KR102159444B1 - Keyboard Frame and Keyboard Structure of Electronic Keyboard Instruments - Google Patents

Abstract

Disclosed is an invention for a keyboard structure of a keyboard musical instrument.
The keyboard structure of the keyboard instrument provides the benefit of improving the assembly workability, which allows the operator to easily, comfortably and stably assemble the keyboard by configuring the keyboard frame into a divided body that forms a unit based on one octave. In addition, by improving the keyboard structure, the keyboard's touch, the return power of the keyboard, and the stability of the keyboard are improved, allowing the same feeling as in a conventional acoustic piano to be transmitted, and in addition to this, a synthesizer using a strip-type pressure sensor (Synthesizer) ), and it provides a smooth treatment between the keyboard and the frame to reduce friction during keystrokes, and to assemble safely without gaps and shaking when assembling the keys.

Description

The keyboard frame and keyboard structure of electronic keyboard instruments

The present invention relates to a keyboard structure of an electronic keyboard musical instrument, and in particular, improves the touch feeling, batterability (quick return force), and stability of the keyboard, which is actually transmitted to the finger of the player through the keyboard.(彈奏感) In addition, it relates to a keyboard structure of an electronic keyboard musical instrument that improves the assembly workability of the keyboard (88 keys, 76 keys, 61 keys, etc.).

In general, it is a well-known fact that the piano is widely used as a universal musical instrument equipped with two elements, a harmony instrument and a melody instrument, because it has a rich volume, a long lingering sound, and an easy to create a change of semester.

These pianos are Yugun percussion instruments, and there may be various types depending on their shape, but broadly divided into traditional acoustic pianos and electronic pianos, acoustic pianos generate sound by making the hammer strike the strings by the force pressing the keyboard. To be able to.

On the other hand, in the electronic piano, digital electronic sound corresponding to each key is stored in an electronic circuit in advance, and when a key is pressed, the corresponding electrical contact is connected to generate a corresponding sound. For this reason, thanks to elaborate electronic engineering that makes various music and is used for various performances, and allows the electronic piano to be applied freely, electronic pianos are gaining a lot of popularity in recent years.

Electronic pianos are also supplying electronic pianos (or digital pianos, electronic organs, etc.) with a hammer installed on the keyboard in order to feel the same touch as the keyboard of a traditional acoustic piano. The keyboard is installed to be able to rotate up and down through a hinge part and a rubber spring on one side of the keyboard support frame, and a pressing part that presses the contact switch of the printed circuit board is integrally installed downward on the inside of the keyboard. By the pressing operation, the pressing part inside the keyboard touches the contact switch of the printed circuit board to generate a sound, and at this time, the pressing part protruding downward in the center of the keyboard pushes the end of the hammer and raises or lowers the hammer, To create a tone effect.

An example of such an electronic piano as described above is published in patent documents.

According to Patent Document 1,'the present invention relates to an integrated keyboard frame of an electronic keyboard instrument in which parts assembly is easy, keys of various standards can be conveniently constructed, and product uniformity and durability of the finished keyboard are improved.' Thus,'the keyboard frame of the present invention is formed by injecting plastic synthetic resin to be integrally molded; An upper fixing frame and a lower fixing frame of a predetermined length each fixed to the upper and lower plates of the electronic keyboard instrument; Key assembly frames for forming a plurality of key assembly units by connecting the upper and lower main frames at intervals corresponding to the width of individual keys and connecting them vertically; Reinforcing frames for reinforcing strength by horizontally connecting the key assembly frames; Key hinge parts protruding from the upper fixing frame of each of the key assembly parts so that one end of the key is rotatably assembled; A hammer shaft support formed on the key assembly frames at positions spaced apart from each of the key hinges by a predetermined distance, and rotatably supporting a rotation shaft of a hammer pressed and rotated by the key pressed; It integrally includes a keyboard platform 70 formed flat across the lower fixing frame and a key assembly frame adjacent thereto to support the other ends of the keys and protruding guides for preventing the left and right swings of the keys. Is initiating,

