JP3202821U - Reel structure - Google Patents

Abstract

The present invention provides a reel structure that winds or unwinds a yarn at high speed and has a fine adjustment function of tension. A case includes a case, a screw lid, a detent unit, and a bobbin. Case 200 includes a bottom part 210, a side wall 220 extending from the bottom part to form a space with the bottom part, and a ring gear 250 provided on the side wall so as to go to the space. The screw lid 500 is laid over the case. The detent unit 400 includes a projecting arm 422 that meshes with the ring gear 250 in the loosening direction and detaches from the ring gear in the radial direction in the tightening direction, and is provided in the space so that one end is connected to the screw cap 500. The bobbin 300 is connected to the detent unit 400 and rotates in conjunction with the detent unit, and the bobbin 300 is provided in the space so that the yarn is wound around the bobbin 300 and interlocked with the bobbin. [Selection] Figure 2

Description

  The present invention relates to a reel structure, and more particularly to a reel structure capable of rapidly winding or feeding a yarn.

  In everyday life, articles are often fastened with yarns such as ropes and ribbons, and the most common fastening means is to pass the yarn back and forth through a hole in the article, for example, lace-up Make a knot and fix it. However, in such a tightening means, the knot is easily loosened by an external force element, and must be reconnected, and it is very inconvenient if the article is not stably tightened.

  In order to solve such a problem, a fastener for adjusting the length of the thread by interference of the internal member, adjusting the tightening tension, rotating and tightening the ribbon, and further fixing, Developed by those skilled in the art. However, in such a fastener, in the case of tightening, the interference force by the internal mechanism must be resisted, so that the tightening speed is slow and time is consumed. Further, in such a fastener, a thread must be pulled to loosen, and since it cannot be loosened depending on the direction of rotation, the form of loosening is considerably limited.

  In view of this, how to effectively improve the winding speed or feeding speed of the fastener and improve the convenience during use has become a goal for those skilled in the art.

  An object of the present invention is to provide a reel structure that can be wound or fed at high speed and has a function of fine adjustment to the degree of tension.

  According to one aspect of the present invention, a reel structure that winds or feeds a yarn, and includes a bottom portion, a side wall that extends from the bottom portion and forms a space with the bottom portion, and a space that protrudes from the bottom portion to the space. A case including a locking member positioned, a ring gear provided on the side wall toward the space, a screw lid covering the case, and provided at an interval and selectively with the locking member The first coupling portion and the second coupling portion to be engaged with each other, and the screw lid and the case mesh with the ring gear in the loosening direction so as not to rotate relatively, and in the radial direction one after another in the tightening direction opposite to the loosening direction. And a detent unit that is provided in the space so that one end is connected to the screw lid, and is connected to the detent unit and rotates in conjunction with the detent unit. Bobbin A bobbin provided in the space so as to be wound and interlocked with the bobbin, and the detent unit has a first position and a second position with respect to the case, and when the detent unit is located at the first position, When the stop member is engaged with the first coupling portion and the screw lid moves the bobbin in the tightening direction so as to rewind the thread to the bobbin, Provided is a reel structure that engages with a second coupling portion, and a protruding arm and a ring gear are separated from each other, and a thread is pulled out so that a bobbin loosens a screw lid and rotates in a rotating direction.

  Accordingly, the winding function or the feeding function can be easily switched by the first position and the second position of the detent unit with respect to the case, and further, the thread is loosened by the engagement relationship between the ring gear and the protruding arm. Avoiding this, the function of tightening the thread is realized. Finally, since the screw lid also cooperates during winding or unwinding, the winding state or unwinding state at that time becomes clear from the operating direction of the screw lid, but the convenience of use is improved.

