JP2018131694A - Latch needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch needle which can suppress sudden variation of frictional resistance.SOLUTION: A latch needle 10 comprises: a needle body 11 with ancyroid hook 14 in a tip; and a latch 20 which is attached to the needle body 11, can revolve, and can detach from and attach to the hook 14. In a knocking over state that the latch 20 contacts with the hook 14, a loop of yarn S leaves to a tip side along the back face 20a of the latch 20. The needle body 11 comprises a scoop shape 11b in the back face 11a which is the other side with the face facing to the latch 20. The scoop shape 11b is provided to at least a crossing point of the needle body 11 and the back face 20a of the latch 20 when watching the latch needle 10 in the knocking over state from the side face to an axial direction A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a Bella needle provided with a hook and a Bella at the tip, and more particularly, to a Bella needle that prevents a sudden knitting resistance from occurring.

  At present, as a needle for knitting, a spatula needle is widely used in circular knitting machines and flat knitting machines (see, for example, Patent Document 1).

Published Utility Sho 61-168188

When a stitch is formed with this type of Bella needle, a movement of pulling out the tip of the Bella needle from the loop of the knitting yarn occurs. Specifically, the loop of the knitting yarn is formed so as to come out to the tip side of the needle along the back surface of the spatula in the knockover state where the spatula contacts the hook. At this time, if the loop of the knitting yarn is small, the loop may narrow down the portion covered by the spatula and the hook, and the frictional resistance between the spatula needle and the yarn may increase. Then, a sudden change in the frictional resistance becomes a load on the thread or needle, causing damage to the fabric or the needle.
Then, this invention makes it a subject to provide the Bella needle which can suppress the rapid fluctuation | variation of frictional resistance.

The present invention has been made to solve the above-described problems, and is characterized by the following.
The invention according to claim 1 is a spatula needle comprising a needle body having a hook-like hook at the tip, and a spatula attached to the needle body so as to be pivotable and detachable from the hook. In the knockover state in which the spatula is in contact with the hook, a loop of knitting yarn is formed so as to come out toward the tip side along the back surface of the spatula, and the needle body has a surface facing the spatula, Is provided with a curled shape on the back surface which is the opposite surface, and the curled shape is such that at least the needle main body and the back surface of the spatula intersect when the knocker-over beveled needle is viewed in the axial direction from the side. It is provided to the position to be.

  The invention described in claim 2 is characterized in that, in addition to the features of the invention described in claim 1, the twisted shape is a shape in which the back surface of the needle body is curved inward.

  The invention described in claim 3 is characterized in that, in addition to the features of the invention described in claim 1 or 2, the beveled shape is a chamfered shape formed on the back surface of the needle body.

  The invention according to claim 4 is characterized in that, in addition to the feature point of the invention according to any one of claims 1 to 3, the back surface of the needle body is gradually inclined in a tapering direction to the tip. To do.

  In addition to the features of the invention described in any one of the first to fourth aspects described above, the invention according to a fifth aspect is characterized in that the shortest yarn length that can be stretched around the needle body and the spatula is determined by the loop of the knitting yarn. When the length of the knitting yarn is long, the loop length of the knitting yarn gradually increases and does not decrease until the loop of the knitting yarn moves to the tip side along the back surface of the spatula and comes out of the spatula.

  The invention according to claim 1 is as described above, and the needle main body has a curled shape on the back surface that is the surface opposite to the surface facing the spatula, and the curled shape is formed by pulling the bera needle in a knockover state from the side surface. When viewed in the axial direction, at least a position where the needle body and the back surface of the spatula intersect is provided. According to such a configuration, it is possible to prevent the frictional resistance from rapidly changing when the loop of the knitting yarn rides on the spatula. That is, in the conventional configuration, when the loop of the knitting yarn comes out to the tip side along the back surface of the spatula in the knockover state, the knitting yarn loops suddenly when the loop of the knitting yarn rides on the back surface of the spatula and starts to slide. The loop was widened, causing a sudden change in frictional resistance. In this regard, according to the present invention, since the twisted shape is provided, the loop of the knitting yarn is not suddenly expanded even immediately after riding on the spatula, and the loop of the knitting yarn is gently expanded. As a result, the frictional resistance between the Bella needle and the thread is stabilized, and a clean fabric can be knitted. Moreover, since the knitting resistance is small, the power consumption of the knitting machine can be suppressed and the breakage of the needle can be suppressed.