Patent Document 2 provides a keyboard structure for a keyboard instrument with enhanced return characteristics in which the touched keyboard returns to its original position, and in the case of installing the keyboard of an electronic keyboard instrument so that it can be rotated to the frame, the keyboard is easily mounted on the frame. And a structure that provides a return force that can be separated and returns the keyboard to its original position in cooperation with a hammer after the pressing force has ceased to provide a keyboard structure for a keyboard instrument with a very simple return characteristic. , Basically, like a conventional keyboard structure, a frame forming an overall skeleton; A keyboard with one side rotatably installed on the frame; It is rotatably installed on the frame, and when the other side of the keyboard is pressed, the keyboard rotates in a state in which the weight part applies a load to the keyboard, and when the key is released, the keyboard rotates to its original position by the weight of the weight part. A hammer for returning to the original position; It discloses that it includes a contact circuit board to which contacts are connected when the key is pressed to a certain position.

Patent Document 3 states that'an object of the present invention is to solve the above-described problems related to various keyboard instruments represented by an electronic piano, and to facilitate the gap between the keys and the keys for the keys mounted on the keyboard frame. It is intended to reduce the quality deterioration due to non-uniform key spacing by allowing it to be adjusted.' The key frame of the keyboard instrument with adjustable key spacing according to the present invention protrudes to be inserted into a vertical groove formed in the vertical part of the keyboard. A support that is formed to have a width narrower than that of the vertical groove; It is assembled to be vertically movable and fixed to the support, is formed to have a width corresponding to the width of the vertical groove, guides the vertical movement of the keyboard in a state inserted into the vertical groove, and prevents the left and right swing of the keyboard, and the When the assembly position for the support is moved up and down, the position includes a guide that is displaced left and right; When the assembly position of the guide with respect to the support is moved up and down and the position of the guide is displaced left and right, the position of the key into which the guide is inserted is displaced left and right, so that the distance between the adjacent key and the key is adjusted.' Is disclosed.

The electronic piano as described above should actually be able to convey the feeling almost the same as that generated by the conventional acoustic piano to the player.

However, the prior art has a problem in that it is not possible to maintain a balance between cost and performance in relation to the sound generated and the feel of a key when playing an electronic piano. That is, the prior art has a problem in that it is not possible to produce a note (sound) comparable to an acoustic piano because the return (return) speed of the keyboard is not smooth when playing at a repetitive and fast speed, and an afterimage such as shaking occurs when the keyboard is returned. This is also a factor that makes it impossible to produce a sound (sound) corresponding to a conventional acoustic piano, and in addition, there is a problem that the touch feeling of the keyboard is also inferior to that of an acoustic piano.

Accordingly, there is an urgent need to develop an electronic piano that improves the assembling workability of the electronic piano keyboard, as well as the stability of the keyboard, quick return, and touch feeling.

KR Publication No. 10-2010-0036445 KR registration number 10-1594887 KR registration number 10-1407803

The present invention was developed to supplement the problems of the prior art and provide various additional advantages, and provides the benefit of improving the workability of assembling the keyboard by improving the keyboard frame, and the improvement of the keyboard structure. It is an object of the present invention to provide a keyboard structure of an electronic keyboard musical instrument capable of delivering a feeling of play similar to that of a conventional acoustic piano by improving the touch feeling, the return power of the keyboard, and the stability of the keyboard.

An object of the present invention is to provide a keyboard structure of an electronic keyboard musical instrument capable of implementing various synthesized sounds (functional sounds) such as a synthesizer.

It is an object of the present invention to provide a keyboard structure of an electronic keyboard musical instrument in which a keyboard and a frame are smoothly maintained so that mutual friction is eliminated, and when the keyboard is assembled, it is possible to safely assemble without gap and shaking.

The above object is achieved by the keyboard structure of the electronic keyboard musical instrument provided according to the present invention.