  According to the reel structure, the detent unit includes a ring body for projecting the protruding arm, and connects the clamp member provided on the screw lid, the screw lid and the clamp member, and the first coupling portion and the first coupling portion. It may further include a moving member including a base column for providing the two coupling portions with an interval along the axial direction of the base column. The first coupling portion may be an outer ring groove provided in the base column, and the second coupling portion may be another outer ring groove provided in the base column. The locking member includes a convex portion corresponding to any of the outer ring grooves. Further, the bobbin may be fitted to the outside of the moving member, the ring body includes internal teeth, the bobbin includes external teeth, and the internal teeth and external teeth mesh with each other. The internal teeth and the external teeth mesh with each other in both the first position and the second position. The screw cap may have a central axis, and the parallel height with respect to the central axis of the external teeth may be greater than the parallel height with respect to the central axis of the protruding arm. The bottom portion further includes a through hole communicating with the space, and the moving member passes through the through hole and is connected to the screw lid, and moves within the through hole while being limited in position.

  According to another aspect of the present invention, a reel structure for winding or unwinding a yarn, the bottom portion, a side wall extending from the bottom portion to form a space with the bottom portion, and a ring provided on the side wall toward the space A case including a gear, a screw lid that covers the case, and the ring lid meshes with the ring gear in the loosening direction so that the screw lid and the case do not rotate relatively, and one after another in the tightening direction opposite to the loosening direction. It includes a protruding arm that detaches from the ring gear in the radial direction, and a detent unit that is provided in the space so that one end is connected to the screw lid, and rotates in conjunction with the detent unit connected to the detent unit. A bobbin wound around the bobbin and provided in the space so as to interlock with the bobbin, and the detent unit has a first position and a second position with respect to the case, the first position If it is located, the screw lid moves the bobbin in the tightening direction and moves it so that the thread is rewound onto the bobbin. However, if it is located in the second position, the projecting arm and the ring gear are separated and the thread is pulled out. Thus, a bobbin provides a reel structure in which the screw lid is loosened and rotationally interlocked in the direction of loosening.

  With this structure, the winding function or the feeding function can be easily switched, and further, the thread is prevented from being loosened by the engagement relationship between the ring gear and the protruding arm, and the thread is tightened and maintained at a predetermined length. Since the screw lid also cooperates during winding or unwinding, the winding state or unwinding state at that time becomes clear from the operating direction of the screw lid, but the convenience of use is improved.

  According to the reel structure, the bobbin may include external teeth, the detent unit may further include a clamp member, the clamp member may be provided on the screw lid, and may include the ring body for projecting the protruding arm, The body includes internal teeth that mesh with external teeth. When the detent unit is located at the first position and the second position, the external teeth and the internal teeth are engaged with each other, and the screw lid and the bobbin are caused to cooperate with each other. The case further includes a locking member positioned in the space so as to protrude from the bottom portion to the space, and the detent unit is provided on the base column that connects the screw lid and the clamp member, and the base column, and A first coupling portion and a second coupling portion, which are provided at intervals along the axial direction of the base column, and selectively engage with the locking member; The moving member may be further included. When the detent unit is located at the second position, the locking member is engaged with the second coupling portion, and when the detent unit is located at the first position, the locking member is coupled with the first coupling portion. Engage. The screw lid may have a central axis, and the parallel height with respect to the central axis of the protruding arm may be greater than the parallel height with respect to the central axis of the external teeth.

1 is a schematic perspective view showing a reel structure according to an embodiment of the present invention. FIG. 2 is a schematic exploded perspective view showing the reel structure of FIG. 1 viewed from an angle. FIG. 2 is a schematic exploded perspective view showing the reel structure of FIG. 1 viewed from another angle. FIG. 4 is a schematic cross-sectional view taken along a cutting line 4-4 of the reel structure of FIG. 1. FIG. 5 is another schematic cross-sectional view showing the reel structure of FIG. 4. It is a typical perspective view which shows the reel structure which concerns on another embodiment of this invention. It is a typical exploded perspective view which shows the reel structure of FIG. 6 seen from a certain angle. FIG. 7 is a schematic exploded perspective view showing the reel structure of FIG. 6 viewed from another angle. FIG. 9 is a schematic cross-sectional view taken along a cutting line 9-9 of the reel structure of FIG. FIG. 10 is another schematic cross-sectional view showing the reel structure of FIG. 9.

