CN202793442U - Digital word wheel of magnetic direct reading instrument - Google Patents
Digital word wheel of magnetic direct reading instrument Download PDFInfo
- Publication number
- CN202793442U CN202793442U CN 201220457245 CN201220457245U CN202793442U CN 202793442 U CN202793442 U CN 202793442U CN 201220457245 CN201220457245 CN 201220457245 CN 201220457245 U CN201220457245 U CN 201220457245U CN 202793442 U CN202793442 U CN 202793442U
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- wheel
- reading instrument
- ring
- main wheel
- magnetic direct
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Abstract
The utility model relates to a digital word wheel of a magnetic direct reading instrument. The digital word wheel of the magnetic direct reading instrument comprises a main wheel with numbers labeled on the side, a semi-ring of an annular magnet serves as N pole, the other semi-ring of the annular magnet serves as an S pole, a shaft installation hole is arranged at the center of the main wheel, a shielding cover is arranged on the left side of the main wheel, the wheel surface on the left side of the main wheel is covered by the shielding cover, a first transmission gear is arranged on the edge of the wheel surface on the left side of the main wheel, and a second transmission gear is arranged on the edge of the wheel surface on the right side of the main wheel. The digital word wheel of the magnetic direct reading instrument is simple in structure, low in processing requirement and convenient to manufacture and assemble and reduces cost. A direct reading instrument using the digital word wheel adopts a magnetic sensor to acquire a turning angle of the digital word wheel, only one magnetic sensor needs to be installed for one digital word wheel correspondingly, and therefore the digital word wheel of the magnetic direct reading instrument is convenient, low in processing requirement, not susceptible to outside interference and high in accuracy of obtained measuring electrical signals and improves accuracy of direct reading instrument electronic measurement reading.
Description
Technical field
The utility model relates to a kind of metering outfit, relates in particular to a kind of magnetic direct-reading instrument numeral character wheel.
Background technology
Some direct-reading measuring instruments (such as water meter) are to be rotated in proper order by a plurality of numeric word wheels to realize that counting shows.Digital character wheel on the tradition direct-reading instrument, needs and photoelectric tube mate use, need offer several circular arc through holes on the wheel face of numeral character wheel, 1 digital character wheel needs to install accordingly 5 pairs of photoelectric tubes at least, the numeral character wheel turns to different angles, can collect unlike signal by photoelectric tube, thereby the angular transition that digital character wheel turns over is become corresponding electric signal, not only can realize mechanical type metering direct-reading but also can realize that the electronic type metering shows, perhaps supplies subsequent process circuit or control circuit used.But this structure, need many to photoelectric tube and digital character wheel coupling, any deviation all may cause the inaccurate of collection signal, processing request is very high, and the coding that draws has the blind area easily, and adopt the signal collection of photoelectric tube source, affected by outside high light, above-mentioned factor finally all can cause the inaccurate of metering signal.
Summary of the invention
The utility model mainly solves original direct-reading instrument numeral character wheel to be needed many photoelectric tube to be matched, and processing request is very high, and the coding that draws has the blind area easily, is subjected to easily outside intense laser interfere, thereby causes the inaccurate technical matters of metering signal; A kind of magnetic direct-reading instrument numeral character wheel is provided, and simple in structure, processing request is not high, and making and easy to assembly reduces cost.It is installed in the direct-reading instrument, use with the Magnetic Sensor coupling, a digital character wheel only needs the corresponding Magnetic Sensor of installing, the angular transition that digital character wheel is turned over by Magnetic Sensor becomes corresponding electric signal, thereby so that use the direct-reading gage of this digital character wheel, easy to process, the metering electric signal accuracy of acquisition is high.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the utility model comprises that the side is marked with the main wheel of numeral, the right side wheel face of described main wheel is provided with ring-shaped magnet, a semi-ring of ring-shaped magnet is the N utmost point, another semi-ring is the S utmost point, and described main wheel center is provided with the axle mounting hole.Generally in direct-reading instrument, need to install four to five digital character wheels, respectively the numeral on rear, ten, hundred of representative meterings, kilobit and the myriabit.Be used for installation shaft in the axle mounting hole, digital character wheel is rotated centered by axle, also a plurality of digital character wheels can be connected in series by axle.Digital character wheel of the present utility model is installed in the direct-reading instrument, and the use of Magnetic Sensor coupling, and a digital character wheel only needs the corresponding Magnetic Sensor of installing, and Magnetic Sensor and ring-shaped magnet are installed face-to-face.The main wheel rotation drives the ring-shaped magnet rotation, gathers the magnetic declination that produces after the ring-shaped magnet rotation by Magnetic Sensor, thereby the angular transition that digital character wheel turns over is become corresponding electric signal.Use the direct-reading gage of the utility model numeral character wheel, it is convenient to realize, processing request is not high, is not subject to external interference, and the accuracy of electronic type metering reading is high.
