Supporting hinge for piano

Abstract

The utility model discloses a support hinge for a piano. The support hinge is characterized by comprising a first hinge sheet (1) and a second hinge sheet (2) which are fixed on a music stand (10), and a third hinge sheet (3) which is fixed on a music stand bottom plate (11), the support hinge has two states: in the initial state of the music stand (10), the first hinge sheet (1), the second hinge sheet (2) and the third hinge sheet (3) are unfolded and laid flat; when the music stand (10) is in an open state, the first hinge piece (1), the second hinge piece (2) and the third hinge piece (3) form a triangle and are positioned in the triangular structure. According to the supporting hinge, a supporting rod structure is omitted, and the supporting structure of the music stand is mounted on the hinge, so that the music stand is simple in structure, the mounting space is saved, and the integrity of the piano can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of piano accessories, and specifically relates to a support hinge for a piano. Background Art

[0002] Generally, a music stand is arranged on a piano, which is mainly used to place sheet music so that the performer can play while looking at the sheet music. The music stand has two states. When not opened, it is in a flat state, and when opened, it is in an erected state, which is convenient for looking at the music score during performance. The connection mode of the music stand mainly relies on the hinge at the bottom to connect with the bottom plate, and is positioned by the support rod on the back when erected.

[0003] Currently, there is a disclosed improved piano music stand, which includes: a music score board, a magnetic board, a bottom plate, a support rod and a magnetic fixture; wherein the magnetic board is arranged on the surface of the music score board, the bottom end of the music score board is connected to the bottom plate through a rotating shaft, the support rod is connected to the top ends on both sides of the music score board through a rotating shaft, a card slot is arranged on the bottom plate, and the bottom of the support rod is clamped into the card slot, and the magnetic fixture clamps the sheet music and generates a magnetic attraction force with the magnetic board. The support rod includes two support vertical rods and a support cross rod connecting the two support vertical rods, forming a concave character structure with a single-side opening. The two support vertical rods are respectively symmetrically connected to both side edges of the music score board through rotating shafts, and the support cross rod is clamped in different card slots. The music stand with the above structure has the following two disadvantages: 1. Structural complexity: An additional support rod needs to be arranged, which increases the complexity and manufacturing cost of the music stand. The addition of the support rod not only involves more parts and assembly steps, but also may affect the portability and usability of the music stand. 2. Occupying space and affecting the integrity of the piano: When placed flat and retracted, the support rod and other additional components may protrude or occupy additional space, which not only affects the overall appearance of the piano, but also may cause inconvenience when storing or transporting the piano. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a support hinge for a piano, which cancels the support rod structure and installs the support structure of the music stand on the hinge, so that the structure of the music stand is simple, the installation space is saved, and the integrity of the piano can be ensured.

[0005] The technical solution of the present utility model is to provide a support hinge for a piano with the following structure, including a first hinge piece fixed to the music stand, a second hinge piece, and a third hinge piece fixed to the bottom plate of the music stand; one end of the first hinge piece is provided with a first hinge sleeve; one end of the second hinge piece is provided with a second hinge sleeve and a third hinge sleeve; one end of the third hinge piece is provided with a fourth hinge sleeve; the first hinge sleeve and the second hinge sleeve are coaxial and are hinged by a first hinge shaft, the fourth hinge sleeve and the third hinge sleeve are coaxial and are hinged by a second hinge shaft, and the support hinge includes two states: in the initial state of the music stand, the first hinge piece, the second hinge piece, and the third hinge piece are unfolded and laid flat; in the opened state of the music stand, the first hinge piece, the second hinge piece, and the third hinge piece form a triangle and are positioned in this triangular structure.

[0006] The first hinge piece, the second hinge piece, and the third hinge piece form a triangle on the back surface of the music stand and the top surface of the bottom plate of the music stand.

[0007] One end of the third hinge piece is provided with a first positioning end, and one end of the first hinge piece is provided with a supporting end. In the opened state of the music stand, the supporting end abuts against the first positioning end to achieve positioning.

[0008] The first positioning end is an inclined plate formed by bending upward along the body of the third hinge piece.

[0009] The first positioning end forms an included angle with the body of the third hinge piece, and the supporting end abuts against the inner side of the included angle.

[0010] The free end of the first hinge piece is provided with a second positioning end, and the second positioning end protrudes from the body of the second hinge piece. In the opened state of the music stand, the second positioning end abuts against the top of the first hinge piece, thereby positioning the included angle between the second hinge piece and the first hinge piece.

[0011] There are two second positioning ends and they are located on both sides of the first hinge sleeve.

[0012] There is a groove between the second positioning end and the first hinge sleeve, and the second positioning end is formed by stamping and bending the first hinge piece.

