CN210378429U

CN210378429U - Thumb musical instrument

Info

Publication number: CN210378429U
Application number: CN201920656960.1U
Authority: CN
Inventors: 王智超
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-04-21
Anticipated expiration: 2029-05-08

Abstract

The utility model relates to a thumb piano, including musical instrument case, key seat, bridge and a plurality of keys, bridge and key seat fixed mounting are on the musical instrument case, the key seat of the said musical instrument be the U-shaped structure, the bottom surface of the key seat of the musical instrument is the planar structure, the bottom surface is fixed with the musical instrument case and is hugged closely, the front and back both sides of the key seat extend upwards respectively, the front side forms the layering frame, the back side forms the supporting frame; the supporting frame is provided with a plurality of key pressing holes, the supporting frame is provided with a plurality of key supporting grooves, the key pressing holes correspond to the key supporting grooves one by one, and the keys penetrate through the key pressing holes and the key supporting grooves; the front ends of the keys are attached to the bridge, the middle parts of the keys are attached to the upper end face of the key pressing hole, and the rear ends of the keys are attached to the key supporting grooves; and a first arc-shaped contact surface protruding downwards is arranged on the upper end surface of the key pressing hole. A thumb musical instrument, its rational in infrastructure compactness, easily equipment and maintenance, pronunciation switching part reduces, the position reduces takes place for the noise.

Description

Thumb musical instrument

Technical Field

The utility model belongs to the technical field of the thumb musical instrument and specifically relates to a thumb musical instrument.

Background

The thumb piano is a national musical instrument with national characteristics in Africa. The musical instrument mainly obtains a name by poking a thin sheet on the instrument body with a thumb, and generally comprises a bottom plate, a backing plate and a steel sheet, wherein the steel sheet is pressed down by the thumbs of two hands and then released, and the musical instrument generates sound through vibration and is mainly used for accompanying singing. The prior thumb piano has the following defects: 1. the contact points of the sounding part and the box body are more, the sounding of the sounding point is asynchronous, mixed sound is generated, and the effective sounding area is dispersed. 2. The batten and the key form a contact surface, the cross section of the whole key is in contact with the batten, and when the key deforms or the batten is stamped unevenly, the contact point of the key of the batten has vibration friction to generate noise.

Disclosure of Invention

The utility model discloses an overcome the problem that exists among the above-mentioned, provide a thumb musical instrument, its compactness rational in infrastructure easily assembles and maintains, and pronunciation switching part reduces, and the position reduces takes place for the noise.

The utility model provides a technical scheme that its technical problem adopted is: a thumb piano comprises a piano case, a piano keyboard seat, a piano code and a plurality of keys, wherein the piano code and the piano keyboard seat are fixedly arranged on the piano case, the piano keyboard seat is of a U-shaped structure, the bottom surface of the piano keyboard seat is of a planar structure, the bottom surface of the piano keyboard seat is fixedly attached to the piano case, the front side and the rear side of the piano keyboard seat respectively extend upwards, a batten frame is formed on the front side, and a supporting frame is formed on the rear side of the piano seat; the supporting frame is provided with a plurality of key pressing holes, the supporting frame is provided with a plurality of key supporting grooves, the key pressing holes correspond to the key supporting grooves one by one, and the keys penetrate through the key pressing holes and the key supporting grooves; the front ends of the keys are attached to the bridge, the middle parts of the keys are attached to the upper end face of the key pressing hole, and the rear ends of the keys are attached to the key supporting grooves; and a first arc-shaped contact surface protruding downwards is arranged on the upper end surface of the key pressing hole.

Preferably, the bottom surface of the key supporting groove is provided with a second arc-shaped contact surface that protrudes upward.

Preferably, the upper end of the batten frame is provided with at least one layer of bend.

Preferably, the upper end face of the bridge is of a cambered surface structure.

Preferably, the bottom surface of the piano key seat is provided with at least one mounting hole, and the mounting hole is fixedly attached to the piano box through a mounting screw.

Preferably, the mounting holes are arranged in two rows.

The utility model has the advantages that: the thumb piano, its is rational in infrastructure compact, easily assembles and maintains, and the key supporting slot makes every key separate by an interval before, can not let the key displacement, and the interval size is fit for the finger motion, and the design of piano keybed is with the lower bridge and the layering integration of traditional thumb piano, promptly, supporting slot, layering frame and the design of piano keybed integration, and pronunciation switching part reduces, and the position reduces takes place for the noise. The bottom sounding part of the key seat is completely combined with the box body, the whole sounding is realized, the sound is clear and bright, the key pressing hole adopts a downward convex arc-shaped contact surface to form a contact point with the key instead of a contact surface, and the occurrence probability of noise is reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of a thumb piano of the present invention;

fig. 2 is a schematic structural diagram of a key base of a thumb piano of the present invention;

fig. 3 is an enlarged structural schematic diagram of a key base of a thumb piano of the present invention;

fig. 4 is a schematic side structure view of the thumb piano of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example 1

