JP2012217540A - Cord stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cord stopper capable of suppressing a cap section coming off from a case section.SOLUTION: A cord stopper includes one guide slit 13 penetrating an outer peripheral wall of a case 10, communicating with a hole in an end opening section 12, and extending from a cylindrical end face of the end opening section 12 towards a base end opening section 11 side. A strip-shaped hinge section 20 is connected to the end part on the base end opening section 11 side in the guide slit 13, the hinge section extending from the end towards the end opening section 12 side. The whole of a cap section 30 is fitted into the hole of the end opening section 12 and the guide slit 13, and an outer surface part 33S of the cap section 30, blocking the hole of the end opening section 12, is flush with the cylindrical end face of the end opening section 12.

Description

  The present invention relates to a cord stopper that is attached to an end of a string that is passed through a string such as clothing or a storage bag, and in particular, a cylindrical case part that accommodates a knot formed at the end of the string is formed by a cap part. It relates to a closed cord stopper.

  2. Description of the Related Art Conventionally, as described in Patent Document 1, for example, a resin cord stopper attached to one end of a string passed through a string such as clothing or a storage bag is known. FIGS. 5A and 5B are cross-sectional views showing the internal cross-sectional structure of the cord stopper, and showing the process of attaching the cord stopper to the end of the string.

  As shown in FIG. 5A, a cap portion 70 is formed integrally with a cylindrical case portion 50 of the cord stopper via a belt-like hinge portion 60. A base end opening 51 for inserting the string K into the cylinder of the case portion 50 is formed at the lower cylindrical end of the case portion 50, and the case portion 50 has an upper cylindrical end at the upper cylindrical end. A circular hole-shaped tip opening 52 for drawing the string K out of the 50 cylinders is formed. An inner diameter Ra1 of the distal end opening 52 is larger than an inner diameter Ra2 of the proximal end opening 51, and when the knot portion Ka of the string K pulled out from the distal end opening 52 is pulled back from the proximal end opening 51, the distal end opening It passes through the portion 52 and is locked at the proximal end opening 51.

  The outer peripheral wall 53 of the tip opening 52 is connected to a flexible belt-like hinge portion 60 extending from the thinned portion 54 of the outer peripheral wall 53, and the tip of the hinge portion 60 has a covered truncated cone shape. The cap part 70 is connected. An outer surface 71S having an outer diameter substantially the same as the outer diameter Rb1 of the outer peripheral wall 53 is formed on the disc-shaped closing portion 71 constituting the cap portion 70. The outer surface 71S of the closing portion 71 has a hinge portion. The tips of 60 are connected. Further, a truncated cone-shaped guide protrusion 72 having an outer diameter smaller than the inner diameter Ra1 of the distal end opening 52 projects from a closed end surface 72S that is a surface facing the distal end opening 52 in the closed section 71.

  According to such a configuration, when the cord stopper is attached to the tip of the cord K, first, as shown in FIG. 5A, the tip of the cord K is moved from the state where the tip opening 52 is opened. It is pulled out of the case portion 50 through the proximal end opening 51 and the distal end opening 52. Next, a knot portion Ka is formed at the distal end of the string K, and then the string K is pulled back from the proximal end opening 51. As a result, the knot portion Ka of the string K abuts on the stepped portion 55 in the case portion 50 and cannot be pulled out from the proximal end opening portion 51. Subsequently, when the cap portion 70 rotates through the hinge portion 60 until the closed end surface 72S comes into contact with the cylindrical end surface of the tip opening portion 52, the guide projection 72 opens at the tip opening as shown in FIG. The guide projection 72 enters the tip opening 52 while sliding on the portion 52. As a result, the front end opening 52 of the case portion 50 is closed by the closing portion 71 of the cap portion 70.

JP-A-11-99008

By the way, in the cord stopper described above, the entire tip opening 52 is covered with the closing portion 71 of the cap portion 70, and the tip opening 52 is thereby closed by the cap portion 70. Therefore, in the state where the tip opening 52 is closed by the cap part 70, only the guide protrusion 72 of the cap part 70 is fitted inside the case part 50, and the closed part 71 of the cap part 70 which is the other part. Protrudes outside the case portion 50. And as a result of the cap part 70 becoming easy to rotate via the hinge part 60, obstruction | occlusion of the case part 50 by the cap part 70 will be cancelled | released easily.
This invention is made | formed in view of such a situation, The objective is to provide the cord stopper which can suppress that a cap part remove | deviates from a case part.