The keyboard structure of an electronic keyboard musical instrument provided according to an aspect of the present invention includes keyboard frame units in which a keyboard frame is divided and molded into a plurality of pieces based on one octave to improve the assemblability of white keys, black keys, and hammers even in a limited working space. What is claimed is: 1. A keyboard structure of an electronic keyboard musical instrument, comprising: integrally connecting the keyboard frame units by a pair of connecting bars made of aluminum to maintain strength to prevent distortion and deformation of the keyboard frame units; Opposite to the pressing portions of the black and white keys of the key frame, each of which is installed at the facing portion of the key frame unit and the black keys and white keys to give elastic force to speed up the battering speed of the keys when keying. The elastic pieces installed to have elasticity on the bottom side and the facing portion of the end and the elastic pieces of the black and white keys protrude from the facing portion of the elastic pieces in contact with the elastic pieces, thereby causing the elastic pieces to be in contact with the elastic pieces. The keyboard repetition means is composed of keystroke protrusions that give elasticity to speed up the return speed of the black or white keys, but the elastic piece is partially connected to the key frame and the rest of the key is in a cut state. Formed integrally with the frame; Formed as an elastic horizontal plate that maintains elasticity so as to have tension between the white and black keys and the connecting portion of the key frame unit side to support the keys without shaking while speeding up the return speed of the keys like the key battering means when keying A horizontal elastic part for maintaining stability, wherein the elastic horizontal plate is integrally formed of a plastic such as the white key, the black key, and the key frame to form a thin plate; And an escape means for allowing players to feel the retreating touch of the keys on the face portions of the keyboard frame unit and the hammers operatively coupled to the black and white keys, wherein the retreating means comprises the hammers of the hammers. Small protrusions formed at predetermined positions on the curved slope by forming a curved slope toward the keyboard frame unit on the side of the keyboard frame unit and on the facing portion, and the small projections on the side of the keyboard frame unit It is in a state of being detachably coupled to each of the fields and the facing part, extending to a state in contact with the curved slope, passing through the state of being caught with the small protrusions when hitting by the player, and conveying the feeling of the retreating touch of the keys to the fingers of the players. And a touch member having protruding pieces installed thereon, wherein the touch member protrudes from either side of the support plate body and the support plate body to be detachably coupled to the keyboard frame unit side, and the touch member is long between the locking pieces and the locking pieces. It is installed to protrude and is characterized in that consisting of the protruding pieces to be brought into contact with the small protrusions.

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According to the present invention, the improvement of the keyboard frame of the electronic keyboard instrument gives the effect of making the keyboard assembly work easy and convenient and stable even for the unskilled, and the improvement of the keyboard structure is the touch feeling of the keyboard and the return force of the keyboard. And, by improving the stability of the keyboard, etc., it gives the effect of delivering the same feeling of play as transmitted in a conventional acoustic piano.

In addition, the present invention provides an effect of implementing various synthesized sounds (functional sounds) such as a synthesizer.

In addition, the present invention provides the effect of reducing friction during keystroke by smoothly processing a key and a frame, and enabling safe assembly without gap and shaking when assembling the keyboard.

1 is a perspective view showing the appearance of a keyboard structure of an electronic keyboard musical instrument according to the present invention, partially omitted,
FIG. 2 is an exploded perspective view showing only one key frame unit 112-1 in FIG. 1 to separate the key and frame parts,
3 is a view showing a state in which the keyboard frame units of FIG. 1 are integrally connected with a connecting bar as viewed from the rear side of the keyboard,
4A and 4B are perspective views showing the bottom of the white and black keys separated from FIG. 3,
5A and 5B are perspective views showing upper portions of the white and black keys of FIGS. 4A and 4B,
FIG. 6A is a cross-sectional view taken along the direction of FIG. 1, and shows an escape means for exerting a function of giving the touch feeling of a keyboard the same touch feeling as a conventional acoustic piano.
6B is an enlarged view of the dotted circle portion of FIG. 6A,
FIG. 6C is a perspective view showing a portion'A' of FIG. 6A separated,
FIG. 7 shows a strip-type pressure sensor installed on a keyboard according to the present invention and capable of implementing various synthesized sounds (functional sounds) such as a synthesizer.

