JP2011062507A - Bobbin thread tip stopper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bobbin thread tip stopper which fixes a thread tip in order to prevent the thread wound in a bobbin used as bobbin thread from fraying. <P>SOLUTION: The bobbin thread tip stopper 5 is formed by an elongated flexible plate holding a bobbin 4 to bridge across both outer peripheral parts 3 of thread retaining plates 2 set on both right and left ends of a shaft part 1 of a bobbin. A part to be the center of the bobbin thread tip stopper is used as a base plate part 6. Arm parts 8, 8 are set via folded parts 7 on right and left sides of the base plate part. The right and left arms are folded toward both right and left thread holding plate sides and then bent parts 11 are set on positions of a shaft hole 10. Insertion parts 9 having a width slightly larger than the diameter of the shaft hole and folded parts are set to enable the insertion parts to be tightly inserted into the shaft part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bobbin thread end stopper for fixing a thread end of a bobbin wound around a bobbin used as a lower thread of a sewing machine.

  Conventionally, when the thread wound on the bobbin is placed in a sewing machine drawer or storage container, the tip of the lower thread wound on the bobbin is unwound from the bobbin and entangled with the thread unwound from the other bobbin. In order to prevent the thread from being entangled with the sewing machine, etc., or the unraveled thread being pulled out for a long time, it has a body part that can be inserted between thread holding plates provided at both ends of the bobbin winding body, and at least A sliding surface with a claw projecting from one end is extended, and a body portion with a thread groove formed on the sliding surface is bent into a ring shape, and a gap is provided between both ends of the ring shape so as to face each other. There was Patent Document 2 of a stable band having elasticity.

  Also, an elastic material body having a predetermined length from one end to the other end is formed in at least a substantially semicircular shape so that the thread wound around the bobbin can be pressed from the outside, and the thread wound around the bobbin There is also a patent document 3 of a bobbin thread stopper that is bent in a direction away from the outer peripheral surface of the elastic member, or provided with an incision for thread suspension at the end of the elastic material body.

  Then, a stopper body having a slightly smaller width than the inner dimension of the bobbin, a substantially semicircular shape and flexibility and having one or more key fixing portions at one end, and a width smaller than the inner dimension of the bobbin. Bobbin thread that has a semi-circular shape, has a spring property, has a stopper with a fixing key at one end, and the other end of the stopper body and the other end of the stopper are rotatably fixed There was Patent Document 1 of a stopper.

JP 2007-54567 A Japanese Utility Model Publication No. 56-96062 Japanese Utility Model Publication No. 63-177489

  In the technique shown in the conventional literature, a bobbin thread stopper is attached between thread holding plates provided at both ends of a bobbin thread winding shaft, and the elastic material is pressed from the outside of the thread wound around the bobbin shaft section. Since it is formed, it is difficult to operate the attaching and detaching of the thread stopper between the narrow thread holding plates.

Also, since it is an elastic material that holds down from the outside of the yarn, it changes from a state where the number of windings of the yarn is large to a small state, so that the outside of the yarn when the number of windings of the yarn becomes small Since the thread stopper that has been held down can no longer cope with the change in which the elastic force held down from becomes weaker, the thread presser is turned, which causes a disadvantage that the thread presser is insufficient.

  The present invention solves the problem as described above. As shown in FIG. 3, the bobbin 4 is passed over the outer peripheral portions 3 of the thread holding plates 2 provided at the left and right ends of the shaft portion 1 of the bobbin. The thread tip stopper 5 of the bobbin 4 is formed by a flexible elongated plate to be held, and the central portion of the thread tip stopper 5 is used as the substrate portion 6.

  Then, as shown in FIG. 1, the arm portions 8 and 8 are provided on the left and right sides through the bent portion 7 from the left and right positions of the substrate portion 6, and the left and right insertion portions 9 are pivoted through the bent portion 11 at the tip. The insertion portion 9 is provided with a length that can be accommodated in the portion 1, the width of the insertion portion 9 is made slightly larger than the diameter of the shaft hole 10, and the left and right arm portions 8, 8 are bent toward the left and right thread holding plates 2. The insertion portion 9 is inserted into the shaft hole 10 while the width of the insertion portion 9 is narrowed, and when the insertion is completed, the insertion portion 9 that has been bent back is restored. The insertion portion 9 is fixed to the shaft hole 10 by the repulsive force to be tried.