  The invention according to claim 2 is as described above, and the twisted shape is a shape in which the back surface of the needle body is curved inward. According to such a configuration, when the loop of the knitting yarn slides on the back surface of the spatula, the shape of the loop does not change greatly, so that fluctuations in frictional resistance can be suppressed.

  Moreover, invention of Claim 3 is as above-mentioned, and the twist shape is a chamfering shape formed in the back surface of a needle | hook main body. According to such a configuration, the loop of the knitting yarn can be prevented from being suddenly expanded, and the yarn can be prevented from being rubbed at the corners on the back surface of the needle body.

  The invention according to claim 4 is as described above, and the back surface of the needle body is gradually inclined in a tapering direction to the tip. According to such a configuration, the loop of the knitting yarn can be easily removed from the tip of the spatula needle.

  Further, the invention according to claim 5 is as described above, and the loop length of the knitting yarn gradually increases until the loop of the knitting yarn moves to the tip side along the back surface of the spatula and comes out of the spatula. Does not decrease. According to such a configuration, since the loop length does not increase or decrease until the loop comes off from the tip of the bevel needle, the loop length can be increased gradually, and the rapid variation of the frictional resistance can be suppressed and the knitting yarn smoothly The loop can be removed from the tip of the Bella needle.

It is a figure which shows the knockover state of the Bella needle which concerns on 1st Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end view when cut by a vertical plane. It is a figure which shows the clear state of the Bella needle which concerns on 1st Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end elevation when cut along a vertical plane. It is a table | surface which shows the loop length of the Bella needle which concerns on 1st Embodiment. It is a figure which shows the knockover state of the Bella needle which concerns on 2nd Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end view when cut by a vertical plane. It is a figure which shows the clear state of the Bella needle which concerns on 2nd Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end elevation when cut along a vertical plane. It is a table | surface which shows the loop length of the Bella needle which concerns on 2nd Embodiment. It is a figure which shows the knock-over state of the conventional Bella needle, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With a surface perpendicular | vertical with respect to an axial direction It is an end elevation when cut. It is a figure which shows the clear state of the conventional Bella needle, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) It cut | disconnects by a surface perpendicular | vertical to an axial direction FIG. It is a table | surface which shows the loop length of the conventional Bella needle.

Embodiments of the present invention will be described with reference to the drawings.
The spatula needle 10 according to the present embodiment is used by being attached to a circular knitting machine or a flat knitting machine as a knitting needle, and as shown in FIG. A needle body 11 provided, and a spatula 20 attached to the needle body 11 so as to be rotatable and capable of being attached to and detached from the hook 14. The spatula needle 10 knits the fabric through yarn feeding and loop formation processes by opening and closing the spatula 20.

  Specifically, the spatula needle 10 is moved back and forth in the axial direction A by a knitting machine, and in conjunction with the back and forth operation, the spatula 20 is hooked 14 as shown in FIG. The fabric is knitted by alternately repeating the knock-over state in contact with and the clear state in which the spatula 20 is separated from the hook 14 and opens the hook 14 as shown in FIG.

  For example, by moving the Bella needle 10 in the axial direction A by the knitting machine, the clear hook 14 enters the loop of the knitting yarn S, and the yarn is held by the hook 14 of the Bella needle 10 on the other side of the loop. Thereafter, by moving the spatula needle 10 in the retracting direction, when the hook 14 is pulled out of the loop, the spatula 20 is closed by the loop and a knockover state is established, and the loop of the knitting yarn S follows the back surface 20a of the spatula 20. Pull out to the tip side. By this series of operations, the yarn can be passed through the loop to form a stitch. When the spatula needle 10 is moved again in the entering direction, the spatula 20 is opened by the tension of the thread that the hook 14 has gripped, and the clear state is established. The clear Bella needle 10 releases the gripped thread and enters the next loop.

