KR101014809B1 - Clavier for digital piano - Google Patents

Abstract

The present invention relates to a keyboard for a digital piano which has improved the restoring force and the touch feeling of the keyboard. According to the present invention, it is possible to improve the assembling, precision and resilience as well as to prevent the occurrence of other sounds by ensuring that the keyboard is installed in the frame installed in the playing section of the digital piano without being spaced in place. You can do it.

Digital piano, keyboard, resilience, a feeling of touch.

Description

 Keyboard for digital piano {CLAVIER FOR DIGITAL PIANO}

The present invention relates to a keyboard for a digital piano, and more particularly, to ensure that the keyboard is installed in a frame installed in the playing portion of the digital piano without being separated from the keyboard, thereby improving assembly and precision. In addition, the present invention relates to a keyboard for a digital piano that can prevent generation of other sounds and deterioration of resilience.

In general, a digital piano is also called an electronic piano, and is a keyboard musical instrument that plays by playing a preset electronic sound when a key is pressed.

Since the digital piano uses a preset digital sound, there is no need for tuning and there are various advantages such as being able to use it with other devices by incorporating the sounds of various instruments such as a violin and a saxophone. It is also widely used in the actual stage.

However, according to the keyboard of the existing digital piano, since one octave (7 keys) is assembled into a frame, each module must be arranged in order to form an average scale of 7 octaves (85 to 88). Because of the large number of assembly processes, assembly takes a lot of time. In addition, the foreign matter enters through the separation between the keys, as well as other sounds occur in the process of tapping the key, there was a problem that the resilience is lowered and the product quality is lowered.

Therefore, the present invention has been proposed to solve the above problems, by ensuring that the correct position is installed on the frame installed in the playing section of the digital piano without spaced apart, it is possible to improve the assembly and precision It is also an object of the present invention to provide a keyboard for a digital piano that can prevent the occurrence of other sounds and the deterioration of resilience.

The object is made of a resin material having a receiving space of the same size, the frame is accommodated in the receiving space at a predetermined interval and the frame having a locking projection protruding at an upper predetermined position, and touch by the player Multi-fold bending to achieve a predetermined inclination angle by a key and a predetermined length having a vibration control unit for preventing vibration by receiving an elastic member or an anti-shake piece having elasticity on one side and rotatably installed on the frame to realize a corresponding sound. It is formed so as to be rotatably connected to the keyboard and installed to be in contact with any one of the upper or lower rubber switch (Rubber Switch) is installed adjacent to the pivot point and is loaded by the weight by pressing the corresponding key by the weight portion Rotates to the state where the key is applied and returns to its original position by its own weight when the key is released. It includes a hammer having a rotational coupling portion that is given elasticity from the elastic member or the anti-vibration piece to be fitted to the shaking control portion to apply a repulsive elasticity to the keyboard to improve the after-touch feeling when the keyboard is rotated Is achieved by a keyboard for a digital piano.

The hammer is rotatably coupled to one side of the keyboard and protruded at a predetermined position and provided at a position adjacent to the fixing protrusion and a fixing protrusion fastened to the fastening hole of the keyboard to hold the elastic member. The coupling portion may be disposed to be positioned at the bottom of the keyboard, and may be composed of a weight part having a weight of a predetermined weight while being formed at a predetermined length and being bent in multiple stages at a predetermined inclination angle.

The hammer is rotatably coupled to one side of the keyboard and protruded at a predetermined position to form a fixed protrusion which is fastened to the fastening hole of the keyboard and a body adjacent to the fixing protrusion, and is fitted to the vibration control unit. Combination is composed of a rotating coupling portion having an anti-shake piece coupled to prevent the shaking of the keyboard, and a weight portion having a weight having a predetermined weight while being formed in a predetermined length and bent in multiple stages at a predetermined inclination angle to the bottom of the keyboard Can be.

The keyboard is extended to form a predetermined length and protruding to the bottom (저 部) and the locking projections and guides so as to prevent the separation of the keyboard from the frame and to be rotated only by a predetermined turning radius is caught on the locking jaw A body having a fastening hole arranged to be spaced apart from the engaging protrusion and forming a curved long hole, an extension part formed on one side of the body and having a vibration control part for fitting an elastic member at a predetermined position, and adjacent to the vibration control part; Rotating support portion which is formed to protrude in a position to contact the support protrusion formed on one side of the rotating coupling portion of the hammer while supporting the rotation of the hammer, and a fastening protrusion formed on one side of the extension portion to the inside of the frame It may be composed of a fastening groove which is rotatably fastened.

