CN211507084U

CN211507084U - Slow descending device for piano keyboard cover

Info

Publication number: CN211507084U
Application number: CN202020048693.2U
Authority: CN
Inventors: 谢东
Original assignee: Hunan University of Humanities Science and Technology
Current assignee: Hunan University of Humanities Science and Technology
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-15
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a slow descending device for a piano keyboard cover, which comprises a slow descending component, a piano panel and a cover plate; the two sides of the piano panel are symmetrically provided with slow descending assemblies, and the two sides of the piano panel are symmetrically provided with cavities; the slow descending assembly comprises a lifting rod, a spring, a pressing plate and a transmission part; the transmission part comprises a gear and a power part; the first through hole and the second through hole are oppositely arranged on the piano panel and are positioned above and below the cavity; the transmission part is arranged in a cavity of the piano panel; the top end of the lifting rod is rotatably connected with the bottom of the cover plate; the lifting rod sequentially penetrates through the first through hole and the cavity on the piano panel and then penetrates out of the second through hole; the gear is meshed with the rack and is connected with the power part; the pressure plate overcoat is at the external screw thread section department of lifter, and the lifter overcoat has the spring between pressure plate and piano panel below. The utility model discloses simple structure, convenient to use, low in manufacturing cost slowly falls effectually, safe and reliable.

Description

Slow descending device for piano keyboard cover

Technical Field

The utility model belongs to the technical field of the piano technique and specifically relates to a piano keyboard lid slowly falls device is related to.

Background

A piano is a keyboard instrument derived from western classical music. The piano keyboard consists of keys and a metal string soundboard. The range of the musical range is wide, and almost all musical tones in the musical tone system are included. The piano is commonly used for solo, repetition, accompaniment and other performances, and is very convenient for composing music and rehearsing music. The player drives a small mallet covered with a felt in the piano by pressing keys on the keyboard, and then strikes the steel wire strings to make sound. Because of its wide range and beautiful timbre, piano is called the king of musical instrument, and is called three world instruments together with violin and classical guitar. When the cover plate of the existing piano keyboard is closed, fingers of a piano player can be pressed due to careless turning down of the cover plate, the cover plate often falls down too fast to give out strong collision sound, so that people are frightened and disturbed, and meanwhile, paint on the surface of the cover plate is damaged due to long-term collision, so that the high-class appearance aesthetic feeling of the piano is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough with regard to overcoming prior art, provide a simple structure, convenient to use, low in manufacturing cost slowly falls effectually, safe and reliable's piano keyboard lid slowly falls device.

In order to achieve the purpose, the utility model provides a slow descending device for a piano keyboard cover, which comprises a slow descending component, a piano panel and a cover plate; a groove is formed in the middle of the upper surface of the piano panel, a keyboard is arranged in the groove, and the cover plate is rotatably connected with the piano panel and used for covering the keyboard; slow descending assemblies are symmetrically arranged on two sides of the piano panel, and cavities are symmetrically arranged on two sides of the piano panel; the slow descending assembly comprises a lifting rod, a spring, a pressing plate and a transmission part; the transmission part comprises a gear and a power part; the piano panel is provided with a first through hole and a second through hole which are opposite to each other; the transmission part is arranged in the cavity; the top end of the lifting rod is rotatably connected with the bottom of the cover plate; the lifting rod sequentially penetrates through the first through hole and the cavity on the piano panel and then penetrates out of the second through hole; the lifting rod is positioned in the cavity and is sequentially provided with a rack and an external thread section from top to bottom; the gear is meshed with the rack and is connected with the power part; the pressure plate is provided with an internal thread hole matched with the external thread section, the pressure plate is sleeved at the external thread section of the lifting rod, and a spring is sleeved outside the lifting rod between the pressure plate and the lower part of the piano panel; rubber pads are arranged at two edges of the bottom of the cover plate.

Furthermore, the power part is a motor, and the gear is arranged on an output shaft of the motor; or the power part comprises a speed reducer and a motor connected with the speed reducer, and the gear is arranged on an output shaft of the speed reducer.

Furthermore, a counter bore and a bolt hole communicated with the counter bore are formed in the rubber pad, and a threaded blind hole is formed in the bottom of the cover plate; the screw penetrates through the counter bore and the bolt hole in sequence and then is in threaded connection with the threaded blind hole; the screw head of the screw sinks in the counter bore.

