A knob-type cord tightening device and a wearable article

Abstract

The present invention discloses a knob-type cord tightening device and a wearable article. The screw-type cord tightening device includes a base, an upper housing cooperating with the base, a driving mechanism, and a winding shaft rotatably mounted between the base and the upper housing. The winding shaft has a winding disk for winding the cord and a gear disk coaxially arranged with the winding disk; the driving mechanism drives the winding disk to rotate through the gear disk to tighten or loosen the cord. The driving mechanism includes a manual screwing member rotatably mounted on the upper housing and a gear assembly for driving the gear disk to rotate; a first gear meshing with the gear assembly is provided on the manual screwing member. The knob-type cord tightening device further includes a damping mechanism for providing resistance to the circumferential rotation of the manual screwing member. The knob-type cord tightening device of the present invention provides a certain resistance to the rotation of the knob member by providing a damping mechanism, avoiding the rotation of the screwing member under the state of vibration or shaking.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic tightening of cord, in particular to a knob-type cord tightening device and a wearable article. Background Art

[0002] At present, with the improvement of people's living standards, daily necessities with knob-type cord tightening devices are very common, such as knob-type headphone wire winders, shoes with knob-type shoelace tighteners, knob-type tightening plastic bras, etc., which facilitate people's use.

[0003] Since the knob-type cord tightening device needs to be installed inside shoes or clothes, it is required to have a sufficiently small volume. The knob-type cord tightening device in the prior art generally drives the rotation of a winding disc through a knob member, and a gear assembly is used for transmission between the knob member and the winding disc. The winding disc tightens or loosens the cord during rotation.

[0004] The screwing member in the prior art is prone to rotation or shaking during vibration, which affects the tightening or loosening of the cord and thus affects the use of the user. Summary of the Invention

[0005] The purpose of the present invention is to provide a knob-type cord tightening device to solve the deficiencies in the prior art. It provides resistance for the rotation of the knob member by setting a damping mechanism, thereby avoiding the rotation of the screwing member in a vibrating or shaking state.

[0006] The present invention provides a knob-type cord tightening device, which includes a base, an upper housing cooperating with the base, a driving mechanism, and a winding shaft rotatably installed between the base and the upper housing;

[0007] The winding shaft has a winding disc for winding the cord and a tooth disc coaxially arranged with the winding disc; the driving mechanism drives the winding disc to rotate through the tooth disc to tighten or loosen the cord;

[0008] The driving mechanism includes a manual screwing member rotatably installed on the upper housing and a gear assembly for driving the tooth disc to rotate; a first gear meshing with the gear assembly is arranged on the manual screwing member;

[0009] The knob-type cord tightening device further includes a damping mechanism cooperating with the manual screwing member and providing resistance limitation for the manual screwing member.

[0010] The damping mechanism includes a friction member arranged along the circumferential direction of the manual screwing member, and a limiting plate in frictional contact with the friction member is arranged on the upper housing.

[0011] As a further improvement of the present invention, the friction member is a rubber ring sleeved outside the manual screwing member, a limiting plate perforation for the manual screwing member to pass through is provided on the limiting plate, and the rubber ring is in frictional contact with the inner side wall of the limiting plate perforation.

[0012] As a further improvement of the present invention, a rubber ring limiting platform for restricting the axial movement of the rubber ring is further provided on the limiting plate.

[0013] As a further improvement of the present invention, the damping mechanism includes a limiting tooth ring provided on the manual screwing member and an elastic claw provided on the upper housing;

[0014] The first end of the elastic claw is fixed on the upper housing, and a hook cooperating with the limiting tooth ring is provided at the second end of the elastic claw.

[0015] As a further improvement of the present invention, a limiting plate is provided on the upper housing, and a limiting perforation for the limiting tooth ring to pass through is provided on the limiting plate;

[0016] The elastic claws extend along the circumferential direction of the limiting perforation, and there are two of them. The two elastic claws are symmetrically arranged on the side wall of the limiting perforation.

[0017] As a further improvement of the present invention, the manual screwing member includes a screwing cover and a connecting shaft connecting the first gear and the screwing cover;

[0018] The limiting tooth ring is provided on the side wall of the connecting shaft.