  In the following description, numerous practical details are set forth below in order to describe and clearly explain the embodiments of the present invention with reference to the drawings. However, it should be understood that these actual details are not intended to limit the invention. That is, in some of the embodiments of the present invention, these actual details are not essential. Also, to simplify the drawings, certain conventional structures and elements are simply and schematically shown in the drawings, and duplicate elements may be indicated by the same numbers.

  Please refer to FIGS. FIG. 1 is a schematic perspective view showing a reel structure 100 according to an embodiment of the present invention. FIG. 2 is an exploded perspective schematic view showing the reel structure 100 of FIG. 1 viewed from an angle. FIG. 3 is an exploded perspective schematic view of the reel structure 100 of FIG. 1 viewed from another angle. The reel structure 100 is a reel structure for winding or unwinding (not shown) a yarn, and includes a case 200, a bobbin 300, a detent unit 400, and a screw lid 500.

  Case 200 includes a bottom part 210, a side wall 220 extending from bottom part 210 to form space 230 together with bottom part 210, and a ring gear 250 provided on side wall 220 so as to face space 230. A screw lid 500 is placed over the case 200. The detent unit 400 is provided in the space 230 so that one end is connected to the screw lid 500. The detent unit 400 includes a protruding arm 422. In the present embodiment, the number of protruding arms 422 is four, but is not limited thereto. The protruding arm 422 meshes with the ring gear 250 in the loosening direction A1 so that the screw cap 500 and the case 200 do not rotate relative to each other, and in turn from the ring gear 250 in the radial direction in the tightening direction A2 opposite to the loosening direction A1. break away.

  The bobbin 300 is provided in the space 230 so as to connect to the detent unit 400 and rotate in conjunction with the detent unit 400. The thread is wound around the bobbin 300 and interlocked with the bobbin 300. The detent unit 400 has a first position and a second position with respect to the case 200. When the detent unit 400 is located at the first position, the screw lid 500 rotates the bobbin 300 in the tightening direction A2 and rotates the bobbin. Although it moves so that it may rewind to 300, when it is located in a 2nd position, the protrusion arm 422 and the ring gear 250 will separate | separate, a thread | yarn will be pulled out and the bobbin 300 will loosen the screw lid 500 and will carry out rotation interlocking to the direction A1.

  With this structure, it is possible to easily switch the winding or feeding and fine adjustment functions for the degree of tension. Further, the engagement relationship between the ring gear 250 and the projecting arm 422 realizes the function of tightening the yarn while avoiding loosening of the yarn. Finally, since the screw lid 500 also cooperates at the time of winding or unwinding, the winding state or unwinding state at that time becomes clear from the operating direction of the screw lid 500, but for the detailed structure and operation method of this embodiment, Further details will be described below.

  Specifically, in this embodiment, the case 200 further includes a locking member 240 in addition to the bottom portion 210, the side wall 220, and the ring gear 250. Here, although the number of the locking members 240 is illustrated as three, it is not limited to this. The bottom portion 210 includes a through hole 211 (see FIG. 3) that communicates with the space 230. The locking member 240 protrudes from the bottom 210 so as to be provided around the through hole 211, that is, protrudes into the space 230.

  The bobbin 300 has a hollow ring shape and includes external teeth 310 and a fixing member 320. The fixing member 320 is used to fix both ends of the yarn so that the yarn cannot be detached from the bobbin 300. In addition, the yarn can be regularly wound around the bobbin 300 and rotated in different directions along with the bobbin 300 to be tightened or loosened.

  The detent unit 400 includes a connection member 410, a clamp member 420, and a moving member 430, and the protruding arm 422 is provided on the clamp member 420.

  The connection member 410 is provided in the screw lid 500 so as to cooperate with the screw lid 500. The connection member 410 includes an upper hole 411, a lower hole 413 (see FIG. 3), and two fitting portions 412. The upper hole 411 and the lower hole 413 communicate with each other, and both have a hexagonal column shape. The fitting portion 412 is positioned at one end of the connection member 410 toward the screw lid 500, and the two fitting portions 412 are provided to face each other and are used for engagement with the clamp member 420.