  In order to achieve such an object, the invention described in claim 1 includes a cylindrical case portion having a pair of openings facing each other and having different hole sizes, and a large hole of the pair of openings. A small opening that includes a cap portion that closes the large opening portion, the case portion and the cap portion are integrally formed via a flexible hinge portion, and has a small hole of the pair of opening portions. Part is a resin cord stopper that makes it impossible to pull out the knot portion of the string housed inside the case part from the inside of the case part, and penetrates the outer peripheral wall of the case part and the large opening part And further comprising a slit extending from the cylindrical end surface of the large opening toward the small opening. The end of the slit on the small opening side is connected to the large opening from the end. The belt-shaped hinge portion extending to the side The cap portion is coupled to the large opening portion side of the hinge portion, and the entire cap portion is fitted into the hole of the large opening portion and the slit, and the large cap portion of the cap portion is The gist is that the outer surface that closes the hole of the opening is flush with the cylinder end surface of the large opening.

  According to the first aspect of the present invention, the entire cap portion is fitted into the hole and the slit of the large opening, and the hole of the large opening closes the outer surface of the cap portion that closes the hole and the large opening. It is flush with the cylinder end face. Therefore, it is possible to suppress the portion of the cap portion that is exposed outside the case portion from being caught by an object outside the case portion or being recognized by a tactile sensation such as a finger, and thus the cap fitted into the case portion. It becomes possible to suppress that a part remove | deviates from a case part.

  According to the second aspect of the present invention, in the cap portion, a base end portion that is a portion connected to the hinge portion is fitted into the slit, and an outer surface of the base end portion that closes the slit is the The gist is that it is flush with the outer peripheral surface of the case portion.

  According to invention of Claim 2, the base end part of a cap part is engage | inserted in the slit formed in the outer peripheral wall of a case part, and the outer surface of the base end part which plugs up a slit, and the outer peripheral surface of a case part Become the same. Therefore, it is possible to further suppress the portion of the cap portion exposed to the outside of the case portion from being caught by an object outside the case portion or being recognized by a tactile sense such as a finger.

  The invention according to claim 3 is a hole in which the hole of the large opening is expanded from the slit to the inside of the case part, and the cap part has a width smaller than the width of the slit at the tip. The gist is that it has a tapered shape.

  According to invention of Claim 3, the front-end | tip of a cap part is a taper shape which can be inserted in a slit. For this reason, when the cap portion is fitted into the large opening, it is easy to fit the tip of the case portion into the large opening from the slit. With such a configuration, it is possible to reduce the angle at which the hinge portion is bent as compared with the case where the cap portion is fitted in the direction in which the hole of the large opening extends.

  According to a fourth aspect of the present invention, the case portion has a locking portion formed of a step between an inner surface of the hole of the large opening and an inner surface of the slit, and a tip portion of the cap portion is the cap portion. The cap portion has a locked portion formed by a step between a distal end portion of the cap portion and a proximal end portion of the cap portion, and the cap portion is expanded in the direction of the step. The gist is that the locking portion and the locked portion are engaged by being fitted into the hole of the large opening.

  According to the fourth aspect of the present invention, the cap portion is fitted into the hole of the large opening, so that the locking portion of the case portion and the locked portion of the cap portion are engaged. Therefore, it is possible to further suppress the cap portion from being detached from the case portion in a state where the cap portion is fitted in the hole of the large opening portion.

  According to a fifth aspect of the present invention, the case portion has a fitting concave portion, the cap portion has a fitting convex portion, and the cap portion is fitted into the hole of the large opening portion. Thus, the gist of the fitting recess and the fitting protrusion is fitted.

  According to the fifth aspect of the present invention, since the fitting concave portion of the case portion and the fitting convex portion of the cap portion are fitted in the state where the cap portion is fitted in the hole of the large opening portion, It is possible to further suppress the fitted cap portion from being removed from the case portion.

