CN114360963A - Electromagnetic relay capable of metering and electronic electric energy meter thereof - Google Patents
Electromagnetic relay capable of metering and electronic electric energy meter thereof Download PDFInfo
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- CN114360963A CN114360963A CN202111659685.7A CN202111659685A CN114360963A CN 114360963 A CN114360963 A CN 114360963A CN 202111659685 A CN202111659685 A CN 202111659685A CN 114360963 A CN114360963 A CN 114360963A
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- 238000005070 sampling Methods 0.000 claims abstract description 144
- 238000003466 welding Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical group [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 229910001006 Constantan Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 10
- NMWSKOLWZZWHPL-UHFFFAOYSA-N 3-chlorobiphenyl Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1 NMWSKOLWZZWHPL-UHFFFAOYSA-N 0.000 description 9
- 101001082832 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Pyruvate carboxylase 2 Proteins 0.000 description 9
- 230000007547 defect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000896 Manganin Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/065—Details of electronic electricity meters related to mechanical aspects
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a measurable electromagnetic relay and an electronic electric energy meter thereof, wherein the measurable electromagnetic relay comprises a shell, a PCB (printed Circuit Board) and two lead-out sheets which extend from the inside of the shell to the outside of one side edge of the shell and are connected with a contact assembly in the shell; one of the two leading-out pieces comprises a plate-type sampling resistance piece made of a high-resistivity material and conducting pieces connected to two ends of the sampling resistance piece, and two sampling pins extending in the same direction are arranged on the sampling resistance piece; the PCB is respectively connected with two sampling pins of the sampling resistance card in an inserting and welding way; in the sampling resistance card, a through hole is arranged along the thickness direction of the plate body. The invention utilizes the induced current generated by the first closed ring formed by the through hole in the external alternating magnetic field to offset the induced current generated by the second closed ring surrounded by the sampling resistance sheet, the sampling pin and the PCB in the external alternating magnetic field, thereby improving the measuring anti-interference capability of the relay in the alternating magnetic field.
Description
Technical Field
The invention relates to the technical field of electronic instruments, in particular to a measurable electromagnetic relay and an electronic electric energy meter thereof.
Background
The electronic electric energy meter is an electronic instrument, which samples the voltage and current supplied by the user in real time, adopts a special electric energy meter integrated circuit to process and multiply the sampled voltage and current signals to convert the signals into pulse output in direct proportion to the electric energy, and then displays the pulse output by a meter or a digital display. The electronic electric energy meter usually adopts a relay to control a load circuit, the relay is used as an electronic control device, the electronic energy meter is provided with a control system (also called an input loop) and a controlled system (also called an output loop), the electronic energy meter is usually applied to an automatic control circuit, the electronic energy meter is actually an 'automatic switch' for controlling larger current by using smaller current, and the electronic energy meter plays the roles of automatic regulation, safety protection, conversion circuit and the like in the circuit. A measurable electromagnetic relay for electronic type electric energy meter of prior art includes the casing usually, contact subassembly in the casing and two lead out the piece that is connected with the contact subassembly in the casing, one of them of two lead out the piece is equipped with the manganese copper sheet as metering device, be equipped with the sampling foot on the manganese copper sheet and be connected with the PCB board through the signal line, this kind of relay is on the one hand owing to adopt the signal line to connect, need have welding process, cause the process complicated, the cost of manufacture is high, degree of automation low grade drawback, on the other hand, external magnetic field disturbs and can cause the measurement precision to reduce.
In addition, the measurable electromagnetic relay for the electronic electric energy meter in the prior art adopts two-way measurement, the two-way measurement relay is provided with four lead-out pieces, every two lead-out pieces form one way and are respectively connected with one corresponding way of contact component, in the two-way lead-out pieces, one lead-out piece of the two lead-out pieces in each way is provided with a measuring device, one lead-out piece in one way is provided with a manganese copper sheet as a sampling circuit for measurement, one lead-out piece in the other way is provided with a current transformer as a sampling circuit for measurement, and the two-way measurement relay in the measurement mode in the prior art mainly has the following disadvantages: firstly, because a current transformer is adopted for metering one path, the cost of the relay is high, and the competitiveness of a product is influenced; secondly, the manganese copper sheet and the current transformer are connected by signal wires, and the signal wires are also connected by coil leading-out, so that the defects of complex production process, high possibility of wrong welding of the signal wires, high labor cost, low automation degree and the like are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a measurable electromagnetic relay and an electronic electric energy meter thereof, and through structural improvement, on one hand, the anti-interference capacity of the relay in the measurement of an alternating magnetic field can be improved; on the other hand, many defects caused by signal line connection can be avoided, and the device has the characteristics of low manufacturing cost, convenience in installation and high automation degree.
