CN111448636A - Integrated electromechanical device - Google Patents
Integrated electromechanical device Download PDFInfo
- Publication number
- CN111448636A CN111448636A CN201880061967.7A CN201880061967A CN111448636A CN 111448636 A CN111448636 A CN 111448636A CN 201880061967 A CN201880061967 A CN 201880061967A CN 111448636 A CN111448636 A CN 111448636A
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- Prior art keywords
- variable position
- control circuit
- electromechanical device
- conductive terminal
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
-
- 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)
- Electromagnetism (AREA)
- Micromachines (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
An integrated electromechanical device (1) is described, comprising: -a support body (100), a first fixed contact (158), first and second variable position contacts (M1, M2), first and second control circuits (138, 138'); the first and second variable position contacts (M1, M2) are connected to each other by the first fixed contact (158) in a conducting state and are not electrically connected to each other in an isolating state; -controlling the transition between the two states by a first and/or a second control circuit (138, 138'); -at least one first conductive terminal (110) and at least one second conductive terminal (112) each comprising an end region (100A,112A), one arranged on a first plane (x1) and the other on a second plane (x2) different from and parallel to the first plane (x 1); at least one of the first conductive terminal (110) and the second conductive terminal (112) is a terminal connected to the first or second variable position contact (M1, M2) or a terminal of the first or second control circuit (138, 138').
Description
Technical Field
The present invention relates to electromechanical devices, in particular for highly integrated electrical appliances. In particular, the present invention relates to an integrated electromechanical device with back-to-back dual mounting.
Background
Recent developments in electronics have made it possible to reduce the overall size of consumer and industrial electronic products. In particular, the reduction in size of products is a natural consequence of the ongoing improvement in the design of internal components that are often redesigned based on new technology.
Current electromechanical devices are produced using the concept of assembly on a circuit board; unlike the present invention, this involves manufacturing a larger circuit board, and in the case of a plurality of overlapped circuit boards, it is necessary to use a connector for electrical connection between at least two circuit boards, so that space and cost are additionally increased.
Disclosure of Invention
It is an object of the present invention to propose an integrated electromechanical device that can be used in all products having a plurality of circuit boards or a single circuit board shaped so as to form an overlap of two areas, inside which the electromechanical device can be inserted.
This structure allows further integration of the products, for example by reducing the area of the circuit boards constituting these products (for example by eliminating the internal connection connectors between the various electronic boards) and therefore also reducing their mounting area.
According to an aspect of the present invention, the above and other objects and advantages are achieved through an integrated electromechanical device having the features defined in claim 1. Preferred implementations of the invention are defined in the dependent claims, which are intended as an integral part of the present description.
In summary, the present invention relates to an integrated electromechanical device comprising: a support body comprising a plurality of sides; a first fixed contact; a first variable position contact; a second variable position contact; a first control circuit provided for controlling the first variable position contact; and a second control circuit provided for controlling the second variable position contact.
The first variable position contact and the second variable position contact are electrically connected to each other via the first fixed contact in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state.
The transition from the conducting state to the isolating state and vice versa is controlled by the first control circuit and/or the second control circuit.
The integrated electromechanical device further comprises at least one first conductive terminal and at least one second conductive terminal arranged on or protruding from at least one side of the support body.
The at least one first and second conductive terminals each comprise a respective connection end region distal with respect to the support body, the connection end regions being respectively arranged one on a first connection plane and the other on a second connection plane different from and parallel to the first connection plane.
At least one of the first conductive terminal and the at least one second conductive terminal is a terminal connected to the first variable position contact or the second variable position contact. Alternatively, at least one of the at least one first conductive terminal and the at least one second conductive terminal is a terminal of a first control circuit or a second control circuit.
In this way, the first and second conductive terminals may be arranged one directly connected to the first circuit board and the other directly connected to the second circuit board or to a connector or cable, respectively. Alternatively, the first and second conductive terminals may be arranged one to be connected to a first region of the flexible circuit board and the other to be connected to a second region of the flexible circuit board, respectively.
