JPS593538Y2 - Variable resistor with switch and indicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable resistor with a switch and an indicator.

Hereinafter, one embodiment of the present invention will be explained in detail with reference to the drawings. Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a partially exploded perspective view showing the second switch section, and Fig. 3 is a front view showing an embodiment of the present invention. 2 is a front view of the embodiment of the present invention with the second switch section removed, where A is a variable resistor section, B is an indicator section associated with the operation of the variable resistor, and C is a section for switching bands on a TV, etc. The first switch section, D indicates a second switch section for channel selection, etc.

First, in the variable resistor section A, 1 is a case made of an insulating material, 2 is an insulating substrate with a resistor (not shown) on the top surface, and 3 is a metal case for fixing the insulating substrate 2 to the case 1. A plurality of locking pieces 3a are bent on the mounting plate, and are locked to the locking portions 1a of the case 1, thereby holding the insulating substrate 2 and fixing it to the lower surface of the case 1.

4, 5, and 5' are terminals, and 6 is a pointer protruding from the back of a slider (not shown) installed in the case 1, which protrudes from an elongated guide groove provided on the upper surface of the case 1.

Note that the slider is attached to a screw shaft (
When the screw shaft is rotated by the knob 13, the slider slides inside the case 1 and the pointer 6 moves. It is designed so that the resistance value changes.

Next, the indicator part B consists of an indicator frame 7 made of an insulating material and a flexible film 8 made of polyester or the like. The film 8 is fixed at one end to the pointer 6, and is loaded in a curved shape in the frame 7 as shown by the broken line, and travels through the frame 7 as the slider slides. The symbol displayed on the window (not shown) provided on the surface of the screen changes.

Further, in the first switch section C for band switching, 9 is a case made of an insulating material, 10.11 is a terminal fixed to the case 9, and 12 is a lever for band switching.

13 is a knob, and by rotating the knob 13, the resistance value between the terminals 4 and 5.5' of the variable resistor section A can be adjusted, and by operating the lever 12, the band can be switched. Can be done.

The mechanisms of the variable resistor A, the indicator section B, and the first switch section C for band switching as described above are well known, and therefore detailed explanation thereof will be omitted below.

Next, the second switch section for channel selection, etc. of the present invention will be explained in detail.

Fig. 2 is a partially exploded perspective view of the second switch section, and Fig. 4 is a cross-sectional view of the same main part. 15 is a box-shaped switch casing made of insulating material; is notch 1
5a, a hole 15b is provided in the end surface.

Note that a contact protrusion 1 is provided at the center of the inner end surface 15C of the housing 15.
A pair of fixed contacts 16 having 6b are provided, and a terminal 16a integrated with the fixed contacts 16 is led out of the housing 15.

Reference numeral 17 denotes a driving body made of an insulating material, and projecting bodies 17 a and 17 b are formed at opposite ends of the driving body 17. On the other hand, the projecting body 17 a has a movable contact cut out from a single metal plate. 18 is forged across the protrusion 17a', and the other protrusion 17b is provided with a hole 17d.

Note that 17C is a reinforcing rib, and 19 is a coil spring.

As mentioned above, the switch housing 15 of the second switch section shown in FIGS. 2 and 4 is cut into the protrusion 16 on the rear end face of the case 1 of the variable resistor section A shown in FIG. It is attached with the notches 15a fitted, and the protrusion 15d is locked by the protrusion 1C of the variable resistor section A.

Further, the end of the plate 17e of the driver 17 is slidably housed in the hole 15d of the switch housing 15.

On the other hand, the protruding body 17b of the driving body 17 is engaged with the spacer 14 between the knob 13 and the lever 12 through the hole 17d together with the coil spring 19, as shown in the partial plan view of FIG.

In the variable resistor equipped with a switch and an indicator as described above, the operation of the second switch section will be explained.

First, when the knob 13 is not pressed, the coil spring 1
9, the driving body 17 is always pressed in the direction of the arrow shown in FIG.
The fixed contact 16 of the switch housing 15 is in an off state.

Furthermore, when the knob 13 is pressed, the movable contact 18 comes into contact with the fixed contact 16 due to the movement of the driver 17, and the switch is turned on. When the pressing force is released, the driver 17 is moved by the coil spring 19 to the position before pressing. It returns and the switch turns off again.

The present invention has the above-mentioned configuration and operating principle, and integrates a variable resistor A with an indicator B, a first switch C for band switching, and a second switch D for tuning. By making it a composite device for electronic tuners, it is possible to provide a device with good operability and space factor, and there is no need to make any special changes to the conventional variable resistor.
In addition, there is the advantage that the second switch D can be removed and replaced, which has a great practical effect.

[Brief explanation of drawings]

The drawings all show embodiments of the present invention, and FIG. 1 is a front view;
Fig. 2 is a partially exploded perspective view of Fig. 1, Fig. 3 is a front view with the second switch section removed, Fig. 4 is a partial sectional view of the second switch section, and Fig. 5 is the main part. FIG. A: Variable resistor section, B: Indicator section, C: First switch section, D:...
...Second switch section, 1...Variable resistor case, 2...Insulating board, 3...Mounting plate, 4, 5.5'... ...Variable resistor terminal, 6...
...Pointer, 7...Indicator frame, 8...
... Film, 9 ... Case of switch section C, 10.11 ... Terminal of switch C, 12.
...Lever, 13...Knob, 14...
...Spacer, 15...Switch housing of switch section, 16...Fixed contact, 17...
...Driver, 18...Movable contact, 19...
...Coil spring.

Claims (1)

[Scope of utility model registration request] An indicator unit that works in conjunction with the case of the variable resistor unit and a slider that is driven by engaging with the operating shaft in the variable resistor unit, and has a flexible film having a display unit bent and held in the housing. a first switch section having a movable body provided coaxially with the actuation shaft and having a movable piece fixed thereto, and a support plate having a terminal; and a spacer fitted to a knob engaged with the actuation shaft. A coil spring is attached, a movable contact is provided at one end of a driving body driven by the knob and the coil spring, and a switch housing is provided at one end of the case of the variable resistor section, and a fixed contact is provided within the switch housing. A variable resistor equipped with a switch and an indicator, characterized in that the variable resistor comprises a second switch section.