KR100768483B1 - A music stand combine device of digital piano - Google Patents

Abstract

A keyboard coupling device of a digital piano is provided to install a frame supporting bracket horizontally in the lower portion of a keyboard supporting frame which fixedly supports a keyboard, curve a support member at both upper sides of the supporting frame, and install a substrate supporting bracket including a central portion having a curved supporting member, thereby preventing the deformation caused by a shock by using a frame supporting bracket while horizontally supporting the keyboard supporting frame. A frame supporting bracket(200) is horizontally installed in the lower side of a key board supporting frame(110) fixedly supporting a keyboard. A curved part(210) having a U shape at one side of the frame supporting bracket(200) is formed, and is coupled to one end of the keyboard supporting frame(110) by using a screw(220). A plurality of grooves(230) for buffering is horizontally provided in the lower portion of the frame supporting bracket(200). A supporting member is curved in the upper portion of the keyboard supporting frame(110). A substrate supporting member which is coupled to the bottom surface of the printed circuit board is curved and fixedly coupled to a substrate supporting bracket. Grooves are formed at both sides of the substrate supporting bracket and another groove is horizontally formed in the lower portion of the substrate supporting bracket.

Description

A music stand combine device of digital piano

1 is a front sectional structural view showing the keyboard support of a conventional digital piano.

FIG. 2 is a cross sectional structural view of a keyboard support frame for supporting the piano keys of FIG. 1; FIG.

Figure 3 is a front sectional structure diagram of the keyboard support for supporting and fixing the keyboard of the digital piano according to the present invention.

Figure 4 is a main cross-sectional structure of the main portion engaged state of the frame support bracket installed below the keyboard support frame of the present invention.

Figure 5 is a schematic perspective view of a substrate support bracket for fixing the printed circuit board of the present invention.

Explanation of symbols on the main parts of the drawings

110.Support frame 120.Hinge section

130 ... key 131 ... press

132 ... projection 140 ... spring

150 ... screw 160 ... printed circuit board

161 Contact switch 170 Hinge

180 Hammer 181

182 ... weight 190 ... U-shaped bracket

191 ... Support 192 ... Rubber Strip

200 ... Frame Support Bracket 210 ...

220 ... screw 230 ... buffer groove

240 ... support 250 ... substrate support

260 ... screw 270 ... substrate support bracket

271 ... cut groove 272 ... buffer long groove

The present invention relates to a piano keyboard coupling device that prevents deformation of a printed circuit board due to a distortion of a keyboard frame that supports and fixes a keyboard of a digital piano, and thus maintains a constant tone at all times. The frame support bracket is horizontally laid below the keyboard frame, and the support piece is bent to both sides at the upper portion of the frame support bracket, and a substrate support bracket is formed at the center to support and fix the key. While maintaining the horizontal, it is possible to prevent the deformation caused by the impact through the frame support bracket, as well as the impact on the support frame and the impact of the printed circuit board generated by the keyboard deformation of the substrate support bracket Through the prevention and accordingly It will always support device on the keyboard of a digital piano to maintain a consistent tone.

In general, a keyboard of a digital piano is provided so that the keyboard can be rotated up and down via a hinge part and a rubber spring to one side of the upper part of the keyboard support frame, and a pressing part for pressing a contact switch of a printed circuit board is integrated inside the keyboard. It is installed downward, the pressing portion of the inside of the key by the operation of pressing the key is touched by the contact switch of the printed circuit board to generate a sound, at this time the pressing portion downwardly protruding in the center of the key presses the end of the hammer Raise or lower to create a unique piano sound effect.

The keyboard of the digital piano related to this technique is known from Korean Patent No. 10-0391708.

1 and 2, the technical configuration is such that the keyboard 30 can be rotated up and down through the hinge portion 20 and the rubber spring 40 toward the upper side of the key support frame 10. As shown in FIGS. The pressing part 31 is installed in the inside of the keyboard 30 so as to be quenched with the contact switch 61 of the printed circuit board 60 fixed as the screw 50 on the support frame 10. It is installed so as to, in this case, the projection portion 32 protruding downward in the center of the keyboard 30 is to be in contact with the end portion 81 of the hammer 80, the hinge portion 70 is installed on one side to rotate a certain angle up and down The U-shaped bracket 90 is integrally spoken at one end of the support frame 10, and the rubber strips 92 are provided at both upper and lower sides and lower sides of the U-shaped bracket 90 via upper and lower supports 91. ) Is installed in each of the configuration, which is in contact with the other weight portion 82 of the hammer 80 elastically It is broken.

Therefore, when the keyboard 30 is pressed for the performance of the digital piano, the keyboard 30 descending through the hinge portion 20 provided on one side of the support frame 10 is the pressing portion 31 therein. Is lowered integrally to press the contact switch 61 of the printed circuit board 60 to generate a sound, wherein the protrusion 32 is projected downward in the center of the keyboard 30 instantaneous contact with the end of the hammer 80 While sliding, they form a unique piano tone.

