JPH0442954Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an indicator light support device used in a controller for adjusting the temperature of an electric kotatsu or an electric blanket.

BACKGROUND TECHNOLOGY Electric kotatsus and electric blankets are generally equipped with a controller for temperature adjustment, and are equipped with a pilot lamp as an indicator light for confirming power input. As shown in FIG. 3, the lighting location is a display portion 1a of a translucent temperature adjustment knob 1 engaged with the tip side of the operating shaft 7 of the variable resistor 5.
Many of them are equipped with a pilot lamp 2 attached to the holding part 4a of the indicator light support device 4 on the inside of the indicator light support device 4, and the method of fixing it is as shown in FIG. into the tip of the operating shaft 7 of the variable resistor 5, and then tighten the nut 6.
was screwed onto a threaded portion 8 formed on the variable resistor 5 so as to cover the root portion of the operating shaft 7 and fixed by tightening.

Problems to be Solved by the Invention However, in this fixing method, the insertion hole 3 of the indicator light support device 4 is inserted from the front side of the variable resistor 5 so as to pass through the operating shaft 7, and the screw is then screwed in with the nut 6. 8, which required a nut tightening jig and the like, making this a very time-consuming fixing method. In addition, if the indicator light support device 4 is simply inserted into the threaded portion 8 without tightening the nut 6, the support device 4 may wobble in the vertical, longitudinal, rotational directions, etc., and when the knob 1 is rotated, the display section of the knob 1 may become unstable. Since the pilot lamp 2 moves when the holding part 4a of the indicator lamp support device 4 is touched, the instability of the pilot lamp 2 can be seen through the translucent knob 1, and the product is not satisfactory.

The present invention solves the problems of the prior art, and provides an indicator light support device that has a simple structure and can be securely fixed onto a variable resistor.

Means for Solving the Problems In order to solve the above problems, the indicator light support device of the present invention has a holding part that holds an indicator light that illuminates the display part so as to cover the root part of the operating shaft of the variable resistor. An engaging part that elastically clamps a threaded part formed on the variable resistor is formed by opposing legs, and a linear convex part that engages with the threaded part is connected to the threaded part. It is formed on the surface facing the part.

Effects With the above configuration, the present invention allows the engaging part formed by the opposing legs to be inserted into the threaded part from the side surface of the operating shaft and clamps the threaded part, making it easy to install the indicator light support device. , displacement of the operating shaft in the radial direction and rotational direction can be prevented. Moreover, since the linear convex portion formed on the engaging portion is engaged with the threaded portion, displacement of the operating shaft in the axial direction can be prevented and securely fixed, requiring tightening with a nut or the like. It will no longer be.

Embodiment An indicator light support device according to an embodiment of the present invention will be described below with reference to the drawings. Note that the same parts as those in the conventional example are given the same reference numerals as in FIGS. 2 and 3, and the explanation thereof will be omitted.

As shown in FIG. 1, the indicator light support device 9 of the present invention
There is a holding part 10 made of a semicircular long tube holding a pilot lamp 2 for confirming power input that illuminates the display part 1a of the knob 1 at the top end of the holding part 10. A claw-like holding portion 14 is formed at the tip of the leg 12. An engaging portion 13 having elasticity that engages with the threaded portion 8 consisting of the leg 12 and the holding portion 14
The inner dimension of the variable resistor 5 is slightly smaller than the outer diameter of the threaded portion 8 formed to cover the base of the rotatable operating shaft 7.
Now, in order to fix the indicator light support device 9 of the present invention to the variable resistor 5, the engaging portion 13 of the indicator light support device 9 is engaged with the screw portion 8 in the direction of the arrow. In this way, the opposing legs 12 are connected to the opposing claw-like holding portions 14.
Together with this, the leg 12 is in a state of holding the threaded part 8.
Since the operating shaft 7 is held in place by its elastic force, the operating shaft 7 will not be misaligned in either the radial direction or the rotational direction.
Moreover, since a linear convex portion 15 is formed on the inner surface of the engaging portion 13 to be engaged with the threaded portion 8 by screwing or biting into the thread of the threaded portion 8, the operating shaft 7 will not be displaced in the axial direction.

Therefore, the indicator light support device 9 is securely fixed to the threaded portion 8 of the variable resistor 5 without wobbling in any direction such as the radial direction, rotational direction, or axial direction of the operating shaft 7, so that the display There is no need to use the nut 6 for fixing the lamp support device 9, and of course there is no need for a nut tightening jig, resulting in a significant improvement in work efficiency, which is very advantageous.

In this embodiment, a pilot lamp is used as the indicator light, but it goes without saying that various light emitting sources such as a light emitting diode can be used.

Effects of the Invention As described above, when the indicator light support device of the present invention is fixed to a variable resistor, the indicator light support device is engaged with the threaded portion formed at the base of the operating shaft of the variable resistor. The engaging part is elastically clamped, and the engaging part has a linear convex part that is screwed or fitted to the threaded part, so it can be used in the radial direction of the operating shaft and There is no wobbling in any direction, such as the rotational direction or the axial direction, and it is securely fixed. Further, according to the present invention, there is no need for tightening nuts or tightening jigs, which leads to a reduction in the number of parts and an improvement in work efficiency, which is extremely advantageous in practice.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of an indicator light support device according to an embodiment of the present invention, Fig. 2 is an exploded view of the conventional same device,
FIG. 3 is a partially cutaway sectional view of the same device. 2... Pilot lamp, 5... Variable resistor,
7... Operating shaft, 8... Screw part, 9... Indicator light support device, 10... Holding part, 12... Leg, 13... Engaging part, 14... Holding part, 15... Linear convex part.

Claims (1)

[Scope of utility model registration request] Opposing legs of an engaging part that elastically clamps a threaded part formed on the variable resistor so as to cover the base of the operating shaft of the variable resistor on a holding part that holds an indicator light that illuminates the display part. and a linear convex portion that engages with the threaded portion is formed on a surface of the engaging portion facing the threaded portion.