[0019] As a further improvement of the present invention, the connecting shaft includes a plurality of elastic clamping feet arranged in a ring on the first gear, a convex platform provided on the screwing cover, a clamping groove for clamping with the elastic clamping feet is provided on the convex platform, a limiting portion is provided in the clamping groove, the first end of the limiting portion is fixed at the bottom of the clamping groove, and the second end of the limiting portion extends between two adjacent elastic clamping feet.

[0020] As a further improvement of the present invention, the gear assembly includes a worm and a second gear coaxially arranged on the worm;

[0021] The first gear is a face gear provided on the manual screwing member, the tooth profile of the face gear is a straight tooth, and the second gear is a straight gear meshing with the face gear.

[0022] A wearable article, characterized in that it includes the above-mentioned rotary knob type cord tightening device, the wearable article has a flexible substrate and a cord provided on the flexible substrate, and the rotary knob type cord tightening device cooperates with the cord to perform tightening or loosening operations on the flexible substrate.

[0023] Compared with the prior art, the knob-type cord tightening device disclosed in the embodiments of the present invention provides a certain resistance to the rotation of the knob member by setting a damping mechanism, and the screwing force must be at least greater than this resistance to make the screwing member rotate, thereby avoiding the situation that the screwing member rotates under the state of vibration or shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0025] Figure 2 is an exploded view of the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0026] Figure 3 is a schematic internal structure view of the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0027] Figure 4 is a first schematic structure view of the limiting plate in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0028] Figure 5 is a second schematic structure view of the limiting plate in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0029] Figure 6 is a schematic installation structure view of the worm and the second gear in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0030] Figure 7 is a first schematic structure view of the winding shaft in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0031] Figure 8 is a second schematic structure view of the winding shaft in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0032] Figure 9 is a schematic structure view of the manual screwing member in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0033] Figure 10 is a first schematic structure view of the first gear in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0034] Figure 11 is a second schematic structure view of the first gear in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0035] Figure 12 is a schematic structure view of the screwing cover in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0036] Figure 13 It is the first structural schematic diagram of the upper shell in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0037] Figure 14 It is the second structural schematic diagram of the upper shell in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0038] Figure 15 It is the top view of the upper shell in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0039] Figure 16 It is the bottom view of the upper shell in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0040] Figure 17 It is the first structural schematic diagram of the separator in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0041] Figure 18 It is the second structural schematic diagram of the separator in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0042] Figure 19 It is the structural schematic diagram of the base in the manual cord tightening device disclosed in Embodiment 1 of the present invention;

[0043] Figure 20 It is the exploded view of the manual cord tightening device disclosed in Embodiment 2 of the present invention;

[0044] Figure 21 It is the structural schematic diagram of the screwing cap in the manual cord tightening device disclosed in Embodiment 2 of the present invention;

[0045] Figure 22 It is the structural schematic diagram of the limiting plate in the manual cord tightening device disclosed in Embodiment 2 of the present invention;

[0046] Explanation of reference numerals: 1 - driving mechanism, 11 - worm, 12 - second gear, 13 - manual screwing member, 131 - first gear, 133 - screwing cap, 134 - connecting shaft, 1340 - buckling groove, 1341 - elastic clamping foot, 1342 - boss, 1343 - hook portion, 1344 - limiting block, 135 - rotating shaft hole,

[0047] 2 - winding shaft, 21 - winding disc, 22 - toothed disc, 23 - connecting portion, 24 - rotating shaft,

[0048] 4 - rotating shaft, 5 - base, 50 - winding shaft positioning groove, 51 - support plate,

[0049] 6 - Upper housing, 60 - Cavity, 601 - Rope winding cavity, 61 - First channel, 62 - First limiting groove, 63 - Second limiting groove, 64 - Screw member accommodating groove, 641 - Groove bottom plate, 642 - Gear perforation, 65 - Limiting plate, 650 - Limiting plate perforation, 651 - Rubber ring limiting platform

[0050] 7 - Partition member, 70 - Perforation, 71 - Second channel, 72 - Top plate, 721 - First support portion, 722 - Second support portion, 723 - First avoidance groove, 724 - Second avoidance groove, 725 - Tooth disc support ring, 73 - First side plate, 74 - Second side plate

[0051] 8 - Damping mechanism, 81 - Limiting gear ring, 82 - Elastic claw, 821 - Hook Specific embodiments

[0052] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0053] Embodiments of the present invention: As Figure 1 shown in FIGS. -19, a manual rope tightening and loosening device is disclosed, which includes a base 5, an upper housing 6 cooperating with the base 5, a driving mechanism 1, and a winding shaft 2 rotatably installed between the base 5 and the upper housing 6.

