CN218585619U - Vertical piano central disk with soundboard - Google Patents

Abstract

The utility model provides a vertical piano center plate with a soundboard, which comprises a front cross beam, a rear cross beam, an edge longitudinal beam, a middle longitudinal beam and a soundboard, wherein the front cross beam, the rear cross beam, the edge longitudinal beam, the middle longitudinal beam and the soundboard are spliced through mortise and tenon joints and are glued and reinforced; the utility model discloses a by the front beam, the rear end rail, the side longeron, a combination formula mesodial that middle longeron and soundboard mortise-tenon joint and glueing reinforcement constitute, the soundboard sets up the intermediate position department at the mesodial, press the key when playing the piano, the kinetic energy of production loops through the key-bar, the string is strikeed to the hammer to the string that hits, the string passes through the bridge drive soundboard vibration with certain frequency vibration, the compressed air ripples of soundboard vibration forms sound and passes to the people's ear, the compressed air ripples also reflects the mesodial soundboard simultaneously, it produces resonance to drive the soundboard, the compressed air ripples that the soundboard produced forms sound and also passes to the people's ear. The resonance effect is richer when the piano is played.

Description

Vertical piano central disk with soundboard

Technical Field

The utility model relates to a piano accessory especially relates to an upright piano center disk with soundboard.

Background

The piano center plate is a carrier for loading piano keys and is positioned below the piano keys, the service life of the piano is determined by the center plate, the keys are erected on the center plate, so the service life of the positions of the keys is closely related to that of the center plate, and the traditional piano center plate is made of solid wood and is connected with an iron plate and a piano shell to play roles in supporting the keys and a string striking machine. But do not have resonance function and effect, consequently the utility model provides an upright piano center disk with soundboard is in order to solve the problem that exists among the prior art.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an upright piano center plate with soundboard does not have the resonance function in order to solve among the prior art piano center plate, can't send the sympathetic response, the single problem of tone quality.

For realizing the purpose of the utility model, the utility model discloses a following technical scheme realizes: the utility model provides a vertical piano center pan with soundboard, includes front beam, back crossbeam, limit longeron, middle longeron and soundboard, peg graft through the tenon fourth of the twelve earthly branches between front beam, back crossbeam, limit longeron, middle longeron and the soundboard to the glueing is consolidated.

The further improvement lies in that: the length of front beam and back beam is unanimous and the key of adaptation piano, the width of front beam is less than back beam width.

The further improvement lies in that: the inner side surface of the side longitudinal beam and the two sides of the middle longitudinal beam are provided with inserting openings, and the two ends of the sound board are connected with the side longitudinal beam and the middle longitudinal beam through the inserting openings after being coated with glue.

The further improvement lies in that: the two ends of the side longitudinal beam and the middle longitudinal beam are provided with tenons, the rear side of the front cross beam and the front side of the rear cross beam are equally spaced and provided with adaptation mortises of the tenons, and the side longitudinal beam and the middle longitudinal beam are connected with the front cross beam and the rear cross beam through mortise and tenon adaptive structures and are reinforced by applying glue.

The further improvement lies in that: the rear side of the front cross beam and the front side of the rear cross beam are also provided with sockets which are the same as the two sides of the middle longitudinal beam and are used for being matched with the side edges of the sound board, and the side edges of the sound board are also glued and reinforced between the front cross beam and the rear cross beam.

The further improvement is that: the front cross beam and the rear cross beam are formed by finger-joint three layers of hardwood woods in a symmetrical splicing manner.

The further improvement is that: the side longitudinal beams and the middle longitudinal beam are formed by single-layer splicing of hardwood woods.

The further improvement lies in that: the soundboard is composed of a single spruce board with the thickness of 8 mm.

The further improvement is that: and the front cross beam, the rear cross beam, the side longitudinal beams, the middle longitudinal beam and the sound board are spliced, and the rear surfaces of the front cross beam, the rear cross beam, the side longitudinal beams, the middle longitudinal beam and the sound board are coated with sealing paint.

The utility model has the advantages that:

the piano middle disc is a combined type middle disc formed by a front cross beam, a rear cross beam, side longitudinal beams, middle longitudinal beams and a sound board through mortise-tenon connection and glue application reinforcement, the sound board is arranged at the middle position of the middle disc, keys are pressed when the piano is played, generated kinetic energy is converted to a hammer through a key rod and a string beating machine system in sequence and is beaten to the piano, the string vibrates at a certain frequency and drives the sound board to vibrate through a bridge, compressed air waves generated by the vibration of the sound board form sound and are transmitted to human ears, the compressed air waves are reflected to the middle disc sound board at the same time and drive the sound board to resonate, and the compressed air waves generated by the sound board form sound and are also transmitted to the human ears. The resonance effect is richer when the piano is played.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 isbase:Sub>A sectional view of the utility model A-A.

