Wire tensioning device

Abstract

The present invention provides a wire tensioning device which is provided in a shoe or the like, so that the tensioning operation for tensioning the wire is carried out smoothly, and a structure for raising the position of the part where the wire is wound in the housing is formed. The present invention includes: a winding wheel located in the internal space of the housing, having a through hole formed in the center in the vertical direction; a lifting member located in the through hole of the winding wheel, coupled to the winding wheel through ratchet engagement, and having engaging teeth at the lower part that are engaged with the locking teeth of the housing.

Description

Technical Field

[0001] The present invention relates to a wire tightening device, and more particularly to a wire tightening device having a structure capable of winding and tightening or unwinding and loosening a wire in shoes, bags, hats, clothes, etc. Background Art

[0002] In order to solve the inconvenience of tying or loosening shoelaces when wearing traditional shoes, a tightening device that can easily tighten or loosen shoelaces has been developed.

[0003] However, such tightening devices are not only provided on shoes, but also on bags, hats, and clothes, etc., for tightening ropes or wires, so their scope of use has gradually expanded.

[0004] Figure 1 And Figure 2 (a) and (b) of [Reference] show a conventional wire tightening device, which is disclosed in Korean Patent Publication No. 10-1648815.

[0005] Reference Figure 1 And Figure 2 Referring to (a) and (b) of [Reference], the wire tightening device is assembled by stacking a housing 1, a winding wheel 2, a gear member 3, a spring portion 4, and a tightening cap 5 in order from the lower side.

[0006] As Figure 2 shown in (a) of [Reference], in a state where the tightening cap 5 and the gear member 3 are pressed and elastically lowered by the spring portion 4, the gear member 3 and the winding wheel 2 can be coupled to rotate integrally. In this state, since rotation in the first direction is restricted, it can only rotate in the winding direction.

[0007] And, in a state where the tightening cap 5 and the gear member 3 are lifted and elastically raised by the spring portion 4, the coupling between the gear member 3 and the winding wheel 2 is released. In this state, the winding wheel 2 can rotate freely and can unwind the wire freely.

[0008] However, the conventional wire tightening device has a problem in that the number of components to be assembled is large (such as the spring portion 4, etc.) and the assembly is troublesome, resulting in a cumbersome manufacturing process.

[0009] And, in the stacked structure of the conventional wire tightening device, the winding wheel 2 for winding the wire is located at the bottommost layer inside the housing 1, and the incoming and outgoing wires pass in and out through the bottom of the housing 1, so there is also a problem that the wire continuously interferes with the surface of products such as shoes in which the wire tightening device is provided. Summary of the Invention

[0010] Technical Problem to be Solved by the Invention

[0011] An object of the present invention is to provide a wire tightening device which is provided in a shoe or the like, enables a tightening operation for tightening a wire to proceed smoothly, reduces the total number of components, and has a structure that is relatively easy to assemble.

[0012] Another object of the present invention is to provide a wire tightening device which forms a structure for raising the position of a part where a wire is wound inside a housing without increasing the total height that protrudes when provided in a shoe or the like, so that the wire does not interfere with the surface of the product when entering and exiting the housing.

[0013] Another object of the present invention is to provide a wire tightening device which does not require a position maintaining mechanism such as a spring that is separately manufactured and troublesome to assemble, and also enables the operation of maintaining the raised and lowered positions to proceed smoothly.

[0014] Technical solution for solving the problem

[0015] The wire tightening device of the present invention includes: a housing which forms an internal space and has locking teeth formed at the bottom; a winding wheel which is located in the internal space of the housing, has a through hole formed in the center in the vertical direction, has a winding groove for winding a wire formed on the outer peripheral surface around the through hole, has a first ratchet portion provided on the inner peripheral surface of the through hole below the winding groove, and has coupling teeth formed at the upper part; a lifting member which is located in the through hole of the winding wheel, has a second ratchet portion at the lower part, the second ratchet portion meshes with the first ratchet portion to allow the winding wheel to rotate in one direction and prevent rotation in the other direction, and has engaging teeth that are caught by the locking teeth at the lower part; and a tightening cover which covers the upper part of the housing, is coupled with the lifting member and performs a lifting operation together with the lifting member, has tightening teeth formed, and when descending, the tightening teeth are coupled with the coupling teeth to cause the winding wheel to rotate in the wire winding direction.

[0016] Moreover, the present invention is characterized in that the lifting member and the tightening cover are coupled in a state where a locking groove and a locking step are mutually locked, and are mutually restricted in the vertical direction to lift together and are allowed to rotate relative to each other in the rotational direction.

[0017] According to another aspect, the present invention is characterized by including: a housing formed with a side wall surrounding an internal space and having locking teeth formed at the bottom; a tension cover coupled to the upper portion of the housing and capable of moving up and down; a winding wheel located in the internal space, having a through hole formed at the center, and winding a wire in a winding groove on the outer peripheral surface; and a lifting member located in the through hole and coupled to the winding wheel, coupled to the tension cover and moving up and down together in the through hole, engaging or disengaging with the locking teeth when performing the lifting movement, when the tension cover rises, the lifting member disengages from the locking teeth to allow the winding wheel to freely rotate in the unwinding direction, and when the tension cover descends, the lifting member engages with the locking teeth to only allow the winding wheel to rotate in the winding direction and prevent rotation in the opposite direction.