Suitably, since the electromechanical device described above comprises at least one variable position contact and corresponding control circuitry for the variable position contact, an electronic product may be formed that is also composed of several circuit boards, even if for example a general purpose electronic signal or power supply is connected without the aid of a dedicated internal connector.
Drawings
Further features and advantages of the invention will become apparent from the following detailed description, provided purely by way of non-limiting example, with reference to the accompanying drawings, in which:
Fig. 1 shows a side view of the first variable position contact M1 and the control circuit 138, which allows for back-to-back mounting of two circuit boards;
Figure 2 shows an internal view of an embodiment of the integrated electromechanical device;
FIG. 3 shows a detailed view of the variable position contacts and the fixed contacts of the integrated electromechanical device shown in FIG. 2;
Figure 4 is a perspective view of an example of an integrated electromechanical device according to the invention.
Detailed Description
Before explaining several embodiments of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology are for the purpose of description and should not be regarded as limiting. The use of "including" and "comprising" and variations thereof is understood to encompass the elements recited thereafter and equivalents thereof, as well as additional elements and equivalents thereof.
In the first exemplary embodiment, the integrated electromechanical device 1 includes: a support body 100 comprising a plurality of sides 301, ·, 306; a first fixed contact 158; a first variable position contact M1; a second variable position contact M2; a first control circuit 138 arranged to control the first variable position contact M1; and a second control circuit 138' arranged to control the second variable position contact M2.
The first variable position contact M1 and the second variable position contact M2 are electrically connected to each other via the first fixed contact 158 in a predetermined conduction state, and are not electrically connected to each other in a predetermined isolation state.
The transition from the conducting state to the isolating state and vice versa is controlled by the first control circuit 138 and/or the second control circuit 138'.
The integrated electromechanical device 1 further comprises at least one first conductive terminal 110 and at least one second conductive terminal 112, which are arranged on or extend from at least one side 301, 301.
For example, as shown in said fig. 1, at least one electrically conductive first terminal 110 and at least one electrically conductive second terminal 112 may protrude from two opposite sides of the support body.
The at least one first conductive terminal 110 and the at least one second conductive terminal 112 each comprise a respective connection end region 100A, 112A distal with respect to the support body 100, respectively one arranged on a first connection plane x1 and the other on a second connection plane x2 (different and parallel to said first connection plane x 1).
At least one of the first conductive terminal 110 and the at least one second conductive terminal 112 is a terminal connected to the first variable position contact M1 or the second variable position contact M2, or at least one of the at least one first conductive terminal 110 and the at least one second conductive terminal 112 is a terminal of the first control circuit 138 or the second control circuit 138'. For example, as shown in the embodiment in fig. 1, there are two first conductive terminals 110, each of which may be a conductive terminal of the control circuit 138 or a variable position contact terminal M1.
The at least one first and second electrically conductive terminals 110, 112 may be arranged one directly connected to the first circuit board 201 and the other directly connected to the second circuit board 202 or a corresponding connector or cable, respectively, or the first and second electrically conductive terminals 110, 112 may be arranged one connected to the first region a1 of the flexible circuit board 203 and the other connected to the second region a2 of the same flexible circuit board 203, respectively.
For example, the connector or cable may be soldered or plugged directly into the conductive terminal 112.
In fig. 1, the at least one conductive terminal 110 and the at least one second conductive terminal 112 are connected to a first circuit board 201 and a second circuit board 202, respectively.
Flexible circuit boards become very useful in the case of circuit boards having complex geometries that cannot be met by typical circuit boards. For example, the flexible circuit board may be made of graphene.
It is therefore apparent that the device forms a structure with one or more circuit boards having a distance d between them.
For example, the first and second conductive terminals 110, 112 may be connected to the circuit board by soldering.