[0054] The winding shaft 2 has a winding disc 21 for winding the rope and a tooth disc 22 coaxially arranged with the winding disc 21; the driving mechanism 1 drives the winding disc 21 to rotate through the tooth disc 22 to tighten or loosen the rope.

[0055] The driving mechanism 1 includes a manual screw member 13 and a gear assembly for driving the tooth disc 22 to rotate, and the manual screw member 13 drives the gear assembly. In this embodiment, the gear assembly includes a worm 11 meshing with the tooth disc 22 and a second gear 12 coaxially arranged on the worm 11, and a first gear 131 meshing with the second gear 12 is arranged on the manual screw member 13. Of course, in other embodiments, the gear assembly can also be multiple groups of meshing spur gears. As Figure 6 shown, the second gear 2 is a gear arranged on the worm 11. The manual screw member 13 drives the second gear 22 to rotate circumferentially. Since the second gear 22 is coaxially arranged with the worm 11, the manual screw member 13 can drive the worm 11 to rotate circumferentially during the rotation process. Correspondingly, a rack adapted to the helical rack on the tooth disc 22 is arranged at the position where the worm 11 meshes with the tooth disc 22. The rotation of the tooth disc 22 is driven by the circumferential rotation of the worm 11.

[0056] In this embodiment, as Figure 2 or Figure 21As shown, the knob-type cord tightening device further includes a damping mechanism 8 that cooperates with the manual screwing member 13 and provides resistance limitation for the manual screwing member 13. By providing the damping mechanism 8, resistance is provided for the circumferential rotation of the manual screwing member 13. Only when the torsional force applied to the manual screwing member 13 is at least greater than this resistance can the manual screwing member 13 rotate. Of course, the screwing force on the manual screwing member 13 also needs to be greater than the resistance generated by the gear assembly and the winding shaft 2 against the manual screwing member 13 by the cord to drive the manual screwing member 13 to rotate. By providing the damping mechanism 8, the situation where the screwing member rotates when the manual screwing member 13 is in a vibrating or shaking state is avoided.

[0057] As Figure 2 shown in FIG. -3, the manual screwing member 13 is rotatably mounted on the upper housing 6 through a rotating shaft 4. In this embodiment, the rotating shaft 4 is fixed on the upper housing 6, and the central axis of the rotating shaft 4 is parallel to the central axis of the winding shaft 2. As Figure 9 shown in FIG. -11, the manual screwing member 13 is provided with a first gear 131 for meshing with the second gear 12. The first gear 131 is provided at the bottom end of the manual screwing member 13.

[0058] In this embodiment, the second gear 131 is a face gear provided at the bottom end of the manual screwing member 13. The tooth profile on the second gear 131 is a straight tooth. Correspondingly, the first gear 12 is a spur gear. In another embodiment, the second gear 131 can also be provided as a hypoid gear or a bevel gear. At this time, the tooth profile on the second gear 131 can be a straight bevel tooth, an arc bevel tooth, a cycloid bevel tooth or a hypoid tooth, and the specific form of the first gear 12 is adapted to the second gear 131.

[0059] During use, a screwing cap 133 for facilitating manual screwing operation is provided on the screwing member 13. The screwing member 13 rotates circumferentially with the rotating shaft 4 as the axis of rotation. The first gear 131 provided at the bottom end of the screwing member 13 rotates circumferentially as the screwing member 13 rotates circumferentially. The first gear 131 drives the rotation of the worm 11 through the second gear 12, and the worm 11 drives the winding shaft 2 to rotate to tighten or loosen the cord.

[0060] In this embodiment, the worm 11 is used to drive the winding shaft 2 to rotate. Since the worm 11 has a self-locking property, the reverse driving effect of the winding shaft 2 is avoided during use, that is, when the winding shaft 2 rotates under the action of the rope belt, it does not drive the worm 11 to rotate in the reverse direction. In the prior art, if a design of using an ordinary gear to drive the winding shaft 2 is adopted, a locking device for restricting the reverse driving of the winding shaft 2 must be designed. The technical solution disclosed in this embodiment omits the locking structure for locking the position of the winding shaft 2 in the prior art, which not only simplifies the structure, saves production costs, but also the locking structure in the prior art is relatively complex during the assembly process. Therefore, this embodiment also facilitates the assembly of the entire screw-type rope belt tightening device and can effectively improve production efficiency.