In addition, in order to improve the feeling of running through the key to the finger (彈奏 感), in order to soften the sense of touch due to the lifting and lowering of the hammer 80, the U-shaped bracket at one end of the support frame 10 After the 90 is formed, the rubber strips 92 are respectively mounted on the upper and lower sides and the lower side via the L-shaped support 91 on the upper both sides thereof.

However, in the keyboard of the conventional digital piano as described above, the piano keyboard 30 is fixed as the support frame 10 and the hinge portion 20, and printing which generates a tone by pressing the keyboard 30 is performed. Since the circuit board 60 is fixed to the support frame 10 as a screw 50 simply, the support frame 10 coupled with the piano main body (not shown) may be easily deformed by an external impact or the like. Of course, due to the deformation of the support frame 10, the printed circuit board 60 fixed thereto is also easily distorted, which makes it difficult to generate a piano-specific sound.

Particularly, when the piano keyboard 30 is pressed strongly, the pressing part 31 is pressed down and the printed circuit board 60 fixed to the support frame 10 is pressed down strongly to be transmitted to the printed circuit board 60. The deformation caused by the impact force, there was a lot of problems, such as unable to perform the piano performance properly.

The present invention has been made in order to improve the conventional problems as described above, the object is to roll the frame support bracket to the lower side of the support frame for holding the keyboard, the support piece is formed on both sides of the upper side of the frame support bracket By providing a substrate support bracket in which the substrate support piece is bent in the center, while maintaining the horizontality of the keyboard support frame for holding and holding the keyboard, it is possible to prevent deformation caused by external impact through the frame support bracket. To provide a keyboard support device for a digital piano that can prevent the shock applied to the support frame and the impact of the printed circuit board caused by the keyboard in advance through the substrate support bracket, thereby maintaining a constant tone at all times. Is in.

As a technical means for achieving the above object, the present invention, the keyboard is installed to be rotated up and down through the hinge portion and the spring to one side of the upper portion of the keyboard support frame, the pressing portion is installed in the inside of the keyboard downward A contact switch of a printed circuit board fixed as a screw on the support frame is installed to be capable of being quenched. At this time, the downwardly protruding portion in the center of the keyboard contacts the end of the hammer in which a hinge part is installed at one side and rotates at a predetermined angle up and down. The U-shaped bracket is integrally addressed to one end of the support frame, and rubber strips are installed on both upper and lower sides and lower sides of the U-shaped bracket through upper and lower sides of the U-shaped bracket, respectively, so as to be elastic with the other weight portion of the hammer. In the keyboard fixing structure of the digital piano that is in contact with,

A frame support bracket is laid out below the support frame for holding and supporting the keyboard, and a c-shaped bent portion is formed at one side of the frame support bracket, and is fixedly coupled to one end of the key support frame as a screw, A plurality of buffer grooves are horizontally laid at the bottom, and a support piece is bent to both sides at an upper portion of the support frame for supporting the keyboard, and a substrate support piece coupled to the bottom of the printed circuit board at the center is bent and fixed as a screw. By providing a keyboard support device for a digital piano, characterized in that consisting of.

In addition, the present invention is characterized in that the substrate support bracket is notched grooves on both sides and the buffer long grooves on the lower side.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a front sectional structural view of the keyboard support for supporting and fixing the keyboard of the digital piano according to the present invention, Figure 4 is a front sectional structural view of the main portion coupled state of the frame support bracket installed below the keyboard support frame of the present invention, 5 is a schematic perspective view of a substrate support bracket for supporting and fixing a printed circuit board of the present invention, wherein the keyboard 130 is vertically up and down at an upper portion of the keyboard support frame 110 through the hinge 120 and the spring 140. The contact switch 161 of the printed circuit board 160 is rotatably installed, and the pressing part 131 is recessed downward in the keyboard 130 and fixed as the screw 150 on the support frame 110. And installed so as to be quenched, at this time, the protrusion 132 protruding downward in the center of the keyboard 130 is the end portion 181 of the hammer 180, the hinge portion 170 is installed on one side and rotates a predetermined angle up and down; To make contact The U-shaped bracket 190 is integrally spoken at one end of the support frame 110, and the rubber strips 192 are provided at both upper and lower sides and lower sides of the U-shaped bracket 190 through the support 191. These are each installed, it is installed to elastically contact the other weight portion 182 of the hammer 180.

In addition, the frame support bracket 200 is rolled down to the lower side of the support frame 110 for supporting and fixing the keyboard 130, the c-shaped bent portion 210 is formed on one side of the frame support bracket 200, One end portion of the keyboard support frame 110 is fixedly coupled as a screw 220, a plurality of buffer grooves 230 are laid on the bottom of the frame support bracket 200, the support frame for supporting and fixing the keyboard The support piece 240 is bent at both sides of the upper portion of the 110, and the substrate support piece 250 coupled to the bottom of the printed circuit board 160 is bent at the center thereof to form the substrate support bracket 270 as the screw 260. ) Is fixedly coupled, and the substrate support bracket 270 is configured such that cutout grooves 271 and buffering long grooves 272 are laid out on both sides thereof.

