JP2010237425A - Keyboard instrument of electronic piano - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard instrument of an electronic piano and a keyboard of the electronic piano. <P>SOLUTION: The keyboard instrument of the electronic piano includes a major support frame 1, an upper support frame 2, a lower support frame 3, white keys 22, black keys 23, electrical conducting rubber 41, a printed board 40, a first lever arm 33, and a second lever arm 34. The major support frame 1 has a stair structure including a first stair 4, a second stair 5, and a third stair 6 being sequentially linked. The upper support frame 2 is positioned at the third stair 6, and the lower support frame 3 is positioned below the first stair 4 and the second stair 5. The white keys 22 and the black keys 23 are positioned on the major support frame 1 and the upper support frame 2 and are linked to the upper support frame 2. The first lever arm 33 and the second lever arm 34 pass through a connection part of the first stair 4 and the second stair 5 and the lower support frame 3 and are linked to the white keys 22 and the black keys 23, respectively. The electrical conductive rubber 41 is stuck on the printed board 40 and positioned below the second stair 5 and the third stair 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a musical instrument. Specifically, the present invention relates to an electronic piano keyboard device and an electronic piano keyboard.

  As the standard of living increases, people are increasingly demanding the quality of electronic musical instruments, and in particular, the demands for the feel of an electronic piano keyboard are becoming stricter. However, the tactile sensation of a conventional electronic piano keyboard is significantly different from that of a traditional piano keyboard. The main cause is that it is difficult to control the pressing of the electronic piano keyboard and the spring back. Some keyboards have strong resistance when pressed, and the spring back is too early, so that the fingers have a feeling of pressure and the player's hand tends to get tired. On the other hand, a certain keyboard is easy to press and has a slow spring back, so that a conspicuous hammer effect is not felt. The problem of electronic piano keyboard pressing and spring back has long been one of the most desired problems in this area.

  The problem to be solved by the present invention is to provide an electronic piano keyboard device and an electronic piano keyboard, which creates a tactile feel of the piano keyboard for the general public and allows the performer to enjoy the performance to the fullest Can do.

  In order to solve the above-described technical problems, the present invention includes an electronic piano keyboard device comprising a main support frame, an upper support frame, a lower support frame, a white key, a black key, an electrically conductive rubber, and a printing. A substrate, a first arm and a second arm are provided. As its features, the main support frame has the first staircase, second staircase and third staircase, the upper support frame is located on the third staircase, and the lower support frame is below the first and second staircases. Located in. The white key and the black key are located on the main support frame and the upper support frame, and are connected to the upper support frame. The first and second arm are connected to the first and second steps and the lower support. Go through the frame and connect with the white key and the black key, respectively. The electrically conductive rubber is applied on the printed circuit board and is located below the second and third steps.

  In the above-described electronic piano apparatus, for example, the first staircase is connected to the front extending plate, the front extending plate includes the upper folding plate, and the third staircase is connected to the lower extending plate.

  The electronic piano device described above has, for example, a protruding portion that supports the white key on the upper folding plate of the forward extension plate, and supports the black key on the second step, as shown in claim 3. It has a protruding part.

  In the electronic piano device described above, for example, as shown in claim 4, the first cap wraps the first protruding portion, and the second cap wraps the second protruding portion.

  In the above-described electronic piano device, for example, as shown in claim 5, the upper support frame is provided with the first convex base and the second convex base, and the back side of the white key is put on the first convex base. Put the back side of the black key on the second convex base.

  In the above-described electronic piano device, for example, as shown in claim 6, the first convex plate has a first shaft hole, and a white key shaft that fits the first shaft hole is behind the white key. The first spring plate passes through the first convex plate, and one end of the first spring plate is located in the slot of the first upper support frame, and the other end is behind the white key. Located in the slot of the white key support frame. The second convex plate has a second shaft hole, and a black key shaft that fits the second shaft hole is located behind the black key, and the black key shaft passes through the second shaft hole. The second spring plate passes through the second convex plate, one end of the second spring plate is located in the slot of the second upper support frame, and the other end is behind the black key. Located in the slot of the black key support frame.

