38results about "Pianos" patented technology

To improve bonding strength of a key that is made by bonding wood and resin materials.SOLUTION: A key for a keyboard device comprises: a wooden key body; a resin-made key upper surface portion provided on the upper surface of the key body; an adhesive for bonding the key body and the key upper surface portion. And a recess is formed on the lower surface of the key upper surface portion, and recess and convex shapes are formed in the interior of the recess. A diameter of the recess is 20 μm or more and 500 μm or less, and a height difference of at least part of the recess and convex shapes may be 20 μm or more.SELECTED DRAWING: Figure 3

To provide a small keyboard instrument in which a keyboard part can satisfactorily be assembled in a musical instrument case.SOLUTION: A keyboard instrument 10 includes; a musical instrument case 200 having a front plate 210, a shelf plate 220, and a connection member 201 which mutually fixes the front plate 210 and the shelf plate 220 and includes a hook part 201c protruding toward a back side B of a longitudinal direction (cross direction FB) of keys; and a keyboard part 50 which has a locking plate 510 as a locking part and is fixed to the musical instrument case 200 in a state in which the locking plate 510 is arranged between the hook part 201c and the shelf plate 220.SELECTED DRAWING: Figure 2

A hybrid acoustic piano, specifically a piano the wires whereof are struck, of the type comprising a plurality of grouped wires, where of each group of three (1a, 1b, 1c) or of four (1a, 1b, 1c, 1d) wires associated with a key, one of these (1a) is tuned at a pitch different from the other two or three, which are tuned identically; and where the mechanism (4) is such that when the pedal is in a resting state, that is, without depressing the pedal, on pressing the keys, the hammers (3) strike at least two wires (1a, 1b) of the three (1a, 1b, 1c) or of the four (1a, 1b, 1c, 1d) wires of each group with the same tuning, and when the pedal is depressed, the mechanism (4) displaces the hammers (3) to the right and, on pressing the keys, three wires are struck, one of which is the wire (1a) tuned at a different pitch from the others.

The grand piano linkage device convenient to adjust comprises a base, a staple bolt seat, a compound vibration rod, an ejector rod, a compound vibration torsion spring and an installation seat, the base comprises a base transverse rod and a base vertical rod, the middle section of the base vertical rod protrudes to form a base positioning part, the first end of the compound vibration rod is rotationally connected with the upper end of the base vertical rod through a pin shaft, and the second end of the compound vibration rod is rotationally connected with the upper end of the base vertical rod through a pin shaft. A torsion spring adjusting screw hole is formed in the position, close to the first end of the compound vibration rod, of the compound vibration rod, the torsion spring adjusting screw is installed in the torsion spring adjusting screw hole, the compound vibration rod adjusting screw penetrates through a compound vibration rod adjusting through hole in the compound vibration rod and then is connected with a corresponding screw hole in the base positioning part, and two torsion arms of the compound vibration torsion spring comprise the long torsion arm and the short torsion arm. The short torsion arm is arranged in a positioning groove in the compound vibration rod, and the suspended end of the short torsion arm makes contact with the end of the torsion spring adjusting screw. The size of the linkage device is reduced, normal work of other parts is facilitated, the swing resistance of the compound vibration rod and the resistance of pressing the keys are reduced, and the torsion of the compound vibration torsion spring can be adjusted.

The present invention discloses an upright piano lock, comprising a lock cylinder (1), a lock seat (2), a key (3) and a lock plate (4); the lock seat (2) is embedded in a keyboard cover (5); in an unlocked state, the lock tongue (7) is retracted in the lock seat (2) and positioned in an unlocked position by a spring sheet (8); in a locked state, the front end of the key (3) is turned a second time and the lock cylinder (1) is pushed to move laterally so that the lock tongue (7) is engaged with a lock door stop (6) and positioned in a locked position by a spring sheet (8). The piano lock adds a lock plate to replace a fixing frame, a cover plate, a latch, a torsion spring and an elastic block, adds a locking structure in the lock seat and directly adds a spring sheet to the lock seat, so that the spring sheet always provides an outward elastic force to the lock tongue to position the lock tongue, and the structure is simpler and can be installed in a lock door stop with a smaller height.

A vibration plate for a musical instrument includes: a plate-shaped vibration plate main body that has a deformation anisotropy property; a first elongated reinforcing member disposed on a first face of the vibration plate main body, and that projects outwardly from the first face and extends along the first face in a direction that prevents the vibration plate main body from deforming; and a second elongated reinforcing member disposed on a second face of the vibration plate main body, and that projects outwardly from the second face and extends along the second face in the direction that prevents the vibration plate main body from deforming. As viewed from a thickness direction of the vibration plate main body, at least part of the first elongated reinforcing member overlaps with at least part of the second elongated reinforcing member.