  The needle body 11 according to the present embodiment is provided between the cheek portion 15 and the hook 14, a bar-shaped needle stem 13, a cheek portion 15 that is provided on the distal end side of the needle stem 13 and supports the spatula 20. And a connection unit 16. The cheek portion 15 is provided with a rotation shaft 25 that pivotally supports the spatula 20 in a rotatable manner. The rotation shaft 25 is formed by, for example, a pin or caulking. Further, the connecting portion 16 is formed to be tapered in a side view as shown in FIG. A hook-like hook 14 refracted in a J-shape is provided at the tip of the connecting portion 16. As shown in FIG. 1C and the like, the hook 14 is formed such that the tip 14a is thinner than the connecting portion 16 and the needle stem 13, and can enter a groove 20b (described later) of the spatula 20. Yes.

  In this embodiment, the tip end side of P1 shown in FIG. 1C or the like is the hook 14, the connection portion 16 is between P1 and P3, and the cheek portion 15 is between P3 and P7. Yes, the rear end side of P7 is the needle stem 13.

  Further, in the present embodiment, the rear end portion of the spatula 20 is sandwiched between the cheek portions 15 of the needle body 11 from both sides and is held rotatably. Further, a groove 20b having a substantially V-shaped cross section is provided at the tip of the spatula 20, and the knocker is brought into contact with the hook 14 by receiving the tip 14a of the hook 14 through the groove 20b. It is configured as follows.

  The back surface 20a of the spatula 20 (surface opposite to the surface facing the needle body 11) is mainly composed of two inclined surfaces. That is, the rear end inclined portion 20e formed on the rotating shaft 25 side and the front end inclined portion 20d formed on the front end side with respect to the rear end inclined portion 20e. The rear end inclined portion 20e forms a steeper slope than the front end inclined portion 20d in the knockover state. Further, between the rear end inclined portion 20e and the front end inclined portion 20d, a gentle mountain portion 20c formed with a curved surface (for example, an R shape) is provided. For this reason, the back surface 20a of the spatula 20 is formed so that the inclination angle changes on both sides of the peak portion 20c. When the loop of the knitting yarn S comes out to the front end side along the back surface 20a of the spatula 20 in the knockover state, the loop first slides along the rear end inclined portion 20e, and then passes through the peak portion 20c and then the front end inclined portion 20d. And slides to the tip of the spatula 20.

  By the way, the needle body 11 described above has a curled shape 11b on the back surface 11a which is the surface opposite to the surface facing the spatula 20. When the Bella needle 10 in the knockover state is viewed in the axial direction A from the side surface (see FIG. 1B), this twisted shape 11b is at a position X (at least where the needle body 11 and the back surface 20a of the spatula 20 intersect. P5 line). More specifically, when the Bella needle 10 in the knockover state is viewed in the axial direction A from the side surface, this twisted shape 11b is at least a range from the peak portion 20c of the spatula 20 to the crossing position X (from P4 to P5). Range).

  In the present embodiment, as shown in FIG. 1 and the like, the twisted shape 11b is a shape in which the back surface 11a of the needle body 11 is curved inward. By providing the twisted shape 11b, the back surface 11a of the needle body 11 has a slightly steep angle toward the front end side at a position corresponding to the rear end inclined portion 20e of the spatula 20 (range from P4 to P5). It is formed so as to approach the side 20, and at a position corresponding to the tip inclined portion 20d of the spatula 20 (range from P1 to P4), a position corresponding to the rear end inclined portion 20e of the above-described spatula 20 (from P4). It is formed so as to approach the side of the spatula 20 with a gentler inclined surface than the range up to P5).

  By the way, in the conventional structure as shown in FIGS. 7-9, when the loop of the knitting yarn S passes the knocker Bella 20, a sudden frictional resistance is generated between the Bella needle 10 and the knitting yarn S. There was a case.

  FIG. 7A illustrates a case where the loop length of the knitting yarn S is the shortest yarn length that can be stretched around the needle body 11 and the spatula 20 on a plane perpendicular to the axial direction A of the needle body 11. (Refer to FIG. 7C, etc.) is a graph showing the increase and decrease of the loop length. FIG. 9 is a table showing loop lengths in P1 to P10. As shown in these drawings, the loop length increases suddenly in the range from P5 to P3 because the twisted shape 11b does not exist in the conventional structure. As described above, a sudden frictional resistance may occur between the spatula needle 10 and the knitting yarn S due to a sudden increase in the loop length. Further, after the loop length suddenly increases in the range from P5 to P3, the loop length reaches the first peak in P3, and then the loop length decreases in the range from P5 to P3, and then again from P3 to P1. The loop length increases again in the range up to. Since the loop length increases and decreases in this way, there is a problem that the frictional resistance is not stable.

  In this regard, according to the present embodiment, as shown in FIG. 1A and FIG. 3, the loop length gradually increases in the range from P5 to P1. In other words, the loop length according to the present embodiment is configured such that the loop of the knitting yarn S gradually increases and does not decrease until the loop of the knitting yarn S moves to the tip side along the back surface 20a of the spatula 20 and comes out of the spatula 20. . According to such a configuration, the loop length can be gradually increased, and the loop of the knitting yarn S can be smoothly pulled out from the tip of the spatula needle 10 while suppressing a rapid variation in frictional resistance. Further, since the loop length does not increase or decrease until the loop comes off from the tip of the spatula needle 10, the frictional resistance can be stabilized.

  And since the back surface 11a of the needle body 11 according to the present embodiment is gradually inclined in the taper direction to the tip, the back surface 11a of the needle body 11 is not caught after the loop of the knitting yarn S comes off from the spatula 20. Thus, it can be configured so that the tip of the Bella needle 10 can be smoothly removed.

  In addition, in above-mentioned embodiment, although the twist shape 11b was made into the shape where the back surface 11a of the needle | hook main body 11 curved inside, it is not restricted to this. That is, instead of the curved shape, or in addition to the curved shape, the chamfered shape formed on the back surface 11a of the needle body 11 may be a rounded shape 11b. Specifically, as shown in FIGS. 4 to 6, the curled shape 11 b may be formed by chamfering the corner on the back surface 11 a side of the needle body 11.

  As described above, according to the present embodiment, the needle body 11 is provided with the curled shape 11b on the back surface 11a, which is the surface opposite to the surface facing the spatula 20, and the curled shape 11b is formed in a knockover state. When the needle 10 is viewed in the axial direction A from the side surface, the needle body 11 and the back surface 20a of the spatula 20 are at least crossed. According to such a configuration, it is possible to prevent the frictional resistance from abruptly changing when the loop of the knitting yarn S rides on the spatula 20. That is, in the conventional configuration, when the loop of the knitting yarn S comes out to the front end side along the back surface 20a of the spatula 20 in the knockover state, the loop of the knitting yarn S rides on the back surface 20a of the spatula 20 and starts to slide. As a result, the loop of the knitting yarn S was suddenly widened, and the frictional resistance changed rapidly. In this regard, according to the present embodiment, since the twisted shape 11b is provided, the loop of the knitting yarn S is not suddenly expanded even immediately after riding on the spatula 20, and the knitting yarn S is gently expanded. Since the loop is expanded, the frictional resistance between the spatula needle 10 and the knitting yarn S is stabilized, and a clean fabric can be knitted. Moreover, since the knitting resistance is small, the power consumption of the knitting machine can be suppressed, and the breakage of the spatula needle 10 can be suppressed.

DESCRIPTION OF SYMBOLS 10 Bella needle 11 Needle main body 11a Back surface 11b Twist shape 13 Needle stem 14 Hook 14a Tip 15 Teak part 16 Connection part 20 Bella 20a Back side 20b Groove part 20c Mountain part 20d Tip inclination part 20e Rear end inclination part 25 Rotating shaft S Knitting thread X Crossing position A Axial direction

  The present invention relates to a Bella needle provided with a hook and a Bella at the tip, and more particularly, to a Bella needle that prevents a sudden knitting resistance from occurring.

  At present, as a needle for knitting, a spatula needle is widely used in circular knitting machines and flat knitting machines (see, for example, Patent Document 1).