  In the electronic piano device described above, for example, as shown in claim 7, the first rod arm is connected to the first rod hammer, the second rod arm is linked to the second rod hammer, and the first rod arm is connected to the front end of the first rod arm. Has a rectangular groove, has a second rectangular groove at the front end of the second saddle arm, and a shaft is fitted into the front ends of the first and second saddle arms, and the shaft is a shaft hole in the lower support frame Passing through, the first arm and the second arm can rotate their axes.

  In the above-described electronic piano apparatus, for example, as shown in claim 8, a first shock absorber is provided on the second step, and the second shock absorber (shock) is provided on the upper folding plate of the forward extending plate. a third shock absorber is provided under the upper folding plate of the front extension plate, and a fourth shock is provided at the adjacent edge of the lower extension plate and the upper support frame extension plate. A shock absorber is provided, and a fifth shock absorber is provided at the lower edge of the extending plate.

  In the electronic piano device described above, for example, as shown in claim 9, one end of the printed board is inserted into an extending slot provided on the lower support frame, and the other end is on the main support frame. It is fixed in the keyboard screw hole.

  For example, as shown in claim 10, the above-mentioned electronic piano apparatus has a holder block near the white key slot in the recess on the rear side of the white key, and the holder block. Is above the upper support frame.

  Since the present invention is easy to understand how to attach and remove components, the electronic piano keyboard device and the electronic piano can be easily repaired. The parts are relatively independent and easy to replace with each other, and a shock absorber is reasonably installed to make the feel of the electronic piano keyboard device and the electronic piano keyboard feel like the feel of a traditional piano.

Explanatory drawing which shows the structure of the support frame of one Embodiment of this invention. Explanatory drawing which shows the position of the black key and white key of one Embodiment of this invention. Explanatory drawing which shows the keyboard structure of one Embodiment of this invention. Explanatory drawing which shows the normal state of the white key of one Embodiment of this invention. Explanatory drawing which shows the operating state of the white key of one Embodiment of this invention. Explanatory drawing of the normal state of the black key of one Embodiment of this invention. Explanatory drawing of the operating state of the black key of one Embodiment of this invention. Explanatory drawing which expanded the 1st arm of this invention and its local.

Hereinafter, an electronic piano keyboard device according to an embodiment of the present invention will be described with reference to the drawings.
The present invention is based on tests using a large amount of data, and mainly studies the tactile problem of the keyboard strongly. When pressing the keyboard, the resistance of the hand changes, and when the spring back, the feel of the hand due to the speed of the keyboard. Analyzing the changes in the sound, we analyzed the opinions of various people about the feel of the keyboard. Through a series of structural changes, the tactile feel of the electronic piano keyboard is made to be like that of a real piano.