  Then, providing the bent portion 11 at a position from the bent portion 7 to the shaft hole 10 of the arm portions 8 and 8 facilitates insertion of the insertion portion 9 into the shaft hole 10 as shown in FIG. Since the bent portion 7 and the bent portion 11 in this embodiment are places where many operations of bending and bending back are performed, polypropylene resin is used as a flexible elongated plate corresponding to the operations. It is used and its thickness is 0.8mm, and it is free to use other materials.

  Then, as shown in FIG. 4, it is conceivable that one of the insertion portions 9 has a length that comes out of the shaft hole 10, and when the long insertion portion 9 is first inserted into the shaft hole 10, the insertion portion 9 comes out of the shaft hole 10. The inserted portion 9 serves as a guide for the insertion portion 9 to be inserted into the shaft hole 10 later, so that the insertion can be facilitated. The bobbin 4 is rotated in the front edge and the rear edge of the substrate portion 6 by threading. The stop portion 12 is provided.

  As other means, the insertion portion 9 inserted into the shaft hole 10 is fixed by the repulsive repulsive force, and the insertion portion 9 inserted into the shaft hole 10 is difficult to come out and stabilizes as shown in FIG. The insertion portion 9 is extended to a length that penetrates the shaft hole 10, the penetration portion 9 that penetrates is provided as a latching portion 13 having a width wider than the diameter of the shaft hole 10, and the width of the latching portion 13 is warped and bent. Thus, the latching portion 13 warped and bent by penetrating from the shaft hole 10 returns to its original width and becomes wider than the diameter of the shaft hole 10, so that it does not come out of the shaft hole 10, and the latching portion 13, the insertion portion 9, It is conceivable to provide a bending portion 17 where the latching portion 13 bends upward at the boundary so that the insertion portion 9 to be inserted later can be inserted.

  As another method for fixing the insertion portion 9 inserted into the shaft hole 10, as shown in FIG. 8, the insertion portion 9 is formed in the shaft hole 10 by setting the width of the insertion portion 9 to be smaller than the width of the diameter of the shaft hole 10. A folding portion 19 having a length that fits in the shaft hole 10 is provided on one of the right and left insertion portions 9 via a rebound bend portion 18 having a function of rebounding to a portion that is ahead of the insertion portion 9. If the folded portion 19 is folded back to the insertion portion 9 side and inserted into the shaft hole 10, it strongly contacts the inner surface of the shaft portion 1 with a repulsive force that tries to return to its original state by the rebound function of the folded portion 19. Therefore, the insertion portion 9 can be fixed.

Considering the storage base 14 during storage, the storage base 14 has a hanging groove 15 formed by a cut groove.
6, and as shown in FIG. 6, a hanging part 16 is provided on the front and rear edges of the base part 6 in the rotational direction of the bobbin 4 and is extended to an appropriate length from at least one base part 6. A storage method in which one of the hanging portions 16 is inserted into a hanging groove 15 provided on the storage base 14 is conceivable. When the hanging portion 16 is extended from the base portion 6, the surface of the base portion 6 is expanded. Therefore, description and advertisement can be made on the surface, and if the surface is stored in a plane with the surface down, the fit of the bobbin 4 is improved.

  In the present invention, the bobbin thread tip stopper 5 is attached not from the narrow space between the thread holding plates 2 and 2 provided at both ends of the shaft portion 1 around which the bobbin is wound. Installation and removal operations are easy and the bobbin thread cannot be unwound.

  And the thread | yarn tip stopper 5 fixes the shaft part 1 and the insertion part 9 because the insertion part 9 tries to return after inserting the flexible insertion part 9 in the shaft part 1 by bending it. The thread end fixed to the thread stopper 12 of the base plate 6 will not be unwound from the bobbin 4, so that it can be stored and arranged without being entangled with other things. As shown, when the hanging portion 16 is extended from the base portion 6, it is formed as a widened surface, and advertisements and classification symbols can be written on the widened surface, and the extended surface is The bobbin 4 fits better if stored in the same manner.

  Further, as shown in FIG. 7, if the storage base 14 having a plurality of hanging grooves 15 is used, the hanging portion 16 of the yarn end stopper 5 is hung on the hanging groove 15 of the storage base 14. This is an excellent storage effect that is easy to handle and store and easy to handle.

