WO2022136055A1 - Connecting device - Google Patents
Connecting device Download PDFInfo
- Publication number
- WO2022136055A1 WO2022136055A1 PCT/EP2021/085920 EP2021085920W WO2022136055A1 WO 2022136055 A1 WO2022136055 A1 WO 2022136055A1 EP 2021085920 W EP2021085920 W EP 2021085920W WO 2022136055 A1 WO2022136055 A1 WO 2022136055A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connecting device
- electrical conductor
- blade
- cutting edge
- leg
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims abstract description 70
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 7
- 210000002105 tongue Anatomy 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005476 soldering 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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/247—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
Definitions
- the present invention relates to a connecting device for establishing an electrical connection with at least one electrical conductor.
- a large number of cable or connection terminals are known from the prior art, which are used on the one hand to transmit information in the form of a signal or, as in the present invention, to transmit power in the form of electrical current.
- the element which is clamped and connected is a metallic cable with a sheath, such as a stranded cable or a solid wire cable.
- Solid wire conductors are cheap and work well for spring terminals because of their rigidity. Solid wire conductors are primarily used in house installations. Stranded wire conductors consist of a large number of individual fine wires, for example made of copper. Due to this structure, stranded wire conductors are more flexible than solid wire conductors and break less.
- Screw terminals are a simple way of connecting cables or wires to one another as part of an electrical installation. These terminals create a solid connection between two wires that are connected with the help of a screwdriver can be detached again. Screw terminals are also known as luster terminals.
- the luster terminal consists of an insulating material
- Plastic or ceramic housing this encloses a tubular profile made of an electrically conductive material.
- the profile has one or two threaded holes into which single or cross-slotted stud screws, which serve as clamping screws, are screwed. The stripped ends of the individual cables are inserted into this hollow profile and fastened with screws.
- Insulation displacement connectors are a connection technology in electrical engineering, especially for insulated copper wires. With a special tool, the cable consisting of the insulating jacket and metal conductor together with the insulation is pressed into a so-called insulation displacement connector.
- the insulation displacement connector which is usually made of metal, represents a sharp contact that cuts through the insulating jacket and at the same time creates an electrical connection. This connection technology works without soldering, screwing and stripping the cable.
- Insulation displacement terminals are primarily suitable for solid wire conductors and are used, for example, for signal transmission with ribbon cables.
- connection clamp from POENIX, model QT QUICKON, known from the state of the art, should be mentioned.
- This model uses a blunt insulation displacement connector that penetrates the insulation jacket and makes contact with the underlying conductor.
- a tool and an abutment are absolutely necessary.
- the structure of these terminals is correspondingly complex.
- the so-called WAGO terminals are intended for solid and stranded wires.
- the contact insert of such terminals usually consists of a piece of spring steel sheet and a current rail common to all terminal points, which is made of a material with good electrical conductivity. Depending on the number of clamping points, several leaf springs in the form of leaf spring tongues are cut or punched out of the piece of spring steel sheet.
- the contact insert is usually arranged in an at least partially transparent housing, preferably made of plastic.
- the electrical conductor for example the previously insulated copper wire, is pushed into the contact insert through an opening in the housing.
- the object of the present invention is to avoid at least one disadvantage known from the prior art.
- An advantage of the device according to the invention is that the electrical conductor does not have to be stripped beforehand. The removal of the insulating jacket and the subsequent contacting take place in a device without the use of an additional tool or, to put it another way, the stripping is integrated into the device.
- the connecting device has a housing for accommodating at least one electrical conductor.
- the housing has an opening into which the electrical conductor, for example a commercially available solid wire with a plastic sheath, is inserted.
- the electrical conductor for example a commercially available solid wire with a plastic sheath
- Such a housing usually has more than one opening, for example five, in order to be able to connect a corresponding number of electrical conductors to one another.
- the conductors are fixed in the housing in a self-locking manner, ie a certain amount of force is required to be able to pull them out of the opening again. It is provided that the electrical conductor can be removed again, on the one hand so that the device according to the invention can also be used several times and on the other hand to be able to correct incorrect assembly.
- a spring clamp is used for self-locking fixation.