  The electronic piano keyboard device of the present invention includes a main support frame (1), an upper support frame (2), as shown in FIG. 1, FIG. 2, FIG. 3, FIG. A lower support frame (3), a white key (22), a black key (23), an electrically conductive rubber (41), a printed circuit board (40), a first hook arm (33), and a second hook arm (34) are provided. The main support frame has a staircase structure. As the staircase structure, the first staircase (4), the second staircase (5), and the third staircase (6) are connected in order. The upper support frame (2) is located on the third step (6). The lower support frame (3) is located below the first step (4) and the second step (5). The white key (22) and the black key (23) are connected to the upper support frame (2) on the main support frame (1) and the upper support frame (2). The first hook arm (33) and the second hook arm (34) pass through the connecting portion between the first step (4) and the second step (5) and the lower support frame (3), and the white key (22) Connected with the black key (23). The electrically conductive rubber (41) is applied on the printed circuit board (40) and is located under the second step (5) and the third step (6). The first staircase (4) is connected to the forward extending plate (7), and the forward extending plate (7) includes an upper folding plate (46). The third step (6) extends downward and is connected to the plate (8). The forward extending plate (7) and the downward extending plate (8) have a screw hole (9) and a screw hole (9 '), respectively, for fixing the main support frame (1). The upper folding plate (46) of the front extension plate (7) has a protruding portion (17) supporting the white key (22), and the second step (5) supports the black key (23). There is a protruding part (18). The cap (43) envelops the protrusion (17), and the cap (44) envelops the protrusion (18). The upper support frame (2) is provided with a first convex plate (19) and a second convex plate (19 ′), and the rear side of the white key (22) is put on the first convex plate (19), so that The rear side of (23) is put on the second convex plate (19 ′). The first convex plate (19) has a first shaft hole (20), and a white key shaft (31) matching the first shaft hole (20) is provided behind the white key (22). The white key shaft (31) passes through the first shaft hole (20). The first spring plate (30) passes through the first convex plate (19). One end of the first spring plate (30) is located in the first upper support frame slot (28) and the other end of the white key support frame slot (29) behind the white key (22). Located inside. The second convex plate (19 ′) has a second shaft hole (20 ′), and a black key shaft (31 ′) that matches the second shaft hole (20 ′) is provided behind the black key (23). Have. The black key shaft (31 ') passes through the second shaft hole (20'). The second spring plate (30 ') passes through the second convex plate (19'). One end of the second spring plate (30 ') is located in the second upper support frame slot (28'), and the other end is a black key support frame slot (29 behind the black key (23)). ') Located inside. The first spring plate (30) and the second spring plate (30 ') serve to support the keyboard and prevent the keyboard from falling off. At the same time, a spring back force is generated, which can be offset with the weight of the keyboard itself. The first shaft hole (20) and the second shaft hole (20 ') are opened in the same direction as the keyboard, making it convenient to replace the keyboard.

  The first rod arm (33) is connected to the first rod hammer (35). The second rod arm (34) is connected to the second rod hammer (35 '). A first rectangular groove (39) is provided at the front end of the first saddle arm (33). A second rectangular groove (39 ') is provided at the front end of the second rod arm (34). The first scissors arm (33) and the first scissors hammer (35) are integrated with each other by injection molding techniques. The surface above the plastic front end has a slope (36), and the slope (36) connects the upper plate (37) and the lower plate (38) in a straight line by chamfering. The rectangular groove (39) is for storing lubricating oil, and sufficient lubricating oil can be used for a long time. A soft rubber gasket (42) with an arc is provided in the key route (24) and the key route (26) of the keyboard, and shock and noise can be buffered. In operation, the rubber gasket (42) forms an ideal state of motion with the surface on the heel to create a good keyboard feel. A shaft (45) is inserted into the front ends of the first rod arm (33) and the second rod arm (34), the shaft (45) passes through the shaft hole (11) of the lower support frame, and the first rod arm ( 33) and the second saddle arm (34) are rotatably supported by the shaft (45). The arm of the heel reciprocally swings in the main support frame (1) with the stainless steel shaft (45) in the shaft hole (11) of the lower support frame as the rotation axis by the pressure action of the black and white key routes. To do. The arm of the kite supports the key route of the keyboard, and the kite arm can support the key route of the keyboard upward by the weight of the kite hammer itself. For this reason, the keyboard has a tendency to move upward. The white key extending route (25) and the black key extending route (27) positioned on the keyboard key route and the key route cushion (14) provided at the front end of the main support frame interact with each other. When the keyboard is in the ready state, it is restored.

  The second staircase (5) is provided with a first shock absorber (12). A second shock absorber (13) is provided on the upper folding plate (46) of the forward extending plate (7). A third shock absorber (14) is provided under the upper folding plate (46) of the forward extending plate (7). A fourth shock absorber (15) is provided at adjacent edges of the lower extending plate (8) and the upper support frame extending plate (32). A fifth shock absorber (16) is provided under the downward extending plate (8). Shock absorbers with different thicknesses, hardnesses, and densities are made of cotton, for example, and can play a role of position limitation, vibration prevention, shock buffering, noise reduction, and the like. The fourth shock absorber (15) and the fifth shock absorber (16) imitate the feel between human fingers, the middle is dense, and both are flexible It has a multilayer structure. Therefore, the shock absorbing action against the shock of the heel arm is further increased.