Furthermore, as can be seen in fig. 1, the terminals projecting from the sides of the body 100 may be, as an example, pins 112 of substantially linear shape, one end of which is fitted directly into the body 100 and the other end is intended for soldering, may be rectilinear or substantially bent at about 90 degrees with respect to the direction of projection from the body 100, or may be soldered directly to a corresponding connector or cable of suitable dimensions.
Also by way of non-limiting example, in the embodiment shown in fig. 1, a first conductive terminal 110 having an end intended for soldering bent substantially at about 90 degrees may be connected to the first circuit board 201 via a conductive region 210 comprised in the circuit board 201, a second conductive terminal 112 having a linear end intended for soldering being connected to the second circuit board 202 via a conductive region 212, a hole being provided in the center of the conductive region 212 for inserting the second conductive terminal 112, the conductive region 212 being comprised in the circuit board 202.
In one embodiment given as an example, the first connection plane x1 may be arranged at a distance d1 from the body 100 according to a first direction v1, and the second connection plane x2 is arranged at a distance d2 from the body 100 according to a second direction v2 opposite to said direction v 1.
It is also apparent from the figures that the integrated electro-mechanical device may include a plurality of first conductive terminals 110 and/or a plurality of second conductive terminals 112.
In another embodiment shown in FIG. 3, the electromechanical device may include the second fixed contact 158', the third variable position contact M3 and the fourth variable position contact M4, a third control circuit 138 ' provided for controlling the third variable position contact M3, and a fourth control circuit 138 ' provided for controlling the fourth variable position contact M4.
The second fixed contact 158 'may be arranged such that the third variable position contact M3 and the fourth variable position contact M4 are electrically connected to each other via the second fixed contact 158' in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state. The transition from the conducting state to the isolating state and vice versa is controlled by the third control circuit 138 "and/or the fourth control circuit 138'".
Furthermore, in another embodiment, the integrated electromechanical device may comprise a third fixed contact 158 "and a fourth fixed contact 158'".
The third fixed contact 158 "may be arranged such that the first variable position contact M1 and the third variable position contact M3 are electrically connected to each other via said third fixed contact 158" in a predetermined conducting state and are not electrically connected to each other in a predetermined isolating state, the transition from the conducting state to the isolating state being controlled by the first control circuit 138 and/or the third control circuit 138 ", and vice versa.
Furthermore, the fourth fixed contact 158 '"may be arranged such that the second variable position contact M2 and the fourth variable position contact M4 are electrically connected to each other via said fourth fixed contact 158'" in a predetermined conducting state and are not electrically connected to each other in a predetermined isolating state, the transition from the conducting state to the isolating state being controlled by the second control circuit 138 'and/or the fourth control circuit 138' "and vice versa.
Furthermore, the third fixed contact 158 ″ and the fourth fixed contact 158 '"may allow the second variable position contact M2 and the third variable position contact M3 to be electrically connected to each other via said third fixed contact 158 ″ in a predetermined conducting state and not to be electrically connected to each other in a predetermined isolating state, the transition from the conducting state to the isolating state being controlled by the second control circuit 138' and/or the third control circuit 138", and vice versa.
The third and fourth fixed contacts 158 ″ and 158 ' "may also allow the first and fourth variable position contacts M1 and M4 to be electrically connected to each other via the fourth fixed contact 158 '" in a predetermined conducting state and not to be electrically connected to each other in a predetermined isolating state, the transition from the conducting state to the isolating state being controlled by the first and/or fourth control circuits 138 and 138 ' ", and vice versa.
As shown in detail in fig. 3, the second fixed contact 158' and the third fixed contact 158 ″ may substantially form an x shape. In an alternative embodiment (not shown), the second fixed contact 158' and the third fixed contact 158 ″ can be substantially parallel.
In another embodiment (not shown), the electromechanical device may include the first variable position contact M1, the second variable position contact M2, the third variable position contact M3, the first fixed contact 158, and the third fixed contact 158 "such that it may function as a switch.
