CN110176686B - Electric connector with safety interlocking - Google Patents
Electric connector with safety interlocking Download PDFInfo
- Publication number
- CN110176686B CN110176686B CN201910607189.3A CN201910607189A CN110176686B CN 110176686 B CN110176686 B CN 110176686B CN 201910607189 A CN201910607189 A CN 201910607189A CN 110176686 B CN110176686 B CN 110176686B
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- Prior art keywords
- socket
- plug
- locking
- pin
- insulating
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- 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.)
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- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000005520 electrodynamics Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7035—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part comprising a separated limit switch
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides an electric connector with a safety interlock, which comprises a socket and a plug, wherein the electric connector is provided with a primary locking mechanism and a secondary locking mechanism, and the primary locking mechanism provides primary locking through the cooperation of a stop pin on the plug and a primary locking groove on the socket; the secondary locking mechanism triggers the secondary locking shaft on the socket to be matched with the secondary locking groove on the plug through the protection control module so as to realize automatic secondary locking of the main circuit electrification state judgment of the electric connector. The primary locking can enable the plug and the socket of the connector to eliminate axial gaps caused by accumulated tolerance when being plugged in place, ensure effective contact of the pin jack, can prevent field misoperation preliminarily, and improves the safety of products. The secondary lock ensures that the connector cannot be pulled out in the live state. The locking combination effectively ensures that the connector cannot be plugged or separated in a live state, completely avoids the possibility of accidents caused by misoperation, and is a high-current safety connector with the interlocking function of electrical equipment.
Description
Technical Field
The invention relates to the field of electric connectors, in particular to a high-current electric connector with safety interlocking.
Background
The power failure caused by the damage of the power equipment brings great inconvenience and influence to users, and safety accidents can be caused when the power equipment is seriously damaged. The traditional line is changed and connected the operation time overlength, and emergency power source can't insert fast, leads to the user to supply power can't resume in fairly long time, influences normal life and production. In order to shorten the access time of an emergency power supply when a permanent power supply fails due to a major disaster, strengthen important places and important user protection power supply, improve the quality of power supply reliability and high-quality service level, a high-current emergency power supply connector with reliable and rapid electric connection, safe electric interlocking and strong outdoor environment tolerance is urgently needed.
The emergency power supply quick access electric connector generally requires hundreds of amperes of current and near kilovolts of working voltage, and needs to be in operation connection in outdoor occasions, so that operation safety is an extremely important factor. However, the current market connector omits part of important safety functions when the connector is used as a power system in the design and the structure thereof, active and forced safety measures cannot be realized according to the live line condition, and the connector can be plugged in and pulled out in a live state due to misoperation, so that arcing, short circuit and personal safety accidents occur. The invention provides a high-current connector with safety interlocking, which meets the safety specification of electrical equipment and can effectively avoid the occurrence of the faults.
Disclosure of Invention
The invention aims to provide an electric connector with a safety interlock, which can prevent safety accidents caused by live misplug of the electric connector.
In order to achieve the above purpose, the invention adopts the following technical scheme:
An electric connector with safety interlocking comprises a socket and a plug, wherein the socket comprises an insulating outer shell and a jack component arranged in the insulating outer shell; the plug comprises an insulating outer shell and a pin component arranged in the insulating outer shell; the electrical connector is provided with a primary locking mechanism and a secondary locking mechanism, the primary locking mechanism comprising: a primary locking groove arranged at the front part of the jack part and a stop pin arranged on the pin part, wherein primary locking is provided by the cooperation of the stop pin and the primary locking groove; the secondary locking mechanism includes: a protection control module and a position switch module fixedly mounted on the insulating housing of the socket; the micro-motion position switch module and the protection control module are provided with a position switch shaft and a secondary locking shaft, and a secondary stop groove matched with the secondary locking shaft is formed in an insulating shell of the plug. When the plug is matched with the socket, an electric signal is transmitted through the micro-position switch to allow an external power supply to supply power to the jack component and/or the pin component, and then the protection control module triggers the secondary locking shaft to be matched with the secondary locking groove in the electrified state of the jack component, so that automatic secondary locking of the main circuit electrified state judgment of the electric connector is realized. When the plug is inserted into the socket along the indication direction, the plug is pressed down along the insertion direction, rotated by a given angle and released to reach the locking position, the stop pin of the pin in the plug enters the primary locking groove of the jack part to realize primary locking; at the moment, if the plug needs to be pulled out, the plug needs to be pushed in the inserting direction and reversely rotated for a given angle to complete primary locking and unlocking, and then the plug can be pulled out. The primary lock can enable the plug and the socket of the connector to eliminate axial gaps caused by accumulated tolerance when being plugged in place, ensure effective contact of the pin jack, effectively offset electromotive force when short-circuit current occurs, avoid damage of the connector, and can primarily prevent field misoperation, and improve safety of products. The secondary locking can enable the plug to translate along the inserting direction and/or rotate by a set angle along the axial direction when the plug is in the inserting locking position and is electrified, so that the secondary locking is realized, the connector cannot enter the primary locking unlocking, and the connector cannot be pulled out in the electrified state.
The electrical connector is further improved in that the receptacle further includes a locking spring and a retainer ring disposed between the dielectric housing and the receptacle member to provide a locking pressure to the mating locking position of the retaining pin and the primary locking groove.
The primary locking groove is arranged along the inner circumference of the jack, is provided with an unlocking hole and a locking hole, and is a groove shape which is opened to the front end part of the jack; the stop pin is arranged radially outwards along the contact pin; when the plug is inserted into the socket, the stop pin of the plug is positioned in the unlocking hole direction, and after the contact pin part of the plug and the jack part of the socket realize enough safe insertion depth along the insertion direction, the plug is rotated for a certain angle, and the stop pin moves to the locking hole along the primary locking groove and is clamped in the locking hole to realize primary locking.
The primary locking structure avoids the relative movement of the plug and the socket under the adverse conditions of vibration, electrodynamic force, cable dragging and the like, and improves the contact reliability and safety.
The micro-motion position switch of the secondary locking mechanism is provided with a position switch shaft, and the protection module of the secondary locking mechanism is provided with a secondary locking shaft; the position switch and the protection module are connected to an external control loop through an electric circuit; the position switch shaft and the secondary locking shaft are arranged along the circumferential direction of the socket and are inserted into corresponding through holes formed in the insulating shell of the socket; when the plug is inserted into the socket and reaches a safe electric connection position, the front end of the plug insulation shell body pushes the position switch shaft to move along the axis of the position switch shaft and trigger the position switch, so that the control circuit connector is informed of being in a state that the connection can give power to the main terminal; when the plug is not inserted into the socket to the safe connection position, the position switch shaft falls down, and the position switch informs the external control circuit that the connector is in the unsafe connection state and can not energize the main terminal. The protection module confirms that the jack component and/or the contact pin component can trigger the secondary locking shaft to fall down and insert into the secondary locking groove when being electrified according to an external electrical signal, so that automatic secondary locking for judging the electrified state of the main loop is realized, and accidents such as electric arc and the like caused by separation of the connector in the electrified state are prevented. The locking combination effectively ensures that the connector cannot be plugged or separated in a live state, completely avoids the possibility of accidents caused by misoperation, and is a first-time heavy-current safety connector with the interlocking function of electrical equipment.
The electric connector is further improved in that the front end part of the socket jack is provided with an insulating part and is combined with the insulating part arranged in the hollow part of the jack, and the parts of fingers and tools, which are prevented from contacting the live conductor of the socket jack, are jointly realized through the limitation of the circumferential and axial dimensions, so that the safety performance of the product is further improved. Preferably, the insulating member provided in the hollow portion of the insertion hole is composed of a metal rod and an insulating cap, and the metal rod is rigidly connected to the inside of the insertion hole.
Drawings
FIG. 1 is a schematic cross-sectional view of an electrical connector in a mated position;
FIG. 2 is a schematic cross-sectional view of an electrical connector receptacle;
FIG. 3 is a schematic cross-sectional view of an electrical connector plug;
Fig. 4 is a schematic view of the structure of the primary locking groove of the electrical connector socket.
The present invention is further described below with reference to the accompanying drawings, which are only illustrative, not restrictive, and the scope of the invention is not limited to the embodiments, but various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and the modifications and improvements fall within the scope of the invention as defined in the appended claims.
Detailed Description
The invention relates to an electric connector with a safety interlock, which can effectively prevent the electrified misplug and misplug operation of the electric connector and mainly comprises a plug and a socket.
Referring to fig. 1-4, an electrical connector with safety interlock comprises a socket 31 and a plug 32, wherein the socket 31 comprises an insulating outer shell 1 and a jack part 2 arranged in the insulating outer shell, and a reed groove is arranged in the middle of the jack part 2 for installing an elastic conductive contact; the plug 32 comprises an insulating outer shell 13 and a pin component 14 clamped in the insulating outer shell through a fixed clamping ring 15. The electrical connection is achieved by the opposite insertion of the pins and the jacks.
The electrical connector is provided with a primary locking mechanism comprising: a primary locking groove 3 provided at the front of the jack part 2 of the socket 31 and a stopper pin 17 mounted on the pin 14 of the plug 32. The primary locking groove 3 is arranged along the inner circumference of the jack, the primary locking groove 3 is provided with an unlocking hole 3.1 and a locking hole 3.2, and the unlocking hole 3.1 is a groove type opening towards the front end of the jack. The stop pin 17 is disposed radially outwardly of the pin 14. The socket 31 further comprises a locking spring 9 and a retainer ring 10 arranged between the insulating housing 1 and the socket member 2. When the plug 32 is inserted into the socket 31, the stop pin 17 of the plug is positioned in the direction of the unlocking hole 3.1, after the pin part 14 of the plug 32 is in a sufficient safe insertion depth with the jack part 2 of the socket 32 along the insertion direction, the front end of the insulating shell 13 of the plug 32 is contacted with the retainer ring 10 of the socket 31 and presses down the locking spring 9, at the moment, the plug is rotated by a given angle, the stop pin 17 arranged on the pin part 14 of the plug 32 moves to the locking hole 3.2 along the primary locking groove 3 of the jack part 2, and after the insertion force is released, the stop pin is clamped in the locking hole 3.2 and reaches the locking position by the locking pressure of the locking spring 9 and the retainer ring 10, so that primary locking is realized. The jack part 2 and the contact pin part 14 which are locked at one stage realize limit in the circumferential movement and the pulling-out direction, so that the relative movement of the plug and the socket under the adverse conditions of vibration, electrodynamic force, cable dragging and the like is avoided, and the contact reliability and safety are improved. When the plug is required to be pulled out to disconnect, the plug 32 is pushed in the insertion direction first, so that the stop pin 17 on the pin component 14 is separated from the locking hole 3.2 of the jack component 2, and the pin is reversely rotated by a given angle along the primary locking groove 3 to achieve unlocking of the primary locking hole 3.1, and then the plug 32 can be pulled out from the socket 31. The primary lock can enable the plug and the socket of the connector to eliminate axial gaps caused by accumulated tolerance when the plug and the socket are plugged in place, ensure effective contact of the pin and the socket, particularly can effectively counteract electrodynamic force to avoid damage of the connector when short-circuit current is encountered, can primarily prevent field misoperation, and improves the safety of products.
The electrical connector is also provided with a secondary locking mechanism comprising: the micro-motion position switch 5 and the protection control module 7 are arranged on the insulating shell 1 of the socket 31, and the micro-motion position switch 5 and the protection control module 7 are fixed on the mounting platform 20 of the insulating shell 1. The position switch 5 is provided with a position switch shaft 6, and the protection control module 7 is provided with a secondary locking shaft 8. The position switch shaft 6 and the secondary locking shaft 8 are arranged along the circumferential direction of the socket and inserted into corresponding through holes arranged on the insulating housing 1. The insulating housing 13 of the plug 32 is provided with a secondary stop groove 16 for mating with the secondary locking shaft 8 for providing a secondary lock of the connector. When the plug 32 is inserted into the socket 31 and reaches the safe electric connection position, the front end of the plug insulation outer shell 13 pushes the position switch shaft 6 of the position switch 5 mounted on the socket, so that the position switch shaft 6 moves along the axis of the position switch shaft and triggers the position switch 5, thereby informing a control loop of external switch equipment through an electric signal and allowing the external switch equipment to supply power to the jack component 2 and/or the pin component 14; when the external switch equipment supplies power to the jack component 2 and/or the pin component 14, the protection module 7 arranged on the socket insulating shell 1 can sense the power supply state through an external control loop, a current sensor and the like, trigger the secondary locking shaft 8 of the control module 7 to move downwards and insert into the secondary locking groove 16 on the plug insulating shell 13, and at the moment, the plug cannot translate along the inserting direction or cannot rotate for a set angle along the axial direction so as to realize secondary locking; since the necessary axial and radial relative movement cannot occur between the connector plug 32 and the socket 31 in the secondary locking state, the primary locking state of the jack part 2 and the pin part 1 is ensured not to be unlocked, and the connector is ensured not to be pulled out in the electrified state. If the plug 32 is not inserted into the socket 31 yet, the position switch shaft 6 of the position switch 5 arranged on the socket insulating housing 1 is in a falling state, the position switch is disconnected, so that the control loop of the external switch device is informed through an electric signal that the power supply to the jack component 2 is not allowed, the plug 32 is ensured not to be inserted into the electrified socket 31, the automatic secondary locking of the main loop electrified state judgment is realized, and further, the short circuit and the personal safety accident are avoided; when the jack part 2 is not electrified, the secondary locking shaft of the protection control module 7 is unlocked, allowing the plug 32 to be inserted into the socket 31. The scheme effectively ensures that the connector cannot be plugged or separated in an electrified state when in various positions, completely avoids the possibility of accidents caused by misoperation, and is a first-time large-current safety connector with an electric safety interlocking function.
The front end portion of the socket part 2 of the socket 31 is provided with the insulating part 21 and combined with the insulating part 4 provided in the hollow portion of the socket, and the combined position is such that the distance between the outer circumference of the insulating part 4 and the inner circumference of the insulating part 21 can only pass through the relevant part of the plug, but the part of the tool with a diameter larger than the finger and a given diameter (IP 2X) contacting the live conductor of the socket part 2 is restricted, further improving the safety performance of the product. Preferably, the insulating member provided in the hollow portion of the insertion hole is composed of a metal rod and an insulating cap, and the metal rod is rigidly connected to the inside of the insertion hole.
Claims (7)
1. An electrical connector with safety interlock comprising a socket (31) and a plug (32), the socket (31) comprising a first insulating outer housing (1), a jack part (2) provided in the first insulating outer housing; the plug (32) comprises a second insulating outer shell (13) and a pin component (14) arranged in the second insulating outer shell (13); the method is characterized in that: the electrical connector is provided with a primary locking mechanism and a secondary locking mechanism, the primary locking mechanism comprising: a primary locking groove (3) provided at the front of the jack part (2) and a stopper pin (17) mounted on the pin part (14), primary locking being provided by cooperation of the stopper pin (17) and the primary locking groove (3); the secondary locking mechanism includes: a micro-position switch (5) and a protection control module (7) fixedly mounted on a first insulating outer shell (1) of the socket (31); the protection control module (7) is provided with a secondary locking shaft (8), a secondary locking groove (16) matched with the secondary locking shaft (8) is formed in a second insulating outer shell (13) of the plug (32), when the plug is matched with the socket, an electric signal is transmitted through the micro-motion position switch (5) to supply power to the jack component (2) and/or the pin component (14), and then the secondary locking shaft (8) is triggered by the protection control module (7) to be matched with the secondary locking groove (16) so as to realize automatic secondary locking of the main circuit electrification state judgment of the electric connector.
2. The electrical connector according to claim 1, wherein the socket (31) further comprises a locking spring (9) and a retainer ring (10) arranged between the first insulating outer housing (1) and the socket part (2) to provide a locking pressure for the mating locking position of the retaining pin (17) and the primary locking groove (3).
3. The electrical connector according to claim 2, wherein the primary locking groove (3) is provided along an inner circumference of the jack member (2), the primary locking groove (3) being provided with an unlocking hole (3.1) and a locking hole (3.2), the unlocking hole (3.1) being of a groove shape opening toward a jack front end portion; the stop pin (17) is disposed radially outwardly of the pin member (14); when the plug (32) is inserted into the socket (31), the stop pin (17) of the plug is positioned in the direction of the unlocking hole (3.1), and after the pin part (14) of the plug (32) and the jack part (2) of the socket (31) realize enough safe insertion depth along the insertion direction, the plug (32) is rotated for a certain angle, and the stop pin (17) moves to the locking hole (3.2) along the primary locking groove (3) and is clamped in the locking hole (3.2) to realize primary locking.
4. The electrical connector according to claim 1, wherein the micro-position switch (5) is provided with a position switch shaft (6); the position switch shaft (6) is arranged along the circumferential direction of the socket (31) and is inserted into a corresponding through hole arranged on the first insulating outer shell (1) of the socket (31); when the plug (32) is inserted into the socket (31) and reaches a safe electric connection position, the front end of the second insulating outer shell (13) of the plug is pushed and installed on the position switch shaft (6), so that the switch shaft (6) moves along the axis of the switch shaft and triggers the micro-position switch (5) to allow an external circuit to supply power to the socket component (2) and/or the pin component (14).
5. Electrical connector according to claim 1, wherein the secondary locking shaft (8) is arranged along the circumference of the socket (31) and is inserted into a corresponding through hole provided in the first insulating outer housing (1) of the socket (31); when the plug (32) is inserted into the socket (31) and reaches a safe electric connection position and is electrified, the protection control module (7) triggers the secondary locking shaft (8) to be matched with the secondary stop groove (16) so as to realize automatic secondary locking of the main circuit electrified state judgment of the electric connector.
6. Electrical connector according to any of claims 1-5, characterized in that the front end of the socket part (2) of the socket (31) is provided with a first insulating part (21) and is combined with a second insulating part (4) provided in the hollow part of the socket part (2), the combined position being such that the distance between the outer circumference of the second insulating part (4) and the inner circumference of the first insulating part (21) can only pass through the relevant part of the plug.
7. An electrical connector according to claim 6, characterized in that the second insulating member (4) provided in the hollow part of the socket member (2) is constituted by a metal rod rigidly connected in the socket member (2) and an insulating cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607189.3A CN110176686B (en) | 2019-07-07 | 2019-07-07 | Electric connector with safety interlocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607189.3A CN110176686B (en) | 2019-07-07 | 2019-07-07 | Electric connector with safety interlocking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110176686A CN110176686A (en) | 2019-08-27 |
| CN110176686B true CN110176686B (en) | 2024-09-06 |
Family
ID=67699845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910607189.3A Active CN110176686B (en) | 2019-07-07 | 2019-07-07 | Electric connector with safety interlocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110176686B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243379B (en) * | 2021-12-10 | 2023-05-26 | 南京康尼科技实业有限公司 | Electric connector with mechanical interlocking |
| CN115663500B (en) * | 2022-11-16 | 2023-04-07 | 挚行电子(苏州)有限公司 | Board end socket connector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209822942U (en) * | 2019-07-07 | 2019-12-20 | 上海挚行电子科技有限公司 | Electric connector with safety interlock |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5624271A (en) * | 1994-10-26 | 1997-04-29 | United Technologies Automotive, Inc. | Connector latch interlock plate |
| DE20106746U1 (en) * | 2001-04-19 | 2002-08-29 | Robert Bosch Gmbh, 70469 Stuttgart | Wiring harness connector with compact locking element in a shake-proof and waterproof version |
| CN101291026B (en) * | 2007-04-20 | 2011-10-05 | 贵州航天电器股份有限公司 | Pin-type load-off alarming device |
| CN102136656B (en) * | 2011-01-19 | 2013-06-12 | 苏州工业园区丰年科技有限公司 | Connector female and male self-locking device |
| CN103050840B (en) * | 2012-12-26 | 2015-09-23 | 中航光电科技股份有限公司 | A kind of anti-electric coupler component explained plug by oneself and use this plug |
| CN107681361B (en) * | 2017-08-18 | 2023-07-21 | 浙江永贵电器股份有限公司 | Quick locking mechanism of electric connector |
-
2019
- 2019-07-07 CN CN201910607189.3A patent/CN110176686B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209822942U (en) * | 2019-07-07 | 2019-12-20 | 上海挚行电子科技有限公司 | Electric connector with safety interlock |
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| Publication number | Publication date |
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| CN110176686A (en) | 2019-08-27 |
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