It is an expanded view which shows Example 1 of this invention. It is a perspective view which shows a bobbin. It is a perspective view which shows the middle of attachment of a thread | yarn tip stopper to a bobbin. It is an expanded view which shows the thread | yarn front-end | tip stopper which lengthened the front-end | tip of one arm part. It is an expanded view which shows the thread | yarn front-end | tip stopper which provided the latching part with the width | variety in the insertion part. It is an expanded view which shows the thread | yarn tip stopper provided with the hanging part before and behind the base part. It is a perspective view which shows the accommodation state which inserted the hanging part in the hanging groove of the storage base. It is the expanded view which provided the folding | returning part through the bending part in the insertion part.

  The present invention solves the problem as described above, and embodiments will be described below with reference to the drawings.

  As one example, as shown in FIG. 3, there is flexibility to hold the bobbin 4 by spanning both outer peripheral parts 3 of the thread holding plate 2 provided at the left and right ends of the shaft part 1 of the bobbin 4. A thread tip stopper 5 is formed by an elongated plate. As shown in FIG. 1, a portion where the outer peripheral portions 3 of the yarn holding plate 2 are stretched is defined as a substrate portion 6, and the right and left in the length direction of the substrate portion 6. The arm portions 8 and 8 are provided on the left and right sides through the bent portion 7 from the position, and the insertion portion 9 is formed at the tip of the arm portions 8 and 8 through the bent portion 11.

  This insertion portion 9 is a left and right insertion portion 9 that is a length that fits within the shaft portion 1 and is slightly wider than a width that can be easily inserted into the inner diameter of the shaft hole 10, and is shown in FIG. In this way, the left and right arm portions 8, 8 are bent to the left and right thread holding plates 2 side, and then the width of the insertion portion 9 is bent in a U shape to form a hook shape, while the insertion portion 9 is made narrower. The insertion portion 9 is fixed to the shaft hole 10 by a repulsive force that the insertion portion 9 that is bent after being inserted into the shaft hole 10 tries to return to its original shape.

  In addition to the insertion portion 9 being fixed to the shaft hole 10 by the repulsive force of the warped bent insertion portion 9 to return to the original position, a material having a large frictional resistance is provided on the lateral edge of the insertion portion 9 or On the other hand, the width of the insertion portion 9 may be tapered or tightly pushed.

  Then, a bent portion 11 is provided at a position from the bent portion 7 of the arm portion 8, 8 to the shaft hole 10 to facilitate insertion of the insertion portion 9 into the shaft hole 10, and the bobbin 4 is rotated. A thread stopper 12 by cutting is provided at the front or rear edge of the substrate 6 in the direction, and the thread stopper 12 may be provided only on one side.

  As another embodiment, as shown in FIG. 4, it is conceivable to make one of the insertion portions 9 have a length that penetrates from the shaft hole 10. By inserting it first, the insertion portion 9 protrudes outside the shaft hole 10.

  When the other insertion portion 9 is inserted into the shaft hole 10, the insertion portion 9 that protrudes outward from the shaft hole 10 serves as a guide. Therefore, the other insertion portion 9 is pivoted along the surface of the protrusion 9 that protrudes. It becomes easy to insert into the hole 10.

  As another embodiment, as shown in FIG. 5, the insertion part 9 inserted into the shaft hole 10 is fixed by the repulsive repulsive force, and the insertion part 9 inserted into the shaft hole 10 is difficult to come out and is stable. It is a thing.

  As a possible means, it is conceivable to extend the insertion portion 9 to a length that penetrates the shaft hole 10, and to provide the latching portion 13 having a width wider than the diameter of the shaft hole 10. Therefore, when the latching portion 13 is inserted into the shaft hole 10, it is inserted while bending the width of the latching portion 13 inwardly, and when the latching portion 13 penetrates out of the shaft hole 10, it is flexible. It is assumed that the stopper 13 can return to the original state with a wide width so that the removal from the shaft hole 10 can be made stable.

  The left and right latching portions 13, which protrude from the shaft hole 10 to the outside, spread outward from the thread holding plate 2 of the bobbin 4, but the thread wound around the bobbin 4 is unwound. There is no hindrance to prevention, and if the insertion portion 9 is inserted into the shaft hole 10 later in the order in which one of the insertion portions 9 is lengthened and inserted into the shaft hole 10 later, It becomes difficult for the latching portion 13 to be bent outside the shaft hole 10, and a bent portion 17 that bends upward is provided at the boundary between the insertion portion 9 and the latching portion 13 to facilitate later insertion. Is possible.

