Digital piano sound source device
The electronic piano sound source device addresses the sound quality gap between electronic and conventional pianos by incorporating a sound plate with a resonance cavity and a speaker, enhancing training effectiveness and reducing costs.
Patent Information
- Application Number
- JP2025000198U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2024-10-09
- Filing Date
- 2025-01-21
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Electronic pianos fail to replicate the sound quality of conventional pianos, making them less effective for training and requiring the presence of expensive traditional pianos.
An electronic piano sound source device featuring a sound plate with a resonance cavity and a speaker, designed to simulate the vibrational sound of a conventional piano, enhancing sound quality and reducing costs.
The device significantly improves the sound quality and playing feel of electronic pianos, making them more effective for training while reducing the cost of learning.
Smart Images
Figure 0003250627000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to the field of loudspeaker technology, and more particularly to a sound source device for an electronic piano. [Background technology]
[0002] Currently, the tone of an electronic piano cannot reach that of a conventional piano, and therefore, when teaching, it is usually necessary to use a conventional piano, which is expensive. Therefore, an improved electronic piano sound source device is required to enable an electronic piano to produce the tone of a conventional piano, and to popularize it in the market. Summary of the Invention
[0003] The present invention provides a sound source device for an electronic piano, which has the same vocal principle and similar tone as a traditional piano, significantly improving the sound quality and playing sensation of the electronic piano, and reducing the cost of training. The present invention provides a sound source device for an electronic piano, comprising a soundboard and a speaker, the soundboard comprising a bottom plate, side plates and a cover plate, at least one side plate is provided under the cover plate, a bottom plate is attached to the lower end of the side plate, a resonant cavity is formed between the side plates, cover plate and bottom plate, an adhesive is applied between the side plates, cover plate and bottom plate to harden the whole, a mounting hole for mounting a speaker is provided in the center of the bottom plate, and the upper end of the speaker passes through the bottom plate and enters the resonant cavity. The soundboard of the present invention can effectively simulate the vibration sound of a conventional soundboard, and is the same as that of a conventional piano, and the side, cover and bottom panels are formed by hardening the adhesive between them to form a whole, which avoids the need for assembling other docking parts, making it easier to transmit vibrations, avoiding interference caused by transmission, and making the tone purer.By installing a resonant cavity, the sound generated by the speaker can be expanded and transmitted to the soundboard, reinforcing the sound generated when the soundboard resonates, and the sound generated by the soundboard can be matched with the electronic sound, forming a tone close to the woody sound of a conventional piano. An extended edge is provided on the outer lower end of the soundboard, and a number of assembly holes are provided on the extended edge. By setting the extended edge as a mounting connection site, the docking structure is prevented from affecting the entire soundboard, and the sound emitted from the soundboard is guaranteed to be purer. A small edge extension is provided on the lower edge of the speaker, and the edge extension is wrapped around the lower end surface of the base plate. By providing the edge extension, the base plate can be moved to vibrate, so that the base plate can move the entire soundboard to resonate. The edge extension is provided with some connection holes for docking with the bottom plate, and the provision of the connection holes ensures the docking between the speaker and the soundboard. The soundboard is attached to a mounting surface inside the electronic piano, and some elastic buffer blocks are installed between the extended edge of the soundboard and the mounting surface. The elastic buffer block is higher than the portion of the speaker that extends from the soundboard, so that the soundboard is left hanging when installed. The present invention installs an elastic buffer block to prevent the mounting surface of the electronic piano from moving when the soundboard vibrates, thereby avoiding interference between the electronic piano and the soundboard that would affect the overall tone, and the elastic buffer block can also enhance the vibration effect of the soundboard. The height of the elastic buffer block should be higher than the extended end of the speaker, otherwise the soundboard will hang down and resonance will be more likely to occur. The elastic buffer block and the assembly hole correspond one-to-one, which makes it easy to install and defines the position. The soundboard may have a polygonal or circular outer shape, and different shapes may be selected as required. The cover plate has a strip plate structure, and two side plates are symmetrically attached to both ends of the lower end surface of the cover plate. The side plates have a rectangular ring structure, and a bottom plate is attached to the lower opening of the side plate. The cover plate, the bottom plate, and the side plates form an integrated double resonant cavity structure. [Brief description of the drawings]
