CN209980757U - Piano top cover plate supporting tool with adjustable angle - Google Patents

Abstract

The utility model relates to a piano top cover plate supporting tool with adjustable angle, which comprises an upper supporting rod, a lower supporting rod and an adjusting sleeve for connecting the upper supporting rod and the lower supporting rod; a pair of support shafts which are symmetrically arranged is arranged on the side wall of the lower end of the upper support rod, and a fixed disc is arranged at the upper end part of the lower support rod; the side wall of the adjusting sleeve is provided with a pair of first cavity and second cavity which are centrosymmetric, the lower end surface of the first cavity is composed of a plurality of arc-shaped supporting surfaces with gradually decreasing heights, and the supporting shaft is erected on the arc-shaped supporting surfaces; the utility model is used for support the piano lamina tecti, realize the regulation of piano lamina tecti angle in certain angle range, through the rotation regulation sleeve pipe during the use, realize that the back shaft supports on the arc holding surface of co-altitude not to adjust the position of last bracing piece for adjusting sleeve pipe, and then realize the flexible of overall structure, and the regulation of piano lamina tecti angle.

Description

Piano top cover plate supporting tool with adjustable angle

Technical Field

The utility model relates to a musical instrument technical field, in particular to but angle of adjustment's piano lamina tecti supporting tool.

Background

A piano is a keyboard instrument, and hammers are pulled with keys to strike strings. Pianos are mainly classified into upright pianos and grand pianos, wherein the upright pianos are available in many households today, are in the family type and are convenient and fast, and are used as entertainment tools by people; grand pianos are pianos for large-scale performances or professionals, have top decks on their upper ends, and are adjusted to different angles according to different use places.

In 3 pits on the back side of the piano top cover, the longest support rod is used on the inner side, the middle support rod is used on the middle side, the shortest support rod is used on the outer side, if the pits are mistakenly matched, the danger that the support rods fall off from the pits and the top cover falls down can occur, so that a support device with a reasonable structure is required to be designed to support the pits; the utility model discloses an in 201120466070.8's utility model patent, mention a many opening strutting arrangement of piano top cap, fix the device through screwing up the locking cam after its angular adjustment is accomplished, but because the weight of a lot of piano top caps is heavier, consequently strict to the design requirement of locking cam, screw up simultaneously and also have very big requirement hard, otherwise under the action of gravity of top cap, the locking cam is very easy not hard up and causes coming off of top cap, consequently the utility model discloses an angle of adjustment's piano lamina tecti supporting tool has been developed to solve the problem that exists among the prior art, through the retrieval, not discover with the utility model discloses same or similar technical scheme.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the utility model provides an angle of adjustment's piano lamina tecti supporting tool to solve among the prior art to the high problem of the supporting tool design requirement that has locking device, simultaneously because also have very high requirement to locking device's locking hard among the prior art, can solve the problem that artificial locking is difficult to reach best locking state, and the problem that the long-time easy not hard up arouses the lamina tecti to drop under the state of high pressure.

The technical scheme of the utility model is that: a piano top cover plate supporting tool capable of adjusting angles comprises an upper supporting rod, a lower supporting rod and an adjusting sleeve for connecting the upper supporting rod and the lower supporting rod; a pair of support shafts which are symmetrically arranged is arranged on the side wall of the lower end of the upper support rod, and a fixed disc is arranged at the upper end part of the lower support rod; the adjustable sleeve is of a cylindrical structure with openings at the upper end and the lower end, the lower end of the side wall is provided with a chute for the fixed disc to be embedded and matched and rotate, the side wall of the adjustable sleeve at the upper end of the chute is provided with a pair of first cavity and second cavity which are centrosymmetric, the lower end surface of the first cavity is composed of a plurality of arc-shaped supporting surfaces with gradually decreasing heights, and the supporting shaft is erected on the arc-shaped supporting surfaces.

Preferably, a boss is arranged between the adjacent arc-shaped supporting surfaces, and the difference between the height of the upper end surface of the boss and the height of the lower end surface of the arc-shaped supporting surface is 2-5 mm.

Preferably, a sealed transparent plate is fixedly connected to the outside of the adjusting sleeve.

