Pawl disc and cord reel and article

Abstract

The application provides a ratchet disc and a rope winding and unwinding device and an article. The rope winding and unwinding device comprises a knob, a connecting structure, a ratchet disc, a line wheel and a base. When the knob is rotated in a first direction, the driving part of the knob drives the ratchet disc to rotate in the first direction and drives the connecting structure to rotate, so as to drive the line wheel to rotate in the first direction to tighten the rope. When the knob is rotated in a second direction, the driving part drives the pawl of the ratchet disc to disengage from the first engaging part of the base, so that the ratchet disc can rotate in the second direction and drive the connecting structure to rotate. At this time, under the action of external force, the rope can drive the line wheel to rotate in the second direction and be released from the line wheel. When the knob is lifted away from the base in the axial direction under the action of external force, the ratchet disc and the connecting structure are away from the line wheel, so that the line wheel can completely release the rope under the action of external force.

Description

Technical Field

[0001] This application relates to a ratchet disc and a rope winding and unwinding device and article. Background Technology

[0002] To make some household items suitable for different users, many household items are designed with drawstrings, such as sneakers, hats, sweatshirts, and gloves. The tightness of the item can be adjusted by tying a knot in the drawstring. However, in daily life, the knotted drawstring is sometimes easy to loosen and come undone. For example, shoelaces can easily become dirty or cause tripping. In particular, very young children cannot tie the drawstring themselves, and the elderly are also very inconvenient to bend over to tie the drawstring due to their physical weakness, which can easily lead to danger.

[0003] Current cord release devices on the market allow users to tighten and release cords, such as those used in shoes to make it easier for users to put on and take off shoes. However, these devices require the cord to be completely released when releasing it. This means that if the cord becomes too tight and uncomfortable during use, the user has to completely release the cord and then tighten it again, paying close attention to the tightness, resulting in a poor user experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, it is necessary to provide a ratchet disc and a rope winding and unwinding device and article.

[0005] In a first aspect, this application provides a rope winding and unwinding device, comprising:

[0006] The base includes a cylindrical body, a first engaging part disposed inside the cylindrical body, a partition disposed inside the cylindrical body, and a first threading hole penetrating the cylindrical body;

[0007] A reel, disposed within the cylindrical body, includes a first substrate, a second substrate, and a sidewall connecting the first substrate and the second substrate. The first substrate and the second substrate are disposed opposite to each other. The first substrate abuts against the partition plate, and the second substrate is located on the side of the first substrate away from the partition plate. The first substrate, the second substrate, and the sidewall form a winding area for storing ropes. The sidewall is provided with a second threading hole penetrating the sidewall.

[0008] A ratchet disc, disposed on the side of the first substrate away from the second substrate, includes a base having a first through hole, a ratchet connected to the base, and a first engaging portion disposed on the base, wherein the ratchet is used to engage with the first engaging portion;

[0009] A knob, located on the side of the ratchet disc away from the spool, includes a cover plate, a side plate connecting to one side of the cover plate, a drive member located on the side of the cover plate facing the side plate, and a second engaging portion located on the side of the cover plate facing the side plate; the cover plate and the side plate enclose a receiving cavity with an opening, and a portion of the cylindrical body is located in the receiving cavity; the second engaging portion engages with the first engaging portion; and

[0010] A connecting structure is provided through the first through hole and connects the ratchet disc and the reel; the connecting structure is movably connected to the reel.

[0011] When the knob is rotated in the first direction, the driving member drives the pawl disc to rotate in the first direction and drives the connecting structure to rotate, thereby driving the spool to rotate in the first direction to tighten the rope. When the knob is rotated in the second direction opposite to the first direction, the driving member drives the pawl to disengage from the first engagement part, so that the pawl disc can rotate in the second direction and drive the connecting structure to rotate. At this time, under the action of external force, the rope can drive the spool to rotate in the second direction and be released from the spool. When there is no external force, the spool stops rotating. When the knob is lifted axially under the action of external force and moves away from the base, the pawl disc and the connecting structure move away from the spool, so that the rope can be completely released from the spool under the action of external force.

[0012] Preferably, the connecting structure includes a connector disposed in the first through hole, the connector including a main body, a connecting block disposed in the main body, and a first tooth disposed at one end of the main body; the ratchet disc further includes a connecting groove extending along the axial direction of the base, the connecting groove communicating with the first through hole, the connecting block being disposed in the connecting groove and slidable along the connecting groove; a second tooth is provided on the side of the first substrate away from the second substrate, the second tooth being used to engage with the first tooth, so that the connector can push the spool to rotate in the first direction, and the connector can rotate in the second direction to disengage from the spool.

[0013] Preferably, the first tooth portion includes a first inclined surface and a first arcuate surface disposed opposite to the first inclined surface; the second tooth portion includes a second inclined surface and a second arcuate surface disposed opposite to the second inclined surface; the first inclined surface is used to abut against the second inclined surface to realize that the connector pushes the spool to rotate along the first direction; the first arcuate surface is used to abut against the second arcuate surface to realize that the connector rotates along the second direction to disengage from the spool.

[0014] Preferably, the connecting structure further includes a positioning element and an elastic element. The positioning element includes a connecting plate and a positioning post connected to the connecting plate. The connecting plate has a first connecting portion, and the positioning post passes through the first through hole. The base of the ratchet disk has a second connecting portion, and the first connecting portion is connected to the second connecting portion. The elastic element is sleeved on the positioning post. The connecting element has a second through hole, and the positioning post passes through the second through hole. The side of the connecting element away from the first substrate has an abutting surface. One end of the elastic element abuts against the abutting surface, and the other end abuts against the connecting plate, for resetting the connecting element.

[0015] Preferably, the positioning post includes a first end and a second end opposite to the first end, the first end being connected to the connecting plate; the end of the positioning post near the second end is provided with an annular groove, the spool is provided with a protrusion, the protrusion is provided in the groove, the second end is located on the side of the protrusion away from the first end, the protrusion can slide circumferentially along the groove, the positioning post can move axially so that the groove disengages from the protrusion and the second end abuts against the side of the protrusion facing the first end; the knob is provided with a first positioning part, the connecting plate is provided with a second positioning part on the side away from the positioning post, the first positioning part is connected to the second positioning part.

[0016] Preferably, the spool includes a third through hole penetrating the first substrate and the second substrate, and the positioning post passes through the third through hole; the spool includes a wall plate, the wall plate is connected to the first substrate and extends toward the second substrate, the wall of the third through hole includes the wall plate, and the protrusion is provided on the side of the wall plate facing the third through hole; the spool also includes an opening groove, the opening groove is covered on the second substrate and extends toward the first substrate, and the opening groove communicates with the second threading hole.

[0017] Preferably, the base further includes a limiting structure, which is disposed on the side of the base away from the knob and abuts against the second substrate to confine the spool within the cylindrical body; the second substrate is provided with a damping member on the side away from the first substrate, and the damping member is multiple and arranged circumferentially along the edge of the second substrate. The damping member generates resistance when it abuts against the limiting structure. When the force exerted when the spool is rotated is greater than the resistance, the spool rotates relative to the base.

[0018] Preferably, the ratchet disc further includes a resistance arm disposed on the side of the base away from the knob. The resistance arm has a certain elasticity and is used to abut against the driving member to provide resistance. When the knob rotates in the second direction, the force exerted by the driving member on the resistance arm is greater than or equal to the resistance, and the ratchet disc rotates in the second direction.