The technical scheme adopted by the invention for solving the technical problems is as follows: a measurable electromagnetic relay comprises a shell, a PCB and two lead-out sheets which extend from the inside of the shell to the outside of one side edge of the shell and are connected with a contact assembly in the shell; one of the two leading-out pieces comprises a plate-type sampling resistance piece made of a high-resistivity material and conducting pieces connected to two ends of the sampling resistance piece, and two sampling pins extending in the same direction are arranged at two ends of the sampling resistance piece and used for realizing the inflow and outflow of current; the PCB is respectively connected with the sampling pins of the two sampling resistance cards in an inserting and welding way; in the sampling resistance card, a through hole is formed in the thickness direction of the plate body, so that induced current generated in an external alternating magnetic field by a first closed ring formed by the through hole is utilized to counteract induced current generated in the external alternating magnetic field by a second closed ring surrounded by the sampling resistance card, a sampling pin and a PCB, and the capacity of measuring the interference resistance of the relay in the alternating magnetic field is improved.
The area of the first closed ring is set to be the same as that of the second closed ring, so that the induced current generated by the first closed ring formed by the through hole in the external alternating magnetic field is utilized to completely offset the induced current generated by the second closed ring surrounded by the sampling resistance sheet, the sampling pin and the PCB in the external alternating magnetic field.
The number of the leading-out pieces which extend from the inside of the shell to the outside of one side edge of the shell and are connected with the contact assemblies in the shell is two, and one path of the contact assemblies in the shell is one; one of the two lead-out sheets comprises the sampling resistance sheet.
The number of the lead-out sheets which extend out of one side edge of the shell from the inside of the shell and are connected with the contact assemblies in the shell is four, and the number of the contact assemblies in the shell is two; in the four lead-out pieces, every two lead-out pieces are respectively connected with one path of corresponding contact assembly; in each lead-out piece, one lead-out piece comprises the sampling resistance piece.
And the PCB is connected with the sampling pins of the sampling resistance card in an inserting and welding way on the same plane.
The shell is also provided with a coil leading-out pin extending out of the shell, and the coil leading-out pin and the sampling pin of the sampling resistance card are respectively connected with the PCB in an inserting and welding mode on the same plane.
And two sampling pins in the same sampling resistance card are respectively connected with the top surfaces in the ends of the two ends of the corresponding sampling resistance card.
And two sampling pins in the same sampling resistance card are respectively connected with the top surfaces of the conducting strips outside the ends of the two ends of the corresponding sampling resistance card.
And each sampling pin in the sampling resistance card is respectively set to be in a pin type structure.
In the sampling pin, a first boss is further arranged at the connection part of the sampling pin and the corresponding sampling resistance card, the cross section of the first boss is larger than that of the sampling pin, and the PCB is lapped on the top surface of the first boss.
In the sampling pin, a layer of soldering tin is coated outside a part corresponding to the upper surface of the first boss.
The through hole of the sampling resistance card is positioned on a vertical line of the midpoint of the connecting line of the two sampling pins.
The coil leading-out pins are distributed on the top surface of the shell close to the other side edge of the shell opposite to one side edge of the shell, second bosses are respectively arranged on two sides of the top surface of the shell close to the other side edge of the shell, and the height positions of the top surfaces of the second bosses are flush with the height positions of the top surfaces of the first bosses; the PCB board is lapped on the top surface of the first boss and the top surface of the second boss.
The four lead-out pieces are sequentially arranged along one side edge of the shell, wherein the two lead-out pieces in the middle are respectively connected with one path of contact assembly in the shell through one side edge of the shell, one lead-out piece in the two lead-out pieces on two sides is wound to be close to the other lead-out piece from the bottom of the shell, and the other side edge of one side edge of the shell is connected with the other path of contact assembly in the shell.
The sampling resistance card is a manganese copper sheet or a constantan sheet.