The rubber switch is in contact with the contact portion disposed on the printed circuit board (PCB) disposed in the upper and lower portions of the receiving space according to whether the key is pressed or pressed to implement the sound. And a rubber cap made of a resin material having a vent hole that is elastically reacted to press or return to its original state according to whether the key is pressed, and protrudes inside the rubber cap and presses the key when the key is pressed. Relief protrusion to be in contact with the conductive portion, and the second portion is formed at the end portion is spaced apart at regular intervals at the edge portion of the rubber cap is fitted to the side of the printed circuit board and become thinner toward the printed circuit board The stepped portion may be formed of a fitting protrusion formed stepped to be smaller than the diameter of the first stepped portion of the portion extending from the rubber cap.

The printed circuit board may further include a ventilation hole formed at a position adjacent to the contact portion and discharging air pressure when contacting the relief protrusion and the contact portion to prevent sound generation.

At the tip side of the frame, there is further provided a guide member which is formed as a plate or a bar type and protrudes and is receivably installed at the lower portion of the back key of the keyboard to guide the vertical movement of the back key. Can be.

The object is made of a resin material having a receiving space of the same size, the hammer is formed on one side of the receiving jaw and the receiving space protruding to the predetermined position at the same time to accommodate the keyboard at a predetermined interval in the receiving space. A frame having a guide member protruding from the protrusion and one end to guide the vertical movement of the keyboard, and rotatably installed on the frame so as to be touched by the player to implement the sound, and having elasticity on one side. The upper or lower rubber switch (Rubber) installed to be adjacent to the pivot point to be rotatably fastened to the hammer fitting protrusion by forming a key having a vibration control unit for receiving an elastic member to prevent shaking and having a predetermined length to form a predetermined inclination angle. Switch is installed in contact with one of the switches and is pressed when the corresponding key is pressed by the weight part. While rotating in the state of applying the load to the key, and returning to its original position by its own weight when releasing the key, and receiving elasticity from the elastic member fitted to the shake control unit, and repulsing the key when the key is rotated. It may also be achieved by a keyboard for a digital piano that includes a hammer having a rotational coupling portion that applies elasticity to improve the aftertouch feeling.

The guide member may be formed in any one of a plate shape or a bar type, and may protrude and be installed in a lower portion of the back key of the keyboard to guide the vertical movement of the back key.

The hammer may include a rotation coupling portion having a fitting groove rotatably coupled to the hammer fitting protrusion and a coupling protrusion provided at a position adjacent to the fitting groove to hold the elastic member, and disposed at a bottom of the keyboard and at a predetermined level. It may be composed of a weight portion having a weight of a predetermined weight at one end while being formed in multiple stages bent at a predetermined inclination angle.

The keyboard is formed to extend to a predetermined length and protruded at the bottom to prevent the separation of the keyboard from the frame by hanging on the locking jaw, and also provided with a locking projection for guiding so that it can be rotated only by a predetermined turning radius. A body which is touched by the body, an extension part formed on one side of the body and having an oscillation control part fitted with an elastic member at a predetermined position, and protruding at a position adjacent to the oscillation control part on one side of the rotation coupling part. Rotating support for supporting the rotation of the hammer while contacting the protruding support projection, and may be composed of a fastening groove formed on one side of the extension portion to be rotatably fastened to the fastening protrusion provided on the inside of the frame.

The rubber switch is in contact with the contact portion disposed on the printed circuit board (PCB) disposed in the upper and lower portions of the receiving space according to whether the key is pressed or pressed to implement the sound. And a rubber cap made of a resin material having a vent hole that is elastically reacted to press or return to its original state according to whether the key is pressed, and protrudes inside the rubber cap and presses the key when the key is pressed. Relief protrusion to be in contact with the conductive portion, and the second portion is formed at the end portion is spaced apart at regular intervals at the edge portion of the rubber cap is fitted to the side of the printed circuit board and become thinner toward the printed circuit board The stepped portion may be formed of a fitting protrusion formed stepped to be smaller than the diameter of the first stepped portion of the portion extending from the rubber cap.