Further, the screw is a socket head cap screw.

The utility model has the advantages that: the utility model discloses under the effect of slowly falling the subassembly, realized the slowly function of falling of apron, avoid pressing the string instrument person finger because of carelessly turning down the apron to and the apron falls down and sends strong collision sound too fast, frightening the pleasing to the eye of people and influence piano. The utility model discloses under the effect of rubber pad, realized that the flexible lid of apron and piano panel closes, the lid closes sound minimum, can not appear the paint damage of apron and piano panel, effectively protects apron and piano panel to break away from current apron and the rigid lid of piano panel and close, cause apron and the damage of piano panel contact surface paint, the lid closes the big problem of sound. Therefore, the utility model discloses simple structure, convenient to use, low in manufacturing cost slowly falls effectually, safe and reliable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a schematic structural view of the descent control assembly of the present invention.

Fig. 4 is an assembly diagram of the cover plate and the rubber pad of the present invention.

Detailed Description

The following further describes the present invention with reference to the attached drawings, but the scope of the present invention is not limited thereto.

As shown in fig. 1 to 4, the slow descending device for the piano keyboard lid provided by the present embodiment comprises a slow descending assembly, a piano panel 1 and a cover plate 2; a groove is formed in the middle of the upper surface of the piano panel 1, a keyboard 8 is arranged in the groove, the cover plate 2 is rotatably connected with the piano panel 1 and used for covering the keyboard 8, and supporting legs 9 are arranged at four corners of the bottom of the piano panel 1; slow descending assemblies are symmetrically arranged on two sides of the piano panel 1, cavities 101 are symmetrically arranged on two sides of the piano panel 1, and the two cavities 101 are respectively positioned on two sides of the groove corresponding to the structure shown in fig. 1; the slow descending assembly comprises a lifting rod 4, a spring 7, a pressing plate 6 and a transmission part; the transmission part comprises a gear 5 and a power part; a first through hole and a second through hole are oppositely arranged on the piano panel 1 and are positioned above and below the cavity 101; the transmission part is arranged in the cavity 101; the top end of the lifting rod 4 is rotatably connected with the bottom of the cover plate 2; the lifting rod 4 sequentially penetrates through the first through hole and the cavity 101 on the piano panel 1 and then penetrates out of the second through hole; the lifting rod 4 is positioned in the cavity 101, and is sequentially provided with a rack 40 and an external thread section 41 from top to bottom; the gear 5 is meshed with the rack 40, and the gear 5 is connected with the power part; wherein the power part is connected with the inner wall of the cavity 101 through fasteners such as bolts and the like; the pressure plate 6 is provided with an internal threaded hole matched with the external threaded section 41, the pressure plate 6 is sleeved at the external threaded section 41 of the lifting rod 4, and the spring 7 is sleeved outside the lifting rod 4 between the pressure plate 6 and the lower part of the piano panel 1; and rubber pads 3 are arranged at two edges of the bottom of the cover plate 2.

In this embodiment, as shown in fig. 1, slow-lowering components are symmetrically arranged on both sides of a piano panel 1, and a slow-lowering function when a keyboard 8 is closed by a cover plate 2 is realized by the two slow-lowering components.

In this embodiment, piano panel 1, apron 2, keyboard 8 and landing leg 9 are the part that current piano includes, and this embodiment is mainly focused on and carries out institutional advancement on current piano basis, increases slowly to fall the subassembly, has realized the slowly function that falls of apron 2. The cover plate 2 is rotatably mounted on the piano panel 1 through a hinge assembly, which may be a hinge, or a hinge assembly including a hinge base and a hinge shaft, which is the prior art, and thus, redundant description is not repeated.

In this embodiment, the top end of the lifting rod 4 is rotatably mounted at the bottom of the cover plate 2 through a hinge assembly, and the hinge assembly includes a hinge seat and a hinge shaft, which is the prior art and therefore not described in detail.

In the present embodiment, the power unit is a motor, and the gear 5 is mounted on an output shaft of the motor; or the power part comprises a speed reducer and a motor connected with the speed reducer, and the gear 5 is arranged on an output shaft of the speed reducer, which is the prior art, so that redundant description is not repeated. The surface of the piano panel 1 is provided with a switch connected with the two motors, the switch supplies power through a plug outside a power line and a socket, and then the switch is pressed down to start the two motors, so that the two buffer assemblies are driven to act simultaneously to drive the cover plate 2 to slowly descend.