  The clamp member 420 includes the protruding arm 422, the ring body 421, and internal teeth 423 (see FIG. 3). The ring body 421 is fitted on the connection member 410, and the protruding arm 422 is protruded outside the ring body 421. Internal teeth 423 are provided inside the ring body 421. The shape of the internal teeth 423 matches the external teeth 310, so that the internal teeth 423 and the external teeth 310 can mesh with each other.

  The moving member 430 includes a base pillar 433, a first coupling part 431, and a second coupling part 432, and the base pillar 433 is used to connect the connection member 410, and the first coupling part 431 and the second coupling part 432 are used. The coupling portion 432 is provided at an interval along the axial direction of the base column 433. One end of the base column 433 toward the screw lid 500 includes a fitting top 434, and the fitting top 434 has a hexagonal column shape and corresponds to the shape of the lower hole 413.

  One end of the screw lid 500 toward the case 200 includes a recessed groove 540 and a protruding column 530 (see FIG. 3). The protruding column 530 has a hexagonal column shape and includes a through hole 520. The protruding column 530 is the center of the recessed groove 540. The through hole 520 penetrates the screw lid 500.

  Specifically, when the reel structure 100 is assembled, first, the clamp member 420 is provided above the bobbin 300, the external teeth 310 and the internal teeth 423 are engaged with each other, and then the connection member 410 is placed below the bobbin 300. Then, the fitting member 412 is engaged with the ring body 421 after passing through the clamp member 420, so that the connection member 410, the clamp member 420, and the bobbin 300 cannot be detached. When the connection member 410, the clamp member 420, and the bobbin 300 are provided in the space 230, the locking member 240 protrudes into the bobbin 300, and the moving member 430 passes through the through hole 211 from below the case 200. Thus, the locking member 240 is engaged with the first coupling portion 431 or the second coupling portion 432. Since the shapes of the fitting top 434 and the lower hole 413 are matched, the fitting top 434 is engaged with the lower hole 413, and the case 200, the detent unit 400, and the bobbin 300 are thus assembled. Finally, the screw lid 500 is covered with the case 200, the protruding column 530 is engaged with the upper hole 411, the clamp member 420 is engaged with the concave groove 540, and the screw 510 is locked to the through hole 520, and the entire reel Complete assembly of structure 100. It should be noted that the above assembling process is only an example, and does not limit the present invention. The detent unit 400 may be an integrally formed element, and is not limited to the above configuration.

  Please refer to FIG. 4 and FIG. Please refer to FIGS. 2 and 3 collectively. FIG. 4 is a schematic cross-sectional view of the reel structure 100 of FIG. 1 taken along the cutting line 4-4. FIG. 5 is another schematic cross-sectional view showing the reel structure 100 of FIG. Since the screw cover 500 of the reel structure 100 has the center axis I and can be moved so as to be pulled up along the center axis I to move the detent unit 400 upward, the detent unit 400 is placed in the case. A first position relative to 200 and a second position. When the detent unit 400 is located at the first position, as shown in FIG. 4, when the locking member 240 is engaged with the first coupling portion 431 and the screw cover 500 is pulled upward, as shown in FIG. As shown, when the detent unit 400 is located at the second position at this time, the locking member 240 is engaged with the second coupling portion 432.

  When the detent unit 400 is located at the first position and the locking member 240 is engaged with the first coupling portion 431, the protruding arm 422 interferes with the ring gear 250 (see FIG. 2). Since the projecting arm 422 has a slight elasticity, when the screw cap 500 rotates the detent unit 400 in the tightening direction A2, the projecting arm 422 receives pressure and detaches from the ring gear 250 constantly. That is, the projecting arm 422 cannot prevent the screw lid 500 from rotating in the tightening direction A2 with respect to the case 200. Therefore, the screw lid 500 rotates the detent unit 400 and the bobbin 300 in the tightening direction A2, The yarn can be rewound onto the bobbin 300. Conversely, when the screw lid 500 rotates in the loosening direction A1, the protruding arm 422 meshes with the ring gear 250, and the screw lid 500 cannot rotate in the loosening direction A1 with respect to the case 200. Can not be pulled out. Therefore, in FIG. 4, the reel structure 100 can only be tightened. Further, the interference between the projecting arm 422 and the ring gear 250 slows down the tightening speed, and the thread does not automatically loosen when the user releases the hand and does not rotate the screw lid 500. You can make adjustments.

