CN2823988Y - Reading mechanism for meter - Google Patents
Reading mechanism for meter Download PDFInfo
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- CN2823988Y CN2823988Y CN 200520102096 CN200520102096U CN2823988Y CN 2823988 Y CN2823988 Y CN 2823988Y CN 200520102096 CN200520102096 CN 200520102096 CN 200520102096 U CN200520102096 U CN 200520102096U CN 2823988 Y CN2823988 Y CN 2823988Y
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- counting
- gear
- carry
- reading
- wheel
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Abstract
The utility model discloses a reading mechanism for a measuring meter, which comprises counting gears fixedly arranged on a counting wheel shaft of each counting bit and carry gears between the counting gears, wherein both surfaces of the counting gears are respectively provided with twenty counting teeth and two teasing teeth, and the size of each teasing tooth is the same with that of each counting tooth, and the positions of the teasing tooth and the counting tooth are consistent with the position of any two counting teeth on the same counting gear. A carry gear is matched with the counting gear of low order low-order digit and is engaged with the counting wheel of the counting gear of high-order digit. The utility model is characterized in that the counting gear of each counting bit is arranged on the same plane; the counting gears of the contiguous counting bits are reversed mutually by 180 DEG; a toggle mechanism is arranged between the teasing tooth and the carry gear; the plane of the counting gear is provided with a coding disc; both axial side end surfaces of the counting gear are respectively provided with a photoelectric device; the counting gear of low order bit is provided with a critical carry striking gear. The utility model has the advantages of simple structure, high integrated level, no critical carry status and high identifying accuracy rate.
Description
Technical field
The utility model relates to a kind of measuring instrument, especially relates to a kind of reading mechanism of measuring instrument.
Background technology
Traditional mechanical counter is to be made of 4～8 digital wheels, the centre is connected with rounding wheel, constitute one 4～8 decimal counter, usually the reading mechanism of measuring instrument mainly contains pulsed and video formula reading mechanism, the existing inherent shortcoming of these traditional reading mechanisms is the interference that is subject to environmental factors such as thunder and lightning, power-supply fluctuation, influences the accuracy of reading.No. 00261707.2 Chinese utility model that Dec 26 calendar year 2001, bulletin was authorized discloses a kind of non-transformer remote transmitting gas meter, mainly be on the basis of former gas meter, flow meter, the segment count of copy reading will be needed, with electric reading type mechanical counter carry counting system mode at intermittence carry counting system, convert the mechanical location of counting to electric signal with photoelectric sensor and code-wheel and carry out teletransmission, realize the purpose of long-range copy reading counting.The advantage of this gas meter, flow meter is that the number of coding and pointer indication is synchronous on mechanical location, has the coded signal memory function, need not power supply and keeps counting, adopts the scale-of-two loop coding to combine with the batch (-type) carry counting system, and conversion of signals reliably, accurately.The part but this gas meter, flow meter also comes with some shortcomings, it mainly is its structure more complicated, the occupied space of counter wheel and thumb wheel is bigger, the quantity of code-wheel is too much, not only influence the cost of product, can influence the integrated level of product simultaneously, in addition, the reading mechanism of this structure also exists critical carry status between 0～9, can produce bigger middle carry identification error, that is to say, when the counting gear of low level on 9 during less than 0, high-order counting gear is carry not as yet, will produce the mistake in the identification during this moment reading metering.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in structure at above-mentioned prior art present situation, and the integrated level height does not have critical carry status, the reading mechanism that is suitable for various measuring instruments that recognition accuracy is high.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of reading mechanism of measuring instrument, it comprises the counting gear on the counting wheel shaft that is fixedly installed on the individual count position and is arranged on carry gear between the counting gear of adjacent meter digital, evenly be provided with 20 counting teeth on the circumference of the one side of described counting gear, the circumference of the another side of described counting gear is provided with two moving teeth, the equal and opposite in direction of the size of described moving tooth and described counting tooth is also consistent with the positions of any two counting teeth on the same counting gear, described carry gear cooperate with the moving tooth of the counting gear of lower-order digit and with the counting tooth engagement of the counting gear of seniority, the counting gear of individual count position is arranged on the same plane, the counting gear of adjacent meter digital reverses 180 ° mutually, be provided with toggle mechanism between described moving tooth and the described carry gear, the plane of described counting gear is provided with code-wheel, two axial side end faces of described counting gear are provided with electrooptical device, and the counting gear of lowest order is provided with critical carry striking gear.Described electrooptical device can substitute with other electromagnetic signal recognition device.
Described toggle mechanism is provided with equally distributed thick carry tooth and thin carry tooth constitutes at interval by the notch gear that is arranged on two axial perforations between the described moving tooth with at described carry gear.
Described code-wheel is provided with four code-wheel reading holes, the coded system in described code-wheel reading hole is a Gray code, described electrooptical device is the four pairs of reading light sources and the photoelectric receiving tube that is arranged on the relevant position, signal was 0 when the light of described reading light source saw through described code-wheel, and signal was 1 when the light of described reading light source was stopped by described code-wheel.
