JPH0690623B2 - Electronic musical instrument knee operating device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a knee lever operating device for an electronic musical instrument, and in particular, it is such that various effect controls can be simultaneously performed by one knee lever.

[Prior Art] A knee lever operating device in an electronic musical instrument is provided with an operating lever called a knee lever on a lower surface of a shelf board, and a player operates the switch by pushing the lever in a predetermined direction with a right foot and a knee. Therefore, for example, it is configured so as to obtain a sustaining effect.
The 5910 publication is known.

[Problems to be solved by the invention]

However, the conventional knee lever operating device of this type is
Due to the structure, it is difficult to arrange a plurality of switches, and only one effect control can be performed, which causes a problem in improving the playing effect. Therefore, recently, multiple types of effect control, such as glide O
It is required to perform N, OFF, vibrato ON, OFF, reverb ON, OFF, etc. at the same time, and to obtain an ensemble effect with other musical instruments.

[Means for Solving Problems] The knee lever operating device for an electronic musical instrument according to the present invention has been made to solve the above-mentioned problems, and is rotatable in the left-right direction provided in the lower portion of the instrument body. With a knee lever,
A first actuator driven by the knee lever, a second actuator formed in a frame shape having at least one drive portion and driven by the first actuator, and the drive portion of the second actuator. And a controlled member driven by.

[Action]

In the present invention, since the second actuator is formed in a frame shape, it is possible to provide a plurality of driving parts, and it is possible to arrange a plurality of driving parts inside thereof.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a perspective view of an essential part showing an embodiment of a knee lever operating device according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a bottom view. In these figures, the knee lever operating device 1 is unitized and is mounted from above in a mounting hole 3 provided in a shelf board 2. Various parts such as a switch, a slide member, and a rotating member, which will be described later, are provided. A knee lever case 4 for housing the knee lever case 4, a mounting board 5 to which the knee lever case 4 is mounted, a knee lever 6 operated by a right knee and the like are provided, and the mounting board 5 is the mounting hole 3
Further, it is arranged so as to be movable in the left-right direction via the first plate 7 by a width indicated by a symbol D in FIGS. 2 and 3.

This mounting structure will be described in more detail. The first plate 7 is fitted into the mounting hole 3 from above, and a peripheral portion of the first plate 7 is fixed to the upper surface of the shelf board 2. An opening 8 into which a case receiving portion 5A provided in the center of
Is formed on both sides of the opening 8, and screw mounting holes 10, 1 are formed on both sides of the opening 8.
1 is formed respectively. Long holes 12 and 13 which are long in the left-right direction are provided at both ends of the mounting board 5, respectively.
It is formed corresponding to 11. As shown in FIG. 3, each of the long holes 12 and 13 is composed of a straight narrow portion 15A and circular screw insertion portions 15B and 15C which are continuously provided at both ends of the narrow portion 15A. The case receiving portion 5A is movable in the opening 8 within the range D of the elongated holes 12 and 13 in the left-right direction, and has the number of keys of a well-known pedal keyboard (not shown) arranged at the lower portion of the musical instrument body. Accordingly, the left and right positions are set differently. In this case, in FIG. 1 to FIG. 3, since the 25-key pedal keyboard is assembled, it is positioned on the right side, and in this state, the mounting board 5 is located from the screw mounting holes 9 and 10 to the second plate 17 It is fixed to the plate 17 by a pair of setscrews 19 and 20 which are respectively screwed into the screw holes 18. The second plate 17 is fixed to the four corners on the first plate 7 by the set screws 22 via the spacers 21 having a thickness slightly larger than the thickness of the flange portion 5B of the mounting substrate 5 to attach the second plate 17. The substrate 5 is covered. When the mounting board 5 is set to the right side as shown in FIG.
2nd plate 17 through the screw insertion part 15B on the left side of 2,13
The mounting board 5 is fixed to the second plate 17 by being respectively screwed into the screw holes 18 and the shoulder portions of the set screws 19 and 20 push up the peripheral edges of the screw insertion portions 15B of the long holes 12 and 13. If you want to move the mounting board 5 to the left, use a pair of setscrews.
Loosen 19,20 and remove the screw parts 19a, 20a from the screw hole 18 and drop the setscrews 12, 13 to the position where the E ring 24 contacts the second plate 17, and shift the mounting substrate 5 to the left. Each long hole
The screw insertion portions 15C of 12 and 13 are made to correspond to the screw holes 18, respectively, and then the set screws 19 and 20 are respectively screwed into the screw holes 18. FIG. 4 shows this state, and shows the mounting position when the pedal keyboard has 13 or 20 keys.