An electronic electric energy meter comprising a metered electromagnetic relay as described above.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the through hole is formed in the sampling resistance sheet along the thickness direction of the sheet body, so that induced current generated in an external alternating magnetic field by a first closed ring formed by the through hole is utilized to counteract induced current generated in the external alternating magnetic field by a second closed ring surrounded by the sampling resistance sheet, the sampling pin and the PCB, thereby improving the measuring anti-interference degree capability of the relay in the alternating magnetic field. The structure of the invention utilizes the induced current generated by the through hole of the sampling resistance card in the external alternating magnetic field to offset the induced current generated by a second closed ring surrounded by the sampling resistance card, the sampling pin and the PCB in the external alternating magnetic field, thereby reducing the influence of the alternating electromagnetic field on the measurement precision of the manganin interference and improving the interference resistance of the relay in the measurement of the alternating magnetic field.
2. In the invention, as the four lead-out pieces are adopted, every two lead-out pieces are respectively connected with one path of corresponding contact assembly; in each lead-out piece, each lead-out piece comprises a plate-type sampling resistance piece made of high-resistivity materials and conducting pieces connected to two ends of the sampling resistance piece. According to the structure, the two lead-out sheets for realizing sampling are sampling resistance sheets respectively, and sampling pins of the two sampling resistance sheets are connected with the PCB in an inserting and welding mode respectively. The structure of the invention utilizes two sampling resistance cards as a sampling circuit for metering, and the two sampling resistance cards are provided with sampling pins in the same direction and are directly connected and welded with a PCB board for fixing, thereby avoiding a plurality of defects generated by the connection of signal lines in the prior art, having the characteristics of low manufacturing cost, convenient installation and high automation degree,
the invention is further explained in detail with the accompanying drawings and the embodiments; however, the electromagnetic relay and the electronic electric energy meter of the present invention are not limited to the embodiments.
Drawings
Fig. 1 is a schematic perspective view of a scalable electromagnetic relay according to a first embodiment of the present invention;
fig. 2 is a front view of a metered electromagnetic relay in accordance with a first embodiment of the present invention;
fig. 3 is a top view of a scalable electromagnetic relay according to a first embodiment of the invention;
fig. 4 is a left side view of a metered electromagnetic relay in accordance with a first embodiment of the present invention;
fig. 5 is a right side view of a metered electromagnetic relay in accordance with a first embodiment of the present invention;
FIG. 6 is an enlarged schematic view of section A of FIG. 2;
fig. 7 is a schematic perspective view of a measurable electromagnetic relay (without PCB) according to a first embodiment of the present invention;
FIG. 8 is a front view of a metered electromagnetic relay (without a PCB) according to a first embodiment of the present invention;
FIG. 9 is a top view of a scalable electromagnetic relay (without a PCB) according to a first embodiment of the present invention;
fig. 10 is a left side view of a metered electromagnetic relay (without a PCB board) according to a first embodiment of the present invention;
FIG. 11 is a right side view of a metered electromagnetic relay (without a PCB) according to a first embodiment of the present invention;
fig. 12 is a schematic perspective view of one of the lead-out pieces of the electromagnetic relay according to the first embodiment of the present invention;
fig. 13 is a front view of one of the tabs of the metered electromagnetic relay of the first embodiment of the present invention;
fig. 14 is a schematic perspective view of a measurable electromagnetic relay (without PCB) according to a second embodiment of the present invention;
fig. 15 is a front view of a metered electromagnetic relay (without PCB board) according to a second embodiment of the present invention;
fig. 16 is a top view of a scalable electromagnetic relay (without PCB board) according to a first embodiment of the invention;
fig. 17 is a rear view of a metered electromagnetic relay (without a PCB board) according to a first embodiment of the present invention;
fig. 18 is a schematic perspective view of a measurable electromagnetic relay (not mounted with a PCB board and rotated at an angle) according to a second embodiment of the present invention.
