EP3514893A2 - Connecteur pour outils - Google Patents

Connecteur pour outils Download PDF

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Publication number
EP3514893A2
EP3514893A2 EP19151490.0A EP19151490A EP3514893A2 EP 3514893 A2 EP3514893 A2 EP 3514893A2 EP 19151490 A EP19151490 A EP 19151490A EP 3514893 A2 EP3514893 A2 EP 3514893A2
Authority
EP
European Patent Office
Prior art keywords
connector
plug
tool
optionally
plug connector
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.)
Withdrawn
Application number
EP19151490.0A
Other languages
German (de)
English (en)
Other versions
EP3514893A3 (fr
Inventor
Allen Johnson
Christopher James Joseph
Chi Hong Ho
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.)
Techtronic Cordless GP
Original Assignee
TTI Macao Commercial Offshore Ltd
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 TTI Macao Commercial Offshore Ltd filed Critical TTI Macao Commercial Offshore Ltd
Publication of EP3514893A2 publication Critical patent/EP3514893A2/fr
Publication of EP3514893A3 publication Critical patent/EP3514893A3/fr
Withdrawn legal-status Critical Current

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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
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5213—Covers
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • 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
    • H01R13/622—Screw-ring or screw-casing
    • 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
    • H01R13/623—Casing or ring with helicoidal groove
    • 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
    • H01R13/64—Means for preventing incorrect coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable

Definitions

  • the present invention relates to a connector plug assembly and particularly, although not exclusively, to a connector plug assembly for connecting a power tool to a wall socket for energy.
  • Plug and socket are typically used for connecting one device to another.
  • a plug refers to a male plug with some electrical pin contacts
  • a socket refers to a female receptacle with some receiving structures for receiving the electrical pin contacts, and thus enabling electrical connection between one device and another.
  • the plug usually has more than one pin or prong to be inserted in a female socket, and the pin or prong is designed to have a corresponding shape and length to that of the female receptacle. This is desired for establishing a good electrical connection between the plug and socket upon mating of the pin or prong with the receptacle.
  • each individual female socket is manufactured to connect to different devices, such that a device with the male plug can be mated with different devices with a female socket, depends on user's need. Due to its convenience and versatility, plug and socket are widely used in many electrical devices. However, accidents are common due to mismatching the connectors designed for different power ratings, and most if not all of the plugs and sockets are prone to damage upon contact with water, thereby posing significant danger to users.
  • a tool connector containing at least one male terminal or at least one female receptacle on one end, wherein the tool connector is arranged to connect with a power tool on the other end.
  • the tool connector may be further adapted to connect to a power tool through a cable, a power cord or a wire, and may be arranged to couple and electrically connect with a second connector through the at least one male terminal or the at least one female receptacle.
  • the tool connector may further include a screw thread on an outer circumferential portion of the tool connector, or a screw thread on the inner circumferential portion of a lock ring, wherein the lock ring is arranged to secure the tool connector with the second connector upon coupling.
  • the tool connector may further include a sealing ring to sealingly couple the tool connector with the second connector.
  • the tool connector may further contain a limiting structure for overcurrent protection.
  • the limiting structure may include a number of key or groove, corresponding to a current rating of the tool connector. More preferably, or optionally, the number of key or groove may increase with the current rating of the tool connector.
  • a plug connector comprising at least one male terminal or at least one female receptacle on one end; and a plug on the other end, wherein the plug is arranged to be inserted into a wall socket.
  • the plug connector may be further arranged to couple and electrically connect with a second connector through the at least one male terminal or the at least one female receptacle for supplying energy.
  • the plug connector may further contain a screw thread on an outer circumferential portion of the plug connector, or a screw thread on the inner circumferential portion of a lock ring, wherein the lock ring is arranged to secure the plug connector with the second connector upon coupling.
  • the plug connector may further contain a sealing ring to sealingly couple the plug connector with the second connector.
  • the plug connector may further contain a limiting structure for overcurrent protection.
  • the limiting structure may include a number of key or groove, corresponding to a current rating of the plug connector. More preferably, or optionally, the number of key or groove may increase with the current rating of the plug connector.
  • a connector plug assembly for use in power tool comprising a tool connector of the first aspect and a plug connector of the second aspect of the invention; wherein the plug connector is arranged to detachably couple with the tool connector for supplying energy.
  • the plug connector may contain a plug on one end arranged to be inserted into a wall socket for supplying energy to a power tool through the tool connector.
  • the connector plug assembly may contain a locking mechanism arranged to secure the connection between the tool connector and the plug connector.
  • the locking mechanism may include a lock ring arranged on the tool connector or the plug connector, and whereby upon coupling between the tool connector and the plug connector, the tool connector and the plug connector are in a locked position when threadedly engaged with each other by rotating the lock ring.
  • the connector plug may further contain a sealing ring between the tool connector and the plug connector.
  • the sealing ring may be arranged to be compressed in the locked position, such that the connector plug assembly is substantially waterproof.
  • the connector plug may further contain a limiting structure for overcurrent protection.
  • the tool connector may include a number of key, corresponding to a current rating of the tool connector.
  • the plug connector may include a number of grooves, corresponding to a current rating of the plug connector.
  • the number of key and groove may increase with the current rating of the tool connector and the plug connector respectively.
  • the number of key may be equal or smaller than the number of groove, and each key may be arranged to insert into one said groove.
  • the tool connector may include a number of grooves, corresponding to a current rating of the tool connector.
  • the plug connector may include a number of key, corresponding to a current rating of the plug connector. More preferably, or optionally, the number of grooves and keys may increase with the current rating of the tool connector and the plug connector respectively.
  • the number of key may be equal or smaller than the number of groove, and each key may be arranged to insert into one said groove.
  • the limiting structure may further limit the relative rotation between the tool connector and the plug connector upon connection.
  • the connector plug assembly may further contain a slidable cover sleeve for covering the lock ring in the locked position.
  • the connector plug assembly may further contain a mating mechanism for securing one end of the cover sleeve to a lip on the tool connector or the plug connector.
  • the maximum gap between one end of the cover sleeve and the lip may be 0.4mm.
