JPS5848713Y2 - Keyboard lid opening/closing device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a keyboard lid opening/closing device that is used in keyboard instruments such as electronic organs and electric organs, and is improved to improve safety during opening and closing operations.

2. Description of the Related Art Keyboard instruments such as electronic organs are provided with a keyboard lid to protect the keyboard section when not in use.

This keyboard lid is relatively heavy and, especially when used by small children, it generates a loud impact sound when it opens and closes, which not only damages the instrument but also poses a risk of getting fingers caught. It is a danger.

This idea was created in view of the above points, and provides a keyboard lid opening/closing device that has a simple configuration and can brake the movement of the keyboard lid, especially when opening and closing the keyboard lid, thereby improving safety. A spring piece is set to extend from the base end in front of the keyboard lid that is opened and closed, and this spring piece is movably inserted into a guide hole formed on the back of the keyboard lid to which it is fixed. It is.

An embodiment of this invention will be described below with reference to the drawings.

In Fig. 1, 11 is the front of the keyboard lid, and 11 is the front of the keyboard lid.
1 is rotatably connected to a keyboard lid back 13 fixedly provided by a hinge 12.

The front keyboard lid 11 comes into contact with the keyboard opening frame (not shown) in the closed state and seals the keyboard, and can be opened by rotating it as shown by the arrow 14. .

A leaf spring 15 is attached to the bottom surface of the proximal end of the front keyboard lid 11, extending in the direction of the end of the break-out 11, and a leaf spring 15 is attached to the end of the front end surface of the back keyboard lid 13. A guide hole 16 is formed into which the guide hole 15 is inserted from the distal direction.

That is, as the front keyboard lid 11 opens and closes, the spring plate 1
5 is inserted into the guide hole 16 and moved in the direction of being pulled out.

In this case, the guide hole 16 is set in a curved shape that minimizes the contact resistance due to the springiness of the spring plate 15 when the front keyboard cover 11 is in an intermediate state between open and closed as shown in the figure.

Therefore, according to the device configured as described above, when the front keyboard cover 11 is rotated in the direction of closing from the state shown in the figure, the spring plate 15 is biased in the direction opposite to the curved shape within the guide hole 16. Therefore, the contact resistance against the spring plate 15 in the guide hole 16 increases, and the rotational force of the front keyboard lid 11 is braked.

Therefore, when the front keyboard lid 11 is close to the mouth frame (not shown) and fully closed, the opening 11 is moved quietly, and the closing operation is completed safely without generating unnecessary impact. .

Furthermore, when the front keyboard lid 11 is further rotated in the direction of the arrow 14 and opened, the spring plate 15 also receives a large resistance within the guide hole 16, so that the open state can be set quietly without impact. It is what it is.

Further, in the device configured in this way, the spring plate 15
The tip part of the is unnecessarily subjected to resistance within the guide hole 16,
It is also possible that it becomes difficult to perform smooth movements.

In such a case, if a roller 17 is provided at the tip of the spring plate 15 as shown in FIG. 2, the tip of the spring plate 15 will slide smoothly within the guide hole 16, and the opening/closing operation of the keyboard cover will be facilitated. Runs smoothly.

Moreover, this is not limited to a roller, and may be set to any suitable shape that allows smooth sliding within the guide hole 16.

Further, although the spring plate 16 is used in the embodiment, it goes without saying that a rod-shaped spring can also be used.

As described above, according to this invention, with an extremely simple configuration, it is possible to reliably apply braking to the opening/closing rotational movement of the lid when the lid is opened and closed. This is extremely effective in improving the safety of opening and closing the keyboard lid.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating an opening/closing device according to an embodiment of this invention, and FIG. 2 is a diagram showing another example of a spring plate sliding mechanism. 11...Keyboard lid front, 13...Lock lid back, 15...Spring plate, 16...Guide hole, 17... roller.

Claims (1)

[Scope of utility model registration request] The front of the keyboard lid is rotatably connected to the front end of the back of the keyboard lid, and a spring piece is set to extend toward the back of the keyboard lid in front of the keyboard lid, and the spring piece is inserted into the back of the keyboard lid. A keyboard lid opening/closing device comprising a guide hole formed therein, the guide hole being set so that the contact resistance of the spring piece is reduced particularly in an intermediate state between opening and closing of the front of the keyboard lid.