JPH0224145Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a vertical piano configured such that a keyboard section can be housed within an exterior main body to improve transportability.

[Prior art]

Conventionally, vertical pianos have been arranged so that the keyboard section can be stored inside the exterior main body, improving transportability and space efficiency during storage. It is known that the device is detachably or rotatably attached to the main plate 2 of the device.
In this case, the piano shown in the figure has a pair of fixing fittings 3,
4 and setscrew 5 to fix the arm 6 to the inner surface of the main board 2, and when storing, remove the setscrew 5 of one of the fixtures 3.
is removed, the keyboard section 1 is rotated downward using the rear end of the other fixture 4 as a rotation fulcrum, and is housed in the lower space within the exterior main body 7.

However, in the case of such conventional vertical pianos, it is necessary to remove the setscrews 5 of the fixing bracket 3 when storing or pulling out the keyboard section 1, which is troublesome and the screw holes in the main board 2 are not properly aligned. This tends to result in holes, making it impossible to stably fix the keyboard section 1. Therefore, as a means to solve this problem, it may be considered to embed the nut in the inner surface of the main plate, but this would increase the number of parts and make the assembly work complicated.

[Summary of the idea]

This idea was made in view of the above-mentioned points, and consists of disposing a keyboard section on the exterior body so that it can freely rotate in the vertical direction, and disposing a receiving plate spring on the inside surface of the exterior body to temporarily hold the keyboard section. A stay that is rotatably housed along the bottom surface of the keyboard and has a full length changing mechanism that expands and contracts in the longitudinal direction as it rotates is provided, and the lower end of this stay is attached to the frame. With an extremely simple structure in which the keyboard section is held in a playable state by being received by the stay receiving section, stability is good, there is no rattling, and the keyboard section can be stored easily and quickly. It provides a vertical piano.

This invention will be described in detail below based on embodiments shown in the drawings.

〔Example〕

Fig. 2 is a partially cutaway front view of the main parts showing an embodiment of the vertical piano according to this invention, Fig. 3 is a partially cutaway side view of the main parts, and Fig. 4 is an enlarged view showing the stay mounting structure. FIG. In these figures, a vertical piano 10 is composed of an exterior main body 11 and a keyboard section.

The exterior main body 11 includes a pair of left and right parent plates 13A,
13B, roof board 14, upper front board 15, lower front board 16,
It is formed into a box shape by a bottom plate 17 and the like, and a frame 18, a well-known action mechanism, strings (none of which are shown), etc. are housed inside.

The keyboard section 12 includes a shelf board 20, a pair of right and left arms 21A, 21B, a mouth bar 22, and a pair of left and right clappers 2.
3. Consists of a keyboard lid (not shown), etc., on the top surface of which a large number of keys 24 consisting of white keys and black keys are arranged in parallel in the side direction. And the keyboard section 12
is a support shaft 2 whose rear end is inserted into the exterior main body 11 and whose rear end is horizontal to the inner surfaces of the pair of parent plates 13A and 13B.
5, and is normally held substantially horizontally as shown by solid lines in FIG. 3 by a holding mechanism 30, which will be described later, and is set in a playable state.

The holding mechanism 30 includes stays 31 that are disposed below both edges of the keyboard section 12 and hold the keyboard section 12 from below, and a receiving plate spring 32 that temporarily holds the keyboard section 12.

The upper end of the stay 31 is rotatably connected to the lower surface of the keyboard section 12, and its structure will be described in detail with reference to FIG. This bracket 33 has a cylindrical body 3 having a screw hole 35.
4 is rotatably supported by a horizontal shaft 36. The screw hole 35 constitutes a full length changing mechanism that allows the stay 31 to expand and contract in the longitudinal direction by being screwed with a male screw provided on the outer circumferential surface of the upper end portion of the stay 31. The bracket 33 is rotatably held in a horizontal plane by a screw body 39 screwed into a screw hole 38 of a bracket mounting member 37 embedded in the lower surface of the shelf board 20. The lower end of the stay 31 is connected to the frame 18.
The keyboard section 12 is held approximately horizontally by being normally received by stay receivers 40 provided in a pair below both side edges of the keyboard section 12, and when the keyboard section 12 is stored, the keyboard section 12 is held as shown by the chain line in Fig. 2. like shelf board 20
It is configured to be folded along the lower surface of the shelf board and held by a holder 41 attached to the lower surface of the shelf board.