[0019] Preferably, the pawl includes an elastic arm connected to the base, a second engagement portion for engaging with the first engagement portion, and a cylinder connecting the elastic arm and the second engagement portion. The cylinder has a connecting hole, and the base has a connecting post on the side facing the knob, with the connecting hole fitted onto the connecting post. The pawl disc also includes an abutment portion located on the outside of the base and adjacent to the connecting post. When the knob rotates in the first direction, the driving member abuts against the abutment portion to drive the pawl disc to rotate in the first direction. When the knob rotates in the second direction, the driving member abuts against the second engagement portion and moves radially along the pawl disc, and the cylinder rotates around the connecting post until the second engagement portion disengages from the first engagement portion.

[0020] Preferably, the knob further includes a first latching member, which is located on the inner side of the side wall; the base is provided with a second latching member, which is located on the outer side of the cylindrical body; the first latching member is used to engage with the second latching member to prevent the knob from detaching from the base.

[0021] Preferably, it further includes a chassis for mounting the rope winding device on an external object, the chassis being located at the end of the base away from the knob; the base further includes a third and a fourth fastener, and the base is provided with a fifth and a sixth fastener, the third and fourth fasteners being respectively engaged with the fifth and sixth fasteners.

[0022] Secondly, this application also provides an article comprising a first part, a second part, and a rope, and further comprising a rope winding and unwinding device as described above, the rope winding and unwinding device being used to tighten or release the rope to tighten or loosen the first part and the second part.

[0023] Preferably, the item is one of the following: shoes, hat, gloves, medical protective gear, helmet, storage device, ski protective gear, bag, or clothing.

[0024] Thirdly, this application also provides a ratchet disc for a rope winding and unwinding device. The ratchet disc includes a hollow annular base and a ratchet disposed on the base. The ratchet includes an elastic arm connected to the base and a second engaging portion connected to the elastic arm for engaging with the rope winding and unwinding device. The second engaging portion is located at the end of the elastic arm away from the base and is detachably connected to the base.

[0025] Preferably, the pawl further includes a cylinder disposed between the elastic arm and the second engagement portion, a connecting post is provided on the base, the cylinder is provided with a connecting hole, the pawl disc is integrally formed, and the cylinder and the connecting post are detachably connected through the connecting hole.

[0026] Compared to existing technologies, the ratchet disc provided in this application is integrally molded, and the cylinder and the connecting column are detachably connected. After manufacturing, during installation and use, it is only necessary to install the cylinder onto the connecting column, which effectively reduces the number of parts that realize the function of the ratchet disc, while ensuring the strength of the ratchet disc. This makes the ratchet disc easy to manufacture, thereby reducing production costs. The rope winding and unwinding device provided in this application can drive the spool to tighten the rope by rotating a knob in the first direction; when the knob is rotated in the second direction, the pawl and the connecting structure disengage from the spool, and the rope can be released when an external force is applied to the spool; when no external force is applied to the rope, the spool remains stationary, and when the knob is rotated further in the second direction, the knob, the pawl, and the connecting structure remain idle and cannot drive the spool to rotate in the second direction, thus ensuring that the rope is not squeezed out and avoiding the occurrence of the rope loosening or knotting in the spool, thereby ensuring the service life of the product; since the second engaging part engages with the first engaging part, the knob is connected to the pawl, so when the knob is lifted, the pawl and the connecting structure are also lifted, thereby disengaging the connecting structure from the spool, so that the rope can drive the spool to rotate around the second direction under the action of an external force, thereby releasing all the rope. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a perspective view of the rope winding and unwinding device according to an embodiment of this application;

[0029] Figure 2 This is a perspective view of the rope winding and unwinding device shown in the embodiment of this application from another angle;

[0030] Figure 3 yes Figure 1 Exploded view of the rope winding and unwinding device shown.

[0031] Figure 4 yes Figure 1 An exploded view of the rope winding and unwinding device from another angle;

[0032] Figure 5 yes Figure 1 A schematic diagram of the base of the rope winding and unwinding device shown.

[0033] Figure 6 yes Figure 5 A schematic diagram of the base from another angle;

[0034] Figure 7 yes Figure 1 A schematic diagram of the reel in the rope take-up and undo device shown;

[0035] Figure 8 yes Figure 7 A schematic diagram of another angle of the spool shown;

[0036] Figure 9 yes Figure 1 A partial structural diagram of the base and reel of the rope winding and unwinding device shown;

[0037] Figure 10 yes Figure 9 Enlarged view of section A in the middle;

[0038] Figure 11 yes Figure 1 A schematic diagram of the ratchet disc of the rope take-up and release device shown;

[0039] Figure 12 yes Figure 11 A schematic diagram of the ratchet disc from another angle;

[0040] Figure 13 yes Figure 11 A schematic diagram of the initial state of the ratchet disc of the rope take-up and release device shown.

[0041] Figure 14 yes Figure 13 A schematic diagram of the initial state of the ratchet disc at another angle;

[0042] Figure 15 yes Figure 1 A schematic diagram of the knob of the rope winding and unwinding device shown;

[0043] Figure 16 yes Figure 1A schematic diagram of the connection structure of the rope winding and unwinding device shown.

[0044] Figure 17 yes Figure 16 A schematic diagram of the connectors in the connection structure shown;

[0045] Figure 18 This is a schematic diagram of the rotation direction of the rope take-up and release device according to an embodiment of this application;

[0046] Figure 19 This is a cross-sectional schematic diagram of the rope take-up and release device according to an embodiment of this application rotating along a first direction;

[0047] Figure 20 This is a cross-sectional view of the rope take-up and release device of this application rotating along a first direction at another angle;

[0048] Figure 21 This is a cross-sectional schematic diagram of the rope take-up and release device according to an embodiment of this application rotating in a second direction;

[0049] Figure 22 This is a cross-sectional view of the rope take-up and release device of this application rotating along the second direction at another angle;

[0050] Figure 23 This is a schematic diagram of the rope release and take-up device of this application in the state of fully releasing the rope;

[0051] Figure 24 This is a cross-sectional schematic diagram of the rope take-up and release device according to an embodiment of this application with the rope fully released;

[0052] Figure 25 This is a cross-sectional schematic diagram of the rope winding and unwinding device according to an embodiment of this application when the rope is tightened;

[0053] Figure 26 This is a cross-sectional schematic diagram of the rope winding and unwinding device according to an embodiment of this application during the fine-tuning and release of the rope;

[0054] Figure 27 This is a schematic diagram of the structure of a shoe according to an embodiment of this application;

[0055] Figure 28 This is a schematic diagram of the structure of a hat according to an embodiment of this application;

[0056] Figure 29 This is a schematic diagram of the structure of a glove according to an embodiment of this application;

[0057] Figure 30 This is a schematic diagram of the structure of a medical protective garment according to one embodiment of this application;

[0058] Figure 31 This is a schematic diagram of the structure of a storage device according to an embodiment of this application.

