EP3857652A1 - Dispositif de sécurité et adaptateur de voyage - Google Patents

Dispositif de sécurité et adaptateur de voyage

Info

Publication number
EP3857652A1
EP3857652A1 EP19783130.8A EP19783130A EP3857652A1 EP 3857652 A1 EP3857652 A1 EP 3857652A1 EP 19783130 A EP19783130 A EP 19783130A EP 3857652 A1 EP3857652 A1 EP 3857652A1
Authority
EP
European Patent Office
Prior art keywords
thermal fuse
fuse
slot
circuit
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19783130.8A
Other languages
German (de)
English (en)
Inventor
Christoph Hutter
Heiko HUTTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WORLDCONNECT AG
Original Assignee
Worldconnect AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Worldconnect AG filed Critical Worldconnect AG
Publication of EP3857652A1 publication Critical patent/EP3857652A1/fr
Pending legal-status Critical Current

Links

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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
    • 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
    • H01R13/68—Structural association with built-in electrical component with built-in fuse
    • H01R13/684—Structural association with built-in electrical component with built-in fuse the fuse being removable
    • H01R13/688—Structural association with built-in electrical component with built-in fuse the fuse being removable with housing part adapted for accessing the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • 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
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection

Definitions

  • the invention relates to a securing device for securing an electrical circuit and a travel adapter with a securing device for securing an electrical circuit.
  • travel adapters are devices in which plugs for at least one first standard can be inserted and the travel adapter itself can be plugged into a socket of a standard different from the plug of the first standard.
  • the travel adapters typically have a socket side for inserting the plug and a plug side for inserting the travel adapter into a socket.
  • the socket side there are openings for plug pins of a plug.
  • the plug side has corresponding plug pins for plugging into a socket.
  • an electrical circuit is formed between the openings and the connector pins.
  • EP 0 61 6 389 A2 shows a travel adapter in which the openings are connected directly to the plug pins. In other words, there is a closed circuit between the openings and the connector pins.
  • plug pins are provided on the plug side of the travel adapter in order to enable the travel adapter to be used with several sockets of different standards.
  • Such travel adapters have become known, for example, with WO 2009/1 52630 A1 and with WO 2009/1 52629 A1.
  • These two pamphlets disclose travel adapters with several plug pins of different standards, the respective plug pins of a standard being able to be pushed out of the housing of the travel adapter together. It is easily seen that the circuit between the openings on the socket side and the respective connector pins on the connector side only closes when the respective connector pins are in a suitable end position. In an inactive state of the travel adapter, the circuit here is open and only closed when the travel adapter is in an active state.
  • a travel adapter is also known from WO 02/063722 A2, which has displaceably arranged plug pins.
  • the travel adapter of WO 02/063722 A2 also has a fuse to protect the circuit against overcurrent.
  • US 9,843, 145 B2 discloses a connector with a thermal fuse device.
  • the thermal fuse device comprises a thermal fuse that connects a lead to the connector and a first contact pin in the connector using a bimetal strip.
  • the thermal fuse device includes a fuse which is arranged serially between the thermal fuse and the first contact pin of the plug, the fuse being firmly connected to the first contact pin and the thermal fuse in the plug.
  • a disadvantage of this solution is that the melting fuse forms a connecting line between the first contact pin and the thermal fuse and is arranged there firmly in the plug.
  • the object of the present invention is therefore to overcome one or more parts of the prior art.
  • a fuse device and / or a travel adapter with a corresponding fuse device should be made available, which makes it possible to protect an electrical circuit from overheating.
  • a safety device for securing an electrical circuit, in particular an electrical circuit of a travel adapter, comprises a thermal fuse for interrupting the circuit at a specific temperature and a slot for receiving a suitable circuit breaker for a specific current in the circuit, Fuse.
  • the thermal fuse and the slot are connected in series in the circuit, the slot and the thermal fuse being arranged adjacent.
  • thermal protection means a fuse that switches at a certain temperature.
  • a bimetal switch that bends at a certain temperature and breaks a circuit accordingly is an example of a thermal fuse.
  • a slot for a fuse in series with a thermal fuse makes it possible, on the one hand, to protect the circuit against overcurrent when the circuit is closed, and on the other hand to prevent excessive temperature in the circuit.