[0004] [Figure 1] FIG. 1 is a front view of the present invention. [Diagram 2] FIG. 2 is a top view of the present invention. [Diagram 3] FIG. 3 is a structural diagram of the elastic buffer block. [Figure 4] FIG. 4 is a schematic front view of the device attached to the top door of the electronic piano. [Diagram 5] FIG. 5 is a schematic side view of the device attached to the top door of the electronic piano. [Figure 6] FIG. 6 is a schematic front view of the device attached to the center plate of an electronic piano. [Figure 7] FIG. 7 is a schematic side view of the device attached to the center plate of an electronic piano. [Figure 8] FIG. 8 is a schematic front view of the device attached to the left and right side panels of an electronic piano. [Figure 9] FIG. 9 is a schematic diagram of the side structure attached to the left and right side panels of the electronic piano. [Figure 10] FIG. 10 is a schematic front view of the device attached to the lower door of an electronic piano. [Figure 11] FIG. 11 is a schematic side view of the device attached to the lower door of an electronic piano. [Figure 12] FIG. 12 is a structural diagram of a soundboard that selects a coupled double resonant cavity structure. BEST MODE FOR CARRYING OUT THEINVENTION
[0005] As shown in Figures 1 and 2, an embodiment of the present invention comprises a soundboard 1 and a speaker 2, the soundboard 1 comprises a bottom plate 5, side plates 3 and a cover plate 4, at least one side plate 3 is installed on the underside of the cover plate 4, the bottom plate 5 is attached to the lower end of the side plate 3, a resonant cavity 6 is formed between the side plate 3, the cover plate 4 and the bottom plate 5, and a colloidal adhesive is hardened between the side plate 3, the cover plate 4 and the bottom plate 5 to form the whole, an attachment hole for attaching a speaker 2 is provided in the center of the bottom plate 5, and the upper end of the speaker 2 passes through the bottom plate 5 to enter the resonant cavity 6. An extension 7 is provided on the outer lower end of the soundboard 1, and a number of assembly holes 8 are provided in the extension. A slight edge extension 9 is provided on the lower edge of the speaker 2 , and the edge extension 9 is wrapped around the lower surface of the bottom plate 5 . The edge extension 9 is provided with some connection holes 10 for docking with the bottom plate 5 . As shown in FIG. 3, the soundboard 1 is attached to a mounting surface within an electronic piano 11, and a slight elastic buffer block 12 is provided between the extended edge 7 of the soundboard 1 and the mounting surface. The elastic buffer block 12 is higher than the portion of the speaker 2 that extends from the soundboard 1, and causes the soundboard 1 to hang down when attached. The elastic buffer block 12 and the assembly hole 8 correspond one-to-one, so that the elastic buffer block 12 can be easily attached and the attachment position for the elastic buffer block 12 is limited. The soundboard 1 has a polygonal or circular outer shape. The cover plate 4 has a strip plate structure, and two side plates 3 are symmetrically attached to both ends of the lower end surface of the cover plate 4. The side plates 3 have a rectangular ring structure, and a bottom plate 5 is attached to the lower opening of the side plate 3. The cover plate 4, the bottom plate 5 and the side plates 3 form an integrated double resonant cavity structure.
[0006] The soundboard 1 may be made in different sizes and shapes, for example rectangular, square, diamond, petal-shaped, trapezoidal, circular, oval and regular polygonal. As shown in Figures 1 and 2, when the speaker 2 produces sound, the vibration block inside the lower part of the speaker 2 moves the diaphragm and the resonating sheet to produce electronic sound, and the edge extension 9 of the speaker 2 can move the bottom plate 5 to vibrate, and the vibration is transmitted to the entire soundboard 1, causing the soundboard to resonate. During resonance, a sound similar to that of the original wooden soundboard is produced, and the sound emitted from the speaker 2 is connected to the resonating cavity 6, and a louder sound is produced after the connection, which enhances the delay effect, makes the soundboard 1 closer to the sound produced by a conventional piano, significantly improves the sound quality, and makes the sound of the electronic piano closer to the tone of a conventional piano.
