JP3814276B2 - Vertical full rotation bit - Google Patents

Description

The present invention relates to a vertical full rotation hook.

  FIG. 16 is a front view showing a conventional vertical full rotation rotary hook 1 according to the prior art. FIG. 17 is a bottom view showing the inner hook 1. FIG. 18 is a front view showing a bobbin case 2 of a conventional vertical full rotation rotary hook. FIG. 19 is a cross-sectional view showing the bobbin case 2. The vertical full rotation hook is provided in such a manner that an inner hook 1 is rotatably fitted to the outer hook in an outer hook provided to be rotatable around a horizontal axis, and a bobbin case 2 is mounted on the inner hook 1. .

The inner shuttle 1 has a peripheral wall 3 and a bottom wall 4, and the bobbin case 2 has a peripheral wall 5 and a bottom wall 6. The bobbin case 2 is fitted into the inner hook 1 with the peripheral wall 5 of the bobbin case 2 disposed on the radially inner side of the peripheral wall 3 of the inner hook 1. The bobbin case 2 stores a bobbin. In this sewing machine, the outer hook is rotationally driven to supplement the needle thread provided by the needle, and the bobbin thread and the needle thread are engaged with each other to form a seam. Such a vertical full rotation hook similar to the conventional vertical full rotation hook is disclosed in Patent Document 1, for example.

Japanese Patent Laid-Open No. 2002-985

Until the conventional full rotation, the bobbin case 2 is provided on the radially inner side of the peripheral wall 3 of the inner shuttle 1, and the bobbin is stored on the radially inner side of the peripheral wall 5 of the bobbin case 2. Because of this configuration, the space in which the bobbin is stored becomes a small space that is restricted. If the space for storing the bobbin is small, the length of the bobbin thread that can be stored is naturally reduced. In order to increase the efficiency, it is preferable that the length of the bobbin thread that can be stored is as large as possible, and a vertical full rotation rotary hook that has a large length of the bobbin thread that can be stored is desired.

An object of the present invention is to provide a vertical full-rotation rotary hook having a large retractable length dimension for bobbin yarn.

The present invention is attached to an outer hook provided to be rotatable around the horizontal rotation axis in the direction of rotation of the outer hook, an inner hook fitted into the outer hook and held rotatably with respect to the outer hook, and the inner hook. A vertical full turn hook with a bobbin case
The inner kama
Having a peripheral wall and a bottom continuous to one end side in the axial direction of the peripheral wall;
The peripheral wall of the inner shuttle has a bottom side portion near the bottom and an open end side portion near the open end,
The open end side portion of the inner wall of the inner shuttle is in the direction of the outer shuttle rotation from the first boundary position that is vertically above the rotation axis and the position that is vertically below the rotation axis in a state where the vertical all-rotation shuttle is provided on the sewing machine. The second boundary position is formed from the first boundary position to the second boundary position in the direction opposite to the outer shuttle rotation direction between the second boundary position and the second boundary position,
In the bobbin case, a bobbin thread lead-out port is formed at a position shifted in the axial direction from the abutting portion between the bottom side portion of the inner wall of the inner hook and the peripheral wall of the bobbin case,
The bobbin case
Having a peripheral wall and a bottom continuous to one end side in the axial direction of the peripheral wall;
The peripheral wall of the bobbin case extends from the first boundary position to the second boundary position in the outer hook rotation direction between the first boundary position and the second boundary position in a state where the vertical full rotation rotary hook is provided on the sewing machine. Formed,
The peripheral wall of the inner hook and the peripheral wall of the bobbin case are formed by the open end side portion of the peripheral wall of the inner hook and the peripheral wall of the bobbin case abutting in the circumferential direction, and the bottom side portion of the peripheral wall of the inner hook and the peripheral wall of the bobbin case Is a full vertical rotation characterized by being axially butted.