The printed circuit board may further include a ventilation hole formed at a position adjacent to the contact portion and discharging air pressure when contacting the relief protrusion and the contact portion to prevent sound generation.

Therefore, according to the keyboard for a digital piano according to the present invention, by ensuring that the keyboard is installed in a frame installed in the playing section of the digital piano without being spaced apart, it is possible to improve the assemblability and precision as well as other It is possible to prevent the generation of sound and the deterioration of the restoring force.

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

1 is a perspective view showing a digital piano according to the present invention, Figure 2 is a perspective view showing a state in which the back gun and the black gun is installed in the frame, Figure 3 is a state in which the back gun is installed in the frame Figure 4 is a perspective view, Figure 4 is a perspective view showing a state in which the black gun according to the present invention is installed in the frame, Figure 5 is an exploded perspective view showing a state in which the white and black gun is separated from the frame, Figure 6 White and black guns according to the present invention is an exploded perspective view showing a state separated from the frame in combination with the hammer, Figure 7 is a cross-sectional view of the line "I-I" in Figure 3, Figure 8 is another aspect of the present invention 8 is an exploded perspective view showing a state in which a white gun and a black gun are separated from a frame, and FIG. 9 is a cross-sectional view illustrating a state in which the white gun and the frame are coupled to each other in FIG. 8, and FIG. 11 is an exploded perspective view illustrating another rubber switch, FIG. 11 is an enlarged perspective view of part “A” in FIG. 10, and FIG. 12 is a cross-sectional view illustrating a state in which a rubber position according to the present invention is installed on a printed circuit board. Figure 13 is an exploded perspective view showing a state when the elastic member is coupled to the shake control unit according to an embodiment of the present invention, Figure 14 is a shake prevention piece coupled to the shake control unit according to another embodiment of the present invention Figure 15 is an exploded perspective view showing the state, Figure 15 is an exploded perspective view showing a state in which the white and black gun is separated from the frame according to another embodiment of the present invention, Figure 16 is a white and black gun in Figure 15 is a hammer FIG. 17 is an exploded perspective view illustrating a state in which the back gun and the frame are coupled to each other in FIG. 16, and FIG. 18 is an enlarged view of part “B” in FIG. 15. 19 is an enlarged view illustrating an enlarged portion "C" in FIG. 17, and FIG. 20 is an exploded view illustrating a state in which a bar type guide member is provided at the front end of the frame in FIG. 15. Perspective view.

According to the keyboard for a digital piano according to the present invention, a frame 120 in which the keyboard 130 is accommodated, a keyboard 130 accommodated in the frame 120, and a hammer 140 rotatably installed in the keyboard 130. And a rubber switch 150 installed adjacent to the pivot point of the hammer 140.

The digital piano 100 includes a sustain pedal 180 (also referred to as a 'damper pedal' or a 'loud pedal') to control the ringing of the sound, thereby realizing a desired sound by the player.

The playing part of the digital piano 100 is provided with a frame fixing frame 110 for fixing the frame 120. The frame fixing frame 110 to accommodate the keyboard module. The keyboard module is arranged side by side at a predetermined interval with one octave as one module (Module) to form a seven octave (85 to 88 cases) or to be accommodated in the frame fixing frame 110 with a seven octave as one module can do.

The frame 120 is detachably installed on the frame fixing frame 110. The interior of the frame 120 is provided with a receiving space 122 of a predetermined size so that a key 130 made of a white key and a black key is accommodated without error while maintaining a predetermined interval. 2 to 7, as shown in Figures 2 to 7, the projection 120 is provided with a locking step 124 to prevent the separation of the keyboard 130 is provided. As shown in FIGS. 4 to 8, 13, or 14, the front end of the frame 120 is formed in a plate shape or a bar type and protrudes to form a back key 130a of the keyboard 130. A guide member 126 may be further provided to be accommodated in a lower portion of the bag gun 130a to guide the vertical movement of the bag gun 130a.

The keyboard 130 is rotatably installed inside the frame 120, as shown in FIGS. The keyboard 130 is composed of a back key 130a and a black key 130b to be touched by the player during the performance to realize a corresponding sound.