  As shown in FIG. 5, when the detent unit 400 is located at the second position and the locking member 240 is engaged with the second coupling portion 432, the protruding arm 422 is separated from the case 200 and the ring gear 250. In order to separate, the screw cap 500 can be rotated from the case 200 in the loosening direction A1 or the tightening direction A2. In addition, since the external teeth 310 and the internal teeth 423 (see FIG. 3) are still meshed, the screw cap 500 and the bobbin 300 can still interlock with each other, and when the thread is pulled out, the screw cap 500 is simultaneously rotated. At this time, the thread can be wound or unwound by being rotated in different directions by the screw cover 500. When the length of the thread reaches a predetermined length, the screw cover 500 is further lowered. Push to switch the detent unit 400 to the first position and tighten the thread.

  In the present embodiment, the first coupling portion 431 is an outer ring groove provided in the base column 433, and the second coupling portion 432 is another outer ring groove provided in the base column 433. The locking member 240 includes a convex portion 241 corresponding to any of the outer ring grooves. In another embodiment, the locking member may include a recess, and the first coupling portion and the second coupling portion may be a projecting ring provided on the base column, so that the projecting ring and the recess are matched. Although engaged, it is not limited to the above.

  4 that the parallel height d2 with respect to the central axis I of the external tooth 310 of the present embodiment is greater than the parallel height d1 with respect to the central axis I of the projecting arm 422, the detent unit 400 is the first. Regardless of whether the external teeth 310 and the internal teeth 423 are engaged with each other regardless of whether the screw cap 500 is positioned at the first position or the second position. Collaborate with.

  Please refer to FIG. 6, FIG. 7 and FIG. FIG. 6 is a schematic perspective view showing a reel structure 110 according to another embodiment of the present invention. 7 is an exploded perspective view schematically showing the reel structure 110 of FIG. 6 as viewed from a certain angle. FIG. 8 is an exploded perspective schematic view showing the reel structure 110 of FIG. 6 viewed from another angle. The basic operating principle of the reel structure 110 is similar to the embodiment described in FIGS. 1 to 5, but there are slight differences in the structure and will be described as follows.

  The reel structure 110 includes a case 200a, a bobbin 300a, a detent unit 400a, and a screw lid 500a. The detent unit 400a includes a clamp member 420a and a moving member 430a. The clamp member 420a includes a ring body 421a, four projecting arms 422a, internal teeth 423a (see FIG. 8), projecting columns 424 (see FIG. 8), and holes 425 (see FIG. 8). 423a and the protruding column 424 are provided on the ring body 421a, the protruding column 424 protrudes to the bobbin 300a, and the hole 425 is provided on the protruding column 424. Further, the structures of the case 200a, the bobbin 300a, and the moving member 430a are similar to those of the embodiment described in FIGS. 1 to 5, but will not be described in detail here. However, it should be particularly noted that in the present embodiment, the fitting top 434a of the moving member 430a is engaged with the hole 425 to interlock the moving member 430a with the clamp member 420a.

  Please refer to FIG. 9 and FIG. Please refer to FIG. 7 and FIG. 8 collectively. FIG. 9 is a schematic cross-sectional view of the reel structure 110 of FIG. 6 along the cutting line 9-9. FIG. 10 is another schematic cross-sectional view showing the reel structure 110 of FIG. In the present embodiment, the screw lid 500a may be pulled upward along the central axis I2, and the first position and the second position with respect to the case 200a are set in the detent unit 400a by the axial movement of the screw lid 500. You can have it.