The gist of the invention described in claim 6 is that the thickness of the hinge portion is constant.
According to the sixth aspect of the invention, since the thickness of the hinge portion is constant, when the hinge portion is bent, it is possible to suppress that a part of the hinge portion is locally bent greatly. Therefore, it is possible to increase the mechanical durability of the hinge portion.

The gist of the invention described in claim 7 is that the case portion has an internal space that is expanded from the hole of the small opening portion to the inside of the case portion and communicates with the hole of the large opening portion.
According to the invention described in claim 7, a step between the internal space of the case portion and the hole of the small opening portion is formed in the case portion. Thereby, the knot portion of the string is easily locked to the step between the internal space of the case portion and the hole of the small opening portion. Therefore, it is possible to further suppress the tying portion of the string accommodated in the case portion from slipping out of the case portion.

It is a figure which shows the perspective structure of the cord stopper in one Embodiment of this invention, Comprising: The perspective view which looked at the cord stopper before a cap part is inserted in a case part from the base end side of this cord stopper. FIG. 5 is a view similarly showing a perspective structure of the cord stopper, and is a perspective view of the cord stopper before the cap portion is fitted into the case portion, as viewed from the distal end side of the cord stopper. It is a figure which similarly shows the internal structure of a cord stopper, Comprising: The AA sectional view taken on the line in FIG. It is a figure which similarly shows the internal structure of a cord stopper, Comprising: (a) The figure which shows the state before a cap part is inserted by a case part, (b) The figure which shows the state by which a part of cap part was inserted by the case part (C) The figure which shows the state by which the whole cap part was engage | inserted by the case part. It is a figure which shows the cross-section of the cord stopper in a prior art example, Comprising: (a) The figure which shows the state before a cap part is fitted by a case part, (b) The figure which shows the state by which the cap part was fitted by the case part.

  Hereinafter, an embodiment embodying the cord stopper of the present invention will be described with reference to FIG. As shown in FIG. 1, in a resin-made cord stopper, a cap portion 30 is formed integrally with a case portion 10 having an elliptical cylinder shape via a hinge portion 20.

  A circular hole-shaped base end opening 11 as a small opening for inserting a cord into the cylinder of the case 10 is formed at one end of the case 10. On the other hand, at the other cylinder end of the case portion 10, a rectangular hole-shaped distal end opening portion 12 as a large opening portion for drawing a cord from the inside of the case portion 10 faces the base end opening portion 11. Is formed. The distal end opening portion 12 is used when the distal end of the cord inserted from the proximal end opening portion 11 is pulled out from the case portion 10. The size of the distal end opening 12 is larger than that of the proximal end opening 11 so that the drawn cord knot can be inserted therethrough.

  A guide slit 13 extending from the cylindrical end surface of the front end opening 12 toward the base end opening 11 is orthogonal to the outer surface of the cap connection wall 10S in the cap connection wall 10S which is the left wall of the peripheral wall of the case portion 10. It penetrates in the horizontal direction, which is the direction to do. In the extending direction that is the direction in which the guide slit 13 extends, the slit length L1 that is the length of the guide slit 13 is at least half the case length L2 that is the length of the case portion 10. In the longitudinal direction, which is a direction orthogonal to the extending direction and the lateral direction, the slit width HB1 that is the width of the guide slit 13 is constant over the entire extending direction of the guide slit 13.

  A strip-shaped hinge portion 20 extending in the extending direction is coupled to the slit base end 13N on the base end opening 11 side in the guide slit 13. The wall thickness W, which is the width in the lateral direction of the hinge portion 20, is constant throughout the extending direction of the hinge portion 20. On the other hand, the hinge width, which is the width in the vertical direction of the hinge portion 20, is smaller than the slit width HB1 and is constant throughout the extending direction of the hinge portion 20. The overall shape and size of the hinge portion 20 is such that the hinge portion 20 can be accommodated in the guide slit 13.