The keyboard 130 is a fastening groove 136 fastened to the fastening protrusion 121 of the body 132 and the extension part 134 and the frame 120 which are formed to extend the body 132 to form a touch unit by the player. It is composed.

The body 132 is extended to form a predetermined length in the longitudinal direction. At a predetermined position of the bottom of the body 132, a locking protrusion 133a protruding in a hook shape is provided. The locking protrusion 133a is caught by the locking projection 124 of the frame 120 to prevent the keyboard 130 from being separated from the frame 120. The locking protrusion 133a may also serve to guide the keyboard 130 to be rotated only by a preset rotation radius (rotation range).

One side of the body 132 is disposed to be spaced apart from the engaging projection (133a) is provided with a fastening hole 133b formed through a curved shape having a predetermined length. The fastening hole 133b is coupled to the fixing protrusion 146 provided at one side of the hammer 140 (see FIG. 6).

The extension 134 is formed to extend on one side of the body 132. A predetermined position of the extension part 134 is provided with a vertically formed shake control part 134a through which the elastic member 170 is fitted. The shaking control unit 134a is provided with an elastic force from the elastic member 170 coupled thereto to prevent the shaking of the keyboard 130. The elastic member 170 coupled to the shaking control unit 134a may improve the restoring force when the keyboard 130 returns to its original position. The elastic member 170 may be formed of a bar type plate (Bar) having a predetermined length.

One side of the extension part 134 is provided with a fastening groove 136 rotatably fastened to the fastening protrusion 121 protruding from the inside of the frame 120. The fastening groove 136 may be formed to cut a part of the extension 134.

As shown in FIG. 7, the hammer 140 is rotatably connected to one side of the keyboard 130 at a predetermined radius.

The hammer 140 is composed of a weight part 142 having a weight body 142a and a rotation coupling part 144 installed on one side of the weight part 142 so as to be rotatably coupled to the keyboard 130 side.

The weight part 142 has a bar shape having a predetermined length and is disposed at the bottom of the body 132. The weight part 142 may be provided with a metal material having a predetermined weight. The weight portion 142, as shown in Figures 5 to 9, is formed in a multi-stage bending at a predetermined inclination angle to form a predetermined length so that it can be quickly returned to the original position by applying an appropriate physical force to the keyboard (130). One end of the weight portion 142 is provided with a weight body 142a having a predetermined weight. The rotating coupling part 144 is installed to extend at one end of the weight part 142.

Rotating coupling portion 144 is provided with a fixing projection 146 is fastened to be provided rotatably on one side of the keyboard (130). On the side of the rotation coupling portion 144, as shown in Figures 5 to 7, a coupling protrusion 148 for firmly holding the elastic member 170 may be formed on the side.

As shown in FIG. 8 or 9, the rotation coupling unit 144 may include an anti-shake piece 145 extending in a body with the rotation coupling unit 144. The anti-shake piece 145 is fitted to the shake control unit 134a of the keyboard 130 while maintaining a constant elasticity. As a result, the shaking caused when the keyboard 130 is touched and rotated by the player can be prevented.

The hammer 140 is rotatably connected to the keyboard 130 at a predetermined radius, and is supported and rotated by the rotation support part 137 provided on one side of the keyboard 130. The rotation support part 137 serves to support the rotation of the hammer 140 while contacting the support protrusion 143 protruding from one side of the rotation coupling part 144.

The hammer 140 is rotated in a state in which a certain load is applied to the keyboard 130 while being pressed when the corresponding keyboard 130 is pressed, and also returns to its original position by its own weight when the keyboard 130 is released. The hammer 140 may serve to improve the after-touch feeling by applying repulsive elasticity to the keyboard when the keyboard 130 rotates.

The rubber switch 150 is positioned adjacent to the pivot point of the hammer 140 and installed to face the contact portion 162, and controls the player to realize the desired sound while being turned on / off. Play a role. The rubber switch 150 is selectively installed at any one of the upper and lower sides of the rotation coupling part 144. The rubber switch 150 is electrically connected while being in contact with the contact portion 162 disposed in the printed circuit board (PCB) 160 installed in the accommodation space 122 of the frame 120 according to whether the keyboard 130 is pressed. On / Off.