According to the present invention, the peripheral wall of the inner hook and the peripheral wall of the bobbin case are formed only in regions that are shifted from each other in the circumferential direction and the axial direction. Therefore, even if the outer diameter of the peripheral wall of the bobbin case is not less than the inner diameter of the inner wall of the inner shuttle, interference between the peripheral wall of the inner shuttle and the peripheral wall of the bobbin case can be prevented, and the outer diameter of the bobbin case can be increased. . This naturally increases the inner diameter of the bobbin case. For example, the inner diameter of the peripheral wall of the bobbin case can be made the same as the inner diameter of the inner wall of the inner shuttle. As a result, the storage space for the bobbin can be increased, and the length of the bobbin thread that can be stored can be increased.
Furthermore, the peripheral wall of the inner hook and the peripheral wall of the bobbin case are abutted at the first boundary position and the second boundary position in the circumferential direction, and the bobbin thread drawing port is located downstream of the first boundary position in the outer hook rotation direction and The bobbin case is formed at a position upstream of the second boundary position in the outer shuttle rotation direction and at a position shifted in the axial direction from the axial abutting portion between the peripheral wall of the inner shuttle and the peripheral wall of the bobbin case. As a result, in a vertical full-rotation rotary hook, even if the peripheral wall of the inner rotary hook and the peripheral wall of the bobbin case are formed in areas that are shifted from each other, the bobbin thread is fitted into the abutting portion between the peripheral wall of the inner rotary hook and the peripheral wall of the bobbin case. The bobbin yarn can be smoothly fed out without being jammed and without hindering the feeding out of the bobbin yarn. Therefore, the quality of the sewn product is not deteriorated, and the work efficiency can be increased.

Further, the present invention is characterized in that the axial dimension of the open end side portion of the inner wall of the inner hook is not less than 70% and not more than 80% of the axial dimension of the entire inner wall of the inner hook .

According to the present invention, it is possible to suitably realize a vertical full rotation rotary hook in which the peripheral wall of the inner rotary hook and the peripheral wall of the bobbin case are formed in regions shifted from each other and can achieve smooth feeding of the bobbin yarn. it can.

In the present invention, the inner diameter of the inner wall of the inner hook and the inner diameter of the peripheral wall of the bobbin case are formed substantially the same ,
The inner peripheral surface of the inner wall of the inner shuttle and the inner peripheral surface of the peripheral wall of the bobbin case are formed in the same cylindrical surface shape .

According to the present invention, the inner diameter of the inner wall of the inner casing and the inner diameter of the peripheral wall of the bobbin case are substantially the same, and the accommodation space of the bobbin can be made as large as possible. Therefore, the length of the bobbin thread that can be stored can be increased as much as possible. Furthermore by an inner peripheral surface facing the space for accommodating the bobbin on the same cylindrical surface, it is possible to enable smooth feeding of the bobbin thread to be accommodated.

According to the present invention, the storage space for the bobbin can be increased, and the length of the bobbin thread that can be stored can be increased. Therefore, the amount of sewing that can be performed by the stored bobbin thread can be increased, and the working efficiency can be increased.
Further, even if the inner wall of the inner shuttle and the peripheral wall of the bobbin case are formed in areas that are shifted from each other, the bobbin thread is prevented from fitting into the butted portion of the inner wall of the inner hook and the peripheral wall of the bobbin case. It is possible to realize a vertical full-rotation rotary hook that can achieve a smooth feeding of the bobbin yarn without hindering the feeding of the yarn. Therefore, the quality of the sewn product is not deteriorated, and the work efficiency can be increased.

Further, according to the present invention, it is possible to realize a suitable vertical full rotation hook .

Further, according to the present invention, the bobbin accommodation space can be maximized as much as possible, and the length of the bobbin yarn that can be accommodated can be increased as much as possible. Furthermore, the inner peripheral surface facing the space for storing the bobbin can be formed into the same cylindrical surface, and the stored bobbin yarn can be smoothly fed out. Thus, it is possible to realize a vertical full-rotation rotary hook that does not cause deterioration in quality and that can increase work efficiency.

  FIG. 1 is a cross-sectional view showing a vertical full rotation hook 10 according to an embodiment of the present invention. FIG. 2 is a front view showing the sewing machine hook 10. FIG. 3 is a rear view showing the vertical full rotation hook 10. FIG. 4 is a cross-sectional view showing a part of the vertical full rotation shuttle 10 cut at a position different from that in FIG. A vertical full rotary hook 10 up to the sewing machine is provided on the sewing machine, and is used to sew a workpiece by forming a seam in cooperation with the needle 11 and other components such as a balance.

  The vertical all-rotation hook 10 includes an outer hook 12 that is rotatably provided around a horizontal rotation axis L10, an inner hook 13 that is fitted into the outer hook 12 and is rotatably held with respect to the outer hook 12; And a bobbin case 14 attached to the shuttle 13. The vertical full-rotation hook 10 is a DP type vertical full-rotation hook up to a vertical full rotation for high-speed zigzag stitching. The DP type vertical full rotation hook is used in a state where the outer hook 12 rotates faster than the DB type vertical full rotation hook, and rotates at a speed of, for example, 8,000 rpm or more.

  The outer hook 12 includes an outer hook main body 15 and a rotary shaft 16, and the outer hook main body 15 and the rotary shaft 16 are provided coaxially and integrally. The outer hook 12 is supported so that the axis of the outer hook main body 15 and the rotary shaft 16 are arranged horizontally and can be rotated around a rotation axis L10 coinciding with the axis. The outer bite main body 15 includes a peripheral wall 17 and a bottom portion 18 connected to one end portion in the axial direction of the peripheral wall 17. The rotary shaft 16 is provided so as to protrude from the bottom 18 of the outer hook body 15 so as to extend to the side opposite to the open end of the outer hook body 15.

  The inner hook body 13 includes an inner hook body 20 and a stud 21, and the inner hook body 20 and the stud 21 are provided coaxially and integrally. The inner rotary hook main body 20 includes a peripheral wall 22 and a bottom 23 that is connected to one end of the peripheral wall 22 in the axial direction. The inner hook 13 is coaxially fitted into the outer hook body 15 and is supported so as to be rotatable relative to each other. The inner hook 13 is supported by placing the bottom 23 on the bottom 18 side of the outer hook 12. The stud 21 is provided so as to protrude from the bottom 23 of the inner main body 20 to the open end side of the inner main body 23.

  The bobbin case 14 includes a bobbin case main body 25, and the bobbin case main body 25 includes a peripheral wall 27 and a bottom portion 28 that is connected to one end of the peripheral wall 27 in the axial direction. The bobbin case 14 is mounted in a state where the bottom portion 28 is disposed on the side opposite to the bottom portion 23 of the inner hook 12 and relative rotation is prevented.

  The bobbin case 14 stores a bobbin. Specifically, a storage space is formed by the bobbin case 14 and the inner hook 13, and the bobbin is stored in the storage space. The bobbin may be a bobbin having a cylindrical part and a flange projecting radially outward from both axial ends of the cylindrical part, and the bobbin thread may be wound around the cylindrical part. It may be a wound bobbin configured to be wound around.

  When the rotational force is transmitted to the rotary shaft 16 from the lower shaft of the sewing machine, the outer rotary hook 12 is rotationally driven in the rotational direction A around the rotational axis L10 in synchronization with the vertical movement of the needle 11. The The outer hook 12 is driven to rotate with the inner hook 13 being prevented from rotating. The outer hook body 15 is formed with a sword tip 30 protruding on the peripheral wall 17 in the rotation direction A, which is one in the circumferential direction. By rotating the outer hook 12, the sewing object is inserted by the needle 11. The resulting loop of needle thread is captured by the sword tip 30 and threaded around the inner shuttle 12. As a result, the needle thread and the bobbin thread are engaged, and the needle thread is pulled up by the balance, thereby forming a seam.

  FIG. 5 is a cross-sectional view showing the outer hook 12. FIG. 6 is a front view showing the outer hook 12. FIG. 7 is a rear view showing the outer hook 12. 8 is a cross-sectional view showing the outer hook 12 cut at a position different from that in FIG. 1 to 4, a rail groove 19 extending in the circumferential direction is formed in the inner peripheral portion of the peripheral wall 17 of the outer shuttle 12. The rotary shaft 16 of the outer shuttle 12 is formed in a substantially cylindrical shape, and a drive shaft 33 which is a shaft connected to the lower shaft or the lower shaft of the sewing machine is inserted and fixed. A rotational force is transmitted to the outer shuttle 12 by the drive shaft 33, and the outer shuttle 12 is rotationally driven around the rotation axis L10.

FIG. 9 is a cross-sectional view showing the inner hook 13. FIG. 10 is a front view showing the inner hook 13. FIG. 11 is a view seen from the direction of the arrow S11 in FIG. FIG. 12 is a rear view showing the inner hook 13. The peripheral wall 22 of the inner hook 13 has a bottom side portion 35 near the bottom 23 and an open end side portion 36 near the open end. In the present embodiment, the axial direction dimension W36 of the open end side portion 36 is 70% to the axial dimension W22 of the entire peripheral wall 22 of the inner hook 13 as shown in, for example, Formula (1) and Formula (2). The size may be 80%, but is not limited to this.
W36 = W22 × K (1)
0.7 ≦ K ≦ 0.8 (2)

  The bottom side portion 35 is formed in a cylindrical shape over the entire circumference in the circumferential direction. The open end side portion 36 is formed along a virtual cylindrical surface along the bottom side portion 35 only in a part in the circumferential direction. The bottom side portion 35 and the open end side portion 36 are integrally formed. Therefore, the peripheral wall 22 of the inner hook 13 is formed in a shape in which a part in the circumferential direction of the portion on the open end side is cut out from the short cylinder.

  More specifically, the open end side portion 36 is provided in the sewing machine, and is an angular position (hereinafter referred to as “first boundary position”) that is vertically above the rotation axis L1 that coincides with the axis of the inner hook 13. Between the first boundary position P1 and the outer hook rotation direction A between P1 and a position P2 that is shifted in the outer hook rotation direction A from the angular position vertically below the rotation axis L1 (hereinafter referred to as “second boundary position”) P2. To the second boundary position P2 in the opposite direction. In other words, the open end side portion 36 is formed in a range of a predetermined angle θ1 from the first boundary position P1 to the second boundary position P2 at a portion upstream of the outer shuttle rotation direction A. In the present embodiment, the angle θ1 in the range in which the open end side portion 36 is formed may be 150 degrees, for example.

  A rail 24 extending in the circumferential direction is formed on the outer peripheral portion of the peripheral wall 22 of the inner shuttle 13. Specifically, the rail 24 is formed on the bottom side portion 35. The inner hook 13 is coaxially fitted to the outer hook main body 15 in a state where the rail 24 is fitted into the rail groove 19 and is supported so as to be mutually rotatable. The stud 21 is formed in a substantially cylindrical shape, and a locking groove 35 is formed in the free end portion.

  FIG. 13 is a front view showing the bobbin case 14. FIG. 14 is a view seen from the direction of the arrow S14 in FIG. FIG. 15 is a cross-sectional view seen from the section line S15-S15 in FIG. The bobbin case 14 has a cylindrical portion 26 in addition to the bobbin case main body 25, and the bobbin case main body 25 and the cylindrical portion 26 are provided coaxially and integrally.

  The peripheral wall 27 of the bobbin case body 25 is formed along the virtual cylindrical surface only in a part in the circumferential direction. Therefore, the peripheral wall 27 of the bobbin case 14 is formed in a shape in which a part of the short cylinder in the circumferential direction is cut away.

  More specifically, the peripheral wall 27 of the bobbin case 14 is provided in the sewing machine, and the remaining angle excluding the angular range in which the open end side portion 36 of the peripheral wall 22 of the inner hook 13 is formed in the circumferential direction. Formed in the range. In practice, in the present embodiment, the first boundary position P1 and the second boundary position P2 are formed from the first boundary position P1 to the second boundary position P2 toward the outer rotary rotation direction A. Yes. In other words, the peripheral wall 27 of the bobbin case 14 is formed in a range of a predetermined angle θ2 from the first boundary position P1 to the second boundary position P2 at the downstream side in the outer hook rotation direction A. The angle θ2 in the range in which the peripheral wall 27 of the bobbin case 14 is formed is 360 ° or less and the angle θ1 in the range in which the open end side portion 36 is formed (θ2 ≦ 360−θ1). It may be 210 degrees.

  The cylinder part 36 is a hollow right cylindrical shape, and the insertion hole 37 penetrated in an axial direction is formed. The cylindrical portion 36 is provided so as to protrude from the bottom portion 28 of the bobbin case body 25 to the open end side of the bobbin case 14.

  Locking means 40 is provided on the bottom 28 of the bobbin case 14. The locking means 40 is slidably provided, and includes a latch 41 that is spring-biased toward one side and an operation piece 42 for operating the latch 41. The bobbin case 14 is locked by fitting the latch 41 into the locking groove 35 in a state where the stud 21 is inserted through the cylindrical portion 26, and is attached to the inner hook 13.

  The inner diameter of the peripheral wall 27 of the bobbin case 14 is substantially the same (including the same) as the inner diameter of the peripheral wall 22 of the inner hook 13. In the bobbin case 14, both end portions in the circumferential direction of the peripheral wall 27 are abutted in the circumferential direction with both end portions in the peripheral direction of the open end side portion 36 in the peripheral wall 22 of the inner hook 13, respectively. The portion is mounted on the inner hook 13 in a state of being abutted in the axial direction with the end portion on the axially open end side of the bottom side portion 35 in the peripheral wall 22 of the inner hook 13. In other words, the peripheral wall 22 of the inner shuttle 13 and the peripheral wall 28 of the bobbin case 14 virtually create a single cylinder so as to compensate for the lacking portions of each other, and the bobbin storage space, and thus the bobbin yarn The storage space is configured to cooperate and define.

