JPS5960835A - Vibration detecting switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides K,
A vibration detection switch that is activated by the vibration is installed in the %busy lighting circuit and lights up immediately when vibration occurs due to an earthquake or the like at night or in a darkened room, making it suitable for vibration detection to ensure safety in the event of a disaster. This is related to the switch button.

Various types of sensors have been proposed to detect when an earthquake occurs. Furthermore, if an earthquake occurs at night or in a darkened room, it is important for safety to first brighten the surrounding area so that evacuation and other appropriate measures can be taken. Conventional.

Switches for this purpose have also been proposed.

It is manufactured by combining a pressure-sensitive earthquake sensor and a relay, and has the drawbacks of having a large number of parts, a complex structure, and a large size.

An object of the present invention is to quickly activate and turn on due to vibrations such as earthquakes, and to easily turn it off.

It is an object of the present invention to provide a vibration detection switch having a simple structure and a small size, which is particularly suitable for being installed in a circuit of a lighting equipment.

The vibration detection switch according to the present invention is characterized by having the following members (1) to (4).

■ A circular conductive bottom plate that has an inverted conical shape and serves as one contact point of the switch.

■ It has an inverted conical shape, and consists of a circular ceiling part whose inverted apex is offset from the position of a perpendicular line passing through the inverted apex of the bottom plate, and a cylindrical side wall part that is continuous with this and has a diameter approximately equal to the diameter of the bottom plate. A conductive cover that forms the other contact of the switch, the lower edge of which is close to the periphery of the bottom plate with a slight gap.

■ A conductive and magnetic ball housed in an air space surrounded by the bottom plate and cover.

■ An annular magnet that surrounds the side wall of the cover and can be lifted upward.

Therefore, in the vibration detection switch according to the present invention, the ball normally located at the inverted top of the bottom plate moves toward the (14I+ wall) of the cover due to vibrations exceeding a certain level, and is fixed in contact with the side wall by the annular magnet. The switch is turned on.
By lifting the annular magnet, the ball returns to the reverse top of the bottom plate due to gravity and is turned off.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vibration detection switch of the present invention will be explained below based on drawings of embodiments. 1 and 2 are vertical sectional views of an embodiment of the vibration detection switch of the present invention in different states.

A circular conductive bottom plate 2 is provided on the bottom of a cylindrical insulating case 4 having a bottom. Terminal 12 from bottom plate 2
has been taken out. Furthermore, a conductive cover 3≠2 that forms the other contact of the switch is fitted into the cylinder of the case 4. The cover 3 is continuous with the circular ceiling part having an inverted conical surface shape.

It consists of a side wall part inscribed in the cylindrical case 4.

The inverted apex of the inverted conical surface of the cover 3 is offset from the position of a perpendicular line passing through the inverted apex of the bottom plate 2. Bottom plate 2 and cover 3
The angles formed between the inverted conical surface and the water surface are shown in FIG. 1 by 0 and θ', respectively. θ, θ′ and will be described later.

The peripheral edge of the bottom plate 2 and the lower edge of the cover 3 are brought close to each other leaving a smaller gap.

The terminal 11 is taken out from the cover 3.

゛　3゛ The air space surrounded by the bottom plate 2 and the cover 3 is conductive.

In addition, a magnetic hole/L/1 hole is accommodated. Normally, the ball 1 is located at the opposite side of the bottom 2 due to gravity, as shown by the solid line in FIG. As an example of a ball exhibiting good conductivity, FIG. 3 shows a cross-sectional view of a ball in which the outer periphery of a magnetic material 1A such as a steel ball is plated with a good conductive material 1B such as copper.

An annular magnet 5 is fitted on the outside of the cylindrical case 4 so as to be able to slide up and down, and is locked by a protrusion of the bottom plate of the case 4 so as to face the side wall of the cover 3 above the periphery of the bottom plate 2. I'm being forced to do it. The annular magnet 5 can be lifted along the cylindrical case 4 until it abuts against the stopper 6.