The support 100 may also comprise at least one protrusion 350 intended to act as a centering element to align said at least one circuit board 201, 202 with said electromechanical device 1, or to fix a minimum distance d between said support 100 and at least one circuit board 201, 202, 203.
For example, each control circuit may control a single moving contact independently of each other.
As an example, the control circuit may comprise at least one coil, among other mechanical components.
Still by way of example, the transition from the conducting state to the isolating state may be made by attracting or repelling the respective moving contact by means of a coil that may be supplied with a reference potential.
As shown in detail in fig. 4, the support body 100 may have a shape by which the terminals 112 may be arranged on the surface 302 or another surface 302 'parallel to the surface 302 at the distance a or protrude from the surface 302 or the other surface 302'.
In addition, the support body 100 may have a shape such that the terminal 110 may be disposed on the surface 301 or another surface 301' parallel to the surface 301' at the distance B or protrude from the surface 301 or another surface 301 '.
As shown in detail in fig. 4, the support body 100 may also have C-bevels on one or more corners of the support body.
As shown in detail in fig. 2, the fixed contacts 158,.. 158' "may include a plurality of reinforcing contacts F1,.., F4 and C1,.., C4, and the variable position contacts M1,.., M4 may also include a plurality of reinforcing contacts T1,.., T4, so that the contact area between the variable position contacts and the respective fixed contacts may ensure a predetermined value of current through these contacts.
In addition, as shown by way of example in fig. 2, all fixed contacts 158,.. and 158' "and all movable contacts M1,.., and M4 may be arranged in a region of the integrated electromechanical device 1 between two parallel planes x3 and x 4.
Various aspects and embodiments of an integrated electromechanical device according to the present invention have been described. It will be appreciated that each embodiment may be combined with any other embodiment.
Naturally, without altering the principle of the invention, the embodiments and the construction details may be varied widely with respect to those described and illustrated purely by way of non-limiting example, without thereby departing from the scope of the invention as defined in the appended claims.
Claims (11)
1. An integrated electromechanical device (1), the integrated electromechanical device (1) comprising:
-a support body (100) comprising a plurality of side faces (301., 306), a first fixed contact (158), a first variable position contact (M1), a second variable position contact (M2), a first control circuit (138) arranged to control the first variable position contact (M1), and a second control circuit (138') arranged to control the second variable position contact (M2); the first variable position contact (M1) and the second variable position contact (M2) are electrically connected to each other via the first fixed contact (158) in a predetermined conduction state, and are not electrically connected to each other in a predetermined isolation state; controlling, by the first control circuit (138) and/or the second control circuit (138'), a transition from the conducting state to the isolating state and vice versa;
-at least one first conductive terminal (110) and at least one second conductive terminal (112), said at least one first conductive terminal (110) and at least one second conductive terminal (112) being arranged on at least one side (301,.., 306) of the support body (100) or protruding from at least one side (301,.., 306) of the support body (100); the at least one first conductive terminal (110) and the at least one second conductive terminal (112) each comprise a respective connection end region (100A,112A) distal to the support body (100), the connection end regions (100A,112A) lying respectively one on a first connection plane (x1) and the other on a second connection plane (x2) different from and parallel to the first connection plane (x 1);
At least one of the first conductive terminal (110) and the at least one second conductive terminal (112) is a terminal connected to the first variable position contact (M1) or the second variable position contact (M2), or
At least one of the at least one first conductive terminal (110) and the at least one second conductive terminal (112) is a terminal of the first control circuit (138) or the second control circuit (138').
2. The integrated electromechanical device (1) according to claim 1, wherein
The at least one first conductive terminal (110) and the at least one second conductive terminal (112) are arranged to be connected, respectively, one directly to the first circuit board (201) and the other directly to the second circuit board (202) or to a respective connector or cable; or
The at least one first conductive terminal (110) and the at least one second conductive terminal (112) are arranged one connected to a first region (a1) of a flexible circuit board (203) and the other connected to a second region (a2) of the same flexible circuit board (203), respectively.
