JP2005106842A - Front lid opening/closing remote controller for grand piano and system with cover pinching prevention - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system provided with a device having a function freely regulatable by operation of an electric system controller and an auxiliary device for preventing a cover from being pinched in an aperture in opening and closing a front lid of a grand piano as the opening and closing of the front lid to be carried out by a child or a weak female take a lot of trouble and entail an extreme danger. <P>SOLUTION: A gliding roller (1) is utilized for a contact portion with the front lid at the tip of a pantograph type variably movable (2) support (9) and an attachable and detachable rail (3) by a double coated adhesive tape is attached to the contact portion at the back of the front lid. The contact portion works on the rail to open and close the front lid. The front lid is otherwise opened and closed by a rubber roller without the rail. The cover is pressed to fittings (4) fixed to pinch the board thickness of the front lid to an open side (10) of the front lid aperture of the piano so as not to suspend to an inner side. The pinching is thereby prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed description of the invention

Industrial application fields

The device is installed on the outer shell of the grand piano, and the piano canopy can be opened and closed electrically, and the opening range can be adjusted freely by operating the remote controller and wired controller. The present invention relates to an auxiliary tool for preventing pinching in an opening.

Conventionally, when opening and closing the canopy of a grand piano, a user folds up the cover and opens and closes the heavy canopy with his / her hand.

When opening the canopy of the grand piano, the user must set the opening range by moving the opening up and down by selecting two support columns with different dimensions by supporting one side fulcrum installed in the piano housing and selecting the contact part. I went with confidence.

Problems that the device tries to solve

However, such an opening and closing method is laborious and extremely dangerous for children and powerless women.

Also, due to the degree of freedom of the opening range, if you close it, the volume is sufficient, the delicate tone of the keyboard touch is difficult to understand, and it becomes a performer with poor expressiveness. In practice, it will affect the surrounding housing environment. For this reason, there are many situations in which the canopy cannot be opened and there is inconvenience and there is no choice but to practice.

In order to solve the above-mentioned problems, the present invention provides a function that allows the opening range to be freely selected according to the usage environment and preference, and allows the volume of the piano to be freely adjusted. The purpose is to prevent the cover from being caught by the effect of the tool.

Means for solving the problem

The invention according to claim 1, which has been made to achieve the above object, uses a sliding roller (1) at the tip of the pantograph type movable movable support (FIG. 3) and the contact portion with the canopy, and the contact portion on the back surface of the canopy. Is attached with a detachable rail (3) by double-sided tape. Open or close by using the contact part on the rail, or use a rubber roller without the rail.

Further, the invention described in claim 2 is an auxiliary tool (FIG. 5) of the piano opening device according to claim 1, which has a structure in which the auxiliary tool is attached more firmly by the weight of the piano cover itself, and the closing operation is performed. It has a function to prevent the cover from being caught.

Action and effect of device

In the piano canopy opening device according to claim 1 configured as described above, the opening area can be freely set according to the stop position of the pantograph-type operation column (FIG. 3), and the volume sound quality can be adjusted by the user. Optional.

Further, in the piano cover pinching prevention device according to claim 2 (FIG. 5), the piano cover can be perpendicular to the metal fitting (4) fixed by sandwiching the plate thickness of the canopy into the opening (10) on the piano canopy opening side. The support bar (5) attached to the cover is pressed so as not to hang the cover inward to prevent pinching.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 is an operation drawing of the mounting position of the opening / closing mechanism and the opening / closing state of this embodiment.

As shown in FIG. 2, the grand piano according to the present embodiment includes a support bar operating device that moves up and down by a user operating a controller at hand, and a cover pinching prevention device.

A rail (3) for receiving the tip roller (1) of the pantograph-type movable support column (FIG. 3) is installed in front of the canopy of the grand piano, parallel to the hinge of the musical score portion opening. A pantograph-type movable support is installed just in front of the existing support bar to support the most stable fulcrum (existing support point) of the canopy weight.

This pantograph-type movable support column (FIG. 3) does not interfere with the role of the existing support column and can also serve as a support column.

The auxiliary equipment attached to this is firmly fixed without damaging the piano canopy. When the piano canopy is opened, the piano cover is suspended, so that it does not cause trouble such as being caught when the canopy is opened and closed. A structure that does not interfere with

To adjust the opening range, the vertical movement can be changed by operating the dedicated remote controller.
This controller can be operated in the upper and lower systems, and the main power source is attached to the power cord coming out of the main unit.

Parts that can be improved on use

The guide rail (3) becomes unnecessary by changing the roller (1) at the tip of the pantograph type movable support column for opening the canopy to a rubber roller.

The variable motion of the pantograph type movable support column for opening the canopy can be changed from the wire winch of FIG. 2A to the screw type of FIG. 2B or the hydraulic type of FIG. 2C.

The auxiliary tool for preventing pinching of the cover when the piano canopy is opened and closed (Fig. 5) should be shaped to prevent other obstacles around the piano, can withstand the weight of the piano cover when the piano is open, and the mounting part is sturdy It is assumed that it is easy to attach and remove, and has a shape that does not damage the piano canopy (6).

Problems that the device tries to solve

The handling of the cover accompanying opening and closing of the piano canopy was done by the user folding up the cover each time and opening and closing the canopy on top of it. Seems to have used without opening the canopy after all.

Means for solving the problem

Lower the stick around the piano perpendicular to the canopy. As a result, the cover is suspended without contacting the periphery of the opening and the piano body.
By using the auxiliary tool, the canopy can be opened and closed without folding the cover, and can be opened and closed without taking time and effort.
In addition, by increasing the number of suspension support fittings attached due to the difference in the size of the piano, it is possible to perform a stable opening / closing operation.

The drive system of the canopy opening / closing device can be selected from (1) a wire type by a small winch, (2) a screw type by rotation of a screw cut on a motor shaft, and (3) a hydraulic type by expansion and contraction of a hydraulic cylinder.

It is a perspective view of the present invention It is a selection diagram of the driving method of the main body of the device for opening and closing the roof of the present invention It is the figure seen from the upper side of this invention It is the figure seen from diagonally below the top part of the present invention It is an enlarged view of the cover pinching prevention auxiliary tool of the present invention.

Explanation of symbols

1 Roller 2 Motor 3 Roller guide rail 4 Piano cover support 5 Support bar 6 Bracket felt 7 Spring 8 Bracket 9 Strut 10 Piano top opening

Claims (2)

Pandagraph type variable (2) The sliding roller (1) is used for the tip of the supportable column (9) and the contact part with the top, and the detachable rail (3) with double-sided tape is attached to the contact part of the back of the canopy. The contact part operates on the rail (3) to open and close, or with a rubber roller without the rail. Hold and hold the cover with the support bar (5) attached vertically to the bracket (4) that is fixed by inserting the thick plate of the top into the opening (10) on the piano canopy opening side. Things to prevent.

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