Published Utility Sho 61-168188

When a stitch is formed with this type of Bella needle, a movement of pulling out the tip of the Bella needle from the loop of the knitting yarn occurs. Specifically, the loop of the knitting yarn is formed so as to come out to the tip side of the needle along the back surface of the spatula in the knockover state where the spatula contacts the hook. At this time, if the loop of the knitting yarn is small, the loop may narrow down the portion covered by the spatula and the hook, and the frictional resistance between the spatula needle and the yarn may increase. Then, a sudden change in the frictional resistance becomes a load on the thread or needle, causing damage to the fabric or the needle.
Then, this invention makes it a subject to provide the Bella needle which can suppress the rapid fluctuation | variation of frictional resistance.

The present invention has been made to solve the above-described problems, and is characterized by the following.
The invention according to claim 1 is a spatula needle comprising a needle body having a hook-like hook at the tip, and a spatula attached to the needle body so as to be pivotable and detachable from the hook. In the knockover state in which the spatula is in contact with the hook, a loop of knitting yarn is formed so as to come out toward the tip side along the back surface of the spatula, and the needle body has a surface facing the spatula, Is provided with a curled shape on the back surface which is the opposite surface, and the curled shape is such that at least the needle main body and the back surface of the spatula intersect when the knocker-over beveled needle is viewed in the axial direction from the side. It is provided to the position to be.

  The invention described in claim 2 is characterized in that, in addition to the features of the invention described in claim 1, the twisted shape is a shape in which the back surface of the needle body is curved inward.

  The invention described in claim 3 is characterized in that, in addition to the features of the invention described in claim 1 or 2, the beveled shape is a chamfered shape formed on the back surface of the needle body.

  The invention according to claim 4 is characterized in that, in addition to the feature point of the invention according to any one of claims 1 to 3, the back surface of the needle body is gradually inclined in a tapering direction to the tip. To do.

  In addition to the features of the invention described in any one of the first to fourth aspects described above, the invention according to a fifth aspect is characterized in that the shortest yarn length that can be stretched around the needle body and the spatula is determined by the loop of the knitting yarn. When the length of the knitting yarn is long, the loop length of the knitting yarn gradually increases and does not decrease until the loop of the knitting yarn moves to the tip side along the back surface of the spatula and comes out of the spatula.

  The invention according to claim 1 is as described above, and the needle main body has a curled shape on the back surface that is the surface opposite to the surface facing the spatula, and the curled shape is formed by pulling the bera needle in a knockover state from the side surface. When viewed in the axial direction, at least a position where the needle body and the back surface of the spatula intersect is provided. According to such a configuration, it is possible to prevent the frictional resistance from rapidly changing when the loop of the knitting yarn rides on the spatula. That is, in the conventional configuration, when the loop of the knitting yarn comes out to the tip side along the back surface of the spatula in the knockover state, the knitting yarn loops suddenly when the loop of the knitting yarn rides on the back surface of the spatula and starts to slide. The loop was widened, causing a sudden change in frictional resistance. In this regard, according to the present invention, since the twisted shape is provided, the loop of the knitting yarn is not suddenly expanded even immediately after riding on the spatula, and the loop of the knitting yarn is gently expanded. As a result, the frictional resistance between the Bella needle and the thread is stabilized, and a clean fabric can be knitted. Moreover, since the knitting resistance is small, the power consumption of the knitting machine can be suppressed and the breakage of the needle can be suppressed.

  The invention according to claim 2 is as described above, and the twisted shape is a shape in which the back surface of the needle body is curved inward. According to such a configuration, when the loop of the knitting yarn slides on the back surface of the spatula, the shape of the loop does not change greatly, so that fluctuations in frictional resistance can be suppressed.

  Moreover, invention of Claim 3 is as above-mentioned, and the twist shape is a chamfering shape formed in the back surface of a needle | hook main body. According to such a configuration, the loop of the knitting yarn can be prevented from being suddenly expanded, and the yarn can be prevented from being rubbed at the corners on the back surface of the needle body.

  The invention according to claim 4 is as described above, and the back surface of the needle body is gradually inclined in a tapering direction to the tip. According to such a configuration, the loop of the knitting yarn can be easily removed from the tip of the spatula needle.

  Further, the invention according to claim 5 is as described above, and the loop length of the knitting yarn gradually increases until the loop of the knitting yarn moves to the tip side along the back surface of the spatula and comes out of the spatula. Does not decrease. According to such a configuration, since the loop length does not increase or decrease until the loop comes off from the tip of the bevel needle, the loop length can be increased gradually, and the rapid variation of the frictional resistance can be suppressed and the knitting yarn smoothly The loop can be removed from the tip of the Bella needle.

It is a figure which shows the knockover state of the Bella needle which concerns on 1st Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end view when cut by a vertical plane. It is a figure which shows the clear state of the Bella needle which concerns on 1st Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end elevation when cut along a vertical plane. It is a table | surface which shows the loop length of the Bella needle which concerns on 1st Embodiment. It is a figure which shows the knockover state of the Bella needle which concerns on 2nd Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end view when cut by a vertical plane. It is a figure which shows the clear state of the Bella needle which concerns on 2nd Embodiment, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With respect to an axial direction It is an end elevation when cut along a vertical plane. It is a table | surface which shows the loop length of the Bella needle which concerns on 2nd Embodiment. It is a figure which shows the knock-over state of the conventional Bella needle, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) With a surface perpendicular | vertical with respect to an axial direction It is an end elevation when cut. It is a figure which shows the clear state of the conventional Bella needle, Comprising: (a) The graph which shows increase / decrease in loop length, (b) The partially expanded side view of a front-end | tip part, (c) It cut | disconnects by a surface perpendicular | vertical to an axial direction FIG. It is a table | surface which shows the loop length of the conventional Bella needle.

Embodiments of the present invention will be described with reference to the drawings.
The spatula needle 10 according to the present embodiment is used by being attached to a circular knitting machine or a flat knitting machine as a knitting needle, and as shown in FIG. A needle body 11 provided, and a spatula 20 attached to the needle body 11 so as to be rotatable and capable of being attached to and detached from the hook 14. The spatula needle 10 knits the fabric through yarn feeding and loop formation processes by opening and closing the spatula 20.

  Specifically, the spatula needle 10 is moved back and forth in the axial direction A by a knitting machine, and in conjunction with the back and forth operation, the spatula 20 is hooked 14 as shown in FIG. The fabric is knitted by alternately repeating the knock-over state in contact with and the clear state in which the spatula 20 is separated from the hook 14 and opens the hook 14 as shown in FIG.

  For example, by moving the Bella needle 10 in the axial direction A by the knitting machine, the clear hook 14 enters the loop of the knitting yarn S, and the yarn is held by the hook 14 of the Bella needle 10 on the other side of the loop. Thereafter, by moving the spatula needle 10 in the retracting direction, when the hook 14 is pulled out of the loop, the spatula 20 is closed by the loop and a knockover state is established, and the loop of the knitting yarn S follows the back surface 20a of the spatula 20. Pull out to the tip side. By this series of operations, the yarn can be passed through the loop to form a stitch. When the spatula needle 10 is moved again in the entering direction, the spatula 20 is opened by the tension of the thread that the hook 14 has gripped, and the clear state is established. The clear Bella needle 10 releases the gripped thread and enters the next loop.

  The needle body 11 according to the present embodiment is provided between the cheek portion 15 and the hook 14, a bar-shaped needle stem 13, a cheek portion 15 that is provided on the distal end side of the needle stem 13 and supports the spatula 20. And a connection unit 16. The cheek portion 15 is provided with a rotation shaft 25 that pivotally supports the spatula 20 in a rotatable manner. The rotation shaft 25 is formed by, for example, a pin or caulking. Further, the connecting portion 16 is formed to be tapered in a side view as shown in FIG. A hook-like hook 14 refracted in a J-shape is provided at the tip of the connecting portion 16. As shown in FIG. 1C and the like, the hook 14 is formed such that the tip 14a is thinner than the connecting portion 16 and the needle stem 13, and can enter a groove 20b (described later) of the spatula 20. Yes.