In such a mounting structure, the long holes 12 and 13 and the set screw 1
With 9,20, the operation position of the knee lever 6 can be freely changed according to the number of keys of the pedal keyboard, and there is an advantage that the lever operation by the knee can be performed easily and surely.

The parts 19a, 20a above the set screw 19 and 20
The b and 20b have a diameter slightly smaller than the groove width of the narrow portion 15A of each of the elongated holes 12 and 13.

The knee lever case 4 is a case receiving portion of the mounting substrate 5.
It is fitted from above into the opening 28 formed in 5A and is fixed by a set screw 29. Horizontal base of knee lever 6
6A is a bearing portion integrally formed in the knee lever case 4
30 and a knee lever pressing member 31 shown in FIG. 5 so as to be pivotally supported, one end of which extends below the shelf 2 to form an operating portion 6B, and the other end of which is bent upward. Constitutes a spring mounting portion 6C. The knee lever pressing member 31 integrally has four elastic engaging pieces 32 that engage with the bearing portion 30, and is fitted into a vertical groove 33 (FIG. 1) provided on the inner wall of the knee lever case 4 from above. And is fixed by a set screw. Therefore, the front end face 34a of the knee lever pressing member 31 is inclined to facilitate fitting into the vertical groove 33. Further, a concave portion 35 is formed on the left side surface of the knee lever pressing member 31 in FIG. 5 in order to prevent the protrusion 41 of the rotating member 40 as a first actuator described later from coming into contact with the knee lever pressing member 31.

A locking groove 38 for locking one end 36a of the spring 36 that gives the knee lever 6 a habit of returning to the upper end surface of the spring mounting portion 6C.
The other end 36b of the spring 36 is rotatably hooked to an L-shaped metal fitting 52 screwed and fixed to a spring accommodating portion 39 provided in the knee lever case 4. The knee lever 6 is normally set and held so that the operating portion 6B and the spring mounting portion 6C are substantially vertical as shown in FIG.
In this state, the spring 36 maintains a substantially horizontal state. Then, in order to temporarily obtain a certain effect in this state, the operation portion 6B is rotated counterclockwise in FIG. 1 against the spring 36.

Inside the knee lever case 4, the rotating member 40 and a slide member 46 as a second actuator are arranged. The rotating member 40 is disposed corresponding to the knee lever 6 and the slide member 46, is rotatably supported by a rotating shaft 47, and has a locking piece 48 for locking the slide member 46.
And a projection 41 (FIG. 6) that is integral with the projection 41 (FIG. 6) and is urged clockwise by a spring 49 in the clockwise direction of FIG. Abutment 4
By being brought into contact with a, one end engaging portion 40A thereof closely faces the spring attaching portion 6C of the knee lever 6, and the engaging piece 48
Is pressed against the protrusion 50 of the slide member 46. An operating piece 51 is provided in the middle of the horizontal base 6A of the knee lever 6 so as to correspond to the protrusion 41. As shown in FIG. 6 (a) in the knee lever standing state (state of FIG. 1). The projections 41 are not spaced apart from each other, and are not engaged with each other even when the knee lever is tilted (when an effect is applied) in the same figure (b), and when the knee lever is housed, the spring is mounted as shown in the same figure (c). Since the portion 6C rotates clockwise, it is engaged for the first time, and the rotating member 40 is rotated. In order to temporarily obtain a certain effect, the spring mounting portion 6C rotates counterclockwise in FIG. 6B, and at this time, the mounting portion 6C presses the engaging portion 40a of the rotating member 40. The rotating member 40 is rotated in the same direction as the spring mounting portion 6C.

As shown in FIG. 7, the slide member 46 integrally includes a frame portion 46A having a substantially date shape in plan view, the protrusion 50, and a pair of front and rear elastic engagement pieces 55, 56 in the knee lever case 4. It is disposed on the switch mounting portion 57 so as to be movable in the left-right direction, and is biased leftward by the spring 58, that is, in the direction of the rotating member 40. The spring force of the spring 58 is set to be weaker than that of the spring 49 that biases the rotating member 40. The slide member 46 is locked at the initial position shown in FIG. 7 by the protrusion 50 contacting the locking piece 48 of the rotating member 40. As shown in FIG. 1, the engaging portions 55a and 56a of the elastic engaging pieces 55 and 56 are longitudinally formed on the outer wall surface of a substantially U-shaped storage wall 60 provided in the knee lever case 4. The slide member 46 is movably inserted into the grooves 61 and 62, whereby the movement stroke of the slide member 46 is set.

