JPS6214574Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the mounting structure of a switch that is mounted on a switch base disposed on a panel of equipment such as an electric washing machine.

Figure 1 shows part of the external appearance of a conventional general electric washing machine, where 1 is the main body, 2 is the panel section, 3 is the switch base, 4 is the operation knob, and 5 is the operation section for other switches. .

FIG. 2 is a cross-sectional view taken along the Y-Y line in FIG.
The upper tongue piece 8 is fixed by a screw 11 to a boss portion 10 formed protruding from the switch base 3. 12 is a decorative board with markings etc.
It is attached to the surface of the switch base 3.

13 is an operating shaft protruding from the switch 6, into which a pin 14 is driven. The operation shaft 13 is provided with a stepped portion 15 and a small diameter screw portion 16 extending therefrom. Reference numeral 17 denotes a pointer whose movement is restricted by a stepped portion 15 and is fitted into the operating shaft 13. It also has a groove 18 into which a pin 14 is fitted, and is prevented from becoming stiff by fitting therein. A nut 19 is inserted into the operating knob 4, and is screwed into the small diameter threaded portion 16 of the operating shaft 13 to sandwich the pointer 17 between it and the stepped portion 15. 20 is a decorative plate for the operation knob 4. 21 is a boss portion of the pointer 17 that includes the pin 14. Reference numeral 22 denotes an opening bored in the switch base 3, through which the boss portion 2 of the pointer 17 is opened.
1 is inserted therein, and has a large diameter so that it can rotate.

In the above configuration, it is assumed that the panel portion of an electric washing machine or the like may be flooded with water using a hose or the like, or may be installed on a balcony or the like and may be exposed to rainwater or the like.

In such a case, water enters into the panel from between the pointer 17 and the decorative board 12 as shown by the arrow. and,
Water entering from the opening 22 of the switch base 3 is
It scatters in all directions, wets the inside of the panel, and touches the nearby switch 5, leading to a decrease in safety due to poor insulation, and requiring consideration to waterproof each part of the panel. It was difficult to take preventive measures. Therefore, Utsukai Showa 51-118070
As shown in the publication, there are some models in which the opening provided in the switch base is closed with a waterproof cover that covers the top surface of the switch body and fits the operating shaft in a liquid-tight manner. This requires a number of members, which reduces workability.

In view of the above problems, the present invention reliably prevents water from entering the panel without requiring any separate components.
The embodiment will be described below with reference to FIGS. 3 and 4. Note that in this figure, the same reference numerals as those in FIGS. 1 and 2 indicate the same members having the same functions, and therefore the description thereof will be omitted. The most important feature of the present invention is that in order to prevent water from entering the panel section 2, a bottomed recess is formed in the switch base, and an opening is provided in this recess, and a surface of the switch is formed so as to close the opening at the bottom of the recess. It's because I brought them into contact. That is, 23
is a bottom part formed integrally with the switch base 3 at the lower end of the opening 22, thereby forming a bottomed recess, and the bottom part 23 of this recess has the switch 6 mounted thereon.
The upper surface 24 of is brought into contact with the upper surface 24 of. Specifically, by inserting the lower tongue piece 7 of the switch 6 into the hook part 9 and fixing the upper tongue piece 8 to the switch base 3 with the screw 11, the bottom part 23 and the upper surface 2 of the switch 6 are connected.
4 are in contact with each other. At this time, the upper surface 2 of the switch 6
4 presses the bottom surface 23 of the recess, but since it is a bottomed recess, deformation of the bottom surface 23 due to external force can be suppressed, increasing the liquid tightness between the bottom surface 23 and the top surface 24,
This reliably prevents water from entering the panel. Furthermore, when attaching or disassembling the switch 6 to the switch base 3, the tongue piece 7 rotates so that the switch 6 rotates using the tip 25 of the hook part 9 as a fulcrum, and the small diameter screw of the operating shaft 13 16 or the distance A from the tip of the pin 14, an opening 26 through which the opening 26 passes is provided in the bottom surface 23 of the switch base 3. Further, in the hole 26, the distance B from the center of the operating shaft 13 is set to B<C with respect to the distance C from the top surface of the switch 6.
After the switch 6 is attached to the switch base 3, the bottom surface 23 of the switch base 3 and the top surface 24 of the switch 6 are completely in contact with each other, and no water can enter into the panel section.

As described above, according to the present invention, a reliable waterproof structure can be obtained simply by abutting the top surface of the switch against the bottom surface of the bottomed recess provided in the switch base.
Moreover, by creating a bottomed recess without attaching a separate component such as a waterproof cover, the top surface of the switch can contact the bottom surface of the bottomed recess in a liquid-tight manner, reducing the amount of work required to install a separate component while allowing water to enter. prevention can be reliably suppressed.

[Brief explanation of the drawing]

Fig. 1 is a partial external perspective view of a conventional general washing machine, Fig. 2 is a sectional view taken along YY line in Fig. 1, and Fig. 3 is a sectional view showing the switch mounting structure in an embodiment of the present invention. FIG. 4 is a view taken along line XX of FIG. 3 along arrows. 2...Panel section, 3...Switch base, 6...
...Switch, 13...Operation shaft, 23...Bottom part,
24...Top surface (of the switch), 26...Opening.

Claims (1)

[Scope of utility model registration request] A switch mounting device in which a switch is mounted inside a switch base disposed on a panel of a device, and an operating shaft protrudes to the upper surface of the switch through the switch base, the switch base having a bottomed recess integrally formed therein. and an opening through which the operating shaft can be inserted is provided in the bottom of the bottomed recess, and the opening is closed by bringing the top surface of the switch into contact with the bottom of the bottomed recess of the switch base. A switch mounting device characterized by: