阅读说明：本技术 一种内盘在外盘内平稳转动的罗盘装置 (Compass device with inner disc capable of stably rotating in outer disc ) 是由 王明奎 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种内盘在外盘内平稳转动的罗盘装置,涉及一种罗盘装置领域。本发明解决目前罗盘内盘与外盘相对转动不平稳的问题。该内盘在外盘内平稳转动的罗盘装置的转圈环的上端面及下端面分别设置有上滚动球滚动及下滚动球滚动,天池的海底线由雕刻机依据刻度盘的0°至180°方向刻画对齐。使用本发明结构简单、安装方便、平稳转动且测量准确。(The invention discloses a compass device with an inner disc capable of stably rotating in an outer disc, and relates to the field of compass devices. The invention solves the problem that the relative rotation of the inner disk and the outer disk of the existing compass is unstable. The upper end surface and the lower end surface of a rotating ring of the compass device with the inner disk stably rotating in the outer disk are respectively provided with an upper rolling ball and a lower rolling ball, and the sea bottom line of the sky pond is carved and aligned by an engraving machine according to the direction of 0-180 degrees of the dial scale. The invention has simple structure, convenient installation, stable rotation and accurate measurement.)

1. A compass device with an inner disc rotating stably in an outer disc comprises a top plate, the inner disc and the outer disc, wherein the top plate comprises a thimble, a magnetic needle, a sea bottom line, a cylindrical outer box and a glass cover; the inner disc comprises a dial, the outer disc is square, and crystal lines penetrating through the middle positions of the outer sides of four edges of the outer disc form ten lines of the center of the sky, namely a positioning line, and the inner disc is cylindrical, a sky pond is arranged in the middle of the upper end surface of the cylindrical inner disc, the upper end surface of the cylindrical inner disc is positioned on the outer side of the sky pond and is used for engraving the dial marked by the engraving machine, and the seabed lines of the sky pond are engraved and aligned by the engraving machine according to the direction of 0-180 degrees of the dial; a circular rotating ring is fixedly arranged in the middle of the outer side of the cylindrical inner disc, a plurality of upper ball grooves in which upper rolling balls roll are arranged on the upper end surface of the rotating ring, and the upper ball grooves are semicircular; the lower end surface of the rotating ring is provided with a plurality of lower ball grooves for rolling the lower rolling balls, and the lower ball grooves are semicircular;

the outer disc is provided with a face disc and a chassis, the face disc and the chassis are both square, surrounding plates are vertically fixed on the periphery below the face disc, positioning lines are fixed on central holes of all sides of the face disc, and the chassis is positioned in the surrounding plates and fixed with the face disc through screws; the lower end of the face plate and the upper end of the chassis are provided with an upper rotating ring and a lower rotating ring which correspond to each other, the upper rotating ring and the lower rotating ring are respectively in a convex circle shape on the inner side of the face plate and the inner side of the chassis, and the end surfaces of the upper rotating ring and the lower rotating ring in the circle shape are respectively provided with an upper track and a lower track on which an upper rolling ball and a lower rolling ball roll.

2. The compass device for smooth rotation of an inner disc in an outer disc according to claim 1, wherein the upper ball grooves of the upper end surface of the swivel ring are arranged in groups of three to five, the upper ball grooves of the upper end surface of the swivel ring are arranged in four groups, and the upper ball grooves of each group are equally spaced; the lower ball grooves on the lower end surface of the rotating ring are arranged into three to five groups, the lower ball grooves on the lower end surface of the rotating ring are arranged into four groups, and the lower ball grooves in each group are equidistantly spaced.

3. The compass device of claim 1, wherein the cylindrical inner plate has three fixing screw holes at the middle part, i.e. right under the zenith, the compass is fixed on the tripod through the pan-tilt, and the pan-tilt is fixed on the fixing screw holes of the inner plate through screws.

