portion 4b2. That is, the upper cover portion 5b1 does not engage with the upper surface of the frame arched portion 4b (both body portion 4b1 and curved portion 4b2) at a point further outward than the engagement area R2 between the upper cover portion 5b1 and the upper surface of the frame arched portion 4b. Consequently, upon impact, the upper cover portion 5b1 (the portion not engaged with the upper surface of the frame arched portion 4b) extends outward and is easily deformed.

[0106] Furthermore, the thickness L2 of the upper cover portion 5b1 is approximately constant from the area not engaging with the upper surface of the frame bow portion 4b to the area facing the upper surface of the outer peripheral portion 4b3. Therefore, for example, compared to a case where a portion of the thickness of the upper cover portion 5b1 is formed to be thicker, the upper cover portion 5b1 is more easily deformed in a manner extending towards the outer periphery. Thus, by easily elastically deforming the upper cover portion 5b1 towards the outer periphery, even if the impact on the upper cover portion 5b1 is weak, the protrusion 5b3 can be reliably pressed into the edge sensor 7b. Therefore, the detection accuracy for weak impacts can be improved.

[0107] 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. As a result, 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.

[0108] Next, regarding the housing 8 located on the frame 4 and the mounting structure of the housing 8, refer to... Figure 5 , Figure 6 Let me explain. Figure 5 (a) is a bottom view of electron cymbal 1. Figure 5 (b) is a bottom view of the electronic cymbal 1 with the casing 8 removed. Figure 5 As shown in (a), the housing 8 is disposed on the bottom surface of the frame 4.

[0109] like Figure 5 As shown in (b), a frame-side mounting portion 4c for embedding into the housing 8 is formed on the bottom surface of the frame 4, further outward than the frame bell-shaped 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 bell-shaped portion 4a. (Refer to...) Figure 6 The structure of the frame-side mounting part 4c and the embedding structure of the housing 8 relative to the frame-side mounting part 4c will be described.

[0110] 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 a part 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.

[0111] The protruding receiving portion 4c2 is a hole formed adjacent to the outer peripheral side of the support portion 4c1 and passing 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.

[0112] On the outer wall 8a of the outer periphery of the housing 8, a hook portion 8b is formed for fitting the frame-side mounting portion 4c. The hook portion 8b is located on the upper part of the inner periphery side of the outer wall 8a and is arrow-shaped in cross-section. Specifically, on the inner periphery side 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.

[0113] The engagement of the frame-side mounting portion 4c and the hook portion 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 larger 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.

[0114] Furthermore, if the front end portion 8b1 is inserted until it contacts the support portion 4c1, the protrusion 8b2 is embedded into the protrusion receiving portion 4c2. Thus, the hook portion 8b is embedded into the frame-side mounting portion 4c. With the hook portion 8b embedded in the frame-side mounting portion 4c, the movement of the housing 8 in the inward circumferential direction can be restricted using the front end portion 8b1, which contacts the support portion 4c1. Additionally, the bottom surface of the hook portion 8b, which contacts the upper surface of the support portion 4c1, can restrict the downward movement of the housing 8. Therefore, the hook portion 8b can be prevented from detaching from the frame-side mounting portion 4c, thereby preventing the outer wall 8a of the housing from detaching from the frame 4.

[0115] Next, the embedding structure of the bell-shaped portion 4a of the frame on the inner circumferential side of the housing 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 housing 8, and encloses the inner periphery of the frame bell-shaped portion 4a. The inner enclosure portion 8d is formed such that, when hooked onto the inner periphery of the frame bell-shaped portion 4a, the inner enclosure portion 8d is in contact with the upper surface, bottom surface, and side surface of the inner periphery of the frame bell-shaped portion 4a. In addition, the inner enclosure portion 8d is formed in four locations on the upper part of the inner wall 8c of the housing.

[0116] By enclosing the inner periphery of the bell-shaped portion 4a with the inner portion 8d, the inner wall 8c of the shell is embedded into the bell-shaped portion 4a. Since the side surface of the inner periphery of the bell-shaped portion 4a is in contact with the inner portion 8d, the movement of the shell 8 in the outward peripheral direction is restricted. In addition, since the upper and lower surfaces of the inner periphery of the bell-shaped portion 4a are also in contact with the inner portion 8d, the movement of the shell 8 in the up and down directions is restricted. Thus, since the inner portion 8d can be prevented from detaching from the inner periphery of the frame 4, the detachment of the inner wall 8c of the shell from the frame 4 can be prevented.