As preferably, the right side wheel face of described main wheel is provided with annular cavity, and described ring-shaped magnet is inlaid in the annular cavity.Simple in structure, easy for installation, shared volume is little, guarantees ring-shaped magnet and main wheel synchronous rotary.
As preferably, the wheel face center that is positioned at described annular cavity inboard is provided with a boss that protrudes from wheel face, and described axle mounting hole is located at described boss center.Increase the axle be installed in the axle mounting hole and the contact area of main wheel, it is more firm to guarantee that axle is connected connection with main wheel.
As preferably, the left side of described main wheel is provided with radome, and radome covers the left side wheel face of main wheel.Radome plays the effect of armoured magnetic field, and its Magnetic Sensor with collection ring-shaped magnet rotational angle lays respectively at the both sides of ring-shaped magnet.Owing in direct-reading instrument, generally need to install a plurality of digital character wheels, general order by a digital character wheel, Magnetic Sensor, another digital character wheel, another Magnetic Sensor is installed, radome plays the effect of adjacent two ring-shaped magnets of isolation, prevent between adjacent two ring-shaped magnets interfere with each other and contiguous ring-shaped magnet to the interference that Magnetic Sensor produces, further guarantee the accuracy of electronic type metering reading.
As preferably, described radome is piece ring shielding plate, and the left side wheel face of described main wheel is provided with an annular groove, and described ring shielding plate is inlaid in the annular groove.The position of ring shielding plate is corresponding with the position of ring-shaped magnet, and the size of ring shielding plate is equal to or greater than the size of ring-shaped magnet, can shelter from ring-shaped magnet with the ring shielding plate and be as the criterion.Simple in structure, easy for installation, shared volume is little.
As preferably, described radome is the drum-shaped cover body that a bucket center, the end is provided with through hole, and the left side wheel face of the bung of drum-shaped cover body and described main wheel links to each other.The axle mounting hole role of the through hole at the bottom of the drum-shaped cover body bucket and main wheel is identical, makes the coaxial installation of drum-shaped cover body and main wheel energy.The drum-shaped cover body can cover whole digital character wheel, and shield effectiveness is better.
As preferably, the wheel face edge, left side of described main wheel is provided with the first driving cog, and the wheel face edge, right side of main wheel is provided with the second driving cog.Main wheel is realized the in proper order carry rotation of a plurality of digital character wheels by other transmission gear engagement in the first driving cog, the second driving cog and the direct-reading instrument by these engaging structures.
As preferably, described the second driving cog has a plurality of, and a plurality of the second driving cogs distribute along the main wheel even circumferential, and described the first driving cog has two, and the spacing of two the first driving cogs is identical with the spacing of two the second adjacent driving cogs.
As preferably, described the first driving cog and the second driving cog all are cylindrical shape, and cylindrical axis is vertical with described main wheel wheel face.