As shown in FIG. 10, the rubber cap 152 is provided at an opposite position of the contact portion 162 provided on the printed circuit board 160.

A vent hole 153 may be formed at one side of the rubber cap 152 to discharge air pressure during the pressing operation of the rubber cap 152. The rubber cap vent 153 plays the same role as the vent hole 162 provided on the printed circuit board 160.

A bottom portion of the rubber cap 152 (for example, a position facing the contact portion 162) is provided with a relief protrusion 154 that is electrically connected to the contact portion 162 while being grounded.

An edge portion of the rubber cap 152 is provided with a fitting protrusion 155 spaced at a predetermined interval and protruding to a predetermined length. The fitting protrusion 155 is formed of the same material as the rubber cap 152 and extends with the rubber cap 152 to form a body. The fitting protrusion 155 is fitted into the coupling hole 166 formed through the printed circuit board 160. The fitting protrusion 155 is formed stepped to become thinner toward the printed circuit board 160. That is, the fitting protrusion 155, as shown in Figure 12, the first stepped portion of the portion formed to extend the diameter (d2) of the second stepped portion 155b formed at the end thereof from the rubber cap 152 It is formed stepped in a manner that is formed smaller than the diameter (d1) of (155a). At this time, the diameter d2 of the second step portion 155b is made smaller than the diameter d3 of the coupling hole 166, and the diameter d1 of the first step portion 155a is separated from the coupling hole 166. It is preferable to form slightly larger than the diameter (d2) of the coupling hole 166 so as not to fall easily.

The printed circuit board 160 is provided with contact portions 162 spaced apart from each other at predetermined intervals. The contact unit 162 may be provided in various ways such as formed on the printed circuit board 160 by screen printing. The contact portion 162 is electrically connected to a circuit (not shown) formed by screen printing or the like.

In the printed circuit board 160, as illustrated in FIG. 10 or 12, vent holes 164 disposed at adjacent positions of the contact portion 162 are formed. The ventilation hole 164 for the printed circuit board is formed to have a constant diameter and serves to discharge the air pressure generated therein during the pressing operation of the rubber cap 152 (that is, the contact of the relief protrusion and the contact portion). . Accordingly, it is possible to smoothly perform the pressing operation of the rubber cap 152 and to prevent the generation of sound.

According to the rubber switch 150 having the fitting protrusion 155 of the above-described structure, when the rubber cap 152 is installed on the printed circuit board 160, first, the diameter smaller than the diameter d2 of the coupling hole 166. The second stepped portion 155b having a portion d2 may be pushed toward the coupling hole 166 of the printed circuit board 160 to easily and conveniently secure the installation portion and the space for the rubber cap 152. Thereafter, when the player pulls the second step 155b using a hand or a forceps tool such as a pincette, the first step 155a may be stably fitted into the coupling hole 166. .

On the other hand, according to the keyboard for a digital piano according to another embodiment of the present invention, as shown in Figure 15 to 19, the frame 120 having a hammer fitting protrusion 123 on one side of the receiving space 122, and the frame The keyboard 130 accommodated in the 120, the hammer 140 is rotatably installed on the keyboard 130 and the rubber switch (Rubber Switch, 150) is installed adjacent to the pivot point of the hammer 140 .

Frame 120 is made of a resin material having the receiving space 122 of the same size and allows the keyboard (130: 130a, 130b) is accommodated at a predetermined interval in the receiving space (122). On one side of the receiving space 122 is formed a hammer fitting protrusion 123 to which the hammer 140 is rotatably fitted. The hammer fitting protrusion 123 may be injection molded by forming a body with the frame 120. The upper part of the frame 120 is provided with a locking projection 124 protruding to prevent separation of the keyboard 130. A guide member 126 is formed at the distal end of the frame 120 to protrude and form either a plate or bar type. The guide member 126 is receivably installed under the bag gun 130a and serves to guide the vertical movement of the bag gun 130a.

The keyboard 130 is composed of a back key 130a and a black key 130b, and is rotatably fastened to the frame 120 to be touched by the player to implement a corresponding sound. One side of the extension part 134 extending to the body 132 of the keyboard 130 is provided with a fastening groove 136 which is rotatably fastened to the fastening protrusion 121 of the frame 120. The fastening groove 136 may be formed to cut a part of the extension 134.