  • the mating mechanism may contain a recess on an inner side of the cover sleeve, arranged to mate with a lock on the tool connector or the plug connector.
  • the cover sleeve may further contain a cut for facilitating the removal of the cover sleeve from the tool connector or the plug connector.
  • the present invention to address the above needs, to overcome or substantially ameliorate the above disadvantages or, more generally, to provide a waterproof connector plug assembly that allows the tool to be connected to virtually any electrical outlet with different voltage outputs.
  • variable plug connectors can be used to connect the tool to different types of wall socket, it allows the tool to be used in a more flexible manner.
  • the invention is applicable but not limited to use with a power tool by a layman.
  • Safety measures include a limiting structure on the connectors to avoid users from mismatching between incompatible connectors, thus protecting the tool and connectors from damage due to overloading.
  • the connector plug assembly further comprises a cover sleeve with a mating mechanism for hiding the connection between connectors and prevent easy removal between the plug connector and the tool connector.
  • FIG. 1 there is shown a cross-sectional view of a tool connector 100 in one embodiment.
  • the tool connector 100 comprises at least one male terminal 102 on one end and wherein the tool connector 100 is arranged to connect with a power tool (not shown) on the other end.
  • the tool connector 100 is adapted to connect to the power tool through an electrical connection 104 such as a cable, a power cord or a wire. Note that some components of the tool connector 100, such as the electric leads, are not shown in Figure 1 for the sake of simplicity.
  • the tool connector 100 is arranged to couple and electrically connect with a second connector (not shown) through the at least one male terminal 102.
  • a second connector (not shown)
  • the tool connector 100 may be elongated and cylindrical in shape.
  • the tool connector 100 is wrapped with an outer layer of insulated material such as plastic and rubber, for minimising the risk and danger to users in case of electric shock.
  • the tool connector 100 is adapted to connect with a cable 104 for connecting to a power tool or an electrical device.
  • the tool connector 100 comprises two male terminals 102 on one end for electrically connecting with two female receptacles of a second connector (not shown).
  • the tool connector 100 further comprises a lock ring 106 for securing the tool connector 100 with the second connector upon coupling.
  • the tool connector 100 further comprises a limiting structure 108 for overcurrent protection, wherein the limiting structure 108 includes a number of key or groove, corresponding to a current rating of the tool connector 100.
  • the tool connector 100 comprises one key 108.
  • the number of key 108 or groove increases with the current rating of the tool connector 100.
  • a tool connector with a current rating of 2.5A and another tool connector with a current rating of 5A may have one key and two keys respectively.
  • Figures 3 and 4 show a cross-sectional view and a perspective view of a plug connector 200 in one embodiment.
  • the plug connector 200 comprises at least one female receptacle 202 on one end and a plug 204 on the other end, wherein the plug 204 is arranged to be inserted into a wall socket.
  • the plug 204 may be a two-pin plug or a three-pin plug able to be directly plugged into a wall socket for power supply.
  • the plug connector is an example of the second connector as mentioned above which is suitable for cooperating with the tool connector in Figures 1 and 2 .
  • the plug connector 200 comprises a body 210 housing the plug 204 on one end and the female receptacles 202 on the other end.
  • the plug connector 200 is arranged to couple and electrically connect with a second connector (not shown) through the two female receptacles 202.
  • the body 210 is made of insulated material such as plastic and rubber, for minimising the risk and danger to users in case of electric shock.
  • the plug connector 200 further comprises a screw thread 206 on the outer circumferential portion for engaging the plug connector 200 with the second connector upon coupling.
  • the screw thread 206 on the outer circumferential portion of the plug connector engages with a screw thread on the inner circumferential portion of the lock ring of the second connector (not shown).
  • the plug connector 200 may comprise a sealing ring 212 for sealingly coupling with the second connector. Upon coupling and engaging with a lock ring, the sealing ring is compressed such that the connection is substantially waterproof.
  • the plug connector 200 further comprises a limiting structure 208 for overcurrent protection, wherein the limiting structure 208 includes a number of key or groove 208, corresponding to a current rating of the plug connector 200.
  • the plug connector 200 comprises one groove 208.
  • the number of key or groove increases with the current rating of the plug connector 200.
  • a plug connector with a current rating of 2.5A and another plug connector with a current rating of 5A may have one groove and two grooves respectively.
  • Figures 5a, 5b and 6 show a connector plug assembly 300 for use in power tool in an unlocked position and a locked position respectively where the connector plug assembly 300 includes the tool connector 100 shown in Figures 1 and 2 and the plug connector 200 shown in Figures 3 and 4 , wherein the plug connector 200 is arranged to detachably couple with the tool connector 100 for supplying energy.
  • the tool connector 100 is adapted to a cable 104 for connecting to a power tool
  • the plug connector 200 comprises a two-pin plug 204 on one end arranged to be inserted into a wall socket.
  • the connector plug assembly 300 supplies energy to the power tool through the tool connector 100 and plug connector 200.
  • the outer portion of the connector plug assembly 300 is of insulated material such as plastic and rubber, so as to minimise the risk and danger to users in case of electric shock, as well as to prevent the assembly 300 from being in contact or damaged by water.
  • a locking mechanism 106 is arranged to secure the connection between the tool connector 100 and the plug connector 200 such that the connection and energy supply to the power tool is unlikely to be accidently interrupted due to connectors falling apart.