No. 7 on the switch mounting portion 57 of the knee lever case 4.
As shown in the figure, a pair of left and right micro-switches 65, 66 are provided as controlled members. These switches 65,
66 is a frame portion 46 so as not to prevent the slide member 46 from sliding.
It is located inside the A opening. In addition, the frame portion 4
On the upper surface of 6A, a plurality of, for example, four drive units 67 to 70, which are projections each having a substantially triangular prism shape, are integrally projected. In this case, the switch 65 is arranged corresponding to the drive unit 67, and its operating element 65a is pressed by the drive unit 67 so that it is set to the ON state in the knee lever standing state. On the other hand, the switch 66 is arranged corresponding to the drive unit 68, and its actuator 66a is not pressed by the drive unit 68 in the knee lever standing state and is set to the OFF state. The switch 65 corresponds to ON / OFF control of a vibrato effect that periodically shifts a pitch (pitch), and the switch 65 corresponds to ON / OFF control of a glide effect that shifts the pitch in one direction by a predetermined amount, for example.

Here, the target of the effect control by the knee lever operating device 1 is to increase the number of switches, in addition to the above two effect controls, ON / OFF control of the sustain effect and O of the slur.
N, OFF control, tremolo ON, OFF control, day vibrato ON, OFF control, reverb ON, OFF control, resist switching, other instruments or other instruments for controlling instruments equipped with this device It is possible to perform transmission control of a digital control signal, pitch change, and the like. In that case, FIG.
As shown in (b), the height of each drive unit 67 to 70 may be increased, and a plurality of stitches (65, 73) may be stacked and arranged as needed.

ON / OFF of the tremolo effect (similar to the vibrato effect)
The control controls OFF / ON of the tremolo effect when a specific sound group (a musical sound that is not unusual with tremolo ... marimba, mandolin, etc.) is selected. In this case, the 7th
When the switch 65 on the left side of the figure is used to control the tremolo effect, when the knee lever 6 is operated to the right, the slide member 46 is released from the locking piece 48 of the rotating member 40 and moves to the left. OFF control. On the other hand, the right switch 66
When using, the signal to turn off the effect should be output in the microcomputer when it is turned on.

ON / OFF control of slur is a specific sound group (lead system only)
ON / OFF of the slur when is selected by the tone switch
, And the knee lever 6 cannot control other tone colors.

The ON / OFF control of the day vibrato is performed by moving the knee to the right when a specific sound group (trumpet, etc.) is selected. Then, the daylight vibrato is applied to the sound to be emphasized, and when the knee is returned to its original position, the vibrato is gradually applied from there.

The ON / OFF control of the sustain controls the ON / OFF of the sustain for the tone color of the upper key (or lower key, pedal) that is currently selected in the tone color designation switch. If ON, the sound at key off of a certain tone (organ) will be sustained longer. If it is OFF, it is short.

The resist can be switched each time the knee is moved to the right once. The same thing can be done by turning on the registration switch. With such control,
It goes without saying that the resist sequence is programmed.

The pitch change is such that the pitch of the sound that the key is on now increases by the amount of movement of the knee depending on the degree of the angle that controls the knee to the right, and is set to a maximum length of about 3 degrees. In this case, a displacement-electric conversion transformer (sensor) such as a semiconductor strain gauge is used instead of the micro switch.

Next, the operation of the knee lever operating device 1 having the above configuration will be described.

Now, in the knee lever standing state in which the operating portion 6B of the knee lever 6 is set and held substantially vertically below the shelf plate 2 as shown in FIG. 1, the rotating member 40 is driven by the force of the spring 49. It has stopped at the position rotated by the maximum angle in the direction. At this time, the locking piece 48 presses the projection 50 of the slide member 46 against the spring 58 to prevent the slide member 46 from moving to the left. In this state, the switch 65 is turned on as shown in FIG. 7, and the vibrato effect is applied. On the other hand, the switch 66 is turned off and the glide effect is turned off.

