CN107818887A - A kind of intelligent electric meter - Google Patents
A kind of intelligent electric meter Download PDFInfo
- Publication number
- CN107818887A CN107818887A CN201711028451.6A CN201711028451A CN107818887A CN 107818887 A CN107818887 A CN 107818887A CN 201711028451 A CN201711028451 A CN 201711028451A CN 107818887 A CN107818887 A CN 107818887A
- Authority
- CN
- China
- Prior art keywords
- contact
- unit
- driver element
- intelligent electric
- electric meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromagnets (AREA)
- Relay Circuits (AREA)
- Contacts (AREA)
Abstract
A kind of intelligent electric meter relay and intelligent electric meter, including housing, control red line, control black line, trigger winding, rotating unit, moving plate unit, still unit, the first magnet coil, the first retaining element, the second magnet coil and the second retaining element.By the setting of magnet coil and retaining element, make relay after driving current terminates, be maintained to stable switch connection or off-state.
Description
Technical field
The present invention relates to a kind of intelligent electric meter, more particularly, to a kind of intelligent electric meter magnetic relay and intelligence electricity
Table.
Background technology
Relay is a kind of electronic control device, and it has control system（Also known as input circuit）With by control system（Again
Claim output loop）, it is commonly used in automatic control circuit, it is actually to be gone to control the one of larger current with less electric current
Kind " automatic switch ".Therefore play automatically adjust in circuit, safeguard protection, the effect such as change-over circuit.
With the fast development of intelligent grid, and with the horizontal quick raising of distribution management, there is an urgent need to small by people
Type, the time pulse relay of low-power consumption substitute common relay.The operation principle of time pulse relay with it is common it is other after
Electrical equipment is different, and it is by pulse electrical signal actuation contact transition status, and relay continuation of insurance holds this state without energizing quantity.
Magnetic latching relay is a kind of in the presence of drive signal, utilizes the phase interaction of magnet coil and permanent magnet
Make-and-break contact is realized with, relative motion；After drive signal disappearance, last move is remembered using the permanent magnet of inside
Make state, so as to be still switched on or the control element of off-state.It is realized by pulse signal and driven, therefore energy is significantly
Reduce energy consumption.
Currently, magnetic latching relay is widely used in multifunctional electric energy meter, as controlling switch element, controls user
Electricity consumption switches on and off.With carrying out in an all-round way for China's urban and rural power grids construction and upgrading project, " Every household has an ammeter " makes extensive
Implement, pre-payment, long-distance meter reading type intelligent electric meter have obtained rapid popularization.Therefore, magnetic latching relay is especially high-power
Magnetic latching relay will obtain more widely using.
In the prior art, 201210486493.5 patent of invention discloses a kind of intelligent electric meter magnetic latching relay,
By setting contact switch and gear unit, the gear unit controls contact switch to act by magnet, so as to realize that user uses
Electricity switches on and off.But in the invention use level H-shaped gear unit, relay driving voltage disconnect after, should
Angle of inclination of the rotating unit when being acted on by ammeter by external force or ammeter is installed is influenceed, and may cause gear unit not
Balance, makes it turn to the position opposite with expectation, causes to break down.
, being capable of gear unit in guard relay the invention provides a kind of improved intelligent electric meter magnetic latching relay
Stabilization, avoid environment from influenceing.