[0061] In addition, in this embodiment, setting the rotating shaft 4 parallel to the central axis of the winding shaft 2 can more intuitively reflect the rotation direction of the winding shaft 2 when rotating the manual screwing member 13, so as to better achieve synchronous rotation between the manual screwing member 13 and the winding shaft 2. It facilitates the control of the winding shaft 2 by the manual screwing member 13. In fact, the manual screwing member 13 can also be arranged in the axial direction of the worm 11. However, in this state, the manual screwing member 13 reflects the rotation direction of the worm 11. Since the central axis of the worm 11 is perpendicular to and intersects the central axis of the winding shaft 2, the rotation direction of the worm 11 cannot intuitively reflect the rotation direction of the winding shaft 2. Therefore, it is impossible to intuitively judge the direction in which the manual screwing member 13 needs to rotate.

[0062] At the same time, during the installation and use of the screw-type rope belt tightening device, the base 5 is generally fixedly arranged parallel to the surface of the wearable article. If the manual screwing member 13 is arranged in the central axis direction of the worm 11, since the axis of the winding shaft 2 is arranged perpendicular to the base 5, the axis direction of the worm 11 can only be arranged parallel to the base 5, so that the axis on the manual screwing member 13 is arranged parallel to the base 5. At this time, the plane where the screwing cover 133 on the manual screwing member 13 is located can only be perpendicular to the base 5. The above design limits the size and operability of the screwing cover 133. Because the larger the screwing cover 133 is, the smaller the space between the base 5 and the screwing cover 133 is, and the smaller the space is, the worse the operability is. And if the screwing cover 133 is too small, a larger screwing force is required to act on the screwing member 13, which is also not convenient for operation and use.

[0063] In this embodiment, as Figure 9 shown in FIG. -12, the manual screwing member 13 is also connected to the connecting shaft 134 of the first gear 131 and the screwing cover 133. The first gear 131 is used to mesh with the second gear 22. The first gear 131 is provided with a rotating shaft hole 135 adapted to the rotating shaft 4, and the connecting shaft 134 is provided with a first hole communicating with the rotating shaft hole 135.

[0064] In this embodiment, the screwing cap 133 and the first gear 131 are detachably connected and fixed. Specifically, as Figure 10 and Figure 12 shown, the connecting shaft 134 includes a plurality of elastic locking feet 1341 arranged in a ring on the first gear 131 and a boss 1342 arranged on the screwing cap 133. In this embodiment, the boss 1342 is a cylindrical boss. A locking groove 134 for engaging with the elastic locking feet 341 is provided on the boss 1342, and a hook portion 1343 for hooking with the hooks on the elastic locking feet 341 is provided in the locking groove 134. The cooperation between the hooks and the hook portion 1343 enables the screwing cap 133 and the first gear 131 to move away from each other axially. Further, in order to limit the relative rotation between the screwing cap 133 and the first gear 131 in the circumferential direction, a limiting portion 1344 is further provided in the locking groove 134. The first end of the limiting portion 1344 is fixed to the bottom of the locking groove 134, the second end of the limiting portion 1344 extends into the gap between two adjacent elastic locking feet 341, and both ends of the limiting portion 1344 are in contact with two adjacent elastic locking feet 341 respectively.

[0065] In the prior art, to limit the rotation of the screwing cap 133 and the first gear 131 in the circumferential direction, a clamping groove adapted to the hooks of the elastic locking feet 341 is usually provided on the side wall of the boss 1342, and the hooks are in contact with the side wall of the clamping groove to prevent relative rotation between the two in the circumferential direction. Compared with the prior art, the side wall of the clamping groove only contacts the hooks with a small contact area, and its limiting effect is limited. In this embodiment, the limiting portion 1344 contacts the side wall of the entire elastic locking foot 341 to limit relative rotation between the two in the axial direction, and the effect is better, which can more effectively prevent relative rotation between the two.

[0066] In this embodiment, both the winding shaft 2 and the worm 11 are rotatably installed in the cavity 60 between the base 5 and the upper housing 6. A first channel 61 communicating the inside and outside of the cavity 60 is provided on the upper housing 6 or the base 5. The cord is connected to the winding disc 21 in the cavity 60 through the first channel 61, and a cord placement groove for positioning the cord is provided on the winding disc 21.

