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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 stability and inconvenient use of the compass, and achieve the effect of increasing the falling force, increasing the stability and ensuring the stability

Active Publication Date: 2006-01-11
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 in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 and figure 2 As shown, the automatic liquid filling and exhausting magnetic compass of the present invention comprises a compass cabinet, a compass basin 2 hinged in the compass cabinet with a rotating shaft 11, a support 8 positioned in the compass disk 2 inner chamber, a pin 4, a floating chamber 5 and a compass The longitude disc 3, the silicone ring 6, tempered glass 20 and orientation ring 30 that are covered in the upper opening of the compass basin 2, the gimbal 6 that is fixed on the outer side wall of the compass disc 2 with screws 61, and the gimbal 6 that is set on the compass basin 2 bottom wall The filling hole 24 and the sealing plug 7 closing the filling hole 24 .

[0017] Such as figure 2 As shown, the compass disc 2 includes a three-layer structure from outside to inside: a compas...

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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 navigation instrument, in particular to a magnetic compass for indicating course and observing direction. Background technique [0002] Existing navigational magnetic compass generally all is to place compass dial and buoyancy chamber in compass basin, and injects liquid in the closed compass basin. This kind of magnetic compass is greatly affected by the change of external temperature. When the external temperature rises, the compass basin is heated and expands, and the space in the pelvis expands. Since the expansion of the liquid is smaller than the expansion of the compass basin, the pressure in the pelvis decreases, and the air Enter, form air bubbles, affect the accuracy of the magnetic compass. When the air bubble is too large, it can even cause the magnetic compass to fail and cannot be used. When the temperature drops, the compass basin shrinks, and the space in the pelvic cavity shrinks. Because the liquid shrinks...

Claims

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Application Information

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Patent Type & Authority Applications(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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