The content of the invention
As one aspect of the present invention, there is provided a kind of intelligent electric meter relay, including：Housing, control red line, control
Black line processed, trigger winding, rotating unit, moving plate unit and still unit；The housing is used to set relay knot inside it
Structure, including upper shell and lower house；The control red line is with controlling the black line firing line with being arranged at the top of upper shell respectively
Circle electrical connection；The trigger winding is the driving of magnet coil, controlled red line and control black line energization；The rotating unit bag
Rotor magnet is included, is arranged at by rotary shaft below trigger winding, its four side has the fixed strip of extension respectively, in trigger winding
During energization, relative two top surface and the bottom surfaces that can be overlapped on upper shell bottom respectively in the fixed strip；It is described to rotate list
Member is connected by driver element with moving plate unit；Contact is provided with the driver element, can be with the contact on still unit
Closure disconnects；It is characterized in that：Also include the first magnet coil, the first retaining element, the second magnet coil and second
Retaining element；The upper shell includes sidepiece and bottom, and the bottom includes left bottom and bottom right side；The left bottom
With bottom right side with angle diagonally downward；First magnet coil is arranged at the left side of upper shell, second electricity
Magnetic coil is arranged at the right side of upper shell；First retaining element and the second retaining element are respectively arranged in left bottom
On bottom right side；In contact closure, the first retaining element is between rotating unit and left bottom；Disconnected in contact
When, second retaining element is between the rotating unit and bottom right side.
Preferably, first retaining element and the second retaining element are cylinder, and its diameter parallel is in the upper casing
Body bottom, its diameter be less than the fixed strip when being overlapped on bottom between the high fixed strip of horizontal level and upper base surface away from
From.
Preferably, first retaining element and the second retaining element are ferrimagnet, such as iron, nickel, cobalt etc..
Preferably, the coil turn and iron core of the first magnet coil and the second magnet coil are set, when it is excited
The first retaining element or the second retaining element first electromagnetism will be adsorbed onto between rotating unit and upper shell bottom
Coil or the second magnet coil.
Preferably, respectively between specific range between the left side and right side of the trigger winding and upper shell
Every.
Preferably, the relay triggers first magnet coil and the second magnet coil from when being closed into disconnection；
The relay triggers first magnet coil and second magnet coil from when being disconnected to closure.
Preferably, the contact on the still unit has the shape that tilts upward, have on the driver element and its
Corresponding flat board diagonally downward, the flat board have setting groove, contact are provided with the groove, and contact filling is described recessed
Groove；The flat board upper groove lower position is provided with rubbing surface；The rubbing surface insulate with the contact on the driver element；
When driver element moves downward, the contact on the rubbing surface and the driver element contacts on the still unit successively
Contact.
Preferably, the rubbing surface sets photocatalyst material.
Preferably, the barrier plate higher than the flat board is set above the groove, the contact on the still unit is existed
Stop after contacting the contact on the driver element.
As another aspect of the present invention, there is provided a kind of intelligent electric meter, it includes above-mentioned relay.
Brief description of the drawings
Fig. 1 is the structural representation of the intelligent electric meter relay of one embodiment of the invention.
Fig. 2 is the fortune of the driver element and still unit of the intelligent electric meter relay of an improved embodiment of the invention
Dynamic schematic diagram.
Embodiment
In order to illustrate more clearly of technical scheme, embodiment will be used simply to be situated between the present invention below
Continue, it should be apparent that, in describing below is only one embodiment of the present of invention, is come for those of ordinary skill in the art
Say, without having to pay creative labor, other technical schemes can also be obtained according to these embodiments, fallen within
Disclosure of the invention scope.
Referring to Fig. 1, the intelligent electric meter of the embodiment of the present invention is included with relay, housing 1, controls red line 2, controls black line 3,
Trigger winding 4, rotating unit 5, moving plate unit 6, still unit 7, the first magnet coil 8, the first retaining element 9, the second electromagnetism
The retaining element 11 of coil 10 and second.
Housing 1 includes upper shell 101 and lower house 102, for setting relay structure in it.Upper shell 101 includes
Sidepiece and bottom, sidepiece include left side 103 and right side 104, and bottom includes left bottom 105 and bottom right side 106.
Control red line 2 is with controlling black line 3 to be electrically connected respectively with being arranged at the trigger winding 4 at the top of upper shell 101.Firing line
Circle 4 is the driving of magnet coil, controlled red line 2 and the control energization of black line 3.The left side of trigger winding 4 and upper shell 101
Gap is provided between 103 and right side 104.