  As shown in FIG. 9, when the screw cap 500a is not pulled upward, the detent unit 400a is located at the first position, and the protruding arm 422a and the ring gear 250a (see FIG. 7) are engaged with each other. Since the arm 422a can be detached from the ring gear 250a in the tightening direction A2, the screw lid 500a is rotated and the bobbin 300a is rotationally interlocked in the tightening direction A2 to move the thread so as to rewind the bobbin 300a. Since the protruding arm 422a cannot be detached from the ring gear 250a in the loosening direction A1, the thread can be prevented from being loosened, and the purpose of tightening, fine adjustment of the degree of tension, and tightening can be achieved.

  As shown in FIG. 10, when the screw cap 500a is pulled upward, the protruding arm 422a is moved so that the detent unit 400a is located at the second position and away from the case 200a, and the protruding arm 422a and the ring gear 250a are moved. The internal teeth 423a are still engaged with the external teeth 310a (see FIG. 7), the thread is pulled out at this time, and the bobbin 300a rotates and interlocks the screw lid 500a in the loosening direction A1, so that the loose state is established. The thread can be fastened by rotating the screw lid 500a in the fastening direction A2 at high speed.

  9, since the parallel height d2 with respect to the central axis I2 of the external tooth 310a in this embodiment is larger than the parallel height d1 with respect to the central axis I2 of the protruding arm 422a, the detent unit 400a is the first. Regardless of whether the external teeth 310a and the internal teeth 423a are engaged with each other regardless of whether the screw cap 500a is positioned at the first position or the second position. Collaborate with.

  From the above embodiments, the present invention is found to have the following merits.

  First, by rotating the screw lid in different directions according to the interlocking relationship between the screw lid and the bobbin, the objective of rapid winding or feeding is achieved.

  2. The relative first position and second position between the detent unit and the case not only switch the loosening or tightening state, but also fast tighten or finely adjust the tension. A function may be selected. When the detent unit is located at the first position, the tightening speed becomes slow and the tension can be adjusted, and when the detent unit is located at the second position, the screw lid is rotated at high speed and the speed is fast. Can achieve a good tightening effect.

  3. When the detent unit is located at the first position and the second position due to the structural relationship in which the height of the external teeth is higher than the height of the protruding arm, the external teeth and the internal teeth are engaged with each other, and The purpose of cooperating with the bobbin is achieved when the screw cap is located in the first position and the second position.

  Although the present invention has been disclosed in the embodiments as described above, this is not intended to limit the present invention, and those skilled in the art will make various changes and modifications without departing from the spirit and scope of the present invention. be able to. Therefore, the protection scope of the present invention is based on the contents specified in the claims for utility model registration.

100, 110 Reel structure 200, 200a Case
210 Bottom
211 through hole
220 Side wall
230 space
240 Locking member
241 Convex part 250, 250a Ring gear 300, 300a Bobbin 310, 310a External tooth
320 Fixing member 400, 400a Detent unit
410 Connection member
411 Upper hole
412 Fitting part
413 Pilot holes 420, 420a Clamp members 421, 421a Ring bodies 422, 422a Protruding arms 423, 423a Internal teeth
424 protruding column
425 Hole 430, 430a Moving member
431 first coupling part
432 second coupling part
433 Base pillars 434, 434a Mating top 500, 500a Screw cover
510 screws
520 Through hole
530 Protruding pillar
540 Groove
A1 Loosening direction
A2 Tightening direction I, I2 Center axis d1, d2 Height

Claims (12)