  • a circuit is loaded close to its maximum permitted current, it heats up. If this happens over a long period of time, there is a risk that the circuit heats up above permissible temperatures. This can be prevented by the series connection / series connection as proposed. If the temperature of the circuit rises to the nominal temperature of the thermal fuse, for example 60 °, the thermal fuse reacts and breaks the circuit.
  • the thermal fuse Due to the adjacent arrangement of the slot and thermal fuse, the heat radiated by the heating of the fuse, which is arranged in the slot according to the invention, has a direct influence on the thermal fuse.
  • the thermal fuse thus monitors the temperature development of a fuse arranged at the slot, so that a faster or improved monitoring of the temperature development in the fuse device can be provided and overheating of the circuit can be prevented. This makes it possible to interrupt the circuit before it reaches a critical temperature.
  • the fuse in the circuit heats up faster than the other components of the circuit.
  • the temperature development of the fuse is leading in relation to the temperature development of the circuit.
  • a thermal fuse dimensioned at 120 ° C is suitable for monitoring a fuse with a dimension of 10 amperes.
  • a slot is understood here as a device in which a fuse can be received and holds it exchangeably.
  • the fuse can be detachably or separably arranged in the slot.
  • the slot may have a first contact clip and a second contact clip, which hold the fuse securely at a first contact and a second contact, and thereby the first contact clip is electrically connected to the second contact clip. This provides an overcurrent protection that is easy to maintain and thus reduces service costs.
  • the thermal fuse can be reset.
  • a resettable thermal fuse enables the circuit to be used several times. It can be provided that the thermal fuse is designed with an automatic reset.
  • the automatic reset makes it possible for the circuit to close again as soon as the temperature of the circuit is within the permissible range.
  • the thermal fuse is designed with a manual reset.
  • the securing device is preferably designed such that the slot and the thermal fuse are arranged essentially in parallel adjacent to one another.
  • I m essentially parallel includes both completely parallel training and training with an angular deviation from parallelism of up to 10 °.
  • the parallel arrangement of the thermal fuse to the slot of a melting fuse enables the heat radiation to act directly and directly on the thermal fuse. This enables improved thermal monitoring of the fuse with the thermal fuse.
  • the slot and the thermal fuse are preferably arranged in a common housing.
  • It can be a housing, for example, a higher-level construction group, such as the housing of a travel adapter. But it is also conceivable that a second, preferably separate, housing is located within this superordinate housing, in which the slot and the thermal fuse are arranged. As a result, the influence of the heat radiation from the fuse which is in the slot in the use according to the invention is increased on the thermal fuse.
  • the common housing in which both the slot and the thermal fuse are arranged, is sealed off from the environment.
  • the switching curve of the safety device can in other words be adapted or influenced accordingly, the triggering curve of the safety device.
  • the gem lonely housing in particular the housing designed as a second housing, advantageously has a partition, the slot being arranged on a first side of the partition and the thermal fuse being arranged on a second side of the partition.
  • the partition wall enables the fuse to be physically separated from the thermal fuse and still be arranged sufficiently close together so that the heat development on the fuse acts directly on the thermal fuse.
  • the partition wall advantageously has a partition wall thickness, as a result of which a spacing of the slot on the first side for thermal protection on the second side can be defined via the partition wall thickness, and a compact securing device is thus created.
  • the slot and the thermal fuse are advantageously arranged opposite one another on the partition, which means that the common housing is compact and therefore space-saving.
  • the partition divides the common, second housing advantageously into a first chamber and a second chamber.
  • the slot for a fuse is arranged in the first chamber and the thermal fuse is arranged in the second chamber.
  • the slot and the thermal fuse are therefore spatially separated from one another, so that, for example, destruction of the fuse in the slot in the first chamber cannot have a mechanical effect on the thermal fuse in the second chamber.
  • the gem lon e, second housing is advantageously separated from the Reiseadap ter in the travel adapter.
  • the common, second housing can then be removed from the travel adapter and, in the meantime, the fuse can simply be placed in the slot, for example clamped.