Rotating unit 5 is arranged at the lower section of trigger winding 4 by rotary shaft 51, and it includes the magnet for being arranged at center, and it four
Side has the fixed strip of extension respectively.When trigger winding 4 is powered, the magnet in rotating unit 5 receives the magnetic field of trigger winding 4
Act on and rotate, relative in fixed strip two is overlapped on the relative top surface in the bottom of upper shell 101 and bottom surface respectively.
The left bottom 105 and bottom right side 105 of upper shell 101 have angle diagonally downward, it is preferred that the angle can
With the angle being arranged between 10 to 30 degree.First retaining element 9 and the second retaining element 11 are respectively arranged at left bottom 105
On upper and bottom right side 106.First retaining element 9 and the second retaining element 11 include ferrimagnet, such as iron, nickel, cobalt etc.,
It can be adsorbed when by magnetic fields.First retaining element 9 and the second retaining element 11 can be arranged to cylinder
Shape, its diameter parallel is in the bottom of upper shell 101, and horizontal level is high when its diameter is overlapped on 101 bottom of upper shell less than fixed strip
Fixed strip and the distance between the upper base surface of upper shell 101.
First magnet coil 8 is arranged at the left side 103 of upper shell 101, and the second magnet coil 10 is arranged at upper shell
Right side 104；First magnet coil 8 and the second magnet coil 10 are all with controlling red line 2 and control black line 3, the controlled He of red line 2
The driving for controlling black line 3 to be powered.The coil turn and iron core of first magnet coil 8 and the second magnet coil 10 are set, swash it
During hair its for the active force of the first retaining element 9 or the second retaining element 11 be more than rotating unit 5 in magnet for first
The active force of the retaining element 11 of retaining element 9 or second, first it will can consolidate between rotating unit 5 and upper shell bottom
Determining element 9, either the second retaining element 11 is adsorbed onto the first magnet coil 8 or the second magnet coil 10.
Rotating unit 5 is connected by driver element 12 with moving plate unit 6, and contact 61 is provided with driver element 12, can
Close or disconnect with the contact 71 on the unit of still 7.
When relay receives the drive signal of closure, by controlling red line 2 and control black line 3 to apply to trigger winding 4
Forward current, the B ends of the magnet of magnetic field suction rotating unit 5 caused by hot-wire coil 4 are close to trigger winding 4, so that driving is single
Contact 61 in member closes with the contact 71 on still unit 7.Meanwhile first magnet coil 8 and the second magnet coil 10 also by
Apply electric current, its magnetic field suction the first retaining element 9 and the second retaining element 11 for generating, make the first retaining element 9 and second
Retaining element 11 is respectively attracted to the first magnet coil 8 and the second magnet coil 10.After driving current terminates, first fixes
Element 9 is rolled to the fixed strip and left bottom of rotating unit 5 along the left bottom 105 of upper shell 101 by Action of Gravity Field
Between 105, so as to fix rotating unit 5.
When relay receives the drive signal of disconnection, by controlling red line 2 and control black line 3 to apply to trigger winding 4
Reverse current, the A ends of the magnet of magnetic field suction rotating unit 5 caused by hot-wire coil 4 are close to trigger winding 4, so that driving is single
Contact 61 in member disconnects with the contact 71 on still unit 7.Meanwhile first magnet coil 8 and the second magnet coil 10 also by
Apply electric current, its magnetic field suction the first retaining element 9 and the second retaining element 11 for generating, make the first retaining element 9 and second
Retaining element 11 is respectively attracted to the first magnet coil 8 and the second magnet coil 10.After driving current terminates, second fixes
Element 11 is rolled to fixed strip and the right side bottom of rotating unit 5 along the bottom right side 106 of upper shell 101 by Action of Gravity Field
Between portion 106, so as to fix rotating unit 5.
