JPS5855611Y2 - Resistor adjustment device for remote control - Google Patents

Description

[Detailed description of the invention] This invention relates to a variable resistor adjustment device that remotely controls the volume, sound quality, frequency, etc. of radios, televisions, etc., and a motor that turns on and off the variable resistor by remote control. To provide a practical device which can be operated by a button and at the same time can be operated by an operating knob, and the knob can be operated easily.

Conventionally, as shown in FIG. 1, a motor 2 is turned on and off via a remote-controlled motor drive control circuit 1, and the speed is changed via a gear mechanism 3, and a variable resistor 4 is used to adjust the volume, sound quality, frequency, etc. I am trying to operate it.

However, such a structure is not provided with an operating knob, and even if an operating knob is attached to such a structure from the outside, the shaft of the variable resistor 4 is connected to the motor 2 via the gear mechanism 3. Therefore, the rotation of the shaft of the resistor 4 becomes difficult, making it impossible to put it to practical use.

In view of these points, the present invention provides the above-mentioned conventional device with a knob that can be operated from the outside, and also provides an intermediate device between the motor and the resistor so that the knob can be easily operated.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 shows a first embodiment of the present invention, in which a motor 12, which is turned on and off via a motor drive control circuit 11 controlled by motor control, changes speed and adjusts the volume via a gear mechanism 13. An intermediate device 15 is connected to the variable resistor 14.

Further, the other side of the variable resistor 14 is provided with a knob 16 for manually operating the resistor 14.

The intermediate device 15 is provided on the gear mechanism 13 side, and includes a disc body 18 provided with a plurality of grooves 17 radially formed on the outer periphery of the resistor 14 side. It is provided with a spring 20 that engages with the plurality of grooves 17 of the.

Further, the spring 20 presses against the surface of the groove 17 with appropriate elasticity.

That is, the rotational force of the gear mechanism 13 is connected to the motor 12, so the rotational force of the rotating shaft 19 of the resistor 14 is light, so the spring 20 rotates the resistor 14 via the knob 16. When the spring 20 is operated, the tip of the spring 20 is connected to the motor 12, and when the motor 12 rotates, the spring 20 is pressed against the plurality of grooves 17 of the heavily rotating disk body 18 with a pressing force that does not cause the gear mechanism 13 to rotate. The distal end engages with the gear groove 17 of the disc body 18 and has a pressure contact force that connects the rotational force of the motor 12 to the resistor 14 .

Thus, the resistor 14 is driven and adjusted by the motor 12 for remote control, and at the same time, the resistor 14 is controlled by the knob 16.
It can be adjusted manually or externally.

FIG. 3 shows a second embodiment in which the intermediate device 15 is modified, and the intermediate device 25 includes a disc body 28 provided on the gear mechanism 23 side and having a gear-shaped groove 27 on the circumferential surface. ,
A groove 27 on the circumferential surface of the disk body 28 is formed on the rotating shaft 29 of the resistor 24.
It is provided with a mouth-shaped spring 30 that engages with.

Further, the spring 30 is in pressure contact with the surface of the groove 27 with the same appropriate elasticity as described above.

Thus, the resistor 24 controls the motor 22 which is turned on and off via the motor control circuit 21 which is remotely controlled.
At the same time, it can also be manually adjusted externally using the knob 26.

FIG. 4 shows a third embodiment in which the intermediate device 15.25 is modified, and the intermediate device 35 is provided on the gear mechanism 33 side, and has multiple grooves 37 formed radially on the outer periphery of the resistor 34 side. The ball 41 is engaged with the plurality of grooves 37 of the disc body 38 and is negatively biased by a spring 40 at the beginning part 39 fixed to the rotating shaft of the resistor 34. .

Further, the ball 41 of the spring 40 is press-fitted into the groove 37 with the same appropriate elasticity as described above.

Thus, the resistor 34 controls the motor 32 which is turned on and off via the motor control circuit 31 which is remotely controlled.
At the same time, it can also be manually adjusted externally using the knob 36.

As mentioned above, the present invention has a structure in which a variable resistor is operated by turning on and off a remote control using a remote control.
An operating knob is connected to the variable resistor, and the motor and the variable resistor are interlocked and connected via an intermediate device,
Since the variable resistor is selectively operated by either the operating knob or the motor, the resistor can be operated by remote control, and at the same time, it can be operated manually using the operating knob, and the rotation of the knob can be easily controlled. It has the following effects:

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a conventional example, Fig. 2 is a schematic explanatory diagram showing a first embodiment of the present invention, Fig. 3 is a schematic explanatory diagram showing a second embodiment, and Fig. 4 is a schematic explanatory diagram showing a third embodiment. FIG.

Claims (1)

[Scope of utility model registration request] In a device that operates a variable resistor 14 by turning on and off a motor 12 by remote control, an operating knob 16 is connected to the variable resistor 14, and the variable resistor 14 and the motor 12 are connected by a spring and a gear. The operation knob 16 and the motor 1 are interlocked and connected via an intermediate device consisting of the
A remote control resistor adjustment device configured to select the variable resistor 14 from one of these 16.12.