  • the locking mechanism 106 comprises a lock ring 106 arranged on the tool connector 100.
  • a user may couple the tool connector 100 with a compatible plug connector 200 by inserting the two male terminals 102 of the tool connector 100 to the two female receptacles 202 of the plug connector 200. Upon coupling, the user may lock the two connectors together by rotating the lock ring 106 in a clockwise direction, such that the lock ring 106 on the tool connector 100 is threadedly engaged with the plug connector 200.
  • the sealing ring 212 is compressed between the tool connector 100 and the plug connector 200, such that the connector plug assembly 300 is substantially waterproof.
  • the user may rotate the lock ring 106 in an anticlockwise direction, such that the lock ring 106 on the tool connector 100 is threadedly disengaged with the plug connector 200.
  • the connector plug assembly 300 further comprises a limiting structure for overcurrent protection.
  • the tool connector 100 may include a number of key corresponding to a current rating of the tool connector 100
  • the plug connector 200 may include a number of groove corresponding to a current rating of the plug connector 200.
  • the number of key and groove increase with the current rating of the tool connector 100 and the plug connector 200 respectively.
  • a tool connector and a plug connector with a 2.5A current rating may have one key and groove respectively
  • a tool connector and a plug connector with a 5A current rating may have two keys and grooves respectively.
  • the limiting structure further limits the relative rotation between the tool connector 100 and the plug connector 200 upon connection.
  • Figures 7a to 7d show four embodiments of a front view of a set of plug connector 400a, 400b, 400c, and 400d with different numbers of groove 408.
  • Figures 7e to 7h show four embodiments of a front view of a set of tool connector 500a, 500b, 500c, and 500d with different numbers of key 508.
  • the number of key has to be equal or smaller than the number of groove.
  • a tool connector is only allowed to connect with a plug connector with an equal or higher current rating, such that the current drawn by the tool will not exceed the maximum limits of the connectors and damage the connectors.
  • the tool connector 500a with one key 508 and a current rating of 2.5A in Figure 7e can connect with the plug connectors 400a, 400b, 400c and 400d in Figure 7a to 7d , with each of them having a current rating equal or greater than 2.5A.
  • the tool connector 500c with three keys 508 and a current rating of 13A in Figure 7g can only connect with the plug connectors 400c and 400d in Figure 7c and 7d , having a current rating of 13A and 16A respectively.
  • This arrangement of limiting structure is particularly advantageous in preventing overcurrent, thus damaging the connectors and tools.
  • FIG. 8a there is shown a side view of a connector plug assembly 300 with a cover sleeve.
  • the connector plug assembly 300 may further comprise a slidable cover sleeve 312 for covering the lock ring in the locked position.
  • the cover sleeve 312 may be of the same colour as the tool connector 100 and the plug connector 200 such that the connection appears seamless.
  • the connector plug assembly 300 further comprises a mating mechanism for securing one end of the cover sleeve 312 to a lip 314 on the tool connector 100 or the plug connector 200.
  • Figures 8b and 8c respectively show a see-through view and a cross-sectional view of the connector plug assembly 300 with the cover sleeve 312 of Figure 8a .
  • the mating mechanism may include a recess on an inner side of the cover sleeve 312, arranged to mate with a lock 316 on the tool connector 100 or the plug connector 200.
  • the maximum gap between one end of the cover sleeve 312 and the lip 314 is 0.4mm. This gap is small to prevent users for removing the cover sleeve 312 easily or accidently.
  • the cover sleeve 312 further comprises a cut 318 for facilitating the removal of the cover sleeve 312 from the tool connector 100 or the plug connector 200 by a qualified personnel.
  • the connector plug assembly 300 is advantageous in that it includes a plug 204 on one side to supply energy from the wall socket to the power tool.
  • the limiting structure 108, 208 provides overcurrent protection to the connectors and the tool to prevent mismatch of connectors and damage to the tool.
  • it comprises a lock ring 108, a sealing ring 212 and a cover sleeve 312 for securing the connection between the tool connector 100 and the plug connector 200, such that the connector plug assembly is waterproof and safe for general users.
  • the female receptacles are configured on the plug connector
  • the male receptacles are configured on the tool connector.
  • the sealing ring is configured on the plug connector in the above embodiment, but it may also be configured on the tool connector, as shown in Figure 9 .
  • the plug connector may contain the lock ring and arranged to be threadedly engaged with a screw thread on an outer circumferential portion of the tool connector for securing the connection between two connectors.
  • the shape of the connector plug could also be in shapes other than round ones, for example rectangular or square in shape.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP19151490.0A 2018-01-18 2019-01-11 Connecteur pour outils Withdrawn EP3514893A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810048299.6A CN110061394B (zh) 2018-01-18 2018-01-18 连接器插头组件

Publications (2)

Publication Number Publication Date
EP3514893A2 true EP3514893A2 (fr) 2019-07-24
EP3514893A3 EP3514893A3 (fr) 2019-08-14

Family

ID=65019437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19151490.0A Withdrawn EP3514893A3 (fr) 2018-01-18 2019-01-11 Connecteur pour outils

Country Status (2)

Country Link
EP (1) EP3514893A3 (fr)
CN (1) CN110061394B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN113644481A (zh) * 2021-07-08 2021-11-12 杭州冬蝉温控设备有限公司 一种过载保护防水插头

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US11635181B2 (en) 2021-04-30 2023-04-25 Hgci, Inc. Mounting bracket system for light fixtures

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CN113644481A (zh) * 2021-07-08 2021-11-12 杭州冬蝉温控设备有限公司 一种过载保护防水插头

Also Published As

Publication number Publication date
EP3514893A3 (fr) 2019-08-14
CN110061394A (zh) 2019-07-26
CN110061394B (zh) 2022-03-08

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