[0059] Explanation of reference numerals in the attached figures:

[0060] 1. Rope winding and unwinding device; F, first direction; R, second direction;

[0061] 10. Knob; 10a. Receiving cavity; 11. Cover plate; 12. Side plate; 13. Driving component; 14. Second engaging part; 16. First positioning part; 17. First fastening component;

[0062] 20. Connecting structure; 21. Positioning element; 211. Connecting plate; 212. Positioning post; 213. First connecting part; 214. Second positioning part; 215. Protruding strip; 216. Annular groove; 217. First end; 218. Second end; 22. Elastic element; 23. Connecting element; 231. Main body; 231a. Second through hole; 232. Connecting block; 233. First tooth; 233a. First inclined surface; 233b. First arc-shaped surface; 234. Abutment surface;

[0063] 30. Pawl disc; 31. Base; 31a. First through hole; 32. Pawl; 321. Second engagement part; 322. Elastic arm; 323. Cylindrical part; 324. Connecting hole; 33. Abutment part; 35. Connecting groove; 36. Second connecting part; 37. Resistance arm; 38. Connecting post; 39. First engaging part; 391. First end face; 392. Second cross-section;

[0064] 40. Base; 40a. First threading hole; 41. Cylindrical body; 42. First engaging part; 43. Partition; 45. Second fastener; 46. Third fastener; 47. Fourth fastener; 48. Limiting structure; 481. First limiting member; 482. Second limiting member;

[0065] 50. Thread wheel; 50a. Winding area; 50b. Second thread hole; 50c. Third through hole; 50d. Opening slot; 50e. Clearance space; 51. First substrate; 52. Second substrate; 53. Side wall; 54. Wall panel; 55. Damping element; 551. Third inclined surface; 552. Fourth inclined surface; 553. Sliding part; 56. Second toothed part; 561. Second inclined surface; 562. Second arc-shaped surface; 57. Protrusion;

[0066] 60. Chassis; 61. Fifth fastener; 62. Sixth fastener;

[0067] 2. Shoes; 2a. The shoe itself; 2b. Shoelaces;

[0068] 3. Hat; 3a. Hat body; 3b. Hat drawstring;

[0069] 4. Gloves; 4a. Glove body; 4b. Glove cords;

[0070] 5. Medical protective gear; 5a. Medical protective gear body; 5b. Medical protective gear rope;

[0071] 6. Storage device; 6a. Storage body; 6b. Storage strap. Detailed Implementation

[0072] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0073] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0074] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0075] The terms "first," "second," and "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a specific order. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0076] Please see Figure 1 and Figure 2 This application provides a rope winding and unwinding device 1 for tightening and releasing ropes. Specifically, please refer to... Figure 3 and Figure 4The rope winding and unwinding device 1 includes a knob 10, a connecting structure 20, a ratchet disc 30, a reel 50, a base 40, and a chassis 60. The knob 10 is connected to the base 40. The connecting structure 20, the ratchet disc 30, and the reel 50 are all located within the space enclosed by the knob 10 and the base 40. The chassis 60 is located at the end of the base 40 away from the knob 10 and is used to place the rope winding and unwinding device 1 on items such as shoes 2, hats 3, gloves 4, medical protective gear 5, helmets, storage devices 6, ski protective gear, bags, and clothing.

[0077] Please see Figure 5 The base 40 includes a cylindrical body 41, a first engaging portion 42 disposed inside the cylindrical body 41, a partition 43 disposed inside the cylindrical body 41, and a first threading hole 40a penetrating the cylindrical body 41. It can be understood that the cylindrical body 41 is hollow inside and open at both ends. The first engaging portion 42 is a toothed ring circumferentially arranged around the inner wall of the cylindrical body 41, formed by multiple engaging teeth connected together; the partition 43 is located approximately in the middle of the cylindrical body 41; wherein the first engaging portion 42 and the first threading hole 40a are respectively located at both ends of the cylindrical body 41.

[0078] The reel 50 is disposed inside the cylindrical body 41. For details, please refer to [link / reference]. Figure 7 The reel 50 includes a first substrate 51, a second substrate 52, and a sidewall 53 connecting the first substrate 51 and the second substrate 52. The first substrate 51 and the second substrate 52 are disposed opposite to each other, with the first substrate 51 abutting against the partition 43. The second substrate 52 is located on the side of the first substrate 51 away from the partition 43. The first substrate 51, the second substrate 52, and the sidewall 53 form a winding area 50a for storing the rope. The sidewall 53 is provided with a second threading hole 50b penetrating the sidewall 53. The overall shape of the reel 50 is "I"-shaped, which facilitates the storage of the rope. Specifically, the reel 50 is located at the end of the partition 43 away from the first engaging part 42. The first threading hole 40a and the second threading hole 50b can overlap and communicate to allow the rope to pass through.

[0079] The ratchet disk 30 is located on the side of the first substrate 51 away from the second substrate 52. Specifically, please refer to [link to relevant documentation]. Figure 11 and Figure 12The ratchet disc 30 includes a base 31 with a first through hole 31a, a ratchet 32 ​​connected to the base 31, and a first engaging portion 39 disposed on the base 31. The ratchet 32 ​​is used to engage with the first engaging portion 42. Specifically, the ratchet disc 30 is located on the side of the partition 43 within the cylindrical body 41 away from the reel 50, so that the ratchet 32 ​​can engage with the first engaging portion 42. The pawl 32 can engage with the first engaging part 42 or disengage from the first engaging part 42. When the pawl 32 engages with the first engaging part 42, the pawl 32 can disengage from the first engaging part 42 along the first direction F. When the pawl 32 rotates along the second direction R opposite to the first direction F, the first engaging part 42 blocks the rotation of the pawl 32, thereby preventing the pawl disc 30 from rotating along the second direction R. If the pawl disc 30 needs to rotate along the second direction R, the pawl 32 needs to disengage from the first engaging part 42.

[0080] The knob 10 is located on the side of the ratchet disc 30 away from the spool 50. Specifically, please refer to [link to relevant documentation]. Figure 15 The knob 10 includes a cover plate 11, a side plate 12 connected to one side of the cover plate 11, a driving member 13 disposed on the side of the cover plate 11 facing the side plate 12, and a second engaging portion 14 disposed on the side of the cover plate 11 facing the side plate 12. Specifically, the knob 10 has a generally cylindrical structure. The cover plate 11 and the side plate 12 enclose a receiving cavity 10a with an opening, and part of the cylindrical body 41 is located in the receiving cavity 10a. In this embodiment, the driving member 13 and the second engaging portion 14 are both disposed in the receiving cavity 10a. It can be understood that the knob 10 covers the base 40, so that the reel 50 and the ratchet disc 30 are both located inside the cylindrical body 41, thereby achieving a protective function for them.

[0081] Please see Figures 3 to 6 The base 40, on the side away from the knob 10, has a limiting structure 48 for abutting against and confining the spool 40 within the cylindrical body 41. The limiting structure 48 includes a first limiting member 481 and a second limiting member 482. The first limiting member 481 and the second limiting member 482 abut against the side of the second base plate 52 of the spool 50 away from the first base plate 51 to confine the spool 50 within the cylindrical body 41, thereby preventing the spool 50 from detaching from the base 40. This ensures that the connecting structure 20, the ratchet disc 30, and the spool 50 are located between the knob 10 and the base 40 to achieve linkage between the components. The first limiting member 481 and the second limiting member 482 are disposed opposite each other on the second base plate 52. The chassis 60 is located at the end of the base 40 away from the knob 10.