[0067] The upper housing 6 can be set as shown in Figure 13 and Figure 14 shown. The cavity 60 is provided on the upper housing 6. At this time, the base 5 corresponding to the upper housing 6 is as shown in Figure 19The flat shape shown. In the above embodiment, the first channel 61 is provided on the upper housing 6. In addition, in another embodiment, the base 5 can also be provided with a groove-shaped structure. The base 5 is provided with a bottom plate and peripheral side plates perpendicular to the bottom plate. The upper housing 6 is fixed on the peripheral side plates. At this time, the cavity 60 is provided on the base 5. In this state, the first channel 61 is provided on the base 5.

[0068] Further, as Figure 2 , Figure 17 and Figure 18 shown, in order to prevent the worm 11 and gear components such as the toothed disk 22 from affecting the winding of the rope belt during the winding process, in the embodiment of the present invention, a partition member 7 is further provided on the base 5. The partition member 7 divides the cavity 60 into a rope winding cavity 601 and a gear cavity. The partition member 7 is provided with a perforation 70 communicating the rope winding cavity 601 with the gear cavity. The connecting portion 23 between the toothed disk 22 and the winding disk 21 passes through the perforation 70. The toothed disk 22 and the worm 11 are arranged in the gear cavity, and the winding disk 21 is arranged in the rope winding cavity 601. The rope winding cavity 601 is communicated with the first channel 61 through a second channel 71.

[0069] The partition member 7 divides the cavity 60 into two independent chambers. Among them, the rope winding cavity 601 is used solely for winding the rope belt, while the gear cavity is used for the installation and fixation of the worm 11 and for placing the gear parts interconnected with the worm 11. The setting of the above structure prevents the rope belt from winding around gear parts such as the worm 11 during the winding process, thereby affecting the transmission of gear parts such as the worm 11.

[0070] Specifically, as Figure 17 and Figure 18 shown, in this embodiment, the partition member 7 is provided with a top plate 72 and a first side plate 73 and a second side plate 74 distributed on both sides of the top plate 72 and extending vertically downward along the top plate 72. The perforation 70 is provided on the top plate 72, and there are two second channels 71. The two second channels 71 are respectively provided on the first side plate 73 and the second side plate 74.

[0071] In this embodiment, the worm 11 is rotatably installed on the partition member 7. Specifically, the top plate 72 is provided with a first support portion 721 and a second support portion 722, and the first support portion 721 and the second support portion 722 respectively support on both sides of the worm 11.

[0072] In this embodiment, the upper housing 6 is provided with a first limiting groove 62 and a second limiting groove 63 which are respectively adapted to the two sides of the worm 11; the first limiting groove 62 is opposite to the position of the first supporting portion 721, and the second limiting groove 63 is opposite to the position of the second supporting portion 722. The first limiting groove 62 and the second limiting groove 63 are used to limit the swing generated by the worm 11 during rotation.

[0073] The top plate 72 is further provided with a first avoidance groove 723 adapted to the worm 11 and a second avoidance groove 724 adapted to the spur gear 12. The provision of the first avoidance groove 723 and the second avoidance groove 724 can prevent the worm 11 from protruding too much from the top end of the separator 7 after being installed on the separator 7, making the volume of the entire device smaller after installation and fixation. This is beneficial to the integrated design of the device.

[0074] Since the spur gear 12 is provided on the worm 11, the worm 11 needs to be elevated by the first supporting portion 721 and the second supporting portion 722, and the installation position of the worm 11 is higher than that of the base 5. For further integrated design of the device, the winding disc 21 is arranged between the toothed disc 22 and the base 5. In this way, the winding disc 21 is arranged close to the base 5, and the winding rope cavity 601 is the cavity formed by the separator 7 and the base 5. Through the above structural design, the toothed disc 22 is lifted, and the winding disc 21 actually plays a role in supporting the toothed disc 22, so as to facilitate the engagement between the toothed disc 22 and the elevated worm 11.

[0075] Since the winding disc 21 is arranged close to the base 5, in order to more conveniently connect the threaded belt passing through with the winding disc 21, the first channel 61 is arranged on the upper housing 6 close to the base 5.