[0018] Moreover, the present invention is further characterized in that the lifting member and the tension cover are coupled in a state where the upper portion of the lifting member and a convex portion formed on the lower surface of the tension cover are engaged with each other, and are constrained to move up and down together in the vertical direction and allow relative rotation in the rotational direction.

[0019] According to another aspect, the present invention is characterized by including: a housing formed with a side wall surrounding an internal space and having locking teeth formed at the bottom; a winding wheel located in the internal space, having a through hole formed in the vertical direction at the center, having a winding groove for winding a wire formed on the outer peripheral surface around the through hole, having a first ratchet portion provided on the inner peripheral surface of the through hole below the winding groove, and having coupling teeth formed at the upper portion; a lifting member located in the through hole of the winding wheel, having a second ratchet portion meshing with the first ratchet portion at the lower portion, and having engaging teeth engaging with the locking teeth at the lower portion; and a tension cover coupled to the upper portion of the housing in a manner capable of moving up and down, having tension teeth that separate from the coupling teeth when rising and engage with the coupling teeth when descending to cause the winding wheel to rotate in the wire-pulling direction, allowing rotation of the lifting member, but being coupled to the lifting member and being constrained in the vertical movement direction and performing a lifting operation together.

[0020] Moreover, the present invention is further characterized in that in the meshing structure of the first ratchet portion and the second ratchet portion, the inclination direction of the ratchet teeth is set to allow relative rotation of the winding wheel with respect to the lifting member in the winding direction and prevent relative rotation in the unwinding direction.

[0021] Moreover, the present invention is further characterized in that when the lifting portion performs a lifting movement, the ratchet wing teeth formed on the second ratchet portion slide up and down along the ratchet teeth of the first ratchet portion and maintain the meshing state.

[0022] Moreover, the present invention is further characterized in that the through hole is divided into an upper through hole and a lower through hole, the diameter of the lower through hole is larger than that of the upper through hole, and the first ratchet portion is formed around the lower through hole. The first ratchet portion includes ratchet teeth formed obliquely in one direction around the lower through hole. The second ratchet portion includes ratchet wings, and a plurality of the ratchet wings are fixed around the lifting member in a spiral shape. The free end of the ratchet wing has ratchet wing teeth that engage with the ratchet teeth for ratchet engagement.

[0023] Moreover, the present invention is further characterized in that a restraining portion is formed in the housing to prevent the winding wheel from rising to maintain its position in the internal space.

[0024] Moreover, the present invention is further characterized in that a restraining portion for preventing the winding wheel from rising is formed in the housing. A bulging portion that bulges laterally is formed outside the upper part of the through hole in the winding wheel. A position setting portion is formed in the tensioning cover. The position setting portion elastically straddles the bulging portion. The engaging teeth and the locking teeth are separated at a height higher than the bulging portion, and the engaging teeth and the locking teeth are locked at a height lower than the bulging portion.

[0025] Moreover, the present invention is further characterized in that the tensioning cover includes an outer cover and an inner cover fixed inside the outer cover, and the position setting portion is formed in the inner cover.

[0026] Moreover, the present invention is further characterized in that a restraining portion for preventing the winding wheel from rising is formed in the housing. A bulging portion that bulges laterally is formed on the inner peripheral surface of the upper end portion of the housing. A position setting portion is formed in the tensioning cover. The position setting portion elastically straddles the bulging portion. The engaging teeth and the locking teeth are separated at a height higher than the bulging portion, and the engaging teeth and the locking teeth are locked at a height lower than the bulging portion.

[0027] Moreover, the present invention is further characterized in that an upper hook is formed at the upper end portion of the winding wheel, and a hook that is elastically straddles the upper hook during assembly is formed in the tensioning cover to lock the tensioning cover so that it rises to the range restricted by the upper hook, and the rising of the tensioning cover can reach the range where the engaging teeth and the locking teeth can be separated.

[0028] Advantages of the Invention

[0029] By providing a lifting member in the through hole of the winding wheel, the present invention enables the lifting member to perform lifting actions in the through hole, thereby enabling the tensioning operation for winding to proceed smoothly and saving space when placing components.

[0030] Moreover, in the present invention, compared with traditional wire tensioning devices, the total number of components is reduced and the product assembly is simplified.

[0031] Also, in the present invention, a winding groove for winding the thread is formed on the upper part of the winding wheel, and a first ratchet portion is provided inside the lower part. The second ratchet portion of the lifting member is engaged with the first ratchet portion inside the lower part of the winding wheel. Thus, a structure is formed that can raise the position of the winding groove for winding the thread inside the housing without increasing the total height of the thread tensioning device. With this structure, when the thread enters and exits the housing, it does not interfere with the surface of the product, and the height at which the thread tensioning device protrudes from the surface of a product such as a shoe can also be formed at the existing height level.

