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Sextant index mirror

A technology of index mirror and sextant, applied in sextant, instrument, installation and other directions, can solve the problems of falling off of the adjusting screw frame, unable to adjust the lens angle, loosening the adjusting screw, etc., so as to avoid measurement errors and protect the , the effect of reducing maintenance costs

Inactive Publication Date: 2014-01-01
CHANGZHOU HAOMAI MARINE EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tightening adjustment screw loosens after long-term use, causing the entire adjustment screw frame to fall off, and the angle of the lens cannot be adjusted

Method used

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  • Sextant index mirror

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Embodiment Construction

[0012] See figure 1 As shown, an index mirror of a sextant has an index frame 1, the index frame 1 is integrally formed, and the back of the index frame 1 is fixed with a boss 2 that matches the size of the tensioning adjustment screw. ; The boss 2 is a hollow cylinder structure. Its working principle is: only need to connect the tension adjustment screw 3 with the boss 2 through threaded connection, and then the angle of the lens can be adjusted.

[0013] The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

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Abstract

The present invention belongs to navigation mapper equipment, and particularly relates to a sextant index mirror, which comprises an index mirror frame, wherein the index mirror frame has an integral forming structure, and the back surface of the index mirror frame is fixedly provided with a boss having a size matched with a size of a tension adjustment screw. According to the present invention, the separable structure design of the original base and the mirror frame is changed into the integral forming index mirror so as to reduce production cost and improve production quality; and the boss fixed on the index mirror frame is adopted to replace the original adjustment screw frame so as to well protect the tension screw, avoid measurement error caused by loose, and reduce maintenance cost.

Description

technical field [0001] The invention belongs to a navigation surveying and mapping device, in particular to an index mirror of a sextant. Background technique [0002] A sextant is an optical instrument used to measure the angle between two distant targets. It is usually used to measure the angle between the sun or other celestial bodies and the sea level or horizon at a certain moment, so as to quickly know the latitude and longitude of the position of the ship or aircraft. Played a major role in navigation. [0003] Chinese patent CN201837385U discloses the name "A Sextant Index Mirror Device", which has an index mirror base, an index mirror, an index mirror frame, and an index mirror gasket, and the index mirror is supported on the index mirror base by the index mirror frame. Above, the index mirror is socketed in the index frame through the index mirror gasket, the top of the index frame is provided with a fixing device for fixing the index mirror, the back of the inde...

Claims

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Application Information

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IPC IPC(8): G01C1/08G02B7/00
CPCG02B7/00G01C1/08
Inventor 朱亮狄丹岩
Owner CHANGZHOU HAOMAI MARINE EQUIP TECH
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