JP3069739U - Compass - Google Patents

Abstract

(57) [Summary] [Problem] For climbing, etc., a skillful combination of a companion magnet and a liquid expansion type thermometer is carried out, so that it is accurate and highly reliable. Provide a compass that can measure the temperature. SOLUTION: A main body (10) of a compass magnet holding a magnetic needle (21) in a rotatable manner is provided with a liquid expansion type thermometer (30) containing a liquid in a glass container.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a compass and more particularly to a compass with a thermometer.

[0002]

[Prior art]

 Generally, compass and mountain climbing is a necessity, and it is common sense to carry it. Also, if you stay in the mountains for a long period of time, the perceived temperature often differs greatly from the actual temperature due to the degree of fatigue and hunger, etc.In fact, even though the temperature is high, you feel cold and wear winter clothes. As a result, sweating causes the body temperature to be deprived by sweat, and the difference between the sensed temperature and the actual temperature is more and more increased. However, it is rare to carry a thermometer for mountain climbing, etc., and it is difficult to properly grasp the outside temperature.

A thermometer capable of easily measuring an accurate temperature includes a liquid expansion type in which the temperature is indicated by expansion of a liquid such as alcohol, and a bimetal type in which a metal plate is warped due to a difference in expansion rate of a composite metal. However, the former liquid expansion method is inexpensive, has a fast response speed, has no deterioration over time, and has an effect on the measurement accuracy and characteristics due to external force (assuming that it is not damaged). Although it has the advantage of no influence and high measurement accuracy, it has the drawback that the liquid is stored in a glass container, so that it is easily damaged when external force is directly applied to the container.

[0004] Compared with the liquid expansion method, the bimetal method is a kind of mechanical measurement method and has a mechanical drive unit or a mechanical drive similar unit, so the price is largely different from that of the liquid expansion method. However, it is not suitable for carrying because it is prone to deterioration over time and the measurement accuracy and characteristics are easily changed by the application of external force. In order to compensate for these drawbacks of the bimetal method, there have been proposed ones housed in a container and those housed in a container together with a protective liquid (stabilizing liquid). It has the disadvantage of being extremely slow, and cannot prevent measurement accuracy and measurement characteristics from being affected by external forces.

[0005]

[Problems to be solved by the invention]

 Therefore, the present invention has been made in view of the above-mentioned problems. Usually, a climbing magnet or the like is skillfully combined with a compass-carrying magnet and a liquid expansion-type thermometer to achieve high accuracy and reliability. It is an object of the present invention to provide a compass having no problem in durability and capable of measuring an accurate temperature as appropriate.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a technical method in which a liquid expansion type thermometer 30 in which a liquid is stored in a glass container is provided on a main body 10 of an azimuthal magnet holding a magnetic needle 21 rotatably. We have taken measures.

Therefore, the compass of the present invention can be used as a compass, as a matter of course, and can be used as a thermometer, and has the function of displaying temperature.

Further, the compass magnet of the present invention has a thermometer 30 attached to a main body 10 made of a tough synthetic resin which does not normally deform. It has the function of protecting the meter.

Next, the invention according to a second aspect of the present invention is to provide a concave portion 3 for accommodating a liquid expansion type thermometer 30 in which a liquid is concavely stored in a glass container in a main body 10 rotatably holding a magnetic needle 21. 2 and a thermometer 30 is housed and fixed in the concave portion 32, and a temperature scale 31 is disposed in the vicinity of the concave portion 32. It is.

[0010] Therefore, the compass according to the present invention has the function of preventing damage because the thermometer 30 is housed and fixed in the recess 32 in addition to the function of the first aspect.

In the present invention, since the temperature scale 31 is provided on the main body 10, the temperature scale 31 may be printed together with the scales of other compass magnets, which is useful for reducing the manufacturing cost.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 10 denotes the main body of the compass. In the embodiment shown in FIGS. 1 to 4, the main body 10 of the compass magnet is constituted by a plate-shaped transparent substrate 10 made of synthetic resin or the like, and a transparent disc-shaped container 20 is rotatably provided on the main body 10. This disc-shaped container 20 is filled with a stabilizing liquid and the magnetic needle 21 is rotatably held and housed in the same manner as a conventionally known compass.

Although the configuration in which the disc-shaped container 20 is rotatably mounted on the transparent substrate 10 is not always clear in the drawing, a circular window hole is usually provided in the transparent substrate 10, and A ring that is inserted into the window hole and is rotatable around the center axis of the window hole and that prevents the disc-shaped container from falling out of the window hole (also serves as an azimuth scale ring indicating an azimuth scale). Or the disk-shaped container 20 is divided into upper and lower parts, and the transparent substrate 10 is fitted on both sides of the transparent substrate 10 so that the transparent substrate 10 is sandwiched on both sides by a flange portion of the disk-shaped container 20 or the like. The only thing that needs to be done is the same as before.

As shown in FIG. 2, the disc-shaped container 20 has an upper portion protruding above the upper surface of the transparent substrate 10, and can be rotated by pinching the disc-shaped container 20 with a fingertip. It is done.

Although a mechanism for holding the magnetic needle 21 is not shown, a shaft needle is erected inside the center of the disc-shaped container 20, and a shaft cap 22 is provided on the magnetic needle 21, and The magnetic needle 21 (via the shaft cap 22) is placed on the same as in the prior art.