  A band-shaped connecting curved portion 31 that is a base end portion of the cap portion 30 is connected to the distal end of the hinge portion 20. The connecting curved portion 31 has an outer surface continuous with the outer surface of the hinge portion 20, and an angle between the proximal end side of the connecting bent portion 31 and the distal end side of the connecting bent portion 31 is about 90 °. Further, it is gently bent from the tip of the hinge portion 20. The thickness of the connecting curved portion 31 in the horizontal direction is the same as the thickness W of the hinge portion 20 in the horizontal direction, and the connecting width HC1 which is the width in the vertical direction of the connecting curved portion 31 is the slit described above. It is substantially the same as the width HB1. Further, a connecting portion contour 31E that is an outer edge in the longitudinal direction of the connecting curved portion 31 is formed in a shape that follows the slit contour 13E that is the inner edge of the guide slit 13. In other words, the overall shape and size of the connecting curved portion 31 are such that the entire connecting curved portion 31 can be fitted into the guide slit 13. Then, the connecting curved portion 31 is fitted into the guide slit 13 so that the slit contour 13E and the connecting portion contour 31E described above coincide with each other. The outer peripheral surface of the part 10 is flush.

  On the inner surface of the connecting curved portion 31, a triangular plate-shaped connecting protruding piece 32 is provided so as to extend inside the connecting curved portion 31. By forming such a connecting projection piece 32, the bending rigidity of the connecting curved portion 31 is mechanically reinforced, and the bending rigidity of the connecting bent portion 31 against the external force in the extending direction or the lateral direction is that of the hinge portion 20. It becomes larger than the bending rigidity.

  A rectangular parallelepiped blocking portion 33 constituting the cap portion 30 is connected to the distal end of the connecting curved portion 31 and the distal end of the connecting protrusion 32. The cap width HC2 that is the width in the vertical direction of the closing portion 33 is larger than the above-described connection width HC1 and is substantially the same as the opening width HB2 that is the width of the tip opening portion 12. The entire shape and size of the blocking portion 33 are such that the entire blocking portion 33 can be fitted into the hole of the tip opening portion 12.

  The blocking portion 33 that is the distal end portion of the cap portion 30 is widened in the vertical direction from the connecting curved portion 31 that is the base end portion of the cap portion 30 and the connecting protruding piece 32. Further, on the proximal end side of the closing portion 33, a locked surface 33 a is formed as a planar locked portion extending in the vertical direction from the distal end of the connecting curved portion 31 and the leading end of the connecting protrusion 32. . Thereby, between the to-be-latched surface 33a of the obstruction | occlusion part 33 and the inner surface of the connection curved part 31, the hollow 30C which consists of the connection protrusion 32 and the level | step difference of the connection curved part 31 and the obstruction | occlusion part 33 is formed. Has been.

  As shown in FIG. 2, the closed portion contour 33 </ b> E that is the outer edge of the outer surface 33 </ b> S of the closed portion 33 is formed to follow the distal end opening contour 12 </ b> E that is the inner edge of the distal end opening 12. According to such a configuration, when the blocking portion 33 is fitted into the hole of the tip opening portion 12, the tip opening contour 12 </ b> E and the blocking portion contour 33 </ b> E described above coincide with each other. The outer surface 33 </ b> S that closes the hole and the cylindrical end surface of the tip opening 12 are flush with each other.

  On the side of the case portion 10 in the closing portion 33, an insertion portion 34 having a truncated pyramid shape that is tapered toward the inside of the case portion 10 at the tip of the closing portion 33 is formed. The insertion width HA, which is the width in the longitudinal direction at the tip of the insertion portion 34, is smaller than the slit width HB1 described above. According to such a configuration, since the tip shape of the cap portion 30 is a tapered shape that can be inserted into the guide slit 13, when the closing portion 33 is fitted into the hole of the tip opening portion 12, It becomes easy for the insertion portion 34 which is the distal end portion to slide from the guide slit 13 and enter the distal end opening portion 12.