[0117] Furthermore, on the inner circumference of the frame 4, four inner cladding portions 8d for embedding the inner circumference of the housing 8 and four engaging portions 5a3 for engaging the cover 5 are respectively provided. In order to prevent the inner cladding portions 8d and engaging portions 5a3 from interfering with each other on the inner circumference of the frame 4, the inner cladding portions 8d and engaging portions 5a3 are respectively formed in an alternating manner in the circumferential direction on the inner circumference of the frame 4.

[0118] As described above, the housing 8 is mounted to the frame 4 by inserting the hook portion 8b into the outer peripheral side of the housing 8 into the mounting portion 4c on the frame side, and by inserting the inner cladding portion 8d into the inner peripheral side of the frame 4. There is no need to form screw holes in the frame 4 to screw the housing 8 to the frame 4. Therefore, stress concentration at specific locations on the frame 4 due to screwing can be suppressed, thus allowing for a more uniform distribution of impact sensitivity on the frame 4.

[0119] Furthermore, the housing 8 is embedded into the frame 4 at both the inner and outer circumferential sides. At this time, the frame-side mounting portion 4c and the hook portion 8b restrict the movement of the housing 8 in the inward circumferential direction, and the inner enclosure portion 8d restricts the movement of the housing 8 in the outward circumferential direction. Thus, movement of the housing 8 in both the inward and outward circumferential directions can be suppressed, thereby ensuring that the housing 8 is securely and firmly mounted to the frame 4.

[0120] In addition to the frame-side mounting portion 4c, hook portion 8b, and inner enclosure portion 8d, the housing 8 and frame 4 also include structures that restrict the movement of the housing 8 in the circumferential and vertical directions. Specifically, a convex support column 8e is provided from the bottom surface of the housing 8 upwards. The support column 8e is located further inwards than the outer wall 8a of the housing. Figure 6(on the right side of the paper), and when the housing 8 is mounted 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 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.

[0121] On the other hand, a protruding limiting part 4d is provided on the bottom surface of the frame 4, and on the inner circumference side of the support column 8e when the housing 8 is installed on the frame 4. In addition, the support column 8e of the housing 8 is formed around the entire circumference of the housing 8, and the limiting part 4d is also formed around the entire circumference of the frame 4.

[0122] When the housing 8 moves inward in the circumferential direction, the movement is restricted by the connection 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 connection between the support column 8e and the support part 4c1. Therefore, since the radial displacement of the frame 4 and the housing 8 can be suppressed, the fit between the frame 4 and the housing 8 can be appropriately maintained.

[0123] 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 redirecting the vibration of the frame 4 based on impacts to the housing 8 and suppressing vibration attenuation. On the other hand, when an external force is applied from the bottom surface 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 comes into contact with the bottom surface of the frame 4, allowing the support column 8e to support the bottom surface of the housing 8. This suppresses deformation of the housing 8.

[0124] Furthermore, the support portion 4c1 is the part that fits into the hook portion 8b and is also the part that connects to 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 fits into the hook portion 8b and the part that connects to the outer periphery of the limiting portion 4d, thus reducing the manufacturing cost of the frame 4 and allowing the bottom surface of the frame 4 to be formed into a simpler shape, thereby improving the vibration propagation performance to the frame 4 based on impact.

[0125] Next, regarding the shape of housing 8, refer to... Figure 7 Let me explain. Figure 7 (a) is a top view of housing 8. Figure 7 (b) is Figure 7 A cross-sectional view of shell 8 along section lines VIIb-VIIb in (a). Figure 7As shown, in the housing 8, in addition to the outer wall 8a, hook part 8b, inner wall 8c, inner enclosure part 8d and support column 8e, a support column mounting part 8f, bottom wall 8g and protective part 8h are also provided.