3. The integrated electromechanical device (1) according to claim 1 or 2, wherein said first connection plane (x1) is arranged at a distance (d1) from said support (100) according to a first direction (v1) and said second connection plane (x2) is arranged at a distance (d2) from said support (100) according to a second direction (v2) opposite to said direction (v 1).
4. The integrated electromechanical device (1) according to any of the preceding claims, wherein said at least one first conductive terminal (110) and said at least one second conductive terminal (112) are respectively provided on two sides (302,301) of said support body opposite to each other or protrude from said two sides (302,301).
5. The integrated electromechanical device (1) according to any one of the preceding claims, the integrated electromechanical device (1) comprising a plurality of first conductive terminals (110) and/or second conductive terminals (112).
6. The integrated electromechanical device (1) according to any one of the preceding claims, the integrated electromechanical device (1) comprising a second fixed contact (158'), a third variable position contact (M3) and a fourth variable position contact (M4), a third control circuit (138 ") arranged to control the third variable position contact (M3) and a fourth control circuit (138"') arranged to control the fourth variable position contact (M4);
The second fixed contact (158') is arranged such that the third variable position contact (M3) and the fourth variable position contact (M4) are electrically connected to each other via the second fixed contact (158') in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state;
The transition from the conducting state to the isolating state and vice versa is controlled by the third control circuit (138 ") and/or the fourth control circuit (138"').
7. The integrated electromechanical device (1) according to claim 6, the integrated electromechanical device (1) comprising:
-a third fixed contact (158 ") and a fourth fixed contact (158"');
The third fixed contact (158 ") is arranged such that the first variable position contact (M1) and the third variable position contact (M3) are electrically connected to each other via the third fixed contact (158") in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state;
Controlling a transition from the conducting state to the isolating state, and vice versa, by the first control circuit (138) and/or by the third control circuit (138 "); and is
The fourth fixed contact (158 "') is provided such that the second variable position contact (M2) and the fourth variable position contact (M4) are electrically connected to each other through the fourth fixed contact (158"') in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state; the transition from the conducting state to the isolating state and vice versa is controlled by the second control circuit (138') and/or by the fourth control circuit (138 "').
8. The integrated electromechanical device (1) according to claim 7, wherein the third and fourth fixed contacts (158 ") and (158"') further allow:
-the second variable position contact (M2) and the third variable position contact (M3) are electrically connected to each other via the third fixed contact (158 ") in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state; controlling a transition from the conducting state to the isolating state, and vice versa, by the second control circuit (138') and/or the third control circuit (138');
-the first variable position contact (M1) and the fourth variable position contact (M4) are electrically connected to each other by means of the fourth fixed contact (158 "') in a predetermined conduction state and are not electrically connected to each other in a predetermined isolation state; the transition from the conducting state to the isolating state and vice versa is controlled by the first control circuit (138) and/or by the fourth control circuit (138 "').
9. The integrated electromechanical device (1) according to claim 8, wherein the third fixed contact (158 ") and the fourth fixed contact (158"') substantially form an x-shape or are substantially parallel.
10. The integrated electromechanical device (1) according to any of the preceding claims, wherein the support body (100) comprises at least one protrusion (350), the at least one protrusion (350) being intended to be used as a centering element to align the at least one circuit board (201,202) with the electromechanical device (1) or to ensure a minimum distance (d) between the support body (100) and at least one circuit board (201, 202).