Fig. 3 is a sectional view of the present invention taken along line B-B.

Fig. 4 is a schematic view of the installation position of the middle plate of the present invention.

Wherein: 1. a front cross member; 2. a rear cross member; 3. a side stringer; 4. a middle longitudinal beam; 41. a tenon; 42. mortises; 5. a soundboard; 6. keys of the keys; 7. a string hammer; 8. a string; 9. code bridging; 10. soundboards.

Detailed Description

In order to deepen the understanding of the present invention, the following embodiments are combined to further detail the present invention, and the present embodiment is only used to explain the present invention, and does not constitute the limitation of the protection scope of the present invention.

According to the illustrations of fig. 1-4, the present embodiment proposes a solution implementation: the utility model provides a vertical piano center pan with soundboard, includes front beam 1, back beam 2, side longeron 3, middle longeron 4 and soundboard 5, peg graft through the mortise and tenon joint between front beam 1, back beam 2, side longeron 3, middle longeron 4 and the soundboard 5 to the glueing is consolidated.

In this embodiment, the piano middle disc is a combined middle disc formed by connecting a front cross beam 1, a rear cross beam 2, side longitudinal beams 3, a middle longitudinal beam 4 and a soundboard 5 in a mortise-tenon manner, applying glue and reinforcing, the soundboard 5 is arranged at the middle position of the middle disc, when a piano is played, a key 6 is pressed, generated kinetic energy is converted to a hammer 7 through a key rod and a string striking machine system in sequence and is struck to a string 8, the string 8 vibrates at a certain frequency and drives a soundboard 10 to vibrate through a bridge 9, compressed air waves formed by vibration of the soundboard 10 form sound to be transmitted to human ears, the compressed air waves are reflected to the soundboard 5 of the middle disc at the same time to drive the soundboard 5 to resonate, and the compressed air waves formed by the soundboard 5 also transmit the sound to the human ears. The resonance effect is richer when the piano is played.

The length of front beam 1 is unanimous and the key of adaptation piano with back beam 2, the width of front beam 1 is less than the width of back beam 2.

In this embodiment, because the piano center is the carrier of loading the piano key, it is located the piano key's below, so the length of front beam 1 and back beam 2 must be with the key adaptation of piano, in fig. 1 front beam 1 is in the place ahead, then more closes to the player, back beam 2 is in the back, then compare in front beam 1 and keep away from the player more, because back beam 2 mainly acts on and bears the key position and can hold the assembly space, moreover the assembly demand of dish in oneself, so the more wide point that the width of back beam 2 relates to.

The inner side surface of the side longitudinal beam 3 and the two sides of the middle longitudinal beam 4 are provided with sockets, and the two ends of the sound board 5 are glued and then connected with the side longitudinal beam 3 and the middle longitudinal beam 4 through the sockets.

In this embodiment, the equipment of whole center sill is earlier carried out the equipment of longeron and soundboard 5, and soundboard 5 has a plurality of groups to be same inline on the lateral position, the resonance vocal music of production receives the vibration frequency influence, so on the center sill that the area is injectd, through the quantity of increase and decrease soundboard 5, the adjustment resonance frequency that the big small dimension of change soundboard 5 can be appropriate, thereby change the tone quality of resonance vocal music, specific quantity is how much, big small area can set up according to the demand by oneself.

The both ends of limit longeron 3 and middle longeron 4 are provided with tenon 41, the rear side of front beam 1 and the front side equidistance of rear beam 2 are provided with the adaptation the tongue-and-groove 42 of tenon 41, limit longeron 3 and middle longeron 4 are connected with front beam 1 and rear beam 2 through tenon fourth of the twelve earthly branches adaptation structure to glueing is consolidated.

Also be provided with the socket the same with 4 both sides of middle longeron on the rear side of front beam 1 and the front side position of rear beam 2, be used for the adaptation the side of soundboard 5, 5 sides of soundboard are inserted and are also glued between front beam 1 and rear beam 2 and reinforce.