  A pair of upper and lower fitting projections 35 having a triangular prism shape project from the both side surfaces of the closing portion 33 in the longitudinal direction along the longitudinal direction of the closing portion 33. An insertion surface 35 a that is flush with the case portion 10 side of the insertion portion 34 is formed on the surface of the fitting convex portion 35 on the case portion 10 side. When the above-described insertion portion 34 is fitted into the hole of the distal end opening portion 12, in the fitting convex portion 35 having such a shape, the distal end opening contour 12 </ b> E slidably contacting the insertion portion 34 is fitted from the insertion portion 34. It will slide continuously over the part 35. As a result, it becomes easy for the entire insertion portion 34 to enter the inside of the distal end opening portion 12.

  The hole of the tip opening 12 in the case portion 10 is a hole that is expanded from the guide slit 13 toward the inside of the case portion 10, and the inner surface of the hole of the tip opening 12 and the guide slit are formed inside the case portion 10. A locking surface 13 a is formed as a locking portion having a step with the inner surface of 13. The locking surface 13a is engaged with the locked surface 33a described above by fitting the closing portion 33 described above into the hole of the tip opening portion 12.

  In addition, a pair of upper and lower fitting recesses 15 extending in the vertical direction pass through both vertical side walls of the peripheral wall of the case portion 10. Each of the pair of upper and lower fitting recesses 15 is fitted with the above-described pair of upper and lower fitting projections 35 by the above-described closing portion 33 being fitted into the hole of the tip opening 12.

As shown in FIG. 3, an internal space S that is expanded from the hole of the proximal end opening 11 to the inside of the case part 10 and communicates with the hole of the distal end opening 12 is formed inside the case part 10. Yes. Then, by forming the internal space S having such a shape, a stepped portion 16 formed by the internal space S and the hole of the base end opening portion 11 is formed over the entire circumferential direction of the case portion 10. According to such a configuration, the knot portion of the string is easily locked at the step between the internal space S of the case portion 10 and the hole of the proximal end opening portion 11. Therefore, it is possible to further suppress the tying portion of the string accommodated in the case portion 10 from coming out of the case portion 10.
Next, the operation of the cord stopper having the above-described configuration will be described below.

  When the cord stopper is attached to the end of the string, first, as shown in FIG. 4A, the hinge portion 20 is bent outside the guide slit 13 and the cap portion 30 is outside the guide slit 13. Placed in. From this state, the distal end of the string (not shown) is pulled out of the case portion 10 through the proximal end opening 11 and the distal end opening 12. Next, a knot is formed at the tip of the string, and then the string is pulled back from the proximal end opening 11. Thereby, the knot portion of the string comes into contact with the step portion 16 in the case portion 10 and cannot be pulled out from the proximal end opening portion 11.

  Next, an external force directed from the closing part 33 of the cap part 30 toward the case part 10 is applied to the closing part 33 through a user's finger or the like. When such an external force acts on the closing portion 33, the external force acts on the hinge portion 20 via the connecting curved portion 31, and thereby the hinge portion 20 is bent toward the inside of the case portion 10.

  At this time, as shown in FIG. 4B, when the hinge portion 20 is bent toward the inside of the case portion 10, the insertion portion 34 of the cap portion 30 first slides in a substantially lateral direction to guide slits. 13 At this time, as described above, since the insertion portion 34 is formed in a tapered shape, the insertion portion 34 can easily enter the guide slit 13. Subsequently, when the insertion portion 34 further enters the guide slit 13, the width of the guide slit 13 is expanded by the insertion portion 34, and then the closing portion 33 and the connecting curved portion 31 enter the guide slit 13.

  When the locked surface 33a, which is a connection portion between the blocking portion 33 and the connecting curved portion 31, passes through the guide slit 13 and reaches the locking surface 13a, as shown in FIG. The part 31 is fitted into the guide slit 13. As a result, the slit contour 13E and the connecting portion contour 31E coincide with each other, and the outer surface of the connecting curved portion 31 that closes the guide slit 13 and the outer peripheral surface of the case portion 10 are flush with each other. As a result, when foreign matter enters from the outside of the case portion 10 between the outer peripheral surface of the case portion 10 and the outer surface of the connecting curved portion 31, there is a direction in which the foreign matter enters and a direction in which the connecting curved portion 31 is fitted. Will be equal. Therefore, it is possible to prevent the cap portion 30 from coming off due to foreign matter entering between the outer peripheral surface of the case portion 10 and the outer surface of the connecting curved portion 31.

