CN106153022B

CN106153022B - Automatic positioning folding compass

Info

Publication number: CN106153022B
Application number: CN201610810779.2A
Authority: CN
Inventors: 王明奎
Original assignee: Individual
Current assignee: Wang Mingkui
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2020-05-19
Anticipated expiration: 2036-08-31
Also published as: CN106153022A

Abstract

The invention discloses an automatic positioning folding compass, and relates to the field of compass devices. The invention solves the problem that the prior folding compass wastes time because the magnetic needle and the sea bottom line need to be readjusted when measuring each object. A plastic bearing is arranged between the groove of the outer disc of the automatic positioning folding compass and the cylindrical outer box of the heaven pool, the outer ring of the plastic bearing is embedded into the groove of the heaven pool, the inner ring of the plastic bearing is fixedly bonded with the cylindrical outer box of the heaven pool, and the inner disc is fixedly bonded with the upper end of the inner ring of the plastic bearing; a first circular hole is formed in the middle of the outer disc; and a second circular hole is formed in the middle of the base, and the base is fixedly connected with the outer disc. The invention has simple structure, convenient use and time saving.

Description

Automatic positioning folding compass

Technical Field

The invention relates to a compass device, in particular to an automatic positioning folding compass.

Background

Compasses, also known as compasses, are widely used in military, marine, forestry, exploration, construction, and other fields. The compass consists of a top plate, an inner plate and an outer plate, wherein the top plate consists of a thimble, a magnetic needle, a sea bottom line, a cylindrical outer box and a glass cover; the inner disk is an azimuth disk, the azimuth disk is fixed with a cylindrical outer box on the Tianchi, and various contents on the compass are printed on different disk rings of the azimuth disk; the outer disc is usually circular, and crystal lines which penetrate through the periphery of the outer disc and cross the center hole of the outer disc form ten paths of centers of the sky, namely positioning lines for reading contents on the surface of the inner disc. The shell of the folding compass is generally movably connected with the upper cover through a hinge, the outer disk of the compass is fixed in the base, the outer end of the upper cover is provided with a sight, the outer end of the base is provided with a sight, the sight, a square line and the sight are all on the same straight line, the sight and the sight matching square line on the shell can better aim at a standard object after the upper cover is completely opened, and the shell of the folding compass is convenient for carrying outdoors.

However, in the existing folding compass, the zenith is directly embedded into the outer plate, when the folding compass is used, the magnetic needle and the sea bottom line are adjusted to be coincident by firstly aligning the object of the standard through the positioning line, the front sight and the sight on the outer plate of the compass and then rotating the inner plate and the zenith to print the content on the inner plate which appears under the positioning line when the magnetic needle and the sea bottom line are coincident on the same horizontal position, so that the data which needs to be measured is obtained, namely, the object orientation degree can be determined according to the positioning line above the azimuth plate. The same steps still need to be repeated when the next target object is measured, the data is read after the magnetic needle and the sea bottom line are adjusted for the target object, but the data can be directly read after the target object is aligned, and the measuring step of readjusting the coincidence of the magnetic needle and the sea bottom line for different target objects not only brings certain difficulty for beginners, but also causes time waste for frequent users.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the automatic positioning folding compass which is simple in structure, convenient to use and time-saving.

In order to achieve the purpose, the invention provides an automatic positioning folding compass which comprises a top plate, an inner plate and an outer plate, wherein the top plate comprises a thimble, a magnetic needle, a sea bottom line, a cylindrical outer box and a glass cover; the foldable compass comprises a shell consisting of a base and an upper cover which are movably connected by a hinge, wherein a peep door is arranged at the outer end of the upper cover, a bubble level gauge is arranged at the middle part in the upper cover, a sight bead is arranged at the outer end of the base, a plastic bearing is arranged between a groove of the outer disc and a cylindrical outer box of the day tank, the plastic bearing comprises an inner ring and an outer ring, the outer ring of the plastic bearing is embedded into the groove of the day tank, the inner ring of the plastic bearing is fixedly bonded with the cylindrical outer box of the day tank, and the inner disc is fixedly bonded with the upper end of the inner ring of the plastic bearing; a first circular hole is formed in the middle of the outer disc, and the diameter of the first circular hole is smaller than that of the outer ring of the plastic bearing; the middle part of the base is provided with a circular hole II with the same size as the circular hole, and the base is fixedly connected with the outer disc.

The diameter of the first circular hole is equal to that of the cylindrical outer box of the Tianchi.

And a fixed seat is arranged right below the sky pond.

And a fixing bolt hole is formed in the lower end of the fixing seat of the sky pond.

The invention has the beneficial effects that: the automatic positioning folding compass is simple in structure and convenient to use; because the sky pond and the outer plate of the folding compass are movably connected through the plastic bearing, the sky pond is fixed after the magnetic needle and the sea bottom line are adjusted, data can be directly read out according to the position of the positioning line on the inner plate for each target object to be measured later without readjusting the magnetic needle and the sea bottom line, the step of coinciding the magnetic needle and the sea bottom line for each target object is omitted, the positioning line on the outer plate can be rotated to align the target object, and the data can be directly read out, so that the steps are simplified, the time is saved, and the folding compass is convenient for beginners to master.