As shown in FIG. 17, the hammer 140 is rotatably fastened to the hammer fitting protrusion 123 provided in the accommodation space 122 of the frame 120. The hammer 140 is composed of a pivot coupling portion 144 having a fitting groove 147 and a coupling protrusion 148 and a weight portion 142 having a weight 142a of a constant weight. The hammer 140 is supported and rotated by the rotation support part 137 provided on one side of the keyboard 130. The rotation support part 137 serves to support the rotation of the hammer 140 while contacting the support protrusion 143 protruding from one side of the rotation coupling part 144.

The fitting groove 147 is rotatably fastened to the hammer fitting protrusion 123 located at the bottom of the rotation coupling part 144 and provided in the accommodation space 122 of the frame 120.

Coupling protrusion 148 is protruded on one side of the rotation coupling portion 144 and coupled to the shaking control unit 134a to prevent the trembling of the keyboard 130 and to restore the restoring force when the keyboard 130 returns to its original position. The elastic member 170 to be improved is secured to hold. The elastic member 170 may be formed of a bar type plate (Bar) having a predetermined length.

The weight part 142 has a bar shape having a predetermined length and is disposed at the bottom of the body 132. The weight part 142 may be provided with a metal material having a predetermined weight. The weight part 142 is formed in a predetermined length in a multi-stage bending at a predetermined inclination angle to apply a suitable physical force to the keyboard 130 to be able to quickly return to the original position. One end of the weight portion 142 is provided with a weight body 142a having a predetermined weight. The rotating coupling part 144 is installed to extend at one end of the weight part 142.

The hammer 140 is rotated in a state in which a certain load is applied to the keyboard 130 while being pressed when the corresponding keyboard 130 is pressed, and also returns to its original position by its own weight when the keyboard 130 is released. The hammer 140 may serve to improve the after-touch feeling by applying repulsive elasticity to the keyboard when the keyboard 130 rotates.

Since the rubber switch 150 is similar to that disclosed in each embodiment of the present invention described above with reference to FIGS. 1 to 12, detailed description thereof will be omitted.

Although the exemplary embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to such specific embodiments, and the scope obvious to those skilled in the art to which the present invention belongs belongs to the scope of the claims of the present invention. It should be interpreted as belonging to.

1 is a perspective view of a digital piano according to the present invention;

Figure 2 is a perspective view showing a state in which the white and black guns installed in the frame according to the present invention,

Figure 3 is a perspective view showing a state in which the back gun is installed in the frame according to the present invention,

4 is a perspective view showing a state in which the black key is installed in the frame according to the present invention;

5 is an exploded perspective view showing a state in which the white and black guns are separated from the frame according to the present invention;

FIG. 6 is an exploded perspective view showing a state in which a white gun and a black gun are separated from a frame in a state in which they are combined with a corresponding hammer;

7 is a cross-sectional view taken along the line “I-I” in FIG. 3;

8 is an exploded perspective view showing a state in which a white gun and a black gun are separated from a frame according to another embodiment of the present invention;

9 is a cross-sectional view showing a combined state of the back gun and the frame in FIG. 8;

10 is an exploded perspective view showing a rubber switch according to the present invention;

FIG. 11 is an enlarged perspective view of part “A” in FIG. 10;

12 is a cross-sectional view showing a state in which the rubber switch according to the invention installed on a printed circuit board,

Figure 13 is an exploded perspective view showing a state when the elastic member is coupled to the shaking control unit according to an embodiment of the present invention,

14 is an exploded perspective view showing a state when the anti-shake piece is coupled to the anti-shake control unit according to another embodiment of the present invention,

15 is an exploded perspective view showing a state in which a white gun and a black gun are separated from a frame according to another embodiment of the present invention;

FIG. 16 is an exploded perspective view showing a state in which the white gun and the black gun of FIG. 15 are separated from a frame in a state of being coupled with a corresponding hammer;

17 is a cross-sectional view showing a combined state of the back gun and the frame in FIG. 16;

18 is an enlarged perspective view of part “B” in FIG. 15;

19 is an enlarged view of an enlarged view of a portion “C” in FIG. 17;

FIG. 20 is an exploded perspective view illustrating a state in which a bar type guide member is provided at a tip end of the frame in FIG. 15.