[0082] In this embodiment, the second engaging portion 14 engages with the first engaging portion 39. Specifically, the second engaging portion 14 is a hook, and the first engaging portion 39 is a groove on the side of the substrate away from the knob 10. The hook engages with the groove wall, thereby connecting the ratchet disc 30 and the knob 10 in the axial direction. With this design, when the knob 10 is lifted, the ratchet disc 30 can be lifted together through the first engaging portion 39 and the second engaging portion 14. When the second engaging portion 14 engages with the first engaging portion 39, the second engaging portion 14 can move within the first engaging portion 39 when the knob 10 is rotated.

[0083] The connecting structure 20 is located inside the cylindrical body 41 and the knob 10, and passes through the first through hole 31a, and connects the ratchet disc 30 and the reel 50. The connecting structure 20 is movably connected to the reel 50.

[0084] The rope winding and unwinding device 1 provided in this application has three functions: tightening the rope, fine-tuning and releasing the rope, and fully releasing the rope. In this embodiment, the knob 10 can be rotated along a first direction F and a second direction R, and can also be lifted along the axial direction, that is, the knob 10 can move axially toward the side away from the base 40; the first direction F and the second direction R are opposite directions. Please refer to... Figure 18 In this embodiment, the observation angle is taken from the direction of the knob 10 toward the base 40, and the first direction F is the clockwise direction and the second direction R is the counterclockwise direction, which will be used as an example for explanation.

[0085] Please see Figure 19 When it is necessary to tighten the rope, the knob 10 rotates in the first direction F, which drives the drive member 13 to drive the pawl disc 30 to rotate in the first direction F. At this time, the pawl 32 disengages from the first engagement part 42, thereby pushing the pawl disc 30 to rotate in the first direction F and driving the connecting structure 20 to rotate, which in turn drives the reel 50 to rotate in the first direction F, thereby tightening the rope.

[0086] Please see Figure 21 When fine-tuning of the released rope is required, the knob 10 rotates in the second direction R, which is opposite to the first direction F. The drive member 13 drives the pawl 32 to disengage from the first engagement part 42, so that the pawl disc 30 can rotate in the second direction R and drive the connecting structure 20 to rotate. At this time, under the action of external force, the rope can drive the spool 50 to rotate in the second direction R and be released from the spool 50. When there is no external force, the spool 50 stops rotating, thereby realizing the fine-tuning of the rope release.

[0087] Please see Figure 23 and Figure 24 When it is necessary to completely release the rope, the knob 10 is lifted axially under the action of external force, thereby moving away from the base 40. The pawl disc 30 and the connecting structure 20 are moved away from the spool 50. At this time, the connecting structure 20 is disconnected from the spool 50, and the spool 50 can rotate freely within the base 40 under the action of external force, so that the spool 50 can completely release the rope under the action of external force.

[0088] Specifically, when using the rope retraction device 1, when it is applied to specific items such as shoes 2, hats 3, gloves 4, medical protective gear 5, helmets, storage devices 6, ski protective gear, bags, and clothing, the knob 10 is rotated in the first direction F to tighten the rope, thereby tightening the external item. However, when the knob 10 is rotated excessively, the rope will become taut. At this time, the rope has a certain tension, which reduces the user's comfort. It is necessary to fine-tune and release part of the rope. Rotating the knob 10 in the second direction R allows the connecting structure 20 to temporarily disengage from the spool 50. Under the tension of the rope, the spool 50 is driven to rotate in the second direction R, thereby releasing the rope. When the rope is adjusted to a suitable level, the knob is stopped, and the spool 50 stops rotating, thus stopping the release of the rope. This makes the user experience of the product more comfortable, without the need to completely release the rope and then re-tighten it. When it is necessary to completely release the rope, simply lift the knob 10 and pull the rope to release it completely, thereby loosening the external item.

[0089] In this embodiment, there are two first threading holes 40a and two second threading holes 50b, which correspond one-to-one. The two ends of the rope pass through the first threading hole 40a and then enter the second threading hole 50b, and are knotted in the spool 50, so that the rope can be fixed in the second threading hole 50b. Thus, when the knob 10 rotates in the first direction F to push the spool 50 to rotate, the rope can be tightened in the winding area 50a.

[0090] Please see Figure 16 and Figure 17 The connecting structure 20 includes a positioning element 21, an elastic element 22, and a connecting element 23. The positioning element 21 includes a connecting plate 211 and a positioning post 212 connected to the connecting plate 211, with the elastic element 22 sleeved on the positioning post 212. The connecting element 23 has a second through hole 231a, through which the positioning post 212 and the elastic element 22 pass, while the positioning element 21, the elastic element 22, and the connecting element 23 all pass through the first through hole 31a.

[0091] In this embodiment, the pawl 32 includes an elastic arm 322 connected to the base 31, a second engagement portion 321 for engaging with the first engagement portion 42, and a cylinder 323 connecting the elastic arm 322 and the second engagement portion 321. The cylinder 323 has a connecting hole 324, and the base 31 has a connecting post 38 on the side facing the knob 10. The connecting hole 324 is fitted onto the connecting post 38. The pawl disc 30 also includes an abutment portion 33, which is located on the outside of the base 31 and adjacent to the connecting post 38. When the knob 10 is rotated along the first direction F, the driving member 13 abuts against the abutting part 33 to drive the pawl disk 30 to rotate along the first direction F; when the knob 10 is rotated along the second direction R, the driving member 13 abuts against the second engaging part 321 and moves radially along the pawl disk 30, and the cylinder 323 rotates around the connecting post 38 until the second engaging part 321 disengages from the first engaging part 42.

[0092] Specifically, the second engaging portion 14 on the knob 10 uses a hook, and the corresponding first engaging portion 39 on the pawl disc 30 uses a groove. The circumference of the groove in the circumferential direction of the base 31 is greater than the circumference of the hook within the groove, allowing the hook to move along the length of the groove. This arrangement ensures that when the knob 10 rotates in the second direction R, the knob 10 and the pawl disc 30 can rotate relative to each other by a certain angle. For details, please refer to [link to relevant documentation]. Figure 20 When the knob 10 is not rotated, the second engaging part 14 abuts against one end face of the first engaging part 39, which is defined as the first end face 391. Initially, the pawl 32 of the pawl disc 30 abuts against the first engaging part 42 of the base 40. When the knob 10 rotates along the second direction R, the second engaging part 14 moves along the first engaging part 39 to the other end face of the first engaging part 39, which is defined as the second end face 392. At this time, the knob 10 and the pawl disc 30 rotate relative to each other. Continuing to rotate the knob 10 along the second direction R, the second engaging part 14 abuts against the second end face 392 of the first engaging part 39. Figure 22 As shown, at this time, the driving member 13 on the knob 10 presses the pawl 32 radially inward along the pawl disc 30, causing the pawl 32 to deform towards the center and separate from the first engaging part 42 of the base 40. This allows the knob 10 to push the connecting structure 20 and the pawl disc 30 to rotate in the second direction R. At this time, the rope can drive the spool 50 to rotate in the second direction R under the action of external force and be released from the spool 50. When the knob 10 remains stationary or rotates without external force, the pawl 32 abuts against the driving member 13, causing the second engaging part 14 to abut against the first end face 391 of the first engaging part 39. At this time, when the user touches the knob 10, the user can feel the stability between the knob 10 and the pawl disc 30, and there will be no gap or looseness.