[0076] In this embodiment, as Figure 19 shown, the base 5 is provided with a winding shaft positioning groove 50 adapted to the winding disc 21. The winding shaft positioning groove 50 and the winding disc 21 are in clearance fit, and the winding disc 21 rotates in the winding shaft positioning groove 50. The winding shaft 2 is further provided with a rotating shaft 24, and the upper housing 6 is provided with a groove body adapted to the rotating shaft 24. The rotating shaft 24 and the groove body are in clearance fit. The winding shaft 2 rotates under the limiting action of the groove body and the winding shaft positioning groove 50. By adopting the above method, since the contact surface between the bottom end of the winding disc 21 and the base 5 is large, the frictional torque generated during its rotation is large. Therefore, as a further improvement, as Figure 17As shown, a gear disc support ring 725 is further provided on the top plate 72, and the gear disc support ring 725 is arranged along the edge of the through hole 70. The gear disc support ring 725 plays a supporting role for the gear disc 22. It should be noted that the maximum diameter of the gear disc 22 is larger than the diameter of the winding disc 21, and the diameter of the through hole 70 is only for the winding disc 21 to pass through. After the gear disc support ring 725 supports the winding shaft 2, the winding shaft 2 takes the gear disc support ring 725 as the rotation support point during the rotation process, avoiding the frictional contact between the bottom end of the winding disc 21 and the base 5, thereby reducing the frictional resistance. In order to further reduce the frictional force generated during the rotation of the two, the side of the gear disc support ring 725 that fits with the gear disc 22 is set to be arc-shaped. Through the setting of the above structure, the frictional resistance received by the winding shaft 2 during the rotation process is smaller, thereby improving the transmission efficiency.

[0077] Further, as Figure 19 shown, in order to facilitate the installation and fixation of the manual cord tightening device to the wearable article, a support plate 51 is provided on the base 5. The support plate 51 is arranged in a circle along the circumferential direction of the base 5. The support plate 51 is arranged to be buried in the wearable article, and the setting of the support plate 51 facilitates the installation and fixation of the manual cord tightening device.

[0078] In this embodiment, as Figure 13 and Figure 15 shown, a screwing member accommodating groove 64 is provided on the upper housing 6, and the rotating shaft 4 is arranged on the groove bottom plate 641 of the screwing member accommodating groove 64; a gear through hole 642 adapted to the second gear 12 is further provided on the groove bottom plate 641. The gear through hole 642 communicates the screwing accommodating groove 64 with the cavity 60, and the spur gear 12 passes through the gear through hole 642 and meshes with the first gear 131 in the screwing accommodating groove 64.

[0079] In this embodiment, the manual screwing member 13 can be rotatably connected to the rotating shaft 4 through a bearing. Specifically, the inner ring of the bearing is fixed on the rotating shaft 4, and the outer ring of the bearing is fixed on the rotating shaft hole 135 of the manual screwing member 13. Of course, the rotating shaft hole 135 can also be set to have a clearance fit with the rotating shaft 4 to realize the rotational installation of the manual screwing member 13 and the rotating shaft 4.

[0080] Embodiment 1

[0081] Specifically, in this embodiment, the damping mechanism 8 includes a friction member arranged along the circumferential direction of the manual screwing member 13, and a limiting plate 65 that is in frictional contact with the friction member is provided on the upper housing 6. The friction member is a rubber ring sleeved outside the manual screwing member 13, and a limiting plate through hole 650 for the manual screwing member 13 to pass through is provided on the limiting plate 65, and the rubber ring is in frictional contact with the inner side wall of the limiting plate through hole 650.

[0082] The rubber ring is sleeved on the outside of the connecting shaft 134. Specifically, the rubber ring is sleeved on the outside of the boss 1342. The rubber ring contacts the inner wall of the limiting plate through-hole 650. In fact, the rubber ring is clamped between the manual screwing member 13 and the limiting plate 65. During the rotation process, due to the existence of the rubber ring, the manual screwing member 13 will be subject to resistance during rotation. Only when the screwing force applied to the manual screwing member 13 is at least greater than this resistance can the screwing member 13 be driven to rotate. The setting of the above structure provides certain conditions for the rotation of the manual screwing member 13, and avoids the rotation of the manual screwing member 13 under unreasonable conditions such as vibration.

[0083] In order to better enhance the blocking effect of the rubber ring on the manual screwing member 13, damping oil can also be added between the rubber ring and the limiting plate through-hole 650.