The specific processing technology steps of the piano middle disc are as follows:

1. reserving processing allowance for the ingredients;

2. planing a reference surface of the discharged material, and thicknessing to obtain a net material size;

3. the tenon 41 and the socket of the side soundboard 5 are cut out from the side longitudinal beam 3 and the middle longitudinal beam 4;

4. cutting openings of the sound boards 5 on the front cross beam 1 and the rear cross beam 2, and punching mortises 42 of the side longitudinal beams 3 and the middle longitudinal beam 4;

5. two ends of the resonance plate 5 are coated with glue and inserted into the side longitudinal beam 3 and the middle longitudinal beam 4, and are firstly assembled with the side longitudinal beam 3 and the middle longitudinal beam 4;

6. the assembled intermediate body is provided with the middle part of the sound board 5, the tenons 41 of the side longitudinal beams 3 and the middle longitudinal beam 4 are all coated with glue, the side ends of the sound board 5 are coated with glue and are respectively inserted into the front cross beam 1 and the rear cross beam 2, the front cross beam and the rear cross beam are assembled together, and the middle part and the front cross beam are simultaneously flattened and tightly extruded by a plate splicing machine.

7. And after the glue is completely dried, taking down the glue to a sander to sand and level the upper surface and the lower surface, and cutting out the net size of the middle disc.

8. All the surfaces are coated with sealing paint.

Front beam 1 and rear beam 2 are formed by the concatenation of hardwood class timber finger joint three-layer symmetry, side longeron 3 and middle longeron 4 are formed by hardwood class timber individual layer concatenation, the soundboard 5 comprises the thick spruce veneer of 8 mm.

The assembled middle disc is pressed and squeezed by a plate splicing machine, so that gaps among the components can be greatly reduced, the compactness is improved, and the middle disc is smooth, firm and free of deformation after being shaped.

The surface of the spliced front cross beam 1, the spliced rear cross beam 2, the spliced side longitudinal beams 3, the spliced middle longitudinal beams 4 and the spliced soundboard 5 is coated with sealing paint.

The foregoing illustrates and describes the principles, general features, and advantages of the present 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 (9)

1. The utility model provides an upright piano midboard with soundboard which characterized in that: the concrete bridge structure is characterized by comprising a front cross beam (1), a rear cross beam (2), a side longitudinal beam (3), a middle longitudinal beam (4) and a soundboard (5), wherein the front cross beam (1), the rear cross beam (2), the side longitudinal beam (3), the middle longitudinal beam (4) and the soundboard (5) are spliced through mortise and tenon joints, and glue is applied for reinforcement.

2. An upright piano center with a soundboard according to claim 1, wherein: the piano keyboard is characterized in that the lengths of the front cross beam (1) and the rear cross beam (2) are consistent and are matched with keys of a piano, and the width of the front cross beam (1) is smaller than that of the rear cross beam (2).

3. The center of an upright piano with a soundboard according to claim 2, wherein: the inner side surface of the side longitudinal beam (3) and the two sides of the middle longitudinal beam (4) are provided with sockets, and the two ends of the sound board (5) are glued and then connected with the side longitudinal beam (3) and the middle longitudinal beam (4) through the sockets.

4. An upright piano center with a soundboard according to claim 3, wherein: the side longitudinal beam (3) and the middle longitudinal beam (4) are provided with tenons (41) at two ends, the rear side of the front cross beam (1) and the front side of the rear cross beam (2) are equally spaced and provided with adaptation mortises (42) of the tenons (41), the side longitudinal beam (3) and the middle longitudinal beam (4) are connected with the front cross beam (1) and the rear cross beam (2) through mortise and tenon adaptation structures, and glue is applied to reinforce.

5. The center of an upright piano with a soundboard according to claim 4, wherein: the rear side of front beam (1) and the front side position of back beam (2) also are provided with the socket the same with middle longeron (4) both sides, for the adaptation the side of soundboard (5), soundboard (5) side insert also the glueing reinforce between front beam (1) and back beam (2).

6. An upright piano center with soundboard according to claim 5, wherein: the front cross beam (1) and the rear cross beam (2) are formed by finger-joint three layers of hardwood wood and symmetrically spliced.

7. The center of an upright piano with a soundboard according to claim 6, wherein: the side longitudinal beams (3) and the middle longitudinal beam (4) are formed by splicing hardwood wood in a single layer mode.

8. The center of an upright piano with a soundboard according to claim 7, wherein: the soundboard (5) is composed of 8mm thick spruce single boards.

9. The center of an upright piano with a soundboard according to claim 7, wherein: the front cross beam (1), the rear cross beam (2), the side longitudinal beams (3), the middle longitudinal beam (4) and the sound board (5) are spliced, and the rear surfaces of the front cross beam, the rear cross beam, the side longitudinal beams and the middle longitudinal beam are coated with sealing paint.

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