[0093] To further prevent the pawl disc 30 from rotating in the second direction R when the knob 10 is accidentally pressed, which would cause the reel 50 to rotate in the second direction R and release the rope, the pawl disc 30 also includes a resistance arm 37 disposed on the side of the base 31 away from the knob 10. The resistance arm 37 has a certain elasticity and is used to abut against the drive member 13 to provide resistance. When the knob 10 rotates in the second direction R, if the force of the drive member 13 driving the resistance arm 37 is greater than or equal to the resistance, the pawl disc 10 will rotate in the second direction R. The above structure ensures that when the knob 10 is touched and rotated in the second direction R, the rotation of the drive member 13 is resisted by the resistance arm 37 due to the resistance arm 37 abutting against the drive member 13. When the force applied to the knob 10 is less than the resistance of the resistance arm 37 to the drive member 13, the drive member 13 and the knob 10 remain stationary, thereby avoiding any impact on the ratchet disc 30 and ensuring that the ratchet disc 30 and the reel 50 do not rotate, preventing accidental release of the rope. To prevent the knob 10 from detaching from the base 40 during the process of fully releasing the rope, causing product malfunction, the knob 10 also includes a first latching member 17, which is located inside the side wall 53; the base 40 is provided with a second latching member 45, which is located outside the cylindrical body 41; the first latching member 17 is used to engage with the second latching member 45 to prevent the knob 10 from detaching from the base 40. Specifically, the first fastener 17 is a fastener, and the second fastener 45 is located on the outer edge of the cylindrical body 41 of the base 40, so that the first fastener 17 can be fastened to the second fastener 45, thereby ensuring that the knob 10 will not detach from the base 40 when it is lifted.

[0094] The connector 23 includes a main body 231, a connecting block 232 disposed on the main body 231, and a first tooth 233 disposed at one end of the main body 231. The ratchet disc 30 also includes a connecting groove 35 extending along the axial direction of the base 31, the connecting groove 35 communicating with the first through hole 31a, the connecting block 232 being disposed in the connecting groove 35 and slidable along the connecting groove 35, thereby allowing the connector 23 to move along the axial direction of the first through hole 31a. A second tooth 56 is provided on the side of the first substrate 51 away from the second substrate 52, the second tooth 56 being used to engage with the first tooth 233, so that the connector 23 can push the spool 50 to rotate along the first direction F, and the connector 23 can rotate along the second direction R to disengage from the spool 50. Specifically, the first tooth 233 and the second tooth 56 are both annular toothed rings, formed by multiple meshing teeth connected together. When the connecting member 23 rotates along the second direction R and disengages from the spool 50, the connecting member 23 moves along the connecting groove 35, that is, it moves in the axial direction of the first through hole 31a. It can be understood that the connecting block 232 is located within the connecting groove 35, so that the connecting member 23 can only move axially along the first through hole 31a, and cannot move circumferentially along the first through hole 31a. Therefore, when the ratchet disc 30 rotates, under the action of the connecting groove 35 and the connecting block 232, the connecting member 23 will rotate with the ratchet disc 30.

[0095] To reduce production costs and ensure the strength of the ratchet disc 30, the ratchet disc 30 is integrally formed, and the cylinder 323 and the connecting post 38 are detachably connected via the connecting hole 324. Please refer to... Figure 13 and Figure 14 This shows the initial state of the ratchet disc. After the ratchet disc 30 is manufactured, the cylinder 323 is not connected to the connecting post 38. At this time, the connecting hole 324 is detached from the connecting post 38, and the elastic arm 322 has a certain elasticity and can undergo a certain deformation. When it needs to be installed on the rope take-up and undo device 1, before assembly, the cylinder 323 is installed onto the connecting post 38, that is, the connecting hole 324 is fitted onto the connecting post 38, as shown. Figure 11 and Figure 12 As shown. This design effectively reduces the number of parts in the ratchet disc 30, lowers production costs, and improves assembly efficiency.

[0096] To ensure the meshing strength between the first tooth 233 and the second tooth 56 and to facilitate their disengagement, the first tooth 233 includes a first inclined surface 233a and a first arcuate surface 233b opposite to the first inclined surface 233a; the second tooth 56 includes a second inclined surface 561 and a second arcuate surface 562 opposite to the second inclined surface 561; the first inclined surface 233a abuts against the second inclined surface 561 to allow the connecting member 23 to push the spool 50 to rotate along the first direction F; the first arcuate surface 233b abuts against the second arcuate surface 562 to allow the connecting member 23 to rotate along the second direction R to disengage from the spool 50.

[0097] Please see Figure 25 When the connector 23 rotates along the first direction F, the first inclined surface 233a abuts against the second inclined surface 561. Since both are inclined surfaces, they can achieve a tight contact, thereby preventing the first tooth 233 from disengaging from the second tooth 561 under force. This allows the connector 23 to push the reel 50 to rotate along the first direction F to tighten the rope. (See also...) Figure 26 When the connector 23 rotates along the second direction R, the first arc-shaped surface 233b abuts against the second arc-shaped surface 562. Since both are arc-shaped surfaces, the resistance is reduced when they disengage, and the axial movement distance of the connector 23 along the first through hole 31a is shortened, making it easier for them to disengage. This allows the spool 50 to release part of the rope under the tension of the rope. In other embodiments, the second arc-shaped surface 562 and the first arc-shaped surface 233b can also be inclined surfaces.

[0098] In this embodiment, the connecting plate 211 is provided with a first connecting portion 213, and the base 31 of the ratchet disk 30 is provided with a second connecting portion 36. The first connecting portion 213 and the second connecting portion 36 are connected. Specifically, one of the first connecting portion 213 and the second connecting portion 36 is a protrusion, and the other is a groove. The protrusion engages with the groove, thereby achieving the connection between the two. More specifically, the first connecting portion 213 is a protrusion, and the second connecting portion 36 is a groove. There are three of each type of connecting portion. The three first connecting portions 213 are arranged around the outside of the connecting plate 211 and are evenly distributed, thereby facilitating manufacturing and assembly and improving production efficiency. The connection between the first connecting portion 213 and the second connecting portion 36 ensures that when the knob 10 drives the ratchet disk 30 to rotate, the ratchet disk 30 drives the positioning member 21 to rotate.

[0099] The connector 23 has an abutment surface 234 on the side away from the first substrate 51. One end of the elastic member 22 abuts against the abutment surface 234, and the other end abuts against the connecting plate 211, for resetting the connector 23. (Continue reading) Figure 26 When the connector 23 rotates along the second direction R, the first tooth 233 disengages from the second tooth 56 of the spool 50. During the disengagement process, the connector 23 moves along the axial direction of the first through hole 31a, that is, the connector 23 moves away from the spool 50, thereby squeezing the elastic member 22. This causes the elastic member 22 to be compressed, thereby generating a rebound force. When the first tooth 233 completely disengages from the second tooth 56, the rebound force of the elastic member 22 pushes the connector 23 along the axis of the first through hole 31a. The knob 10 is moved in the second direction R, pushing the connector 23 towards the reel 50, thereby causing the first tooth 233 to re-engage with the second tooth 56. When the knob 10 is rotated in the second direction R, the reel 50 releases the rope under the tension of the rope. Under the rebound force of the elastic member 22, the connector 23 continuously engages and disengages with the second engagement part 321 of the reel 50, so that the rope can only be released slowly, that is, released one step at a time along the engagement teeth of the second engagement part 321, thereby achieving fine adjustment of the rope release.