  • Another aspect of the present invention relates to a travel adapter comprising a security device as described herein. This enables the provision of a travel adapter, which is protected against both overcurrent and overheating and enables reliable operation of the travel adapter and / or devices connected to it.
  • the socket of the first standard at least has a first and a second contact socket.
  • the connector of the second standard has at least one first and one second contact pin.
  • One of the contact pins of the plug of the second standard is electrically connected or connectable to one another with one of the contact sockets of the socket of the first standard by means of the securing device.
  • the remaining contact pin and the remaining contact socket are also connected to one another via an electrical circuit.
  • Such an arrangement provides a two-pole travel adapter that can be used in several countries with different socket standards and enables safe operation.
  • the socket of the first standard has a third contact socket for an earth pin and the plug of the second standard has a third contact pin as earth pin.
  • the contact socket for the earth pin and the contact pin which is designed as an earth pin, can also be connected to one another via an electrical current circuit.
  • the travel adapter preferably includes a fuse. This provides a fully functional and ready-to-use travel adapter.
  • the plug is slidably or rotatably mounted on the travel adapter.
  • this enables the compact to be transported and, on the other hand, the circuit can be disconnected.
  • it can be seen to provide several plugs of different standards and to store them in particular in a displaceable or rotatable manner. Depending on the country in which the travel adapter is used, this enables a corresponding country-specific plug to be pushed out of the housing and the circuits contained in the travel adapter to be closed accordingly.
  • FIG. 2 The travel adapter of Figure 1 in a second perspective view
  • Fig. 3 is a schematic view of a safety device
  • Fig. 4 A detailed view of the safety device in a travel adapter.
  • FIG. 1 shows a travel adapter 200 in a perspective view.
  • the travel adapter 200 has a socket side 210 and a plug side 220.
  • On the connector side 220 several plugs of a first standard are easily seen.
  • the respective contact pins of the plugs of the first standard are each arranged behind associated openings within a housing 201 of the travel adapter 200.
  • the contact pins 221, 222, 223 of a standard in the present case referred to as the US standard.
  • FIG. 2 shows the travel adapter 200 from FIG. 1 in a perspective view.
  • the can side 21 0 is visible in FIG.
  • the socket side 21 0 also has a plurality of openings, the contact elements of which are arranged for receiving contact pins of a plug.
  • the openings together with the contact elements represent contact sockets.
  • only the contact sockets of a single standard are provided with reference numerals, in the present case the contact sockets 21 1, 21 2, and 21 3 of the Italian standard.
  • FIG. 3 shows a schematic view of a securing device 100.
  • the securing device 1 00 is shown schematically in a travel adapter 200.
  • the securing device 100 is in the present case arranged between a contact socket 21 1 and a contact pin 221.
  • the connection between the contact socket 21 1 and the contact pin 221 in the present case forms a circuit 40.
  • a thermal fuse 10 and a slot 20 for a fuse 21 are arranged within the circuit 40.
  • the slot 20 is arranged adjacent to the thermal fuse 1 0.
  • the radiation of the heat e from the fuse 21 in the direction of the thermal fuse 10 is shown by arrows.
  • FIG. 4 shows a detailed view from the side X of FIG. 1 of the securing device 1 00 in a travel adapter 200.
  • the housing 201 of the travel adapter 200 is shown transparently, such that the securing device 100 is visible within the housing 201.
  • the securing device 1 00 is located inside the housing 201 in a second housing 30, which means that in other words it represents a common lonely housing for the slot 20 and the thermal fuse 1 0.
  • the second housing 30 can be separated from the housing 201 and separated spatially.
  • the second Ge housing 30 has two chambers 34, 35, not specified, wherein a chamber 34 is formed as a slot 20 in which a fuse 21 is arranged. In parallel to the slot 20, the second chamber 35 extends, in which the thermal fuse 1 0 is arranged.
  • the second Kam mer 35 in which the thermal fuse 10 is arranged, is separated from the slot 20 by a partition 31, the slot 20 being arranged on a first side 32 of the partition 31 and the thermal fuse 10 on a second side 33 of the Partition 31 is arranged.
  • This arrangement makes it possible to physically separate the fuse 21 from the thermal fuse 1 0 and yet arrange it sufficiently close together so that the heat development on the fuse 21 acts directly on the thermal fuse 1 0.
  • the melting fuse 21 can be detachably or separably arranged at the slot 20.
  • the slot 20 has a first contact clamp 22 and a second contact clamp 23, which on the one hand hold the fuse 21 at a first contact 24 and a second contact 25 and thereby the first contact clamp 22 with the second contact clamp m he 23 can be connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