  A bobbin thread tension spring 45 is provided on the peripheral wall 27 of the bobbin case 14 at an intermediate position in the axial direction. The bobbin thread tension spring 45 elastically clamps the bobbin thread housed in the bobbin case 14 as described above in cooperation with the peripheral wall 27 of the bobbin case 14 and adjusts the tension of the drawn bobbin thread. To do. The bobbin thread tension spring 45 keeps the pulled-out position at a constant position so that the bobbin thread is pulled out from an intermediate position with respect to the axial direction of the peripheral wall 27 of the bobbin case 14. Therefore, the bobbin thread is inserted into the peripheral wall 27 of the bobbin case 14 through the drawer port 47 formed at the intermediate position in the axial direction, and the bobbin thread tension spring 45 and the peripheral wall 27 provided so as to cover the drawer port 47 from the outside. And is pulled out through the tip of the bobbin thread tension spring 45.

  According to the present embodiment, the peripheral wall 27 is formed in the bobbin case 14 only in a region shifted from the peripheral wall 22 of the inner shuttle 13 in the circumferential direction and the axial direction. That is, the inner wall 22 and the bobbin case wall 27 are formed only in regions that are offset from each other in the circumferential direction and the axial direction. More specifically, the peripheral wall 22 of the inner hook has at least a portion near the open end, in this embodiment, the open end side portion 36 formed only in a partial region in the circumferential direction, and the peripheral wall 27 of the bobbin case 14 Is formed only in other regions except the region where the open end side portion 36 of the peripheral wall 22 of the inner hook 13 is formed in the circumferential direction.

  Therefore, even if the outer diameter of the peripheral wall 27 of the bobbin case 14 is not smaller than the inner diameter of the peripheral wall 22 of the inner hook 13, interference between the peripheral wall 22 of the inner hook 13 and the peripheral wall 27 of the bobbin case 14 is prevented. The outer diameter can be increased. This naturally increases the inner diameter of the bobbin case 14. In the present embodiment, the inner diameter of the peripheral wall 27 of the bobbin case 14 is substantially the same as the inner diameter of the peripheral wall 22 of the inner hook 13. As a result, the storage space for the bobbin can be increased, and the length of the bobbin thread that can be stored can be increased. Therefore, the amount of sewing that can be performed by the stored bobbin thread can be increased, and the working efficiency can be increased.

Further, in the region where the open end side portion 36 is formed in the axial direction, the peripheral wall 22 of the inner hook 13 and the peripheral wall 27 of the bobbin case 14 are formed so as to avoid the region in the peripheral direction. This region with respect to the axial direction is a region where a pull-out port 47 through which bobbin yarn is pulled out from the bobbin case 14 is formed. Thus, in the region where the bobbin thread drawing port 47 is formed, the abutting portion between the peripheral wall 22 of the inner hook 13 and the peripheral wall 27 of the bobbin case 14 is disposed so as to extend in the axial direction, and at least a direction different from the circumferential direction. It extends to. Therefore, the bobbin yarn wound in the circumferential direction is difficult to fit into the butt portion. The abutting portion between the peripheral wall 27 of the bobbin case 14 and the bottom portion 35 of the inner hook 13 extends in the circumferential direction, but the bobbin thread drawing port 47 is formed at a position shifted in the axial direction from the abutting portion. Therefore, it is difficult for the bobbin thread to be fitted into the butt portion. Therefore, even if the peripheral wall 22 of the inner hook 13 and the peripheral wall 27 of the bobbin case 14 create a single peripheral wall, the bobbin thread can be fed smoothly without any trouble. be able to. Therefore, the quality of the sewn product is not deteriorated, and the work efficiency can be increased.

  Further, as described above, by making the inner diameter of the peripheral wall 22 of the inner shuttle 13 and the inner diameter of the peripheral wall 27 of the bobbin case 14 substantially the same, the accommodation space of the bobbin can be maximized. . Therefore, the length of the bobbin thread that can be stored can be increased as much as possible. The inner peripheral surface facing the storage space for storing the bobbin can be formed into the same cylindrical surface, so that one cylinder can be created, and the stored bobbin yarn can be smoothly fed out.

