CN100371719C - Moving iron (electromagnetism system) type AC ammeter, voltmeter - Google Patents
Moving iron (electromagnetism system) type AC ammeter, voltmeter Download PDFInfo
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- CN100371719C CN100371719C CNB2004100935087A CN200410093508A CN100371719C CN 100371719 C CN100371719 C CN 100371719C CN B2004100935087 A CNB2004100935087 A CN B2004100935087A CN 200410093508 A CN200410093508 A CN 200410093508A CN 100371719 C CN100371719 C CN 100371719C
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- rotary shaft
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Abstract
The present invention discloses a moving iron (electromagnetic type) AC current/voltage meter which comprises a meter casing, a meter dial, a pointer and an electromagnetic machine core device, wherein the electromagnetic machine core device is coiled with a coil on a coil bracket, and one end of the coil bracket is fixedly provided with a rotary shaft bracket. The hollow inner wall of the coil bracket is provided with a stator bracket fixed with a stator, the rotary shaft bracket is provided with a rotor on a rotary shaft extending into the hollow part of the coil bracket; the stator and rotor are matched. The present invention omits a transformer and a circuit connected with the transformer, reducing integral volume of the meter and is improved into a mode of power input-induction coil-magnetic repulsion (generated between the stator and the rotor)-pointer deflection. The meter test is relevant to the coil and input current, and is irrelevant to other parts, and the phenomena of degaussing, demagnetization, etc. in the use process do not appear; the meter dial can be uniformly printed in a factory without hand adjustment; accordingly, the accuracy and the sensitivity of an electromagnetic meter are improved, and the product cost is reduced.
Description
Technical field
The present invention relates to the electrotechnical instrument and meter field, refer in particular to a kind of electromagnetic system moving-iron type alternating current, voltage table after the isostructural improvement of electromagnetism core device in the electromagnetic meter.
Background technology
The structure of present widely used moving-coil instrument and principle are early known by people, and have been widely used in the industry.The moving-coil instrument of instrument manufacturer production both at home and abroad, core texture-the magnetic core of its core section, all be that a permanent magnet (being generally rectangle or square magnet) is set in magnetic conductive cylinder, and additional again two garden posts lack the shape magnetic conductor, make it to constitute a cylindrical magnetic core structure, and keep an equidistant space with around the magnetic conductive cylinder internal diameter, make this space constitute space, a uniform magnetic field.Like this, when moving-coil has electric current to flow through, can in this space, moving-coil be rotated.When structure, material one timing, the strong and weak permanent magnet that just depends on fully in the magnetic field in this space.There are distinct issues in this core structure, is exactly that its field intensity can not manually be adjusted after in a single day the magnetic field intensity of permanent magnet was magnetized machine and magnetizes, and the time has been grown and had the pettiness leakage field, and magnetic property reduces.Particularly, crystal element in being applied in electrical instrument is aging or owing to reasons such as vibration can influence moving-coil locational change in the magnetic space, even change very micro-, that just can not guarantee high-precision consistance, thereby make the homogeneity in magnetic field be subjected to variation, affect the operating accuracy of instrument.In addition, after magnetic core is contained in and dispatches from the factory in the instrument, its performance, parameter are just fixing, yet, the user in use for some time since it will in time, the influence of environment, working temperature makes the magnet self-characteristic be subjected to change (demagnetization), the operating accuracy of table is obviously reduced, at this moment the magnetic field intensity that produces for magnetic core can't manually be adjusted again, and it is useless to put in order statistical tables and reports sometimes, and this brings unnecessary economic loss to the user.
Summary of the invention
The invention provides and produce magnetic field after a kind of movement adopts coil electricity, magnetic repulsion orders about the electromagnetic meter of needle deflection, has simplified the structure of original instrument greatly, and degree of accuracy, sensitivity are improved.
Technical scheme of the present invention is so: comprise watchcase, dial plate, pointer and the electromagnetism core device that drives pointer, described electromagnetism core device is to be shaped on coil in coil brace Shangrao, and an end of described coil brace is fixed with rotary shaft rack; The hollow wall of described coil brace is provided with the still support, is fixed with still on it, and the rotating shaft that described rotary shaft rack extend into the coil brace hollow space is provided with moving plate; Described still and moving plate phase configuration.
As preferably, described coil brace is round barrel shape, and the rotating shaft on the described rotary shaft rack is provided with coil brace is concentric; Described still support and still are fixed as one, and are fixed on the hollow wall of coil brace, and described moving plate is fixed in the rotating shaft by rivet.
