CN203325810U - Indoor electricity measurement and control module - Google Patents
Indoor electricity measurement and control module Download PDFInfo
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- CN203325810U CN203325810U CN2013202422808U CN201320242280U CN203325810U CN 203325810 U CN203325810 U CN 203325810U CN 2013202422808 U CN2013202422808 U CN 2013202422808U CN 201320242280 U CN201320242280 U CN 201320242280U CN 203325810 U CN203325810 U CN 203325810U
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Abstract
The utility model belongs to the technical field of electricity measurement and control, and discloses an indoor electricity measurement and control module. The module comprises a housing, an upper wiring end (2), a lower wiring end (9), an arc guide plate (6), a static contact (4), a moving contact (5), an arc extinguish chamber (7), a bistable electromagnetic drive mechanism, a current transformer (16), and a multi-core measurement and control signal interface plug-in (14), wherein the upper wiring end (2), the lower wiring end (9), the arc guide plate (6), the static contact (4), the moving contact (5), the arc extinguish chamber (7), the bistable electromagnetic drive mechanism, the current transformer (16) and the multi-core measurement and control signal interface plug-in (14) are disposed inside the housing. The module provided by the utility model cooperates with an external controller for use. The external controller is connected with the current transformer (16) through the multi-core measurement and control signal interface plug-in (14), and monitors the current of a power line where the measurement and control module is located in real time. The external controller transmits a pulse signal to the bistable electromagnetic drive mechanism through the multi-core measurement and control signal interface plug-in (14), and the bistable electromagnetic drive mechanism drives the moving contact (4) to contact with or break away from the static contact (5), so as to achieve on-off control of the power line where the measurement and control module is located.
Description
Technical field
The utility model belongs to the power consumption control technical field, relates to a kind of technology of utilizing pulse signal to come control circuit to be switched on or switched off, discloses specifically a kind of indoor electrical measurement and control module.
Background technology
The device that common control electric energy is switched on or switched off is mainly air circuit, its tripping operation (outage) principle is, in circuit, be short-circuited or high-power electric appliance electricity consumption while causing electric current excessive, electromagnet produces very strong magnetic, and its adhesive armature produces action, drives release simultaneously and threads off, complete tripping operation, and while usually not producing very large electric current in situation, air switch can work, and can not produce action.
Above-mentioned air switch is main circuit current when excessive, and the action that itself produces, can't realize auto-breaking for little electric current.In this case, easily produce severe power consumption phenomenon,, but working long hours, and electric current now is smaller when unnecessary such as television set, air switch can't cut off the power supply, thereby causes unnecessary waste.
For the problems referred to above, the patent that the patent No. is 201020120138.2 discloses a kind of indoor electrical measurement control module that detects and be controlled in one that collects, this module is connected to controlled circuit by current transformer, the electric current of controlled circuit is input to peripheral control unit after conversion, by bistable electromagnetic actuation mechanism, drives moving contact to realize being switched on or switched off of controlled circuit.Outer controller, by internal circuit and routine processes analysis, is judged the size of current of inputting, and pulse is carried out in transmission as required, controls bistable electromagnetic actuation mechanism, realizes being switched on or switched off of user's electric energy.
Its structural principle is, outside independently distribution controller provides the pulsed drive electromagnet, the static gag bit of electromagnet obtains electric adhesive moving armature, the end-tooth pushing drawing rod boss of moving armature bottom slides along inclined-plane, the inboard boss lower end of shell, after sliding, the pull bar boss can enter in the width groove that outer casing inner wall evenly distributes alternately the opening and closing of contact in the slip actuation means in the wide groove of wall and narrow groove in the enclosure of pull bar boss.
Above-mentioned electricity consumption control module mainly has following shortcoming.