The beneficial effects of the utility model are: simple in structure, processing request is not high, and making and easy to assembly reduces cost.By ring-shaped magnet is installed, make direct-reading instrument realize the angle that is turned over by Magnetic Sensor collection numeral character wheel, a digital character wheel only needs the corresponding Magnetic Sensor of installing, it is convenient to realize, processing request is not high, be not subject to external interference, the metering electric signal accuracy of acquisition is high, improves the accuracy of electronic type metering reading.
Description of drawings
Fig. 1 is a kind of stereo decomposing structural representation of the present utility model.
Fig. 2 is a kind of main TV structure synoptic diagram of the present utility model.
Fig. 3 is a kind of backsight structural representation of the present utility model.
1. main wheels among the figure, 2. ring-shaped magnet, 3. axle mounting hole, 4. annular cavity, 5. boss, 6. ring shielding plate, 7. drum-shaped cover body, 8. the first driving cog, 9. the second driving cog.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the magnetic direct-reading instrument numeral character wheel of present embodiment, as shown in Figure 1 and Figure 2, comprise that the side is marked with the main wheel 1 of 0～90 numeral along even circumferential, the right side wheel face of main wheel 1 has an annular cavity 4, be embedded with a ring-shaped magnet 2 that size is adaptive with it in the annular cavity 4, a semi-ring of ring-shaped magnet 2 is the N utmost point, and another semi-ring is the S utmost point.The wheel face edge that is positioned at annular cavity 4 outsides has 9, two ten the second driving cogs of 20 the second driving cogs to distribute along main wheel 1 even circumferential, and the second driving cog 9 all is cylindrical shape, and cylindrical axis is vertical with main wheel 1 wheel face.There is a tubular boss 5 that protrudes from wheel face at the wheel face center that is positioned at annular cavity 4 inboards, and there is an axle mounting hole 3 at boss 5 centers, and the axle mounting hole runs through whole main wheel.As shown in Figure 3, the left side wheel face of main wheel 1 has an annular groove, be embedded with a ring shielding plate 6 that size is adaptive with it in the annular groove, the position of ring shielding plate is corresponding with the position of ring-shaped magnet 2, ring shielding plate 6 is slightly larger than ring-shaped magnet 2, ring shielding plate 6 blocks ring-shaped magnet 2, makes the magnetic line of force of ring-shaped magnet can not run to the left side of digital character wheel.There are two the first driving cogs 8 at the wheel face edge that is positioned at the annular groove outside, the shape of the first driving cog 8 and size are identical with the second driving cog 9, the spacing of two the first driving cogs 8 is identical with the spacing of two the second adjacent driving cogs 9, and two the first driving cogs 8 and two the second driving cogs 9 arrange back-to-back.
Embodiment 2: the magnetic direct-reading instrument numeral character wheel of present embodiment, the left side of main wheel 1 is connected with a radome, radome is the drum-shaped cover body 7 that a bucket center, the end has a through hole, axle the mounting hole 3 coaxial and in the same sizes of through hole and main wheel 1, the left side wheel face of the bung of drum-shaped cover body 7 and main wheel 1 links to each other, the drum-shaped cover body covers the left side wheel face of main wheel 1, and there are two the first driving cogs 8 at the wheel face edge in the drum-shaped cover body outside, and all the other structures are with embodiment 1.
The utility model is installed in the direct-reading instrument, consists of the direct-reading instrument code-disc, and the direct-reading instrument code-disc comprises circuit board, a plurality of digital character wheel and Magnetic Sensor, Magnetic Sensor of a corresponding installation of digital character wheel.Take four digital character wheels as example, even compartment of terrain is equipped with four installing plates on the circuit board, installing plate is vertical with circuit board, four Magnetic Sensors are installed in respectively the left side of four installing plates, four digital character wheels are connected in series by an axle, four digital character wheels are positioned at the left side of four installing plates correspondingly, and the ring-shaped magnet on the digital character wheel and the Magnetic Sensor on the installing plate are face-to-face.Each Magnetic Sensor gathers the anglec of rotation of the ring-shaped magnet relative with it, thereby the angular transition that digital character wheel is turned over becomes electric signal, realizes that the electronic type metering reading shows, perhaps supplies subsequent process circuit or control circuit used.The utility model is simple in structure, and processing request is not high, and making and easy to assembly reduces cost.Use direct-reading instrument of the present utility model, a digital character wheel only needs the corresponding Magnetic Sensor of installing, and it is convenient to realize, processing request is not high, is not subject to external interference, and the metering electric signal accuracy of acquisition is high, improves the accuracy of electronic type metering reading.