  The electrically conductive rubber (41) is located on the PCB (40). One end of the PCB (40) is extended into an extension slot (21) provided on the lower support frame (3), and the other end is a keyboard screw hole (on the main support frame (1)). 10) is fixed. By having the continuous convex plate (47) at both ends of the electrically conductive rubber (41), the electrically conductive rubber is pressed between the PCB (40) and the main support frame (1). Therefore, the movement of the electrically conductive rubber can be prevented.

  A holder block (48) is provided near the white key slot (29) in the recess on the rear side of the white key (22), and the holder block (48) is provided on the upper support frame (48). 2) Located above.

  In the ready state, the rubber gasket (42) in the key root (24) of the white key and the rubber gasket (42 ') in the key root of the black key are It rests on the upper plate (37) on the upper surface. Both are connected to each other, and by the weight of the first hammer (35) and the second hammer (35 '), the front end of the arm of the helmet supports the white key (22) and the black key (23), There is a tendency to move them upward. However, the extension route (25) of the white key and the extension route (27) of the black key are restrained by the pressure of the cushion (14) of the key route of the keyboard and cannot move upward, and the keyboard is stationary. Keep it as it is. For example, when the keyboard is pressed by some external force, the rubber gasket (42) and the rubber gasket (42 ') of the key root of the keyboard are moved under pressure to move the arm and the keyboard. And move relative to each other. At that time, the keyboard rotates around the shaft hole at the center of the upper support frame, and the heel arm rotates around the shaft hole (11) at the center of the lower support frame. At the same time, a rubber gasket provided in the key route of the black key or the white key is moved from the upper plate (37) to the lower plate (37) along the slope (36) on the upper surface of the front end of the saddle arm. Slide to the limit of the keyboard in the direction of 38). If such a reciprocating motion is performed, the entire keyboard forms a systematic transmission mechanism. The self-weight of the spear hammer, a series of transmission movements, and the skillful combination of the spear arm and rubber gasket create a real piano-like hammer effect during operation, Finally, tell the human hand from the surface of the keyboard. At the same time, the electrically conductive rubber (41) under the keyboard reciprocates with the keyboard, and the two carbon particles in the electrically conductive rubber successively contact the carbon grid of the PCB (40). The circuit on the PCB (40) is energized. At the same time, the keyboard system activates scan software (scan soft) and finally realizes a tone similar to that of a piano.

  Based on the essence and spirit of the present invention, engineers in this area can implement the present invention from several modified methods. What has been described above is merely the preferred embodiment of the present invention, and does not limit the scope of the patent. All structural changes that are equivalent to this specification and the drawings are within the scope of the claims.

1: main support frame, 2: upper support frame, 3: lower support frame, 4: first step, 5: second step, 6: third step, 7: forward extending plate, 8: downward extending plate, 9: Screw hole, 10: Keyboard screw hole, 11: Shaft hole, 12: First shock absorber, 13: Second shock absorber, 14: Third shock absorber, 15 : Fourth shock absorber, 16: fifth shock absorber, 17: raised portion, 18: raised portion, 19: first raised stand, 20: first shaft hole, 21: slot , 22: white key, 23: black key, 24: key root, 25: white key extension root, 26: key root, 27: black key Out extending route, 28: first upper supporting frame of the slot, 29: white keys support frame of the slot, 30: first spring plate (spring plate)
31: Black key shaft, 32: Upper support frame extending plate, 33: First rod arm, 34: Second rod arm, 35: First rod hammer, 36: Slope, 37: Upper plate, 38: Lower plate, 39: Rectangular groove, 40: PCB, 41: Conductive rubber, 42: Rubber gasket
43: Cap, 44: Cap, 45: Shaft, 46: Upper folding plate, 47: Convex convex plate, 48: Holder block

Claims (10)

