Abstract:
A keyboard apparatus capable of enhancing the return capability of hammer assemblies upon key release to improve the capability of repeated key striking and capable of reducing a height size of action units to make the keyboard apparatus compact. The keyboard apparatus includes hammer assemblies each having a butt disposed pivotable about a hammer pivot shaft and a hammer shank extending from the butt. In a non-key-depression state, the hammer shank obliquely extends downward. As viewed from side, a straight line passing though a gravity center position of the hammer assembly and the hammer pivot shaft forms an acute angle less than 45 degrees relative to a horizontal plane in the entirety of a key depression and key release stroke.
Abstract:
An upright piano type action has a wippen 30, a jack 40, a butt 5, a swinging shank (hammer shank 71), a swinging member (hammer 70), a catcher shank 53, a backcheck 60 and a catcher 52. To any of the moving members, namely the butt 5, the swinging shank (hammer shank 71), the swinging member (hammer 70), the catcher 52 and the catcher shank 53, a weight 110, 120, 130 or 140 is attached. The weights 110, 120, 130, 140 are placed to apply loads, respectively, in a state where a key is not being depressed, in a direction opposite to a direction in which the moving members swing for hitting.
Abstract:
A syringe holding structure includes an adapter case (40) for holding a small-diameter syringe, and a syringe holding member having a flange-receiving groove (77) for holing flange portion (46) of the case(40). The syringe holding structure further includes locking mechanism for fixing the flange portion (46) in the groove (77) when the flange portion is inserted into flange-receiving groove and then it is rotated by 90 degrees about its axis.
Abstract:
An upright piano type action has a wippen 30, a jack 40, a butt 5, a swinging shank (hammer shank 71), a swinging member (hammer 70), a catcher shank 53, a backcheck 60 and a catcher 52. To any of the moving members, namely the butt 5, the swinging shank (hammer shank 71), the swinging member (hammer 70), the catcher 52 and the catcher shank 53, a weight 110, 120, 130 or 140 is attached. The weights 110, 120, 130, 140 are placed to apply loads, respectively, in a state where a key is not being depressed, in a direction opposite to a direction in which the moving members swing for hitting.
Abstract:
A keyboard apparatus capable of being easily designed to have action units whose upper end positions are made low and whose efficiency of drive of whippens is increased. Each of keys of the keyboard apparatus has an upper front part, a bent part extending downward from a rear end of the upper front part, and a lower rear part extending rearward from a lower end of the bent part. An upper surface of a rear end portion of the lower rear part nearly horizontally extends at a height position lower than that of a key fulcrum. Action units are disposed above respective ones of rear end portions of the keys. A driven point of a whippen of each action unit is located at a position lower than the key fulcrum in a non-key-depression state.
Abstract:
A lever 40 is supported by a lever supporting portion 41. The lever 40 is urged by a spring 45. A friction producing member 47 is in contact with a pivot restricting member 46 which is interlocked with the lever 40 to produce a frictional force in a direction opposite to the direction in which the lever 40 pivots. Such a configuration allows a pedal apparatus to exhibit hysteresis in characteristics of the amount of depression of the lever 40 and reaction force.
Abstract:
A lever 40 is supported by a lever supporting portion 41. Through a first pivoting member 52, the lever 40 is urged by a reaction force stabilization spring 54, a first spring 55 and a second spring 56. The downward displacement of a second pivoting member 53 is restricted by a fixed supporting member FR. If the urging force of the first spring 55 exceeds the urging force of the second spring 56, the second pivoting member 53 is displaced upward. A contact member which is in contact with the first pivoting member 52 and the second pivoting member 53 to produce friction force is also provided.
Abstract:
A lever 40 is supported by a lever supporting portion 41. The lever 40 is urged by a first spring 45 and a second spring 46. The urging force of the first spring 45 varies over the entire operational range of the lever 40. The second spring 46 and a third spring 47 are provided serially through a movable supporting member 48. The displacement of the movable supporting member 48 is restricted by a fixed supporting member FR. If the urging force of the second spring 46 exceeds the urging force of the third spring 47, the restriction on the displacement of the movable supporting member 48 is removed. Therefore, the present invention provides a player with feeling similar to that the player perceives when he manipulates a damper pedal of an acoustic piano.
Abstract:
An electronic keyboard musical instrument has a load applier, which gives rise to inner force sense equivalent to another musical instrument such as a piano in the player through black keys and white keys, and the load applier has a mechanical load applier applying a part of load to the keys and an electromechanical load applier applying a remaining part of load to the keys so that the manufacturer can reduce the actuator in size.
Abstract:
A pedaling aid is combined with an acoustic piano, and assists a physically handicapped person in performing a piece of music on the acoustic piano; the pedaling aid includes a human interface, a pedal actuator and a controller, and the pedal actuator is equipped with a locator and a coupling device; a user moves the pedal actuator in the vicinity of the acoustic piano, and couples the pedal actuator to the acoustic piano at a proper position with the assistance of the locator and coupling device; while the physically handicapped person is fingering on the acoustic piano, the human interface is kept around the head so that the physically handicapped person manipulates the human interface with the chin, mouth, teeth or tongue; since the human interface produces a signal representative of a target position, the controller makes the pedal actuator to move the pedal to the target position.