[0100] In this embodiment, the positioning post 212 includes a first end 217 and a second end 218 opposite to the first end 217. The first end 217 is connected to the connecting plate 211. The positioning post 212 has an annular groove 216 near the second end 218. The reel 50 has a protrusion 57 located in the annular groove 216. The second end 218 is located on the side of the protrusion 57 away from the first end 217. The protrusion 57 can slide circumferentially along the annular groove 216. The positioning post 212 can move axially to disengage the annular groove 216 from the protrusion 57 and have the second end 218 abut against the side of the protrusion 57 facing the first end 217. Specifically, the groove wall of the annular groove 216 and the surface of the protrusion 57 are both arc-shaped, which reduces the friction during relative rotation and movement of the protrusion 57 and the annular groove 216, resulting in less wear on the product and extending its service life. When the knob 10 is lifted, the knob 10 drives the pawl disc 30, which in turn drives the positioning member 21 to be lifted together, thereby driving the elastic member 22 and the connecting member 23 to be lifted together. This causes the annular groove 216 of the positioning member 21 to disengage from the protrusion 57 of the spool 50, and the second end 218 of the positioning member 21 abuts against the side of the protrusion 57 facing the knob 10, so that the knob 10, the connecting mechanism and the pawl disc 30 disengage from the spool 50 together, allowing the rope in the spool 50 to be completely released.

[0101] Please see Figures 6 to 10 The second substrate 52 of the reel 50 has a damping member 55 on its surface away from the first substrate 51. Multiple damping members 55 are arranged circumferentially along the edge of the second substrate 52. Each damping member 55 has a third inclined surface 551, a fourth inclined surface 552, and a sliding portion 553. One end of the third inclined surface 551 and the fourth inclined surface 552 are respectively connected to the second substrate 52, and the other end is respectively connected to opposite sides of the sliding portion 553. The sliding portion 553 protrudes beyond the surface of the second substrate 52, thereby causing the third inclined surface 551 and the fourth inclined surface 552 to be inclined relative to the surface of the second substrate 52. The third inclined surface 551 and the fourth inclined surface 552 can be either a plane or an arc surface.

[0102] When the spool 50 is rotated, at least one damping element 55 abuts against the first limiting element 481 and / or the second limiting element 482 on the base 40, thereby generating resistance to prevent the spool 50 from rotating. Specifically, one of the third inclined surface 551 or the fourth inclined surface 552 of the damping element 55 abuts against the side wall of the first limiting element 481 and / or the second limiting element 482, thereby generating resistance. When the force exerted when the spool 50 is rotated is greater than the resistance, the first limiting element 481 and / or the second limiting element 482 slides along one of the third inclined surface 551 and the fourth inclined surface 552 and slides away from the other. During this process, the first limiting element 481 and / or the second limiting element 482 abuts against the sliding portion 553 on one side surface of the spool 40 and slides relative to it; at this time, the spool 50 rotates relative to the base 40, thereby tightening or releasing the rope. In this embodiment, the maximum circumference of the second base plate 52 between every two damping members 55 is greater than the circumference of the portion of the first limiting member 481 and the second limiting member 482 that abuts against the second base plate 52. This allows the first limiting member 481 or the second limiting member 482 to be positioned between the two damping members 55, enabling contact sliding or disengagement with the damping members 55, thereby controlling the length of the rope winding and unwinding. Specifically, when the first limiting member 481 and / or the second limiting member 482 abuts against and slides relative to the sliding portion 553, the reel 50 moves toward the knob 10.

[0103] With this configuration, when the knob 10 rotates in the first direction F, the connecting member 23 pushes the spool 50 to rotate in the first direction F to tighten the rope. At this time, the pushing force is greater than the resistance of the first limiting member 481 and / or the second limiting member 482 to the damping member 55, and the spool 50 rotates relative to the base 40 in the first direction F. When the knob 10 rotates in the second direction R, the connecting member 23 rotates in the second direction R and disengages from the spool 50. At this time, under the tension of the rope, the spool 50 needs to rotate in the second direction R to release the rope. When the tension of the rope is greater than the resistance of the first limiting member 481 and / or the second limiting member 482 to the damping member 55, the spool 50 rotates relative to the base 40 in the second direction R, and the rope is slowly released under the action of external tension.

[0104] The knob 10 is provided with a first positioning part 16, and the connecting plate 211 is provided with a second positioning part 214 on the side away from the positioning post 212. The first positioning part 16 is connected to the second positioning part 214. Specifically, the first positioning part 16 is a positioning protrusion, and the second positioning part 214 is a groove, which improves the assembly efficiency of the positioning part 21 during assembly and avoids damage to product parts caused by assembly errors. The surface of the connecting plate 211 on the side away from the positioning post 212 is also provided with a protrusion 215 for abutting against the cover plate 11 of the knob 10 to reduce the friction between the cover plate 11 and the connecting plate 211 and reduce wear.

[0105] Please see Figure 7 and Figure 8 The reel 50 includes a third through hole 50c penetrating the first substrate 51 and the second substrate 52, and the positioning post 212 passes through the third through hole 50c. The reel 50 includes a wall plate 54, which connects to the first substrate 51 and extends towards the second substrate 52. The wall of the third through hole 50c includes the wall plate 54, and the protrusion 57 is provided on the side of the wall plate 54 facing the third through hole 50c. In this embodiment, there are two wall plates 54, which are arranged opposite to each other; there are two protrusions 57. As the positioning post 212 moves along the axial direction of the third through hole 50c, the protrusion 57 disengages from the annular groove 216 and abuts against the second end 218 of the positioning post 212, causing the wall panel 54 to deform. That is, the two wall panels 54 deform in opposite directions, thereby allowing the protrusion 57 to disengage from the annular groove 216. Therefore, in this embodiment, the side of the wall panel 54 away from the protrusion 57 is provided with a clearance space 50e to facilitate the deformation of the wall panel 54.

[0106] In this embodiment, to allow the rope to be observed when knotting, the spool 50 further includes an opening groove 50d. The opening groove 50d covers the second substrate 52 and extends towards the first substrate 51, and communicates with the second threading hole 50b. This arrangement allows the rope to pass through the second threading hole 50b, and when knotting occurs within the opening groove 50d, the knotting process can be visually observed, and the knot can be accommodated, resulting in a more aesthetically pleasing and neat overall appearance of the product.

[0107] Continue reading Figure 3 , Figure 4 and Figure 6 The base 40 further includes a third fastener 46 and a fourth fastener 47, and the chassis 60 is provided with a fifth fastener 61 and a sixth fastener 62. The third fastener 46 and the fourth fastener 47 are respectively engaged with the fifth fastener 61 and the sixth fastener 62, thereby detachably connecting the base 40 and the chassis 60, and then the rope winding and unwinding device 1 is connected to the object via the chassis 60.