Described critical carry striking gear comprises a critical carry thumb wheel and a slide block, described slide block is fixedly installed on the described counting wheel shaft, described critical carry thumb wheel and a driving mechanism are fixed, described slide block is provided with auxiliary moving tooth, described slide block is arranged to when described moving tooth contacts with described carry gear, the critical carry moving tooth engagement on described auxiliary moving tooth and the described critical carry thumb wheel.
Described driving mechanism drives described critical carry thumb wheel and rotated a week at least before each reading.
Described driving mechanism can be a micromachine, also can be magnetic driving mechanism or other driving mechanism.
Described carry gear is arranged at intervals with four thick carry teeth and four thin carry teeth.
Described reading light source can be photodiode, also can be other light source.
The axle center of the counting wheel shaft of described individual count position is positioned on the same circumference, the axle center of described each carry gear is positioned on another circumference of concentric, the central angle in the axle center of adjacent counting wheel shaft is 36 °, and the axle center of described carry gear is positioned on the angular bisector of central angle in adjacent counting wheel shaft axle center.
Compared with prior art, advantage of the present utility model is that the counting gear of individual count position is arranged on the same plane, the counting gear of adjacent meter digital reverses 180 ° mutually, be provided with toggle mechanism between moving tooth and the carry gear, code-wheel is arranged on the plane of counting gear, two axial side end faces of counting gear are provided with electrooptical device, this structure has significantly reduced counter wheel and the occupied space of carry gear, not only simple in structure, the cost of product is also lower, improve simultaneously the integrated level and the reliability of product effectively, reduced the bulk of entire product; Critical carry striking gear is set on the counting gear of lowest order, slide block is arranged to when moving tooth contacts with the carry gear, critical carry moving tooth engagement on auxiliary moving tooth and the critical carry thumb wheel, before each reading, driving mechanism drives critical carry thumb wheel and rotates a week at least, like this can be when reading mechanism be in critical carry status between 0～9, initiatively driving counting gear by critical carry striking gear rotates, thereby make on the carry gear driven one counting gear carry, carry identification error in the middle of eliminating effectively; And when reading mechanism is positioned at other position, can the not exert an influence effect of reading of critical carry striking gear.The utility model can be suitable for the reading mechanism of various measuring instruments such as water meter, gas meter, flow meter.
Description of drawings
Fig. 1 is a sectional perspective structural representation of the present utility model;
Fig. 2 is the positional structure synoptic diagram of the utility model code-wheel and electrooptical device;
Fig. 3 is the perspective view of the utility model counting gear and carry gear matched;
Fig. 4 is the structural representation of the reading mechanism of the utility model circle distribution;
Fig. 5 is a kind of instrument dial plate synoptic diagram of the reading mechanism of use circle distribution;
Fig. 6 is the perspective view of a kind of instrument of the reading mechanism of use circle distribution.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment: as shown in the figure, a kind of reading mechanism of measuring instrument, it comprises the counting gear 2 on the counting wheel shaft 1 that is fixedly installed on the individual count position and is arranged on carry gear 3 between the counting gear 2 of adjacent meter digital, the axle center of the counting wheel shaft 1 of individual count position is positioned on the same circumference, the axle center of each carry gear 3 also is positioned on another circumference of concentric, the central angle in the axle center of adjacent counting wheel shaft 1 is 36 °, the axle center of carry gear 3 is positioned on the angular bisector of central angle in adjacent counting wheel shaft 1 axle center, evenly be provided with 20 counting teeth 21 on the circumference of the one side of counting gear 2, the circumference of the another side of counting gear 2 is provided with two moving teeth 22, the size of moving tooth 22 with counting tooth 21 equal and opposite in direction and with same counting gear 2 on any two the counting teeth 21 positions consistent, carry gear 3 cooperate with the moving tooth 22 of the counting gear 2 of lower-order digit and with counting tooth 21 engagements of the counting gear 2 of seniority, the counting gear 2 of individual count position is arranged on the same plane, the counting gear 2 of adjacent meter digital reverses 180 ° mutually, be provided with toggle mechanism 4 between moving tooth 22 and the carry gear 3, toggle mechanism 4 by the notch gear 23 that is arranged on two axial perforations between the moving tooth 22 with at carry gear 3 intervals equally distributed four thick carry teeth 31 is set and four thin carry teeth 32 constitute, the plane of counting gear 2 is provided with code-wheel 5, code-wheel 5 is provided with four code-wheel reading holes 51, the coded system in code-wheel reading hole 51 is a Gray code, two axial relevant positions, side end face of counting gear 2 are provided with four electrooptical devices 6, electrooptical device 6 can be photodiode (not shown) and photoelectric receiving tube (not shown), signal was 0 when the light of photodiode received for photodiode through code-wheel 5, the light of the photodiode dish that is encoded 5 stops that signal is 1 in the time of can not receiving for photoelectric receiving tube, and the counting gear 2 of lowest order is provided with critical carry striking gear 7.
