WO2022207444A1 - Élément de déplacement d'isolation, stator de machine électrique et procédé de fabrication de stator - Google Patents

Élément de déplacement d'isolation, stator de machine électrique et procédé de fabrication de stator Download PDF

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Publication number
WO2022207444A1
WO2022207444A1 PCT/EP2022/057747 EP2022057747W WO2022207444A1 WO 2022207444 A1 WO2022207444 A1 WO 2022207444A1 EP 2022057747 W EP2022057747 W EP 2022057747W WO 2022207444 A1 WO2022207444 A1 WO 2022207444A1
Authority
WO
WIPO (PCT)
Prior art keywords
legs
insulation displacement
press
displacement element
wire
Prior art date
Application number
PCT/EP2022/057747
Other languages
German (de)
English (en)
Inventor
Manuel Ehrmann
Joachim Klima
Coralie Koo Sin Lin
Juergen Kober
Juri Hartmann
Dieter Holz
Tilo Koenig
Florian Burger
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN202280038934.7A priority Critical patent/CN117397126A/zh
Publication of WO2022207444A1 publication Critical patent/WO2022207444A1/fr

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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
    • 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
    • H01R4/242—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 being plates having a single slot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines

Definitions

  • the invention relates to insulation displacement elements, in particular for electrically contacting wires, in particular in an electrical machine according to the species of the independent claim.
  • the invention further relates to a stator and an electrical machine with such an insulation displacement element and a method for producing a stator with such an insulation displacement element.
  • a well-known cold contact technique is realized by insulation displacement connections (SKV).
  • the wire is first placed in a plastic receiving pocket, into which a cutting-clamping element is inserted.
  • the wire is clamped between two legs of the cutting-clamping element, which has cutting elements at the free ends of the legs, which strip the wire between the legs when it is inserted.
  • the cutting elements and the distance between the legs are typically adapted to the wire diameter, so that the insulation can be reliably stripped and securely clamped between the legs.
  • This has the disadvantage that a special cutting and clamping element has to be used for each wire diameter.
  • DE 102017210811 A1 shows and describes an improved cutting and clamping element for contacting wires.
  • the cutting and clamping elements shown there have a deforming area on the legs, which first plastically deforms the inserted wires before stripping and can thus compensate for tolerances in the wire diameter.
  • This cutting and clamping element can thus be used to a certain extent for different wire diameters.
  • the disadvantage is that if the wire diameters are too large, the legs are spread too wide during forming and the legs themselves may be plastically deformed. The consequence of this is that the cutting elements on the legs may be at the wrong distance from one another, so that the wire is no longer stripped correctly. This means that a good electrical connection cannot always be guaranteed. Furthermore, it cannot be ensured that it can be reliably fixed or clamped between the legs.
  • the object of the present invention is to overcome this disadvantage and to provide a cutting and clamping element which can also be used in a wide range of wire diameters and thereby enables a reliable clamping effect and good electrical contact.
  • the present invention describes an insulation displacement element, in particular for electrical contacting of wires, in particular in an electrical machine, the insulation displacement element being fork-shaped and having two legs which are designed to jointly accommodate a wire, the two limbs are connected to one another via a clamping base, and the limbs each extend along a press-in direction, the limbs each having a cutting edge on their inner sides, and the two limbs having a deformed area on their inner sides, which in the press-in direction between the cutting edges and the free ends of the two legs is arranged, the forming area being provided for the plastic deformation of wires and having two forming surfaces running towards one another in the direction of the cutting edges on the inner sides of the two legs taper towards the free ends at least in sections.
  • the cutting and clamping element has a base section from which the two legs extend in the press-in direction.
  • the base section can have contact to an electrical conductor, for example from a wiring board.
  • a press-in direction is to be understood in particular as the direction in which the cutting-and-clamping element is intended to be pressed onto the wire or into the receiving pocket with the wire.
  • the press-in direction extends along an axis of symmetry of the clip-on element, which is arranged between the two legs.
  • the fact that the legs taper at least in sections in the press-in direction is to be understood in particular as meaning that the width of the legs along the press-in direction becomes smaller at least in sections, preferably at least 20% smaller overall, particularly preferably at least 30% smaller.
  • the limbs preferably taper along a section which is at least 50% of the entire longitudinal extension of the limbs in the pressing-in direction, preferably at least 70%, particularly preferably at least 80%.
  • a clamping area is preferably arranged on the inner sides of the legs on the clamping base, on which the inner sides of the legs are arranged largely parallel to one another, in particular largely parallel to the press-in direction.
  • the wire end position is arranged in the clamping area.
  • the cutting edges are advantageously arranged opposite one another on the insides of the two legs, ie in particular at the same height with respect to the press-in direction.
  • a cutting edge can be understood in particular as a scraping edge or a blade.
  • a scraping edge is in particular an edge which is arranged at an angle to the press-in direction and is designed to scrape off the wire.
  • a lacquer coating is removed from the wire and the wire stripped.
  • a part of a copper wire under the lacquer coating can also be removed over a large area. This creates a chip.
  • a scraping edge creates a contact surface on the wire which can be contacted by the cutting and clamping element.
  • a blade is provided specifically for cutting the wire.
  • the lacquer coating is cut and the copper wire notched. As a rule, no chips are produced as a result.
  • the forming area is intended in particular to suitably adapt the cross-section of the inserted wire, if necessary, to the width of the cutting edges.
  • a wire cross section is larger by a predetermined oversize than the distance between the cutting edges. The excess is selected in such a way that the wire is reliably stripped and a sufficiently large contact surface is created.
  • the two legs have a first leg width at the clamping base that is greater than a second leg width at the cutting edge, in particular that the second leg width is between 40% and 65%, preferably between 45% and 60%, particularly preferably between 50% and 55% of the first leg width. In this way it can be ensured particularly well that the legs do not widen at the clamping base or in the clamping area, so that a particularly good clamping effect is achieved.
  • a leg width is advantageously to be understood as a leg width perpendicular to the press-in direction or perpendicular to an axis of symmetry of the cutting-and-clamping element.
  • a first leg width is to be understood in particular as the leg width which is arranged directly on the clamping base.
  • the first leg width on the clamping base can also be understood to mean a leg width in a clamping area between the two legs, in which the two inner sides of the legs are aligned largely parallel to one another.
  • a first leg width is particularly advantageously understood to mean the largest leg width in the clamping area, in which the two inner sides of the legs are aligned largely parallel to one another.
  • the first leg width is the leg width in the clamping area, in which the two inner sides of the legs are aligned largely parallel to one another, arranged closest to the base of the clamp.
  • the second leg width in the forming area is the largest leg width in the forming area; the second leg width is particularly advantageously arranged directly on the cutting edge or on a constriction of the leg to form the cutting edge.
  • the insulation displacement element is further improved if the respective leg width of the two legs starting from the clamping base along the Press-in direction largely decreases up to the cutting edge. This has the advantage that a particularly good stress distribution along the press-in direction can be achieved when the legs are bent.
  • leg width largely decreases along a specified length
  • leg width decreases, advantageously strictly monotonically, along a length in the press-in direction of at least 80%, preferably at least 90%, particularly preferably at least 95% of the specified length.
  • the cutting edge encloses an angle of between 65° and 90°, preferably between 70° and 85°, particularly preferably between 75° and 80°, with the press-in direction, the wire can be stripped particularly efficiently and reliably.
  • the shanks are constricted at the cutting edge, with a third shank width advantageously at the constriction of between 25% and 50%, preferably between 30% and 45%, particularly preferably between 35% and 40% of the first shank width amounts to.
  • the cutting edge in particular can be largely decoupled elastically from the forming area. This means that even the largest wire diameters, which require higher forming forces, can be used without significantly increasing the distance between the cutting edges. Since the forming area no longer has any further function after the joining process, a greater expansion or plastic deformation of the legs can be accepted in this area.
  • the insulation displacement element is further improved if the insulation displacement element, from the base of the clamp, has a longitudinal extension counter to the press-in direction which is between 65% and 135%, preferably between 85% and 115%, particularly preferably between 95% and 105% % of the first leg width.
  • this longitudinal extent describes the length of the base section in the pressing-in direction along the axis of symmetry, with the base section being the section from which the two legs extend.
  • the legs are further reinforced at the base of the clamp, so that they are not so easy let deform. This further contributes to a secure clamping effect, particularly in the clamping area.
  • a particularly favorable clamp geometry is present when the two legs each have an outer contour on their outer sides, which is largely S-shaped along the press-in direction. This enables a particularly homogeneous or balanced distribution of stress in the leg. As a result, a maximum elastic widening of the legs can be achieved, so that a reliable clamping effect and electrical contacting can be ensured.
  • the two legs with their inner sides in the forming area or the forming surfaces enclose a forming opening angle of between 6° and 16°, preferably between 8° and 14°, particularly preferably between 10° and 12 ° is.
  • a forming opening angle of between 6° and 16°, preferably between 8° and 14°, particularly preferably between 10° and 12 ° is.
  • the maximum force that can be applied is limited by the elasticity of the legs, but the force required can be reduced by a smaller forming opening angle.
  • this requires a greater longitudinal extension of the legs.
  • the above values for the forming opening angle offer the best compromise between the total length of the separator and clamping element and the forming forces that can be applied, with the exact values depending on other influencing factors, in particular the materials selected or the surface roughness.
  • the insulation displacement element is particularly reliable if the two legs each have a catching area at their free ends, with an inner side in the catching area enclosing a catching opening angle with the press-in direction of between 30° and 55°, preferably between 35° and 50°, particularly preferably between 40° and 45°. In this way, even wires that are not in the middle can be centered and reliably installed.
  • the reliability is further improved if the two legs each have a catch area at their free ends in which the legs each have a centering shoulder on their outer sides which extends largely perpendicularly to the press-in direction, on which the legs each have a fourth side width between 50% and 80%, preferably between 55% and 75%, particularly preferably between 60% and 70% of the first side width.
  • the centering shoulders make it easier and more reliable for the cutting-and-clamping element to be correctly centered and inserted into the receiving pocket.
  • a clamping step is formed along the inner sides of the two legs, which is arranged between the cutting edges and the clamping base, with each inner side in the area of the clamping step enclosing a step opening angle with the pressing-in direction of between 5° and 30°, preferably between 10 ° and 25 °, particularly preferably between 15 ° and 20 °, the clamping and electrical contacting of the wire is even more reliable.
  • the clamping step is advantageously arranged between the cutting edges and the clamping area. The inner sides of the legs thus run towards one another in sections after the cutting edges against the press-in direction in the direction of the clamping step or the clamping base in the area of the clamping step or run in a funnel shape there.
  • the wire stripped by the cutting edge is once again somewhat elastically compressed or prestressed by the clamping step before it reaches its end position in the clamping step or on the clamping base.
  • the wire is arranged in the clamping step or at the clamping base with a spring load or elastic tension, so that the clamping effect is improved.
  • a transition area is formed between the clamping step and the cutting edges, in which the inner sides of the two legs extend essentially along the press-in direction, the transition area having a transition length in the press-in direction of between 10% and 35%, preferably is between 15% and 30%, particularly preferably between 20% and 25% of the first leg width. In this way, the functions of cutting or stripping the wire and clamping the wire are decoupled.
  • the reliability of the insulation displacement element is further increased if a Main locking hook and a secondary locking hook are formed, which are designed to dig into a receiving pocket, the main locking hook being arranged in front of the secondary locking hook in the press-in direction and the main locking hook having a first hook length which is between 120% and 240%, preferably between 160% and 220%, particularly preferably between 180% and 200% of a second hook length of the secondary locking hook.
  • This has the advantage that a chip of the receiving pocket scraped off by the main latching hook is pressed into the intermediate area between the main latching hook and the secondary latching hook, so that the secondary latching hook is buried by this chip. This enables a particularly strong hold of the Scheid-clamping element in the receiving pocket.
  • a hook length is to be understood in particular as a direction of extension of a latching hook perpendicular to the press-in direction or center line of the clipping element.
  • the length of the hook can in particular be between an outermost end point of the latching hook and an imaginary base line from which the latching hook extends out of the base section of the cutting-and-clamping element.
  • a straight line aligned parallel to the press-in direction or center line can be used as a baseline, which runs through a bottom of a valley between the main latching hook and the secondary latching hook.
  • the base line can run through an imaginary point on the outside of the insulation displacement element, which is arranged in the press-in direction between the main latching hook and the secondary latching hook and is at the shortest distance from the center line.
  • a stator for an electrical machine is also advantageous, with a stator base body that has coils of an electrical winding, with an insulating mask being arranged on one end face of the stator base body, with each coil being assigned at least one receiving pocket on the insulating mask, into which a wire is inserted for interconnecting the individual coils, and in each case an insulation displacement element according to the present invention is added to the wire in the receiving pocket.
  • a stator can be manufactured in a particularly simple and reliable manner, in particular since hardly any faulty contacts are to be expected during the manufacturing process due to the insulation displacement elements used.
  • An electrical machine is also advantageous--in particular an electronically commutated electric motor--with at least one insulation displacement element according to the present invention, an electronic unit being arranged for energizing the coils and external connection contacts of the electrical machine being connected by means of the at least one insulation displacement Clamping elements are connected to the coils.
  • Such an electrical machine is characterized by high reliability and operational safety due to the use of the cutting and clamping element according to the invention with its optimized clamping effect over a wide range of wire diameters.
  • the insulation displacement elements are pressed with the legs in the axial direction into the receiving pockets, with the legs first forming the wire in the forming area when being pressed in, then stripping the wire with the cutting edges and then clamping the wire between the legs, particularly in a clamping area .
  • the method is particularly flexible since the same cutting and clamping element can be used for different stators with different wire diameters.
  • the press-in direction is advantageously aligned along the axial direction.
  • FIG. 1 shows the functional principle of the cutting-and-clamping element from the prior art
  • FIGS. 2 and 3 show two different embodiments of the cutting and clamping element according to the present invention
  • FIG. 4 shows a detailed drawing of an embodiment of half a sheath clamp element, bisected along the axis of symmetry of the sheath clamp element,
  • FIG. 5 shows a schematic detailed drawing of an embodiment of a half insulation displacement element
  • FIGS. 6 and 7 further variants of the clipping element according to the present invention.
  • Figure 8 is a representation of the Scheid-clamping element from Figure 5 during molding
  • Figure 9 is a sectional view taken along line IX-IX of Figure 6 showing the cutting edges in more detail.
  • FIG. 1 shows such a cutting-and-clamping element 10 from the prior art to clarify the functional principle of a cutting-and-clamping element 10 with a deforming region 12 .
  • the cutting-and-clamping element 10 according to the present invention is based on this element from the prior art and functions according to the same basic principle, but has been further developed and has a significantly improved functionality.
  • a wire 14 to be contacted is guided to a catch area 16 of the cutting and clamping element 10 .
  • the wire 14 is arranged in a pocket (not shown), usually a pocket made of plastic, which is also designed to guide the cutting and clamping element. In this case, the cutting and clamping element 10 is moved or guided along a press-in direction 18 towards the wire 14 .
  • the clipping element 10 and the wire 14 are aligned with one another by the catching area 16 .
  • the wire 14 is guided into the forming area 12 of the cutting and clamping element 10 .
  • the cross section of the wire 14 is plastically formed, see FIG. 1c).
  • the wire 14 shown in FIG. 1 has a cross section or diameter that is too large for the cutting edges 20, since the two cutting edges 20 are at a smaller distance from one another than the diameter of the original wire 14.
  • the wire 14 is deformed in this way that it fits between the two cutting edges 20.
  • Figures 2 and 3 show two embodiments of the clip-on element 10 according to the present invention.
  • the two legs 24 taper in sections in the press-in direction 18 towards their free ends 26 .
  • a width of each of the two legs 24 perpendicularly to the press-in direction 18 decreases largely continuously, starting from a terminal base 28 to the cutting edge 20 .
  • the cutting and clamping element 10 has a base section 70 from which the two legs 24 extend in the press-in direction 18 .
  • the legs 24 extend from the base of the clamp 28 in Press-in direction 18.
  • the base section 70 is advantageously of largely rectangular design.
  • the base section 70 connects the two legs 24 to one another.
  • the clamp base 28 is the area between the two legs 24 where the legs 24 meet the base portion 70 .
  • the base section 70 and the two legs 24 are advantageously formed in one piece with one another.
  • a clamping area 22 is formed on the terminal base 28 between the respective inner sides 30 of the two legs 24 .
  • the two inner sides 30 of the legs 24 in the clamping region 22 are advantageously configured largely parallel to one another, advantageously largely parallel to the press-in direction 18.
  • a clamping gap width i.e. the distance between the two legs 24 or the inner sides 30 of the legs 24 in the clamping region 22 along the Press-in direction 18 largely constant.
  • the clamping area 22 is designed in the form of a slot.
  • a cutting area which has two cutting edges 20 , is arranged on the inner sides 30 from the terminal base 28 in the press-in direction 18 after the clamping area 22 .
  • the two cutting edges 20 are each arranged on the respective inner side 30 of the two legs 24 .
  • the cutting edges 20 are advantageously arranged opposite one another, i.e. in particular at the same height with respect to the press-in direction 18.
  • a deforming region 12 is arranged on the legs 24 and extends along the inner sides 30 .
  • the forming region 12 is advantageously designed in the shape of a funnel.
  • the forming area 12 or the inner sides 30 of the forming area 12 tapers in the direction of the cutting edges 20 or counter to the press-in direction 18.
  • the inner sides 30 of the legs 24 in the forming area 12 form forming surfaces 32 which point in the direction of the cutting edges 20 or counter to the press-in direction 18 converge.
  • the deforming surface 32 is designed to contact and deform the inserted wire 14 .
  • a catch region 16 Arranged on the legs 24 or their inner sides 30 , starting from the deformed region 12 in the press-in direction 18 , is a catch region 16 which extends to the free ends 26 of the legs 24 .
  • the inner sides 30 are designed in particular in the shape of a funnel in the catch area 16 .
  • the inner sides 30 in the catch area 16 have a larger opening angle than the inner sides 30 in the forming area 12. In other words, the inner sides 30 in the catch area 30 converge more strongly or steeply or at a flatter angle than in the forming area 12.
  • the cutting-and-clamping element 10 is designed largely symmetrically along the press-in direction 18 .
  • the cutting-and-clamping element 10 is mirror-symmetrical to an imaginary center line 34 which extends along the press-in direction 18 and is arranged centrally between the two legs 24 .
  • the cutting-and-clamping element 10 can also be represented completely by the representation of one half on one side of the center line 34 with only one leg.
  • Figures 4 and 5 show variants of the Scheid-clamping element 10 in such a representation of one half of the Scheid-clamping element 10.
  • Figure 4 shows a slightly modified variant of the Scheid-clamping element 10 from Figure 3
  • Figure 5 shows a Variant of the Scheid-Klemm-Element 10 with more straight lines which is intended to better illustrate geometric aspects.
  • the cutting edge 20 encloses a cutting angle 36 of 72° with the press-in direction 18 or imaginary center line 34 .
  • the cutting angle 36 is 90°, for example.
  • a first leg width 38 at the clamping base 28 and a second leg width 40 at the cutting edge 20 can be considered.
  • the second leg width is 4057% of the first leg width 38.
  • the second leg width 40 is 60% of the first leg width 38.
  • the leg width largely decreases in the press-in direction 18 starting from the clamping base 28 to the cutting edge 20 .
  • the inside 30 in the clamping area 22 runs largely parallel to the press-in direction 18.
  • An outside 42 of the leg approaches the inside 30 along the press-in direction 18, so that the leg width along the press-in direction 18 largely decreases.
  • the outer side 42 initially approaches the inner side with a greater incline, which flattens out the closer it approaches the cutting edge 20 .
  • the outside 42 in the example shown in FIG. 4 has an outer contour in the clamping area 22 which has a concave shape.
  • the leg 24 has an outwardly extending extension, from which the outside 42 approaches the inside 30 again along the press-in direction 18 up to the free end 26 .
  • the outside 42 in the example shown in FIG. 4 has an outer contour which is S-shaped or has an S-shape along the press-in direction 18, in particular between the clamping base 28 and the free end 26.
  • the cutting edge 20 is advantageously formed by a constriction 44 of the leg 24 .
  • the constriction 44 is a recess of the leg 24 which extends largely perpendicularly to the press-in direction 18 or with the cutting angle 36 from the inside 30 into the leg 24 .
  • a third leg width 46 at the constriction is 46% of the first leg width 38.
  • the third leg width is 4644% of the first leg width 38.
  • a longitudinal extension 48 of the clipping element 10 against the press-in direction 18 is 65% of the first leg width 38.
  • the longitudinal extension 48 of the clipping element 10 against the press-in direction 18 is 71% the first leg width 38.
  • the longitudinal extension 48 of the cutting and clamping element 10 is 125% of the first leg width 38 in the opposite direction to the pressing-in direction 18.
  • each leg 24 or its inner side 30 in the forming region 12 or a forming surface 32 together with the press-in direction 18 encloses half a forming opening angle 50 .
  • the forming opening angle 50 is 14°.
  • the forming opening angle 50 is 18° for clarification.
  • a leg 24 or an inner side 30 of the leg 24 together with the press-in direction 18 enclose a catch opening angle 52 .
  • the catch opening angle 52 is 40°.
  • the catch opening angle 52 is 41°.
  • FIG. 6 shows a further variant of a cutting and clamping element 10 according to the present invention.
  • the legs 24 have centering shoulders 54 on their free ends 26 or on the catch area 16 .
  • the two centering shoulders 54 are each formed on the outer side 42 of the legs 24 and extend outwards largely perpendicularly to the press-in direction 18.
  • the legs 24 each have a fourth leg width 56 of 60% of the first leg width 38 at their respective centering shoulders 54 on.
  • FIG. 7 shows a further variant with a centering step 54.
  • the fourth leg width 56 is, for example, 70% of the first leg width 38.
  • the inside 30 of the leg 24 in the clamping area 22 is advantageously aligned largely along the press-in direction 18 in these embodiments.
  • a clamping step 58 is arranged on the inside 30 of the leg 24 between the clamping region 22 and the cutting edge 20 .
  • the leg 24 or an inner side 30 of the leg 24 encloses a stepped opening angle 60 together with the press-in direction 18 .
  • the stepped opening angle 60 is 16°.
  • the stepped opening angle 60 is 18°, for example.
  • a transition region 62 is arranged between the clamping step 58 and the cutting edges 20.
  • the legs 24 or the inner sides 30 of the legs extend essentially along the press-in direction 18 or largely parallel to the press-in direction 18.
  • Transition length 64 which is 16% of the first leg width 38.
  • the transition length 64 of the transition area 62 is 20% of the first leg width 38.
  • FIG. 7 shows an advantageous variant of the clip-on element 10, wherein the clip-on element 10 has a main latching hook 66 and a secondary latching hook 68 formed on each of its two opposite outer sides 42.
  • the two main latching hooks 66 and secondary latching hooks 68 are advantageously formed on the base section 70 or arranged above the clamping base 28 counter to the press-in direction 18 .
  • the main locking hook 66 on the first outer side 42 is advantageously arranged opposite the main locking hook 66 on the second outer side 42 .
  • the secondary latching hook 68 on the first outer side 42 is advantageously arranged opposite the main latching hook 68 on the second outer side 42 .
  • a latching hook on the first outer side 42 is arranged opposite the latching hook on the second outer side 42 should be understood in particular to mean that the two latching hooks are each arranged at largely the same height with respect to the press-in direction.
  • the main latching hooks 66 and/or secondary latching hooks 68 are mirror-symmetrical to one another with respect to the imaginary center line 34 of the cutting-and-clamping element 10 .
  • the main locking hook 66 is advantageously arranged on the outside 42 in each case next to an associated secondary locking hook 68 .
  • each of the main latching hooks 66 is arranged in front of the associated secondary latching hook 68 in the press-in direction 18 .
  • the main locking hook 66 is further away from the clamping base 28 along the press-in direction 18 than the secondary locking hook 68.
  • the main latching hook 66 has a greater extent perpendicular to the press-in direction 18 than the secondary latching hook 68.
  • the secondary latching hook 68 has a greater extent perpendicular to the press-in direction 18 than the secondary latching hook 68.
  • FIG. 8 illustrates the functional principle of the clip-on element 10 according to the present invention.
  • a variant of the cutting-and-clamping element 10 is shown, which largely corresponds to the embodiment shown in FIG. FIG. 8 shows a point in time when the cutting-and-clamping element 10 is being pressed onto a wire 14, at which point the wire 14 contacts the deformed region 12 and is deformed by being pressed in.
  • the legs 24 in the forming area 12 are spread outwards to a much greater extent.
  • the legs 24 taper in the press-in direction 18 and, for example, have a constriction 44 on the cutting edge 20 , the legs 24 are designed to be significantly more flexible or elastic at their free end 26 . In this way, when a larger wire 14 is accommodated in the forming area 12 , the limbs 24 are largely deformed without the distance between the limbs 24 changing in the press-in area 22 or on the clamping base 28 and on the cutting edge 20 . In this way, a precise cut at the correct distance and a secure clamping of the wire 14 can always be guaranteed.
  • FIG. 9 illustrates the geometry of the cutting edges 20 by way of example.
  • FIG. 9a) shows a view of the cutting edges 20 from FIG. 6 along the line IX-IX, with a wire 14 already being installed in the cutting and clamping element.
  • the wire 14 is a copper wire 78 coated with a layer of lacquer 76.
  • FIG. 9a) shows a preferred embodiment in which the cutting edges 20 are designed as scraping edges. By way of example, the scraping edges have a largely rectangular cross-sectional shape. When the wire 14 is inserted, its surface is scraped off by the scraping edge and a defined chip is removed from the wire 14 .
  • the scraping edges have completely removed the lacquer layer 76 in the contact area with the wire 14 and have removed a surface area of the copper wire 78, so that the scraping edge contacts the copper wire 78 along its entire thickness. This enables a particularly good electrical contact. In addition, a reliable mechanical fixing or clamping of the wire is also possible.
  • FIG. 9b shows an alternative form of the cutting edges 20, here they are in the form of blades.
  • the two surfaces of the blades converge towards the inside, so that the thickness of the blades decreases further towards the inside.
  • the blades of the embodiment example have a triangular shape. Blades have the advantage that, in contrast to scraping edges, they do not scrape the wire but rather cut it, which requires less effort.
  • the material of the wire is at least partially displaced by the blade when cutting.

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  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un élément de déplacement d'isolation (10), en particulier pour la mise en contact électrique de fils (14), en particulier dans une machine électrique, l'élément de déplacement d'isolation (10) est en forme de fourche et comporte deux branches (24) qui sont configurées pour la réception conjointe d'un fil (14) les deux branches (24) étant reliées l'une à l'autre par l'intermédiaire d'une base de serrage (28), et les branches (24) s'étendant dans chaque cas le long d'une direction d'enfoncement (18) les branches (24) présentant un bord de découpe (20) dans chaque cas sur leurs côtés intérieurs (30), et les deux branches (24) présentant sur leurs côtés intérieurs (30), une zone de déformation (12) qui est disposée dans le sens de la pression (18) entre les bords de découpe (20) et les extrémités libres (26) des deux branches (24), la zone de déformation (12) étant disposées pour la déformation plastique de fils (14) et présente deux surfaces de déformation (32) qui s'amincissent l'une vers l'autre dans la direction des arêtes de découpe (20) sur les côtés intérieurs (30) des deux branches (24). Selon l'invention, les deux branches (24) s'amincissent au moins par endroits dans le sens de la pression (18) vers les extrémités libres (26).
PCT/EP2022/057747 2021-03-31 2022-03-24 Élément de déplacement d'isolation, stator de machine électrique et procédé de fabrication de stator WO2022207444A1 (fr)

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CN202280038934.7A CN117397126A (zh) 2021-03-31 2022-03-24 绝缘位移元件、定子、电机、以及用于制造定子的方法

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DE102021203309.1A DE102021203309A1 (de) 2021-03-31 2021-03-31 Scheid-Klemm-Element, Stator elektrisch Maschine und Verfahren zur Herstellung eines Stators
DE102021203309.1 2021-03-31

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WO2022207444A1 true WO2022207444A1 (fr) 2022-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116826414A (zh) * 2023-07-21 2023-09-29 国网山东省电力公司临沭县供电公司 带检测功能的接地线装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033905A1 (de) * 2008-07-18 2010-01-21 Wago Verwaltungsgesellschaft Mbh Leiteranschlusselement
DE202010016199U1 (de) * 2010-12-03 2011-02-17 Ya Horng Electronic Co., Ltd., Antin Shiang Elektrischer Verbinder für einen Motorstator
KR20160126875A (ko) * 2015-04-24 2016-11-02 엘에스엠트론 주식회사 케이블 커넥터
DE102017210811A1 (de) 2017-06-27 2018-12-27 Robert Bosch Gmbh Schneidklemme und Kontaktanordnung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033905A1 (de) * 2008-07-18 2010-01-21 Wago Verwaltungsgesellschaft Mbh Leiteranschlusselement
DE202010016199U1 (de) * 2010-12-03 2011-02-17 Ya Horng Electronic Co., Ltd., Antin Shiang Elektrischer Verbinder für einen Motorstator
KR20160126875A (ko) * 2015-04-24 2016-11-02 엘에스엠트론 주식회사 케이블 커넥터
DE102017210811A1 (de) 2017-06-27 2018-12-27 Robert Bosch Gmbh Schneidklemme und Kontaktanordnung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116826414A (zh) * 2023-07-21 2023-09-29 国网山东省电力公司临沭县供电公司 带检测功能的接地线装置

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CN117397126A (zh) 2024-01-12

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