- the electrical conductor occurs through an orifice and is pressed against a current-conducting rail by a spring tongue connected to the orifice. This is how contacting takes place. Roughly speaking, this principle is known from the prior art "WAGO clamp".
- the device according to the invention now additionally has a cutting edge, which peels off the insulating jacket of the conductor before it is gripped by the spring-cage terminal and comes into contact with the conductor rail.
- the cutting edge is spring-loaded and removes the insulating jacket.
- the insulation jacket is removed in the form of a chip along the longitudinal axis of the electrical conductor. Viewed in a direction of insertion, the cutting edge lies in front of the current conducting rail and the spring clip.
- the electrical conductor lies on a support or is pressed against such a support. Viewed in a direction of insertion, the support is positioned in front of the cutting edge.
- the resilient bearing is formed from a first and a second leg. The legs are coupled to each other.
- the cutting edge is arranged on one of the two legs
- the second leg is designed in such a way that it serves as a support for the electrical conductor.
- both legs are preferably movable relative to one another.
- the depth of penetration of the cutting edge into the insulation jacket is regulated with the aid of the support.
- the support prevents the cutting edge from digging in too deeply and thus getting caught in the metal wire below.
- the second leg serves to accommodate the current-conducting rail.
- the support is then formed by an area within the housing.
- one leg preferably the one on which the blade is located, is movable relative to the second leg, which is rigid. It is a kind of "pivoting movement". As soon as the electrical conductor hits the cutting edge, this digs deeper and deeper into the insulating sheath as the conductor moves in the direction of insertion.
- an abutment is provided essentially opposite this support.
- the electrical conductor runs between the support and the abutment, passes the cutting edge, is
- the power clamp is self-locking before the area of the conductor exposed by the cutting edge makes contact with the conductor rail.
- the abutment and support make it possible, among other things, to press the electrical conductor against the cutting edge with the desired force, so that it digs into the insulating jacket at the desired depth.
- Another additional spring element can be provided as an abutment or, alternatively, the abutment can be a part of the housing itself and can therefore be rigid.
- the advantage of the design as an additional spring element is that it can be adapted to different conductor diameters.
- the cutting edge has a blade which is wedge-shaped.
- a value between 10 and 25 degrees, preferably between 15 and 25 degrees, has proven to be a wedge angle for a good result when removing the insulating jacket.
- the blade is produced by stamping.
- the spring force clamp, the resilient bearing and the cutting edge with the blade are made in one piece, preferably stamped from a metal plate.
- the blade is ground. Cut along
- Blades are made as a separate part in this embodiment.
- a cable made of solid wire is preferably used as the electrical conductor in the device according to the invention.
- connection device is current-carrying at 450V (volts) and 24 A (ampere), which corresponds to a temperature rise in the device according to the invention of 45° C. at 24 A according to IEC 60998-1.
- FIG. 1 partially shows a first embodiment of the connecting device according to the invention in a perspective view obliquely from above
- Fig. 2 partially shows the first embodiment of the invention in a sectional view from the side
- Fig. 4 shows a section A from the illustration with regard to the spring-loaded cutting edge.
- Fig. 5 shows a second embodiment of the invention in a sectional view from the side
- FIG. 6 shows part of the second embodiment of the device according to the invention in a sectional view from the side
- 7 shows a third embodiment of the device according to the invention in a sectional view
- FIG. 8 shows a fourth embodiment of the device according to the invention in a sectional view.
- FIG. 1 partially shows a first embodiment of the connecting device 1 according to the invention in a perspective view obliquely from above.
- Five spring-loaded terminals 61 are shown as an example, each spring-loaded terminal 61 being set up to receive an electrical conductor 2, for example a copper wire sheathed in a PVC layer.
- the insulating jacket is denoted by 21 and the underlying metal wire by 22.
- a spring clamp 61 comprises a mouth 62 and a spring tongue 63 connected to this mouth.
- the user inserts the electrical conductor 2 into the device 1 according to the invention via an opening 3, without having to strip it first. This is first pressed against a support 10, which is part of the housing 4 (housing only partially visible in FIG. 1).
- a support 10 which is part of the housing 4 (housing only partially visible in FIG. 1).
- FIG. 1 partially shows a first embodiment of the connecting device 1 according to the invention in a perspective view obliquely from above.
- a further spring element 8 arranged opposite this support 10 is provided for this purpose.
- the cross section is preferably between 1.5 and 2.5 mm2.
- a spring-loaded cutting edge 7 is provided for stripping the electrical conductor 2 . Seen in an insertion direction ER, this cutting edge 7 is arranged in front of a current conducting rail 5 . Due to the resilient mounting, the cutting edge 7 is flexible when the electrical conductor is inserted and its depth of penetration into the insulating jacket 21 is variable. As can be seen clearly in FIG.
- the blade 71 removes the insulating jacket 21 of the electrical conductor 2 in the form of a chip before it passes the mouth 62 of the spring clamp 61 and makes contact with the conductor rail 5 .
- the electrical conductor 2 is fixed in the connecting device 1 in a self-locking manner by the spring-loaded terminal 61 . This can only be removed from the connecting device again by applying a certain tensile force.
- FIG. 2 shows a side view of the first embodiment of the device 1 according to the invention, in a sectional view.
- the electrical conductor 2 is anchored in the spring-loaded terminal 61 in an insertion direction ER. Shown schematically in FIG. 2, the direction of movement is also spring element 8, which presses electrical conductor 2 against support 10.
- the other spring element 8 and the support 10 are arranged inside the housing 4 .
- the blade 71 arranged on the cutting edge 7 moves from the surface of the insulating jacket 21 in the direction of the underlying metal wire 22 (metal wire 22 can be seen in Figure 1) and lays this before contacting with the conductor rail 5 occurs, free.
- FIG. 3 shows part of the device according to the invention in a sectional representation from the side.
- the electrical conductor is not inserted.
- the spring clamp 61 with the mouth 62 and the spring tongue 63.
- the resilient bearing 11 which has a first leg 11a and a second leg 11b.
- the cutting edge 7 with the blade 71 is a separate part which is connected to the second leg 1 1 b is connected. It is a ground blade 71 .
- the current conducting rail 5 is arranged on the first leg 11a.
- the resilient bearing 11 for the cutting edge 7 with the blade 71 is designed as follows in the embodiment according to Figure 4: It comprises a first leg 11A and a second leg 11B.
- the two legs 11A and 11 B are connected to each other and arranged at a distance A opposite to each other.
- the first leg 1 1 A is arranged following the mouth 62 of the spring clamp 61.
- the Stromleitzettel 5 is connected to this first leg 11A.
- the length of the first leg 11A corresponds approximately to the width of the conductor rail 5.
- the first leg 11A is shorter than the second leg 11B.
- the cutting edge 7 with the blade 71 is arranged on the second leg 11B.
- This leg can be moved relative to the first leg 11A. It is a kind of pivoting movement S which is indicated by the double arrow S in FIG.
- the mobility of the second leg 1 1 B to the first leg 1 1 A results from the flexural strength of the material used, preferably a metal.
- the flexural or torsional elasticity of the material is utilized for movements within a limited range.
- the cutting edge 7 with the blade 71 digs into the insulating jacket 21 when the electrical conductor 2 is in the insertion direction tion ER is moved. In this way, the insulating jacket 21 is peeled off in the form of a chip along the longitudinal direction L before contact is made with the current-conducting rail 5 .
- FIG. 5 and FIG. 6 show a sectional view from the side of a second embodiment of the invention. These are the same views as were already chosen for the first embodiment in FIG. 2 and FIG. The same reference numbers have been used.
- the difference between the first and the second embodiment is that the part of the device according to the invention shown in FIG. It is a stamped part and thus a blade 71 that is produced by stamping.
- FIG. 7 shows a further embodiment of the device according to the invention.
- the resilient bearing 1 1 ' comprises a first leg 1 1 A' and a second leg 1 1 B', with the cutting edge 7' being arranged on a second leg 1 1 B' and the first leg 1 1 A 'Serves as a support 10' for the electrical conductor 2.