This embodiment has realized the slow function of falling of apron 2 under the effect of slowly falling the subassembly, avoids pressing the finger of the person playing the musical instrument because of turning down apron 2 carelessly to and apron 2 drops down too fast and sends strong collision sound, frightens the people and influences the pleasing to the eye of piano. Specifically, as shown in fig. 3, the power portion drives the gear 5 to rotate, the gear 5 drives the lifting rod 4 to descend, so as to drive the cover plate 2 to descend, the pressing plate 6 compresses the spring 7, and the spring 7 plays a role in buffering, so as to prevent the lifting rod 4 from descending too fast. Simultaneously, the distance between the pressing plate 6 and the lower side of the piano panel 1 is adjusted to adjust the compression amount of the spring 7, so that the buffering force of the spring 7 is adjusted, the buffering descending speed of the cover plate 2 is adjusted, and the piano plate is flexible and convenient to use. Because whole weight such as apron 2, lifter 4, drive division, clamp plate 6 is heavy, therefore lifter 4 descends the in-process, and 6 compression of spring produced bounce can not prevent lifter 4 to descend, only plays the cushioning effect, prevents that lifter 4 from descending too fast.

This embodiment has realized that apron 2 and piano panel 1's flexible lid closes under the effect of rubber pad 3, and it is minimum to cover to close sound, can not appear the paint damage on apron 2 and the piano panel 1, effectively protects apron 2 and piano panel 1 to having broken away from current apron 2 and piano panel 1 rigid lid and closing, having caused apron 2 and piano panel 1 contact surface paint to damage, the problem that the lid closes sound is big. Therefore, the embodiment has the advantages of simple structure, convenient use, low manufacturing cost, good slow descending effect, safety and reliability.

In the present embodiment, as shown in fig. 4, a counterbore and a bolt hole communicated with the counterbore are formed in the rubber pad 3, and a threaded blind hole is formed at the bottom of the cover plate 2; the screw 12 sequentially penetrates through the counter bore and the bolt hole and then is in threaded connection with the threaded blind hole; the screw head of the screw 12 sinks in the counter bore, so that the cover plate 2 and the rubber pad 3 can be detachably mounted, and the mounting and dismounting are simple and convenient. Preferably, the screw 12 is a socket head cap screw to facilitate the assembly and disassembly of the screw 12.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A slow descending device for a piano keyboard cover is characterized by comprising a slow descending assembly, a piano panel and a cover plate; a groove is formed in the middle of the upper surface of the piano panel, a keyboard is arranged in the groove, and the cover plate is rotatably connected with the piano panel and used for covering the keyboard; slow descending assemblies are symmetrically arranged on two sides of the piano panel, and cavities are symmetrically arranged on two sides of the piano panel; the slow descending assembly comprises a lifting rod, a spring, a pressing plate and a transmission part; the transmission part comprises a gear and a power part; the piano panel is provided with a first through hole and a second through hole which are opposite to each other; the transmission part is arranged in the cavity; the top end of the lifting rod is rotatably connected with the bottom of the cover plate; the lifting rod sequentially penetrates through the first through hole and the cavity on the piano panel and then penetrates out of the second through hole; the lifting rod is positioned in the cavity and is sequentially provided with a rack and an external thread section from top to bottom; the gear is meshed with the rack and is connected with the power part; the pressure plate is provided with an internal thread hole matched with the external thread section, the pressure plate is sleeved at the external thread section of the lifting rod, and a spring is sleeved outside the lifting rod between the pressure plate and the lower part of the piano panel; rubber pads are arranged at two edges of the bottom of the cover plate.

2. The descent control device for a piano keyboard lid according to claim 1, wherein the power part is a motor, and the gear is mounted on an output shaft of the motor; or the power part comprises a speed reducer and a motor connected with the speed reducer, and the gear is arranged on an output shaft of the speed reducer.

3. The descent control device for the piano keyboard lid according to claim 1, wherein the rubber pad is provided with a counter bore and a bolt hole communicated with the counter bore, and a threaded blind hole is provided corresponding to the bottom of the cover plate; the screw penetrates through the counter bore and the bolt hole in sequence and then is in threaded connection with the threaded blind hole; the screw head of the screw sinks in the counter bore.

4. A piano keyboard cover slow-lowering device according to claim 3, wherein the screw is a socket head cap screw.