The utility model relates to the technical field of pianos, and discloses a harmonica ring structure of a triangular harmonica, which comprises an inner harmonica ring and an outer harmonica ring, the outer harmonica ring comprises an outer ring outer side plate, an outer ring inner side plate and a lamp panel, the outer ring outer side plate is connected with the outer ring inner side plate, and the lamp panel is connected with the outer ring inner side plate. The outer ring outer side plate and the outer ring inner side plate are arranged on the outer ring outer side plate, a lamp groove used for installing the lamp panel is formed between the outer ring outer side plate and the outer ring inner side plate, the lamp groove extends to the bottom of the outer ring of the guitar, the sealing plate is detachably connected to the bottom of the outer ring of the guitar, the bottom of the lamp panel abuts against the sealing plate, and the outer ring outer side plate is provided with a light-transmitting hollow part; the lamp panel can be quickly taken out from the lamp groove, the lamp panel is convenient to disassemble and maintain, normal use and the overall appearance of the triangular musical instrument are not affected, and the lamp panel is matched with the light-transmitting hollow part on the outer side plate of the outer ring, so that the light emitting effect is good.

Permanently installed music stand on pianos and grand pianos, made of Plexiglas (acrylic glass) contoured in shape, cut out and polished, e.g. width approx. 800 mm, height approx. 250 mm, thickness 4 mm, 6 mm, 8 mm, 10 mm. In many different contoured shapes and sizes. With various representations, e.g., a lyre

The technical problem to be solved by the present invention is to improve the bonding strength between wood and a resin material in a bond for bonding the wood and the resin material. A key for a keyboard device is provided with a wood key body part, a resin key upper surface part provided on the upper surface of the key body part, and an adhesive for bonding the key body part and the key upper surface part, a recess is provided on the lower surface of the key upper surface part, and a concave-convex shape is further formed inside the recess. The diameter of the recesses is 20 [mu] m or more and 500 [mu] m or less, and the height difference of at least a part of the uneven shape is 20 [mu] m or more.

A transportable stringed keyboard instrument includes a lightweight sound-body formed of several layers with front plate and back plate of material of high modulus of elasticity like steel or higher, with a side plate of a material of high modulus of elasticity like steel or higher, bonded to various layers between front plate and back plate. A method of forming a lightweight sound-body includes a single press procedure, wherein the sound-body is formed with bending in opposite direction compared to bending forces due to the string load. An upright piano action is optimized for space reduction so that keys can be positioned closer to the strings and a rotatable action together with the keys form a separate unit for transportation, apart from the sound-body.

To provide an auxiliary music stand and an auxiliary music stand set that can be easily fixed to a grand piano in a short time and is also in a compact shape for easy storage.SOLUTION: An auxiliary music stand 50 has: a music score reception plate 10 which can receive the back of a music score on a music score reception surface 11 on the front side; a music score support part 21a which is provided at the lower end of the music score reception plate 10 to protrude from the music score reception surface 11, and can support the lower end of the music score; and a holding part 30 which is provided on the back 12 of the music score reception plate 10, and holds a plate-like structure on its inner side to fit the music score reception plate 10 to the plate-like fixed body.SELECTED DRAWING: Figure 7

The present application concerns to grand pianos damper system in which the damper wire block is horizontally rotating, an innovative feature to accomplish "damper head to strings" regulation quickly and very precisely. The present invention aims to solve the deficiencies and difficulties imposed by the state of the art regarding the finalization of the adjustment of the grand piano dampers. The purpose of this constructive idea is to make independent the last adjustment, which is the correction of the rotational motion of the damper head, caused after definitive tightening of the screw securing the wire inside the block. The innovations proposed so far offer complexity in the constructive model and remarkable operational difficulty, reasons why they have presumably never been put into practice.

To provide a piano with drop action which prevents lifting up and twisting of a first key near a balance pin hole when a key is depressed, and ensures stable and smooth operation of the first key and a second key when the piano has the upper first key and the lower second key.SOLUTION: A piano 1 includes: upper first keys 2A which are freely rotatably supported by balance pins 6a through balance pin holes at a rear end part, and are depressed by a player; a lower second key 2B which is freely rotatably supported in a center part and on which the first keys abut at a front end part; an action 3 which has a wippen 21 which is arranged below the second key 2B, drives a hammer 4 by upward rotation and strikes strings; a wire 33 which lifts the wippen 21 when the first key is depressed; and a keyboard presser 51W for white keys and a keyboard presser 51B for black keys which contact pin rear parts of the first keys from upward and prevent lifting of the first keys near the balance pin holes to a degree that the first keys are not twisted when the keys are depressed.SELECTED DRAWING: Figure 1