4. The compass device with an inner disk rotating smoothly inside an outer disk according to claim 1, wherein an annular sleeve cover with an outer thread on the outer side is arranged between the upper end of the cylindrical outer box of the Tianchi and the glass cover, and an inner thread corresponding to the outer thread of the sleeve cover is arranged on the inner wall of the top of the cylindrical outer box; the upper end face of the sleeve cover is provided with a semi-arc-shaped convex pressing plate, the inner side of the pressing plate is provided with a supporting groove corresponding to the size of the glass cover, and the glass cover is fixedly adhered to the supporting groove of the sleeve cover through glue.

Technical Field

The invention relates to a compass device, in particular to a compass device with an inner disk capable of stably rotating in an outer disk.

Background

The compass used by people 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 dial on the inner disc is fixed with the upper end of the cylindrical outer box on the top pond; the outer disc is usually square, and crystal lines passing through central holes on the outer sides of four sides of the outer disc form ten celestial centers, namely positioning lines. When a compass is used to measure a target object, it is usually necessary to align the magnetic needle with the sea bottom line and then align the target object with the positioning line to read the mark of the corresponding dial below the positioning line.

However, the compass used by people is usually that the inner disc is directly embedded in the outer disc, and when the inner disc rotates relative to the outer disc, the inner disc is difficult to keep a horizontal state all the time in the rotating process; if the inner disc is embedded into the outer disc through the bearing, the bearing comprises the inner ring and the outer ring, so that the bearing is used for assisting the inner disc and the outer disc to rotate relatively, the manufacturing cost is increased, the weight of the compass is increased, and the inner disc and the outer disc of the compass are not convenient to disassemble; if the inner disc is embedded into the outer disc through the thrust ball bearing, because a plurality of rolling balls in the middle of the thrust ball bearing are all distributed in each ball hole of the support body, the bearing used as a compass is usually made of alloy, the ball holes of the support body positioned in the middle of the thrust ball bearing can only be in a straight cylinder shape, namely, the rolling balls can go in and out from the straight cylinder shape ball holes, therefore, the compass is fixed on the support body, the inner disc can be directly pressed on the outer disc or the outer disc directly presses the inner disc, and the rotating effect of the thrust ball bearing in the compass is lost.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the compass device which has a simple structure, is convenient to install and can accurately measure and stably rotate an inner disk in an outer disk.

In order to achieve the purpose, the invention provides a compass device with an inner disc rotating stably in an outer disc, which comprises a top plate, the inner disc and the outer disc, wherein the top plate comprises a thimble, a magnetic needle, a sea bottom line, a cylindrical outer box and a glass cover; the inner disc comprises a dial, the outer disc is square, crystal lines penetrating through the middle positions of the outer sides of four edges of the outer disc form ten lines of the center of the sky, namely a positioning line, the inner disc is cylindrical, a sky pond is arranged in the middle of the upper end face of the cylindrical inner disc, the dial marked by the engraving machine is arranged on the outer side of the sky pond on the upper end face of the cylindrical inner disc, and the sea bottom line of the sky pond is engraved and aligned by the engraving machine according to the direction of 0-180 degrees of the dial; a circular rotating ring is fixedly arranged in the middle of the outer side of the cylindrical inner disc, a plurality of upper ball grooves in which upper rolling balls roll are arranged on the upper end surface of the rotating ring, and the upper ball grooves are semicircular; the lower end surface of the rotating ring is provided with a plurality of lower ball grooves for rolling the lower rolling balls, and the lower ball grooves are semicircular;

the outer disc is provided with a face disc and a chassis, the face disc and the chassis are both square, surrounding plates are vertically fixed on the periphery below the face disc, positioning lines are fixed on central holes of all sides of the face disc, and the chassis is positioned in the surrounding plates and fixed with the face disc through screws; the lower end of the face plate and the upper end of the chassis are provided with an upper rotating ring and a lower rotating ring which correspond to each other, the upper rotating ring and the lower rotating ring are respectively in a convex circle shape on the inner side of the face plate and the inner side of the chassis, and the end surfaces of the upper rotating ring and the lower rotating ring in the circle shape are respectively provided with an upper track and a lower track on which an upper rolling ball and a lower rolling ball roll.