** Explanation of symbols for main parts of the drawing **

100: digital piano, 110: frame fixing frame,

120: frame, 122: accommodation space,

124: locking jaw, 126: guide member,

130: keyboard, 130a: white key,

130b: black gun, 132: body,

133a: locking projection, 133b: fastening hole,

134: extension portion, 134a: shake control unit,

136: fastening groove, 137: rotation support,

140: hammer, 142: parts by weight,

142: weight, 143: support protrusion,

144: rotational coupling portion, 145: anti-shake piece,

146: fixing protrusion, 147: fitting groove,

148: engaging projection, 150: rubber switch (Rubber Switch),

152: rubber cap, 153: rubber cap vents,

154: relief protrusion, 155: fitting protrusion,

155a: first stepped portion, 155b: second stepped portion,

160: printed circuit board (PCB), 162: contact portion,

164: ventilation hole for the printed circuit board, 166: coupling hole,

170: elastic member.

Claims (13)

delete A resin frame having a plurality of accommodating spaces formed in the same size, and having a locking projection protruding at a predetermined position of the plurality of accommodating spaces; In order to realize the sound by being touched by a player, a vibration control unit is installed in the interior of the plurality of accommodation spaces so as to be rotatable one by one for each accommodation space and accommodates an elastic member having elasticity on one side to prevent shaking. A plurality of keys formed; And The elastic member is disposed at each bottom of the plurality of keys and rotatably coupled to one end of the keyboard and protruded to be engaged with each of the fastening holes of the plurality of keys, and provided at a position adjacent to the fixing protrusion. It includes a hammer consisting of a rotating portion having a coupling protrusion for holding a weight portion having a weight body formed by bending in multiple stages extending from the rotating coupling portion to form a predetermined inclination angle, The hammer is brought into contact with the rubber switch of any one of the upper and lower rubber switches installed adjacent to the pivot coupling portion, while being pressed when the corresponding key is pressed to rotate in a state where a load is applied to the keyboard. When the key is released, the weight is returned to its original position while being rotated by the weight of the weight part, and when the pivot is rotated, the elastic member fitted to the vibration control unit is applied to the keyboard to apply repulsive elasticity. Keyboard for digital piano, characterized by improving the sense of touch. A resin frame having a plurality of accommodating spaces formed in the same size, and having a locking projection protruding at a predetermined position of the plurality of accommodating spaces; A plurality of keys that are touched by a player to be able to realize a corresponding sound, and are rotatably installed in the accommodation spaces one by one for each accommodation space, and on one side of which a tremor control unit is provided to prevent tremor; And Disposed on each bottom of the plurality of keys so as to be rotatably coupled to one end of the keyboard, and to form a body at a position adjacent to the fixing protrusion and the fixing protrusion protruding to be coupled to each of the fastening holes of the plurality of keys. It is extended to form a rotation engaging portion having an anti-shake piece to prevent the shaking of the keys by being fitted to the shaking control unit and a weight body that is formed to be bent in multiple stages to extend a predetermined inclination angle extending from the rotation coupling portion A hammer comprising parts by weight, The hammer is brought into contact with the rubber switch of any one of the upper and lower rubber switches installed adjacent to the pivot coupling portion, while being pressed when the corresponding key is pressed to rotate in a state where a load is applied to the keyboard. When the key is released, the weight is returned to its original position while being rotated by the weight of the weight part, and when the rotation is imparted with the elasticity of the anti-shake piece fitted to the vibration control unit, the repulsive elasticity is applied to the keyboard. Keyboard for digital piano, characterized by improving the sense of touch. The keyboard according to claim 2 or 3, wherein It extends and is formed in a predetermined length and protrudes from the bottom to prevent the detachment of the keyboard from the frame by being caught on the locking jaw, and to be spaced apart from the locking projection and the locking projection to guide the pivot only by a predetermined turning radius. A body having a fastening hole disposed and forming a curved long hole, An extension part formed on one side of the body and having a shaking control part for fitting an elastic member to a predetermined position; A rotation support part formed to protrude at a position adjacent to the shaking control part and in contact with a support protrusion protruding from one side of the rotation coupling part of the hammer while supporting the rotation of the hammer; A keyboard for a digital piano, which is formed on one side of the extension part and is formed from a fastening groove rotatably fastened to a fastening protrusion provided inside the frame. According to claim 2 or 3, wherein the rubber switch, According to whether the key is