JPS593535Y2 - Variable resistance operating mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable resistor operating mechanism that operates a sliding variable resistor using a DC signal and displays the set position.

Generally, in electronic devices, various levels of voltage, current, etc. are set by manually rotating or moving variable resistors forward and backward.

By the way, recently, it has been considered to operate such a variable resistor in a circuit using, for example, the rotational force of a DC motor.

In this way, the variable resistor can be operated using the driving power for the DC motor, that is, the DC signal, and remote control, automatic operation, etc. can be performed accurately and easily electronically.

By the way, conventionally, when driving such a variable resistor with a DC motor, the DC motor, variable resistor,
A display mechanism for displaying the setting position of the variable resistor is arranged, and these are linked by appropriate means, such as a string and a pulley.

This has resulted in problems such as the mechanical design being troublesome and the assembly being complicated, resulting in lower volume utilization and higher costs.

This invention was developed in view of the above circumstances, and it is possible to integrate a sliding variable resistor, a DC motor, a display mechanism, etc., and the overall shape is small and easy to assemble, reducing costs and improving the design. The object of the present invention is to provide a variable resistance operating mechanism that can display a beautiful display.

An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 5.

FIG. 1 is a plan view showing the overall configuration, and FIG. 2 is a side view. In the figure, 1 is a panel of an electronic device, and 2 is a back panel provided on the back side of the panel 1.

The panel 1 and the back panel 2 are located parallel to each other with a predetermined interval between them, and the flange 3a of the lighting case 3 is held between them.

In addition, the panel 1 has a window 1 corresponding to the lighting case 3.
It forms a.

A through hole 3b is formed on both sides of the lighting case 3, into which a cursor plate 4 made of a rigid body colored in an appropriate color is fitted so as to be movable horizontally.

A lamp 5 is arranged on the rear surface of this cursor plate 4, and a plastic lens 6 and a window glass 7 are arranged on the front surface.

The plastic lens 6 has a continuous hexagonal cut surface, for example, and randomly diffuses and refracts the transmitted light to dynamically display the light from the lamp 5.

A sliding variable resistor 9 is attached to a chassis 8 attached to the back panel 2 so that the moving direction of its operating shaft 9a is parallel to the back panel 2.

The operating shaft 9a and the end of the cursor plate 4 are connected by an arm 10 made of a metal plate and having rust resistance.

A DC motor 11 is disposed outside one end of the movement track of the operating shaft 9a, a motor 11 is attached to this rotating shaft, and a guide pulley 12 is provided outside the other end.

A thread 13 is stretched between the boots 9112 and 12, and the operating shaft 9a is secured to the thread 13.

A spring 14 is inserted between the thread 13 and the operating shaft 9a to apply appropriate tension to the thread 13.

Note that FIG. 3 is a cutaway plan view of the lighting case 3, and FIG. 4 is a front view. A step is provided at the front opening of the flange 3a, and a window glass 7 is fitted therein. It is pressed and held against the opening edge of the window 1a of the panel 1, and the edge of the glass window is accommodated by the stepped portion.

This prevents light from concentrating on the edge of the window glass and making it extremely bright.

Furthermore, the stepped portion protects the mounting screws and provides a good design.

The window glass 7 serves both as a transparent protection plate on the front surface of the lighting case 3 and as a transparent plate provided on the window 1a.

A plastic lens 6 is disposed on the rear surface of the window glass 7, and the upper and lower edges of the plastic lens 6 are fitted into stepped portions of the upper and lower opening edges of the lighting case 3 to be held in a predetermined position.

Note that appropriate information, such as the type of input signal, etc., is written in the part of the window glass 7 that corresponds to the flange 3a of the lighting case 3.
The display may be selectively displayed using a light emitting element or the like arranged on the back surface.

Further, the window glass 7 may be made of not only glass but also a plastic plate, and may be translucent or suitably colored.

With such a configuration, by controlling the rotation of the DC motor 11, the sliding variable resistor 9 is connected via the thread 13.
The operating shaft 9a of the arm 1 is moved forward and backward according to this position.
0, the cursor plate 4 can be driven in the horizontal direction.

Therefore, the set position of the variable resistor 9 can be represented by the position of the cursor board 4 displayed through the window 1a.

In addition, since the cursor plate 4 is made of a rigid body and is held by fitting into the through holes 3b on both sides of the lighting case 3, the structure is simpler than, for example, a film-like cursor plate wound onto a spool or the like. become.

Furthermore, a plastic lens 6 is placed on the front side of the cursor plate 4, and a lamp 5 is provided on the back side for illumination, so the cursor plate 4 is appropriately divided and painted.For example, as shown in FIG. 5, the central part is yellow. If Y is colored on both sides with red R and green G, an extremely fantastic coloring can be obtained.

As described in detail above, the present invention has a cursor plate made of a rigid body inserted into the through holes on both sides of the lighting case, and is driven forward and backward in conjunction with a sliding variable resistor, and the front flange of the lighting case and the window of the panel. A window glass is provided between the cursor plate and the cursor plate, and a plastic lens is attached thereto, and the cursor plate is illuminated from the back side, so that it is possible to provide a variable resistor operating mechanism that is simple in construction and provides a beautiful display.

[Brief explanation of drawings]

1 to 5 are views showing one embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, FIGS. 3 and 4 are a plan view and a front view of the lighting case, and FIG. FIG. 5 is a diagram showing a cursor board. 1.2...Panel, 3...Lighting case, 4...Cursor board, 5...Lamp,
6...Plastic lens, 7...Window glass, 9...Variable resistor, 11...Motor, 13...Thread.

Claims (2)

[Scope of utility model registration request] (1) A lighting case with a front opening corresponding to the window formed in the panel, and a lighting case that penetrates through holes on both sides of the lighting case and is movable along the panel surface and linked to a sliding variable resistor. a cursor board, a lamp provided on the back of the cursor board, a window glass held between the front opening edge of the lighting case and the panel, and a plastic lens attached to the back of the window glass. Variable resistance operating mechanism. (2) Utility Model Registration The variable resistance operating mechanism according to claim 1, characterized in that a window glass is fitted into a step formed at the edge of the front opening of the lighting case.