JPS622501Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water level gauge for water heater tanks, jars, pots, etc.

Jars, pots, and oil storage tanks have transparent communication pipes made of glass, synthetic resin, etc. attached to their containers, and are used as water level gauges to detect the water level inside the container. In order to make it easier to see the location of the water surface inside this communicating pipe, a white board or a striped board is placed behind the communicating pipe, but depending on the direction in which the water surface is observed, it may be difficult to see the water surface. There is.

The object of the present invention is to provide a water level gauge that allows the water level to be easily seen and that can clearly indicate full and low water levels.

An embodiment of the water level meter according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a perspective view of an embodiment of the present invention. In the figure, 1 is a transparent communicating tube whose upper and lower ends communicate with a container (not shown) through horizontal tubes 1' and 1''. 2 is a disk whose outer diameter is slightly smaller than the inner diameter of the communicating tube 1. It is a permanent magnet magnetized in the radial direction, and its outer surface is equally divided into two parts in the direction of magnetization, and is shaped into a semi-cylindrical plate with different colors, for example, N.
The pole side is colored red and the south pole side is colored green.
Reference numeral 3 denotes a disk-shaped float with an outer diameter that can be loosely inserted into the communication pipe 1, and has sufficient buoyancy to move the magnet 2. 4 is a round bar-shaped permanent magnet with a length slightly shorter than the length of the communicating tube 1, and as shown in Fig. 2, it is radially rotated approximately 180 degrees around its axis from the upper end to the lower end. It is magnetized so that it rotates, that is, the magnetic poles are spirally shaped.

A float 3 is inserted into the communication pipe 1, and then a magnet 2 is fitted so as to be placed on the float 3. For example, the N pole at the upper end of the rod-shaped magnet 4 is located in front of the communicating tube 1 (in the figure, the right front).
1, and abut against the back surface of the communication pipe 1 and fix it.

The present invention is a water level gauge having such a configuration, and when the inside of the container is dry, the float 3 and the magnet 2 are located at the lower end of the communicating tube 1 as shown in FIG. It is located at a position opposite to the S pole on the front of the lower end of the , so that the S pole colored green faces the front. Magnet 2 seen from the front
is green, indicating that the container is in a dry state. When water is poured into the container, the water level in the communication pipe 1 rises, the float 3 also rises, and the magnet 2 is moved upward.
The magnet 2 moves upward while rotating counterclockwise so that its magnetization direction is exactly opposite to the magnetization direction of the bar magnet 4. For example, when approximately half of the water is stored in the container, the magnetic poles of the magnet 2 are oriented in the left-right direction as shown by the broken lines in Figure 1, and the red on the N-pole side and the green on the S-pole side appear to be approximately equal when viewed from the front. Become. Although the magnet 2 is not shown when it is full of water, as is clear from the above explanation, the N pole (front) of the upper end of the bar magnet 4 and the S pole of the magnet 2 face each other, and the N pole (red side) faces the front. Turn.

In addition, the magnet 2 may be a spherical body as shown in FIG. 3, and the outer surface may be divided into hemispheres in the direction of magnetization and have different colors.

As explained above, in the water level gauge according to the present invention, a disc-shaped magnet receives magnetic force from a bar-shaped magnet in a communicating pipe, rotates and moves up and down with a float, and the outer surface of the magnet when viewed from the front. Since the color changes, the water level in the container can be clearly displayed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a perspective view illustrating the direction of magnetization of the bar magnet in Fig. 1, and Fig. 3 is a perspective view of another embodiment of the magnet fitted into the communicating tube. FIG. 1: Communication tube, 2: Disc or spherical permanent magnet,
3: Float, 4: Rod-shaped permanent magnet.

Claims (1)

[Scope of utility model registration request] A communication tube made of a transparent material attached to the outside of the container and communicating with the bottom of the container is magnetized in the diametrical direction, and its outer surface is divided into at least two equal parts with respect to an axis perpendicular to the magnetization direction. A disc or spherical permanent magnet painted in a different shade is inserted, and a float having enough buoyancy to move the magnet according to changes in the water surface is provided, and the magnet is rod-shaped and the direction of magnetization is perpendicular to its axis. A water level gauge comprising a permanent magnet which is magnetized so as to change spirally along the axis and rotate at least about half a turn between both end faces, and is brought into contact with or in close proximity to the communicating pipe.