La présente invention concerne un dispositif de sécurité (100) pour sécuriser un circuit électrique. Le dispositif de sécurité comporte un disjoncteur thermique (10) pour couper le circuit électrique à une température définie, ainsi qu'un porte-fusible (20) pour recevoir un fusible (21) pour couper le circuit électrique à une intensité définie dans le circuit électrique. Le disjoncteur thermique (10) et le porte-fusible (20) sont montés en série dans le circuit électrique (40), le porte-fusible et le disjoncteur thermique étant disposés à proximité l'un de l'autre.
EP19783130.8A 2018-09-27 2019-09-25 Dispositif de sécurité et adaptateur de voyage Pending EP3857652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18197274 2018-09-27
PCT/IB2019/058119 WO2020065545A1 (fr) 2018-09-27 2019-09-25 Dispositif de sécurité et adaptateur de voyage

Publications (1)

Publication Number Publication Date
EP3857652A1 true EP3857652A1 (fr) 2021-08-04

Family

ID=63708123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19783130.8A Pending EP3857652A1 (fr) 2018-09-27 2019-09-25 Dispositif de sécurité et adaptateur de voyage

Country Status (4)

Country Link
US (1) US11973298B2 (fr)
EP (1) EP3857652A1 (fr)
CN (1) CN112789771B (fr)
WO (1) WO2020065545A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM632684U (zh) * 2021-05-21 2022-10-01 大陸商東莞市佳旅電器有限公司 一種用於電源轉換器的防觸電機構

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484185A (en) * 1983-08-12 1984-11-20 Graves James D Safety plug adapter
DE3804264A1 (de) 1988-02-11 1989-09-14 Zumtobel Ag Elektrische anschlussklemme
GB9305347D0 (en) 1993-03-16 1993-05-05 Drewnicki Richard Electrical connector
JP4327374B2 (ja) 2001-03-16 2009-09-09 メトロ電気工業株式会社 電気こたつ用差込プラグ
AU2002302288A1 (en) 2001-06-05 2002-08-19 Mcruff Ag Travel plug set
CN100557891C (zh) 2001-06-05 2009-11-04 沃尔特·拉夫纳 电源插头
US8197260B2 (en) 2008-03-07 2012-06-12 Belkin International, Inc. Electrical connector and method of manufacturing same
CN102150331A (zh) 2008-06-17 2011-08-10 华特·鲁夫拿 具一插头部分和一可插入插头部分的插座部分的三极适配器套装
EP2297825B1 (fr) 2008-06-17 2014-05-14 Walter Ruffner Connecteur multiple
US8128434B1 (en) * 2008-10-31 2012-03-06 Technology Research Corporation Electrical adapter with fuse
CN203300549U (zh) 2013-05-29 2013-11-20 严钦华 一种具有双重保护功能的温度熔断器
CN206283054U (zh) 2015-09-11 2017-06-27 拉斯科运营控股有限责任公司 用于电源供应线的热侦测插头
EP3316414A1 (fr) 2016-11-01 2018-05-02 Travel Blue Limited Adaptateur de prise de courant de voyage pouvant être mis à la terre

Also Published As

Publication number Publication date
CN112789771B (zh) 2023-07-25
CN112789771A (zh) 2021-05-11
US11973298B2 (en) 2024-04-30
US20220190529A1 (en) 2022-06-16
WO2020065545A1 (fr) 2020-04-02

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Owner name: WORLDCONNECT AG