CN216980109U

CN216980109U - Portable electroacoustic cello

Info

Publication number: CN216980109U
Application number: CN202123063020.8U
Authority: CN
Inventors: 吴大旷
Original assignee: Shanghai East Musical Instrument Co ltd
Current assignee: Shanghai East Musical Instrument Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-07-15
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a portable electroacoustic cello, which comprises a violin head, a violin neck, string rolls, a violin body, a positioning screw, an adjustable bridge, a pickup, a chest support and a knee support, wherein the violin body is in a shuttle shape, a detachable plug structure which is matched with each other is arranged between the violin neck and the violin body, the positioning screw is detachably connected with the detachable plug structure, and the chest support and the knee support are detachably connected with the violin body; the supporting foot is positioned at the lower end of the musical instrument body. The utility model has the advantages that: the volume and the weight of the cello are greatly reduced, and the cello is more convenient to carry and transport; the material is saved, the process is simplified, and the cost is reduced; the cello can better meet the requirements of outdoor performance.

Description

Portable electroacoustic cello

Technical Field

The utility model relates to the technical field of electroacoustic stringed instruments, in particular to a portable electroacoustic cello.

Background

The cello is an indispensable secondary mediant or bass string instrument in orchestra. The viola is rich in tone color, has bright characters, is good at playing melodies with lyrics, expresses deep and complex feelings, is widely applied to music playing, and is called as "noble woman of music".

However, the traditional cello has the defects of large volume and heavy weight, so that the cello is very inconvenient to carry by a user. In addition, with the rise of popular music and the increase of social demands of commercial activities, the traditional cello originally suitable for indoor performances does not have the volume amplification function and can not meet the requirements of outdoor commercial activities.

Therefore, a portable electroacoustic cello which is lighter and more convenient to carry and can well meet the outdoor playing requirement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a portable electroacoustic cello, which adopts a detachable design of a cello body and a cello neck, greatly reduces the size of the cello body, adopts a plurality of detachable supporting pieces meeting the ergonomics of cello playing, is provided with a pickup for converting a physical vibration signal into an electronic vibration signal and well solves the technical problems.

The technical scheme of the utility model is as follows: a portable electroacoustic cello is characterized by comprising a head, a neck, string rolls, a body, a positioning screw, an adjustable bridge, a pickup, a chest support, a knee support and a supporting foot, wherein the body is integrally fusiform, a detachable plug structure which is mutually matched is arranged between the neck and the body, the positioning screw is detachably connected with the detachable plug structure, the chest support is arranged on the upper part of the back of the body, the knee support is arranged on the left side and the right side of the middle lower part of the body, the pickup is arranged in the middle of the back of the body, and the chest support, the knee support and the body are detachably connected; the supporting feet are positioned at the lower end of the musical instrument body.

The body is designed into a shuttle-shaped structure, so that the volume structure of the body becomes simpler, the size 760mm, 43mm and 16mm of the bulked size of the traditional viola cello body is reduced by 60 percent, the body becomes lighter and the material is saved; in addition, the positioning screw is a key for connecting the neck and the body and is a main component for reducing the volume and the length of the body, and the positioning screw has the functions of positioning and reinforcing; when a player plays and uses the music instrument, the player only needs to twist the positioning screw to connect the music instrument up and down, and the player only needs to disassemble the package when not in use, so that the volume is greatly reduced, and the carrying is convenient; in addition, because the thickness of the body is thinner than that of the traditional cello and the body is narrowed, a player can not conform to the human engineering when using the cello, and the playing is uncomfortable; the chest support is added to maintain the proper thickness of the body, the knee support is added to maintain the proper width of the body, and the proper thickness and width of the body are provided, so that the use habit and comfort level of a player are met; the supporting feet can extend the length of the musical instrument body so as to be suitable for playing users with different heights.

