EP3153617B1 - Sewing needle and sewing method - Google Patents

Sewing needle and sewing method Download PDF

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Publication number
EP3153617B1
EP3153617B1 EP15188948.2A EP15188948A EP3153617B1 EP 3153617 B1 EP3153617 B1 EP 3153617B1 EP 15188948 A EP15188948 A EP 15188948A EP 3153617 B1 EP3153617 B1 EP 3153617B1
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EP
European Patent Office
Prior art keywords
needle
chamfer
region
longitudinal direction
groove
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.)
Active
Application number
EP15188948.2A
Other languages
German (de)
French (fr)
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EP3153617A1 (en
Inventor
Bernd Hillenbrand
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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
Priority to PL15188948T priority Critical patent/PL3153617T3/en
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP15188948.2A priority patent/EP3153617B1/en
Priority to KR1020187012543A priority patent/KR102556570B1/en
Priority to PCT/EP2016/071998 priority patent/WO2017060056A1/en
Priority to BR112018006708-3A priority patent/BR112018006708B1/en
Priority to US15/767,097 priority patent/US10753024B2/en
Priority to CN201680058199.0A priority patent/CN108368659B/en
Priority to JP2018517369A priority patent/JP6892442B2/en
Priority to EP16769955.2A priority patent/EP3359720B1/en
Priority to PL16769955T priority patent/PL3359720T3/en
Priority to TW105132297A priority patent/TWI700409B/en
Publication of EP3153617A1 publication Critical patent/EP3153617A1/en
Application granted granted Critical
Publication of EP3153617B1 publication Critical patent/EP3153617B1/en
Priority to HK18113593.4A priority patent/HK1254626A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles
    • D05B85/02—Needles with slotted eyes, i.e. with a slit leading to the eye for thread insertion
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles

Definitions

  • the invention relates to a sewing machine needle and a sewing method. Sewing machine needles and sewing methods are known in different variants.
  • the EP1052324A2 shows an initially flat groove, which is rounded in order to prevent sharp edges in the groove damage the fabric.
  • the result is a groove geometry on average, which has no or a very large rounding radius in the vicinity of the needle center. In the vicinity of the side edges is a significantly smaller radius of curvature, resulting in even clear side surfaces with an orientation parallel to a line 9 in the eye direction.
  • the US3589428A shows a manufacturing method for a sewing needle, in which a flattened area is prepared before the introduction of the channel.
  • the illustrated needle has no groove.
  • the DE3027534A1 shows a sewing needle, in which the shaft is offset parallel in the region of the groove compared to the rest of the shaft region. By this offset creates a groove, in which the space between the sewing thread and needle is increased. As a result, the loop recording is simplified by a gripper. Due to the offset of the shank, when the needle retracts, an additional load on the material is created by the transition to the offset area of the shank.
  • the cross-sectional area of the needle in the offset area corresponds to the cross-sectional area of the needle in the adjacent shaft or is only slightly reduced. Identical solutions and similar differences to the present invention are in US4458614A and EP1052323A2 shown.
  • the DE69220550T3 shows a manufacturing method for a sewing machine needle, which produces a sewing needle as a result, in which the groove has a reduced width.
  • the needle should have an improved penetration resistance.
  • Object of the present invention is to provide a sewing machine needle, which has an increased reliability during sewing.
  • Another object of the present invention is a sewing method that is less susceptible to interference.
  • the object is achieved by a sewing machine needle according to claim 1 and a sewing method according to claim 9.
  • the sewing machine needle according to the invention generally has at one of its two ends in the longitudinal direction of a needle piston, with which the sewing machine needle is clamped in a sewing machine. Through the center axis of the usually cylindrical needle piston, the center axis of the sewing machine needle is defined. At the other end of the sewing machine needle in the longitudinal direction of a tip is formed, with which the needle pierces the sewing material during sewing. Directly adjacent to the top is the eye into which the suture thread has entered. Between the eye and the needle piston extends the needle shaft, which accounts for a large part of the length of the sewing machine needle. Transition areas can each be located between the aforementioned areas.
  • the eye essentially passes through the needle in one direction, which is called height direction.
  • the height direction is perpendicular to the longitudinal direction of the sewing machine needle.
  • the longitudinal direction points from the rear needle piston to the tip at the front end of the sewing machine needle.
  • the longitudinal direction is usually parallel to the central axis.
  • the direction perpendicular to the two aforementioned directions is referred to as the width direction.
  • the eye In the area of the needle shaft, the eye is longitudinally preceded by a groove.
  • the contour of the groove jumps back in the height direction with respect to the contour of the needle shaft.
  • the height direction thus points from the middle of the needle over the groove to the outside in such a way that the values continue to grow outside the groove.
  • a recessed area on a sewing machine needle is designated, which is adapted to provide an engagement space for a gripper, in which the sewing thread is not applied directly to the needle, because there are adjacent areas on the shaft and the eye, in the height direction on the groove lie.
  • the groove extends from the immediate vicinity of the eye over a portion of the longitudinal extent of the needle shaft.
  • the sewing machine needle has in the region of the groove in a sectional plane perpendicular to the longitudinal direction or in all cutting planes in the region of the groove - except transition areas - a substantially circular arc-shaped contour.
  • a substantially circular arc-shaped contour directly adjacent to an axis of symmetry which runs in the sectional plane through the central axis of the needle and in the vertical direction, there are no straight, flat sections, but it extends in both orientations of the width direction from the center of the groove starting an at least approximately circular arc-shaped contour path.
  • at least no distinct plateau is formed in this cutting plane at the location farthest from the central axis of the needle in the height direction.
  • Deviations from the circular shape are permissible inasmuch as due to these deviations in order to comply with the geometrical conditions with regard to heights and widths necessary for the sewing process, no kinks or sharp edges occur in the groove.
  • the circular-arc-shaped region of the contour of the groove covers a first angle section of the needle circumference.
  • the first angle section preferably extends on both sides of an axis of symmetry which is defined in the sectional plane by the center axis of the sewing machine needle and the height direction. At this first angle section can connect more angular ranges that complete the contour of the fillet.
  • the contour of the groove or the sum of angles of the angular ranges, from which the contour of the groove is formed covers half, ie 180 °, of the entire circumference of the needle.
  • the vertex of the angular ranges is determined by the intersection of the axis of symmetry, which lies in the height direction, with a distance in Widthwise direction and is located at the point of maximum extension of the needle in the width direction in the region of the groove.
  • the radius of curvature of the substantially circular arc-shaped contour of the needle in the region of the groove is for example about 50% of the maximum extent of the needle in the region of the groove in the width direction and is between 45% and 60% of the maximum extension of the needle in the region of the groove in the width direction.
  • This special choice of the radius of curvature creates a shape of the groove, which is particularly well suited for a secure takeover of the sewing thread by a gripper element.
  • Grippers are usually adjusted during sewing so that the sewing machine needle and gripper do not touch each other. Due to the return stroke of the sewing machine needle, the sewing thread forms a loop which the gripper can take up in interaction with the groove.
  • the gripper performs at least temporarily a movement that also contains components in the width direction of the sewing machine needle and with which the gripper of the sewing machine needle also approaches in the width direction. For example, due to vibrations in the sewing machine, heavy thread tension, poor setting of the sewing machine or other shortcomings, it may happen that the sewing machine needle and the gripper touch each other. If the groove is at a uniform level in the height direction, the gripper beats in such a case against a standing at least approximately perpendicular to the direction of movement of the gripper side surface of the sewing machine needle, which inevitably has a groove with plateau. As a result of such striking, damage to the sewing machine needle and / or the gripper may occur in addition to sewing errors. Due to the inventive contour of the groove, the sewing machine needle in the region of its groove offers the gripper in the event of contact surface areas, which have an angular position, which preferably divert the gripper in the right direction and avoid a dull clashing.
  • the essentially circular-arc-shaped contour of the needle in the region of the groove can extend at least over an angular range of 90 °.
  • the radius can cover an angle range of at least 100 °.
  • the radius can cover an angle range of at least 110 °.
  • the maximum extent of the contour of the needle in the region of the groove in the height direction can preferably amount to a maximum of 65% of the maximum extent of the contour of the needle in the region of the groove in the width direction.
  • the maximum height of the needle can be measured between two parallels to the width direction, when the first touches the two gutter edges tangentially and the second tangent to the groove.
  • the maximum height of the needle in the fillet can be between 60% and 70% of its maximum width in the fillet.
  • the maximum height of the needle in the groove is between 55% and 75% of its maximum width in the groove.
  • the needle can reach its maximum extent in the width direction in the region of the groove, preferably below a central axis, in particular at 32% of its maximum extent in the height direction measured from the side facing away from the groove.
  • the maximum width of the needle can be reached between 30% and 35% of the height.
  • the maximum width of the needle can be reached between 25% and 40% of the height.
  • the cross-sectional area of the needle in the region of the extension of the groove in the longitudinal direction of the sewing machine needle may be 70% of the smallest cross-sectional area perpendicular to the longitudinal direction in the region of the remaining needle shaft.
  • the cross-sectional area in the groove may be between 65% and 75% of the cross-sectional area of the remaining needle shank.
  • the cross-sectional area in the groove is between 60% and 80% of the cross-sectional area of the remaining needle shank. Due to the appropriately selected cross-sectional area in the area of the groove, the demands on the strength of the needle and the requirements on the geometry of the needle, which can be used for a safe sewing process and are necessary for the protection of the sewing material, coordinated and optimized.
  • the needle according to the invention may have a constant cross-sectional area in partial sections of the course of the longitudinal extent of the needle shaft or may be tapered at least in sections in the direction of the needle tip. Such a taper can then be designed in such a way that the contour is retained in the shape and is continuously scaled by only one factor during the course of the longitudinal extension.
  • a tapered portion may be present in the region of the groove and / or in the course of the remaining needle shaft.
  • the largest cross-sectional area of the groove at its end towards the remainder of the shank may preferably be 65% of the smallest cross-sectional area of the shank at its end towards the groove ,
  • the maximum extent of the needle in the region of the groove in the width direction can correspond substantially to the maximum extension of the needle in the region of the remaining shaft.
  • the needle shaft has a long groove which extends substantially in the longitudinal direction of the needle.
  • the groove and the long groove are located on opposite sides of the needle shaft with respect to the height direction.
  • the long groove preferably extends substantially over the entire longitudinal extent of the needle shaft from the transition to the needle piston to the eye.
  • the long channel runs advantageously over its entire extent in the longitudinal direction and in particular in the region of the groove substantially parallel and at a constant distance from the central axis of the sewing machine needle. This design is again gentle on the sewing material. Long troughs serve to protect the sewing thread when piercing the sewing material. In principle, this function is also fulfilled by long channels, which have different distances to the central axis over their longitudinal extent.
  • Such elongated troughs then have transitional areas between the longitudinal sections of the elongated troughs located at different heights, which can damage the sewing material during insertion or even during retraction.
  • it should be interpreted essentially parallel and at a constant distance from the central axis so that the groove edges can be slightly lowered in the region of the groove inwards, which can then apply correspondingly to the groove bottom.
  • the channel bottom in the region of the groove can also be raised slightly in relation to the channel bottom in the region of the remaining shaft.
  • the deviation of the channel that is the channel edge and / or the channel bottom, from the parallelism of the central axis or the deviation of the distance of the channel edges and / or channel bottom to the central axis in the region of the groove to the remaining shaft is then a maximum of 10% of a mean width of the shaft.
  • the deviation of the groove from the parallelism or the deviation of the distance of the groove from the central axis can amount to a maximum of 5% of a mean width of the shank.
  • the deviation of the groove from the parallelism or the deviation of the distance of the groove from the central axis can amount to a maximum of 2% of a mean width of the shank.
  • the shaft may have a groove in the longitudinal direction following the groove. This channel is often called a short channel.
  • the short groove can reach from the groove to the piston. Between the groove and the short groove, a region raised in relation to the groove can also be present. As described earlier, such a raised area serves to allow the thread in the groove to be well received by a gripper member. All embodiments of a sewing needle according to the invention may have such a short groove.
  • the contour of the needle in the region of the longitudinal extent of the groove in the cross-sectional view, which results in a section perpendicular to the longitudinal extent of the needle, in addition to the first angle portion have at least a second angle portion which extends straight and a third angle portion, the connects the first and the second angle section.
  • the third section connects the other two sections kink-free.
  • the straight section is preferably made short and preferably present on both sides in the width direction.
  • the straight section can be at an angle of 18 ° to the vertical direction.
  • the straight section can be at an angle of 15 ° to 21 ° to the height direction.
  • the straight section can be at an angle of 12 ° to 24 ° to the vertical direction.
  • the third angle section leads the radius of curvature of the first angle section tangentially without kinks into the straight section of the second angle section.
  • At least the contour of the third angular region that is to say the transition between the first and second angular region, has an angular position with respect to a possibly impinging gripper, which makes it possible for both parts, despite contact, to continue the sewing process without damage.
  • the angle of the straight section which sweeps over the second angle section in the region of the groove, can be made variable in the further course in the region of the shaft.
  • the angle may increase in the direction of the needle piston, for example from 30 ° to 36 °.
  • the increase of the angle can also be done by a different amount, as well as the angle of the shaft adjacent to the groove may have an amount other than 30 °, depending on how the groove is designed.
  • the sewing machine needle can be embodied in the region of the extension of the groove in the longitudinal extension of the needle in the sectional plane perpendicular to the longitudinal direction with mirror symmetry to an axis of symmetry which is defined by the height direction and the central axis.
  • the sewing machine needle can be used both in sewing machines, in which the gripper from the left as well as in sewing machines, in which the gripper engages from the right side of the needle into the groove.
  • the needle can thus be used in machines or applications in which a chamfer is required in the groove.
  • the contour of the groove of the sewing machine needle according to the invention makes the execution of an additional bevel in the groove superfluous.
  • the symmetry may preferably also apply to the long trough.
  • the center of the long trough then lies on the symmetry axis as well as the point of the circular arc of the contour of the groove on which a parallel tangential to the width direction.
  • all first, second and third angular ranges are arranged mirror-symmetrically.
  • FIG. 1 The sewing machine needle 1 extends in the longitudinal direction L of an end-side needle piston 4 via the shaft 5 and via the eye 6 to the top 7.
  • the portion 9 of the groove 10, which differs from the immediate vicinity of the eyelet 6 extends over a portion of the longitudinal extent of the needle shaft 5 is also indicated.
  • the remaining area 12 of the needle shaft 5 is indicated.
  • the contour 11, which results in a sectional plane which is perpendicular to the longitudinal direction L and the partial region 9 of the groove 10, can be roughly recognized. For orientation, the longitudinal direction L, the width direction B and the height direction H are drawn.
  • FIG. 2 shows a sewing machine needle 1 according to the invention in a simplified oblique view of the long trough 8. Except for the groove 10, the individual sections of the longitudinal extent of the sewing machine needle 1 are also given here. In particular, it can be seen that the long channel 8 including its edges, which protect the sewing thread, not shown, when sewing, has a straight course without steps.
  • FIG. 3 shows a representation of the contour 11 of the sewing machine needle 1 according to the invention in section in the groove 10 from FIG. 1 ,
  • the cut can At any point of the portion 9 of the groove 10 have come about. Excluded hereof are the transition regions of the portion 9 of the groove 10 to the eye 6 and the remaining portion 12 of the needle shaft 5.
  • the groove 10 is in this illustration above, the long groove 8 below.
  • the rounding radius r is shown as an arrow line.
  • the angular ranges w1, w2 and w3 are indicated by dashed lines.
  • a coordinate system is indicated, which indicates the width direction B and the height direction H.
  • the longitudinal direction L is perpendicular to the plane of the drawing.
  • the maximum extent b of the sewing machine needle 1 in the partial region 9 of the groove 10 can be seen parallel to the width direction B.
  • the center axis M runs in this representation perpendicular to the plane and is defined by the intersection of the two lines drawn with breaks, of which the one parallel to the height direction H is provided with the reference symbol S.
  • the contour 11 of the sewing machine needle 1 in the portion 9 of the groove 10 is mirror-symmetrical to the symmetry axis S.
  • the vertex of the angular ranges w1, w2 and w3 is the intersection of the axis of symmetry S with the parallels to the width direction B, on which the maximum extension b of the needle lies in the width direction.
  • the distance I of the long channel 8 to the central axis M is shown by an arrow.
  • a transition 13 and a straight portion 14 are shown on the left side of the contour 11.
  • the transition 13 connects the straight section 14 kink-free with the substantially circular arc-shaped contour of the first angle section w1.
  • FIG. 4 shows a representation of the contour of the sewing machine needle 1 according to the invention in section in the needle shaft 5. Also, this contour can arise at any point of the needle shaft 5, the contour deviate again in transition areas.
  • the coordinate system with the width direction B and the height direction H is again indicated for orientation.
  • the contour is in turn mirror-symmetrical to the axis S, which passes through the central axis M and parallel to the height direction H.
  • the maximum extent bs of the sewing machine needle 1 in the remaining area 12 of the shaft 5 in the width direction B is shown. This corresponds to the maximum extent b of the sewing machine needle 1 in the portion 9 of the groove 10 in the width direction B from FIG.
  • the maximum extension bs may deviate from the maximum extent b if, for example, the needle is conical.

Description

Die Erfindung betrifft eine Nähmaschinennadel und ein Nähverfahren. Nähmaschinennadeln und Nähverfahren sind in verschiedenen Varianten bekannt.The invention relates to a sewing machine needle and a sewing method. Sewing machine needles and sewing methods are known in different variants.

Die EP1052324A2 zeigt eine zunächst flache Hohlkehle, die verrundet wird, um zu verhindern, dass scharfe Kanten in der Hohlkehle das Nähgut schädigen. Im Ergebnis ergibt sich im Schnitt eine Hohlkehlgeometrie, die in der Nähe der Nadelmitte keinen oder einen sehr großen Verrundungsradius aufweist. In der Nähe der Seitenkanten liegt ein deutlich kleinerer Verrundungsradius vor, wodurch sich noch deutliche Seitenflächen mit einer Orientierung parallel zu einer Linie 9 in Öhrrichtung ergeben.The EP1052324A2 shows an initially flat groove, which is rounded in order to prevent sharp edges in the groove damage the fabric. The result is a groove geometry on average, which has no or a very large rounding radius in the vicinity of the needle center. In the vicinity of the side edges is a significantly smaller radius of curvature, resulting in even clear side surfaces with an orientation parallel to a line 9 in the eye direction.

Die US3589428A zeigt ein Herstellungsverfahren für eine Nähnadel, bei dem vor dem Einbringen der Rinne ein abgeflachter Bereich hergestellt wird. Die dargestellte Nadel weist keine Hohlkehle auf.The US3589428A shows a manufacturing method for a sewing needle, in which a flattened area is prepared before the introduction of the channel. The illustrated needle has no groove.

Die DE3027534A1 zeigt eine Nähnadel, bei der der Schaft im Bereich der Hohlkehle im Vergleich zum restlichen Schaftbereich parallel versetzt ist. Durch diesen Versatz entsteht eine Hohlkehle, in der der Freiraum zwischen Nähfaden und Nadel vergrößert ist. Dadurch wird die Schlingenaufnahme durch einen Greifer vereinfacht. Durch den Versatz des Schaftes entsteht beim Rückzug der Nadel eine zusätzliche Belastung für das Nähgut durch den Übergang in den versetzten Bereich des Schaftes. Die Querschnittsfläche der Nadel in dem versetzten Bereich entspricht der Querschnittsfläche der Nadel im angrenzenden Schaft oder ist nur unwesentlich verringert. Identische Lösungen und gleiche Unterschiede zur vorliegenden Erfindung sind in US4458614A und EP1052323A2 gezeigt.The DE3027534A1 shows a sewing needle, in which the shaft is offset parallel in the region of the groove compared to the rest of the shaft region. By this offset creates a groove, in which the space between the sewing thread and needle is increased. As a result, the loop recording is simplified by a gripper. Due to the offset of the shank, when the needle retracts, an additional load on the material is created by the transition to the offset area of the shank. The cross-sectional area of the needle in the offset area corresponds to the cross-sectional area of the needle in the adjacent shaft or is only slightly reduced. Identical solutions and similar differences to the present invention are in US4458614A and EP1052323A2 shown.

Die DE69220550T3 zeigt ein Herstellungsverfahren für eine Nähmaschinennadel, das im Ergebnis eine Nähnadel erzeugt, bei der die Hohlkehle eine reduzierte Breite aufweist. Die Nadel soll einen verbesserten Eindringwiderstand aufweisen.The DE69220550T3 shows a manufacturing method for a sewing machine needle, which produces a sewing needle as a result, in which the groove has a reduced width. The needle should have an improved penetration resistance.

Aufgabe der vorliegenden Erfindung ist es eine Nähmaschinennadel anzugeben, die eine erhöhte Funktionssicherheit beim Nähen aufweist. Weiterer Gegenstand der vorliegenden Erfindung ist ein Nähverfahren, das weniger störanfällig ist.Object of the present invention is to provide a sewing machine needle, which has an increased reliability during sewing. Another object of the present invention is a sewing method that is less susceptible to interference.

Die Aufgabe wird gelöst durch eine Nähmaschinennadel nach Anspruch 1 und ein Nähverfahren nach Anspruch 9.The object is achieved by a sewing machine needle according to claim 1 and a sewing method according to claim 9.

Die erfindungsgemäße Nähmaschinennadel weist in der Regel an einem ihrer beiden Enden in Längsrichtung einen Nadelkolben auf, mit dem die Nähmaschinennadel in einer Nähmaschine eingespannt wird. Durch die Mittelachse des in der Regel zylindrischen Nadelkolbens ist die Mittelachse der Nähmaschinennadel definiert. Am anderen Ende der Nähmaschinennadel in Längsrichtung ist eine Spitze angeformt, mit der die Nadel beim Nähen das Nähgut durchsticht. Direkt angrenzend an die Spitze befindet sich das Öhr, in das der Nähfaden eingezogen ist. Zwischen dem Öhr und dem Nadelkolben erstreckt sich der Nadelschaft, der einen großen Teil der Längserstreckung der Nähmaschinennadel ausmacht. Zwischen den vorgenannten Bereichen können sich jeweils Übergangsbereiche befinden.The sewing machine needle according to the invention generally has at one of its two ends in the longitudinal direction of a needle piston, with which the sewing machine needle is clamped in a sewing machine. Through the center axis of the usually cylindrical needle piston, the center axis of the sewing machine needle is defined. At the other end of the sewing machine needle in the longitudinal direction of a tip is formed, with which the needle pierces the sewing material during sewing. Directly adjacent to the top is the eye into which the suture thread has entered. Between the eye and the needle piston extends the needle shaft, which accounts for a large part of the length of the sewing machine needle. Transition areas can each be located between the aforementioned areas.

Das Öhr durchgreift die Nadel im Wesentlichen in einer Richtung, die als Höhenrichtung bezeichnet wird. Die Höhenrichtung steht senkrecht auf der Längsrichtung der Nähmaschinennadel. Die Längsrichtung weist vom hinten liegenden Nadelkolben zur Spitze am vorderen Ende der Nähmaschinennadel. Die Längsrichtung ist in der Regel parallel zur Mittelachse. Die Richtung senkrecht zu den beiden vorgenannten Richtungen wird als Breitenrichtung bezeichnet.The eye essentially passes through the needle in one direction, which is called height direction. The height direction is perpendicular to the longitudinal direction of the sewing machine needle. The longitudinal direction points from the rear needle piston to the tip at the front end of the sewing machine needle. The longitudinal direction is usually parallel to the central axis. The direction perpendicular to the two aforementioned directions is referred to as the width direction.

Im Bereich des Nadelschafts ist dem Öhr in Längsrichtung eine Hohlkehle vorgelagert. Die Kontur der Hohlkehle springt gegenüber der Kontur des Nadelschaftes in Höhenrichtung zurück. Die Höhenrichtung zeigt also von der Nadelmitte über die Hohlkehle nach außen in der Weise, dass die Werte außerhalb der Hohlkehle weiter anwachsen. Im Bereich der Hohlkehle wird beim Nähen, wenn die Nähmaschinennadel das Nähgut durchstochen hat, der Nähfaden von einem Greiferelement aufgenommen und beim Rückhub der Nadel auf der entsprechenden Seite des Nähguts gehalten. Um die Übernahme durch das Greiferelement sicherer zu gestalten, weist die Nähmaschinennadel eine Hohlkehle auf. Als Hohlkehle wird ein zurückgesetzter Bereich an einer Nähmaschinennadel bezeichnet, der dazu eingerichtet ist, einen Eingriffraum für einen Greifer zu schaffen, in dem der Nähfaden nicht direkt an der Nadel anliegt, weil angrenzende Bereiche am Schaft und am Öhr vorliegen, die in der Höhenrichtung über der Hohlkehle liegen. Die Hohlkehle erstreckt sich von der unmittelbaren Nähe des Öhrs über einen Teilbereich der Längserstreckung des Nadelschafts.In the area of the needle shaft, the eye is longitudinally preceded by a groove. The contour of the groove jumps back in the height direction with respect to the contour of the needle shaft. The height direction thus points from the middle of the needle over the groove to the outside in such a way that the values continue to grow outside the groove. When sewing, when the sewing machine needle has pierced the sewing material, the sewing thread is received by a gripper element in the region of the groove and on the return stroke of the needle on the corresponding Side of the sewing material held. To make the acquisition by the gripper element safer, the sewing machine needle has a groove. As a groove, a recessed area on a sewing machine needle is designated, which is adapted to provide an engagement space for a gripper, in which the sewing thread is not applied directly to the needle, because there are adjacent areas on the shaft and the eye, in the height direction on the groove lie. The groove extends from the immediate vicinity of the eye over a portion of the longitudinal extent of the needle shaft.

Die Nähmaschinennadel weist im Bereich der Hohlkehle in einer Schnittebene senkrecht zur Längsrichtung bzw. in allen Schnittebenen im Bereich der Hohlkehle - ausgenommen Übergangsbereiche - einen im Wesentlichen kreisbogenförmigen Konturverlauf auf. Insbesondere liegen direkt angrenzend an eine Symmetrieachse, die in der Schnittebene durch die Mittelachse der Nadel und in Höhenrichtung läuft, keine geraden, flachen Abschnitte vor, sondern es erstreckt sich in beiden Orientierungen der Breitenrichtung von der Mitte der Hohlkehle ausgehend eine zumindest annähernd kreisbogenförmig verlaufende Kontur weg. Somit bildet sich in dieser Schnittebene zumindest kein ausgeprägtes Plateau an der in Höhenrichtung am weitesten von der Mittelachse der Nadel entfernten Stelle aus. In diesem Sinne ist in dieser Schrift im Wesentlichen kreisbogenförmig zu verstehen. Abweichungen von der Kreisform sind insoweit zulässig, dass durch diese Abweichungen zur Einhaltung der für den Nähprozess nötigen geometrischen Verhältnisse bezüglich Höhen und Breiten keine Knicke bzw. scharfe Kanten in der Hohlkehle auftreten.The sewing machine needle has in the region of the groove in a sectional plane perpendicular to the longitudinal direction or in all cutting planes in the region of the groove - except transition areas - a substantially circular arc-shaped contour. In particular, directly adjacent to an axis of symmetry which runs in the sectional plane through the central axis of the needle and in the vertical direction, there are no straight, flat sections, but it extends in both orientations of the width direction from the center of the groove starting an at least approximately circular arc-shaped contour path. Thus, at least no distinct plateau is formed in this cutting plane at the location farthest from the central axis of the needle in the height direction. In this sense is to be understood in this document essentially circular arc. Deviations from the circular shape are permissible inasmuch as due to these deviations in order to comply with the geometrical conditions with regard to heights and widths necessary for the sewing process, no kinks or sharp edges occur in the groove.

Der kreisbogenförmige Bereich der Kontur der Hohlkehle überstreicht einen ersten Winkelabschnitt des Nadelumfangs. Der erste Winkelabschnitt erstreckt sich vorzugsweise auf beiden Seiten einer Symmetrieachse, die in der Schnittebene durch die Mittelachse der Nähmaschinennadel und die Höhenrichtung festgelegt ist. An diesen ersten Winkelabschnitt können weitere Winkelbereiche anschließen, die die Kontur der Hohlkehle vervollständigen. Insgesamt überdeckt die Kontur der Hohlkehle bzw. die Winkelsumme der Winkelbereiche, aus denen die Kontur der Hohlkehle gebildet ist, die Hälfte, also 180°, des gesamten Nadelumfangs. Der Scheitelpunkt der Winkelbereiche ist bestimmt durch den Schnittpunkt der Symmetrieachse, die in der Höhenrichtung liegt, mit einer Strecke, die in Breitenrichtung verläuft und an der Stelle der maximalen Erstreckung der Nadel in der Breitenrichtung im Bereich der Hohlkehle liegt.The circular-arc-shaped region of the contour of the groove covers a first angle section of the needle circumference. The first angle section preferably extends on both sides of an axis of symmetry which is defined in the sectional plane by the center axis of the sewing machine needle and the height direction. At this first angle section can connect more angular ranges that complete the contour of the fillet. Overall, the contour of the groove or the sum of angles of the angular ranges, from which the contour of the groove is formed, covers half, ie 180 °, of the entire circumference of the needle. The vertex of the angular ranges is determined by the intersection of the axis of symmetry, which lies in the height direction, with a distance in Widthwise direction and is located at the point of maximum extension of the needle in the width direction in the region of the groove.

Der Rundungsradius der im Wesentlichen kreisbogenförmigen Kontur der Nadel im Bereich der Hohlkehle beträgt beispielsweise ca. 50% der maximalen Erstreckung der Nadel im Bereich der Hohlkehle in der Breitenrichtung und beträgt zwischen 45% und 60% der maximalen Erstreckung der Nadel im Bereich der Hohlkehle in der Breitenrichtung. Durch diese spezielle Wahl des Rundungsradius entsteht eine Form der Hohlkehle, die besonders gut geeignet ist für eine sichere Übernahme des Nähfadens durch ein Greiferelement. Greifer werden beim Nähen in der Regel so eingestellt, dass sich Nähmaschinennadel und Greifer nicht berühren. Durch den Rückhub der Nähmaschinenadel bildet der Nähfaden eine Schleife, die der Greifer im Zusammenspiel mit der Hohlkehle aufnehmen kann. Der Greifer führt hierbei zumindest zeitweise eine Bewegung aus, die auch Komponenten in Breitenrichtung der Nähmaschinennadel enthält und mit der sich der Greifer der Nähmaschinennadel auch in der Breitenrichtung annähert. Zum Beispiel durch Vibrationen in der Nähmaschine, starken Fadenzug, schlechte Einstellung der Nähmaschine oder weitere Unzulänglichkeiten kann es aber dennoch vorkommen, dass sich die Nähmaschinenadel und der Greifer berühren. Liegt die Hohlkehle auf einem einheitlichen Niveau in der Höhenrichtung schlägt der Greifer in einem solchen Fall stumpf gegen eine zumindest annähernd senkrecht zur Bewegungsrichtung des Greifers stehende Seitenfläche der Nähmaschinennadel, die eine Hohlkehle mit Plateau zwangsläufig aufweist. Durch ein solches Anschlagen kann es außer zu Nähfehlern auch zu Beschädigungen an der Nähmaschinennadel und/oder am Greifer kommen. Durch die erfindungsgemäße Kontur der Hohlkehle bietet die Nähmaschinenadel im Bereich ihrer Hohlkehle dem Greifer für den Fall einer Berührung Oberflächenbereiche an, die eine Winkelstellung aufweisen, die den Greifer bevorzugt in die richtige Richtung ablenken und ein stumpfes Aneinanderschlagen vermeiden.The radius of curvature of the substantially circular arc-shaped contour of the needle in the region of the groove is for example about 50% of the maximum extent of the needle in the region of the groove in the width direction and is between 45% and 60% of the maximum extension of the needle in the region of the groove in the width direction. This special choice of the radius of curvature creates a shape of the groove, which is particularly well suited for a secure takeover of the sewing thread by a gripper element. Grippers are usually adjusted during sewing so that the sewing machine needle and gripper do not touch each other. Due to the return stroke of the sewing machine needle, the sewing thread forms a loop which the gripper can take up in interaction with the groove. The gripper performs at least temporarily a movement that also contains components in the width direction of the sewing machine needle and with which the gripper of the sewing machine needle also approaches in the width direction. For example, due to vibrations in the sewing machine, heavy thread tension, poor setting of the sewing machine or other shortcomings, it may happen that the sewing machine needle and the gripper touch each other. If the groove is at a uniform level in the height direction, the gripper beats in such a case against a standing at least approximately perpendicular to the direction of movement of the gripper side surface of the sewing machine needle, which inevitably has a groove with plateau. As a result of such striking, damage to the sewing machine needle and / or the gripper may occur in addition to sewing errors. Due to the inventive contour of the groove, the sewing machine needle in the region of its groove offers the gripper in the event of contact surface areas, which have an angular position, which preferably divert the gripper in the right direction and avoid a dull clashing.

Die im Wesentlichen kreisbogenförmige Kontur der Nadel im Bereich der Hohlkehle kann sich mindestens über einen Winkelbereich von 90° erstrecken. Der Radius kann einen Winkelbereich von mindestens 100° überdecken. Der Radius kann einen Winkelbereich von mindestens 110° überdecken. Durch die Überdeckung eines relativ großen Winkelbereichs wird sichergestellt, dass die in einem für den Greifer günstigen Winkel angeordneten Flächen der Hohlkehle ausreichend Reserve für das Eingreifen des Greifers bieten. Der an der Nadel vorhandene Bauraum wird so optimal ausgenutzt.The essentially circular-arc-shaped contour of the needle in the region of the groove can extend at least over an angular range of 90 °. The radius can cover an angle range of at least 100 °. The radius can cover an angle range of at least 110 °. By the cover a relatively large angular range ensures that arranged in a favorable angle for the gripper surfaces of the groove provide sufficient reserve for the intervention of the gripper. The available space at the needle space is thus optimally utilized.

Die maximale Erstreckung der Kontur der Nadel im Bereich der Hohlkehle in der Höhenrichtung kann vorzugsweise maximal 65% der maximalen Erstreckung der Kontur der Nadel im Bereich der Hohlkehle in der Breitenrichtung betragen. Die maximale Höhe der Nadel kann gemessen werden zwischen zwei Parallelen zur Breitenrichtung, wenn die erste die beiden Rinnenkanten tangential berührt und die zweite an der Hohlkehle tangential anliegt. Die maximale Höhe der Nadel in der Hohlkehle kann zwischen 60% und 70% deren maximalen Breite in der Hohlkehle liegen. Die maximale Höhe der Nadel in der Hohlkehle liegt zwischen 55% und 75% deren maximalen Breite in der Hohlkehle. Durch diese Geometrie der Hohlkehle kann die Nadel bei einer Kollision mit dem Greifer ausweichen, ohne beschädigt zu werden oder gar abzubrechen.The maximum extent of the contour of the needle in the region of the groove in the height direction can preferably amount to a maximum of 65% of the maximum extent of the contour of the needle in the region of the groove in the width direction. The maximum height of the needle can be measured between two parallels to the width direction, when the first touches the two gutter edges tangentially and the second tangent to the groove. The maximum height of the needle in the fillet can be between 60% and 70% of its maximum width in the fillet. The maximum height of the needle in the groove is between 55% and 75% of its maximum width in the groove. Through this geometry of the groove, the needle can escape in a collision with the gripper, without being damaged or even break off.

Die Nadel kann ihre maximale Erstreckung in der Breitenrichtung im Bereich der Hohlkehle vorzugsweise unterhalb einer Mittelachse erreichen, insbesondere bei 32% ihrer maximalen Erstreckung in Höhenrichtung gemessen von der der Hohlkehle abgewandten Seite. Die maximale Breite der Nadel kann zwischen 30% und 35% der Höhe erreicht werden. Die maximale Breite der Nadel kann zwischen 25% und 40% der Höhe erreicht werden. Durch diese Maßnahme werden die Seitenflächen, auf die ein Greifer unter ungünstigem Winkel anschlagen könnte, maximal reduziert.The needle can reach its maximum extent in the width direction in the region of the groove, preferably below a central axis, in particular at 32% of its maximum extent in the height direction measured from the side facing away from the groove. The maximum width of the needle can be reached between 30% and 35% of the height. The maximum width of the needle can be reached between 25% and 40% of the height. By this measure, the side surfaces on which a gripper could strike at an unfavorable angle, maximum reduced.

Die Querschnittsfläche der Nadel im Bereich der Erstreckung der Hohlkehle in Längsrichtung der Nähmaschinennadel kann 70% der kleinsten Querschnittsfläche senkrecht zur Längsrichtung im Bereich des restlichen Nadelschaftes betragen. Die Querschnittsfläche in der Hohlkehle kann zwischen 65% und 75% der Querschnittsfläche des restlichen Nadelschaftes betragen. Die Querschnittsfläche in der Hohlkehle beträgt zwischen 60% und 80% der Querschnittsfläche des restlichen Nadelschaftes. Durch die entsprechend gewählte Querschnittsfläche im Bereich der Hohlkehle können die Anforderungen an die Festigkeit der Nadel und die Anforderungen an die Geometrie der Nadel, die für einen sicheren Nähprozess und für die Schonung des Nähguts notwendig sind, aufeinander abgestimmt und optimiert werden.The cross-sectional area of the needle in the region of the extension of the groove in the longitudinal direction of the sewing machine needle may be 70% of the smallest cross-sectional area perpendicular to the longitudinal direction in the region of the remaining needle shaft. The cross-sectional area in the groove may be between 65% and 75% of the cross-sectional area of the remaining needle shank. The cross-sectional area in the groove is between 60% and 80% of the cross-sectional area of the remaining needle shank. Due to the appropriately selected cross-sectional area in the area of the groove, the demands on the strength of the needle and the requirements on the geometry of the needle, which can be used for a safe sewing process and are necessary for the protection of the sewing material, coordinated and optimized.

Die erfindungsgemäße Nadel kann in Teilabschnitten des Verlaufs der Längserstreckung des Nadelschafts eine konstante Querschnittsfläche aufweisen oder zumindest abschnittsweise in Richtung zur Nadelspitze sich verjüngend verlaufen. Eine solche Verjüngung kann dann so ausgeführt sein, dass die Kontur von der Form her erhalten bleibt und nur über einen Faktor im Verlauf der Längserstreckung kontinuierlich skaliert wird. Ein sich verjüngender Teilabschnitt kann im Bereich der Hohlkehle und/oder im Verlauf des restlichen Nadelschafts vorliegen. In dem Fall, dass sowohl der Schaft als auch die Hohlkehle nach vorne sich verjüngend verlaufen, kann die größte Querschnittsfläche der Hohlkehle an deren Ende in Richtung auf den restlichen Schaft vorzugsweise 65% der kleinsten Querschnittsfläche des Schaft an dessen Ende in Richtung auf die Hohlkehle betragen.The needle according to the invention may have a constant cross-sectional area in partial sections of the course of the longitudinal extent of the needle shaft or may be tapered at least in sections in the direction of the needle tip. Such a taper can then be designed in such a way that the contour is retained in the shape and is continuously scaled by only one factor during the course of the longitudinal extension. A tapered portion may be present in the region of the groove and / or in the course of the remaining needle shaft. In the event that both the stem and the groove are tapered forward, the largest cross-sectional area of the groove at its end towards the remainder of the shank may preferably be 65% of the smallest cross-sectional area of the shank at its end towards the groove ,

Die maximale Erstreckung der Nadel im Bereich der Hohlkehle in der Breitenrichtung kann im Wesentlichen der maximalen Erstreckung der Nadel im Bereich des restlichen Schafts entsprechen. Durch die Anpassung der Breite der Hohlkehle an die Breite des Schaftes erhält die Nadel in der Hohlkehle zum Einen die benötigte Festigkeit für den Nähprozess. Zum Anderen wird das Stichloch in der Hohlkehle nicht weiter aufgeweitet als nötig und so das Nähgut so gut wie möglich geschont. In dem Fall, dass sowohl der Schaft als auch die Hohlkehle nach vorne konisch verjüngend verlaufen, entsprechen sich dann die kleinste Breite des Schaft an dessen Ende in Richtung auf die Hohlkehle und die dann größte Breite der Hohlkehle an deren Ende in Richtung auf den restlichen Schaft.The maximum extent of the needle in the region of the groove in the width direction can correspond substantially to the maximum extension of the needle in the region of the remaining shaft. By adapting the width of the groove to the width of the shaft, the needle in the groove on the one hand receives the required strength for the sewing process. On the other hand, the stitch hole in the groove is not widened further than necessary and thus spared the fabric as good as possible. In the event that both the shaft and the groove are tapered conically forward, then correspond to the smallest width of the shaft at the end in the direction of the groove and then the largest width of the groove at the end in the direction of the remaining shaft ,

Der Nadelschaft weist eine Langrinne auf, die sich im Wesentlichen in der Längsrichtung der Nadel erstreckt. Die Hohlkehle und die Langrinne befinden sich bezüglich der Höhenrichtung auf gegenüberliegenden Seiten des Nadelschafts. Die Langrinne erstreckt sich vorzugsweise im Wesentlichen über die gesamte Längserstreckung des Nadelschafts vom Übergang zum Nadelkolben bis zum Öhr. Die Langrinne läuft vorteilhafterweise über ihre ganze Erstreckung in Längsrichtung und insbesondere im Bereich der Hohlkehle im Wesentlichen parallel und in einem konstanten Abstand zur Mittelachse der Nähmaschinennadel. Diese Ausführung ist wiederum schonend für das Nähgut. Langrinnen dienen dem Schutz des Nähfadens beim Durchstechen des Nähguts. Diese Funktion erfüllen prinzipiell auch Langrinnen, die über ihre Längserstreckung unterschiedliche Abstände zur Mittelachse aufweisen. Solche Langrinnen weisen dann allerdings Übergangsbereiche zwischen den auf unterschiedlichen Höhen liegenden Längsabschnitten der Langrinnen auf, die das Nähgut beim Einstechen oder auch beim Rückzug beschädigen können. Insofern ist im Wesentlichen parallel und in einem konstanten Abstand zur Mittelachse so auszulegen, dass die Rinnenkanten im Bereich der Hohlkehle geringfügig nach innen abgesenkt sein können, was dann entsprechend für den Rinnengrund gelten kann. Der Rinnengrund im Bereich der Hohlkehle kann auch geringfügig gegenüber dem Rinnengrund im Bereich des restlichen Schaftes angehoben sein. Die Abweichung der Rinne, das heißt der Rinnenkanten und/oder des Rinnengrundes, von der Parallelität von der Mittelachse bzw. die Abweichung des Abstands der Rinnenkanten und/oder Rinnengrund zur Mittelachse im Bereich der Hohlkehle zum restlichen Schaft beträgt dann maximal 10% einer mittleren Breite des Schaftes. Die Abweichung der Rinne von der Parallelität bzw. die Abweichung des Abstandes der Rinne von der Mittelachse kann maximal 5% einer mittleren Breite des Schaftes betragen. Die Abweichung der Rinne von der Parallelität bzw. die Abweichung des Abstandes der Rinne von der Mittelachse kann maximal 2% einer mittleren Breite des Schaftes betragen.
Der Schaft kann in Längsrichtung im Anschluss an die Hohlkehle eine Rinne aufweisen. Diese Rinne wird dann oft kurze Rinne genannt. Diese liegt dann bezüglich der Höhenrichtung auf der entgegengesetzten Seite von der Langrinne.
Die kurze Rinne kann von der Hohlkehle bis zum Kolben reichen. Zwischen der Hohlkehle und der kurzen Rinne kann auch ein gegenüber der Hohlkehle erhabener Bereich vorliegen. Wie weiter vorne beschrieben, dient ein solcher erhabener Bereich dazu, dass der Faden in der Hohlkehle gut von einem Greiferelement aufgenommen werden kann. Alle erfindungsgemäßen Ausführungen einer Nähnadel können eine solche kurze Rinne aufweisen.The needle shaft has a long groove which extends substantially in the longitudinal direction of the needle. The groove and the long groove are located on opposite sides of the needle shaft with respect to the height direction. The long groove preferably extends substantially over the entire longitudinal extent of the needle shaft from the transition to the needle piston to the eye. The long channel runs advantageously over its entire extent in the longitudinal direction and in particular in the region of the groove substantially parallel and at a constant distance from the central axis of the sewing machine needle. This design is again gentle on the sewing material. Long troughs serve to protect the sewing thread when piercing the sewing material. In principle, this function is also fulfilled by long channels, which have different distances to the central axis over their longitudinal extent. However, such elongated troughs then have transitional areas between the longitudinal sections of the elongated troughs located at different heights, which can damage the sewing material during insertion or even during retraction. In this respect, it should be interpreted essentially parallel and at a constant distance from the central axis so that the groove edges can be slightly lowered in the region of the groove inwards, which can then apply correspondingly to the groove bottom. The channel bottom in the region of the groove can also be raised slightly in relation to the channel bottom in the region of the remaining shaft. The deviation of the channel, that is the channel edge and / or the channel bottom, from the parallelism of the central axis or the deviation of the distance of the channel edges and / or channel bottom to the central axis in the region of the groove to the remaining shaft is then a maximum of 10% of a mean width of the shaft. The deviation of the groove from the parallelism or the deviation of the distance of the groove from the central axis can amount to a maximum of 5% of a mean width of the shank. The deviation of the groove from the parallelism or the deviation of the distance of the groove from the central axis can amount to a maximum of 2% of a mean width of the shank.
The shaft may have a groove in the longitudinal direction following the groove. This channel is often called a short channel. This is then with respect to the height direction on the opposite side of the long trough.
The short groove can reach from the groove to the piston. Between the groove and the short groove, a region raised in relation to the groove can also be present. As described earlier, such a raised area serves to allow the thread in the groove to be well received by a gripper member. All embodiments of a sewing needle according to the invention may have such a short groove.

Die Kontur der Nadel im Bereich der Längserstreckung der Hohlkehle in der Querschnittsansicht, die sich bei einem Schnitt senkrecht zur Längserstreckung der Nadel ergibt, kann neben dem ersten Winkelabschnitt zumindest einen zweiten Winkelabschnitt aufweisen, der gerade verläuft und einen dritten Winkelabschnitt, der den ersten und den zweiten Winkelabschnitt verbindet. Der dritte Abschnitt verbindet die beiden anderen Abschnitte knickfrei. Der gerade Abschnitt ist vorzugsweise kurz ausgeführt und vorzugsweise an beiden Seiten in der Breitenrichtung vorhanden. Der gerade Abschnitt kann unter einem Winkel von 18° zur Höhenrichtung stehen. Der gerade Abschnitt kann unter einem Winkel von 15° bis 21° zur Höhenrichtung stehen. Der gerade Abschnitt kann unter einem Winkel von 12° bis 24° zur Höhenrichtung stehen. Der dritte Winkelabschnitt führt den Rundungsradius des ersten Winkelabschnitts tangential ohne Knicke in den geraden Abschnitt des zweiten Winkelabschnitts über. Zumindest die Kontur des dritten Winkelbereichs, also des Übergangs zwischen dem ersten und zweiten Winkelbereich, weist eine Winkellage gegenüber einem eventuell auftreffenden Greifer auf, die es ermöglicht, dass trotz Berührung beide Teile ohne Beschädigung weiter den Nähprozess fortsetzen können. In einer weiteren vorteilhaften Ausgestaltung kann der Winkel des geraden Abschnitts, der im Bereich der Hohlkehle den zweiten Winkelabschnitt überstreicht, im weiteren Verlauf im Bereich des Schafts veränderlich ausgeführt sein. Der Winkel kann in Richtung auf den Nadelkolben zum Beispiel von 30° auf 36° anwachsen. Die Vergrößerung des Winkels kann auch um einen anderen Betrag erfolgen, ebenso kann der Winkel des Schafts angrenzend an die Hohlkehle einen anderen Betrag als 30° aufweisen, je nachdem wie die Hohlkehle ausgestaltet ist.The contour of the needle in the region of the longitudinal extent of the groove in the cross-sectional view, which results in a section perpendicular to the longitudinal extent of the needle, in addition to the first angle portion have at least a second angle portion which extends straight and a third angle portion, the connects the first and the second angle section. The third section connects the other two sections kink-free. The straight section is preferably made short and preferably present on both sides in the width direction. The straight section can be at an angle of 18 ° to the vertical direction. The straight section can be at an angle of 15 ° to 21 ° to the height direction. The straight section can be at an angle of 12 ° to 24 ° to the vertical direction. The third angle section leads the radius of curvature of the first angle section tangentially without kinks into the straight section of the second angle section. At least the contour of the third angular region, that is to say the transition between the first and second angular region, has an angular position with respect to a possibly impinging gripper, which makes it possible for both parts, despite contact, to continue the sewing process without damage. In a further advantageous embodiment, the angle of the straight section, which sweeps over the second angle section in the region of the groove, can be made variable in the further course in the region of the shaft. The angle may increase in the direction of the needle piston, for example from 30 ° to 36 °. The increase of the angle can also be done by a different amount, as well as the angle of the shaft adjacent to the groove may have an amount other than 30 °, depending on how the groove is designed.

Die Nähmaschinennadel kann im Bereich der Erstreckung der Hohlkehle in der Längserstreckung der Nadel in der Schnittebene senkrecht zur Längsrichtung spiegelsymmetrisch zu einer Symmetrieachse, die durch die Höhenrichtung und die die Mittelachse definiert ist, ausgeführt sein. Durch diese Symmetrie kann die Nähmaschinennadel sowohl in Nähmaschinen eingesetzt werden, in denen der Greifer von der linken als auch in Nähmaschinen, in denen der Greifer von der rechten Seite der Nadel her in die Hohlkehle eingreift. Ebenso kann die Nadel somit in Maschinen bzw. Anwendungen eingesetzt werden, in denen in der Hohlkehle eine Fase benötigt wird. Die Kontur der Hohlkehle der erfindungsgemäßen Nähmaschinennadel macht die Ausführung einer zusätzlichen Fase in der Hohlkehle überflüssig. In Verbindung mit der Symmetrie gilt dies für jede Fase, egal auf welcher Seite der Hohlkehle diese von Nöten wäre. Die Symmetrie kann vorzugsweise auch für die Langrinne gelten. Das Zentrum der Langrinne liegt dann genauso auf der Symmetrieachse, wie der Punkt des Kreisbogens der Kontur der Hohlkehle, an dem eine Parallele zur Breitenrichtung tangential anliegt. Ebenso sind vorzugsweise alle ersten, zweiten und dritten Winkelbereiche spiegelsymmetrisch angeordnet.The sewing machine needle can be embodied in the region of the extension of the groove in the longitudinal extension of the needle in the sectional plane perpendicular to the longitudinal direction with mirror symmetry to an axis of symmetry which is defined by the height direction and the central axis. By this symmetry, the sewing machine needle can be used both in sewing machines, in which the gripper from the left as well as in sewing machines, in which the gripper engages from the right side of the needle into the groove. Likewise, the needle can thus be used in machines or applications in which a chamfer is required in the groove. The contour of the groove of the sewing machine needle according to the invention makes the execution of an additional bevel in the groove superfluous. In connection with the symmetry this applies to every chamfer, no matter on which side of the groove this would be needed. The symmetry may preferably also apply to the long trough. The center of the long trough then lies on the symmetry axis as well as the point of the circular arc of the contour of the groove on which a parallel tangential to the width direction. Likewise, preferably, all first, second and third angular ranges are arranged mirror-symmetrically.

In dem erfindungsgemäßen Nähverfahren werden zumindest eine Nähnadel und zumindest ein Greifer eingesetzt. Die Nähnadel weist folgende Merkmale auf:
Einen Nadelschaft, der sich im Wesentlichen in der Längsrichtung der Nadel erstreckt.
Ein Öhr, das die Nadel im Wesentlichen in ihrer Höhenrichtung durchgreift, wobei die Höhenrichtung der Nadel senkrecht zu ihrer Längsrichtung verläuft.
Eine Hohlkehle, die in Längsrichtung der Nadel dem Öhr vorgelagert ist, wobei die Kontur der Hohlkehle gegenüber der Kontur des Schaftes in der Höhenrichtung der Nadel zurückspringt. Die Kontur der Hohlkehle ist zumindest in einem Teilbereich der Erstreckung der Hohlkehle in Längsrichtung der Nadel in einer Schnittebene senkrecht zur Längsrichtung der Nadel im Wesentlichen kreisbogenförmig ausgestaltet. Der kreisbogenförmige Bereich überstreicht einen ersten Winkelabschnitt des Nadelumfanges.
Der Greifer übernimmt im Normalbetrieb die Fadenschlinge im Rahmen einer Greifbewegung, bei der er an der ausgetriebenen Nadel vorbeigreift. Der Greifer übernimmt die Fadenschlinge hierbei im Bereich der Hohlkehle der Nadel. Der Greifer kann hierbei zum Beispiel Rotationsbewegungen oder Schwenkbewegungen ausführen. In jeder Ausführungsform der Bewegung des Greifers weist der Bewegungsverlauf des Greifers Komponenten in einer Richtung auf, die der Breitenrichtung der Nähmaschinennadel entspricht.
Der Greifer kollidiert bei betriebsbedingten Auslenkungen der Nadel mit der Nadel in dem ersten Winkelabschnitt der Kontur der Hohlkehle der Nadel.
In dem erfindungsgemäßen Nähverfahren wird eine Nadel verwendet, die in diesem ersten Winkelabschnitt eine Kontur aufweist, die einen Krümmungsradius besitzt, der zwischen 35% und 100% der maximalen Erstreckung der Nadel in ihrer Breitenrichtung beträgt. Die Breitenrichtung der Nadel steht senkrecht zu ihrer Längs- und Höhenrichtung. Durch die Verwendung einer solchen Nadel in dem erfindungsgemäßen Verfahren wird das Nähverfahren weniger anfällig gegenüber Störungen, weil die Nadel und der Greifer bei Störungen und einer daraus folgenden Kollision geeignet aneinander vorbeigleiten können und der Nähprozess hierdurch ohne Unterbrechung fortgesetzt werden kann. Der Greifer kann auch in den anderen Winkelabschnitten der Kontur der Hohlkehle mit der Nadel kollidieren. Zumindest auch im dritten Winkelabschnitt weist die Kontur der Hohlkehle der Nadel eine Winkellage zur Breitenrichtung auf, die es ermöglicht, dass der Nähprozeß trotz Kollision zwischen Greifer und Nadel fortgesetzt werden kann.

Fig. 1
Figur 1 zeigt eine erfindungsgemäße Nähmaschinennadel in vereinfachter Schrägansicht auf die Hohlkehle
Fig. 2
Figur 2 zeigt eine erfindungsgemäße Nähmaschinennadel in vereinfachter Schrägansicht auf die Langrinne
Fig. 3
Figur 3 zeigt eine Darstellung der Kontur der erfindungsgemäßen Nähmaschinennadel im Schnitt in der Hohlkehle
Fig. 4
Figur 4 zeigt eine Darstellung der Kontur der erfindungsgemäßen Nähmaschinennadel im Schnitt im Nadelschaft.
In the sewing method according to the invention, at least one sewing needle and at least one gripper are used. The sewing needle has the following features:
A needle shaft extending substantially in the longitudinal direction of the needle.
An eye, which penetrates the needle substantially in its height direction, wherein the height direction of the needle is perpendicular to its longitudinal direction.
A groove, which is upstream of the needle in the longitudinal direction of the eye, wherein the contour of the groove against the contour of the shaft in the height direction of the needle springs back. The contour of the groove is at least in a portion of the extension of the groove in the longitudinal direction of the needle in a sectional plane perpendicular to the longitudinal direction of the needle configured substantially circular arc. The circular arc-shaped area covers a first angle section of the needle circumference.
In normal operation, the gripper takes over the thread loop as part of a gripping movement, in which it grips past the expelled needle. The gripper takes over the thread loop in the area of the groove of the needle. The gripper can in this case, for example, perform rotational movements or pivoting movements. In each embodiment of the movement of the gripper, the movement pattern of the gripper has components in a direction corresponding to the width direction of the sewing machine needle.
The gripper collides with operational deflections of the needle with the needle in the first angular portion of the contour of the groove of the needle.
In the sewing method according to the invention, a needle is used which in this first angle section has a contour which has a radius of curvature which is between 35% and 100% of the maximum extension of the needle in its width direction. The width direction of the needle is perpendicular to its longitudinal and vertical directions. By using such a needle in the method according to the invention, the sewing method becomes less susceptible to disturbances, because the needle and the gripper can slip past each other in case of disturbances and a consequent collision and the sewing process can be continued without interruption. The gripper can also work in the other Angular sections of the contour of the groove to collide with the needle. At least in the third angle section, the contour of the groove of the needle on an angular position to the width direction, which allows the sewing process can be continued despite collision between the hook and needle.
Fig. 1
FIG. 1 shows a sewing machine needle according to the invention in a simplified oblique view of the groove
Fig. 2
FIG. 2 shows a sewing machine needle according to the invention in a simplified oblique view of the long trough
Fig. 3
FIG. 3 shows a representation of the contour of the sewing machine needle according to the invention in section in the groove
Fig. 4
FIG. 4 shows a representation of the contour of the sewing machine needle according to the invention in section in the needle shaft.

Figur 1 zeigt eine erfindungsgemäße Nähmaschinennadel 1 in vereinfachter Schrägansicht auf die Hohlkehle 10. Die Nähmaschinennadel 1 erstreckt sich in Längsrichtung L von einem endseitigen Nadelkolben 4 über den Schaft 5 und über das Öhr 6 bis zur Spitze 7. Der Teilbereich 9 der Hohlkehle 10, der sich von der unmittelbaren Nähe des Öhrs 6 über einen Teilbereich der Längserstreckung des Nadelschaftes 5 erstreckt, ist ebenfalls angegeben. Ebenso ist der restliche Bereich 12 des Nadelschaftes 5 angedeutet. Die Kontur 11, die sich in einer Schnittebene ergibt, die senkrecht zur Längsrichtung L und im Teilbereich 9 der Hohlkehle 10 steht, kann grob erkannt werden. Zur Orientierung sind die Längsrichtung L, die Breitenrichtung B und die Höhenrichtung H eingezeichnet. FIG. 1 The sewing machine needle 1 extends in the longitudinal direction L of an end-side needle piston 4 via the shaft 5 and via the eye 6 to the top 7. The portion 9 of the groove 10, which differs from the immediate vicinity of the eyelet 6 extends over a portion of the longitudinal extent of the needle shaft 5 is also indicated. Likewise, the remaining area 12 of the needle shaft 5 is indicated. The contour 11, which results in a sectional plane which is perpendicular to the longitudinal direction L and the partial region 9 of the groove 10, can be roughly recognized. For orientation, the longitudinal direction L, the width direction B and the height direction H are drawn.

Figur 2 zeigt eine erfindungsgemäße Nähmaschinennadel 1 in vereinfachter Schrägansicht auf die Langrinne 8. Bis auf die Hohlkehle 10 sind die einzelnen Abschnitte der Längserstreckung der Nähmaschinennadel 1 auch hier angegeben. Insbesondere ist zu erkennen, dass die Langrinne 8 einschließlich ihrer Kanten, die den nicht dargestellten Nähfaden beim Nähen schützen, einen geraden Verlauf ohne Stufen aufweist. FIG. 2 shows a sewing machine needle 1 according to the invention in a simplified oblique view of the long trough 8. Except for the groove 10, the individual sections of the longitudinal extent of the sewing machine needle 1 are also given here. In particular, it can be seen that the long channel 8 including its edges, which protect the sewing thread, not shown, when sewing, has a straight course without steps.

Figur 3 zeigt eine Darstellung der Kontur 11 der erfindungsgemäßen Nähmaschinennadel 1 im Schnitt in der Hohlkehle 10 aus Figur 1. Der Schnitt kann an jeder beliebigen Stelle des Teilbereichs 9 der Hohlkehle 10 zustande gekommen sein. Ausgenommen sind hiervon die Übergangsbereiche des Teilbereichs 9 der Hohlkehle 10 zum Öhr 6 und zum restlichen Bereich 12 des Nadelschafts 5. Die Hohlkehle 10 ist in dieser Darstellung oben, die Langrinne 8 unten. Der Rundungsradius r ist als Pfeillinie dargestellt. Die Winkelbereiche w1, w2 und w3 sind mit gestrichelten Linien angedeutet. Zur Verdeutlichung ist ein Koordinatensystem eingezeichnet, das die Breitenrichtung B und die Höhenrichtung H angibt. Die Längsrichtung L steht senkrecht zur Zeichenebene. Innerhalb der Kontur ist parallel zur Breitenrichtung B die maximale Erstreckung b der Nähmaschinennadel 1 im Teilbereich 9 der Hohlkehle 10 zu erkennen. Die Mittelachse M läuft in dieser Darstellung senkrecht zur Zeichenebene und ist festgelegt durch den Schnittpunkt der beiden mit Unterbrechungen eingezeichneten Linien, von denen diejenige parallel zur Höhenrichtung H mit dem Bezugszeichen S versehen ist. Die Kontur 11 der Nähmaschinennadel 1 im Teilbereich 9 der Hohlkehle 10 ist zu der Symmetrieachse S spiegelsymmetrisch. Der Scheitelpunkt der Winkelbereiche w1, w2 und w3 ist der Schnittpunkt der Symmetrieachse S mit der Parallelen zur Breitenrichtung B, auf der die maximale Erstreckung b der Nadel in Breitenrichtung liegt. Der Abstand I der Langrinne 8 zur Mittelachse M ist durch einen Pfeil dargestellt. An der linken Seite der Kontur 11 sind ein Übergang 13 und ein gerader Abschnitt 14 gezeigt. Der Übergang 13 verbindet den geraden Abschnitt 14 knickfrei mit der im Wesentlichen kreisbogenförmigen Kontur des ersten Winkelabschnitts w1. FIG. 3 shows a representation of the contour 11 of the sewing machine needle 1 according to the invention in section in the groove 10 from FIG. 1 , The cut can At any point of the portion 9 of the groove 10 have come about. Excluded hereof are the transition regions of the portion 9 of the groove 10 to the eye 6 and the remaining portion 12 of the needle shaft 5. The groove 10 is in this illustration above, the long groove 8 below. The rounding radius r is shown as an arrow line. The angular ranges w1, w2 and w3 are indicated by dashed lines. For clarity, a coordinate system is indicated, which indicates the width direction B and the height direction H. The longitudinal direction L is perpendicular to the plane of the drawing. Within the contour, the maximum extent b of the sewing machine needle 1 in the partial region 9 of the groove 10 can be seen parallel to the width direction B. The center axis M runs in this representation perpendicular to the plane and is defined by the intersection of the two lines drawn with breaks, of which the one parallel to the height direction H is provided with the reference symbol S. The contour 11 of the sewing machine needle 1 in the portion 9 of the groove 10 is mirror-symmetrical to the symmetry axis S. The vertex of the angular ranges w1, w2 and w3 is the intersection of the axis of symmetry S with the parallels to the width direction B, on which the maximum extension b of the needle lies in the width direction. The distance I of the long channel 8 to the central axis M is shown by an arrow. On the left side of the contour 11, a transition 13 and a straight portion 14 are shown. The transition 13 connects the straight section 14 kink-free with the substantially circular arc-shaped contour of the first angle section w1.

Figur 4 zeigt eine Darstellung der Kontur der erfindungsgemäßen Nähmaschinennadel 1 im Schnitt im Nadelschaft 5. Auch diese Kontur kann sich an jeder Stelle des Nadelschaftes 5 ergeben, die Kontur in Übergangsbereichen wieder abweichen. Das Koordinatensystem mit der Breitenrichtung B und der Höhenrichtung H ist wieder zur Orientierung angegeben. Die Kontur ist wiederum spiegelsymmetrisch zur Achse S, die durch die Mittelachse M und parallel zur Höhenrichtung H läuft. Die maximale Erstreckung bs der Nähmaschinennadel 1 im restlichen Bereich 12 des Schafts 5 in Breitenrichtung B ist dargestellt. Diese entspricht der maximalen Erstreckung b der Nähmaschinennadel 1 im Teilbereich 9 der Hohlkehle 10 in Breitenrichtung B aus Figur 3. Die maximale Erstreckung bs kann von der maximalen Erstreckung b abweichen, wenn zum Beispiel die Nadel konisch ausgeführt ist. Bezugszeichenliste 1 Nähmaschinennadel 3 Nadelumfang 4 Nadelkolben 5 Nadelschaft 6 Öhr 7 Spitze 8 Langrinne 9 Teilbereich der Hohlkehle 10 Hohlkehle 11 Kontur 12 Bereich des restlichen Schafts 13 Übergang 14 gerader Bereich b Maximale Erstreckung der Nähmaschinennadel 1 im Teilbereich 9 der Hohlkehle 10 in Breitenrichtung B bs Maximale Erstreckung der Nähmaschinennadel 1 im restlichen Bereich 12 des Schafts 5 in Breitenrichtung B h Maximale Erstreckung der Nähmaschinennadel 1 im Teilbereich 9 der Hohlkehle 10 in Höhenrichtung H l Abstand der Langrinne 8 von der Mittelachse M r Rundungsradius w1 erster Winkelabschnitt w2 zweiter Winkelabschnitt w3 dritter Winkelabschnitt B Breitenrichtung H Höhenrichtung L Längsrichtung M Mittelachse S Symmetrieachse FIG. 4 shows a representation of the contour of the sewing machine needle 1 according to the invention in section in the needle shaft 5. Also, this contour can arise at any point of the needle shaft 5, the contour deviate again in transition areas. The coordinate system with the width direction B and the height direction H is again indicated for orientation. The contour is in turn mirror-symmetrical to the axis S, which passes through the central axis M and parallel to the height direction H. The maximum extent bs of the sewing machine needle 1 in the remaining area 12 of the shaft 5 in the width direction B is shown. This corresponds to the maximum extent b of the sewing machine needle 1 in the portion 9 of the groove 10 in the width direction B from FIG. 3 , The maximum extension bs may deviate from the maximum extent b if, for example, the needle is conical. LIST OF REFERENCE NUMBERS 1 sewing machine needle 3 needle scope 4 needle piston 5 needle shaft 6 eyelet 7 top 8th long trough 9 Part of the groove 10 fillet 11 contour 12 Area of the remaining shaft 13 crossing 14 straight range b Maximum extension of the sewing machine needle 1 in the portion 9 of the groove 10 in the width direction B bs Maximum extension of the sewing machine needle 1 in the remaining area 12 of the shaft 5 in the width direction B H Maximum extension of the sewing machine needle 1 in the portion 9 of the groove 10 in the height direction H. l Distance of the long trough 8 from the central axis M r rounding radius w1 first angle section w2 second angle section w3 third angle section B width direction H height direction L longitudinal direction M central axis S axis of symmetry

Claims (9)

  1. Sewing machine needle (1) having the following features:
    - a needle shank (5) which extends substantially in the longitudinal direction (L) of the needle (1);
    - an eyelet (6) which engages through the needle (1) substantially in the height direction (H) of the latter, wherein the height direction (H) of the needle (1) runs perpendicularly to the longitudinal direction (L) of the latter;
    - a chamfer (10) which in the longitudinal direction (L) of the needle (1) is disposed ahead of the eyelet (6), wherein the contour (11) of the chamfer (10) in the height direction (H) of the needle (1) is recessed in relation to the contour of the shank (5);
    - wherein the cross-sectional area of the needle (1) in the region (9) of the extent of the chamfer (10) in the longitudinal direction (L) of the needle (1) is at most between 60% and 80% of the smallest cross-sectional area to be measured perpendicularly to the longitudinal direction (L) of the needle (1) in the region of the longitudinal extent of the remaining needle shank (12) and;
    - wherein the needle (1) in the region (9) of the chamfer (10) in the height direction (H) has a maximum extent (h) which is between 55% and 75% of the maximum extent (b) of the needle (1) in the region (9) of the chamfer (10) in the width direction (B); and
    - wherein the contour (11) of the chamfer (10) at least in a part-region of the extent of the chamfer (10) in the longitudinal direction (L) of the needle (1) in a sectional plane perpendicular to the longitudinal direction (L) of the needle (1) is designed so as to be substantially circular-arcuate;
    - wherein said circular-arcuate region sweeps a first angular portion (w1) of the needle circumference (3),
    characterized in that
    - the radius (r) of the substantially circular-arcuate contour in said first angular portion (w1) of the needle circumference (3) in this part-region of the longitudinal extent of the chamfer (10) in the longitudinal direction (L) of the needle (1) is between 45% and 60% of the maximum extent (b) of the needle (1) in the width direction (B) of the latter;
    - wherein the width direction (B) is perpendicular to the longitudinal direction (L) and the height direction (H) of the needle (1).
  2. Sewing machine needle (1) according to the preceding claim,
    characterized in that
    the substantially circular-arcuate contour (11) of the needle (1) in the region (9) of the chamfer (10) in the sectional plane covers a first angular portion (w1) of at least 90°.
  3. Sewing machine needle (1) according to one of the preceding claims,
    characterized in that
    the needle (1) in the region (9) of the extent of the chamfer (10) in the longitudinal direction (L) of the needle (1) reaches the maximum extent (b) of said needle (1) in the width direction (B) below a central axis (M), in particular reaches between 25% and 40% of the maximum extent of said needle (1) in the height direction (H) measured from that side that faces away from the chamfer (10) .
  4. Sewing machine needle (1) according to one of the preceding claims,
    characterized in that
    the maximum extent of the needle (1) in the region (9) of the chamfer (10) in the width direction (B) corresponds substantially to the minimum of the maximum extent (bs) of the needle (1) in the region of the remaining needle shank (12) in the width direction (B).
  5. Sewing machine needle (1) according to one of the preceding claims,
    characterized in that
    the needle (1) has a longitudinal groove (8) which extends substantially in the longitudinal direction (L) of the needle (1) and which is disposed on that side of the needle (1) that faces away from the chamfer (10).
  6. Sewing machine needle (1) according to the preceding claim,
    characterized in that
    the longitudinal groove (8) across the entire extent thereof in the longitudinal direction (L) and in particular in the region of the chamfer (10) runs so as to be substantially parallel with and at a constant spacing from the central axis (M) of the needle.
  7. Sewing machine needle (1) according to one of the preceding claims,
    characterized in that
    the contour (11) of the needle (1) in the part-region (9) of the longitudinal extent of the chamfer (10) in the cross-sectional view which results in the case of a section perpendicular to the longitudinal extent (L) of the needle (1), besides the first angular portion (w1), has at least one second angular portion (w2) which runs in a straight manner, and in that a third angular portion (w3) connects the first (w1) and the second angular portion (w2), wherein the third portion (w3) connects the two other portions (w1, w2) without a kink.
  8. Sewing machine needle (1) according to one of the preceding claims,
    characterized in that
    the sewing machine needle (1) in the region of the extent of the chamfer (10) in the longitudinal direction (L) of the needle (1), in the sectional plane perpendicular to said longitudinal direction (L) is embodied so as to be mirror-symmetrical in relation to a symmetry axis (S), wherein the symmetry axis (S) is defined by the height direction (H) and the central axis (M).
  9. Sewing method in which at least one sewing needle (1) and at least one gripper are used,
    wherein the sewing needle (1) has the following features:
    - a needle shank (5) which extends substantially in the longitudinal direction (L) of the needle (1);
    - an eyelet (6) which engages through the needle (1) substantially in the height direction (H) of the latter, wherein the height direction (H) of the needle (1) runs perpendicularly to the longitudinal direction (L) of the latter;
    - a chamfer (10) which in the longitudinal direction (L) of the needle (1) is disposed ahead of the eyelet (6), wherein the contour (11) of the chamfer (10) in the height direction (H) of the needle (1) is recessed in relation to the contour of the shank (5), and wherein the contour (11) of the chamfer (10) at least in a part-region of the extent of the chamfer (10) in the longitudinal direction (L) of the needle (1), in a sectional plane perpendicular to the longitudinal direction (L) of the needle (1), is designed so as to be substantially circular-arcuate;
    - wherein said circular-arcuate region sweeps a first angular portion (w1) of the needle circumference (3),
    and wherein the gripper in the normal operation acquires the thread loop in the context of a gripping movement in which said gripper grips beyond the extended needle (1),
    characterized in that
    - the gripper in deflections of the needle (1) that are caused by the operation collides with the needle (1) in the first angular portion (w 1) of the needle (1);
    - wherein a needle (1) is used which in said first angular portion (w1) has a contour which has a curvature radius (r) which is between 45% and 60% of the maximum extent (b) of the needle (1) in the width direction (B) of the latter;
    - wherein the width direction (B) is perpendicular to the longitudinal direction (L) and the height direction (H) of the needle (1).
EP15188948.2A 2015-10-08 2015-10-08 Sewing needle and sewing method Active EP3153617B1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP15188948.2A EP3153617B1 (en) 2015-10-08 2015-10-08 Sewing needle and sewing method
PL15188948T PL3153617T3 (en) 2015-10-08 2015-10-08 Sewing needle and sewing method
PL16769955T PL3359720T3 (en) 2015-10-08 2016-09-16 Sewing needle, needle manufacturing method and sewing method
BR112018006708-3A BR112018006708B1 (en) 2015-10-08 2016-09-16 Sewing machine needle, process for producing a sewing machine needle and sewing process
US15/767,097 US10753024B2 (en) 2015-10-08 2016-09-16 Sewing machine needle, method for producing a sewing machine needle, and sewing method
CN201680058199.0A CN108368659B (en) 2015-10-08 2016-09-16 Sewing machine needle, method for producing a sewing machine needle and sewing method
KR1020187012543A KR102556570B1 (en) 2015-10-08 2016-09-16 Sewing machine needle, sewing machine needle manufacturing method and sewing method
EP16769955.2A EP3359720B1 (en) 2015-10-08 2016-09-16 Sewing needle, needle manufacturing method and sewing method
PCT/EP2016/071998 WO2017060056A1 (en) 2015-10-08 2016-09-16 Sewing machine needle, method for producing a sewing machine needle, and sewing method
JP2018517369A JP6892442B2 (en) 2015-10-08 2016-09-16 Sewing machine needle, sewing machine needle manufacturing method and sewing method
TW105132297A TWI700409B (en) 2015-10-08 2016-10-06 Sewing machine needle, method for the manufacture of a sewing machine needle and sewing method
HK18113593.4A HK1254626A1 (en) 2015-10-08 2018-10-24 Sewing machine needle, method for producing a sewing machine needle, and sewing method

Applications Claiming Priority (1)

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EP15188948.2A EP3153617B1 (en) 2015-10-08 2015-10-08 Sewing needle and sewing method

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EP3153617A1 EP3153617A1 (en) 2017-04-12
EP3153617B1 true EP3153617B1 (en) 2018-07-04

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EP (2) EP3153617B1 (en)
JP (1) JP6892442B2 (en)
KR (1) KR102556570B1 (en)
CN (1) CN108368659B (en)
BR (1) BR112018006708B1 (en)
HK (1) HK1254626A1 (en)
PL (2) PL3153617T3 (en)
TW (1) TWI700409B (en)
WO (1) WO2017060056A1 (en)

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USD851907S1 (en) * 2016-08-29 2019-06-25 Nicole Lynn Hiza Hand sewing needle having periodic markings
USD926461S1 (en) * 2020-11-09 2021-08-03 Weibing She Crochet hook

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TWI700409B (en) 2020-08-01
TW201727001A (en) 2017-08-01
PL3359720T3 (en) 2020-02-28
BR112018006708B1 (en) 2022-06-21
WO2017060056A1 (en) 2017-04-13
KR102556570B1 (en) 2023-07-18
BR112018006708A2 (en) 2018-10-09
EP3359720A1 (en) 2018-08-15
CN108368659B (en) 2021-03-30
US20180291542A1 (en) 2018-10-11
EP3359720B1 (en) 2019-09-04
CN108368659A (en) 2018-08-03
PL3153617T3 (en) 2018-11-30
JP6892442B2 (en) 2021-06-23
EP3153617A1 (en) 2017-04-12
KR20180063245A (en) 2018-06-11
HK1254626A1 (en) 2019-07-26
JP2018535720A (en) 2018-12-06
US10753024B2 (en) 2020-08-25

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