[0084] Furthermore, a rubber ring limiting platform 651 is also provided on the limiting plate 65. The rubber ring limiting platform 651 is used to limit the rubber ring from sliding axially along the connecting shaft 134 to a position where it does not abut against the inner wall of the limiting plate through-hole 650. In this embodiment, the manual screwing member 13 can be rotatably installed on the rotating shaft 4 through a bearing. The installation and fixation through the bearing can prevent the manual screwing member 13 from generating play in the axial direction of the rotating shaft 4, thereby driving the rubber ring to deviate to a position not opposite to the inner wall of the limiting plate through-hole 650. In this embodiment, the limiting plate 650 is arranged at the notch position of the screwing member accommodating groove 64.

[0085] It should be noted that the damping mechanism 8 in this embodiment can also be applied to other structures of the screwing type cord tightening device, that is, as long as there is a cord tightening device where the screwing member 13 rotates circumferentially, the damping mechanism 8 can play a role in restricting the rotation of the screwing member 13, and it is not limited to the cord tightening device that drives the winding shaft 2 to rotate through the worm 11 in the embodiment of the present application.

[0086] Embodiment 2

[0087] In this embodiment, the only difference from Embodiment 1 is the specific damping mechanism 8. In this embodiment, as shown in FIG. Figure 20 -22, the damping mechanism 8 includes a limiting gear ring 81 provided on the manual screwing member 13 and an elastic claw 82 provided on the upper housing 6. The limiting gear ring 81 is arranged on the outer wall of the screwing member 13. Specifically, the limiting gear ring 81 is arranged on the outer wall of the boss 1342 on the connecting shaft 134.

[0088] The first end of the elastic claw 82 is fixed on the upper housing 6, the second end of the elastic claw 82 is a free end, and a hook 821 cooperating with the limiting tooth ring 81 is provided at the second end of the elastic claw 82. During the rotation process, the end of the elastic claw 82 provided with the hook 821 will receive a driving force from the limiting tooth ring 81, and this driving force will cause the elastic claw 82 to undergo elastic deformation.

[0089] The cooperation between the hook 821 on the elastic claw 82 and the limiting tooth ring 81 provides a certain resistance to the rotation of the manual screwing member 13. Only when the screwing force applied to the manual screwing member 13 is at least greater than this resistance is it possible for the screwing member 13 to rotate, and a rattling sound will occur during the rotation process to indicate that the screwing member 13 is tightening or loosening at this time, facilitating the user to obtain feedback in a timely manner.

[0090] As Figure 22 shown, in this embodiment, a limiting plate 65 is provided on the upper housing 6, and a limiting through hole 650 for the limiting tooth ring 81 to pass through is provided on the limiting plate 65. The elastic claw 82 is provided on the limiting plate 65.

[0091] Specifically, the elastic claw 82 extends along the circumferential direction of the limiting through hole 650, and the elastic claw 82 is arc-shaped. Setting the elastic claw 82 to be arc-shaped can enhance the elastic force of the elastic claw 82 and better provide resistance for the manual screwing member 13. At the same time, the elastic claw 82 is arranged to surround the outside of the connecting shaft 134. The above structural design makes the elastic claw 82 have better applicability, is beneficial to the optimization of the overall structure, makes the overall structure more compact, and is beneficial to reducing the volume.

[0092] In this embodiment, two elastic claws 82 are provided, and the two elastic claws 82 are symmetrically arranged on the side wall of the limiting through hole 650. Symmetrically arranging two elastic claws 82 can better provide resistance to the rotation of the manual screwing member 13. In addition, the number of elastic claws 82 can be set according to specific requirements.

[0093] In addition, the present invention also discloses a wearable article, which includes the above-mentioned manual rope tightening and loosening device. The wearable article has a flexible substrate and a rope provided on the flexible substrate, and the manual rope tightening and loosening device cooperates with the rope to perform tightening or loosening operations on the flexible substrate.

[0094] Furthermore, this screwing type rope tightening and loosening device can be applied to shoes, that is, the wearable article is a shoe, the flexible base is the shoe body, and the manual rope tightening and loosening device is arranged on the shoe body and cooperates with the rope to perform tightening or loosening operations on the shoe body.

[0095] In addition, the manual cord tightening device can also be applied to wearable products such as underwear or schoolbags. The above has described in detail the structure, features and effects of the present invention according to the illustrated embodiments. The above is only the preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or equivalent embodiments modified into equivalent changes, still within the spirit covered by the specification and the drawings, should be within the protection scope of the present invention.