Detailed Description
Examples
Referring to fig. 1 to 13, a measurable electromagnetic relay according to the present invention is a two-way measurable electromagnetic relay, which comprises a shell 1, a PCB 2 and a leading-out sheet 3 which extends from the inside of the shell to the outside of one side edge of the shell and is connected with a contact assembly in the shell, wherein, the number of the leading-out sheets 3 is four, the four leading-out sheets are arranged along one side edge of the shell 1 in sequence, namely, the lead sheet 33, the lead sheet 31, the lead sheet 32 and the lead sheet 34 are arranged in sequence along one side of the shell 1, the two leading-out pieces 31 and 32 in the middle are respectively connected with one path of contact assembly in the shell from one side of one side edge of the shell, one leading-out piece 33 in the two leading-out pieces on the two sides is wound to a position close to the other leading-out piece 34 from the bottom of the shell and is connected with the other path of contact assembly in the shell from the other side edge of one side edge of the shell; in the lead-out sheets 31 and 32, the lead-out sheet 31 comprises a section of plate-type sampling electrode made of high resistivity materialThe resistance sheet 4 and the conductive sheets 6 connected to two ends of the sampling resistance sheet 4, among the lead-out sheets 33 and 34, the lead-out sheet 33 comprises a plate-type sampling resistance sheet 4 made of a high resistivity material and the conductive sheets 6 connected to two ends of the sampling resistance sheet 4, the structure of the sampling resistance sheet 4 is specifically described by the lead-out sheet 33 (as shown in fig. 12 and 13), the structure of the sampling resistance sheet 4 of the lead-out sheet 31 is the same as that of the sampling resistance sheet 4 of the lead-out sheet 33, it is worth to say that the lead-out sheet 33 is an external lead-out sheet, and the lead-out sheet 33 is also connected into the shell through the internal lead-out sheet 331; two sampling pins 41 extending in the same direction are arranged at two ends of the sampling resistor disc 4 and are used for realizing the inflow and outflow of current; the PCB 2 is respectively connected with sampling pins 41 at two ends of two sampling resistance sheets (namely the sampling resistance sheet 4 of the lead-out sheet 31 and the sampling resistance sheet 4 of the lead-out sheet 33) in a plugging and welding way; in the two sampling resistance pieces 4, a through hole 42 is respectively arranged along the thickness direction of the plate body, so that induced current generated in an external alternating magnetic field by a first closed ring S1 formed by the through hole 42 is utilized to cancel induced current generated in the external alternating magnetic field by a second closed ring S2 enclosed by the sampling resistance pieces 4, the sampling pins 41 and the PCB board 2 (as shown in fig. 6), thereby improving the capacity of interference resistance of the relay in measuring the alternating magnetic field. According to the law of electromagnetic induction, the following can be known:
phi is B S, where phi is the magnetic flux passing through the closed loop, t is time, B is the magnetic induction intensity, and S is the area perpendicular to the magnetic field direction; when the area of the first closed loop S1 formed by the through hole 42 is set to the area of the second closed loop S2 enclosed by the sampling resistor sheet 4, the sampling pin 41 and the PCB board 2, the external magnetic interference can be completely cancelled.
In this embodiment, the two sampling pins 41 in the same sampling resistor sheet are respectively connected to the top surfaces of the two ends of the corresponding sampling resistor sheet 4.
Of course, the two sampling pins in the same sampling resistance card may also be connected to the top surfaces of the conducting strips outside the ends of the two ends of the corresponding sampling resistance card, respectively.
In this embodiment, the PCB 2 is connected to the sampling pins 41 of the two sampling resistance cards 4 by plug welding on the same plane.
In this embodiment, the housing 1 is further provided with a coil pin 5 extending out from the housing, and the coil pin 5 and the sampling pins 41 of the two sampling resistance cards 4 are respectively connected with the PCB 2 in an inserting and welding manner on the same plane.
In this embodiment, the sampling pins 41 of the two sampling resistor discs 4 are each formed in a pin type structure.
In this embodiment, the sampling pins 41 are further provided with first bosses 43 at the connection positions with the corresponding sampling resistor discs 4, the cross sections of the first bosses 43 are larger than the cross sections of the sampling pins 41, and the PCB 2 is lapped on the top surfaces of the first bosses 43.
In this embodiment, the sampling pin 41 is further coated with a solder layer 44 on the outer surface of a portion corresponding to the upper surface of the first boss 43.
In this embodiment, the through hole 42 of the sampling resistor disc 4 is located on the vertical line of the midpoint of the connecting line of the two sampling pins 41.
In this embodiment, the coil lead-out pins 5 are distributed on the top surface of the housing close to the other side of the housing opposite to one side of the housing 1, second bosses 11 are further respectively arranged on two sides of the top surface of the housing close to the other side of the housing 1, and the height positions of the top surfaces of the second bosses 11 are flush with the height positions of the top surfaces of the first bosses 43; the PCB board 2 is lapped on the top surface of the first boss 43 and the top surface of the second boss 11.
In this embodiment, the sampling resistor sheet 4 is a manganese copper sheet.