The transparent substrate 10 and the cylindrical container 20 are transparent, and when placed on a map, the map can be seen through as in the conventional case. The above-mentioned stabilizing liquid is used for smoothing and stabilizing the movement of the magnetic needle 21. Of course, the stabilizing liquid used is also of a transparent type so as not to hinder seeing through the map.

The transparent substrate 10 is also provided with various scales in the same manner as in the prior art, such as a normal scale 37 in units of millimeters, a scale 36 of 1/25000 which is frequently used for scale reduction of maps, and the like. A scale 38 or the like of 1 / 50,000 is attached, and an azimuth indicating line 39 is also attached. These are usually used by printing means. It is to be noted that the azimuth scale 23 is provided on the outer peripheral portion of the disc-shaped container 20 and the azimuth indicating line 24 is provided on the bottom surface in the same manner as before. In FIG. 1, reference numeral 35 denotes a lens portion, which is used when the map is enlarged and viewed.

In the embodiments shown in FIG. 6 and subsequent figures, the main body 10 is composed of a container part 10a and an opening / closing lid part 10b, both of which are hinged at a part by a shaft 10c, to open and close on the container part 10a. The lid 10b is folded in two.

In the present invention, the main body 10 is provided with a liquid expansion type thermometer 30 in which a liquid is stored in a glass container. In the embodiment shown in FIGS. 1 to 4, a concave portion 32 is provided in the main body 10 made of a transparent substrate, and the thermometer 30 is stored and fixed in the concave portion 32. In the embodiments shown in FIG. 6 and subsequent figures, a concave portion 32 is provided in the opening / closing lid portion 10b, and the thermometer 30 is stored and fixed in the concave portion 32. Although the concave portion 32 may be omitted, it is desirable to provide the concave portion 32 from the viewpoint of easily determining the mounting position of the thermometer 30 and preventing the thermometer 30 from being damaged.

In the invention of the second aspect, a temperature scale 31 is provided near the concave portion 32. In the illustrated example, the concave portion 32 is formed in a concave groove shape, but may be formed in a cut groove shape. As the thermometer 30 housed in the recess 32, a conventional thermometer using alcohol or the like may be used, and the thermometer 30 is housed in the recess 32 while leaving all or a part thereof.

In order to fix the thermometer 30 housed in the concave portion 32, a glue material 33 (including a tape coated with an adhesive on both sides) is usually used. That is, the thermometer 30 may be glued in the recess 32 with the glue material 33. When the concave portion 32 has a kerf shape, one opening end may be closed with a glue material 33 or a caulking material as necessary. When both sides are open, the thermometer may appropriately glue a portion to the side surface of the groove. Further, in addition to using the glue material, a fitting lid 34 (see FIG. 4) or a lid (not shown) may be glued to the outer surface and fixed. When the transparent substrate 10 is thinner than the thermometer 30, as shown in FIG. 6, one end side of the concave portion 32 may be swelled outward and accommodated. It goes without saying that a part may be housed so as to protrude from the recess 32 as shown in FIG.

The temperature scale 31 may be displayed on the transparent substrate 10 together with other scales or the like by printing or the like. In the case of the embodiments shown in FIGS. I just need.

[0023]

[Effect of the invention]

 As described above, the present invention described in claims 1 and 2 can provide a compass that can always accurately measure the temperature because a thermometer is provided on a compass that is normally carried. . In the present invention, a highly reliable compass can be provided because the thermometer is of an inexpensive and accurate liquid expansion type. In addition, since the thermometer 30 is provided in the main body 10, the thermometer can be used for liquid. The filled glass container can also provide a compass that is less likely to be damaged by colliding with another object. In particular, in the case of the second embodiment, the thermometer 30 is more likely to be damaged because it is protected by the concave portion 32. It is few.

In the invention of claim 2, although the thermometer 30 uses a liquid expansion type, the temperature scale 31 is displayed on the main body 10, so that a rise in cost can be minimized. It is possible to provide a compass having a thermometer that can be used.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a compass magnet according to the present invention.

FIG. 2 is a side view.

FIG. 3 is a sectional view of a main part.

FIG. 4 is a sectional view of a main part in another embodiment.

FIG. 5 is a cross-sectional view of a main part in still another embodiment.

FIG. 6 is a cross-sectional view of a main part in still another embodiment.

FIG. 7 is a side view of the embodiment in FIG. 6;

FIG. 8 is a sectional view of a main part of the embodiment in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Transparent substrate 20 Disc-shaped container 21 Magnetic needle 30 Thermometer 32 Depression 33 Glue material 34 Fitting lid

Claims (2)

[Utility model registration claims] An azimuth magnet comprising: a main body (10) of a azimuth magnet holding a magnetic needle (21) rotatably; and a liquid expansion type thermometer (30) containing a liquid in a glass container. . 2. A concave portion (32) for accommodating a liquid expansion type thermometer (30) in which a liquid container is accommodated in a glass container in a main body (10) holding a magnetic needle (21) rotatably. The thermometer (30) is accommodated in the recess (32).
A compass, which is fixed and has a temperature scale (31) in the vicinity of the concave portion (32).