CN102944257A - Numerical word wheel of direct-reading gage - Google Patents
Numerical word wheel of direct-reading gage Download PDFInfo
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- CN102944257A CN102944257A CN2012103320036A CN201210332003A CN102944257A CN 102944257 A CN102944257 A CN 102944257A CN 2012103320036 A CN2012103320036 A CN 2012103320036A CN 201210332003 A CN201210332003 A CN 201210332003A CN 102944257 A CN102944257 A CN 102944257A
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Abstract
The invention relates to a numerical word wheel of a direct-reading gage. The numerical word wheel comprises a main wheel with numerical words marked on the side surface, wherein an annular magnet is arranged on the right side wheel surface of the main wheel, one half circle of the annular magnet is an N-pole, the other half circle of the annular magnet is an S-pole, a shaft installation hole is arranged in the center of the main wheel, a shielding cover is arranged at the left side of the main wheel, and the shielding cover covers the left side wheel surface of the main wheel. A first drive gear is arranged on the edge of the left side wheel surface of the main wheel, and a second drive gear is arranged on the edge of the right side wheel surface of the main wheel. The numerical word wheel of the direct-reading gage is simple in structure, not high in processing requirements, lowered in cost, and convenient to manufacture and assemble. When the direct-reading gage provided by the invention is used, a magnetic sensor is adopted to acquire the rotating angle of the numerical word wheel, only one magnetic sensor is installed corresponding to one numerical word wheel, so that convenience is brought, the processing requirement is not high, the external interference is less, the precision of a metered electric signal is high, and the electronic type reading accuracy of the direct-reading gage is improved.
Description
Technical field
The present invention relates to a kind of metering outfit, relate in particular to a kind of digital character wheel of direct-reading gage.
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 present invention 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 digital character wheel of direct-reading gage 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 invention is mainly solved by following technical proposals: the present invention includes the main wheel that the side is marked with 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 invention 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 present invention's 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 invention has the beneficial effects as follows: 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 invention.
Fig. 2 is a kind of main TV structure synoptic diagram of the present invention.
Fig. 3 is a kind of backsight structural representation of the present invention.
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, technical scheme of the present invention is described in further detail.
Embodiment 1: the digital character wheel of a kind of direct-reading gage 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 digital character wheel of a kind of direct-reading gage 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 present invention 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 present invention 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 invention, 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. the digital character wheel of a direct-reading gage, 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. the digital character wheel of a kind of direct-reading gage 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. the digital character wheel of a kind of direct-reading gage according to claim 2, 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 the digital character wheel of 3 described a kind of direct-reading gages, 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. the digital character wheel of a kind of direct-reading gage according to claim 4, 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. the digital character wheel of a kind of direct-reading gage 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 the digital character wheel of 3 described a kind of direct-reading gages, 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. the digital character wheel of a kind of direct-reading gage according to claim 7, 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. the digital character wheel of a kind of direct-reading gage 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 |
|---|---|---|---|
| CN201210332003.6A CN102944257B (en) | 2012-09-10 | 2012-09-10 | Numerical word wheel of direct-reading gage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210332003.6A CN102944257B (en) | 2012-09-10 | 2012-09-10 | Numerical word wheel of direct-reading gage |
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| CN102944257A true CN102944257A (en) | 2013-02-27 |
| CN102944257B CN102944257B (en) | 2015-05-13 |
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Cited By (5)
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| CN104864929A (en) * | 2015-06-29 | 2015-08-26 | 成都千嘉科技有限公司 | Magnetic induction shaftless character wheel for character wheel counter |
| CN104881702A (en) * | 2015-06-29 | 2015-09-02 | 成都千嘉科技有限公司 | Magnetic induction print wheel used for print wheel counter |
| CN104880231A (en) * | 2015-06-29 | 2015-09-02 | 成都千嘉科技有限公司 | Magnetic induction character wheel direct reading device |
| CN104897228A (en) * | 2015-06-29 | 2015-09-09 | 成都千嘉科技有限公司 | Direct-reading counter for magnetic-induction shaft-breaking character wheel |
| CN111175973A (en) * | 2019-12-31 | 2020-05-19 | Oppo广东移动通信有限公司 | Head band adjusting method and adjusting device, computer storage medium and head-mounted equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104864929A (en) * | 2015-06-29 | 2015-08-26 | 成都千嘉科技有限公司 | Magnetic induction shaftless character wheel for character wheel counter |
| CN104881702A (en) * | 2015-06-29 | 2015-09-02 | 成都千嘉科技有限公司 | Magnetic induction print wheel used for print wheel counter |
| CN104880231A (en) * | 2015-06-29 | 2015-09-02 | 成都千嘉科技有限公司 | Magnetic induction character wheel direct reading device |
| CN104897228A (en) * | 2015-06-29 | 2015-09-09 | 成都千嘉科技有限公司 | Direct-reading counter for magnetic-induction shaft-breaking character wheel |
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| CN111175973A (en) * | 2019-12-31 | 2020-05-19 | Oppo广东移动通信有限公司 | Head band adjusting method and adjusting device, computer storage medium and head-mounted equipment |
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| CN102944257B (en) | 2015-05-13 |
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