Referring to the operation and effect of the present invention made of such a configuration as follows.

As shown in FIGS. 3 and 4, the keyboard 130 is vertically up and down at an upper portion of the support frame 110 for supporting and fixing the keyboard of the digital piano via the hinge 120 and the spring 140. When rotatably installed, when the keyboard 130 is pressed to play the piano, the descending key 130 is pressed down by the pressing portion 131 therein and the contact switch of the printed circuit board 160 is integrated. Press 161 to generate a sound, and at this time, the protrusion 132 protruding downward in the center of the keyboard 130 is an end portion 181 of the hammer 180 which rotates at an angle through the hinge 170. As soon as they come into contact with them, they slide and form a unique piano tone.

At this time, in order to soften the feel of the hammer according to the lifting and lowering of the 180, after forming the U-shaped bracket 190 at one end of the support frame 110, through the L-shaped support 191 on both sides of the upper side. By installing the rubber strips 192 on the upper and lower sides and the lower sides, respectively, the other weight portion 182 of the hammer 180 which is lifted and lowered is quenched with the rubber strip 192.

On the other hand, in order to prevent the deformation of the support frame 110 and the printed circuit board 160 for supporting and fixing the piano keyboard 130, the frame support bracket 200 in the lower side of the keyboard support frame 110 In the state, the c-shaped bent portion 210 is formed on one side of the frame support bracket 200, and then one end portion and the bent portion 210 of the keyboard support frame 110 are coupled and fixed as a screw 220. When a plurality of buffer grooves 230 are horizontally laid at the bottom of the frame support bracket 200, even when an impact is applied to the piano body (not shown), the frame support bracket 200 is maintained horizontally while being coupled thereto. The shock is absorbed to prevent deformation of the keyboard support frame 110.

In addition, the support piece 240 is bent on both sides of the support frame 110 supporting and fixing the keyboard, and the substrate support piece 250 coupled to the bottom of the printed circuit board 160 is bent at the center thereof, respectively. The substrate support bracket 270 is positioned to couple and fix the support frame 110, the printed circuit board 160, and the screw 260.

At this time, the substrate support bracket 270 is formed by the cutting grooves 271 and the buffer long grooves 272 on the lower side of the substrate support bracket 270, so that the impact force of the printed circuit board 160 generated by the keyboard to the substrate support bracket ( 270 is effectively absorbed, thereby preventing the deformation of the printed circuit board 160 in advance, thereby maintaining a constant tone.

As described above, according to the keyboard support apparatus of the present invention, the frame support bracket is rolled out to the lower side of the keyboard frame for supporting and fixing the keyboard, and the support pieces are bent to both sides at the upper portion of the support frame, and the substrate support piece is centered. By installing the substrate support bracket that is bent, it is possible to prevent the deformation caused by the impact through the frame support bracket while maintaining the horizontality of the key support frame that supports and secures the keys, as well as the impact applied to the support frame. There is an excellent effect that the deformation of the printed circuit board generated by the keyboard can be prevented in advance through the substrate support bracket, thereby maintaining a constant tone.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the following claims. Those of ordinary skill will want to know easily.

Claims (2)

The keyboard 130 is rotatably installed at an angle up and down via the hinge 120 and the spring 140 toward the upper side of the keyboard support frame 110, and a pressing part 131 is provided inside the keyboard 130. It is installed so as to be quenched with the contact switch 161 of the printed circuit board 160 is installed downward and fixed as a screw 150 on the support frame 110, in this case, the downward protruding in the center of the keyboard 130 Protrusion 132 is a hinge portion 170 is installed on one side to be in contact with the end 181 of the hammer 180 is rotated by a predetermined angle up and down, the support frame 110 at one end of the U-shaped bracket 190 is Speaking integrally, the rubber strip 192 is respectively installed on the upper and lower sides and the lower side via the support 191 to the upper both sides of the U-shaped bracket 190, the other weight portion 182 of the hammer 180 In the keyboard fixing structure of the digital piano which is in elastic contact with The frame support bracket 200 is laid out below the support frame 110 for supporting and fixing the keyboard 130, and a c-shaped bent portion 210 is formed at one side of the frame support bracket 200, thereby providing the key. One end of the support frame 110 is fixedly coupled as a screw 220, a plurality of buffer grooves 230 are laid on the bottom of the frame support bracket 200, the support frame 110 for supporting and fixing the keyboard The support piece 240 is bent at both sides of the upper part of the upper side), and the substrate support piece 250 coupled to the bottom of the printed circuit board 160 is bent at the center thereof so that the substrate support bracket 270 is provided as a screw 260. Keyboard support of the digital piano, characterized in that consisting of a fixed configuration. The keyboard supporting apparatus of claim 1, wherein the substrate support bracket (270) has cutout grooves (271) on both sides thereof, and a buffer long groove (272) on both sides thereof.

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