1, the electromagnetism actuating mechanism is movement in one direction mechanism, no matter the pulse of controlling electromagnet is forward or oppositely input, electromagnet is downward to the drive actions of armature all the time, folding condition between dynamic and static contact in module, mated condition by moving armature end-tooth and pull bar boss determines, electromagnet only limits to switch opening or close between two states to the control action of dynamic and static contact, after carrying out control, dynamic and static contact folding condition, by the Determines before carry out controlling, electromagnet can't initiatively determine that when time controlling be to control dynamic and static contact to open or close.Therefore, outside distribution controller, except relying on circuit on-off detection and two kinds of methods of logging modle on off operating mode, can't obtain the on off operating mode of judge module inside.Yet, circuit on-off detects disconnection and other position of circuit that can not distinguish between dynamic and static contact and opens circuit, when open circuit in other position of circuit (as the power consumption equipment its own switch is closed), the method that adopts circuit on-off to detect can cause the misjudgment of inside modules on off operating mode.And the method for logging modle on off operating mode not only externally arranges initial condition in distribution controller can make troubles to the user, when exist carry out unsuccessfully or because of the maintenance people for a change in the module during situation such as on off operating mode, can cause misjudgment equally.
Use this control module, in a lot of situations, can't realize the effective control by electric line, even wrong control, for example, power consumption equipment its own switch on certain circuit is closed, but the control module of this circuit is conducting state, when needs disconnect this and use electric line, peripheral control unit can be because the break-make testing result keep the control module conducting state for this circuit disconnects.Again for example, peripheral control unit to a certain when the off-state control module send to be carried out pulse it is connected, because of external disturbance, causing signal to transmit fails, control module moves, but peripheral control unit records this time, controls operation, and the state of having rewritten control module in memory is for logical, while controlling again this electricity consumption circuit disconnection next time, can this circuit be connected by mistake.
2, inside modules adopts square to lead arc plate cooperation arc control device arc extinguishing, and arc quenching effect is not good.
3, on the integral layout of each parts of module, belong to the electrical interconnection of the multicore socket connector of light current connection to the electromagnetism actuating mechanism, with belong to upper terminals that forceful electric power the is connected electrical interconnection to lower terminals and mutually intersect, the forceful electric power connection line easily produces and disturbs weak electric signal, and the reliability of control module is reduced.
4, general modular connecting and disconnecting of the circuit control device, as common circuit breaker, for the ease of being installed on wall, all arrange draw-in groove and slide fastener structure at the housing rear side, and described draw-in groove matches with the strip installed cassette on being fixed in wall with slide fastener.The process that circuit breaker is installed can be divided into two steps: the first step by an angle of circuit breaker inclination, makes draw-in groove be stuck in edge on deck, now edge under the corresponding deck in the inclined-plane, upper end of slide fastener; Second step, promote the circuit breaker bottom to the deck direction, and circuit breaker is rotated until slide fastener blocks edge under deck to returning positive direction, and now circuit breaker just returns, and installs.This draw-in groove coordinates the mounting structure of slide fastener, while being applied to above-mentioned electricity consumption measure and control device, position and the structural design of the multicore socket connector for communicating by letter with controller is had to direct impact.Owing to adopting draw-in groove to coordinate the product of the mounting structure of slide fastener, in installation process, need angle of unitary rotation, if, the pin that is fixedly installed multicore socket connector and coordinates with multicore socket connector on product shell and wall respectively, in installation process, whole rotation can bending even damage pin.If, connect pin by flexible conductor, after product is fixing on wall, separately pin is inserted in the jack of multicore socket connector in addition,, need to reserve in the product installation site enough large space on the one hand, to facilitate staff or instrument, stretch into the operation of pegging graft, on the other hand, other grafting operation has also brought trouble to installation process.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model has been to provide a kind of indoor electrical measurement control module of optimization.
The technical scheme that the utility model adopts is: a kind of indoor electrical measurement control module, pack housing, it is characterized in that, in described housing, nock and lower end are fixedly installed respectively terminals and lower terminals, what be respectively equipped with between described upper terminals and lower terminals that upper end is connected with upper terminals leads the arc plate, be positioned at moving contact and the fixed contact of leading arc plate inboard, and be positioned at described arc control device of leading arc plate below, in described housing, rear portion is provided with bistable electromagnetic actuation mechanism, and the current transformer and the multicore measurement and control signal interface card that are positioned at bistable electromagnetic actuation mechanism top, described bistable electromagnetic actuation mechanism comprises the bi-directional electromagnetic actuating mechanism, swinging block by connecting rod and the interlock of bi-directional electromagnetic actuating mechanism, the flexure strip that rear end and swinging block are fixing, described moving contact is fixed on the flexure strip front end, one section two ends through the wire of the coil of current transformer is connected with moving contact with upper terminals respectively, and described fixed contact is fixed on one and the fixing conducting strip upper end of housing, and the conducting strip lower end is connected with lower terminals.