11. The integrated electromechanical device (1) according to any one of the preceding claims, wherein each control circuit (138.., 138 "') comprises a coil.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102017000088417 | 2017-08-01 | ||
| IT102017000088417A IT201700088417A1 (en) | 2017-08-01 | 2017-08-01 | Integrated electromechanical device. |
| PCT/IB2018/055702 WO2019025952A1 (en) | 2017-08-01 | 2018-07-31 | Integrated electromechanical device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111448636A true CN111448636A (en) | 2020-07-24 |
| CN111448636B CN111448636B (en) | 2022-03-15 |
Family
ID=61005957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880061967.7A Active CN111448636B (en) | 2017-08-01 | 2018-07-31 | Integrated electromechanical device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3662496B1 (en) |
| CN (1) | CN111448636B (en) |
| IT (1) | IT201700088417A1 (en) |
| WO (1) | WO2019025952A1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531890A1 (en) * | 1991-09-13 | 1993-03-17 | Eaton Corporation | Switching relay |
| HK126796A (en) * | 1992-11-12 | 1996-07-26 | Hosiden Corp | Control switch |
| US6510222B1 (en) * | 1997-07-25 | 2003-01-21 | Alcatel | Miniature connector array |
| EP1612820A2 (en) * | 2004-06-30 | 2006-01-04 | Eja Limited | Improvements in or relating to switch contacts |
| US20080106360A1 (en) * | 2005-01-10 | 2008-05-08 | Schneider Electric Industries Sas | Microsystem With Electromagnetic Control |
| CN201352619Y (en) * | 2009-01-16 | 2009-11-25 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN201898050U (en) * | 2008-12-16 | 2011-07-13 | Abb公司 | Electrical switch apparatus for low-voltage circuit |
| US20130087438A1 (en) * | 2011-10-10 | 2013-04-11 | Schneider Electric Industries Sas | Conversion Device for Converting a Mechanical Position Into an Electric State |
| FR3014595A1 (en) * | 2013-12-09 | 2015-06-12 | Schneider Electric Ind Sas | ELECTRICAL SWITCHING DEVICE |
| CN206179783U (en) * | 2016-11-24 | 2017-05-17 | 上海华欣民福自控设备有限公司 | Multicircuit relay board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3808566A (en) * | 1973-05-24 | 1974-04-30 | Gen Dynamics Corp | Switching system |
-
2017
- 2017-08-01 IT IT102017000088417A patent/IT201700088417A1/en unknown
-
2018
- 2018-07-31 WO PCT/IB2018/055702 patent/WO2019025952A1/en unknown
- 2018-07-31 EP EP18759404.9A patent/EP3662496B1/en active Active
- 2018-07-31 CN CN201880061967.7A patent/CN111448636B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531890A1 (en) * | 1991-09-13 | 1993-03-17 | Eaton Corporation | Switching relay |
| HK126796A (en) * | 1992-11-12 | 1996-07-26 | Hosiden Corp | Control switch |
| US6510222B1 (en) * | 1997-07-25 | 2003-01-21 | Alcatel | Miniature connector array |
| EP1612820A2 (en) * | 2004-06-30 | 2006-01-04 | Eja Limited | Improvements in or relating to switch contacts |
| US20080106360A1 (en) * | 2005-01-10 | 2008-05-08 | Schneider Electric Industries Sas | Microsystem With Electromagnetic Control |
| CN201898050U (en) * | 2008-12-16 | 2011-07-13 | Abb公司 | Electrical switch apparatus for low-voltage circuit |
| CN201352619Y (en) * | 2009-01-16 | 2009-11-25 | 番禺得意精密电子工业有限公司 | Electric connector |
| US20130087438A1 (en) * | 2011-10-10 | 2013-04-11 | Schneider Electric Industries Sas | Conversion Device for Converting a Mechanical Position Into an Electric State |
| FR3014595A1 (en) * | 2013-12-09 | 2015-06-12 | Schneider Electric Ind Sas | ELECTRICAL SWITCHING DEVICE |
| CN206179783U (en) * | 2016-11-24 | 2017-05-17 | 上海华欣民福自控设备有限公司 | Multicircuit relay board |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3662496A1 (en) | 2020-06-10 |
| IT201700088417A1 (en) | 2019-02-01 |
| WO2019025952A1 (en) | 2019-02-07 |
| CN111448636B (en) | 2022-03-15 |
| EP3662496B1 (en) | 2021-05-26 |
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