  In this embodiment, the tip end side of P1 shown in FIG. 1C or the like is the hook 14, the connection portion 16 is between P1 and P3, and the cheek portion 15 is between P3 and P7. Yes, the rear end side of P7 is the needle stem 13.

  Further, in the present embodiment, the rear end portion of the spatula 20 is sandwiched between the cheek portions 15 of the needle body 11 from both sides and is held rotatably. Further, a groove 20b having a substantially V-shaped cross section is provided at the tip of the spatula 20, and the knocker is brought into contact with the hook 14 by receiving the tip 14a of the hook 14 through the groove 20b. It is configured as follows.

  The back surface 20a of the spatula 20 (surface opposite to the surface facing the needle body 11) is mainly composed of two inclined surfaces. That is, the rear end inclined portion 20e formed on the rotating shaft 25 side and the front end inclined portion 20d formed on the front end side with respect to the rear end inclined portion 20e. The rear end inclined portion 20e forms a steeper slope than the front end inclined portion 20d in the knockover state. Further, between the rear end inclined portion 20e and the front end inclined portion 20d, a gentle mountain portion 20c formed with a curved surface (for example, an R shape) is provided. For this reason, the back surface 20a of the spatula 20 is formed so that the inclination angle changes on both sides of the peak portion 20c. When the loop of the knitting yarn S comes out to the front end side along the back surface 20a of the spatula 20 in the knockover state, the loop first slides along the rear end inclined portion 20e, and then passes through the peak portion 20c and then the front end inclined portion 20d. And slides to the tip of the spatula 20.

  By the way, the needle body 11 described above has a curled shape 11b on the back surface 11a which is the surface opposite to the surface facing the spatula 20. When the Bella needle 10 in the knockover state is viewed in the axial direction A from the side surface (see FIG. 1B), this twisted shape 11b is at a position X (at least where the needle body 11 and the back surface 20a of the spatula 20 intersect. P5 line). More specifically, when the Bella needle 10 in the knockover state is viewed in the axial direction A from the side surface, this twisted shape 11b is at least a range from the peak portion 20c of the spatula 20 to the crossing position X (from P4 to P5). Range).

  In the present embodiment, as shown in FIG. 1 and the like, the twisted shape 11b is a shape in which the back surface 11a of the needle body 11 is curved inward. By providing the twisted shape 11b, the back surface 11a of the needle body 11 has a slightly steep angle toward the front end side at a position corresponding to the rear end inclined portion 20e of the spatula 20 (range from P4 to P5). It is formed so as to approach the side 20, and at a position corresponding to the tip inclined portion 20d of the spatula 20 (range from P1 to P4), a position corresponding to the rear end inclined portion 20e of the above-described spatula 20 (from P4). It is formed so as to approach the side of the spatula 20 with a gentler inclined surface than the range up to P5).

  By the way, in the conventional structure as shown in FIGS. 7-9, when the loop of the knitting yarn S passes the knocker Bella 20, a sudden frictional resistance is generated between the Bella needle 10 and the knitting yarn S. There was a case.

FIG. 7A illustrates a case where the loop length of the knitting yarn S is the shortest yarn length that can be stretched around the needle body 11 and the spatula 20 on a plane perpendicular to the axial direction A of the needle body 11. (Refer to FIG. 7C, etc.) is a graph showing the increase and decrease of the loop length. FIG. 9 is a table showing loop lengths in P1 to P10. As shown in these drawings, the loop length increases suddenly in the range from P5 to P3 because the twisted shape 11b does not exist in the conventional structure. As described above, a sudden frictional resistance may occur between the spatula needle 10 and the knitting yarn S due to a sudden increase in the loop length. Further, after the loop length suddenly increases in the range from P5 to P3, the loop length reaches the first peak in P3 , and then the loop length decreases in the range from P3 to P2 , and then again from P2 to P1 The loop length increases again in the range up to. Since the loop length increases and decreases in this way, there is a problem that the frictional resistance is not stable.