Described multicore measurement and control signal interface card comprises pin base and is arranged on the conductive jack on pin base, described pin base front end is assemblied on housing by a rotating shaft, described pin base below is provided with a Compress Spring, and top, described Compress Spring upper end is pressed in below pin base.The position of the corresponding pin base of described housing rear side is provided with opening.
Described housing rear side is provided with draw-in groove and the slide fastener coordinated with the strip installed cassette.
Control module described in the utility model is optimized the layout of each parts, to belong to upper terminals that forceful electric power connects to the electrical interconnection of lower terminals and lead in the first half spaces of forceful electric power associated components centralized layout in housing such as arc plate, arc control device, will belong to the multicore measurement and control signal interface fitting of light current connection in the latter half space of electrical interconnection layout in housing of bi-directional electromagnetic actuating mechanism.Weak current part is except the current transformer with the electric line direct correlation, and other circuit and parts are all relatively away from forceful electric power circuit and parts.Can effectively avoid the impact of forceful electric power on weak electric signal.Be conducive to ensure stability and the reliability of product.
For product, by draw-in groove, coordinate the installation of mode on wall of slide fastener to affect the problem of the setting of measurement and control signal interface, the utility model has designed a kind of rotatable certain angle multicore measurement and control signal interface card structure has been set, under the pressure effect of the top of Compress Spring, on the pin base of Multi-core control signaling interface plug-in unit, the direction of conductive jack and housing fore-and-aft direction are an inclination angle, when carrying out the first step of module installation, due to an angle of module inclination, conductive jack on pin base just can be arranged on installed cassette on the pin direction parallel, pin can insert conductive jack smoothly, when second step is installed, along with module whole is rotated, multicore measurement and control signal interface card rotates with respect to housing, conductive jack on its pin base is protected parallel with pin direction on installed cassette all the time.This multicore measurement and control signal interface card arranges structure, not only be convenient to the installation (identical with common circuit breaker mounting means) of control module, multicore measurement and control signal interface card can also guarantee the attractive in appearance of product arranging of housing rear side, also can effectively avoid the damage of measurement and control signal interface.
The problem that adopts unidirectional electromagnetism actuating mechanism to bring for existing control module, the utility model has adopted the bi-directional electromagnetic actuating mechanism to control contacting and disengagement of moving contact and fixed contact in control module, the connecting and disconnecting state of two direction of action difference respective modules internal circuits, this scheme can be controlled and break away from the dependence to the current on off operating mode of control module the break-make of control module by outside distribution controller, no matter control module is when what state of pre-treatment, all can control its disconnection by a forward input pulse, or a reverse input pulse is controlled its connection.It is example by electric line that the forward input pulse bi-directional electromagnetic actuating mechanism of take disconnects, when electric line is used in the needs disconnection, peripheral control unit only need be exported a direct impulse to control module and get final product, if this module is when the pre-treatment on-state, the bi-directional electromagnetic actuating mechanism will disconnect this module, if this module is current in off-state, the bi-directional electromagnetic actuating mechanism is not moved.
In technique scheme of the present utility model, described bi-directional electromagnetic actuating mechanism is comprised of electromagnet assembly and work shape wobble component, described electromagnet assembly comprises solenoid and is arranged on the left side at two ends, solenoid left and right, right yoke, a described left side, the equal upper end of right yoke is with elbow, described work shape wobble component is arranged on housing by rotating shaft, described work shape wobble component comprises permanent magnet, be arranged on permanent magnet, the upper magnetic conductive iron sheet at lower two ends and lower magnetic conductive iron sheet, with permanent magnet, reach, the relatively-stationary fork of lower magnetic conductive iron sheet, the elbow of described left yoke is between upper magnetic conductive iron sheet left end and lower magnetic conductive iron sheet left end, the elbow of described right yoke is between upper magnetic conductive iron sheet right-hand member and lower magnetic conductive iron sheet right-hand member, described connecting rod two ends are hinged with fork and swinging block respectively.