[0108] Compared to existing technologies, the ratchet disc 30 provided in this application is integrally molded, and the cylinder 323 and the connecting post 38 are detachably connected. After manufacturing, during installation and use, only the cylinder 323 needs to be installed onto the connecting post 38, effectively reducing the number of parts that realize the function of the ratchet disc 30, while ensuring the strength of the ratchet disc 30, making the ratchet disc 30 easy to manufacture and thus reducing production costs. The rope winding and unwinding device 1 provided in this application can drive the reel 50 to tighten the rope by rotating the knob 10 in the first direction F; when the knob 10 is rotated in the second direction R, the ratchet disc 30 and the connecting structure 20 disengage from the reel 50. When an external force is applied to the reel 50, the rope can be released. When no external force is applied to the rope, the reel 50 remains stationary, and when the knob 10 is rotated further in the second direction R, the knob 10, the ratchet disc 30, and the connecting structure 20 remain idle and cannot push the reel 50 in the second direction R. Rotating in the direction R ensures that the rope is not squeezed out, preventing the rope from becoming loose or knotted within the reel 50, thus ensuring the product's lifespan. Since the second engaging part 14 engages with the first engaging part 39, the knob 10 is connected to the ratchet disc 30. Therefore, when the knob 10 is lifted, the ratchet disc 30 and the connecting structure 20 are also lifted, causing the connecting structure 20 to disengage from the reel 50. This allows the rope to rotate around the reel 50 in the second direction R under external force, thereby releasing the entire rope.

[0109] Secondly, this application also provides an article comprising a first part, a second part, and a rope, wherein the first part and the second part are spaced apart, and further comprising a rope retraction device 1 as described above, the rope retraction device 1 being used to tighten or release the rope to tighten or loosen the first part and the second part. The article is one of the following: shoes 2, hat 3, gloves 4, medical protective gear 5, helmet, storage device 6, ski protective gear, bag, or clothing.

[0110] Please see Figure 27 This application also provides a shoe 2 in one embodiment. The shoe 2 includes a shoe body 2a, shoelaces 2b, and a cord retraction device 1 as described in any of the above embodiments. The shoelaces 2b serve as cords, and the cord retraction device 1 is used to retract and extend the shoelaces 2b. The cord retraction device 1 can be fixed to the shoe body 2a. In this embodiment, one side of the shoe body 2a is a first part, and the other side is a second part. The cord is the shoelaces 2b, which pass through both parts to tighten or loosen the two parts of the shoe body 2a, thereby facilitating the user to put on the shoe.

[0111] In this embodiment, the rope winding and unwinding device 1 of any of the above embodiments is used to wind and unwind the shoelace 2b. The operation is simple and the number of components of the rope winding and unwinding device 1 is small. This not only reduces assembly costs and improves assembly efficiency, but also makes the overall structure compact, which is conducive to the miniaturization and weight reduction of the rope winding and unwinding device 1. In addition, the smaller number of components can also improve the stability of the overall structure, and improve the reliability and service life of the rope winding and unwinding device 1.

[0112] Please see Figure 28 This application also provides a hat 3 in one embodiment. The hat 3 includes a hat body 3a, a hat cord 3b, and a cord retraction device 1 as described in any of the above embodiments. The hat cord 3b is used to tighten or loosen the hat body 3a. The hat cord 3b serves as a cord, and the cord retraction device 1 is used to retract or loosen the hat cord 3b. The cord retraction device 1 can be fixed to the hat body 3a. In this embodiment, the two sides of the hat body 3a are a first part and a second part, respectively, and the cord is the hat cord 3b, which connects the two parts to tighten or loosen the hat body 3a.

[0113] In this embodiment, the cord winding and unwinding device 1 of any of the above embodiments is used to wind up and unwind the hat cord 3b. The operation is simple and the number of components of the cord winding and unwinding device 1 is small. This not only reduces assembly costs and improves assembly efficiency, but also makes the overall structure compact, which is conducive to the miniaturization and weight reduction of the cord winding and unwinding device 1. In addition, the smaller number of components can also improve the stability of the overall structure, and improve the reliability and service life of the cord winding and unwinding device 1.

[0114] Please see Figure 29This application also provides a glove 4 in one embodiment. The glove 4 includes a glove body 4a, a glove cord 4b, and a cord winding / unwinding device 1 as described in any of the above embodiments. The glove cord 4b is used to tighten or loosen the glove body 4a. The glove cord 4b serves as a cord, and the cord winding / unwinding device 1 is used to wind and unwind the glove cord 4b. The cord winding / unwinding device 1 can be fixed to the glove body 4a. In this embodiment, the glove body 4a has a first part and a second part, which are located at an opening. The cord is the glove cord 4b, and the two parts are wound together to tighten or loosen the glove body 4a.

[0115] In this embodiment, the rope winding and unwinding device 1 of any of the above embodiments is used to wind up and unwind the glove rope 4b. The operation is simple and the number of components of the rope winding and unwinding device 1 is small. This not only reduces costs and improves assembly efficiency, but also makes the overall structure compact, which is conducive to the miniaturization and weight reduction of the rope winding and unwinding device 1. In addition, the smaller number of components can also improve the stability of the overall structure, and improve the reliability and service life of the rope winding and unwinding device 1.

[0116] Please see Figure 30 This application also provides a medical protective gear 5 in one embodiment. The medical protective gear 5 includes a medical protective gear body 5a, a medical protective gear rope 5b, and a rope winding and unwinding device 1 as described in any of the above embodiments. The medical protective gear rope 5b is used to tighten or release the opening of the medical protective gear body 5a. The medical protective gear rope 5b serves as the rope line, and the rope winding and unwinding device 1 is used to wind and unwind the medical protective gear rope 5b. It can be understood that the medical protective gear 5 can be an arm protector (such as a sleeve), a leg protector (such as a knee pad or wrist guard), or a waist or neck protector, and is not limited to the above embodiments. In this embodiment, the medical protective gear body 5a is divided into a first part and a second part by the opening of the medical protective gear body 5a. The rope line is the medical protective gear rope 5b, which is wrapped around the opening to tighten or release the two parts.

[0117] Please see Figure 31 This application also provides a storage device 6 in one embodiment. The storage device 6 can be a backpack, but is not limited to a backpack. It includes a storage body 6a, a storage strap 6b, and a rope winding / unwinding device 1 as described in any of the above embodiments. The storage strap 6b is used to tighten or release the storage body 6a. The storage strap 6b serves as a rope, and the rope winding / unwinding device 1 is used to wind or unwind the storage strap 6b. The rope winding / unwinding device 1 can be fixed to the storage body 6a. In this embodiment, the storage body 6a has a first part and a second part, with a gap between the first part and the second part or the second part being separable. The rope, the storage strap 6b, passes through the first part and the second part, thereby tightening or releasing the two parts.

[0118] In this embodiment, the rope winding and unwinding device 1 of any of the above embodiments is used to wind and unwind the storage tape 6b. The operation is simple and the number of components of the rope winding and unwinding device 1 is small. This not only reduces assembly costs and improves assembly efficiency, but also makes the overall structure compact, which is conducive to the miniaturization and weight reduction of the rope winding and unwinding device 1. In addition, the smaller number of components can also improve the stability of the overall structure, and improve the reliability and service life of the rope winding and unwinding device 1.