  Further, the closing portion 33 is fitted into the hole of the tip opening portion 12, the tip opening contour 12E and the blocking portion contour 33E coincide with each other, and the outer surface 33S that plugs the hole of the tip opening portion 12 in the blocking portion 33. And the end face of the tip opening 12 are flush with each other. As a result, it is possible to prevent the cap portion 30 from coming off due to foreign matter entering between the outer surface 33S of the closing portion 33 and the cylindrical end surface of the tip opening portion 12. As a result, a portion of the cap portion 30 that is exposed to the outside of the case portion 10 is prevented from being caught by an object outside the case portion 10 or being recognized by a tactile sensation such as a finger. It is possible to suppress the fitted cap portion 30 from being detached from the case portion 10.

At this time, when the locked surface 33a reaches the locking surface 13a, the locked surface 33a and the locking surface 13a are engaged, and the locked surface 33a moves to the outside of the case portion 10. Is locked. Further, a pair of upper and lower fitting projections 35 are fitted in each of the pair of upper and lower fitting recesses 15. According to such a configuration, the cap portion 30 is fitted into the hole of the tip opening portion 12, whereby the locking surface 13a of the case portion 10 and the locked surface 33a of the cap portion 30 are engaged, and the case The fitting concave part 15 of the part 10 and the fitting convex part 35 of the cap part 30 are fitted. Therefore, it is possible to further suppress the cap portion 30 fitted into the case portion 10 from being detached from the case portion 10.
As described above, according to the present embodiment, the effects listed below can be obtained.

  (1) The blocking portion 33 is fitted into the hole of the tip opening portion 12, and the connecting curved portion 31 is fitted into the guide slit 13. That is, the entire cap portion 30 is fitted into the hole of the tip opening portion 12 and the guide slit 13. And in the hole of the front-end | tip opening part 12, the outer surface 33S which plugs up this hole among the obstruction | occlusion parts 33, and the cylinder end surface of the front-end | tip opening part 12 become flush | level.

  Therefore, the portion of the cap portion 30 that is exposed to the outside of the tip opening portion 12 is prevented from being caught by an object outside the case portion 10 or recognized by a tactile sensation such as a finger. It is possible to suppress the fitted cap portion 30 from being detached from the case portion 10.

  (2) Moreover, the outer surface which closes the guide slit 13 among the connection curved parts 31, and the outer peripheral surface of the case part 10 become flush. Therefore, it is possible to further suppress the portion of the cap portion 30 that is exposed to the outside of the guide slit 13 from being caught by an object outside the case portion 10 or being recognized by a tactile sense such as a finger.

  (3) The insertion portion 34 that is the tip of the cap portion 30 has a tapered shape that can be inserted into the guide slit 13. Therefore, when the cap portion 30 is fitted into the tip opening portion 12, it is easy to fit the insertion portion 34 from the guide slit 13 into the tip opening portion 12. As a result, when the cap part 30 is fitted into the tip opening part 12 as compared with the case where the cap part 30 is fitted into the tip opening part 12 along the direction in which the hole of the tip opening part 12 extends, the hinge part 20 is used. It is possible to reduce the angle of bending.

  (4) When the cap part 30 is fitted in the hole of the tip opening part 12, the locking surface 13a of the case part 10 and the locked surface 33a of the cap part 30 are engaged. Therefore, it is possible to further suppress the cap portion 30 from being detached from the case portion 10.

  (5) By fitting the cap part 30 in the hole of the tip opening part 12, the fitting concave part 15 of the case part 10 and the fitting convex part 35 of the cap part 30 are fitted. Therefore, it is possible to further suppress the cap portion 30 fitted into the case portion 10 from being detached from the case portion 10.

  (6) Since the thickness W of the hinge part 20 is constant, it is possible to prevent a part of the hinge part 20 from being locally bent, and increase the mechanical resistance of the hinge part 20 against bending. It is possible.