The upper ball grooves on the upper end surface of the rotating ring are arranged into a group of three to five, the upper ball grooves on the upper end surface of the rotating ring are arranged into four groups, and the upper ball grooves in each group are equidistantly spaced; the lower ball grooves on the lower end surface of the rotating ring are arranged into three to five groups, the lower ball grooves on the lower end surface of the rotating ring are arranged into four groups, and the lower ball grooves in each group are equidistantly spaced.

The middle part of the cylindrical inner disc, namely, the right lower part of the sky pond, is provided with three fixing screw holes, the compass is fixed on the tripod through the tripod head, and the tripod head is fixed on the fixing screw holes of the inner disc through screws.

An annular sleeve cover with external threads on the outer side is arranged between the upper end of a cylindrical outer box of the Tianchi and the glass cover, and internal threads corresponding to the external threads of the sleeve cover are arranged on the inner wall of the top of the cylindrical outer box; the upper end face of the sleeve cover is provided with a semi-arc-shaped convex pressing plate, the inner side of the pressing plate is provided with a supporting groove corresponding to the size of the glass cover, and the glass cover is fixedly adhered to the supporting groove of the sleeve cover through glue.

The invention has the beneficial effects that: the compass device with the inner disc rotating stably in the outer disc has a simple structure and is convenient to use; the structure that the upper end surface and the lower end surface of the rotating ring of the inner disc are respectively provided with the rolling balls enables the inner disc and the outer disc to realize relative rotation very stably, so that the measurement error is greatly reduced; the dial and the top pond are integrated, so that the structure is simplified, the 0-180-degree line segment on the dial is accurately aligned with the seabed line on the bottom plate of the top pond, and the split dial is prevented from being repeatedly calibrated when being mounted on the top pond; the glass cover is movably connected with the cylindrical outer box through the sleeve cover, so that the defect that the heaven pool is integral and not detachable when the glass cover is directly adhered to the cylindrical outer box by glue is overcome.

The compass device for smoothly rotating an inner plate in an outer plate of the present invention will be further described with reference to the accompanying drawings.

Drawings

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

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the upper end face structure of the inner disk of the present invention;

FIG. 4 is a schematic view of the lower end face structure of the inner disk of the present invention;

FIG. 5 is an exploded view of the head tank on the inner tray of the present invention;

FIG. 6 is a schematic view of the inner side of the face plate of the present invention;

FIG. 7 is a schematic view of the inside structure of the chassis of the present invention;

fig. 8 is a schematic view of the use state of the present invention.

In the figure: 1. the device comprises a day pond, 2, an inner disc, 3, an outer disc, 4, a sea bottom line, 5, a cylindrical outer box, 6, a glass cover, 7, a dial, 8, a positioning line, 9, an upper rolling ball, 10, a rotating ring, 11, an upper ball groove, 12, a lower rolling ball, 13, a lower ball groove, 14, a face disc, 15, a chassis, 16, a coaming, 17, an upper rotating ring, 18, a lower rotating ring, 19, an upper track, 20, a lower track, 21, a fixing screw hole, 22, a tripod head, 23, a tripod, 24, an external thread, 25, a sleeve cover, 26, an internal thread, 27, a pressing plate, 28 and a supporting groove.

