JPS5853604Y2 - Control knob mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the mounting structure of a control knob in a switching control device.

Generally, control panels for electrically controlled equipment such as refrigeration equipment, machine tools, etc. are equipped with a bush type switching control device for switching operations.

For example, as shown in FIG. 1, this device 1 has a T-shaped link 3 rotatably supported on a frame (not shown) or the like by a pin 2, and a control wire is attached to the central arm 4 of this link 3. 5 are connected to each other, and driving frames 7 and 8 are connected to both ends of the base culm 6 with pins through elongated holes 9 and 10, respectively.

Therefore, when the control knob 11 or 12 fixed to the -force drive frame 7 or 8 is pressed, the protrusion amount of the other force drive frame is equal to the amount of suppression.

For this reason, the length of the control knob protruding from the panel 13 inevitably becomes large, and if this control panel is installed facing the passageway, there is a risk that people or objects passing through the passageway will get caught, and the design However, it cannot be said that it is desirable.

Therefore, the present invention aims to shorten the protruding length of the control knob and provide a support structure for the control knob that does not get in the way and has an excellent design. The movement stroke of the frame is not directly transmitted to the control knob, but is absorbed to some extent within the knob, thereby shortening the protrusion length of the control knob.

Hereinafter, one embodiment of the control knob mounting structure according to the present invention will be described with reference to the drawings.

As shown in Figures 2 and 3, the control knob A of the present invention
has a protrusion 14 on its outer peripheral surface, and this protrusion 14 contacts the panel 13 to restrict the position of the control knob A so that it does not protrude beyond a predetermined length from the panel.

Further, the center of this knob A has an insertion hole 16 for the drive frame 15, and the drive frame 15 inserted into this insertion hole 16 has a long hole at its tip portion, which has a long diameter in the direction of the longitudinal axis of the rod 15. 1
7.

A pin 19 inserted through a through hole 18 formed in the control knob A is inserted into this elongated hole 17, and a pin 19 is inserted into the drive frame 15.
and knob A are connected.

The tip of this drive frame 15 and the insertion hole 1 of the control knob A
A coil spring 21 is interposed between the knob A and the end wall 20 of the panel 6 to resiliently repel the knob A toward the outside of the panel 13 with respect to the drive frame 15.

Since the external power control knob B has the same structure as described above, the same reference numerals are given a suffix, and the explanation thereof will be omitted.

Next, the effect will be explained.

When the control knob A is pressed in FIG. 2, the stepped portion 22 of the insertion hole 16 of the knob A presses the drive frame 15, and the drive frame 15 starts moving.

This movement is transmitted to the external drive frame 15b via the T-shape sink 3 shown in FIG.

Therefore, on this drive frame 15b side as well, until the protrusion 14b comes into contact with the panel 13, the movement is approximately equal to the amount of movement of the knob A.

However, once the projection 14b of this knob B comes into contact with the panel B, even if there is a displacement on the knob A side, this knob B will not protrude, and the displacement of the knob A will be absorbed by the long hole 17b on the knob B side. will be done.

That is, once the protrusion 14b comes into contact with the panel 13, even if the drive frame 15b moves, the coil spring 21b contracts, the pin 19b only moves within the elongated hole 17b, and the knob B does not protrude any further.

However, in this case, when the movement of the knob A side is completed, the knob B
It is necessary to ensure that the tip of the side drive frame 15b is in just contact with the stepped portion 22b of the insertion hole 16b or in a state where it is not in contact.

If this is not done, the drive frame 15b will directly press the panel 13 via the stepped portion 22b and the projection 14b, which may cause damage.

In this way, the movement of the drive frame 15b is nearing its end,
The fact that it is absorbed by the long hole 17b without being transmitted to the knob B means that the length of the protrusion of the knob B from the panel can be shortened by the absorbed length, and the protrusion of the knob that is in the way can be kept as short as possible. can be taken as a thing.

In addition, if there is a possibility that the spring 20 acts in the state of the knob A shown in FIG. 2 and the drive frame 15 moves to the upper blade in the figure, a spring should be installed in the T-shape sink 3 shown in FIG. It may be provided.

As is clear from the above description, according to the present invention, the movement stroke of the drive frame is not entirely the movement stroke of the drive frame driven by another force, and when the stroke is connected between the control knob and the drive frame, the elongated hole is used. Since the connection is made through the hole, the length of this long hole is absorbed.
As a result, the length of the control knob protruding from the panel can be shortened, and even if a control panel with this knob faces a passageway, it will not become an obstacle when passing through, and the design will be superior. This results in extremely excellent effects.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of a conventional switching control device, Fig. 2 is a longitudinal cross-sectional view of a main part showing an embodiment of the mounting structure of a control knob of the switching control device according to the present invention, and Fig. 3 is a schematic illustration of the control knob of the switching control device according to the present invention. FIG. A, B...Control knob, 3...
T-shape sink, 4... Central arm, 5... Control wire, 6... Base culm, 14, 14b
...Protrusion, 15° 15b... Drive frame, 17, 17b... Long hole, 19° 19b...
...Pin, 21, 21b...Coil spring.

Claims (1)

[Scope of utility model registration request] A T-shaped link is rotatably supported around a pin, and the central arm of the link is connected to the control wire of the controlled part, and the pins are loosely fitted into long holes opened at both ends of the base culm. A switching control device that is connected to a drive frame through the drive frame so that the amount of suppressed displacement by pressing one control knob of the drive frame directly becomes the amount of protrusion displacement of the control knob of the other drive frame, A protrusion provided on the outer periphery of the control knob to restrict the position so that the control knob does not protrude beyond a predetermined length from the panel, and a protrusion provided within the control knob by a length equal to the amount of movement of the drive frame regulated by the position restriction. A long hole formed in the drive frame to enable movement, a pin inserted through the long hole to connect the control knob and the drive frame, and a spring that resiliently repels the control knob against the drive frame toward the external force of the panel. Control knob mounting structure.