This vibration detection switch is constructed as described above. If there is a horizontal earthquake, ball 1 will move up the slope of bottom plate 2 first.
Roll up to the position shown by the two-dot chain line in the figure. The angle of the slope is determined by the intensity of the earthquake to be detected. When the ball 1 comes to or near the position of the two-dot chain line in Fig. 1,
It is attracted by the annular magnet 5 and fixed to the side wall of the cover 3.

°　4　.

Therefore, since the bold is also in contact with the bottom plate 2, both contacts 2.
3 are connected and the switch is turned on.

If there is a vertical force, the ball 1 will fly up from the reverse top position of the bottom plate 2. Since the reverse tops of the bottom plate 2 and the cover 3 are offset by an amount S, the ball 1 collides with the slope of the cover 3, is pushed out toward the side wall of the cover 3 by the horizontal force, and is pushed toward the side wall of the cover 3 by the annular magnet 5. At the same time, it is also adhered to the bottom plate 2 by gravity, connecting the two.
The switch is turned on. In order to push the ball 1 to the outer periphery by horizontal force, the inclination angles of the bottom plate 2 and cover 3 are 0 and θ.
′ must be set so that II<II/. Also.

If θ' is set too large, the ball 1 may not reach the outer periphery.

To disconnect the switch, lift the annular magnet 5 as shown in Figure 2. The magnetic force will no longer reach the ball 1, and the ball 1 will be pushed to the bottom plate by gravity as shown by the two-dot chain line in Figure 2. 2 returns to the inverted top position at the center, and the connection between contacts 2 and 3 is broken.

FIG. 4 is a perspective view showing the vibration detection switch of the present invention incorporated into a fluorescent lamp stand.

Since the vibration detection switch 10 of the present invention is small in size, it can be easily incorporated into a fluorescent lamp stand or the like. FIG. 5 is a circuit diagram of the fluorescent lamp stand of FIG. 4.

In FIG. 5, 10 is a switch of the present invention, 13 is a conventional switch, 14 is a ballast, 15 is a fluorescent lamp, and 16 lighting tubes.

As described above, the vibration detection switch of the present invention has a simple structure and is small in size, and is turned on by vibration in any direction with a simple mechanism. Additionally, the switch can be easily turned off by simply moving the annular magnet. Compared to conventional switches that combine sensors and relays, it has fewer parts, has a simpler structure, and can be made smaller.

In addition, since the vibration detection switch of the present invention is provided with an illumination light circuit button, it is immediately turned on when vibration occurs due to an earthquake, etc., and is effective for ensuring safety in the event of a disaster.

[Brief explanation of drawings]

1 and 2 are longitudinal sectional views of an embodiment of the switch of the present invention in different states, FIG. 3 is a sectional view of an embodiment of the pole of the switch φ of the present invention, and FIG. 4 is a sectional view of an embodiment of the switch of the present invention. A perspective view of an embodiment of a fluorescent lamp stand incorporating a switch, FIG.
FIG. 2 is a circuit diagram of the fluorescent lamp stand shown in the figure. 1...Ball %2...Bottom plate, 3...Cover, 4.
...Case, Death...Annular magnet, 10...Sui-Sochi of the present invention.

Claims (1)

[Claims] a circular conductive bottom plate that has an inverted conical shape and serves as one contact of the switch; a circular ceiling part that has an inverted conical shape and whose inverted apex is offset from the position of a perpendicular line passing through the inverted apex of the bottom plate; a conductive cover constituting the other contact point of the switch, comprising a cylindrical side wall part that is continuous with the bottom plate and has a diameter approximately equal to the diameter of the bottom plate, the lower edge of the side wall being close to the periphery of the bottom plate with a slight gap; and a conductive and magnetic bow V accommodated in the air space surrounded by the cover; provided surrounding the side wall of the cover,
It has an annular magnet that can slide upward; the ball located at the inverted top of the bottom plate moves toward the side wall of the cover when it vibrates above a certain level, and is fixed in contact with the side wall by the annular magnet, turning on the switch. , a vibration detection switch characterized in that by lifting an annular magnet, the pole returns to the reverse top of the bottom plate due to gravity and turns off the switch.