  As another method of fixing the insertion portion 9 inserted into the shaft hole 10, as shown in FIG. 8, the insertion portion 9 is made to be a shaft by making the width of the insertion portion 9 smaller than the width of the diameter of the shaft hole 10. It is formed so that it can be easily inserted into the hole 10, and one of the right and left insertion portions 9 has a bending line by a pressing force that has a function of rebounding to the front portion of the insertion portion 9, a bending line that thins the inner side to be bent back, etc. It is conceivable to provide a folded portion 19 having a length that fits in the shaft hole 10 via the rebound bent portion 18.

  When the folded portion 19 is inserted into the shaft hole 10, the folded portion 19 is inserted into the shaft hole 10 in a state where the folded portion 19 is folded back toward the insertion portion 9, Since the repulsive force due to the rebounding function comes into strong contact with the inner side surface of the shaft portion 1, the insertion portion 9 can be fixed.

  Example 5 considers a thread tip stopper 5 that is easy to organize during storage. As shown in FIG. 6, the bobbin 4 of the substrate unit 6 is appropriately selected from one or both of the front and rear edges in the rotational direction. As shown in FIG. 7, a plurality of hanging grooves 15 by cutting grooves are provided on the storage base 14 suitable for the size of the storage container. It is possible to form the storage base 14.

  The storage base 14 is used by inserting one hanging portion 16 extended to an appropriate width from the front and rear edges of the substrate portion 6 into a hanging groove 15 provided in the storage base 14. The hanging portion 16 is weighted downwardly from the storage base 14, and the falling force that the substrate portion 6 acts in the front-rear direction of the storage base 14 becomes weak and can be held. It is a matter of course that a storage method for hooking 5 is possible, and it is a matter of course that the thread stopper 12 by cutting is provided on the front and rear edges of the hanging part 16.

  If it is considered that the hanging part 16 of the substrate part 6 is not further removed from the hanging groove 15 of the storage base 14, the hanging part 16 is provided with an unevenness on one side next to the hanging part 16. If the other edge is flat when formed on the hanging portion 16, the flat edge of the hanging portion 16 is pressed against the lateral edge of the hanging groove 15 when the hanging portion 16 is inserted into the hanging groove 15. When the insertion is finished, the board part 6 is moved to the uneven edge side so that the uneven edge and the lateral edge of the hanging groove 15 are engaged with each other to prevent the falling off. Various other means can be considered for stopping.

DESCRIPTION OF SYMBOLS 1 Axis part 2 Thread holding plate 3 Both outer peripheral parts 4 Bobbin 5 Thread end stopper 6 Substrate part 7 Bending part 8 Arm part 9 Insertion part 10 Shaft hole 11 Bending part 12 Threading part 13 Latching part 14 Storage board 15 Hanging Groove 16 Hanging part 17 Bending part 18 Rebound bending part 19 Folding part

Claims (5)

  A bobbin thread end stopper is formed by a flexible elongated plate that holds the bobbin across the outer periphery of the thread holding plate provided at the left and right ends of the bobbin shaft. The center of the thread end stopper The board part is the board part, the arm part is provided on the left and right via the bent part from the left and right positions of the board part, the left and right arm parts are bent to the left and right thread holding plate side, and the bent part is at the position of the shaft hole. The thread tip stopper is fixed to the bobbin by inserting the shaft hole into the shaft hole by forming an insertion portion that fits into the shaft portion before the bent portion and can be inserted into the shaft hole. A bobbin thread tip stopper having a structure in which a thread stopper by cutting is provided at the edge of the base plate part.   The bobbin thread end stopper according to claim 1, wherein one of the right and left insertion portions has a length that does not fit within the shaft portion and extends out of the shaft hole.   2. The bobbin according to claim 1, wherein the insertion portion inserted into the shaft hole is extended longer than the length of the shaft hole, and a hooking portion having a width larger than the diameter of the shaft hole is provided in the inserted insertion portion. Thread tip stop.   The width of the insertion portion is smaller than the width of the diameter of the shaft hole, and in one of the left and right insertion portions, the folded portion of a length that rebounds to the tip portion of the insertion portion and fits in the shaft hole via the bent portion The bobbin thread tip stopper according to claim 1, wherein: A hanging portion extending from the edge of the base portion 6 in at least one direction to an appropriate length from the front and rear edges of the base portion, which is the rotational direction of the bobbin of the thread tip stopper, and the outside of the hanging portion; The bobbin thread end stopper according to any one of claims 1 to 4, wherein a thread stopper by cutting is provided at an edge of the bobbin.