The bi-directional electromagnetic actuating mechanism, by the parts transmission such as fork, connecting rod, swinging block, flexure strip actions, can effectively amplify the action of electromagnetism actuating mechanism, thus moving contact is separated with fixed contact more thorough, or combination is tightr.
The pin base rear end of described multicore measurement and control signal interface card is provided with four conductive jacks, wherein two conductive jacks use holding wire to be connected with two signal output parts (secondary side of current transformer) of current transformer by current detecting, and two other conductive jack is controlled with holding wire and is connected with two power ends of the electromagnet of bi-directional electromagnetic actuating mechanism by break-make.
As a kind of improvement, described position of leading the corresponding arc control device of arc plate top has a bent angle, and leading the Lower Half of bent angle of arc plate and the angle of arc control device upper surface is 45 degree.Its advantage is, when moving contact, with fixed contact, separates while producing arc spark, and the sweep of leading the arc plate can be good at electric arc is blocked, and makes that arc spark is as much as possible to be fallen in arc control device.
For the ease of upper and lower terminals, with power line, be connected, the nut of the trip bolt of upper and lower terminals all arranges forward.The patch jack of described upper terminals upward, the upper connection jaws on corresponding housing; The patch jack of described lower terminals down, the lower connection jaws on corresponding housing.
The accompanying drawing explanation
Fig. 1 is module off-state structural representation described in the utility model.
Fig. 2 is module closure state structural representation described in the utility model.
Fig. 3 is inside modules bistable electromagnetic actuation described in the utility model mechanism the first working state structure schematic diagram.
Fig. 4 is inside modules bistable electromagnetic actuation described in the utility model mechanism the second working state structure schematic diagram.
Fig. 5 is that module described in the utility model is arranged on mounting base pre-structure schematic diagram.
Fig. 6 is that module described in the utility model is arranged on structural representation after mounting base.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
With reference to Fig. 1,2, indoor electrical measurement control module described in the utility model comprises housing 1 and is arranged on upper terminals 2, lower terminals 9 in housing 1, leads arc plate 6, moving contact 4, fixed contact 5, arc control device 7, bistable electromagnetic actuation mechanism, current transformer 16 and multicore measurement and control signal interface card 14, described bistable electromagnetic actuation mechanism comprises bi-directional electromagnetic actuating mechanism 10, connecting rod 25, swinging block 26, flexure strip 30, and described moving contact 4 is fixed on flexure strip 30 front ends; Wire 3 is through the coil of current transformer 16, and the two ends of wire 3 are connected with moving contact 4 with upper terminals 2 respectively, and described fixed contact 5 is fixed on conducting strip 8 upper ends, and conducting strip 8 lower ends are connected with lower terminals 9.Lead the corresponding arc control device of arc plate 6) position of top has a bent angle, and leading the Lower Half of bent angle of arc plate 6 and the angle of arc control device 7 upper surfaces is 45 degree.
Indoor electrical measurement control module described in the utility model is carried out break-make control by peripheral control unit.The current detecting unit of peripheral control unit is connected with current transformer 16 with holding wire 15 by multicore measurement and control signal interface card 14 and current detecting, Real-Time Monitoring is carried out to the electric current of electric line in the control module place, when needs are communicated with or disconnect while using electric line, the on-off control unit of peripheral control unit is controlled and is sent pulse signal with holding wire 11 by multicore measurement and control signal interface card 14 and break-make, bi-directional electromagnetic actuating mechanism 10 obtains pulse signal and performs an action, successively by connecting rod 25, swinging block 26, flexure strip 30 pulls moving contact 4 contacts or breaks away from fixed contact 5, completing break-make controls.
With reference to Fig. 3,4, described bi-directional electromagnetic actuating mechanism (10) is comprised of electromagnet assembly and work shape wobble component, work shape wobble component is comprised of permanent magnet 22, upper magnetic conductive iron sheet 29, lower magnetic conductive iron sheet 19, fork 28, permanent magnet 22 is clipped between magnetic conductive iron sheet 29 and lower magnetic conductive iron sheet 19, working of plastics 20 is upper iron plate 29, lower iron plate 19 with together with magnet 22 is cast in, wherein the upper end of magnet 22 is the N utmost point, and lower end is the S utmost point.Fork 28 is fixed together with working of plastics 20,
Electromagnet assembly is comprised of solenoid 18 and the left and right yoke 23,17 that is arranged on two ends, solenoid left and right, the equal upper end of described left and right yoke 23,17 is with elbow, the elbow of described left yoke 23 is between upper magnetic conductive iron sheet 29 left ends and lower magnetic conductive iron sheet 19 left ends, the elbow of described right yoke 17 is between upper magnetic conductive iron sheet 20 right-hand members and lower magnetic conductive iron sheet 19 right-hand members, and described connecting rod 25 two ends are hinged with fork 28 and swinging block 25 respectively.