[0126] The support mounting section 8f is located at the center of the bottom surface of the housing 8 when viewed from above, between two inner walls 8c, and houses a support (not shown) that supports the electronic cymbal 1. The bottom wall 8g is a wall-shaped portion forming the bottom surface of the housing 8. The protective section 8h is a partition formed on the bottom wall 8g to protect the electronic components (not shown) disposed on the bottom surface of the frame 4.

[0127] A thick-walled portion 8g1, with a wall thickness equal to that of the bottom wall 8g of the housing and on the opposite side of the protective portion 8h based on the support mounting portion 8f, is formed. 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 mounted.

[0128] Therefore, by forming a thick-walled portion 8g1 on the bottom wall 8g of the housing 8 at a position opposite to the protective portion 8h, based on the support mounting portion 8f, the weight of the thick-walled portion 8g1 of the housing 8 is increased. As a result, the weight imbalance caused by the electronic components mounted on the frame 4 is corrected by the weight of the thick-walled portion 8g1, thus suppressing the tilting of the electronic cymbal 1 when a 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 suppressed without installing additional "weights" on the housing 8 or the like.

[0129] The above description is based on the described embodiments, but it is easy to deduce that various improvements and modifications can be made.

[0130] In the described embodiment, the bell-shaped 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 bell-shaped sensor 6 into two parts; it may be separated into two or more parts depending on the size of the bell-shaped portion 2. For example, it may be as follows: Figure 8 (a) The bell-shaped sensor 60 and Figure 8 Like the bell-shaped sensor 61 in (b), in addition to the inner peripheral sensor 6a and the outer peripheral sensor 6b, the outermost peripheral sensor 6d is also provided, thus separating it into three parts.

[0131] In this case, it is possible to... Figure 8The connecting part 6c is positioned in the same phase as the bell-shaped sensor 60 in (a), 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 8 As with the bell-shaped sensor 61 of (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 bell-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.

[0132] In the described embodiment, the bell-shaped sensor 6 is formed as an arc shape (C-shaped) that is partially interrupted when viewed from above. However, it is not limited to this and the bell-shaped sensor 6 may also be formed as continuous in the circumferential direction when viewed from above.

[0133] In this embodiment, the side surface of the bell-shaped portion 4a of the frame is formed into a conical shape, while its radial cross-section is formed into a straight line. However, the radial cross-sectional shape of the bell-shaped portion 4a is not limited to a straight line, and any shape can be used. For example, it can be as follows: Figure 8 As in (c), a recess 40a1 is formed between adjacent bell-shaped sensors 6, or as in (c). Figure 8 Like the bell-shaped portion 41a of (d), the bell-shaped portion 41a is formed in a hemispherical shape. In either case, it is ideal that at least in the bell-shaped portions 40a and 41a, the radial cross-sectional shape of the position where the bell-shaped sensor 6 is provided is formed as a straight line, so that the bell-shaped sensor 6 provided on the bell-shaped portions 40a and 41a can be directly opposite the protrusion 5a1 of the cover 5.

[0134] In the described embodiment, a recess 5a2 is provided in the bell-shaped portion 5a of the cover, at a position further inward than the protrusion 5a1 on the inner circumference side. However, this is not necessarily the case; for example, it may be provided as follows: Figure 8 Similar to the bell-shaped portion 50a of (c), in addition to the recess 5a2, a U-shaped recess 50a2 is provided in the bell-shaped 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-section; they may also be rectangular or V-shaped.

[0135] In the described embodiment, when the engaging portion 5a3 is hooked onto the inner periphery of the bell-shaped portion 4a of the frame, the engaging portion 5a3 is formed to be in contact with the upper surface, bottom surface, and side surface of the bell-shaped portion 4a of the frame. However, it is not necessarily limited to this; for example, it may be as follows: Figure 9 Like the engaging part 51a3 of the bell-shaped part 51a of the cover (a), the part that connects to the bottom surface of the bell-shaped part 4a of the frame is omitted, and the engaging part 51a3 is formed to connect to the upper surface and the side surface of the bell-shaped part 4a of the frame.

