JPS5810978Y2 - Push button switch for group performance training equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an illuminated push button switch used in a group performance training device.

In general, a group performance training device connects an instructor's electronic musical instrument (hereinafter referred to as a parent unit) played by an instructor and a student electronic instrument (hereinafter referred to as a slave unit) that is played individually by students via a transmission line. It is systematized so that signals can be sent and received between the base unit and each slave unit by connection.

In this case, the operation panel of the master unit may be provided with a switch system for individual instruction consisting of a plurality of illuminated push button switches provided as one selection switch system corresponding to each slave unit.

Each of these push-button switches is used by the instructor to call, have a conversation with, or give musical performance guidance to any student by pressing them, and when pressed, the built-in lamp lights up. The push button is irradiated with light emitted from the lamp.

Therefore, during training, the instructor can know from the display state of the push button whether or not the push button has been operated.

However, the illuminated pushbutton switches conventionally used in this type of device are non-locking or self-locking types, so they only have the function of controlling the opening/closing of a circuit and the function of identifying and displaying its operation. It is.

Therefore, when there are more than ten or even several dozen child units, such as in a group performance training device, the number of illuminated push button switches in the individual instruction switch system increases accordingly. It is difficult to reliably select a specific student from among a large number of pushbutton switches.

For this reason, there has been a demand for an illuminated pushbutton switch that can be used to identify in advance during lessons if at least one student is absent from playing each handset.

This idea was made in consideration of these points, and by turning on and off two light emitters with different light emission methods in response to a button press operation, it is possible to control the color or brightness emitted from these light emitters by turning them on and off. To provide a push-button switch for a group performance training device, which allows the status of individual instruction to be grasped and also displays identification of presence or absence of students.

In order to achieve this purpose, the push button switch for a group performance training device according to the present invention combines two types of switches to drive two light emitters with different light emission methods in response to the operation of each of these switches. This is how it was done.

This invention will be explained in detail below using the drawings.

FIGS. 1 and 2 show an embodiment of a push button switch for a group performance training apparatus according to this invention, with FIG. 1 being a block diagram of its main parts, and FIG. 2 being its electrical system diagram.

In these figures, 1 is a generally well-known self-lock switch (second switch), and this switch 1 is a self-lock switch that has a contact system consisting of an interlocking break contact 20 and a make contact 21 and has a self-lock function. It consists of a main body 2, a coil spring 3, and a sliding member 4 having a fitting groove 4a bored in its upper surface.
The contact system is configured to be slid against the contact point system to drive the contact system.

5a and 5b are switch external terminals provided corresponding to the contact system built into the self-lock switch body 2.

Reference numeral 6 denotes a non-lock switch (first switch) connected to the upper part of the self-lock switch 1. A sliding member 8 is slidably supported on the other hand, a coil spring 9 is interposed between the sliding member 8 and the switch body 7, and a luminescent color is removably housed inside the sliding member 8. different first and second
indicator lamps 10a and 10b, and a push button 11 fixed to the upper surface of the sliding member 8 so as to close the opening thereof, and the protrusion 7a of the non-lock switch body 7 is inserted into the fitting groove 4a. They are fitted and integrally attached to the self-lock switch 1.

In addition, the non-lock switch 6 includes a contact system in the non-lock switch body 7 consisting of a pair of make contacts 22 and 23 that are driven in conjunction with the movement of the sliding member 8, and a first indicator lamp. An external circuit is configured to turn on the light 10a when the non-lock switch 6 is operated.

An external circuit is formed so that the second indicator lamp 10b is turned on when the self-lock switch 1 is operated.

In this case, assuming that the spring constant of the coil spring 3 is kA and the spring constant of the coil spring 9 is 8, these are selected so as to satisfy the relationship kA>kB.

Therefore, the non-lock switch 6 has a k
When a force smaller than A is applied, the contact system of the non-lock switch main body 7 is operated as the sliding member 8 slides.

Further, the self-lock switch 1 drives the contact system of the self-lock switch body 2 as the sliding member 4 slides when a force greater than kA is applied to the push button 11 to the extent that the coil spring 3 is elastically deformed. It works like this.

FIG. 2 is a basic electrical system diagram of the illuminated push-button switch corresponding to one child unit when the illuminated push-button switch shown in FIG. 1 is used in the individual instruction switch system of the group performance training device. .

In FIG. 2, one end of each of the break contact 20 and the make contact 21 of the self-locking switch 1 is commonly connected to a power supply terminal 24 to which a drive power supply +■ is applied.
1 is grounded via a series circuit in which a second indicator lamp 10b and a protective resistor 25 are connected in series.

The other end of the break contact 20 is grounded via a series circuit in which one make contact 23 of the non-lock switch 6, a first indicator lamp 10a, and a protective resistor 26 are connected in series.