Critical carry striking gear 7 comprises a critical carry thumb wheel 71 and a slide block 72, slide block 72 is fixedly installed on the counting wheel shaft 1, critical carry thumb wheel 71 and a micromachine 8 are fixing, slide block 72 is provided with auxiliary moving tooth 73, slide block 72 is arranged to when moving tooth 22 contacts with carry gear 3, critical carry moving tooth 74 engagements on auxiliary moving tooth 73 and the critical carry thumb wheel 71, micromachine 8 drives critical carry thumb wheel 71 and rotating a week at least before each reading.
In the foregoing description, photodiode can substitute with other reading light source, and simultaneously the electrooptical device 6 that constitutes of reading light source and photoelectric receiving tube also can substitute with other electromagnetic signal recognition device, and micromachine 8 also can be used such as other driving mechanism such as magnetic drive mechanism and substitute.
Claims (9)
1, a kind of reading mechanism of measuring instrument, it comprises the counting gear on the counting wheel shaft that is fixedly installed on the individual count position and is arranged on carry gear between the counting gear of adjacent meter digital, evenly be provided with 20 counting teeth on the circumference of the one side of described counting gear, the circumference of the another side of described counting gear is provided with two moving teeth, the equal and opposite in direction of the size of described moving tooth and described counting tooth is also consistent with the positions of any two counting teeth on the same counting gear, described carry gear cooperate with the moving tooth of the counting gear of lower-order digit and with the counting tooth engagement of the counting gear of seniority, the counting gear that it is characterized in that the individual count position is arranged on the same plane, the counting gear of adjacent meter digital reverses 180 ° mutually, be provided with toggle mechanism between described moving tooth and the described carry gear, the plane of described counting gear is provided with code-wheel, the axial side end face of described counting gear is provided with electrooptical device, and the counting gear of lowest order is provided with critical carry striking gear.
2, the reading mechanism of a kind of measuring instrument as claimed in claim 1 is characterized in that described toggle mechanism is provided with equally distributed thick carry tooth and thin carry tooth constitutes at interval by the notch gear that is arranged on two axial perforations between the described moving tooth with at described carry gear.
3, the reading mechanism of a kind of measuring instrument as claimed in claim 1, it is characterized in that described code-wheel is provided with four code-wheel reading holes, the coded system in described code-wheel reading hole is a Gray code, described electrooptical device is the four pairs of reading light sources and the photoelectric receiving tube that is arranged on the relevant position, signal was 0 when the light of described reading light source saw through described code-wheel, and signal was 1 when the light of described reading light source was stopped by described code-wheel.
4, the reading mechanism of a kind of measuring instrument as claimed in claim 1, it is characterized in that described critical carry striking gear comprises a critical carry thumb wheel and a slide block, described slide block is fixedly installed on the described counting wheel shaft, described critical carry thumb wheel and a driving mechanism are fixed, described slide block is provided with auxiliary moving tooth, described slide block is arranged to when described moving tooth contacts with described carry gear, the critical carry moving tooth engagement on described auxiliary moving tooth and the described critical carry thumb wheel.
5, the reading mechanism of a kind of measuring instrument as claimed in claim 4 is characterized in that described driving mechanism drives described critical carry thumb wheel and rotated a week at least before each reading.
6, the reading mechanism of a kind of measuring instrument as claimed in claim 4 is characterized in that described driving mechanism is a micromachine.
7, the reading mechanism of a kind of measuring instrument as claimed in claim 2 is characterized in that described carry gear is arranged at intervals with four thick carry teeth and four thin carry teeth.
8, the reading mechanism of a kind of measuring instrument as claimed in claim 3 is characterized in that described reading light source is a photodiode.
9, the reading mechanism of a kind of measuring instrument as claimed in claim 1, the axle center that it is characterized in that the counting wheel shaft of described individual count position is positioned on the same circumference, the axle center of described each carry gear is positioned on another circumference of concentric, the central angle in the axle center of adjacent counting wheel shaft is 36 °, and the axle center of described carry gear is positioned on the angular bisector of central angle in adjacent counting wheel shaft axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102096 CN2823988Y (en) | 2005-05-10 | 2005-05-10 | Reading mechanism for meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102096 CN2823988Y (en) | 2005-05-10 | 2005-05-10 | Reading mechanism for meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2823988Y true CN2823988Y (en) | 2006-10-04 |
Family
ID=37033103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520102096 Expired - Fee Related CN2823988Y (en) | 2005-05-10 | 2005-05-10 | Reading mechanism for meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2823988Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380100C (en) * | 2005-05-10 | 2008-04-09 | 宁波市科技园区长源电子有限公司 | Reading mechanism of metering device |
-
2005
- 2005-05-10 CN CN 200520102096 patent/CN2823988Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380100C (en) * | 2005-05-10 | 2008-04-09 | 宁波市科技园区长源电子有限公司 | Reading mechanism of metering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |