WO2023072746A1 - Klemme - Google Patents
Klemme Download PDFInfo
- Publication number
- WO2023072746A1 WO2023072746A1 PCT/EP2022/079349 EP2022079349W WO2023072746A1 WO 2023072746 A1 WO2023072746 A1 WO 2023072746A1 EP 2022079349 W EP2022079349 W EP 2022079349W WO 2023072746 A1 WO2023072746 A1 WO 2023072746A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamping
- screw
- screws
- clamp
- housing
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims abstract description 50
- 238000003780 insertion Methods 0.000 claims description 51
- 230000037431 insertion Effects 0.000 claims description 51
- 239000003638 chemical reducing agent Substances 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
-
- 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
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut
-
- 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
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
Definitions
- the terminal intended and set up for connecting electrical conductors has an at least two-part housing with a housing base body and a housing cover as well as a clamping body placed in the housing base body.
- the terminal is a terminal with a basic housing body, a clamping body placed in the basic housing body and a housing cover closing the basic housing body and fixing the clamping body in the basic housing body.
- the terminal body has conductor insertion bores and clamping screw bores for clamping screws transverse to the conductor insertion bores.
- the special feature of the clamp is that the clamping screws are trunnion screws, i.e. the clamp has trunnion screws as clamping screws.
- shoulder screws are known per se and, like conventional screws (threaded screws), have a screw head and a threaded shank on the screw head.
- the peculiarity of shoulder screws is that they have an unthreaded shoulder at the end of the threaded shank.
- the diameter of the pin is smaller than the diameter of the threaded shank.
- a shoulder screw accordingly has at least two different shank sections, namely a shank with a thread adjoining the screw head and an adjoining journal with a comparatively smaller diameter.
- the clamping screw hole in the clamping body of the clamp has an internal thread in a manner known per se.
- the shoulder screws are selected or manufactured so that the threads (external threads) of the threaded shank match the internal threads of the clamping screw bores.
- One shoulder screw can thus be screwed into each clamping screw hole.
- Each clamping screw hole is open to one conductor insertion hole.
- the conductor insertion hole is a circle.
- the free end of the peg is a line, namely a line in the plane of the circle.
- this imaginary line will eventually come into contact with this imaginary circle (the trunnion abuts the inner surface of the conductor insertion hole).
- the imaginary line is then a chord of a circle.
- a circle segment remains between the circle chord and the circle. The circle segment is all the smaller
- each guide shaft has means for at least partially reducing the effective diameter (diameter reducer; diameter reducing means).
- Two ribs and/or flat areas lying opposite one another in pairs along a peripheral line of the guide shaft can be used as diameter reducers.
- Wire ends to be connected can be inserted directly and clamped by tightening the shoulder screws. It is not necessary to previously unscrew the shoulder screws to obtain free conductor insertion openings.
- the clamping body can also be placed in the housing base body without shoulder screws (subsequent assembly of the clamping body).
- the housing base body is then also closed by means of the housing cover and the housing cover fixes the clamping body in the housing base body.
- the shoulder screws are then inserted through the guide shafts formed in the housing cover and screwed at least partially, but also only partially, into the clamping screw bores in the clamping body. Even then, a user of a terminal produced in this way will find all conductor insertion openings open.
- both manufacturing variants offer the advantage that the smoothness of all threads can be checked before delivery of each clamp - in particular it can be checked automatically using appropriate screwing tools - and the manufacturer can check the proper functioning of the clamp and each of the Terminal included terminal point can ensure.
- the trunnion screws are screwed completely into the clamping screw bores and then screwed out again so far that there is only the above-mentioned piecemeal contact between the two threads, for example there is only one contact in the circumference of a thread.
- the threads are checked and the test is only considered successful if screwing in and then unscrewing is possible without any problems.
- the shoulder screws are inserted through the guide shafts and screwed completely into the threaded holes and then unscrewed again so far that there is only the above-mentioned piecemeal contact between the two threads. for example, there is only one contact around the circumference of a thread.
- the threads are checked when they are screwed in and then unscrewed, and the test is only considered successful if they can be screwed in and then unscrewed without any problems.
- FIG. 3 different views of an embodiment of the clamp proposed here
- Fig. 4 shows a section through the clamp in FIG. 1 to Fig. 3 ,
- Fig. 5 shows a schematically simplified representation of a guide shaft of the clamp in FIG. 1 to Fig. 3 ,
- FIG. 7 different views of a part of a housing cover of the terminal in FIG. 1 to Fig. 3 as well
- Fig. 8 is a view of the clamp from above with imaginary enveloping circles drawn in around the insertion openings there.
- FIG. 1 shows the clamp 10 in an isometric view, two side surfaces and the upper side of the clamp 10 being visible in the selected perspective.
- the illustration in Figure 2 shows the clamp 10 in a side ten view looking towards one of the large side surfaces of the clamp 10 .
- the representation in FIG. 3 shows the clamp 10 from above.
- FIG. 4 shows a section through the clamp 10 along the section line shown in FIG. 3 and labeled IV-IV there.
- the housing base body 12 accommodates a clamp body 20 .
- the housing cover 14 fixes the clamp body 20 in the housing base body 12 in the state in which it is placed.
- a brass rail or a component made of some other electrically conductive metal functions as the clamping body 20 .
- the clamping body 20 has, in a manner known per se, a plurality of continuous conductor insertion bores 22 (penetrating the clamping body 20 transversely to its longitudinal axis), which do not touch one another and do not intersect.
- the terminal body 20 has seven such conductor insertion bores 22 .
- This number of conductor insertion bores 22 is merely an example and instead of this number more or fewer conductor insertion bores 22 are also possible and conceivable and with this reference terminals 10 with more or fewer conductor insertion bores 22 also apply as covered by the description presented here.
- the clamping body 12 has—in a manner that is also fundamentally known per se—a number of clamping screw bores 26 corresponding to the number of conductor insertion bores 22 .
- the clamping screw bores 26 penetrate the clamping body 20 (without touching and without overlapping one another) in each case only as far as the conductor insertion bores 22 .
- the axial direction of the clamp screw bores 26 is perpendicular to the axis of the conductor insertion bores 22 and also perpendicular to the longitudinal axis of the clamp body 20 .
- the clamping screw bores 26 extend in the material of the clamping body 20 into the region of the respective conductor insertion bore 22 (in the axial direction) underneath.
- each clamping screw bore 26 meets the respective conductor insertion bore 22 in the region of the apex of the conductor insertion bore 22; the clamping screw bore 26 is aligned with the conductor insertion bore 22 (and accordingly a guide shaft 32 is then also aligned with a respective conductor insertion bore 22).
- Each clamp screw bore 26 is internally threaded.
- a clamping screw For screwing into a clamping screw hole 26 using the internal thread there, a clamping screw is provided in a manner that is basically known per se.
- trunnion screws 28 (FIG. 3, FIG. 4, FIG. 7, FIG. 8) act as clamping screws; the clamp 10 proposed here has shoulder screws 28 as clamping screws.
- the shoulder screws 28 are also visible in the illustration in FIG. 3 in the context of the top view of the clamp 10 shown there.
- a shoulder screw 28 comprises a screw head (head) with an actuating contour and a screw shank (shank) connected thereto with an external thread.
- a shoulder screw 28 The special feature of a shoulder screw 28 is that the shank with the external thread is concentrically connected to another cylindrical section with a smaller diameter than the shank. This further cylindrical section is the trunnion 30 (FIG. 4) of the trunnion screw 28 .
- the housing cover 14 has—in a manner that is also fundamentally known—a number of guide shafts 32 in the shape of a cylinder jacket, each for a shoulder screw 28 , corresponding to the number of conductor insertion bores 22 (and the clamping screw bores 26 ). These guide shafts 32 are aligned with the clamping screw bores 26 and the conductor insertion bores 22 and each end in the surface of the housing cover 14 in an insertion opening 34 (see FIG. 1: the reference line runs to the edge of the insertion opening 34).
- a central longitudinal axis of the guide shafts 32 meets perpendicularly with a central longitudinal axis of the conductor insertion bores 22 (meets or meets essentially and perpendicularly or at least essentially perpendicularly; both due to manufacturing tolerances that are always unavoidable). Due to the position of these central longitudinal axes relative to one another, it is justified to speak of guide shafts 32 concentric with the conductor insertion bores 22, at least in a broader sense.
- the insertion opening 34 allows the insertion of a tool, for example a screwdriver, for the known actuation of a shoulder screw 28 in each case.
- a diameter of the guide shafts 32 is adjusted to a diameter of the head of the shoulder screws 28 .
- the shoulder screws 28 can be inserted through the guide shafts 32 into the terminal 10 and brought into contact with the clamping body 20 .
- the shoulder screws 28 can also be attached to the clamping body 20 before the clamping body 20 is placed in the housing base body 12 (i.e. at least partially screwed into the internal threads of the clamping screw bores 26 there), with the clamp body 20 that has been fitted out in this way then being placed in the housing base body 12 and the housing base body 12 is then closed with the housing cover 14, the guide shafts 32 pass over the heads of the shoulder screws 28 and record them.
- the trunnions 30 of the trunnion bolts 28 cause a desired alignment of the trunnion bolts 28 to align with the clamp bolt bores 26 .
- the diameter of the pin 30 is smaller than the diameter of the clamping screw bores 26 (smaller than the diameter of an imaginary cylinder inscribed in the clamping screw bores 26, whose outer surface just touches the tips of the threads).
- the diameter of the pin 30 is also only slightly smaller than this diameter of the clamping screw bores 26 , ie for example at least more than half the diameter of the clamping screw bores 26 .
- the pin 30 has a diameter of 3.5 mm, while the core diameter of an M5 threaded hole has a diameter of 4.2 mm. Due to its diameter, the pin 30 can be introduced into the area of a clamping screw bore 26 by a purely translatory movement until the subsequent shank of the pin screw 28 comes into contact with its thread with the internal thread of the clamping screw bore 26 . As long as the thread on the shank of the trunnion screw 28 is not screwed into the internal thread of the clamping screw bore 26 , the trunnion 30 can be removed from the region of the clamping screw bore 26 by a purely translatory movement and the trunnion screw 28 remains movable in the axial direction.
- the said purely translatory movement is a translatory movement along the longitudinal axis of the trunnion screw 28 , along the central longitudinal axis of the respective guide shaft 32 or along the central longitudinal axis of the clamping screw bore 26 .
- journal 30 of a shoulder screw 28 is in the area of a clamping screw hole 26 and the thread on the shaft of the shoulder screw 28 has not yet been screwed into the internal thread in the clamping screw hole 26, the end of the shoulder screw 28 located in the area of the clamping screw hole 26 is in the clamping screw hole 26 still movable, namely radially to the longitudinal axis of the pivot screw 28 movable.
- this mobility is limited by the diameter of the clamping screw bore 26 . The mobility is given only as long and to the extent that the pin 30 abuts against the inner surface of the clamping screw bore 26 .
- a shoulder screw 28 that is also fixed in the axial direction at the same time cannot leave the area of the clamping screw bore 26 and be flush with the clamping screw bore 26 .
- the shoulder screw 28 can thus be screwed into the clamping screw bore 26 , namely the internal thread there, at any time. This is independent of the orientation of the clamp 10 when the trunnion screw 28 is actuated.
- journal screws 28 Because of the journals 30 at the end of the journal screws 28 , an alignment of the journal screws 28 that is sufficiently aligned with the clamping screw holes 26 is ensured even in such attachment situations with the journals 30 located in the region of the clamping screw holes 26 .
- a sufficiently flush alignment is an alignment in which the thread of the journal screw 28 can be screwed directly into the internal thread in the clamping screw bore 26 .
- each of a clamping screw hole 26 and of the respective guide shaft 32 are at least parallel and normally coincide or at least essentially coincide.
- the trunnion 30 of which is inserted in a clamping screw bore 26 is inserted, this ensures that the longitudinal axis of this shoulder screw 28 is also parallel or at least essentially parallel to the central longitudinal axis of the clamping screw bore 26 , i.e. that the shoulder screw 28 can be screwed directly into the thread of the clamping screw bore 26 .
- FIG. 5 shows in a schematically simplified manner the basic geometric conditions inside a Guide shaft 32 with reducers 40 .
- FIG. 5 shows two opposing ribs 42 and two opposing flat areas 44 as diameter reducers 40 . These are distributed regularly along the peripheral line of the guide shaft 32 .
- the ribs 42 and the flats 44 thus reduce the effective diameter of the chute 32 .
- This designation includes the two options described here for reducing the effective diameter (rib (s) 42 and / or flat (s) 44) and all of these options Apart from the specific embodiment shown in the figures, any number and arrangement can be considered.
- the or each flat point 44 can be longer in the axial direction of the respective guide shaft 32 than the or each rib 42 in the same guide shaft 32.
- the diameter reducers 40 are each effective together for axial fixing.
- the area of a guide shaft 32 in which it (along its axial extent) has all diameter reduction means, ie all diameter reducers 40 (ie, for example, all ribs 42 and all flat areas 44), is referred to as the fixing section.
- the fixing portion is a cylindrical portion within each guide chute 32, which extends in the axial direction of the guide chute 32 from one end of each rib 42 comprised by the guide chute 32 to the other end thereof.
- the flat areas 44 also extend in this area, ie in the area of the fixing section. However, these extend—in the axial direction of the guide shaft 32—if necessary beyond the fixing section on one or both sides.
- a further diameter d3 is considered in addition to the two diameters d1 and d2 already mentioned.
- the diameters are: Firstly, the diameter dl of a guide shaft 32 (each guide shaft 32), then the diameter d2 of a circle 46 (diameter d2 in the fixing section) inscribed as described above in the guide shaft 32 in the area of the diameter reducer 40, and finally the diameter d3 of a exactly cylindrical screw head of a shoulder screw 28.
- the location of the fixing section along each guide shaft 32 (the fixing section extends in the axial direction of the guide shaft 32 in each guide shaft 32) is selected such that the clamping of the screw head is effective in any case when the pin 30 is on the screw head opposite end of the shoulder screw 28 is located in the region of the respective clamping screw hole 26 . Due to the clamping of the screw head, the trunnion screw 28 is then fixed in the axial direction and the trunnion 30 in the clamping screw bore 26 fixes the trunnion screw 28 in the radial direction. The trunnion screw 28 is then positioned flush over the clamping screw bore 26 in the manner mentioned above and is also fixed here at least to prevent it from falling out unintentionally or from undesired tilting.
- the flat areas 44 as diameter reducers 40 have a further advantage in addition to contributing to the axial fixation of a trunnion screw 28 and the one-sided (headed) radial fixation of a trunnion screw 28, which is explained with reference to the illustration in FIG.
- the representation in FIG. 8 shows the clamp 10 from above as in FIG. Two of the trunnion screws 28 are hidden in favor of showing an imaginary enveloping circle 48 (the representation in FIG. 3 shows all trunnion screws 28, namely their respective screw heads that can be seen in the guide shafts 32).
- the enveloping circles 48 enclose the insertion opening 34 of a respective guide shaft 32 (the enveloping circle 48 corresponds to the circle with the radius rl in the illustration in FIG. 5).
- the guide shafts 32 are arranged in the housing cover 14 along a straight line. In each case two guide shafts 32 are correspondingly adjacent to one another in pairs.
- the flat spots 44 functioning as diameter reducers 40 are each located in an area of the smallest distance between two guide shafts 32 that are adjacent in pairs. This enables a very small distance between two guide shafts 32 that are adjacent to each other in pairs while at the same time maintaining a separation of the guide shafts 32 (the inner surface of each guide shaft 32 is continuous along the entire circumference).