A reel structure for winding or unwinding the yarn,
A bottom portion, a side wall extending from the bottom portion to form a space with the bottom portion, a locking member located in the space so as to protrude from the bottom portion to the space, and provided on the side wall toward the space A ring gear, and a case including
A screw lid covering the case;
A first coupling portion and a second coupling portion which are provided at intervals and selectively engage with the locking member, and in the loosening direction so that the screw lid and the case do not rotate relatively. A projecting arm that meshes with the ring gear and that detaches from the ring gear in a radial direction one after another in a fastening direction opposite to the loosening direction, and is provided in the space so that one end is connected to the screw lid A detent unit,
A bobbin provided in the space, connected to the detent unit, interlocked with and rotated with the detent unit, wound with the thread, and coupled with the thread;
With
The detent unit has a first position and a second position with respect to the case. When the detent unit is located at the first position, the locking member engages with the first coupling portion, and the screw When the lid is interlocked so as to rotate the bobbin in the tightening direction and rewind the thread onto the bobbin, the locking member is positioned at the second position. A reel structure in which the projecting arm and the ring gear are separated, the thread is pulled out, and the bobbin rotates and interlocks the screw lid in the loosening direction. The detent unit is
A clamp member provided on the screw lid, including a ring body for projecting the protruding arm;
A moving member having a base column for connecting the screw lid and the clamp member and used for installation of the first coupling portion and the second coupling portion;
Further including
2. The reel structure according to claim 1, wherein the first coupling portion and the second coupling portion are spaced apart from each other along the axial direction of the base column.   The first coupling portion is an outer ring groove provided in the base column, the second coupling portion is another outer ring groove provided in the base column, and the locking member is formed on the outer ring groove. The reel structure according to claim 2, comprising a convex portion corresponding to any of them.   The reel structure according to claim 3, wherein the bobbin is fitted outside the moving member, the ring body includes internal teeth, the bobbin includes external teeth, and the internal teeth and the external teeth mesh with each other.   The reel structure according to claim 4, wherein the internal teeth and the external teeth mesh with each other in both the first position and the second position.   The reel structure according to claim 5, wherein the screw lid has a central axis, and a parallel height of the external teeth with respect to the central axis is higher than a parallel height of the protruding arm with respect to the central axis.   The bottom portion further includes a through hole communicating with the space, the moving member passes through the through hole and is connected to the screw lid, and the moving member moves while being limited in position in the through hole. Item 7. The reel structure according to Item 6. A reel structure for winding or unwinding the yarn,
A case including a bottom, a side wall extending from the bottom and forming a space with the bottom, and a ring gear provided on the side wall toward the space;
A screw lid covering the case;
A projecting arm that meshes with the ring gear in a loosening direction so that the screw lid and the case do not rotate relative to each other and disengages from the ring gear in a radial direction one after another in a tightening direction opposite to the loosening direction; A detent unit provided in the space such that one end is connected to the screw lid;
A bobbin provided in the space, connected to the detent unit, interlocked with and rotated with the detent unit, wound with the thread, and coupled with the thread;
With
The detent unit has a first position and a second position with respect to the case. When the detent unit is located at the first position, the screw lid rotates the bobbin in the tightening direction to interlock the thread. Is moved back to the bobbin, but when it is in the second position, the projecting arm and the ring gear are separated, the thread is pulled out, and the bobbin pulls the screw lid in the loosening direction. Reel structure linked to rotation.   The reel according to claim 8, wherein the screw cap has a central axis, the bobbin includes external teeth, and a parallel height of the external teeth with respect to the central axis is higher than a parallel height of the protruding arm with respect to the central axis. Construction. The detent unit is
The reel structure according to claim 9, further comprising a clamp member provided on the screw lid, wherein the clamp member includes a ring body for projecting the projecting arm, and the ring body includes internal teeth that mesh with the external teeth. .   11. The detent unit according to claim 10, wherein when the detent unit is located at the first position and the second position, both the external teeth and the internal teeth mesh with each other, and the screw lid and the bobbin cooperate with each other. Reel structure as described. The case further includes a locking member located in the space so as to protrude from the bottom portion to the space,
The detent unit includes a base column that connects the screw lid and the clamp member, and is provided on the base column, and is provided at intervals along the axial direction of the base column, and the locking member A moving member including a first coupling portion and a second coupling portion that are selectively engaged;
When the detent unit is located at the second position, the locking member engages with the second coupling portion, and when the detent unit is located at the first position, the locking member The reel structure according to claim 11, which engages with the first coupling portion.

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