With reference to the module off-state shown in figure 1.When the needs closing of contact, the break-make of multicore plug-in unit 14 is controlled by holding wire port input control negative pulse, electromagnet coil 18 obtains electric, the coil reverse-conducting, left yoke 23 produces N utmost point magnetic, right yoke 17 produces S utmost point magnetic, according to principle of opposite sex attraction, the left end of the right-hand member of upper magnetic conductive iron sheet 29 and lower magnetic conductive iron sheet 19 respectively with right yoke 23 and 17 adhesives of left yoke, whole work shape wobble component clockwise rotates around central shaft 21, fork 28 drives connecting rod 25 through its end 24 and pulls swinging block 26 to turn clockwise around bearing pin 27, driving moving contact 4 touches mutually with fixed contact 5, module becomes closure state.As shown in Figure 2,3.
With reference to the module closure state shown in figure 2.When the needs contact disconnects, the break-make of multicore plug-in unit 14 is controlled by holding wire port input control positive pulse, electromagnet coil 18 obtains electric, the coil forward conduction, left yoke 23 produces S utmost point magnetic, right yoke 17 produces N utmost point magnetic, according to principle of opposite sex attraction, the right-hand member of the left end of upper magnetic conductive iron sheet 29 and lower magnetic conductive iron sheet 19 respectively with left yoke 23 and 17 adhesives of right yoke, whole work shape wobble component rotates counterclockwise around central shaft 21, fork 28 drives connecting rod 25 through its end 24 and pulls swinging block 26 to be rotated counterclockwise around bearing pin 27, driving moving contact 4 separates with fixed contact 5, module becomes off-state.As shown in Figure 1,3.
With reference to Fig. 5,6, described housing 1 rear side is provided with draw-in groove 38 and the slide fastener 37 coordinated with installed cassette 39.Described multicore measurement and control signal interface card 14 comprises pin base, be provided with four conductive jacks 34 on pin base, wherein two conductive jacks use holding wire 15 to be connected with two signal output parts of current transformer 16 by current detecting, and two other conductive jack is controlled with holding wire 11 and is connected with two power ends of the electromagnet of bi-directional electromagnetic actuating mechanism 10 by break-make.Described pin base front end is assemblied on housing 1 by rotating shaft 35, and Compress Spring 13 tops, upper end are pressed in below pin base, and the relative housing in lower end 12 of Compress Spring 13 is fixed, and the position of the corresponding pin base of described housing rear side is provided with opening; Multicore measurement and control signal interface card 14 under nature due to the top power effect of Compress Spring 13, clockwise rotate certain angle around the relative housing of fixed axis 35, rear end is inclined upwardly, and multicore measurement and control signal interface card 14 presents certain angle with the integral body of control module 36.
Indoor electrical measurement control module 36 is with after mounting base 31 is connected, and spring 13 is compressive state, and it is more firm that the release force of spring makes conductive jack 34 be connected with contact pin 33.