Preferably, the adjustable bridge comprises: the height-adjusting screw is in threaded connection with the upper plate and the lower plate, and the distance between the upper plate and the lower plate can be adjusted. The adjustable bridge breaks through the traditional integrated bridge, and the lifting screw rod which can be controlled by the matching of the upper layer structure and the lower layer structure can be lifted and lowered, so that the deformation problem of the traditional bridge caused by long-time use and abrasion is avoided, the chord height size can be adjusted at any time, and the normal use of a player is ensured; in addition, the adjustable bridge also provides possibility for reducing the thickness dimension of the piano.

Preferably, the string roll adopts a rotary sheet structure which is triangular as a whole and is made of plastic steel materials. The string roll structure breaks through the traditional 'finger hand' made by ebony by hand, and the 'string roll' made of plastic steel material by modern process means makes the tuning/fixing change more convenient without the problems of 'sliding sound' and the like; meanwhile, wood resources are saved, the productivity is improved, and the modeling is modern.

Preferably, the headstock is of a structure with a generally triangular cross section, and the detachable plug-in structure is of a mortise-tenon structure. The headstock structure breaks through the traditional vortex-shaped complex structure, is replaced by a simpler planar structure, saves materials, simplifies the process, reduces the cost and has modern modeling; the afterbody of musical instrument neck to the tenon fourth of the twelve earthly branches structure of chinese style furniture is convenient for link up with the musical instrument body, the dismouting combination of being convenient for.

Preferably, the sound pickup comprises a shell, a circuit board, a pickup line, a pickup rod and a potentiometer, wherein the shell is a metal shell; the circuit board is made of an explosion-proof material with a metal coating and has high fidelity noise reduction, background noise reduction and echo elimination functions; the sound pick-up is provided with sound pick-up lines respectively amplified by a left sound channel and a right sound channel; the sound pick-up adopts a piezoelectric film type and soft line type sound pick-up rod, the number of winding wire turns of the potentiometer is 9800-10000 turns, the sound pick-up is provided with a PR-100 audio alarm adapter, and the voltage is 9V. The sound pick-up is a core component for changing the traditional acoustic cello into an electro-acoustic cello. Because the size of the body of the violoncello is greatly reduced, a 'resonance box' of the traditional violoncello which produces sound and vibrates does not exist, the body of the violoncello becomes an entity, and how to convert wood vibration signals into electronic vibration, so that sound is picked up only by a sound pick-up. Through so setting up the adapter, can make the adapter pick up the vibration signal of the mechanical physics of the musical instrument body to the signal of telecommunication that accords with the performance vibrations standard, cross amplifier circuit again and convert weak signal of telecommunication into the input signal that the audio amplifier can receive, change the tone of sound at the amplification process, make its at utmost restore the tone quality of violin stringed musical instrument, become the musical instrument that has the performance practical function.

Preferably, the whole chest support is of an S-shaped structure; the knee support is of a C-shaped structure as a whole.

The utility model has the following beneficial effects:

1) through the detachable neck, the detachable body and the detachable supporting pieces, the size and the weight of the cello are greatly reduced, and the cello is more convenient to carry and transport.

2) The design and the modeling are more concise, the materials are saved, the process is simplified, the cost is reduced, the modeling is modern, the ergonomic requirement of a player is better met, and the playing comfort level is obviously improved.

3) The sound is picked up by the sound pick-up which converts a physical vibration signal into an electronic vibration signal, and the traditional acoustic cello is converted into an electro-acoustic cello, so that the defects that the traditional cello is limited in volume and amplification and is not suitable for outdoor and commercial performances are overcome.

Drawings

Fig. 1 is a schematic front view of a portable electro-acoustic cello according to the present invention;

fig. 2 is a schematic rear view of the portable electroacoustic cello of the present invention;

fig. 3 is a schematic right view of the portable electro-acoustic cello of the present invention;

fig. 4 is a schematic view of the portable electroacoustic cello of the present invention in a disassembled state.