[0013] After adopting the above structure, the utility model has the following advantages: Canceling the support rod structure and adopting the hinge support design can effectively simplify the structure of the music stand and improve its operation simplicity. Integrating the support structure of the music stand onto the hinge. This design forms a triangular structure by connecting hinge plates, and utilizes the stability principle of the triangle to support the music stand. Composition of the hinge plates: The first hinge plate, the second hinge plate, and the third hinge plate together form a stable triangular structure. When the music stand is opened, these hinge plates will swing accordingly and automatically form a support structure to ensure that the music stand can stand firmly. Operation simplicity: When closing the music stand, only conventional operations are required to complete, without the need for additional actions to disassemble or adjust the support rod. This design simplifies the opening and closing process of the music stand, making the operation simpler and faster. Space saving: After canceling the support rod structure, the music stand is more compact when retracted, does not occupy extra space, and maintains the integrity of the piano. Stability and support effect: The triangular structure formed by the hinge provides sufficient support force to ensure that the music stand can stably maintain the required tilt angle during use without shaking or falling down. This design not only simplifies the structure of the music stand, but also improves its operation convenience and stability

[0014] As an improvement, the first hinge plate, the second hinge plate, and the third hinge plate form a triangle located on the back surface of the music stand and the top surface of the music stand bottom plate. When the music stand is opened, the hinge is hidden on the back surface of the music stand, which also helps to prevent the user from accidentally touching the hinge during use and improves safety.

[0015] One end of the third hinge plate is provided with a first positioning end, and one end of the first hinge plate is provided with a support end. In the opened state of the music stand, the support end abuts against the first positioning end to achieve positioning, and the hinge plate body is used for support, making the structure simple.

[0016] The first positioning end is an inclined plate formed by bending upward along the third hinge plate body and is integrally formed.

[0017] The first positioning end and the body of the third hinge plate form an included angle, and the support end abuts against the inner side of the included angle, with good positioning effect and can avoid accidental sliding.

[0018] The free end of the first hinge plate is provided with a second positioning end, and the second positioning end protrudes from the second hinge plate body. In the opened state of the music stand, the second positioning end abuts against the top of the first hinge plate, thereby positioning the included angle between the second hinge plate and the first hinge plate.

[0019] There are two second positioning ends and they are located on both sides of the second hinge sleeve. By adopting two positioning points, the positioning effect is more stable.

[0020] There is a groove between the second positioning end and the second hinge sleeve. The second positioning end is formed by stamping and bending the first hinge piece and processed by using the hinge body, which can reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Fig. is a perspective view of the installation of the support hinge for a piano according to the present invention.

[0022] Figure 2 Fig. is an exploded view of the support hinge for a piano according to the present invention.

[0023] Figure 3 Fig. is a schematic view of the flat state of the support hinge for a piano according to the present invention.

[0024] Figure 4 Fig. is a left view of the installation of the support hinge for a piano according to the present invention.

[0025] Figure 5 Fig. is a perspective view of the use state of the support hinge for a piano according to the present invention

[0026] Figure 6 Fig. is a perspective view of another angle of the use state of the support hinge for a piano according to the present invention

[0027] As shown in the figure:

[0028] 1. First hinge piece, 2. Second hinge piece, 3. Third hinge piece, 4. First hinge sleeve, 5. Second hinge sleeve, 6. Third hinge sleeve, 7. Fourth hinge sleeve, 8. First hinge shaft, 9. Second hinge shaft, 10. Music stand, 11. Music stand bottom plate, 12. First positioning end, 13. Support end, 14. Second positioning end, 15. Groove. DETAILED DESCRIPTION OF THE INVENTION

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] As Figure 1-6 shown, a support hinge for a piano according to the present invention includes a first hinge piece 1, a second hinge piece 2 fixed to the music stand 10, and a third hinge piece 3 fixed to the music stand bottom plate 11.

[0031] As Figure 2 shown, one end of the first hinge piece 1 is provided with a first hinge sleeve 4; there is a notch in the middle of the first hinge sleeve 4.

[0032] One end of the second hinge piece 2 is provided with a second hinge sleeve 5 and a third hinge sleeve 6; the second hinge sleeve 5 and the third hinge sleeve 6 are single structures and are located in the middle. One end of the third hinge piece 3 is provided with a fourth hinge sleeve 7, and the fourth hinge sleeve 7 is also provided with a notch. The first hinge sleeve 4 and the second hinge sleeve 5 are coaxial. The second hinge sleeve 5 is embedded in the middle notch of the first hinge sleeve 4 and is hinged through a first hinge shaft 8. The fourth hinge sleeve 7 and the third hinge sleeve 6 are coaxial. The third hinge sleeve 6 is embedded in the notch of the fourth hinge sleeve 7 and is hinged through a second hinge shaft 9.

[0033] The support hinge includes two states: As Figure 3 shown, in the initial state of the music stand 10, the first hinge piece 1, the second hinge piece 2 and the third hinge piece 3 are unfolded and laid flat; at this time, the first hinge piece 1, the second hinge piece 2 and the third hinge piece 3 are roughly in a planar state, and the music stand 10 is also laid flat on the bottom plate.