  In this regard, according to the present embodiment, as shown in FIG. 1A and FIG. 3, the loop length gradually increases in the range from P5 to P1. In other words, the loop length according to the present embodiment is configured such that the loop of the knitting yarn S gradually increases and does not decrease until the loop of the knitting yarn S moves to the tip side along the back surface 20a of the spatula 20 and comes out of the spatula 20. . According to such a configuration, the loop length can be gradually increased, and the loop of the knitting yarn S can be smoothly pulled out from the tip of the spatula needle 10 while suppressing a rapid variation in frictional resistance. Further, since the loop length does not increase or decrease until the loop comes off from the tip of the spatula needle 10, the frictional resistance can be stabilized.

  And since the back surface 11a of the needle body 11 according to the present embodiment is gradually inclined in the taper direction to the tip, the back surface 11a of the needle body 11 is not caught after the loop of the knitting yarn S comes off from the spatula 20. Thus, it can be configured so that the tip of the Bella needle 10 can be smoothly removed.

  In addition, in above-mentioned embodiment, although the twist shape 11b was made into the shape where the back surface 11a of the needle | hook main body 11 curved inside, it is not restricted to this. That is, instead of the curved shape, or in addition to the curved shape, the chamfered shape formed on the back surface 11a of the needle body 11 may be a rounded shape 11b. Specifically, as shown in FIGS. 4 to 6, the curled shape 11 b may be formed by chamfering the corner on the back surface 11 a side of the needle body 11.

  As described above, according to the present embodiment, the needle body 11 is provided with the curled shape 11b on the back surface 11a, which is the surface opposite to the surface facing the spatula 20, and the curled shape 11b is formed in a knockover state. When the needle 10 is viewed in the axial direction A from the side surface, the needle body 11 and the back surface 20a of the spatula 20 are at least crossed. According to such a configuration, it is possible to prevent the frictional resistance from abruptly changing when the loop of the knitting yarn S rides on the spatula 20. That is, in the conventional configuration, when the loop of the knitting yarn S comes out to the front end side along the back surface 20a of the spatula 20 in the knockover state, the loop of the knitting yarn S rides on the back surface 20a of the spatula 20 and starts to slide. As a result, the loop of the knitting yarn S was suddenly widened, and the frictional resistance fluctuated rapidly. In this regard, according to the present embodiment, since the twisted shape 11b is provided, the loop of the knitting yarn S is not suddenly expanded even immediately after riding on the spatula 20, and the knitting yarn S is gently expanded. Since the loop is expanded, the frictional resistance between the spatula needle 10 and the knitting yarn S is stabilized, and a clean fabric can be knitted. Moreover, since the knitting resistance is small, the power consumption of the knitting machine can be suppressed, and the breakage of the spatula needle 10 can be suppressed.

DESCRIPTION OF SYMBOLS 10 Bella needle 11 Needle main body 11a Back surface 11b Twist shape 13 Needle stem 14 Hook 14a Tip 15 Teak part 16 Connection part 20 Bella 20a Back side 20b Groove part 20c Mountain part 20d Tip inclination part 20e Rear end inclination part 25 Rotating shaft S Knitting thread X Crossing position A Axial direction

Claims (5)

A needle body with a hook-like hook at the tip;
A spatula attached to the needle body so as to be pivotable and attachable to and detachable from the hook;
A Bella needle with
In the knockover state in which the spatula is in contact with the hook, a loop of knitting yarn is formed so as to come out to the tip side along the back of the spatula,
The needle body has a curled shape on the back surface that is the surface opposite to the surface facing the spatula,
The beveled shape is provided to at least a position where the needle body and the back surface of the spatula intersect when the knocker-over beveled needle is viewed from the side in the axial direction. needle.   The Bella needle according to claim 1, wherein the twisted shape is a shape in which a back surface of the needle body is curved inward.   The bevel needle according to claim 1 or 2, wherein the twisted shape is a chamfered shape formed on a back surface of the needle body.   4. The Bella needle according to claim 1, wherein the back surface of the needle body is gradually inclined in a tapering direction to the tip. When the shortest yarn length that can be stretched around the needle body and the spatula is the loop length of the knitting yarn,
The loop length of the knitting yarn is gradually increased and does not decrease until the loop of the knitting yarn moves to the tip side along the back surface of the spatula and comes out of the spatula. The spatula needle according to any one of the above.

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