[0136] In the described embodiment, when the inner cladding portion 8d is hooked onto the inner periphery of the bell-shaped portion 4a of the frame, the inner cladding portion 8d is formed to be in contact with the upper surface, bottom surface, and side surface of the bell-shaped portion 4a of the frame. However, it is not necessarily limited to this; for example, it may be as follows: Figure 9 Like the inner enclosure portion 80d of the shell 80 in (b), the portion that connects to the bottom surface of the frame bell-shaped portion 4a is omitted, and the inner enclosure portion 80d is formed to engage with the upper surface and side surface of the frame bell-shaped portion 4a.

[0137] 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 housing 8 is formed facing the inner periphery of the housing 8. However, this is not necessarily the case; 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 housing 81 is formed facing the outer periphery of the housing 8.

[0138] 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 housing. However, the position of the hook portion 8b is not limited to this; for example, it can be disposed as follows: Figure 9 As with housing 82 (d), the hook portion 82b is provided on the upper surface of the outer wall 82a of the housing. In this case, the hook portion 82b may also be formed as follows: Figure 9 As shown in (d), the upward-protruding shape of the protrusion receiving portion 43c2 of the frame 43 is designed as a countersunk hole, and the hook portion 82b is inserted into the protrusion receiving portion 43c2. Thus, by engaging the hook portion 82b with the protrusion receiving portion 43c2, the downward load of the frame 43 can be supported, and therefore the support portion 4c1 can be omitted from the frame 43.

[0139] 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 housing 82. Thus, by omitting the support portion 4c1, the movement of the housing 82, which is not restricted on the outer periphery, can be limited in the outward peripheral direction by the limiting portion 4d and the support column 82e. Alternatively, the support column 82e can also be provided on the housing 8 in the aforementioned embodiment. Figure 9 (b) the shell 80 and Figure 9 The shell of (c) 81.

[0140] In the described embodiment, the hook portion 8b is disposed on the outer wall 8a and the outer wall 82a of the housing. However, it is not necessarily limited to this; for example, it can be disposed on the outer wall 8a and the outer wall 82a of the housing. Figure 10 As with the housing 10, the hook portion 10b can be positioned further outward than the inner wall 8c of the housing. Figure 10 (a) and Figure 10 As shown in (b), the hook portion 10b is provided on the upper surface of the bottom wall 8g of the housing. A front end portion 10b1, which tapers at the front end, is formed on the outer peripheral side of the hook portion 10b, and a protruding portion 10b2, which protrudes upward, is formed on the inner peripheral side of the hook portion 10b. Furthermore, it can be as follows... Figure 10 Like the protruding storage portion 42c2, the support portion 42c1 of the frame 42 in (c) extends toward the inner periphery of the frame 4, and the front end portion 10b1 of the hook portion 10b in the housing 10 extends toward the outer periphery of the housing 8 and fits into the opening formed by the support portion 42c1 and the protruding storage portion 42c2 toward the inner periphery of the frame 4. Thus, by fitting the hook portion 10b with the support portion 42c1 and the protruding storage portion 42c2, the downward load of the frame 42 can be supported.

[0141] In the described embodiment, an electronic cymbal is illustrated as an example of an electronic percussion instrument. However, it is not limited to this, and the technical concept of the described embodiment can certainly 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, for example, in the described embodiment, a circular plate-shaped frame is described as an example of the body component that serves as 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 may be rectangular, polygonal, or a combination of curves and straight lines. In addition, a structure in which the thickness dimension (vertical dimension) of the body component is thicker than the cover 5 may be used (for example, the body component may be formed into a box shape).

[0142] 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. Additionally, in the described embodiment, synthetic rubber is used to form the cover 5 and the shell 8, but this is not a limitation; other resin-based raw materials such as silicon can also be used.

[0143] In the described embodiment, the bell-shaped sensor 6 or the edge sensor 7 is attached to the bell-shaped portion 4a or the bow-shaped portion 4b of the frame 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 bell-shaped sensor 6 or the edge sensor 7 can also be attached to the bell-shaped portion 4a or the bow-shaped portion 4b of the frame 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 cover 5 to the frame 4 is not limited to adhesive bonding; any known joining method (e.g., fusing the cover 5 to the frame 4) can be used as long as it can be fixed relative to the frame 4.