The automatic positioning folding compass of the invention is further explained with the attached drawings.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the present invention.

In the figure: 1. the sky pond, 2, inner disc, 3, outer dish, 4, cylindrical outer box, 5, location line, 6, recess, 7, plastic bearing, 8, inner circle, 9, outer lane, 10, circular port one, 11, fixing base, 12, bolt hole, 13, base, 14, upper cover, 15, look at the door, 16, bubble spirit level, 17, sight, 18, circular port two.

Detailed Description

As shown in fig. 1 and 2, the automatic positioning folding compass of the present embodiment comprises a top plate 1, an inner plate 2 and an outer plate 3, wherein the top plate 1 includes therein a thimble, a magnetic needle, a sea bottom line, a cylindrical outer box 4 and a glass cover, the inner plate 2 is fixed with the upper end of the cylindrical outer box 4 on the top plate 1, the outer plate 3 is circular, a crystal line passing through the periphery of the outer plate 3 and crossing the central hole of the outer plate 3 forms ten lines of a celestial center, i.e. a positioning line 5, and a groove 6 for installing the top plate is provided in the middle of the outer plate 3. The folding compass comprises a shell consisting of a base 13 and an upper cover 14 which are movably connected by a hinge, wherein the outer end of the upper cover 14 is provided with a peep door 15, the middle part in the upper cover 14 is provided with a bubble level gauge 16, the outer end of the base 13 is provided with a sight 17, a plastic bearing 7 is arranged between a groove 6 of an outer disc 3 and a cylindrical outer box 4 of a tencell 1, the plastic bearing 7 comprises an inner ring 8 and an outer ring 9, the outer ring 9 of the plastic bearing 7 is embedded into the groove 6 of the tencell 1, the inner ring 8 of the plastic bearing 7 is fixedly bonded with the cylindrical outer box 4 of the tencell 1, and the inner disc 2 is fixedly bonded with the upper end of the inner ring 8 of the plastic bearing 7; the middle part of the outer disc 3 is provided with a first circular hole 10, and the diameter of the first circular hole 10 is smaller than that of the outer ring 9 of the plastic bearing 7. The middle part of the base 13 is provided with a circular hole II 18 with the same size as the circular hole I10, and the base 13 is fixedly connected with the outer disc 3. The diameter of the circular hole 10 is equal to that of the cylindrical outer box 4 of the Tianchi 1. A fixed seat 11 is arranged under the heaven pond 1, and a fixed bolt hole 12 is arranged at the lower end of the fixed seat 11 of the heaven pond 1.

The fixed seat 11 right below the sky pond 1 is fixed on a tripod or other support frames, the fixed seat is fixed with a fixed bolt hole 12 through bolts on the tripod or other support frames, a bubble level gauge 16 in an upper cover 14 is adjusted, then a magnetic needle in the sky pond 1 and a sea bottom line are adjusted to be coincident, and then the upper cover 14 or a base 13 is rotated through a sight star 17, a positioning line 5 and a sight 15 so as to measure each target object. When each object is measured, the Tianchi 1 and the inner disc 2 are fixed, the outer disc 3 can rotate around the cylindrical outer box 4 of the Tianchi 1 through the plastic bearing 7, the outer disc 3 and the base 13 are bonded into a whole, the outer disc 3 is driven by rotating the upper cover 14 or the base 13, and the content imprinted on the inner disc 2 below the positioning line 5 is the data to be measured as long as the positioning line 5 on the outer disc 3 is aligned with the object. Therefore, the data can be directly read out according to the position of the positioning line 5 on the inner disc 2 without readjusting the magnetic needle and the sea bottom line for each target object, thereby being convenient for learning and mastering and greatly saving time.

Claims

1. An automatic positioning folding compass comprises a top plate, an inner plate and an outer plate, wherein the top plate comprises an ejector pin, a magnetic needle, a seabed line, a cylindrical outer box and a glass cover, the inner plate is fixed with the upper end of the cylindrical outer box on the top plate, the outer plate is circular, crystal lines which penetrate through the periphery of the outer plate and are crossed with a circle center hole of the outer plate form ten heaven centers, namely positioning lines, and the middle part of the outer plate is provided with a groove for mounting the top plate; the foldable compass comprises a shell consisting of a base and an upper cover which are movably connected by a hinge, wherein a peep door is arranged at the outer end of the upper cover, a bubble level gauge is arranged at the middle part in the upper cover, and a sight bead is arranged at the outer end of the base; a first circular hole is formed in the middle of the outer disc, and the diameter of the first circular hole is smaller than that of the outer ring of the plastic bearing; a second circular hole with the same size as the circular hole is formed in the middle of the base, and the base is fixedly connected with the outer disc; a fixed seat is arranged right below the sky pond; the lower end of the fixed seat of the sky pond is provided with a fixed bolt hole; the fixed seat right below the head-up sink is fixed on a tripod or other support frame and is fixed with the fixed bolt hole through a bolt on the tripod or other support frame; the diameter of the first circular hole is equal to that of the cylindrical outer box of the Tianchi.