Detailed Description

The present invention will be further illustrated by the following specific examples.

Example 1

Referring to fig. 1-4, a portable electroacoustic cello is characterized by comprising a head 1, a neck 2, a string coil 3, a body 4, a set screw 5, an adjustable bridge 6, a pickup 7, a chest support 8, a knee support 9 and a supporting foot 10, wherein the body is integrally in a shuttle shape, a mutually matched detachable tenon-and-mortise structure is arranged between the neck and the body, the set screw and the detachable plug-in structure are detachably connected, the chest support is arranged on the upper portion of the back of the body, the knee support is arranged on the left side and the right side of the middle lower portion of the body, the pickup is arranged in the middle of the back of the body, and the chest support, the knee support and the body are detachably connected; the supporting feet are positioned at the lower end of the musical instrument body. The adjustable bridge comprises: the device comprises an upper plate 60, a lower plate 61 and a height-adjusting screw rod 62, wherein the height-adjusting screw rod is in threaded connection with the upper plate and the lower plate, and the distance between the upper plate and the lower plate can be adjusted. The string roll adopts a rotary sheet structure which is integrally triangular and is made of plastic steel material. The headstock adopts a structure with a generally triangular cross section. The whole chest support is of an S-shaped structure; the knee support is of a C-shaped structure as a whole. The sound pick-up comprises a shell, a circuit board, a sound pick-up wire, a sound pick-up rod and a potentiometer (not shown), wherein the shell is a metal shell; the circuit board is made of an explosion-proof material with a metal coating and has high fidelity noise reduction, background noise reduction and echo elimination functions; the sound pick-up is provided with sound pick-up lines respectively amplified by a left sound channel and a right sound channel; the sound pick-up adopts a piezoelectric film type and soft line type sound pick-up rod, the number of winding wire turns of the potentiometer is 9800, the sound pick-up is provided with a power supply PR-100 audio alarm adapter, and the voltage is 9V.

Example 2

Referring to fig. 1-4, the portable electric production cello is characterized by comprising a head 1, a neck 2, a string roll 3, a body 4, a set screw 5, an adjustable bridge 6, a pickup 7, a chest support 8, a knee support 9 and a supporting foot 10, wherein the body is integrally in a shuttle shape, a mutually matched detachable mortise and tenon structure is arranged between the neck and the body, the set screw and the detachable inserting structure are detachably connected, the chest support is arranged on the upper portion of the back of the body, the knee support is arranged on the left side and the right side of the middle lower portion of the body, the pickup is arranged on the middle portion of the back of the body, and the chest support, the knee support and the body are detachably connected; the supporting feet are positioned at the lower end of the musical instrument body. The adjustable bridge comprises: the device comprises an upper plate 60, a lower plate 61 and an heightening screw rod 62, wherein the heightening screw rod is in threaded connection with the upper plate and the lower plate, and the distance between the upper plate and the lower plate can be adjusted. The string roll adopts a rotary sheet structure which is integrally triangular and is made of plastic steel material. The headstock adopts a structure with a generally triangular cross section. The whole chest support is of an S-shaped structure; the knee support is of a C-shaped structure as a whole. The sound pick-up comprises a shell, a circuit board, a sound pick-up wire, a sound pick-up rod and a potentiometer, wherein the shell is a metal shell; the circuit board is made of an explosion-proof material with a metal coating and has high fidelity noise reduction, background noise reduction and echo elimination functions; the sound pick-up is provided with sound pick-up lines respectively amplified by a left sound channel and a right sound channel; the pickup adopts a piezoelectric film type and soft line type pickup rod, the number of winding wire turns of the potentiometer is 9900, the pickup is provided with a power supply PR-100 audio alarm adapter, and the voltage is 9V.