[0007] The loudspeaker structure of the present invention can be attached to an appropriate position of the electronic piano 11 as required. As shown in Figures 4 and 5, this device may be attached to the upper door 13 of the electronic piano. The device is symmetrically attached to the inside surface of the upper door 13 of the electronic piano, which is the position closest to the player, and it is convenient for the player to intuitively know the tone and playing condition. As shown in Figures 6 and 7, this device can be attached to the center plate 14 of the electronic piano. Two of these devices are symmetrically attached to the front upper end surface of the center plate 14 of the electronic piano, and the device is directly connected to the center plate 14 of the electronic piano. This device makes it easier to enhance the original tone, reduce the integrated geometric volume, save space, reduce the occupation of the player's foot space, and make it more comfortable for the player to play. As shown in Figures 8 and 9, two of the devices may be attached to the left and right side panels 15 of an electronic piano 11, making full use of the internal space of the piano and facilitating maintenance, cleaning and teaching of the piano. As shown in Figures 10 and 11, two of the devices may be mounted side by side on the lower door 16 of the electronic piano 11, which saves space on the center plate of the electronic piano and, when there is a dust cover, provides the best sound output effect for the device mounted on the lower door.
[0008] As shown in FIG. 12, when the soundboard 1 has an integrated double resonant cavity structure, the cover plate 4 in the soundboard 1 has a rectangular strip structure, and two side plates 3 are symmetrically attached to both ends of the lower end surface of the cover plate 4, so that the side plates 3 have a rectangular ring structure and cable outlet holes are opened on the opposite sides of the side plates 3. First, the speaker 2 and the bottom plate 5 are attached, and then the cable of the speaker 2 is pulled out from the cable outlet hole. After that, the bottom plate 5 is docked with the lower end of the side plate 3, so that the upper part of the speaker 2 is located inside the side plate 3. At the same time, the adhesive between the side plate 3, the cover plate 4 and the bottom plate 5 is hardened. Finally, the upper surface of the cover plate 4 is engraved and thermally printed to ensure the aesthetic appearance of the external shape. [Explanation of symbols]
[0009] 1 soundboard 2 Speakers 3 Side Panel 4 Lid plate 5 Bottom plate 6 Resonant Cavity 7 Extended edge 8 assembly hole 9 Edge extension 10 Connection hole 11. Digital Piano 12 Elastic shock absorber block 13. Top door of electronic piano 14 Digital piano center plate 15 Left and right side panels of electronic piano 16 Lower door of electronic piano
Claims
1. A sound source device for an electronic piano, comprising a soundboard (1) and a speaker (2), the soundboard (1) comprising a bottom plate (5), side plates (3) and a cover plate (4), at least one side plate (3) is provided under the cover plate (4), the bottom plate (5) is attached to the lower end of the side plate (3), a resonance cavity (6) is formed surrounded by the side plate (3), the cover plate (4) and the bottom plate (5), an adhesive is hardened between the side plate (3), the cover plate (4) and the bottom plate (5) to form a whole, a mounting hole for mounting a speaker (2) is provided in the center of the bottom plate (5), and an upper end of the speaker (2) passes through the bottom plate (5) and enters the resonance cavity (6).
2. 2. The sound source device of claim 1, wherein an extension edge (7) is provided on the outer lower end of the soundboard (1), and a number of vertical holes (8) are provided on the extension edge (7).
3. 2. The sound source device of an electronic piano according to claim 1, wherein a slight edge extension (9) is provided on the lower edge of the speaker (2), and the edge extension (9) is wrapped around the lower end surface of the bottom plate (5).
4. 4. The sound source device of claim 3, wherein the edge extension (9) is provided with a connection hole (10) for docking with a bottom plate (5).
5. The sound source device for an electronic piano as described in claim 2, characterized in that the soundboard (1) is attached to a mounting surface inside the electronic piano (11), and a slightly elastic cushioning block (12) is installed between the extended edge (7) of the soundboard (1) and the mounting surface.
6. 6. The sound source device for an electronic piano according to claim 5, wherein the elastic buffer block (12) is higher than a portion of the speaker (2) extending from the soundboard (1).
7. 6. The sound source device for an electronic piano according to claim 5, wherein the elastic buffer blocks (12) and the assembly holes (8) correspond one-to-one.
8. 2. The sound source device for an electronic piano according to claim 1, wherein the outer shape of the soundboard (1) is polygonal or circular.
9. The sound source device of an electronic piano as described in claim 1, characterized in that the cover plate (4) has a strip-shaped structure, two side plates (3) are symmetrically attached to both ends of the lower end surface of the cover plate (4), the side plates (3) have a rectangular ring-shaped structure, a bottom plate (5) is attached to the lower opening of the side plates (3), and the cover plate (4), the bottom plate (5), and the side plates (3) form a connected double resonance cavity structure.