JPS647286Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the measurement of air temperature and liquid temperature (water temperature) using a spiral bimetal thermometer. Conventionally, bimetal molded into a spiral shape has generally been used for temperature measurement, and bimetal thermometers for liquid measurement have a spiral bimetal inside a protective tube, as shown in Figure 2. A spiral bimetal is generally used, with one end fixed in a protective tube and a pointer attached to the other end.Due to its shape, the spiral bimetal was considered unsuitable for measuring liquids. The present invention has been devised so that it can be used to measure the temperature of not only gases but also liquids, especially water. That is, as shown in FIGS. 1 and 3, a circular convex bearing tube 3 is inserted into a hole in the center of the scale plate 8 and passes through a hole in the pointer shaft 2 at the center, and protrudes from the back surface of the scale plate 8. A pre-drilled hole is inserted into the horizontal surface of the L-shaped plate 5 formed into an L-shape into the shaft of the protruding bearing sleeve 3, and the shaft is further tightened onto the shaft of the protruding bearing sleeve 3. Press-fit the ring 4 and tighten the tightening ring 4.
and the shaft portion of the bearing sleeve 3 are fixed together by caulking, soldering, etc. Through the above assembly, the L-shaped plate 5 is fixed to the scale plate 8. Further, in the vertical surface portion of the L-shaped plate 5, there is a rectangular hole slightly larger than the cross section of the plate of the spiral bimetal 1, that is, a hole for supporting the outer peripheral end portion 7 of the spiral bimetal 1. It is assumed that a support hole 6 is provided. On the other hand, the center end of the spiral bimetal 1 is fixed to the end of the pointer shaft 2 so that it is perpendicular to the pointer shaft 2. It is assumed that it is bent outward in a direction perpendicular to the tangent. The tip of the pointer shaft 2 to which the spiral bimetal 1 is fixed is inserted into and penetrates the pointer shaft hole of the bearing tube 3 attached to the scale plate 8, and the outer peripheral end portion 7 of the spiral bimetal is Support hole 6 of template 5
shall be inserted within. Then, by press-fitting and attaching the hook seat 17 of the pointer 6 to the tip of the pointer shaft 2 which penetrates the bearing tube 3 and protrudes to the front side of the scale plate 8, the indicator device of the spiral bimetal 1 is completed. is attached to the scale plate 8. Next, the pointer 16 is replanted and adjusted using hot water and a reference thermometer so that the displacement of the spiral bimetal 1 matches the temperature scale 23 on the scale plate 8, so that it can be used as a thermometer. It will be possible. The above is a known structure of the indicating device section of a spiral bimetal thermometer. Using this indicating device, the structure of the present invention will be described as follows: The scale plate to which the indicating device of the spiral bimetal 1 is attached A ventilation hole 12 of an appropriate size is provided in the part where the temperature scale 23 of No. 8 is not written, and it is mounted inside the instrument case 18 with mounting screws 10. Further, as shown in FIG. 5, a hole slightly smaller in diameter than a human fingertip, that is, a water passage hole 11, is provided at an appropriate position on the bottom surface of the instrument case 18. Also, referring to FIGS. 3 and 6, when water 22 is injected into the instrument case 18 through the water passage hole 11 with the scale plate 8 in the horizontal position, the water level will rise to the spiral bimetal 1. Beyond the part
In addition, a hole of an appropriate size, that is, a drainage hole 9, is provided in the side surface of the instrument case 18 corresponding to a position below the position of the scale plate 8.
Further, a see-through plate 13 is interposed between the instrument case 18 and the wedge-in cover 15 for the purpose of protecting the pointer 16. As shown in the front view of FIG. 4, the transparent plate 13 is partially cut out to have a circular cutout shape.
This portion is designated as the ventilation window 14. In this case, the ventilation window 14 may be formed by making a circular hole large enough to provide a ventilation effect in the central part of the see-through plate 13 in a portion corresponding to the hook seat 17 of the pointer 16. Furthermore, a hanging hole 19 is provided in the flange portion of the instrument case 18 because a hanging hole is required when the meter case 18 is attached to a wall or the like. Next, to explain the effect of the main idea,
According to the present invention having the above-mentioned structure, when the instrument is attached to a wall or the like indoors by passing a nail or the like through the hanging hole 19 and used for temperature measurement, for example, when the temperature rises, the hot air flow can be seen through the instrument case 18 from the outside. Board 13
It enters through the ventilation window 14 of the scale plate 8, and further flows into the spiral bimetal 1 serving as the heat-sensing element through the ventilation hole 12 of the scale plate 8, so that the bimetal is immediately sensitized and displaced, causing the temperature scale on the scale plate 8 to change. 23 will be specified by guideline 16. This has the advantage that it can be used not only for measuring room temperature, but also for measuring temperature inside the refrigerator by installing it inside the refrigerator.