The receiving plate spring 32 has a lower end fixed to the inner surface of each main plate 13A, 13B, and an upper end fixed to the keyboard part 1.
Curved portion 32 that receives the lower side edge of No. 2 from below.
It has a integrally. In this case, the receiving plate spring 32 temporarily holds the keyboard section 12 until the keyboard section 12 is held by the stay 31.

A stopper 45 for regulating and preventing upward rotation of the keyboard section 12 is fixed to the inner surface of each of the main plates 13A, 13B.

When setting the keyboard section 12 to a playable state, the lower front plate 16 is opened forward, and when the keyboard section 12 is held by hand and rotated upward, it is temporarily held by the receiving plate spring 32. In this state, the stay 31 stored on the lower surface of the shelf board is pulled out, and its lower end is attached to the stay receiving part 40 of the frame 18. Thereafter, when the stay 31 is rotated to raise the cylinder 31, the keyboard section 12 is pushed up and comes into contact with the stopper 45, thereby completing the setting operation of the keyboard section 12. As a result, the keyboard section 12 is stably and reliably fixed at a predetermined height, and wobbling during performance is prevented.

When storing the keyboard part 12, rotate the stay 31 to remove its lower end from the stay receiving part 40 of the frame 18, and after storing the stay 31 on the lower surface of the shelf board, press the curved part 32a of the receiving plate spring 32 with your fingers. When pressed and elastically deformed, the keyboard section 12 is released from the receiving plate spring 32, so that it rotates downward about the support shaft 25 and is housed within the exterior main body 11.

In the above embodiment, a thread is formed on the outer peripheral surface of the upper end of the stay 31 as a mechanism for changing the overall length of the stay 31, and this male thread is screwed into the threaded hole of the cylinder 34. However, the cylindrical body 34 and the stay 31 may be connected by a connecting pin, and a turnbuckle may be provided in the middle of the stay 31. In short, any structure may be used as long as the length can be adjusted.

Furthermore, although the above embodiment has been described with reference to a case where it is applied to a general vertical piano, it goes without saying that it can also be applied to a vertical electric piano.

[Effect of idea]

As explained above, the vertical piano according to this invention has a keyboard part arranged on the exterior body so as to be freely rotatable in the vertical direction, and a receiving plate spring for temporarily holding the keyboard part on the inside surface of the exterior body. A stay with a length changing mechanism that expands and contracts in the longitudinal direction as the keyboard rotates is disposed on the lower surface of the keyboard, and the lower end of the stay is locked with a frame to set and maintain the keyboard in a playable state. Because of this structure, storing and pulling out the keyboard part is simple and easy, the keyboard part can be held stably and reliably, and when stored during transportation, the protruding dimension of the keyboard part is reduced, and the center of gravity is lowered, making it easier to transport. can be improved.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the main parts showing an example of a conventional vertical piano, Fig. 2 is a partially cutaway front view of the main parts showing an embodiment of this invention, and Fig. 3 is the main parts of the piano. FIG. 4 is a partially cutaway side view and an enlarged sectional view showing the mounting structure of the stay. 11...Exterior main body, 12...Keyboard section, 13A,
13B... Main plate, 18... Frame, 20... Shelf board, 24... Key, 30... Holding mechanism, 31... Stay, 32... Back plate spring, 35... Screw hole (full length changing mechanism) , 40...stay receiving part, 45...stopper.

Claims (1)

[Claims for Utility Model Registration] An exterior main body that accommodates a frame, a keyboard portion having a large number of keys and whose rear end is inserted into the exterior main body and supported so as to be rotatable in the vertical direction, and an upper end. is rotatably supported on the lower surface of the keyboard part, and its lower end is held by a stay receiving part provided on the frame to support the keyboard part in normal times, while when stored, the keyboard part a stay that is housed along the lower surface of the keyboard and has a full length changing mechanism that expands and contracts in the longitudinal direction as the keyboard is rotated; A vertical piano characterized by comprising: a catch plate spring that temporarily holds a keyboard part;