JPS6228477B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knee lever device used in electronic organs, etc., which utilizes a coiled spring to keep the knee lever stationary in the upright and retracted states, and maintains the switch in the on state when the knee lever is retracted. This is what I did.

Generally, electronic organs use a knee lever device that is operated by the performer's knee in order to provide a sustain effect and the like. With this type of knee lever device, when the knee lever is in a stationary state with the knee lever upright, the switch is generally turned off to prevent sustain from being applied, and when you want to add sustain or the like at a desired point during a performance, you lightly press the knee lever with your knee. When the switch is closed, sustain is applied only during that period, and when the knee lever is retracted, the switch must be closed at all times, so that sustain is applied regardless of the operation of the knee.

The present invention provides a knee lever device that achieves the above-described complex functions with a small number of parts.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a substrate provided on the front lower surface of the electronic organ, 1a is a through hole formed in the substrate 1, 2 is a knee lever rotatably attached to the substrate 1 by a support 3, and 2a is a An operation pin protruding from the tip 2b of the knee lever 2 and forming a switch operation section together with the tip 2b; 4 a push switch disposed near the switch operation section of the knee lever 2; 4a an operation lever of the switch 4; 4b is a collar provided on the operating lever 4a;
4c is a coil spring that always urges the operating lever 4a in the protruding direction; 5 is a support base fixed to the substrate 1; 6 is the tip end 2b of the knee lever 2;
This is a helical spring suspended between the support base 5 and the support base 5.

In the above configuration, if it is desired to apply sustain at a desired time during performance, the knee lever 2 is raised from the base plate 1 as shown in FIGS. 2 and 4. In this state, the knee lever 2 stands still in an almost vertical position due to the action of the helical spring 6, and the operating pin 2a is only lightly touching the collar 4b of the switch 4, so the switch 4 is turned off. in a state.

To start playing in this state and apply sustain at a desired time, the player only needs to lightly press the knee lever 2 with his knee in the direction of the arrow X in FIGS. 2, 4, and 5. In this way, as shown in FIG. 5, the knee lever 2 tilts against the biasing force of the helical spring 6, and the operating pin 2a presses the collar 4b to turn on the switch.

Of course, if the knee lever 2 is released from the knee lever 2 at an appropriate time, the knee lever 2 will come to rest again in an upright state due to the biasing force of the helical spring 6 and the coil spring 4c, and the switch 4 will be turned off.

On the other hand, if you want sustain to be applied all the time during performance, rotate the knee lever 2 in the direction of the arrow Y in FIG. You can store it in In this way, as the knee lever 2 rotates, the helical spring 6 rotates as shown in FIG.
The spiral portion presses the tip of the operating lever 4a of the switch 4. Therefore, when the knee lever 2 is retracted, the switch 4 is always closed, and the sustain effect is applied at all times during the performance, regardless of the operation of the knee.

As described above, the present invention uses a helical spring to keep the knee lever stationary between the upright state and the stowed state, and when the knee lever is pressed from the upright state to the non-stored direction, the switch is turned on using the switch operation part of the knee lever. Since the switch is turned on by a part of the helical spring in the stored state, the number of parts of the knee lever device can be reduced, and assembly can be simplified and costs can be reduced.

[Brief explanation of the drawing]

The drawings all show one embodiment of the present invention, and FIG. 1 is a perspective view of an electronic organ using a knee lever device, and FIGS. 2 and 3 are perspective views showing the knee lever in the upright and retracted states. figure,
Figure 4 is a perspective view of the main parts showing the standing state; Figure 5;
FIG. 6 is a side view showing the knee lever in a pressed state and in a retracted state, respectively. DESCRIPTION OF SYMBOLS 1...Substrate, 1a...Through hole, 2...Knee lever, 3...Support tool, 4...Switch, 5...Support stand, 6...Tilted spring.

Claims (1)

[Claims] 1. A knee lever rotatably attached to a board, suspended between a switch operation part of the knee lever and the board, and allowing the knee lever to rest in a state where it stands up from the board and a state where it is stored along the board. The device includes a coiled spring and a switch provided near a switch operating portion of the knee lever, and when the knee lever is operated from an upright state to a non-storage direction, the switch is operated by the switch operating portion of the knee lever. . A knee lever device, characterized in that when the knee lever is stored, the switch is operated by a part of the helical spring.