[0034] As Figure 2 and Figure 4 shown, in the open state of the music stand 10, the first hinge piece 1, the second hinge piece 2 and the third hinge piece 3 form a triangle and are positioned in this triangular structure.

[0035] As Figure 5 and Figure 6 shown, the first hinge piece 1, the second hinge piece 2 and the third hinge piece 3 form a triangle on the back surface of the music stand 10 and the top surface of the music stand bottom plate 11, making use of the stability characteristics of the triangle to ensure that the music stand can be stably supported when opened.

[0036] As Figure 3 and Figure 6 shown, one end of the third hinge piece 3 is provided with a first positioning end 12, and one end of the first hinge piece 1 is provided with a support end 13. In the open state of the music stand 10, the support end 13 abuts against the first positioning end 12 to achieve positioning. The first positioning end 12 is an inclined plate formed by bending upward along the body of the third hinge piece 3. The width of this plate is smaller than the width of the body of the third hinge piece 3, and the upward bending angle is about 120 degrees.

[0037] The first positioning end 12 and the body of the third hinge piece 3 form an included angle. In this embodiment, the angle is about 120°, and the support end 13 abuts against the inner side of the included angle.

[0038] The free end of the first hinge piece 1 is provided with a second positioning end 14. The second positioning end 14 protrudes from the body of the second hinge piece 2. In the open state of the music stand 10, the second positioning end 14 abuts against the top of the first hinge piece 1, thereby positioning the included angle between the second hinge piece 2 and the first hinge piece 1.

[0039] AsFigure 5 As shown, there are two second positioning ends 14, which are located on both sides of the second hinge sleeve 5. There is a spacing between the two to facilitate the bending of the second positioning end 14. Specifically, there is a groove 15 between the second positioning end 14 and the second hinge sleeve 5. The second positioning end 14 is formed by stamping and bending the first hinge piece 1, and after bending, it protrudes from the surface of the body of the second hinge sleeve 5.

Claims

1. A support hinge for a piano, characterized in that: The present invention comprises a first hinge piece (1) fixed to a music stand (10), a second hinge piece (2) and a third hinge piece (3) fixed to a bottom plate (11) of the music stand; one end of the first hinge piece (1) is provided with a first hinge sleeve (4); one end of the second hinge piece (2) is provided with a second hinge sleeve (5) and a third hinge sleeve (6); one end of the third hinge piece (3) is provided with a fourth hinge sleeve (7); the first hinge sleeve (4) is coaxial with the second hinge sleeve (5) and is connected to the third hinge sleeve (6) by a first hinge sleeve. The support hinge is hinged to a chain shaft (8), the fourth hinge sleeve (7) is coaxial with the third hinge sleeve (6) and is hinged through a second hinge shaft (9), and the support hinge includes two states: in the initial state of the music stand (10), the first hinge piece (1), the second hinge piece (2) and the third hinge piece (3) are unfolded and laid flat; in the open state of the music stand (10), the first hinge piece (1), the second hinge piece (2) and the third hinge piece (3) form a triangle and are positioned in the triangle structure.

2. A support hinge for a piano according to claim 1, characterized in that: The first hinge piece (1), the second hinge piece (2) and the third hinge piece (3) form a triangle located on the back surface of the music stand (10) and the top surface of the music stand bottom plate (11).

3. A support hinge for a piano according to claim 1 or 2, characterized in that: One end of the third hinge piece (3) is provided with a first positioning end (12), and one end of the first hinge piece (1) is provided with a supporting end (13). When the music stand (10) is in an open state, the supporting end (13) abuts against the first positioning end (12) to achieve positioning.

4. A support hinge for a piano according to claim 3, characterized in that: The first positioning end (12) is an inclined plate formed by bending upward along the body of the third hinge piece (3).

5. A support hinge for a piano according to claim 4, characterized in that: The first positioning end (12) forms an angle with the body of the third hinge piece (3), and the supporting end (13) abuts against the inner side of the angle.

6. A support hinge for a piano according to claim 1, characterized in that: The free end of the first hinge piece (1) is provided with a second positioning end (14), the second positioning end (14) protrudes from the second hinge piece (2) body, and when the music stand (10) is in an open state, the second positioning end (14) abuts against the top of the first hinge piece (1), thereby positioning the angle between the second hinge piece (2) and the first hinge piece (1).

7. A support hinge for a piano according to claim 6, characterized in that: There are two second positioning ends (14) located on both sides of the second hinge sleeve (5).

8. A support hinge for a piano according to claim 6 or 7, characterized in that: A groove (15) is provided between the second positioning end (14) and the second hinge sleeve (5), and the second positioning end (14) is formed by stamping and bending the first hinge piece (1).

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