[0032] Also, in the present invention, a position maintaining mechanism made of a metal material that is separately manufactured and troublesome to assemble, such as a spring, is omitted. The raised portions of the winding wheel or the housing and the position setting portions of the tensioning cover are elastically spanned with each other, so that the position can be set. Therefore, the present invention helps to facilitate the assembly of components and makes the operation smooth.

[0033] Also, in the present invention, the lifting member can perform a lifting motion while the first ratchet portion of the winding wheel and the second ratchet portion of the lifting member maintain an engaged state. Therefore, when the lifting member performs a lifting motion, the winding wheel and the lifting member do not separate from each other, so that a problem of poor meshing caused by separation and engagement does not occur, and the lifting motion can be carried out very smoothly. Description of the Drawings

[0034] Figure 1 It is a perspective view of the exploded structure of a conventional thread tensioning device.

[0035] Figure 2 (a) and (b) thereof are explanatory diagrams of the cross-section and operation in the assembled state of the thread tensioning device for explaining Figure 1 the thread tensioning device.

[0036] Figure 3 It is a perspective view showing the assembled appearance of the thread tensioning device according to the first embodiment of the present invention.

[0037] Figure 4 It is a perspective view showing the upper surface structure in the exploded state of the thread tensioning device according to the first embodiment of the present invention.

[0038] Figure 5 It is a perspective view showing the lower surface structure in the exploded state of the thread tensioning device according to the first embodiment of the present invention.

[0039] Figure 6 It is a cross-sectional structure diagram showing the state switched to the state where the thread can be tensioned in the assembled state of the thread tensioning device according to the first embodiment of the present invention.

[0040] Figure 7This is a cross-sectional structure diagram showing the state where the wire tensioning device according to the first embodiment of the present invention can be switched to a state where the wire can be unwound in the assembled state.

[0041] Figure 8 This is a perspective view showing the upper surface structure of the wire tensioning device according to the second embodiment of the present invention in the disassembled state.

[0042] Figure 9 This is a perspective view showing the lower surface structure of the wire tensioning device according to the second embodiment of the present invention in the disassembled state.

[0043] Figure 10 This is a cross-sectional structure diagram showing the state where the wire tensioning device according to the second embodiment of the present invention can be switched to a state where the wire can be tensioned in the assembled state.

[0044] Figure 11 This is a cross-sectional structure diagram showing the state where the wire tensioning device according to the second embodiment of the present invention can be switched to a state where the wire can be unwound in the assembled state.

[0045] Figure 12 This is a perspective view showing the upper surface structure of the wire tensioning device according to the third embodiment of the present invention in the disassembled state.

[0046] Figure 13 This is a perspective view showing the lower surface structure of the wire tensioning device according to the third embodiment of the present invention in the disassembled state.

[0047] Figure 14 This is a cross-sectional structure diagram showing the state where the wire tensioning device according to the third embodiment of the present invention can be switched to a state where the wire can be tensioned in the assembled state.

[0048] Figure 15 This is a cross-sectional structure diagram showing the state where the wire tensioning device according to the third embodiment of the present invention can be switched to a state where the wire can be unwound in the assembled state. Detailed Description of the Embodiments

[0049] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0050] See Figures 3 to 5 , the wire tensioning device according to the first embodiment of the present invention includes: a housing 10, having side walls 11a surrounding an internal space 14 and having locking teeth 15 formed at the bottom; a tensioning cover 40, covering the upper part of the housing 10 and capable of moving up and down; a winding wheel 20, located in the internal space 14, having a through hole 21 formed at the center, and winding a wire 60 in a winding groove 23 on the outer peripheral surface; a lifting member 30, located in the through hole 21 and coupled to the winding wheel 20, coupled to the tensioning cover 40 and moving up and down together in the through hole 21, and being locked or separated from the locking teeth 15 when performing the lifting movement.

[0051] The housing 10 is a part formed with a side wall 11a surrounding the internal space 14 and having locking teeth 15 formed at the bottom.

[0052] Specifically, the housing 10 includes: a base portion 13 attached to a product such as a shoe and having a recessed placement groove 14a; and a cylindrical side wall portion 11 combined with the placement groove 14a of the base portion 13 to form a side wall 11a surrounding the internal space 14.

[0053] Preferably, the locking teeth 15 are provided on the bottom surface of the placement groove 14a of the base portion 13.

[0054] A restraint portion 17 is formed at the upper end of the housing 10 to prevent the winding wheel 20 from rising to maintain its position in the internal space 14. Specifically, the restraint portion 17 is a stepped portion for the upper end of the outer peripheral surface of the winding wheel 20 to be locked.

[0055] In the assembled state, the restraint portion 17 protrudes toward the internal space 14 side, so that the upper end of the winding wheel 20 is stuck and its rising is restricted.

[0056] Moreover, a limiting convex portion 18 protruding outward is formed at the upper end of the housing 10 to limit the tensioning cover 40 from disengaging upward in the state of being combined with the housing 10.

[0057] And, a pair of wire inlet / outlet holes 16 are formed to enable the wire 60 to enter and exit the internal space 14 in the state where the cylindrical side wall portion 11 and the base portion 13 are combined.

[0058] The cylindrical side wall portion 11 and the base portion 13 may be integrally formed as one structure.

[0059] On the other hand, the tensioning cover 40 is combined in a manner of covering the upper part of the housing 10, can perform a lifting movement, and is a part that can be held and rotated by a user's hand.

[0060] The tensioning cover 40 has a circular container shape, has a structure covering the upper end of the housing 10, and a limiting step 48 is formed at the lower end and is stuck to the limiting convex portion 18 of the housing 10 to be combined in a manner of preventing the tensioning cover 40 from disengaging upward.

[0061] Tensioning teeth 47 are formed on the inner lower surface of the tensioning cover 40. During the lifting movement, when descending, they are combined with the engaging teeth 27 of the winding wheel 20 to cause the winding wheel 20 to rotate in the direction of the winding wire 60.

[0062] The tensioning teeth 47 are formed in a ring shape along the periphery on the inner lower surface of the tensioning cover 40. If an engagement with the engaging teeth 27 of the winding wheel 20 occurs, the rotational force of the user rotating the tensioning cover 40 is also transmitted to the winding wheel 20, and the winding wheel 20 can be caused to rotate together in the direction of the pulling wire 60.

[0063] If the tension cover 40 moves upward under tension, the tension teeth 47 will separate from the engaging teeth 27.

[0064] Moreover, the tension cover 40 can be coupled to the lifting member 30 to perform lifting operations together with the lifting member 30 and can be mutually coupled to allow rotation of the lifting member 30.

[0065] For this purpose, the locking groove 42a and the locking step 32 have a coupling structure that engages with each other, are mutually constrained in the vertical direction to move up and down together, and allow relative rotation in the rotational direction.

[0066] More specifically, an annular locking step 32 is formed on the upper part of the lifting member 30, a lower surface convex portion 42 is provided on the inner lower surface of the tension cover 40, and a locking groove 42a for engaging with the locking step 32 is formed around the lower surface convex portion 42, thereby forming a coupling structure that engages with each other.

[0067] Figure 5 It is shown that the locking grooves 42a are respectively formed in the lower surface convex portion 42 that is cut into three parts, so that the lower surface convex portion 42 can be easily coupled to the central hole 38 of the lifting member 30.

[0068] Therefore, the tension cover 40 and the lifting member 30 are mutually constrained in the vertical direction to move up and down together, but are not constrained to each other during rotation and allow relative rotation in the rotational direction.

[0069] In this structure, as the tension cover 40 descends to cause the winding wheel 20 to rotate and the winding wheel 20 winds the wire 60, the tension cover 40 can rotate without being interfered with by the lifting member 30.

[0070] On the other hand, the winding wheel 20 is located in the internal space 14 of the housing 10, a through hole 21 is formed in the center in the vertical direction, and the wire 60 is wound around the winding groove 23 on the outer peripheral surface.

[0071] An annular engaging tooth 27 is formed around the through hole 21 on the upper part of the winding wheel 20, so that it can engage with the tension tooth 47 of the tension cover 40.

[0072] The winding groove 23 is formed in an annular shape around the through hole 21 on the upper part of the winding wheel 20, and it is the part for winding and storing the wire 60 that passes in and out through a pair of wire inlet and outlet holes 16 of the housing 10.

[0073] A wire fixing groove 29 for fixing the end of the wire 60 is formed in the winding groove 23.

[0074] A first ratchet portion 26 is provided on the inner peripheral surface of the through hole 21 at the lower part of the through hole 21 of the winding wheel 20.

[0075] The through hole 21 is formed by dividing it into an upper through hole 21a and a lower through hole 21b. A winding groove 23 is formed along the periphery of the upper through hole 21a. The diameter of the lower through hole 21b is larger than that of the upper through hole 21a, and a first ratchet portion 26 is formed along the periphery.

[0076] The first ratchet portion 26 of the lower through hole 21b includes ratchet teeth formed to be inclined in one direction along the periphery. The second ratchet portion 36 of the lifting member 30 is ratchet - engaged with the first ratchet portion 26, allowing rotation in only one direction.

[0077] On the other hand, the lifting member 30 is located in the through hole 21 and is coupled to the winding wheel 20. It is a part that is coupled to the tensioning cover 40 and moves up and down together in the through hole 21.

[0078] The lower part of the lifting member 30 meshes with the first ratchet portion 26 and has a second ratchet portion 36. The second ratchet portion 36 allows the winding wheel 20 to rotate in one direction and prevents rotation in the other direction. The lower end portion has engaging teeth 35 that are caught by the locking teeth 15 of the housing 10. When moving up and down, the lifting member 30 is caught or separated from the locking teeth 15.

[0079] In the meshing structure of the first ratchet portion 26 and the second ratchet portion 36, the inclination direction of the ratchet teeth is set to allow the winding wheel 20 to rotate relative to the lifting member 30 in the winding 60 direction and prevent relative rotation in the unwinding 60 direction.