The invention discloses a piano system with a real-time variable damping function in the technical field of piano parts, and aims to solve the problems that an electronic piano is single in touch feeling and a mechanical piano is fixed in damping. The system comprises a main control module, a sensing detection module, a power amplifier driving module and a mechanical structure module, all the modules are integrally installed in a shell, the mechanical structure module comprises a key and a permanent magnet fixed to the key, the magnetic pole direction of the permanent magnet is perpendicular to the motion direction of the key, the sensing detection module is connected with the key, and the power amplifier driving module is connected with the key. And the power amplifier driving module is used for detecting displacement information of the key, is provided with an electromagnetic coil which is arranged corresponding to the permanent magnet and is overlapped with the permanent magnet in axis, and can drive the mechanical structure module. Through interaction of dynamic magnetic fields of the electromagnetic coil and the permanent magnet, the damping force can be adjusted in real time according to the motion state of the keys, the dynamic touch change of a traditional mechanical piano from soft touch to heavy compaction is accurately simulated, and the defects that an existing electronic piano is single in touch and the damping of the mechanical piano is fixed are overcome.

A hammer return spring rail (10) for an upright piano, the hammer return spring rail comprising: at least one cavity (15) for receiving at least one rod (20); and a plurality of open compartments (25) each configured to receive a hammer return spring (30), each spring (30) containing a coil (35), and each compartment (25) allowing the hammer return spring (30) to extend outwardly from the compartment in a generally downward direction; each compartment (25) comprises a slot (45) for receiving an extension (40) of each hammer return spring (30); and each compartment contains an aperture (50) for receiving an adjustment member (55) such that by adjusting the extent to which the adjustment member (55) is inserted into the aperture (50), the pressure applied to the extension (40) of the spring (30) can be increased or reduced, thereby increasing or reducing the force applied by the spring (30) on the corresponding hammer seat (60).

The present invention relates to the field of musical instruments, and more specifically to a collapsible digital piano. A piano structure is formed through the adjustment and interlocking of parts, facilitating assembly and disassembly while allowing for the simple and effective fitting of accessories. It also enables the use thereof for aesthetic stage set purposes.

To provide a piano with a drop action that can ensure good action operation, reduce length of keys, and compact depth of the piano.SOLUTION: A piano 1 with a drop action comprises: a first key 2A that extends in the front-back direction, is rotatably supported at the rear end, and is operated by the player; a second key 2B that is located below the first key 2A, rotatably supported in the center, and is in contact with the first key 2A at the front end; an action 3 that is located behind and below the first key 2A and the second key 2B, and has a wippen 21 for driving a hammer 4 by upward rotation to strike a string; and a connecting material (wire 13) that is connected to the rear end of the second key 2B and the wippen 21, and lifts and causes the wippen 21 to rotate upward, in accordance with the rear end of the second key 2B rotating upward corresponding to pressing the first key 2A.SELECTED DRAWING: Figure 1

Systems, methods, and devices for improving the mechanisms of musical instruments, including pianos and similar musical instruments, by integrating compliant mechanisms, improving or preferably materials, and improving or preferably manufacturing processes. The device may include a damper underlying lever. The damper underlying lever may include a plurality of rigid links. The rigid link may include a damper shaft bracket, a damper lever connected to the damper shaft bracket by a first rotational connection, and a damper stop connected to the damper lever by a second rotational connection. The damper underlying lever may also include a first compliant structure that provides rotational movement between the at least two rigid links.

To provide a keyboard device for a keyboard instrument, which, compared to a grand piano, reduces the number of components and adjustment points, thereby enabling improvement of productivity and maintainability and also obtainment of a favorable back check function.SOLUTION: A keyboard device for a keyboard instrument comprises: a key 2 that extends in a front-rear direction and freely swings; an action unit 6 that performs a predetermined operation in response to depression of the key 2; and a hammer 5 that is rotatably supported via a hammer support shaft 33 on a hammer support 4, and is driven upward via the action unit 6 as the key 2 is depressed. The hammer 5 includes a back check engagement part 47 that protrudes downward in front of the hammer support shaft 33. The key 2 is provided with a back check 62 that stops the hammer 5 by engagement of the back check engagement part 47 when the hammer 5 rebounds and rotates downward.SELECTED DRAWING: Figure 1