Hereinafter, a more preferred embodiment of a keyboard structure of an electronic keyboard musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention will be described in detail in the detailed description of the bar, specific embodiments that can be made various changes and can have various embodiments.

However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In addition, in describing the present invention, when it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, and since these may vary according to the intention or custom of users or operators, the definition should be made based on the contents throughout the present specification describing the present invention. .

FIG. 1 is a perspective view showing the appearance of the keyboard structure of the electronic keyboard musical instrument according to the present invention, partially omitted, and FIG. 3 is a view showing a state in which the keyboard frame units of FIG. 1 are integrally connected with a connecting bar as viewed from the rear side of the keyboard. It is a drawing.

As shown in the drawings, the keyboard frame and keyboard structure 100 of the electronic keyboard instrument applied to the present invention are made of plastic harmless to the human body.
The keyboard frame 110 is divided and molded into a number of pieces based on one octave to facilitate assembly of the keyboard frame 110 along with the white keys 114, the black keys 116 and the hammers 118 even in a limited work space. It has units 112-1 to 112-9.

Although only one key frame unit 112-1 based on 1 octave is shown in Fig. 1, in reality, as shown in Fig. 2, a 1 octave key consisting of 12 keys by combining the white keys 114 and the black keys 116 A total of 84 keys (keys) are made of seven frame units, and the three keys of the keyboard frame units 112-8 and 112-9 and one key are combined to form a total of 88 keys (keys). Is done.

The fact that the keyboard frame 110 is divided into a plurality of keyboard frame units 112-1 to 112-9 can reduce the cost of making a mold, whether it is a problem when manufacturing a conventional keyboard into one frame, In addition, it is to be able to efficiently assemble the keyboard frame 110 even within a limited narrow space.

The keyboard frame units 112-1 to 112-9 are connected by a pair of elongate connecting bars 120 made of aluminum to form the integrated keyboard frame 110 in order to achieve weight reduction. The integral connection of the keyboard frame units 112-1 to 112-9 by the connection bar 120 provides durability that allows the keyboard frame 110 to maintain strength that prevents distortion and deformation. .

In the above embodiment, as an example, an 88-key electronic piano keyboard is configured as a plurality of division units, but it may also be applied to an electronic piano keyboard composed of 76 keys and 61 keys.

FIG. 2 is a separate perspective view showing only one key frame unit 112-1 in FIG. 1 and separated from the key part and the frame part, and FIGS. 4A and 4B are the white keys and the black keys in FIG. It is a perspective view showing.

As shown in the drawing, the keyboard according to the present invention is provided with a key battering means 130 that speeds up the return speed of the keys when the keys are keyed (打鍵).

The key battering means 130 includes semicircular elastic pieces 132 installed on the keyboard frame unit 112-1 and key protrusions 134 installed on the white keys 114 and the black keys 116 Consists of The elastic pieces 132 installed toward the keyboard frame unit 112-1 are pressed portions 114-1 and 116-1 of the white keys 114 and the black keys 116 of the key frame unit 112-1. ) And the bottom side of the opposite end and the opposite end, only a part is connected, and the rest is in an ablated state to provide elasticity so as to be integrally formed with the keyboard frame 110.

The keying protrusions 134 positioned corresponding to each of the elastic pieces 132 are the elastic pieces 132 from the facing portions of the elastic pieces 132 of the white keys 114 and the black keys 116. ), the elastic force that protrudes in contact with the white key 114 and the black key 116 to accelerate the return speed of the white key 114 and the black key 116 when the elastic pieces 132 are pressed. Is to be granted.

When the player hits the white key 114 and the black key 116 or the white key 114 or the black key 116, the key protrusions 134 are the elastic pieces. At the moment when the elastic pieces 132 are pushed downward and deformed while in contact with the elastic pieces 132, the elastic pieces 132 are applied from the keying protrusions 134 by the restoring force of the elastic pieces 132 The losing elastic force has the advantage of speeding the return speed of the keys (114, 116), which are pressing downward, so that the players can play while accelerating the battering speed of the keys (114, 116).