[0080] In the second ratchet portion 36, a plurality of ratchet wings 36a are fixed in a spiral shape around the lifting member 30. The free end of each ratchet wing 36a has ratchet wing teeth 36b that are engaged with the ratchet teeth of the first ratchet portion 26 for ratchet engagement.

[0081] Therefore, when the lifting member 30 descends and is caught by the locking teeth 15 of the housing 10 and stops, when the tensioning cover 40 causes the winding wheel 20 to rotate in the winding 60 direction, the winding wheel 20 can rotate relative to the lifting member 30. The ratchet teeth of the first ratchet portion 26 elastically deform the ratchet wings 36a of the second ratchet portion 36 and rotate across the ratchet wing teeth 36b.

[0082] When the winding wheel 20 needs to rotate relative to the lifting member 30 in the direction opposite to the above - mentioned manner while the lifting member 30 is caught by the locking teeth 15, the ratchet teeth of the first ratchet portion 26 are caught by the ratchet wing teeth 36b of the second ratchet portion 36 to prevent rotation.

[0083] Each ratchet tooth of the first ratchet portion 26 is formed in the vertical direction, and the formation range corresponds to the height of the lower through hole 21b. Therefore, when the lifting member 30 moves up and down, the ratchet teeth of the second ratchet portion 36 slide up and down along the ratchet teeth of the first ratchet portion 26 and maintain the meshing state.

[0084] This is because when the lifting member 30 moves up and down, the first ratchet portion 26 and the second ratchet portion 36 do not separate from each other, so there will be no problem of poor meshing caused by separation and engagement, and its up and down movement can proceed very smoothly.

[0085] An annular raised portion 34 is formed around the outer peripheral surface of the lifting member 30, and a position setting portion 24 is formed on the inner peripheral surface of the through hole 21 of the winding wheel 20. When the lifting member 30 moves up and down, the raised portion 34 also rises and elastically deforms through its own material to cross the position setting portion 24, so that the raised portion 34 maintains the upper and lower positions of the position setting portion 24.

[0086] This allows the tension cover 40 combined with the lifting member 30 to maintain the original rising state and falling state.

[0087] Hereinafter, the operation process of the wire tensioning device according to the first embodiment of the present invention will be described in more detail.

[0088] First, in order to wind and tension the wire 60, as Figure 6 shown, the user presses the tension cover 40 to make it descend and rotates the tension cover 40.

[0089] See Figure 6 , when the tension cover 40 descends, the lifting member 30 constrained in the up and down direction descends together, and the engaging teeth 35 of the lifting member 30 are combined with the locking teeth 15 of the housing 10, and the locking teeth 15 prevent the lifting member 30 from rotating in the rotation direction, especially preventing rotation in the direction of the winding wire 60.

[0090] Moreover, as the tension cover 40 descends, the tension teeth 47 of the tension cover 40 are engaged with the engaging teeth 27 of the winding wheel 20 to form an engaged state.

[0091] In this state, when the user rotates the tension cover 40 in the direction of the winding wire 60, due to the engagement of the tension teeth 47 and the engaging teeth 27, the tension cover 40 forces the winding wheel 20 to rotate, and functions to wind and tension the wire 60 to the winding groove 23.

[0092] At this time, the meshing structure of the first ratchet portion 26 of the winding wheel 20 and the second ratchet portion 36 of the lifting member 30 allows the winding wheel 20 to rotate relative to the lifting member 30 in the direction of the winding wire 60. That is, with respect to the lifting member 30 that is stuck to the locking teeth 15 of the housing 10 and is in a stopped state, the first ratchet portion 26 of the winding wheel 20 elastically deforms and crosses the ratchet wings 36a of the second ratchet portion 36 of the lifting member 30, so that the winding wheel 20 can rotate.

[0093] In this state, when the tightening cover 40 is tightened so that the winding wheel 20 rotates in the direction of the unwinding line 60, or when the winding wheel 20 rotates in the direction of the unwinding line 60 by the external force of the pulling wire 60, with respect to the lifting member 30 that is in a stopped state while being stuck to the locking teeth 15 of the housing 10, the first ratchet portion 26 of the winding wheel 20 is stuck to the second ratchet portion 36 and is prevented from rotating, and the line 60 cannot be unwound.

[0094] Therefore, when the tightening cover 40 and the lifting member 30 are in the lowered state, the winding wheel 20 can only rotate in the direction of winding and tightening the line 60.

[0095] On the other hand, to unwind the line 60, the user holds the tightening cover 40 and lifts it up.

[0096] See Figure 7 , when the tightening cover 40 rises, the engaging teeth 35 of the lifting member 30 are separated from the locking teeth 15 of the housing 10, allowing the winding wheel 20 to freely rotate in the direction of the unwinding line 60.

[0097] That is, the lifting member 30 is constrained with the tightening cover 40 in the vertical direction and rises together. The lifting member 30 is separated from the locking teeth 15 of the housing 10, and the winding wheel 20 can rotate without constraint and freely. At this time, the tightening cover 40 can also rotate together with the winding wheel 20.