Preferably, the lower end part of the upper support rod and the upper end part of the lower support rod are both in a cylindrical structure, and the outer diameter of the upper support rod is the same as the inner diameter of the adjusting sleeve; the outer diameter of the fixed disc is the same as the inner diameter of the sliding chute.

Preferably, the upper end of the upper supporting rod is hemispherical, the middle part of the upper supporting rod is provided with a caulking groove, and the upper supporting rod is provided with a bolt penetrating through the caulking groove.

Compared with the prior art, the utility model has the advantages that:

(1) the utility model is used for support the piano lamina tecti, realize the regulation of piano lamina tecti angle in certain angle range, through the rotation regulation sleeve pipe during the use, realize that the back shaft supports on the arc holding surface of co-altitude not to adjust the position of last bracing piece for adjusting sleeve pipe, and then realize the flexible of overall structure, and the regulation of piano lamina tecti angle.

(2) A boss is arranged between the adjacent arc-shaped supporting surfaces, the design of the boss is that the supporting shaft erected on the arc-shaped supporting surfaces is limited, and the height of the boss cannot be too high so as to facilitate the rotation of the adjusting sleeve.

(3) The outside fixed connection of adjusting sleeve pipe is a sealed transparent plate, is convenient for hold and rotate adjusting sleeve pipe, is convenient for observe the position of back shaft simultaneously.

(4) The upper end part of the upper supporting rod is used for being supported on the top cover plate of the piano, so that a structure matched with the upper end part of the upper supporting rod is also arranged on the top cover plate of the piano; the design of bolt is in order to fix last bracing piece, and the adjusting sleeve pipe of being convenient for can realize the rotation of clockwise and anticlockwise two kinds of directions.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a front view of the upper support rod of the present invention;

fig. 3 is a schematic structural diagram of the adjusting sleeve of the present invention;

fig. 4 is a schematic view of a partial structure of the adjusting sleeve where the first cavity is located according to the present invention;

fig. 5 is a schematic view of a partial structure of the adjusting sleeve where the second cavity is located according to the present invention;

fig. 6 is a development view of the adjusting sleeve of the present invention.

Wherein: 1. an upper supporting rod 11, a caulking groove 12, a bolt 13 and a supporting shaft;

2. a lower support rod 21 and a fixed disc;

3. the adjusting sleeve 31, the first cavity 32, the second cavity 33, the arc-shaped supporting surface 34, the boss 35 and the sliding groove;

4. the transparent plate is sealed.

Detailed Description

The following detailed description is made in conjunction with specific embodiments of the present invention:

as shown in fig. 1, an angle-adjustable supporting tool for a piano top cover plate comprises an upper supporting rod 1, a lower supporting rod 2, and an adjusting sleeve 3 connecting the upper supporting rod 1 and the lower supporting rod 2, wherein the upper end of the upper supporting rod 1 is used for supporting on the piano top cover plate, so that the top cover plate of the piano also has a structure matched with the upper end of the upper supporting rod.

As shown in fig. 2, a pair of support shafts 13 symmetrically arranged are provided on the side wall of the lower end of the upper support rod 1, the upper end of the upper support rod 1 is hemispherical, the middle part of the upper support rod 1 is provided with a caulking groove 11, and a bolt 12 penetrating through the caulking groove 11 is provided, the caulking groove 11 is designed to position the upper support rod 1, the bolt 12 is designed to fix the upper support rod 1, so that the top cover plate of the piano also has a structure matched with the caulking groove 11 and a structure for the bolt 12 to penetrate and fix, and the structure of the top cover plate of the piano is not described in this embodiment; the upper end of the lower support rod 2 is provided with a fixed disc 21.

As shown in fig. 3, 4, 5 and 6, the adjusting sleeve 3 is a cylindrical structure with openings at the upper and lower ends, a sealing transparent plate 4 is fixedly connected to the outside, the inner diameter is the same as the outer diameters of the upper supporting rod 1 and the lower supporting rod 2, a sliding groove 35 for the fixing disc 21 to be embedded, matched and rotated is arranged at the lower end of the side wall, and the inner diameter of the sliding groove 35 is the same as the outer diameter of the fixing disc 21; a pair of first cavity 31 and second cavity 32 that are centrosymmetric are provided with on the adjusting sleeve 3 lateral wall of spout 35 upper end, the lower terminal surface of first cavity 31 comprises a plurality of height degressive arc holding surface 33 gradually, arc holding surface 33 has four altogether in this embodiment, back shaft 13 erects on arc holding surface 33, length along the axis direction is less than adjusting sleeve 3's wall thickness, a boss 34 has between the adjacent arc holding surface 33, the difference of the height of boss 34 up end and the height of arc holding 33 face lower extreme face is 3 mm.

