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Automatic liquid feeding air discharge magnetic compass

A magnetic compass and automatic technology, applied in the field of magnetic compass, can solve the problems of insufficient compass stability and inconvenient use, and achieve the effects of increasing falling force, increasing stability and ensuring stability

Active Publication Date: 2008-11-26
汕尾市城区展辉实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, when the air bubbles are to be discharged to the outer chamber, it is necessary to beat the compass many times to concentrate the air bubbles, so that all the air bubbles can be discharged, which is not convenient to use; in addition, in the case of bumpy road transportation or sea navigation , the stability of the compass is not enough

Method used

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  • Automatic liquid feeding air discharge magnetic compass
  • Automatic liquid feeding air discharge magnetic compass
  • Automatic liquid feeding air discharge magnetic compass

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Embodiment Construction

[0015] The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments.

[0016] Such as figure 1 As shown in Figure 2, the automatic liquid-filling and exhausting magnetic compass of the present invention includes a compass cabinet, which is hinged on a compass basin 2 in the compass cabinet with a rotating shaft 11, a bracket 8, a pin 4, and a floating chamber located in the inner cavity of the compass basin 2. 5 and the compass scale 3, the silicone ring 6, the tempered glass 20 and the orientation ring 30, which are sealed on the upper opening of the compass basin 2, are fixed to the gimbal 6 on the outer side wall of the compass basin 2 with screws 61, which are opened at the bottom of the compass basin 2. The filling hole 24 on the wall and the sealing plug 7 closing the filling hole 24.

[0017] As shown in FIG. 2, the compass basin 2 sequentially includes a three-layer structure from outside to inside: a comp...

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Abstract

The present invention relates to a magnetic compass with the function of automatically charging liquid and discharging air. Said magnetic compass includes the compass cabinet, internal compass basin, external compass basin, upper chamber, lower chamber, liquid-adding hole, air-discharging hole, compass rose and floating chamber, etc. It can raise stability and accuracy of compass.

Description

Technical field [0001] The invention relates to a navigational instrument, in particular to a magnetic compass for indicating the course and the observation direction. Background technique [0002] The existing marine magnetic compasses generally place the compass scale and the floating chamber in the compass basin, and inject liquid into the closed compass basin. This kind of magnetic compass is greatly affected by changes in the outside temperature. When the outside temperature rises, the compass basin expands and the space inside the pelvis expands. Since the liquid expansion is less than the expansion of the compass basin, the pressure in the pelvis decreases and the air follows it. Enter, forming bubbles, affecting the accuracy of the magnetic compass. When the air bubble is too large, the magnetic compass may even fail and become unusable. When the temperature decreases, the compass basin shrinks and the space inside the pelvis shrinks. Because the amount of liquid shrinkag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C17/08
Inventor 何展辉
Owner 汕尾市城区展辉实业有限公司
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