5A and 5B are perspective views showing upper portions of the white and black keys of FIGS. 4A and 4B.

As shown in the drawing, the electronic keyboard musical instrument according to the present invention includes a horizontal elastic part 140 that allows the white keys 114 and the black keys 116 to stably play without shaking. The horizontal elastic part 140 for maintaining stability will be described with reference to FIG. 2.

The horizontal elastic part 140 for maintaining stability is composed of elastic horizontal plates 142 formed of thin plates to maintain strong tension, and the elastic horizontal plates 142 are the white keys 114 and the black keys 116 It is installed at the opposite end of the pressing parts 114-1 and 116-1 of the keyboard frame unit side (112-1 to 112-9) and the connection part (114-2, 116-2) of the white key 114, the black keys In addition to imparting elastic force to speed up the hitting speed of 116, it functions to stably hold the white keys 114 and the black keys 116 to the left and right without shaking.

That is, the elastic horizontal plates 142 are integrally connected to the key frame units 112-1 to 112-9 of the white keys 114 and the black keys 116, and provide elasticity such as a leaf spring. , While speeding up the return speed of the keys 114 and 116 with the elastic force imparted from the elastic horizontal plates 142, like the key battering means 130, the elastic horizontal plates 142 of the keys 114 and 116 There is an advantage of maintaining the stability of the keyboard as a whole by exerting the power to support the entire cross-section and catching even the slightest tremors such as the keys 114 and 116 shaking left and right during keying.

Figure 6a is a cross-sectional view taken along the direction of Figure 1, showing that the touch of the keyboard has a retreat function (escapement) to give the touch feeling like an acoustic piano, Figure 6b is a dotted circle of Figure 6a It is an enlarged view, and FIG. 6C is a perspective view showing a portion'A' of FIG. 6A separated.

As shown in the figure, the electronic keyboard musical instrument according to the present invention is provided with an escape means (escapement) 150 that exerts a function of giving a touch feeling like an acoustic piano. The retreat means 150 forms a curved slope 151 toward the keyboard frame unit 112-1 on the keyboard frame unit side 112-1 of the hammers 118 and protrudes. Each having a protruding inclined portion 152, hemispherical small protrusions 153 formed at predetermined positions of the curved inclined surface 151 and the small protrusions 153 on the side of the keyboard frame unit 112-1 The guns (114, 116) are extended in contact with the curved sloped surface 151 while being detachably coupled to each of the confronting regions, so that the keys (114, 116) pass while being engaged with the small protrusions 153 when the keys are hit by the player. It includes a touch member 156 in which protruding pieces 156-1 are installed to allow the feeling of the retreat of the touch.

The touch member 156 has a predetermined shape of the support plate body 156-2 and a pair of locking pieces protruding from both sides of the support plate body to be detachably coupled to the keyboard frame unit side 112-1 ( 156-4) and the protruding pieces 156-1 are installed to protrude between the locking pieces 156-4 to come into contact with the small protrusions 153.

The configuration of the retreat means 150 as described above is that each hammer 118 connected to the guns 114 and 116 when the performers hit the keys 114 and 116 by playing the action ends 118-2 of the hammers 118 ) Moves downward with the guns 114 and 116 using the rotation shaft 117 as a support point, but the hammer part 118-1 on the opposite side to the action end 118-2 rises upward, and at this time, the rotating hammer Rotate toward the touch member 156 at the ends of the protruding pieces 156-1 of the touch member 156 in contact with the curved inclined surface 151 of the protruding inclined portion 152 of 118 The touch that passes by while being caught on the small protrusions 143 of the curved slope 151 is transmitted to the fingers of the players, so that the players can feel the retreat touch of the keys 114 and 116. The moment the players remove their fingers from the guns 114 and 116 after feeling the touch, the hammer 118 quickly returns to its original position by the weight of the hammer unit 118-1, and the small protrusions 153 that make the retreat touch feel Since it protrudes in a hemispherical shape, it does not have any effect on the return of the hammer 118.