  The above-described embodiment is merely an example, and the present invention is not limited to the above-described embodiment. For example, the boundary position between the peripheral wall 22 of the inner hook 13 and the peripheral wall 27 of the bobbin case 14 may be formed other than the above-described positions. Further, the present invention is not limited to a vertical full rotation rotary hook for high-speed zigzag stitching, and can be implemented as long as it has an inner hook and a bobbin case.

It is sectional drawing which shows the vertical full rotation shuttle 10 of one Embodiment of this invention. It is a front view which shows the hook 10 of a sewing machine. FIG. 3 is a rear view showing the vertical full rotation hook 10. It is sectional drawing which cut | disconnects the vertical full rotation hook 10 in the position different from FIG. 1, and shows a part. It is sectional drawing which shows the outer hook 12. It is a front view which shows the outer hook 12. It is a rear view which shows the outer hook 12. It is sectional drawing which cuts and shows the outer hook 12 in the position different from FIG. It is sectional drawing which shows the inner hook 13. It is a front view which shows the inner hook 13. It is a figure seen from the direction of arrow S11 of FIG. It is a rear view which shows the inner hook 13. FIG. 3 is a front view showing a bobbin case 14. It is a figure seen from the direction of arrow S14 of FIG. FIG. 14 is a cross-sectional view taken along section line S15-S15 in FIG. It is a front view which shows the inner vertical hook 1 of the vertical full rotation rotary of the prior art. It is a bottom view which shows the inner hook 1. It is a front view which shows the bobbin case 2 of the vertical full rotation rotary hook of a prior art. 3 is a cross-sectional view showing a bobbin case 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vertical full rotation hook 11 Needle 12 Outer hook 13 Inner hook 14 Bobbin case 22 Inner wall peripheral wall 27 Bobbin case peripheral wall 35 Bottom side part 36 Open end side part 47 Drawer outlet P1 1st boundary position P2 2nd boundary position

Claims (3)

An outer hook that can be rotated around the horizontal rotation axis in the direction of the outer hook rotation, an inner hook that fits into the outer hook and is rotatably held with respect to the outer hook, and a bobbin case that is attached to the inner hook. A vertical full rotation kiln with
The inner kama
Having a peripheral wall and a bottom continuous to one end side in the axial direction of the peripheral wall;
The peripheral wall of the inner shuttle has a bottom side portion near the bottom and an open end side portion near the open end,
The open end side portion of the inner wall of the inner shuttle is in the direction of the outer shuttle rotation from the first boundary position that is vertically above the rotation axis and the position that is vertically below the rotation axis in a state where the vertical all-rotation shuttle is provided on the sewing machine. The second boundary position is formed from the first boundary position to the second boundary position in the direction opposite to the outer shuttle rotation direction between the second boundary position and the second boundary position,
In the bobbin case, a bobbin thread lead-out port is formed at a position shifted in the axial direction from the abutting portion between the bottom side portion of the inner wall of the inner hook and the peripheral wall of the bobbin case,
The bobbin case
Having a peripheral wall and a bottom continuous to one end side in the axial direction of the peripheral wall;
The peripheral wall of the bobbin case extends from the first boundary position to the second boundary position in the outer hook rotation direction between the first boundary position and the second boundary position in a state where the vertical full rotation rotary hook is provided on the sewing machine. Formed,
The peripheral wall of the inner hook and the peripheral wall of the bobbin case are formed by the open end side portion of the peripheral wall of the inner hook and the peripheral wall of the bobbin case abutting in the circumferential direction, and the bottom side portion of the peripheral wall of the inner hook and the peripheral wall of the bobbin case There vertical full rotary kiln, characterized in that the I butting axially.   2. The vertical full rotation rotary hook according to claim 1, wherein the axial dimension of the open end side portion of the inner wall of the inner hook is not less than 70% and not more than 80% of the axial dimension of the entire inner peripheral wall. The inner diameter of the inner wall of the inner shuttle and the inner diameter of the peripheral wall of the bobbin case are formed substantially the same,
The vertical all-rotation rotary hook according to claim 1 or 2, wherein the inner peripheral surface of the inner wall of the inner hook and the inner peripheral surface of the peripheral wall of the bobbin case are formed in the same cylindrical surface shape.

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