Example 3

Referring to fig. 1-4, a portable electroacoustic cello is characterized by comprising a head 1, a neck 2, a string coil 3, a body 4, a set screw 5, an adjustable bridge 6, a pickup 7, a chest support 8, a knee support 9 and a brace 10, wherein the body is in a shuttle shape as a whole, a mutually matched detachable mortise and tenon structure is arranged between the neck and the body, the set screw and the detachable inserting structure are detachably connected, the chest support is arranged on the upper part of the back of the body, the knee support is arranged on the left side and the right side of the middle lower part of the body, the pickup is arranged on the middle part of the back of the body, and the chest support, the knee support and the body are detachably connected; the supporting feet are positioned at the lower end of the musical instrument body. The adjustable bridge comprises: the device comprises an upper plate 60, a lower plate 61 and a height-adjusting screw rod 62, wherein the height-adjusting screw rod is in threaded connection with the upper plate and the lower plate, and the distance between the upper plate and the lower plate can be adjusted. The string roll adopts a rotary sheet structure which is integrally triangular and is made of plastic steel material. The headstock adopts a structure with a cross section which is generally triangular. The whole chest support is of an S-shaped structure; the whole knee support is of a C-shaped structure. The sound pick-up comprises a shell, a circuit board, a sound pick-up wire, a sound pick-up rod and a potentiometer, wherein the shell is a metal shell; the circuit board is made of an explosion-proof material with a metal coating and has high fidelity noise reduction, background noise reduction and echo elimination functions; the sound pick-up is provided with sound pick-up lines respectively amplified by a left sound channel and a right sound channel; the pickup adopts a piezoelectric film type and soft line type pickup rod, the number of winding wire turns of the potentiometer is 10000, the pickup is provided with a PR-100 audio alarm adapter, and the voltage is 9V.

The utility model has the advantages that: 1) through the detachable neck, the detachable body and the detachable supporting pieces, the size and the weight of the cello are greatly reduced, and the cello is more convenient to carry and transport.

The above examples are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A portable electroacoustic cello is characterized by comprising a head, a neck, string rolls, a body, a positioning screw, an adjustable bridge, a pickup, a chest support, a knee support and a supporting foot, wherein the body is integrally fusiform, a detachable plug structure which is mutually matched is arranged between the neck and the body, the positioning screw is detachably connected with the detachable plug structure, the chest support is arranged on the upper part of the back of the body, the knee support is arranged on the left side and the right side of the middle lower part of the body, the pickup is arranged in the middle of the back of the body, and the chest support, the knee support and the body are detachably connected; the supporting feet are positioned at the lower end of the musical instrument body.

2. The portable electro-acoustic cello of claim 1, wherein: the adjustable bridge comprises: the height-adjusting screw rod is in threaded connection with the upper plate and the lower plate, and the distance between the upper plate and the lower plate can be adjusted.

3. The portable electro-acoustic cello of claim 1 or 2, wherein: the string roll adopts a rotary sheet structure which is integrally triangular and is made of plastic steel material.

4. The portable electro-acoustic cello of claim 1 or 2, wherein: the headstock is of a structure with a triangular cross section, and the detachable plug-in structure is of a mortise-tenon joint structure.

5. The portable electro-acoustic cello of claim 1 or 2, wherein: the sound pick-up comprises a shell, a circuit board, a sound pick-up wire, a sound pick-up rod and a potentiometer, wherein the shell is a metal shell; the circuit board is made of an explosion-proof material with a metal coating and has high fidelity noise reduction, background noise reduction and echo elimination functions; the sound pick-up is provided with sound pick-up lines respectively amplified by a left sound channel and a right sound channel; the sound pick-up adopts a piezoelectric film type and soft line type sound pick-up rod, the number of winding wire turns of the potentiometer is 9800 and 10000, the sound pick-up is provided with a power supply PR-100 audio alarm adapter, and the voltage is 9V.

6. The portable electro-acoustic cello of claim 1 or 2, wherein: the whole chest support is of an S-shaped structure; the knee support is of a C-shaped structure as a whole.