The electronic electric energy meter comprises the two-way metering relay.
The invention relates to a measurable electromagnetic relay and an electronic electric energy meter thereof.A leading-out piece in each path comprises a plate-type sampling resistance piece 4 made of a high-resistivity material, and two sampling pins 41 extending in the same direction are arranged on the sampling resistance piece 4 and used for realizing the inflow and outflow of current; the PCB 2 is respectively connected with the sampling pins 41 of the two sampling resistance cards 4 in an inserting and welding way; in the two sampling resistance pieces 4, a through hole 42 is respectively arranged along the thickness direction of the plate body, so that induced current generated in an external alternating magnetic field by a first closed ring S1 formed by the through hole 42 is utilized to counteract induced current generated in the external alternating magnetic field by a second closed ring S2 enclosed by the sampling resistance pieces 4, the sampling pins 41 and the PCB 2, thereby improving the measuring anti-interference capability of the relay in the alternating magnetic field. The invention utilizes two sampling resistance cards 4 as sampling circuits to carry out metering, and the two sampling resistance cards 4 are provided with sampling pins 41 in the same direction and are directly inserted, welded and fixed with the PCB 2, thereby avoiding a plurality of defects generated by signal line connection in the prior art, and having the characteristics of low manufacturing cost, convenient installation and high automation degree.
Examples
Referring to fig. 1 to 13, a measurable electromagnetic relay and an electronic electric energy meter thereof according to the present invention are different from the first embodiment in that the electromagnetic relay is a single-path measurable electromagnetic relay, the electromagnetic relay has only two lead-out pieces, and in the two lead-out pieces 33 and 34, the lead-out piece 33 includes a plate-type sampling resistance piece 4 made of a high resistivity material. Another difference from the first embodiment is that the second boss 11 is not provided on the top surface of the case, but a third boss 12 is provided at the position of the coil lead-out pin 5, and the PCB 2 is lapped on the top surface of the first boss 43 and the top surface of the third boss 12.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (16)
1. A measurable electromagnetic relay comprises a shell, a PCB and two lead-out sheets which extend from the inside of the shell to the outside of one side edge of the shell and are connected with a contact assembly in the shell; one of the two leading-out pieces comprises a plate-type sampling resistance piece made of a high-resistivity material and conducting pieces connected to two ends of the sampling resistance piece, and two sampling pins extending in the same direction are arranged at two ends of the sampling resistance piece and used for realizing the inflow and outflow of current; the PCB is respectively connected with two sampling pins of the sampling resistance card in an inserting and welding way; the method is characterized in that: in the sampling resistance card, a through hole is formed in the thickness direction of the plate body, so that induced current generated in an external alternating magnetic field by a first closed ring formed by the through hole is utilized to counteract induced current generated in the external alternating magnetic field by a second closed ring surrounded by the sampling resistance card, a sampling pin and a PCB, and the capacity of measuring the interference resistance of the relay in the alternating magnetic field is improved.
2. A metered electromagnetic relay according to claim 1, wherein: the area of the first closed ring is set to be the same as that of the second closed ring, so that the induced current generated by the first closed ring formed by the through hole in the external alternating magnetic field is utilized to completely offset the induced current generated by the second closed ring surrounded by the sampling resistance sheet, the sampling pin and the PCB in the external alternating magnetic field.
3. A metered electromagnetic relay according to claim 1 or 2, characterized in that: the number of the leading-out pieces which extend from the inside of the shell to the outside of one side edge of the shell and are connected with the contact assemblies in the shell is two, and one path of the contact assemblies in the shell is one; one of the two lead-out sheets comprises the sampling resistance sheet.
4. A metered electromagnetic relay according to claim 1 or 2, characterized in that: the number of the lead-out sheets which extend out of one side edge of the shell from the inside of the shell and are connected with the contact assemblies in the shell is four, and the number of the contact assemblies in the shell is two; in the four lead-out pieces, every two lead-out pieces are respectively connected with one path of corresponding contact assembly; in each lead-out piece, one lead-out piece comprises the sampling resistance piece.
5. A metered electromagnetic relay according to claim 1 or 2, characterized in that: and the PCB is connected with the sampling pins of the sampling resistance card in an inserting and welding way on the same plane.
