JPH0511245U - Stroke doubling structure of drip-proof switch - Google Patents

Abstract

(57) [Summary] [Purpose] In a drip-proof switch that uses a push-type switch, the movement of the push-knob can be visually identified, and the state of the switch can be known from the height of the push-knob relative to the panel. [Structure] A push knob 6 is supported by a rubber packing 5 that can be held in two positions, an ascending position and a descending position with respect to a panel 3, and a switch 1 is pushed at a position where an end of a shaft 2 of the switch 2 descends. It was arranged so as to contact the lower end of the knob 6. With this configuration, when the push knob 6 is pushed, only the push knob 6 is moved first, and when the stroke is lowered by a predetermined stroke, the shaft 2 of the switch 1 is pushed to switch the contacts. Since the rubber packing 5 maintains its posture even in the inverted state, the push knob 6 is held in the retracted state at this time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drip-proof switch stroke doubling structure that can be applied to a device such as a transceiver that may be used outdoors even in the rain.

[0002]

[Prior Art]

 For devices such as transceivers that can be used outdoors even in rainy weather, it is necessary to have a structure that does not allow rainwater or other substances to enter inside through the gaps between cases or panels, and each part has been devised. ing.

FIG. 3 shows the structure of a push knob portion of a conventional transceiver. In the figure, 1 is a push-type switch (hereinafter referred to as a switch), and 2 is its axis. The switch 1 closes a contact (not shown) when the shaft 2 is pushed, and the switch 1 is turned off when the shaft 2 is pushed again. Reference numeral 3 denotes a panel provided on the front surface of the case (not shown).

A hole 4 is formed in the panel 3, and an upper end of a rubber packing 5 having an intermediate portion formed in a bellows shape is fitted into the hole 4. A rod-shaped push knob 6 is inserted into the inside of the rubber packing 5, and the lower end of the rubber packing 5 is fitted in an annular groove 7 formed in a part of the outer periphery of the rubber packing 5 to form a drip-proof structure. There is. A recess 8 is formed at the lower end of the push knob 6, and the upper end of the shaft 2 is located in the recess 8 and comes into contact when the push knob 6 descends.

In the conventional drip-proof switch having such a structure, the push knob 6 is held at a fixed position with respect to the panel 3 by the elasticity of the rubber packing 5, and is held in the state shown in FIG. When the push knob 6 is pushed in this state, the push knob 6 extends the rubber packing 5 and moves it downward in the figure, and pushes the shaft 2 of the switch 1 to switch the internal contact. The shaft then returns to its original position, and the push knob 6 also returns to its original position by the restoring force of the rubber packing 5. When the push knob 6 is pressed again, the same operation is performed and the contact of the switch 1 is switched. If raindrops or the like are splashed from the upper surface of the panel 3, the raindrops pass between the outer circumference of the push knob 6 and the rubber packing 5, and are collected inside the rubber packing 5, and do not enter the inside of the case.

FIG. 4 shows another structure of the conventional drip-proof switch. In this example, a chassis 9 is disposed immediately below the panel 3, and the outer periphery of the rubber packing 5 is held between the panel 3 and the chassis 9. The push knob 6 is located on the upper surface of the rubber packing 5, and the shaft 2 of the switch 1 is in contact with the lower surface of the rubber packing 5. In the drip-proof switch having this structure, when the push knob 6 is pushed, the push knob 6 extends the rubber packing 5 and descends, and pushes the shaft 2 of the switch 1 by a predetermined stroke to switch contacts. Become.

[0007]

[Problems to be solved by the device]

 In both of the two drip-proof switches described above, the stroke of the shaft 2 of the switch 1 is the same as the stroke when the push knob 6 is pushed, and no consideration is given to increasing the stroke. Since the stroke of the switch is generally about 1 mm, in this case, the stroke when pushing the push knob 6 is also 1 mm, and whether the shaft 2 of the switch 1 is pushed by observing the push knob 6 or not. It cannot be determined.

The present invention has been made in view of this point. Even if the stroke of the switch shaft is small, the stroke of the push knob is increased to visually confirm the operating state of the push switch. It is intended to provide a drip-proof switch that is made possible.