As shown in fig. 1, 2, 3 and 4, the thumb piano comprises a piano cabinet 1, a key base 2, a bridge 3 and a plurality of keys 4, wherein the bridge 3 and the key base 2 are fixedly mounted on the piano cabinet 1, the key base 2 is of a U-shaped structure, the bottom surface of the key base 2 is of a plane structure, the bottom surface is fixedly attached to the piano cabinet 1, the front side and the rear side of the key base 2 respectively extend upwards, the front side forms a batten frame 21, and the rear side forms a supporting frame 22; the bar pressing frame 21 is provided with a plurality of key pressing holes 211, the supporting frame 22 is provided with a plurality of key supporting grooves 221, the key pressing holes 211 correspond to the key supporting grooves 221 one by one, and the keys 4 penetrate through the key pressing holes 221 and the key supporting grooves 221; the front ends of the keys 4 are attached to the bridge 3, the middle parts of the keys are attached to the upper end face of the key pressing hole 211, and the rear ends of the keys are attached to the key supporting grooves 221; the upper end surface of the key pressing hole 211 is provided with a first arc-shaped contact surface 212 protruding downwards.

The support frame 22 is adopted to replace the lower bridge of the traditional thumb piano, the batten frame 21 replaces the batten of the traditional thumb piano, and the support frame 22 and the batten frame 21 are integrally designed through the piano key seat 2, so that the number of pronunciation switching parts is reduced, and the number of noise generating parts is reduced.

The key supporting grooves 221 are formed in the front of each key and are spaced, so that the keys cannot move, and the spacing is suitable for the movement of fingers.

In the thumb piano of the embodiment, the layering frame 21 and the key base are integrally designed, so that the pronunciation switching components are reduced, and the noise generation parts are reduced. The bottom sounding part of the key seat is completely combined with the box body, so that the whole sounding is realized, and the sound is clear and surging. The key pressing hole 211 adopts an arc-shaped contact surface which is convex downwards, and forms a contact point with the key 4 instead of a contact surface, so that the occurrence probability of noise is reduced.

Example 2

The bottom surface of the key supporting groove 221 is provided with a second arc-shaped contact surface 222 that protrudes upward. The keys form contact points with the key supporting grooves 221 instead of contact surfaces, and the occurrence probability of noise is reduced.

The upper end of the strip pressing frame 21 is provided with at least one layer of bend. The strip pressing frame 21 applies downward pressure, higher strength is required, and the multi-layer bending improves the strength of the strip pressing frame 21. In this embodiment two layers.

The upper end face of the bridge 3 is of a cambered surface structure. Forming a contact point with the key 4 instead of a contact surface, the occurrence probability of noise is reduced.

The bottom surface of the piano key seat 2 is provided with at least one mounting hole 23, and the mounting hole 23 is internally fixed and tightly attached to the piano case 1 through a mounting screw. The mounting holes 23 are arranged in two rows. The bottom sounding part of the key seat is completely combined with the box body, so that the whole sounding is realized, and the sound is clear and surging.

Thumb musical instrument, its compact structure is equitable, easily equipment and maintenance, key supporting groove 221 makes every key separate by an interval before, can not let the key displacement, the interval size is fit for the finger motion, the design of musical instrument key seat is with the lower musical instrument sign indicating number and the layering integration of traditional thumb musical instrument, promptly, supporting groove 221, layering frame 21 and the design of key seat integration, pronunciation switching part reduces, the position reduction takes place for the noise. The bottom sounding part of the key seat is completely combined with the box body, so that the whole sounding is realized, and the sound is clear and surging. The key pressing hole 211 adopts an arc-shaped contact surface which is convex downwards, and forms a contact point with the key 4 instead of a contact surface, so that the occurrence probability of noise is reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A thumb musical instrument is characterized in that: the piano key seat is of a U-shaped structure, the bottom surface of the piano key seat is of a planar structure, the bottom surface is fixedly attached to the piano box, the front side and the rear side of the piano key seat respectively extend upwards, the front side forms a batten frame, and the rear side forms a supporting frame; the supporting frame is provided with a plurality of key pressing holes, the supporting frame is provided with a plurality of key supporting grooves, the key pressing holes correspond to the key supporting grooves one by one, and the keys penetrate through the key pressing holes and the key supporting grooves; the front ends of the keys are attached to the bridge, the middle parts of the keys are attached to the upper end face of the key pressing hole, and the rear ends of the keys are attached to the key supporting grooves; and a first arc-shaped contact surface protruding downwards is arranged on the upper end surface of the key pressing hole.

2. The thumb piano of claim 1, wherein: and a second arc-shaped contact surface protruding upwards is arranged on the bottom surface of the key supporting groove.

3. The thumb piano of claim 1, wherein: the upper end face of the bridge is of a cambered surface structure.

4. The thumb piano of claim 1, wherein: the bottom surface of the piano key seat is provided with at least one mounting hole, and the mounting hole is fixedly attached to the piano cabinet through a mounting screw.

5. The thumb piano of claim 4, wherein: the mounting holes are arranged in two rows.