As preferably, described still support is curved, and its diameter is greater than the internal diameter of the hollow space of coil brace, and described still is the fixed in shape that adapts with the still support on the still support; Also curved with the moving plate of described still phase configuration.
As preferably, the end of described still support is provided with the full scale tuning knob, and described full scale tuning knob is outwards turnover radially, and hook is put the outer face at coil brace.
As preferably, the end of described still support is provided with the full scale tuning knob, and described full scale tuning knob is outwards turnover radially, and hook is put the outer face at coil brace.
As preferably, the outer face of described coil brace is to establish two positioning convex column, correspondingly, is provided with two location shrinkage pools at the inner face of described rotary shaft rack.
As preferably, the outer face of described rotary shaft rack is provided with two fixed legs, is fixed with the pointer crane span structure on it, and described pointer crane span structure is provided with an end of pointer shaft.
As preferably, two terminations of described coil stretch out, and are arranged to external lead wire.
Advantage of the present invention is: after having changed cassette mechanism structure, transformer and the circuit part that is connected transformer have been removed, the instrument overall volume is reduced, measurement links provides damping-needle deflection by advance electricity-transformer-coil-inductance-magnetic field-magnetic repulsion (producing)-moving plate swing-hairspring between still and moving plate, is reduced to into electricity-telefault-magnetic repulsion (producing between still and moving plate)-needle deflection.Simplified pilot process.Original instrument is by the dial plate of how much modulating of magnetic, thereby make the scale of full scale on the dial plate unfixing, instrument inductance after the improvement stable (number of turns that calculates coil lays out next inductance), relevant with coil, input current, irrelevant with other parts, there are not the phenomenons such as demagnetization, demagnetization in the use, therefore, dial plate can be unified to print when dispatching from the factory, and without manual setting.Thereby improved degree of accuracy, the sensitivity of electromagnetic meter, reduced cost of products.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of structural representation of electromagnetism core device of the present invention;
Fig. 3 is a kind of structural representation of pointer support of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
The improved electromagnetism instrument of the present invention as depicted in figs. 1 and 2, wherein the electromagnetism core device is mixed watchcase 1, dial plate 2 and pointer 3 and just can be assembled into electromagnetic meter, and instrument structure is simplified greatly.The electromagnetism core device comprises columnar coil brace 12, coil brace 12 Shangrao are shaped on coil 13, the hollow space of coil brace 12 is provided with still 15, moving plate 21 and rotary shaft rack 17, rotating shaft on the rotary shaft rack 17 and coil brace 12 concentric settings, wherein still 15 is embedded in after still support 14 is fixed into one on the inwall of coil brace 12 hollow spaces again, and moving plate 21 is fixed in the rotating shaft by rivet 22.Still support 14 is curved, its diameter is greater than the internal diameter of the hollow space of coil brace 12, make still support 14 can be embedded on the inwall of coil brace 12 hollow spaces, described still 15 is the fixed in shape that adapts with still support 14 on still support 14, and is also curved with the moving plate 21 of still 15 phase configuration.The end of still support 14 is provided with full scale tuning knob 16, and radially outwards turnover, and hook is put the outer face at coil brace 12.The outer face of coil brace 12 is to establish two positioning convex column 19, correspondingly, is provided with two location shrinkage pools 23 at the inner face of described rotary shaft rack 17.The outer face of rotary shaft rack 17 is provided with two fixed legs 24, is fixed with pointer crane span structure 18 on it, and described pointer crane span structure 18 is provided with an end of pointer shaft.Two terminations of coil 13 stretch out, and are arranged to external lead wire 11.Electric current in the measured signal is through external lead wire 11 flowing through coil, on coil, produce magnetic field, the magnetic repulsion that moving plate and still produce in magnetic field orders about moving plate and drives the deflection of rotating shaft balance, and then the deflection of pointer balance, thereby shows measured scale according to pointer position on dial plate.
After having changed cassette mechanism structure, test process is for advancing electricity-telefault-magnetic repulsion (producing)-needle deflection between still and moving plate.Instrument inductance after the improvement stable (number of turns that calculates coil lays out next inductance), relevant with coil, input current, irrelevant with other parts, there is not the phenomenon such as demagnetization, demagnetization in the use, dial plate can be unified to print when dispatching from the factory, improve degree of accuracy, the sensitivity of electromagnetic meter, reduced cost of products.