[0144] In the described embodiment, the following situation is explained: the lower cover portion 5b2 does not engage with the lower surface of the curved portion 4b2 or the outer peripheral portion 4b3 of the frame bow-shaped portion 4b, and in the area where they do not engage, the lower surfaces of the curved 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, a structure with irregularities and irregularities can be formed on the lower surface of the frame bow-shaped portion 4b or the upper surface of the lower cover portion 5b2. As an example of such a structure, for example, a structure in which a notch is formed only on the lower surface of the frame bow-shaped portion 4b (the upper surface of the lower cover portion 5b2), or a structure with minor irregularities and irregularities formed on the lower surface of the frame bow-shaped portion 4b and the upper surface of the lower cover portion 5b2 to the extent that they do not hook into each other is shown.

[0145] In the described embodiment, a curved portion 4b2 and an outer peripheral portion 4b3 are formed on the outer edge of the body portion 4b1 of the frame bow-shaped portion 4b. However, this is not a limitation; the curved portion 4b2 or the outer peripheral portion 4b3 may be omitted, and the frame bow-shaped portion 4b may be configured as a frame without a step. In this case, as long as a recess is provided on the outer edge side of the lower surface of the upper cover portion 5b1 to form a space S, and the edge sensor 7b is housed in the space S, and the joining portion 5b4 of the inner edge portion of the lower cover portion 5b2 is omitted, the lower cover portion 5b2 can be joined to the lower surface of the frame bow-shaped portion 4b.

[0146] In the described embodiment, the case where the joining region R1 is located on the inner periphery side of the space S is explained. However, it is not limited to this, and the structure may also have the joining region R1 located on the outer periphery side of the space S. That is, if the structure is such that the lower cover portion 5b2 is not joined on the outer edge side of the lower surface of the frame bow-shaped portion 4b, then the structure may also be such that the lower cover portion 5b2 is joined on the lower surface of the curved portion 4b2 or the outer periphery portion 4b3 of the frame bow-shaped portion 4b.

[0147] In the described embodiment, a joining portion 5b4 is provided from the inner peripheral surface of the curved portion 4b2 of the frame bow portion 4b to the lower surface of the body portion 4b1. However, it is not limited to this; it may also be a structure in which the joining portion 5b4 is joined only to the inner peripheral surface of the curved portion 4b2, or a structure in which the joining portion 5b4 is joined only to the lower surface of the body portion 4b1.

[0148] 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 structure may also have the same thickness L1 as the upper cover portion 5b1, or it may have a structure where the thickness L1 of the lower cover portion 5b2 is larger than the thickness L2 of the upper cover portion 5b1.

[0149] In the described embodiment, the thickness L2 of the upper cover portion 5b1 is approximately constant in the region facing the upper surface of the outer periphery 4b3 of the frame bow portion 4b. However, this is not a limitation; a structure in which a portion of the thickness of the upper cover portion 5b1 is thinned is also possible. In this case, it is preferable to thin a portion of the thickness of the upper cover portion 5b1 further inward than the space S (edge ​​sensor 7b). For example, if a portion of the thickness of the upper cover portion 5b1 is thinned in the region where it does not engage with the upper surface of the frame bow portion 4b, the thin-walled portion extends and is easily elastically deformed.

[0150] In the described embodiment, the upper cover portion 5b1 is joined to the upper surface of the frame bow-shaped 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 curved portion 4b2. However, it is not limited to this, and the structure may also be that the upper cover portion 5b1 is integrally joined to the upper surface of the frame bow-shaped portion 4b.

[0151] 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 in the aforementioned area increases towards the outer periphery. As a result, 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. Therefore, 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. Thus, the impact on the upper cover portion 5b1 can be appropriately transmitted to the edge sensor 7b.

[0152] In the described embodiment, the case where the joining portion 5b4 is hooked onto the step formed by the curved portion 4b2 and the outer peripheral portion 4b3 is explained. However, it is not limited to this; a notch may also be formed on the lower surface of the frame bow-shaped portion 4b, and the joining portion 5b4 may be embedded into the notch. This restricts the displacement of the joining portion 5b4 toward both the outer peripheral side and the inner peripheral side. That is, if the engagement position is further toward the inner peripheral side than the lower surface of the frame bow-shaped portion 4b and the inner edge side of the lower cover portion 5b2 (the joining portion 5b4), 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.