[0098] Therefore, when the line 60 is pulled outward by an external force, it can be freely unwound from the winding wheel 20.

[0099] Hereinafter, a wire tightening device according to a second embodiment of the present invention will be described.

[0100] Refer to Figures 8 to 11 , the wire tightening device according to the second embodiment of the present invention includes: a housing 110, which forms an internal space 114 and has locking teeth 115 formed at the bottom; a winding wheel 120, which is located in the internal space 114 of the housing 110, has a through hole 121 formed in the center in the vertical direction, has a winding groove 123 for winding the wire 160 formed on the outer peripheral surface around the through hole 121, has a first ratchet portion 126 provided on the inner peripheral surface of the through hole 121 below the winding groove 123, and has a coupling tooth 127 formed at the upper part; a lifting member 130, which is located in the through hole 121 of the winding wheel 120, has a second ratchet portion 136 engaged with the first ratchet portion 126 at the lower part for allowing the winding wheel 120 to rotate in a first direction and preventing rotation in a second direction, and has an engaging tooth 135 stuck to the locking teeth 115 at the lower end; and a tightening cover 140, which is placed in a state of covering the upper end of the housing 110, is combined with the lifting member 130 and performs a lifting operation together with the lifting member 130, forms a tightening tooth 147, and when descending, the tightening tooth 147 is combined with the coupling tooth 127 to cause the winding wheel 120 to rotate in the direction of winding the wire 160.

[0101] The housing 110 is a part formed with a side wall 111a surrounding the internal space 114 and locking teeth 115 formed at the bottom.

[0102] The tensioning cover 140 can be constructed by dividing it into an outer cover 141 that can be held by a user's hand and an inner cover 143 fixed inside the outer cover 141.

[0103] Of course, the outer cover 141 and the inner cover 143 can also be manufactured as an integrated product, or the outer cover 141, which is the part held by hand, and the inner cover 143 that requires elastic deformation and meshing operation can be separately constructed and made of different materials to conform to their respective characteristics.

[0104] In the tensioning cover 140, tensioning teeth 147 are formed on the lower surface of the inner cover 143. During the lifting movement, when descending, they engage with the engaging teeth 127 of the winding wheel 120, causing the winding wheel 120 to rotate in the direction of the winding wire 160.

[0105] An annular engaging tooth 127 is formed around the upper part of the winding wheel 120 with the through-hole 121 as the center, so that it can engage with the tensioning teeth 147 of the tensioning cover 140.

[0106] On the outer side of the upper part of the through-hole 121 of the winding wheel 120, a laterally protruding raised portion 128 is formed.

[0107] The raised portion 128 is integrally formed at the upper end of the winding wheel 120, and the overall raised portion 128 protruding towards the lateral outside is formed in an annular shape.

[0108] And, on the inner cover 143 of the tensioning cover 140, a position setting portion 145 that elastically straddles the raised portion 128 is formed to protrude downward, and a plurality of position setting portions 145 are arranged along the annular track of the raised portion 128.

[0109] The structures of the annular raised portion 128 and the plurality of position setting portions 145 can be interchanged. It can be replaced with a structure of a plurality of raised portions 128 arranged along the annular track and an annular position setting portion 145. When crossing each other, they can elastically deform themselves to cross.

[0110] This enables the tensioning cover 140 combined with the lifting member 130 to maintain its original ascending state and descending state without external force.

[0111] When the position setting portion 145 of the tensioning lid 140 is at a height higher than that of the raised portion 128, the lifting member is also at an elevated height, and the engaging teeth 135 are separated from the locking teeth 115. When the position setting portion 145 of the tensioning lid 140 is at a height lower than that of the raised portion 128, the lifting member is also at a lowered height, and the position is set such that the engaging teeth 135 are engaged with the locking teeth 115.

[0112] The aforementioned raised portion 128 is formed on the upper part of the winding wheel 120 outside the through-hole 121 such that the raised portion 128 is formed around with a diameter larger than that of the through-hole 121 of the winding wheel 120. Thus, the contact area and range between the raised portion 128 and the position setting portion 145 are formed along an annular locus larger than the through-hole 121.

[0113] Accordingly, even if the tensioning lid 140, the winding wheel 120, etc. are made of materials with little elastic deformation and small deformation occurs, the raised portion 128 and the position setting portion 145 can be easily manufactured to maintain a force sufficient to maintain each other across a certain magnitude or more, and smooth operation can be easily achieved.

[0114] When the raised portion 128 and the position setting portion 145 are formed in a narrow area such as the through-hole 121 of the winding wheel 120, in order to prevent operation from starting even with a small force, it is necessary to select a material with sufficiently large elasticity and sufficient deformation, and at the same time, considerable attention needs to be paid to the shape of the raised portion 128 in the design, which is difficult.