(7) Inside the case portion 10, a step portion 16 is formed between the internal space S of the case portion 10 and the hole of the proximal end opening portion 11. Thereby, the knot portion of the string is easily locked to the step portion 16 between the internal space S of the case portion 10 and the hole of the proximal end opening portion 11. Therefore, it is possible to further suppress the tying portion of the string accommodated in the case portion 10 from coming out of the case portion 10.
(8) Since the cap part 30 is fitted in the case part 10 while sliding in the lateral direction, it is possible to reduce stress deformation in the hinge part 20.
In addition, the said embodiment can also be changed and implemented as follows.

  The slit length L1 that is the sum of the length of the hinge part 20 and the length of the connecting curved part 31 may be less than half of the case length L2, and the shape, size, and material of the hinge part 20 and the connecting curved part 31 Depending on the case, it is appropriately selected. In short, it is sufficient that the length of the stress does not concentrate inside the hinge part 20 and the connecting curved part 31 in a state where the entire cap part 30 is fitted in the case part 10.

  If the hinge portion 20 is sufficiently long to protrude from the guide slit 13, the cap portion 30 can be fitted into the hole of the tip opening portion 12 along the direction in which the hole of the tip opening portion 12 extends. is there. That is, the aspect in which the cap part 30 is fitted into the hole of the distal end opening part 12 may be an aspect in which the cap part 30 is slid in the lateral direction according to the length of the hinge part 20, or the cap part 30 is extended. It may be a mode of sliding in the installation direction.

  -The length of the extending direction in the hinge part 20 should just be more than twice the thickness W of the hinge part 20 from a viewpoint that the flexibility in the hinge part 20 is fully acquired, and slit length L1 is Depending on the length of the hinge portion 20, the length may be smaller than half of the case length L2. Even with such a configuration, it is possible to obtain the effects according to the above (1) to (7).

  In the case portion 10, a stepped portion 16 formed by a step between the hole of the proximal end opening portion 11 and the internal space S is formed, but inside the case portion 10, the hole of the proximal end opening portion 11 A configuration in which the stepped portion 16 described above is omitted may be formed by forming a continuous surface with the hole of the tip opening portion 12. In short, it is only necessary that the small opening portion having a small hole in the pair of opening portions of the case portion 10 is configured so that the knot portion of the string housed inside the case portion cannot be pulled out from the inside of the case. . Even with such a configuration, it is possible to obtain the effects (1) to (6).

  The thickness W of the hinge part 20 may gradually increase from the proximal end of the hinge part 20 toward the distal end of the hinge part 20, or from the distal end of the hinge part 20 to the proximal end of the hinge part 20. The structure which becomes gradually large toward it may be sufficient. If the thickness W of the hinge part 20 is constant or changes gradually, it is possible to prevent the hinge part 20 from being broken by bending of the hinge part 20, and even with such a configuration, The effects according to the above (1) to (5) can be obtained.

  The number of the fitting recesses 15 and the number of the fitting protrusions 35 may be one or three or more, respectively, and even in such a configuration, the above (1) to (5) A similar effect can be obtained. In addition, even if it is the structure where the fitting recessed part 15 and the fitting convex part 35 are omitted, it is possible to acquire the effect according to said (1)-(4), Comprising: By omitting the joint convex portion 35, the structure of the case portion 10 and the structure of the cap portion 30 can be simplified.

  The structure of the locking surface 13a and the structure of the locked surface 33a are such that the locking surface 13a and the locked surface 33a are engaged by the cap portion 30 being fitted into the hole of the tip opening portion 12. Any structure can be used. For example, the locking surface 13 a may be concave with respect to the surface of the guide slit 13, and the locked surface 33 a may be convex with respect to the surface of the connecting curved portion 31. Also, the number of these locking parts and the number of the locked parts may be two or more. Even if it is such a structure, it is possible to acquire the effect according to said (1)-(4). In addition, even if it is the structure where a latching | locking part and a to-be-latched part are omitted, it is possible to acquire the effect according to said (1)-(3), Comprising: A latching | locking part and a to-be-latched part Is omitted, it is also possible to simplify the structure of the case portion 10 and the structure of the cap portion 30.