Claims (9)
1. magnetic direct-reading instrument numeral character wheel, comprise that the side is marked with the main wheel (1) of numeral, the right side wheel face that it is characterized in that described main wheel (1) is provided with ring-shaped magnet (2), a semi-ring of ring-shaped magnet (2) is the N utmost point, another semi-ring is the S utmost point, and described main wheel (1) center is provided with axle mounting hole (3).
2. magnetic direct-reading instrument numeral character wheel according to claim 1 is characterized in that the right side wheel face of described main wheel (1) is provided with annular cavity (4), and described ring-shaped magnet (2) is inlaid in the annular cavity (4).
3. magnetic direct-reading instrument according to claim 2 numeral character wheel, it is characterized in that being positioned at the inboard wheel face center of described annular cavity (4) and be provided with a boss (5) that protrudes from wheel face, described axle mounting hole (3) is located at described boss (5) center.
4. according to claim 1 and 2 or 3 described magnetic direct-reading instruments numeral character wheels, it is characterized in that the left side of described main wheel (1) is provided with radome, radome covers the left side wheel face of main wheel (1).
5. magnetic direct-reading instrument according to claim 4 numeral character wheel, it is characterized in that described radome is piece ring shielding plate (6), the left side wheel face of described main wheel (1) is provided with an annular groove, and described ring shielding plate (6) is inlaid in the annular groove.
6. magnetic direct-reading instrument numeral character wheel according to claim 4 is characterized in that described radome is the drum-shaped cover body (7) that a bucket center, the end is provided with through hole, and the bung of drum-shaped cover body (7) links to each other with the left side wheel face of described main wheel (1).
7. according to claim 1 and 2 or 3 described magnetic direct-reading instruments numeral character wheels, it is characterized in that the wheel face edge, left side of described main wheel (1) is provided with the first driving cog (8), the wheel face edge, right side of main wheel (1) is provided with the second driving cog (9).
8. magnetic direct-reading instrument according to claim 7 numeral character wheel, it is characterized in that described the second driving cog (9) has a plurality of, a plurality of the second driving cogs (9) distribute along main wheel (1) even circumferential, described the first driving cog (8) has two, and the spacing of two the first driving cogs (8) is identical with the spacing of two adjacent the second driving cogs (9).
9. magnetic direct-reading instrument numeral character wheel according to claim 7 is characterized in that described the first driving cog (8) and the second driving cog (9) all are cylindrical shape, and cylindrical axis is vertical with described main wheel (1) wheel face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457245 CN202793442U (en) | 2012-09-10 | 2012-09-10 | Digital word wheel of magnetic direct reading instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457245 CN202793442U (en) | 2012-09-10 | 2012-09-10 | Digital word wheel of magnetic direct reading instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793442U true CN202793442U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220457245 Withdrawn - After Issue CN202793442U (en) | 2012-09-10 | 2012-09-10 | Digital word wheel of magnetic direct reading instrument |
Country Status (1)
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| CN (1) | CN202793442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944257A (en) * | 2012-09-10 | 2013-02-27 | 浙江先芯科技有限公司 | Numerical word wheel of direct-reading gage |
-
2012
- 2012-09-10 CN CN 201220457245 patent/CN202793442U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944257A (en) * | 2012-09-10 | 2013-02-27 | 浙江先芯科技有限公司 | Numerical word wheel of direct-reading gage |
| CN102944257B (en) * | 2012-09-10 | 2015-05-13 | 浙江先芯科技有限公司 | Numerical word wheel of direct-reading gage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |