CN2252329Y

CN2252329Y - Semi-suspension type miniature magnetic compass

Info

Publication number: CN2252329Y
Application number: CN 95244758
Authority: CN
Inventors: 邱镇文
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-25
Filing date: 1995-09-25
Publication date: 1997-04-16
Anticipated expiration: 2005-09-25

Abstract

The utility model relates to a semi-suspension type miniature magnetic compass, in which a rectangular magnet is adhered at the bottom in the main body of a cylindrical or circular floating body, a small cylindrical body is extended below the bottom of the main body of the cylindrical floating body, and a thimble is extended at the top end inside the small cylindrical body; a ball is arranged between the thimble and the inner wall of the small cylindrical body, and the outer circle of the ball is exposed out of the nozzle of the small cylindrical body and causes the outer circle of the exposed ball leans against the bottom inside a sphere of the magnetic compass; the sphere is filled with solution which causes the main body of the floating body to ride on the ball through the thimble in the small cylindrical body and be half suspended in the solution in the sphere of the magnetic compass, therefore, the main body of the floating body is caused to be always in horizontality. The utility model can be used as a direction indicator or a toy.

Description

Half floated miniature magnetic compass

A kind of half floated miniature magnetic compass, the navigational system in the traffic control system of genus road vehicle.

The common navigation magnetic compass that is used on boats and ships or the aircraft, it generally is circular scale with an indication orientation, it below the index dial buoyancy aid, utilize buoyancy aid that index dial is floated, magnet is housed in the buoyancy aid, utilize the interaction of magnet and earth magnetic field boundary, reach indication orientation purpose, this magnetic compass is in order to eliminate because of being contained in aircraft, waving and influence the compass levelness on the steamer, magnetic compass is with one " gimbals " support, make magnetic compass be in horizontality all the time, with the assurance degree of accuracy, but this magnetic compass " gimbals " complex structure, bulky, the cost costliness is made difficulty.

The purpose of this utility model provides a kind of half floated miniature magnetic compass simple in structure that makes magnetic compass place liquid.

The utility model is achieved in that designing a top is carved with the buoyancy aid main body that scale is indicated,

It is a cylinder (or round, down together), one rectangular recess is arranged at the bottom in this cylinder, bonding one rectangular magnets in the groove, be extended with a little cylinder below at the bottom of the cylinder, a thimble is extended on top in the little cylinder, between the inwall of thimble and little cylinder, place a ball, the cylindrical of ball exposes the nozzle of little cylinder, ball and thimble, it between the inwall of little cylinder the contact of rolling, the buoyancy aid main body rides on the ball by the thimble in the little cylinder and makes ball be resisted against bottom in the transparent magnetic compass spheroid, be filled with solution in the spheroid, the buoyancy of buoyancy aid main body nationality hydrotropy liquid and the anchorage force of ball, partly be suspended in the solution in the magnetic compass spheroid, like this, magnet in the buoyancy aid main body and earth magnetic field boundary interact and reach the direction indication purpose, because the buoyancy aid main body just in time rides on the very smooth ball, and the buoyancy aid main body partly is suspended in the interior solution of magnetic compass spheroid, when the magnetic compass spheroid waves, because the action of gravity of ball, make ball point to the earth's core and also be in the interior bottom of magnetic compass spheroid all the time, thereby, the center of gravity of buoyancy aid main body, the earth's core that the center of gravity of ball and ball point to point-blank, thereby make the index dial on buoyancy aid main body top be in horizontality all the time, guarantee the degree of accuracy of direction indication.

The utility model has the advantages that the buoyancy aid main body that is supporting half suspended state in liquid simply with a ball and ball, just constituted a miniature magnetic compass, simple in structure, volume is little, and cost is low, and is easily manufactured.

The utility model has following accompanying drawing, and accompanying drawing is made brief description:

Accompanying drawing 1 is an elevation cross-sectional view of the present utility model.

Accompanying drawing 2 is A-A cross section views of Fig. 1.

Accompanying drawing 3 is that the B of buoyancy aid main body top index dial is to view.

Describe structure of the present utility model and embodiment in detail below in conjunction with accompanying drawing:

In accompanying drawing 1, the buoyancy aid main body 3 that the scale indication is carved with at top is cylinders, one rectangular recess is arranged at the bottom in the cylinder 3, bonding one rectangular magnets 4 in the groove, be extended with a roundlet cylindrical shell 6 below at the bottom of the cylinder, a thimble 5 is extended on top in the roundlet cylindrical shell 6, between the inwall of thimble 5 and roundlet cylindrical shell 6, place a ball 7, the cylindrical of ball 7 exposes the nozzle of roundlet cylindrical shell 6, ball 7 and thimble 5, it between the inwall of little cylinder the contact of rolling, buoyancy aid main body 3 rides on the ball 7 by the thimbles 5 in the roundlet cylindrical shell 6 and makes ball 7 be resisted against bottom in the transparent magnetic compass spheroid 1, be filled with solution 2 in the spheroid 1, there is steam bubble 8 on its top, buoyancy aid main body 3 partly is suspended in the solution in the magnetic compass spheroid with the buoyancy of solution 2 and the anchorage force of ball 7, magnetic compass spheroid 1 is installed in the base or end box of an exquisiteness, just can be as vehicle-mounted or canoe, the trafficator that canoe carries also can be used as gift or toy and uses; Accompanying drawing 2 be the A-A of accompanying drawing 1 to view, as seen from the figure, a rectangular recess is arranged at the bottom of buoyancy aid main body 3 inside, bonding one rectangular magnets 4 in the groove; Accompanying drawing 3 is that the B of Fig. 1 is to view, the scale mark and the numeral of 0-360 degree are arranged around the top of expression buoyancy aid main body 3, form a circular scale, because the refraction action of liquid, make scale and numeral on the buoyancy aid main body obtain amplification, be more convenient for the driver and see deflection clearly.

Claims

1, a kind of half floated miniature magnetic compass, it is characterized in that, the buoyancy aid main body (3) that the scale indication is carved with at top is a cylinder (or round, down together), one rectangular recess is arranged at the bottom in the cylinder (3), bonding one rectangular magnets (4) in the groove, be extended with a little cylinder (6) below at the bottom of the cylinder, a thimble (5) is extended on top in the little cylinder (6), between the inwall of thimble (5) and little cylinder (6), place a ball (7), the cylindrical of ball (7) exposes the nozzle of little cylinder (6), ball (7) and thimble (5), it between the inwall of little cylinder the contact of rolling, buoyancy aid main body (3) rides over ball (7) by the thimble (5) in the little cylinder (6) and goes up and make ball (7) to be resisted against a transparent interior bottom of magnetic compass spheroid (1), be filled with solution (2) in the spheroid (1), buoyancy aid main body (3) partly is suspended in the solution in the magnetic compass spheroid with the buoyancy of solution (2) and the anchorage force of ball (7).