Claims (5)
1. an indoor electrical measurement control module, pack housing (1), it is characterized in that, the interior nock of described housing (1) and lower end are fixedly installed respectively terminals (2) and lower terminals (9), what be respectively equipped with between described upper terminals (2) and lower terminals (9) that upper end is connected with upper terminals leads arc plate (6), be positioned at and lead arc plate (6) inboard moving contact (4) and fixed contact (5), and be positioned at described arc control device (7) of leading arc plate below, the interior rear portion of described housing (1) is provided with bistable electromagnetic actuation mechanism, and the current transformer (16) and the multicore measurement and control signal interface card (14) that are positioned at bistable electromagnetic actuation mechanism top, described bistable electromagnetic actuation mechanism comprises bi-directional electromagnetic actuating mechanism (10), swinging block (26) by connecting rod (25) with bi-directional electromagnetic actuating mechanism (10) interlock, the flexure strip (30) that rear end and swinging block (26) are fixing, described moving contact (4) is fixed on flexure strip (30) front end, one section two ends through the wire (3) of the coil of current transformer (16) is connected with moving contact (4) with upper terminals (2) respectively, described fixed contact (5) be fixed on one with fixing conducting strip (8) upper end of housing, conducting strip (8) lower end is connected with lower terminals (9),
Described multicore measurement and control signal interface card (14) comprises pin base and is arranged on the conductive jack on pin base, described pin base front end is assemblied on housing (1) by a rotating shaft, described pin base below is provided with a Compress Spring, top, described Compress Spring upper end is pressed in below pin base, and the position of the corresponding pin base of described housing rear side is provided with opening.
2. a kind of indoor electrical measurement control module according to claim 1, it is characterized in that, described bi-directional electromagnetic actuating mechanism (10) is comprised of electromagnet assembly and work shape wobble component, described electromagnet assembly comprises solenoid (18) and is arranged on the left side at solenoid (18) two ends, left and right, right yoke (23, 17), a described left side, right yoke (23, 17) equal upper end is with elbow, described work shape wobble component is arranged on housing by rotating shaft (21), described work shape wobble component comprises permanent magnet (22), be arranged on permanent magnet (22), the upper magnetic conductive iron sheet (29) at lower two ends and lower magnetic conductive iron sheet (19), with permanent magnet (22), reach, lower magnetic conductive iron sheet (29, 19) relatively-stationary fork (28), the elbow of described left yoke (23) is positioned between magnetic conductive iron sheet (29) left end and lower magnetic conductive iron sheet (19) left end, the elbow of described right yoke (17) is positioned between magnetic conductive iron sheet (20) right-hand member and lower magnetic conductive iron sheet (19) right-hand member, described connecting rod (25) two ends are hinged with fork (28) and swinging block (25) respectively.
3. a kind of indoor electrical measurement control module according to claim 1, it is characterized in that, the pin base rear end of multicore measurement and control signal interface card (14) is provided with four conductive jacks, wherein two conductive jacks are connected with two signal output parts of current transformer (16) by current detecting holding wire (15), and two other conductive jack is controlled with holding wire (11) and is connected with two power ends of the electromagnet of bi-directional electromagnetic actuating mechanism by break-make.
4. a kind of indoor electrical measurement control module according to claim 1, is characterized in that, the nut of the trip bolt of upper terminals and lower terminals all arranges forward.
5. a kind of indoor electrical measurement control module according to claim 1, is characterized in that, the position of leading the corresponding arc control device of arc plate (6) (7) tops has a bent angle, and leading the Lower Half of bent angle of arc plate (6) and the angle of arc control device (7) upper surface is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202422808U CN203325810U (en) | 2013-05-06 | 2013-05-06 | Indoor electricity measurement and control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202422808U CN203325810U (en) | 2013-05-06 | 2013-05-06 | Indoor electricity measurement and control module |
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| Publication Number | Publication Date |
|---|---|
| CN203325810U true CN203325810U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202422808U Withdrawn - After Issue CN203325810U (en) | 2013-05-06 | 2013-05-06 | Indoor electricity measurement and control module |
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| Country | Link |
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| CN (1) | CN203325810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295848A (en) * | 2013-05-06 | 2013-09-11 | 中国计量学院 | Electric measurement and control module used indoors |
| CN105161368A (en) * | 2015-09-22 | 2015-12-16 | 林勇 | Spring-type magnetic holding relay |
-
2013
- 2013-05-06 CN CN2013202422808U patent/CN203325810U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295848A (en) * | 2013-05-06 | 2013-09-11 | 中国计量学院 | Electric measurement and control module used indoors |
| CN103295848B (en) * | 2013-05-06 | 2015-08-05 | 中国计量学院 | A kind of indoor electric control module |
| CN105161368A (en) * | 2015-09-22 | 2015-12-16 | 林勇 | Spring-type magnetic holding relay |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131204 Effective date of abandoning: 20150805 |
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| RGAV | Abandon patent right to avoid regrant |