The installation of the hammer 118 in an electronic keyboard instrument is installed to give the player the pleasure of playing, allowing them to play while feeling the touch of the keys as in an acoustic piano.

7 shows a strip-type pressure sensor capable of implementing various synthesized sounds (functional sounds) such as a synthesizer used in a keyboard according to the present invention.

As shown in the drawing, in the electronic keyboard instrument according to the present invention, a strip-type pressure sensor (Force Sensitive Resistor) 160 is installed on the keyboard to be connected to an electronic circuit board to freely implement a synthesized sound such as a synthesizer. Thus, there is an advantage that can make the performers more enjoyable in playing.

In addition, the electronic keyboard instrument according to the present invention has the advantage of minimizing the occurrence of vibration due to friction with the keys by minimizing the coefficient of friction with the keys during keying by smoothly forming the molded surface of the key frame formed of plastic from the mold.

The present invention has an advantageous advantage that can be applied to all electronic keyboard musical instruments.

100: keyboard frame and keyboard structure of an electronic keyboard instrument
110: keyboard frame
112-1~112-9: keyboard frame unit
114: 100 cases
116: black key
118: hammer
120: connection bar
130: keyboard battering means
132: elastic piece
134: keying projection
140: horizontal elastic part for maintaining stability
142: elastic horizontal plate
150: Escapement
151: curved slope
152: protruding slope
153: small projection
156: touch member
156-1: protruding piece
156-2: support plate body
156-4: stuck pieces

Claims (7)

In the keyboard structure of an electronic keyboard musical instrument including a keyboard frame unit in which the assembling property of white keys, black keys, and hammers is improved even in a limited working space by dividing and molding the keyboard frame into multiple pieces based on one octave,
Integrally connecting the key frame units by a pair of connecting bars made of aluminum in order to maintain the strength of preventing distortion and deformation of the key frame units;
Opposite to the pressing portions of the black and white keys of the key frame, each of which is installed at the facing portion of the key frame unit and the black keys and white keys to give elastic force to speed up the battering speed of the keys when keying. The elastic pieces installed to have elasticity on the bottom side and the facing portion of the end and the elastic pieces of the black and white keys protrude from the facing portion of the elastic pieces in contact with the elastic pieces, thereby causing the elastic pieces to be in contact with the elastic pieces. The keyboard repetition means is composed of keystroke protrusions that give elasticity to speed up the return speed of the black or white keys, but the elastic piece is partially connected to the key frame and the rest of the key is in a cut state. Formed integrally with the frame;
Formed as an elastic horizontal plate that maintains elasticity so as to have tension between the white and black keys and the connecting portion of the key frame unit side to support the keys without shaking while speeding up the return speed of the keys like the key battering means when keying A horizontal elastic part for maintaining stability, wherein the elastic horizontal plate is integrally formed of a plastic such as the white key, the black key, and the key frame to form a thin plate; And
Each of the keyboard frame units and the hammers coupled to the black keys and the white keys are provided with escape means for allowing players to feel the retreating touch of the keys, wherein the retreating means comprises the keys of the hammers. Small protrusions formed at a predetermined position on the curved slope by forming a curved slope toward the keyboard frame unit and protruding inclined portions on the side of the frame unit and on the facing portion, and the small projections on the side of the keyboard frame unit It is in a state of being detachably coupled to each of the and facing parts, extending in contact with the curved slope and passing through the state of being caught with the small protrusions when hitting by the player, conveying the feeling of the retreating touch of the keys to the fingers of the performers to feel. It includes a touch member provided with protruding pieces, wherein the touch member protrudes from both sides of the support plate body and the support plate body and protrudes long between the locking pieces and the locking pieces detachably coupled to the keyboard frame unit side. It is installed to be composed of the protruding pieces to be in contact with the small protrusions; The keyboard structure of an electronic keyboard musical instrument comprising a.
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