JPS5852490Y2 - Water level detection device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improved structure of a water level detection device.

For example, a float is rotatably attached to the water tank of a humidifier, and the float is rotated in response to a drop in the water level or the vessel falls over, and a magnet attached to the float is also displaced, and this displacement controls a reed switch. In the case of a humidifier, driving devices such as a blower motor and a vibration source may be magnetically controlled.

When such an aquarium is used for a long period of time in winter, it becomes dirty with limescale and the like, so it needs to be cleaned from time to time, and the floats and the like placed in the aquarium get in the way.

In particular, even if the float can be removed, if its rotating shaft is fixed to the aquarium itself, it will permanently get in the way during such cleaning.

The present invention has been devised in view of the above points, and embodiments thereof will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a water tank, and a reed switch 2 is fixed to the outside of one side of the bottom surface of the tank, and a pair of grooves (not shown) are formed in both side walls of the tank.

3 is a support body consisting of both side walls 4.4, a top wall 5 and a back wall 6;
A curved piece 7.7 is provided on the outer surface of both side walls 4.4 to be inserted into and removed from the groove from above, a handle 8 for insertion and removal is provided on the upper surface of the upper wall 5, and a lower end center of the back wall 6 is provided. A rotary shaft 9, which protrudes to a position above the reed switch 2 inside the support and has a bent tip, is fixed to the support.

Reference numeral 10 denotes a rectangular parallelepiped-shaped magnet disposed above and facing the reed switch 2, which is inserted into a mouth-shaped resin storage body 11 and rotatably fixed to the rotating shaft 9. and is connected to the support 3.

12 is a float connected to this storage body 11 by a connecting rod 13.

A shaft groove 14 having approximately the same shape as a shaft into which the rotary shaft 9 is rotatably fitted in the left-right direction is formed on the inner upper surface of the storage body 11, and the lower surface facilitates insertion of the magnet 10. An incision is made in order to allow the rotating shaft 9 to pass through.

The structure for rotatably fixing the storage body 11 to the rotating shaft 9 will be explained with reference to FIG.
Insert inside.

Then, the storage body 11 elastically holds the magnet 10 from all sides by the restoring force inherent in the resin, and the magnet 10 closes the shaft groove 14 and rotatably supports the rotating shaft 9.

Although the magnet 10 does not fall off due to the holding force of the storage body 11, the edge of the opening of the storage body 11 is melted to form an edge to prevent it from falling off, just in case.

Thus, the magnet 10 acts magnetically on the reed switch 2 as long as the float 12 stands upward.

Further, when the float 12 rotates due to a drop in the water level or the vessel overturns, the magnetic action of the reed switch 2 by the magnet 10 is lost, and the switch 2 stops various drive devices and displays a water shortage or overturning indication.

Furthermore, since the float 12 is normally located in a water-permeable area of the aquarium surrounded by one side of the aquarium 1 and three sides of the support 3, large disturbances may occur on the water surface in other parts of the aquarium 1. This turbulence is not transmitted, so there is no rotation.

Furthermore, when cleaning the inside of the aquarium 1, all devices except the reed switch 2 can be removed at the same time by holding the handle 8 and pulling it up. The entire device can be automatically mounted in a predetermined position, that is, in a position where the magnet 10 faces above the reed switch 2.

In this way, the water level detection device according to the present invention supports a float that rotates according to the water level in the aquarium so as to be rotatable around the rotation axis, and a magnet is attached on the opposite side of the float to the rotation axis to detect a drop in the water level. In cases where the drive device, etc. is magnetically controlled by changing the position of the magnet during a fall, a frame-shaped support is removably attached to the bottom of the water tank, and the inside of the support is The above-mentioned rotary shaft is installed on which the float can be freely rotated in left and right directions, and the drive device can be stopped when the water level in the aquarium drops or when the aquarium is tilted or falls over, and when cleaning, the support can be removed for easy cleaning. It is also possible to prevent the float from malfunctioning even if there is a large turbulence on the water surface in the aquarium.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a water level detection device according to the present invention, and FIG. 2 is an exploded perspective view. 1...Aquarium, 3...Support, 10...
...Magnet, 12...Float.

Claims (1)

[Scope of utility model registration request] A float that rotates according to the water level in the aquarium is supported rotatably around a rotating shaft, and a magnet is attached to the opposite side of the float to the rotating shaft. When the water level drops or the float falls over, the magnet is driven by changing its position. In the apparatus for magnetically controlling the vibration, a rod-shaped support is removably attached to the bottom of the water tank, and the rotary shaft is attached to the inside of the support so that the float can be rotated in left and right directions. A water level detection device characterized by being provided with.