  -The insertion part 34 which is the front-end | tip of the cap part 30 may be flat form extended in a horizontal direction and the extending direction, or may be a tapered shape. In short, any shape may be used as long as the entire cap portion 30 is fitted into the hole of the tip opening portion 12 and the guide slit 13. Even with such a configuration, it is possible to obtain the effects according to the above (1) and (2). In addition, if the portion facing the inside of the case portion 10 is a tapered shape, it is easy to prevent the cap portion 30 from being detached from the hole of the tip opening portion 12 and the guide slit 13.

K ... string, S ... internal space, W ... thickness, HA ... insertion width, L1 ... slit length, L2 ... case length, HB1 ... slit width, HB2 ... opening width, HC1 ... connection width, HC2 ... cap width, Ra1 ... inner diameter, Ra2 ... inner diameter, Rb1 ... outer diameter, 10 ... case portion, 10S ... cap connecting wall, 11 ... proximal opening, 11B ... connecting curved portion, 12 ... tip opening, 12E ... tip opening contour, 13 ... Guide slit, 13a ... locking surface, 13E ... slit contour, 13N ... base end, 15 ... fitting recess, 16 ... stepped part, 20 ... hinge part, 30 ... cap part, 30C ... thinning, 31 ... connecting curved part , 31E: connecting portion contour, 32: connecting protrusion, 33: closed portion, 33a: locked surface, 33E: closed portion contour, 33S: outer surface, 34: inserting portion, 35: fitting convex portion, 35a ... Insertion surface, 50 ... case part, 51 ... proximal end opening part, 5 ...... Opening at the front end, 53, outer peripheral wall, 54, thinned portion, 55, stepped portion, 60, hinge portion, 70, cap portion, 71, closed portion, 71 S, outer surface, 72, guide protrusion, 72 S, closed. End face.

Claims (7)

A cylindrical case having a pair of openings facing each other and having different hole sizes;
A cap for closing a large opening having a large hole among the pair of openings,
The case part and the cap part are integrally formed via a flexible hinge part,
A small opening portion having a small hole of the pair of opening portions is a resin-made cord stopper that makes it impossible to draw out a knot portion of a string accommodated inside the case portion from the inside of the case portion,
Further comprising a slit that penetrates the outer peripheral wall of the case portion and communicates with the hole of the large opening, and extends from the cylindrical end surface of the large opening to the small opening.
The strip-shaped hinge portion extending from the end portion to the large opening portion side is connected to the end portion on the small opening portion side of the slit, and the cap portion is disposed on the large opening portion side of the hinge portion. Concatenated,
The entire cap portion is fitted into the hole of the large opening and the slit,
The cord stopper according to claim 1, wherein an outer surface of the cap portion that closes a hole of the large opening portion is flush with a cylindrical end surface of the large opening portion. In the cap part, a base end part which is a part connected to the hinge part is fitted into the slit,
The cord stopper according to claim 1, wherein an outer surface of the base end portion that closes the slit is flush with an outer peripheral surface of the case portion. The hole of the large opening is a hole expanded from the slit to the inside of the case part,
The cord stopper according to claim 2, wherein the cap portion has a tapered shape having a width smaller than a width of the slit at a tip. The case portion has a locking portion formed of a step between the inner surface of the hole of the large opening and the inner surface of the slit;
The distal end portion of the cap portion is widened in the direction of the step from the proximal end portion of the cap portion,
The cap part has a locked part consisting of a step between a tip part of the cap part and a base end part of the cap part,
The cord stopper according to claim 3, wherein the locking portion and the locked portion are engaged by the cap portion being fitted into the hole of the large opening. Having a fitting recess in the case portion;
Having a fitting projection at the tip of the cap,
The cord stopper according to any one of claims 1 to 4, wherein the fitting concave portion and the fitting convex portion are fitted by fitting the cap portion into the hole of the large opening. The cord stopper according to any one of claims 1 to 5, wherein a thickness of the hinge portion is constant. The cord stopper according to any one of claims 1 to 6, wherein the case portion has an internal space that is expanded from the hole of the small opening portion to the inside of the case portion and communicates with the hole of the large opening portion. .

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