pressed or not, the sound is turned on / off by contact with a contact part disposed on a printed circuit board (PCB) disposed above and below the accommodating space. Resin rubber cap (Rubber) having a vent hole that is elastically reacts to press or return to the original state depending on whether the key is pressed, A relief protrusion protruding in the rubber cap and being in contact with the contact portion when the key is pressed; The diameter of the second stepped portion is formed at the edge portion of the rubber cap spaced at a predetermined interval to be fitted to the printed circuit board side and gradually become thinner toward the printed circuit board is formed at the end is extended from the rubber cap A keyboard for a digital piano, characterized in that it is configured from a fitting protrusion formed stepped to be smaller than the diameter of the first stepped portion of the portion. The method of claim 5, wherein the printed circuit board, And a vent hole formed at a position adjacent to the contact portion to prevent air generation by discharging air pressure when the relief protrusion and the contact portion are in contact with each other. The front end side of the frame according to claim 2 or 3, Protrudingly formed in any one of a plate shape or a bar shape is receivably installed in the lower portion of the keyboard, further comprising a guide member for guiding the up and down movement of the keyboard Keyboard for digital pianos. delete delete A plurality of accommodation spaces having the same size are formed, and a locking jaw is formed to protrude at a predetermined position of the plurality of accommodation spaces, and a hammer fitting protrusion and a guide member are formed to protrude at positions away from the locking jaw. Resin frame; Touched by a player to be able to realize the sound is installed in each of the receiving space rotatably one by one in the receiving space is guided up and down by the guide member, the elastic member having an elastic on one side A plurality of keys formed with a tremor adjustment unit for receiving and preventing tremor; And A rotation coupling portion having a fitting groove disposed at each bottom of the plurality of keys so as to be rotatably coupled to the hammer fitting protrusion, and provided at a position adjacent to the fitting groove to hold the elastic member. It includes a hammer made of a weight portion having a weight extending in a multi-stage to form a predetermined inclination angle extending from the rotational coupling portion, The hammer is brought into contact with the rubber switch of any one of the upper and lower rubber switches installed adjacent to the pivot coupling portion, while being pressed when the corresponding key is pressed to rotate in a state where a load is applied to the keyboard. When the key is released, the weight is rotated by the weight of the weight part to return to the original position, and when the pivot is rotated, the elastic member fitted to the vibration control part is applied to the keyboard to apply resilience to the after Keyboard for digital piano, characterized by improving the sense of touch. The method of claim 10, wherein the keyboard, The body is formed by extending to a predetermined length and protruding at the bottom to prevent the separation of the keyboard from the frame by hanging on the locking jaw and to be guided so as to be rotated only by a predetermined turning radius and touched by the player. An extension part having a vibration control part extending from one side of the body and fitted with an elastic member at a predetermined position; and a support protrusion protruding from one side of the pivot coupling part to protrude at a position adjacent to the vibration control part; The keyboard for digital piano, characterized in that consisting of a rotating support for supporting the rotation of the hammer and a fastening groove which is formed on one side of the extension portion to be rotatably fastened to the fastening protrusion provided on the inside of the frame. The method of claim 10, wherein the rubber switch, Depending on whether the key is pressed or not, the corresponding sound can be realized while being turned on / off by contact with a contact part disposed on a printed circuit board (PCB) disposed above and below the accommodating space. A rubber cap made of a resin material having a vent hole that is elastically reacted by pressing or returning to an original state according to whether the press is pressed, and a protrusion is formed in the rubber cap, and when the key is pressed, it is brought into contact with the contact portion. The diameter of the second stepped portion formed at the end of the relief protrusion to be formed, and is spaced apart at regular intervals at the edge portion of the rubber cap is fitted to the printed circuit board side and gradually thinner toward the printed circuit board. Digital piano, characterized in that consisting of the fitting protrusion formed stepped to be smaller than the diameter of the first stepped portion of the portion extending from the rubber cap Keyboard. The method of claim 12, wherein the printed circuit board, And a vent hole formed at a position adjacent to the contact portion to prevent air generation by discharging air pressure when the relief protrusion and the contact portion are in contact with each other.

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