JPH048579Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a snap switch.

More specifically, even if the housing is thrown onto a floor surface, especially a wet floor surface, it is supported by multiple fulcrums and the housing body is raised above the floor surface.
This invention relates to a snap switch characterized by being improved so that it does not get wet by forming a gap between it and the floor surface.

(Prior Art) Various electrical devices used not only in factories but also in ordinary homes are equipped with plugs connected to power sources via electrical cords.
It is common practice to unplug this plug if the electrical device is not to be used for a long period of time.

General electrical equipment is also usually equipped with a hand switch for turning the equipment on and off, but the conditions of the location where the equipment is used, such as the power outlet When there is a long distance between the device and the place where the electrical equipment is used, it is inconvenient to use only a handy on-off switch and a plug, so a connecting electrical cord is often used in the middle.

And this electric cord used in the middle is used to turn on and off the switch.
An on/off snap switch is often installed, and by moving the electrical cord to which this snap switch is attached from place to place, devices can be easily turned on and off at hand.

(Problems to be Solved by the Invention) Various forms of this snap switch are commercially available and are in use, and Fig. 2a is an external view of one example of the conventional type. The housing main body of the snap switch, 2-2- is a movable part of the switch for turning it on and off by sliding it left and right or front and back, and 3-3 is an electric cord attached to both sides of the main body.

FIG. 2b is a sectional view of the same.

When using such a snap switch, there are the following disadvantages.

This won't be much of a problem if the snap switch is installed next to an electrical device, but then there is no point in installing the snap switch.

In other words, the reason why it is necessary to take the trouble to install this snap switch is to turn on and off equipment that is being operated remotely.

Even in such situations, if the snap switch attached to the middle of a long cord is hooked to a space in the middle of the wall or frame, the problems described below will not occur.

Problems occur when such a snap switch is thrown out on the floor, and since it is a snap switch with a portable function, it is extremely common to use it while it is thrown out on the floor. .

By the way, the floor surface is very often wet due to running water for cleaning or water naturally flowing from other places.

It is common knowledge that water is prohibited when using electrical equipment, plug-in switches, etc. in such places.

If a snap switch like the one shown in Figure 2 is thrown out on a wet floor, if there is 1 to 5 mm of water on the floor, the water will immediately enter the internal contacts. It is very dangerous as it shoots immediately.

Also, if there is no water on the floor by 1 to 5 mm and it is just wet, the snap switch housing is usually made of two split molds and assembled with screws, etc.
Since it is not a watertight structure, water can enter the interior through the small gap due to capillary action, so even if a small amount of water causes a shooting accident, there is no change in the danger.

In view of this situation, we conducted intensive research to solve the problems and finally completed the present invention.

(Structure of the invention) In other words, the present invention is such that when the housing is placed or pressed against a horizontal surface, at least two contact points or contact surfaces with the horizontal surface are formed on all surfaces, and the contact points or contact surfaces are formed on the housing. "snap switch" characterized by having a structure that serves as a support point during installation as part of the "snap switch".

Next, the present invention will be explained in detail.

The key point of the snap switch of this invention is that no matter which side of the entire outer circumference of the housing touches the floor, the protruding fulcrum formed on the surface of the housing raises the snap switch body from the wet floor. This is because it prevents you from getting wet.

FIG. 1a shows the appearance of one embodiment of the snap switch of the present invention, and numerals 4-4 indicate a plurality of protrusions that are the key points of the snap switch of the present invention.

FIG. 1b is a sectional view of the same.

These plural protrusions form a plurality of independent contact points or contact surfaces when a floor surface or the like is left still or pressed, and the snap switch body is raised by the height of the protrusions, thereby achieving the above-mentioned effect. This prevents the inside from getting wet and causing a shooting accident even if it is thrown onto a wet floor.

Furthermore, in the snap switch in which the protrusion of the present invention is attached to the housing, when the protrusion is placed on or pressed against a horizontal surface, the state in which contact points or contact surfaces with the horizontal surface are formed at at least two locations means that the contact point is one. It also includes a state in which parts are connected, that is, a case in which a linear contact surface is formed.

Furthermore, a horizontal surface does not have to be a smooth horizontal surface like a water surface, but includes a somewhat rounded surface.

Furthermore, all surfaces are defined as portions corresponding to the outer periphery of a cross section perpendicular to the length direction of the cords when the cords are connected.

In the most common snap switch, this cross section is approximately rectangular or rectangular or oval with rounded sides.

Therefore, if the cross section is approximately rectangular, there are four outer circumferential surfaces.

In other words, protrusions must be provided on the entire surface so that the body can be raised in all cases even if it is thrown while any of these four sides is in contact with the floor. .

The shape of the protrusion provided may be such that the tip thereof is pointed, that is, the contact portion becomes dotted when it comes into contact with the floor surface, or it may be slightly rounded.

However, those with sharp tips are not recommended because they may break or wear out and become ineffective, and people may get injured if they touch them.

Alternatively, the contact portion may have a shape that forms a surface.

As long as there are at least two protrusions on the corner surfaces, it is possible to raise the body, but in order to ensure stability, it is better to have at least three protrusions, preferably at least four, such as on the legs of a table. It's good to have one.

Moreover, it is advantageous for stability to be ensured if at least four protrusions are arranged on the outermost part of the snap switch.

Further, as a variation in the shape of these plurality of projections, fin-like (flange-like) projections may be provided at both longitudinal ends of the snap switch housing.

In this case, the contact portion with the floor surface will be in the form of two substantially parallel lines.

The height of the protrusions provided is 5 to 20 mm, preferably 5 to 10 mm, from each outer surface of the snap switch housing.
About mm is good.

If it is lower than 5mm, there will be insufficient height to raise it,
It is useless if there is a large amount of water on the floor.

On the other hand, if the height is higher than 20 mm, the raised height is perfect, but the design is poor and it may get caught when stored, which is not desirable.

Next, a method for providing this protrusion on the outer surface of the snap switch housing will be described.

The most preferable method is to use a mold to provide projections when molding the housing, which is usually made of plastic, and perform integral molding.

For example, it is also possible to attach a separately molded protrusion using an adhesive, by ultrasonic welding, or by screwing it in, but there is no advantage over integral molding using a mold.

Another option is to bend the wire and fit it in, but this is not preferable because it will rust and break if it gets wet.

Furthermore, it is convenient to attach the above-mentioned fin-like (flange-like) protrusions so that the protrusions can roll on the floor.

[Brief explanation of drawings]

Figure 1a shows one of the snap switches of the present invention.
In the external view showing the embodiment, 4-4 is a protrusion.
Moreover, b is a sectional view. FIG. 2a is an external view of a conventional snap switch. Moreover, b is a sectional view.

Claims (1)

[Scope of utility model registration request] When placed or pressed against a horizontal surface, at least two contact points or contact surfaces with the horizontal surface are formed on all surfaces, and the contact points or contact surfaces serve as supporting points when installed as part of the housing. A snap switch characterized by having a structure.