Be provided with a plurality of supporting tool that support piano lamina tecti is different angles on the musical instrument case of piano, be 30, 45, 60 if piano lamina tecti angle, then need design three supporting tool, each supporting tool is used for supporting structurally at specific piano lamina tecti lower extreme rather than the complex, and only is the difference of length, the utility model discloses then set forth wherein arbitrary supporting tool's specific structure, but the angle of adjustment of simultaneous design only is the undulant angle regulation around at above-mentioned three angle.

In the embodiment, a piano top cover plate is at 45 degrees as an example, four arc-shaped supporting surfaces are respectively numbered as a, b, c and d from high to low, when the supporting shafts are supported on the b, the inclination angle of the piano top cover plate is 45 degrees, when the piano top cover plate is used, the upper ends of the upper supporting rods 1 are abutted against the piano top cover plate and are fixed by the bolts 12, when the angle needs to be adjusted, the adjusting sleeve 3 is rotated clockwise, at the moment, the piano top cover plate is slightly lifted by hands, so that the supporting shafts 13 can pass over the bosses 34 to enter the next arc-shaped supporting surface 33; when the angle needs to be increased, the adjusting sleeve 3 needs to rotate anticlockwise, at the moment, due to the design of the structure of the first cavity 31, the piano top cover plate needs to be lifted forcefully, the supporting shaft 13 is moved to the uppermost end of the first cavity 31, the adjusting sleeve 3 can be rotated anticlockwise, and when the piano top cover plate is put down again, the supporting shaft 13 can be supported on the corresponding arc-shaped supporting surface 33.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and therefore, the present invention is considered to be exemplary and not restrictive in any way, since the scope of the present invention is defined by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and therefore any reference signs in the claims are not intended to be construed as limiting the claims concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.

Claims (5)

1. The utility model provides an angle of adjustment's piano lamina tecti supporting tool which characterized in that: comprises an upper supporting rod, a lower supporting rod and an adjusting sleeve for connecting the upper supporting rod and the lower supporting rod; a pair of support shafts which are symmetrically arranged is arranged on the side wall of the lower end of the upper support rod, and a fixed disc is arranged at the upper end part of the lower support rod; the adjustable sleeve is of a cylindrical structure with openings at the upper end and the lower end, the lower end of the side wall is provided with a chute for the fixed disc to be embedded and matched and rotate, the side wall of the adjustable sleeve at the upper end of the chute is provided with a pair of first cavity and second cavity which are centrosymmetric, the lower end surface of the first cavity is composed of a plurality of arc-shaped supporting surfaces with gradually decreasing heights, and the supporting shaft is erected on the arc-shaped supporting surfaces.

2. The adjustable angle piano top cover plate supporting tool according to claim 1, wherein: a boss is arranged between the adjacent arc-shaped supporting surfaces, and the difference between the height of the upper end surface of the boss and the height of the lower end surface of the arc-shaped supporting surface is 2-5 mm.

3. The adjustable angle piano top cover plate supporting tool according to claim 1, wherein: and a sealed transparent plate is fixedly connected to the outside of the adjusting sleeve.

4. The adjustable angle piano top cover plate supporting tool according to claim 1, wherein: the lower end part of the upper support rod and the upper end part of the lower support rod are both in cylindrical structures, and the outer diameter of the upper support rod is the same as the inner diameter of the adjusting sleeve; the outer diameter of the fixed disc is the same as the inner diameter of the sliding chute.

5. The adjustable angle piano top cover plate supporting tool according to claim 1, wherein: the upper end part of the upper supporting rod is hemispherical, the middle part of the upper supporting rod is provided with a caulking groove, and the upper supporting rod is provided with a bolt penetrating through the caulking groove.

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