[0119] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rope winding and unwinding device, characterized in that, include: The base includes a cylindrical body, a first engaging part disposed inside the cylindrical body, a partition disposed inside the cylindrical body, and a first threading hole penetrating the cylindrical body; A reel, disposed within the cylindrical body, includes a first substrate, a second substrate, and a sidewall connecting the first substrate and the second substrate. The first substrate and the second substrate are disposed opposite to each other. The first substrate abuts against the partition plate, and the second substrate is located on the side of the first substrate away from the partition plate. The first substrate, the second substrate, and the sidewall form a winding area for storing ropes. The sidewall is provided with a second threading hole penetrating the sidewall. A ratchet disc, disposed on the side of the first substrate away from the second substrate, includes a base having a first through hole, a ratchet connected to the base, and a first engaging portion disposed on the base, wherein the ratchet is used to engage with the first engaging portion; A knob, located on the side of the ratchet disc away from the spool, includes a cover plate, a side plate connecting to one side of the cover plate, a drive member located on the side of the cover plate facing the side plate, and a second engaging portion located on the side of the cover plate facing the side plate; the cover plate and the side plate enclose a receiving cavity with an opening, and a portion of the cylindrical body is located in the receiving cavity; the second engaging portion engages with the first engaging portion; and A connecting structure is provided through the first through hole and connects the ratchet disc and the reel; the connecting structure is movably connected to the reel. When the knob rotates in a first direction, the driving member drives the pawl disc to rotate in the first direction and drives the connecting structure to rotate, thereby driving the spool to rotate in the first direction to tighten the rope. When the knob rotates in a second direction opposite to the first direction, the driving member drives the pawl to disengage from the first engagement part, so that the pawl disc can rotate in the second direction and drive the connecting structure to rotate. At this time, under the action of external force, the rope can drive the spool to rotate in the second direction and be released from the spool. When there is no external force, the spool stops rotating. When the knob is lifted axially under the action of external force and moves away from the base, the pawl disc and the connecting structure move away from the spool, so that the rope can be completely released from the spool under the action of external force. The knob also includes a first fastening member, which is located on the inner side of the side wall. The base is provided with a second fastening member, which is located on the outer side of the cylindrical body. The first fastening member is used to engage with the second fastening member to prevent the knob from disengaging from the base.

2. The rope winding and unwinding device as described in claim 1, characterized in that, The connection structure includes a connector disposed in the first through hole. The connector includes a main body, a connecting block disposed in the main body, and a first tooth disposed at one end of the main body. The ratchet disc also includes a connecting groove extending along the axial direction of the base, the connecting groove communicating with the first through hole, the connecting block being disposed in the connecting groove and slidable along the connecting groove. A second tooth is provided on the side of the first substrate away from the second substrate. The second tooth is used to engage with the first tooth, so that the connector can push the spool to rotate in the first direction, and the connector can rotate in the second direction to disengage from the spool.

3. The rope winding and unwinding device as described in claim 2, characterized in that, The first tooth includes a first inclined surface and a first arcuate surface disposed opposite to the first inclined surface; the second tooth includes a second inclined surface and a second arcuate surface disposed opposite to the second inclined surface; the first inclined surface is used to abut against the second inclined surface to enable the connector to push the spool to rotate along the first direction; the first arcuate surface is used to abut against the second arcuate surface to enable the connector to rotate along the second direction to disengage from the spool.

4. The rope winding and unwinding device as described in claim 2, characterized in that, The connecting structure further includes a positioning element and an elastic element. The positioning element includes a connecting plate and a positioning post connected to the connecting plate. The connecting plate has a first connecting portion, and the positioning post passes through the first through hole. The base of the ratchet disk has a second connecting portion, and the first connecting portion is connected to the second connecting portion. The elastic element is sleeved on the positioning post, and the connecting element has a second through hole, through which the positioning post passes. The side of the connecting element away from the first substrate has an abutting surface. One end of the elastic element abuts against the abutting surface, and the other end abuts against the connecting plate, for resetting the connecting element. The positioning post includes a first end and a second end opposite to the first end, the first end being connected to the connecting plate; the end of the positioning post near the second end is provided with an annular groove, the reel is provided with a protrusion, the protrusion is provided in the groove, the second end is located on the side of the protrusion away from the first end, the protrusion can slide circumferentially along the groove, the positioning post can move axially so that the groove disengages from the protrusion and the second end abuts against the side of the protrusion facing the first end; the knob is provided with a first positioning part, the connecting plate is provided with a second positioning part on the side away from the positioning post, the first positioning part is connected to the second positioning part; The spool includes a third through hole penetrating the first substrate and the second substrate, and the positioning post passes through the third through hole; the spool includes a wall plate, the wall plate is connected to the first substrate and extends toward the second substrate, the wall of the third through hole includes the wall plate, and the protrusion is provided on the side of the wall plate facing the third through hole; the spool also includes an opening groove, the opening groove is covered on the second substrate and extends toward the first substrate, and the opening groove communicates with the second thread hole.

5. The rope winding and unwinding device as described in claim 2, characterized in that, The base also includes a limiting structure, which is located on the side of the base away from the knob and abuts against the second substrate to confine the spool within the cylindrical body. The second substrate is provided with a damping member on the side away from the first substrate. The damping member is multiple and arranged circumferentially along the edge of the second substrate. The damping member generates resistance when it abuts against the limiting structure. When the force exerted when the spool is rotated is greater than the resistance, the spool rotates relative to the base.

6. The rope winding and unwinding device as described in claim 1, characterized in that, The ratchet disk also includes a resistance arm disposed on the side of the base away from the knob. The resistance arm has a certain elasticity and is used to abut against the driving member to provide a resistance. When the knob is rotated in the second direction, when the force of the driving member driving the resistance arm is greater than or equal to the resistance, the ratchet disk rotates in the second direction. The pawl includes an elastic arm connected to the base, a second engagement portion for engaging with the first engagement portion, and a cylinder connecting the elastic arm and the second engagement portion. The cylinder has a connecting hole, and the base has a connecting post on the side facing the knob, with the connecting hole fitted onto the connecting post. The pawl disc also includes an abutment portion located on the outside of the base and adjacent to the connecting post. When the knob rotates in the first direction, the driving member abuts against the abutment portion to drive the pawl disc to rotate in the first direction. When the knob rotates in the second direction, the driving member abuts against the second engagement portion and moves radially along the pawl disc, causing the cylinder to rotate around the connecting post until the second engagement portion disengages from the first engagement portion; and / or The rope winding and unwinding device also includes a base for mounting the rope winding and unwinding device on an external object, the base being located at the end of the base away from the knob; the base also includes a third fastener and a fourth fastener, the base is provided with a fifth fastener and a sixth fastener, the third fastener and the fourth fastener being respectively engaged with the fifth fastener and the sixth fastener.

7. An article comprising a first part, a second part, and a rope, characterized in that, It also includes a rope winding and unwinding device as described in any one of claims 1-6, the rope winding and unwinding device being used to tighten or release the rope to tighten or loosen the first portion and the second portion.

8. The article as claimed in claim 7, characterized in that, The item is one of the following: shoes, hats, gloves, medical protective gear, helmets, storage devices, ski protective gear, bags, and clothing.

9. A ratchet disc for a rope winding and unwinding device, characterized in that, The ratchet disc includes a hollow annular base and a ratchet disposed on the base. The ratchet includes an elastic arm connected to the base and a second engagement part connected to the elastic arm for engaging with the rope take-up and undo device. The second engagement part is located at the end of the elastic arm away from the base and is detachably connected to the base.

10. The ratchet disc as described in claim 9, characterized in that, The pawl also includes a cylinder disposed between the elastic arm and the second engagement part. A connecting post is provided on the base, and the cylinder is provided with a connecting hole. The pawl disc is integrally formed, and the cylinder and the connecting post are detachably connected through the connecting hole.

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