The contact structure of the preferred embodiment of the invention, referring to Fig. 2, the contact 71 on still unit 7, which has, to be tilted upward
Shape, there is corresponding flat board 131 diagonally downward, flat board 131, which has, sets groove 132, contact on driver element 12
61 are arranged in groove 132, fill and lead up groove 132.The lower position of 131 upper groove of flat board 132 is provided with rubbing surface 133.Rubbing surface
133 insulate with contact 61, and rubbing surface 133 sets photocatalyst material.When driver element 12 moves downward, rubbing surface 133 and
Contact on driver element 12 contacts the contact 71 on still unit 7 successively.The top of 131 upper groove of flat board 132 is set higher than flat
The barrier plate 134 of plate 131, stop after making contact 61 of the contact 71 on contact driver element 12 on still unit 7.
Presently preferred embodiments of the present invention is the foregoing is only, is not limited to the rule of the substantial technological content of the present invention
Model, if any technology entities that other people are completed or method be defined as with following claims it is identical, or for one
The equivalent change of kind, is regarded as being covered by this Patent right requirement protection domain.
Claims (3)
1. a kind of intelligent electric meter, including magnetic latching relay, the relay includes：Housing, red line is controlled, control black line, touched
Hair line circle, rotating unit, moving plate unit and still unit；The housing is used to set relay structure inside it, including upper
Housing and lower house；The control red line electrically connects with the trigger winding being arranged at the top of upper shell respectively with control black line；
The trigger winding is the driving of magnet coil, controlled red line and control black line energization；The rotating unit includes rotating magnetic
Iron, it is arranged at by rotary shaft below trigger winding, its four side has the fixed strip of extension respectively, when trigger winding is powered,
Relative two top surface and the bottom surfaces that can be overlapped on upper shell bottom respectively in the fixed strip；The rotating unit passes through drive
Moving cell is connected with moving plate unit；Be provided with contact on the driver element, can with the contact closure on still unit or
Disconnect；Contact on the still unit has the shape tilted upward, has corresponding inclination on the driver element
Downward flat board, the flat board have setting groove, and contact is provided with the groove, and the groove is filled in the contact；The flat board
Upper groove lower position is provided with rubbing surface；The rubbing surface insulate with the contact on the driver element；Driver element to
During lower motion, the contact on the rubbing surface and the driver element contacts the contact on the still unit successively.
2. intelligent electric meter according to claim 1, it is characterised in that：The rubbing surface sets photocatalyst material.
3. intelligent electric meter according to claim 2, it is characterised in that：Resistance higher than the flat board is set above the groove
Baffle plate, stop after making contact of the contact on the driver element is contacted on the still unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711028451.6A CN107818887B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711028451.6A CN107818887B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
| CN201610611633.5A CN106229223B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610611633.5A Division CN106229223B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107818887A true CN107818887A (en) | 2018-03-20 |
| CN107818887B CN107818887B (en) | 2019-07-12 |
Family
ID=57536145
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135981.9A Active CN108198732B (en) | 2016-07-30 | 2016-07-30 | A kind of stable method of gear unit in guard relay |
| CN201711028451.6A Active CN107818887B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