Claims

1. A knob - type cord tightening device, comprising a base, an upper housing cooperating with the base, a driving mechanism, and a winding shaft rotatably mounted between the base and the upper housing; The winding shaft has a winding disc for winding the cord and a toothed disc coaxially arranged with the winding disc; the driving mechanism drives the winding disc to rotate through the toothed disc to tighten or loosen the cord; It is characterized in that: The driving mechanism includes a manual screwing member rotatably mounted on the upper housing and a gear assembly for driving the toothed disc to rotate; a first gear meshing with the gear assembly is arranged on the manual screwing member, the manual screwing member is rotatably mounted on the upper housing through a rotating shaft, and the rotating shaft is arranged parallel to the central axis of the winding shaft; The gear assembly includes a worm and a second gear coaxially arranged on the worm. The first gear is a face gear arranged on the manual screwing member, the tooth profile of the face gear is a straight tooth, the second gear is a straight gear meshing with the face gear, and a rack adapted to the helical rack on the toothed disc is arranged at the position where the worm meshes with the toothed disc. The circumferential rotation of the worm can drive the toothed disc to rotate; Both the winding shaft and the worm are rotatably mounted in the cavity between the base and the upper housing. The winding disc is arranged between the toothed disc and the base. A first channel communicating the inside and outside of the cavity is arranged on the upper housing or the base. A screwing member accommodating groove is arranged on the upper housing, the rotating shaft is arranged on the bottom plate of the screwing member accommodating groove, and a gear through - hole adapted to the first gear is also arranged on the bottom plate; The knob - type cord tightening device further includes a damping mechanism cooperating with the manual screwing member and providing resistance limitation for the manual screwing member. The damping mechanism includes a friction member arranged along the circumferential direction of the manual screwing member, and a limiting plate in frictional contact with the friction member is arranged on the upper housing; The damping mechanism provides resistance to the circumferential rotation of the manual screwing member. Only when the torsional force applied to the manual screwing member is at least greater than this resistance can the manual screwing member rotate. The screwing force on the manual screwing member also needs to be greater than the resistance generated by the gear assembly and the winding shaft against the cord on the manual screwing member to drive the manual screwing member to rotate. The setting of the damping mechanism avoids the situation that the screwing member rotates under the state of being vibrated or shaken.

2. The knob-type cord tightening device according to claim 1, wherein The friction member is a rubber ring sleeved outside the manual screwing member. A limiting - plate through - hole for the manual screwing member to pass through is arranged on the limiting plate, and the rubber ring is in frictional contact with the inner side wall of the limiting - plate through - hole.

3. The knob-type cord tightening device according to claim 2, characterized in that A rubber - ring limiting platform for restricting the axial movement of the rubber ring is also arranged on the limiting plate.

4. The knob-type cord tightening device according to claim 1, characterized in that, The damping mechanism includes a limiting tooth ring arranged on the manual screwing member and an elastic claw arranged on the upper housing; The first end of the elastic claw is fixed on the upper housing, and a hook cooperating with the limiting tooth ring is arranged at the second end of the elastic claw.

5. The knob-type cord tightening device according to claim 4, wherein, A limiting plate is arranged on the upper housing, and a limiting through - hole for the limiting tooth ring to pass through is arranged on the limiting plate; The elastic claws extend along the circumferential direction of the limit perforation, and there are two of them, and the two elastic claws are symmetrically arranged on the side wall of the limit perforation.

6. The knob-type cord tightening device according to claim 4, wherein, The manual screwing member includes a first gear screwing cover and a connecting shaft connecting the first gear and the screwing cover; The limit tooth ring is arranged on the side wall of the connecting shaft.

7. The knob-type cord tightening device according to claim 6, characterized in that, The connecting shaft includes a plurality of elastic clamping feet arranged annularly on the first gear, and a boss arranged on the screwing cover. A clamping groove for clamping with the elastic clamping feet is arranged on the boss, and a limiting portion is arranged in the clamping groove. The first end of the limiting portion is fixed at the bottom of the clamping groove, and the second end of the limiting portion extends between two adjacent elastic clamping feet.

8. A wearable article, characterized in that, It includes a knob-type cord tightening device according to any one of claims 1-7. The wearable article has a flexible substrate and a cord arranged on the flexible substrate. The knob-type cord tightening device cooperates with the cord to perform tightening or loosening operations on the flexible substrate.

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