[0009]

[Means for Solving the Problems] As a means for solving the above problems, the present invention makes a push knob face an axial end of a switch, and holds the push knob in a drip-proof structure with a rubber packing for a panel. In this drip-proof switch, the push knob is supported by a rubber packing that can be held in two positions, a raised position and a lowered position with respect to the panel, and the switch has its shaft end at the lower end of the push knob when the push knob is in the lowered position. It is arranged so as to be in contact with.

[0010]

[Action]

 With this configuration, the push knob can be held in the raised position and the lowered position with respect to the panel.Therefore, when the push knob is in the raised position, the switch shaft is not pressed, and when the push knob is in the lowered position, the switch is not pushed. When the axis of is pressed, it can be easily identified visually.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1, in which the same members as those in FIGS. 3 and 4 are designated by the same reference numerals. The rubber packing 5 is the most significant feature of the present invention. The rubber packing 5 has an upright portion 5a on the outer peripheral portion, and is sandwiched between the panel 3 and the chassis 9 at this portion, and the push knob 6 is held by the tray portion 5b extending inwardly upward from the portion. I support it. The plate 5b and the push knob 6 are connected to each other by fitting the plate 5b into an annular groove 7 formed in a part of the outer circumference of the push knob 6 as in the case of FIG.

As shown in FIG. 1, the natural shape of the rubber packing 5 after molding is such that the outside of the dish 5b is low and the inside is high. Therefore, this shape will be maintained if no external force is applied. As a result, the push knob 6 is held in a state of protruding with respect to the panel 3. The recess 8 of the push knob 6 and the upper end of the shaft 2 of the switch 1 are separated by a gap d at the position where the push knob 6 is raised in this way. The size of the gap d is set to be about twice the stroke of the shaft 2 of the switch 1, that is, about 2 mm if the stroke of the shaft 2 is 1 mm.

This drip-proof switch configured as described above is no different from the above-mentioned one in pressing the push knob 6 and the shaft 2 of the switch 1. When the push knob 6 is pushed from the state shown in FIG. 1, the push knob 6 first advances by the gap d, and when the gap d disappears, the shaft 2 is pushed to switch the contacts of the switch 1. When the contacts of the switch 1 are switched, the shaft 2 stops at that position due to the internal lock structure. FIG. 2 shows the state. At this time, the rubber packing 5 is in a state inverted from the state shown in FIG. 1, and the push knob 6 is held in a state of being retracted with respect to the panel 3. Next, when the push knob 6 is pushed again, the lock of the switch 1 is released and the shaft 2 rises. At this time, the upper end of the shaft 2 pushes the push knob 6 from below to return it to the position shown in FIG. ..

[0014]

[Effect of the device]

 Since the present invention is the drip-proof switch configured as described above, the stroke of the push knob can be expanded even if the stroke of the switch is small. This makes it possible to use a mini switch with a small stroke to physically move the push knob with a stroke that is twice to 2.5 times that of a handheld transceiver that has no physical space. Therefore, the state of the unevenness on the panel surface becomes clear at a glance. Since small switches can be used, there is plenty of room in the layout of parts inside the case.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention.

2 is a cross-sectional view showing a state where the push knob of FIG. 1 is pushed. FIG.

FIG. 3 is a sectional view of a main part of a conventional drip-proof switch.

FIG. 4 is a cross-sectional view of another example of a conventional drip-proof switch.

[Explanation of symbols]

 1 Switch 2 Axis 3 Panel 5 Rubber packing 6 Push knob

Claims (1)

[Claims for utility model registration] [Claim 1] In a drip-proof switch in which a push-knob is faced to the shaft end of a push-type switch, and the push-knob is held in a drip-proof structure by a rubber packing with respect to a panel, The knob is supported by a rubber packing that can be held in two positions, an ascending position and a descending position with respect to the panel, and the push-type switch is arranged so that its shaft end is in contact with the lower end of the push-knob at the position where the push-knob is lowered. Stroke doubling structure of the drip-proof switch characterized by being installed.