| CN201610611633.5A Expired - Fee Related CN106229223B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135981.9A Active CN108198732B (en) | 2016-07-30 | 2016-07-30 | A kind of stable method of gear unit in guard relay |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610611633.5A Expired - Fee Related CN106229223B (en) | 2016-07-30 | 2016-07-30 | A kind of intelligent electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN108198732B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488059A (en) * | 2019-09-02 | 2019-11-22 | 国网河北省电力有限公司沧州供电分公司 | The ammeter powered or powered off based on user credit |
| CN110907818A (en) * | 2019-12-25 | 2020-03-24 | 浦江乐程电子科技有限公司 | Quick verifying attachment of relay function commonly used |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398618B (en) * | 2019-08-02 | 2020-06-19 | 浙江志创企业管理有限公司 | Intelligent ammeter capable of preventing electricity stealing |
| CN112086315B (en) * | 2020-09-14 | 2023-04-18 | 宁夏隆基宁光仪表股份有限公司 | Intelligent electric meter based on novel pulse relay |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746500Y (en) * | 2004-11-12 | 2005-12-14 | 乐清市东星电器有限公司 | Electric contact and welding electrode for welding electric contact |
| CN202373525U (en) * | 2011-12-09 | 2012-08-08 | 沈阳工业大学 | Contact structure of double-breakpoint and low-voltage contactor adopting flexible connection device |
| CN102983043A (en) * | 2012-11-26 | 2013-03-20 | 深圳市航天泰瑞捷电子有限公司 | Magnetic latching relay for intelligent electric meter |
| US20150002248A1 (en) * | 2013-07-01 | 2015-01-01 | Fujitsu Component Limited | Electromagnetic relay |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6431326A (en) * | 1987-07-27 | 1989-02-01 | Nec Corp | Electromagnetic relay |
| GB2342504B (en) * | 1998-10-08 | 2003-04-23 | Wladyslaw Wygnanski | Magnetic drives |
| JP2005183262A (en) * | 2003-12-22 | 2005-07-07 | Matsushita Electric Works Ltd | Single stable type polar electromagnetic relay |
| US7659800B2 (en) * | 2007-08-01 | 2010-02-09 | Philipp Gruner | Electromagnetic relay assembly |
| ES2579934T3 (en) * | 2009-02-04 | 2016-08-17 | Hongfa Holdings U.S., Inc. | Electromagnetic relay assembly |
| CN201766032U (en) * | 2010-06-07 | 2011-03-16 | 宁波天波纬业电器有限公司 | Electric relay |
| CN202217627U (en) * | 2011-07-15 | 2012-05-09 | 浙江正泰电器股份有限公司 | Magnetic latching relay |
| DE102012207589B3 (en) * | 2012-05-08 | 2013-10-02 | Gruner Ag | Relay with double break |
| CN202633183U (en) * | 2012-06-29 | 2012-12-26 | 东莞市中汇瑞德电子有限公司 | Magnetic latching relay with anti-magnetic-inference capacity |
| CN105047480A (en) * | 2015-08-14 | 2015-11-11 | 桂林航天电子有限公司 | Magnetic latching relay with asymmetric magnetic circuit |
| CN204927193U (en) * | 2015-08-31 | 2015-12-30 | 河南瑞特电气有限公司 | Take position feedback's magnetic latching relay |
-
2016
- 2016-07-30 CN CN201810135981.9A patent/CN108198732B/en active Active
- 2016-07-30 CN CN201711028451.6A patent/CN107818887B/en active Active
- 2016-07-30 CN CN201610611633.5A patent/CN106229223B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746500Y (en) * | 2004-11-12 | 2005-12-14 | 乐清市东星电器有限公司 | Electric contact and welding electrode for welding electric contact |
| CN202373525U (en) * | 2011-12-09 | 2012-08-08 | 沈阳工业大学 | Contact structure of double-breakpoint and low-voltage contactor adopting flexible connection device |
| CN102983043A (en) * | 2012-11-26 | 2013-03-20 | 深圳市航天泰瑞捷电子有限公司 | Magnetic latching relay for intelligent electric meter |
| US20150002248A1 (en) * | 2013-07-01 | 2015-01-01 | Fujitsu Component Limited | Electromagnetic relay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488059A (en) * | 2019-09-02 | 2019-11-22 | 国网河北省电力有限公司沧州供电分公司 | The ammeter powered or powered off based on user credit |
| CN110907818A (en) * | 2019-12-25 | 2020-03-24 | 浦江乐程电子科技有限公司 | Quick verifying attachment of relay function commonly used |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106229223B (en) | 2018-02-16 |
| CN108198732A (en) | 2018-06-22 |
| CN107818887B (en) | 2019-07-12 |
| CN108198732B (en) | 2019-10-22 |
| CN106229223A (en) | 2016-12-14 |
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Effective date of registration: 20190621 Address after: 750000 Guangming Road, Yinchuan Economic Development Zone, Ningxia Applicant after: Ningxia LGG instrument Limited by Share Ltd Address before: 050051 Heping West Road, Shijiazhuang, Hebei Province, No. 348 Applicant before: Jia Xiaoqing |