The other make contact 22 is connected in series to a signal transmission path 27 between the parent device and the slave device.

In the illuminated push button switch configured as described above, when the instructor lightly presses the push button 11 during training, the sliding member 8 of the non-lock switch 6 slides downward, causing the non-lock switch body 7 to slide downward. The make contacts 22 and 23 are driven to close by driving the contact system.

As a result, the make contact 22 closes the signal transmission path 27 between the master unit and the slave unit, and the instructor can have a conversation with the student playing the slave unit or give performance guidance.

At this time, the first indicator lamp 10a is connected to the make contact 23.
When the push button 11 is closed, it is turned on and the push button 11 is displayed brightly, so that the instructor can know the communication state with the slave unit from the display state of the push button 11.

On the other hand, if the student playing the handset during the lesson is absent, if the push button 11 is strongly pressed, the self-lock switch 1 will be locked by the pressing operation.
Since the break contact 20 and the make contact 21 of the self-locking switch main body 2 operate to drive the second indicator lamp 10b, the second indicator lamp 10b remains in the first state until the locked state is released. Display lamp 10
It continues to light up in a color different from that of a.

Therefore, by using such a push button switch in the switch system for individual instruction of a group performance training device, the instructor can set up the corresponding second indicator lamp in advance while the student who is playing the child unit is absent during the lesson. Since it can be turned on, it is possible to identify whether a student is present or absent from the display state of the push button.

In addition, if the values of the protective resistors 25 and 26 are made different,
Since the brightness of each lamp 10a, 10b is different when displaying the status of individual instruction and when displaying attendance, this also has the same effect as the color-based display described above.

FIG. 3 shows an example of a circuit in which the break contacts 20 and 21 of the self-locking switch 1 shown in FIG. 2 are replaced with electronic circuits. In place of 21, field effect transistors (hereinafter referred to as FETs) Gl and G2 are connected, respectively. The FETs G1 and G2 are turned on and off by the outputs Q and Q obtained at the set output terminal and the reset output terminal of the flipflop 28, respectively.

In this case, a switch 29 (make contact) driven by the self-lock switch 1 is connected between the T input terminal of the flip-flop 28 and the power supply terminal 24.

In such a circuit, when a trigger signal corresponding to when the switch 29 is on or off is input to the T input terminal of the flip-flop 28, the flip-flop 28 outputs a set output terminal, a set output terminal, and a set output terminal in response to this I trigger signal. Since outputs Q and Q are alternately generated at the reset output terminal, the same function as that shown in FIG. 2 can be provided by setting, for example, FETG1 to OFF and FETG2 to ON as an initial state.

In this case, the switch 29 is driven by the self-locking switch 1, but it may be driven by a non-locking type switch.

In the above embodiment, a case was described in which a first switch with a non-locking function was placed on the front side (operation side) and a second switch with a self-locking function was placed below it. The spring constant of the spring may be reversed, and a self-locking switch may be placed on the front side, and a non-locking switch may be placed below it.

In addition, the return spring is not limited to a coil spring.
Of course, a leaf spring, an elastic body made of plastic, etc. can also be used.

As explained above, according to the push button switch for the group performance training device according to this invention, it is possible to selectively display information on a plurality of light emitting devices according to the push button operation, so that it is possible to grasp the status of individual instruction. In addition to being able to identify the presence or absence of students playing the handset,
For students who are absent, the first light emitting device will not operate even if the first switch is activated, so there will be no need for unnecessary conversation or performance guidance due to the first switch being activated by mistake. effective.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of a push button switch for a group performance training device according to this invention. Figure 1 is a configuration diagram of its main parts, Figure 2 is its electrical system diagram, and Figure 3 is FIG. 3 is a circuit diagram when the switch portion shown in FIG. 2 is replaced with an electronic circuit. 1... Self-wax 2 switch (second switch), 2... Self-lock switch body, 3, 9
......Coil spring, 4,8...Sliding member, 6...Non-lock switch (first switch)
, 7...Non-lock switch body, 10 a.
...First indicator lamp (light emitter), 10b...
...Second indicator lamp (light emitter), 28...
Flip-flop, 29...switch.

Claims (1)

[Scope of utility model registration request] A first switch with a non-locking function that returns with a spring and a second switch with a self-locking function are connected in the operating direction, and the spring constant of the spring of the second switch is equal to that of the spring of the first switch. A first light emitter is set to be larger than a constant, and a switch located on the front side is provided with a first light emitter that is driven when the first switch is operated, and a second light emitter that has a different light emission method from the first light emitter that is driven when the second switch is operated. By configuring a circuit that disables the driving of the first light emitting device when the second switch is activated, the second switch is activated and the second light emitting device is activated when the student is absent. A push button switch for a group performance training device, characterized in that the first light emitting device is not driven while the first light emitting device is not driven.