Detailed Description

As shown in fig. 1, 2, 3 and 4, the compass device for stably rotating an inner plate in an outer plate of the present embodiment includes a top plate 1, an inner plate 2 and an outer plate 3, wherein the top plate 1 includes a thimble, a magnetic needle, a sea bottom line 4, a cylindrical outer box 5 and a glass cover 6. The inner disc 2 comprises a dial 7, the outer disc 3 is square, and crystal lines passing through the middle of the outer sides of the four sides of the outer disc 3 form ten paths of the centers of the sky, namely a positioning line 8. The inner disc 2 is cylindrical, the middle part of the upper end face of the cylindrical inner disc 2 is provided with a top plate 1, the upper end face of the cylindrical inner disc 2 is positioned on the outer side of the top plate 1 and is used for engraving a dial 7 of the engraving machine, and the seabed thread 4 of the top plate 1 is engraved and aligned by the engraving machine according to the direction of 0-180 degrees of the dial 7. A circular rotating ring 10 is fixedly arranged in the middle of the outer side of the cylindrical inner disc 2, upper ball grooves 11 for rolling upper rolling balls 9 are formed in the upper end face of the rotating ring 10, the upper ball grooves 11 are semicircular, the upper ball grooves 11 in the upper end face of the rotating ring 10 are arranged into one group of three to five, the upper ball grooves 11 in the upper end face of the rotating ring 10 are arranged into four groups, and the upper ball grooves 11 in each group are equidistantly spaced; the lower end surface of the rotating ring 10 is provided with lower ball grooves 13 for rolling the lower rolling balls 12, the lower ball grooves 13 are semicircular, the lower ball grooves 13 on the lower end surface of the rotating ring 10 are arranged into a group of three to five, the lower ball grooves 13 on the lower end surface of the rotating ring 10 are arranged into four groups, and the lower ball grooves 13 in each group are equidistantly spaced. The dial 7 and the top pond 1 form a whole, namely the inner disc 2, so that the 0-180-degree line segment on the dial 7 is accurately aligned with the seabed line 4 on the bottom plate of the top pond 1, and the split dial 7 is prevented from being repeatedly calibrated and being difficult to realize error-free alignment when being installed on the top pond 1.

As shown in fig. 6 and 7, the outer plate 3 is provided with a face plate 14 and a chassis 15, the face plate 14 and the chassis 15 are both square, enclosing plates 16 are vertically fixed on the periphery below the face plate 14, the positioning lines 8 are fixed on the central holes of the sides of the face plate 14, and the chassis 15 is positioned in the enclosing plates 16 and fixed with the face plate 14 by screws; the lower end of the surface plate 14 and the upper end of the chassis 15 are provided with an upper rotating ring 17 and a lower rotating ring 18 which are corresponding, the upper rotating ring 17 and the lower rotating ring 18 are respectively in a convex circle shape at the inner side of the surface plate 14 and the inner side of the chassis 15, and the end surfaces of the upper rotating ring 17 and the lower rotating ring 18 in the circle shape are respectively provided with an upper track 19 and a lower track 20 for rolling the upper rolling ball 9 and the lower rolling ball 12. As shown in fig. 8, three fixing screw holes 21 are provided in the middle of the cylindrical inner disc 2, i.e. directly under the Tianchi 1, the compass is fixed on the tripod 23 by the tripod head 22, and the tripod head 22 is fixed on the fixing screw holes 21 of the inner disc 2 by screws. The structure that the upper end surface and the lower end surface of the rotating ring 10 of the inner disc 2 are respectively provided with the upper rolling ball 9 and the lower rolling ball 12 enables the inner disc 2 and the outer disc 3 to realize relative rotation very stably, thereby greatly reducing the measurement error. The rotating ring 10 that sets up on the cylindrical outer box 5 of day pond 1 cooperates last rotating ring 17 and lower rotating ring 18 on face dish 14 and chassis 15 to be fixed in on tripod 23 with fixed screw 21 under the inner disc 2, rotate outer dish 3 and can realize that 8 alignment marks of position line just can direct read-out data, realized calibrated scale 7 and day pond 1 integration again, not only simplified the structure, be convenient for load and unload, but also realized that each part in the day pond 1 is changed or the maintenance provides convenience.

As shown in fig. 5, an annular cover 25 with external threads 24 is arranged between the upper end of the cylindrical outer box 5 of the Tianchi 1 and the glass cover 6, and the inner wall of the top of the cylindrical outer box 5 is provided with internal threads 26 corresponding to the external threads 24 of the cover 25. The upper end surface of the sleeve cover 25 is provided with a semi-arc convex pressing plate 27, the inner side of the pressing plate 27 is provided with a supporting groove 28 corresponding to the size of the glass cover 6, and the glass cover 6 is stuck and fixed with the supporting groove 28 of the sleeve cover 25 through glue. The glass cover 6 is movably connected with the cylindrical outer box 5 through the sleeve cover 25, the defect that the heaven pool 1 is integral and not detachable when the glass cover 6 is directly adhered on the cylindrical outer box 5 by glue is eliminated, and the problem that all parts in the heaven pool 1 are not replaceable is solved.