In addition, the thermometer of the present invention can be used for measuring liquid (water) temperature,
When in use, for example, when measuring the temperature of bath water, as shown in Figure 6, place your thumb on the push-in cover 15 of the proposed thermometer and press the instrument case 18 with your index finger. Holding the bottom of the water, submerge the entire instrument case 18 into the hot water above the hot water level, then place the tip of your index finger on the water passage hole 11 to close the hole, and while holding the instrument case 18 in a horizontal position, Outside the hot water,
When lifted, the hot water 22 flows out of the instrument case 18 through the drain hole 9, the hot water 22 that had filled the scale plate 8 disappears, the scale becomes easier to read, and the water level of the hot water 22 reaches the level of the drain hole 9. The height of the position, that is, between the scale plate 8 and the spiral bimetal 1,
The spiral bimetal 1 indicates the temperature of the hot water 22 remaining in the instrument case 18. In this case, if the see-through plate 13 becomes clogged with hot water vapor and the temperature reading becomes unclear, the see-through plate 13 may be removed. Conventionally, when measuring hot water temperature using a straight cane-shaped bimetal thermometer as shown in Figure 2, in a dark place, one had to bring one's face close to the water surface and read the scale. However, in the thermometer of the present invention, the hot water 22 is brought to a bright place and the scale is read, so there is no misreading, it is accurate, and it is easy to read. In addition, when used for the blind, as shown in Fig. 4, there is a concave or convex scale line, that is, a finger scale plate, on the circumferential edge of the fold-in cover 15 so that it can be read with the touch of a fingertip. 20 corresponding to the temperature scale 23 of the scale plate 8, and screw-in cover 15.
By removing the see-through plate 13, inserting it into the instrument case 18, aligning the temperature scale 23 of the scale plate 8 with the finger scale line 20, and fixing it with a set screw, etc., the blind person can When reading the degree, use the index finger of your right hand to block the water passage hole 11, place the tip of your right thumb on the surface of the seat 17, and fix the pointer 16 so that it does not move, and use the index finger of your left hand to It is sufficient to point the tip of the pointer 16 and read the corresponding finger scale line 20 at this position. Further, in this case, as shown in FIG. 5, by fitting the rubber stopper 21 into the water passage hole 11, the operation can be made even easier.

In this way, not only ordinary people but also blind people can
It also has the effect of being able to measure the air temperature and bath temperature.
After measuring the liquid (water) temperature, it is desirable to shake the instrument case 18 well to remove moisture adhering to the inside. Also, after measuring the water temperature, you can hang it on a wall or the like and use it to measure the air temperature, as it has good ventilation.
A side effect occurs in that moisture adhering to the bimetallic part naturally evaporates and dries. It is also desirable to use a spiral bimetal 1 made of a material that does not easily rust. If possible, do not use iron, or use plated metal, or brass or aluminum, and the instrument case 18 should be made of synthetic resin, which makes it more difficult for heat to escape to the outside than metal. desirable. As above,
This thermometer can be used as an indoor thermometer or a thermometer for refrigerators or drying cabinets for measuring air temperature, and can be used to measure liquid (water) temperature by sampling the liquid and reading the temperature in a bright place. The temperature reading becomes accurate, and it can also be used by blind people.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the main project, a partially cutaway view, and Figure 2
The figure is a side cross-sectional view of the conventional product, Figure 3 is a side cross-sectional view of the present invention, Figure 4 is a front view of the present invention, Figure 5 is a back view of the present invention, and Figure 6 explains the operating state of the present invention. Side sectional view. 1: Spiral bimetal, 2: Pointer shaft, 3: Bearing sleeve, 4: Tightening ring, 5: L-shaped plate, 6: Support hole,
7: Spiral bimetal outer peripheral end, 8: Dial plate,
9: Drain hole, 10: Mounting screw, 11: Water hole, 1
2: Ventilation hole, 13: Transparent plate, 14: Ventilation window, 1
5: Nejikomi cover, 16: Pointer, 17: Shuza,
18: Instrument case, 19: Hanging hole, 20: Finger scale line, 21: Rubber stopper, 22: Water or hot water.

Claims (1)

[Scope of utility model registration request] A scale plate 8 equipped with a spiral bimetal 1 indicating device with a pointer 16 attached thereto and provided with a ventilation hole 12
into the instrument case 18, and install the instrument case 1 into the instrument case 18.
A water hole 11 is provided at the bottom of the dial 8, and the scale plate 8 is
Water is injected into the instrument case 18 from the water hole 11 while the instrument case 18 is held in a horizontal position, and the water level exceeds the spiral bimetal 1 part and corresponds to the position where the water level is lower than the scale plate 8. A see-through plate 13 with a drainage hole 9 provided on the side surface and a ventilation window 14 provided on the scale plate 8 is placed on the edge of the case 18,
It is fixed and configured with a fold-in cover 15,
Spiral type bimetal thermometer for measuring air temperature and liquid temperature.