The utility model relates to the field of vertical pianos, and discloses a vertical piano rear key cover fixing structure which comprises a rear key cover body and a side plate, a hinge is arranged on the outer surface of the rear key cover body, a fixing frame is fixedly installed at the bottom of the rear key cover body, a first magnetic plate is fixedly connected to the inner top wall of the fixing frame, and a second magnetic plate is fixedly connected to the inner top wall of the fixing frame. A second magnetic plate is movably connected to the inner wall of the fixing frame, a connecting rope is fixedly installed at the bottom of the second magnetic plate, a first magnetic block is connected to one end of the connecting rope, a clamping groove is formed in one side of the side plate, and a second magnetic block is fixedly installed on the inner wall of the clamping groove. According to the utility model, by utilizing the attraction force between the first magnetic plate and the second magnetic plate and between the second magnetic block and the first magnetic block, the stability of the insertion of the first magnetic block is ensured, the stability of the movable connection between the rear key cover body and the side plate is further ensured, on the contrary, the first magnetic block can be conveniently taken out from the clamping groove, and the rear key cover body can be conveniently and rapidly disassembled.

A hybrid acoustic piano, specifically a piano the wires whereof are struck, of the type including a grouped wires, where of each group of three or of four wires associated with a key, one of these is tuned at a pitch different from the other two or three, which are tuned identically; and where the mechanism is such that when the pedal is in a resting state, that is, without depressing the pedal, on pressing the keys, the hammers strike at least two wires of the three or of the four wires of each group with the same tuning, and when the pedal is depressed, the mechanism displaces the hammers to the right and, on pressing the keys, three wires are struck, one of which is the wire tuned at a different pitch from the others.

To secure musical instruments to a floor while enhancing acoustic effects.SOLUTION: A musical instrument fixture 10 comprises: a directional support plate 13 formed from a plate that is either square or square with rounded corners; and a non-adhesive low-rebound portion 21 covering the underside of the directional support plate 13, an outer edge thereof, and an area near the outer edge on a top surface. The fixture is adhered to a floor surface with square corners 15 facing audiences to secure a musical instrument.SELECTED DRAWING: Figure 1

A music rack unit-mounting structure of a grand piano, for removably mounting a music rack unit on a piano body of the grand piano. Rear ends of a left-side engagement portion and a right-side engagement portion are configured to be capable of being placed on front ends of a left-side guide portion and a right-side guide portion from above, respectively, when the music rack unit is mounted on the piano body from the front. By sliding the music rack unit rearward from the placed state, the music rack unit is mounted on the piano body, while the left-side engagement portion and the right-side engagement portion are fitted on or in the left-side guide portion and the right-side guide portion, respectively.

A hammer return spring rail (10) for an upright piano including: at least one cavity (15) for receiving at least one rod (20); and a plurality of open compartments (25) each configured to receive a hammer return spring (30), each spring (30) including a coil (35), and each compartment (25) allowing the hammer return spring (30) to extend outward therefrom in a generally downward direction; each compartment (25) including a slot (45) for receiving an extension (40) of each hammer return spring (30); and each compartment including an aperture (50) for receiving an adjusting means (55) such that, by adjusting the degree to which the adjusting means (55) are inserted into the aperture (50), pressure applied to the extension (40) of the spring (30) can be increased or decreased, thereby causing an increase or decrease of the force exerted by the spring (30) on a corresponding hammer butt (60).

To provide an auxiliary music stand and an auxiliary music stand set that can be easily fixed to a grand piano in a short time and is also in a compact shape for easy storage.SOLUTION: An auxiliary music stand 50 has: a music score reception plate 10 which can receive the back of a music score on a music score reception surface 11 on the front side; a music score support part 21a which is provided at the lower end of the music score reception plate 10 to protrude from the music score reception surface 11, and can support the lower end of the music score; and a holding part 30 which is provided on the back 12 of the music score reception plate 10, and holds a plate-like structure on its inner side to fit the music score reception plate 10 to the plate-like fixed body.SELECTED DRAWING: Figure 7

A hammer return spring rail (10) for an upright piano including: at least one cavity (15) for receiving at least one rod (20); and a plurality of open compartments (25) each configured to receive a hammer return spring (30), each spring (30) including a coil (35), and each compartment (25) allowing the hammer return spring (30) to extend outward therefrom in a generally downward direction; each compartment (25) including a slot (45) for receiving an extension (40) of each hammer return spring (30); and each compartment including an aperture (50) for receiving an adjusting means (55) such that, by adjusting the degree to which the adjusting means (55) are inserted into the aperture (50), pressure applied to the extension (40) of the spring (30) can be increased or decreased, thereby causing an increase or decrease of the force exerted by the spring (30) on a corresponding hammer butt (60).

A key for a keyboard apparatus according to an embodiment of the present disclosure, the key includes: a key body portion made of wood; a key upper surface portion made of resin positioned on an upper surface of the key body portion; and an adhesive material bonding the key body portion and the key upper surface portion, wherein a lower surface of the key upper surface portion includes a recess portion including a plurality of recesses, wherein each recess has an uneven shape.