Main support frame (1), upper support frame (2), lower support frame (3), white key (22), black key (23), electrically conductive rubber (41), and printed circuit board (40) ), A first hook arm (33), and a second hook arm (34),
The main support frame has a first staircase (4), which is a staircase structure and connected in order, a second staircase (5), and a third staircase (6),
The upper support frame (2) is positioned on the third step (6), the lower support frame (3) is positioned below the first step (4) and the second step (5), and The white key (22) and the black key (23) are located on the main support frame (1) and the upper support frame (2) and are connected to the upper support frame (2).
The first saddle arm (33) and the second saddle arm (34) pass through the connecting portion of the first step (4) and the second step (5) and the lower support frame (3). Are connected to the white key (22) and the black key (23), respectively.
The keyboard of an electronic piano, wherein the electrically conductive rubber (41) is attached on the printed circuit board (40) and is located below the second step (5) and the third step (6). apparatus.   The first step (4) is connected to a front extension plate (7), the front extension plate (7) includes an upper folding plate (46), and the third step (6) is a lower extension plate ( The electronic piano keyboard device according to claim 1, wherein the electronic piano keyboard device is connected to 8).   The upper folding plate (46) of the front extension plate (7) has a first protrusion (17) that supports the white key (22), and the second step (5) The keyboard device for an electronic piano according to claim 2, further comprising a second protrusion (18) supporting the black key (23).   The electronic piano according to claim 3, wherein the first cap (43) encloses the first protruding portion (17) and the second cap (44) encloses the second protruding portion (18). Keyboard equipment.   A first convex plate (19) and a second convex plate (19 ') are provided on the upper support frame (2), and the rear side of the white key (22) is covered with the first convex plate (19), and the black key The electronic piano keyboard device according to claim 4, wherein the rear side of (23) is cut into the second convex plate (19 '). The first convex plate (19) has a first shaft hole (20), and a back side of the white key (22) has a white key shaft (31) that fits the first shaft hole (20). The white key shaft (31) passes through the first shaft hole (20),
The first spring plate (30) passes through the first convex plate (19), one end of the first spring plate (30) is located in the first upper support frame slot (28), and the other end is Located in the middle of the white key slot (29) behind the white key (22),
The second convex plate (19 ′) has a second shaft hole (20 ′), and a black key shaft (31 ′) that fits the second shaft hole (20 ′) behind the black key (23). ), The black key shaft (31 ′) passes through the second shaft hole (20 ′),
The second spring plate (30 ′) passes through the second convex plate (19 ′), and one end of the second spring plate (30 ′) is located in the second upper support frame slot (28 ′), 6. The electronic piano keyboard device according to claim 5, wherein the other end is located in a black key slot (29 ') behind the black key (23).   The first rod arm (33) is connected to the first rod hammer (35), the second rod arm (34) is connected to the second rod hammer (35 ′), and the first rod arm (33) is connected to the front end of the first rod arm (33). It has a rectangular groove (39), and has a second rectangular groove (39 ') at the front end of the second hook arm (34), and a front end of the first hook arm (33) and the second hook arm (34). A shaft (45) is fitted into the shaft, the shaft (45) passes through the shaft hole (11) of the lower support frame (3), and the first rod arm (33) and the second rod arm (34) 7. The electronic piano keyboard device according to claim 6, wherein (45) is rotatable.   A first shock absorber (12) is provided on the second step (5), and a second shock absorber (13) is provided on the upper folding plate (46) of the front extension plate (7). A third shock absorber (14) is provided under the upper folding plate (46) of the front extension plate (7), and is adjacent to the lower extension plate (8) and the upper support frame extension plate (32). Electron according to claim 7, characterized in that a fourth shock absorber (15) is provided at the mating edge and a fifth shock absorber (16) is provided at the lower edge of the lower extension plate (8). Piano keyboard equipment.   One end of the printed circuit board (40) is inserted into an extended slot (21) provided on the lower support frame (3), and the other end is a keyboard screw on the main support frame (1). 9. Electronic piano keyboard device according to claim 8, characterized in that it is fixed in the hole (10).   There is a holder block (48) near the white key slot (29) in the recess on the rear side of the white key (22), and the holder block (48) is on the upper support frame (2). The electronic piano keyboard device according to claim 1.

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