Next, if it is desired to temporarily obtain the glide effect during the performance, the operating portion 6B of the knee lever 6 is rotated rightward in FIG. 1 against the spring 36 by operating the knee. Then, the spring mounting portion 6C of the knee lever 6 tilts to the left as shown in FIG. 6B to press the engaging portion 40a against the rotating member 40, so that the rotating member 40 resists the spring 49. 6 (b) is rotated counterclockwise to release the pressing state of the slide member 46 by the locking piece 48. As a result, the slide member 46 is rotated by the rotation member 40.
Is moved to the left due to the force of the spring 58,
The engagement portions 55a, 56a of the pair of elastic engagement pieces 55, 56 come into contact with the side wall surfaces of the rotating member 40 of the vertical grooves 61, 62 to stop. As a result, the switch 65 is turned off to stop the vibrato effect, and the switch 66 is turned on to produce the glide effect. On the other hand, when the knee is released from the operating portion 6B of the knee lever 6, the knee lever 6 is rotated and returned in the clockwise direction in FIG. 1 by the force of the spring 36 to return to the original vertical state. Accordingly, since the rotating member 40 is released from the knee lever 6, the rotating member 40 is returned to the original position by the force of the spring 49, and the locking piece 48 presses the protrusion 50 of the slide member 46, The slide member 46 is moved rightward against the spring 58 and returned to the initial position. As a result, the switch 65 is turned on to produce the vibrato effect, and the switch 66 is turned on.
Is turned off to stop the glide effect.

Next, when the knee lever 6 is not used, the knee lever 6 is rotated approximately 90 ° clockwise in FIG. 1 contrary to the above.
In this way, the state where the knee lever 6 is largely rotated clockwise in FIG. 1 is a state where the knee lever 6 is housed along the lower surface of the shelf board 2. By the rotation of the knee lever 6,
As shown in FIG. 6 (c), the operating piece 51 provided on the spring mounting portion 6C pushes up the protrusion 41 of the rotating member 40 from below.
As a result, the rotating member 40 resists the spring 49 and is shown in FIGS.
It is rotated counterclockwise in the figure, and the pressing state of the slide member 46 by the locking piece 48 is released as described above. Therefore,
The slide member 46 is moved to the left by the force of the spring 58,
The switch 65 is turned off and the switch 66 is turned on to produce a glide effect.

At this time, the spring 36 is almost vertical and buckled, and the knee lever 6 is set and held at the rotating position by utilizing the elastic force of the spring 36 to return to the straight state.

〔The invention's effect〕

As described above, in the knee lever operating device for an electronic musical instrument according to the present invention, since the second actuator is formed in a frame shape, it is possible to provide a plurality of driving parts, and a plurality of driving parts can be provided therein. Parts can be installed,
Therefore, it is possible to provide a knee lever operating device capable of performing a plurality of types of effect control.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an embodiment of a knee lever operating device according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 shows a case where a 25-key pedal keyboard is incorporated. FIG. 4 is a bottom view showing the position of the mounting board, FIG. 4 is a bottom view showing the position of the mounting board when a 13-key or 20-key pedal keyboard is incorporated, and FIG. 5 is a perspective view of the knee lever pressing member 31, and FIG. FIGS. 7A and 7B are diagrams showing the relationship between the operating piece of the knee lever and the rotating member. FIG. 7A is the knee lever standing state, FIG. 7B is the knee lever inclined state, and FIG. 7C is the knee lever retracted state. FIG. 7 is a slide member and a switch. FIG. 8 is a plan view showing a state in which the knee lever is erected, FIG. 8 is a plan view showing a knee lever inclined state, and FIGS. 9 (a) and 9 (b) are plan views showing another embodiment of the switch arrangement and IX. It is a IX line sectional view. 2 ... Shelf plate, 6 ... Knee lever, 40 ... Rotating member (first actuator), 46 ... Sliding member (second actuator), 49,58 ... Spring, 65,66 ... Switch ( Controlled member), 67-70 ... Drive unit.

Claims (1)

[Claims] 1. A frame having a knee lever disposed in a lower portion of a musical instrument body and rotatable in the left-right direction, a first actuator driven by the knee lever, and at least one drive section. A knee lever operating device for an electronic musical instrument, comprising: a second actuator driven by the first actuator; and a controlled member driven by the drive section of the second actuator.