[0115] Moreover, when the tensioning lid 140 is assembled in a manner covering the upper end of the housing, the raised portion 128 of the winding wheel 120 and the position setting portion 145 of the tensioning lid 140 come into contact with each other for assembly and perform a lifting movement in the contact state. This configuration can always accurately maintain the position of the tensioning lid 140 relative to the winding wheel 120, and can guide the separation and engagement operations of the tensioning teeth 147 and the engaging teeth 127 to be accurately performed at all times.

[0116] Hereinafter, the operation process of the wire tensioning device according to the second embodiment of the present invention will be described.

[0117] First, in order to wind and tension the wire 160, as Figure 10 shown, the user presses the tensioning lid 140 to lower it and rotates the tensioning lid 140.

[0118] When the tensioning lid 140 is lowered, the lifting member 130 constrained in the vertical direction is lowered together, and the engaging teeth 135 of the lifting member 130 are engaged with the locking teeth 115 of the housing 110.

[0119] At this time, the position setting portion 145 of the tensioning cover 140 elastically deforms to straddle the raised portion 128 and maintains a position lower than the raised portion 128, and the lifting member 130 also maintains the lowered height together.

[0120] As the tensioning cover 140 descends, the tensioning teeth 147 of the tensioning cover 140 engage with the engaging teeth 127 of the winding wheel 120 to form an engaged state.

[0121] In this state, when the user rotates the tensioning cover 140 in the direction of the winding 160, due to the engagement of the tensioning teeth 147 and the engaging teeth 127, the tensioning cover 140 forcibly rotates the winding wheel 120, so that the wire 160 can be wound and tensioned to the winding groove 123.

[0122] At this time, the meshing structure of the first ratchet portion 126 of the winding wheel 120 and the second ratchet portion 136 of the lifting member 130 allows the winding wheel 120 to rotate relative to the lifting member 130 in the direction of the winding 160 (the first direction). That is, relative to the lifting member 130 that is stopped by engaging with the locking teeth 115 of the housing 110, the first ratchet portion 126 of the winding wheel 120 elastically deforms the ratchet wings 136a of the second ratchet portion 136 of the lifting member 130 and straddles them, so that the winding wheel 120 can rotate.

[0123] On the other hand, to unwind the wire 160, as Figure 11 shown, the user holds the tensioning cover 140 and lifts it up.

[0124] At this time, the position setting portion 145 of the tensioning cover 140 elastically deforms to straddle the raised portion 128 and maintains a position higher than the raised portion 128, and the lifting member 130 also maintains the raised height together.

[0125] When the tensioning cover 140 rises, the engaging teeth 135 of the lifting member 130 are separated from the locking teeth 115 of the housing 110, allowing the winding wheel 120 to freely rotate in the direction of unwinding the wire 160.

[0126] Therefore, when the wire 160 is pulled outward by an external force, it can be freely unwound from the winding wheel 120.

[0127] Hereinafter, the wire tensioning device according to the third embodiment of the present invention will be described.

[0128] Referring to Figures 12 to 15 , compared with the structures of the first and second embodiments, the wire tensioning device of this embodiment is different in the formation positions of the restraining portion 217 and the raised portion 218, and the upper end hook 228 of the winding wheel 220 and the hook 248 of the tensioning cover 240.

[0129] Further, the difference also lies in that the inner lid 243 in the tension lid 240 is formed in an annular shape with an annular central hole 243a, and the tension teeth 247 and the lower surface convex part 242 are integrally formed with the lower surface of the outer lid 241 and are located in the annular central hole 243a.

[0130] The restricting portion 217 is used to prevent the winding wheel 220 from rising. A restricting portion 217 in an annular step shape is formed at the lower end of the housing 210, and the restricting portion 217 covers the annular restricting frame 225 formed at the lower end of the winding wheel 220 from above.

[0131] Since the restricting portion 217 is formed in an annular step shape and covers the restricting frame 225 of the winding wheel 220, when the winding wheel 220 rotates, the restricting frame 225 is in a restricted state below the restricting portion 217, and the rotation of the winding wheel 220 is allowed.

[0132] On the other hand, the raised portion 218 is formed in an annular shape on the inner peripheral surface of the upper end portion of the housing 10 and bulges toward the lateral inner side.

[0133] The position setting portion 245 that elastically crosses the position of the raised portion 218 protrudes downward and is formed on the inner lid 243 of the tension lid 240.

[0134] More preferably, a plurality of the position setting portions 245 are arranged along an annular track in a manner of being cut and distinguished from each other. This makes elastic deformation easier to occur and the function of crossing the raised portion 218 can be exerted more smoothly.

[0135] Similar to the second embodiment, in the above structure, the raised portion 218 is formed outside the through hole 221 at the upper part of the winding wheel 220, so that the raised portion 218 is formed around with a diameter larger than that of the through hole 221 of the winding wheel 220. Thus, the contact area and range between the raised portion 218 and the position setting portion 245 are larger than those in the case of the through hole 121 formed.

[0136] On the other hand, in this embodiment, an upper end hook 228 is formed at the upper end portion of the winding wheel 220, and a hook 248 that elastically crosses and catches the upper end hook 228 during assembly is formed on the tension lid 240.