At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, the invention is not restricted to the foregoing description, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (3)
1. an electromagnetic system moving-iron type alternating current, voltage table comprise watchcase, dial plate, pointer and the electromagnetism core device that drives pointer;
Described electromagnetism core device is to be wound with coil (13) on coil brace (12), one end of described coil brace (12) is fixed with rotary shaft rack (17), the hollow wall of described coil brace (12) is provided with still (15), the rotating shaft that described rotary shaft rack (17) extend into coil brace (12) hollow space is provided with moving plate (21), described still (15) and moving plate (21) phase configuration;
The outer face of described rotary shaft rack (17) is provided with two fixed legs (24), is fixed with pointer crane span structure (18) on it, and described pointer crane span structure (18) is provided with an end of pointer shaft;
It is characterized in that:
Described coil brace (12) is cylindric, rotating shaft on the described rotary shaft rack (17) and the concentric setting of coil brace (12);
Described still (15) is fixed on the still support (14), and one is fixed on the hollow wall of coil brace (12) again, and described moving plate (21) is fixed in the rotating shaft by rivet (22);
The end of described still support (14) is provided with full scale tuning knob (16), and described full scale tuning knob (16) is outwards turnover radially, and hook is put the outer face in coil brace (12).
2. a kind of electromagnetic system moving-iron type alternating current according to claim 1, voltage table, it is characterized in that: described still support (14) is curved, its diameter is greater than the internal diameter of the hollow space of coil brace (12), and described still (15) is the fixed in shape that adapts with still support (14) on still support (14); Also curved with the moving plate (21) of described still (15) phase configuration.
3. a kind of electromagnetic system moving-iron type alternating current according to claim 1, voltage table, it is characterized in that: the outer face of described coil brace (12) is to establish two positioning convex column (19), correspondingly, the inner face at described rotary shaft rack (17) is provided with two location shrinkage pools (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100935087A CN100371719C (en) | 2004-12-24 | 2004-12-24 | Moving iron (electromagnetism system) type AC ammeter, voltmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100935087A CN100371719C (en) | 2004-12-24 | 2004-12-24 | Moving iron (electromagnetism system) type AC ammeter, voltmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797009A CN1797009A (en) | 2006-07-05 |
| CN100371719C true CN100371719C (en) | 2008-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100935087A Expired - Fee Related CN100371719C (en) | 2004-12-24 | 2004-12-24 | Moving iron (electromagnetism system) type AC ammeter, voltmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371719C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125852A (en) * | 1981-01-30 | 1982-08-05 | Jeco Co Ltd | Ammeter |
| US4906919A (en) * | 1988-06-30 | 1990-03-06 | Nippon Seiki Co., Ltd. | Moving magnet type meter |
| CN2056255U (en) * | 1989-08-26 | 1990-04-18 | 温州市松台电器配件厂 | Electromagnetic instrument |
| CN2101241U (en) * | 1991-06-07 | 1992-04-08 | 林玉平 | Marine meter-covering gauge outfit |
| CN2298522Y (en) * | 1997-03-07 | 1998-11-25 | 瑞升电机工业(昆山)有限公司 | Electricity meter |
| CN2555507Y (en) * | 2002-06-24 | 2003-06-11 | 李荣平 | Measuring mechanism of electrical meter |
| CN2754104Y (en) * | 2004-12-24 | 2006-01-25 | 秦永仁 | Electromagnetic moving iron alternating current and voltage meter |
-
2004
- 2004-12-24 CN CNB2004100935087A patent/CN100371719C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125852A (en) * | 1981-01-30 | 1982-08-05 | Jeco Co Ltd | Ammeter |
| US4906919A (en) * | 1988-06-30 | 1990-03-06 | Nippon Seiki Co., Ltd. | Moving magnet type meter |
| CN2056255U (en) * | 1989-08-26 | 1990-04-18 | 温州市松台电器配件厂 | Electromagnetic instrument |
| CN2101241U (en) * | 1991-06-07 | 1992-04-08 | 林玉平 | Marine meter-covering gauge outfit |
| CN2298522Y (en) * | 1997-03-07 | 1998-11-25 | 瑞升电机工业(昆山)有限公司 | Electricity meter |
| CN2555507Y (en) * | 2002-06-24 | 2003-06-11 | 李荣平 | Measuring mechanism of electrical meter |
| CN2754104Y (en) * | 2004-12-24 | 2006-01-25 | 秦永仁 | Electromagnetic moving iron alternating current and voltage meter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1797009A (en) | 2006-07-05 |
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