- the electrical conductor 2 is inserted into the housing 4 in the direction of insertion ER and initially clamped between an abutment 12 and the support 10'. Then the electrical conductor 2 passes the blade 7 ′, which peels off the insulating jacket 21 , exposing the metal wire 22 before it comes into contact with the current-conducting rail 5 and is held by the spring-loaded clamp 61 .
- the support 10' is coupled to the blade 7' and prevents the cutting edge 7 from penetrating too deeply into the insulating jacket 21 and wedged in the underlying metal wire 22 (metal wire not visible in Figure 7).
- FIG. 8 shows an alternative embodiment to FIG. In contrast to Figure 7, the abutment 1 2 is designed as a further spring element 8 '.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180085883.9A CN116724468A (en) | 2020-12-23 | 2021-12-15 | Connection device |
DE112021006614.5T DE112021006614A5 (en) | 2020-12-23 | 2021-12-15 | Connection device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH001662/2020A CH718213B1 (en) | 2020-12-23 | 2020-12-23 | Connection device for establishing an electrical connection. |
CH1662/20 | 2020-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022136055A1 true WO2022136055A1 (en) | 2022-06-30 |
Family
ID=79282977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/085920 WO2022136055A1 (en) | 2020-12-23 | 2021-12-15 | Connecting device |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN116724468A (en) |
CH (1) | CH718213B1 (en) |
DE (1) | DE112021006614A5 (en) |
WO (1) | WO2022136055A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2873435A (en) * | 1956-12-24 | 1959-02-10 | Hubbell Inc Harvey | Stripless wiring for electrical wiring devices |
JPS5162375A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Ltd | |
FR2505562A2 (en) * | 1981-05-05 | 1982-11-12 | Alsthom Cgee | Dual compression-spring insulated cable connecting terminal - has lever action which allows penetration of insulation from two sides and simultaneous clamping of cable |
DE3122303A1 (en) * | 1981-06-04 | 1983-01-27 | Felten & Guilleaume Energietechnik GmbH, 5000 Köln | Spring terminal for the connection of insulated electrical conductors |
DE8908254U1 (en) * | 1989-07-06 | 1989-09-07 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004014353B4 (en) * | 2004-03-24 | 2007-11-15 | Hirschmann Automotive Gmbh | Contact carrier for a multi-functional contact and connector for this purpose |
DE102004030085B4 (en) * | 2004-06-22 | 2013-09-26 | Wago Verwaltungsgesellschaft Mbh | Terminal for connecting electrical conductors and terminal arrangement |
CN205543304U (en) * | 2016-01-19 | 2016-08-31 | 国网山东省电力公司莒南县供电公司 | Wire -terminal with from function of skinning |
CN212182562U (en) * | 2020-07-09 | 2020-12-18 | 深圳市鼎盈电力建设发展有限公司 | Power cable connecting device |
-
2020
- 2020-12-23 CH CH001662/2020A patent/CH718213B1/en unknown
-
2021
- 2021-12-15 WO PCT/EP2021/085920 patent/WO2022136055A1/en active Application Filing
- 2021-12-15 CN CN202180085883.9A patent/CN116724468A/en active Pending
- 2021-12-15 DE DE112021006614.5T patent/DE112021006614A5/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2873435A (en) * | 1956-12-24 | 1959-02-10 | Hubbell Inc Harvey | Stripless wiring for electrical wiring devices |
JPS5162375A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Ltd | |
FR2505562A2 (en) * | 1981-05-05 | 1982-11-12 | Alsthom Cgee | Dual compression-spring insulated cable connecting terminal - has lever action which allows penetration of insulation from two sides and simultaneous clamping of cable |
DE3122303A1 (en) * | 1981-06-04 | 1983-01-27 | Felten & Guilleaume Energietechnik GmbH, 5000 Köln | Spring terminal for the connection of insulated electrical conductors |
DE8908254U1 (en) * | 1989-07-06 | 1989-09-07 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De |
Also Published As
Publication number | Publication date |
---|---|
DE112021006614A5 (en) | 2023-11-23 |
CN116724468A (en) | 2023-09-08 |
CH718213A1 (en) | 2022-06-30 |
CH718213B1 (en) | 2023-12-15 |
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