[0137] More preferably, the upper end hook 228 and the hook 248 have a structure in which one of them is formed in an annular shape and the other is arranged in a plurality along an annular track in a manner of being cut and distinguished from each other.

[0138] During assembly, the upper end hook 228 and the hook 248 can be elastically deformed and caught with each other, and the tension lid rises to the range restricted by the upper end hook 228.

[0139] At this time, the tension cover 240 rises to the range restricted by the upper end hook 228, but the tension cover 240 can rise to the range where the meshing teeth 235 and the locking teeth 215 can be completely separated.

[0140] The above structure is used to replace the structure of the limiting convex portion 118 and the display step 148 of the second embodiment.

[0141] In the above structure, a hook 248 is formed on the inner cover 243 of the tension cover 240, and the upper end hook 228 is integrally formed on the winding wheel 220, which is useful when it is difficult to manufacture the outer cover 241, which is the part held by hand, or the housing for protecting internal components, with an elastic material.

[0142] Industrial Applicability

[0143] The present invention can be used for the purpose of tightening and fastening a wire (rope) provided on shoes, hats, bags, clothes, etc.

Claims

1. A wire tensioning device, characterized in that, Comprising: A housing, which forms an internal space and has locking teeth formed at the bottom; A winding wheel, located in the internal space of the housing, has a through hole formed in the center in the vertical direction, a winding groove for winding a wire is formed on the outer peripheral surface around the through hole, a first ratchet portion is provided on the inner peripheral surface of the through hole below the winding groove, and a coupling tooth is formed at the upper part; A lifting member, located in the through hole of the winding wheel, has a second ratchet portion at the lower part, the second ratchet portion meshes with the first ratchet portion to allow the winding wheel to rotate in one direction and prevent rotation in the other direction, and a meshing tooth that is stuck in the locking teeth is provided at the lower end; and A tensioning cover, which is coupled to the upper part of the housing in a manner that can be lifted and lowered, is coupled to the lifting member and performs a lifting and lowering operation together with the lifting member, and has a tensioning tooth formed thereon. When descending, the tensioning tooth engages with the coupling tooth to cause the winding wheel to rotate in the wire winding direction, The through hole is divided into an upper through hole and a lower through hole, the diameter of the lower through hole is larger than that of the upper through hole, and the first ratchet portion is formed along the periphery, The first ratchet portion includes ratchet teeth formed obliquely in one direction along the periphery, The second ratchet portion includes ratchet wings, and a plurality of the ratchet wings are fixed around the lifting member in a spiral shape. The free end of the ratchet wing has a ratchet wing tooth that meshes with the ratchet teeth for ratchet engagement.

2. The wire tensioning device according to claim 1, characterized in that, The lifting member and the tensioning cover are coupled by a coupling structure in which a locking groove and a locking step are mutually locked, and are mutually restricted in the vertical direction to lift and lower together, and allow relative rotation in the rotational direction.

3. A wire tensioning device, characterized in that, Comprising: A housing, which forms a side wall surrounding the internal space and has locking teeth formed at the bottom; A winding wheel, located in the internal space, has a through hole formed in the center in the vertical direction, a winding groove for winding a wire is formed on the outer peripheral surface around the through hole, a first ratchet portion is provided on the inner peripheral surface of the through hole below the winding groove, and a coupling tooth is formed at the upper part; A lifting member, located in the through hole of the winding wheel, has a second ratchet portion that meshes with the first ratchet portion at the lower part, and a meshing tooth that is stuck in the locking teeth is provided at the lower end; and A tensioning cover, which is coupled to the upper part of the housing in a manner that can perform a lifting and lowering movement, has a tensioning tooth that separates from the coupling tooth when rising and engages with the coupling tooth when descending to cause the winding wheel to rotate in the wire pulling direction, allows the rotation of the lifting member, but is coupled to the lifting member and is restricted in the vertical movement direction and performs a lifting and lowering operation together, The through hole is divided into an upper through hole and a lower through hole, the diameter of the lower through hole is larger than that of the upper through hole, and the first ratchet portion is formed along the periphery, The first ratchet portion includes ratchet teeth formed obliquely in one direction along the periphery, The second ratchet portion includes ratchet wings, and a plurality of the ratchet wings are fixed around the lifting member in a spiral shape, and free ends of the ratchet wings have ratchet wing teeth that engage with the ratchet teeth for ratchet engagement.

4. The wire tensioning device according to claim 3, wherein in the meshing structure of the first ratchet portion and the second ratchet portion, the inclination direction of the teeth is set to allow the winding wheel to rotate relative to the lifting member in the winding direction and prevent relative rotation in the unwinding direction.

5. The wire tensioning device according to any one of claims 1 to 4, wherein when the lifting portion moves up and down, the ratchet teeth of the second ratchet portion slide up and down along the ratchet teeth of the first ratchet portion and maintain the meshing state.

6. The wire tensioning device according to any one of claims 1 to 4, characterized in that, A restraint portion is formed in the housing to prevent the winding wheel from rising to maintain its position in the internal space.

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