[0153] In the described embodiment, the case where adhesive is prevented from flowing out to a side further inward than the joint 5b4 by forming a recess 5b5 on the upper surface of the joint 5b4 is explained. However, it is not limited to this, and the structure can also be such that the recess 5b5 (or other than the recess 5b5) is omitted and a recess is provided on the lower surface of the frame arched portion 4b to prevent adhesive from flowing out.

[0154] The values ​​listed in the embodiments are just examples, and other values ​​can certainly be used.

Claims

1. An electronic cymbal comprising: Comprise: a frame in a circular plate shape; and a case that is mounted to a bottom surface of the frame and protects an electronic component, a wall-shaped case inner wall that forms an inner peripheral side of the case is provided in the case, a wall-shaped case outer wall that forms an outer peripheral side is provided in the case, a wall-shaped case bottom wall that forms a bottom surface of the case is provided in the case, a frame-side mounting portion is provided in the frame, a case-side mounting portion is provided in the case, the case is mounted to the frame by fitting the frame-side mounting portion and the case-side mounting portion, the case-side mounting portion includes a hooking portion that includes a front end portion that is tapered at a front end, and a protruding portion that protrudes upward, the frame-side mounting portion includes a protrusion receiving portion that can receive an upper portion of the hooking portion of the case-side mounting portion, and a support portion that supports a bottom surface of the case-side mounting portion, the case outer wall is mounted to the frame by fitting the hooking portion of the case-side mounting portion into the protrusion receiving portion and the support portion of the frame-side mounting portion.

2. The electronic cymbal according to claim 1, wherein the hooking portion is provided at a position that is further outward than the case inner wall.

3. The electronic cymbal according to claim 2, wherein the hooking portion is provided at the case outer wall.

4. The electronic cymbal according to claim 2, wherein the hooking portion is provided at the case bottom wall.

5. The electronic cymbal according to any one of claims 2 to 4, wherein the case-side mounting portion is provided at the case inner wall, the case-side mounting portion includes an inner wrapping portion that wraps an inner peripheral side of the frame.

6. The electronic cymbal according to any one of claims 1 to 4, wherein a convex support column is provided in the case from a bottom surface toward an upper side, a convex restriction portion is provided in the frame at a bottom surface, in a state in which the case is mounted to the frame, movement of the case toward an inner peripheral side and an outer peripheral side is restricted by the inner peripheral side and the outer peripheral side of the support column abutting against the restriction portion.

7. The electronic cymbal according to claim 6, wherein the support column is formed so that, in a state in which the case is mounted to the frame, a gap is provided between an upper surface of the support column and the bottom surface of the frame.

8. The electronic cymbal according to any one of claims 1 to 4, wherein in the case, a support column mounting portion that mounts a support column that supports the electronic cymbal, and a protection portion that protects the electronic component are provided, a thick wall portion that is thicker than a wall thickness of the case bottom wall of the protection portion is formed at a position of the case bottom wall that faces the protection portion with the support column mounting portion as a reference.

9. The electronic cymbal according to any one of claims 3 to 4, wherein a length between a bottom surface of the hooking portion and an upper surface of the protruding portion is formed to be greater than a length between an upper surface of the support portion of the frame-side mounting portion and a bottom surface of the frame.

10. A case mounting method of mounting a case to a frame of an electronic cymbal including the frame in a circular plate shape and the case for protecting an electronic part, the case mounting method characterized by comprising: providing the case with a case inner wall in a wall shape forming an inner peripheral side of the case, a case outer wall in a wall shape forming an outer peripheral side, and a case bottom wall in a wall shape forming a bottom surface of the case; and mounting the case to the frame by fitting a frame side mounting portion provided to the frame to a case side mounting portion provided to the case, the case side mounting portion including a hooking portion including a front end portion tapered at a front end, and a protruding portion protruding upward, the frame side mounting portion including a protrusion receiving portion capable of receiving an upper portion of the hooking portion of the case side mounting portion, and a support portion supporting a bottom surface of the case side mounting portion, the case mounting method further including mounting the case outer wall to the frame by fitting the hooking portion of the case side mounting portion to the protrusion receiving portion and the support portion of the frame side mounting portion.

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