- a particularly small distance is given when the guide shafts 32 are formed in the housing cover 14 with such distances that imaginary minimum enveloping circles 48 touch each other around an insertion opening 34 of the guide shafts 32 or overlap in places.
- the illustration in FIG. 7 shows the situation of enveloping circles 48 at least touching one another.
- the enveloping circles 48 are minimal if they have the smallest possible diameter with which the enveloping circles 48 still enclose the insertion opening 34 .
- the flats 44 of all the guide shafts 32 are parallel to one another. This allows for little or minimal spacing between all guide chutes 32 . This allows to continue along the straight line along which the guide tion shafts 32 are arranged and formed in the housing cover 14, a small overall size of the terminal 10. Finally, this also enables a correspondingly short clamping body 20 and a short clamping body 20 leads to a saving in material.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Clamps And Clips (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280069344.0A CN118104079A (zh) | 2021-10-27 | 2022-10-21 | 端子连接器 |
EP22803300.7A EP4423861A1 (de) | 2021-10-27 | 2022-10-21 | Klemme |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202021105883.8 | 2021-10-27 | ||
DE202021105883.8U DE202021105883U1 (de) | 2021-10-27 | 2021-10-27 | Klemme |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023072746A1 true WO2023072746A1 (de) | 2023-05-04 |
Family
ID=84359121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/079349 WO2023072746A1 (de) | 2021-10-27 | 2022-10-21 | Klemme |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4423861A1 (de) |
CN (1) | CN118104079A (de) |
DE (1) | DE202021105883U1 (de) |
WO (1) | WO2023072746A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008046467A1 (de) * | 2008-09-09 | 2010-03-11 | Phoenix Contact Gmbh & Co. Kg | Elektrische Vorrichtung mit Schraubklemme |
EP2215693A1 (de) | 2007-11-30 | 2010-08-11 | Phoenix Contact GmbH & Co. KG | Anordnung zur schraubensicherung von elektrischen anschlussklemmen |
DE202014105219U1 (de) | 2014-10-31 | 2015-06-03 | Hora - Werk Gesellschaft Mit Beschränkter Haftung | Erdungsschienenvorrichtung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007058040A1 (de) | 2007-11-30 | 2009-06-10 | Phoenix Contact Gmbh & Co. Kg | Vorrichtung und Verfahren zur verliersicheren Aufnahme einer Schraube an einer Anschlussklemme |
DE202008011993U1 (de) | 2008-09-09 | 2010-09-16 | Phoenix Contact Gmbh & Co. Kg | Elektrische Vorrichtung mit Schraubklemme |
DE202008012128U1 (de) | 2008-09-11 | 2009-04-16 | Phoenix Contact Gmbh & Co. Kg | Elektrische Vorrichtung |
DE202011000622U1 (de) | 2011-03-18 | 2011-06-09 | Hora-Werk GmbH, 32257 | Sammelschienenabgreifklemme |
-
2021
- 2021-10-27 DE DE202021105883.8U patent/DE202021105883U1/de active Active
-
2022
- 2022-10-21 CN CN202280069344.0A patent/CN118104079A/zh active Pending
- 2022-10-21 WO PCT/EP2022/079349 patent/WO2023072746A1/de active Application Filing
- 2022-10-21 EP EP22803300.7A patent/EP4423861A1/de active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2215693A1 (de) | 2007-11-30 | 2010-08-11 | Phoenix Contact GmbH & Co. KG | Anordnung zur schraubensicherung von elektrischen anschlussklemmen |
DE102008046467A1 (de) * | 2008-09-09 | 2010-03-11 | Phoenix Contact Gmbh & Co. Kg | Elektrische Vorrichtung mit Schraubklemme |
DE202014105219U1 (de) | 2014-10-31 | 2015-06-03 | Hora - Werk Gesellschaft Mit Beschränkter Haftung | Erdungsschienenvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
CN118104079A (zh) | 2024-05-28 |
EP4423861A1 (de) | 2024-09-04 |
DE202021105883U1 (de) | 2023-01-30 |
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