CN113639726A - Compass device with inner disc capable of stably rotating in outer disc - Google Patents
Compass device with inner disc capable of stably rotating in outer disc Download PDFInfo
- Publication number
- CN113639726A CN113639726A CN202110977901.6A CN202110977901A CN113639726A CN 113639726 A CN113639726 A CN 113639726A CN 202110977901 A CN202110977901 A CN 202110977901A CN 113639726 A CN113639726 A CN 113639726A
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- disc
- rotating ring
- ball grooves
- end surface
- face
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- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 239000011521 glass Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/32—Undercarriages for supports with three or more telescoping legs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
- G01C17/18—Supporting or suspending compasses, e.g. by gimbal, by flotation
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Instructional Devices (AREA)
Abstract
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.
Description
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.
Claims (4)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977901.6A CN113639726A (en) | 2021-08-17 | 2021-08-17 | Compass device with inner disc capable of stably rotating in outer disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977901.6A CN113639726A (en) | 2021-08-17 | 2021-08-17 | Compass device with inner disc capable of stably rotating in outer disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113639726A true CN113639726A (en) | 2021-11-12 |
Family
ID=78423704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110977901.6A Pending CN113639726A (en) | 2021-08-17 | 2021-08-17 | Compass device with inner disc capable of stably rotating in outer disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113639726A (en) |
-
2021
- 2021-08-17 CN CN202110977901.6A patent/CN113639726A/en active Pending
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