JPS63135998A - Controller for automatically performing piano - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a controller device for a player piano, and more specifically, to a player piano that allows piano performance to be performed automatically by an electric drive means. The present invention relates to an improvement in a controller device that electrically controls a drive means.

(Prior Art) As a conventional controller device for a player piano, the one described in, for example, Japanese Utility Model Application Publication No. 56-5190 as shown in the fourth country is known.

This is a Porcessor type (stationary type) automatic piano performance device, and in the figure, an electromagnetic plunger unit 3 is detachably attached to the clapboard of a piano 1, and the unit 3 and a data recorder 5 are electrically connected. It is something. This data recorder 5 is formed of a box-shaped case and is integrally constructed with an electromagnetic plunger unit 3, which is supported by a post 7.

To attach this device to the piano, you need to use the case (
Electromagnetic plunger unit: 3 integrated with recorder 5),
The unit 3 is placed facing the piano 1 from the front side thereof, and the tip of the plunger of the unit 3 is made to hang down toward the keyboard.

(Problem to be Solved by the Invention) However, in such conventional player piano controller devices, the case containing the data recorder is integrally formed with the electromagnetic plunger unit, and it cannot be attached to the piano. As a result, it was not easy to install the device on the piano and adjust the installation.
Also, sometimes the keyboard is mounted on a post, making it difficult to see the keyboard.
Furthermore, when performing a Koyoro piano, the player must remove not only the electromagnetic plunger unit but also the data recorder case, which also has various problems in that it spoils the aesthetic appearance of the piano. Ta.

(Means for Solving the Problems) Therefore, the present invention provides a drive means that is detachably provided on the piano body and operates the key action mechanism, and an electric drive means that operates the drive means based on key depression information. In a controller device for a player piano, which includes a controller that enables automatic performance by controlling the controller, and a power supply means that generates a predetermined voltage to the drive means, the controller and the power supply means are connected to the chair of the piano. It is an object of the present invention to solve the above-mentioned problems by providing an internally housed controller device for a player piano.

(Operations and Effects) In the controller device for a player piano according to the present invention, since the controller and the power supply means are housed inside the piano chair, that is, the drive means and the controller are separate bodies. The installation of the device on the piano and its installation can be done easily because the keyboard can be seen from the front, and the player only has to remove the drive means when playing. Furthermore, it is extremely useful because there is no need to prepare or use a separate piano chair.

Furthermore, since the controller and the like are housed and folded inside the chair, the exterior design of the piano can also be improved.

(Example) Embodiments of the present invention will be described below based on the drawings.

1 to 3 show an embodiment of the present invention.

According to these figures, an upright piano body 21
The driving means 25 (key drive unit) installed above the keyboard 23 has, for example, a plurality of electromagnetic plungers, and electrically drives the plungers to press each key and activate a key action mechanism (not shown). ) to work. The drive means 25 has a substantially rectangular parallelepiped shape, and both longitudinal ends thereof are suspended and supported by a pair of support members 27 . Each of the support members 27 is rotatably connected to a vertical member 31 by a hinge 29, and the vertical member 31 is fixed and erected in front of the clapboard 33 of the keyboard portion (FIG. 2). Note that a hinge 35 is provided at the lower end of the vertical member 31 by one inch, and the vertical member 31 is supported rotatably around the hinge 35.

A controller 37 that electrically controls the driving means 25 based on key press information from the outside is housed inside a piano chair 39, and is connected to the driving means 2 by a connecting cable 41.
5. Inside the chair 39, a power supply unit 43 serving as a power supply means and a pedal drive solenoid 45 are housed and arranged at predetermined positions, respectively. Further, these power supply unit 43 and solenoid 45 are also connected to the controller 37. The pedal drive solenoid 45 drives the pedal 47 of the piano 21 and is disposed at the lower end of the chair 39, and is also attached to a bridge portion 49 formed on the chair 39 so that the tip of the plunger can be seen from the front. .

Further, as shown in FIG. 2, an L-shaped positioning fitting 51 is attached to the lower end of the rear plate of the chair 39.
1 is height-adjustable and is adjusted to the height of the lower end surface of the piano body 21, and when installed, the metal fitting 51 engages with the lower end surface of the piano body 21, thereby determining the relative position of the piano body 21 and the chair 39. is doing.

In the figure, 53 indicates casters of the chair 39, and 55 indicates casters of the piano body 21.

Therefore, in order to install this controller device on the piano main body 21, as shown in A in FIG. Arrange it so that it aligns with the Further, the chair 39 is installed at a predetermined position below the keyboard section using a metal fitting 51. Further, the tip of the plunger of the pedal drive solenoid 45 is connected to the pedal 4.
7 so as to be able to come into contact with it.

In this case, the drive means 25 is supported by the support member 27 only at both longitudinal ends thereof, and the chair 3
Since the notch-shaped bridge portion 49 is formed in each of the parts 9, it is easy to visually recognize the parts, and the installation and positioning thereof are extremely simple.

Furthermore, the driving means 25 is a chair 3 with a built-in controller 37.
9 and are connected by a flexible cable 41, the degree of freedom in installation is increased and the work is easy from this point of view as well.

Also, the driving means 25 is set to 1! To remove it from the panel, rotate it 90 degrees together with the support member 27 about the hinge 29 to the position shown in B in FIG. , rotate. In other words, it is stored in close contact with the underside of the keyboard section. Of course, in this case, the lower surface is provided with a supporting member, such as a locking metal fitting.

As a result, not only the removal of the driving means 25 but also its storage becomes simple and easy.
Since the user can immediately sit on the chair 39 and play by simply pulling out the connector 1, the controller device is useful as an extremely simple controller device. In other words, it is convenient because there is no need to carry the data recorder to a location where it will not get in the way, unlike in the past.

Furthermore, the present invention can also be used for grand pianos, and in either case, no problem arises in terms of the external design.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a controller device for a player piano according to the present invention, FIG. 2 is a side view of the embodiment, and FIG. 3 is a front view of a chair according to the embodiment. FIG. 4 is a partially sectional side view showing a conventional automatic piano performance device. 21...Piano body, 25...Driving means, 39...Chair, 43...Power supply unit (power supply means). Patent applicant Nippon Musical Instrument Manufacturing Co., Ltd. Representative Patent Attorney (8917) Kiyoshi Kuwai-0Φ Fig. 1 Perspective view of the first embodiment Fig. 2 @ side view of the first embodiment Fig. 3 Front view of 4 children of the first embodiment figure

Claims (1)

[Scope of Claims] A drive means that is removably attached to the piano body and operates the key action mechanism thereof, and a controller that enables automatic performance by electrically controlling the drive means based on key press information. and a power supply means for generating a predetermined voltage to the drive means, a controller device for a player piano, characterized in that the controller and the power supply means are housed inside a chair for the piano. controller device.