6. A metered electromagnetic relay according to claim 5, characterized in that: the shell is also provided with a coil leading-out pin extending out of the shell, and the coil leading-out pin and the sampling pin of the sampling resistance card are respectively connected with the PCB in an inserting and welding mode on the same plane.
7. A metered electromagnetic relay according to claim 5, characterized in that: and two sampling pins in the same sampling resistance card are respectively connected with the top surfaces in the ends of the two ends of the corresponding sampling resistance card.
8. A metered electromagnetic relay according to claim 5, characterized in that: and two sampling pins in the same sampling resistance card are respectively connected with the top surfaces of the conducting strips outside the ends of the two ends of the corresponding sampling resistance card.
9. A metered electromagnetic relay according to claim 7 or 8, characterized in that: and each sampling pin in the sampling resistance card is respectively set to be in a pin type structure.
10. A metered electromagnetic relay according to claim 6, characterized in that: in the sampling pin, a first boss is further arranged at the connection part of the sampling pin and the corresponding sampling resistance card, the cross section of the first boss is larger than that of the sampling pin, and the PCB is lapped on the top surface of the first boss.
11. A metered electromagnetic relay according to claim 10, wherein: in the sampling pin, a layer of soldering tin is coated outside a part corresponding to the upper surface of the first boss.
12. A metered electromagnetic relay according to claim 1 or 2, characterized in that: the through hole of the sampling resistance card is positioned on a vertical line of the midpoint of the connecting line of the two sampling pins.
13. A metered electromagnetic relay according to claim 10, wherein: the coil leading-out pins are distributed on the top surface of the shell close to the other side edge of the shell opposite to one side edge of the shell, second bosses are respectively arranged on two sides of the top surface of the shell close to the other side edge of the shell, and the height positions of the top surfaces of the second bosses are flush with the height positions of the top surfaces of the first bosses; the PCB board is lapped on the top surface of the first boss and the top surface of the second boss.
14. A metered electromagnetic relay according to claim 3, wherein: the four lead-out pieces are sequentially arranged along one side edge of the shell, wherein the two lead-out pieces in the middle are respectively connected with one path of contact assembly in the shell through one side edge of the shell, one lead-out piece in the two lead-out pieces on two sides is wound to be close to the other lead-out piece from the bottom of the shell, and the other side edge of one side edge of the shell is connected with the other path of contact assembly in the shell.
15. A metered electromagnetic relay according to claim 1, wherein: the sampling resistance card is a manganese copper sheet or a constantan sheet.
16. An electronic electric energy meter is characterized in that: comprising a metered electromagnetic relay according to any one of claims 1 to 14.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659685.7A CN114360963A (en) | 2021-12-30 | 2021-12-30 | Electromagnetic relay capable of metering and electronic electric energy meter thereof |
| KR1020247025736A KR20240132333A (en) | 2021-12-30 | 2022-12-28 | Measuring electromagnetic relay and its electronic power meter |
| PCT/CN2022/142674 WO2023125625A1 (en) | 2021-12-30 | 2022-12-28 | Electromagnetic relay capable of performing measurement, and electronic electricity meter comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659685.7A CN114360963A (en) | 2021-12-30 | 2021-12-30 | Electromagnetic relay capable of metering and electronic electric energy meter thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114360963A true CN114360963A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111659685.7A Pending CN114360963A (en) | 2021-12-30 | 2021-12-30 | Electromagnetic relay capable of metering and electronic electric energy meter thereof |
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| CN (1) | CN114360963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125625A1 (en) * | 2021-12-30 | 2023-07-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of performing measurement, and electronic electricity meter comprising same |
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| CN103630716A (en) * | 2013-11-26 | 2014-03-12 | 厦门宏发电力电器有限公司 | Antijamming shunt and electronic electric meter thereof |
| CN105353184A (en) * | 2015-10-09 | 2016-02-24 | 厦门宏发电力电器有限公司 | Shunt piece, relay, and electronic-type electric energy meter |
| CN112462114A (en) * | 2020-11-06 | 2021-03-09 | 厦门宏发电力电器有限公司 | Electronic electric energy meter convenient to automatic batch assembly |
| CN217426640U (en) * | 2021-12-30 | 2022-09-13 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of metering and electronic electric energy meter thereof |
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2021
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| CN217426640U (en) * | 2021-12-30 | 2022-09-13 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of metering and electronic electric energy meter thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023125625A1 (en) * | 2021-12-30 | 2023-07-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of performing measurement, and electronic electricity meter comprising same |
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